CN212643545U - Pressure difference valve device of gas turbine generator - Google Patents
Pressure difference valve device of gas turbine generator Download PDFInfo
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- CN212643545U CN212643545U CN202021273527.9U CN202021273527U CN212643545U CN 212643545 U CN212643545 U CN 212643545U CN 202021273527 U CN202021273527 U CN 202021273527U CN 212643545 U CN212643545 U CN 212643545U
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Abstract
The utility model discloses a gas turbine generator differential pressure valve device, by the differential pressure valve, differential pressure valve import stop valve, differential pressure valve export stop valve, the flowmeter, the bypass ball valve is constituteed, differential pressure valve import stop valve, the differential pressure valve, differential pressure valve export stop valve, connect through the pipeline way between the flowmeter, the bypass ball valve passes through the pipeline and connects in parallel with the differential pressure valve, the differential pressure valve has two signal sources, be atmospheric pressure signal and oil pressure signal respectively, the atmospheric pressure signal is got from the built-in gas pressure of electricity generation, oil pressure signal is got from differential pressure valve device export oil pressure. In the process of starting, running and stopping the generator to discharge hydrogen, the pressure difference valve device is used for providing sealing oil for the sealing bush of the steam and excitation ends of the generator to seal hydrogen in the generator, so that the generator set can run safely and stably. The utility model discloses a satisfy the requirement of gas turbine generator safety, reliable operation.
Description
Technical Field
The utility model relates to a gas turbine generator seals oil system field, especially relates to a gas turbine generator differential pressure valve device.
Background
The differential pressure valve device of the sealing oil system is one of important components of a gas turbine generator set, and the stability and reliability of the operation of the differential pressure valve device are directly related to whether the generator can safely and stably operate. The pressure difference valve device seals hydrogen inside the generator, so that the hydrogen effectively cools the stator, the rotor and the stator iron core of the generator. The utility model discloses can guarantee that hydrogen oil pressure difference remains stable and accurate measurement gets into the sealed oil flow of generator all the time along with the change of hydrogen pressure in the generator.
Disclosure of Invention
The utility model aims at providing a satisfy the pressure differential valve device of gas turbine generator safety, reliable operation requirement. The technical scheme of the utility model is that: by differential pressure valve (1), differential pressure valve import stop valve (2), differential pressure valve export stop valve (3), flowmeter (4), bypass ball valve (5), pipeline (6) are constituteed, differential pressure valve import stop valve (2), differential pressure valve (1), differential pressure valve export stop valve (3), connect through pipeline (6) between flowmeter (4), bypass ball valve (5) are parallelly connected with differential pressure valve (1) through pipeline (6), differential pressure valve (1) have two signal sources, be atmospheric pressure signal (17) and oil pressure signal (18) respectively, gas pressure signal (17) are got from the built-in gas pressure of electricity generation, oil pressure signal (18) are got from differential pressure valve device export oil pressure.
Differential pressure valve (1) by adjusting screw (7), locknut (8), go up valve body (9), spring holder (10), spring (11), valve membrane subassembly (12), lower valve body (13), valve rod valve plug (14), control spring (15), valve body end cap (16) are constituteed, adjusting screw (7), locknut (8), go up valve body (9) and pass through threaded connection, adjusting screw (7) withstand spring (11), with the bolt, the nut will go up valve body (9) and lower valve body (13) connection fixed and compress tightly valve membrane subassembly (12), valve rod valve plug (14) and valve membrane subassembly (12) threaded connection, valve rod valve plug (14) compress tightly control spring (15), valve body end cap (16) and lower valve body (13) threaded connection.
Principle of operation
Due to the gap between the generator shaft and the seal shoe, hydrogen gas can leak from the inside of the generator to the air, which can cause damage. A fixed flow of sealing oil fills this gap as a barrier to seal the hydrogen inside the generator. In normal operation, the differential pressure valve arrangement is supplied with oil by a main lubricating oil system which supplies oil to the turbine and generator bearings. The differential pressure valve 1 has two signal sources, namely an air pressure signal 17 and an oil pressure signal 18. The valve rod and the valve plug 14 can move according to the change of the air pressure signal 17, the opening degree of the valve is changed, and the sealing oil pressure is automatically adjusted, so that the sealing oil pressure entering the generator is higher than the hydrogen pressure in the generator by a fixed value. The sealing oil seals hydrogen inside the generator, prevents hydrogen from leaking along the shaft end of the generator, and enables the hydrogen to effectively cool the rotating shaft and the stator core of the generator. The flowmeter 4 is used for accurately measuring the sealing oil quantity entering the generator, and the sealing oil quantity needs to reach a design value. When the differential pressure valve 1 breaks down, the bypass ball valve 5 is manually opened, and the sealing oil enters the generator through the bypass ball valve 5 to prevent hydrogen leakage.
Drawings
FIG. 1 is a flow chart of a differential pressure valve device of a gas turbine generator
FIG. 2 is a schematic sectional view of a differential pressure valve
Detailed Description
As shown in fig. 1, the pressure difference valve device of the gas turbine generator is composed of a pressure difference valve 1, a pressure difference valve inlet stop valve 2, a pressure difference valve outlet stop valve 3, a flow meter 4, a bypass ball valve 5 and a pipeline 6, wherein the pressure difference valve 1 is composed of an adjusting screw 7, a locknut 8, an upper valve body 9, a spring seat 10, a spring 11, a valve membrane component 12, a lower valve body 13, a valve rod and a valve plug 14, a control spring 15 and a valve body plug 16, and the adjusting screw 7, the locknut 8 and the upper valve body 9 are connected through threads. The adjusting screw 7 is abutted against the spring 11, the upper valve body 9 and the lower valve body 13 are fixedly connected and pressed on the valve membrane component 12 through bolts and nuts, the valve rod and the valve plug 14 are in threaded connection with the valve membrane component 12, the valve rod and the valve plug 14 are pressed on the control spring 15, and the valve plug 16 is in threaded connection with the lower valve body 13. The differential pressure valve 1 has two signal sources, namely an air pressure signal 17 and an oil pressure signal 18.
As shown in fig. 2, the differential pressure valve 1 is composed of an adjusting screw 7, a locknut 8, an upper valve body 9, a spring seat 10, a spring 11, a valve membrane assembly 12, a lower valve body 13, a valve rod valve plug 14, a control spring 15 and a valve body plug 16, wherein the adjusting screw 7, the locknut 8 and the upper valve body 9 are in threaded connection, the adjusting screw 7 abuts against the spring 11, the upper valve body 9 and the lower valve body 13 are fixedly connected and tightly pressed against the valve membrane assembly 12 through bolts and nuts, the valve rod valve plug 14 is in threaded connection with the valve membrane assembly 12, the valve rod valve plug 14 compresses the control spring 15, and the valve body plug 16 is in threaded connection with the lower valve body 13.
Finally, the scope of protection of the present invention is not limited to the embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (2)
1. A pressure difference valve device of a gas turbine generator is characterized in that: by differential pressure valve (1), differential pressure valve import stop valve (2), differential pressure valve export stop valve (3), flowmeter (4), bypass ball valve (5), pipeline (6) are constituteed, differential pressure valve import stop valve (2), differential pressure valve (1), differential pressure valve export stop valve (3), connect through pipeline (6) between flowmeter (4), bypass ball valve (5) are parallelly connected with differential pressure valve (1) through pipeline (6), differential pressure valve (1) have two signal sources, be atmospheric pressure signal (17) and oil pressure signal (18) respectively, gas pressure signal (17) are got from the built-in gas pressure of electricity generation, oil pressure signal (18) are got from differential pressure valve device export oil pressure.
2. A differential pressure valve assembly for a gas turbine engine generator as defined in claim 1, wherein: differential pressure valve (1) by adjusting screw (7), locknut (8), go up valve body (9), spring holder (10), spring (11), valve membrane subassembly (12), lower valve body (13), valve rod valve plug (14), control spring (15), valve body end cap (16) are constituteed, adjusting screw (7), locknut (8), go up valve body (9) and pass through threaded connection, adjusting screw (7) withstand spring (11), with the bolt, the nut will go up valve body (9) and lower valve body (13) connection fixed and compress tightly valve membrane subassembly (12), valve rod valve plug (14) and valve membrane subassembly (12) threaded connection, valve rod valve plug (14) compress tightly control spring (15), valve body end cap (16) and lower valve body (13) threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021273527.9U CN212643545U (en) | 2020-07-02 | 2020-07-02 | Pressure difference valve device of gas turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021273527.9U CN212643545U (en) | 2020-07-02 | 2020-07-02 | Pressure difference valve device of gas turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212643545U true CN212643545U (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021273527.9U Active CN212643545U (en) | 2020-07-02 | 2020-07-02 | Pressure difference valve device of gas turbine generator |
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| CN (1) | CN212643545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354179A (en) * | 2021-12-30 | 2022-04-15 | 哈尔滨哈控实业有限公司 | Balance valve testing system and method |
-
2020
- 2020-07-02 CN CN202021273527.9U patent/CN212643545U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354179A (en) * | 2021-12-30 | 2022-04-15 | 哈尔滨哈控实业有限公司 | Balance valve testing system and method |
| CN114354179B (en) * | 2021-12-30 | 2023-09-26 | 哈尔滨哈控实业有限公司 | Balance valve testing system and method |
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