A manually controlled pressure system for a gas supply vehicle

Abstract

The application relates to a manual pressure control system of a gas source vehicle, which comprises a gas supply pipeline, a gas pressure adjusting mechanism and a pressure relief assembly, the pressure relief assembly being controlled by the gas pressure adjusting mechanism; the gas pressure adjusting mechanism comprises a front switch valve, an adjusting valve and a rear switch valve which are sequentially communicated; the front switch valve is communicated with a front interface h of the gas supply pipeline, and the rear switch valve is communicated with the pressure relief assembly; the pressure relief assembly comprises a pneumatic overflow valve, an air inlet switch valve and an air outlet switch valve, the pneumatic overflow valve is provided with a control end, an air inlet end and an air outlet end, the air inlet end of the pneumatic overflow valve is communicated with a rear interface g of the gas supply pipeline, the control end of the pneumatic overflow valve is communicated with an output end of the air inlet switch valve and an input end of the air outlet switch valve, and the output end of the air inlet switch valve is communicated with the rear switch valve. The manual control valve is reliable in operation, the pressure of the gas supply pipeline is used to assist the adjustment of the inverse proportional valve, and cost is saved.

Description

Technical Field

[0001] This application belongs to the technical field of pressure control systems, and relates to a manual pressure control system for an air supply vehicle. Background Technology

[0002] Aircraft air supply vehicles are devices that use a vehicle-mounted, water-cooled diesel engine to drive a dry screw compressor, generating powerful compressed air to assist in the ground starting of various aircraft. Typically, the air supply vehicle needs to output compressed gas at two different pressures for aircraft use: "air supply" and "air conditioning." Currently, air supply vehicles use electromagnetic regulating valves to control these two pressure levels. In certain specific locations, such as those with strong magnetic fields or high humidity that could affect the electrical circuits, manual control valves are used for more stable system operation. Summary of the Invention

[0003] The purpose of this application is to provide a manual pressure control system for a gas source vehicle that can solve the above-mentioned problems.

[0004] According to the technical solution provided in this application: a manual pressure control system for an air source vehicle includes an air supply pipeline, which is connected to an air pressure regulating mechanism and a pressure relief component. The pressure relief component is controlled by the air pressure regulating mechanism. The air pressure regulating mechanism includes a front switch valve, a regulating valve, and a rear switch valve connected in sequence. The front switch valve is connected to the front interface h of the air supply pipeline, and the rear switch valve is connected to the pressure relief component. The pressure relief component includes a pneumatic overflow valve, an intake switch valve, and an exhaust switch valve. The pneumatic overflow valve is provided with a control end, an intake end, and an exhaust end. The intake end of the pneumatic overflow valve is connected to the rear interface g of the air supply pipeline. The control end of the pneumatic overflow valve is connected to the output end of the intake switch valve and the input end of the exhaust switch valve. The output end of the intake switch valve is connected to the rear switch valve.

[0005] As a further improvement of this application, there are two sets of air pressure regulating mechanisms, which are connected in parallel between the air supply pipeline and the pressure relief assembly; namely, the first air pressure regulating mechanism and the second air pressure regulating mechanism.

[0006] As a further improvement of this application, in the first air pressure regulating mechanism, the front switch valve is a first front switch valve, the regulating valve is a first inverse proportional valve, and the rear switch valve is a first rear switch valve. The first inverse proportional valve is provided with an input end, an output end, a power end a, a power exhaust end b, and an adjusting rod e. The input end of the first front switch valve is connected to the front interface h of the air supply pipeline, the output end of the first front switch valve is connected to the input end of the first inverse proportional valve, the output end of the first inverse proportional valve is connected to the input end of the first rear switch valve, and the output end of the first rear switch valve is connected to the input end of the air switch valve. The front interface h of the air supply pipeline is connected to the power end a of the first inverse proportional valve.

[0007] As a further improvement of this application, in the second air pressure regulating mechanism, the front switch valve is a second front switch valve, the regulating valve is a second inverse proportional valve, and the rear switch valve is a second rear switch valve. The second inverse proportional valve is provided with an input end, an output end, a power end c, a power exhaust end d, and an adjusting rod f. The input end of the second front switch valve is connected to the front interface h of the air supply pipeline, the output end of the second front switch valve is connected to the input end of the second inverse proportional valve, the output end of the second inverse proportional valve is connected to the input end of the second rear switch valve, and the output end of the second rear switch valve is connected to the input end of the air switch valve. The front interface h of the air supply pipeline is connected to the power end c of the second inverse proportional valve.

[0008] As a further improvement to this application, a pressure gauge is installed on the pipeline connecting the gas supply pipeline to the gas pressure regulating mechanism.

[0009] As a further improvement to this application, the second front switching valve, the first front switching valve, the first rear switching valve, the second rear switching valve, the intake switching valve, and the exhaust ball valve are ball valves.

[0010] The positive and progressive effects of this application are as follows: The manually controlled valve in this application operates reliably, and the pressure of the gas supply pipeline is used to assist the adjustment of the inverse proportional valve, thus saving costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this application. Detailed Implementation

[0012] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0013] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0014] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0015] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.

[0016] like Figure 1 As shown, this application is a manual pressure control system for an air source vehicle, including an air supply pipeline 1, which is connected to an air pressure regulating mechanism and a pressure relief component, which is controlled by the air pressure regulating mechanism.

[0017] The air pressure regulating mechanism includes a front switch valve, a regulating valve, and a rear switch valve connected in sequence. The front switch valve is connected to the front interface h of the air supply pipeline 1, and the rear switch valve is connected to the pressure relief assembly.

[0018] The pressure relief assembly includes a pneumatic relief valve 11, an intake switch valve 9, and an exhaust switch valve 10. The pneumatic relief valve 11 is provided with a control end, an intake end, and an exhaust end 11-1. The intake end of the pneumatic relief valve 11 is connected to the rear interface g of the air supply pipeline 1. The control end of the pneumatic relief valve 11 is connected to the output end of the intake switch valve 9 and the input end of the exhaust switch valve 10. The output end of the intake switch valve 9 is connected to the rear switch valve.

[0019] The number of pressure regulating mechanisms is determined based on specific operating conditions. In this embodiment, the air supply pipeline 1 is required to provide compressed gas at two different pressures for the aircraft: "air source mode" and "air conditioning mode." Based on this requirement, this embodiment employs two sets of pressure regulating mechanisms connected in parallel between the air supply pipeline 1 and the pressure relief assembly. One set of pressure regulating mechanisms controls the pressure relief assembly to adjust the pressure of the air supply pipeline 1 to a suitable level for "air source mode"; this set of pressure regulating mechanisms is the first pressure regulating mechanism. The other set of pressure regulating mechanisms controls the pressure relief assembly to adjust the pressure of the air supply pipeline 1 to a suitable level for "air conditioning mode"; this set of pressure regulating mechanisms is the second pressure regulating mechanism.

[0020] In the first air pressure regulating mechanism, the front switch valve is the first front switch valve 4, the regulating valve is the first inverse proportional valve 5, and the rear switch valve is the first rear switch valve 6. The first inverse proportional valve 5 is equipped with an input end, an output end, a power end a, a power exhaust end b, and an adjusting rod e. The input end of the first front switch valve 4 is connected to the front interface h of the air supply pipeline 1, the output end of the first front switch valve 4 is connected to the input end of the first inverse proportional valve 5, the output end of the first inverse proportional valve 5 is connected to the input end of the first rear switch valve 6, and the output end of the first rear switch valve 6 is connected to the input end of the air switch valve 9. The front interface h of the air supply pipeline 1 is connected to the power end a of the first inverse proportional valve 5. After the gas from the air supply pipeline 1 is connected, the gas assists the operator to rotate the adjusting rod e to adjust the pressure at the output end of the first inverse proportional valve 5. Excess gas input from the power end a is discharged from the power exhaust end b.

[0021] In the second air pressure regulating mechanism, the front switch valve is the second front switch valve 3, the regulating valve is the second inverse proportional valve 7, and the rear switch valve is the second rear switch valve 8. The second inverse proportional valve 7 is equipped with an input end, an output end, a power end c, a power exhaust end d, and an adjusting rod f. The input end of the second front switch valve 3 is connected to the front interface h of the air supply pipeline 1, the output end of the second front switch valve 3 is connected to the input end of the second inverse proportional valve 7, the output end of the second inverse proportional valve 7 is connected to the input end of the second rear switch valve 8, and the output end of the second rear switch valve 8 is connected to the input end of the air switch valve 9. The front interface h of the air supply pipeline 1 is connected to the power end c of the second inverse proportional valve 7. After the gas from the air supply pipeline 1 is connected, the gas assists the operator to rotate the adjusting rod f to adjust the pressure at the output end of the second inverse proportional valve 7. Excess gas input from the power end c is discharged from the power exhaust end d.

[0022] In order to detect the pressure of the air pressure regulating mechanism, a pressure gauge 2 is installed on the pipeline connecting the air supply pipeline 1 to the air pressure regulating mechanism.

[0023] The second front switch valve 3, the first front switch valve 4, the first rear switch valve 6, the second rear switch valve 8, the intake switch valve 9, and the exhaust ball valve 10 are all ball valves.

[0024] The pneumatic relief valve 11 is manufactured by Wuxi Jingbang Fluid Control Technology Co., Ltd., and its specific model is YL125-6-Q.

[0025] Working principle: When the output state of the gas supply pipeline 1 is required to be "gas source mode", manually close the second front switch valve 3 and the second rear switch valve 8 in the first gas pressure regulating mechanism to prevent gas in the gas supply pipeline 1 from flowing through the second gas pressure regulating mechanism; and close the exhaust ball valve 10 to ensure the control accuracy of the pneumatic overflow valve 11. Open the first front switch valve 4, the first rear switch valve 6, and the intake switch valve 9 in the second air pressure regulating mechanism. Control gas is output from the front output interface h of the air supply pipeline 1 to the first front switch valve 4, the first inverse proportional valve 5, and after being pressure regulated by the first inverse proportional valve 5, it flows into the first rear switch valve 6, the intake switch valve 9, and the control end of the overflow valve 11. At the same time, gas enters the power end a of the first inverse proportional valve 5. After the gas is connected to the air supply pipeline 1, the gas-assisted operator rotates the adjusting rod e to adjust the pressure at the output end of the first inverse proportional valve 5. Excess gas input from the power end a is discharged from the power exhaust end b. At this time, the pressure gauge 2 displays the control pressure P1 here, and the valve plate of the overflow valve 11 opens to the corresponding height H1, so that the gas pressure flowing through the rear interface g of the air supply pipeline 1 is stabilized at the set "air source mode" pressure state.

[0026] When it is necessary to switch the output state of the gas supply pipeline 1 to "air conditioning mode", first close the intake switch valve 9 and open the exhaust switch valve 10 to vent the gas at the control end of the pneumatic overflow valve 11. Then, manually close the first front switch valve 4, the first rear switch valve 6, and the switch ball valve 10 in the first air pressure regulating mechanism, and open the second front switch valve 3, the second rear switch valve 8, and the intake switch valve 9 in the first air pressure regulating mechanism. Control the gas to be output from the front interface h of the gas pipeline 1 to the second front switch valve 3, the second inverse proportional valve 7, the second rear switch valve 8, the intake switch valve 9, and the overflow valve 11. At the same time, the gas enters the power end c of the second inverse proportional valve 7. After the gas is connected to the gas supply pipeline 1, the gas assists the operator to rotate the adjusting rod f to adjust the pressure at the output end of the second inverse proportional valve 7. The excess gas input from the power end c is discharged from the power exhaust end d. At this time, the pressure gauge 2 displays the control pressure P2 here, and the valve plate of the overflow valve 11 opens to the height H2 accordingly, so that the system pressure is stabilized at the set gas source regulating pressure state. The gas pressure flowing through the rear interface g of the gas supply pipe 1 is stabilized at the set "air conditioning mode" pressure state.

[0027] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this application, and this application is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this application, and these modifications and improvements are also considered to be within the scope of protection of this application.

Claims

1. A manual pressure control system for a gas source vehicle, characterized in that, It includes a gas supply pipeline (1), which is connected to a pressure regulating mechanism and a pressure relief assembly. The pressure relief assembly is controlled by the pressure regulating mechanism. The pressure regulating mechanism includes a front switch valve, a regulating valve, and a rear switch valve connected in sequence. The front switch valve is connected to the front interface h of the gas supply pipeline (1), and the rear switch valve is connected to the pressure relief assembly. The pressure relief assembly includes a pneumatic overflow valve (11), an inlet switch valve (9), and an exhaust switch valve (10). The pneumatic overflow valve (11) is provided with a control end, an inlet end, and an exhaust end (11-1). The inlet end of the pneumatic overflow valve (11) is connected to the rear interface g of the gas supply pipeline (1). The control end of the pneumatic overflow valve (11) is connected to the output end of the inlet switch valve (9) and the input end of the exhaust switch valve (10). The output end of the inlet switch valve (9) is connected to the rear switch valve.

2. The manual pressure control system for the gas source vehicle as described in claim 1, characterized in that, There are two sets of air pressure regulating mechanisms, which are connected in parallel between the air supply pipeline (1) and the pressure relief assembly; namely, the first air pressure regulating mechanism and the second air pressure regulating mechanism.

3. The manual pressure control system for the gas source vehicle as described in claim 2, characterized in that, In the first air pressure regulating mechanism, the front switch valve is the first front switch valve (4), the regulating valve is the first inverse proportional valve (5), and the rear switch valve is the first rear switch valve (6). The first inverse proportional valve (5) is provided with an input end, an output end, a power end a, a power exhaust end b, and an adjusting rod e. The input end of the first front switch valve (4) is connected to the front interface h of the air supply pipeline (1), the output end of the first front switch valve (4) is connected to the input end of the first inverse proportional valve (5), the output end of the first inverse proportional valve (5) is connected to the input end of the first rear switch valve (6), and the output end of the first rear switch valve (6) is connected to the input end of the air switch valve (9). The front interface h of the air supply pipeline (1) is connected to the power end a of the first inverse proportional valve (5).

4. The manual pressure control system for the gas source vehicle as described in claim 2, characterized in that, In the second air pressure regulating mechanism, the front switch valve is the second front switch valve (3), the regulating valve is the second inverse proportional valve (7), and the rear switch valve is the second rear switch valve (8). The second inverse proportional valve (7) is provided with an input end, an output end, a power end c, a power exhaust end d, and an adjusting rod f. The input end of the second front switch valve (3) is connected to the front interface h of the air supply pipeline (1), the output end of the second front switch valve (3) is connected to the input end of the second inverse proportional valve (7), the output end of the second inverse proportional valve (7) is connected to the input end of the second rear switch valve (8), and the output end of the second rear switch valve (8) is connected to the input end of the air switch valve (9). The front interface h of the air supply pipeline (1) is connected to the power end c of the second inverse proportional valve (7).

5. The manual pressure control system for the gas source vehicle as described in claim 1, characterized in that, A pressure gauge (2) is installed on the gas supply pipeline (1) that connects to the gas pressure regulating mechanism.

6. The manual pressure control system for the gas source vehicle as described in claim 1, characterized in that, The second front switch valve (3), the first front switch valve (4), the first rear switch valve (6), the second rear switch valve (8), the intake switch valve (9), and the exhaust ball valve (10) are all ball valves.

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