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Gas turbine natural gas adjusting pipeline nitrogen filling anti-leakage system

A technology for regulating pipelines and gas turbines, which is applied to turbine/propulsion fuel delivery systems, charging systems, fuel flow passages of turbine/propulsion devices, etc. The effect of reducing the risk of tripping

Active Publication Date: 2022-02-08
广东粤电新会发电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

like figure 1 As shown, in order to ensure the emptying effect of each section of the pipeline, taking the GE9F.05 gas turbine as an example, a total of 4 sets of emptying valves are set. , bring hidden dangers to the safe and stable operation of the unit

Method used

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  • Gas turbine natural gas adjusting pipeline nitrogen filling anti-leakage system
  • Gas turbine natural gas adjusting pipeline nitrogen filling anti-leakage system
  • Gas turbine natural gas adjusting pipeline nitrogen filling anti-leakage system

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] In the specific implementation process, such as figure 2 , image 3 and Figure 4 As shown, a gas turbine natural gas regulating pipeline is filled with nitrogen to prevent leakage, including a fuel pipeline 1, a shunt pipe 2, a gas turbine body 3, and a fuel regulating valve 4. The fuel pipeline 1 communicates with the shunt pipe 2, and the shunt pipe The pipe 2 communicates with the fuel inlet of the gas turbine body 3, the fuel regulating valves 4 are respectively fixed on multiple branch pipes of the branch pipe 2, and the end of the fuel pipeline 1 away from the gas turbine body 3 is fixed with a safety shut-off valve 5, A speed ratio valve 6 is fixed on the end of the fuel pipeline 1 close to the gas engine body 3, and an auxiliary cut-off valve 7 is fixed between the speed ratio valve 6 and the safety shut-off valve 5 on the fuel pipeli...

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Abstract

The invention provides a gas turbine natural gas adjusting pipeline nitrogen filling anti-leakage system which comprises a fuel pipeline, a flow dividing pipe, a gas turbine body and fuel adjusting valves, wherein the fuel pipeline is communicated with the flow dividing pipe, the flow dividing pipe is communicated with a fuel inlet of the gas turbine body, and the fuel adjusting valves are fixed to a plurality of branch pipes of the flow dividing pipe respectively. The system can assist a pipeline between a stop valve and a speed ratio valve to form air resistance, so that natural gas is prevented from leaking to the gas turbine body; meanwhile, the number of emptying valves is reduced to one group, so that the risk of unit tripping caused by misoperation is greatly reduced; pressure detection is conducted through a mechanical structure, so that the reliability is high; when the natural gas leaks, through a buffer mechanism, the pressure of the second pressure area is increased, so that frequent starting of the nitrogen charging pump to work is avoided, and energy consumption is reduced; and when fuel is input into the gas turbine body through the fuel pipeline, pressure fluctuation of fuel gas can be buffered through the buffer mechanism, so that stability is improved.

Description

technical field [0001] The invention relates to the technical field of gas turbine leakage prevention, in particular to a nitrogen-filled gas blocking leakage prevention system for a natural gas regulating pipeline of a gas turbine. Background technique [0002] After the gas turbine is shut down, in order to ensure the hot standby state of the unit, natural gas with working pressure must be kept in the natural gas fuel adjustment pipeline, but in order to prevent internal leakage of the valve and residual natural gas from leaking into the gas turbine body, and avoid leakage into the gas turbine when the unit is started The deflagration of natural gas will isolate the fuel regulating pipeline through the valve, and set the exhaust valve to empty the pipeline isolated between the valves, so as to ensure that the natural gas will not leak to the gas turbine body. Such as figure 1 As shown, in order to ensure the emptying effect of each section of the pipeline, taking the GE9F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/22F02C7/232
CPCF02C7/222F02C7/232
Inventor 宋汉方忠昉胡玉剑高健王艺游健廖国刘政彭国光严忠鹏
Owner 广东粤电新会发电有限公司
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