CN217082193U - Nitrogen making, hydrogen measuring and hydrogen discharging device for cold water tank in stator of generator - Google Patents
Nitrogen making, hydrogen measuring and hydrogen discharging device for cold water tank in stator of generator Download PDFInfo
- Publication number
- CN217082193U CN217082193U CN202220694656.8U CN202220694656U CN217082193U CN 217082193 U CN217082193 U CN 217082193U CN 202220694656 U CN202220694656 U CN 202220694656U CN 217082193 U CN217082193 U CN 217082193U
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- pipeline
- nitrogen
- water tank
- cold water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The device for producing nitrogen, measuring hydrogen and discharging hydrogen of the cold water tank in the stator of the generator comprises a nitrogen production pipeline and a hydrogen measurement and discharging pipeline; the inlet end of the nitrogen making pipeline is provided with a compressed air inlet, the outlet end of the nitrogen making pipeline is communicated with the internal cold water tank, the inlet end of the hydrogen measuring and discharging pipeline is connected with a hydrogen discharging outlet of the internal cold water tank, and the outlet end of the hydrogen measuring and discharging pipeline is arranged as an exhaust port; an electric ball valve, a pressure reducer, a filter group, a hollow fiber membrane and a needle valve are sequentially arranged on the nitrogen production pipeline along the airflow direction; the hydrogen measuring and discharging pipeline is sequentially provided with a condenser, a hydrogen concentration detection unit and a flowmeter along the airflow direction. The utility model discloses well nitrogen gas derives from compressed air, and is not only cheap, the follow-up maintenance volume that needs the unscheduled change when having saved external bottled nitrogen gas moreover. The safe operation of the power generation equipment can be ensured by filling nitrogen into the internal cold water tank to measure hydrogen and discharge hydrogen.
Description
Technical Field
The utility model belongs to the technical field of gaseous detection, concretely relates to hydrogen cooling generator stator inner cooling water tank nitrogen making hydrogen measuring and discharging device.
Background
A water-hydrogen cooling type generator set, wherein [ water ] is a stator winding and an outgoing line which are cooled in (stator cooling) water; [ HYDROGEN ] is the internal cooling of the rotor winding with hydrogen; [ HYDROGEN ] is the working mode that the stator core and the rotor body are cooled by hydrogen. Therefore, the generator is provided with a hydrogen system, an internal cooling water system and a sealing oil system (to prevent hydrogen gas from leaking out of the shaft seal).
Because of the high permeability of hydrogen, hydrogen in the generator can leak into the water outside the generator housing or inside the stator windings in some cases where the generator cooling system is not sealed properly. The generator hydrogen leakage monitoring object is the tightness of the stator winding water internal cooling system, the enclosed bus thereof and the sealing oil system. The monitoring of a water system is particularly important, and a small amount of hydrogen can leak into the stator inner cold water tank and is enriched at the top of the inner cold water tank because the hydrogen pressure of the generator is higher than the water pressure. When the hydrogen content at the top of the inner cooling water tank exceeds a certain concentration, the explosion risk can occur. Therefore, in addition to hydrogen leakage monitoring, a hydrogen discharge device is generally installed at the top of a cooling water tank in a stator of the generator.
The general method of the hydrogen discharge device is that nitrogen is introduced into the inner cooling water tank to realize hydrogen replacement by utilizing the easy availability and the economical efficiency of the nitrogen, so that the hydrogen content at the top of the inner cooling water tank is reduced, and accidents are prevented from happening. However, the external nitrogen cylinder has limited capacity, needs to be replaced irregularly, has large maintenance amount and is unsafe.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a cold water tank nitrogen making, hydrogen measuring and hydrogen discharging device in a generator stator.
The utility model adopts the technical proposal that the device for producing nitrogen, measuring hydrogen and discharging hydrogen of the cold water tank in the stator of the generator comprises a nitrogen production pipeline and a hydrogen measuring and discharging pipeline;
the inlet end of the nitrogen making pipeline is provided with a compressed air inlet, the outlet end of the nitrogen making pipeline is communicated with the internal cold water tank, the inlet end of the hydrogen measuring and discharging pipeline is connected with a hydrogen discharging outlet of the internal cold water tank, and the outlet end of the hydrogen measuring and discharging pipeline is arranged as an exhaust port;
an electric ball valve, a pressure reducer, a filter group, a hollow fiber membrane and a needle valve are sequentially arranged on the nitrogen production pipeline along the airflow direction;
the hydrogen measuring and discharging pipeline is sequentially provided with a condenser, a hydrogen concentration detection unit and a flowmeter along the airflow direction.
The hollow fiber membrane is also provided with an exhaust gas outlet.
The electric ball valve controls the circulation or the cut-off of the compressed air, and when the generator is overhauled and powered off, if the nitrogen making device is also powered off, the electric ball valve is cut off; the pressure reducer controls the gas pressure to make the gas pressure meet the requirement of nitrogen production of the hollow fiber membrane; the filter group is used for filtering impurities in the compressed air, filtering impurities such as water, oil and fixed particles possibly existing in the compressed air, reducing the post-stage pollution and prolonging the service life of the hollow fiber membrane; the hollow fiber membrane separates nitrogen in the introduced compressed air, and the generated waste gas is discharged from a waste gas outlet; the needle valve adjusts the flow rate and controls the nitrogen production concentration.
The condenser condenses the water vapor in the displaced and discharged hydrogen, the flowmeter detects the gas flow, the hydrogen concentration detection unit measures the instant concentration in the hydrogen discharge process, and the accumulated hydrogen discharge amount per day or even per month can be obtained through the time and flow integration of the instant concentration value of the hydrogen.
The beneficial effects of the utility model are that, nitrogen gas derives from compressed air, and is not only cheap, need the follow-up maintenance volume of unscheduled change when having saved external bottled nitrogen gas moreover, and is safe guaranteed. The safe operation of the power generation equipment can be ensured by filling nitrogen into the internal cold water tank to measure hydrogen and discharge hydrogen.
Drawings
Fig. 1 is a schematic view of the gas circuit structure of the present invention.
Detailed Description
As shown in fig. 1, 1 is a compressed air inlet, 2 is an electric ball valve, 3 is a pressure reducer, 4 is a filter group, 5 is a hollow fiber membrane exhaust gas outlet, 6 is a hollow fiber membrane, 7 is a needle valve, 8 is an internal cooling water tank, 9 is a condenser, 10 is a hydrogen concentration detection unit, 11 is a flow meter, 12 is an exhaust port, 13 is a nitrogen production pipeline, and 14 is a hydrogen measurement and exhaust pipeline.
The utility model discloses a generator stator inner cooling water tank nitrogen making and hydrogen measuring hydrogen discharging device, which comprises a nitrogen making pipeline 13 and a hydrogen measuring and discharging pipeline 14; the inlet end of the nitrogen making pipeline 13 is provided with a compressed air inlet 1, the outlet end of the nitrogen making pipeline 13 is communicated with the inner cold water tank 8, the inlet end of the hydrogen measuring and discharging pipeline 14 is connected with the hydrogen discharging outlet of the inner cold water tank 8, and the outlet end of the hydrogen measuring and discharging pipeline 14 is provided with an exhaust port 12; the nitrogen making pipeline 13 is sequentially provided with an electric ball valve 2, a pressure reducer 3, a filter group 4, a hollow fiber membrane 6 and a needle valve 7 along the airflow direction; the hydrogen measuring and discharging pipeline 14 is provided with a condenser 9, a hydrogen concentration detection unit 10 and a flowmeter 11 in sequence along the airflow direction.
The hollow fiber membranes 6 are also provided with an exhaust gas outlet 5.
The electric ball valve 2 controls the circulation or the cut-off of the compressed air, and when the generator is overhauled and powered off, if the nitrogen making device is also powered off, the electric ball valve 2 is cut off; the pressure reducer 3 controls the gas pressure to make the gas pressure meet the nitrogen making requirement of the hollow fiber membrane 6; the filter group 4 is used for filtering impurities in the compressed air, filtering impurities possibly existing in the compressed air, such as water, oil, fixed particles and the like, reducing the post-stage pollution and prolonging the service life of the hollow fiber membrane 6; the hollow fiber membrane 6 separates nitrogen in the introduced compressed air, and the generated waste gas is discharged from a waste gas outlet 5; the needle valve 7 adjusts the flow rate to control the nitrogen production concentration.
The condenser 9 condenses the water vapor in the displaced and discharged hydrogen gas, the flowmeter 11 detects the gas flow, the hydrogen concentration detection unit 10 measures the instant concentration in the hydrogen discharge process, and the accumulated hydrogen discharge amount per day or even per month can be obtained through the time and flow integration of the instant concentration value of the hydrogen gas.
When the air compressor is used, compressed air is introduced from the compressed air inlet 1, and the compressed air can be from a power plant or can be generated by an external compressor.
The beneficial effects of the utility model are that, nitrogen gas derives from compressed air, and is not only cheap, the follow-up maintenance volume that needs the unscheduled change when having saved external bottled nitrogen gas moreover. The safe operation of the power generation equipment can be guaranteed by filling nitrogen into the internal cold water tank and discharging hydrogen.
The present embodiment is not intended to limit the shape, structure, etc. of the present invention in any form, and all the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.
Claims (2)
1. Cold water tank nitrogen making hydrogen measuring and discharging device in generator stator, its characterized in that: comprises a nitrogen making pipeline (13) and a hydrogen measuring and discharging pipeline (14); the inlet end of the nitrogen making pipeline (13) is provided with a compressed air inlet (1), the outlet end of the nitrogen making pipeline (13) is communicated with the internal cold water tank (8), the inlet end of the hydrogen measuring and discharging pipeline (14) is connected with the hydrogen discharging outlet of the internal cold water tank (8), and the outlet end of the hydrogen measuring and discharging pipeline (14) is provided with an exhaust port (12); an electric ball valve (2), a pressure reducer (3), a filter group (4), a hollow fiber membrane (6) and a needle valve (7) are sequentially arranged on the nitrogen making pipeline (13) along the airflow direction;
a condenser (9), a hydrogen concentration detection unit (10) and a flowmeter (11) are sequentially arranged on the hydrogen measuring and discharging pipeline (14) along the airflow direction.
2. The generator stator internal cold water tank nitrogen-making hydrogen-measuring hydrogen-discharging device according to claim 1, characterized in that: the hollow fiber membrane (6) is also provided with an exhaust gas outlet (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220694656.8U CN217082193U (en) | 2022-03-29 | 2022-03-29 | Nitrogen making, hydrogen measuring and hydrogen discharging device for cold water tank in stator of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220694656.8U CN217082193U (en) | 2022-03-29 | 2022-03-29 | Nitrogen making, hydrogen measuring and hydrogen discharging device for cold water tank in stator of generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217082193U true CN217082193U (en) | 2022-07-29 |
Family
ID=82553666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220694656.8U Active CN217082193U (en) | 2022-03-29 | 2022-03-29 | Nitrogen making, hydrogen measuring and hydrogen discharging device for cold water tank in stator of generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217082193U (en) |
-
2022
- 2022-03-29 CN CN202220694656.8U patent/CN217082193U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208886391U (en) | Mobile gas drive double pump adds hydrogen machine | |
| CN111006127B (en) | Hydrogenation station taking industrial high-pressure composite metal hydride hydrogen storage system as hydrogen source | |
| CN217082193U (en) | Nitrogen making, hydrogen measuring and hydrogen discharging device for cold water tank in stator of generator | |
| CN113803638A (en) | Intelligent generator hydrogen cooling system and control method | |
| CN202418590U (en) | Oil deflector ring for bearing box of steam turbine | |
| CN201437457U (en) | Online automatic recovery device for oil tank volatile gas | |
| CN206785605U (en) | A kind of control system for carbon-dioxide gas compressor dry gas seals | |
| CN112178460A (en) | High-low concentration gas mixing system and gas mixing process control method thereof | |
| CN211987221U (en) | Vacuum degassing and purifying device for inlet belt pressure type sealing oil | |
| CN2851247Y (en) | Ultrasonic vacuum oxygen removing device for boiler water | |
| CN211040456U (en) | Simple hydrogenation device | |
| CN102305105B (en) | Sealing structure of screw expander | |
| CN212319406U (en) | Integrated filling and discharging valve for high-pressure hydrogen cylinder | |
| CN211644598U (en) | Novel oxygen generation device | |
| CN216742139U (en) | Sealing device, sealing control system and silane compressor | |
| CN209311159U (en) | Inner cold water case hydrogen leakage monitor cycle sampling device | |
| CN208750381U (en) | One kind being applied to the matched lubricating oil station of turbo-expander | |
| CN220505125U (en) | Shaft seal system of steam turbine | |
| CN210859320U (en) | Air isolation device for process air compressor | |
| CN2819058Y (en) | Vacuum oxygen remover of water in boiler | |
| CN216356362U (en) | Intelligent generator hydrogen cooling system | |
| CN110736025A (en) | simple hydrogenation device | |
| CN218971476U (en) | Leakage gas recovery device of nitrogen centrifugal compressor for hydrogen liquefaction | |
| CN212479531U (en) | Reciprocating compressor filler sweeps control system | |
| CN212717057U (en) | Mutual inductor pouring and vacuumizing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |