CN202204653U

CN202204653U - Adapting device for airtight inspection

Info

Publication number: CN202204653U
Application number: CN2011203165239U
Authority: CN
Inventors: 白宽; 李云鹏
Original assignee: BEIJING XINFENG MACHINERY FACTORY
Current assignee: Beijing Aerospace Xinfeng Machinery Equipment Co Ltd
Priority date: 2011-08-26
Filing date: 2011-08-26
Publication date: 2012-04-25
Anticipated expiration: 2021-08-26

Abstract

The utility model provides an adapting device for inflation pressure measurement. The device is used for the inflation and pressure measurement of storage and transportation barrels in the field of aerospace. The device comprises a sleeve (1), a sealing ring (2), a pipe connecting opening (3) and a clamping mechanism (4) for clamping an inflation opening of the barrel, wherein the sealing ring (2) is arranged in the sleeve (1), and is made from an elastic material; the pipe connecting opening (3) is in threaded connection with the sleeve (1); and the clamping mechanism (4) is movably connected with the sleeve (1). The adapting device can be conveniently arranged and clamped on the inflation opening, a movable core column is pushed away, a path which is formed by an inflation pressure measurement device, the adapting device and the inside of the barrel is well sealed, and resource waste is avoided.

Description

A kind of switching device that is used for airtight inspection

Technical field

The utility model relates to a kind of switching device.In particular, the utility model is a kind of switching device that is used for airtight inspection.

Background technology

In fields such as Aero-Space; Some cylindrical shell that is used for accumulating there is the requirement of airtight or inner pressurize, when cylindrical shell being inflated, during pressure measurement, normally PMU will being inflated and cylindrical shell is tightly connected; Make its inner path that forms, make barrel form certain pressure through the inflation pressurization again.Because barrel need be inflated and pressurize; Usually cylindrical shell is provided with to inflate and chews; Inside is chewed in inflation has movable stem stem; Movable stem stem position peace function is divided into normally closed position and is communicated with the position, makes cylindrical shell be in the connected sum closed state with inflating between the PMU through stem stem mobile, realizes inflation and pressurize, the pressure measurement of product cylindrical shell to be measured.Since the inflation chew the slide core rod structure; Making the pipeline of inflating PMU directly chew to be connected with inflation inflates; Therefore between inflation PMU and cylindrical shell, need a kind of switching device; This kind device can promote to inflate to be chewed movable stem stem and causes and be communicated with the position and make inflation PMU, switching device, barrel form the path that connects, thereby inflate and pressure measurement.

The utility model content

The purpose of the utility model provides a kind of switching device that is used to inflate pressure measurement, can conveniently install and be clamped in inflation and chew, and the path sealing of pushing movable stem stem open and inflation PMU, switching device, barrel being formed is good, does not waste resource.The technical scheme of the utility model is following:

The switching device that the utility model provides comprises sleeve pipe 1, O-ring seal 2, take over and chew 3, be used to clamp the clamp system 4 that inflation is chewed, and wherein clamp system 4 comprises paw 41, parking lamp 42, spring 43, and clamp system 4 flexibly connects with sleeve pipe 1.

Sleeve pipe 1 interior forward end has unthreaded hole, is enclosed within inflation and chews, and there is annular groove at the middle part; The rear end has with taking over chews 3 internal threads that are connected, and the length of internal and external screw thread can guarantee that 3 adapters when being tightened on the sleeve pipe are chewed in adapter chews 3 end face and can compress O-ring seal 2, and O-ring seal 2 is processed for resilient material; Be installed in the annular groove, there is boss sleeve pipe 1 outside, and clamp system 4 flexibly connects with boss; Otch is arranged on the boss, and unthreaded hole connects in otch and the sleeve pipe 1, and parking lamp 42 is connected on the boss of sleeve pipe 1 through active pin shaft; Spring 43 is installed on the boss, and spring 43 supports the lower surface of parking lamp, and paw 41 1 ends stretch into the otch other end and parking lamp 42 flexibly connects; Pull parking lamp 42 up and down and can drive paw 41 and stretch into along otch and stretch out, when not pulling parking lamp, because the anchorage force of spring 43; Parking lamp 42 is in the extreme position of upwards pulling, and this moment, paw 41 stretched into the degree of depth maximum of otch, goed deep in the endoporus of sleeve pipe 1; When pulling parking lamp 42 downwards, spring 43 is in compressive state, drives the endoporus that paw 41 withdraws from sleeve pipe 1.

Adapter is chewed 3 and is the ladder tubulose; One end has external thread to be connected with sleeve pipe 1; On the center near externally threaded end face columnar projections is arranged; Have on the protruding side face with taking over and chew the hole that 3 endoporus connect, take over and chew 3 the other end and be connected with the pipeline of PMU, it is hexa-prism that 3 circumferential surface sections is chewed in adapter.

Further, O-ring seal 2 adopts rubber to process, and thickness is not less than 2 millimeters.

Further, there is axle boss inside, and boss side surfaces is stretched out at the axle two ends, and two springs 43 are fixed on the axle in the side of boss, and the end support of spring is lived parking lamp 42; Perhaps circular groove is arranged at the boss top, and a spring 43 is installed in the groove, and end support is lived parking lamp 42.

Further, the bottom portion that paw 41 stretches into otch is a concave arc shape, can tighten the screw thread that inflation is chewed.

Further, take over and to chew 3 big end parts and make hexa-prism, be convenient to control.

Chew movable stem stem that 3 columnar projections chews inflation pushes away normally closed position and chews through the 4 chucking inflations of clamping machine ditch through adapter; Switching device and inflation are chewed be connected firmly and then make inflation PMU, switching device, barrel to form the path of sealing, easy to operate.

Description of drawings

Fig. 1 is that switching device partly cuts open structural representation;

Fig. 2 is the clamp system synoptic diagram;

Embodiment

Through instance the utility model is done further explanation below; But it should be noted that; The purpose of publicizing and implementing example is to help further to understand the utility model; But it will be appreciated by those skilled in the art that: in the spirit and scope that do not break away from the utility model and appended claim, various replacements and to revise all be possible.Therefore, the utility model should not be limited to the disclosed content of embodiment, and the utility model requires the scope of protection to be as the criterion with the scope that claims define.

Specific embodiment

During installation, adapter is chewed 3 be screwed in the sleeve pipe 1, take over the O-ring seal 2 chew in 3 the screw thread end face squeezing bushing 1 this moment.

During inflation, the pipeline that will inflate PMU earlier is enclosed within to take over and chews on 3, compresses parking lamp 42; Paw 41 is upspring, and the inflation that sleeve pipe 1 is enclosed within cylindrical shell is chewed, and the convexity that promotion sleeve pipe 1 is chewed on 3 adapter inwardly advances the movable stem stem that inflation is chewed gradually; Push away normally closed position, at this moment, the end face crush seal circle 2 that inflation is chewed; At this moment cylindrical shell, switching device and inflation PMU form the gas circuit of a connection, unclamp parking lamp 42 at last, drive paw 41 and stretch into sleeve pipe 1 endoporus automatically and block inflation and chew; Control inflation is chewed and is in sealing state and does not come off, and can inflate and pressure measurement this moment.

Claims

1. switching device that is used for airtight inspection; It is characterized in that; Comprise sleeve pipe (1), O-ring seal (2), take over and chew (3) and be used to clamp the clamp system (4) that inflation is chewed; Wherein O-ring seal (2) is processed by resilient material in the inside of sleeve pipe (1), and adapter is chewed (3) and is threaded with sleeve pipe (1), and clamp system (4) flexibly connects with sleeve pipe (1).

2. the switching device that is used for airtight inspection as claimed in claim 1 is characterized in that, sleeve pipe (1) interior forward end is enclosed within inflation and has chewed unthreaded hole, and there is the annular groove of installation O-ring seal (2) at the middle part, and the rear end has chews the internal thread that (3) are connected with adapter; There is boss sleeve pipe (1) outside, has on the boss and the endoporus otch that connects, and clamp system (4) flexibly connects with boss; Adapter is chewed (3) and is the ladder tubulose, and an end has the external thread that is connected with sleeve pipe (1), and columnar projections is arranged on the center of externally threaded end face, and the hole of chewing the perforation of (1) endoporus with adapter is arranged on the protruding side face.

3. the switching device that is used for airtight inspection as claimed in claim 2; It is characterized in that; Clamp system (4) comprises paw (41), parking lamp (42) and spring (43); Wherein parking lamp (42) is connected on sleeve pipe (1) boss through active pin shaft, and an end of paw (41) stretches into the otch other end and parking lamp (42) flexibly connects, and spring (43) is installed on the boss.

4. the switching device that is used for airtight inspection as claimed in claim 3 it is characterized in that O-ring seal (2) adopts rubber to process, and thickness is not less than 2 millimeters.

5. the switching device that is used for airtight inspection as claimed in claim 4 is characterized in that there is axle boss inside, and boss side surfaces is stretched out at the axle two ends, on the two ends of axle, is fixedly connected with two springs (43).

6. the switching device that is used for airtight inspection as claimed in claim 4 is characterized in that circular groove is arranged at the boss top, in groove, is placed with spring (43).

7. like claim 4 or the 5 or 6 described switching devices that are used for airtight inspection, it is characterized in that the bottom portion that paw (41) stretches into otch is a concave arc shape.

8. the switching device that is used for airtight inspection as claimed in claim 7 is characterized in that, taking over the circumferential surface sections of chewing (3) is hexa-prism.