CN109282093A - Squash type pipe connection system - Google Patents

Squash type pipe connection system Download PDF

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Publication number
CN109282093A
CN109282093A CN201810940405.1A CN201810940405A CN109282093A CN 109282093 A CN109282093 A CN 109282093A CN 201810940405 A CN201810940405 A CN 201810940405A CN 109282093 A CN109282093 A CN 109282093A
Authority
CN
China
Prior art keywords
branch pipe
fitting
connection
seal
squash type
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
CN201810940405.1A
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Chinese (zh)
Inventor
李焕华
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.)
Futong Fluid Technology (shanghai) Co Ltd
Original Assignee
Futong Fluid Technology (shanghai) Co Ltd
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 Futong Fluid Technology (shanghai) Co Ltd filed Critical Futong Fluid Technology (shanghai) Co Ltd
Priority to CN201810940405.1A priority Critical patent/CN109282093A/en
Publication of CN109282093A publication Critical patent/CN109282093A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00Joints with sleeve or socket
    • F16L21/08Joints with sleeve or socket with additional locking means

Abstract

The invention discloses a kind of squash type pipe connection systems, including at least two branch pipe, it is attached between adjacent branch pipe by connection structure two-by-two, the connection structure includes fitting body, sealing ring, seal convexity and locking nut, circumferential direction of the seal convexity close to the end of the branch pipe along the branch pipe is formed by squeezing, three fitting body, sealing ring, locking nut member in tight, which are combined together to assemble, forms safety, the pipe-line system of zero leakage, it successfully solves the problems, such as sealing problem and speed of application in pipeline connection.Due to the form using sealing ring soft seal, when connecting line, this seal form make pipeline be stretched stress it is excessive when can compensate in time, so not will lead to pipe leakage.

Description

Squash type pipe connection system
Technical field
The present invention relates to pipe connection system technical fields, and in particular to a kind of outer diameter is at 6 millimeters -42 millimeters, work pressure The squash type pipe connection system of piping connection of the power less than 800 kilograms and sealing.
Background technique
Traditionally for outer diameter at 6 millimeters -42 millimeters, operating pressure is less than the piping connection and sealing of 800kg, usually adopts System is connected with cutting ferrule 2 '.Cutting ferrule 2 ' connects the structure of system as shown in Figure 1, including fitting body 1 ', cutting ferrule 2 ' and locking nut 3 ', the both ends of the fitting body 1 ' offer conical seal (contact) face in the inner sidewall of fitting body 1 ' from outside to inside, and the two of fitting body 1 ' It holds and is equipped with external screw thread in the lateral wall of fitting body 1 ', the inner sidewall of the locking nut 3 ' is offered to match with the external screw thread Internal screw thread, the cutting ferrule 2 ' is set between the fitting body 1 ' and the locking nut 3 ', and one end abuts the connector Body 1 ', the other end abut the locking nut 3 ', and the cutting ferrule 2 ' is equipped with and the taper against one end of the fitting body 1 ' The inner edge that sealing surface matches.When carrying out the connection and sealing of pipeline, first respectively by 2 locking nuts 3 ', 2 cutting ferrules 2 ' It is sheathed on 2 pipelines, the external screw thread at 1 ' both ends of fitting body is docked with the internal screw thread of locking nut 3 ' then and is tightened, so that lock Tight nut 3 ' applies an axial compressive force to the cutting ferrule 2 ' against it, so that the inner edge insertion pipeline and taper of 2 ' front end of cutting ferrule are close Between cover, so that locking nut 3 ' and cutting ferrule 2 ' are fixed in the outside of pipeline.Locking nut 3 ' generates cutting ferrule 2 ' axial Thrust, so that the inner edge of cutting ferrule 2 ' contacts hard sealing with the formation of the conical seal (contact) face of fitting body 1 '.
The above sealing structure has the following deficiencies:
(1) concentricity of pipeline and fitting body is relatively inaccessible to when the prepackage of cutting ferrule connection system, slightly deflection will result in close Envelope failure, causes pipeline to be revealed.
(2) pre-install when prepackage power be difficult to control, prepackage power it is too large or too small all can cutting ferrule lose sealing function.
(3) when connecting line, if not staying enough distortion allowances, make pipeline be stretched stress it is excessive when can make At the poorly sealed of cutting ferrule, pipeline is caused to be revealed.
(4) when connecting line, if will cause the poorly sealed of cutting ferrule when excessive by lateral force, pipeline is caused to be revealed.
(5) cutting ferrule connection system cannot be dismantled repeatedly, otherwise can also sealing performance be made to fail, pipeline is caused to be revealed.
(6) cutting ferrule, which links subordination, leads to pipeline if pipeline vibration is bigger to will lead to seal failure in metal hard-sealing Leakage.
(7) since the material of state's internal cutting ferrule and hot nursing technique are unqualified, the cutting ferrule of import is generallyd use, so that pipeline connects The cost connect is high.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of squash type pipe connection systems, it can solve existing skill In art cutting ferrule connection system be not connected firmly lean on, the problem of service life is short, pipeline is easily revealed.
To solve the above-mentioned problems, the invention adopts the following technical scheme:
The present invention provides a kind of squash type pipe connection system, including at least two branch pipe, leads between adjacent branch pipe two-by-two It crosses connection structure to be attached, the connection structure includes fitting body, sealing ring, seal convexity and locking nut, the sealing Circumferential direction of the protrusion close to the end of the branch pipe along the branch pipe is formed by squeezing, and the both ends of the fitting body are sheathed on respectively The both ends of the surface of the outside of adjacent branch pipe two-by-two, the fitting body offer taper along the inner sidewall of the fitting body from outside to inside Sealing surface, the both ends of the fitting body are fixedly connected with the inner sidewall of the locking nut, and the both ends difference of the seal convexity is tight By the fitting body and the locking nut, the sealing ring is set to the conical seal (contact) face, the branch pipe and the connector In the seal groove formed between body three.
The angle between the conical surface and horizontal line of the conical seal (contact) face is 24 degree as a preferred technical solution,.
The shape of the sealing ring and the shape of the seal groove match as a preferred technical solution, the sealing The volume of circle in its natural state is greater than the volume of the seal groove.
The sealing ring is made using fluorubber material as a preferred technical solution,.
The outer wall of the corresponding branch pipe of the seal groove offers peace along the circumferential direction of the branch pipe as a preferred technical solution, Fill notch.
The both ends of the fitting body are equipped with external screw thread, the lock in the lateral wall of fitting body as a preferred technical solution, The inner sidewall of tight nut offers the internal screw thread to match with the external screw thread.
The inner sidewall of the branch pipe is coated with etch resistant material layer as a preferred technical solution,.
Squash type pipe connection system of the invention without prepackage, by then pass through single lead screw ex truding briquetting machine by pipeline one at Type, using the form of sealing ring soft seal, solve existing cutting ferrule connection system due to connection is eccentric, vibration, drawing force are excessive, The problems such as seal failure caused by the reasons such as lateral force is excessive, multiple disassembly, pipeline leakage.
It is clear that squash type pipe connection system with three fitting body, sealing ring, locking nut member in tight It can assemble together and form safety, the pipe-line system of zero leakage, it successfully solves sealing problem and construction in pipeline connection Speed issue.Compared with traditional cutting ferrule connects system, connection system of the invention is had the advantage that
(1) squash type pipe connection system uses the form of sealing ring soft seal, though pipeline have it is a degree of coaxial Deflection will not cause seal failure, pipeline is caused to be revealed.
(2) squash type pipe connection system is that seal convexity is directly squeezed out on pipeline, so there is no polite formulas to pre-install power Seal failure problem caused by too large or too small.
(3) due to the form using sealing ring soft seal, when connecting line, this seal form is drawing pipeline Stretch stress it is excessive when can compensate in time, so not will lead to pipe leakage.
(4) due to the form using sealing ring soft seal, when connecting line, this seal form can make pipeline by Lateral force can recompense in time when excessive, not will cause pipeline leakage.
(5) squash type pipe connection system is due to using pipeline integrated molding and sealing ring soft seal technology, this structure Allow repeatedly disassembly, not will lead to seal failure.
(6) squash type pipe connection system is due to using pipeline integrated molding and sealing ring soft seal technology, so that pipeline Connection eliminates expensive cutting ferrule expense, reduces the link cost of pipeline, improves speed of application.
Detailed description of the invention
Invention is further described in detail with specific embodiment with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram that background technique cutting ferrule connects system;
The structural schematic diagram of Fig. 2 squash type pipe connection system of the present invention.
Wherein, appended drawing reference is described as follows:
Background technique: fitting body 1 ', cutting ferrule 2 ' and locking nut 3 '.
Specific embodiment: the first branch pipe 1, the second branch pipe 2, fitting body 3, seal convexity 4, locking nut 5, sealing ring 6.
Specific embodiment
As shown in Fig. 2, a kind of squash type pipe connection system, including the first branch pipe 1 and the second branch pipe 2, the first branch pipe 1 with The inner wall of second branch pipe 2 is coated with etch resistant material layer.Connected between first branch pipe 1 and the second branch pipe 2 by bindiny mechanism It connects.
Bindiny mechanism includes fitting body 3, sealing ring 6, seal convexity 4 and locking nut 5, and seal convexity 4 is provided with 2, It is respectively arranged at the position that close end is leaned on the first branch pipe 1 and the second branch pipe 2, seal convexity 4 is along the first branch pipe 1, the second branch pipe 2 Circumferential direction squeeze to be formed by extruder.It is close that the both ends of the surface of fitting body 3 along the inner sidewall of fitting body 3 offer taper from outside to inside Cover, the angle between the conical surface and horizontal line of conical seal (contact) face are 24 degree.The both ends of fitting body 3 are sheathed on the first branch pipe respectively 1, the both ends of the outside of the second branch pipe 2, fitting body 3 are equipped with external screw thread, the inner sidewall of locking nut 5 in the lateral wall of fitting body 3 The internal screw thread to match with external screw thread is offered, the both ends of fitting body 3 are connect with locking nut 5 by internal screw thread, external screw thread.It is close Respectively against fitting body 3 and locking nut 5, sealing ring 6 is set to conical seal (contact) face, branch pipe and fitting body 3 at the both ends of envelope protrusion 4 In the seal groove formed between three.The outer wall of the corresponding branch pipe of seal groove offers installation gap 7 along the circumferential direction of branch pipe, sealing The shape of circle 6 and the shape of seal groove match, and the volume of sealing ring 6 in its natural state is greater than the volume of seal groove, sealing Circle 6 is made using fluorubber material.
Working principle: when needing to carry out piping connection and sealing, locking nut 5 is set in the first branch pipe 1, the first On the outer wall of two branch pipes 2, seal convexity 4 is formed on the first branch pipe 1 and the second branch pipe 2 by single lead screw ex truding briquetting machine, it later will be close Seal 6 is placed in the front end of seal convexity 4, and the external screw thread at 3 both ends of fitting body is docked with the internal screw thread of locking nut 5 with hand and is twisted Tightly, the preliminary connection of pipeline is formed, locking nut 5 is further then tightened using spanner, so that the seal groove where sealing ring 6 Space be gradually reduced, leak point unique between pipeline and fitting body 3 is blocked by compressive deformation, is reached pipeline by sealing ring 6 The purpose of connection and sealing.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not to limit The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple It deduces, deform or replaces.

Claims (7)

1. a kind of squash type pipe connection system, which is characterized in that including at least two branch pipe, lead between adjacent branch pipe two-by-two It crosses connection structure to be attached, the connection structure includes fitting body, sealing ring, seal convexity and locking nut, the sealing Circumferential direction of the protrusion close to the end of the branch pipe along the branch pipe is formed by squeezing, and the both ends of the fitting body are sheathed on respectively The both ends of the surface of the outside of adjacent branch pipe two-by-two, the fitting body offer taper along the inner sidewall of the fitting body from outside to inside Sealing surface, the both ends of the fitting body are fixedly connected with the inner sidewall of the locking nut, and the both ends difference of the seal convexity is tight By the fitting body and the locking nut, the sealing ring is set to the conical seal (contact) face, the branch pipe and the connector In the seal groove formed between body three.
2. a kind of squash type pipe connection system as described in claim 1, it is characterised in that: the conical surface of the conical seal (contact) face Angle between horizontal line is 24 degree.
3. a kind of squash type pipe connection system as described in claim 1, it is characterised in that: the shape of the sealing ring and institute The shape for stating seal groove matches, and the volume of the sealing ring in its natural state is greater than the volume of the seal groove.
4. a kind of squash type pipe connection system as described in claim 1, it is characterised in that: the sealing ring uses fluorubber Material is made.
5. a kind of squash type pipe connection system as described in claim 1, it is characterised in that: the corresponding branch pipe of the seal groove Outer wall offer installation gap along the circumferential direction of the branch pipe.
6. a kind of squash type pipe connection system as described in claim 1, it is characterised in that: the both ends of the fitting body are in connecing The lateral wall of head body is equipped with external screw thread, and the inner sidewall of the locking nut offers the internal screw thread to match with the external screw thread.
7. a kind of squash type pipe connection system as described in claim 1, it is characterised in that: the inner sidewall of the branch pipe coats There is etch resistant material layer.
CN201810940405.1A 2018-08-17 2018-08-17 Squash type pipe connection system Pending CN109282093A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810940405.1A CN109282093A (en) 2018-08-17 2018-08-17 Squash type pipe connection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810940405.1A CN109282093A (en) 2018-08-17 2018-08-17 Squash type pipe connection system

Publications (1)

Publication Number Publication Date
CN109282093A true CN109282093A (en) 2019-01-29

Family

ID=65183209

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810940405.1A Pending CN109282093A (en) 2018-08-17 2018-08-17 Squash type pipe connection system

Country Status (1)

Country Link
CN (1) CN109282093A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016863A (en) * 2012-12-19 2013-04-03 中联重科股份有限公司 Pipeline connection structure and hydraulic pipeline
CN203011654U (en) * 2012-11-29 2013-06-19 重庆气体压缩机厂有限责任公司 Clamp used for pressure test of heat exchange tube
CN203115338U (en) * 2013-03-19 2013-08-07 福派管道系统(上海)有限公司 Compression type single ferrule fitting
CN203297795U (en) * 2013-03-19 2013-11-20 福派管道系统(上海)有限公司 Connector structure of extrusion forming
CN103775761A (en) * 2014-02-26 2014-05-07 孙海潮 Pipeline connecting pipe fitting
CN204004917U (en) * 2014-07-30 2014-12-10 山东迅达化工集团有限公司 Pressure duct bindiny mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203011654U (en) * 2012-11-29 2013-06-19 重庆气体压缩机厂有限责任公司 Clamp used for pressure test of heat exchange tube
CN103016863A (en) * 2012-12-19 2013-04-03 中联重科股份有限公司 Pipeline connection structure and hydraulic pipeline
CN203115338U (en) * 2013-03-19 2013-08-07 福派管道系统(上海)有限公司 Compression type single ferrule fitting
CN203297795U (en) * 2013-03-19 2013-11-20 福派管道系统(上海)有限公司 Connector structure of extrusion forming
CN103775761A (en) * 2014-02-26 2014-05-07 孙海潮 Pipeline connecting pipe fitting
CN204004917U (en) * 2014-07-30 2014-12-10 山东迅达化工集团有限公司 Pressure duct bindiny mechanism

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Application publication date: 20190129

RJ01 Rejection of invention patent application after publication