CN203286282U - Water pump drainage system of long drainage pipeline - Google Patents
Water pump drainage system of long drainage pipeline Download PDFInfo
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- CN203286282U CN203286282U CN2013202913087U CN201320291308U CN203286282U CN 203286282 U CN203286282 U CN 203286282U CN 2013202913087 U CN2013202913087 U CN 2013202913087U CN 201320291308 U CN201320291308 U CN 201320291308U CN 203286282 U CN203286282 U CN 203286282U
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- water pump
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- main sewer
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Abstract
The utility model discloses a water pump drainage system of a long drainage pipeline. The water pump drainage system comprises water-collecting wells, water draining pumps, water pump outlet non-return valves, isolating valves and an upstream water pond, wherein a plurality of groups of water pump systems composed of the water-collecting wells, the water draining pumps, the water pump outlet non-return valves and the isolating valves sequentially are connected to a water pump main sewer in parallel, and the water pump main sewer is connected with the upstream water pond. The water pump drainage system is characterized in that a safety release branch pipeline is additionally arranged between an outlet of the water pump main sewer and the upstream water pond, and is composed of the isolating valves and safety release valves, which are connected in series. When the water draining pumps stop operation, a hydraulic control loop on the safety release valves controls the opening and closing of the safety release valves by sensing pressure rise in the water pump main sewer in advance. According to the utility model, water hammer pressure in a long drainage pipeline system is reduced, by selecting the safety release branch pipeline with proper diameter and configuring the corresponding safety release valves, the water hammer pressure in the pipeline is reduced, the damage of the water hammer pressure to equipment is avoided, and the running safety of the system is guaranteed.
Description
Technical field
The utility model relates to the water pump drainage system, specifically, is a kind of water pump drainage system of long discharge pipe line.
Background technique
In construction of hydropower facilities, the water pump drainage system generally is divided into seepage of dam drainage system, seepage from powerhouse drainage system etc., if the water pump drainage system is moving because the water hammer pressure in pipeline causes damage of facilities, pipe breakage, will cause drainage system work to interrupt, water level in dam or factory building rises, and jeopardizes the security of operation of dam safety and in-plant equipment.
Domestic hydropower industry had occurred to have brought great property loss because breaking of factory building inner water drainage system pipeline caused the major accident of water logging factory building to country.
As shown in Figure 1, in the domestic water power plant construction, the water pump drainage system comprises sump 1, draining pump 2, exit of pump safety check, separating valve and pond, the water pump system that many groups are comprised of sump 1, draining pump 2, exit of pump safety check 3, separating valve 4 successively is connected in parallel on water pump main sewer 5, and water pump main sewer 5 is connected with pond, upstream 6.Water pump Water drainage system design for long discharge pipe line, when water pump is out of service, due to back water hammer pressure intrinsic in long discharge pipe line, will cause the water pressure at exit of pump safety check 3 positions sharply to rise, if valve and pipeline system design pressure are inconsiderate, can cause valve to damage and pipe breakage, the ponding in discharge pipe line or pond, upstream 6 can blow back into factory building, jeopardizes factory building and operations staff's safety.
In existing design proposal, with the check valve design of exit of pump, be generally buffer valve, during the water pump termination of pumping, valve is slow to close, and back water hammer pressure can pass through safety check like this, reduces the front pressure of valve.According to the engineering practical experience, due to buffer valve Field adjustment difficulty, the long shut-in time can be caused aqueous reflux, cause the water pump counter-rotating, cause water pump to damage, the too short shut-in time can not effectively be reduced back water hammer pressure, so the malicious event that back water hammer pressure causes can often occur.
In order to guarantee water pump drainage system safety, due to the impact that can't estimate back water hammer pressure and cause, the general method that improves system design temperature that adopts of existing design, the bearing capacity that namely improves valve and pipeline can guarantee, but due to the existence of back water hammer pressure, the fatigue ruption of valve is another hidden danger of security of system.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of water hammer pressure that reduces in pipeline, the destruction of prevention water hammer pressure to equipment, the water pump drainage system of the long discharge pipe line of the security of operation of assurance system.
in order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of water pump drainage system of long discharge pipe line, comprise sump, draining pump, the exit of pump safety check, separating valve and pond, upstream, organize successively by sump more, draining pump, the exit of pump safety check, the water pump system that separating valve forms is connected in parallel on the water pump main sewer, the water pump main sewer is connected with the pond, upstream, set up a safety relief bye-pass between the outlet of water pump main sewer and pond, upstream, described safety relief bye-pass is the bleed-off circuit that is composed in series by separating valve and relief valve, when draining pump is out of service, hydraulic control valve on relief valve raises to control the unlatching of relief valve by the pressure in perception water pump main sewer in advance.
The beneficial effects of the utility model are: solve the water hammer pressure in drainage system, by release bye-pass and configure corresponding relief valve of the installation of selecting suitable diameter, reach the water hammer pressure that reduces in pipeline, the destruction of prevention water hammer pressure to equipment, the security of operation of assurance system.
Description of drawings
Fig. 1 is the structural representation of water pump drainage system of the long discharge pipe line of prior art.
Fig. 2 is the structural representation of the water pump drainage system of long discharge pipe line of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
The working principle of the water pump drainage system of long discharge pipe line of the present utility model is identical with prior art, can be with reference to prior art, so no longer narration, the difference of the utility model and prior art is to set up a safety relief bye-pass between the outlet of water pump main sewer and pond, upstream, below is described in detail:
As shown in Figure 2, the water pump drainage system of long discharge pipe line of the present utility model, comprise sump 1, draining pump 2, exit of pump safety check 3, separating valve 4 and pond, upstream 6, organize successively by being connected in parallel on water pump main sewer 5 that sump 1, draining pump 2, exit of pump safety check 3, separating valve 4 form more, water pump main sewer 5 is connected with pond, upstream 6, set up a safety relief bye-pass between 5 outlets of water pump main sewer and pond, upstream 6, described safety relief bye-pass is the waterpower control loop that is composed in series successively by separating valve 14 and relief valve 13.When draining pump 2 was out of service, the hydraulic control valve 12 on relief valve 13 raise to control the unlatching of relief valve 13 by the pressure in perception water pump main sewer in advance.Back water hammer pressure will be released by the safety relief bye-pass, thereby reach the anti-pressure of hammering into shape of effective reduction, improve the Security of system equipment.After the pressure in main sewer 5 dropped to below setting valve, the relief valve control loop resetted, and relief valve is closed again.
The waterpower control valve of relief valve 13 is connected with main sewer, make it to respond to the main sewer water pressure, when total pipe pressure surpasses setting valve (by the adjusting bolt adjustment), water pressure overcomes spring stress, diaphragm rises, water in the relief valve epicoele is discharged, and upper cavity pressure descends, and relief valve is opened.After water pressure dropped to below setting valve, the relief valve control loop resetted, and relief valve is closed again.
Set up safety relief bye-pass and relief valve in drainage system after, can effectively reduce the back water hammer pressure in discharge pipe line, guarantee the security of operation of discharge pipe line and safety check, the safety reliability of raising system operation.
Above-described embodiment only is used for illustrating technological thought of the present utility model and characteristics, its purpose is to make those skilled in the art can understand content of the present utility model and implement according to this, can not only with the present embodiment, limit the scope of the claims of the present utility model, be equal variation or the modification that spirit that all the utility model disclose is done, still drop in the scope of the claims of the present utility model.
Claims (1)
1. the water pump drainage system of a long discharge pipe line, comprise sump, draining pump, the exit of pump safety check, separating valve and pond, upstream, organize successively by sump (1) more, draining pump (2), exit of pump safety check (3), the water pump system that separating valve (4) forms is connected in parallel on water pump main sewer (5), water pump main sewer (5) is connected with pond, upstream (6), it is characterized in that, set up a safety relief bye-pass between water pump main sewer (5) outlet and pond, upstream (6), described safety relief bye-pass is the bleed-off circuit that is composed in series by separating valve (14) and relief valve (13), when draining pump (2) is out of service, hydraulic control valve (12) on relief valve (13) raises to control the unlatching of relief valve (13) by the pressure in perception water pump main sewer (5) in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202913087U CN203286282U (en) | 2013-05-24 | 2013-05-24 | Water pump drainage system of long drainage pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202913087U CN203286282U (en) | 2013-05-24 | 2013-05-24 | Water pump drainage system of long drainage pipeline |
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| Publication Number | Publication Date |
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| CN203286282U true CN203286282U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013202913087U Expired - Fee Related CN203286282U (en) | 2013-05-24 | 2013-05-24 | Water pump drainage system of long drainage pipeline |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019364A (en) * | 2014-06-12 | 2014-09-03 | 云南大红山管道有限公司 | High-altitude high-lift high-pressure long-distance water pipe pressure relieving device and method |
| CN105317616A (en) * | 2015-11-10 | 2016-02-10 | 西华大学 | Sewerage system for maintenance of through-flow turbine |
| CN106638788A (en) * | 2017-01-20 | 2017-05-10 | 云南大红山管道有限公司 | Long-distance high-lift large-caliber pipeline water conveyance system with water hammer eliminating function |
| CN109885013A (en) * | 2019-03-31 | 2019-06-14 | 赵玉丹 | Pumping station system method of controlling security, device and pumping station system for hydraulic engineering |
| CN110208101A (en) * | 2019-06-12 | 2019-09-06 | 海洋石油工程股份有限公司 | A kind of key equipment applied to deep-sea oil gas pipeline pre-debug operation |
-
2013
- 2013-05-24 CN CN2013202913087U patent/CN203286282U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019364A (en) * | 2014-06-12 | 2014-09-03 | 云南大红山管道有限公司 | High-altitude high-lift high-pressure long-distance water pipe pressure relieving device and method |
| CN104019364B (en) * | 2014-06-12 | 2016-08-24 | 云南大红山管道有限公司 | High aititude high-lift high pressure Long-distance Pipeline for Water Conveyance pressure relief device and pressure releasing method |
| CN105317616A (en) * | 2015-11-10 | 2016-02-10 | 西华大学 | Sewerage system for maintenance of through-flow turbine |
| CN106638788A (en) * | 2017-01-20 | 2017-05-10 | 云南大红山管道有限公司 | Long-distance high-lift large-caliber pipeline water conveyance system with water hammer eliminating function |
| CN109885013A (en) * | 2019-03-31 | 2019-06-14 | 赵玉丹 | Pumping station system method of controlling security, device and pumping station system for hydraulic engineering |
| CN109885013B (en) * | 2019-03-31 | 2021-12-14 | 赵玉丹 | Pump station system safety control method and device for hydraulic engineering and pump station system |
| CN110208101A (en) * | 2019-06-12 | 2019-09-06 | 海洋石油工程股份有限公司 | A kind of key equipment applied to deep-sea oil gas pipeline pre-debug operation |
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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: 20131113 |