Integrated Pump House for Domestic Water Supply - Huazhen Water

Integrated pump room for domestic water supplyDescription

Integrated pump room for domestic water supplyIt detects the pressure of the tank through a pressure sensor, and the pressure electrical signal is recognized and amplified by an automatic control circuit to control the action of the contactor, so that the water pump can automatically run and stop according to the pressure changes inside the tank, achieving the purpose of automatic water supply.Variable frequency booster pump for water tankThe working process is to start the water pump, inject water into the tank through the check valve, thereby increasing the pressure inside the tank. When the pressure reaches the set pressure *, the pressure automatic controller automatically shuts down the water pump, causing it to stop running. Due to the pressure inside the water supply tank being higher than the pressure in the water supply network, it can automatically reduce the pressure and supply water. When the pressure drops below the set pressure *, the water pump is automatically controlled to start and inject water into the water supply tank. This process repeats to ensure that the equipment continues to supply water and operates fully automatically.

Integrated pump room for domestic water supplyPurpose:

1. High rise buildings, residential communities, enterprises and institutions, and other living and fire water supply systems, HVAC, air conditioning circulation, and quality based water supply systems;

2. Production water for various industrial and mining enterprises (such as circulating cooling water, industrial boiler water supply systems, etc. that require constant pressure production water);

3. Constant pressure oil transportation systems such as oil field pipelines, oil depots, oil pump stations, and oil ports;

4. Various types of waterworks and water supply booster pump stations;

5. Various types of reclaimed water, sewage, and wastewater treatment plants;

6. Sprinkler irrigation stations for large squares, parks, green spaces, and farms

Integrated pump room for domestic water supplyMade of stainless steel material, the box body is stamped into a hemispherical shape and then argon arc welded to form a beautiful appearance and stable and reliable performance. Other related accessory materials are also made of stainless steel.

Product Features

High energy efficiency: When the pressure in the public pipeline network is sufficient, pressurization can be achieved (20-30 meters) through a non negative pressure regulator; Fully utilizing the original pressure of tap water, the water pump can meet the needs of users at unfavorable points of domestic water supply with only half or two-thirds of the rated power during the water supply process; Compared with previous water supply equipment, its energy-saving effect can reach (30% -95%).

Good water quality: The Turmaline negative ion device, a water treatment technology, is used to change the physical structure of the water; Its special function is to change water from large molecules to small molecules, greatly reducing the alkalinity of water and increasing the dissolved oxygen content; Negative ions can penetrate into cells and cell membranes in a large amount, increase cell activity, eliminate oxygen free radicals in the skin, and emulsify and decompose * deposited on blood vessel walls until it is excreted from the body, accelerating human metabolism; Especially beneficial for the physical health of middle-aged and elderly people.

Low noise: The water pump adopts high-performance and low-noise Tomalin ecological water purification pump, which reduces the noise by 20% to 30% compared to previous water pumps.

Appearance beauty: Made of edible grade SUS304 stainless steel material, the surface is shiny and rusted; If placed outdoors with a little bit of Tengben plant rhetoric, it can add a beautiful scenery to the community.

Performance: The interior of the water tank is fastened with mesh type tension bars, which can withstand pressure; The water pump adopts a water-cooled motor, which has fast heat dissipation and will not burn out the equipment due to motor overheating; And the control system is equipped with major functions such as fault alarm system, automatic fault switching system, overheating and overload protection system, leakage protection system, scheduled automatic maintenance alarm system, and waterless protection system.

System Principles

The water enters the water tank through the public pipeline network, and a portion directly enters the water tank. When the water level reaches *, the water inlet float valve of the water tank closes; The water level drops and the inlet float valve opens. The other part enters the non negative pressure regulator. When the pressure in the public pipeline network is sufficient and the water supply unit is running, the non negative pressure regulator starts to operate, using the existing pressure in the pipeline network to directly supply water to users. When the pressure in the public pipeline network is insufficient, the negative pressure monitoring meter detects the formation of negative pressure in the pipeline network and immediately feeds back the signal to the negative pressure control center. The negative pressure control center receives the signal and immediately sends a command to the non negative pressure regulator. After receiving the command, the non negative pressure regulator starts to automatically adjust the pressure to prevent public pressure from entering. At the same time, the water supply channel of the water tank is opened, and water is directly supplied from the water tank to the user's pipeline network.

To simplify the equipment and save costs, the model product designed for your company is our company's non negative pressure energy-saving booster water tank dual outlet equipment. The low and high zones share a set of water tanks. The pump head for the low zone is considered based on the required water supply pressure for the low zone, and the pump flow rate is considered based on the combined total flow rate of the two zones. The pump head for the high zone is considered based on the design water supply pressure minus the water pressure, and the pump flow rate is considered based on the flow rate for the high zone. This set of dual outlet partition equipment actually only shares the low zone water pump unit, water tank, and frequency conversion cabinet, while the high zone is equipped with a series booster pump, with the low zone outlet as the water source.

System Composition

The intelligent box type energy-saving water supply system is an intelligent energy-saving booster water supply equipment that integrates food grade stainless steel water tanks, stainless steel pipelines, stainless steel valves, water pumps, energy-saving systems, intelligent variable frequency control cabinets, and complete sets of accessories.

This series of equipment has a perfect structure, advanced technology, reliable performance, smooth operation, and simple operation. Users only need to connect one inlet and one outlet to complete intelligent automatic water supply.

(The complete set of accessories includes liquid level sensors, liquid level control float valves, pressure sensors, stabilizing tanks, shock absorbers, ladders, manholes, and flanges.)

Principle Description

Conventional building water supply system:Users store water in the municipal pipeline network through a water tank, and then use a water pump to pressurize the water supply pipeline to complete the building's water supply. This water supply method not only wastes the original municipal pipeline network water, but also

press(0.15～0.45MPa)It also causes great inconvenience to the cleaning, maintenance, and upkeep of the water tank(During the cleaning and maintenance process of the water tank, the water pump is usually unable to complete the water supply, and the user must stop the water supply).

Intelligent box type energy-saving water supply system:It can ensure the full utilization of the municipal pipeline network without generating negative pressure in the municipal pipeline network0.15～0.45MPaThe water pressure is added to increase the pressure of the water supply, and the amount needed is replenished to save energy while ensuring that the normal use of water by users is not affected during the cleaning and maintenance of the water tank.Before the operation of the intelligent box type energy-saving water supply system, the energy-saving system installed on the inlet pipeline first detects the municipal water supply pressure. When the municipal water supply pressure reaches the building's water supply requirements, the energy-saving system opens and directly provides the municipal pressure to the water supply pipeline to complete the building's water supply. The booster pump is in a dormant state; When the municipal water supply pressure is insufficient to meet the building's water supply requirements, the energy-saving system will transmit the undervoltage signal of the water supply pipeline into the frequency conversion cabinet, and the frequency conversion control system will control the pump group to perform pressure boosting operation, making up for the shortfall to complete the pressure boosting energy-saving water supply.

The operation mode of the intelligent box type energy-saving pump set is:Firstly, start one of the pumps to operate at an appropriate frequency and frequency according to the required water volume and insufficient pressure output by the system, and supply water through stacked pressure. If one pump reaches full speed but still does not meet the demand, start the second pump to make up for the difference, supply water through variable frequency constant pressure stacked pressure energy-saving, and increase the pumps in sequence. When the user's water consumption gradually decreases until it stops using water, the system gradually slows down the pump according to the feedback signal from the user's pipeline network until it enters a sleep state. The water pump stops running. When there is a pressure drop trend in the user's pipeline network due to the user's need to use water again, the system automatically wakes up the pump group and enters an automatic running state. Each pump automatically starts and runs in rotation according to the length of operation time, in order to maximize the service life of each pump.

feature

● energy saving

When the municipal water supply pressure reaches the building's water supply requirements, the municipal water supply is directly completed, and the intelligent system puts the booster pump in a dormant state. When the pressure of the municipal pipeline network is insufficient to meet the water demand, the intelligent system increases the water pressure based on the pressure of the municipal pipeline network by adjusting the speed and number of variable frequency booster pumps, and compensates for the shortfall. Fully utilize the residual pressure of the pipeline network to achieve energy-saving effects.

● Power outage and continuous water supply

When the power supply line is cut off, the energy-saving system completes the municipal pressure water supply, thereby achieving uninterrupted water supply during power outages.

● Timed update function

The system is equipped with a timed shut-off of the water tank inlet, automatically completing the replacement of stored water, and maintaining the retention time of the water tank to ensure water quality, environmental protection, and hygiene.

● Highly automated safety

The system has fully automatic control performance and manual control capability/Automatic switching, timed update of water storage, leakage protection, overheating protection, overload protection, water shortage protection and other functions.

● Cycle start, mutual backup

In order to extend the service life of each pump to a maximum extent, the system is designed with each pump as a backup for each other, starting and running in a cyclic manner according to the running time of each pump.

● save investment

The system integrates the pump unit and its energy-saving control part with the water tank, which can eliminate the need for a building pump room, save floor space, shorten the construction period, and achieve the effect of saving investment and optimizing the combination.

● low noise

The water pump and its energy-saving control system are hidden in the water tank, isolating noise from the outside world and meeting the standards of a quiet environment.

● Storage and self-sufficiency function

When the municipal water supply is insufficient or there is a short-term water outage, the system automatically replenishes the stored water in the water tank to the user's pipeline network to meet their water needs, thereby ensuring that users are not affected by pressure fluctuations in the pipeline network or short-term municipal water outages, and achieving a certain degree of storage self-sufficiency.

Comparison between Intelligent Box Pump Station Water Supply and Traditional Variable Frequency Water Supply

Integrated pump room for domestic water supplyprinciple

1. The near water inlet of the water pump is connected to the pressure regulator compensator, and the monitoring and control microcomputer constantly monitors the pressure inside the pressure regulator compensator. By controlling the negative pressure relief device, the pressure of the pressure regulator compensator and the near water of the tap water is stabilized, so as not to generate negative pressure, thereby ensuring the normal water supply of the tap water network.

2. When the pressure of tap water is lower than the user's required pressure, the monitoring and control microcomputer automatically controls the variable frequency soft start operation of the booster pump until the actual pressure of the water pump outlet pipe is equal to the set user pressure. Only then does the monitoring and control microcomputer control the booster pump to operate at a constant speed to maintain the actual pressure at the same level as the set user pressure. The higher the pressure of tap water, the lower the speed of the booster pump. The lower the pressure of tap water, the higher the speed of the booster pump. When the pressure of tap water is equal to the set user pressure, the booster pump stops working. On the basis of traditional variable frequency water supply for energy conservation, it also fully utilizes the existing pressure of the tap water pipeline network, and supplements it according to the difference, further saving energy.

3. If the tap water stops, the equipment will automatically shut down, the incoming water will automatically turn on, and if there is a power outage, the tap water will automatically resume normal pressure supply. Non negative pressure variable frequency high-riseIntelligent Box Pump StationControl system monitoring and control microcomputer - it is our company-Hunan Huazhen Water Affairs Co., LtdJBW industrial microcomputer designed and produced specifically for non negative pressure variable frequency high-rise water supply, equipped with Japanese LCD color LCD industrial display and waterproof film touch keyboard. Avoiding the defects of unstable operation and short service life caused by using ordinary microcomputers in other products.
Integrated pump room for domestic water supplyadvantage
1.Save total investment: No need to build a water tank or reservoir, connect it directly to the tap water pipeline for pressurized water supply, fully utilize the existing pressure, adjust the pump parameters (such as the original pump required a head of 60 meters, now only 30 meters is needed), and reduce operating costs.
2. Pure water quality: Pure tap water is directly supplied to users after being pressurized by equipment. The diaphragm vacuum pressure tank adopts natural non-toxic, sealed connection, isolated from air *, and the water source has no pollution, with good water purity. Adopting microcomputer frequency conversion soft start constant pressure control, the water supply pressure is stable and the water pressure is stable.
3. Water saving: The fully enclosed structure eliminates the waste of water resources such as running, emitting, leaking, dripping, and seeping, and regular cleaning and disinfection are directly connected to the tap water pipeline.
4. Energy saving: It can fully utilize the existing pressure of the tap water pipeline, and make up for the difference as much as possible. When the tap water pressure meets the requirements, the equipment stops working, and the energy-saving effect is extremely significant. If a residential area is 6 floors high and tap water can be supplied to the 6th floor during low peak periods and to the 4th floor during peak periods, then Hunan non negative pressure water supply equipment is used to pressurize the 5th and 6th floors during peak periods. During low peak periods, Hunan Yongzhou non negative pressure water supply equipment will stop working. Power outages can restore normal pressure water supply to tap water. This water supply method has low energy consumption, low operating costs, and saves daily electricity expenses.
5. Save land occupation and installation time: No need to build a water tank or install a water tank. The complete set of equipment leaves the factory and after arriving at the site, the user's tap water inlet and outlet pipes can be connected to the non negative pressure variable frequency water supply equipment. The construction is simple, the construction period is short, and the land occupation is small.
6. Save manpower and material resources: By using non negative pressure variable frequency water supply equipment, the water quality is not polluted, and there is no need to install disinfection equipment, further saving investment. It is very economical to use, as there is no pool (box), saving the cost of regular disinfection and cleaning.
7. * Control System: UseThe frequency converter can be equipped with a human-machine interface control according to customer requirements, accurately, clearly, and in real-time displaying operating parameters and status such as water outlet pressure, water inlet pressure, set pressure, pump current, working frequency, etc. It can also display dynamic and real-time images. Fully automated and intelligent control and management, friendly human-machine dialogue, simple operation, and reliable performance.
At sunset, the west wind stays, but it still blows down trees. It often blows northwest wind, and the weather has been sunny recently. The east wind will start in the middle of the night, and tomorrow it will blow after the rain. The rain will not stop in the future. The south wind blows to the end, and the north wind returns the favor. The south wind fears sunset, and the north wind fears dawn.

Product Name: Intelligent Box Pump Station

Product Type: Intelligent Box Pump Station

Product Model: HZXB-20-60-3Integrated pump room for domestic water supply

- Intelligent Box Pump Station-Scope of use: 1. Water supply for high-rise buildings and city level buildings. 2. Heating and pressurization for high-rise buildings- Intelligent Box Pump Station-3. OriginalIntelligent Box Pump StationRenovation 4: Industrial Water Supply- Intelligent Box Pump Station -5. Fire water supply 6. Directly take water from the well for water supply (no need for secondary water lifting). The water supply system uses imported stainless steel booster pumps, stainless steel valves, compensation tanks, and pipelines made of all stainless steel materials, which are pollution-free and corrosion-resistant. Changsha Huazhen EquipmentIntelligent Box Pump StationAs a major professional manufacturer of water supply equipment in the five provinces of central and southern China,Intelligent Box Pump Station Intelligent Box Pump StationFactory,Intelligent Box Pump StationFactory,Intelligent Box Pump StationFactory,Intelligent Box Pump StationControl cabinets, water supply equipment, centrifugal pumps and other water supply equipment factory products

The traditional water supply method cannot do without reservoirs, and the water in reservoirs is usually supplied by the tap water network. In this way, pressurized water enters the reservoir and becomes zero, resulting in a large amount of energy waste. ZWL intelligent non negative pressure steady flow water supply equipment is a complete set of water supply equipment developed by our professional technical personnel based on pneumatic water supply equipment, which can be directly connected to the tap water pipeline network and does not have any negative effect on the tap water pipeline network. It can replace reservoirs and fully utilize the pressure of the tap water network to directly or indirectly supply water, avoiding secondary energy waste and pollution, significantly saving infrastructure investment and shortening construction period. The ZWL intelligent non negative pressure steady flow water supply equipment consists of an intelligent variable frequency control cabinet, a steady flow tank, a water pump unit, instruments, valves and pipelines, a base, etc. It is suitable for all water supply systems that require increased water pressure and constant flow. Suitable for all water supply systems that require increased water pressure and constant flow rate. Environmental conditions 1 Environmental temperature: 5-40 ℃ 2 Relative humidity of the air: ≤ 85% (at 20 ± 5 ℃) 3 Medium temperature: 4-70 ℃ 4 Supply voltage: 380V (+5%, -10%)

Characteristics and analysis of integrated domestic water supply pump room:

The water consumption of users is generally dynamic, so situations of insufficient or excessive water supply may occur from time to time. The imbalance between water use and supply is mainly reflected in the pressure of water supply, where more water is used and less water is supplied, resulting in lower pressure; If there is less water and more water, the pressure is greater. Maintaining a constant water supply pressure can balance the supply and use of water, with more water supplied when using more and less water supplied when using less, thereby improving the quality of water supply. The water pipeline pressurization equipment is very important for users. In the production and daily water supply, if the tap water supply is insufficient or temporarily cut off due to reasons, it may affect the quality of life, and in severe cases, it may affect survival safety. In the event of a fire, if the water supply pressure is insufficient or there is no water supply, it cannot be quickly extinguished, which may cause significant economic losses and casualties. Therefore, adopting a constant pressure water supply system in the water use area can generate significant economic and social benefits.
With the development of power technology and the continuous improvement of fully automatic tower free water supply technology, the intelligent water supply control system with no negative pressure variable frequency water supply equipment as the core has replaced the previous high-level water tank and pressure tank water supply equipment. The starting is smooth and the starting current can be limited to the rated current, thus avoiding the impact on the power grid during starting; Due to the decrease in the average speed of the pump, the service life of the pump and valves can be extended; It can eliminate the water hammer effect during start-up and shutdown. Its stable and safe operating performance, simple and convenient operation mode, and comprehensive and thoughtful functions will enable water supply to achieve water-saving, energy-saving, and labor-saving, ultimately achieving the goal of efficient operation.

Description of integrated domestic water supply pump room:

1. Basic Description of Box Pump Station Control Technology:
The box pump station system is set with a constant pressure value. If the pipeline pressure is higher than the set pressure value, the pressure transmitter will feedback the pipeline pressure to the variable frequency control cabinet. The tap water can be directly supplied to the user's pipeline network through the direct supply pipeline. When the pressure of the municipal pipeline network changes or the water consumption of the user pipeline network changes, causing the pipeline pressure to be lower than the set pressure, the pressure transmitter feeds back the pipeline pressure to the PlD controller in the frequency conversion control cabinet. The PlD controller adjusts the output frequency of the frequency converter, starts the water pump unit, and adjusts the pump speed to maintain constant pressure water supply; If the water supply requirements cannot be met, the control cabinet will control the start and stop of multiple power frequency pumps and the speed of variable frequency pumps to achieve the requirement of constant pressure variable water supply.
2. Basic Description of Negative Pressure Elimination Technology for Box Pump Station
The box pump station adopts microcomputer frequency conversion technology and effective negative pressure treatment technology to achieve stacked water supply Specifically, as follows:
The non negative pressure variable frequency water supply equipment achieves direct serial connection with the tap water pipeline network through a vacuum compensation system and a fully enclosed structure, and overcomes the adverse effects on the pipeline network. The non negative pressure variable frequency water supply equipment collects the vacuum degree and water level signals inside the steady flow compensator through the pipeline pressure gauge, vacuum suppressor, and detection device in the steady flow compensator, and provides real-time feedback. The special devices in the vacuum suppressor and steady flow compensator are controlled by a microcomputer to suppress the generation of negative pressure and ensure that the equipment does not affect the urban pipeline network.
When the municipal pipeline network is shut down, the water pump unit can still work until the pressure in the steady flow compensator drops to the lower limit pressure set by the electrical contact, and then automatically stops. It will start automatically when water comes in. When there is a power outage, the water pump unit stops working, and tap water can enter the user's pipeline network through a direct pipeline. When a call is received, the unit automatically starts up and resumes normal water supply.

Eight advantages of integrated domestic water supply pump room:

(1) Efficient and energy-saving: Fully utilizing the pressure and heat energy inherent in municipal water sources, making up for the difference as much as possible, effectively and maximally exerting the energy-saving effect of variable frequency speed regulation.
(2) Clean and hygienic: It constitutes a continuous and enclosed pressurized water supply method, which maintains the water quality and hygiene standards of municipal water sources, fundamentally avoiding the water quality standard reduction and various water source pollution problems caused by the pressurized system.
(3) Eliminating waste: Not only has the high-level water tank been eliminated, but also the ground (underground) water tank has been completely eliminated, preventing water overflow and water source waste caused by regular cleaning.
(4) Low operating noise: When the series of automated water supply equipment products adopt a full frequency conversion adjustment scheme, they are mostly in low-noise operating conditions, especially at night.
(5) A fully enclosed water source tank with both buffering and dynamic compensation functions has been designed, which is more practical and simplifies the control system compared to the so-called 'no *' in the current market.

(6) The control system of this series of fully automatic tower free water supply products fully summarizes the design and manufacturing experience of our company and domestic and foreign variable frequency water supply equipment. It adopts standardized and universal control system technology solutions, and can be replaced with any manufacturer's frequency converter, regulator, PLC and other components. Debugging and maintenance are particularly convenient, laying a good foundation for the lifelong after-sales service of the product, and will not cause after-sales service problems due to technological progress.
(7) The control system of this series of fully automatic water supply equipment products has high intelligence, and the design fully considers the coordination and cooperation of machines, electricity, and instruments. It has detection and monitoring functions that can be achieved quickly but not quickly, as well as simple and convenient human-machine interaction functions. It has comprehensive fault protection functions and countermeasures. When the frequency converter fails to protect, it automatically operates in a degraded state (becoming a power frequency automatic water supply equipment). When the automatic system fails, it can also be manually operated as an emergency backup to win maintenance time.
(8) Various communication interfaces and protocols can be selected according to requirements, so as to connect various human-machine interfaces and monitoring computers, and can be connected to various control networks and communication networks, suitable for special and complex operation control and network monitoring requirements. We can develop supporting monitoring software for users.

Innovation points of integrated domestic water supply pump room technology:

1. Integrate the water tank and water pump used in the water supply system of the tap water pipeline, and place the water pump, control cabinet, non negative pressure device and other equipment in the water tank. Separate the equipment from the water in the water tank through the water tank partition. Due to the placement of the water pump inside the water tank (using a low-noise shielded pump), the noise of the equipment is greatly reduced.
2. The inlet of the variable frequency pump is connected to the non negative pressure device and the non negative pressure water device. When the pressure is sufficient, the non negative pressure device automatically opens, and the water is directly supplied by the municipal pipeline network, which is then pressurized by a booster pump to supply water to the user. When the non negative city device detects a decrease in pressure in the municipal pipeline network, the non negative pressure inlet device immediately starts and the non negative pressure device closes. At this time, the user pipeline is directly pressurized by pumping water from the water tank through the booster pump to ensure sufficient pressure in the user pipeline.
3. Intelligent solenoid valves are used at the inlet of the water tank to control the inlet pressure and water level. When the pressure in the pipeline decreases and the booster pump draws water from the water tank, intelligent control can be used. When the water level in the tank is below a certain level, the solenoid valve can be opened to release water from the pipeline, ensuring a certain pressure at the water intake. This measure can avoid peak water consumption and play a peak shaving role. It also avoids zero pressure discharge from ordinary water tanks, which is a good protection for pipeline pressure.
4. The water tank, water pump, pipelines, valves and other water related materials in this complete set of equipment are all made of food grade stainless steel materials, which will not cause secondary pollution to tap water. At the same time, the equipment is equipped with an intelligent circulation system, which automatically draws water from the water tank every 6 hours to ensure fresh water quality, hygiene and environmental protection.

Integrated pump room for domestic water supplyTechnical prerequisites:

Looking at the performance curve of the pump, we all know that there is a low efficiency zone in the operation of the pump. For example, when the rated flow rate is 20 cubic meters and 60 meters, the efficiency of Huazhen Water's stainless steel multi-stage pump is high at this node, reaching 72%. This means that when we need 6 kilograms of outlet pressure and a water flow rate of 20 cubic meters, the pump can exert its maximum efficiency. However, our water flow rate is often constantly changing. What should we do when the water flow rate is 21 cubic meters? Some manufacturers have two main pumps and a total water supply flow of 40 cubic meters, but this phenomenon occurs when the water consumption is 21 cubic meters. If one pump is not enough, two pumps will be put into operation. But when two pumps are running again, even if one pump is variable frequency, the pump in the variable frequency only provides one cubic meter of water, which is difficult to obtain in design. This will make the program judge that there are two more pumps, and then stop one pump. However, soon one pump cannot meet the water supply capacity, and two more pumps have to be started. Therefore, the equipment will repeatedly start and stop the pumps at this node during operation. This greatly undermines the stability of the constant pressure water supply. Moreover, the operating efficiency of a 20 square meter water pump is very low at 1 square meter, only 10%, including only 40% at 5 square meters. If the pump operates intermittently in this area, its efficiency is very low.

Integrated pump room for domestic water supplySuitable scope
1. High rise buildings, residential communities, enterprises and institutions, and other living, fire water supply systems, HVAC, air conditioning circulation and quality based water supply systems;
2. Production water for various industrial and mining enterprises (such as circulating cooling water, industrial boiler water supply systems, etc. that require constant pressure production water);
3. Constant pressure oil transportation systems such as oil field pipelines, oil depots, oil pump stations, and oil ports.
4. Various types of water plants and water supply booster pump stations.
5. Various types of reclaimed water, sewage, and wastewater treatment plants.
6. Sprinkler irrigation stations for large squares, parks, green spaces, and farms;
8. Energy saving and consumption reducing renovation of the user's original pressurization system.