A solenoid valve switch with slide valve structure for purging fuel
A solenoid valve, slide valve technology, applied in the fuel valve of turbine/propulsion device, turbine/propulsion fuel delivery system, charging system, etc., can solve the problem of inconvenient fuel cleaning, achieve simple structure, high reliability, application The effect of a wide pressure range
Active Publication Date: 2021-06-08
AECC AVIATION POWER CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem of inconvenient cleaning of residual fuel oil in the gas turbine fuel system in the prior art, and to provide a solenoid valve switch with slide valve structure for purging fuel oil, which has simple structure, convenient use and high reliability
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[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0029] see figure 1 , the solenoid valve switch of the present invention includes a solenoid valve 1 and a slide valve 8 installed on the main casing 3, the inside of the main casing 3 forms a gas flow channel, and the end baffle of the solenoid valve 1 and the ring belt of the valve seat 2 The surface is tightly sealed, which can block the outflow of gas in the main housing 3 . The spool valve 8 is arranged in the bushing 6, and the inside of the spool valve 8 is a valve inner cavity communicated with the gas flow channel. The valve inner cavity is supported by a spring 7, and the spool valve 8 is provided with a spool valve air outlet. The head of the slide valve 8 is closed by an end cap 10 connected to the main housing 3 . The head of the slide valve 8 is conical, and the air outlet of the slide valve is opened at the center of the head ...
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A solenoid valve switch with a slide valve structure for purging fuel oil, including a solenoid valve and a slide valve installed on the main casing, the inside of the main casing forms a gas flow channel, and the ring between the end baffle plate of the solenoid valve and the valve seat The belt surface is close to the seal, and the slide valve is arranged in the bushing. The inside of the slide valve is a valve body cavity connected with the gas flow channel. The valve body cavity is supported by a spring, and the slide valve is provided with a slide valve air outlet; A gas inlet and a gas outlet are provided on the main housings on both sides of the moving direction, and the valve seat is provided with a vent hole connecting the inner chamber of the valve with the outside atmosphere. When the solenoid valve is energized, the armature overcomes the elastic movement of the spring under the action of electromagnetic force, the inner cavity of the valve communicates with the outside atmosphere, the air pressure in the inner cavity of the valve decreases, and there is a pressure difference between the inner cavity and the inlet of the valve, and the air enters the inner cavity of the valve through the gas inlet. Pushed by the air pressure, the slide valve moves against the elastic force of the spring, and the gas inlet and gas outlet are connected. The invention has simple structure and high reliability.
Description
technical field [0001] The invention relates to gas turbine air system components, in particular to an electromagnetic valve switch with a slide valve structure for purging fuel oil. Background technique [0002] After the fuel system of the gas turbine is shut down, there is residual fuel in the pipeline of the gas turbine, which needs to be purged by the air system to prevent the fuel remaining in the system from deflagrating during ignition and causing safety accidents. Because the gas turbine has two oil supply lines, two purge valve switches need to be designed. Still lack a kind of convenient and reliable electromagnetic valve switch at present. Contents of the invention [0003] The object of the present invention is to solve the problem of inconvenient cleaning of residual fuel in the gas turbine fuel system in the prior art, and provide a solenoid valve switch with slide valve structure for purging fuel, which has simple structure, convenient use and high reliabi...
Claims
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IPC IPC(8): F02C7/232
CPCF02C7/232
Inventor 梁明莉杨芬殷旭王兆丰张雄马峰刘涛蔡婉花
Owner AECC AVIATION POWER CO LTD