CN207133022U - A kind of sylphon seal performance test apparatus - Google Patents

A kind of sylphon seal performance test apparatus Download PDF

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Publication number
CN207133022U
CN207133022U CN201721141742.1U CN201721141742U CN207133022U CN 207133022 U CN207133022 U CN 207133022U CN 201721141742 U CN201721141742 U CN 201721141742U CN 207133022 U CN207133022 U CN 207133022U
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China
Prior art keywords
bellows
plate
clip
welded
sealing ring
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Active
Application number
CN201721141742.1U
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Chinese (zh)
Inventor
王雪
杨志新
黄乃宁
张文良
宋林红
赫斌
张秀华
张大林
陈雷
任文远
廖震宇
邓军
张海波
王军
王涌
樊文国
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Shenyang Academy of Instrumentation Science Co Ltd
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Shenyang Academy of Instrumentation Science Co Ltd
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Priority to CN201721141742.1U priority Critical patent/CN207133022U/en
Application granted granted Critical
Publication of CN207133022U publication Critical patent/CN207133022U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A kind of sylphon seal performance test apparatus, including test-bed, the closure that is engaged with tubing to be measured;The test-bed is the U-shape structure being made up of bottom plate and the baffle plate being welded on bottom plate;The closure includes two pieces of outer plates, and the boss being engaged with pipe internal diameter to be measured is provided with outer plate, and the concave station for being used for placing sealing ring is provided with boss, sealing ring is socketed with concave station;Also blocked up including telescopic core;The core blocking package includes two pieces of clip plates and the bellows being welded among two pieces of clip plates, the guide pipe being welded to connect with unilateral clip plate is provided with bellows interior, flexible stomata is provided with the upper position on the inside of bellows of clip plate, the position on the outside of bellows is provided with detection stomata;The clip plate edge is provided with flange, and the flange is engaged with sealing ring.The utility model structure overcomes that existing apparatus is complicated, and operating efficiency is low, the high deficiency of labor intensity of operating staff.

Description

A kind of sylphon seal performance test apparatus
Technical field
A kind of bellows component seal tightness test correlative technology field is the utility model is related to, it is specifically a kind of to be applicable In the experimental rig of bellows component seal tightness test.
Background technology
Bellows is a kind of flexibility, thin-walled, has transverse wave pipe tubular partses.Its existing elastic characteristic has sealing special again Property, can produce under external force axially, it is angular, lateral, and combinations thereof displacement, the characteristic of good seal performance.In machinery, boat The various fields such as sky, space flight are widely used.
The seal tightness test of currently known bellows component, inside and outside generally use two pressing plates be bolted clamp it is close Seal seals, respectively seal bellows upper and lower ends, it is middle by screw rod connect anti-bellows be stretched it is excessive.It can so detect The sealing of bellows component, but operation is very inconvenient, and test efficiency is low, it is necessary to is operated by 2 people, labor intensity is high.
Utility model content
The purpose of this utility model is to provide a kind of sylphon seal performance test apparatus, to overcome existing apparatus structure to answer Miscellaneous, operating efficiency is low, the high deficiency of labor intensity of operating staff.
The technical scheme in the invention for solving the technical problem is:A kind of sylphon seal performance test dress Put, including test-bed, the closure that is engaged with tubing to be measured;
The test-bed is the U-shape structure being made up of bottom plate and the baffle plate being welded on bottom plate;
The closure includes two pieces of outer plates, the boss being engaged with pipe internal diameter to be measured is provided with outer plate, convex Platform is provided with the concave station for being used for placing sealing ring, and sealing ring is socketed with concave station;
Also blocked up including telescopic core;The core blocking package includes two pieces of clip plates and the ripple being welded among two pieces of clip plates Pipe, the guide pipe being welded to connect with unilateral clip plate is provided with bellows interior, in the upper position on the inside of bellows of clip plate Put and be provided with flexible stomata, the position on the outside of bellows is provided with detection stomata;The clip plate edge is provided with flange, the flange It is engaged with sealing ring.
Further:Side shield is also welded with bottom plate.
Further:The sealing ring is provided with a chamfering, and the wedge-shaped push rod being engaged with chamfering is provided with flange.
The beneficial effects of the utility model are:The utility model structure adds bellows between two clip plates, utilizes The scalability of bellows, thrust is produced to the sealing ring among two pressing plates by elongation of the bellows after by internal pressure, so as to Have the function that sealing.The effect of this experimental rig is simple in construction, easy to operate, efficiency high, and labor intensity is low.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model;
Fig. 2 is the zoomed-in view of one embodiment at A in Fig. 1.
Number explanation in figure:1 be bottom plate, 2 be baffle plate, 3 be outer plate, 4 be sealing ring, 5 be clip plate, 6 be bellows, 7 it is guide pipe, 8 be flexible stomata, 9 be detection stomata, 10 be flange, 101 be push rod, 11 be side shield, 12 is tubing to be measured.
Embodiment
It is as shown in Figure 1 a kind of sylphon seal performance test apparatus of the utility model structure, including U-shaped test-bed, The closure and telescopic core being engaged with tubing to be measured are blocked up;
The test-bed includes bottom plate 1 and is welded on two pieces of baffle plates 2 of both sides on bottom plate, U-shaped structure after welding, uses In placement and fixed tubing;
The closure includes two pieces of outer plates 3, and the boss 31 being engaged with the internal diameter of tubing 12 to be measured is provided with outer plate, The concave station 32 for being used for placing sealing ring is provided with boss, the step-like structure to attenuate step by step is formed, is socketed with concave station close Seal 4;
The core blocking package includes two pieces of clip plates 5 and the bellows 6 being welded among two pieces of clip plates, is set in bellows interior There is the guide pipe 7 being welded to connect with unilateral clip plate, flexible stomata 8 be provided with the upper position on the inside of bellows of clip plate, Position on the outside of bellows is provided with detection stomata 9;The clip plate edge is provided with flange 10, and flange is towards corresponding outer Baffle plate, the flange form a collar, and its radial thickness is highly corresponding with sealing ring.
Preferably:Side shield 11 is also welded with bottom plate, tubing to be measured upper and lower both sides during experiment can be prevented Produce displacement and deformation.
Preferably:The sealing ring rectangular cross-section, chamfering is provided with one side, is provided with flange and is engaged with chamfering Wedge-shaped push rod 101, during being compressed to sealing ring also can be inserted between sealing ring and concave station, make sealing ring produce one Upward displacement, with adapt to tubing to be measured because compression internal diameter become it is big and caused by space, so as to provide relatively reliable sealing.
Preferably:Also include a secondary guide pipe that inserting conjunction is slided with guide pipe, secondary guide pipe one end is welded on another internal pressure On plate, the other end is inserted in guide pipe, and both are engaged diameter, relative can be slided.The effect of guide pipe is in two Pressing plate provides support force and fixation, and blocks up the stifled bellows of supporting-core when external pressure is more than internal pressure in core and prevent that its is recessed Fall into, two guide pipes, which are engaged, makes support and fixation more reliable, while also makes the direction of motion of two clip plates controllable, substantially remains in On one straight line, and then the spacing generation deviation to sealing ring is prevented, ensure that sealing effectiveness.
The course of work of the present utility model is as follows:The bellows to be measured of suitable length is intercepted, core blocking is entered inside pipe, will Two outside plates insert bellows both sides to be measured after putting sealing ring and integrally put between two baffle plates of test-bed respectively.Will be flexible Stomata and detection stomata are connected with source of the gas, that is, complete assembly working, be ready for testing.
After on-test, first pass through flexible stomata and be passed through compressed air to the stifled inside of core, core blocks up internal pressure increase, because of two Bellows among block clip plate can produce certain flexible, and under internally pressure promotes, two clip plates flex outward, so as to Turnup structure is propped up sealing ring, sealing ring compressed, have the function that sealing bellows to be checked, finally by detection stomata to Compressed air is passed through in the stifled cavity between bellows and bellows to be measured of core(Or water filling), carry out sealing propertytest.Now lead to The gas that enters while a pressure is also produced to part of the clip plate in cavity, caused by during the direction of this pressure and core are stifled The direction of pressure is identical, has further ensured that the extruding to sealing ring is fixed, so as to ensure that the reliable of experimental rig sealing Property.In addition, in this structure, flange compressing sealing ring, make its deformation, and pressure is bigger, sealed ring deformation to be measured is bigger, sealing Can be more preferable, while the mouth of pipe slight deformation caused by pressure can also be supplemented, it ensure that the reliability of sealing.In experimentation, Need to insert the whole device including test-bed in water when detecting using air pressure, can be in air when being detected using hydraulic pressure Middle progress.
The stretcher strain that the present apparatus blocks up bellows using core makes flange crush seal circle reach fixed and sealing effect, should Device is applied to the bellows longitudinal seam sealing propertytest that inside diameter of bel is more than 40mm.Internal diameter 85mm bellowss are completed at present Detection, accuracy of detection about with helium leak rate equipment 1 × 10-7Pa.m3/ s is corresponding(The device detects leak-free bellows, in helium Inspected by random samples on leak test plant, maximum leak rate is less than or equal to 1 × 10-7Pa.m3/s), achieve good effect.In addition, this reality Simple and reasonable with new structure, in light weight, easy to operate, labor intensity is low and sealed reliable, substantially increases operation effect The accuracy of rate and result.

Claims (3)

1. a kind of sylphon seal performance test apparatus, including test-bed, the closure that is engaged with tubing to be measured, its feature It is:
The test-bed is the U-shape structure being made up of bottom plate and the baffle plate being welded on bottom plate;
The closure includes two pieces of outer plates, the boss being engaged with pipe internal diameter to be measured is provided with outer plate, on boss Provided with the concave station for placing sealing ring, sealing ring is socketed with concave station;
Also blocked up including telescopic core;The core blocking package includes two pieces of clip plates and the bellows being welded among two pieces of clip plates, The guide pipe being welded to connect with unilateral clip plate is provided with bellows interior, is opened in the upper position on the inside of bellows of clip plate There is flexible stomata, the position on the outside of bellows is provided with detection stomata;The clip plate edge is provided with flange, the flange with it is close Seal is engaged.
2. sylphon seal performance test apparatus as claimed in claim 1, it is characterized in that:Side block is also welded with bottom plate Plate.
3. sylphon seal performance test apparatus as claimed in claim 1 or 2, it is characterized in that:The sealing ring is provided with one Chamfering, the wedge-shaped push rod being engaged with chamfering is provided with flange.
CN201721141742.1U 2017-09-07 2017-09-07 A kind of sylphon seal performance test apparatus Active CN207133022U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721141742.1U CN207133022U (en) 2017-09-07 2017-09-07 A kind of sylphon seal performance test apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721141742.1U CN207133022U (en) 2017-09-07 2017-09-07 A kind of sylphon seal performance test apparatus

Publications (1)

Publication Number Publication Date
CN207133022U true CN207133022U (en) 2018-03-23

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Application Number Title Priority Date Filing Date
CN201721141742.1U Active CN207133022U (en) 2017-09-07 2017-09-07 A kind of sylphon seal performance test apparatus

Country Status (1)

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CN (1) CN207133022U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108896253A (en) * 2018-05-02 2018-11-27 河南航天液压气动技术有限公司 The seal test device and test method of bellows

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108896253A (en) * 2018-05-02 2018-11-27 河南航天液压气动技术有限公司 The seal test device and test method of bellows

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