CN207003545U - A kind of water supply pump constant pressure frequency conversion speed-regulating control device - Google Patents
A kind of water supply pump constant pressure frequency conversion speed-regulating control device Download PDFInfo
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- CN207003545U CN207003545U CN201720504651.3U CN201720504651U CN207003545U CN 207003545 U CN207003545 U CN 207003545U CN 201720504651 U CN201720504651 U CN 201720504651U CN 207003545 U CN207003545 U CN 207003545U
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- water
- supply
- pump
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- water pump
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Abstract
The utility model discloses a kind of water supply pump constant pressure frequency conversion speed-regulating control device, and it is related to water pump constant pressure frequency conversion speed regulating control technical field.Water supply pump group is installed inside tank, tank top is connected with water pipe, water supply pump group is mainly made up of two groups of supply-water pumps, the front end of every group of supply-water pump is provided with filter, one end of two groups of supply-water pumps is connected by water pipe with terminal temperature difference, weight check-valves is disposed with water pipe between supply-water pump and terminal temperature difference, butterfly valve, pressure sensor and electromagnetic flowmeter, and the other end of two groups of supply-water pumps is provided with pressure gauge on the spot, check-valves and filter, and two groups of supply-water pumps are connected by frequency converter and controller control, and controller connects with pressure sensor control.Rotating speed increase can be carried out to water pump in time and is controlled with reduction, dormancy and wake-up, the electrodeless continuous speed adjustment control of more water pumps is realized, reduces energy waste, extend the service life of water pump according to the running status and pressure divergence of water pump.
Description
Technical field
A kind of water supply pump constant pressure frequency conversion speed-regulating control device is the utility model is related to, belongs to water pump constant pressure frequency conversion speed governing control
Technical field processed.
Background technology
Existing more water pump constant pressure water supplies mainly carry out Flow-rate adjustment by two ways such as machinery throttling and multistep speed regulations.It is right
In mechanical throttle style, such a mode is to carry out Flow-rate adjustment by changing system pipe network characteristic, in water consumption change procedure,
The changed power very little consumed, energy waste are serious；For multistep speed regulation mode, such a mode needs cooperative mechanical throttling side
Formula is adjusted, and can also produce certain energy waste, at the same water pump can frequently start and stop, can not only reduce the service life of equipment,
And the generation of equipment breakdown can be increased.
Utility model content
In view of the above-mentioned problems, the technical problems to be solved in the utility model is to provide a kind of water supply pump constant pressure frequency conversion speed governing
Control method.
The utility model water supply pump constant pressure frequency conversion method for controlling speed regulation, it include supply-water pump, weight check-valves, butterfly valve,
Pressure sensor, electromagnetic flowmeter, terminal temperature difference, controller, frequency converter, check-valves, filter, on the spot tank, pressure gauge
And water pipe, water supply pump group is installed inside tank, tank top is connected with water pipe, described water supply pump group master
To be made up of two groups of supply-water pumps, the front end of every group of supply-water pump is provided with filter, and one end of two groups of supply-water pumps passes through water pipe
It is connected with terminal temperature difference, weight check-valves, butterfly valve, pressure sensing is disposed with the water pipe between supply-water pump and terminal temperature difference
Device and electromagnetic flowmeter, and the other end of two groups of supply-water pumps is provided with pressure gauge, check-valves and filter on the spot, and two groups of water supply
Pump is connected by frequency converter and controller control, and controller connects with pressure sensor control.
The beneficial effects of the utility model：It can overcome the drawbacks of prior art, can according to the running status of water pump and
Pressure divergence, rotating speed increase and reduction, dormancy are carried out to water pump in time and is waken up to control, realizes the electrodeless continuous tune of more water pumps
Speed control, systems stabilisation pressure of supply water, reduces unnecessary energy waste, extends the service life of water pump, reduces equipment breakdown
Generation, lifted automatic controlling level.And this device has the characteristics of simple in construction, dependable performance, energy waste can be reduced,
Extension device service life.
Brief description of the drawings
For ease of explanation, the utility model is described in detail by following specific implementations and accompanying drawing.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is electric control theory structure chart of the present utility model；
Fig. 3 is control flow chart of the present utility model.
Reference：Supply-water pump 1, weight check-valves 2, butterfly valve 3, pressure sensor 4, electromagnetic flowmeter 5, terminal temperature difference 6,
Controller 7, frequency converter 8, check-valves 9, filter 10, on the spot tank 11, pressure gauge 12, water pipe 13.
Embodiment
As Figure 1-3, present embodiment uses following technical scheme：It include supply-water pump 1, weight check-valves 2,
Butterfly valve 3, pressure sensor 4, electromagnetic flowmeter 5, terminal temperature difference 6, controller 7, frequency converter 8, check-valves 9, filter 10, water storage
Pond 11, on the spot pressure gauge 12 and water pipe 13, water supply pump group, the top of tank 11 and filling pipe are installed inside tank 11
Road 13 is connected, and described water supply pump group is mainly made up of two groups of supply-water pumps 1, and the front end of every group of supply-water pump 1 is provided with filter
10, one end of two groups of supply-water pumps 1 is connected by water pipe with terminal temperature difference 6, on the water pipe between supply-water pump 1 and terminal temperature difference 6
It is disposed with weight check-valves 2, butterfly valve 3, pressure sensor 4 and electromagnetic flowmeter 5, and the other end peace of two groups of supply-water pumps 1
Equipped with pressure gauge 12 on the spot, check-valves 9 and filter 10, and two groups of supply-water pumps 1 are connected by frequency converter 8 and the control of controller 7
Connect, and controller 7 connects with the control of pressure sensor 4.
The operation principle of present embodiment is：System uses a controller 7, while more frequency converters 8 are carried out
Control, every frequency converter 8 correspond to a supply-water pump 1, and setting pressure setting value is constant in controller 7, meet system requirements holding
Constant pressure, while the collection site pressure value of controller 7, and set-point is compared calculating deviation, inside is with selectivity
PID control method realizes the rotational speed regulation to supply-water pump 1.When outside water demand is less, now a supply-water pump 1 can expire
Sufficient water consumption, controller 7 individually carry out PID regulations according to pressure divergence to this supply-water pump 1, and regulation site pressure is pressed with setting
Power is of substantially equal, and other supply-water pumps 1 are in a dormant state；When outside water demand is stepped up, reaches First supply-water pump 1 and set
During meter ability, the supply-water pump 1 of First keeps oepration at full load with 50Hz, after oepration at full load 5s, now wakes up second
Supply-water pump 1 with 10Hz stable operations, as outside water consumption continues to increase, the supply-water pump 1 of second is entered as governor impeller
Row pressure is adjusted, and with the increase and reduction of the big minor adjustment rotating speed of pressure divergence, keeps system pressure constant；When outside water consumption by
It is decrescence few, after the supply-water pump 1 of second remains on 60s with 10Hz, the supply-water pump 1 of now 7 dormancy of controller second, adjustment
The supply-water pump 1 of First is used as governor impeller, with the big minor adjustment pump rotary speed of pressure divergence, keeps system pressure constant.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (1)
- A kind of 1. water supply pump constant pressure frequency conversion speed-regulating control device, it is characterised in that：It includes supply-water pump (1), weight check-valves (2), butterfly valve (3), pressure sensor (4), electromagnetic flowmeter (5), terminal temperature difference (6), controller (7), frequency converter (8), non-return Valve (9), filter (10), on the spot tank (11), pressure gauge (12) and water pipe (13), tank (11) is internal to be provided with Water supply pump group, tank (11) top are connected with water pipe (13), and described water supply pump group is mainly by two groups of supply-water pump (1) groups Into the front end of every group of supply-water pump (1) is provided with filter (10), and one end of two groups of supply-water pumps (1) passes through water pipe and end User (6) is connected, and weight check-valves (2), butterfly valve are disposed with the water pipe between supply-water pump (1) and terminal temperature difference (6) (3), pressure sensor (4) and electromagnetic flowmeter (5), and the other end of two groups of supply-water pumps (1) be provided with the spot pressure gauge (12), Check-valves (9) and filter (10), and two groups of supply-water pumps (1) are connected by frequency converter (8) and controller (7) control, and control Device (7) processed connects with pressure sensor (4) control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720504651.3U CN207003545U (en) | 2017-12-04 | 2017-12-04 | A kind of water supply pump constant pressure frequency conversion speed-regulating control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720504651.3U CN207003545U (en) | 2017-12-04 | 2017-12-04 | A kind of water supply pump constant pressure frequency conversion speed-regulating control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207003545U true CN207003545U (en) | 2018-02-13 |
Family
ID=61442824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720504651.3U Expired - Fee Related CN207003545U (en) | 2017-12-04 | 2017-12-04 | A kind of water supply pump constant pressure frequency conversion speed-regulating control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207003545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117703728A (en) * | 2023-12-13 | 2024-03-15 | 广州市百福电气设备有限公司 | Method, system, equipment and medium for detecting sleep state of water supply frequency converter |
-
2017
- 2017-12-04 CN CN201720504651.3U patent/CN207003545U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117703728A (en) * | 2023-12-13 | 2024-03-15 | 广州市百福电气设备有限公司 | Method, system, equipment and medium for detecting sleep state of water supply frequency converter |
| CN117703728B (en) * | 2023-12-13 | 2024-05-24 | 广州市百福电气设备有限公司 | Method, system, equipment and medium for detecting sleep state of water supply frequency converter |
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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: 20180213 Termination date: 20191204 |