CN103388587A - Method for eliminating pressure difference of pump line of water injection system by magnetic coupler - Google Patents
Method for eliminating pressure difference of pump line of water injection system by magnetic coupler Download PDFInfo
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- CN103388587A CN103388587A CN2012101567388A CN201210156738A CN103388587A CN 103388587 A CN103388587 A CN 103388587A CN 2012101567388 A CN2012101567388 A CN 2012101567388A CN 201210156738 A CN201210156738 A CN 201210156738A CN 103388587 A CN103388587 A CN 103388587A
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- mounted pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000002347 injection Methods 0.000 title claims abstract description 16
- 239000007924 injection Substances 0.000 title claims abstract description 16
- 230000008878 coupling Effects 0.000 claims description 39
- 238000010168 coupling process Methods 0.000 claims description 39
- 238000005859 coupling reaction Methods 0.000 claims description 39
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The invention relates to a method for eliminating pressure difference of a pump line of a water injection system by a magnetic coupler, wherein a forepump, a follow-up forepump and a main pump are centrifugal pumps which are connected in series in operation, and water is supplied to a water distributing pipeline from a water outlet of the main pump. The system is characterized in that the forepump is regulated in speed by the magnetic coupler; and in the operational process of the main pump, the forepump and the follow-up forepump can be separated from the main pump or are connected in series with the main pump in operation according to the demand of pressure of the water distributing pipeline.
Description
Technical field
The present invention relates to a kind of method of utilizing magnetic coupling to eliminate pressure difference of pump tube in water injection system.
Background technique
Be " a kind of method of eliminating pressure difference of pump tube in water injection system " patent (patent No. 00110026.2) and " method of pressure difference of pump tube is eliminated in a kind of high adaptation " patent (patent No. 200910072367.3) with the maximally related technology of the present invention.These two patents are mainly by front-mounted pump and main pump series connection, and front-mounted pump is carried out the low-voltage variable frequency speed governing, make the delivery pressure of main pump and the pressure coupling that water distribution pipeline needs, and eliminate pressure difference of pump tube, and energy-saving effect is remarkable.But the maintenance of frequency conversion speed-adjusting system is large,, because this maintenance work needs higher level professional technology, often occurs because of the maintenance work problem by the phenomenon of forced-stopping machine again.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of method of utilizing magnetic coupling to eliminate pressure difference of pump tube in water injection system, and service procedure is simple, can effectively eliminate pressure difference of pump tube.
Based on same inventive concept, the present invention has two independently technological schemes:
1, a kind of method of utilizing magnetic coupling to eliminate pressure difference of pump tube in water injection system, front-mounted pump, servo-actuated front-mounted pump and main pump are centrifugal pump and series operation, supplied water to water distribution pipeline by the main pump water outlet, it is characterized in that: by magnetic coupling, front-mounted pump is carried out speed governing; In the process of main pump operation, according to the pressure needs of water distribution pipeline, front-mounted pump, servo-actuated front-mounted pump can break away from or recover the series operation relation with main pump.
When the required pressure of water distribution pipeline was higher, front-mounted pump, servo-actuated front-mounted pump, main pump were in the state of three's series operation, and to the front-mounted pump speed governing, main pump and servo-actuated front-mounted pump are respectively with rated speed with determine rotating speed and move by magnetic coupling.
When the required pressure of water distribution pipeline was low, servo-actuated front-mounted pump is out of service and make itself and main pump disengaging series operation relation, and only front-mounted pump and main pump were in the series operation state, and to the front-mounted pump speed governing, main pump moves with rated speed by magnetic coupling.
When the required pressure of water distribution pipeline further reduces, while causing the front-mounted pump operation point to exceed for a long time its efficient district, front-mounted pump is out of service and make itself and main pump disengaging series operation relation, and only main pump is in running state, and main pump moves with rated speed;
Pressure needs according to water distribution pipeline, realize three kinds of switchings between running state, it is the i.e. i.e. main pump running state only of front-mounted pump and main pump series operation state, the 3rd running state only of front-mounted pump, servo-actuated front-mounted pump, main pump three series operation state, the second running state that aforementioned three kinds of running statees are respectively the first running state.
Front-mounted pump and servo-actuated front-mounted pump can be driven by magnetic coupling by main pump motor, also can be driven by magnetic coupling by other motor, and the relative position of front-mounted pump, servo-actuated front-mounted pump and main pump was determined by on-the-spot the needs.
2, a kind of method of utilizing magnetic coupling to eliminate pressure difference of pump tube in water injection system, front-mounted pump, main pump series operation, supplied water to water distribution pipeline by the main pump water outlet, it is characterized in that: can carry out speed governing to front-mounted pump by magnetic coupling; In the process of main pump operation, according to the pressure needs of water distribution pipeline, front-mounted pump can break away from or recover the series operation relation with main pump.
The beneficial effect that the present invention has:
The present invention carries out speed governing by magnetic coupling to front-mounted pump, both can significantly expand the accommodation of main pump delivery pressure, can significantly subtract the reduced-maintenance workload again, simultaneously, and rate in the time of can also obviously improving operation.According to the pressure needs of water distribution pipeline, front-mounted pump, servo-actuated front-mounted pump can break away from the main pump of operation or recover the series operation relation, have better energy-saving effect.Front-mounted pump and servo-actuated front-mounted pump can be driven by magnetic coupling by main pump motor, needn't be front-mounted pump and the ad hoc drive motor of servo-actuated front-mounted pump, effective Cost reduction, and saving equipment takes up an area space.
Description of drawings
Fig. 1 is the fundamental diagram of the embodiment of the present invention one;
Fig. 2 is the fundamental diagram of the embodiment of the present invention two.
Embodiment
Embodiment one:
As shown in Figure 1, the operation that is in series of front-mounted pump 1, main pump (claiming again water injection pump) 3, servo-actuated front-mounted pump 2, the three is centrifugal pump, by main pump 3 water outlets, to water distribution pipeline 9, is supplied water.Front-mounted pump 1, main pump 3 and servo-actuated front-mounted pump 2 drive by main pump motor 4, and wherein front-mounted pump 1 is driven by magnetic coupling 6 by main pump motor 4, and servo-actuated front-mounted pump 2 is driven by magnetic coupling 5 by main pump motor 4.In the process of main pump operation, pressure needs according to water distribution pipeline, carry out speed governing by 6 pairs of front-mounted pumps of magnetic coupling, also can be according to the pressure needs of water distribution pipeline, with front-mounted pump or (with) servo-actuated front-mounted pump and operating main pump break away from or recover the series operation relation.Main pump 2 is multistage pump (generally being not less than 10 grades), and front-mounted pump 1 and servo-actuated front-mounted pump 2 are generally single-stage pump, and lift generally is not more than a level section lift of main pump.
When the required pressure of water distribution pipeline was higher, front-mounted pump 1, servo-actuated front-mounted pump 2, main pump 3 were in three's series operation state, and namely front-mounted pump 1 sucks the water of water supply tank 8,, through servo-actuated front-mounted pump 2, exports water distribution pipeline 9 to by main pump 3 finally.Be connected across front-mounted pump 1 between importing and exporting check valve 7 and be connected across the check valve 10 of servo-actuated front-mounted pump 2 between importing and exporting and all be under check pressure reduction and automatically close.Main pump 3 and servo-actuated front-mounted pump 2, respectively with rated speed with determine rotating speed operation, carry out speed governing with 6 pairs of front-mounted pumps of magnetic coupling 1, the adjusting of realization to main pump 3 delivery pressures, thus mate with the required pressure of water distribution pipeline 9.
When the required pressure of water distribution pipeline is low, cause the operational efficiency of front-mounted pump 1 under this speed governing state obviously to descend, be that front-mounted pump 1 makes its operation point break away from for a long time its efficient district because rotating speed is too low, separate magnetic coupling (magnetic coupling) 5, servo-actuated front-mounted pump 2 is stopped transport; This moment, being connected across the check valve 10 of servo-actuated front-mounted pump 2 between importing and exporting is under starting differential pressure and automatically opens immediately, make the servo-actuated front-mounted pump 2 of stoppage in transit break away from the series operation relation, only front-mounted pump 1 is in the series operation state with main pump 3, be that front-mounted pump 1 sucks the water of water supply tank 8, feed water to main pump 3 entrances, export water distribution pipeline 9 to by main pump 3 outlets finally.Main pump 3, with the rated speed running, carries out speed governing with 6 pairs of front-mounted pumps of magnetic coupling 1, realizes the adjusting to main pump 3 delivery pressures, thereby with the required pressure of water distribution pipeline 9, mates.
When the required pressure of water distribution pipeline further descends, cause the operational efficiency of front-mounted pump 1 under this speed governing state obviously to descend, namely front-mounted pump 1 makes its operation point break away from for a long time its efficient district because rotating speed is too low, separates magnetic coupling 6 front-mounted pump 1 is stopped transport; This moment, being connected across front-mounted pump 1 check valve 7 between importing and exporting is under starting differential pressure and automatically opens immediately, make the front-mounted pump 1 of stoppage in transit break away from the series operation relation, form the operational process of main pump 3 with the rated speed isolated operation, be that main pump 3 entrances suck the water of water supply tank 8, by main pump 3 outlets, export water distribution pipeline 9 to.
Pressure needs according to water distribution pipeline, realize three kinds of switchings between running state, it is the i.e. i.e. main pump running state only of front-mounted pump and main pump series operation state, the 3rd running state only of front-mounted pump, servo-actuated front-mounted pump, main pump three series operation state, the second running state that aforementioned three kinds of running statees are respectively the first running state.
Embodiment two:
As shown in Figure 2, when the required pressure of water distribution pipeline 9 changes always in less scope, do not establish servo-actuated front-mounted pump, only with front-mounted pump 1, main pump 3, both form the flow process of series operation, be that front-mounted pump 1 sucks the water of water supply tank 8, feed water to main pump 3 entrances, export water distribution pipeline 9 to by main pump 3 outlets finally.Main pump 3, with the rated speed running, carries out speed governing with 6 pairs of front-mounted pumps of magnetic coupling 1, realizes the adjusting to main pump 3 delivery pressures, thereby with the required pressure of water distribution pipeline 9, mates.
, according to the pressure needs of water distribution pipeline, can open at any time, stop front-mounted pump in the process of main pump operation.When the clutch function with magnetic coupling 6 started front-mounted pump 1, check valve 7 can be closed immediately automatically, formed the flow process of front-mounted pump 1 and main pump 3 series operations; When the clutch function stoppage in transit front-mounted pump 1 with magnetic coupling 6, check valve 7 is opened immediately automatically, forms the operational process of main pump isolated operation, and namely main pump 3 entrances suck the water of water supply tank 8, by main pump 3 outlets, exports water distribution pipeline 9 to.
The magnetic coupling that adopts in the embodiment of the present invention is the eddy-current permanent magnetic magnetic coupling, but the present invention does not get rid of and can use the power transmission mechanism that has same or similar transmission of power effect with it.
Claims (7)
1. method of utilizing magnetic coupling to eliminate pressure difference of pump tube in water injection system, front-mounted pump, servo-actuated front-mounted pump and main pump are centrifugal pump and series operation, supplied water to water distribution pipeline by the main pump water outlet, it is characterized in that: by magnetic coupling, front-mounted pump is carried out speed governing; According to the pressure needs of water distribution pipeline, front-mounted pump, servo-actuated front-mounted pump can break away from or recover the series operation relation with the main pump of operation.
2. the method for eliminating pressure difference of pump tube in water injection system with magnetic coupling according to claim 1, it is characterized in that: when the required pressure of water distribution pipeline is higher, front-mounted pump, servo-actuated front-mounted pump, main pump are in the state of three's series operation, to the front-mounted pump speed governing, main pump and servo-actuated front-mounted pump are respectively with rated speed with determine rotating speed and move by magnetic coupling.
3. the method for utilizing magnetic coupling to eliminate pressure difference of pump tube in water injection system according to claim 2, it is characterized in that: when the required pressure of water distribution pipeline is low, servo-actuated front-mounted pump is out of service and make itself and main pump break away from the series operation relation, only front-mounted pump and main pump are in the series operation state, to the front-mounted pump speed governing, main pump moves with rated speed by magnetic coupling.
4. the method for utilizing magnetic coupling to eliminate pressure difference of pump tube in water injection system according to claim 3, it is characterized in that: when the required pressure of water distribution pipeline further reduces, while causing the front-mounted pump operation point to exceed for a long time its efficient district, front-mounted pump is out of service and make itself and main pump break away from the series operation relation, only main pump is in running state, and main pump moves with rated speed.
5. the method for utilizing magnetic coupling to eliminate pressure difference of pump tube in water injection system according to claim 4, it is characterized in that: according to the pressure needs of water distribution pipeline, realize three kinds of switchings between running state, it is the i.e. i.e. main pump running state only of front-mounted pump and main pump series operation state, the 3rd running state only of front-mounted pump, servo-actuated front-mounted pump, main pump three series operation state, the second running state that aforementioned three kinds of running statees are respectively the first running state.
6. according to claim 1-5 any one described method of utilizing magnetic coupling to eliminate pressure difference of pump tube in water injection system, it is characterized in that: front-mounted pump and servo-actuated front-mounted pump can be driven by magnetic coupling by main pump motor.
7. method of utilizing magnetic coupling to eliminate pressure difference of pump tube in water injection system, front-mounted pump, main pump series operation, supplied water to water distribution pipeline by the main pump water outlet, it is characterized in that: by magnetic coupling, front-mounted pump is carried out speed governing; According to the pressure needs of water distribution pipeline, front-mounted pump can break away from or recover the series operation relation with the main pump of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210156738.8A CN103388587B (en) | 2012-05-08 | 2012-05-08 | The method that pressure difference of pump tube in water injection system is eliminated using magnetic coupling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210156738.8A CN103388587B (en) | 2012-05-08 | 2012-05-08 | The method that pressure difference of pump tube in water injection system is eliminated using magnetic coupling |
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| CN103388587A true CN103388587A (en) | 2013-11-13 |
| CN103388587B CN103388587B (en) | 2017-09-01 |
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| CN201210156738.8A Expired - Fee Related CN103388587B (en) | 2012-05-08 | 2012-05-08 | The method that pressure difference of pump tube in water injection system is eliminated using magnetic coupling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946671A (en) * | 2020-08-20 | 2020-11-17 | 福建蓝海节能科技有限公司 | Method for effectively preventing cavitation of water pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378124A (en) * | 1993-06-07 | 1995-01-03 | Maytag Corporation | Method and means for assembling a pump and motor |
| DE10331578A1 (en) * | 2003-07-11 | 2005-02-03 | Spechtenhauser Pumpen Gmbh | Waste water pump system comprises several pump units which are connected in series, incorporate identical threephase motors, and operate at specified relative power levels |
| CN101922456A (en) * | 2010-04-16 | 2010-12-22 | 江苏大学 | Magnetic-gear high temperature-resistant high-speed magnetic pump |
| CN101929479A (en) * | 2009-06-24 | 2010-12-29 | 边疆 | Method for removing pump pipe differential pressure with high adaptivity |
| CN201860245U (en) * | 2010-03-09 | 2011-06-08 | 王荣松 | Cylindrical rotary table permanent magnet speed governor |
-
2012
- 2012-05-08 CN CN201210156738.8A patent/CN103388587B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378124A (en) * | 1993-06-07 | 1995-01-03 | Maytag Corporation | Method and means for assembling a pump and motor |
| DE10331578A1 (en) * | 2003-07-11 | 2005-02-03 | Spechtenhauser Pumpen Gmbh | Waste water pump system comprises several pump units which are connected in series, incorporate identical threephase motors, and operate at specified relative power levels |
| CN101929479A (en) * | 2009-06-24 | 2010-12-29 | 边疆 | Method for removing pump pipe differential pressure with high adaptivity |
| CN201860245U (en) * | 2010-03-09 | 2011-06-08 | 王荣松 | Cylindrical rotary table permanent magnet speed governor |
| CN101922456A (en) * | 2010-04-16 | 2010-12-22 | 江苏大学 | Magnetic-gear high temperature-resistant high-speed magnetic pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946671A (en) * | 2020-08-20 | 2020-11-17 | 福建蓝海节能科技有限公司 | Method for effectively preventing cavitation of water pump |
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Inventor after: Bian Wei Inventor after: Bian Jiang Inventor after: Bian Wenlu Inventor before: Bian Wenlu Inventor before: Bian Jiang Inventor before: Bian Wei |
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Granted publication date: 20170901 |