CN108896253A - The seal test device and test method of bellows - Google Patents
The seal test device and test method of bellows Download PDFInfo
- Publication number
- CN108896253A CN108896253A CN201810411733.2A CN201810411733A CN108896253A CN 108896253 A CN108896253 A CN 108896253A CN 201810411733 A CN201810411733 A CN 201810411733A CN 108896253 A CN108896253 A CN 108896253A
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- China
- Prior art keywords
- bellows
- crimp head
- attachment base
- seal
- port
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention relates to the seal test device of bellows and test methods.Wherein the seal test device of bellows includes the first attachment base and the second attachment base for being respectively used to connect with the two-port of bellows, and the crimp head of the groove Stop structure for cooperating with the groove on bellows outer peripheral surface along bellows axial direction block and the port for pressing to bellows is equipped on the first and second attachment base；Seal test device further includes crimp head mounting base and the gasket seal for being clipped between crimp head and the port of bellows to be measured, crimp head is threaded in crimp head mounting base on the port gasket seal sealing can be pushed to be crimped onto bellows in rotation, at least a crimp head is equipped with the inflatable interface for connecting gas source, and the gasket seal being adapted to the crimp head for being equipped with inflatable interface is equipped with the inner cavity for diaphragm for passageway and the venthole of inflatable interface.Above scheme solves the problems, such as that existing simple detection device and test method operating efficiency are low.
Description
Technical field
The present invention relates to the seal test device of bellows and test methods.
Background technique
Spiral metal bellows needs to be sealed performance detection, existing spiral metal bellows test method when producing
Usually first spiral metal bellows both ends weld pressure inlet, then by tooling will take over mouth block get up with bellows be total to
With sealing cavity is formed, it is placed in water after pressurizeing in sealing cavity, judges whether tube body leaks according to bubble, reach detection
Ripple pipe whether there is the purpose of leakage defect.This method has following deficiency：1. needing to process for being welded to metal wave
Welding pressure inlet on line pipe port, increases part processing content；2. needing to weld, welding sequence is increased；3. if pipe
Base leakage, then welding pressure inlet not can be recycled, and welding sequence made above is also irreversible, and welding pressure inlet is caused to be scrapped；4.
Due to that can not judge whether pipe is qualified in advance, more accurate control can not also be carried out to required pipe quantity.
Authorization Notice No. is that the Chinese patent of CN203500743U discloses a kind of helical corrugation tubing internal pressure-resistant test company
Binding structure is inserted into solid-wall pipe, the combination of the helical corrugation tubing and solid-wall pipe in the tip inside of helical corrugation tubing
Place is connected by Electric thermal smelting belt, and the contact position of Electric thermal smelting belt and helical corrugation tubing and solid-wall pipe is welded on by plastic welding gun
Together.By adopting the above technical scheme, the connection folder of solid-wall pipe can be used after connecting solid-wall pipe in helical corrugation tubing
Tool, reduces the high expense using helical corrugation tubing fixture, reduces cost greatly.But in above-mentioned Chinese patent
For disclosed test connection structure there is still a need for welding sequence is increased, operating efficiency is low.
Summary of the invention
The object of the present invention is to provide a kind of seal test device of bellows and test methods, existing simple to solve
Detection device and the low problem of test method operating efficiency.
The technical solutions adopted are as follows for the seal test device of bellows in the present invention.
The seal test device of bellows, including the first attachment base for being respectively used to connect with the two-port of bellows and
Two attachment bases are equipped on the first and second attachment base for cooperating with the groove on bellows outer peripheral surface along bellows axial direction block
Groove Stop structure and the port for pressing to bellows crimp head；Seal test device further include crimp head mounting base and
Gasket seal for being clipped between crimp head and the port of bellows to be measured, crimp head are threaded in crimp head mounting base
Gasket seal can be pushed to seal on the port for being crimped onto bellows in rotation, at least a crimp head is equipped with for connecting
The inflatable interface for connecing gas source, the gasket seal being adapted to the crimp head for being equipped with inflatable interface are equipped in diaphragm for passageway
The venthole of chamber and inflatable interface.
Beneficial effect：The present invention by adopting the above technical scheme, passes through the groove Stop structure and wave on the first and second attachment base
The cooperation of line pipe outer peripheral surface upper groove can be realized the axially position to bellows, and be threadedly attached in crimp head mounting base
On crimp head can easily push the end of gasket seal and bellows to be measured to be formed to seal, structure is simple, at low cost,
It is easy to operate, it does not need to increase welding sequence, is conducive to improve operating efficiency.
Crimp head mounting base is equipped with the threaded hole connected for crimp head, the crimp head as a preferred technical solution,
It is connected to one end of threaded hole, the other end of threaded hole is equipped with the bellows connection screw thread screwed in for spiral metal bellows, institute
Groove Stop structure is stated to be formed by bellows connection screw thread.
The thread rotary orientation of the bellows connection screw thread on the first and second attachment base is opposite as a preferred technical solution,.
It can be avoided when the crimp head on the first and second attachment base screws and influence each other using the program, and be convenient for wave
Line pipe is installed on the first and second attachment base.
The major diameter of the bellows connection screw thread is less than the big of the screw thread connected for crimp head as a preferred technical solution,
Diameter.
It is capable of increasing the sealing area of gasket seal using the program, improves the sealing performance of gasket seal.
The gasket seal on first attachment base is sealing ring as a preferred technical solution, on the second attachment base
Gasket seal is the closing gasket for blocking the corresponding end port of bellows, and the crimping of the first attachment base is arranged in inflatable interface
On head.
It is simple using ring structure, it is at low cost, and the inflatable interface, another inflated to bellows is arranged in an attachment base
A attachment base, which blocks bellows, can simplify structure, easy to operate.
The inflatable interface on first attachment base is co-axially located at the pressure of the first attachment base as a preferred technical solution,
On connector.
When connecting loading line on inflatable interface, inflatable interface is co-axially located at can in the crimp head of the first attachment base
Loading line is substantially swung when crimp head being avoided to rotate, convenient for operation.
First and second connection seat position is adjustably arranged on guide rail as a preferred technical solution,.
The technical solutions adopted are as follows for the leakage test method of bellows in the present invention.
The leakage test method of bellows, this method include by the port of bellows in its axially position to attachment base
Step, the step are real by the cell wall block cooperation of the groove on the groove Stop structure and bellows outer peripheral surface on attachment base
Existing, leakage test method further includes gasket seal being arranged in the port of bellows, and be threadedly attached in the pressure on attachment base
Gasket seal is crimped onto the step on the port of bellows by connector.
Bellows is spiral metal bellows as a preferred technical solution, and the port of spiral metal bellows is to pass through
It is realized in the bellows connection screw thread that spinning is arranged on attachment base.
The bellows is filled by the inflatable interface realization coaxially arranged with bellows as a preferred technical solution,
Gas.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment one of the seal test device of bellows in the present invention；
Fig. 2 is the structural schematic diagram that crimp head is inflated in Fig. 1；
Fig. 3 is the structural schematic diagram of the embodiment two of the seal test device of bellows in the present invention.
Component part corresponding to each appended drawing reference is entitled in figure：10- guide rail, the first attachment base of 11-, 12- second
Attachment base, 13- crimp head mounting base, 21- inflate crimp head, and 22- blocks crimp head, 31- sealing ring, and 32- closes gasket, 41-
Threaded hole, 42- bellows connection screw thread, 51- axial flow channel, 52- gas-tpe fitting, 60- inflated hose, 70- spiral metal
Bellows.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
One embodiment of the seal test device of bellows is a kind of for spiral gold as shown in Fig. 1 to 2 in the present invention
The detection device for belonging to the leakage test of bellows, including guide rail 10 and the first attachment base 11 for being assemblied on guide rail 10 of guiding and the
Two attachment bases 12, the first attachment base 11 and the second attachment base 12 are respectively used to connect with the two-port of bellows, the first attachment base
11 and 12 position of the second attachment base be adjustably assemblied on guide rail 10, on the basis of realizing to the support of bellows, Neng Goushi
The bellows of different length is answered, the length of guide rail 10 can be arbitrarily arranged according to actual needs.
First and second attachment base includes the crimp head mounting base 13 of crimp head, gasket seal and swivel nut form, crimp head packet
The closure crimp head 22 for including the inflation crimp head 21 being arranged on the first attachment base 11 and being arranged on the second attachment base 12；Sealing
Gasket uses silicone rubber pad, including and the corresponding sealing ring 31 of inflation crimp head 21 and sealing pad corresponding with crimp head 22 is blocked
Piece 32.Crimp head is connected in the threaded hole 41 of 13 one end of crimp head mounting base, and the other end of crimp head mounting base 13, which is equipped with, to be supplied
The bellows connection screw thread 42 that spiral metal bellows 70 screws in, certainly, in order to be screwed in for spiral metal bellows 70, bellows
The screw pitch of connection screw thread 42 is consistent with the screw pitch of spiral metal bellows 70 to be tested, and the formation of bellows connection screw thread 42 is used for
The groove Stop structure cooperated with the groove on bellows outer peripheral surface along bellows axial direction block.In order to improve the close of gasket seal
Sealing property, the major diameter of the bellows connection screw thread 42 are less than the major diameter of the screw thread connected for crimp head, are capable of increasing gasket
The sealing area of piece.It influences each other when being screwed in order to avoid the crimp head on the first and second attachment base, on the first and second attachment base
The thread rotary orientation of bellows connection screw thread 42 is opposite.Certainly, in other embodiments, the thread rotary orientation of the first and second attachment base
It can be identical.Furthermore a circle is only arranged in above-mentioned bellows connection screw thread 42, connects convenient for bellows it is of course also possible to set
It is set to less than a circle, two circles or more is enclosed or be arranged to more than one.
Spiral metal bellows 70 is inflated in order to realize, the center of the inflation crimp head 21 on the first attachment base 11
Equipped with axial flow channel 51, the end in axial flow channel 51 is equipped with gas-tpe fitting 52, gas-tpe fitting 52 and inflation when use
Hose 60 connects.Since inflation crimp head 21 needs to screw to realize the promotion to sealing ring 31, inflated hose 60 needs to bear
Certain torque, it is therefore proposed that length is at 1 meter or more.
The application method of the seal test device of above-mentioned bellows is as follows, which is also bellows in the present invention
One embodiment of leakage test method.
Firstly, according to length adjustment the first attachment base 11 of spiral metal bellows 70 to be detected, the second attachment base 12
Position on guide rail 10 is connectable to spiral metal bellows 70 between first attachment base 11, the second attachment base 12；Its
It is secondary, the both ends port of spiral metal bellows 70 is screwed in into the bellows connection screw thread 42 in two crimp head mounting bases 13 respectively
Interior, the cell wall of bellows connection screw thread 42 and bellows outer peripheral surface upper groove cooperates along axial block, realizes that bellows is connecting
Positioning on seat, while making inflation crimp head 21, wherein one end pre-contact of sealing ring 31 and bellows, closure crimp head 22,
Close the other end pre-contact of gasket 32 and bellows；Then, make to screw up with a wrench and inflate crimp head 21 and closure crimp head 22
It is sealed to bellows by gasket seal, so that bellows is formed sealing cavity by gasket seal, finally by inflated hose
60 are inflated to test pressure into bellows, device are integrally put into clean water and are sealed test to bellows.
The embodiment two of the seal test device of bellows is as shown in figure 3, the present embodiment and embodiment one in the present invention
The difference is that the axis of inflatable interface and inflation crimp head 21 in the present embodiment is vertically arranged.In other embodiments,
Crimp head on first attachment base 11 and the second attachment base 12 can be all made of the inflation crimp head 21 equipped with inflatable interface.
In the above-described embodiments, bellows is spiral metal bellows 70, on the first and second attachment base for outside bellows
Groove on circumferential surface is to be formed by bellows connection screw thread 42, and bellows is connected along the groove that bellows axial direction block cooperates
Screw thread 42 is wholely set with crimp head.In other embodiments of the invention, groove Stop structure can also be replaced with other
Form, such as the retaining piece being arranged in the groove for being caught on bellows outer peripheral surface, are realized by retaining piece to bellows
The fluting being adapted to ripple pipe diameter can be set on retaining piece, to promote block stability in axially position；Also, retaining piece
The form being embedded in for bellows can be set into, the form snapped on bellows can also be arranged for.Certainly, pass through setting
The groove Stop structure of adaptation, the seal test device and test method of above-mentioned bellows can be used for spiral metal bellows
Except other bellowss.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not limited to this hair
It is bright, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still
The modification for being not required to make the creative labor can be carried out to technical solution documented by foregoing embodiments, or to part
Technical characteristic is equivalently replaced.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement
Deng should all be included in the protection scope of the present invention.
Claims (10)
1. the seal test device of bellows, it is characterised in that：Including be respectively used to connect with the two-port of bellows first
Attachment base and the second attachment base, be equipped on the first and second attachment base for the groove on bellows outer peripheral surface along bellows axis
The crimp head of the groove Stop structure and the port for pressing to bellows that cooperate to block；Seal test device further includes crimping
Head mounting base and the gasket seal for being clipped between crimp head and the port of bellows to be measured, crimp head are threaded in crimping
Gasket seal can be pushed to seal on the port for being crimped onto bellows in rotation in head mounting base, in an at least crimp head
Equipped with the inflatable interface for connecting gas source, the gasket seal being adapted to the crimp head for being equipped with inflatable interface is equipped with for being connected to
The inner cavity of bellows and the venthole of inflatable interface.
2. the seal test device of bellows according to claim 1, it is characterised in that：Crimp head mounting base, which is equipped with, to be supplied
The threaded hole of crimp head connection, the crimp head are connected to one end of threaded hole, and the other end of threaded hole is equipped with for spiral metal
The bellows connection screw thread that bellows screws in, the groove Stop structure are formed by bellows connection screw thread.
3. the seal test device of bellows according to claim 2, it is characterised in that：Wave on first and second attachment base
The thread rotary orientation of line pipe connection screw thread is opposite.
4. the seal test device of bellows according to claim 2, it is characterised in that：The bellows connection screw thread
Major diameter is less than the major diameter of the screw thread connected for crimp head.
5. the seal test device of bellows described in any one according to claim 1-4, it is characterised in that：Described
Gasket seal on a connecting seat is sealing ring, and the gasket seal on the second attachment base is the corresponding end end for blocking bellows
The closing gasket of mouth, inflatable interface are arranged in the crimp head of the first attachment base.
6. the seal test device of bellows according to claim 5, it is characterised in that：Filling on first attachment base
Gas interface is co-axially located in the crimp head of the first attachment base.
7. the seal test device of bellows described in any one according to claim 1-4, it is characterised in that：Described
One, two connection seat positions are adjustably arranged on guide rail.
8. the leakage test method of bellows, it is characterised in that：This method includes arriving the port of bellows along its axially position
Step on attachment base, the step are the cell walls by the groove on the groove Stop structure and bellows outer peripheral surface on attachment base
Block cooperation realizes that leakage test method further includes that gasket seal, and the company of being threadedly attached in is arranged in the port of bellows
Gasket seal is crimped onto the step on the port of bellows by the crimp head on joint chair.
9. the leakage test method of bellows according to claim 8, it is characterised in that：Bellows is spiral metal ripple
Pipe, the port of spiral metal bellows is realized in the bellows connection screw thread being arranged on attachment base by spinning.
10. the leakage test method of bellows according to claim 8 or claim 9, it is characterised in that：The bellows is to pass through
It realizes and inflates with the coaxially arranged inflatable interface of bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810411733.2A CN108896253A (en) | 2018-05-02 | 2018-05-02 | The seal test device and test method of bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810411733.2A CN108896253A (en) | 2018-05-02 | 2018-05-02 | The seal test device and test method of bellows |
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| Publication Number | Publication Date |
|---|---|
| CN108896253A true CN108896253A (en) | 2018-11-27 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810411733.2A Pending CN108896253A (en) | 2018-05-02 | 2018-05-02 | The seal test device and test method of bellows |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839249A (en) * | 2019-03-29 | 2019-06-04 | 江苏亚太轻合金科技股份有限公司 | A kind of aluminium alloy pipe pressure-resistant seal system safety testing device |
| CN110440998A (en) * | 2019-07-30 | 2019-11-12 | 核工业第八研究所 | A kind of composite material of silicon carbide round tube leak rate method for testing performance |
| CN113932977A (en) * | 2021-09-30 | 2022-01-14 | 华勤技术股份有限公司 | Connector detection tool and connector detection system |
| CN114112238A (en) * | 2021-11-18 | 2022-03-01 | 浙江宝森波纹管有限公司 | Metal corrugated pipe air tightness detection device and implementation method thereof |
| CN115452861A (en) * | 2022-08-25 | 2022-12-09 | 安徽威迈光机电科技有限公司 | Corrugated pipe surface crack detection device for spaceflight |
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| CN110440998B (en) * | 2019-07-30 | 2021-10-29 | 核工业第八研究所 | Method for detecting leakage rate performance of silicon carbide composite circular tube |
| CN113932977A (en) * | 2021-09-30 | 2022-01-14 | 华勤技术股份有限公司 | Connector detection tool and connector detection system |
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| CN114112238A (en) * | 2021-11-18 | 2022-03-01 | 浙江宝森波纹管有限公司 | Metal corrugated pipe air tightness detection device and implementation method thereof |
| CN115452861A (en) * | 2022-08-25 | 2022-12-09 | 安徽威迈光机电科技有限公司 | Corrugated pipe surface crack detection device for spaceflight |
| CN115452861B (en) * | 2022-08-25 | 2024-06-14 | 安徽威迈光机电科技有限公司 | Corrugated pipe surface crack detection device for spaceflight |
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Application publication date: 20181127 |
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