CN214698379U - Device for switching water supply of water pump under low water level - Google Patents
Device for switching water supply of water pump under low water level Download PDFInfo
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- CN214698379U CN214698379U CN202022847112.4U CN202022847112U CN214698379U CN 214698379 U CN214698379 U CN 214698379U CN 202022847112 U CN202022847112 U CN 202022847112U CN 214698379 U CN214698379 U CN 214698379U
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Abstract
The utility model provides a device that switching water pump supplied water under low water level, including two deep-well pumps of taking inlet tube and outlet pipe, its characterized in that is equipped with the connecting pipe of two outlet pipes of a intercommunication between two deep-well pump outlet pipes, should be equipped with the main valve door on connecting the pipe, will link the pipe through this main valve and fall into first even pipe and second even pipe to set up corresponding first, the vice valve of second respectively on first even pipe and second are even managed. Before the water pump that will work is switched to not moving the water pump as required, earlier through the connecting pipe with the water pump outlet pipe that does not move the water pump in the fractional water shunt of work water pump outlet pipe to the outlet pipe of not moving the water pump, and then behind the air discharge in the water pump that will not move and formation negative pressure, can switch to not moving the water pump work, accomplish the start-up of not moving the water pump smoothly, simple structure not only saves time, laborsaving, moreover quick, convenient, provide sufficient cooling water for the normal operating of transformer.
Description
Technical Field
The utility model relates to a water supply installation, especially a device that switching water pump supplied water under low water level belongs to hydroelectric set water supply equipment technical field.
Background
When the transformer works, cooling water is required to be supplied to the transformer, and heat generated by the transformer is removed through the cooling water so as to maintain the normal operation of the transformer. For guaranteeing the normal operating of transformer in the power plant, all be equipped with two water pumps usually and supply water to a transformer automatic switch-over, the water pump of power plant adopts the deep-well pump of high-lift mostly, the point of intaking is all downstream, when water pump automatic switch-over time is in the electricity generation valley period (like night), the low reaches water level this moment is lower, so when switching over to the water pump water supply that does not operate, because there is not water in the water pump water supply pipe, can't discharge the air in the water pump and form the negative pressure when starting this water pump, cause the water pump can't accomplish automatic start, can only carry out manual start at the downstream through the people, not only waste time, hard, and can also bring the unusual risk of transformer cooling when not switching over in time. There is therefore a need for improvements in the prior art.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a device that switching water pump supplied water under low water level.
The utility model discloses a following technical scheme realizes: a device for switching water supply of a water pump under low water level comprises two deep well pumps with water inlet pipes and water outlet pipes, and is characterized in that a connecting pipe communicated with the two water outlet pipes is arranged between the water outlet pipes of the two deep well pumps, a main valve is arranged on the connecting pipe, the connecting pipe is divided into a first connecting pipe and a second connecting pipe through the main valve, corresponding first and second auxiliary valves are respectively arranged on the first connecting pipe and the second connecting pipe, so that a small part of water in the water outlet pipe of the working water pump is firstly distributed into the water outlet pipe of the water pump which is not in operation through the connecting pipe before the working water pump is switched to the water pump which is not in operation, and then air in the water pump which is not in operation is discharged to form negative pressure, the water pump which is not in operation can be switched to work, and the starting of the water pump which is not in operation is smoothly completed.
The main valve is a conventional electric ball valve, and the electric ball valve is connected with a controller through a lead to realize the automatic control of the electric ball valve.
And when the electric ball valve fails, water can be supplemented to the water pump which is not operated through the manual valve.
The utility model has the advantages of it is following and effect: adopt above-mentioned scheme, can conveniently switch the working water pump to before not operating the water pump, earlier through the connecting pipe with the water pump outlet pipe of working water little partial water shunt to not operating the outlet pipe of water pump, and then with not operating the air discharge in the water pump and form the negative pressure after, can switch to not operating the water pump work, accomplish the start-up of not operating the water pump smoothly, simple structure not only saves time, laborsaving, and is quick, convenient moreover, provide sufficient cooling water for the normal operating of transformer.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the deep well pump of fig. 1.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The utility model provides a device for switching water pump to supply water under low water level, including two deep-well pumps A, B of taking inlet pipe and outlet pipe, be equipped with a connecting pipe that communicates two outlet pipes 1, 5 between two deep-well pumps A, B outlet pipes 1, 5, be equipped with main valve 4 on this connecting pipe, divide into first connecting pipe 3 and second connecting pipe 6 through this main valve 4 with the connecting pipe, and set up corresponding first pair of valve 2, the vice valve 7 of second on first connecting pipe 3 and second connecting pipe 6 respectively; the main valve 4 is a conventional electric ball valve, and the electric ball valve is connected with the controller 8 through a lead to realize the automatic control of the electric ball valve; the first auxiliary valve 2 and the second auxiliary valve 7 are manual valves and are used as auxiliary standby valves of the electric ball valve, and when the electric ball valve fails, water can be supplemented to the water pump which is not operated through the manual valves.
When the deep-well pump switching device works, the first auxiliary valve 2 and the second auxiliary valve 7 are opened, before the working deep-well pump A needs to be switched to the non-operating deep-well pump B, the main valve 4 is opened through the controller 8, a small part of water in the water outlet pipe 1 of the working deep-well pump A is distributed to the water outlet pipe 5 of the non-operating deep-well pump B, then air in the non-operating deep-well pump B is discharged and forms negative pressure, then the operation can be switched to the non-operating deep-well pump B, and the starting of the non-operating deep-well pump B is smoothly completed.
Claims (3)
1. The water supply device for switching water pump under low water level includes two deep-well pumps with water inlet pipe and water outlet pipe, and is characterized by that between two deep-well pump water outlet pipes a connecting pipe for connecting two water outlet pipes is set, on said connecting pipe a main valve is set, and said connecting pipe is divided into first connecting pipe and second connecting pipe by means of said main valve, and on the first connecting pipe and second connecting pipe the correspondent first and second auxiliary valves are set respectively.
2. An apparatus for switching over the supply of water from a pump to a pump at low water level as claimed in claim 1, wherein the main valve is a ball valve which is electrically connected to the controller by a wire.
3. The apparatus of claim 1, wherein the first and second sub-valves are manual valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022847112.4U CN214698379U (en) | 2020-12-01 | 2020-12-01 | Device for switching water supply of water pump under low water level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022847112.4U CN214698379U (en) | 2020-12-01 | 2020-12-01 | Device for switching water supply of water pump under low water level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214698379U true CN214698379U (en) | 2021-11-12 |
Family
ID=78556668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022847112.4U Active CN214698379U (en) | 2020-12-01 | 2020-12-01 | Device for switching water supply of water pump under low water level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214698379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108511A (en) * | 2023-10-19 | 2023-11-24 | 烟台龙港泵业股份有限公司 | Self-adaptive centrifugal pressure test pump set and pump system capable of avoiding overpressure |
-
2020
- 2020-12-01 CN CN202022847112.4U patent/CN214698379U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108511A (en) * | 2023-10-19 | 2023-11-24 | 烟台龙港泵业股份有限公司 | Self-adaptive centrifugal pressure test pump set and pump system capable of avoiding overpressure |
| CN117108511B (en) * | 2023-10-19 | 2023-12-22 | 烟台龙港泵业股份有限公司 | Self-adaptive centrifugal pressure test pump set and pump system capable of avoiding overpressure |
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