CN208420303U - Sealing frock for micro parts helium mass spectrum leak detection - Google Patents
Sealing frock for micro parts helium mass spectrum leak detection Download PDFInfo
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- CN208420303U CN208420303U CN201821258322.6U CN201821258322U CN208420303U CN 208420303 U CN208420303 U CN 208420303U CN 201821258322 U CN201821258322 U CN 201821258322U CN 208420303 U CN208420303 U CN 208420303U
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- interface
- sealing
- detected member
- component
- pressure ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 89
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 36
- 239000001307 helium Substances 0.000 title claims abstract description 36
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000001819 mass spectrum Methods 0.000 title claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004534 cecum Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The utility model provides a kind of sealing frock for micro parts helium mass spectrum leak detection, including vacuum interface component, and the inside of the welding structure that vacuum interface component is integrally formed, vacuum interface component has stair-stepping structural pipe wall；One end of vacuum interface component is downstream, has the 1st interface for connecting helium mass spectrometer leak detector；Its opposite side is upstream end, has the 2nd interface for connecting detected member；Also, the 2nd interface is fastenedly connected by fit sealing component and detected member sealing；There is the channel be connected with the pipe fitting of detected member in the inside of vacuum interface component.Advantage are as follows: (1) sealing frock can repeatedly use, and easy to loading and unloading, sealed reliable；(2) sealing frock structure is simple, and processing cost is lower；(3) sealing frock can fast and accurately judge the reliability of weld seam welding, improve leak detection efficiency, shorten detection time.
Description
Technical field
The utility model relates to a kind of sealing frocks, and in particular to a kind of sealing work for micro parts helium mass spectrum leak detection
Dress.
Background technique
In fields such as power industry, space flight industry, nuclear industry, helium mass spectrum leak detection device is widely used, thus to tested work
The tightness of welding lines situation of part is detected, and guarantees the service performance of examined workpiece.
Common Helium Leak Test is spray helium method, detection method are as follows: examined workpiece is made to be installed to sealing frock
One end, the other end of sealing frock are installed to the air inlet of helium mass spectrometer leak detector, vacuumize, make to the inside of examined workpiece first
It reaches vacuum environment；Then, helium is sprayed to the surface weld of examined workpiece, starts helium mass spectrometer leak detector, so that it is determined that by
The surface weld of workpiece is examined with the presence or absence of leakage.
During entire helium mass spectrum leak detection, the reliability of sealing frock is most important, and the reliability of sealing frock is direct
The judgement whether met the requirements to welded seam is influenced, and is conducive to improve leak detection efficiency.Currently used sealing frock is
Vacuum rubber pipe and vacuum cement have the problem that and are difficult to be formed between (1) vacuum rubber pipe and examined workpiece reliably
It is tightly connected, is easy that there are gaps, to easily cause the erroneous judgement of leak detection；(2) it for small part, is deposited when using vacuum cement
It is inconvenient to use in cleaning problem, influence efficiency of hunting leak.
Utility model content
In view of the defects existing in the prior art, the utility model provides a kind of sealing for micro parts helium mass spectrum leak detection
Tooling can effectively solve the above problems.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of sealing frock for micro parts helium mass spectrum leak detection, including vacuum interface component
(1), the inside of the welding structure that the vacuum interface component (1) is integrally formed, the vacuum interface component (1) has ladder
The structural pipe wall of shape；
One end of the vacuum interface component (1) is downstream, has the 1st interface for connecting helium mass spectrometer leak detector
(1.1)；Its opposite side is upstream end, has the 2nd interface (1.2) for connecting detected member；Also, the 2nd interface
(1.2) it is fastenedly connected by fit sealing component and detected member sealing；Have in the inside of the vacuum interface component (1)
There is the channel be connected with the pipe fitting of the detected member.
Preferably, the fit sealing component is the structure for being fastened and connected with the outer wall of the detected member,
The fit sealing component includes first interface pressure ring (2), first interface screw thread set (3) and first seal (4)；
The first interface pressure ring (2) presses on the opening position of the 2nd interface (1.2) of the vacuum interface component (1)；
The first seal (4) is set between the first interface pressure ring (2) and the mouth inner platform of the 2nd interface (1.2)；Institute
State the outside that first interface screw thread set (3) is placed on the first interface pressure ring (2), and with the 2nd interface (1.2) screw thread
Connection；It opens at the center of the first interface screw thread set (3), the first interface pressure ring (2) and the first seal (4)
If the through-hole (11) for passing through the detected member being mutually communicated.
Preferably, the fit sealing component is the knot for being fastened and connected with the inner hole wall of the detected member
Structure, the fit sealing component include:
Connector fixing sleeve (8), what the connector fixing sleeve (8) was partially disposed in the vacuum interface component (1) the described 2nd connects
In mouth (1.2) and for being axially inserted into the detected member, the connector fixing sleeve (8) has close to described detected member one end
There is flanging structure；
Second interface pressure ring (9), the second interface pressure ring (9) are sheathed on the connector fixing sleeve (8), and described second
Second seal (12) are set between interface pressure ring (9) and the flanging structure of the connector fixing sleeve (8)；
Second interface screw thread set (10), one end of the second interface screw thread set (10) are stuck in described second and connect
The radial outer end of mouth pressure ring (9), opposite side are threadedly coupled with the 2nd interface (1.2) of the vacuum interface component (1).
It preferably, further include tube head seal assembly, the tube head seal assembly includes nut (5), plug ontology (6) and
Three sealing elements (7)；
The plug ontology (6) is set in the inner cavity of the nut (5), and is threadedly coupled with the nut (5)；Institute
It states and the third sealing element (7) is set between nut (5) and the plug ontology (6)；The bottom end of the nut (5), described
The bottom of three sealing elements (7) and the plug ontology (6), open up that the end for the detected member being mutually communicated pierces into is logical
Hole.
Sealing frock provided by the utility model for micro parts helium mass spectrum leak detection has the advantage that
(1) sealing frock can repeatedly use, and easy to loading and unloading, sealed reliable；
(2) sealing frock structure is simple, and processing cost is lower；
(3) sealing frock can fast and accurately judge the reliability of weld seam welding, leak detection efficiency be improved, when shortening detection
Between.
Detailed description of the invention
Fig. 1 is the outer wall fit sealing and detected member one end provided by the utility model being suitable for detected member
For the structural schematic diagram of the sealing frock of cecum；
Fig. 2 is the partial enlarged view of sealing frock and the seal member of detected member in Fig. 1；
Fig. 3 is the outer wall fit sealing and detected member one end provided by the utility model being suitable for detected member
For the structural schematic diagram of the sealing frock of through-hole；
Fig. 4 is the partial enlarged view of tube head seal assembly in Fig. 3；
Fig. 5 is that the structure provided by the utility model suitable for the sealing frock of the inner hole fit sealing of detected member is shown
It is intended to；
Fig. 6 is the inner hole fit sealing and detected member one end provided by the utility model being suitable for detected member
For the structural schematic diagram of the sealing frock of through-hole.
Specific embodiment
The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
In order to solve the problems existing in the prior art, the present inventor is directed to the characteristics of part itself, designs and a kind of meets body
Long-pending small, more than through-hole the sealing frock for micro parts helium mass spectrum leak detection, can simply and easily realize detected member and helium matter
The reliable fit sealing of leak detector is composed, to improve leak detection efficiency, and then reduces leak detection cost.The device is easy to operate, knot
Structure is simple, will not damage to welding.
Specifically, the utility model provides a kind of sealing frock for micro parts helium mass spectrum leak detection, including vacuum connects
The inside of mouth component 1, the welding structure that vacuum interface component 1 is integrally formed, vacuum interface component 1 has stair-stepping tube wall
Structure；
One end of vacuum interface component 1 is downstream, has the 1st interface 1.1 for connecting helium mass spectrometer leak detector, specifically
, the 1st interface is connected with the air inlet of helium mass spectrometer leak detector；Its opposite side is upstream end, is had for connecting detected member
The 2nd interface 1.2；Also, the 2nd interface 1.2 is fastenedly connected by fit sealing component and detected member sealing；In vacuum interface
The inside of component 1 has the channel be connected with the pipe fitting of detected member, it is thus achieved that the pipe fitting of detected member and the inspection of helium mass spectrum
Leak the connection between the air inlet of instrument.
For the design feature of specific detected member, the application devises two kinds of specific fit sealing components altogether, below
Both fit sealing components are discussed in detail respectively:
The first fit sealing component:
The fit sealing component that this example provides is the structure being fastened and connected for the outer wall with detected member, is suitable for
To length, slightly long detected member is attached sealing.
With reference to Fig. 1 and Fig. 2, fit sealing component includes first interface pressure ring 2, first interface screw thread set 3 and first
Sealing element 4；
First interface pressure ring 2 presses on the opening position of the 2nd interface 1.2 of vacuum interface component 1；First seal 4 is set
It is placed between first interface pressure ring 2 and the mouth inner platform of the 2nd interface 1.2；First interface screw thread set 3 has internal screw thread；2nd
The outer wall of interface 1.2 has external screw thread；First interface screw thread set 3 is placed on the outside of first interface pressure ring 2, and connects with the 2nd
The external screw thread of mouth 1.2 is threadedly coupled；It opens at the center of first interface screw thread set 3, first interface pressure ring 2 and first seal 4
If the through-hole 11 for passing through detected member being mutually communicated.
Its application method are as follows: assembly and connection vacuum interface component 1, first interface pressure ring 2, first connect as shown in Figure 1 first
Mouthful screw thread set 3 and first seal 4, in the present embodiment, first seal 4 is o type rubber seal, be can also be certainly
Other sealing elements, the present embodiment is it is not limited here；Then, the through hole end of detected member is inserted into through-hole 11；Then, to
Under screw first interface screw thread set 3, first interface screw thread set 3 be screwed down during, first interface screws
Thread bush 3 moves down, and moves downward to press first interface pressure ring 2；When first interface pressure ring 2 moves downward, pressing
First seal 4；First seal 4 deforms because of being pressed generates sealing effect, due to the center of first seal 4
Through-hole is contacted with the outer wall of detected member, the periphery of first seal 4 and the 2nd interface contact of vacuum interface component 1, therefore,
When first seal 4 is pressed, that is, realize tight between the 2nd interface of vacuum interface component 1 and the outer wall of detected member
Gu sealing.
Next, the 1st interface 1.1 of vacuum interface component 1 is connect with helium mass spectrometer leak detector again.Then tester exists
Helium (helium mass spectrometer leak detector vacuumizes) is sprayed in detected member, if the weld joint welding process of detected member does not reach requirement, helium
Mass-spectrometer leak detector can be judged by detecting the slip of helium.
It should be noted that the first fit sealing component is suitable for the outer circle knot that detected member is the sealed product of rule
The case where structure.
Second of fit sealing component:
The fit sealing component that this example provides is the structure being fastened and connected for the inner hole wall with detected member, is applicable in
In slightly shorter to length or the irregular detected member of outer wall is attached sealing.
Refering to what is shown in Fig. 5, fit sealing component includes:
Connector fixing sleeve 8, connector fixing sleeve 8 are partially disposed in the 2nd interface 1.2 of vacuum interface component 1 and for axial
It is inserted into detected member, close detected member one end of connector fixing sleeve 8 has flanging structure；
Second interface pressure ring 9, second interface pressure ring 9 are sheathed on connector fixing sleeve 8, and second interface pressure ring 9 and connector are solid
Surely second seal 12 is set between the flanging structure of set 8；
One end of second interface screw thread set 10, second interface screw thread set 10 is stuck in the diameter of second interface pressure ring 9
Outward, opposite side is threadedly coupled with the 2nd interface 1.2 of vacuum interface component 1.
Its application method are as follows: assembly and connection vacuum interface component 1, connector fixing sleeve 8, second interface as shown in Figure 5 first
Pressure ring 9, second interface screw thread set 10 and second seal 12；By the 1st interface 1.1 and helium mass spectrum of vacuum interface component 1
Leak detector connection.Then, the through hole end of detected member is inserted into through-hole；Then, second interface is screwed upwards to screw
Thread bush 10 pushes second interface pressure ring 9 is synchronous to rise during second interface screw thread set 10 screws upwards；When
When second interface pressure ring 9 rises, second seal 12 is squeezed, deformation occurs generates sealing effect for second seal, makes second close
The periphery of sealing 12 and the inner hole wall of detected member seal, and the inner circumferential of second seal 12 and the outer wall of connector fixing sleeve 8 seal,
And then realize the sealing between the inner hole wall of detected member and the outer wall of connector fixing sleeve 8.
For the first above-mentioned fit sealing component provided by the present application and second of fit sealing component, when its with it is tested
When one end of part carries out fit sealing, if the other end of detected pieces is blind hole, the structure of Fig. 1 or Fig. 5 can be directlyed adopt i.e.
It can.And if the other end of detected pieces is through-hole, it is required to block the through-hole, therefore, to be easy to use, the application is also mentioned
A kind of accessory is supplied, it may be assumed that tube head seal assembly is blocked for the through-hole to detected pieces.As shown in figure 3, being sealed for tube head
Figure is applied in combination with the first fit sealing component in component；As shown in fig. 6, being tube head seal assembly and second of fit sealing
Figure is applied in combination in component.
It is the structure chart of tube head seal assembly, tube head seal assembly includes that nut 5, plug ontology 6 and third are close such as Fig. 4
Sealing 7；
Nut 5 has internal screw thread, and plug ontology 6 has external screw thread, and plug ontology 6 is set in the inner cavity of nut 5, and with
Nut 5 is threadedly coupled, when rotary nut 5,5 spiral of nut；Third is arranged between nut 5 and plug ontology 6 to seal
Part 7 squeezes third sealing element 7, making third sealing element 7, deformation occurs when 5 spiral of nut；The bottom end of nut 5, third
The bottom of sealing element 7 and plug ontology 6 opens up the through-hole pierced into for the end of detected member being mutually communicated.
Its application method are as follows: it is completed nut 5, plug ontology 6 and third sealing element 7 as shown in Figure 4 first, then,
Then, the part after assembling is inserted in the ventilation end of part to be checked, lock nut.
One kind is described below and specifically uses principle:
Tube head seal assembly is represented with reference to Fig. 6, B, A represents second of fit sealing component provided by the present application.For quilt
Part is examined, size is smaller, many places through-hole, and there are many places to need the weld seam hunted leak, in the figure respectively detected weld a, detected weld
B and detected weld c.Weld seam and the through-hole that need to seal are difficult suitable for such the commonly mode of hunting leak apart from close simultaneously
Structure easily causes erroneous judgement.Therefore, it is necessary to use second of fit sealing component provided by the present application.Its process for using are as follows:
(1) it after assembling second of fit sealing component, is connected on helium mass spectrometer leak detector；
(2) detected pieces are inserted in, screw second interface screw thread set 10, squeeze second seal 12 by screwing, it will
This mouth is sealed；
(3) it after assembling tube head seal assembly, is tightened onto suitable elastic, the ventilation end of detected pieces is directly inserted in, to it
It is sealed；
(4) helium mass spectrometer leak detector is opened, starts to hunt leak, judges whether weld seam is qualified；
(5) after the completion of hunting leak, loaded and unloaded in the following order: tube head seal assembly is removed --- -- detected pieces removal ----
Detected pieces-installation tube head seal assembly is installed --- leak detection；By above process circular leak hunting.
Sealing frock provided by the utility model for micro parts helium mass spectrum leak detection has the advantage that
(1) sealing frock can repeatedly use, and easy to loading and unloading, sealed reliable；
(2) sealing frock structure is simple, and processing cost is lower；
(3) sealing frock can fast and accurately judge the reliability of weld seam welding, leak detection efficiency be improved, when shortening detection
Between.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching should also regard the protection scope of the utility model.
Claims (4)
1. a kind of sealing frock for micro parts helium mass spectrum leak detection, which is characterized in that including vacuum interface component (1), institute
The welding structure that vacuum interface component (1) is integrally formed is stated, the inside of the vacuum interface component (1) has stair-stepping pipe
Wall construction；
One end of the vacuum interface component (1) is downstream, has the 1st interface (1.1) for connecting helium mass spectrometer leak detector；
Its opposite side is upstream end, has the 2nd interface (1.2) for connecting detected member；Also, the 2nd interface (1.2) is logical
Fastening seal assembly is crossed to be fastenedly connected with detected member sealing；Have and institute in the inside of the vacuum interface component (1)
State the channel of the pipe fitting conducting of detected member.
2. the sealing frock according to claim 1 for micro parts helium mass spectrum leak detection, which is characterized in that the fastening
Seal assembly is the structure for being fastened and connected with the outer wall of the detected member, and the fit sealing component includes first
Interface pressure ring (2), first interface screw thread set (3) and first seal (4)；
The first interface pressure ring (2) presses on the opening position of the 2nd interface (1.2) of the vacuum interface component (1)；It is described
First seal (4) is set between the first interface pressure ring (2) and the mouth inner platform of the 2nd interface (1.2)；Described
One interface screw thread set (3) is placed on the outside of the first interface pressure ring (2), and connects with the 2nd interface (1.2) screw thread
It connects；The center of the first interface screw thread set (3), the first interface pressure ring (2) and the first seal (4) opens up
The through-hole (11) for passing through the detected member being mutually communicated.
3. the sealing frock according to claim 1 for micro parts helium mass spectrum leak detection, which is characterized in that the fastening
Seal assembly is the structure for being fastened and connected with the inner hole wall of the detected member, and the fit sealing component includes:
Connector fixing sleeve (8), the connector fixing sleeve (8) are partially disposed in the 2nd interface of the vacuum interface component (1)
(1.2) in and for being axially inserted into the detected member, the connector fixing sleeve (8) has close to described detected member one end
Flanging structure；
Second interface pressure ring (9), the second interface pressure ring (9) are sheathed on the connector fixing sleeve (8), the second interface
Second seal (12) are set between pressure ring (9) and the flanging structure of the connector fixing sleeve (8)；
One end of second interface screw thread set (10), the second interface screw thread set (10) is stuck in the second interface pressure
The radial outer end of ring (9), opposite side are threadedly coupled with the 2nd interface (1.2) of the vacuum interface component (1).
4. the sealing frock according to claim 1 for micro parts helium mass spectrum leak detection, which is characterized in that further include pipe
Head seal assembly, the tube head seal assembly includes nut (5), plug ontology (6) and third sealing element (7)；
The plug ontology (6) is set in the inner cavity of the nut (5), and is threadedly coupled with the nut (5)；In the spiral shell
The third sealing element (7) is set between cap (5) and the plug ontology (6)；The bottom end of the nut (5), the third are close
The bottom of sealing (7) and the plug ontology (6) opens up the through-hole pierced into for the end of the detected member being mutually communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821258322.6U CN208420303U (en) | 2018-08-06 | 2018-08-06 | Sealing frock for micro parts helium mass spectrum leak detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821258322.6U CN208420303U (en) | 2018-08-06 | 2018-08-06 | Sealing frock for micro parts helium mass spectrum leak detection |
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| Publication Number | Publication Date |
|---|---|
| CN208420303U true CN208420303U (en) | 2019-01-22 |
Family
ID=65122278
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821258322.6U Active CN208420303U (en) | 2018-08-06 | 2018-08-06 | Sealing frock for micro parts helium mass spectrum leak detection |
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| Country | Link |
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| CN (1) | CN208420303U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082045A (en) * | 2019-05-31 | 2019-08-02 | 中国原子能科学研究院 | The auxiliary mould fixture of sealing propertytest for cartridge |
| 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 |
| CN112945465A (en) * | 2020-12-29 | 2021-06-11 | 北京无线电计量测试研究所 | Cesium clock stem is with vacuum leak hunting frock |
| CN113049192A (en) * | 2021-03-01 | 2021-06-29 | 中国原子能科学研究院 | Leak detection structure, leak detection device and leak detection method |
-
2018
- 2018-08-06 CN CN201821258322.6U patent/CN208420303U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082045A (en) * | 2019-05-31 | 2019-08-02 | 中国原子能科学研究院 | The auxiliary mould fixture of sealing propertytest for cartridge |
| CN110082045B (en) * | 2019-05-31 | 2023-09-29 | 中国原子能科学研究院 | Auxiliary tool clamp for detecting tightness of cylindrical part |
| 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 |
| CN112945465A (en) * | 2020-12-29 | 2021-06-11 | 北京无线电计量测试研究所 | Cesium clock stem is with vacuum leak hunting frock |
| CN113049192A (en) * | 2021-03-01 | 2021-06-29 | 中国原子能科学研究院 | Leak detection structure, leak detection device and leak detection method |
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