Gas distribution valve and gas generator system

Abstract

The utility model relates to the technical field of gas generators, in particular to a gas distribution valve and a gas generator system, which comprise a valve core and a valve body, a first cavity and a second cavity are arranged in the valve body, the first cavity and the second cavity are of a communicated structure, one end of the valve body is provided with a pressure cavity, and the other end of the valve body is provided with a pressure sensor. The pressure cavity and the first cavity are of a communicated structure, the valve element is arranged among the first cavity, the second cavity and the pressure cavity, an elastic piece is arranged at the end, away from the pressure cavity, of the valve element, the valve element can horizontally move in the valve body through the elastic piece, and when the valve element moves towards one side, the elastic piece is arranged on the valve element. The first blocking ring and the second blocking ring can abut against the first output port and the second output port correspondingly, the first cavity and the second output port are connected in a communicating mode through the communicating loop, and the rotating speed and torque changes of the engine are fed back through oil pressure in the pressure cavity. And the movement range of the valve element in the valve body is driven through the oil pressure, so that the effect of adjusting the gas flow ratio is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas generators, in particular to a gas distribution valve and a gas generator system. Background Art

[0002] Gas-fired generator sets are power generation equipment that uses liquefied petroleum gas, natural gas, biogas, and other combustible gases as fuel. They are green and environmentally friendly energy devices with widespread applications in industry, agriculture, and homes. Traditional gas-fired generator sets often have large external gas cylinders that cannot be fixed to the frame and can be moved around, taking up a lot of space and creating unavoidable safety hazards. Furthermore, the large size and weight of the gas engine make pushing and pulling the generator difficult, making it difficult to move and transport.

[0003] According to prior art, Chinese utility model patent publication number CN203584568U describes a gas generator set comprising a frame, an engine and motor assembly mounted on the frame, a control panel connected to the engine and motor assembly, and a gas cylinder. This structure optimizes the structure of the gas generator set, reducing its weight while also making it easy to move and occupying a small space.

[0004] However, when reducing the size of the gas unit, a large number of electronic control valves are equipped, and the gas flow ratio is replaced with electronic control valves at the same time, which leads to certain safety hazards. Therefore, in view of these current situations, it is urgent to develop a gas distribution valve and gas generator system to meet the needs of actual use. Summary of the Invention

[0005] The utility model aims to provide a gas distribution valve and a gas generator system, so as to reduce the electrical control structure of the gas supply valve of the gas unit and adopt a purely mechanical structure to control the flow of the gas.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A gas distribution valve comprises a valve core and a valve body, the valve body is internally provided with a first cavity and a second cavity, the first cavity and the second cavity are in a conductive structure, the surface of the valve body is provided with a first input port, a second input port, a first output port and a second output port, the first input port and the first output port are connected in a conductive manner through the first cavity, the second input port and the second output port are connected in a conductive manner through the second cavity, one end of the valve body is provided with a pressure cavity, the pressure cavity and the first cavity are in a conductive structure, the valve core is arranged between the first cavity, the second cavity and the pressure cavity, and the end of the valve core away from the pressure cavity is provided with an elastic member, the valve core can move horizontally in the valve body through the elastic member, the middle part of the valve core is provided with a first blocking ring and a second blocking ring which protrude outward, the first blocking ring is arranged between the pressure cavity and the first cavity, and the second blocking ring is arranged between the first cavity and the second cavity, and a conductive loop is arranged between the first cavity and the second output port.

[0008] When the valve core moves to one side, the first blocking ring and the second blocking ring can abut at the first output port and the second output port respectively, and the first cavity and the second output port are connected in a conductive manner through the conductive loop.

[0009] In the above description, as a further scheme, an oil injection port is formed on one side of the valve body, and the oil injection port is connected in a conductive manner with the pressure cavity.

[0010] In the above description, as a further scheme, a valve cover is further included, the valve cover comprises a first valve cover and a second valve cover, the first valve cover is arranged at one end of the valve body close to the pressure cavity, the first valve cover covers one end of the valve body to form the pressure cavity, the second valve cover is arranged at one end of the valve body away from the pressure cavity, and the elastic member is arranged between the second valve cover and the valve core.

[0011] In the above description, as a further scheme, one end of the valve core close to the pressure cavity is a limiting rubber head which abuts against the inner wall of the first valve cover for limiting, and the other end of the valve core close to the elastic member is provided with a first limiting groove, and the elastic member is arranged in the first limiting groove.

[0012] In the above description, as a further scheme, the elastic member is composed of a spring, the inner wall of the second valve cover is provided with a second limiting groove matched with the first limiting groove, and the two ends of the spring are fixedly connected in the first limiting groove and the second limiting groove respectively.

[0013] A kind of gas generator system, including generator, engine, gas storage tank and gas supply pipeline, the rotating shaft of engine is fixedly connected with the input shaft of generator, the gas supply pipeline is connected with engine by the gas distribution valve described above, the first input port and the second input port of gas distribution valve are connected with gas storage tank, the first output port and the second output port of gas distribution valve are connected with engine, engine is also provided with oil pump, oil pump is drivingly connected with the rotating shaft of engine, the oil delivery end of oil pump is connected with the pressure cavity of gas distribution valve.

[0014] The beneficial effects of the present application are as follows:

[0015] The gas distribution valve and gas generator system of the present application use oil pressure inside the pressure cavity to feedback the speed and torque changes of the engine, and use the oil pressure to drive the movement range of the valve core in the valve body, thereby achieving the effect of adjusting the gas flow ratio. The pure mechanical structure replaces the electric control structure of the gas supply valve of the gas turbine unit and controls the gas flow in a pure mechanical adjustment mode. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Figure 1 is a schematic view of the internal structure of the gas distribution valve in the first state according to the present application;

[0017] Figure 2 Figure 2 is a schematic view of the internal structure of the gas distribution valve in the second state according to the present application;

[0018] Figure 3 Figure 3 is a schematic view of the cross-sectional structure of the valve body according to the present application;

[0019] Figure 4 Figure 4 is a schematic view of the cross-sectional structure of the valve core according to the present application;

[0020] Figure 5 Figure 5 is a schematic view of the principle of the gas generator system according to the present application;

[0021] In the figure: 1 - valve body, 1a - first input port, 1b - second input port, 2a - first output port, 2b - second output port, 11 - first cavity, 12 - second cavity, 13 - pressure cavity, 131 - oil injection port, 2 - valve core, 21 - first plug ring, 22 - second plug ring, 23 - limit rubber head, 24 - first limit groove, 3 - elastic member, 4 - valve cover, 41 - first valve cover, 42 - second valve cover, 421 - second limit groove, 5 - conduction loop, 6 - generator, 7 - engine, 8 - gas storage tank, 9 - gas supply pipeline, 10 - oil pump. DETAILED DESCRIPTION

[0022] For the convenience of those skilled in the art to understand, the following combining with the embodiment and the drawing of the utility model is further explained, the content mentioned in the implementation is not the limitation of the utility model. The utility model is described in detail below combining with the drawing.

[0023] Please refer to Figures 1-4 A specific implementation of a gas distribution valve, including valve core 2 and valve body 1, the inside of the valve body 1 is provided with first cavity 11 and second cavity 12, and the first cavity 11 and the second cavity 12 are in a conductive structure, the surface of the valve body 1 is provided with first input port 1a, second input port 1b, first output port 2a and second output port 2b, the first input port 1a and the first output port 2a are connected through the first cavity 11, the second input port 1b and the second output port 2b are connected through the second cavity 12, one end of the valve body 1 is provided with pressure cavity 13, and the pressure cavity 13 and the first cavity 11 are in a conductive structure.

[0024] The valve core 2 is arranged between the first cavity 11, the second cavity 12 and the pressure cavity 13, and the end of the valve core 2 away from the pressure cavity 13 is provided with an elastic member 3, the valve core 2 can be horizontally moved in the valve body 1 through the elastic member 3, the middle part of the valve core 2 is provided with outwardly protruding first blocking ring 21 and second blocking ring 22, the first blocking ring 21 is arranged between the pressure cavity 13 and the first cavity 11, the second blocking ring 22 is arranged between the first cavity 11 and the second cavity 12, and the first cavity 11 and the second output port 2b are provided with a conductive loop; when the valve core 2 moves to one side, the first blocking ring 21 and the second blocking ring 22 can abut at the first output port 2a and the second output port 2b respectively, and the first cavity 11 and the second output port 2b are connected through the conductive loop.

[0025] The oil pressure in the pressure cavity 13 is used to feedback the speed and torque change of the engine, and the movement amplitude of the valve core 2 in the valve body 1 is driven by the oil pressure, so as to adjust the gas flow ratio, wherein the pure mechanical structure replaces the electric control structure of the gas supply valve of the gas turbine unit, and the pure mechanical adjustment mode is used to control the gas flow.

[0026] Specifically, as shown in Figure 3 One side of the valve body 1 is provided with an oil inlet 131, and the oil inlet 131 is in conductive connection with the pressure cavity 13.

[0027] In further schemes, as Figure 3Also shown, further comprising valve cover 4, the valve cover 4 includes first valve cover 41 and second valve cover 4, first valve cover 41 is arranged in valve body 1 close to one end of pressure cavity 13, first valve cover 41 cover is set in one end of valve body 1 to form pressure cavity 13, second valve cover 4 is arranged in valve body 1 away from one end of pressure cavity 13, elastic element 3 is arranged between second valve cover 4 and valve core 2, one end of valve core 2 close to pressure cavity 13 is limit rubber head 23, limit rubber head 23 and the inner wall of first valve cover 41 abut limit, first limit groove 24 is arranged in one end of valve core 2 close to elastic element 3, and elastic element 3 is arranged with the inside of first limit groove 24.

[0028] Specifically, the elastic element 3 is composed of a spring, the inner wall of the second valve cover 4 is provided with a second limit groove matched with the first limit groove 24, and the two ends of the spring are fixedly connected in the first limit groove 24 and the second limit groove respectively.

[0029] When the oil pressure in the pressure cavity 13 is too large, the oil pressure can push the valve core 2 to move to one side of the elastic element 3, and the first blocking ring 21 and the second blocking ring 22 can be blocked to the first output port 2a and the second output port 2b respectively, so as to control the flow size of the gas. When the valve core 2 completely moves to one side of the elastic element 3, the first input port 1a, the first cavity 11 and the second output port 2b are connected in a conductive manner through the conductive circuit, so as to ensure the gas supply of the gas distribution valve.

[0030] Please refer to Figure 5 The specific implementation of a gas generator system, comprising a generator, a gas engine, a gas tank 8 and a gas supply pipeline 9, the rotating shaft of the gas engine is fixedly connected with the input shaft of the generator, the gas supply pipeline 9 is connected in a conductive manner with the gas engine through the above-mentioned gas distribution valve, the first input port 1a and the second input port 1b of the gas distribution valve are connected in a conductive manner with the gas tank 8, the first output port 2a and the second output port 2b of the gas distribution valve are connected in a conductive manner with the gas engine, the gas engine is further provided with an oil pump 10, the oil pump 10 is in transmission connection with the rotating shaft of the gas engine, and the oil outlet end of the oil pump 10 is connected in a conductive manner with the pressure cavity 13 of the gas distribution valve.

[0031] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application is disclosed as above in the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical scheme of the present application, and any equivalent embodiment with equivalent changes is equivalent to the above-mentioned technical content. Any simple modification, equivalent change and modification of the above-mentioned technical content are within the scope of the present application.

Claims

1. A gas distribution valve, characterized in that: include: A valve body, wherein a first cavity and a second cavity are provided inside the valve body, and a conductive structure is formed between the first cavity and the second cavity. A first input port, a second input port, a first output port, and a second output port are provided on the surface of the valve body. The first input port and the first output port are conductively connected via the first cavity, and the second input port and the second output port are conductively connected via the second cavity. A pressure cavity is provided at one end of the valve body, and a conductive structure is formed between the pressure cavity and the first cavity. A valve core is provided between the first cavity, the second cavity and the pressure cavity, and an elastic member is provided at one end of the valve core away from the pressure cavity. The valve core can move horizontally within the valve body through the elastic member. A first blocking ring and a second blocking ring protruding outward are provided in the middle of the valve core. The first blocking ring is provided between the pressure cavity and the first cavity, and the second blocking ring is provided between the first cavity and the second cavity. A conducting circuit is provided between the first cavity and the second output port. When the valve core moves to one side, the first blocking ring and the second blocking ring can respectively abut against the first output port and the second output port, and the first cavity and the second output port are conductively connected via the conductive loop.

2. The gas distribution valve according to claim 1, characterized in that: An oil filling port is provided on one side of the valve body, and the oil filling port is in conduction connection with the pressure cavity.

3. The gas distribution valve according to claim 1, characterized in that: It also includes a valve cover, which includes a first valve cover and a second valve cover. The first valve cover is arranged at one end of the valve body close to the pressure chamber. The first valve cover is arranged at one end of the valve body to form a pressure chamber. The second valve cover is arranged at one end of the valve body away from the pressure chamber. The elastic member is arranged between the second valve cover and the valve core.

4. The gas distribution valve according to claim 3, characterized in that: One end of the valve core close to the pressure chamber is a limiting rubber head, which abuts against the inner wall of the first valve cover for limiting position. One end of the valve core close to the elastic member is provided with a first limiting groove, and the elastic member is arranged inside the first limiting groove.

5. The gas distribution valve according to claim 4, characterized in that: The elastic member is composed of a spring, the inner wall of the second valve cover is provided with a second limiting groove matching the first limiting groove, and both ends of the spring are fixedly connected to the inside of the first limiting groove and the second limiting groove respectively.

6. A gas generator system, characterized in that: It includes a generator, an engine, a gas storage tank and a gas supply pipeline. The rotating shaft of the engine is fixedly connected to the input shaft of the generator. The gas supply pipeline is conductively connected to the engine through the gas distribution valve described in any one of claims 1 to 5. The first input port and the second input port of the gas distribution valve are conductively connected to the gas storage tank. The first output port and the second output port of the gas distribution valve are conductively connected to the engine. The engine is also provided with an oil pump, which is transmission-connected to the rotating shaft of the engine, and the oil delivery end of the oil pump is conductively connected to the pressure chamber of the gas distribution valve.

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