Self-air-supply type emergency cut-off device control system for oxygenating vehicle

Abstract

The utility model belongs to the technical field of aircraft oxygenation equipment, and relates to a self-air-supply emergency cut-off device control system for an oxygenation vehicle, which comprises an automobile chassis mounted on the oxygenation vehicle provided with a carriage, and is characterized in that an air compressor and an air storage tank are mounted on the bottom surface of the automobile chassis; the air outlet end of the air compressor is connected with the air inlet end of the air storage tank through a connecting pipeline; an oxygenating vehicle main engine is installed in a compartment, an inlet of the oxygenating vehicle main engine is connected with a first control gas circuit connecting pipeline, a first gas circuit stop valve is installed on the first control gas circuit connecting pipeline, an outlet of the oxygenating vehicle main engine is connected with a second control gas circuit connecting pipeline, and a second gas circuit stop valve is installed on the second control gas circuit connecting pipeline. The air outlet end of the air storage tank is connected with a driving air source connecting pipe, and the other end of the driving air source connecting pipe is connected to the second air path stop valve. According to the emergency cut-off device control system, the running safety, the use and maintenance convenience and the reliability of the oxygenating vehicle can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft oxygenation equipment and relates to a self-supply air emergency cut-off device control system for an oxygenation vehicle. Background Art

[0002] The oxygenation vehicle is a mobile aviation equipment for filling aircraft with high-pressure oxygen. It is mainly composed of a vehicle chassis, an oxygenation vehicle host, a gas cylinder group and an operation control cabinet. Generally, the compressor host and the gas cylinder group are respectively arranged in different compartments, separated by a partition in the middle. When working, the oxygen in the gas cylinder group is controlled by the operation control cabinet, and after being pressurized by the oxygenation vehicle host, it becomes high-pressure oxygen and is filled into the aircraft. Because oxygen has the characteristic of supporting combustion, it is easy to burn and explode under certain temperature and pressure. Therefore, in the event of an emergency, it is particularly important to be able to cut off the oxygen connection pipeline between the host and the gas cylinder group in time to quickly cut off the oxygen leakage.

[0003] Most of the existing oxygenation vehicles are not equipped with emergency shutoff devices for oxygen pipelines. A small number of oxygenation vehicles are equipped with emergency shutoff devices, but most of them are controlled by ordinary solenoid valves, which pose safety hazards in the oxygen use environment, are prone to failure, and are unreliable.

[0004] Some oxygenation vehicles also use pneumatic stop valves to cut off the oxygen connection pipeline. That is, in an emergency, the pneumatic stop valve is driven by releasing the driving gas source to close the pneumatic stop valve and cut off the oxygen connection pipeline. This structure of the pneumatic stop valve requires a small driving gas source gas cylinder in the oxygenation vehicle cabin. Every time the oxygenation vehicle is working, it is necessary to open the gas cylinder valve of the driving gas source gas cylinder to put the entire emergency stop device in a waiting state. After the oxygenation vehicle stops working, the gas cylinder valve of the driving gas cylinder is closed, and the gas cylinder needs to be regularly refilled. Therefore, this device control system is inconvenient in use and maintenance. Summary of the invention

[0005] In view of the above problems, the utility model provides a self-supply air emergency cut-off device control system for an oxygenation vehicle, which can improve the safety of the operation of the oxygenation vehicle, the convenience of use and maintenance, and the reliability.

[0006] According to the technical solution of the utility model: a self-supply air emergency cut-off device control system for an oxygenation vehicle comprises a vehicle chassis installed on the oxygenation vehicle, the oxygenation vehicle is provided with a carriage, and is characterized in that: an air compressor and an air storage tank are installed on the bottom surface of the vehicle chassis, and the air outlet end of the air compressor is connected to the air inlet end of the air storage tank through a connecting pipe;

[0007] An oxygenation vehicle main unit is installed in the compartment, an inlet of the oxygenation vehicle main unit is connected to a first control gas circuit connecting pipeline, a first gas circuit shut-off valve is installed on the first control gas circuit connecting pipeline, an outlet of the oxygenation vehicle main unit is connected to a second control gas circuit connecting pipeline, and a second gas circuit shut-off valve is installed on the second control gas circuit connecting pipeline;

[0008] The gas outlet end of the gas storage tank is connected to the driving gas source connecting pipe, the other end of the driving gas source connecting pipe is connected to the second gas circuit shut-off valve, a solenoid valve is installed on the driving gas source connecting pipe, the solenoid valve is connected in parallel with the manual shut-off valve, and the first gas circuit shut-off valve is connected to the driving gas source connecting pipe through an air pipe;

[0009] The solenoid valve is connected to the main unit of the oxygenation vehicle via a solenoid valve connecting cable, and the air compressor is connected to the main unit of the oxygenation vehicle via an air compressor data connecting cable.

[0010] As a further improvement of the utility model, an air-water separator, a safety valve and a pressure gauge are installed on the connecting pipe between the air compressor and the air storage tank, and the air-water separator, safety valve and pressure gauge are arranged in sequence from the air compressor to the air storage tank.

[0011] As a further improvement of the utility model, a filter is also installed on the driving air source connecting pipe.

[0012] The technical effect of the utility model is that the control system of the utility model is provided with an independent self-supply air control system, which can provide dry and clean compressed air, ensuring that in an emergency, the pneumatic stop valve can be driven to work normally without the need for an external gas source cylinder, thereby eliminating the hassle of frequent replenishment of compressed air and greatly reducing the labor intensity of the staff.

[0013] The control system of the utility model is provided with a filter and an air-water separator, and the compressed air provided is cleaner and drier, and can ensure that the pneumatic stop valve works more reliably and has a longer service life.

[0014] The control system of the utility model is equipped with a pressure controller and is provided with a safety valve, a pressure gauge and other devices, which can display the system pressure in real time. When the pressure in the system pipeline is lower than the working pressure of the emergency stop valve, the air compressor can automatically load. When the system pressure reaches the working pressure of the emergency stop valve, it can automatically unload and control the air compressor to stop. When the system is over-pressured, the safety valve can automatically open to release the over-pressure gas to prevent the entire device system from being damaged. It has high safety and high degree of automation.

[0015] All control valves and actuators in the control system of the utility model are arranged outside the main engine room of the compressor. When a fire or other accident occurs in the main engine, they are not affected by it and can act in time to cut off the oxygen pipeline connected to the main engine to prevent the accident from further expanding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the process of the utility model. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 , 2 The oxygenation vehicle comprises an air compressor 1, a solenoid valve connecting cable 2, a gas-water separator 3, a manual shut-off valve 4, a filter 5, a pressure gauge 6, an air storage tank 7, a solenoid valve 8, a safety valve 9, a driving air source connecting pipe 10, a first gas circuit stop valve 11, a second gas circuit stop valve 12, an air compressor data connecting cable 13, a carriage 14, an oxygenation vehicle host 15, a first control gas circuit connecting pipeline 16, a second control gas circuit connecting pipeline 17, a chassis 18, a host cabin 19, a cabin partition wall 20, etc.

[0020] like Figure 1 , 2 As shown, the utility model is a self-supplied air emergency cut-off device control system for an oxygenating vehicle, comprising a vehicle chassis 18 mounted on the oxygenating vehicle, the oxygenating vehicle being provided with a carriage 14, characterized in that an air compressor 1 and an air storage tank 7 are mounted on the bottom surface of the vehicle chassis 18, and the air outlet end of the air compressor 1 is connected to the air inlet end of the air storage tank 7 via a connecting pipe.

[0021] The oxygenation vehicle main unit 15 is installed in the carriage 14, the inlet of the oxygenation vehicle main unit 15 is connected to the first control gas circuit connecting pipeline 16, the first control gas circuit connecting pipeline 16 is installed with the first gas circuit stop valve 11, the outlet of the oxygenation vehicle main unit 15 is connected to the second control gas circuit connecting pipeline 17, the second control gas circuit connecting pipeline 17 is installed with the second gas circuit stop valve 12. It can be understood that the carriage 14 is separated from the main unit cabin 19 by the cabin partition wall 20, and the oxygenation vehicle main unit 15 is installed in the main unit cabin 19.

[0022] The gas outlet end of the gas storage tank 7 is connected to the driving gas source connecting pipe 10, the other end of the driving gas source connecting pipe 10 is connected to the second gas circuit shut-off valve 12, the solenoid valve 8 is installed on the driving gas source connecting pipe 10, the solenoid valve 8 is connected in parallel with the manual shut-off valve 4, and the first gas circuit shut-off valve 11 is connected to the driving gas source connecting pipe 10 through an air pipe.

[0023] The solenoid valve 8 is connected to the oxygenation vehicle host 15 via a solenoid valve connection cable 2 , and the air compressor 1 is connected to the oxygenation vehicle host 15 via an air compressor data connection cable 13 .

[0024] An air-water separator 3, a safety valve 9 and a pressure gauge 6 are installed on the connecting pipe between the air compressor 1 and the air storage tank 7, and the air-water separator 3, the safety valve 9 and the pressure gauge 6 are arranged in sequence from the air compressor 1 to the air storage tank 7 side.

[0025] A filter 5 is also installed on the driving gas source connecting pipe 10. It is understandable that, in specific use, the first gas circuit stop valve 11 and the second gas circuit stop valve 12 are both arranged outside the main engine room 19.

[0026] like Figure 1 , 2 As shown, when the utility model is working, the oxygenation vehicle host 15 is started, the air compressor 1 transmits data through the air compressor data connection cable 13, and will automatically start to run, the air compressor 1 performs self-checking, and the pressure controller control of the air compressor 1 will detect the pipeline pressure in the entire system. When the pressure in the system pipeline is lower than the working pressure of the emergency stop valve, the air compressor 1 can automatically load, and when the system pressure reaches the working pressure of the emergency stop valve, the system can automatically unload and control the air compressor to be in standby state.

[0027] When a fire or other accident occurs during the operation of the oxygenation vehicle, the manual shut-off valve 4 can be manually operated. At this time, the compressed air in the gas storage tank 7 enters the working chamber of the first gas circuit shut-off valve 11 and the second gas circuit shut-off valve 12 through the transmission of the driving gas source connecting pipe 10, driving the shut-off valve to close, and cutting off the working main pipeline channel of the oxygenation vehicle main engine.

[0028] When a fire or other accident occurs during the operation of the oxygenation vehicle, the solenoid valve 8 (automatic shut-off valve) receives the alarm signal fed back from the oxygenation vehicle host through the solenoid valve connecting cable 2, and switches from the original normally closed state to the open state. At this time, the compressed air in the gas storage tank 7 enters the working chamber of the first gas circuit shut-off valve 11 and the second gas circuit shut-off valve 12 through the transmission of the driving gas source connecting pipe 10, driving the shut-off valve to close, and cutting off the working main circuit channel of the oxygenation vehicle host.

[0029] The solenoid valve 8 can also be operated manually. At this time, the compressed air in the gas storage tank 7 enters the working chambers of the first gas circuit stop valve 11 and the second gas circuit stop valve 12 through the transmission of the driving gas source connecting pipe 10, driving the stop valve to close, and cutting off the working main circuit channel of the oxygenation vehicle main engine.

[0030] The system is provided with a safety valve 9, which opens to discharge the overpressure gas when the system pressure exceeds the preset value, ensuring that the system pressure is maintained within a reasonable range.

[0031] The system is provided with a pressure gauge 6, the setting of which is convenient for reading the gas pressure and monitoring the system pressure in real time.

[0032] The system is provided with a filter 5 and an air-water separator 3, which can ensure that the driving air source entering the working chamber of the pneumatic stop valve is cleaner and drier, and can ensure that the pneumatic stop valve works more reliably and prolong its service life.

[0033] The air compressor 1, the gas storage tank 7, the solenoid valve 8 and the manual shut-off valve 4 in the utility model are all arranged below the chassis 18 and outside the main engine compartment 19, because the operating environment of the oxygenation vehicle main engine 15 requires absolute prohibition of oil and fire. If grease and sparks are encountered, fire and explosion accidents will occur. The setting of this system will prevent such accidents from happening.

Claims

1. A self-supply air emergency cut-off device control system for an oxygenation vehicle, comprising a vehicle chassis (18) mounted on the oxygenation vehicle, the oxygenation vehicle being provided with a carriage (14), characterized in that: An air compressor (1) and an air storage tank (7) are installed on the bottom surface of the automobile chassis (18), and an air outlet end of the air compressor (1) and an air inlet end of the air storage tank (7) are connected via a connecting pipe; An oxygenation vehicle main unit (15) is installed in the carriage (14); an inlet of the oxygenation vehicle main unit (15) is connected to a first control gas circuit connecting pipeline (16); a first gas circuit stop valve (11) is installed on the first control gas circuit connecting pipeline (16); an outlet of the oxygenation vehicle main unit (15) is connected to a second control gas circuit connecting pipeline (17); a second gas circuit stop valve (12) is installed on the second control gas circuit connecting pipeline (17); The gas outlet end of the gas storage tank (7) is connected to the driving gas source connecting pipe (10), the other end of the driving gas source connecting pipe (10) is connected to the second gas circuit stop valve (12), a solenoid valve (8) is installed on the driving gas source connecting pipe (10), the solenoid valve (8) is connected in parallel with the manual shut-off valve (4), and the first gas circuit stop valve (11) is connected to the driving gas source connecting pipe (10) via an air pipe; The solenoid valve (8) is connected to the oxygenation vehicle host (15) via a solenoid valve connection cable (2), and the air compressor (1) is connected to the oxygenation vehicle host (15) via an air compressor data connection cable (13).

2. The self-supplied air emergency cut-off device control system for oxygen-filled vehicles according to claim 1, characterized in that: An air-water separator (3), a safety valve (9), and a pressure gauge (6) are installed on the connecting pipe between the air compressor (1) and the air storage tank (7), and the air-water separator (3), the safety valve (9), and the pressure gauge (6) are arranged in sequence from the air compressor (1) toward the air storage tank (7).

3. The self-supplied air emergency cut-off device control system for oxygen-filled vehicles according to claim 1, characterized in that: A filter (5) is also installed on the driving air source connecting pipe (10).

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