CN106885076A - A kind of flange pipeline attachment means - Google Patents
A kind of flange pipeline attachment means Download PDFInfo
- Publication number
- CN106885076A CN106885076A CN201510933665.2A CN201510933665A CN106885076A CN 106885076 A CN106885076 A CN 106885076A CN 201510933665 A CN201510933665 A CN 201510933665A CN 106885076 A CN106885076 A CN 106885076A
- Authority
- CN
- China
- Prior art keywords
- ring
- flange
- sealing
- retaining ring
- attachment means
- 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
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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
- F16L23/028—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder
-
- 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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
-
- 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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The invention discloses a kind of flange pipeline attachment means, the device includes sealing support body, two sealing rings, two retaining rings and two adpting flanges；The both sides of the sealing support body are successively sealing ring, retaining ring and adpting flange；Described adpting flange one end is provided with annular table, and annular table is inserted into sealing frame body, and its inner surface offsets with retaining ring, and its inner surface is inner conical surface near sealing ring side；The locking is equipped with opening, and inner ring surface is provided with snap ring or latch, and the nearly sealing ring side in its outer surface is male cone (strobilus masculinus)；The side of the sealing ring is connected with retaining ring, and opposite side offsets with the sealing surface of sealing support body.The design that the application is coordinated by sealing ring, retaining ring and flange, there is provided a kind of simple structure, easy for installation, good seal performance and the flange pipeline attachment means being connected firmly.
Description
Technical field
The present invention relates to a kind of pipeline transport system, and in particular to a kind of flange pipeline attachment means.
Background technology
In large-scale gas or liquid pipeline system, pipe line joint device seal durability is there is
Problem.
Folder seal washer is sealed with flange in fluid piping system, using just occurring after a period of time
Oxidation, it is aging the problems such as, cause system leakage and a series of other chain quality problems, and maintenance needs
Time, cost it is all very high.
For the installation of pipeline, generally using flange form connection, it is necessary to carry out Site Welding, Ran Houjin
Row leak-testing, if weld seam has the weld defects such as slag inclusion, needs are done over again, and the technical ability to in-site installation workman has
High requirement, and have because scene forbids getting angry, it is impossible to carry out the possibility of REPAIR WELDING.There is installation effectiveness low
Under, it is not easy to remove the problems such as；Flange connection is widely used in the fields such as oil, chemical industry, metallurgy, existing
In technology, flange connection also have it is a kind of be in the form of pad, be exactly two pipelines, pipe fitting or equipment,
First it is individually fixed on a ring flange, flange gasket is then added between two ring flanges, finally uses bolt
Two ring flanges are compressed a kind of dismountable joint for making sealing ring axially compressed to be combined closely with it,
But this flange connection is easily leaked in Practical Project, and leakage part is by pad oxidation or old mostly
Change what failure caused, once leakage, demounting bolt, lifting appliance are changed pad and pressure test etc. and can be indulged in again
Miss certain production cycle.Therefore a kind of flange seal convenient maintenance when needing initial stage to put into operation all the time, after
Phase operation can complete a kind of design structure safeguarded in a short time when going wrong.
Because the common applying working condition of flexible graphite sealing ring is HTHP, in an oxidizing environment, more than 450 DEG C
High temperature can just make its start oxidation；Under usual hyperbaric environment, pressure oscillation will not also cause flexibility substantially
Graphite is along the large stretch of extrusion in the gap on border；Therefore, flexible graphite sealing ring is used for (200 DEG C of the temperature of static sealing
Below) long-term safety is capable of achieving in low pressure (below 1.6MPa) fluid piping system reliably to seal.
The content of the invention
The problems such as in order to solve the life-span of pipeline connection presence, sealing and installation effectiveness in the prior art,
This application provides the flange pipeline connection of a kind of good sealing effect, long service life and firm stable performance
Device.Concrete technical scheme is as follows.
The application provides a kind of flange pipeline attachment means, the device include sealing support body (1), two it is close
Seal (2), two retaining rings (3) and two adpting flanges (4)；The both sides of sealing support body (1)
It is successively sealing ring (2), retaining ring (3) and adpting flange (4)；One end of the adpting flange (4)
Face is provided with the annular table (42) being connected with flange body (41), and the flange body (41) is annular,
Annular table (42) is inserted into sealing support body (1), its inner surface (43) and retaining ring (3) outer surface
Offset, and its inner surface is inner ring surface (431), it is inner conical surface (432) to be offseted with retaining ring (3) outer surface；
The retaining ring (3) inner ring surface (31) is provided with snap ring or latch (32), and its outer surface (33) is divided into outer
Anchor ring (331) and male cone (strobilus masculinus) (332) simultaneously offset with the inner conical surface (432) of adpting flange；The sealing
The side for enclosing (2) is connected with retaining ring (3), the sealing surface (11) of opposite side and sealing support body (1)
Offset.
Preferably, sealing ring (2) described herein is flexible graphite sealing ring.
Preferably, herein described device also includes stripping ring (5), and the stripping ring (5) is placed in sealing
The centre of support body (1), two ends connect with the pipeline (6) of both sides respectively.
Preferably, the stripping ring (5) is made up of elastomeric material.
When herein described pipeline is pipe with small pipe diameter, it is preferable that the retaining ring inner ring surface (31) is latch (32)
Shape, as a plurality of pointed tooth screw thread form, the attachment means of the application pass through pointed tooth screw thread clamping pipeline.When
Herein described pipeline be Large Diameter Pipeline when, above-mentioned pointed tooth screw thread be difficult with pipeline clamping, at this moment, in the application
The joint of the pipeline is provided with indent (61), corresponding with indent (61), retaining ring inner ring surface (31)
It is snap ring (32) shape；Or the joint of the pipeline (6) is provided with boss (61), accordingly, locking
Ring inner ring surface snap ring (32) is groove shapes.
Preferably, herein described retaining ring (3) is split ring；Retaining ring (3) two ends anchor ring
It is provided with one or more open slots (35).
Preferably, herein described retaining ring male cone (strobilus masculinus) (332) length is not less than adpting flange inner conical surface (432)
Length, the inner conical surface (432) of the bottom radius not less than adpting flange annular table of the retaining ring male cone (strobilus masculinus) (332)
Bottom radius.
Preferably, the flange body (41) of herein described adpting flange is integrated with annular table (42)
Structure or by being welded to connect.
In order that flat flange is connected with sealing support body more consolidate and convenient construction, it is preferable that described
The outer surface of adpting flange annular table (42) is provided with corresponding flower with the inner surface of sealing support body (1) both sides
Key draw-in groove (12).
In actual application, connection is inserted in successively respectively at two pipe joints of pipeline (6) first
Flange (4), retaining ring (3), sealing ring (2), then by the annular table (42) of adpting flange (4)
On spline insert respectively sealing support body (1) two ends spline in, with bolt by position to good two
Flange is connected, and tightens two connecting bolts of adpting flange (4), completes to install.
Beneficial effect：
1) the application is by retaining ring and the matching design of flange, there is provided a kind of simple structure, installation side
Just, good seal performance and the attachment means being connected firmly；
2) carbon seal ring is used for static pipe-line system by the application, is equipped with corresponding attachment means, significantly
Improve the service life of static pipe-line system.
Brief description of the drawings
The configuration schematic diagram of Fig. 1 flange pipeline attachment means；
The cross-sectional view of Fig. 2 flange pipeline attachment means；
Fig. 3 adpting flanges and the structural representation for sealing support body；
Fig. 4 retaining rings lower surface is the structural representation of snap ring shape；
Fig. 5 retaining rings lower surface is the structural representation of latch shape；
In figure：1- sealing support bodys, 2- sealing rings, 3- retaining rings, 4- adpting flanges, 5- stripping rings, 6- pipelines,
11- sealing surfaces, 12- spline draw-in grooves, 31- retaining ring inner ring surfaces, 32- snap rings or latch, outside 33- retaining rings
Surface, 331- retaining ring outer ring surfaces, 332- retaining ring male cone (strobilus masculinus)s, 35- open slots, 36- retaining ring facades,
37- is open, 41- flange bodies, 42- annular tables, 43- adpting flange inner surfaces, table in 431- adpting flanges
The inner ring surface in face, the inner conical surface of 432- adpting flanges, 421- annular table facades, 61- indents or boss.
Specific embodiment
The application is further explained below in conjunction with the accompanying drawings.
As shown in Figure 1-2, it is a kind of flange pipeline attachment means structural representation that the application is provided, should
Device includes the sealing retaining ring 3 of sealing ring 2, two of support body 1, two and two adpting flanges 4；It is described close
The both sides for sealing support body 1 are successively sealing ring 2, retaining ring 3 and adpting flange 4；The adpting flange 4
End face is provided with the annular table 42 being connected with flange body 41, the flange body 41 and ring of the adpting flange
Shape platform 42 is structure as a whole or by being welded to connect, and the flange body 41 is annular, annular table 42
It is inserted into sealing support body 1, its inner surface 43 offsets with the outer surface of retaining ring 3, and its inner surface is interior
Anchor ring 431, it is male cone (strobilus masculinus) 432 to be offseted with the outer surface of retaining ring 3；The inner ring surface 31 of the retaining ring 3 is provided with
Snap ring or latch 32,33 points of its outer surface be outer ring surface 331 and male cone (strobilus masculinus) 332 and with adpting flange in
The conical surface 432 offsets；The length of retaining ring male cone (strobilus masculinus) 332 is not less than the length of inner conical surface 432 of adpting flange,
Inner conical surface 432 bottom radius of the bottom radius of the retaining ring male cone (strobilus masculinus) 332 not less than adpting flange annular table；
The side of the sealing ring 2 is connected with retaining ring 3, and opposite side offsets with the sealing surface 11 of sealing support body 1.
Preferably, sealing ring described herein 2 is flexible graphite sealing ring.
Dismounting and change part for convenience, it is preferable that herein described device also includes stripping ring 5, described
Stripping ring 5 is placed in the centre of sealing support body 1, and two ends connect with the pipeline 6 of both sides respectively.Preferably, institute
Stripping ring 5 is stated to be made up of elastomeric material.
When herein described pipeline is pipe with small pipe diameter, it is preferable that the retaining ring inner ring surface 31 is the shape of latch 32
Shape, as a plurality of pointed tooth screw thread form, the attachment means of the application are such as schemed by pointed tooth screw thread clamping pipeline
Shown in 4.When herein described pipeline be Large Diameter Pipeline when, above-mentioned pointed tooth screw thread be difficult with pipeline clamping, at this moment,
The joint of pipeline described herein is provided with indent 61, corresponding with indent 61, retaining ring inner ring surface 31
It is the shape of snap ring 32；Or the joint of the pipeline 6 is provided with boss 61, accordingly, retaining ring inner ring surface
Snap ring 33 is groove shapes；As shown in Figure 5.Preferably, herein described retaining ring 3 is split ring；
The two ends anchor ring of the retaining ring 3 is provided with one or more open slots 35.
In order that flat flange is connected with sealing support body more consolidate and convenient construction, it is preferable that described
The upper surface of adpting flange annular table 42 is provided with corresponding spline draw-in groove with the inner surface of sealing support body 1 both sides
12, concrete structure is as shown in Figure 3.
During actual installation, connection method is inserted in successively respectively at two pipe joints of pipeline 6 first
Blue 4, retaining ring 3, sealing ring 2, then the two ends for sealing support body 1 are inserted the adpting flange of both sides respectively
In 4, adjustment alignment spline draw-in groove 12 tightens two adpting flanges 4, completes to install.
Specifically operation principle is：In actual application, first in two pipe joint punishment of pipeline 6
Adpting flange 4, retaining ring 3 and sealing ring 2 are not inserted in successively, then by the annular of adpting flange (4)
Spline on platform (42) is inserted in the spline at the two ends of sealing support body (1) respectively, with bolt by position
Two good flanges are connected, two connecting bolts of adpting flange (4), adpting flange axial movement are tightened
Make annular table 42 extrude retaining ring 3, retaining ring 3 under the pushing of adpting flange annular table 42, vertically
And radial motion, adpting flange annular table 42 continues to push, outside its inner conical surface 432 extruding retaining ring 3
The conical surface 332, makes it radially continue to run with, and then the latch 32 of retaining ring 3 is engaged pipeline or snap ring
32 agree with indent 61, and retaining ring 3 has open slot 35, it is ensured that the more large deformation radially of retaining ring 3.
Adpting flange annular table 42 continues to push retaining ring 3, makes the male cone (strobilus masculinus) 432 in adpting flange annular table 42
Pressure retaining ring 3 reaches the radial direction maximum amount of feeding of retaining ring 3.Adpting flange extruding annular table 42 drives lock
Tight ring 3 is advanced axially relative with pipeline, and crush seal circle 2 compresses sealing ring 2, and sealing ring 2 is under extrusion
Deform radially inward and outwards, will be fully sealed between pipeline 6 and sealing support body 1.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention not office
Be limited to this, any one skilled in the art in the technical scope of present disclosure, according to this
The technical scheme of invention and its inventive concept are subject to equivalent or change, should all cover in protection of the invention
Within the scope of.
Claims (10)
1. a kind of flange pipeline attachment means, it is characterised in that the device include sealing support body (1), two it is close
Seal (2), two retaining rings (3) and two adpting flanges (4)；The both sides of sealing support body (1)
It is successively sealing ring (2), retaining ring (3) and adpting flange (4)；One end of the adpting flange (4)
Face is provided with the annular table (42) being connected with flange body (41), and the flange body (41) is annular,
Annular table (42) is inserted into sealing support body (1), its inner surface (43) and retaining ring (3) outer surface
Offset, and its inner surface is inner ring surface (431), it is inner conical surface (432) to be offseted with retaining ring (3) outer surface；
The retaining ring (3) inner ring surface (31) is provided with snap ring or latch (32), and its outer surface (33) is divided into outer
Anchor ring (331) and male cone (strobilus masculinus) (332) simultaneously offset with the inner conical surface (432) of adpting flange inner surface；Institute
The side for stating sealing ring (2) is connected with retaining ring (3), the sealing surface of opposite side and sealing support body (1)
(11) offset.
2. a kind of flange pipeline attachment means according to claim 1, it is characterised in that the sealing ring
(2) it is flexible graphite sealing ring.
3. a kind of flange pipeline attachment means according to claim 1, it is characterised in that described device
Also include stripping ring (5), the stripping ring (5) be placed in sealing support body (1) centre, two ends respectively with
The pipeline (6) of both sides connects.
4. a kind of flange pipeline attachment means according to claim 3, it is characterised in that the dismounting
Ring (5) is made up of elastomeric material.
5. a kind of flange type pipe fitting assembling pipe joint according to claim 1, it is characterised in that described
The latch (32) of retaining ring inner ring surface is a plurality of pointed tooth screw thread.
6. a kind of flange type pipe fitting assembling pipe joint according to claim 1, it is characterised in that described
The joint of pipeline (6) is provided with indent (61), and accordingly, retaining ring inner ring surface snap ring (32) is boss
Shape；Or the joint of the pipeline (6) is provided with boss (61), accordingly, retaining ring inner ring surface snap ring
(32) it is groove shapes.
7. a kind of flange pipeline attachment means according to claim 1, it is characterised in that the locking
Ring (3) is split ring；Retaining ring (3) two ends anchor ring is provided with one or more open slots (35).
8. a kind of flange pipeline attachment means according to claim 1, it is characterised in that the locking
Ring male cone (strobilus masculinus) (332) length is not less than inner conical surface (432) length of adpting flange, the retaining ring outer cone
Bottom radius of the bottom radius in face (332) not less than adpting flange annular table inner conical surface (432).
9. a kind of flange pipeline attachment means according to claim 1, it is characterised in that the connection
The flange body (41) of flange is structure as a whole or by being welded to connect with annular table (42).
10. a kind of flange pipeline attachment means according to claim 1, it is characterised in that the connection
The outer surface of flange annular table (42) is provided with corresponding spline card with the inner surface of sealing support body (1) both sides
Groove (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510933665.2A CN106885076A (en) | 2015-12-15 | 2015-12-15 | A kind of flange pipeline attachment means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510933665.2A CN106885076A (en) | 2015-12-15 | 2015-12-15 | A kind of flange pipeline attachment means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106885076A true CN106885076A (en) | 2017-06-23 |
Family
ID=59174848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510933665.2A Pending CN106885076A (en) | 2015-12-15 | 2015-12-15 | A kind of flange pipeline attachment means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106885076A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225073A (en) * | 2017-07-28 | 2017-10-03 | 南京律智诚专利技术开发有限公司 | A kind of petroleum pipe fitting application drying plant |
| CN107829821A (en) * | 2017-11-24 | 2018-03-23 | 张家港市三林金泰新能源有限公司 | The adpting flange of novel energy internal combustion engine |
| CN108361456A (en) * | 2018-04-12 | 2018-08-03 | 无锡惠玺流体设备科技有限公司 | Explosion-proof multifrnction connector and its installation method |
| CN110185860A (en) * | 2019-05-17 | 2019-08-30 | 安徽京仪自动化装备技术有限公司 | A kind of connection type of gas path pipe |
| CN111039036A (en) * | 2019-12-16 | 2020-04-21 | 朱见东 | Flexible cinder valve |
| CN111594671A (en) * | 2019-02-21 | 2020-08-28 | 株洲鼎固机车配件有限公司 | Fastening piece |
| CN114526162A (en) * | 2022-01-18 | 2022-05-24 | 中国科学院工程热物理研究所 | Air inlet channel sealing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832379A (en) * | 1987-01-28 | 1989-05-23 | The Pipe Line Development Company | Collet grip riser fitting |
| CN200946729Y (en) * | 2006-09-08 | 2007-09-12 | 广东强人管业有限公司 | Flange type pipeline connector |
| CN101105252A (en) * | 2006-07-12 | 2008-01-16 | 黄建聪 | Pipe joint |
| US20100032945A1 (en) * | 2006-04-28 | 2010-02-11 | Baker William J | Apparatus for connecting tubular bodies |
| CN203847861U (en) * | 2014-03-14 | 2014-09-24 | 张国然 | Flange assembly |
-
2015
- 2015-12-15 CN CN201510933665.2A patent/CN106885076A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832379A (en) * | 1987-01-28 | 1989-05-23 | The Pipe Line Development Company | Collet grip riser fitting |
| US20100032945A1 (en) * | 2006-04-28 | 2010-02-11 | Baker William J | Apparatus for connecting tubular bodies |
| CN101105252A (en) * | 2006-07-12 | 2008-01-16 | 黄建聪 | Pipe joint |
| CN200946729Y (en) * | 2006-09-08 | 2007-09-12 | 广东强人管业有限公司 | Flange type pipeline connector |
| CN203847861U (en) * | 2014-03-14 | 2014-09-24 | 张国然 | Flange assembly |
Non-Patent Citations (1)
| Title |
|---|
| 成大先: "《机械设计图册》", 31 March 2000, 化学工业出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225073A (en) * | 2017-07-28 | 2017-10-03 | 南京律智诚专利技术开发有限公司 | A kind of petroleum pipe fitting application drying plant |
| CN107829821A (en) * | 2017-11-24 | 2018-03-23 | 张家港市三林金泰新能源有限公司 | The adpting flange of novel energy internal combustion engine |
| CN108361456A (en) * | 2018-04-12 | 2018-08-03 | 无锡惠玺流体设备科技有限公司 | Explosion-proof multifrnction connector and its installation method |
| CN111594671A (en) * | 2019-02-21 | 2020-08-28 | 株洲鼎固机车配件有限公司 | Fastening piece |
| CN110185860A (en) * | 2019-05-17 | 2019-08-30 | 安徽京仪自动化装备技术有限公司 | A kind of connection type of gas path pipe |
| CN111039036A (en) * | 2019-12-16 | 2020-04-21 | 朱见东 | Flexible cinder valve |
| CN111039036B (en) * | 2019-12-16 | 2021-06-11 | 雪勒科技(金华)有限公司 | Flexible cinder valve |
| CN114526162A (en) * | 2022-01-18 | 2022-05-24 | 中国科学院工程热物理研究所 | Air inlet channel sealing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106885076A (en) | A kind of flange pipeline attachment means | |
| CN205424190U (en) | Flange formula pipe fitting seal for pipe joints device | |
| CN106885075A (en) | A kind of cavate flanged fitting assembling pipe joint | |
| CN206496122U (en) | A kind of chicksan | |
| CN107461556A (en) | Flange connecting assembly and its handling method, pipeline connecting device and cooler unit | |
| CN205026308U (en) | Be applied to fixture structure of pipeline leaking stoppage | |
| CN203384527U (en) | Pipe connector | |
| CN202017836U (en) | Stainless steel hard-seal pipe connector | |
| CN205424194U (en) | Flange formula seal for pipe joints device | |
| CN105135105A (en) | Twisted type novel flange | |
| CN106885077A (en) | A kind of assembling pipe joint of use flexible graphite sealing ring static sealing | |
| CN106322049B (en) | A kind of fastening type isolation agent injecting type pipeline jig | |
| CN201925631U (en) | Stainless steel hard-seal pipe connector | |
| CN102116397A (en) | Stainless steel hard-seal pipe joint | |
| CN206708600U (en) | A kind of outer fixed ring type HDPE Flange attachment means | |
| CN108386629A (en) | The method of pipe jointer secondary seal | |
| CN204358089U (en) | A kind of self tightening different angle flank of tooth bipyramid ring pad | |
| CN107270016A (en) | Self-sealing rotary compensator | |
| CN103604021A (en) | Coupled pipe leakage rush repair clamp and design method thereof | |
| CN208177007U (en) | A kind of high vacuum rectification tower | |
| CN201517668U (en) | Pipe connecting structure | |
| CN207568535U (en) | For sealing the polished rod sealer device of polished rod and packing | |
| CN207112217U (en) | A kind of straight pipeline self-tightening sealing formula blocking clamper | |
| CN101586730A (en) | Quick high-pressure no transmission stoppage urgent repair method and jig | |
| JPH10227380A (en) | Flanged pipe joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170623 |
|
| RJ01 | Rejection of invention patent application after publication |