CN202510380U - Flow regulating device of reflux type centrifugal water pump - Google Patents
Flow regulating device of reflux type centrifugal water pump Download PDFInfo
- Publication number
- CN202510380U CN202510380U CN 201220031995 CN201220031995U CN202510380U CN 202510380 U CN202510380 U CN 202510380U CN 201220031995 CN201220031995 CN 201220031995 CN 201220031995 U CN201220031995 U CN 201220031995U CN 202510380 U CN202510380 U CN 202510380U
- Authority
- CN
- China
- Prior art keywords
- flow
- water pump
- pipeline
- flow regulating
- threeway
- 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
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to a flow regulating device of a reflux type centrifugal water pump. The output end of the centrifugal water pump is connected with a first tee through a pipeline, the first tee is connected with a first flow regulating valve through the pipeline, and the first flow regulating valve is connected with a second check valve through the pipeline; and the first tee is connected with a second flow regulating valve through the pipeline, the second flow regulating valve is connected with a second tee through the pipeline, and the second tee is respectively connected with a water source and the centrifugal water pump through the pipelines. The flow regulating device has the beneficial effects that stepless adjustment of output flow and pressure is realized in a way of enabling part of flow at a pump port to reflux, the reflux water flow can form circulation in the water pump, on the one hand, the water pump can work in the position which is close to an optimal working point and hydraulic loss is reduced, and on the other hand, energy head carried in water flow can be fed back to an inlet of the water pump, and the power of an input shaft of the water pump can be greatly reduced; the final reaction is that electrical energy consumed for operation of the water pump is reduced; and the structure is simple and the cost is low.
Description
Technical field
The utility model relates to a kind of output flow and pressure regulator of Centrifugal water pump, a kind of return flow type centrifugal water pump flow regulator that utilizes the size that refluxes water pump output flow and pressure to be implemented control.
Background technique
Centrifugal water pump uses extremely extensive in every profession and trade.In water pump system design, for the purpose of security insurance, generally select flow, water pump that lift is bigger slightly than requirement of actual working condition for use, utilize the flow pressure controlling device to make it be operated in needed operating mode then.In order to realize the stepless adjustable of its output flow and pressure, generally adopt the adjustment of throttle valve throttling adjustment or motor band frequency variator speed change at present.Throttling is easy to adjust reliable, but is accompanied by bigger energy waste, and this waste is very surprising for large pump.The significant deficiency that scheme is reconciled in existing throttling is it and selects for use big water pump then by forcing throttling that it is operated under the state that departs from best operating point; Name a person for a particular job and cause water impact to lose that is hydraulic loss because pump inner piece geometrical shape, departs from this all by best operating point design.The water pump of for example hundreds of and even last megawatt, the energy loss more than 20% ~ 30% is unrare.Frequency variator adjustment its initial stage input cost for big water pump is bigger, all will be more than 1,000,000 yuan like above-mentioned large pump frequency convertor system that motor is joined investment.
Summary of the invention
The purpose of the utility model is, solves above-mentioned existing existing problem, provides a kind of with low cost, can reduce the return flow type centrifugal water pump flow regulator of hydraulic loss.
The utility model is achieved in that main line comprises water source, centrifugal water pump, first flow modulating valve and second safety check; Return-flow structure comprises first threeway, second flow control valve and second threeway; The centrifugal water delivery side of pump connects first threeway through pipeline, and first threeway connects the first flow modulating valve through pipeline, and the first flow modulating valve connects second safety check through pipeline; First threeway connects second flow control valve through pipeline, and second flow control valve connects second threeway through pipeline, and second threeway connects water source, centrifugal water pump inlet respectively through pipeline; Regulate the first flow modulating valve and second flow control valve, can regulate the flow that returns the centrifugal water pump inlet, and then control is via the flow and the pressure of flow control valve output.
Beneficial effect of the present invention:
The present invention utilizes the mode of pumping hole flow partial reflux to realize the stepless adjustment of output flow and pressure, and backwater makes pump working near best operating point in the inner formation circulation of water pump self on the one hand, has reduced hydraulic loss.Its entrained energy head feeds back to pump entrance on the other hand, makes the input shaft power of water pump significantly reduce, and end reaction is that the running consumed power of water pump reduces.
Table 1 and table 2 are two groups of laboratory datas, corresponding respectively existing throttling regulation structure and the used backflow regulation structure of this programme.Need to prove, delivery pressure and flow be first group of data of 0 corresponding be that the first flow modulating valve closes extremely fully, the operating mode when promptly vexed car starts.Contrast two tables are visible, and under the output flow situation identical with pressure, the backflow regulation structure reduces than throttling regulation structure power consumption significantly, and is energy-conservation generally more than 15%.
Table 1 throttle type Flow-rate adjustment structure
| Delivery pressure (Mp) | 0 | 0.4 | 0.22 | 0.25 |
| Output flow (L/30s) | 0 | 10.1 | 8.6 | 5.5 |
| Electric current (A) | 6.4 | 4.82 | 4.85 | 5.1 |
| Current ratio % | 100 | 100 | 100 | 100 |
Table 2 return flow type Flow-rate adjustment structure
| Delivery pressure (Mp) | 0 | 0.4 | 0.22 | 0.25 |
| Output flow (L/30s) | 0 | 10.1 | 8.6 | 5.5 |
| Electric current (A) | 3.5 | 3.97 | 3.96 | 4.1 |
| Current ratio % | 54.7 | 82.4 | 81.6 | 80.4 |
In addition, owing to whole apparatus structure is simple, with low cost, compare with frequency control of motor speed formula regulation structure to have clear superiority.Preresearch estimates, this programme investment is practiced thrift cost more than 90% than frequency control of motor speed formula regulating system.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model.
Embodiment
Specify below in conjunction with accompanying drawing: main line comprises water source, first safety check 7, centrifugal water pump, first flow modulating valve and second safety check; Return-flow structure comprises first threeway 2, second flow control valve 5 and second threeway 6; The output terminal of centrifugal water pump 1 connects first threeway, 2, the first threeways 2 through pipeline and connects first flow modulating valve 3 through pipeline, and first flow modulating valve 3 connects second safety check 4 through pipeline; First threeway 2 connects second flow control valve, 5, the second flow control valves 5 through pipeline and connects second threeway, 6, the second threeways 6 through pipeline and connect water source 8, centrifugal water pump 1 inlet respectively through pipeline.Be connected first safety check 7 through pipeline between second threeway 6 and the water source 8, can prevent that the water in the centrifugal water pump from flowing back to water source 8.The first flow modulating valve 3 and second flow control valve 5 can be regulated the flow that returns the centrifugal water pump inlet, thereby realize flow and pressure control to output.
Claims (2)
1. a return flow type centrifugal water pump flow regulator is characterized in that, main line comprises water source, centrifugal water pump, first flow modulating valve and second safety check; Return-flow structure comprises first threeway, second flow control valve and second threeway; The centrifugal water delivery side of pump connects first threeway through pipeline, and first threeway connects the first flow modulating valve through pipeline, and the first flow modulating valve connects second safety check through pipeline; First threeway connects second flow control valve through pipeline, and second flow control valve connects second threeway through pipeline, and second threeway connects water source, centrifugal water pump inlet respectively through pipeline; Regulate the first flow modulating valve and second flow control valve, can regulate the flow that returns the centrifugal water pump inlet, and then control is via the flow and the pressure of flow control valve output.
2. a kind of return flow type centrifugal water pump flow regulator according to claim 1 is characterized in that, is connected first safety check through pipeline between second threeway and the water source, can prevent that the water in the centrifugal water pump from flowing back to the water source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220031995 CN202510380U (en) | 2012-02-02 | 2012-02-02 | Flow regulating device of reflux type centrifugal water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220031995 CN202510380U (en) | 2012-02-02 | 2012-02-02 | Flow regulating device of reflux type centrifugal water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510380U true CN202510380U (en) | 2012-10-31 |
Family
ID=47062870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220031995 Expired - Fee Related CN202510380U (en) | 2012-02-02 | 2012-02-02 | Flow regulating device of reflux type centrifugal water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510380U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536847A (en) * | 2012-02-02 | 2012-07-04 | 辽宁工业大学 | Flow regulating device for backflow type centrifugal water pump |
| CN103075352A (en) * | 2013-02-05 | 2013-05-01 | 王耀洲 | Regulating device and regulating method for widening use range of pump |
| CN105715562A (en) * | 2014-12-18 | 2016-06-29 | 苏尔寿管理有限公司 | Operating method for a pump, in particular for a multiphase pump, and pump |
-
2012
- 2012-02-02 CN CN 201220031995 patent/CN202510380U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536847A (en) * | 2012-02-02 | 2012-07-04 | 辽宁工业大学 | Flow regulating device for backflow type centrifugal water pump |
| CN103075352A (en) * | 2013-02-05 | 2013-05-01 | 王耀洲 | Regulating device and regulating method for widening use range of pump |
| CN105715562A (en) * | 2014-12-18 | 2016-06-29 | 苏尔寿管理有限公司 | Operating method for a pump, in particular for a multiphase pump, and pump |
| CN105715562B (en) * | 2014-12-18 | 2019-07-26 | 苏尔寿管理有限公司 | For pumping, the especially operating method of multiphase pump, and pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102536847A (en) | Flow regulating device for backflow type centrifugal water pump | |
| CN109026801B (en) | Single-shaft centrifugal compressor unit and low-energy-consumption operation method | |
| CN202510380U (en) | Flow regulating device of reflux type centrifugal water pump | |
| CN202356462U (en) | Hydraulic control loop of straightener | |
| CN204003688U (en) | Pneumatic control hydraulic system | |
| CN204677522U (en) | A kind of confession pressing system of fluid motor-driven oil sources | |
| CN205012403U (en) | Water supply system with pressure release reflux unit | |
| CN101380807B (en) | Multi-linkage pump energy-saving dynamic system of hollow molding machine | |
| CN210196160U (en) | Hydraulic system and engineering machinery based on negative flow control | |
| CN203822732U (en) | Pilot oil source control block | |
| CN201650893U (en) | High-speed hydraulic system | |
| CN204284031U (en) | A kind of corrugating machine gas-liquid is pressurizeed pressure-keeping mechanism | |
| CN204326167U (en) | With the non-negative pressure water-supply installation of fluidic device | |
| CN104950933B (en) | Stabilizer for system steam pressure | |
| CN204343395U (en) | Bicavate constant pressure water supply equipment | |
| CN212616667U (en) | Micro-power consumption remote control pressure reducing valve based on pipe network dynamic balance | |
| CN204385816U (en) | The integrated energy-efficient non-negative pressure water-supply installation of a kind of multi partition | |
| CN210422915U (en) | Water feeding pump system with variable-speed front pump | |
| CN204459310U (en) | Novel noise eliminating check valve | |
| CN202370046U (en) | Pressure water supply system | |
| CN204026151U (en) | A kind of pressure swing type rushes backwash water system | |
| CN203516842U (en) | Large-flow hydraulic control type duplex reversing slide valve suitable for energy storage workover rig | |
| CN214464453U (en) | Multi-branch multi-valve adjustable multi-section diffusion hot press device | |
| CN203625949U (en) | Novel energy-saving pilot control system | |
| CN202431478U (en) | Exhausted air back-flowing device of compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20121031 Termination date: 20130202 |