CN210462069U - Self-sealing gas pipe joint - Google Patents
Self-sealing gas pipe joint Download PDFInfo
- Publication number
- CN210462069U CN210462069U CN201921409561.1U CN201921409561U CN210462069U CN 210462069 U CN210462069 U CN 210462069U CN 201921409561 U CN201921409561 U CN 201921409561U CN 210462069 U CN210462069 U CN 210462069U
- Authority
- CN
- China
- Prior art keywords
- nut
- sealing
- snap ring
- rear end
- sealing washer
- Prior art date
- 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.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 80
- 238000001125 extrusion Methods 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims description 38
- 230000001808 coupling Effects 0.000 claims description 37
- 238000005859 coupling reaction Methods 0.000 claims description 37
- 239000004033 plastic Substances 0.000 claims description 9
- 241000283216 Phocidae Species 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 230000003014 reinforcing Effects 0.000 claims 1
- 239000006223 plastic coating Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 abstract 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 210000001503 Joints Anatomy 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Abstract
The utility model relates to a self-sealing gas pipe joint, which comprises a nut, a pipe joint body, a snap ring and a sealing ring, wherein the rear end of the nut is used for being sleeved with a corrugated pipe with a plastic coating layer, the front end of the nut is connected with the pipe joint body, the snap ring is clamped outside the front end of the corrugated pipe exposed out of the plastic coating layer, a limiting boss used for limiting the backward movement of the snap ring is arranged in the nut, the sealing ring is clamped outside the front end port of the corrugated pipe, the outer side surface of the sealing ring is of a reducing structure, the rear end of the pipe joint body is clamped between the outer side surface of the sealing ring and the inner wall of the nut, the inner side surface of the rear end of, when the rear end of the pipe joint body is locked towards the front end of the nut, the extrusion force of the pipe joint body to the sealing ring is increased, and therefore the sealing performance between the pipe joint body and the sealing ring and between the sealing ring and the corrugated pipe is enhanced. The utility model discloses use the sealing washer to seal, it is sealed effectual, and the bellows does not need the preparation flange face.
Description
Technical Field
The utility model belongs to the technical field of the coupling technique and specifically relates to a self sealss gas coupling is related to.
Background
The gas pipe is a special pipeline for conveying combustible gas, is a rubber hose with a metal gas pipe hose instead of a traditional buckle mode, and can overcome the defects that the rubber hose is easy to fall off, age and bite insects and has short service life. The gas pipe has the characteristics of convenient installation, reliable connection, corrosion resistance, no gas blockage, good flexibility, long service life, capability of being bent at will without deformation, no gas blockage and the like. When a plurality of gas pipes are butted for use, the gas pipe joints are generally needed.
The existing gas pipe joint is generally provided with a flange at the front end of a corrugated pipe for connection and sealing, the sealing effect is poor, and the problem of gas leakage is easy to generate after long-time use.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a self sealss gas coupling, the technical problem of its solution is that current gas coupling generally sets up the flange at the front end of bellows and is used for connecting sealedly, and sealed effect is poor, uses for a long time and produces the gas leakage problem easily.
In order to solve the technical problem existing in the above, the utility model discloses a following scheme:
the utility model provides a self sealss gas coupling, includes nut (1) and coupling body (5), the rear end of nut (1) is used for cup jointing with bellows (6) that have the covering and mould layer (7), the front end of nut (1) with coupling body (5) are connected, its characterized in that: still include snap ring (3) and sealing washer (4), snap ring (3) joint is bare expose cover mould layer (7) bellows (6) front end outside, be provided with in nut (1) and be used for restricting the spacing boss that snap ring (3) removed backward, sealing washer (4) joint is in the front end port outside of bellows (6), the lateral surface of sealing washer (4) is reducing structure, the lateral surface of sealing washer (4) with the distance between nut (1) inner wall reduces in proper order after to in the past, the rear end joint of coupling body (5) is in the lateral surface of sealing washer (4) with between the inner wall of nut (1), the medial surface of coupling body (5) rear end be with the lateral surface matched with reducing structure of sealing washer (4) for when the rear end of coupling body (5) is to when locking in the front end of nut (1), the extrusion force of the pipe joint body (5) on the sealing ring (4) is increased, so that the sealing performance between the pipe joint body (5) and the sealing ring (4) and between the sealing ring (4) and the corrugated pipe (6) is enhanced.
Further, spacing boss with the contact surface of snap ring (3) is the inclined plane, spacing boss department the internal diameter of nut (1) reduces from the front backward in proper order, makes the rear end of coupling body (5) to when locking in the front end of nut (1), coupling body (5) pass through sealing washer (4) promote snap ring (3) rearward movement, nut (1) inside wall is right the extrusion force increase of snap ring (3), thereby strengthen nut (1) with snap ring (3) and snap ring (3) with the leakproofness between bellows (6).
Further, a plurality of annular grooves matched with the corrugated pipe (6) are formed in the inner wall of the sealing ring (4) and/or the clamping ring (3), so that the inner wall of the sealing ring (4) and/or the clamping ring (3) is tightly attached to the outer side face of the corrugated pipe (6).
Furthermore, the front end medial surface of nut (1) is provided with the internal thread, the rear end lateral surface of coupling body (5) be provided with internal thread matched with external screw thread, coupling body (5) pass through external screw thread screw in nut (1) is interior, be used for compressing tightly sealing washer (4) with snap ring (3).
Furthermore, a single-face leakage detection hole (8) is formed in the side wall of the nut (1) and used for detecting whether gas leaks between the corrugated pipe (6) and the plastic-coated layer (7).
Further, the rear end medial surface of nut (1) with cover and be provided with O type sealing washer (2) between moulding layer (7) for prevent that gas from following the rear end of nut (1) with cover and mould leaking between layer (7), annular sealing washer groove has been seted up to the rear end medial surface of nut (1).
Furthermore, the front end inner pad of the pipe joint body (5) is provided with a sealing gasket (9), and the front end inner side wall of the pipe joint body (5) is provided with an annular limiting platform matched with the sealing gasket (9).
Furthermore, the inner side wall of the plastic-coated layer (7) is provided with a diversion trench along the axial direction thereof for limiting the flow direction of the leaked gas.
Further, the pipe joint body (5) is made of brass.
This self sealss gas coupling has following beneficial effect:
(1) the utility model discloses use the sealing washer to seal, resistant oily, temperature resistant, elasticity are good, and the sealed effectual of repeated installation, pipe fitting long service life, simple to operate, and the bellows need not make the flange face.
(2) The utility model discloses a snap ring and nut and sealing washer all adopt the inclined plane cooperation with the coupling body, along with the screwing up of coupling body for the extrusion force on inclined plane increases, thereby plays sealed and axial locking's dual effect.
Drawings
FIG. 1: the utility model discloses an axial longitudinal section of a self-sealing gas pipe joint embodiment I;
FIG. 2: the utility model discloses axial longitudinal section picture of self sealss gas coupling embodiment two.
Description of reference numerals:
1-a nut; 2-O-ring seal; 3-a snap ring; 4, sealing rings; 5-the pipe joint body; 6, a corrugated pipe; 7-plastic coating; 8-single-side leakage detection hole; 9-sealing washer.
Detailed Description
The present invention will be further explained with reference to fig. 1 and 2 below:
embodiment one, as shown in fig. 1, a self sealss gas coupling, including nut 1, coupling body 5, snap ring 3 and sealing washer 4, the front end inside wall of nut 1 is provided with the internal thread, and the rear end lateral wall of coupling body 5 is provided with the external screw thread, and coupling body 5 is used for compressing tightly sealing washer 4 and snap ring 3 in precession nut 1's the front end through the external screw thread, and the rear end of nut 1 cup joints with bellows 6 that has the layer 7 of covering to mould, and the material of coupling body 5 is the brass.
The snap ring 3 is clamped at the outer side of the front end of the corrugated pipe 6 with the exposed plastic-coated layer 7, the sealing ring 4 is clamped at the outer side of the front end port of the corrugated pipe 6, a plurality of annular grooves matched with the corrugations of the corrugated pipe 6 are arranged on the inner side surfaces of the sealing ring 4 and the snap ring 3, so that the inner side surfaces of the sealing ring 4 and the snap ring 3 can be tightly attached to the corrugated pipe 6, the diameter of the outer side surface of the sealing ring 4 is gradually increased from front to back, so that the distance between the outer side surface of the sealing ring 4 and the inner side surface of the front end of the nut 1 is gradually reduced from front to back, the inner side surface of the rear end of the pipe joint body 5 is a reducing structure matched with the outer side surface of the sealing ring 4, when the pipe joint body 5 is screwed into the front end of the nut 1, the extrusion force of the pipe joint body 5 to the seal ring 4 is gradually increased, thereby enhancing the sealability between the pipe joint body 5 and the gasket 4 and between the gasket 4 and the bellows 6.
Nut 1's middle part medial surface is provided with the spacing boss that is used for restricting 3 rearward movements of snap ring, spacing boss is the inclined plane with snap ring 3's contact surface, the internal diameter of nut 1 of spacing boss department reduces from the front to back in proper order, when making the rear end of coupling body 5 to the front end of nut 1 in locking, coupling body 5 promotes 3 rearward movements of snap ring through sealing washer 4, 1 inside wall of nut increases the extrusion force of snap ring 3, thereby strengthen between nut 1 and the snap ring 3 and the leakproofness between snap ring 3 and the bellows 6.
The inner side wall of the plastic-coated layer 7 is provided with a flow guide groove along the axial direction thereof for limiting the flow direction of leaked gas, the side wall of the nut 1 is provided with a single-face leakage detection hole 8 for detecting whether gas leaks to the corrugated pipe 6 and between the plastic-coated layers 7, the inner side surface of the rear end of the nut 1 and the plastic-coated layer 7 are provided with an O-shaped sealing ring 2 for preventing the gas from leaking from the rear end of the nut 1 and between the plastic-coated layers 7, and the inner side surface of the rear end of the nut 1 is provided with an annular sealing ring groove.
In the second embodiment, as shown in fig. 2, a sealing washer 9 is padded in the front end of the pipe joint body 5, and an annular limiting platform matched with the sealing washer 9 is arranged on the inner side wall of the front end of the pipe joint body 5.
The corrugation depth of the corrugated pipe 6 is larger than that of the common corrugated pipe, and the bending performance, the twisting performance and the tensile strength of the corrugated pipe 6 are improved.
The utility model discloses an assembly mode as follows:
bellows 6 that will have to cover and mould layer 7 passes nut 1, cover the outside of the bellows 6 that moulds layer 7 with the snap ring 3 joint in the naked exposure, 4 joints of sealing washer in the port department outside of the bellows 6 of snap ring front end, pull bellows 6 backward, make the inclined plane contact of the spacing boss in snap ring 3 and the nut 1, in precessing the front end of nut 1 with coupling body 5, be used for compressing tightly snap ring 3 and sealing washer 4 in nut 1, continue to screw coupling body 5 in to nut 1, coupling body 5 extrusion sealing washer 4 is in order to strengthen the leakproofness, and simultaneously, sealing washer 4 extrusion snap ring 3 is backward moved, make 1 extrusion snap ring 3 of nut in order to strengthen the leakproofness.
The present invention has been described in detail with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements of the method concept and the technical solution of the present invention can be made without modification, or the present invention can be directly applied to other occasions without modification, and is within the protection scope of the present invention.
Claims (9)
1. The utility model provides a self sealss gas coupling, includes nut (1) and coupling body (5), the rear end of nut (1) is used for cup jointing with bellows (6) that have the covering and mould layer (7), the front end of nut (1) with coupling body (5) are connected, its characterized in that: still include snap ring (3) and sealing washer (4), snap ring (3) joint is bare expose cover mould layer (7) bellows (6) front end outside, be provided with in nut (1) and be used for restricting the spacing boss that snap ring (3) removed backward, sealing washer (4) joint is in the front end port outside of bellows (6), the lateral surface of sealing washer (4) is reducing structure, the lateral surface of sealing washer (4) with the distance between nut (1) inner wall reduces in proper order after to in the past, the rear end joint of coupling body (5) is in the lateral surface of sealing washer (4) with between the inner wall of nut (1), the medial surface of coupling body (5) rear end be with the lateral surface matched with reducing structure of sealing washer (4) for when the rear end of coupling body (5) is to when locking in the front end of nut (1), the extrusion force of the pipe joint body (5) on the sealing ring (4) is increased, so that the sealing performance between the pipe joint body (5) and the sealing ring (4) and between the sealing ring (4) and the corrugated pipe (6) is enhanced.
2. The self-sealing gas tube joint of claim 1, wherein: spacing boss with the contact surface of snap ring (3) is the inclined plane, spacing boss department the internal diameter of nut (1) reduces from the front backward in proper order, makes the rear end of coupling body (5) to during locking in the front end of nut (1), coupling body (5) are passed through sealing washer (4) promote snap ring (3) rearward movement, nut (1) inside wall is right the extrusion force increase of snap ring (3), thereby reinforcing nut (1) with snap ring (3) and snap ring (3) with the leakproofness between bellows (6).
3. The self-sealing gas line connector as claimed in claim 2, wherein: the inner wall of the sealing ring (4) and/or the snap ring (3) is provided with a plurality of annular grooves matched with the corrugated pipe (6), so that the inner wall of the sealing ring (4) and/or the snap ring (3) is tightly attached to the outer side surface of the corrugated pipe (6).
4. The self-sealing gas tube joint of claim 3, wherein: the front end medial surface of nut (1) is provided with the internal thread, the rear end lateral surface of coupling body (5) be provided with internal thread matched with external screw thread, coupling body (5) pass through external screw thread screw in nut (1) is used for compressing tightly sealing washer (4) with snap ring (3).
5. The self-sealing gas tube joint of claim 4, wherein: a single-face leakage detection hole (8) is formed in the side wall of the nut (1) and used for detecting whether gas leaks between the corrugated pipe (6) and the plastic-coated layer (7).
6. The self-sealing gas tube joint as claimed in any one of claims 1-5, wherein: the rear end medial surface of nut (1) with cover and be provided with O type sealing washer (2) between moulding layer (7) for prevent that gas from following the rear end of nut (1) with cover and mould and leak between layer (7), annular sealing washer groove has been seted up to the rear end medial surface of nut (1).
7. The self-sealing gas tube joint of claim 6, wherein: the pipe joint is characterized in that a sealing washer (9) is padded in the front end of the pipe joint body (5), and an annular limiting platform matched with the sealing washer (9) is arranged on the inner side wall of the front end of the pipe joint body (5).
8. The self-sealing gas tube joint of claim 7, wherein: and a flow guide groove is formed in the inner side wall of the plastic-coated layer (7) along the axial direction of the inner side wall and is used for limiting the flow direction of leaked gas.
9. The self-sealing gas tube joint of claim 8, wherein: the pipe joint body (5) is made of brass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921409561.1U CN210462069U (en) | 2019-08-28 | 2019-08-28 | Self-sealing gas pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921409561.1U CN210462069U (en) | 2019-08-28 | 2019-08-28 | Self-sealing gas pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210462069U true CN210462069U (en) | 2020-05-05 |
Family
ID=70431764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921409561.1U Active CN210462069U (en) | 2019-08-28 | 2019-08-28 | Self-sealing gas pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210462069U (en) |
-
2019
- 2019-08-28 CN CN201921409561.1U patent/CN210462069U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |