An electro-hydraulic linkage gas valve
A gas valve and linkage technology, which is applied in hydraulic and pneumatic fields, can solve problems such as high cost, large driving current, and technical complexity, and achieve the effects of preventing gas backflow, improving response speed, and reducing costs
Active Publication Date: 2019-07-02
CHONGQING HONGJIANG MACHINERY CO LTD
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AI Technical Summary
Problems solved by technology
This kind of EFI valve is directly driven by electromagnetic force, which requires a large drive current, complex technology, high cost, and the risk of gas backflow
Method used
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Embodiment Construction
[0026] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0027] Such as Figure 1 to Figure 6 The electro-hydraulic linkage gas valve shown includes a valve housing 1, a support seat 3 located in the valve housing 1, a valve seat 4 located in the support seat 3, a valve plate 8, six return springs 10 with high stiffness, and a limiter. The seat 12 and the pressure plate 15, the compression bushing 19, the housing 2, and the top cover 27 located above the support seat 3, the first sealing ring 51 is installed between the support seat 3 and the valve housing 1, and the top cover 27 is installed On the upper end of the housing 2 , a sixth sealing ring 56 is installed between the top cover 27 and the housing 2 .
[0028]The side wall of the support seat 3 is evenly provided with six support seat intake holes 30 communicating with the gas inlet 7 on the valve housing 1, and the bottom of the support seat 3 is provided with a s...
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The invention discloses an electro-hydraulic linking gas valve. The electro-hydraulic linking gas valve comprises a valve housing, a supporting base, a valve seat, a valve plate, a reset spring, a limiting seat, a shell, a hollow piston, a lifting rod and a lifting rod supporting spring. The upper end of the lifting rod extends out of the shell and is fixedly connected to a baffle plate; the hollow piston is arranged through the upper portion of the lifting rod in a sleeving manner and is compressed to a step surface of the lifting rod through the baffle plate; an isolating membrane is arranged between the lower end of the hollow piston and the lifting rod; the lower portion of the lifting rod penetrates through the lifting rod supporting spring and is fixedly connected to a bulb push rod;the bulb of the bulb push rod is connected to the valve plate universally; a plunger hole is formed in the shell, a plunger and a plunger supporting spring are arranged in the plunger hole, the plunger and the plunger hole are matched to form a hydraulic oil plunger cavity, the hydraulic oil plunger cavity communicates to the port A of an electromagnetic reversing valve on the side surface of theshell, the ports P and T of the electromagnetic reversing valve separately communicate to oil paths P and T of the shell, and the upper end of the plunger leans against the baffle plate. The gas valve can improve the sealing reliability, and meanwhile, the cost is lowered.
Description
technical field [0001] The invention belongs to the hydraulic and pneumatic fields, and in particular relates to an electro-hydraulic linkage gas valve. Background technique [0002] Gas engines or dual-fuel engines fueled by natural gas have the same thermal efficiency as diesel engines, and have the advantages of low emissions and less pollution. In the case of increasingly scarce oil and higher environmental protection requirements, the development of gas engines is of great significance, and the fuel injection system is a key component of gas engines and dual-fuel engines, and its performance directly affects the power and economy of the engine. and emissions. At present, the commonly used gas injection valves are all driven by electromagnetic force. For example, CN106121867A discloses a gas electric injection valve for gas fuel engines. Move to form a gas channel between the lower surface of the valve plate and the upper surface of the valve seat. When the solenoid va...
Claims
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IPC IPC(8): F02M21/02
CPCF02M21/0215F02M21/023Y02T10/30
Inventor 谢远文梁宏喜向宏宇苏亚军田威郭海堂王康
Owner CHONGQING HONGJIANG MACHINERY CO LTD