CN219493837U - Mobile aviation equipment is with supplying nitrogen device - Google Patents

Abstract

The utility model discloses a nitrogen supply device for mobile aviation equipment, and belongs to the technical field of nitrogen charging devices. The device consists of a cabin body, and an air driving air circuit, a pre-increasing air circuit, a pressurizing air circuit and a depressurizing output air circuit which are arranged in the cabin body, wherein the air driving air circuit comprises an air compressor, the pressurizing air circuit comprises a pneumatic reversing valve and a pressurizing pump, and the depressurizing output air circuit comprises a depressurizing device; the air compressed by the air compressor provides driving air for the booster pump through the pneumatic reversing valve, nitrogen entering from the pre-increasing air channel enters the decompression output air channel after being pressurized by the booster pump, and is decompressed to a set value through the decompressing device and then is output. The pressurizing power of the nitrogen supply device for the mobile aviation equipment provided by the utility model comes from a common air compressor which can only generate low pressure, the nitrogen pressurizing power source is easy to obtain, and the neutral position of the pneumatic reversing valve can be communicated with the air high-pressure cavity and the air low-pressure cavity of the pressurizing pump, so that the energy-saving effect is achieved.

Description

Mobile aviation equipment is with supplying nitrogen device

Technical Field

The utility model belongs to the technical field of nitrogen filling, and particularly relates to a nitrogen supply device for mobile aviation equipment.

Background

Along with the development of industrial production technology, various production environments need to be applied to special gases for working, nitrogen is the most in the atmosphere, and the nitrogen is inactive in chemical property and high in stability, so that the nitrogen is widely applied to industrial production and life, particularly aerospace, and high-pressure nitrogen is a main power source of an aviation equipment internal field tester, a transmitting frame internal field tester and an aviation equipment internal field tester calibrator, and is high in use demand and frequency. Because the high-pressure container is needed for storing nitrogen, the nitrogen charging operation is inconvenient, the nitrogen charging operation is complicated particularly when the nitrogen charging operation is carried out on an aerospace device, the conventional nitrogen charging equipment is large in general volume and weight, the nitrogen charging equipment is inconvenient to move when carrying out a outfield test, the nitrogen charging equipment is complex in general structure, a nitrogen output port is single, and the nitrogen charging operation cannot be carried out on a plurality of products, so that the working efficiency is low.

Therefore, the nitrogen supply device is needed, the nitrogen pressurization power source is easy to obtain, the pressurized nitrogen can be depressurized to a set value according to the requirement and then output from the corresponding nitrogen output port, and the nitrogen supply device has a certain energy-saving effect.

Disclosure of Invention

Aiming at the defects existing in the related art, the utility model aims to provide a nitrogen supply device for mobile aviation equipment, wherein the pressurizing power of the nitrogen supply device is from a common air compressor which can only generate low pressure, and the neutral position of a pneumatic reversing valve can be communicated with an air high-pressure cavity and a low-pressure cavity of a booster pump, so that the nitrogen supply device has an energy-saving effect, and the problems in the background art are solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a mobile nitrogen supply apparatus for an aircraft device, comprising:

the air driving air circuit comprises an air compressor and is used for providing compressed air, and the air driving air circuit is provided with a first air outlet passage and a second air outlet passage which are respectively communicated with the air compressor;

the pre-increase gas path is used for conveying nitrogen, and is provided with a nitrogen input port and a third air outlet passage;

the supercharging air circuit is provided with a supercharging pump, a pneumatic reversing valve, a first air inlet passage, a second air inlet passage, a third air inlet passage and a fourth air outlet passage; the pneumatic reversing valve is communicated with the air high-pressure cavity and the low-pressure cavity of the booster pump through pipelines; the first air inlet passage is communicated with the first air outlet passage, the second air inlet passage is communicated with the second air outlet passage, and the third air inlet passage is communicated with the third air outlet passage; the air in the first air inlet passage is used for providing driving air for the booster pump, and the air in the second air inlet passage is used for controlling the opening and closing of the pneumatic reversing valve; the booster pump is used for boosting nitrogen;

the decompression output gas circuit is provided with a decompression device, a fourth air inlet passage and a nitrogen output port, the fourth air inlet passage is communicated with the fourth air outlet passage, and the decompression device is connected between the fourth air inlet passage and the nitrogen output port and used for decompressing high-pressure nitrogen to a set value.

In some embodiments, the pressurizing air channel further comprises a buffer hose, a pressurizing air channel safety valve, a pressurizing air channel one-way valve, a pressurizing air channel dryer, a pipeline temperature sensor, a pressurizing air channel filter, a second pressure relay and a pressurizing air channel switch which are sequentially connected between an air outlet of the pressurizing air channel and the fourth air outlet channel through pipelines; the pressurizing air circuit further comprises a pressurizing air circuit electromagnetic valve, a pressurizing air circuit pressure gauge and a first pressure relay which are sequentially connected between the third air inlet passage and the air inlet of the booster pump through pipelines; a first booster pump check valve is arranged at the air inlet of the booster pump, and a second booster pump check valve is arranged at the air outlet of the booster pump; a first gas storage bottle and a second gas storage bottle which are connected through a pipeline are arranged between the pressurizing gas circuit electromagnetic valve and the second pressure relay; the first gas cylinder and the second gas cylinder are respectively provided with a first gas cylinder valve and a second gas cylinder valve, and a switching valve is arranged between the first gas cylinder and the second gas cylinder and is used for switching a gas storage station and a pressurizing station.

In some embodiments, the nitrogen supply device for the mobile aviation device further comprises a cabin body, wherein the air driving air channel, the pre-increasing air channel, the pressurizing air channel and the depressurizing output air channel are all arranged in the cabin body, and a control panel and a power interface panel are arranged on the cabin body.

In some embodiments, the pressure reducing output gas circuit further comprises a dew point testing pressure reducer, a dew point testing switch, a first dew point testing electromagnetic valve, a dew point transmitter, a second dew point testing electromagnetic valve and a dew point on-line testing port which are sequentially connected through pipelines, wherein the dew point on-line testing pressure reducer, the dew point testing switch, the first dew point testing electromagnetic valve, the dew point transmitter, the second dew point testing electromagnetic valve and the dew point on-line testing port are used for dew point on-line testing, and the dew point on-line testing port is arranged on the control panel.

In some embodiments, the pre-increase gas circuit further comprises a reversing valve, a first pre-increase gas circuit check valve, a pre-increase gas circuit dryer, a pre-increase gas circuit filter and a second pre-increase gas circuit check valve which are sequentially connected between the nitrogen input port and the third gas outlet passage through pipelines; the pre-increase air path further comprises a dew point inspection port, a first dew point inspection control valve and a second dew point inspection control valve which are arranged on the control panel; the first dew point inspection control valve is connected in parallel with the second dew point inspection control valve, the first dew point inspection control valve is connected between the reversing valve and the first pre-increase air passage check valve through a pipeline, and the second dew point inspection control valve is connected between the pre-increase air passage dryer and the pre-increase air passage filter through a pipeline.

In some embodiments, the cabin is provided with a traction rod and a hand brake, the traction rod is used for hanging and dragging equipment, and one end provided with the traction rod is the front part of the cabin.

In some embodiments, the air compressor is arranged at the front part of the cabin body, and the display screen observation door of the air compressor is arranged at the front part of the cabin body and is used for observing and operating the display screen of the air compressor; an air compressor exhaust door is arranged at the upper part of the cabin body.

In some of these embodiments, the air-driven air circuit further comprises an oil removal filter, a driving air circuit pressure gauge, a driving air circuit pressure reducer, and a pilot air solenoid valve; the driving gas circuit pressure reducer is arranged on the first gas outlet passage, and the pilot gas electromagnetic valve is arranged on the second gas outlet passage; the oil removal filter and the driving gas circuit pressure gauge are sequentially arranged on a pipeline which is communicated with the air compressor, the first gas outlet passage and the second gas outlet passage.

In some embodiments, the pressure reducing output gas circuit further comprises an output gas circuit safety valve, an output gas circuit pressure gauge and a needle valve, wherein the output gas circuit safety valve, the output gas circuit pressure gauge and the needle valve are sequentially connected between the pressure reducer and the nitrogen output port through pipelines, the output gas circuit safety valve is used for overpressure protection of the pipelines, the output gas circuit pressure gauge is used for displaying pressure values of the pipelines, and the needle valve is used for output control and flow adjustment of nitrogen.

In some embodiments, the nitrogen supply device for the mobile aviation device further comprises a system pressure relief output air channel, wherein the system pressure relief output air channel is connected with the pressure relief output air channel in parallel, and the system pressure relief output air channel is provided with a system pressure relief switch and a system pressure relief output port.

Compared with the prior art, the utility model has the beneficial effects that:

1. the pressurizing power of the nitrogen supply device for the mobile aviation equipment provided by the utility model comes from the common air compressor which can only generate low pressure, the nitrogen pressurizing power source is easy to obtain, high-pressure nitrogen can be generated by pressurizing nitrogen through the common air compressor and the booster pump, and the neutral position of the pneumatic reversing valve can be communicated with the air high-pressure cavity and the low-pressure cavity of the booster pump, so that the energy-saving effect is realized;

2. according to the nitrogen supply device for the mobile aviation equipment, the pressure reduction output gas circuit is provided with the pressure reducer, so that nitrogen can be reduced to a set value according to requirements and then output;

3. according to the nitrogen supply device for the mobile aviation equipment, the dew point on-line test branch is arranged on the decompression output gas circuit, so that the dew point can be measured, the water vapor content of nitrogen is ensured, and the stability of the nitrogen in the use process is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic view showing the overall structure of an embodiment of a nitrogen supply apparatus for mobile aviation equipment according to the present utility model;

FIG. 2 is a schematic diagram of a left side layout of an embodiment of a nitrogen supply apparatus for mobile aircraft equipment according to the present utility model;

FIG. 3 is a schematic view of the first inflatable panel of FIG. 2;

FIG. 4 is a schematic view of the second inflatable panel of FIG. 2;

FIG. 5 is a schematic view of the rear layout of an embodiment of a nitrogen supply apparatus for mobile aircraft equipment according to the present utility model;

FIG. 6 is a schematic view of the main operation panel of FIG. 5;

FIG. 7 is a schematic view of a right side layout of an embodiment of a nitrogen supply apparatus for mobile aircraft equipment according to the present utility model;

FIG. 8 is a schematic diagram of the connection of the gas paths of one embodiment of the nitrogen supply device for mobile aviation equipment according to the present utility model;

FIG. 9 is a schematic view of an air-driven air circuit of one embodiment of a nitrogen supply apparatus for mobile aircraft equipment according to the present utility model;

FIG. 10 is a schematic view of a pre-air circuit of one embodiment of a nitrogen supply apparatus for mobile aircraft equipment according to the present utility model;

FIG. 11 is a schematic view of a pressurized gas circuit of one embodiment of a nitrogen supply apparatus for mobile aircraft equipment according to the present utility model;

FIG. 12 is a schematic view of a reduced pressure output gas circuit of one embodiment of a nitrogen supply apparatus for mobile aircraft equipment according to the present utility model.

In the figure:

1. a cabin body; 2. a control panel; 201. a first inflatable panel; 202. a second inflatable panel; 203. a main operation panel; 231. the gas path observation area; 232. a control area; 233. a dew point test zone; 3. a power interface panel; 4. an air-driven air path; 5. pre-increasing an air path; 6. a pressurizing air path; 7. a decompression output gas circuit; 8. an air compressor; 81. the display screen of the air compressor observes the door; 82. an air compressor exhaust port door; 9. a booster pump; 10. a traction rod; 11. a hand brake; 12. a deoiling filter; 13. driving a gas circuit pressure gauge; 14. driving the gas circuit pressure reducer; 15. a pilot gas solenoid valve; 16. pre-adding a gas circuit filter; 17. a pneumatic reversing valve; 18. a pressurized gas circuit safety valve; 19. a buffer hose; 20. a pressurized gas circuit filter; 21. a first pressure relay; 22. a second pressure relay; 23. a pressurized gas circuit pressure gauge; 24. a pipe temperature sensor; 25. a first gas cylinder; 250. a first cylinder valve; 26. a second gas cylinder; 260. a second cylinder valve; 27. a switching valve; 28. a dew point testing pressure reducer; 29. a dew point test switch; 30. a first dew point testing solenoid valve; 31. a dew point transmitter; 32. a second dew point testing solenoid valve; 33. a dew point on-line test port; 34. a first pre-air passage check valve; 35. a pre-air channel dryer; 36. a second pre-air passage check valve; 37. a dew point inspection port; 38. a first dew point check control valve; 39. a second dew point check control valve; 40. a pressurized gas circuit check valve; 41. a pressurized gas circuit dryer; 42. a boost air circuit switch; 43. a pressurizing gas circuit electromagnetic valve; 44. a first booster pump check valve; 45. a second booster pump check valve; 46. a system pressure release switch; 47. a system pressure release output port; 48. a first nitrogen inlet; 481. a first manual reversing valve; 49. a second nitrogen inlet; 491. a second manual reversing valve; 50. a first pressure reducer; 51. a first safety valve; 52. a first pressure gauge; 53. a first needle valve; 54. a first nitrogen outlet; 55. a second pressure reducer; 56. a second safety valve; 57 a second pressure gauge; 58. a second needle valve; 59. a fifth pressure gauge; 60. a second nitrogen outlet; 61. a third nitrogen outlet; 62. a third needle valve; 63. a fourth needle valve; 64. a fifth needle valve; 65. a fourth nitrogen outlet; 66. a third pressure reducer; 67. a third safety valve; 68. a third pressure gauge; 69. a sixth needle valve; 70. a sixth pressure gauge; 71. a fifth nitrogen outlet; 72. a sixth nitrogen outlet; 73. a seventh needle valve; 74. an eighth needle valve; 75. a fourth pressure gauge; 76. a ninth needle valve; 77. a seventh nitrogen outlet; 78. a control box; 79. an air heater; 80. a fixing pin.

Detailed Description

The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 12, there is shown an exemplary embodiment of a nitrogen supply apparatus for mobile aviation equipment according to the present utility model, which includes a cabin 1, an air driving air path 4, a pre-increase air path 5, a pressurizing air path 6, and a depressurizing output air path 7.

Referring to fig. 1, 2, 5-7, the cabin 1 is provided with a control panel 2, a power interface panel 3 and a control box 78; the cabin body 1 is provided with a traction rod 10 and a hand brake 11, the traction rod 10 is used for hanging and dragging equipment, the traction rod 10 is provided with a fixing pin 80, daily retraction is facilitated, the hand brake 11 is arranged at the bottom of the cabin body 1 and used for locking wheels arranged at the bottom of the cabin body 1 when the cabin body 1 is parked, the device is prevented from moving in the working process, the hand brake 11 is in a travelling state when pulled up, the hand brake 11 is put down into a parking state, and one end provided with the traction rod 10 is the front part of the cabin body 1. The control panel 2 comprises a first inflatable panel 201, a second inflatable panel 202 and a main operation panel 203, wherein the first inflatable panel 201 and the second inflatable panel 202 are arranged on the left side of the cabin body 1, and the main operation panel 203 is arranged on the rear part of the cabin body 1; the main operation panel 203 comprises a gas path observation area 231, a control area 232 and a dew point test area 233; the area division of the control panel 2 can effectively improve the operation management efficiency of operators; the control box 78 is integrated with various electrical components and circuits and is controlled by the control area 232; the inner top of the left side of the cabin body 1 is provided with an accessory box for storing accessories and tools such as an inflation tool, a metal hose, a bottle filling connector and the like; an air heater 79 is arranged in the rear part of the cabin body 1 and used for heating the cabin in a low-temperature environment, and an air quantity and heat quantity selecting switch is arranged at the top of the air heater 9.

Referring to fig. 1, 11 and 8, an air driving air path 4, a pre-increasing air path 5, a pressurizing air path 6 and a depressurizing output air path 7 are all arranged in the cabin body 1, the air driving air path 4 is provided with a first air outlet path and a second air outlet path, the pre-increasing air path 5 is provided with a third air outlet path, the pressurizing air path 6 is provided with a first air inlet path, a second air inlet path, a third air inlet path and a fourth air outlet path, and the depressurizing output air path 7 is provided with a fourth air inlet path; the first air inlet passage is communicated with the first air outlet passage, and air in the air passage is used for providing driving air for the booster pump 9; the second air inlet passage is communicated with the second air outlet passage, and the air in the air passage is used for controlling the opening and closing of the pneumatic reversing valve 17; the third air inlet passage is communicated with the third air outlet passage, and the air passage is used for conveying nitrogen to the first air storage bottle 25 and providing pre-pressurized nitrogen for the booster pump 9; the fourth air inlet passage is communicated with the fourth air outlet passage and is used for conveying the pressurized nitrogen to the decompression output air passage 7; the design of each air passage and the connection relation between the air passages are simple and reasonable.

Referring to fig. 1 and 9, the air driving air path 4 is provided with an air compressor 8, an oil removing filter 12, a driving air path pressure gauge 13, a driving air path pressure reducer 14 and a pilot air solenoid valve 15; the driving gas circuit pressure reducer 14 is connected in parallel with the pilot gas electromagnetic valve 15, the driving gas circuit pressure reducer 14 is arranged on the first gas outlet passage, and the pilot gas electromagnetic valve 15 is arranged on the second gas outlet passage; the oil removal filter 12 and the driving gas circuit pressure gauge 13 are sequentially connected between the air compressor 8 and the driving gas circuit pressure reducer 14 and the pilot gas electromagnetic valve 15 which are connected in parallel through pipelines; the air compressor 8 is used for providing compressed air, the air compressor 8 is arranged at the front part in the cabin body 1, and an air compressor display screen observation door 81 is arranged at the front part of the cabin body 1, so that the display screen of the air compressor 8 can be conveniently observed and operated; an air compressor exhaust door 82 is arranged at the upper part of the cabin body 1.

Referring to fig. 3 and 10, the pre-increasing gas circuit 5 is provided with a first nitrogen inlet 48 and a second nitrogen inlet 49 for delivering nitrogen, and the first nitrogen inlet 48 and the second nitrogen inlet 49 are arranged on the first inflatable panel 201; the first nitrogen input port 48 is connected in parallel with the second nitrogen input port 49, the pre-amplification gas path 5 further comprises a first pre-amplification gas path one-way valve 34, a pre-amplification gas path dryer 35, a pre-amplification gas path filter 16 and a second pre-amplification gas path one-way valve 36 which are sequentially connected between the first nitrogen input port 48 and the second nitrogen input port 49 which are connected in parallel with a third gas outlet path through pipelines, a first manual reversing valve 481 is arranged between the first nitrogen input port 48 and the first pre-amplification gas path one-way valve 34, a second manual reversing valve 491 is arranged between the second nitrogen input port 49 and the first pre-amplification gas path one-way valve 34, and the first manual reversing valve 481 and the second manual reversing valve 491 are arranged on the first gas-filled panel 201; the first manual directional valve 481 and the second manual directional valve 491 are used to manually open to empty the inflation line after inflation is complete; the pre-increase gas circuit 5 further comprises a dew point inspection port 37, a first dew point inspection control valve 38 and a second dew point inspection control valve 39; the first dew point inspection control valve 38 and the second dew point inspection control valve 39 are connected in parallel, the first dew point inspection control valve 38 is connected between the first manual reversing valve 481 and the second manual reversing valve 491 which are connected in parallel and the first pre-air passage one-way valve 34 through pipelines, the second dew point inspection control valve 39 is connected between the pre-air passage dryer 35 and the pre-air passage filter 16 through pipelines, and the dew point inspection port 37, the first dew point inspection control valve 38 and the second dew point inspection control valve 39 are all arranged on the first air charging panel 201.

Referring to fig. 11, the pressurizing air path 6 is provided with a pressurizing pump 9 and a pneumatic reversing valve 17; the pneumatic reversing valve 17 is communicated with the air high-pressure cavity and the low-pressure cavity of the booster pump 9 through pipelines; the pneumatic reversing valve 17 is communicated with a first air inlet passage and a second air inlet passage, the air in the first air inlet passage is used for providing driving air for the booster pump 9, and the air in the second air inlet passage is used for controlling the opening and closing of the pneumatic reversing valve 17; the booster pump 9 is used for boosting the nitrogen, and can boost the nitrogen to 35Mpa; the pressurizing air path 6 further comprises a buffer hose 19, a pressurizing air path safety valve 18, a pressurizing air path one-way valve 40, a pressurizing air path dryer 41, a pipeline temperature sensor 24, a pressurizing air path filter 20, a second pressure relay 22 and a pressurizing air path switch 42 which are sequentially connected between an air outlet of the pressurizing pump 9 and a fourth air outlet path through pipelines; the booster circuit 6 further comprises a booster circuit solenoid valve 43, a booster circuit pressure gauge 23 and a first pressure relay 21 which are sequentially connected between the third air inlet passage and the air inlet of the booster pump 9 through pipelines; the pipeline temperature sensor 24 is used for monitoring the temperature of the pipeline, the first pressure relay 21 and the second pressure relay 22 are used for monitoring the pressure of the pipeline, and an environment temperature sensor is further arranged for monitoring the environment temperature; a first booster pump check valve 44 is arranged at the air inlet of the booster pump 9, and a second booster pump check valve 45 is arranged at the air outlet of the booster pump 9; a first gas cylinder 25 and a second gas cylinder 26 which are connected through a pipeline are arranged between the pressurizing gas circuit electromagnetic valve 43 and the second pressure relay 22; the first gas cylinder 25 and the second gas cylinder 26 are respectively provided with a first gas cylinder valve 250 and a second gas cylinder valve 260, and a switching valve 27 is arranged between the first gas cylinder 25 and the second gas cylinder 26, and the switching valve 27 is used for switching a gas storage station and a pressurizing station.

Referring to fig. 6 and 12, the decompression output air circuit 7 includes a first output air circuit, a second output air circuit, a third output air circuit, a fourth output air circuit and a system decompression output air circuit which are connected in parallel. The first output gas path includes a first pressure reducer 50, a first relief valve 51, a first pressure gauge 52, a first needle valve 53, and a first nitrogen output port 54, which are sequentially connected through a pipe. The second output gas circuit comprises a second pressure reducer 55 and a second safety valve 56 which are sequentially connected through a pipeline, the second pressure reducer 55 and the second safety valve 56 are divided into two branches from the second safety valve 56, the first branch comprises a second pressure gauge 57, a second needle valve 58 and a fifth pressure gauge 59 which are sequentially connected through a pipeline, a second nitrogen output port 60 and a third nitrogen output port 61 are connected in parallel, a third needle valve 62 is arranged between the second nitrogen output port 60 and the fifth pressure gauge 59, and a fourth needle valve 63 is arranged between the third nitrogen output port 61 and the fifth pressure gauge 59; the second branch comprises a fifth needle valve 64 and a fourth nitrogen outlet 65 which are sequentially connected through a pipeline; the second output air circuit further comprises a dew point on-line testing branch circuit connected in parallel with the first branch circuit and the second branch circuit, wherein the dew point on-line testing branch circuit comprises a dew point testing pressure reducer 28, a dew point testing switch 29, a first dew point testing electromagnetic valve 30, a dew point transmitter 31, a second dew point testing electromagnetic valve 32 and a dew point on-line testing port 33 which are sequentially connected through pipelines, the dew point on-line testing branch circuit is used for dew point on-line testing, and the dew point on-line testing port 33 is arranged in the dew point testing area 233. The third output gas circuit comprises a third pressure reducer 66, a third safety valve 67, a third pressure gauge 68, a sixth needle valve 69 and a sixth pressure gauge 70 which are sequentially connected through pipelines, a fifth nitrogen output port 71 and a sixth nitrogen output port 72 are connected in parallel, a seventh needle valve 73 is arranged between the fifth nitrogen output port 71 and the sixth pressure gauge 70, and an eighth needle valve 74 is arranged between the sixth nitrogen output port 72 and the sixth pressure gauge 70. The fourth output gas path includes a fourth pressure gauge 75, a ninth needle valve 76, and a seventh nitrogen output port 77, which are sequentially connected through a pipe. The system pressure release output air circuit comprises a tenth needle valve 46 and a system pressure release output port 47 which are sequentially connected through pipelines.

Referring to fig. 3, 4, 6 and 12, the first pressure reducer 50, the second pressure reducer 55 and the third pressure reducer 66 are used to reduce the pressure of the high-pressure nitrogen gas to 15Mpa, 21.7Mpa and 29Mpa, respectively; the first nitrogen outlet 54 is used for outputting 15Mpa nitrogen, the second nitrogen outlet 60, the third nitrogen outlet 61 and the fourth nitrogen outlet 65 are used for outputting 21.7Mpa nitrogen, the fifth nitrogen outlet 71 and the sixth nitrogen outlet 72 are used for outputting 29Mpa nitrogen, and the seventh nitrogen outlet 77 is used for outputting 35Mpa nitrogen; the first nitrogen outlet 54, the fourth nitrogen outlet 65, the seventh nitrogen outlet 77 are provided on the first inflatable panel 201, and the second nitrogen outlet 60, the third nitrogen outlet 61, the fifth nitrogen outlet 71 and the sixth nitrogen outlet 72 are provided on the second inflatable panel 202; the driving air path pressure gauge 13, the pressurizing air path pressure gauge 23, the first pressure gauge 52, the second pressure gauge 57, the third pressure gauge 68 and the fourth pressure gauge 75 are arranged in the air path observation area 231; the safety valves are used for overpressure protection of the pipelines, the pressure gauges are used for displaying pressure values of the branches, the needle valves are used for output control and flow regulation of nitrogen, and the one-way valves are used for flow direction protection of gas.

In the above-mentioned exemplary embodiment, the pressurizing power of the nitrogen supply device for the mobile aviation device comes from a common air compressor which can only generate low pressure, the nitrogen pressurizing power source is easy to obtain, and the neutral position of the pneumatic reversing valve can be communicated with the air high-pressure cavity and the air low-pressure cavity of the pressurizing pump, so that the energy-saving effect is achieved; the dew point temperature of nitrogen under different use scenes can influence the content of entity water attached to nitrogen to influence the stability of nitrogen, be equipped with dew point on-line test branch road at decompression output gas circuit, can measure the dew point, guarantee the steam content of nitrogen, thereby guarantee the stability of nitrogen in the use.

The specific structure and operation of one embodiment of the nitrogen supply apparatus for mobile aircraft according to the present utility model will be described with reference to fig. 1 to 12:

firstly, a nitrogen supply device for mobile aviation equipment is moved to a working place through a traction rod at the front part of a cabin body, and a hand brake is put down so as to prevent the device from moving in the working process.

Nitrogen enters from a nitrogen input port of the pre-increasing air channel, passes through a first pre-increasing air channel one-way valve, a pre-increasing air channel dryer, a pre-increasing air channel filter and a second pre-increasing air channel one-way valve, enters a third air inlet channel from a third air outlet channel, and is conveyed into the first air storage bottle through a pressurizing air channel electromagnetic valve; in this process, the first dew point inspection control valve and the second dew point inspection control valve may be opened to inspect the dew points at both points, respectively.

Starting an air compressor, dividing compressed air into two paths after passing through an oil removal filter and a driving gas path pressure gauge, wherein one path of compressed air enters a first air inlet path through a driving gas path pressure reducer from a first air outlet path to serve as driving air of a booster pump, the other path of compressed air enters a second air inlet path through a pilot gas electromagnetic valve from a second air outlet path, and the path of air is used for controlling the opening and closing of a pneumatic reversing valve.

The pneumatic reversing valve and the booster pump start to work, nitrogen in the first gas storage bottle enters the booster pump after passing through the booster gas circuit electromagnetic valve, the booster gas circuit pressure gauge and the first pressure relay, the booster pump boosts the nitrogen to 35Mpa, and the boosted nitrogen is conveyed into the second gas storage bottle after passing through the booster gas circuit dryer and the booster gas circuit filter.

And after the high-pressure nitrogen in the second gas storage bottle enters the fourth air inlet passage from the fourth air outlet passage through the pressurizing air passage switch, the pressure is reduced through the branch pressure reducers, and the switch of the corresponding output port is opened as required to output the nitrogen. And finally, opening a system pressure release switch to release pressure of the system.

Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.

Claims (10)

1. A mobile aircraft nitrogen supply apparatus, comprising:

the air driving air circuit (4), the air driving air circuit (4) comprises an air compressor (8) and is used for providing compressed air, and the air driving air circuit (4) is provided with a first air outlet passage and a second air outlet passage which are respectively communicated with the air compressor (8);

the pre-increasing gas circuit (5) is used for conveying nitrogen, and the pre-increasing gas circuit (5) is provided with a nitrogen input port and a third air outlet passage;

the air inlet device comprises a pressurizing air passage (6), wherein the pressurizing air passage (6) is provided with a pressurizing pump (9), a pneumatic reversing valve (17), a first air inlet passage, a second air inlet passage, a third air inlet passage and a fourth air outlet passage; the pneumatic reversing valve (17) is communicated with the air high-pressure cavity and the air low-pressure cavity of the booster pump (9) through pipelines; the first air inlet passage is communicated with the first air outlet passage, the second air inlet passage is communicated with the second air outlet passage, and the third air inlet passage is communicated with the third air outlet passage; the pneumatic reversing valve (17) is communicated with the first air inlet passage and the second air inlet passage, air in the first air inlet passage is used for providing driving air for the booster pump (9), and air in the second air inlet passage is used for controlling the opening and closing of the pneumatic reversing valve (17); the booster pump (9) is used for boosting nitrogen;

the decompression output gas circuit (7), decompression output gas circuit (7) are equipped with pressure reducer, fourth inlet channel and nitrogen gas delivery outlet, fourth inlet channel with fourth outlet channel intercommunication, the pressure reducer is connected between fourth inlet channel and nitrogen gas delivery outlet for reduce pressure to the setting value to high-pressure nitrogen gas.

2. The nitrogen supply device for mobile aviation equipment according to claim 1, wherein the pressurizing gas circuit (6) further comprises a buffer hose (19), a pressurizing gas circuit safety valve (18), a pressurizing gas circuit check valve (40), a pressurizing gas circuit dryer (41), a pipeline temperature sensor (24), a pressurizing gas circuit filter (20), a second pressure relay (22) and a pressurizing gas circuit switch (42) which are sequentially connected between the gas outlet of the pressurizing pump (9) and the fourth gas outlet passage through pipelines; the pressurizing air channel (6) further comprises a pressurizing air channel electromagnetic valve (43), a pressurizing air channel pressure gauge (23) and a first pressure relay (21) which are sequentially connected between the third air inlet channel and the air inlet of the booster pump (9) through pipelines; a first booster pump check valve (44) is arranged at the air inlet of the booster pump (9), and a second booster pump check valve (45) is arranged at the air outlet of the booster pump (9); a first gas storage bottle (25) and a second gas storage bottle (26) which are connected through a pipeline are arranged between the pressurizing gas circuit electromagnetic valve (43) and the second pressure relay (22); the gas storage device is characterized in that the first gas storage bottle (25) and the second gas storage bottle (26) are respectively provided with a first gas storage bottle valve (250) and a second gas storage bottle valve (260), a switching valve (27) is arranged between the first gas storage bottle (25) and the second gas storage bottle (26), and the switching valve (27) is used for switching a gas storage station and a pressurizing station.

3. The nitrogen supply device for the mobile aviation equipment according to claim 1, further comprising a cabin body (1), wherein the air driving air channel (4), the pre-increasing air channel (5), the pressurizing air channel (6) and the depressurizing output air channel (7) are all arranged in the cabin body, and a control panel (2) and a power interface panel (3) are arranged on the cabin body (1).

4. A mobile air device according to claim 3, wherein the pressure reducing output air path (7) further comprises a dew point testing pressure reducer (28), a dew point testing switch (29), a first dew point testing electromagnetic valve (30), a dew point transmitter (31), a second dew point testing electromagnetic valve (32) and a dew point on-line testing port (33) which are sequentially connected through a pipeline, wherein the dew point on-line testing port (33) is arranged on the control panel (2).

5. A mobile aircraft nitrogen supply device according to claim 3, wherein the pre-increase gas circuit (5) further comprises a reversing valve, a first pre-increase gas circuit check valve (34), a pre-increase gas circuit dryer (35), a pre-increase gas circuit filter (16) and a second pre-increase gas circuit check valve (36) which are connected in sequence between the nitrogen input port and the third gas outlet passage through a pipeline; the pre-increase air channel (5) further comprises a dew point check port (37), a first dew point check control valve (38) and a second dew point check control valve (39) which are arranged on the control panel (2); the first dew point check control valve (38) and the second dew point check control valve (39) are connected in parallel, the first dew point check control valve (38) is connected between the reversing valve and the first pre-increase air passage check valve (34) through a pipeline, and the second dew point check control valve (39) is connected between the pre-increase air passage dryer (35) and the pre-increase air passage filter (16) through a pipeline.

6. A mobile air equipment nitrogen supply device according to claim 3, characterized in that the cabin (1) is provided with a traction rod (10) and a hand brake (11), the traction rod (10) is used for hanging and towing equipment, and one end provided with the traction rod (10) is the front part of the cabin (1).

7. The nitrogen supply device for mobile aviation equipment according to claim 6, wherein the air compressor (8) is arranged at the front part in the cabin body (1), and an air compressor display screen observation door (81) is arranged at the front part of the cabin body (1) and is used for observing and operating a display screen of the air compressor (8); an air compressor exhaust port door (82) is arranged on the upper portion of the cabin body (1).

8. The nitrogen supply device for mobile aviation equipment according to any one of claims 1 to 7, wherein the air-driven air circuit (4) further comprises an oil removal filter (12), a driving air circuit pressure gauge (13), a driving air circuit pressure reducer (14) and a pilot air solenoid valve (15); the driving gas circuit pressure reducer (14) is arranged on the first gas outlet passage, and the pilot gas electromagnetic valve (15) is arranged on the second gas outlet passage; the oil removal filter (12) and the driving gas circuit pressure gauge (13) are sequentially arranged on a pipeline which is communicated with the air compressor (8) and the first and second gas outlet passages.

9. The nitrogen supply device for mobile aviation equipment according to any one of claims 1 to 7, wherein the pressure-reducing output gas circuit (7) further comprises an output gas circuit safety valve, an output gas circuit pressure gauge and a needle valve which are connected between the pressure reducer and the nitrogen output port in sequence through a pipeline, the output gas circuit safety valve is used for overpressure protection of the pipeline, the output gas circuit pressure gauge is used for displaying a pressure value of the pipeline, and the needle valve is used for output control and flow adjustment of nitrogen.

10. The nitrogen supply device for mobile aviation equipment according to any one of claims 1 to 7, further comprising a system pressure relief output air circuit, wherein the system pressure relief output air circuit is connected in parallel with the pressure relief output air circuit (7), and the system pressure relief output air circuit is provided with a system pressure relief switch (46) and a system pressure relief output port (47).