CN109211481A - Welding bellows device for detecting leak point - Google Patents

Welding bellows device for detecting leak point Download PDF

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Publication number
CN109211481A
CN109211481A CN201811358970.3A CN201811358970A CN109211481A CN 109211481 A CN109211481 A CN 109211481A CN 201811358970 A CN201811358970 A CN 201811358970A CN 109211481 A CN109211481 A CN 109211481A
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CN
China
Prior art keywords
plate
bellows
ring type
fixed
type seal
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
CN201811358970.3A
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Chinese (zh)
Inventor
王秀海
马培圣
郝晓亮
曹健
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CETC 13 Research Institute
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CETC 13 Research Institute
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 CETC 13 Research Institute filed Critical CETC 13 Research Institute
Priority to CN201811358970.3A priority Critical patent/CN109211481A/en
Publication of CN109211481A publication Critical patent/CN109211481A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum

Abstract

The present invention provides a kind of welding bellows device for detecting leak point, including upper mounted plate, bottom plate, link mechanism, hold-down mechanism and extraction air pipe;A plurality of spaced upper ring type seal is removably connected on upper mounted plate bottom surface;A plurality of spaced lower ring type seal is removably connected on bottom plate top surface;Link mechanism includes the connecting rod for connecting upper mounted plate and bottom plate, and adjusts the tightening mechanism of connecting rod and upper mounted plate and/or the fixed position of bottom plate;Hold-down mechanism is equipped at least two, is respectively arranged on upper mounted plate and/or bottom plate, including the pressing plate abutted against with the side wall of ripple pipe flange;Extraction air pipe is set on the top surface of upper mounted plate.Welding bellows device for detecting leak point provided by the invention can be sealed fixation, using flexible, fixation to the bellows of different-diameter, different collapsing lengths.

Description

Welding bellows device for detecting leak point
Technical field
The invention belongs to pipeline vacuum leak hunting equipment technical fields, are to be related to a kind of welding bellows leakage more specifically Point detection device.
Background technique
Welding bellows be it is a kind of utilize metal tube flexible and flexible made by precision welding technology, both ends welding Flange forms bellows group, can so answer external needs reciprocating together with other moving components.Welding bellows It is big with stroke, the characteristics of good airproof performance, it is able to achieve the exchange of atmosphere and vacuum environment, is widely used in semiconductor and sets The fields such as standby, aerospace.
Welding bellows must do stringent performing leak test before being mounted on equipment, if the welding bellows in equipment Occur to leak to be also required to disassemble to carry out leak detection test, to determine that leak source is repaired.Because welding bellows tube wall is thin, flexible Amount is big, in leak detection needs that welding bellows is fixed, to prevent from compressing and distort.
Welding bellows device for detecting leak point in the prior art includes upper mounted plate, bottom plate, and is fixedly connected The connecting rod of upper mounted plate and bottom plate, upper mounted plate and bottom plate are equipped with groove, and two end flanges of bellows are equipped with Seal groove, embedded sealing ring between flange sealing trough and fixed plate groove, so that bellows is fixed.
Welding bellows device for detecting leak point in the prior art predominantly detects fixed dimension and ripple pipe flange must be certainly The bellows of type with sealing ring, leak detection different size model needs replacing different leakage detection apparatus, and leakage detection apparatus does not have Versatility is not able to satisfy the demand hunted leak to plurality of specifications bellows, and be equipped with excessive particular detection device both without Ji, and it is unfavorable for the rapidity and convenience of maintenance.
In addition, some leak sources of welding bellows only just will appear in specific telescopic location in maintenance, hunting leak It hunts leak in the process sometimes for the different telescopic locations to welding bellows, and in the prior art for being fixedly welded ripple The distance between two fixed plates of pipe be it is fixed, be not able to satisfy above-mentioned detection demand.
Summary of the invention
The purpose of the present invention is to provide a kind of welding bellows device for detecting leak point, it is intended to which solution exists in the prior art Be not able to satisfy to plurality of specifications bellows carry out hunt leak and the technology that bellows difference telescopic location is hunted leak cannot be asked Topic.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of welding bellows device for detecting leak point is provided, Include:
Upper mounted plate is removably connected with a plurality of interval setting on bottom surface and upper ring type seal that radius is sequentially increased, The central point of a plurality of upper ring type seal is overlapped;The upper ring type seal is used for and bellows flanged joint;
Bottom plate is removably connected with a plurality of interval setting on top surface and lower ring type seal that radius is sequentially increased, The central point of a plurality of lower ring type seal is overlapped, and the lower ring type seal is used for and bellows flanged joint;
Link mechanism, the connecting rod including connecting fixed plate and the bottom plate, and adjust the connection The tightening mechanism of bar and the fixed position of fixed plate and/or the bottom plate;The connecting rod is equipped at least two;
Hold-down mechanism is equipped at least two, is respectively arranged on fixed plate and/or the bottom plate, including The pressing plate abutted against with the side wall of ripple pipe flange;
Extraction air pipe is set on the top surface of fixed plate, for connecting leak detector or gas source.
Further, the pressing plate is arc panel;The hold-down mechanism further includes the mobile bar connecting with the pressing plate, set Fixing sleeve in the mobile bar;The central axis of the center line of the fixing sleeve and the mobile bar;The fixation Set is connect with fixed plate or the bottom plate.
Further, the hold-down mechanism further includes the fixed link in the fixing sleeve, and is sleeved on described Adapter sleeve in fixed link;The centerline collineation of the center line of the fixed link and the fixing sleeve;
First through hole is respectively equipped on fixed plate, the bottom plate, it is logical that the fixed link passes through described first Hole, the fixing sleeve, the adapter sleeve are located at the both ends of the first through hole.
Further, fixed plate, be equipped at least two at equal intervals respectively on the bottom plate and be angularly distributed The hold-down mechanism.
Further, the link mechanism further includes two screw rods for connecting fixed plate Yu the bottom plate; The tightening mechanism is to be set on the screw rod to tighten nut;It is described to tighten nut and fixed plate end face or described Bottom plate end face abuts.
Further, it is set on fixed plate there are two symmetrically arranged upper connecting ear, in each upper connecting ear It is equipped with the second through-hole, the upper end of the screw rod passes through second through-hole;It is set with described in two on each screw rod Nut is tightened, and two tighten nut and abut against respectively with the upper surface of the upper connecting ear, lower end surface;
It is set on the bottom plate there are two symmetrically arranged lower connecting ear, is equipped in each lower connecting ear blind Hole, the lower end of the screw rod are fixed in the blind hole.
Further, the extraction air pipe includes the suction interface for connecting leak detector, and for connecting gas source Adapter.
The beneficial effect of welding bellows device for detecting leak point provided by the invention is: compared with prior art, this hair Bright welding bellows device for detecting leak point, upper mounted plate be equipped with a plurality of upper ring type seal, bottom plate be equipped with it is a plurality of under Ring type seal, every upper ring type seal, every lower ring type seal can be correspondingly connected with a kind of ripple pipe flange of specification, from And make the device that can fix the bellows of different size model, so that the device is had versatility;In addition, connecting rod is by tightening The spacing of upper mounted plate and bottom plate is adjusted in mechanism, and then adjusts the collapsing length of bellows, so that the device be made to meet The requirement hunted leak to bellows difference telescopic location;Furthermore the device is equipped with hold-down mechanism and is used for ripple pipe flange pressure Tightly, limitation flange is mobile, to make flange fixation.
Welding bellows device for detecting leak point provided by the invention can be to the bellows of different-diameter, different collapsing lengths It is sealed fixation, using flexible, fixation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of welding bellows device for detecting leak point provided in an embodiment of the present invention;
Fig. 2 is the structural schematic diagram of the upper mounted plate of welding bellows device for detecting leak point provided in an embodiment of the present invention;
Fig. 3 is the structural schematic diagram of the bottom plate of welding bellows device for detecting leak point provided in an embodiment of the present invention;
Fig. 4 is the structural schematic diagram of the hold-down mechanism of welding bellows device for detecting leak point provided in an embodiment of the present invention.
In figure: 10, upper mounted plate;11, upper ring type seal;12, upper connecting ear;13, the second through-hole;14, first through hole; 20, bottom plate;21, lower ring type seal;22, lower connecting ear;23, blind hole;30, link mechanism;31, connecting rod;32, it tightens Nut;40, hold-down mechanism;41, pressing plate;42, mobile bar;43, fixing sleeve;44, fixed link;45, adapter sleeve;50, extraction tracheae Road;51, suction interface;52, adapter;60, bellows;61, flange.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only To explain the present invention, it is not intended to limit the present invention.
Referring to Fig. 1, existing be illustrated welding bellows device for detecting leak point provided by the invention.The welding ripple Pipe device for detecting leak point, including upper mounted plate 10, bottom plate 20, link mechanism 30, hold-down mechanism 40 and extraction air pipe 50.
The upper ring type seal that a plurality of interval is arranged and radius is sequentially increased is removably connected on 10 bottom surface of upper mounted plate 11, the central point of a plurality of upper ring type seal 11 is overlapped, referring to Fig.2, upper ring type seal 11 is made of silastic material, on Ring type seal 11 with the flange 61 of bellows 60 for connecting.A plurality of interval is removably connected on 20 top surface of bottom plate to set It sets and lower ring type seal 21 that radius is sequentially increased, the central point of a plurality of lower ring type seal 21 is overlapped, refering to Fig. 3, lower ring Shape sealing ring 21 is made of silastic material, and lower ring type seal 21 with the flange 61 of bellows 60 for connecting.
Link mechanism 30 include connection upper mounted plate 10 and bottom plate 20 connecting rod 31, and adjust connecting rod 31 and Upper mounted plate 10 and/or the tightening mechanism of the fixed position of bottom plate 20.Hold-down mechanism 40 is equipped at least two, is respectively arranged at On upper mounted plate 10 and/or bottom plate 20, including the pressing plate 41 abutted against with the side wall of flange 61.Extraction air pipe 50 is arranged In on the top surface of upper mounted plate 10, for connecting leak detector or gas source.
Specifically, 10 bottom surface of upper mounted plate is equipped with a plurality of upper annular groove, and upper 11 top of ring type seal is flush-mounted in upper In annular groove.The central point of a plurality of upper ring type seal 11 is overlapped with the central point of upper mounted plate 10, every upper ring packing The lower part of circle 11 can correspond in a kind of seal groove of 60 flange 61 of bellows of specification.20 top surface of bottom plate is equipped with A plurality of lower annular groove, lower 21 lower part of ring type seal is in lower annular groove.The center of a plurality of lower ring type seal 21 Point is overlapped with the central point of bottom plate 20, and the top of every lower ring type seal 21 can correspond to the ripple flush-mounted in a kind of specification In the seal groove of 60 flange 61 of pipe.
Before bellows 60 and upper mounted plate 10, bottom plate 20 are installed, a plurality of upper ring type seal 11 can be all flush-mounted in Upper mounted plate 10, a plurality of lower ring type seal 21 can be all on bottom plates 20, when installation, as long as by the close of flange 61 Sealing groove is inserted in upper ring type seal 11 compatible with 61 size of the flange, on lower ring type seal 21, due to upper annular Sealing ring 11, lower ring type seal 21 have elasticity, in addition to nested upper ring type seal 11, lower ring type seal 21, remaining Upper ring type seal 11, lower ring type seal 21 are compressed by flange 61 respectively, will not influence upper mounted plate 10, bottom plate 20 with The connection of flange 61.
It, can also be on upper mounted plate 10, bottom plate 20 only before bellows 60 and upper mounted plate 10, bottom plate 20 are installed It is embedded in upper ring type seal 11 corresponding with 61 size of flange, lower ring type seal 21.
The process of the fixation bellows 60 of welding bellows device for detecting leak point provided by the invention is as follows:
The seal groove of 60 liang of end flanges 61 of bellows is nested in upper ring type seal 11, lower ring type seal respectively first On 21.Then upper mounted plate 10 and bottom plate 20 are connected using connecting rod 31, using tightening mechanism adjust connecting rod 31 with it is upper Fixed plate 10 and/or with the fixation position of bottom plate 20 and fasten, i.e. adjusting connecting rod 31 is located at upper mounted plate 10 under Length between fixed plate 20 makes the telescopic location of bellows 60 meet leak detection test to adjust the collapsing length of bellows 60 Demand, and the position of connecting rod 31 can be fixed in tightening mechanism, so that flange 61 is by being axially secured in a press.Finally adjust The fixation position for saving hold-down mechanism 40, by the side wall of 41 supported flange 61 of pressing plate, so that flange 61 is by being radially secured in a press.
Welding bellows device for detecting leak point provided by the invention, compared with prior art, upper mounted plate 10 are equipped with more Ring type seal 11 on item, bottom plate 20 are equipped with a plurality of lower ring type seal 21, every upper ring type seal 11, under every Ring type seal 21 can be correspondingly connected with a kind of ripple pipe flange 61 of specification, so that the device can fix different size model Bellows 60, so that the device is had versatility;In addition, connecting rod 31 by tightening mechanism be adjusted upper mounted plate 10 with it is lower solid The spacing of fixed board 20, and then the collapsing length of bellows 60 is adjusted, so that the device be made to meet flexible positions different to bellows 60 Set the requirement hunted leak;Furthermore the device is equipped with hold-down mechanism 40 for compressing ripple pipe flange 61, limits 61 diameter of flange To movement, so that 61 fixation of flange.
Welding bellows device for detecting leak point provided by the invention can be to the bellows of different-diameter, different collapsing lengths It is sealed fixation, using flexible, fixation.
Hold-down mechanism 40 applies radial pressure to flange 61, is moved radially with limiting flange 61, in order to keep flange 61 radial Stress balance, as a kind of specific embodiment of welding bellows device for detecting leak point provided by the invention, upper mounted plate 10, It is equipped at least two hold-down mechanisms 40 on bottom plate 20 at equal intervals respectively, refering to fig. 1.And multiple hold-down mechanisms 40 angularly divide Cloth, so that 61 radial force of flange balances.
Specifically, pressing plate 41 is arc panel, and the lateral surface of intrados and flange 61 fits.Due to the wave of different size The diameter of line pipe flange 61 is different, to be bonded pressing plate 41 completely with flange 61, needs pressing plate 41 can be along the diameter of flange 61 To movement, to achieve the goals above, a kind of specific implementation as welding bellows device for detecting leak point provided by the invention Mode, hold-down mechanism 40 further include the mobile bar 42 connecting with pressing plate 41 and the fixing sleeve 43 being sleeved in mobile bar 42, are moved The center line of lever 42 is radial parallel with flange 61, the center line of mobile bar 42 and the central axis of fixing sleeve 43;It is fixed Set 43 is connect with upper mounted plate 10, bottom plate 20.Fixing sleeve 43 is equipped with radial through-hole, and mobile bar 42 passes through radial through-hole, And can be moved along fixing sleeve 43, thus it is mobile with dynamic pressure plate 41, so that pressing plate 41 is bonded with flange 61 and supported flange 61.Specifically Ground, can be to be threadedly coupled between mobile bar 42 and fixing sleeve 43, and moving in rotation bar 42 can make pressing plate 41 mobile.
In order to be stably connected with hold-down mechanism 40 with upper mounted plate 10, bottom plate 20, as welding provided by the invention A kind of specific embodiment of bellows device for detecting leak point, hold-down mechanism 40 further include the fixed link in fixing sleeve 43 44, and the adapter sleeve 45 being sleeved in fixed link 44, the center line of fixed link 44 and the centerline collineation of fixing sleeve 43, it please join Fig. 4 is read, first through hole 14 is respectively equipped on upper mounted plate 10, bottom plate 20, fixed link 44 passes through first through hole 14, fixing sleeve 43, adapter sleeve 45 is located at the both ends of first through hole 14.Specifically, adapter sleeve 45 can be used with fixed link 44 and be threadedly coupled, Fixed link 44 can be fixed in first through hole 14 by adapter sleeve 45.
Hold-down mechanism 40 can also apply axis to upper mounted plate 10, bottom plate 20 other than applying radial force to flange 61 On the one hand Xiang Li, i.e. adapter sleeve 45 can fix the position of fixed link 44, on the other hand can also apply to upper mounted plate 10 and be pressed downward Power applies upward pressure to bottom plate 20, compresses two fixed plates, further compresses two flanges 61.
Referring to Fig. 1, a kind of specific embodiment as welding bellows device for detecting leak point provided by the invention, even Extension bar 31 is screw rod, if there are two.Tightening mechanism is to be set on screw rod to tighten nut 32;Tighten nut 32 and upper mounted plate 10 end faces or 20 end face of bottom plate abut.
Specifically, it sets on upper mounted plate 10 there are two symmetrically arranged upper connecting ear 12, is all provided in each upper connecting ear 12 There is the second through-hole 13, the upper end of screw rod passes through the second through-hole 13;It is set with two on each screw rod and tightens nut 32, and two Nut 32 is tightened to abut against with the upper surface of upper connecting ear 12, lower end surface respectively.It is symmetrical arranged there are two being set on bottom plate 20 Lower connecting ear 22, be equipped with blind hole 23 in each lower connecting ear 22, the lower end of screw rod is fixed in blind hole 23.Screw rod with it is upper The fixation position of fixed plate 10 can be adjusted by tightening nut 32.When the leak source for needing to detect the different telescopic locations of bellows 60 When, that is, when needing to adjust the length of bellows 60, need to only back out 10 top surface of upper mounted plate tightens nut 32, mobile upper mounted plate 10, so that upper mounted plate 10 is in desired detection position, then screw on removed from upper mounted plate 10 tighten nut 32, and twist Two on dynamic screw rod tighten nut 32, are in close contact the two with the upper surface of upper mounted plate 10, lower end surface respectively.Even The structure of linkage 30 is simple, convenient for operation.
Referring to Fig. 1, a kind of specific embodiment as welding bellows device for detecting leak point provided by the invention, takes out Blowdown piping 50 includes suction interface 51 and adapter 52.Suction interface 51 connects leak detector, to being vacuumized inside bellows 60, To carry out negative pressure leakage detection to bellows 60.Adapter 52 connects gas source, to 60 inner inflatable of bellows, thus to bellows 60 Carry out positive pressure leak detection.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (8)

1. welding bellows device for detecting leak point characterized by comprising
Upper mounted plate is removably connected with a plurality of interval setting on bottom surface and upper ring type seal that radius is sequentially increased, a plurality of The central point of the upper ring type seal is overlapped, and the upper ring type seal is used for and bellows flanged joint;
Bottom plate is removably connected with a plurality of interval setting on top surface and lower ring type seal that radius is sequentially increased, a plurality of The central point of the lower ring type seal is overlapped, and the lower ring type seal is used for and bellows flanged joint;
Link mechanism, the connecting rod including connecting fixed plate and the bottom plate, and adjust the connecting rod and Fixed plate and/or the tightening mechanism of the fixed position of the bottom plate;The connecting rod is equipped at least two;
Hold-down mechanism, be equipped at least two, be respectively arranged on fixed plate and/or the bottom plate, including with wave The pressing plate that the side wall of line pipe flange abuts against;
Extraction air pipe is set on the top surface of fixed plate, for connecting leak detector or gas source.
2. welding bellows device for detecting leak point as described in claim 1, it is characterised in that: the pressing plate is arc panel;Institute State the fixing sleeve that hold-down mechanism further includes the mobile bar connecting with the pressing plate, is sleeved in the mobile bar;The fixing sleeve Center line and the mobile bar central axis;The fixing sleeve is connect with fixed plate or the bottom plate.
3. welding bellows device for detecting leak point as claimed in claim 2, it is characterised in that: the hold-down mechanism further includes embedding Loaded on the fixed link in the fixing sleeve, and the adapter sleeve being sleeved in the fixed link;The center line of the fixed link with The centerline collineation of the fixing sleeve;
First through hole is respectively equipped on fixed plate, the bottom plate, the fixed link passes through the first through hole, institute State fixing sleeve, the adapter sleeve is located at the both ends of the first through hole.
4. welding bellows device for detecting leak point as claimed in claim 3, it is characterised in that: fixed plate, it is described under It is equipped at least two hold-down mechanisms in fixed plate at equal intervals respectively.
5. such as welding bellows device for detecting leak point of any of claims 1-4, it is characterised in that: the connecting rod For screw rod, if there are two;The tightening mechanism is to be set on the screw rod to tighten nut;It is described tighten nut and it is described on Fixed plate end face or the bottom plate end face abut.
6. welding bellows device for detecting leak point as claimed in claim 5, it is characterised in that: fixed plate is equipped with two A symmetrically arranged upper connecting ear, the second through-hole is equipped in each upper connecting ear, and the upper end of the screw rod passes through described Second through-hole;Tighten nut described in being set with two on each screw rod, and two tighten nut respectively with the upper company Upper surface, the lower end surface of lug abut against;
It is set on the bottom plate there are two symmetrically arranged lower connecting ear, is equipped with blind hole in each lower connecting ear, institute The lower end for stating screw rod is fixed in the blind hole.
7. the welding bellows device for detecting leak point as described in any one of claim 1-4 or 6, it is characterised in that: the pumping Blowdown piping includes the suction interface for connecting leak detector, and the adapter for connecting gas source.
8. welding bellows device for detecting leak point as claimed in claim 5, it is characterised in that: the extraction air pipe includes using In the suction interface of connection leak detector, and the adapter for connecting gas source.
CN201811358970.3A 2018-11-15 2018-11-15 Welding bellows device for detecting leak point Pending CN109211481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811358970.3A CN109211481A (en) 2018-11-15 2018-11-15 Welding bellows device for detecting leak point

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811358970.3A CN109211481A (en) 2018-11-15 2018-11-15 Welding bellows device for detecting leak point

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Publication Number Publication Date
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Application Number Title Priority Date Filing Date
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Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110631769A (en) * 2019-09-24 2019-12-31 中国航发航空科技股份有限公司 Convenient sealing test device and test method for engine corrugated pipe
CN111122075A (en) * 2019-12-20 2020-05-08 贵州电网有限责任公司 Device and method for detecting air tightness of oil conservator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110631769A (en) * 2019-09-24 2019-12-31 中国航发航空科技股份有限公司 Convenient sealing test device and test method for engine corrugated pipe
CN111122075A (en) * 2019-12-20 2020-05-08 贵州电网有限责任公司 Device and method for detecting air tightness of oil conservator

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