CN106287046B - A kind of highly pressurised liquid two way seal pipe joint - Google Patents
A kind of highly pressurised liquid two way seal pipe joint Download PDFInfo
- Publication number
- CN106287046B CN106287046B CN201610944069.9A CN201610944069A CN106287046B CN 106287046 B CN106287046 B CN 106287046B CN 201610944069 A CN201610944069 A CN 201610944069A CN 106287046 B CN106287046 B CN 106287046B
- Authority
- CN
- China
- Prior art keywords
- fittings body
- pipeline
- piston ring
- working cavity
- annular working
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
Abstract
The present invention relates to a kind of highly pressurised liquid two way seal pipe joints, are connected for sealing pipeline.The pipe fitting is mainly made of fittings body, piston ring and sealing ring；The fittings body is symmetrical structure, there is the screw thread being connected with pipeline at its both ends, intermediate symmetry arranges two annular working cavity volumes, several fluid inlet channels are uniformly distributed on fittings body inner wall circumferencial direction, and ensures that each intake channel communicates simultaneously with two symmetrical annular working cavity volumes；The piston ring is symmetrically assemblied in two annular working cavity volumes of fittings body, and section one end is arc-shaped；The sealing ring is symmetrically mounted on annular working cavity volume both ends, and sealing ring arc surface one side keeps contacting with piston ring circular arc end face one side.Pipe joint structure proposed by the present invention advantageously reduces the leakage in high pressure down pipe road, while improves the reliability of pipeline connection.
Description
Technical field
The present invention relates to sealing pipeline interconnection technique field more particularly to a kind of highly pressurised liquid two way seal pipe joints.
Background technology
Different according to purposes, pipeline can be divided into petroleum pipeline, hydraulic pipeline and water supply pipe etc., Pipe installing arrangement
When, it is both needed to the pipeline of different length being attached, at present, pipe fitting is most widely used component in pipeline connection technology.
Pipe joint form is varied, and the most commonly used is ring flange and screw-type connection, and whether ring flange connects
Or it is threadedly coupled, purpose is all that seal for pipe joints is realized in increase end face to the pretightning force of sealing ring.Due to flange bolt and
When bearing high stress for a long time, sealing ring only works connection screw thread under the effect of initial pretightning force, without a continued compensation
Power keeps sealing state, and pipe fitting is caused to be susceptible to and loosens phenomenon, so current pipe fitting generally existing leakage problem,
It is leaked particularly under hyperbaric environment serious.Moreover, pipe seal uses one-way sealing form more, i.e. only leaned between two pipelines
It is sealed at connecting end surface one, can so increase the frequency that leakage occurs, it is also few at present that two pipelines are sealed respectively
Form occurs.
The content of the invention
The purpose of the present invention is exactly to solve the problems, such as in above-mentioned technology, proposes that a kind of highly pressurised liquid two way seal pipeline connects
Head is realized the continued compensation extruding force to sealing ring using cavity volume, special modality and the piston ring of floating in fittings body, is set simultaneously
Bi-directional symmetrical ring structure is put, pipeline connection leakage problem is reduced to realize.
To achieve the above object, it can be achieved through the following technical solutions, be described with reference to the drawings as follows：
A kind of highly pressurised liquid two way seal pipe joint, mainly by fittings body (3), piston ring (2) and sealing ring (4) group
Into the fittings body (3) is symmetrical structure, and there is the screw thread (b) being connected with pipeline (1) at both ends, and intermediate symmetry arranges two
Annular working cavity volume (c) is uniformly distributed several fluid inlet channels (a) on fittings body (3) inner wall circumferencial direction, and ensures every
It a intake channel (a) while is communicated with two symmetrical annular working cavity volumes (c)；Symmetrical be assemblied in of the piston ring (2) connects
In two annular working cavity volumes (c) of head body (3), it can slide axially when pipeline connects in working volumes (c), section
One end is arc-shaped；The sealing ring (4) is symmetrically mounted on the outer end of annular working cavity volume (c), and sealing ring (4) arc surface
One side keeps contacting with piston ring (2) circular arc end face one side.
During low pressure, the piston ring (2) is under sealing ring (4) and pipeline (1) axial compression power effect, perpendicular end surface
It is contacted with fittings body (3) shaft shoulder；During high pressure, for the piston ring (2) under fluid pressure effect, arc end faces out extruding
Sealing ring (4).
Fluid inlet channel (a) number is generally 6~10.
The present invention proposes a kind of highly pressurised liquid two way seal pipe joint, which has the advantages that following some：
The automatic sealing performance for improving connecting pipe.The present invention is not when fluid pressure is high in pipeline, by pipeline end face
Piston ring is expressed to fittings body axial direction shoulder for the sealing ring of arc-shaped with section, realizes initial preload sealing force.Work as pipeline
When interior liquid is high pressure, liquid is entered by the in vivo intake channel of connector in piston ring working volumes, highly pressurised liquid effect
In piston ring one side, piston ring is made to press to sealing ring, achievees the purpose that continued compensation seal pressure, and compensate pressure can be with
Fluid pressure is raised and increased, and realizes the automatic purpose for improving seal for pipe joints performance.
Symmetrical sealing structure can improve the reliability of pipeline connection.Pipe joint design of the present invention is symmetrical sealing structure, is made
Two pipeline end faces keep high pressure sealing state simultaneously, can improve the ability that pipeline resists shock and vibration, be carried so as to reach
The purpose of high pipeline sealing reliability.
Description of the drawings
Fig. 1 is the assembling schematic diagram of inventive pipeline connector.
Fig. 2 is inventive pipeline joint body schematic diagram.
Fig. 3 is inventive pipeline connector work schematic sectional representation.
Fig. 4 is 2 schematic diagram of inventive piston ring.
1. pipeline in attached drawing；2. piston ring；3. fittings body；4. sealing ring；
A. fluid inlet channel；B. connection screw thread；C. piston ring working volumes.
Specific embodiment
The particular content and embodiment further illustrated the present invention below in conjunction with the accompanying drawings.
As illustrated in fig. 1 and 2, a kind of highly pressurised liquid two way seal pipe joint, mainly by fittings body (3), piston ring (2) and
Sealing ring (4) forms, and the fittings body (3) is symmetrical structure, and there is the screw thread (b) being connected with pipeline (1) at both ends, intermediate right
Claim arrangement two annular working cavity volumes (c), several fluid inlet channels are uniformly distributed on fittings body (3) inner wall circumferencial direction
(a), and ensure each intake channel (a) while communicated with two symmetrical annular working cavity volumes (c)；The piston ring (2)
It is symmetrical to be assemblied in two annular working cavity volumes (c) of fittings body (3), axis can be done in working volumes (c) when pipeline connects
To slip, section one end is arc-shaped；The sealing ring (4) is symmetrically mounted on the outer end of annular working cavity volume (c), and close
Seal (4) arc surface one side keeps contacting with piston ring (2) circular arc end face one side.
During low pressure, the piston ring (2) is under sealing ring (4) and pipeline (1) axial compression power effect, perpendicular end surface
It is contacted with fittings body (3) shaft shoulder；During high pressure, for the piston ring (2) under fluid pressure effect, arc end faces out extruding
Sealing ring (4).
To ensure that fittings body (3) has enough intensity, while piston ring working volumes are smoothly entered beneficial to highly pressurised liquid
(c) in, fluid inlet channel (a) number is generally 6~10.
As shown in Figures 3 and 4, the present invention is when pipeline (1) interior fluid pressure is relatively low, by pipeline (1) end face and sealing ring
(4) piston ring (2) is expressed to the axial shoulder of fittings body (3), realize it is initial pre-tighten sealing force, at this time sealing state with it is common
Flange is identical with threaded connection.When pipeline (1) interior liquid be high pressure when, liquid by the intake channel (a) in fittings body (3) into
Entering into piston ring working volumes (c), highly pressurised liquid acts on piston ring (2) one side, makes piston ring (2) crush seal circle (4),
Achieve the purpose that continued compensation seal pressure, and compensate pressure as fluid pressure raises to increase, realize automatic improve
The purpose of seal for pipe joints performance.Pipe joint design of the present invention is symmetrical sealing structure, and two pipeline (1) end faces is made to keep high simultaneously
Means of press seals state can improve the ability that pipeline (1) resists shock and vibration, so as to achieve the purpose that improve sealing reliability.
Structure of the present invention can also be used for end cover, and the sealing passage being arranged symmetrically in fittings body is designed as one-way sealing
Structure can reduce end cover leakage.
Above-described embodiment is merely to illustrate the present invention, wherein the structure of each component, connection mode etc. are all that can be become
Change, every equivalents carried out on the basis of technical solution of the present invention and improvement, should not exclude the guarantor in the present invention
It protects outside scope.
Claims (3)
1. a kind of highly pressurised liquid two way seal pipe joint is mainly made of fittings body (3), piston ring (2) and sealing ring (4),
It is characterized in that：The fittings body (3) is symmetrical structure, and there are the screw thread (b) being connected with pipeline (1), intermediate symmetry in both ends
It arranges two annular working cavity volumes (c), several fluid inlet channels (a) is uniformly distributed on fittings body (3) inner wall circumferencial direction,
And ensure each intake channel (a) while communicated with two symmetrical annular working cavity volumes (c)；The piston ring (2) is symmetrical
It is assemblied in two annular working cavity volumes (c) of fittings body (3), axial cunning can be done in working volumes (c) when pipeline connects
Dynamic, section one end is arc-shaped；The sealing ring (4) is symmetrically mounted on the outer end of annular working cavity volume (c), and sealing ring
(4) arc surface one side keeps contacting with piston ring (2) circular arc end face one side.
2. a kind of highly pressurised liquid two way seal pipe joint according to claim 1, it is characterised in that：It is described during low pressure
Piston ring (2) sealing ring (4) and pipeline (1) axial compression power effect under, perpendicular end surface connects with fittings body (3) shaft shoulder
It touches；During high pressure, for the piston ring (2) under fluid pressure effect, arc end faces out crush seal circle (4).
3. a kind of highly pressurised liquid two way seal pipe joint according to claim 1, it is characterised in that：The liquid into
Mouth passage (a) number is generally 6~10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610944069.9A CN106287046B (en) | 2016-11-02 | 2016-11-02 | A kind of highly pressurised liquid two way seal pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610944069.9A CN106287046B (en) | 2016-11-02 | 2016-11-02 | A kind of highly pressurised liquid two way seal pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106287046A CN106287046A (en) | 2017-01-04 |
| CN106287046B true CN106287046B (en) | 2018-05-29 |
Family
ID=57719545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610944069.9A Expired - Fee Related CN106287046B (en) | 2016-11-02 | 2016-11-02 | A kind of highly pressurised liquid two way seal pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106287046B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939167A (en) * | 2019-12-30 | 2020-03-31 | 长江南京航道工程局 | Bidirectional sealing device for side suction port of trailing suction dredger |
| CN113431977B (en) * | 2021-07-31 | 2022-02-15 | 江苏正泰不锈钢产业有限公司 | Metal elbow joint |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1107327A (en) * | 1913-10-21 | 1914-08-18 | Fitz James Lewis | Pipe-coupling. |
| CN85205332U (en) * | 1985-12-02 | 1987-01-14 | 王家山 | Expanding section of pipeline sealed by the static pressure of fluid flowing in the pipeline |
| SE467423B (en) * | 1990-02-15 | 1992-07-13 | Flygt Ab Itt | Arrangement for sealing off two tubular coupling parts between a submersible pump assembly and an outlet line |
| DE19949880A1 (en) * | 1999-10-15 | 2001-04-19 | Fischer Georg Rohrleitung | Arrangement to seal pipelines; has rotationally symmetrical flexible seal arranged in groove in wall of inner pipeline facing outer pipeline, having sealing areas joined by connection area |
| CN101440902A (en) * | 2007-11-20 | 2009-05-27 | 中国船舶重工集团公司第七一○研究所 | Reverse water pressure seal pipeline joint |
| CN202327418U (en) * | 2011-12-01 | 2012-07-11 | 孟祥勇 | Pipe union |
| CN103542219A (en) * | 2013-09-25 | 2014-01-29 | 沈阳建筑大学 | Self-operated sealing sleeve compensator |
| CN206191105U (en) * | 2016-11-02 | 2017-05-24 | 海南大学 | Highly pressurised liquid two way seal pipe joint |
-
2016
- 2016-11-02 CN CN201610944069.9A patent/CN106287046B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1107327A (en) * | 1913-10-21 | 1914-08-18 | Fitz James Lewis | Pipe-coupling. |
| CN85205332U (en) * | 1985-12-02 | 1987-01-14 | 王家山 | Expanding section of pipeline sealed by the static pressure of fluid flowing in the pipeline |
| SE467423B (en) * | 1990-02-15 | 1992-07-13 | Flygt Ab Itt | Arrangement for sealing off two tubular coupling parts between a submersible pump assembly and an outlet line |
| DE19949880A1 (en) * | 1999-10-15 | 2001-04-19 | Fischer Georg Rohrleitung | Arrangement to seal pipelines; has rotationally symmetrical flexible seal arranged in groove in wall of inner pipeline facing outer pipeline, having sealing areas joined by connection area |
| CN101440902A (en) * | 2007-11-20 | 2009-05-27 | 中国船舶重工集团公司第七一○研究所 | Reverse water pressure seal pipeline joint |
| CN202327418U (en) * | 2011-12-01 | 2012-07-11 | 孟祥勇 | Pipe union |
| CN103542219A (en) * | 2013-09-25 | 2014-01-29 | 沈阳建筑大学 | Self-operated sealing sleeve compensator |
| CN206191105U (en) * | 2016-11-02 | 2017-05-24 | 海南大学 | Highly pressurised liquid two way seal pipe joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106287046A (en) | 2017-01-04 |
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