CN110131495A - A kind of inflation switching device - Google Patents

A kind of inflation switching device Download PDF

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Publication number
CN110131495A
CN110131495A CN201910426881.6A CN201910426881A CN110131495A CN 110131495 A CN110131495 A CN 110131495A CN 201910426881 A CN201910426881 A CN 201910426881A CN 110131495 A CN110131495 A CN 110131495A
Authority
CN
China
Prior art keywords
shell
pressure release
piston
inflation
switching device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910426881.6A
Other languages
Chinese (zh)
Inventor
赵庆锋
刘朝晖
吴佳元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Aircraft Industrial Group Co Ltd
Original Assignee
Chengdu Aircraft Industrial Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Aircraft Industrial Group Co Ltd filed Critical Chengdu Aircraft Industrial Group Co Ltd
Priority to CN201910426881.6A priority Critical patent/CN110131495A/en
Publication of CN110131495A publication Critical patent/CN110131495A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/04Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/08Screw-threaded joints; Forms of screw-threads for such joints with supplementary elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining

Abstract

The invention discloses a kind of inflation switching devices, including shell (1), main airway and relief valve, shell (1) is provided with main airway in the axial direction, main airway one end is the air inflation nozzle connectivity port for connecting aircraft accumulator air inflation nozzle, the other end is the inflation port for connecting loading line, it is characterized by: the body of shell (1) is equipped with the relief valve that shell (1) interior gas can be discharged, relief valve inner piston (12) blocks rapidly pipeline under acting force of the spring and overpressure effect, can prevent gas leakage in gas replenishment process;After the completion of inflator is made, overbottom pressure in pipe can be quickly removed by relief valve, after shedding external force, i.e. detachable air charging system, it improves work efficiency, valve opening is opened up in the air inflation nozzle connectivity port of shell (1), and the pressurization stop valve of clamping aircraft accumulator air inflation nozzle is equipped in valve opening, the fixed locking for the whole next device of pressurized state.

Description

A kind of inflation switching device
Technical field
The present invention relates to a kind of inflation switching device more particularly to a kind of inflation switching devices for preventing disassembly with pressure.
Background technique
Currently, needing to carry out tire, hydraulic accumulator, the damper leg etc. in aircraft in the use process of aircraft Inflation and leak check, it is work that is important in aircraft maintenance maintenance work and needing frequent operation that aircraft, which fills pressurization gas,. Traditional inflator is made mainly to pass through loading line and each storage of aircraft using ground compressed air source unit (such as nitrogen vehicle, nitrogen cylinder) The docking of depressor air inflation nozzle is completed, and is connect wherein inflation pipe fitting is screwed with aircraft accumulator air inflation nozzle using screw thread.Inflation is completed Afterwards, it due to there is no pressure relief device on loading line and gas-charging connection, needs by after the compressed air source unit pressure release of ground, then dismantle inflation Device, working efficiency are very low.If staff dismantles air charging system, meeting in the case that overbottom pressure does not remove in non-pressure release or pipe It causes loading line to fly to get rid of, causes aircraft surfaces or airplane component damaged, even can cause casualties when serious, there are poles Big security risk.
Summary of the invention
To solve loading line in the prior art and inflating pipe fitting without pressure relief device causes working efficiency low and in pressure Loss and security risk caused by air charging system are dismantled in the case where not letting out, the present invention provides a kind of inflation switching devices.This A kind of inflation switching device of invention, it is characterised in that: including shell, main airway and relief valve, the shell is along axis side To main airway is provided with, described main airway one end is the air inflation nozzle connectivity port for connecting aircraft accumulator air inflation nozzle, and the other end is The inflation port of loading line is connected, the body of the shell is equipped with the relief valve that gas in shell can be discharged.
Further, the relief valve includes pressure release bonnet and pressure release valve seat, and the relief valve cap is axially arranged with valve rod, Elastic device is cased on valve rod, the elastic device is stuck between pressure release bonnet and pressure release valve seat, the valve rod termination point casing There is piston, the pressure release valve seat is axially arranged with variable cross-section inner hole, and the valve rod and piston protrude into pressure release valve seat variable cross-section Kong Zhong, the piston is matched with pressure release valve seat variable cross-section inner hole stops gas outflow, in the pressure release valve seat variable cross-section Hole is communicated with shell air flue.
Further, the pressure release valve seat variable cross-section inner hole is stepped hole, is relatively narrow side on the outside of the stepped hole, The piston is wider than relatively narrow stepped hole, can preferably block air outflow in this way.
Further, the pressure release valve seat variable cross-section inner hole is trapezoidal hole, is relatively narrow side on the outside of the trapezoidal hole, The piston is variable cross-section piston, is matched with the variable cross-section inner hole.
Further, the elastic device is spring.
Further, it is integrally formed or by welded connecting that the pressure release valve seat, which is with shell,.
Further, the pressure release valve seat is detachably connected with shell.
Further, the pressure release valve seat passes through screw thread and seal washer and shell assembly connection.
Further, the pressure release valve seat and shell are fixed locked by fastening screw B.
Further, valve opening is radially opened up in the air inflation nozzle connectivity port of the shell, is equipped with card in the valve opening The pressurization stop valve of tight aircraft accumulator air inflation nozzle.
Further, the pressurization stop valve includes catch piston, sealing rubber ring B, spring, booster cavity and gas-guide pipeline, The gas-guide pipeline and booster cavity are arranged in housing wall, and the gas-guide pipeline is connected to air flue, in the booster cavity Equipped with catch piston, the catch piston includes piston rod and piston cap, and the piston rod is cased with spring, the spring It is externally provided with sealing rubber ring B, piston rod end protrudes into the valve opening, the piston cap diameter and booster cavity diameter of section phase Together, the pressurization cavity wall both ends are equipped with the positive stop lug boss of limitation catch piston movement.
Further, the air inflation nozzle connectivity port one that the pressurization stop valve is uniformly distributed in shell is enclosed.
Further, the booster cavity of the described pressurization stop valve by dismountable air inflation nozzle connectivity port end cap and air inflation nozzle Connectivity port composition, when assembly, are fixed with fastening screw A.
Further, sealing ring is equipped between the end cap and air inflation nozzle connectivity port.
Further, the fastening screw A carries out locking processing.
Of the invention have a following good effect, inflation switching device of the invention, in gas replenishment process, relief valve inner piston Pipeline is blocked rapidly under acting force of the spring and overpressure effect, can prevent gas leakage in gas replenishment process;Finish in inflator Cheng Hou can quickly remove overbottom pressure in pipe by relief valve, and after shedding external force, i.e., detachable air charging system improves work efficiency.
The setting pressurization stop valve in this inflation switching device is protected for the fixed locking of the whole next device of pressurized state Air charging system is demonstrate,proved after docking with aircraft accumulator air inflation nozzle, can not be dismantled under pressurized state in gas replenishment process, effectively prevent machine Be engaged in it is with pressure disassembly gas-charging connection when security risk.Flexible with clamping, stability is good, highly-safe, versatile advantage.
Detailed description of the invention
Fig. 1 is a kind of inflation switching device schematic diagram of the invention.
Fig. 2 is a kind of inflation switching device A-A cross-sectional view of the invention.
Fig. 3 is a kind of inflation switching device B-B cross-sectional view of the invention.
In figure: 1. shells, 2. fastening screw A, 3. sealing rubber ring A, 4. catch pistons, 5. sealing rubber ring B, 6. springs, 7. Booster cavity, 8. sealing rings, 9. gas-guide pipelines, 10. pressure release bonnets, 11. elastic devices, 12. pistons, 13. pressure release valve seats, 14. is tight Gu screw B, 15. seal washers, 16. main airways.
Specific embodiment
A kind of inflation switching device of the invention as shown in Figure 1, it is characterised in that: including shell 1, main airway 16 and pressure release Valve, the shell 1 are provided with main airway 16 in the axial direction, and described 16 one end of main airway is connection aircraft accumulator air inflation nozzle Air inflation nozzle connectivity port, the other end is the inflation port for connecting loading line, and the body of the shell 1 is equipped with and can be discharged The relief valve of gas in shell 1.
Further, as shown in Fig. 2, the relief valve includes pressure release bonnet 10 and pressure release valve seat 13, the relief valve Cap 10 is axially arranged with valve rod, and elastic device 11 is cased on valve rod, and the elastic device 11 is stuck in pressure release bonnet 10 and relief valve Between seat 13, the valve rod end is cased with piston 12, and the pressure release valve seat 13 is axially arranged with variable cross-section inner hole, the valve Bar and piston 12 protrude into 13 variable cross-section inner hole of pressure release valve seat, and the piston 12 is matched with 13 variable cross-section inner hole of pressure release valve seat Stop gas outflow, the 13 variable cross-section inner hole of pressure release valve seat is communicated with 1 main airway 16 of shell.
Further, the 13 variable cross-section inner hole of pressure release valve seat is stepped hole, is relatively narrow one on the outside of the stepped hole Side, the piston 12 are wider than relatively narrow stepped hole, can preferably block air outflow in this way.
Further, the 13 variable cross-section inner hole of pressure release valve seat may be trapezoidal hole, on the outside of the trapezoidal hole for compared with Narrow side, the piston 12 are variable cross-section piston, are matched with the variable cross-section inner hole.
Further, the elastic device 11 is spring.
Further, it is integrally formed or by welded connecting that the pressure release valve seat 13, which is with shell 1,.
Further, the pressure release valve seat 13 is detachably connected with shell 1.
Further, the pressure release valve seat 13 passes through screw thread and seal washer 15 and 1 assembly connection of shell.
Further, the pressure release valve seat 13 and shell 1 are fixed locked by fastening screw B 14.
Further, valve opening is radially opened up in the air inflation nozzle connectivity port of the shell 1, is equipped with card in the valve opening The pressurization stop valve of tight aircraft accumulator air inflation nozzle.
Further, the pressurization stop valve includes catch piston 4, sealing rubber ring B 5, spring 6, booster cavity 7 and air guide Pipeline 9, the gas-guide pipeline 9 and booster cavity 7 are arranged in 1 wall of shell, and the gas-guide pipeline 9 is connected to main airway, institute The booster cavity 7 stated is provided with catch piston 4, and the catch piston 4 includes piston rod and piston cap, and the piston rod is cased with Spring 6, the spring 6 are externally provided with sealing rubber ring B5, and piston rod end protrudes into the valve opening, the piston cap diameter Identical as booster cavity diameter of section, the 7 wall both ends of booster cavity are equipped with the positive stop lug boss that limitation catch piston 4 moves.
Further, as shown in figure 3, the air inflation nozzle connectivity port one that the pressurization stop valve is uniformly distributed in shell 1 is enclosed.
As shown in Fig. 2, further, the booster cavity 7 of the pressurization stop valve is by dismountable air inflation nozzle connectivity port End cap and air inflation nozzle connectivity port composition, it is fixed with fastening screw A 2 when assembly.
Further, sealing ring 8 is equipped between the end cap and air inflation nozzle connectivity port.
Further, the fastening screw A2 carries out locking processing.
A kind of inflation switching device of the invention is screwed by screw thread with aircraft accumulator air inflation nozzle and is docked, and passes through sealing Cushion rubber A3 is sealed, and when toward aircraft filling pressurization gas, pressurization gas enters booster cavity 7 by gas-guide pipeline 9, and promotion stops Piston 4 overcomes 6 elastic force of spring to stretch out shell 1, whole device and accumulator air inflation nozzle clamping is locked, guarantee inflating Can not be dismantled under pressurized state in journey, effectively prevent engineering it is with pressure disassembly gas-charging connection when security risk.
After the completion of inflator is made, by the pressure release bonnet 10 of Manual press relief valve, gas passes through variable cross-section inner hole stream Out, can quick overbottom pressure in removal pipe, in no external force or in gas replenishment process, relief valve internal piston 12 is acted in elastic device 11 Under power and overpressure effect, pipeline is blocked rapidly, prevents gas leakage in gas replenishment process.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement Also it should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of inflation switching device, it is characterised in that: including shell (1), main airway (16) and relief valve, the shell (1) it is provided in the axial direction main airway (16), the main airway (16) one end is the inflation for connecting aircraft accumulator air inflation nozzle Mouth connectivity port, the other end are the inflation ports for connecting loading line, and the body of the shell (1), which is equipped with, can be discharged shell (1) relief valve of interior gas.
2. a kind of inflation switching device according to claim 1, it is characterised in that: the relief valve includes pressure release bonnet (10) and pressure release valve seat (13), the pressure release bonnet (10) is axially arranged with valve rod, is cased on valve rod elastic device (11), described Elastic device (11) be stuck between pressure release bonnet (10) and pressure release valve seat (13), the valve rod end is cased with piston (12), The pressure release valve seat (13) is axially arranged with variable cross-section inner hole, and the valve rod and piston (12) protrude into pressure release valve seat (13) change and cut In the inner hole of face, the piston (12) is matched with pressure release valve seat (13) variable cross-section inner hole stops gas outflow, the pressure release Valve seat (13) variable cross-section inner hole is communicated with shell (1) main airway (16).
3. a kind of inflation switching device according to claim 2, it is characterised in that: described pressure release valve seat (13) variable cross-section Inner hole is trapezoidal hole, is relatively narrow side on the outside of the trapezoidal hole, the piston (12) is variable cross-section piston (12), with institute The variable cross-section inner hole stated matches, and the elastic device (11) is spring.
4. a kind of inflation switching device according to claim 2 or 3, it is characterised in that: the pressure release valve seat (13) is It is detachably connected with shell (1).
5. a kind of inflation switching device according to claim 4, it is characterised in that: the pressure release valve seat (13) 13 passes through Screw thread and seal washer (15) and shell (1) assembly connection, the pressure release valve seat (13) and shell (1) pass through fastening screw B (14) fixed locked.
6. a kind of according to claim 1, inflation switching device described in 2,3 or 5, it is characterised in that: the shell (1) Valve opening is radially opened up in air inflation nozzle connectivity port, and the pressurization stop of clamping aircraft accumulator air inflation nozzle is equipped in the valve opening Valve.
7. a kind of inflation switching device according to claim 6, it is characterised in that: the pressurization stop valve includes stop Piston (4), sealing rubber ring B(5), spring (6), booster cavity (7) and gas-guide pipeline (9), the gas-guide pipeline (9) and pressurization Chamber (7) is arranged in shell (1) wall, and the gas-guide pipeline (9) is connected to main airway, and the booster cavity (7) is provided with only Piston (4), the catch piston (4) include piston rod and piston cap, and the piston rod is cased with spring (6), described Spring (6) is externally provided with sealing rubber ring B(5), piston rod end protrudes into the valve opening, the piston cap diameter and booster cavity (7) diameter of section is identical, and the booster cavity (7) wall both ends are equipped with the positive stop lug boss of limitation catch piston (4) movement.
8. a kind of inflation switching device according to claim 6 or 7, it is characterised in that: the pressurization stop valve is uniform The air inflation nozzle connectivity port one for being distributed in shell (1) is enclosed.
9. a kind of inflation switching device according to claim 8, it is characterised in that: the booster cavity of the pressurization stop valve (7) it is made of the end cap and air inflation nozzle connectivity port of dismountable air inflation nozzle connectivity port, it is solid with fastening screw A(2) when assembly Fixed, described fastening screw A(2) carry out locking processing.
10. a kind of inflation switching device according to claim 9, it is characterised in that: the end cap is connected with air inflation nozzle Sealing ring (8) are equipped between port.
CN201910426881.6A 2019-05-22 2019-05-22 A kind of inflation switching device Pending CN110131495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910426881.6A CN110131495A (en) 2019-05-22 2019-05-22 A kind of inflation switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910426881.6A CN110131495A (en) 2019-05-22 2019-05-22 A kind of inflation switching device

Publications (1)

Publication Number Publication Date
CN110131495A true CN110131495A (en) 2019-08-16

Family

ID=67571958

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910426881.6A Pending CN110131495A (en) 2019-05-22 2019-05-22 A kind of inflation switching device

Country Status (1)

Country Link
CN (1) CN110131495A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111038936A (en) * 2019-12-27 2020-04-21 常熟市神力机械制造有限责任公司 Helical blade for shield machine screw conveyer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111038936A (en) * 2019-12-27 2020-04-21 常熟市神力机械制造有限责任公司 Helical blade for shield machine screw conveyer

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