CN113309980B - Gas supply system, method and gas supply device - Google Patents

Gas supply system, method and gas supply device Download PDF

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Publication number
CN113309980B
CN113309980B CN202110690679.1A CN202110690679A CN113309980B CN 113309980 B CN113309980 B CN 113309980B CN 202110690679 A CN202110690679 A CN 202110690679A CN 113309980 B CN113309980 B CN 113309980B
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China
Prior art keywords
gas
pressure
gas cylinder
mounting bracket
inflation
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CN113309980A (en
Inventor
冯振华
刘宏伟
李宗峰
张聚乐
王珂
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Technology and Engineering Center for Space Utilization of CAS
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Technology and Engineering Center for Space Utilization of CAS
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/02—Pipe-line systems for gases or vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to a gas supply system, a method and a gas supply device, wherein the gas supply system comprises a gas cylinder, an air compressor, an external inflation interface, a first self-locking valve and a first pressure sensor, a bottle opening of the gas cylinder is communicated with an inflation pipeline, two inflation branches of the inflation pipeline are respectively connected with the air compressor and the external inflation interface, the inflation pipeline is respectively provided with the first self-locking valve and the first pressure sensor, the first pressure sensor is used for monitoring the pressure value of the gas cylinder and feeding back the pressure value to a controller, and the controller is used for controlling the first self-locking valve to be closed when the pressure value of the gas cylinder reaches a preset threshold value; the mouth of the gas cylinder is also connected with a gas supply pipeline. The invention can fill high-pressure gas through the external inflation interface; the gas discharged after the test platform in the compression cabin is used can be charged into the gas cylinder through the air compression pump, and then is discharged out of the cabin after use, so that the gas recycling effect in the cabin is achieved, the scientific requirement of small gas consumption can be met, and the problem of shortage of on-orbit gas resources is solved.

Description

Gas supply system, method and gas supply device
Technical Field
The invention relates to the technical field of on-orbit filling of gas in a space station, in particular to a gas supply system, a gas supply method and a gas supply device.
Background
A plurality of large space scientific facilities are used for carrying out scientific experiments during the operation of the space station in the orbit, or gas is used when ground products are used for carrying out experiments, a gas power source needs to be provided, and particularly, the large space scientific experiment platform is used as a power source for attitude control and maintenance when carrying out non-contact independent flight.
How to design a gas supply method that can be safe, reliable and stable, can enough carry out high pressure gas supply, filling simultaneously, can incessantly utilize surrounding space gas resources circulation gas supply again on the orbit, follow-up resource cost that tries to reduce as far as possible goes up, realization automatic control, real-time supervision's air supply method is the important problem that awaits the solution urgently.
Disclosure of Invention
The present invention provides a gas supply system, a method and a gas supply device, which are directed to overcome the disadvantages of the prior art.
The technical scheme for solving the technical problems is as follows: a gas supply system comprises a gas cylinder, an air compressor pump, an external inflation interface, a first self-locking valve and a first pressure sensor, wherein a bottle opening of the gas cylinder is communicated with an inflation pipeline, two inflation branches of the inflation pipeline are respectively connected with the air compressor pump and the external inflation interface, the inflation pipeline is respectively provided with the first self-locking valve and the first pressure sensor, the first pressure sensor is used for monitoring a pressure value of the gas cylinder and feeding back the pressure value to a controller, and the controller is used for controlling the first self-locking valve to be closed when the pressure value of the gas cylinder reaches a preset threshold value; the bottle mouth of the gas cylinder is also connected with a gas supply pipeline.
The invention has the beneficial effects that: according to the gas supply system, after the high-pressure gas carried in the upward movement for the first time is used up, the high-pressure gas can be filled through the external inflation interface (extra upward high-pressure gas resources are needed); the gas discharged after the test platform in the compression chamber is used can be charged into the gas cylinder through the air compression pump, and then discharged out of the chamber through the downstream after use, so that the gas recycling effect in the chamber is achieved (no additional uplink gas resource is needed), the scientific requirement of small gas consumption can be met, and the problem of shortage of on-orbit gas resources is solved.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, a first filter and a first one-way valve are sequentially arranged on the inflation branch where the air compression pump is located along the inflation direction.
The beneficial effect of adopting the further scheme is that: the first filter can filter outside gas particles, the first one-way valve can guarantee one-way flow of gas, and after the air compression pump is inflated, gas cannot be backflushed, and meanwhile, a secondary sealing effect is achieved.
Furthermore, a second self-locking valve, a pressure reducing valve and a second pressure sensor are sequentially arranged on the air supply pipeline along the air supply direction.
The beneficial effect of adopting the further scheme is that: the second self-locking valve can control the on-off of the high-pressure gas circuit at the outlet and protect the safety of downstream components; the pressure reducing valve reduces the pressure and maintains the pressure output precision, reduces the original pressure to proper pressure and stably outputs the pressure to the downstream; the second pressure sensor may monitor the pressure of the output gas.
Further, a second filter and a second one-way valve are further arranged on the air supply pipeline, and the second filter and the second one-way valve are located between the pressure reducing valve and the second pressure sensor.
The beneficial effect of adopting the further scheme is that: the second filter can filter the output gas after pressure reduction, and the second one-way valve ensures the one-way flow of the output gas.
Furthermore, an external inflation high-pressure plug is arranged on the external inflation interface.
The beneficial effect of adopting the further scheme is that: there is two-stage sealed on the external interface of aerifing, and the one-level can seal through first high pressure self-locking valve, and the second grade can seal through external high pressure end cap of aerifing, and the security of aerifing has been guaranteed in the two-stage seal.
A gas supply method, comprising:
filling mode: the gas is filled through an external inflation interface or an air compression pump, a first pressure sensor monitors the pressure value of the gas cylinder and feeds the pressure value back to a controller, and the controller is used for controlling the first self-locking valve to be closed when the pressure value of the gas cylinder reaches a preset threshold value;
in-orbit working mode: the gas cylinder supplies gas to the experiment platform through the gas supply pipeline, and the experiment platform discharges the gas into the cabin after being used.
The invention has the beneficial effects that: according to the gas supply method, after the high-pressure gas carried in the first ascending process is used up, the high-pressure gas can be filled through the external inflation interface (extra ascending high-pressure gas resources are needed); the gas discharged after the test platform in the compression chamber is used can be charged into the gas cylinder through the air compression pump, and then discharged out of the chamber through the downstream after use, so that the gas recycling effect in the chamber is achieved (no additional uplink gas resource is needed), the scientific requirement of small gas consumption can be met, and the problem of shortage of on-orbit gas resources is solved.
Further, the on-orbit working mode further comprises that a second self-locking valve on the gas supply pipeline is opened, gas in the gas cylinder is decompressed to a set required pressure through a pressure reducing valve on the gas supply pipeline, and the pressure change value is controlled within a preset precision range.
The beneficial effect of adopting the further scheme is that: the pressure reducing valve reduces the pressure and maintains the pressure output precision, reduces the original pressure to the proper pressure, and stably outputs the original pressure to the downstream.
And further, the on-orbit working mode also comprises a second pressure sensor on the gas supply pipeline for monitoring the output gas pressure value in real time and feeding back the output gas pressure value to the controller, and the controller judges the health state of the on-orbit working mode according to the output gas pressure value.
Further, the step of filling gas through the external inflation interface comprises the step of filling gas into the gas cylinder by utilizing additional upward gas resources.
Further, the step of filling gas through the air compression pump comprises the step of compressing the gas discharged into the cabin after the experiment platform is used by the air compression pump and filling the gas into the gas cylinder.
A gas supply device comprises the gas supply system and a gas cylinder bearing structure, wherein the gas cylinder bearing structure comprises a shell, a first mounting bracket, a second mounting bracket and a third mounting bracket, the first mounting bracket, the second mounting bracket and the third mounting bracket are fixed in the shell at intervals side by side, and the third mounting bracket is positioned between the first mounting bracket and the second mounting bracket; the gas cylinder clamp is characterized in that a gas cylinder clamp used for limiting the bottom of a gas cylinder is arranged on the first mounting bracket, a limiting ring used for limiting the opening of the gas cylinder is arranged on the second mounting bracket, an assembling hole used for assembling the middle part of the gas cylinder is formed in the third mounting bracket, and buffering structures are respectively arranged at the positions of the first mounting bracket, the second mounting bracket and the third mounting bracket, which are in contact with the gas cylinder.
The invention has the beneficial effects that: the invention utilizes the gas cylinder bearing structure adopting the highly integrated design, can support the gas cylinder and the gas circuit part assembly and simultaneously plays a role in launching mechanics bearing.
Drawings
FIG. 1 is an external structural schematic view of a gas cylinder force bearing structure of the invention;
FIG. 2 is a schematic diagram of the internal structure of the gas cylinder force bearing structure of the invention;
FIG. 3 is a schematic view of the gas cylinder of the present invention;
FIG. 4 is a schematic view of the gas supply apparatus according to the present invention;
fig. 5 is a schematic view of the gas supply apparatus of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a first mounting bracket;
2. a second mounting bracket;
3. a third mounting bracket;
4. a housing; 41. a front plate; 42. a back plate; 43. a partition plate; 44. a base plate; 45. wire clamps; 46. a hose press plate;
5. a gas cylinder; 50. an air compression pump; 51. an external inflation interface; 52. a first self-locking valve; 53. a first pressure sensor; 54. a first filter; 55. a first check valve; 56. a second self-locking valve; 57. a pressure reducing valve; 58. a second pressure sensor; 59. a second filter; 590. a second one-way valve; 591. a low pressure gas outlet; 592. a flexible pipeline;
6. a gas cylinder clamp; 61. a cushion pad; 7. a limiting ring; 71. and a buffer ring.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 3 to 5, a gas supply system of this embodiment includes a gas cylinder 5, an air compressor 50, an external inflation interface 51, a first self-locking valve 52, and a first pressure sensor 53, where a mouth of the gas cylinder 5 is communicated with an inflation pipeline, two inflation branches of the inflation pipeline are respectively connected with the air compressor 50 and the external inflation interface 51, the inflation pipeline is respectively provided with the first self-locking valve 52 and the first pressure sensor 53, the first pressure sensor 53 is used to monitor a pressure value of the gas cylinder and feed back the pressure value to a controller, and the controller is used to control the first self-locking valve 52 to close when the pressure value of the gas cylinder 5 reaches a preset threshold value; and the opening of the gas cylinder 5 is also connected with a gas supply pipeline.
As shown in fig. 3 to 5, the air compression pump 50 of the present embodiment is provided with a first filter 54 and a first check valve 55 in this order along the inflation direction on the inflation branch. The first filter can filter outside gas particles, the first one-way valve can guarantee one-way flow of gas, and after the air compression pump is inflated, gas cannot be backflushed, and meanwhile, a secondary sealing effect is achieved.
As shown in fig. 3 to 5, the air supply pipeline of the present embodiment is provided with a second self-locking valve 56, a pressure reducing valve 57, and a second pressure sensor 58 in this order along the air supply direction. The second self-locking valve can control the on-off of the high-pressure gas circuit at the outlet and protect the safety of downstream components; the pressure reducing valve reduces the pressure and maintains the pressure output precision, reduces the original pressure to proper pressure and stably outputs the pressure to the downstream; the second pressure sensor may monitor the pressure of the output gas.
As shown in fig. 3 to 5, a second filter 59 and a second check valve 590 are further disposed on the air supply pipeline of this embodiment, and the second filter 59 and the second check valve 590 are located between the pressure reducing valve 57 and the second pressure sensor 58. The second filter can filter the output gas after pressure reduction, and the second one-way valve ensures the one-way flow of the output gas.
As shown in fig. 3 to 5, an external inflation high-pressure plug is disposed on the external inflation interface 51 of the present embodiment. There is two-stage sealed on the external interface of aerifing, and the one-level can seal through first high pressure self-locking valve, and the second grade can seal through external high pressure end cap of aerifing, and the security of aerifing has been guaranteed in the two-stage seal.
The gas cylinder of the embodiment is used for storing high-pressure nitrogen or air, adopts an all-metal ball-column structure, is made of titanium alloy TC4, has the working pressure of 15MPa (not limited to 15MPa), the reliability of more than 0.999 and the safety coefficient of more than 2 times; the pressure reducing valve reduces the pressure and maintains the pressure output precision, the pressure is reduced by a single stage, and the safety factor is more than 2 times; the first self-locking valve and the second self-locking valve are both high-pressure self-locking valves which can control the on-off of a gas circuit, are electromagnetic valves with bistable structures, adopt a pulse power-on working mode, can be kept at a final instruction position without electricity after power failure, have the characteristics of high efficiency and energy conservation, are suitable for application fields with strict requirements on power consumption, such as space environments and the like, and have more than 3 times of safety coefficient; the first pressure sensor and the second pressure sensor both adopt high-pressure sensors to monitor the pressure of an air source in the air bottle, and the safety factor is more than 3 times; the air compression pump compresses surrounding air and fills the air cylinder, the first filter filters external air particles, the first one-way valve ensures that the air flows in one direction, and after the air compression pump is filled, the air is prevented from backflushing, and a secondary sealing effect is achieved; the second filter is used for filtering the output gas after pressure reduction; the second one-way valve ensures the one-way flow of the output gas; the soft pipeline component is designed into 1-branch-4-path (can be changed according to different requirements), and the decompressed gas is respectively conveyed to the gas using downstream. The gas circuit part is integrated to be an independent component and is installed on a gas cylinder bearing structure to form the gas supply device, and the gas supply device is high in installation freedom degree and simple in process.
The high-pressure pipeline parts such as the inflation pipeline, the inflation branch and the like of the embodiment are welded and formed by stainless steel hard pipes, are in threaded connection with other components by using pipe joints, are sealed by using thread sealing agents of a raw material belt and a SWAK anaerobic pipe, and have single-point leakage rate not greater than 1.0 multiplied by 10-7Pa·m3/s。
The gas supply system of the embodiment realizes a mixing mode of high-pressure gas supply and intermittent circulating gas supply, can utilize high-pressure gas with 15Mpa (not limited to 15Mpa) from a gas cylinder to go upward for the first time, has a safety coefficient more than 2 times, and solves the problem of large gas consumption such as key technology verification, initialization and the like after a large space science experiment platform goes upward for the first time; after the high-pressure gas carried in the upward direction is used up for the first time, the high-pressure gas can be filled through the filling port (extra upward high-pressure gas resources are needed), the gas in the cabin can be compressed through the air compression pump and filled into the gas cylinder, and the gas is discharged into the cabin through the downstream after being used, so that the gas recycling effect in the cabin is achieved (extra upward gas resources are not needed), the scientific requirement of small gas consumption is met, and the problem of shortage of on-track gas resources is solved. The air compression pump in the gas supply device has the compression and inflation capacity of 2.5Mpa, and supports on-track replacement and upgrade at the later stage, so that the air compression pump with stronger compression and inflation capacity can be replaced by a new generation of air compression pump with stronger compression and inflation capacity, the single space scientific experiment time is prolonged, and greater scientific benefit is created. Two inflation branches of the gas supply device are respectively provided with two stages of seals, wherein the external inflation branch is sealed by a first self-locking valve at one stage, and is sealed by an external inflation high-pressure plug at the second stage; the branch road one-level is aerifyd at air compressor pump place is sealed through first self-locking valve, and the second grade is sealed through first check valve, and the security improves greatly, and any one-level is sealed ageing, can not cause the high-pressure gas security problem.
The gas supply system of the present embodiment may use any device as the mounting support.
The gas supply system of the present embodiment is used to fill, store, manage, and deliver gas to a gas supply device. The high-pressure gas is reduced to the low pressure required by the system work and is kept within a certain precision range, and is conveyed to the downstream. After the high-pressure gas carried in the upward movement for the first time is used up, the high-pressure gas can be filled through the external inflation interface (extra upward high-pressure gas resources are needed); the gas discharged after the test platform in the compression chamber is used can be charged into the gas cylinder through the air compression pump, and then discharged out of the chamber through the downstream after use, so that the gas recycling effect in the chamber is achieved (no additional uplink gas resource is needed), the scientific requirement of small gas consumption can be met, and the problem of shortage of on-orbit gas resources is solved.
Example 2
A gas supply method of the present embodiment includes:
filling mode: filling gas through an external inflation interface 51 or an air compression pump 50, monitoring a pressure value of a gas cylinder by a first pressure sensor 53 and feeding back the pressure value to a controller, wherein the controller is used for controlling the first self-locking valve 52 to be closed when the pressure value of the gas cylinder 5 reaches a preset threshold value;
in-orbit working mode: the gas cylinder 5 supplies gas to the experiment platform through the gas supply pipeline, and the experiment platform discharges the gas into the cabin after being used. Specifically, when the experiment platform needs to work, the electric control second self-locking valve is opened, high-pressure gas passes through the relief pressure valve, and gas pressure reduces to the demand pressure of setting for 0.75Mpa to control pressure variation value in certain precision range (± 0.014Mpa), first pressure sensor real-time supervision air supply pressure value, second pressure sensor real-time supervision output gas pressure value feeds back to the controller, the health status of autonomic judgement system.
The on-orbit working mode further comprises the steps that the second self-locking valve 56 on the gas supply pipeline is opened, the gas in the gas cylinder 5 is decompressed to the set required pressure through the pressure reducing valve 57 on the gas supply pipeline, and the pressure change value is controlled within the preset precision range. The pressure reducing valve reduces the pressure and maintains the pressure output precision, reduces the original pressure to the proper pressure, and stably outputs the original pressure to the downstream.
The on-orbit working mode further comprises that a second pressure sensor 58 on the gas supply pipeline monitors the output gas pressure value in real time and feeds back the output gas pressure value to the controller, and the controller judges the health state of the on-orbit working mode according to the output gas pressure value.
The filling of gas through the external inflation interface 51 includes filling gas into the gas cylinder 5 using additional upstream gas resources.
The filling of the gas by the air compression pump 50 comprises the step of compressing the gas discharged into the cabin after the experiment platform is used by the air compression pump 50 and filling the gas into a gas cylinder.
In the gas supply method of the embodiment, after the high-pressure gas carried in the first ascending is used up, the high-pressure gas can be filled through the external inflation interface (extra ascending high-pressure gas resources are needed); the gas discharged after the test platform in the compression chamber is used can be charged into the gas cylinder through the air compression pump, and then discharged out of the chamber through the downstream after use, so that the gas recycling effect in the chamber is achieved (no additional uplink gas resource is needed), the scientific requirement of small gas consumption can be met, and the problem of shortage of on-orbit gas resources is solved.
Example 3
As shown in fig. 1 to 4, the present embodiment provides a gas supply apparatus that can structurally support the gas supply system of embodiment 1. The gas supply system described in embodiment 1 can be specifically matched with a gas cylinder bearing structure for structural support.
As shown in fig. 1 to 4, the gas cylinder force-bearing structure comprises a housing 4, a first mounting bracket 1, a second mounting bracket 2 and a third mounting bracket 3, wherein the first mounting bracket 1, the second mounting bracket 2 and the third mounting bracket 3 are fixed in the housing 4 side by side at intervals, and the third mounting bracket 3 is located between the first mounting bracket 1 and the second mounting bracket 2; the gas cylinder clamp 6 used for limiting the bottom of the gas cylinder 5 is arranged on the first mounting support 1, the limiting ring 7 used for limiting the opening of the gas cylinder is arranged on the second mounting support 2, an assembling hole used for assembling the middle of the gas cylinder 5 is formed in the third mounting support 3, and buffering structures are arranged at the positions, in contact with the gas cylinder 5, of the first mounting support 1, the second mounting support 2 and the third mounting support 3 respectively.
As shown in fig. 2, the first mounting bracket 1 of this embodiment is provided with a limiting hole, and the gas cylinder clamp 6 is fixed on the periphery of the limiting hole in an arch shape. The gas cylinder can be limited by passing the gas cylinder through the limiting hole and utilizing the gas cylinder hoop to clamp the gas cylinder at the bottom of the gas cylinder.
As shown in figure 2, the gas cylinder clamp 6 is of a cross structure or a rice-shaped structure, and the shape of the gas cylinder clamp 6 is matched with the shape of the bottom of the gas cylinder. The gas cylinder clamp can prevent the axial motion of the gas cylinder, can select the shape of the gas cylinder clamp as required, and is used for positioning and supporting the center of the bottom of the gas cylinder and wrapping the bottom of the gas cylinder.
As shown in fig. 2, in order to prevent the gas cylinder from being scratched by directly contacting with the outer surface of the metal structure, prevent the gas cylinder from moving radially, and damp the high-pressure gas cylinder, the contact positions of the first mounting bracket 1, the second mounting bracket 2, and the third mounting bracket 3 with the gas cylinder 5 are respectively provided with a buffer structure. A buffer pad 61 can be arranged in the gas cylinder clamp 6 (the position of the buffer pad 61 in fig. 2 of the present application is only illustrated, and the buffer pad is arranged on the inner side of the gas cylinder clamp 6 to buffer the gas cylinder 5), and the buffer pad 61 can be a silicone rubber pad to buffer the bottom of the gas cylinder 5; a buffering ring 71 is arranged in the limiting ring 7, and the buffering ring 71 can be a silicon rubber ring and can buffer the opening of the gas cylinder.
As shown in fig. 2, in the present embodiment, the first mounting bracket 1, the second mounting bracket 2, and the third mounting bracket 3 are formed by butt-jointing two brackets having circular arch-shaped bayonets, respectively. Two supports with the circular arch-shaped bayonets are butted to form the mounting support, so that the strength and force transferring effect are good, and the support is conveniently assembled in the shell. The buffer rings can be divided into two groups which are respectively fixed in the two arch structures of the limiting ring. And the two corresponding circular arch bayonets on the first mounting bracket 1 are also respectively provided with a buffer structure, and the buffer structures form a buffer ring for clamping the bottom of the gas cylinder after the two circular arch bayonets of the first mounting bracket are butted.
As shown in fig. 2, two corresponding circular arch bayonets on the third mounting bracket 3 are also provided with a buffer structure, and the two circular arch bayonets of the third mounting bracket are butted to form a buffer ring for clamping the gas cylinder body; the setting of third installing support is convenient for carry out the location support to the gas cylinder body, and the buffering circle that sets up in the pilot hole also plays the cushioning effect to the gas cylinder body. The buffer ring can be a silicon rubber ring. The gas cylinder load-bearing structure of this embodiment can set up tertiary installing support, gas cylinder bottleneck one-level, one-level and gas cylinder bottle bottom one-level in the middle of the body of the bottle, fine play the effect of pressing from both sides tight gas cylinder. Meanwhile, the three mounting supports are formed by butt joint of two supports with a circular arch bridge structure form, and the strength and force transmission effect are good.
The buffer structure of setting on three installing support of this embodiment can adopt the silicon rubber material, specifically can paste corresponding position department with the buffer structure of silicon rubber material. For example, GD414 glue can be used to fix the silicone rubber pad and the silicone rubber ring inside the cylinder clamp and at the circular arch-shaped bayonet of the three mounting brackets.
As shown in fig. 1, the limiting hole on the first mounting bracket 1, the limiting ring 7 on the second mounting bracket 2, and the assembling hole on the third mounting bracket 3 of this embodiment are arranged in a one-to-one correspondence manner, and a set of the limiting hole, the limiting ring, and the assembling hole that are arranged in a corresponding manner are used for assembling one gas cylinder 5. The number of the limiting holes on the first mounting bracket 1, the number of the limiting rings 7 on the second mounting bracket 2 and the number of the mounting holes on the third mounting bracket 3 may be respectively multiple, for example, 2, 3, 4, 5, 6, etc., as shown in fig. 1, the number of the limiting holes, the number of the limiting rings and the number of the mounting holes on the three mounting brackets are respectively 4, and 4 gas cylinders can be mounted. In addition, the third mounting bracket 3 mainly limits the body of the gas cylinder 5, so that a plurality of third mounting brackets 3 can be arranged, and the plurality of third mounting brackets 3 can limit the body of the gas cylinder 5.
A plurality of first mounting brackets, a plurality of second mounting brackets and a plurality of third mounting brackets may be mounted in the housing 4, for example, an upper and a lower two-layer or multi-layer structure may be provided, and each layer is provided with a set of mounting brackets.
The housing 4 of the embodiment can be in any shape, and can be in a cylindrical structure with two open ends, so that the gas cylinder 5 can be conveniently connected with other equipment needing gas supply. The housing 4 may have a polygonal cylindrical structure, an elliptical cylindrical structure, a cylindrical structure, or the like. The casing 4 of this embodiment adopts cavity barreled structure, and the installing support that will be used for the load is fixed on the inner wall of cavity tubular structure, can wrap up the support to the gas cylinder, and the load supports the effect better.
As shown in fig. 1, 2 and 4, in particular, the housing 4 of the present embodiment includes a partition plate 43, a bottom plate 44, a front plate 41 and a back plate 42, the partition plate 43, the bottom plate 44, the front plate 41 and the back plate 42 are connected to form a rectangular housing structure, the plurality of gas cylinder clamps 6 on the first mounting bracket 1 are sequentially arranged in a direction from the front plate 41 to the back plate 42, and the plurality of retainer rings 7 on the second mounting bracket 2 are sequentially arranged in a direction from the front plate 41 to the back plate 42; the gas cylinder clamps 6 and the limiting rings 7 are arranged in a one-to-one correspondence mode. The partition 43 is provided with a clamp 45 and a hose clamp 46 for positioning a hose 592 connected to a low pressure gas outlet 591 of the gas cylinder. The square shell structure is adopted, so that the mounting support is convenient to connect and fix, and the gas cylinder in the mounting support is effectively stressed.
The gas cylinder bearing structure of this embodiment adopts highly integrated design, can support gas cylinder and gas circuit part subassembly, plays launching mechanics load-bearing effect simultaneously. In order to reduce weight and simplify the processing technology, the structural material of the gas cylinder bearing structure can be aluminum magnesium alloy (with low density), and the structural form adopts a plate form and an arch bridge form which are easy to process. The metal structure of this embodiment all adopts integrated into one piece, improves mechanical strength to can pass through the mounting bracket of each integrated into one piece and install on the casing through the screw.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (1)

1. A gas supply device for space station on-rail filling of gas; the gas cylinder force-bearing structure comprises a shell, a first mounting bracket, a second mounting bracket and a third mounting bracket, wherein the first mounting bracket, the second mounting bracket and the third mounting bracket are fixed in the shell at intervals side by side; the gas cylinder clamp used for limiting the bottom of the gas cylinder is arranged on the first mounting bracket, the limiting ring used for limiting the opening of the gas cylinder is arranged on the second mounting bracket, the assembling hole used for assembling the middle part of the gas cylinder is arranged on the third mounting bracket, and the contact positions of the first mounting bracket, the second mounting bracket and the third mounting bracket with the gas cylinder are respectively provided with a buffer structure; the baffle plate of the shell is provided with a wire clamp and a hose pressing plate which are used for positioning a hose line connected with a low-pressure gas outlet of the gas cylinder;
the gas supply system comprises a gas cylinder, an air compressor pump, an external inflation interface, a first self-locking valve and a first pressure sensor, wherein a bottle opening of the gas cylinder is communicated with an inflation pipeline, two inflation branches of the inflation pipeline are respectively connected with the air compressor pump and the external inflation interface, the inflation pipeline is respectively provided with the first self-locking valve and the first pressure sensor, the first pressure sensor is used for monitoring a pressure value of the gas cylinder and feeding back the pressure value to a controller, and the controller is used for controlling the first self-locking valve to be closed when the pressure value of the gas cylinder reaches a preset threshold value; the opening of the gas cylinder is also connected with a gas supply pipeline; a first filter and a first one-way valve are sequentially arranged on the inflation branch where the air compression pump is located along the inflation direction; a second self-locking valve, a pressure reducing valve and a second pressure sensor are sequentially arranged on the air supply pipeline along the air supply direction; the air supply pipeline is also provided with a second filter and a second one-way valve, and the second filter and the second one-way valve are positioned between the pressure reducing valve and the second pressure sensor; an external inflation high-pressure plug is arranged on the external inflation interface; the compression and inflation capacity of the air compression pump is 2.5Mpa, and the on-track replacement and upgrade are supported;
the gas supply method of the gas supply device comprises the following steps:
filling mode: after the high-pressure gas carried in the upward direction is used up for the first time, the high-pressure gas can be filled through an external inflation interface, the gas in the cabin can be compressed through an air compression pump and is inflated into a gas cylinder, and the gas is discharged into the cabin through the downstream after being used; the first pressure sensor monitors a pressure value of the gas cylinder and feeds the pressure value back to the controller, and the controller is used for controlling the first self-locking valve to be closed when the pressure value of the gas cylinder reaches a preset threshold value;
the step of filling gas through the external inflation interface comprises the step of filling gas into the gas cylinder by using additional uplink gas resources; the step of filling gas through the air compression pump comprises the steps of compressing the gas discharged into the cabin after the experiment platform is used by the air compression pump and filling the gas into a gas cylinder;
in-orbit working mode: the gas cylinder supplies gas to the experiment platform through the gas supply pipeline, and the gas is discharged into the cabin after the experiment platform is used; opening a second self-locking valve on the gas supply pipeline, reducing the pressure of the gas in the gas cylinder to a set required pressure through a pressure reducing valve on the gas supply pipeline, and controlling a pressure change value to be within a preset precision range; and a second pressure sensor on the gas supply pipeline monitors the output gas pressure value in real time and feeds back the output gas pressure value to the controller, and the controller judges the health state of the on-orbit working mode according to the output gas pressure value.
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