CN208457433U - Seal nipple is used in a kind of plastic conduit hydraulic test test - Google Patents
Seal nipple is used in a kind of plastic conduit hydraulic test test Download PDFInfo
- Publication number
- CN208457433U CN208457433U CN201820814526.7U CN201820814526U CN208457433U CN 208457433 U CN208457433 U CN 208457433U CN 201820814526 U CN201820814526 U CN 201820814526U CN 208457433 U CN208457433 U CN 208457433U
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- Prior art keywords
- collet
- pressing sleeve
- ring
- seal nipple
- test
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Abstract
The utility model relates to seal nipple technical fields, more particularly, to a kind of plastic conduit hydraulic test test seal nipple.Including pipeline, joint body, collet, pressing sleeve and O-ring, the collet, pressing sleeve, O-ring and joint body are sequentially connected, and the pipeline is threadedly coupled with pressing sleeve and pipe end extends to joint body, and the contact surface of the pressing sleeve and collet is the conical surface.The risk that pipeline is easy to appear rupture and leakage is reduced, the service life of O-ring is extended, reduces installation difficulty.
Description
Technical field
The utility model relates to seal nipple technical fields, test more particularly, to a kind of plastic conduit hydraulic test
Use seal nipple.
Background technique
For fluid conveying thermoplastic plastic pipe, hydraulic test is one indispensable to product service performance
Test item.In the middle, it is necessary to test tubing both ends are sealed using seal nipple.Seal nipple is entirely to test
Important one of test fittings in journey, and it is easiest to the accessory to go wrong.Show such seal nipple in use, nothing
The appearance that method avoids is such as: seal nipple is easy leak, influences leakproofness；O-ring service life is low etc..
Its end face of the pressing sleeve now used uses right-angle plane to design, by squeezing O-ring to reach sealing effect.But this
Kind design meeting is so that pipeline is easy to appear rupture and leakage and the service life of O-ring and reduces.
Utility model content
The utility model in order to overcome at least one of the drawbacks of the prior art described above, provides a kind of hydraulic examination of plastic conduit
Seal nipple is tried out in test, is reduced the risk that pipeline is easy to appear rupture and leakage, is extended the service life of O-ring, reduce
Installation difficulty.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of plastic conduit hydraulic test survey
Seal nipple on probation, including pipeline, joint body, collet, pressing sleeve and O-ring, the collet, pressing sleeve, O-ring and connector sheet
Body is sequentially connected, and the pipeline is threadedly coupled with pressing sleeve and pipe end extends to joint body, the pressing sleeve and collet
Contact surface be the conical surface.
Further, the taper of the conical surface is 60 °.
Further, the collet end is equipped with the first button, and joint body end is equipped with the second button, and described the
One button and the mutual snapping of the second button.
Further, the collet and pressing sleeve contact surface are the conical surface cooperated with collet.
Further, second button is equipped with the card slot for accommodating O-ring and pressing sleeve.
Further, the tapered tip is equipped with one for contradicting the resistance surface of collet, the resistance surface perpendicular to
Conduit axis.
Compared with prior art, beneficial effect is:
1, the utility model can reduce the risk that pipeline is easy to appear rupture and leakage, extend the service life of O-ring；
2, the rational design of pressing sleeve frustoconical bevel angle can make radial stress and axial stress in ideal simultaneously in assembly
OK range in, reduce installation difficulty, avoid O-ring pressure overload, extend O-ring service life.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.Being given for example only property of positional relationship is described in attached drawing
Illustrate, should not be understood as the limitation to this patent.
As shown in Figure 1, a kind of plastic conduit hydraulic test test seal nipple, including pipeline 1, joint body 3, collet
2, pressing sleeve 5 and O-ring 4, the collet 2, pressing sleeve 5, O-ring 4 and joint body 3 are sequentially connected, the pipeline 1 and pressing sleeve
5 are threadedly coupled and 1 end of pipeline extends to joint body 3, and the contact surface of the pressing sleeve 5 and collet 2 is the conical surface.
Wherein, the taper of the conical surface is set as 60 °, if 5 end face of pressing sleeve uses the design of right-angle plane, pipeline 1 can be made to hold
The service life for rupture and leakage and O-ring 4 easily occur reduces.Firstly, because when tubular product sample and joint body 3 assemble, by
It is firmly excessive in tightening nut, it may result in and occur slight crack after contacting between tubular product sample and joint body 3, and traditional pipe
Connector is often in the higher environment of intensity, the problems such as rupture of pipeline 1 and leakage can therefore occurs, while returning maintenance work band
Carry out very big trouble.On the other hand, the phenomenon that O-ring 4 will appear compression stress relaxation under by prolonged excessive compression,
Elastic recovery capability disappears, and causes the O-ring 4 after pressure release to be plastically deformed, just will appear drainage in use next time.In turn
Higher compressing force is needed to be sealed, 4 rigid deformation of O-ring is just more serious.Under such vicious circle, the use of O-ring 4
Service life greatly reduces, and needs frequently to replace collet 2 and 5 contact surface of pressing sleeve is also configured as the conical surface cooperated with collet 2.Therefore it needs
Taper is set.When frustoconical bevel angle is too small, radial stress can be very big when assembly, and axial stress is too small, is tightening clamp nut 6
When need use very big strength, just can achieve ideal axial stress, make pressing sleeve 5 to joint body 3 compress O-ring 4.But
At this point, radial stress equally will increase, powerful radial stress is easy to cause surface impression occur pressing sleeve 5, or even can not
The rigid deformation of recovery.When frustoconical bevel angle is too big, when assembly, axial compressive force is very big, and radial pressure is too small.Although powerful axis
Pressing sleeve 5 is made to be easier to compress O-ring 4 to joint body 3 to pressure, but axial compressive force is too small, clamp nut 6 is not easy to turn round
Tightly.Bigger torsion is needed in order to tighten clamp nut 6, when radial pressure meets matching requirements, while the axial compressive force increased
It is easy for causing stress overload to O-ring 4, influences O-ring 4 and be easy leak and shorten the working life.Therefore taper is set as 60 °
It can make radial stress and axial stress in ideal OK range simultaneously in assembly, reduce installation difficulty, avoid O-shaped
4 pressure overloads are enclosed, 4 service life of O-ring is extended.
In the present embodiment, 2 end of collet is equipped with the first button, and 3 end of joint body is equipped with the second button, institute
The first button and the mutual snapping of the second button stated.When pipeline 1 is screwed out joint body 3, screw thread will drive collet 2 far from connecing
Head ontology 3, therefore the first button of setting and the second button can limit the relative motion between collet 2 and joint body 3, avoid
When screwing out pipeline 1, collet 2 falls off, while being also used for for O-ring 4 and pressing sleeve 5 being pressed between collet 2 and joint body 3, O-shaped
Circle 4 and pressing sleeve 5 are accommodated in the card slot on the second button, avoid falling off.
Tapered tip is equipped with one for contradicting the resistance surface of collet 2, and the resistance surface is perpendicular to 1 axis of pipeline.It contradicts
Face can limit the position of pressing sleeve 5, avoid generating sliding between the conical surface and collet 2 when pressing sleeve 5 compresses O-ring 4, causing to press
5 displacement of set.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (6)
1. a kind of plastic conduit hydraulic test test seal nipple, which is characterized in that including pipeline (1), joint body (3),
Collet (2), pressing sleeve (5) and O-ring (4), the collet (2), pressing sleeve (5), O-ring (4) and joint body (3) successively connect
It connects, the pipeline (1) is threadedly coupled with pressing sleeve (5) and pipeline (1) end extends to joint body (3), the pressing sleeve (5)
Contact surface with collet (2) is the conical surface.
2. a kind of plastic conduit hydraulic test test seal nipple according to claim 1, which is characterized in that described
The taper of the conical surface is 60 °.
3. a kind of plastic conduit hydraulic test test seal nipple according to claim 1, which is characterized in that described
Collet (2) end is equipped with the first button, and joint body (3) end is equipped with the second button, first button and the second button
Mutual snapping.
4. a kind of plastic conduit hydraulic test test seal nipple according to claim 1, which is characterized in that described
Collet (2) and pressing sleeve (5) contact surface are the conical surface cooperated with collet (2).
5. a kind of plastic conduit hydraulic test test seal nipple according to claim 3, which is characterized in that described
Second button is equipped with the card slot for accommodating O-ring (4) and pressing sleeve (5).
6. a kind of plastic conduit hydraulic test test seal nipple according to claim 2, which is characterized in that described
Tapered tip is equipped with one for contradicting the resistance surface of collet (2), and the resistance surface is perpendicular to pipeline (1) axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820814526.7U CN208457433U (en) | 2018-05-29 | 2018-05-29 | Seal nipple is used in a kind of plastic conduit hydraulic test test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820814526.7U CN208457433U (en) | 2018-05-29 | 2018-05-29 | Seal nipple is used in a kind of plastic conduit hydraulic test test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208457433U true CN208457433U (en) | 2019-02-01 |
Family
ID=65150004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820814526.7U Active CN208457433U (en) | 2018-05-29 | 2018-05-29 | Seal nipple is used in a kind of plastic conduit hydraulic test test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208457433U (en) |
-
2018
- 2018-05-29 CN CN201820814526.7U patent/CN208457433U/en active Active
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| GR01 | Patent grant |