CN215364984U - Generator inner cooling water hydrogen pumping and discharging device - Google Patents
Generator inner cooling water hydrogen pumping and discharging device Download PDFInfo
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- CN215364984U CN215364984U CN202121526381.9U CN202121526381U CN215364984U CN 215364984 U CN215364984 U CN 215364984U CN 202121526381 U CN202121526381 U CN 202121526381U CN 215364984 U CN215364984 U CN 215364984U
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Abstract
The utility model relates to a cold water hydrogen pumping device in a generator. The cold water hydrogen drainage device in the generator is provided with a direct gas path and a bypass gas path, when the air pressure in the cooling water tank is normal, a one-way valve of the direct gas path is opened, and gas in the cooling water tank flows to the hydrogen detection device through the direct gas path and is then discharged in time. After the air pressure is lower than the set value in the cooling water tank, the through air passage check valve cannot be opened, the controller connected with the air pump controls the air pump to be started at the moment, the air pump is opened, the air in the cooling water tank flows to the hydrogen detection device through the bypass air passage under the action of the air pump and is timely and outwards discharged, and the through air passage check valve prevents the air pumped out by the air pump from flowing back through the through air passage check valve, so that the air pumping efficiency is improved. Through the effect of the air pump, the gas in the cooling water tank can be discharged in time when the gas is not smoothly discharged, and the technical problem of large hydrogen purity measurement deviation caused by untimely hydrogen discharge in the cooling water tank of the conventional generator is solved.
Description
Technical Field
The utility model relates to a cold water hydrogen pumping device in a generator.
Background
In a large generator cooling system, hydrogen is generally adopted to cool the interior of a motor, the specific gravity of the hydrogen is small, the weight is light, and the hydrogen is small in resistance loss relative to other gases when used for the cooling system. In addition, the hydrogen has strong penetrating power and can permeate into a water cooling system of the generator, for example, the hydrogen enters a water cooling pipeline of a motor stator adopting water cooling or a water cooling pipeline of a hydrogen cooler, so that the content of the hydrogen in the inner cold water tank is increased. Hydrogen is flammable and explosive and has an explosion limit of 4% -74%, so it is necessary to measure the purity of hydrogen in the gas in the internal cooling water tank and release the hydrogen through a pipeline.
Chinese patent No. CN212230085U discloses a generator hydrogen discharge device, which includes a circulation water tank, a hydrogen detector and a hydrogen discharge gas path, wherein cooling water containing hydrogen enters the circulation water tank and is discharged through the hydrogen discharge gas path, and the circulation water tank is a cooling water tank.
Due to the blocking effect of the hydrogen detector, dead corners of the hydrogen discharge pipe, a gas flow meter with low pressure requirement arranged on the hydrogen discharge pipe, the existence of factors such as temperature change of the cooling water tank, water level fluctuation of the cooling water tank and the like, the pressure in the cooling water tank is easy to change, when the pressure is lower, hydrogen is easy to gather in the circulating water tank, the deviation of the purity of the hydrogen measured in real time is larger, and the hydrogen is easy to explode.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a cold water hydrogen pumping and discharging device in a generator, which is used for solving the technical problem of large hydrogen purity measurement deviation caused by untimely hydrogen discharge in a cooling water tank of the conventional generator.
The internal cooling water hydrogen pumping device for the generator adopts the following technical scheme:
the generator inner cooling water hydrogen drainage device includes:
the air inlet joint is used for connecting a hydrogen discharge pipeline of the cooling water tank;
the gas outlet joint is used for being connected to a hydrogen discharge pipeline of the cooling water tank and is positioned at the downstream of the gas inlet joint;
the straight-through gas path is positioned between the gas inlet joint and the gas outlet joint, so that the gas inlet joint is communicated with the gas outlet joint, and a straight-through gas path one-way valve for allowing gas to pass through in a one-way manner is arranged on the straight-through gas path;
the bypass gas path is arranged in parallel with the straight gas path, one end of the bypass gas path is communicated with the gas inlet joint, and the other end of the bypass gas path is communicated with the gas outlet joint;
and the air pump is arranged on the bypass air path and is used for being connected with the controller, and the controller controls the start and can pump out the air in the cooling water tank when the pressure in the cooling water tank is lower than a set value, so that the air enters from the air inlet joint and is discharged from the air outlet joint through the bypass air path.
Has the advantages that: the cold water and hydrogen pumping and discharging device in the generator is provided with the straight-through gas path and the bypass gas path, when the air pressure in the cooling water tank is normal, the check valve of the straight-through gas path can be opened, and the gas in the cooling water tank flows to the hydrogen detection device through the straight-through gas path and is then discharged in time. After the air pressure is lower than the set value in the cooling water tank, the through air passage check valve cannot be opened, the controller connected with the air pump controls the air pump to be started at the moment, the air pump is opened, the air in the cooling water tank flows to the hydrogen detection device through the bypass air passage under the action of the air pump and is timely and outwards discharged, and the through air passage check valve prevents the air pumped out by the air pump from flowing back through the through air passage check valve, so that the air pumping efficiency is improved. Through the effect of the air pump, the gas in the cooling water tank can be discharged in time when the gas is not smoothly discharged, and the technical problem of large hydrogen purity measurement deviation caused by untimely hydrogen discharge in the cooling water tank of the conventional generator is solved.
Furthermore, the generator cold water hydrogen gas drainage device comprises a shell, the air inlet connector and the air outlet connector are both arranged on the shell, and the air pump, the straight-through air path and the bypass air path are all positioned in the shell. The shell can protect air pump and air circuit, and the security is higher.
Furthermore, the shell is provided with a shell explosion-proof filter sheet for the escape of gas in the shell and a gland for compressing the shell explosion-proof filter sheet. The explosion-proof filter disc of the shell is used for gas escape, and the safety of the device is improved.
Furthermore, the air inlet connector and the air outlet connector are respectively provided with an external interface used for external connection, a straight channel interface communicated with the straight channel and a bypass interface connected with the bypass air channel, the air inlet connector and the air outlet connector respectively comprise a connector body and a connector cover detachably fixed on the connector body, the straight channel interface and the bypass interface are respectively arranged on the connector cover, the connector body and the connector cover are enclosed to form a connector buffer cavity, and the external interface, the straight channel interface and the bypass interface are respectively communicated with the connector buffer cavity. The joint cover and the joint body are detachably fixed, so that the joint is convenient to process and maintain.
Furthermore, a joint explosion-proof filter sheet is fixed in the joint body, the joint body is provided with a loading port for loading the joint explosion-proof filter sheet, and the joint cover is fixed at the loading port. The loading port is convenient for installing the joint explosion-proof filter, and the safety of the device can be improved by the joint explosion-proof filter.
Furthermore, the joint body is internally provided with a filter disc pressing ring for pressing the joint explosion-proof filter disc. The filter disc pressing ring enables the explosion-proof filter disc to be fixed firmly.
Further, the joint cover is in threaded connection with the joint body. Simple to operate, simple structure.
Furthermore, the air inlet joint and the air outlet joint are explosion-proof joints, and joint explosion-proof filter sheets are arranged in the explosion-proof joints. The safety of the device can be improved by the joint explosion-proof filter sheet.
Further, the air inlet connector and the air outlet connector both comprise connector bodies, external threaded holes are formed in the connector bodies, the external threaded holes are provided with adapters, the external threaded holes in the air inlet connector and the external threaded holes in the air outlet connector are the same in aperture, and therefore the adapters connected with the two connector bodies can be exchanged. The adapter of two connector bodies can be replaced as required.
Further, the shell is an explosion-proof aluminum shell. The safety factor is high.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the cooling water hydrogen pumping device in the generator of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
in the figure: 1. a housing; 2. an air inlet joint; 3. an air outlet joint; 4. an air pump; 5. a one-way valve of the straight gas passage; 6. an air tube; 7. a voltage regulating circuit board; 8. an explosion-proof connector lug; 9. an air inlet pipe; 10. an air outlet pipe; 11. a fitting body; 12. a joint cover; 13. a joint buffer chamber; 14. an O-shaped ring; 15. an external thread adapter; 16. a movable joint; 17. a joint explosion-proof filter sheet; 18. a gasket; 19. a filter disc is pressed; 20. a gland; 21. the shell is an explosion-proof filter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model relates to a specific embodiment 1 of a cold water hydrogen pumping device in a generator, which comprises the following components:
the generator cold water hydrogen pumping and discharging device is arranged on a hydrogen discharge pipeline connected with a cooling water tank, and the hydrogen discharge pipeline is connected with a gas flow meter for detecting the gas flow in the hydrogen discharge pipeline and a hydrogen detection device for detecting the hydrogen purity in the hydrogen discharge pipeline. In this embodiment, the gas flowmeter is located upstream of the cold water hydrogen pumping device in the generator. In other embodiments, the gas flow meter may be located downstream of the cold water hydrogen extraction device in the generator.
As shown in fig. 1 and 2, the cold water and hydrogen pumping device in the generator comprises a housing 1, an air inlet connector 2 and an air outlet connector 3 are fixed on the housing 1, and a through air passage, a bypass air passage and an air pump are arranged in the housing 1. The straight-through air path is connected with the air inlet connector 2 and the air outlet connector 3, and air flows from the air inlet connector 2 to the air outlet connector 3. The bypass gas circuit is connected with the straight gas circuit in parallel and is also connected with the gas inlet connector 2 and the gas outlet connector 3, one end of the bypass gas circuit is communicated with the gas inlet connector 2, and the other end of the bypass gas circuit is communicated with the gas outlet connector 3. The air pump 4 is arranged on the bypass air path and used for pumping air from the air inlet joint 2 to the air outlet joint 3.
In order to prevent gas from flowing back from the straight gas path when the air pump 4 works, a straight gas path one-way valve 5 is arranged on the straight gas path, and the straight gas path one-way valve 5 is used for enabling gas to flow from the gas inlet connector 2 to the gas outlet connector 3 in a one-way mode through the straight gas path. The ventilation path in this embodiment includes air pipes 6 disposed on both sides of the one-way valve 5 of the straight-through air path, and the air pipes 6 are silica gel hoses.
The cold water hydrogen pumping device in the generator is arranged on a hydrogen discharge pipeline of a cooling water tank, when the pressure in the cooling water tank is higher, gas in the hydrogen discharge pipeline directly opens a straight gas path one-way valve 5 in a straight gas path, and the gas is discharged outwards through the straight gas path and then through a gas outlet connector 3.
When the pressure in the cooling water tank is small and the gas pressure on the hydrogen discharge pipeline is smaller than a set value, the flow meter connected in series in the hydrogen discharge gas pipeline has the lowest pressure requirement, the gas cannot reach the hydrogen detection device through the flow meter and cannot meet the normal working requirement of the hydrogen detection device on the hydrogen discharge pipeline, and at the moment, the gas pump 4 is opened to pump the gas in the cooling water tank out so that the gas enters from the gas inlet connector 2 and is discharged from the gas outlet connector 3 through the bypass gas pipeline.
The generator cold water hydrogen pumping and discharging system comprises a controller, the generator cold water hydrogen pumping and discharging device is connected with the controller, and the start, stop and speed of the air pump 4 are controlled by the controller. The controller is connected with a pressure sensor in the hydrogen discharge gas path, and when the pressure sensor detects that the pressure is lower than a set value, a signal is sent to the controller, and the controller controls the air pump 4 to work.
Of course, in order to improve the exhaust efficiency, the air pump 4 may be activated to exhaust the straight-through air path and the bypass air path simultaneously when the hydrogen concentration in the cooling water tank is high.
In this embodiment, air pump 4 is the diaphragm pump, and the diaphragm pump passes through pressure regulating circuit board 7, explosion-proof connector lug 8 and links to each other with the controller, and the controller controls opening of diaphragm pump and stops and speed.
In this embodiment, the bypass gas path includes a gas inlet pipe 9 and a gas outlet pipe 10, the gas inlet pipe 9 connects the inlet of the gas inlet connector 2 and the inlet of the gas pump 4, and the gas outlet pipe 10 connects the outlet of the gas outlet connector 3 and the outlet of the gas pump 4.
In this embodiment, the air inlet joint 2 and the air outlet joint 3 are both three-way joints. The air inlet connector 2 and the air outlet connector 3 are respectively provided with an external port, a straight channel port communicated with a straight-through air channel and a bypass port connected with a bypass air channel, the air inlet connector 2 and the air outlet connector 3 respectively comprise a connector body 11 and a connector cover 12 detachably fixed on the connector body 11, the straight channel port and the bypass port are respectively arranged on the connector cover 12, the connector body 11 and the connector cover 12 are enclosed to form a connector buffer cavity 13, and the external port, the straight channel port and the bypass port are respectively communicated with the connector buffer cavity 13.
The joint cover 12 is screwed to the joint body 11, and an O-ring 14 for sealing is provided between the joint cover 12 and the joint body 11. The O-ring 14 ensures the tightness of the connection between the joint cover 12 and the housing 1, prevents gas leakage and ensures the safety of the device.
In this embodiment, the connector body 11 is provided with an external threaded hole, and an orifice of the external threaded hole is formed as an external interface. The external threaded holes of the air inlet connector 2 and the air outlet connector 3 are provided with adapters. The external threaded hole on the connector body 11 in the air inlet connector 2 is the same as the external threaded hole on the connector body 11 in the air outlet connector 3 in aperture, so that the adapters connected with the two connector bodies 11 can be interchanged. According to different connector types in the hydrogen exhaust pipeline, a proper adapter can be selected to be matched with the hydrogen exhaust pipeline.
In this embodiment, the adapter on the air outlet joint 3 is an external thread adapter 15, the adapter on the air inlet joint 2 is a movable joint 16, and the movable joint 16 comprises a connecting nut. The adapter adopts the universal joint of inflammable gas flow meter, and the gas tightness is good, and interchangeability is high. Because the adapter can be exchanged, the cooling water hydrogen pumping device in the generator in the embodiment can be installed at the upstream of the flow meter, and also can be installed at the downstream of the flow meter. When the cold water hydrogen pumping device in the generator is arranged at the upstream of the flow meter, the air pump 4 blows air to the flow meter, and when the cold water hydrogen pumping device is arranged at the downstream of the flow meter, the air pump 4 pumps air from the flow meter.
The air inlet connector 2 and the air outlet connector 3 are explosion-proof connectors, connector explosion-proof filter sheets 17 are uniformly fixed in connector bodies 11 of the air inlet connector 2 and the air outlet connector 3, a sealing gasket 18 is arranged on one side of each connector explosion-proof filter sheet 17, a filter sheet pressing ring 19 pressing the connector explosion-proof filter sheets 17 is arranged on the other side of each connector explosion-proof filter sheet 17, and the filter sheet pressing ring 19 is assembled in the connector bodies 11 in a threaded mode. The joint explosion-proof filter sheet 17 is used for filtering gas and impurities, so that the long-term safe and effective operation of the diaphragm pump is ensured, an explosion-proof effect is achieved, and the safety of equipment is improved.
The shell 1 is provided with a shell explosion-proof filter 21 for the gas in the shell 1 to escape and a gland 20 for compressing the shell explosion-proof filter 21, and the shell 1 is an explosion-proof cast aluminum shell. When gas leakage occurs in the pipeline inside the shell 1, the shell explosion-proof filter 21 can be used for gas escape, and the safety of the device is effectively improved.
In this embodiment, the housing explosion-proof filter 21 and the connector explosion-proof filter 17 are both sintered metal gas filters. The sintered metal gas filter plate is high temperature resistant, high in strength and has a certain explosion-proof function.
When the cold water and hydrogen pumping and discharging device in the generator works, if the air pressure in the hydrogen discharging air path is normal, the one-way valve 5 of the through air path can be opened, the air in the cooling water tank is discharged outside through the through air path, and if the air pressure in the hydrogen discharging air path is lower than a set value, the controller controls the air pump 4 to work, the air pump 4 pumps the air in the cooling water tank to discharge outwards, and the normal work of the hydrogen detection device is ensured.
The cooling water tank in this embodiment may be a cooling water tank of a generator stator, or a cooling water tank of a heat exchanger that exchanges heat with hydrogen.
The specific embodiment 2 of the cooling water hydrogen pumping device in the generator of the utility model is different from the above embodiments only in that the mounting frame is used for replacing the shell in the embodiment.
The specific embodiment 3 of the cold water and hydrogen gas pumping and releasing device in the generator of the present invention is different from the above embodiments only in that in this embodiment, the three-way joint is an integrated structure, and at this time, no joint explosion-proof filter sheet is arranged in the three-way joint.
The specific embodiment 4 of the cooling water and hydrogen pumping device in the generator of the present invention is different from the above embodiments only in that in this embodiment, the joint cover and the joint body are fixedly connected by bolts.
The specific embodiment 5 of the cooling water and hydrogen pumping device in a generator of the present invention is different from the above embodiments only in that, in this embodiment, the connector body is not provided with the adapter, the connector body is connected with the external pipeline through the external threaded hole, and at this time, an adaptive connector needs to be arranged on the external pipeline.
The specific embodiment 6 of the cooling water and hydrogen pumping device in the generator of the present invention is different from the above embodiments only in that in this embodiment, the pressure in the cooling water tank is determined by the flow rate in the hydrogen discharge pipeline, and the controller controls the start and stop of the air pump according to the size of the gas flow meter in the hydrogen discharge pipeline.
The specific embodiment 7 of the cooling water and hydrogen pumping and releasing device in the generator of the present invention is different from the above embodiments only in that in this embodiment, the joint explosion-proof filter sheet is compressed in the joint body through the adapter. In other embodiments, the joint explosion-proof filter sheet can also be fixed in the joint body by bonding.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. Cold water hydrogen drainage device in generator, its characterized in that includes:
the air inlet joint (2) is used for connecting a hydrogen discharge pipeline of the cooling water tank;
the gas outlet joint (3) is connected to a hydrogen discharge pipeline of the cooling water tank and is positioned at the downstream of the gas inlet joint (2);
the straight-through gas path is positioned between the gas inlet joint (2) and the gas outlet joint (3) to ensure that the gas inlet joint (2) is communicated with the gas outlet joint (3), and a straight-through gas path one-way valve (5) for gas to pass through in a one-way is arranged on the straight-through gas path;
the bypass gas path is arranged in parallel with the straight gas path, one end of the bypass gas path is communicated with the gas inlet joint (2), and the other end of the bypass gas path is communicated with the gas outlet joint (3);
and the air pump (4) is arranged on the bypass air path and is used for being connected with the controller, and when the pressure in the cooling water tank is lower than a set value, the controller controls the start and can pump out the air in the cooling water tank, so that the air enters from the air inlet connector (2) and is discharged from the air outlet connector (3) through the bypass air path.
2. The device for pumping cold water and hydrogen in the generator according to claim 1, wherein the device for pumping cold water and hydrogen in the generator comprises a housing (1), the air inlet joint (2) and the air outlet joint (3) are both disposed on the housing (1), and the air pump (4), the through air path and the bypass air path are all located in the housing (1).
3. The cold water hydrogen pumping device in the generator according to claim 2, characterized in that the housing (1) is provided with a housing explosion-proof filter (21) for the gas in the housing (1) to escape and a gland (20) for pressing the housing explosion-proof filter (21).
4. The cold water and hydrogen pumping device in the generator according to claim 2 or 3, wherein the air inlet joint (2) and the air outlet joint (3) are respectively provided with an external port for external connection, a straight channel port communicated with the straight channel and a bypass port connected with the bypass channel, the air inlet joint (2) and the air outlet joint (3) respectively comprise a joint body (11) and a joint cover (12) detachably fixed on the joint body (11), the straight channel port and the bypass port are respectively arranged on the joint cover (12), the joint body (11) and the joint cover (12) are enclosed to form a joint buffer cavity (13), and the external port, the straight channel port and the bypass port are respectively communicated with the joint buffer cavity (13).
5. The cold water hydrogen pumping device in the generator according to claim 4, wherein the joint body (11) is internally fixed with a joint explosion-proof filter sheet (17), the joint body (11) is provided with a loading port for loading the joint explosion-proof filter sheet (17), and the joint cover (12) is fixed at the loading port.
6. The cold water hydrogen pumping device in the generator according to claim 5, characterized in that the joint body (11) is internally threaded with a filter pressing ring (19) pressing the joint explosion-proof filter (17).
7. The cold water hydrogen extraction device in the generator according to claim 4, wherein the joint cover (12) is connected with the joint body (11) in a threaded manner.
8. The cold water and hydrogen pumping device in the generator according to claim 1, 2 or 3, characterized in that the air inlet joint (2) and the air outlet joint (3) are explosion-proof joints, and joint explosion-proof filter sheets (17) are arranged in the explosion-proof joints.
9. The cold water and hydrogen pumping device in generator according to claim 1, 2 or 3, characterized in that the air inlet joint (2) and the air outlet joint (3) each include a joint body (11), the joint body (11) is provided with an external threaded hole, the external threaded hole is provided with an adapter, the external threaded hole on the joint body (11) in the air inlet joint (2) and the external threaded hole on the joint body (11) in the air outlet joint (3) have the same aperture, so that the adapters connected with the two joint bodies (11) can be interchanged.
10. The cold water hydrogen pumping device in the generator according to claim 2 or 3, characterized in that the housing (1) is an explosion-proof aluminum housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121526381.9U CN215364984U (en) | 2021-07-06 | 2021-07-06 | Generator inner cooling water hydrogen pumping and discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121526381.9U CN215364984U (en) | 2021-07-06 | 2021-07-06 | Generator inner cooling water hydrogen pumping and discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215364984U true CN215364984U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121526381.9U Active CN215364984U (en) | 2021-07-06 | 2021-07-06 | Generator inner cooling water hydrogen pumping and discharging device |
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| Country | Link |
|---|---|
| CN (1) | CN215364984U (en) |
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2021
- 2021-07-06 CN CN202121526381.9U patent/CN215364984U/en active Active
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