CN213783079U - Overpressure and overflow preventing recovery device for generator stator cooling water tank - Google Patents
Overpressure and overflow preventing recovery device for generator stator cooling water tank Download PDFInfo
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- CN213783079U CN213783079U CN202022783345.2U CN202022783345U CN213783079U CN 213783079 U CN213783079 U CN 213783079U CN 202022783345 U CN202022783345 U CN 202022783345U CN 213783079 U CN213783079 U CN 213783079U
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- water tank
- overflow
- cooling water
- stator cooling
- water injection
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Abstract
The utility model discloses a recovery unit of superpressure and overflow are prevented to generator stator cooling water tank, its characterized in that: the device comprises an outer sleeve body, an inner sleeve, an overflow pipe, an overflow valve, a water injection pipe, a water injection electromagnetic valve, a stator cooling water tank and a steam feed pump sealing water tank; one end of the inner sleeve is communicated with the top of the stator cooling water tank, and the other end of the inner sleeve is inserted into the bottom of the outer sleeve body; the outer sleeve body is provided with an overflow port and a water injection port; one end of the overflow pipe is connected with an overflow port of the outer sleeve body, and the other end of the overflow pipe is connected with a sealing water tank of the steam feed pump through an overflow valve; the water injection port is connected with the water injection pipe through the water injection electromagnetic valve. The utility model discloses the device has solved the pressure release valve action back influence equipment operation security problem on every side that traditional generator stator cooling water tank set up, has also solved traditional generator stator cooling water tank overflow and has caused the water waste problem.
Description
Technical Field
The utility model relates to a cooling water tank's recovery unit, in particular to generator stator cooling water tank prevents the recovery unit of superpressure and overflow.
Background
The overpressure prevention of the generator stator cooling water tank in the prior art generally adopts a water tank to be connected with a pressure release valve, and the water tank overflows to the atmosphere after being sealed by a U-shaped pipe.
In the prior art, once overpressure of the stator cooling water tank occurs due to water supplement failure of the stator cooling water tank or improper operation of a stator cooling water system, the pressure relief valve of the stator cooling water tank acts to relieve pressure, water is sprayed to the surrounding production environment, and the insulation of electrical equipment in the area is possibly affected; for water tanks provided with a U-shaped sealing overflow pipe, the overflow causes high cost water waste through fine treatment. After the generator stator cooling water tank is over-pressurized, system equipment, particularly a generator stator cooling water pipe is over-pressurized, and weak links of the generator inner stator pipe can be leaked.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a recovery device for preventing overpressure and overflow of a cooling water tank of a generator stator. The utility model discloses the device has solved the pressure release valve action back influence equipment operation security problem on every side that traditional generator stator cooling water tank set up, has also solved traditional generator stator cooling water tank overflow and has caused the water waste problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a recovery device for preventing overpressure and overflow of a generator stator cooling water tank, which comprises an outer sleeve barrel, an inner sleeve, an overflow pipe, an overflow valve, a water injection pipe, a water injection solenoid valve, a stator cooling water tank and a steam-driven water feed pump sealing water tank; one end of the inner sleeve is communicated with the top of the stator cooling water tank, and the other end of the inner sleeve is inserted into the bottom of the outer sleeve body; the outer sleeve body is provided with an overflow port and a water injection port; one end of the overflow pipe is connected with an overflow port of the outer sleeve body, and the other end of the overflow pipe is connected with a sealing water tank of the steam feed pump through an overflow valve; the water injection port is connected with the water injection pipe through the water injection electromagnetic valve.
Further, the inner sleeve is fixed with the outer sleeve body through a four-way welding fixing piece.
And the DCS control system is electrically connected with the water injection electromagnetic valve and the overflow valve, and an outer sleeve high liquid level switch and an outer sleeve low liquid level switch which are electrically connected with the DCS control system are arranged on the outer sleeve body and are used for controlling the switch of the water injection electromagnetic valve.
Furthermore, a pressure sensor is further installed at the top of the inner sleeve and is electrically connected with the DCS control system.
Furthermore, the water injection pipe is connected with the stator cooling water tank through a stator cold water tank water supplement electromagnetic valve.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the overpressure prevention function protection of the generator stator cooling water tank is realized through a simple equipment structure, and the pressure at the top of the water tank is continuously monitored in a DCS (distributed control system) of a centralized control room;
2. the recycling of the working medium after the overflow of the stator cooling water tank is realized, and the working medium of the stator cooling water tank is prevented from leaking outwards to influence the production environment and equipment safety;
3. the reliability of a water injection source is ensured by introducing the outer sleeve to inject water in front of the water replenishing valve of the stator cooling water tank, the problem of damage of a traditional regular manual water injection water seal or a U-shaped pipe water seal is solved, and the water seal function is realized to prevent the water quality of the stator cooling water tank from being influenced by the direct connection between the top of the water tank and the atmosphere or other gas spaces;
4. the hydrogen system of the generator is prevented from leaking to the fixed cooling water system, and hydrogen explosion caused by accumulation of the fixed cooling water system is avoided.
Drawings
FIG. 1 is a view of an overpressure and overflow preventing recovery device for a cooling water tank of a generator stator of the present invention;
in the figure: 1. an outer sleeve body; 2. an inner sleeve; 3. an overflow pipe; 31. an overflow valve; 32. an overflow port; 4. a water injection pipe; 41. a water injection solenoid valve; 42. a water injection port; 5. an outer sleeve high level switch; 6. a low level switch; 7. a pressure sensor; 8. the steam feed pump seals the water tank; 9. welding the fixing piece in four directions; 10. a water replenishing electromagnetic valve of the stator cold water tank; 11. and a stator cooling water tank.
Fig. 2 is a top view structural diagram of the four-way welding fixture of the present invention.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
Example (b):
the utility model provides a generator stator cooling water tank prevents superpressure and overflow recovery unit, refers to figure 1, includes outer sleeve barrel 1, interior sleeve pipe 2, overflow pipe 3, water injection pipe 4, outer sleeve high liquid level switch 5, low liquid level switch 6, pressure sensor 7, steam feed pump seal water tank 8 and stator cooling water tank 11, still includes overflow valve 31, the water injection solenoid valve 41 of setting on water injection pipe 4 of setting on overflow pipe 3.
Referring to fig. 1, one side of the inner sleeve 2 is communicated with the top of the stator cooling water tank 11, and the other side is inserted into the bottom of the outer sleeve body 1; the outer sleeve body 1 is provided with an overflow port 32 and a water injection port 42; one end of the overflow pipe 3 is connected with an overflow port 32 of the outer sleeve body 1, and the other end is connected with a sealing water tank 8 of the steam feed pump through an overflow valve 31; one end of the water injection pipe 4 is connected with a water injection port 42 of the outer sleeve body 1, and the other end is connected with a front water supply pipeline of the stator cooling water tank water supply valve 10 through a water injection electromagnetic valve 41; the inner sleeve 2 is fixed with the outer sleeve body 1 through a four-way welding fixing piece 9, and the four-way welding fixing piece 9 is shown in figure 2; and a pressure sensor 7 is arranged at the top of the inner sleeve 2, and the pressure sensor 7 is electrically connected with a DCS control system, so that the pressure at the top of the water tank is continuously monitored in a DCS of the centralized control room.
The outer sleeve high liquid level switch 5 and the outer sleeve low liquid level switch 6 are electrically connected with a DCS control system, and the DCS control system is electrically connected with the water injection electromagnetic valve 41 and the overflow valve 31 and is used for controlling the on and off of the water injection electromagnetic valve 41.
The stator cooling water tank 11 is provided with a high-low water level sensor for enabling the DCS control system to control the stator cooling water tank water supplementing electromagnetic valve 10 to supplement water.
The implementation principle of the above embodiment is as follows: in case stator cooling water tank 11 should make up water system trouble or stator cooling water system put into operation improper and cause the pressure of the cooling water to rise surely, the gas space pressure in top risees or the water tank is full of water, and gas or liquid get into interior sleeve pipe 2 through stator cooling water tank top UNICOM to through 3 pressure release overflows to the sealed water tank 8 of vapour pump of overflow pipe, realize preventing stator cooling water tank superpressure and retrieve the mesh of overflow working medium.
Wherein, outer sleeve body 1 sets up outer sleeve high liquid level switch 5 and low liquid level switch 6, and the liquid level switch signal is far passed to unit DCS control system, and low liquid level switch 6 signal action interlocking opens water injection solenoid valve 41, and high liquid level switch 5 signal action interlocking closes water injection solenoid valve 41. The outer sleeve body is connected with the water injection valve 10 from the front of the stator cooling water tank water replenishing valve for water injection, so that the water sealing effect of the outer sleeve body is realized, and the influence on the water quality of the stator cooling water tank caused by the fact that gas at the top of the stator cooling water tank 11 directly contacts with the steam-driven water feed pump sealing water tank 8 through the overflow pipe 3 is avoided.
The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology if they do not depart from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a recovery unit of superpressure and overflow are prevented to generator stator cooling water tank which characterized in that: the device comprises an outer sleeve body, an inner sleeve, an overflow pipe, an overflow valve, a water injection pipe, a water injection electromagnetic valve, a stator cooling water tank and a steam feed pump sealing water tank; one end of the inner sleeve is communicated with the top of the stator cooling water tank, and the other end of the inner sleeve is inserted into the bottom of the outer sleeve body; the outer sleeve body is provided with an overflow port and a water injection port; one end of the overflow pipe is connected with an overflow port of the outer sleeve body, and the other end of the overflow pipe is connected with a sealing water tank of the steam feed pump through an overflow valve; the water injection port is connected with the water injection pipe through the water injection electromagnetic valve.
2. The overpressure and overflow resistant recovery device for a generator stator cooling water tank of claim 1, wherein: the inner sleeve is fixed with the outer sleeve body through a four-way welding fixing piece.
3. The overpressure and overflow resistant recovery device for a generator stator cooling water tank of claim 1, wherein: the DCS comprises a water injection electromagnetic valve and an overflow valve, and is characterized by further comprising a DCS control system, wherein the DCS control system is electrically connected with the water injection electromagnetic valve and the overflow valve, and an outer sleeve high liquid level switch and an outer sleeve low liquid level switch which are electrically connected with the DCS control system are arranged on the outer sleeve body and are used for controlling the switch of the water injection electromagnetic valve.
4. The overpressure and overflow resistant recovery device for a generator stator cooling water tank of claim 3, wherein: and the top of the inner sleeve is also provided with a pressure sensor which is electrically connected with the DCS control system.
5. The overpressure and overflow resistant recovery device for a generator stator cooling water tank of claim 1, wherein: the water injection pipe is connected with the stator cooling water tank through a stator cold water tank water supplement electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022783345.2U CN213783079U (en) | 2020-11-26 | 2020-11-26 | Overpressure and overflow preventing recovery device for generator stator cooling water tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022783345.2U CN213783079U (en) | 2020-11-26 | 2020-11-26 | Overpressure and overflow preventing recovery device for generator stator cooling water tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213783079U true CN213783079U (en) | 2021-07-23 |
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ID=76891901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022783345.2U Active CN213783079U (en) | 2020-11-26 | 2020-11-26 | Overpressure and overflow preventing recovery device for generator stator cooling water tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213783079U (en) |
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2020
- 2020-11-26 CN CN202022783345.2U patent/CN213783079U/en active Active
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