CN208984289U - A kind of air tightness test bolt arrangement - Google Patents
A kind of air tightness test bolt arrangement Download PDFInfo
- Publication number
- CN208984289U CN208984289U CN201821635614.7U CN201821635614U CN208984289U CN 208984289 U CN208984289 U CN 208984289U CN 201821635614 U CN201821635614 U CN 201821635614U CN 208984289 U CN208984289 U CN 208984289U
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- CN
- China
- Prior art keywords
- air tightness
- slot
- tightness test
- bar portion
- test bolt
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- 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.)
- Expired - Fee Related
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000011148 porous material Substances 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000012797 qualification Methods 0.000 abstract description 2
- 230000002950 deficient Effects 0.000 description 26
- 238000010586 diagram Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
A kind of air tightness test bolt arrangement, the air tightness test bolt includes the bar portion on head and threaded section, it is characterized by: the outer rim of air tightness test bolt and/or inside offer connection slot, it is open at one end in head end and/or outer peripheral surface to be connected to slot, another end opening is located on bar portion tail end end face, alternatively, another end opening is located in bar portion threads section.This bolt arrangement can be improved the recall rate of airtight bad part, ensure that the qualification rate and safety in utilization of factory product；It can be transformed using existing bolt, structure is simple, and easy to process and application, processing and use cost are cheap.
Description
Technical field
The utility model relates to tightness test device more particularly to a kind of bolt arrangements for air-tight test.
Background technique
Air-tight test be by a certain enclosure space (comprising temporary enclosed) is inflated/is evacuated to be formed draught head into
Work is widely applied in multiple fields such as space flight, the energy, automobiles in the means of row airtight test.Its accuracy tested, validity
Particularly important, airtight bad products are not as detected and being isolated by air-tight test, it will influence product and use, or even cause tight
It endangers again.
Currently, using conventional stud or high-strength when carrying out airtight detection for the components product with blind hole flange
Degree bolt fastening encapsulation is carried out with cover board to blind hole position after, carry out air-tight test again, still, when components product spiral shell to be measured
It is defective near line blind hole to cause product at tapped blind hole when gas leakage, since existing bolt has certain probability to seal threaded hole
Firmly, cause gas leakage product that cannot be detected in test, to affect the accuracy of detection.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of air tightness test bolt arrangement, the spiral shells
Bolt can ensure that the gas leakage at components product blind hole position during air-tight test with blind hole flange will not be by bolt
Sealing, improves the accuracy of airtight inspection.
The utility model is achieved through the following technical solutions:
A kind of air tightness test bolt arrangement, the air tightness test bolt include the bar on head and threaded section
Portion, it is characterised in that: the outer rim of air tightness test bolt and/or inside offer connection slot, are connected to slot one end
Opening is located on head end and/or outer peripheral surface, and another end opening is located on bar portion tail end end face, alternatively, another end opening position
In in bar portion threads section.
It is defective near components product tapped blind hole to be measured, there are airtight defective regions after connection slot connection
When, during carrying out air-tight test, test gas passes through interiors of products → airtight defective region → tapped blind hole → company
Channel is formed outside through slot hole → product, is triggered airtight equipment alarm, is checked out bad products.
It is open at one end in head end and/or outer peripheral surface to be connected to slot, another end opening is located at bar portion tail end end face
On, outside connection product and the tapped blind hole at bar portion tail end rear, the connectivity structure are suitable for detecting close to tapped blind hole bottom
Airtight defective region；It is located on head end and/or outer peripheral surface alternatively, connection slot is open at one end, another end opening is located at
On bar portion thread segment exposed face, each circle screw thread on thread segment all be connected to slot and be interconnected, it is blind using bolt and screw thread
Fit clearance between hole, the connectivity structure are suitable for detecting the airtight bad area on tapped blind hole bottom and/or side wall
Domain.
Further, the connection slot is one or more.It can be according to the convenience and air-leakage test of processing
Needs flexibly select.
Further, the connection slot is to open up from head end to the inside through hole of bar portion tail end end face.Installation
Afterwards, internal through hole can be connected to the tapped blind hole outside product with bar portion tail end rear, if there are gas for tapped blind hole bottom
Close defective region, internal through hole can be connected outside tapped blind hole bottom and product, thus detect underproof product, and
Close to the airtight defective region of tapped blind hole lateral wall circumference, relatively due to the matching thread of bolt thread section and tapped blind hole
Long, gap is smaller, even if there is gas leakage, is also not easy to escape between the mating surface of the two, therefore the structure is only applicable to detect
Product is close to the airtight defective region of tapped blind hole bottom out, and there are certain limitations.
Further, the connection slot is to open up from head exposed face to the outside in bar portion threads section to run through
Slot.After installation, outside can not only be connected outside tapped blind hole bottom and product through slot, conveniently detect on product close to spiral shell
The airtight defective region of line blind via bottom, moreover, because external each circle screw thread on slot and every thread segment is interconnected,
So if tapped blind hole adjacent sidewalls, there are airtight defective region, the test gas of leakage can be matched by most half-turn screw threads
The fit clearance in conjunction face can reach external through slot, and reach outside product through it, conveniently detect on product close to screw thread
The airtight defective region of blind hole side wall, applicability are stronger.
Further, the outside is more than or equal to the screw thread of bar portion through slot deeply along air tightness test bolt radial slot
Section tooth is high, enters outside through slot from the fit clearance in the face that is threadedly engaged convenient for experimental gas.
Further, the outside is the wire cutting slot axially opened up along air tightness test with bolt through slot.Use line
Cutting mode processing, bolt is fixed to linear cutting equipment clamping zones, and according to diameter of bolt size, in bolt side, processing is outer
Slot is run through in portion, is conducive to processing.The usually external width through slot is about 1-3mm, and depth is about 2-4mm.
Further, the connection slot exposes to air tightness test for a part and is located at bolt outer rim, another part
Bending or inclination connection slot inside air tightness test bolt, are connected to the slot exposed face open at one end positioned at head, separately
It is open at one end to be located in bar portion threads section.The connection slot is equally applicable to detect close to tapped blind hole bottom and/or side
Airtight defective region on wall, but structure is complex.
Further, the connection slot includes that internal intercommunicating pore, external connectivity slot connect with the centre for be connected to the two
Through-hole.Internal intercommunicating pore is used for the conducting outside product, and external connectivity slot is used for on tapped blind hole bottom and/or side wall
The conducting of airtight defective region, intermediate connection hole is for the conducting between internal intercommunicating pore and external connectivity slot.
Further, the internal intercommunicating pore and external connectivity slot are axially opened up along air tightness test with bolt respectively, in
Between intercommunicating pore radially opened up along air tightness test with bolt, formed one rectangular " Z " connection slotted hole structure, it is easy to process.
Further, the internal intercommunicating pore is located at head, and external connectivity slot is located at bar portion, and intermediate connection hole is located at bar
Portion, the close joint with head, so that it is guaranteed that bar portion thread segment can be integrally connected to external connectivity slot.
The utility model has the beneficial effects that:
1, this bolt arrangement can be improved the recall rate of airtight bad part, ensure that the qualification rate and use of factory product
Safety；
2, it can be transformed using existing bolt, structure is simple, and easy to process and application is processed low with use cost
It is honest and clean.
Detailed description of the invention
Fig. 1 is a kind of components product with blind hole flange
Fig. 2 is fit structure schematic diagram of the components product when carrying out air-tight test in bolt and Fig. 1
Fig. 3 is the partial enlargement diagram of Fig. 2
Fig. 4~5 are a kind of air tightness test bolt arrangement schematic diagram with internal through hole
Fig. 6~8 are a kind of with the external air tightness test bolt arrangement schematic diagram for running through slot
Fig. 9~11 are a kind of air tightness test bolt arrangement schematic diagram with connection slot
In Fig. 1~11: 1 is head, and 2 be bar portion, and 3 be internal through hole, and 4 run through slot to be external, and 5 be internal intercommunicating pore, 6
It is intermediate connection hole for external connectivity slot, 7,8 be sealing plate, and 9 be air inlet pipe, and 10 be tapped blind hole, and 11 be flange, and 12 be ventilation
Hole, 13 be cover board, and 14 be airtight defective region.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
A kind of components product as shown in Figure 1 has tapped blind hole 10 and venthole 12 on flange 11.For the product
When carrying out air seal test, before test, it will be sealed in each opening except flange of product by sealing plate 8, bolt be threaded into
Blind hole 10 makes to cover the venthole 12 on flange 11, carries out air seal test after being installed.
When the tapped blind hole 10 of components product nearby it is defective cause product gas leakage at tapped blind hole when, due to common
Bolt has certain probability to seal threaded hole, be easy to cause gas leakage product that cannot be detected in test.
The bolt arrangement of the utility model, the bar portion 2 including head 1 and threaded section, outer rim and/or inside in bolt
One or more connection slot is offered, connection slot is open at one end to be located on 1 end face of head and/or outer peripheral surface, the other end
Opening is located on 2 tail end end face of bar portion, alternatively, another end opening is located in 2 threads section of bar portion, makes bolt in air seal test
The bottom of middle tapped blind hole 10 still with product outside be connected to, alternatively, preventing bolt from sealing tapped blind hole 10, it is ensured that it is airtight not
Good product is detected.
Embodiment 1
As shown in Figures 4 and 5, connection slot is to open up from 1 end face of head to the inside through hole 3 of 2 tail end end face of bar portion.It is interior
Portion's through hole 3 can be the perforated holes of the 1mm or more by drilling processing.After the connection of internal through hole 3, when zero to be measured
It is defective near 10 bottom of tapped blind hole of part product, there are when airtight defective region 14, in the process for carrying out air-tight test
In, test gas passes through outside interiors of products → 14 → tapped blind hole of airtight defective region bottom → inside 3 → product of through hole
Channel is formed, airtight equipment alarm is triggered, is checked out bad products, which is suitable for detecting close to tapped blind hole
The airtight defective region 14 of bottom.
Embodiment 2
Connection slot as can be seen from figures 6 to 8 is to open up from 1 exposed face of head to the outside in 2 threads section of bar portion to pass through
Wears groove 4, outside are high through the thread segment tooth that slot 4 is more than or equal to bar portion 2 along air tightness test bolt radial slot deeply.Outside is passed through
Wears groove 4 can be used wire cutting mode and process, bolt is fixed to linear cutting equipment clamping zone, according to diameter of bolt size,
It is 1-3mm, the slot of depth 2-4mm in bolt side working width.After outside is connected to through slot 4, when components product to be measured
10 bottom of tapped blind hole and/or adjacent sidewalls it is defective, there are when airtight defective region 14, in the mistake for carrying out air-tight test
Cheng Zhong, test gas run through slot 4 by interiors of products → 14 → tapped blind hole of airtight defective region bottom and/or side wall → outside
Channel is formed outside → product, airtight equipment alarm is triggered, is checked out bad products, which is suitable for detection and leans on
Airtight defective region 14 on nearly tapped blind hole bottom and/or side wall.
Embodiment 3
The connection slot as shown in Fig. 9~11 is that a part exposes to air tightness test bolt outer rim, another portion
Bending or inclination connection slot, connection slot of the quartile inside air tightness test bolt are open at one end positioned at the outer of head 1
Show up, another end opening is located in 2 threads section of bar portion, including internal intercommunicating pore 5, external connectivity slot 6 with for being connected to two
The intermediate connection hole 7 of person.Wherein, internal intercommunicating pore 5 and external connectivity slot 6 are axially opened up along air tightness test with bolt respectively,
Intermediate connection hole 7 is radially opened up along air tightness test with bolt；Internal intercommunicating pore 5 is located at head 1, and external connectivity slot 6 is located at bar
Portion 2, intermediate connection hole 7 are located at bar portion 2, the close joint with head 1.Through internal intercommunicating pore 5, external connectivity slot 6 and centre
Intercommunicating pore 7 be connected to after, when 10 bottom of tapped blind hole of components product to be measured and/or adjacent sidewalls it is defective, there are it is airtight not
When good region 14, during carrying out air-tight test, test gas passes through interiors of products → 14 → spiral shell of airtight defective region
Channel is formed outside 5 → product of line blind via bottom and/or side wall → outside connectivity slot 6, intermediate connection hole 7 and internal intercommunicating pore,
Trigger airtight equipment alarm, be checked out bad products, the connectivity structure be suitable for detecting close to tapped blind hole bottom and/or
Airtight defective region 14 on side wall.
The bolt arrangement is applicable not only to have the components product of blind hole flange shown in Fig. 1, is also applied for other shapes
The components product with blind hole flange.
Claims (10)
1. a kind of air tightness test bolt arrangement, the air tightness test bolt includes head (1) and threaded section of bar
Portion (2), it is characterised in that: the outer rim of air tightness test bolt and/or inside offer connection slot, are connected to slot one
End opening is located on head (1) end face and/or outer peripheral surface, and another end opening is located on bar portion (2) tail end end face, alternatively, another
End opening is located in bar portion (2) threads section.
2. air tightness test bolt arrangement according to claim 1, it is characterised in that: the connection slot be one or
Person is multiple.
3. air tightness test bolt arrangement according to claim 1, it is characterised in that: the connection slot is from head
(1) end face is opened up to the inside through hole (3) of bar portion (2) tail end end face.
4. air tightness test bolt arrangement according to claim 1, it is characterised in that: the connection slot is from head
(1) exposed face is opened up to the outside in bar portion (2) threads section through slot (4).
5. air tightness test bolt arrangement according to claim 4, it is characterised in that: slot (4) edge is run through in the outside
The thread segment tooth that air tightness test bolt radial slot is more than or equal to bar portion (2) deeply is high.
6. air tightness test bolt arrangement according to claim 4, it is characterised in that: the outside is through slot (4)
The wire cutting slot axially opened up along air tightness test with bolt.
7. air tightness test bolt arrangement according to claim 1, it is characterised in that: the connection slot is a part
Expose to air tightness test bolt outer rim, another part is located at the bending inside air tightness test bolt or tilts connectivity slot
Hole, is connected to the slot exposed face open at one end positioned at head (1), and another end opening is located in bar portion (2) threads section.
8. air tightness test bolt arrangement according to claim 7, it is characterised in that: the connection slot includes inside
Intercommunicating pore (5), external connectivity slot (6) and the intermediate connection hole (7) for being connected to the two.
9. air tightness test bolt arrangement according to claim 8, it is characterised in that: the internal intercommunicating pore (5) and
External connectivity slot (6) is axially opened up along air tightness test with bolt respectively, and intermediate connection hole (7) are along air tightness test bolt diameter
To opening up.
10. air tightness test bolt arrangement according to claim 8, it is characterised in that: described internal intercommunicating pore (5) position
In head (1), external connectivity slot (6) is located at bar portion (2), and intermediate connection hole (7) are located at bar portion (2), are close with head (1)
Joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821635614.7U CN208984289U (en) | 2018-10-09 | 2018-10-09 | A kind of air tightness test bolt arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821635614.7U CN208984289U (en) | 2018-10-09 | 2018-10-09 | A kind of air tightness test bolt arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208984289U true CN208984289U (en) | 2019-06-14 |
Family
ID=66786734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821635614.7U Expired - Fee Related CN208984289U (en) | 2018-10-09 | 2018-10-09 | A kind of air tightness test bolt arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208984289U (en) |
-
2018
- 2018-10-09 CN CN201821635614.7U patent/CN208984289U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190614 |