Solenoid valve switch provided with slide valve structure and used for purging fuel
A solenoid valve, slide valve technology, applied in the fuel valve of turbine/propulsion device, turbine/propulsion fuel delivery system, engine components, etc., can solve the problem of inconvenient fuel cleaning, achieve simple structure, wide application pressure range, reliable high sex effect
Active Publication Date: 2020-06-26
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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The invention provides a solenoid valve switch provided with a slide valve structure and used for purging fuel. The solenoid valve switch provided with the slide valve structure and used for purging the fuel comprises a solenoid valve and a slide valve, wherein the solenoid valve and the slide valve are installed on a main shell. A gas flow path is formed inside the main shell, an end baffle of the solenoid valve is in close-fitting with a ring belt surface of a valve seat in a sealing mode, the slide valve is arranged in a bush, an inner cavity of a vale body communicating with the gas flow path is formed in the slide valve, the inner cavity of the valve body is supported by a spring, a slide valve air outlet is formed in the slide valve, an air inlet and an air outlet are formed in the two sides, in the moving direction of the slide valve, of the main shell, a vent hole is formed in the valve seat, and the inner cavity of the valve body communicates with outside atmosphere through the vent hole. When the solenoid valve is energized, an armature overcomes the elastic force of the spring under the action of electromagnetic force and moves. The inner cavity of the valve body communicates with the outside atmosphere. The air pressure in the inner cavity of the valve body decreases. A pressure difference exists between the inner cavity of the valve body and the inlet. Air enters the inner cavity of the valve body through the air inlet. Under the pushing action of air pressure, the slide valve overcomes the elastic force of the spring and moves, and the air inlet and the air outlet are connected. The simple structure and high reliability are achieved.
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