CN209818234U - Water pump frequency conversion control device for water supply equipment - Google Patents
Water pump frequency conversion control device for water supply equipment Download PDFInfo
- Publication number
- CN209818234U CN209818234U CN201920514272.1U CN201920514272U CN209818234U CN 209818234 U CN209818234 U CN 209818234U CN 201920514272 U CN201920514272 U CN 201920514272U CN 209818234 U CN209818234 U CN 209818234U
- Authority
- CN
- China
- Prior art keywords
- water
- water pump
- water supply
- frequency conversion
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 177
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims description 9
- 230000001012 protector Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000004069 differentiation Effects 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001934 delay Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses a water pump frequency conversion controlling means for water supply equipment, including water tank, base, inlet tube, outlet pipe, water pump, detection device and frequency conversion controlling means, frequency conversion controlling means includes converter, PID regulator and PLC controller, detection device includes liquid level detector, first pressure detector and second pressure detector. The frequency conversion control device compares and analyzes the signals sent by the detection device, and controls the water pump to operate through the frequency converter, so that the stability of water supply pressure can be ensured, the water hammer effect can be eliminated, and the slow start and slow stop of a water pump motor can be realized; meanwhile, the equipment can be timely shut down under the condition of municipal water supply failure or insufficient water supply capacity, so that the water supply equipment is protected from being damaged. The utility model discloses simple structure, easy and simple to handle, reasonable in design has improved water supply equipment's stability and security.
Description
Technical Field
The utility model relates to a water supply equipment field especially relates to a can provide constant voltage and go out water and high water pump variable frequency control device of security.
Background
At present, water supply equipment is generally used in communities and office buildings, the existing frequency-conversion constant-pressure water supply scheme can provide stable water supply at constant pressure for users, the water yield of the water supply equipment can be adjusted in real time according to the water demand, a PLC (programmable logic controller) is commonly adopted in the frequency-conversion constant-pressure water supply technology, a PID (proportion integration differentiation) regulator and a frequency converter are combined, the output frequency of the frequency converter is adjusted according to the set water yield pressure value through real-time monitoring of the water yield pressure so as to control the operation of a water pump motor, the frequent start and stop of the water pump motor in the traditional water supply mode can be avoided, and the water pump motor can be slowly started and slowly stopped and a water hammer can be prevented.
However, when the municipal pipe network stops water supply, the water consumption is high, and the municipal pipe network is insufficient in water supply stage or the water tank fails to supplement water, the water pump motor can be controlled to automatically start to idle due to the fact that the monitored water outlet pressure is smaller than the set water outlet pressure value in the existing variable-frequency constant-pressure water supply scheme, and the water pump and the motor are lost. There is no good solution to the above problems in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art not enough, provide a water pump frequency conversion control device for water supply equipment, normally supply water and the normal during operation of water tank at the net pipe way in the city, can be in real time according to user's water demand constant pressure play water, overcome water pump motor and frequently open and stop among the traditional water supply mode, realize that water pump motor slows down to stop, the water hammer. When the water supply of the urban network pipeline is cut off or the water supply can not be normally carried out, the monitoring feedback of the above conditions is realized, and the water pump motor is automatically cut off and shut down, so that the equipment loss caused by the idling of the water pump is prevented.
In order to solve the above problem, the utility model provides a following technical scheme:
a water pump frequency conversion control device for water supply equipment comprises a water tank, a base, a water inlet pipe, a water outlet pipe and a water pump, wherein the water inlet pipe is arranged on one side of the water tank and connected with a municipal water supply pipe network, the water outlet pipe is arranged on the other side of the water tank and connected with a water inlet of the water pump, the water tank is arranged above the base, the water pump frequency conversion control device also comprises a detection device and a frequency conversion control device, the detection device comprises a liquid level detector, a first pressure detector and a second pressure detector, the liquid level detector extends into the water tank from the outer side of the top of the water tank, preferably, the liquid level detector is a device comprising a liquid level pressure sensor, the first pressure detector is arranged on the water inlet pipe, the second pressure detector is; the frequency conversion control device comprises a PLC (programmable logic controller), a PID (proportion integration differentiation) regulator and a frequency converter, the second pressure detector is connected with one end of the PID regulator, the other end of the PID regulator is connected with one end of the PLC controller, the other end of the PLC controller is connected with the frequency converter, and the frequency converter controls the operation of a water pump motor; and the first pressure detector and the liquid level detector are both connected with one end of the PLC.
Further, the PLC controller is connected with a power supply through a delay relay, and the delay time of the delay relay is 5 seconds.
Furthermore, the PLC is connected with a power supply through an electrical isolation protector, and the electrical isolation protector is an isolation transformer.
Further, the PLC controller can exchange data with the remote control platform through the wireless transmission device. The wireless transmission equipment comprises a wireless network, and the remote control platform can be a computer or a mobile phone used by a manager.
Has the advantages that: the utility model provides a pair of water pump frequency conversion control device for water supply equipment, when the normal water supply of urban network pipeline and the normal work of water tank, can real-time detection pipeline go out the real-time water pressure of water, and send real-time water pressure signal to PID regulator, PID regulator calculates the pressure differential between real-time water pressure and the water pressure value in the outlet conduit of presetting, and exports the deviation value to the converter with voltage signal's mode, and the converter can confirm output frequency in view of the above to change the rotational speed of water pump motor, make the water pressure of going out stabilize near the water pressure value in the outlet conduit of presetting; so can overcome traditional water supply mode normal water pump motor and frequently open and stop, realize that the water pump motor slowly starts slowly and stops, waterproof hammer. Meanwhile, when the city network pipeline stops water supply, normal water supply cannot be realized or the water tank fails to work normally, the water supply or fault condition can be monitored, the water pump motor is automatically cut off and shut down, and equipment loss caused by idling of the water pump is prevented.
Drawings
Fig. 1 is a schematic structural view of the present invention;
1-a water tank; 2-a base; 3-water inlet pipe; 4-water outlet pipe; 5, a water pump; 6-liquid level detector; 7-a first pressure detector; 8-a second pressure detector; 9-a PLC controller; 10-PID regulator; 11-a frequency converter;
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and embodiments:
the water pump frequency conversion control device for the water supply equipment shown in fig. 1 comprises a water tank 1, a base 2, a water inlet pipe 3, a water outlet pipe 4 and a water pump 5, wherein the water inlet pipe 3 is arranged on one side of the water tank 1 and is connected with a municipal water supply network through a flange, the water outlet pipe 4 is arranged on the other side of the water tank 1 and is connected with a water inlet of the water pump 5 through a flange, and the water tank 1 is arranged above the base 2; the device comprises a detection device and a variable frequency control device, wherein the detection device comprises a liquid level detector 6, a first pressure detector 7 and a second pressure detector 8, the liquid level detector 6 extends into the water tank 1 from the outer side of the top of the water tank 1, and the liquid level detector 6 is a device comprising a liquid level pressure sensor; a first through hole is formed in the pipe wall of the water inlet pipe 3, an internal thread is formed in the first through hole, and the first pressure detector 7 penetrates through the first through hole, extends into the pipeline and is in threaded connection with the pipe wall of the water inlet pipe 3; be equipped with check valve and rubber soft joint on the pipeline that 5 delivery ports of water pump are connected, and be equipped with the second through-hole on the pipe wall, the second through-hole is equipped with the internal thread, and second pressure detector 8 passes the second through-hole and stretches into to the pipeline in, and with the pipeline wall threaded connection of 5 delivery ports of water pump one side. The first pressure detector 7 and the second pressure detector 8 are devices including pressure sensors, and are used for detecting water pressure in the pipeline where the pressure detectors are located.
The device also comprises a variable frequency control device, wherein the variable frequency control device comprises a PLC (programmable logic controller) 9, a PID (proportion integration differentiation) regulator 10 and a frequency converter 11; the second pressure detector 8 is connected with one end of a PID regulator 10 and transmits the effluent pressure value to the PID regulator 10 in real time, the other end of the PID regulator 10 is connected with one end of a PLC 9, the other end of the PLC 9 is connected with a frequency converter 11, and the frequency converter 11 controls the motor of the water pump 5 to operate;
the PID regulator 10 calculates a pressure difference between an outlet water pressure value and a preset outlet water pipeline internal pressure value, amplifies the pressure difference through a proportion link, introduces an integral link to effectively eliminate static errors, reduces response time through a differential link, inputs a result to the PLC controller 9, the PLC controller 9 outputs a signal to the frequency converter 11, converts the signal into a voltage signal, and the frequency converter 11 can determine output frequency according to the signal to change the rotating speed of the motor of the water pump 5 so that the outlet water pressure is stabilized near the preset outlet water pipeline internal water pressure value, and in addition, when the outlet water pressure of the water pump 5 is not equal to the preset outlet water pipeline internal water pressure value when the water pump 5 runs to full frequency, the water pump 5 is switched to power frequency operation.
The first pressure detector 7 and the liquid level detector 6 are both connected with one end of the PLC 9. The first pressure detector 7 collects a real-time water pressure value in the water inlet pipe 3 and inputs the real-time water pressure value into the PLC 9, the PLC 9 calculates a difference value between the real-time water pressure value in the water inlet pipe 3 and a preset first water pressure value, and judges the water supply state of the municipal pipe network according to the difference value, and when the fact that the water supply network stops water or the water supply capacity cannot meet the minimum water supply requirement of a user is displayed, the PLC 9 controls the water pump 5 to stop rotating through the frequency converter 11; in addition, the PLC 9 can also send an alarm signal to a manager through a wireless transmission device. The liquid level pressure sensor is used for acquiring a liquid level value in the water tank and outputting a liquid level value signal to the PLC 9, and when the PLC 9 judges that the liquid level value is lower than a set first liquid level value, the PLC 9 controls the water pump 5 to stop rotating through the frequency converter 11; in addition, the PLC 9 can also send an alarm signal to a manager through a wireless transmission device.
In addition, the PLC controller 9 and the power supply are provided with a delay relay and an electrical isolation protector, the delay time of the delay relay is 5 seconds, and the electrical isolation protector is an isolation transformer. When the water supply equipment is started, the main circuit is firstly electrified, and the circuit where the PLC 9 is located is electrified after the delay relay delays for 5s, so that current impact on the PLC 9 caused by instantaneous large current when the water supply equipment is started can be avoided; the isolating transformer separates the circuit where the PLC controller 9 is located from the main circuit, and damage to the PLC controller 9 when the main circuit fails can be prevented.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention all fall within the scope of the technical solution of the present invention.
Claims (4)
1. A water pump frequency conversion control device for water supply equipment comprises a water tank (1), a base (2), a water inlet pipe (3), a water outlet pipe (4) and a water pump (5), wherein the water inlet pipe (3) is arranged on one side of the water tank (1) and connected with a municipal water supply network, the water outlet pipe (4) is arranged on the other side of the water tank (1) and connected with a water inlet of the water pump (5), and the water tank (1) is arranged above the base (2), and the water pump frequency conversion control device is characterized by further comprising a detection device and a frequency conversion control device, wherein the detection device comprises a liquid level detector (6), a first pressure detector (7) and a second; the liquid level detector (6) extends into the water tank (1) from the outer side of the top of the water tank (1), the first pressure detector (7) is arranged on the water inlet pipe (3), and the second pressure detector (8) is arranged on one side of the water outlet of the water pump (5); the variable frequency control device comprises a PLC (programmable logic controller) controller (9), a PID (proportion integration differentiation) regulator (10) and a frequency converter (11); the second pressure detector (8) is connected with one end of a PID regulator (10), the other end of the PID regulator (10) is connected with one end of a PLC (9), the other end of the PLC (9) is connected with a frequency converter (11), and the frequency converter (11) controls the operation of a motor of the water pump (5); and the first pressure detector (7) and the liquid level detector (6) are both connected with one end of the PLC (9).
2. The water pump frequency conversion control device for the water supply equipment is characterized in that the PLC (9) is connected with a power supply through a time delay relay, and the time delay time of the time delay relay is 5 seconds.
3. The water pump frequency conversion control device for water supply equipment according to claim 2, characterized in that the PLC controller (9) is connected with the power supply through an electrical isolation protector, and the electrical isolation protector is an isolation transformer.
4. The water pump frequency conversion control device for the water supply equipment is characterized in that the PLC (9) can exchange data with a remote control platform through a wireless transmission device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920514272.1U CN209818234U (en) | 2019-04-16 | 2019-04-16 | Water pump frequency conversion control device for water supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920514272.1U CN209818234U (en) | 2019-04-16 | 2019-04-16 | Water pump frequency conversion control device for water supply equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209818234U true CN209818234U (en) | 2019-12-20 |
Family
ID=68880084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920514272.1U Expired - Fee Related CN209818234U (en) | 2019-04-16 | 2019-04-16 | Water pump frequency conversion control device for water supply equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209818234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119334852A (en) * | 2024-12-19 | 2025-01-21 | 广东和协建设工程检测有限公司 | A multi-channel automatic water supply system for concrete permeability tester |
-
2019
- 2019-04-16 CN CN201920514272.1U patent/CN209818234U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119334852A (en) * | 2024-12-19 | 2025-01-21 | 广东和协建设工程检测有限公司 | A multi-channel automatic water supply system for concrete permeability tester |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201704729U (en) | Pipe network pressure-superposition frequency conversion water supply system | |
| CN205329782U (en) | Intelligent no negative pressure booster pump station water supply equipment | |
| CN205046634U (en) | Pot -type does not have negative pressure steady voltage regulation water supply equipment | |
| CN104805884A (en) | Intelligent remote-monitoring type stable-pressure compensatory negative-pressure-free water supply device | |
| CN209818234U (en) | Water pump frequency conversion control device for water supply equipment | |
| CN208309701U (en) | A kind of Intelligent pipe net laminating water supply equipment with water tank | |
| CN205530462U (en) | One drags many types of intelligent variable frequency control cabinet and contains its constant pressure water supply system | |
| CN202595816U (en) | Intelligent negative-pressure-free frequency conversion constant-voltage water supply system | |
| CN201416184Y (en) | Integrated non-negative pressure water supply equipment | |
| CN103255808A (en) | Integrated ultra-silence water supply device | |
| CN205475479U (en) | Two drag three types intelligence variable frequency control cabinet and contain its constant pressure water supply system | |
| CN217521528U (en) | Automatic control system of oil pump | |
| CN216552193U (en) | Intelligent full-frequency-conversion water supply control cabinet | |
| CN201314061Y (en) | Computer-controlled fire water supply equipment | |
| CN213276347U (en) | Control circuit of water supply system | |
| CN206245393U (en) | A kind of microcomputer controls full variable-frequency speed-adjusting supply equipment | |
| CN205530482U (en) | Variable frequency speed governing(VFSG) constant voltage water supply system | |
| CN213572164U (en) | Public well water supply control system of life and water source heat pump set | |
| CN203096833U (en) | Ultra-silence non-negative pressure water supply device | |
| CN203498912U (en) | Multiple vertical joint water supply equipment | |
| CN113957956A (en) | Intelligent full frequency conversion water supply control cabinet | |
| CN218713540U (en) | Uninterrupted water supply system of secondary water supply pump room | |
| CN107354971A (en) | The Jing Yin accumulation of energy water work of PLC intelligent controls | |
| CN207553207U (en) | The mute accumulation of energy water work of PLC intelligent controls | |
| CN206205054U (en) | A kind of tier building water system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191220 |