CN207122674U - A kind of seamless welding structure of steel-plastic composite pressure pipe - Google Patents

A kind of seamless welding structure of steel-plastic composite pressure pipe Download PDF

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Publication number
CN207122674U
CN207122674U CN201720817240.XU CN201720817240U CN207122674U CN 207122674 U CN207122674 U CN 207122674U CN 201720817240 U CN201720817240 U CN 201720817240U CN 207122674 U CN207122674 U CN 207122674U
Authority
CN
China
Prior art keywords
steel
plastic
pressure pipe
composite pressure
internal ring
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.)
Expired - Fee Related
Application number
CN201720817240.XU
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Chinese (zh)
Inventor
王泽宇
屠奔宽
屠洪涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shengzhou Kangyu plastic composite pipe factory
Original Assignee
王泽宇
屠奔宽
屠洪涛
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 王泽宇, 屠奔宽, 屠洪涛 filed Critical 王泽宇
Priority to CN201720817240.XU priority Critical patent/CN207122674U/en
Application granted granted Critical
Publication of CN207122674U publication Critical patent/CN207122674U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of seamless welding structure of steel-plastic composite pressure pipe, it is including the steel-plastic composite pressure pipe material with interior outer plastic layer and middle steel layer and with an at least internal ring portion, the plastic pipe of one outer portion and an annular socket joint chamber, the internal diameter of internal ring portion from inside to port at become larger, steel-plastic composite pressure pipe material inserts annular socket joint intracavitary, internal ring portion is equipped with ring bush on its inwall, the outer end of this ring bush is bendingly fixed on the outer end of internal ring portion outwardly, resilient sleeve is installed between internal ring portion and ring bush, and its outer end of resilient sleeve is alignd with the outer end of internal ring portion.When steel-plastic composite pressure pipe material melts with plastic pipe electromagnetism, the internal ring portion of soft state bears the squeezing action from resilient sleeve to promote the seamless frit seal of inner plastic layer of the internal ring portion of plastic pipe and steel-plastic composite pressure pipe material, the sunken and caused welding gap of discount vibram outlet is lost using solving steel-plastic composite pressure pipe material objective reality after such scheme, improves welding quality.

Description

A kind of seamless welding structure of steel-plastic composite pressure pipe
【Technical field】
A kind of seamless welding structure of steel-plastic composite pressure pipe is the utility model is related to, belongs to pipeline fusion techniques field.
【Background technology】
In the construction of pipeline engineering, steel-plastic composite pressure pipe material is difficult to really realize that forming tightening seal with plastic pipe melts Connect, the inserted terminal of steel-plastic composite pressure pipe material inevitably has welding gap with the internal ring portion of plastic pipe, so as to occur Seepage, discount vibram outlet is lost due to steel-plastic composite pressure pipe material objective reality and falls into (for example being caused by manufacture, transportation etc.), welding Gap will be uncontrollable, so as to influence welding quality.
How steel-plastic composite pressure pipe material and plastic pipe between reliable seamless tightening seal welding is promoted, and this is pipeline industry One technical barrier on boundary, applicant pass through unremitting effort with great concentration, and the application is caused in this context.
【Utility model content】
For above-mentioned the shortcomings of the prior art, the utility model provides a kind of seamless welding knot of steel-plastic composite pressure pipe Structure, it can ensure that seamless welding between the inner plastic layer of the internal ring portion of plastic pipe and steel-plastic composite pressure pipe material, improves Welding quality.
Therefore, the utility model provides following technical scheme:
A kind of seamless welding structure of steel-plastic composite pressure pipe, including plastic pipe and steel-plastic composite pressure pipe material, steel modeling are multiple Resultant pressure tubing has inner plastic layer, outer plastic layer and middle steel layer, and plastic pipe has at least one internal ring portion, an outer shroud Portion and an annular socket joint chamber, the internal diameter of internal ring portion from inside to port at become larger, steel-plastic composite pressure pipe material insertion institute Annular socket joint intracavitary is stated, its improvement is:Also include the ring bush being placed on internal ring portion its inwall, this ring bush it is outer End is bendingly fixed on the outer end of internal ring portion outwardly, and resilient sleeve, and resilient sleeve are provided between internal ring portion and ring bush Alignd with the outer end of internal ring portion its outer end.
As to such scheme it is further supplement and it is perfect, the utility model also includes following technical characteristic:
The inner of above-mentioned ring bush is together with internal ring portion system.
Its inwall of above-mentioned internal ring portion forms circular conical surface, and the outer surface of resilient sleeve is adapted with the inwall of internal ring portion, resilient sleeve Inner surface be adapted with the outer surface of ring bush.
Above-mentioned outer portion is provided with the observation portion for being available for steel-plastic composite pressure pipe material welding, the observation near its root Portion includes the muscle of blind hole, the tongue positioned at blind hole center and connection blind hole inwall and the tongue, the observation portion adjacent rings socket joint chamber Bottom.
When steel-plastic composite pressure pipe material is planted to annular socket joint bottom of chamber portion, its tongue of observation portion exposes outer shroud in above-mentioned observation portion The surface in portion;And after steel-plastic composite pressure pipe material and plastic pipe welding, this is fused to its tongue of observation portion on outer plastic layer It is recessed within outer portion.
Observation portion can be used for examining whether steel-plastic composite pressure pipe material is planted in place, if its tongue of observation portion exposes outer portion Surface, show that this steel-plastic composite pressure pipe material has planted the bottom of annular socket joint chamber;If its tongue of observation portion does not expose outer The surface of ring portion, show that this steel-plastic composite pressure pipe material does not plant the bottom of annular socket joint chamber also.
Whether observation portion can also advantageously examine plastic pipe welding, if its tongue of observation portion is recessed in external annulus Portion, show this plastic pipe and the welding of steel-plastic composite pressure pipe material;If its tongue of observation portion only exposes the surface of outer portion, Show that the plastic pipe without welding, has only planted steel-plastic composite pressure pipe material.
The utility model has the following advantages that and beneficial effect:
During being arranged resilient sleeve on toward ring bush, along with resilient sleeve be restrained to the internal ring portion of plastic pipe with Between ring bush.
When having planted steel-plastic composite pressure pipe material together and plastic pipe is melted by electromagnetic induction heating, resilient sleeve Lasting extruding makes the internal ring portion deformation by thermal softening, and resilient sleeve promotes internal ring portion fully to fill up because of steel-plastic composite pressure pipe material visitor See to exist and lose the sunken and caused welding gap of discount vibram outlet, the welded side seam between inner plastic layer and internal ring portion is thoroughly eliminated after cooling Gap, so as to improve welding quality, avoid hidden leakage defect.
【Brief description of the drawings】
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation for the ring bush and resilient sleeve for removing Fig. 1 right-hand sides;
Fig. 3 is ring bush structural representation of the present utility model;
Fig. 4 is Fig. 1 A to partial view (observation portion is amplified).
【Embodiment】
It refer to shown in Fig. 1,2,3,4, be preferred embodiment of the present utility model.
A kind of seamless welding structure of steel-plastic composite pressure pipe, including plastic pipe 2 and steel-plastic composite pressure pipe material 1, steel modeling Composite pressure tubing 1 has inner plastic layer 11, outer plastic layer 12 and middle steel layer 10, and plastic pipe 2 has at least one inner ring 21, one, portion outer portion 22 and an annular socket joint chamber 20, the internal diameter 21d of internal ring portion from inside to port at become larger, steel Plastic composite pressure pipe material 1 is inserted in the annular socket joint chamber 20, and its improvement is:Also include being placed on internal ring portion 21 its inwall Ring bush 3, the outer end 31 of this ring bush 3 is bendingly fixed on the outer end of internal ring portion 21 outwardly, internal ring portion 21 with Resilient sleeve 4 is installed between ring bush 3, to cause the resilient sleeve 4 restrained wherein, and its outer end of resilient sleeve 4 and internal ring portion 21 outer end is concordant.
When steel-plastic composite pressure pipe material 1 melts with the electromagnetism of plastic pipe 2, the internal ring portion 21 of soft state bears to carry out own elasticity The squeezing action of set 4 is to promote the 11 seamless welding of inner plastic layer of the internal ring portion 21 of plastic pipe 2 and steel-plastic composite pressure pipe material 1 Sealing.
The outer end 31 of ring bush 3 is contacted at after bending on the end face of internal ring portion 21.
In the present embodiment, resilient sleeve 4 uses elastomeric material;Its material of ring bush 3 is made of stainless steel;Modeling Expects pipe part 2 is straight-through pipe fitting, and its both ends is welding end, and symmetrical configuration, including is divided into the outer of straight-through pipe fitting arranged on left and right sides Ring portion, internal ring portion and annular socket joint chamber.Certainly according to being actually needed, it is welding end that wherein one end of plastic pipe 2, which is not,.And mould The form of expects pipe part 2 can be changeable, in addition to straight-through pipe fitting or elbow, can also be threeway, four-way, then connection end accordingly increases therewith Add.
The annular socket joint chamber 20 of plastic pipe 2 implements electromagnetic inductive welding after being planted for steel-plastic composite pressure pipe material 1.
Refer to Fig. 2, the external diameter 21D of internal ring portion from inside to port at taper into, and the internal diameter 22d of outer portion is from interior Portion is to becoming larger at port.
As preferential embodiment, the inner 32 of ring bush 3 is so achieved that ring together with being made with internal ring portion 21 Shape bushing 3 is integrally configured so that both are connected as a single entity with internal ring portion 21, when it is implemented, incorporated by reference to Fig. 3, in original annular On the basis of the bending form of outer end 31 of bushing 3, by the inner 32 of ring bush 3 also outside bending, the inner 32 after bending It is moulded at the inner of internal ring portion 21.Further, annular shallow trench S is opened up at the inner place of internal ring portion 21, and by ring bush 3 The inner 32 be placed in this annular shallow trench S, then row injection again, the company that the inner 32 can improve ring bush 3 after injection Connect reliability.
The structure of ring bush 3 positioned at 2 left and right both sides of plastic pipe is identical, generally applicable;Positioned at plastic pipe 2 left and right two The structure of resilient sleeve 4 on side is identical, generally applicable.
Its inwall of internal ring portion 21 forms circular conical surface (internal ring portion inwall is in bell mouth shape), the outer surface of resilient sleeve 4 and inner ring The inwall in portion 21 is adapted, and the inner surface of resilient sleeve 4 is adapted with the outer surface of ring bush 3.
The wall thickness of resilient sleeve 4 everywhere is unequal, and the wall thickness of its outer end of resilient sleeve 4 is maximum, and the wall thickness of resilient sleeve 4 is gradual inside Reduce.Because the wall thickness of its outer end of resilient sleeve 4 is big, the port of plastic pipe 2 and its vicinity (seepage starting source) can be improved Sealing.
Fig. 1,4 are referred to, outer portion 22 is provided with the observation for being available for the welding of steel-plastic composite pressure pipe material 1 near its root Portion 5, the observation portion 5 include the muscle of blind hole 50, the tongue 51 positioned at the center of blind hole 50 and the connection inwall of blind hole 50 and the tongue 51 52, the bottom of the adjacent rings socket joint chamber 20 of observation portion 5.
The present embodiment, straight-through plastic pipe is left and right is arranged with two observation portions.
When steel-plastic composite pressure pipe material 1 is planted to annular 20 bottom of socket joint chamber, its tongue 51 of observation portion 5 exposes in observation portion 5 The surface of outer portion 22;And after steel-plastic composite pressure pipe material 1 and the welding of plastic pipe 2, this is fused on outer plastic layer 11 Its tongue 51 of observation portion 5 is recessed within outer portion 22.
During welding, the annular that steel-plastic composite pressure pipe material 1 is inserted to plastic pipe 2 is accepted in chamber 20, and is served as a contrast in annular Resilient sleeve 4 is installed between set 3 and internal ring portion 21, and then electromagnetic induction heater (prior art, omitting diagram) is placed in outer shroud The periphery in portion 22, sensing heating is implemented to melt inner plastic layer 11, outer plastic layer 12 to the middle steel layer 10 of plugging position, until Internal ring portion 21, the melted by heating of outer portion 22, realize the welding of steel-plastic composite pressure pipe material 1 and plastic pipe 2, now after cooling Eliminate the welding gap between the internal ring portion 21 of plastic pipe 2 and the inner plastic layer 11 of steel-plastic composite pressure pipe material 1.

Claims (5)

1. a kind of seamless welding structure of steel-plastic composite pressure pipe, including plastic pipe and steel-plastic composite pressure pipe material, steel plastic compount Pressure tubing has inner plastic layer, outer plastic layer and middle steel layer, and plastic pipe has at least one internal ring portion, an outer portion With an annular socket joint chamber, the internal diameter of internal ring portion from inside to port at become larger, described in the insertion of steel-plastic composite pressure pipe material Annular socket joint intracavitary, it is characterised in that:Also include the ring bush being placed on internal ring portion its inwall, the outer end court of this ring bush Bendingly it is fixed on outside on the outer end of internal ring portion, resilient sleeve is installed between internal ring portion and ring bush, and resilient sleeve is outside it Alignd with the outer end of internal ring portion at end.
2. the seamless welding structure of steel-plastic composite pressure pipe according to claim 1, it is characterized in that the inner of ring bush with Internal ring portion system is together.
3. the seamless welding structure of steel-plastic composite pressure pipe according to claim 1, it is characterized in that its inwall of the internal ring portion Circular conical surface is formed, the outer surface of resilient sleeve is adapted with the inwall of internal ring portion, the inner surface of resilient sleeve and the appearance of ring bush Face is adapted.
4. the seamless welding structure of steel-plastic composite pressure pipe according to claim 1, it is characterised in that:The outer portion is at it Root is nearby provided with the observation portion for being available for steel-plastic composite pressure pipe material welding, and the observation portion includes blind hole, in blind hole The tongue of centre and the muscle of connection blind hole inwall and the tongue, the bottom of the observation portion adjacent rings socket joint chamber.
5. the seamless welding structure of steel-plastic composite pressure pipe according to claim 4, it is characterised in that:The observation portion is in steel Plastic composite pressure pipe material plants to its tongue of observation portion during annular socket joint bottom of chamber portion the surface for exposing outer portion;And in steel plastic compount pressure After solenoid material and plastic pipe welding, its tongue of observation portion being fused on outer plastic layer is recessed within outer portion.
CN201720817240.XU 2017-06-26 2017-06-26 A kind of seamless welding structure of steel-plastic composite pressure pipe Expired - Fee Related CN207122674U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720817240.XU CN207122674U (en) 2017-06-26 2017-06-26 A kind of seamless welding structure of steel-plastic composite pressure pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720817240.XU CN207122674U (en) 2017-06-26 2017-06-26 A kind of seamless welding structure of steel-plastic composite pressure pipe

Publications (1)

Publication Number Publication Date
CN207122674U true CN207122674U (en) 2018-03-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108890168A (en) * 2018-08-16 2018-11-27 中铁十六局集团第三工程有限公司 A kind of tunneltron canopy socket welding type attachment device and its method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108890168A (en) * 2018-08-16 2018-11-27 中铁十六局集团第三工程有限公司 A kind of tunneltron canopy socket welding type attachment device and its method
CN108890168B (en) * 2018-08-16 2024-02-13 中铁十六局集团第三工程有限公司 Tunnel pipe shed plug-in welding type connecting device and method thereof

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20190812

Address after: 312400 Ma Che Bridge Head, Huangze Town, Shengzhou City, Shaoxing City, Zhejiang Province

Patentee after: Shengzhou Kangyu plastic composite pipe factory

Address before: 312400 Zhejiang city of Shengzhou Province Huang Ze Zhen Shun Fu Village No. 168

Co-patentee before: Tu Benkuan

Patentee before: Wang Zeyu

Co-patentee before: Tu Hongtao

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: 20180320

Termination date: 20200626