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System characteristics and function introduction of variable frequency constant pressure water supply pump
Time: 2020-02-06 17:27 Source: win of Water: Water factory in winning hits: Times

System characteristics and function introduction of variable frequency constant pressure water supply pump

Overview of variable frequency constant pressure water supply pump

The theoretical title is the variable frequency constant pressure water supply system. Because it adopts advanced control technologies such as PID control, fuzzy control, and microcomputer control, and is equipped with imported high-quality frequency converters, electronic water level controllers, fault alarms and comprehensive protection, it has high reliability Flexible and reasonable operation mode, and has comprehensive comprehensive supporting functions. One instrument that achieves this function is a variable frequency constant pressure water supply controller.
Features of variable frequency constant pressure water supply pump system :
变频恒压供水泵 时尚外观,大尺寸液晶,显示信息全面。 1. Highly simple and convenient frequency converter constant pressure water supply pump with stylish appearance, large size LCD and comprehensive display information. Rich and perfect Chinese prompts, so that ordinary operators can apply various operations freely without complex training, without the need for professional engineers to operate them, saving time and making operations easier. At the same time, the control system can clearly display the operating conditions of its power frequency, frequency conversion and conversion on the Chinese display screen.
2, full LCD parameter display, clear settings, can set the supplier service phone (user-set), to facilitate contact as soon as possible to troubleshoot related problems.
3. The fault query function can confirm the latest alarm time (year, month, day, hour, minute, second) and content, and record a total of ten fault information, which is convenient for understanding the controller operation and the overall system status.
4. Simple and convenient maintenance. Unique system fault detection and clear fault location (Chinese) prompts enable engineers to understand the fault clearly, help maintenance staff to check the location and cause of the fault, and take timely and targeted actions.
5, using dual CPU structure design, more powerful, more reasonable design, more stable operation.
6, time and date setting function, convenient to record the time when various fault conditions occur, convenient to check and recheck.
7. The fuzzy control principle is used to automatically optimize the parameters. The operation is simple and convenient, the response is fast, the accuracy is high, and the pressure shock of the pipe network is small when the pump is switched.
8. Regular pump change function prevents the same pump from running for too long, and can be accurate to the specific time, scientifically allocates the working time of each pump, records the operating time of each pump, and improves the average service life of the pump.
9, provides two energy-saving methods: sleep function and auxiliary small pump function.
The sleep function enables the unit to start and stop automatically in an area of zero flow every day. The intermittent water supply mode makes the power saving effect better. The auxiliary small pump function can solve the emergency use when the water consumption is small, and save the power of starting the large pump.
10. Ultra-high pressure, no water, pressure signal, explosion-proof pressure and other automatic detection functions, automatic pump stop function to avoid pipe explosion and equipment damage, safe and stable.
11, Two types of water supply modes are provided: cycle start and direct start, making the water supply pressure more stable during peak periods.
12, multi-point monitoring design, to meet the needs of variable frequency water supply in different occasions, no water supply dead zone problem
13. The communication function of the inverter is optional, and the operation is simple and convenient. When the field personnel encounters a problem, the controller can be connected through a telephone line. The manufacturer can remotely adjust and solve the problem, save money and respond quickly.
14, automatic fault shielding function, when a pump in the system fails, the system can automatically skip the pump to run, not affected by the faulty pump, make the water supply pressure more stable, and better protect the equipment safety.
15, password function (parameter setting requires a password to set), security settings to prevent misoperation.
16. The maximum control range is 4 + 2 (four main pumps and two small pumps): up to 4 main pumps plus 2 auxiliary pumps can realize automatic control at the same time to meet various complex water supply requirements.
17. The switching output is all relay output, which can directly drive the contactor.
18. The analog and switch quantities are all photoelectrically isolated, with strong anti-interference ability and comprehensively improving electromagnetic compatibility.
19. Strong adaptability, can be matched with various pressure sensors and inverters at home and abroad, and has a wide range of applications.
20. At the equipment work site, engineering personnel can change various control parameters at any time according to the actual situation of the pump set under the display prompt, thereby ensuring that the pump set is in the optimal operating state.
21, perfect inverter protection and water pump motor protection function, Henan does not need special personnel to run.
22. Make all water pumps standby for each other, which can shield various operations of the maintenance pump or long-term shutdown pump and control according to the new water pump combination.
23. Small flow or zero flow "sleep" and automatic wake-up function, saving energy and reducing consumption, extending the use time.
24. Timed water supply function, which can set water supply at any time.
25. The system can be connected to the upper computer, and the professional software is designed to monitor the operation of the pump set in real time from the computer, pressure and frequency parameters of each time period, record the parameters of the system operation, automatically store, and generate forms to print out. Low overall cost.
26. The wireless sending function is optional, and it can reach two kilometers long-distance wireless monitoring to realize intelligent management. The system is simple and powerful.
27. The system pressure set value and pressure start-stop interval can be adjusted arbitrarily, and the pressure adjustment accuracy is less than plus or minus 0.1MPA
28, On the screen interface, the hand can be exchanged automatically and arbitrarily, and the interface can be any manual pump.
29. The emergency circuit is designed. If the Mitsui recommended circuit is used, even if the man-machine interface device is damaged due to force majeure, it will not affect the emergency frequency conversion operation.
变频恒压供水泵 功能介绍 Features of Zhongying High Efficiency Low Noise Inverter Constant Pressure Water Supply Pump
Manual / automatic conversion:
The device provides users with multiple operation modes. The device control panel has manual and automatic control modes, which are selected by the "manual / automatic" switch on the control panel. When the automatic operation is selected and the "start, stop" switch is turned to the start position, there is no need for human intervention in the operation of the device, and the device runs fully automatically under the control of the microcomputer according to the set program.
Anti-interference shielding:
Because the equipment is controlled by frequency conversion, high-frequency radiation is likely to cause interference during the process of frequency conversion control, and then the equipment requires high control accuracy and sensitivity to external interference. Therefore, the equipment is equipped with the above functions to effectively protect the normal operation requirements of the equipment.
供水方式还可以分成下述两种形式: The water supply method of the variable frequency constant pressure water supply device can also be divided into the following two forms:
A, water supply pipeline-→ underground regulation pool-→ water pump-→ user.
According to the pressure change at the water end of the user, the water supply pump is started by the pressure sensor to supply water.
B. Water supply pipeline-→ underground regulating pool-→ water pump-→ high-level regulating pool-→ user.
Supply water according to the height difference between the pool and the user.
Because the regulating pool can effectively handle the water volume, that is, the amount of water is stored at the peak of non-water consumption (at this time, the pressure of the water supplied by the water supply pipeline is filled to the underground regulation pool, and the float valve in the pool controls the water level) At the peak time, the above-mentioned two ways are provided to the user to store the amount of stored water, so that the reliability of the user's water can be effectively guaranteed. At the same time, because the pool is connected to the pump by adjusting the water pump, the pump will never generate negative pressure on the water supply network. . However, the self-pressure in the water supply network of this water supply method cannot be utilized by the pump, which will inevitably cause waste of energy.

Example The water supply company where I work, manages the equipment of many pump houses in this city. During the management process, it was found that the pump configuration of most pump rooms and the water supply of residential quarters were relatively large. From the perspective of energy saving, in actual work, we have modified the water supply mode of most pump rooms to achieve variable frequency and constant pressure control. And according to different water supply conditions, in a water supply district with a number of users of less than 100 households, we adopt Method 2 for water supply (we call it pipe-pumped water supply). The product of the constant pressure water supply device has no regulating pool, which reduces the factory shipment. Chance of water being polluted. There is also the use of jet technology for water supply. The purpose is to maximize the use of the water supply pressure of the municipal water supply network. However, this technology has a large water supply noise and is not suitable for the pump room built in the basement of a residential building.


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