CN110159846B - Pipeline connecting joint - Google Patents
Pipeline connecting joint Download PDFInfo
- Publication number
- CN110159846B CN110159846B CN201910471906.4A CN201910471906A CN110159846B CN 110159846 B CN110159846 B CN 110159846B CN 201910471906 A CN201910471906 A CN 201910471906A CN 110159846 B CN110159846 B CN 110159846B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- section
- diameter
- strip
- screw
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims 4
- 238000003780 insertion Methods 0.000 claims 4
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 238000009434 installation Methods 0.000 abstract description 22
- 238000005457 optimization Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member
-
- 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
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
- F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
- F16L19/0283—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall and having a bell-mouthed shape
Abstract
The invention discloses a pipeline connecting joint, which comprises a connecting sleeve formed by folding two half sleeve bodies, wherein connecting threads are respectively arranged at the inner holes of the connecting sleeve and at the positions of the two ends of the connecting sleeve, mounting sleeves are respectively arranged at the two ends of the connecting sleeve, mounting threads extend from the outer surface of the mounting sleeve, the mounting sleeve consists of a straight line section and a reducing section which are coaxially arranged, the straight line section is fixed on the connecting sleeve through the matching sleeve of the mounting threads and the connecting threads, a locking nut is sleeved on the straight line section, a plurality of strip-shaped openings extend on the reducing section around the connecting section, elastic rubber strips are arranged at the strip-shaped openings and are bonded and in sealing fit with the strip-shaped openings, when the locking nut is rotationally moved towards the large-diameter end direction of the reducing section, the locking nut can clamp a pipeline to be connected, and the reducing section can enable the elastic rubber strips to elastically deform and abut against the pipeline to be connected. The invention has simple structure, rapid and convenient installation and improves the connection tightness between two pipelines.
Description
Technical Field
The invention relates to a connecting device, in particular to a pipeline connecting joint.
Background
The movable joint is used as a connecting pipe fitting, is a common pipeline connecting piece which can be conveniently assembled and disassembled, and is widely applied to pipeline connection of a plurality of industries such as water supply pipelines, gas transmission pipelines and the like. The movable joint generally comprises three parts, namely a nut, a cloud head and a butt joint, wherein the cloud head and the butt joint are used for connecting two sections of pipelines in the pipeline, the middle nut is used for connecting the cloud head and the butt joint, connection and disassembly of the two sections of pipelines are facilitated, and installation and overhaul are facilitated. However, the distance between the two connected pipelines is required, and if the distance between the two pipelines is too large, the sleeve nut cannot be screwed tightly, so that the sealing is poor; if the distance between the two sections of pipeline is too small, the pipeline can bend, and the pipeline is not applicable to the position with limited pipeline installation space.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: how to provide a quick and convenient installation, the effectual pipeline joint of sealed.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a pipeline connecting joint, include the adapter sleeve that is formed by two half sleeve body foldings, pass through screw rod fixed connection between the two half sleeve body, the hole diameter of adapter sleeve is greater than the external diameter of treating the connecting pipeline, the hole of adapter sleeve just is located the position at its both ends and is provided with the connecting thread respectively, the both ends along the centre line direction of adapter sleeve are provided with the installation cover respectively, the internal diameter of installation cover and the external diameter clearance fit of treating the connecting pipeline, the surface of installation cover is along the centre line direction by its one end extension have the installation screw thread to the other end, the installation cover comprises straightway and the reducing section of coaxial setting, the external diameter of reducing section is kept away from straightway direction along the centre line direction and is increased gradually, the one end that the straightway was kept away from the reducing section is through the connecting screw thread cooperation of installation screw thread and its place one side so that the installation cover is fixed on the adapter sleeve, the straight line section is also sleeved with a lock nut which is in threaded connection with the straight line section so as to be capable of rotating along the central line direction of the connecting sleeve, a plurality of strip-shaped openings extending from one end to the other end of the variable-diameter section along the length direction of the variable-diameter section are uniformly arranged at intervals around the central line, an elastic rubber strip extending from one end to the other end of the strip-shaped opening along the length direction of the strip-shaped opening is arranged at the strip-shaped opening, the elastic rubber strip is bonded with the strip-shaped opening and is in sealing fit with the strip-shaped opening, when the lock nut rotates towards the large-diameter end direction of the variable-diameter section, the lock nut can extrude the variable-diameter section so that the variable-diameter section clamps a pipeline to be connected, and the variable-diameter section can extrude the elastic rubber strip positioned at the strip-shaped opening so that the elastic rubber strip is elastically deformed to be abutted to the pipeline to be connected.
In the invention, when the two mounting sleeves are used, the two mounting sleeves are sleeved on two pipelines to be connected respectively, the straight line sections in the two mounting sleeves are opposite, then the locking nuts are sleeved on the pipelines and are in threaded connection with the straight line sections, then the two half sleeve bodies are folded and fixed at positions corresponding to the two pipelines to form the connecting sleeve, one ends of the two opposite pipelines are respectively positioned in the inner holes of the connecting sleeve, then the mounting sleeves at the two ends of the connecting sleeve are connected with the connecting threads of the connecting sleeve through the mounting threads on the straight line sections, the mounting sleeves are fixed on the connecting sleeve, then the two locking nuts are respectively rotated to enable the two locking nuts to move towards the direction of the diameter-changing section, when the two locking nuts move, the inner holes of the locking nuts squeeze the diameter-changing section, so that the pipeline is clamped by the diameter-changing section, the clamping degree is stronger, and simultaneously when the diameter-changing section clamps the pipeline, the elastic rubber strip positioned at the strip opening is squeezed, the elastic rubber strip is elastically deformed towards the direction of the pipeline to be abutted against the pipeline, and the sealing property between the clamping degree of the diameter-changing section and the pipeline is stronger. Therefore, the two pipelines are connected together, the connecting and sealing effect between the two pipelines is good, and the installation is rapid and convenient.
As optimization, a circle of baffle ring is formed around the central line of the connecting sleeve in the inner hole of the connecting sleeve and close to the two ends of the connecting sleeve respectively, the inner diameter of the baffle ring is consistent with that of the mounting sleeve, the connecting screw thread extends to the position of the baffle ring from the sleeve opening of the connecting sleeve along the central line direction of the connecting sleeve, and one end part of the straight line section far away from the reducing section is abutted on the baffle ring.
As optimization, an annular rubber sealing gasket which is concentric with the baffle ring is arranged at the position between the baffle ring and the straight line section, and the inner diameter and the outer diameter of the annular rubber sealing gasket are respectively consistent with the inner diameter and the outer diameter of the baffle ring.
As optimization, a plurality of fixed blocks are fixedly connected to the peripheral surface of the lock nut at equal intervals along the circumferential direction of the lock nut, an adjusting screw hole is formed in the fixed blocks along the direction parallel to the central line of the lock nut, a tightening screw is connected to the adjusting screw hole in a threaded manner, two ends of the tightening screw extend out of the adjusting screw hole respectively, the projection of the tightening screw along the central line of the lock nut is located in the projection of the connecting sleeve along the central line of the lock nut, a screwing part which is coaxially arranged with the tightening screw is formed at one end of the tightening screw and is far away from the connecting sleeve in a protruding manner, and the screwing part is provided with at least two screwing surfaces which are parallel to each other and are parallel to the central line of the tightening screw so as to facilitate the rotation of the tightening screw.
As the optimization, just be located on lock nut's the global just be close to in lock nut center wire loop is equipped with round spacing recess, is provided with in the spacing recess rather than the concentric line and rather than normal running fit's swivel ring, the fixed block is fixed on the swivel ring, the adapter sleeve just is located the butt screw rod is followed the ascending projection of lock nut center line direction is around lock nut center line pivoted rotation orbit is concave upward to be equipped with a plurality of spacing jacks, the butt screw rod can insert in spacing jack and can be followed its length direction and rather than sliding fit, the quantity of spacing jack with the quantity of butt screw rod is unanimous, a plurality of spacing jacks wind the even interval setting of adapter sleeve center line direction.
As optimization, the abutting screw rod is coaxially provided with an abutting column formed by outwards protruding towards one end of the connecting sleeve, the outer diameter of the abutting column is consistent with that of the abutting screw rod, and one end of the abutting column, which is far away from the abutting screw rod, is a round head end.
In summary, the beneficial effects of the invention are as follows: the invention has simple structure, rapid and convenient installation and improves the connection tightness between two pipelines.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings, in which:
fig. 1 is a cross-sectional view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a pipeline connecting joint in this embodiment includes the adapter sleeve that is folded by two half-sleeve bodies 1 and forms, through screw rod fixed connection between two half-sleeve bodies 1, the hole diameter of adapter sleeve is greater than the external diameter of treating the connecting pipeline, the hole of adapter sleeve and the position that is located its both ends are provided with connecting screw thread respectively, the both ends along its centerline direction of adapter sleeve are provided with installation cover 2 respectively, the internal diameter of installation cover 2 and the external diameter clearance fit of treating the connecting pipeline, the surface of installation cover 2 is followed centerline direction by its one end and is extended to the installation screw thread of the other end, installation cover 2 comprises coaxial straightway and reducing section, the external diameter of reducing section is kept away from straightway direction along centerline direction and is gradually increased, the one end that the reducing section was kept away from the reducing section is through the connecting screw thread cooperation of installation screw thread and one side of it so that installation cover 2 is fixed on the adapter sleeve, still the cover is equipped with on the straightway in order to be able to follow the lock nut 3 of adapter sleeve direction rotation, the reducing section is last and around evenly spaced and be provided with many and wait that the reducing length direction is by its one end to extend to the external diameter clearance fit of its one end to the other end, the one end is along its one end extension to the axial lead of the strip, the strip-shaped nut is able to be pressed the elastic band-shaped joint 4 and is located the strip-shaped and is able to take place the elastic band-shaped joint 4 and is compressed the elastic band-shaped band joint section and is stretched to be deformed to the end 4 to the end extension to the end is opposite 1.
In this specific embodiment, a circle of baffle ring 5 is formed around the central line of the connecting sleeve in the inner hole of the connecting sleeve and near the two ends of the connecting sleeve respectively, the inner diameter of the baffle ring is consistent with the inner diameter of the mounting sleeve 2, the connecting screw thread extends to the position of the baffle ring 5 from the sleeve opening of the connecting sleeve along the central line direction of the connecting sleeve, and one end part of the straight line section far away from the reducing section is abutted on the baffle ring 5.
In this specific embodiment, an annular rubber gasket concentric with the baffle ring 5 is disposed at a position between the baffle ring 5 and the straight line segment, and an inner diameter and an outer diameter of the annular rubber gasket are respectively consistent with an inner diameter and an outer diameter of the baffle ring 5.
In this embodiment, a plurality of fixed blocks 6 are fixedly connected with the peripheral surface of the lock nut 3 at regular intervals along the circumferential direction, an adjusting screw hole is formed on the fixed blocks 6 along a direction parallel to the central line of the lock nut 3, a tightening screw 7 is connected with the adjusting screw hole in a threaded manner, two ends of the tightening screw 7 respectively extend out of the adjusting screw hole, the projection of the tightening screw 7 along the central line of the lock nut 3 is located in the projection of the connecting sleeve along the central line of the lock nut 3, a screwing part 8 coaxially arranged with the tightening screw 7 is formed on one end of the tightening screw 7, which is far away from the connecting sleeve, the screwing part 8 is provided with at least two screwing surfaces which are parallel to each other and parallel to the central line of the tightening screw 7, so that the tightening screw 7 can be conveniently rotated, and when the lock nut 3 clamps a pipeline to be connected by the variable diameter section, the tightening screw 7 is abutted against one end of the connecting sleeve.
In this concrete implementation manner, on the global and lie in it is close to the one end of lock nut 3 around lock nut 3 center line loop is equipped with round spacing recess, be provided with in the spacing recess rather than the concentric line and rather than normal running fit's swivel ring 9, fixed block 6 is fixed on swivel ring 9, the adapter sleeve just lies in the projection on lock nut 3 center line orientation is followed lock nut 3 center line pivoted rotation orbit is upwards concavely equipped with a plurality of spacing jacks 10, the tight screw 7 of butt can insert in spacing jack 10 and can follow its length direction and its sliding fit, the quantity of spacing jack 10 with the quantity of butt screw 7 is unanimous, a plurality of spacing jacks 10 are around the even interval setting of adapter sleeve center line orientation.
In this embodiment, the abutting screw 7 is coaxially provided with an abutting column formed by protruding outwards towards one end of the connecting sleeve, the outer diameter of the abutting column is consistent with the outer diameter of the abutting screw 7, and one end of the abutting column away from the abutting screw 7 is a round head end.
In the concrete implementation process, the screwing part is far away from on the one end terminal surface of supporting the tight screw rod along support tightly screw rod central line direction concave be equipped with the installation screw, it is provided with whole crisscross rotation handle to screw the one end of propping tightly screw rod to screw the part of turning, rotates the central point of handle and puts and wears to be equipped with a mounting screw along perpendicular to rotation handle place plane direction, rotates the handle and passes through mounting screw threaded connection in the installation screw so that rotate the handle and fix screw the screwing part is last, except use the instrument to rotate on screwing the part to prop tightly the screw rod, can also be used the hand to rotate the operation to rotating the handle.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be understood that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A pipe connection joint, characterized in that: comprises a connecting sleeve formed by folding two half sleeve bodies, wherein the two half sleeve bodies are fixedly connected through a screw rod, the diameter of an inner hole of the connecting sleeve is larger than the outer diameter of a pipeline to be connected, connecting threads are respectively arranged at the positions of the inner hole of the connecting sleeve and at the two ends of the connecting sleeve, mounting sleeves are respectively arranged at the two ends of the connecting sleeve along the central line direction, the inner diameter of each mounting sleeve is in clearance fit with the outer diameter of the pipeline to be connected, the outer surface of each mounting sleeve extends from one end to the other end along the central line direction, each mounting sleeve consists of a straight line section and a variable diameter section which are coaxially arranged, the outer diameter of the variable diameter section is gradually increased along the central line direction towards the direction away from the straight line section, one end of the straight line section away from the variable diameter section is matched with the connecting threads at one side of the straight line section through the mounting threads so that the mounting sleeve is fixed on the connecting sleeve, the straight line section is also sleeved with a lock nut which is in threaded connection with the straight line section so as to be capable of rotating along the central line direction of the connecting sleeve, a plurality of strip-shaped openings extending from one end to the other end of the variable-diameter section along the length direction of the variable-diameter section are uniformly arranged on the variable-diameter section at intervals around the central line, an elastic rubber strip extending from one end to the other end of the strip-shaped opening along the length direction of the strip-shaped opening is arranged at the strip-shaped opening, the elastic rubber strip is bonded with the strip-shaped opening and is in sealing fit with the strip-shaped opening, when the lock nut rotates towards the large-diameter end direction of the variable-diameter section, the lock nut can extrude the variable-diameter section so as to clamp a pipeline to be connected, and the variable-diameter section can extrude the elastic rubber strip positioned at the strip-shaped opening so as to be elastically deformed and abutted on the pipeline to be connected;
a circle of baffle rings are formed in the inner holes of the connecting sleeves in a protruding mode around the central line of the connecting sleeves at positions close to two ends of the inner holes, the inner diameter of each baffle ring is identical to the inner diameter of the mounting sleeve, the connecting threads extend to the positions of the baffle rings from the sleeve openings of the connecting sleeves along the central line direction of the connecting sleeves, and one end part of each straight line section far away from the reducing section is abutted to each baffle ring;
the circumference of lock nut is evenly spaced fixedly connected with a plurality of fixed blocks along its circumference, and adjusting screw has been seted up along being on the fixed block in parallel with lock nut central line direction, adjusting screw department threaded connection has to support tight screw, supports tight screw's both ends and stretches out respectively in adjusting screw, supports tight screw along lock nut central line direction on the projection of direction be located the adapter sleeve is followed in the projection of lock nut central line direction, supports tight screw and keeps away from the protruding portion that turns up that is formed with rather than coaxial setting of one end of adapter sleeve, turns up the portion and has at least two and is parallel to each other and with support tight screw central line and be used for making the rotatory face of turning up of tight screw, works as lock nut is with make the reducing section is to be tightly when treating the connecting tube, support tight screw and towards one end butt of adapter sleeve is in on the adapter sleeve.
2. A pipe coupling according to claim 1, wherein: an annular rubber sealing gasket which is concentric with the baffle ring is arranged at the position between the baffle ring and the straight line section, and the inner diameter and the outer diameter of the annular sealing rubber gasket are respectively consistent with those of the baffle ring.
3. A pipe coupling according to claim 1, wherein: the locking nut is characterized in that a circle of limiting grooves are formed in the peripheral surface of the locking nut and located at one end, close to the connecting sleeve, of the locking nut, a rotating ring which is in coaxial line and in running fit with the locking nut is arranged in each limiting groove, the fixing block is fixed on the rotating ring, a plurality of limiting insertion holes are formed in the connecting sleeve and located in the position, on the center line direction of the locking nut, of the projection, on the center line direction of the locking nut, of the abutting screw in a concave mode, the abutting screw can be inserted into the limiting insertion holes and in the length direction of the abutting screw in a sliding fit mode, the number of the limiting insertion holes is identical to that of the abutting screw, and the limiting insertion holes are evenly arranged at intervals along the center line direction of the connecting sleeve.
4. A pipe coupling according to claim 1, wherein: the butt column formed by outwards protruding is coaxially arranged at one end of the butt screw rod, which faces to the connecting sleeve, the outer diameter of the butt column is consistent with that of the butt screw rod, and one end of the butt column, which is far away from the butt screw rod, is a round head end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471906.4A CN110159846B (en) | 2019-05-31 | 2019-05-31 | Pipeline connecting joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471906.4A CN110159846B (en) | 2019-05-31 | 2019-05-31 | Pipeline connecting joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110159846A CN110159846A (en) | 2019-08-23 |
| CN110159846B true CN110159846B (en) | 2023-12-19 |
Family
ID=67630500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910471906.4A Active CN110159846B (en) | 2019-05-31 | 2019-05-31 | Pipeline connecting joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110159846B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622656B (en) * | 2021-08-31 | 2023-09-08 | 中国第十八冶金建设有限公司 | Pipeline hangs hole shutoff template strutting arrangement |
| CN113622657B (en) * | 2021-08-31 | 2023-09-08 | 中国第十八冶金建设有限公司 | Plugging construction method for pipeline hanging hole |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201074712Y (en) * | 2007-09-14 | 2008-06-18 | 张雪峰 | Leak-proof quick joint for pipe |
| CN107101035A (en) * | 2017-05-10 | 2017-08-29 | 盐城威乐阀门制造有限公司 | A kind of pretightening sealing ball valve device |
| CN206943623U (en) * | 2017-06-12 | 2018-01-30 | 浙江肯优流体输送技术有限公司 | A kind of large diameter pipe connector |
| CN207599190U (en) * | 2017-12-19 | 2018-07-10 | 中建七局第一建筑有限公司 | A kind of drainage pipeline antiseep connector |
| CN108571612A (en) * | 2018-06-22 | 2018-09-25 | 中国华能集团清洁能源技术研究院有限公司 | A kind of device of quick connection water pipe |
| CN209943729U (en) * | 2019-05-31 | 2020-01-14 | 中冶建工集团有限公司 | Pipeline connecting joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202005003812U1 (en) * | 2005-03-07 | 2006-07-20 | BÖHL, Harald | Clamping sleeve and clamp connection |
-
2019
- 2019-05-31 CN CN201910471906.4A patent/CN110159846B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201074712Y (en) * | 2007-09-14 | 2008-06-18 | 张雪峰 | Leak-proof quick joint for pipe |
| CN107101035A (en) * | 2017-05-10 | 2017-08-29 | 盐城威乐阀门制造有限公司 | A kind of pretightening sealing ball valve device |
| CN206943623U (en) * | 2017-06-12 | 2018-01-30 | 浙江肯优流体输送技术有限公司 | A kind of large diameter pipe connector |
| CN207599190U (en) * | 2017-12-19 | 2018-07-10 | 中建七局第一建筑有限公司 | A kind of drainage pipeline antiseep connector |
| CN108571612A (en) * | 2018-06-22 | 2018-09-25 | 中国华能集团清洁能源技术研究院有限公司 | A kind of device of quick connection water pipe |
| CN209943729U (en) * | 2019-05-31 | 2020-01-14 | 中冶建工集团有限公司 | Pipeline connecting joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110159846A (en) | 2019-08-23 |
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| PB01 | Publication | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200710 Address after: No.8, Yejin Road, Shipingqiao, Jiulongpo District, Chongqing Applicant after: China 18th Metallurgical Construction Co.,Ltd. Address before: No. 1 West Road 400084 Dadukou District of Chongqing Applicant before: CHINA METALLURGICAL CONSTRUCTION ENGINEERING GROUP Co.,Ltd. |
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