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Hunan Huazhen Water Affairs Co., Ltd
HLXB Box Pump Station - Huazhen Water*
NegotiableUpdate on 01/22
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Overview
The HLXB box type pump station has full protection functions, safe and reliable operation, and easy operation. The main unit of the water supply equipment adopts an imported frequency converter, which has protection functions such as undervoltage, overvoltage, overcurrent, overload, short circuit, overheating, and stall prevention. It has been used for more than 100000 hours.
Product Details
HLXB Box Pump StationOverview
HuazhenHLXB Box Pump StationA new type of frequency conversion equipment. Divided into box type non negative pressure variable frequency equipment and tank type variable frequency non negative pressure equipment. The system is connected in series to the municipal water supply network where the pressure is insufficient. By detecting the outlet pressure through sensors and comparing it with the set value, the required increase in pressure value is calculated to determine the number of water pumps to be put into operation and the motor speed. This device maximizes the utilization of the original pressure of the municipal tap water pipeline network, without generating negative pressure on the municipal pipeline network. It replaces old-fashioned water tanks with stainless steel water tanks or non water tanks, reducing secondary pollution of water use. It is a new generation of energy-saving products in the field of water supply.
Indoor box type integrated pump station, also known as "intelligent box type pump station" and "box type non negative pressure water supply equipment", is a new product upgraded and developed by Nosexin on the basis of the original variable frequency constant pressure water supply equipment and non negative pressure water supply equipment. It consists of stainless steel water tank, water pump, intelligent variable frequency control cabinet, non negative pressure device, boosting device, water diversion device, and stabilizing tank. It is a new type of electromechanical integrated water supply equipment combined with computer technology, variable frequency technology, and motor pump to meet the requirements of urban water supply network. When pumping, no negative pressure is generated, and indoor box type integrated pump station has certain regulation and storage capacity. During peak periods, water supply is continuously interrupted
Product Overview
Indoor box type integrated pump station, also known as "intelligent box type pump station" and "box type non negative pressure water supply equipment", is a new product upgraded and developed by Nosexin on the basis of the original variable frequency constant pressure water supply equipment and non negative pressure water supply equipment. It consists of stainless steel water tank, water pump, intelligent variable frequency control cabinet, non negative pressure device, boosting device, water diversion device and stabilizing tank. It is a new type of electromechanical integrated water supply equipment combined with computer technology, variable frequency technology and motor pump to meet the requirements of urban water supply network. When pumping, no negative pressure is generated, and the indoor box type integrated pump station has a certain regulation and storage capacity. During peak periods, water supply is continuously interrupted.
*Product
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Self-cleaning sterilizer
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Stainless steel stamping plate
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Stainless steel water tank is a new generation of water tank product after fiberglass water tank. Its product is made of SUS304 stainless steel plate precision molded, with beautiful appearance, economic practicality, and long-lasting durability. Compared with other water tanks, stainless steel water tanks have many advantages such as light weight, high temperature resistance, corrosion resistance, high temperature resistance, clean water quality, anti-seepage, earthquake resistance, no moss growth, no secondary pollution of water quality, easy installation, no need for maintenance, and easy cleaning.
Product Parameters
Welding seam of water supply tank, material for indoor box type integrated pump station: The following is prepared based on the technical parameters of stamped stainless steel water tank. The accessory materials of the water tank are made of ordinary carbon steel plate and profiled steel, welded with LB304NI8.0 welding rod, and their quality should comply with the current standards "Carbon Structural Steel" and "Carbon Steel Welding Rod" respectively.
The splicing of LB304 stainless steel plates on the top, walls, and bottom of the box adopts butt welding (I-type welding for the top plate, V-type welding for the bottom plate and side walls), and other welding is fillet welding. There is no cross crossing phenomenon between the welds, and they must not overlap with the ribs. The welding machine is LB-2-300 stainless steel water tank welding machine, which has the functions of electric welding and argon welding.
Product Features
High energy efficiency: When the public pipeline pressure is sufficient, it is achieved through a non negative pressure regulator（20-30M) Boosting; 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%）.
Low noise: The water pump adopts a lightweight stainless steel vertical multi-stage pump, which is quieter than previous water pumps,Its noise has decreased20%~30%.
Beautiful appearance: Made of edible grade stainless steelSUS304Material, shiny and rusty appearance;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 an aluminum shell 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, with a portion directly entering the tank until the water level reaches*The water tank inlet float valve is closed; The water level drops and the inlet float valve opens.
System architecture diagram (see attached figure)
Attachment: Water tank accessories include (inlet ball valve, inlet pipe, outlet pipe, overflow pipe, drain pipe, vent pipe, flange, channel steel bottom seat, manhole, ladder, etc.)
HLXB Box Pump StationScope of application
Newly built residential communities or buildings for domestic water use.
The water supply method with existing pools and tanks is for the renovation of water pollution.
Production and domestic water supply for industrial and mining enterprises.
Long distance water supply intermediate booster stations in urban water supply systems, regional water supply network booster stations, and high-level centralized water supply booster stations.
HLXB Box Pump StationTechnical features:
1. The equipment operates in a fully sealed manner and does not come into contact with air. The overcurrent parts that come into contact with water are made of food grade stainless steel to prevent secondary pollution and ensure good water quality for drinking;
2. Water conservancy model, processing and manufacturing technology, and external surface treatment to improve system efficiency and service life;
3. The system architecture is designed to be compact, with quick and convenient installation and maintenance, while saving equipment space and a significant amount of civil engineering investment;
4. Fully utilize the pressure of the pipeline network, add pressure, save electricity, operate in a closed pipeline, and avoid water resource loss such as running, emitting, dripping, seeping, and leaking;
5. By using independently developed control modules for intelligent control, the stability of the system can be improved. At the same time, a remote monitoring module can be optionally selected to easily monitor the system's operation through new transmission time.
HLXB Box Pump StationTechnical 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.
HLXB Box Pump StationSuitable 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.
HLXB Box Pump StationScope of application
1. Applicable geographical scope: Suitable for pressurized water supply in areas with sufficient pressure in urban pipeline networks
2. Applicable engineering types: production and domestic water for industrial and mining enterprises, large intermediate booster pump stations for water supply in water plants
3. Applicable engineering location: Secondary pressurization system for water supply
4. Other applicable scope: Domestic water supply for newly constructed, renovated, expanded residential buildings, office buildings, hotels, restaurants and other public buildings
5. Types of using units: design unit, construction unit, supervision unit
HLXB Box Pump Stationdetailed
Principle of Intelligent Box Pump Station: Analyze the water in the pipeline network, which enters the steady flow compensator through the pipeline, filter, and backflow preventer, and then passes through the steady flow compensator to be pressurized by the water pump to the user. The water supply process is relatively simple, and its core technology is how to eliminate negative pressure during the water supply process. The core component lies in the structure and principle of the steady flow compensator. The following figure is a structural sectional view of the steady flow compensator. Through this figure, we can analyze how the equipment eliminates negative pressure.
There are several situations here:
When the supply of tap water exceeds the user's water consumption, it can be supplied normally without generating negative pressure.
Secondly, when the water supply of tap water cannot meet the peak demand of users, the steady flow compensator can play a role in replenishing water in a short period of time. Due to the decrease in water volume of the steady flow compensator, the water level of the compensator will drop, forming a vacuum, and negative pressure will occur inside the compensator. If no measures are taken at this time, it will inevitably affect the water supply pressure of the tap water network, causing pressure disorder in the surrounding tap water network. In response to this situation, other manufacturers use a component called a "vacuum suppressor" to eliminate the vacuum. (The principle is not described in detail here) Changsha Hengxin adopts the principle of replenishing air in the tank to eliminate the vacuum, which divides the steady flow compensator into two chambers A and B. The gas in chamber A is reserved after welding during manufacturing, and the gas in chamber A is reserved
HLXB Box Pump StationThe principle of gas plays a role in eliminating negative pressure. When the supply of tap water cannot meet the user's water demand, the water level in the compensator (i.e. chamber B) drops and a vacuum occurs. At this time, a siphon phenomenon is formed due to the negative pressure of the vacuum. The gas in chamber A will be introduced into chamber B due to the pressure difference, thereby achieving the effect of breaking the vacuum and eliminating negative pressure. When the water supply is sufficient, as the liquid level in chamber B continues to rise, the floating ball at the upper end of the chamber will be lifted, and the air in chamber B will be compressed back into chamber A for storage and later use.
Is there a possibility of toxic gases stored in chamber A. Because the gas inside chamber A is stored after one-time welding, the majority of the gas composition inside the chamber is the smoke generated by welding.
Secondly, the "toxic gas" pre stored in chamber A is slowly absorbed and dissolved by water after coming into contact with the water in chamber B. Over time, the gas in chamber A will be dissolved and absorbed by water, creating a new vacuum and resulting in a lack of gas to replenish. Once chamber B experiences a vacuum; If there is no air to replenish in chamber A, it is impossible to eliminate vacuum and negative pressure phenomena.
Thirdly, when the liquid level of the compensator drops to 1/3 of the B chamber, the equipment will experience a protective shutdown. How can we ensure the water supply for high-level users at this time? In addition, the instability of the water level can cause frequent opening of the water pump and disorder of user water pressure. How can we solve this problem?
HLXB Box Pump StationWorking conditions:
Installation conditions: A concrete platform with sufficient load-bearing capacity or a flat ground that can ensure normal working requirements
Power supply: TN-S system, 3-phase 5-wire, 380V (+10%, -15%), 50Hz (± 5%), grounding resistance less than 4 ohms
Environment: Indoor installation and use, 0-40 ℃ non freezing, no condensation below 90% RH, no corrosion, flammable and explosive gases
Below 1000m altitude and 5.9m/s (0.6g)
HLXB Box Pump StationFeatures:
1. No need to build high-level water tanks, ground (underground) water tanks - clean, hygienic, efficient, energy-saving, and cost-effective
The WFG series non negative pressure water supply equipment is economical and hygienic, fully utilizes the pressure potential energy of municipal water sources, and maximizes the energy-saving effect of variable frequency speed regulation. Practice has proven that using direct connected non negative pressure water supply equipment can save more than 50% of the construction cost of water tanks, and compared with other water supply equipment, can save 20% -40% of electricity.
2. Low operating noise
Adopting variable frequency speed regulation operation, especially using a full frequency control system, most of the time, especially at night, it operates at low speed and low noise.
3. The use of fully enclosed diaphragm tanks with buffering and dynamic compensation functions is more practical than ordinary non negative pressure water supply equipment currently on the market. And simplify the control system.
4. Product *, reliable quality, high standardization, good universality
Adopting standardized and universal control system technology solutions, key components in the product, such as motors, water pump bearings, frequency converters, regulators PLC、 Used with other components domesticallyIt can also be replaced with corresponding components from any manufacturer, making debugging and maintenance convenient.
5. Fully functional and highly intelligent, with adaptive features including variable frequency control technology, soft start, overload, short circuit, overvoltage, undervoltage, phase loss, overheating, and stall protection. In abnormal situations, it can perform signal alarms, self checks, fault diagnosis, etc., and can also automatically adjust the water supply flow according to the high or low water consumption. When the frequency converter fails, it will automatically downgrade and operate (becoming a power frequency automatic water supply equipment). When the automatic system fails, it can also manually operate the emergency backup to win maintenance time.
6. Personalized design, long lifespan
If the user needs it, devices and installation forms that meet the user's required parameters can be designed. Various communication interfaces and protocols can be selected according to requirements, so as to connect various human-machine interfaces, monitoring computers, and connect with various control networks and communication networks. It is suitable for special and complex life constant pressure variable frequency water supply equipment.
HLXB Box Pump StationCore components:
1. Combination stainless steel water tank (with pump room).
2. Intelligent electrical control system.
3. Low noise stainless steel multi-stage centrifugal pump (CDL series).
4. No negative pressure inlet device and anti backflow device.
5. Stainless steel complete piping system.
6. Pressure and liquid level signal acquisition and feedback facilities.
Characteristics of Intelligent Box Pump Station Equipment:
1. Integrated professional design, compact structure, direct installation of the system in the water tank (reducing the construction of pump rooms if outdoors), low investment, easy installation, and beautiful appearance.
2. By utilizing the superposition of pipeline pressure and automatic frequency conversion operation mode, the energy-saving effect has been significantly improved (40% for large pipelines).
3. Easy to install, with only one municipal pipeline inlet and one water supply outlet.
4. Stable operation, low vibration, and low noise (noise level below 50 decibels).
5. The system's water supply is stable (even if the pipeline network is temporarily cut off, it can still be supplied normally through the water tank), fully ensuring the pressure at the end of the system.
6. Automatic inspection function can be added to reduce property management costs.
7. Adopting PLC programmable control for fully automatic operation, easy operation and maintenance.
HLXB Box Pump StationCompared with ordinary water supply equipment:
Water supply method: If ordinary water supply equipment is directly connected in series to the tap water pipeline, there will be suction during operation, causing negative pressure in the tap water network. If used on a large scale, it will lead to water grabbing and cause chaos in the city's water supply. So people adopt the method of repairing stainless steel water tanks or setting up water tanks for secondary pressurized water supply. All tap water is put into the stainless steel water tank or water tank for secondary pressurized water supply.
HLXB Box Pump StationSelection suggestion: Currently, our company producesHLXB Box Pump StationThe precision and energy-saving effect of the control equipment are the same in both fixed and cyclic methods, and the disturbance to the pipeline pressure during the switching process is also very small. The differences are: fixed equipment has less investment, simple operation and maintenance, and fewer fault points, but the mechanical wear and tear of the pump is greater when switching between power frequency pumps, and the service life of each pump is uneven; The circulation method can reduce mechanical wear during pump switching, ensuring a uniform service life for each pump. However, the disadvantage is that the equipment investment is relatively high, as this method may cause current surges during pump switching, which can lead to adhesion of the contactor contact points over time. Therefore, the quality requirements for the contactor are high. If not selected properly, it may damage the frequency converter. We suggest that for systems with lower control power, both methods can be used, while for systems with higher control power, a fixed method is better.
HLXB Box Pump StationInnovation:1In order to improve the reliability of the control system, we have specifically designed the reliability of the control circuit and software, such as programmable controllersPLCThe input and output terminals are both isolated by relays. If a controller is usedPLCThe output end of the contactor starts directly, but due to the large inductance of the contactor coil, it is easy to burn out after long-term operationPLCContact point, due to the controllerPLCThere is a control program in place, which can be difficult to replace due to malfunctions. Adopt measures for the controllerPLCThe isolation measures for input and output relays can improvePLCReliability due to the controllerPLCIt is the core of the entire control part, improvingPLCThe reliability of the whole machine is of great significance in improving its overall reliability.2Equipped with a water supply window(touch screen)In the control system equipment, photoelectric isolation measures are taken for communication between the touch screen and the frequency converter to ensure the safe operation and reliable communication of various electrical appliances.3In equipment equipped with a remote voice alarm system, when the device malfunctions and shuts down, it automatically dials the pre stored number to notify the equipment management personnel for timely maintenance to avoid affecting the user's water supply.4In large and medium-sized control systems, the cyclic soft start commonly used for equipment control has serious defects. During the conversion of water pumps from frequency conversion to power frequency, fatal electrical and mechanical impacts can be generated, which can endanger the safety of circuits and pipelines. Our company's developed impact free conversion technology can achieve impact free soft start and soft stop to avoid mechanical and electrical impacts. This technology is very important for application in large and medium-sized equipment.5In equipment with large fluctuations in water supply pressure requirements, variable voltage water supply can be used. The control system estimates the equipment flow rate based on the number of power frequency pumps turned on and the output frequency of the frequency converter, and compensates for the equipment outlet pressure to achieve further energy conservation6Our company can provide wired and wireless monitoring systems according to customer needs, transmitting the operating status of equipment to the monitoring center for real-time monitoring. The monitoring center can also control the operation of equipment in real time.7Our company's large-scale water plant monitoring system adoptsSCADThe control system, with centralized detection and decentralized control, has high flexibility and reliability.8Our company has successfully applied high-voltage frequency conversion to the water plant project and achieved good social benefits.Integrated Tank Pump Water TankWater supply method: Using vacuum suppression technology, the water supply equipment is directly connected in series with the tap water network, without generating negative pressure and without the need to build a water tank,Set up a water tank. Water supply quality: All pure tap water is put into the pool, and various dirt can easily enter the pool, seriously polluting the water source. Especially in summer, the water is prone to deterioration and odor, affecting the health of users.Integrated Tank Pump Water TankWater supply quality: Pure tap water is directly supplied to residents after being pressurized, and a steady flow compensator is usedSUS304Stainless steel material, sealed connection, no pollution, users can drink drinking water that meets hygiene standards.
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