CN210562428U - Variable-frequency constant-pressure water supply equipment based on unfavorable points - Google Patents
Variable-frequency constant-pressure water supply equipment based on unfavorable points Download PDFInfo
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- CN210562428U CN210562428U CN201921298023.XU CN201921298023U CN210562428U CN 210562428 U CN210562428 U CN 210562428U CN 201921298023 U CN201921298023 U CN 201921298023U CN 210562428 U CN210562428 U CN 210562428U
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Abstract
The utility model relates to a frequency conversion constant voltage water supply equipment based on unfavorable point belongs to frequency conversion constant voltage equipment's technical field. Including pump package, PLC controller, pressure sensor and flowmeter, the outlet end and the play water pipe network intercommunication of pump package, the pump package is including the frequency conversion water supply branch road of a plurality of frequency conversion pumps of parallelly connected, pressure sensor and flowmeter locate the most unfavorable water point department pipe network respectively, the PLC controller respectively with frequency conversion pump, pressure sensor and flowmeter electric connection. And the water outlet pipe network and the pipe network at the most unfavorable water utilization point are respectively provided with pressure maintaining tanks, and the two pressure maintaining tanks are redundant with each other. The method and the device have the advantages that the pressure and the flow rate of water for a user are more stable and reliable by the aid of the closed feedback of the pressure and the flow rate at the water point; the operation efficiency of the variable frequency pump is improved, and when water is used at a small flow, the pressure maintaining tank at the most unfavorable water point is utilized, so that the water loss of a water outlet pipe network is avoided, the starting times of the variable frequency pump are reduced, and the energy conservation and consumption reduction are further realized.
Description
Technical Field
The utility model relates to a frequency conversion constant voltage water supply equipment based on unfavorable point belongs to frequency conversion constant voltage equipment's technical field.
Background
The variable-frequency constant-pressure water supply technology is developed on the basis of an automatic control technology, a computer technology and a PLC technology. The rotating speed of the water pump is automatically adjusted according to water use changes, so that the water use requirements of users are met, and compared with a constant-speed water pump, the variable-frequency water pump has a good energy-saving effect. The variable frequency water pump water supply mode has the characteristics of low energy consumption, no secondary pollution and the like, and is gradually and widely applied to a community secondary water supply system. At present, the secondary pressurized water supply system in China usually adopts a pressurized water supply mode of pipe network pressure-superposed variable-frequency water supply to supply water.
For the variable-frequency speed-regulating water pump, a constant-pressure control mode is usually adopted in a control mode, a pressure sensor is installed at a water outlet pipeline of the water pump, then a constant water pressure is set, and the rotating speed of a motor, the rotating speed of the water pump, the number of running water pumps and the like are adjusted, so that the water demand of users in a community is met. However, designers often ignore the efficiency speed regulation limit of the water pump and the hydraulic characteristics of the pipe network, thereby causing energy consumption waste, if the water consumption is less than the maximum design flow, the actual demand pressure of the pipe network is inevitably less than the water supply pressure, and at this time, the redundant water head pressure will cause waste. If the pipe network is too long, the pressure control effect is not ideal. When the worst disadvantage is small in flow water consumption, the equipment is frequently started, the water loss of the pipe network is serious, and the energy conservation and consumption reduction are not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a frequency conversion constant voltage water supply equipment based on unfavorable point is provided to above-mentioned prior art, when the minimum discharge water of most unfavorable point, reduces the water pump and starts the number of times, avoids pipe network water loss, further energy saving and consumption reduction.
The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a frequency conversion constant voltage water supply equipment based on unfavorable point, includes pump package, PLC controller, pressure sensor and flowmeter, the play water end and the play water pipe network intercommunication of pump package, the pump package is including the frequency conversion water supply branch road of a plurality of frequency conversion pumps that connect in parallel, most unfavorable water point department pipe network is located respectively to pressure sensor and flowmeter, the PLC controller respectively with frequency conversion pump, pressure sensor and flowmeter electric connection, with the pressure value of pressure sensor monitoring, the flow value feedback of flowmeter monitoring to the PLC controller, the running state of PLC controller adjustment frequency conversion pump.
And pressure maintaining tanks are respectively arranged on the water outlet pipeline and the pipe network at the most unfavorable water utilization point, and the two pressure maintaining tanks are redundant with each other.
The flowmeter is an electromagnetic flowmeter.
Compared with the prior art, the utility model has the advantages of: the utility model provides a frequency conversion constant voltage water supply equipment based on unfavorable point, changes the pressure sensor on the outlet pipe net of frequency conversion pump delivery end department into and installs at the most unfavorable water point department of pipe network to install the electromagnetic flowmeter additional at the most unfavorable water point department, give PLC controller with the transmission of signal line transmission feedback of the water pressure and the flow of the most unfavorable point, PLC controller adjustment frequency conversion pump's actual operation work. The method and the device have the advantages that the pressure and the flow rate of water for a user are more stable and reliable by the aid of the closed feedback of the pressure and the flow rate at the water point; the operation efficiency of the variable frequency pump is improved, and the power consumption of the equipment can be effectively reduced by 8-10%; and when the small flow water is used, the pressure maintaining tank at the most unfavorable water point is utilized, the water loss of a water outlet pipe network is avoided, the starting times of the variable frequency pump are reduced, and the energy is further saved and the consumption is reduced.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention, illustrating an unfavorable variable frequency constant pressure water supply device;
FIG. 2 is a flow chart of the operation of the variable-frequency constant-pressure water supply equipment according to the embodiment of the present invention;
in the figure, 1 a variable frequency pump, 2 a water outlet pipe network, 3 a pressure maintaining tank, 4 a pressure sensor and 5 an electromagnetic flowmeter.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 and 2, the variable-frequency constant-pressure water supply equipment based on the disadvantages in this embodiment includes a pump set, a PLC controller, a pressure sensor 4, and an electromagnetic flowmeter 5, where the pump set includes a plurality of variable-frequency water supply branches of a variable-frequency pump 1 connected in parallel, and the variable-frequency pump 1 includes a frequency converter, a motor, and a water pump. A plurality of frequency conversion water supply branch roads are respectively communicated with the water outlet pipe network 2, and the pressure maintaining tank 3 is arranged on the water outlet pipe network 2, so that the water loss of the water outlet pipe network 2 is reduced. The pressure sensor 4 and the electromagnetic flowmeter 5 are respectively arranged on the pipe network at the most unfavorable water utilization point and are used for detecting the water utilization pressure and the flow of the pipe network at the most unfavorable water utilization point. PLC controller respectively with inverter pump 1, pressure sensor 4 and 5 electric connection of electromagnetic flowmeter, the PLC controller receives the pressure value of pressure sensor 4 monitoring, the flow value of 5 monitoring of electromagnetic flowmeter, the water demand of PLC analysis least used water point department pipe network, the PLC controller adjusts and optimizes inverter pump 1's rotational speed, inverter pump 1's operation quantity etc to satisfy least used water point department pipe network user's water demand.
In addition, the pressure maintaining tank 3 is additionally arranged on the pipe network at the most unfavorable water utilization point, and the pressure maintaining tank 3 at the water outlet pipe network 2 are mutually redundant.
The pressure sensor 4 on the water outlet pipe network 2 at the water outlet end of the variable frequency pump 1 is changed to be installed at the position of the least-used water point of the pipe network, the electromagnetic flowmeter 5 is additionally installed at the position of the least-used water point, the water pressure and the water flow of the least-used water point are transmitted and fed back to the PLC through signal lines, and the PLC adjusts the actual operation work of the variable frequency pump 1. The pressure and the flow of the water for users are more stable and reliable by the closed feedback of the pressure and the flow at the most useless water point; the operation efficiency of the variable frequency pump 1 is improved, and the power consumption of the equipment can be effectively reduced by 8-10%. By utilizing the pressure maintaining tank 3 at the most unfavorable water consumption point, the water loss of the water outlet pipe network 2 is avoided when water is consumed at a small flow, the starting times of the variable frequency pump 1 are reduced, and the energy is further saved and the consumption is reduced.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (3)
1. The utility model provides a frequency conversion constant voltage water supply equipment based on unfavorable point which characterized in that: including pump package, PLC controller, pressure sensor (4) and flowmeter, the play water end and play water pipe network (2) intercommunication of pump package, the pump package is including the frequency conversion water supply branch road of a plurality of frequency conversion pumps (1) that connect in parallel, most unfavorable water point department pipe network is located respectively to pressure sensor (4) and flowmeter, the PLC controller respectively with frequency conversion pump (1), pressure sensor (4) and flowmeter electric connection, with pressure value, the flow value feedback to the PLC controller of flowmeter monitoring of pressure sensor (4) monitoring, the running state of PLC controller adjustment frequency conversion pump (1).
2. The variable-frequency constant-pressure water supply equipment based on the unfavorable points of claim 1, which is characterized in that: and the water outlet pipe network (2) and the pipe network at the position of the least-used water point are respectively provided with a pressure maintaining tank (3), and the two pressure maintaining tanks (3) are mutually redundant.
3. The variable-frequency constant-pressure water supply equipment based on the unfavorable points of claim 1, which is characterized in that: the flowmeter is an electromagnetic flowmeter (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921298023.XU CN210562428U (en) | 2019-08-12 | 2019-08-12 | Variable-frequency constant-pressure water supply equipment based on unfavorable points |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921298023.XU CN210562428U (en) | 2019-08-12 | 2019-08-12 | Variable-frequency constant-pressure water supply equipment based on unfavorable points |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210562428U true CN210562428U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921298023.XU Active CN210562428U (en) | 2019-08-12 | 2019-08-12 | Variable-frequency constant-pressure water supply equipment based on unfavorable points |
Country Status (1)
| Country | Link |
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| CN (1) | CN210562428U (en) |
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2019
- 2019-08-12 CN CN201921298023.XU patent/CN210562428U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 214400 No.23 Dongsheng Road, Jiangyin high tech Zone, Wuxi City, Jiangsu Province Patentee after: Jiangsu Chengshui IOT Technology Co.,Ltd. Address before: 214400 No.66 Yangzijiang Road, Jiangyin hi tech Zone, Wuxi City, Jiangsu Province Patentee before: JIANGYIN HUAKONG HABITAT WATER SUPPLY TECHNOLOGY SERVICE Co.,Ltd. |
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| CP03 | Change of name, title or address |