CN207729080U - A kind of pressure pipeline connection structure - Google Patents
A kind of pressure pipeline connection structure Download PDFInfo
- Publication number
- CN207729080U CN207729080U CN201721872027.5U CN201721872027U CN207729080U CN 207729080 U CN207729080 U CN 207729080U CN 201721872027 U CN201721872027 U CN 201721872027U CN 207729080 U CN207729080 U CN 207729080U
- Authority
- CN
- China
- Prior art keywords
- conduit
- connection structure
- pressure pipeline
- pipeline connection
- fittings body
- 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.)
- Active
Links
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
Abstract
A kind of pressure pipeline connection structure, including：Axial arranged conduit and fittings body and cap nut further include：Casing, casing include：The sleeve body arranged and be socketed positioned at the periphery of conduit, and the flange sections positioned at sleeve body bottom cylindrical week；Flange sections are located at the inside of cap nut, and the limit that leans respectively with the outer end face of the inner face of cap nut and fittings body of the both sides of the face of flange sections is engaged；And in the region that sleeve body and conduit coincide, sleeve body, which has with conduit towards axis, squeezes the jointing for forming Inward deflection and being mutually fixedly connected through press fitting, its is simple in structure and easy for installation, and, on-site construction operations low to pipe size required precision are simple, are connected firmly, sealed reliable.
Description
Technical field
The utility model connects knot about a kind of pipe connecting structure, in particular for the internal pipeline with certain pressure
Structure.
Background technology
Usually there is the connection between a large amount of pipeline in pipeline engineering project, including between the pipeline of different tube diameters
Transformation connection, the connection between pipeline and related valve component.Important indicator as pipeline quality of connection comprising leakproofness
The unfailing performance of connection that can be between pipeline.Especially in the pipe-line system with certain pressure (such as less than 70Mpa,
Especially 35-70MPa), deposit the risk being in axial direction detached between tubes.Therefore pressure pipeline connection structure is mutual solid
It is fixed particularly important.
The connection structure of common pressure pipeline is divided into welded fitting and weldless connection, bite type structure, welding
Bulb type structure, flared type structure, flanging type structure, walform formula structures etc..
Bite type structure forms sealing, while banding conduit between conduit and fittings body inner conical surface, including preventing conduit
Pressure effect is lower to extract.But it is very high to the outer diameter requirement of conduit, to requirements such as the sizes, hardness, elasticity of forward and backward cutting ferrule
It is very high, while also proposed more harsh requirement to the operation of installation process, there is deviation, gently then causes in any one link
Connector leaks, heavy then connector is caused to loosen, and pressure leaks, or even causes safety accident.
It is also a kind of common conduit interconnection technique to weld bulb type connection structure, is widely used in aerospace field,
But globe joint must be welded with conduit, could be realized that pipeline connects, be made troubles to site operation.
Flared fitting, flanging type connector, the tension pull out force of walform formula connectors are stronger, but are required for expensive, knot
The bulky special equipment of structure carries out pressure processing to the end of conduit, is allowed to be deformed into required horn mouth, tack or part
Bulge-structure is made troubles to site operation.
In conclusion all there is certain ask in existing various forms seal nipple, craftsmanship, sealing reliability etc.
Topic, all has that operative weldability is poor, sealing reliability is low, structure is not strong enough, corollary equipment is complicated, product cost is high, to leading
The problems such as pipe size required precision is excessively high.
Utility model content
The purpose of this utility model is：In higher pressure fluid application field, provide it is a kind of simple in structure easy for installation, simultaneously
, on-site construction operations low to pipe size required precision are simple, are connected firmly, the pipe connecting structure of sealed reliable.
To realize the above-mentioned technical purpose, the utility model provides a kind of pressure pipeline connection structure comprising：Along pipeline axis
It is mutually screwed the housing spiral shell connecting to the conduit and fittings body arranged and connected, and with the one end outer surface of the fittings body
Mother, wherein：It further includes：Casing, described sleeve pipe include：The sleeve body arranged and be socketed positioned at the periphery of the conduit, and
Positioned at the flange sections of described sleeve pipe body bottom portion excircle；The flange sections are located at the inside of the cap nut, and described convex
The both sides of the face of rim segment, which lean to limit to contact respectively with the outer end face of the inner face of the cap nut and the fittings body, matches
It closes；And in the region that described sleeve pipe ontology and the conduit coincide, described sleeve pipe ontology and the conduit have towards axis
Line squeezes the jointing for forming Inward deflection and being mutually fixedly connected through press fitting.
As a further improvement, in the jointing, the tube wall of described sleeve pipe ontology, which has to squeeze through press fitting, to be become
The tube wall of the outer crimp section to its axis offset that shape is formed, the conduit has and the outer crimp section phase
It corresponds to and abuts that position-limited hoop fastens the interior crimp section of connection.
As a further improvement, the radial cross-section of the outer crimp section and the interior crimp section is equal
For regular polygon.
As a further improvement, the outer crimp section and the interior crimp section all have to respective axis
The indent indented area of line skew, the indent indented area have multiple and in the along the circumferential direction relatively described uniform cloth of regular polygon
Set, and on each face of the regular polygon in axial direction have two or three.
As a further improvement, the indent indented area is rectangle, the axial width of the indent indented area be 2 to
5 millimeters and mutually axially interval width be 3 to 6 millimeters, the regular polygon is square or regular hexagon.
As a further improvement, the inside of the fittings body includes：Internal pipeline matches with the outer surface of the conduit
The connecting hole of conjunction, and the end outer surface of the fittings body has the external screw thread area being mutually threadedly coupled with the cap nut.
As a further improvement, between the connecting hole and the outer end face, the inside of the fittings body also has
Along the seal chamber of axis arrangement；And the O-ring for being arranged in the end of conduit periphery is located in the seal chamber.
As a further improvement, also axial arranged in the seal chamber to have a baffle ring in the outside of the O-ring, it is described
The limit that leans respectively with the bottom side of the flange sections and the O-ring of the both sides of baffle ring is engaged.
As a further improvement, the other end of the fittings body, which is fixedly connected with, becomes diametered duct or conduit component.
As a further improvement, the conduit is the cylindrical tube with uniform wall thickness and diameter, described sleeve pipe ontology
For the cylindrical tube with uniform wall thickness and diameter, and the external screw thread area of the fittings body is isodiametric cylindrical surface, and described
The caliber of conduit is less than or equal to 2 inches.
Casing is fixed by the cap nut of end for the utility model, while by being pressed crimp by casing
It is fixed in the axial direction with conduit, it is simple to the structure of conduit and casing and easy for installation.Simultaneously to pipe size precision
It is required that low, on-site construction operations are simple, are connected firmly, sealed reliable, can be applied to less than 70MPa's (especially 35-70MPa)
Pressure pipeline connects.
Description of the drawings
Fig. 1 is fittings body one end connection diagram；
Fig. 2 is casing schematic diagram；
Fig. 3 is fittings body schematic diagram；
Fig. 4 is fittings body both ends connection diagram；
Fig. 5 is schematic diagram before briquetting press fitting；
Fig. 6 is the cross-sectional view of Fig. 5；
Fig. 7 is that briquetting is pressed schematic diagram；
Fig. 8 is the cross-sectional view of Fig. 6；With
Fig. 9 is the schematic diagram of briquetting.
Reference numeral：Conduit 1, fittings body 2, outer end face 21, connecting hole 22, seal chamber 23, cap nut 3, casing 4, set
Tube body 41, flange sections 42, indent indented area 44, O-ring 5, baffle ring 6, briquetting 7 are closed spacing zone 72, impression item 73, groove
74, cavity 75 becomes diametered duct 8.
Specific implementation mode
As shown in Figure 1 to 9, the utility model provides a kind of pressure pipeline connection structure comprising：It is axial arranged along pipeline
And the conduit 1 and fittings body 2 connected, and the cap nut 3 connecting that is mutually screwed with the end outer surface of the fittings body 2,
Wherein：It further includes：Casing 4, described sleeve pipe 4 include：The sleeve body 41 arranged and be socketed positioned at the periphery of the conduit 1,
With the flange sections 42 positioned at described sleeve pipe ontology 41 bottom cylindrical week；The flange sections 42 are located at the inside of the cap nut 3,
And the both sides of the face of the flange sections 42 21 phase of outer end face with the inner face of the cap nut 3 and the fittings body 2 respectively
It is engaged against limit；And in the region that described sleeve pipe ontology 41 and the conduit 1 coincide, 41 He of described sleeve pipe ontology
The conduit 1, which has towards axis, squeezes the jointing for forming Inward deflection and being mutually fixedly connected through press fitting.
Casing is fixed by the cap nut of end for the utility model, while being become by being pressed to squeeze towards axis
Casing and conduit are fixed shape in the axial direction, form being fixedly connected for indent, it is simple to the structure of conduit and casing and
It is easy for installation., on-site construction operations low to pipe size required precision are simple simultaneously, are connected firmly, sealed reliable, can be applied to
Less than the pressure pipeline connection of 70MPa (especially 35-70MPa).
As a further improvement, in the jointing, the tube wall of described sleeve pipe ontology 41 has to be squeezed through press fitting
The outer crimp section to its axis offset formed is deformed, the tube wall of the conduit 1 has and the outer crimp area
Section is corresponding and abuts that position-limited hoop fastens the interior crimp section of connection.
As a further improvement, the radial cross-section of the outer crimp section and the interior crimp section is equal
For regular polygon.
As a further improvement, the outer crimp section and the interior crimp section all have to respective axis
The indent indented area 44 of line skew, the indent indented area 44 have multiple and equal in the along the circumferential direction relatively described regular polygon
Even arrangement, and on each face of the regular polygon in axial direction have two or three.
As a further improvement, the indent indented area 44 is rectangle, the axial width of the indent indented area 44
For 2 to 5 millimeters and mutually axially interval width is 3 to 6 millimeters, and the regular polygon is square or regular hexagon.
As a further improvement, the inside of the fittings body 2 includes：Internal pipeline, the outer surface phase with the conduit 1
The connecting hole 22 of cooperation, and the end outer surface of the fittings body 2 has the external screw thread being threadedly coupled with 3 phase of the cap nut
Area.
As a further improvement, between the connecting hole 22 and the outer end face 21, the inside of the fittings body 2 is also
With the seal chamber 23 arranged along axis；And the O-ring 5 for being arranged in 1 end periphery of the conduit is located in the seal chamber 23.
As a further improvement, also axial arranged in the outside of the O-ring 5, the seal chamber 23 to have baffle ring 6.
It is as a further improvement, also axial arranged in the outside of the O-ring 5, the seal chamber 23 to have baffle ring 6,
The limit that leans respectively with the bottom side of the flange sections 42 and the O-ring 5 of the both sides of the baffle ring 6 is engaged.
As a further improvement, the other end of the fittings body 2, which is fixedly connected with, becomes diametered duct 8 or conduit component.
The connection structure provided by the utility model that fittings body 2 can be used continues to connect other conduit components, such as valve, or as schemed
Become diametered duct 8 shown in 4, fittings body both ends connect different conduits, realize the connection of upstream and downstream.
As a further improvement, the conduit 1 is the cylindrical tube with uniform wall thickness and diameter, described sleeve pipe ontology
41 be the cylindrical tube with uniform wall thickness and diameter, and the external screw thread area of the fittings body 2 is isodiametric cylindrical surface, and institute
The caliber for stating conduit 1 is less than or equal to 2 inches.The utility model without using the special knots such as angle of inclination, flange in the prior art
Structure is reliably connected using can be thus achieved using cylindrical pipe member.
Correspondingly, a kind of installation tool pressing tongs of the utility model offer and briquetting, are pressed as used in the utility model
Its structure of holding tool is also simple, simple operations and realizes fixation at the scene.In a kind of pressure pipeline company described in the utility model
In binding structure, the jointing is pressed crimp by pressing tongs and is molded, and opposite opening and closing is respectively disposed with inside the pressing tongs
The briquetting 7 of movement, the inside of the briquetting 7 have：It leans positioned at middle part and with the jointing and contacts and it is pressed
The molding press fitting area of crimp, and positioned at the closure spacing zone 72 of press fitting area's radial direction upper and lower ends.
As a further improvement, the impression item 73 of protrusion is disposed in the press fitting area.
As a further improvement, the impression item 73 has a plurality of and spaced parallel arrangement, in the adjacent pressure
There is groove 74 between trace item 73.
As a further improvement, the axial width of the impression item 73 is 2 to 5 millimeters, the axial width of the groove
It is 3 to 6 millimeters.
As a further improvement, the impression item 73 has two or three.
As a further improvement, the outside of the briquetting 7 has and the matched arc surface of the pressing tongs.
As a further improvement, the press fitting area is along the middle part for being axially located the briquetting 7 of the briquetting 7, and institute
The axial both ends for stating briquetting 7 also have cavity 75.
As a further improvement, the pressing tongs is hand-hydraulic pressing tongs or electric hydaulic pressing tongs.
The utility model connection structure has multiple technique effects and advantage：
1. the size tolerance requirements of pair conduit are not high, various domestic conduits can be generally adapted to, need not be connect as bite type tube
Head like that, has purchased the import cutting ferrule of certain company, must just buy its mating Imported Precision conduit；
2. pair operator's technical merit and operating process requirement are low, it is not required to train by complexity, you can operation；
3. kit is simple, cheap, using conventional manual or Electric hydraulic tool, mating special caliper, you can
Implement the crimping of conduit scene；Need not the matched price as flared fitting, flanging type connector, walform formula connectors it is expensive,
Inconvenient complex device is carried, need not also be welded；
4. the crimp by casing provides powerful anti-pulling-out force, it is connected firmly, antivibration kinetic force is strong, and there is no draw
De- hidden danger；
5. adding the high pressure seal structure that O-ring combines using baffle ring, it is widely portable to less than 70MPa (especially 35-
70MPa) high pressure gas occasion, sealed reliable, repeat assembled, only need to change baffle ring and O-ring, have than collar joint,
The first-class hard seal nipple of solder sphere more repeats assembly number；
6. superpressure explosion risk is not present：Under extreme pressure, axial small shifting will be generated between casing and conduit
It is dynamic, after conduit is withdrawn into except O-ring position, overpressure can safe release, to avoid conduit superpressure explosion；
7. having apparent conduit purchase cost, product cost and corollary equipment purchase cost advantage.
The pipeline connected using the utility model can be can be used for (special less than 70MPa by 3 times of hydraulic pressure strength experiment examinations
Not 35-70MPa) pressure environment, such as electric piston compressor.
Correspondingly, the utility model provides a kind of pressure pipeline connection method comprising：
Step 1：Casing 4 is sleeved on to the periphery of conduit 1 in an axial direction, described sleeve pipe 4 includes：Positioned at the outer of the conduit 1
Week arranges and the sleeve body 41 that is socketed, and positioned at the flange sections 42 in described sleeve pipe ontology 41 bottom cylindrical week, and the flange
The periphery of section 42 is set with cap nut 3；
Step 2：The cap nut 3 is threadedly coupled with the one end of fittings body 2, and makes the flange sections 42
The both sides of the face limit that leans respectively with the outer end face 21 of the inner face of the cap nut 3 and the fittings body 2 is engaged；
Step 3：In the region that described sleeve pipe ontology 41 and the conduit 1 coincide, squeezed by being pressed towards axis
Inward deflection is formed, described sleeve pipe ontology 41 is fixedly connected with the conduit 1 and forms jointing.
As a further improvement, the pressure in the pipeline is less than 70MPa, preferably 35-70MPa.
As a further improvement, the one end outer surface of the fittings body 2 has and is threadedly coupled with the cap nut 3
External screw thread.
As a further improvement, in step 1,1 end periphery of the conduit is disposed with O-ring 5.
As a further improvement, between the connecting hole 22 and the outer end face 21, in the connecting hole 22 and institute
Between stating outer end face 21, also there is the seal chamber 23 arranged along axis, the O-ring 5 to be located at described for the inside of the fittings body 2
In seal chamber 23；It is also axial arranged in the seal chamber 23 to have a baffle ring 6 and in the outside of the O-ring 5, the two of the baffle ring 6
Side leans with the bottom side of the flange sections 42 and the O-ring 5 respectively limits the both sides difference for the baffle ring 6 that is engaged
It is engaged with the limit that leans of the bottom side and the O-ring 5 of the flange sections 42.
As a further improvement, the other end of the fittings body 2, which is fixedly connected with, becomes diametered duct 8 or conduit component.
As a further improvement, the conduit 1 is the cylindrical tube with uniform wall thickness and diameter, described sleeve pipe ontology
41 be the cylindrical tube with uniform wall thickness and diameter, and the external screw thread area of the fittings body 2 is isodiametric cylindrical surface.
As a further improvement, in step 3, the jointing is pressed crimp by pressing tongs and is molded, described
The briquetting 7 of opposite opening and closing movement is respectively disposed with inside pressing tongs, the inside of the briquetting 7 has：Positioned at middle part and with the company
It connects section and leans and contact and be pressed the molding press fitting area of crimp to it, and positioned at press fitting area's radial direction upper and lower ends
It is closed spacing zone 72.
As a further improvement, the impression item 73 of two or three protrusion, the pressure are disposed in the press fitting area
Trace item 73 has a plurality of and spaced parallel arrangement, has groove 74 between the adjacent impression item 73；The impression item
73 axial width is 2 to 5 millimeters, and the axial width of the groove is 3 to 6 millimeters.
As a further improvement, the pressing tongs is hand-hydraulic pressing tongs or electric hydaulic pressing tongs.
It should be appreciated that the utility model scope of the claimed is not limited to non-limiting embodiments, it should be understood that non-limiting reality
Scheme is applied to illustrate as just example.The protection domain of the desired essence of the application is more embodied in independent claims
The range of offer and its dependent claims.
Claims (10)
1. a kind of pressure pipeline connection structure comprising：Conduit (1) and fittings body (2) axial arranged along pipeline and connect, and
Mutually be screwed the cap nut (3) connecting with the one end outer surface of the fittings body (2), it is characterised in that：
It further includes：Casing (4), described sleeve pipe (4) include：The casing sheet arranged and be socketed positioned at the periphery of the conduit (1)
Body (41), and the flange sections (42) positioned at described sleeve pipe ontology (41) bottom cylindrical week；
The flange sections (42) are located at the inside of the cap nut (3), and the both sides of the face of the flange sections (42) respectively with
The limit that leans of the inner face of the cap nut (3) and the outer end face (21) of the fittings body (2) is engaged；And
In the region that described sleeve pipe ontology (41) and the conduit (1) coincide, described sleeve pipe ontology (41) and the conduit
(1) have towards axis and squeeze the jointing for forming Inward deflection and being mutually fixedly connected through press fitting.
2. a kind of pressure pipeline connection structure as described in claim 1, it is characterised in that：It is described in the jointing
The tube wall of sleeve body (41) has the outer crimp section to its axis offset formed through being pressed crimp, described to lead
The tube wall of pipe (1) has corresponding with the outer crimp section and abuts that position-limited hoop fastens the interior extruding change of connection
Shape section.
3. a kind of pressure pipeline connection structure as claimed in claim 2, it is characterised in that：The outer crimp section and institute
The radial cross-section for stating interior crimp section is regular polygon.
4. a kind of pressure pipeline connection structure as claimed in claim 3, it is characterised in that：The outer crimp section and institute
It states interior crimp section and all has indent indented area (44) to respective axis offset, the indent indented area (44) has more
It is a and be evenly arranged in the along the circumferential direction relatively described regular polygon, and on each face of the regular polygon in axial direction
Have two or three.
5. a kind of pressure pipeline connection structure as claimed in claim 4, it is characterised in that：The indent indented area (44) is length
Rectangular, the axial width of the indent indented area (44) is 2 to 5 millimeters and mutually axially interval width is 3 to 6 millimeters, described
Regular polygon is square or regular hexagon.
6. a kind of pressure pipeline connection structure as described in claim 1, it is characterised in that：It wraps the inside of the fittings body (2)
It includes：Internal pipeline, the matched connecting hole in outer surface (22) with the conduit (1), and the end appearance of the fittings body (2)
Face has the external screw thread area being mutually threadedly coupled with the cap nut (3).
7. a kind of pressure pipeline connection structure as claimed in claim 6, it is characterised in that：
Between the connecting hole (22) and the outer end face (21), the inside of the fittings body (2) also has to be arranged along axis
Seal chamber (23)；And
The O-ring (5) for being arranged in the conduit (1) end periphery is located in the seal chamber (23).
8. a kind of pressure pipeline connection structure as claimed in claim 7, it is characterised in that：Outside in the O-ring (5),
It is also axial arranged in the seal chamber (23) to have a baffle ring (6), the both sides of the baffle ring (6) bottom with the flange sections (42) respectively
The limit that leans of side and the O-ring (5) is engaged the both sides bottom with the flange sections (42) respectively of the baffle ring (6)
The limit that leans of side and the O-ring (5) is engaged.
9. a kind of pressure pipeline connection structure as described in claim 1, it is characterised in that：The other end of the fittings body (2)
Portion, which is fixedly connected with, becomes diametered duct (8) or conduit component.
10. a kind of pressure pipeline connection structure as described in claim 1, it is characterised in that：The conduit (1) is with uniform
Wall thickness and diameter cylindrical tube, described sleeve pipe ontology (41) is the cylindrical tube with uniform wall thickness and diameter, and described is connect
The external screw thread area of head body (2) is isodiametric cylindrical surface, and the caliber of the conduit (1) is less than or equal to 2 inches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721872027.5U CN207729080U (en) | 2017-12-28 | 2017-12-28 | A kind of pressure pipeline connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721872027.5U CN207729080U (en) | 2017-12-28 | 2017-12-28 | A kind of pressure pipeline connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207729080U true CN207729080U (en) | 2018-08-14 |
Family
ID=63086722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721872027.5U Active CN207729080U (en) | 2017-12-28 | 2017-12-28 | A kind of pressure pipeline connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207729080U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109363755A (en) * | 2018-11-27 | 2019-02-22 | 张钰 | A kind of multifunctional double-headed forcing screw |
| CN109973727A (en) * | 2017-12-28 | 2019-07-05 | 上海瀚氢动力科技有限公司 | A kind of pressure pipeline connection structure |
-
2017
- 2017-12-28 CN CN201721872027.5U patent/CN207729080U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973727A (en) * | 2017-12-28 | 2019-07-05 | 上海瀚氢动力科技有限公司 | A kind of pressure pipeline connection structure |
| CN109363755A (en) * | 2018-11-27 | 2019-02-22 | 张钰 | A kind of multifunctional double-headed forcing screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6055863B2 (en) | PRESSING JOE, MANUFACTURING METHOD OF NON-SEPARABLE FITTING, CONNECTOR, AND SYSTEM COMPRISING PRESSING JOE AND CONNECTOR | |
| KR101181731B1 (en) | Tube connecter with connecting protrusion | |
| CN207729080U (en) | A kind of pressure pipeline connection structure | |
| CN208074342U (en) | It is a kind of to carry splicing type flange of the positioning to aperture apparatus | |
| CN203585616U (en) | Son and mother sealing ring for connecting smooth metal pipes | |
| WO2014180179A1 (en) | Connecting pipe fitting for pipeline | |
| CN109973727A (en) | A kind of pressure pipeline connection structure | |
| KR102038188B1 (en) | Device for coaxially connecting two pipelines, and an arrangement for disconnecting same | |
| CN207729087U (en) | A kind of pressure pipeline fastening means | |
| JP2021152415A (en) | Assembly of flexible tube and fitting body, and method thereof | |
| CN207584216U (en) | A kind of ferrule-type compression joint with inner card cage | |
| CN109973726A (en) | A kind of pressure pipeline connection method | |
| CN107893887A (en) | A kind of expansion type joint of flexible pipe | |
| CN204141117U (en) | Fuel gas transmission stainless steel corrugated flexible hose leads directly to pipe fitting | |
| CN103097795B (en) | Sanitary clamp coupler with radial seal | |
| CN207455001U (en) | A kind of extrusion type joint of hose | |
| CN208365000U (en) | Pipe sealing structure and the vehicle for using the structure | |
| CN107725938B (en) | A kind of rack-and-pinion connector of hose | |
| CN206929475U (en) | The high bearing pipe of CO2 system high efficiencies | |
| KR101165203B1 (en) | Tube connecter | |
| CN102401195A (en) | Stainless steel reducing pipe and machining method thereof | |
| CN216520083U (en) | High-pressure joint | |
| CN215371454U (en) | Screwed joint and pipeline connecting structure | |
| CN203010089U (en) | Water dividing and collecting device | |
| CN103104769A (en) | Stainless steel anti-explosion flexible pipe free of welding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |