CN101105250A - Threaded pipe joint - Google Patents

Threaded pipe joint Download PDF

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Publication number
CN101105250A
CN101105250A CNA2006100289784A CN200610028978A CN101105250A CN 101105250 A CN101105250 A CN 101105250A CN A2006100289784 A CNA2006100289784 A CN A2006100289784A CN 200610028978 A CN200610028978 A CN 200610028978A CN 101105250 A CN101105250 A CN 101105250A
Authority
CN
China
Prior art keywords
joint
bulge loop
pipeline
wedge
pipe
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.)
Pending
Application number
CNA2006100289784A
Other languages
Chinese (zh)
Inventor
王国林
王淑诗
王伟凯
Original Assignee
王国林
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 王国林 filed Critical 王国林
Priority to CNA2006100289784A priority Critical patent/CN101105250A/en
Publication of CN101105250A publication Critical patent/CN101105250A/en
Pending legal-status Critical Current

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Abstract

The invention provides a screwed pipe joint, which comprises a joint, a pipeline, a connecting nut, and a sealing ring, wherein the connecting nut directly presses the end surface of the outer side of a pipe bulge loop of the pipeline, the inner pressing end surface is identical with the curved surface matting with the end surface of the outer side of the pipe bulge loop, the sealing ring is provided at the end surface of the inner side of the pipe bulge loop, the outer end surface of the sealing ring is matting with the end surface of the inner side of the pipe bulge loop, the inner cylindrical surface of the sealing ring is matting with the outer cylindrical surface of the pipeline, and the inner conical surface of the sealing ring is matting with the outer conical surface of the joint. The inventive screwed pipe joint has the advantages of compact structure and reliable seal.

Description

Threaded pipe joint
Technical field
The present invention relates to a kind of pipe coupling, the threaded pipe joint that especially a kind of pipeline that can be used for industries such as various water pipes and medicine, chemical industry, food is connected with pipeline.
Background technique
Existing threaded pipe joint such as China Patent No. are called a kind of patent of invention of pipe joint for the ZL01105997.4 name, form by joint, gasket seal, lock ring cover, attaching nut, the attaching nut is by compressing lock ring cover and connecting tube and then compressing gasket seal, this pipe coupling is owing to adopt the lock ring cover to make structure too complicated, and wherein the sealing effect of gasket seal is not ideal enough.
Summary of the invention
The purpose of this invention is to provide a kind of compact structure and reliable sealing threaded pipe joint.
To achieve these goals, technological scheme of the present invention is such: a kind of threaded pipe joint, comprise joint, pipeline, the attaching nut, seal ring, the attaching nut is directly pressing the outside end face of the pipe bulge loop of pipeline, it is consistent with the outside end face curved surface of the pipe bulge loop that matches to compress end face in the attaching nut, the inner side end of the pipe bulge loop of pipeline is provided with seal ring, match with the inner side end of pipe bulge loop in the exterior edge face of seal ring, the inner cylindrical surface of seal ring matches with the external cylindrical surface of pipeline, the inner conical surface of seal ring matches with the male cone (strobilus masculinus) of joint, wherein, the inner conical surface of seal ring, inner cylindrical surface, the exterior edge face constitutes a wedge-type seal circle together, inner conical surface, inner cylindrical surface, the exterior edge face is respectively the inclined-plane of wedge-type seal circle, face and be subjected to thrust face directly, correspondingly, the male cone (strobilus masculinus) of joint, the external cylindrical surface of pipeline, the inner side end of pipe bulge loop constitutes a wedge-type seal seat, the male cone (strobilus masculinus) of joint together, the external cylindrical surface of pipeline, the inner side end of pipe bulge loop is respectively the inclined-plane of wedge-type seal seat, face directly and thrust face.
Since several of the seal ring in the above-mentioned technical solution with pipe coupling in other correlation surface close fit, and specific wedge-type seal circle can reach special reliable sealing effect with corresponding wedge-type seal seat, and have only joint, pipeline, attaching nut, the several parts of seal ring in the technological scheme, simple in structure, easy to connect, can use widely and being connected of various pipelines and pipeline.
Description of drawings
Fig. 1 is the structural drawing of threaded pipe joint provided by the invention.
Fig. 2 is the structural drawing of seal ring in the threaded pipe joint provided by the invention.
Embodiment
Be described in further detail below in conjunction with accompanying drawing and embodiments of the present invention:
Wherein: 1, joint; 2, pipeline; 3, attaching nut; 4, seal ring; 5, pipe bulge loop; 6, nut tail end protecting jacket; 4-1, exterior edge face; 4-2, inner cylindrical surface; 4-3, inner conical surface; 4-4, transition external cylindrical surface
As shown in Figure 1, threaded pipe joint of the present invention comprises joint 1, pipeline 2, the attaching nut 3, seal ring 4, attaching nut 3 is directly pressing the outside end face of the pipe bulge loop 5 of pipeline 2, it is consistent with the outside end face curved surface of the pipe bulge loop 5 that matches to compress end face in the attaching nut 3, the inner side end of the pipe bulge loop 5 of pipeline 2 is provided with seal ring 4, the exterior edge face 4-1 of seal ring 4 matches with the inner side end of pipe bulge loop 5, the inner cylindrical surface 4-2 of seal ring 4 matches with the external cylindrical surface of pipeline 2, the inner conical surface 4-3 of seal ring 4 matches with the male cone (strobilus masculinus) of joint 1, wherein, the inner conical surface 4-3 of seal ring 4, inner cylindrical surface 4-2, exterior edge face 4-1 constitutes a wedge-type seal circle together, inner conical surface 4-3, inner cylindrical surface 4-2, exterior edge face 4-1 is respectively the inclined-plane of wedge-type seal circle, face and be subjected to thrust face directly, correspondingly, the male cone (strobilus masculinus) of joint 1, the external cylindrical surface of pipeline 2, the inner side end of pipe bulge loop 5 constitutes a wedge-type seal seat, the male cone (strobilus masculinus) of joint 1 together, the external cylindrical surface of pipeline 2, the inner side end of pipe bulge loop 5 is respectively the inclined-plane of wedge-type seal seat, face directly and thrust face.The obvious structure of this pipe coupling is very compact, and the wedge-type seal circle be subjected to thrust face under the effect of the thrust face of wedge-type seal seat, thereby the inclined-plane of wedge-type seal circle and face directly and can and face crowded more being adjacent to more directly with the inclined-plane of wedge-type seal seat and reach a kind of desirable sealing effect, wherein also have characteristics to be no matter inclined-plane and being adjacent to of inclined-plane seal or face directly and face directly to be adjacent to sealing or thrust face and to be subjected to the sealing that is adjacent to of thrust face all be uniform face seal rather than linear sealing, thereby sealing effect is more reliable.
When the inner side end of the exterior edge face of seal ring 4 4-1 and pipe bulge loop 5 all be positioned at one with the perpendicular plane of conduit axis on the time, thrust can more directly produce sealing effect.
The present invention is provided with nut tail end protecting jacket 6 in attaching nut 3 the outside, can make the pipe that is connected that better resistance to flexure is arranged near joint.
As shown in Figure 1 and Figure 2, between the inner conical surface 4-3 of wedge-type seal circle and exterior edge face 4-1, be provided with transition external cylindrical surface 4-4, be provided with the transition inner cylindrical surface between joint 1 male cone (strobilus masculinus) of wedge-type seal seat and pipe bulge loop 5 inner side ends, owing to wherein be provided with the transition inner cylindrical surface on transition external cylindrical surface 4-4 and the corresponding joint 1, thereby can make pipe coupling possess long sealing to compress distance, make that seal ring 4 might be pressed tightlyer, sealing effect is better.
In the present invention, definite benchmark of interior exterior orientation is: axially inwardly to serve as towards joint middle part direction, axially outwards be away from joint middle part direction at first; Secondly with towards pipeline or joint axial direction for radially inside, be radially outward away from pipeline or joint axial direction.

Claims (5)

1. threaded pipe joint, comprise joint (1), pipeline (2), attaching nut (3), seal ring (4), it is characterized in that: attaching nut (3) is directly pressing the outside end face of the pipe bulge loop (5) of pipeline (2), it is consistent with the outside end face curved surface of the pipe bulge loop (5) that matches to compress end face in the attaching nut (3), the inner side end of the pipe bulge loop (5) of pipeline (2) is provided with seal ring (4), match with the inner side end of pipe bulge loop (5) in the exterior edge face (4-1) of seal ring (4), the inner cylindrical surface (4-2) of seal ring (4) matches with the external cylindrical surface of pipeline (2), the inner conical surface (4-3) of seal ring (4) matches with the male cone (strobilus masculinus) of joint (1), wherein, the inner conical surface (4-3) of seal ring (4), inner cylindrical surface (4-2), exterior edge face (4-1) constitutes a wedge-type seal circle together, inner conical surface (4-3), inner cylindrical surface (4-2), exterior edge face (4-1) is respectively the inclined-plane of wedge-type seal circle, face and be subjected to thrust face directly, correspondingly, the male cone (strobilus masculinus) of joint (1), the external cylindrical surface of pipeline (2), the inner side end of pipe bulge loop (5) constitutes a wedge-type seal seat together, the male cone (strobilus masculinus) of joint (1), the external cylindrical surface of pipeline (2), the inner side end of pipe bulge loop (5) is respectively the inclined-plane of wedge-type seal seat, face directly and thrust face.
2. threaded pipe joint according to claim 1 is characterized in that: the exterior edge face (4-1) of seal ring (4) and the inner side end of pipe bulge loop (5) all be positioned at one with the perpendicular plane of conduit axis on.
3. threaded pipe joint according to claim 1 and 2 is characterized in that: attaching nut's (3) the outside is provided with nut tail end protecting jacket (6).
4. threaded pipe joint according to claim 1 and 2, it is characterized in that: be provided with transition external cylindrical surface (4-4) between the inner conical surface of wedge-type seal circle (4-3) and exterior edge face (4-1), be provided with the transition inner cylindrical surface between the joint of wedge-type seal seat (1) male cone (strobilus masculinus) and pipe bulge loop (5) inner side end.
5. threaded pipe joint according to claim 3, it is characterized in that: be provided with transition external cylindrical surface (4-4) between the inner conical surface of wedge-type seal circle (4-3) and exterior edge face (4-1), be provided with the transition inner cylindrical surface between the joint of wedge-type seal seat (1) male cone (strobilus masculinus) and pipe bulge loop (5) inner side end.
CNA2006100289784A 2006-07-12 2006-07-12 Threaded pipe joint Pending CN101105250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2006100289784A CN101105250A (en) 2006-07-12 2006-07-12 Threaded pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2006100289784A CN101105250A (en) 2006-07-12 2006-07-12 Threaded pipe joint

Publications (1)

Publication Number Publication Date
CN101105250A true CN101105250A (en) 2008-01-16

Family

ID=38999273

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2006100289784A Pending CN101105250A (en) 2006-07-12 2006-07-12 Threaded pipe joint

Country Status (1)

Country Link
CN (1) CN101105250A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102313086A (en) * 2011-08-23 2012-01-11 重庆顾地塑胶电器有限公司 Inner expansion connecting structure for screw sleeve type steel and plastic composite pipe
CN102852614A (en) * 2012-09-05 2013-01-02 周峰 Connecting structure of bend and exhaust pipe in exhaust pipe water entering preventer
CN102852616A (en) * 2012-09-05 2013-01-02 周峰 Sealing structure for elbow pipe and exhaust pipe of exhaust pipe waterproof device
CN103016863A (en) * 2012-12-19 2013-04-03 中联重科股份有限公司 Pipeline connection structure and hydraulic pipeline
WO2014176766A1 (en) * 2013-05-01 2014-11-06 南通利杰船舶贸易有限公司 Marine tapered threaded joint
CN104633324A (en) * 2014-12-11 2015-05-20 中国北方发动机研究所(天津) Pipe spherical joint reinforcement sealing structure
CN112013174A (en) * 2020-08-25 2020-12-01 珠海市广华燃气消防工程有限公司 Natural gas pipeline plugging device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102313086A (en) * 2011-08-23 2012-01-11 重庆顾地塑胶电器有限公司 Inner expansion connecting structure for screw sleeve type steel and plastic composite pipe
CN102313086B (en) * 2011-08-23 2013-02-06 重庆顾地塑胶电器有限公司 Inner expansion connecting structure for screw sleeve type steel and plastic composite pipe
CN102852614A (en) * 2012-09-05 2013-01-02 周峰 Connecting structure of bend and exhaust pipe in exhaust pipe water entering preventer
CN102852616A (en) * 2012-09-05 2013-01-02 周峰 Sealing structure for elbow pipe and exhaust pipe of exhaust pipe waterproof device
CN103016863A (en) * 2012-12-19 2013-04-03 中联重科股份有限公司 Pipeline connection structure and hydraulic pipeline
CN103016863B (en) * 2012-12-19 2015-01-07 中联重科股份有限公司 Pipeline connection structure and hydraulic pipeline
WO2014176766A1 (en) * 2013-05-01 2014-11-06 南通利杰船舶贸易有限公司 Marine tapered threaded joint
CN104633324A (en) * 2014-12-11 2015-05-20 中国北方发动机研究所(天津) Pipe spherical joint reinforcement sealing structure
CN112013174A (en) * 2020-08-25 2020-12-01 珠海市广华燃气消防工程有限公司 Natural gas pipeline plugging device
CN112013174B (en) * 2020-08-25 2022-02-11 珠海市广华燃气消防工程有限公司 Natural gas pipeline plugging device

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PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
WD01 Invention patent application deemed withdrawn after publication

Open date: 20080116

C02 Deemed withdrawal of patent application after publication (patent law 2001)