CN111156358A - Pipeline installation connecting flange - Google Patents
Pipeline installation connecting flange Download PDFInfo
- Publication number
- CN111156358A CN111156358A CN202010139291.8A CN202010139291A CN111156358A CN 111156358 A CN111156358 A CN 111156358A CN 202010139291 A CN202010139291 A CN 202010139291A CN 111156358 A CN111156358 A CN 111156358A
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- Prior art keywords
- clamping
- sleeve
- ring
- limiting
- wall
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- 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.)
- Granted
Links
- 238000009434 installation Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 8
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 7
- 238000010168 coupling process Methods 0.000 claims 7
- 238000005859 coupling reaction Methods 0.000 claims 7
- 241000826860 Trapezium Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Classifications
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- 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
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- 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
- F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides a pipeline installation connecting flange which comprises a base, a clamping frame and a fixed flange, wherein the clamping frame is arranged on the base; the upper end of the base is uniformly provided with a clamping frame, and a fixing flange is fixedly arranged in the clamping frame through bolts; the flange can solve the problems that the existing flange is mainly influenced by the air pressure inside the pipeline when the pipeline is connected by the flange on the market, so that the air tightness of the flange is reduced along with the prolonging of time when the two pipelines are connected for use, and the danger is caused when the pipeline is seriously leaked in the use process; b, connecting the pipeline and the flange in the market by adopting bolts, wherein the bolts can cause rusting and slippery threads when the pipeline and the flange are used for a long time and need to be replaced and maintained, and the use experience is seriously influenced; and the fixing effect of the bolt connection fixing mode is poor.
Description
Technical Field
The invention relates to the technical field of connecting pieces, in particular to a pipeline installation connecting flange.
Background
A flange, also known as a flange collar or flange. The flange is a part for connecting the shaft and the shaft or the pipeline and is used for connecting pipe ends; the flange connection is an important connection mode for pipeline construction. The flange connection is convenient to use and can bear larger pressure; and the installation mode is simple.
However, the existing flange mainly has the following problems in the process of connecting pipelines; a, when the pipelines are connected by adopting a flange on the market, the air tightness of the pipelines is reduced along with the prolonging of time when the two pipelines are connected for use due to the influence of the air pressure in the pipelines, and the danger is caused when the pipelines are seriously leaked in the using process; b, connecting the pipeline and the flange in the market by adopting bolts, wherein the bolts can cause rusting and slippery threads when the pipeline and the flange are used for a long time and need to be replaced and maintained, and the use experience is seriously influenced; and the bolt connection fixing mode has poor fixing effect.
The invention provides a pipeline mounting connecting flange.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme that the pipeline installation connecting flange comprises a base, a clamping frame and a fixed flange; the upper end of the base is uniformly provided with a clamping frame, and a fixing flange is fixedly arranged in the clamping frame through bolts; wherein:
the fixing flange comprises a sleeve, an outer clamping unit, a port fixing unit, an isolation rubber ring, a limiting unit and a clamping unit; the telescopic both ends outer wall evenly is provided with outer buckle unit along its circumferencial direction, and the telescopic both ends pass through outer buckle unit and pass through joint mode fixed mounting there is the port fixed unit, telescopic middle part inner wall is provided with the insulating rubber ring, and telescopic inside evenly is provided with spacing unit along its circumferencial direction and bilateral symmetry, the joint unit pass through the sliding fit mode and install on spacing unit.
The port fixing unit comprises an oblique angle clamping ring, an external fixing clamping sleeve, a limiting column, a pressure spring and a clamping backing ring; the oblique angle clamping rings are respectively arranged on the outer walls of the two ends of the sleeve, the cross section of the external fixing clamping sleeve is of an L-shaped structure, and the external fixing clamping sleeve is fixed at the two ends of the sleeve through the external clamping units; the inner wall of the external fixing clamping sleeve is provided with a clamping backing ring along the circumferential direction in a sliding fit mode, the clamping backing ring is limited by a limiting column uniformly arranged in the external fixing clamping sleeve, and the outer wall at the lower end of the limiting column is sleeved with a pressure spring; the clamping cushion ring is matched with the outer wall of the pipeline in a pressing fit manner through the matching of the oblique angle clamping ring and the clamping cushion ring, so that the outer wall of the pipeline is further fixed, and the pipeline is prevented from loosening; the connection strength between the pipeline and the invention is fully ensured.
The outer clamping unit comprises a clamping spring and a clamping raised head; the clamping convex heads are uniformly arranged on the outer wall of the sleeve in a sliding fit mode, and clamping springs are arranged on the outer wall of the sleeve where the clamping convex heads are installed and are abutted against the clamping convex heads; the port fixing unit is fixed through the arranged outer buckling unit.
The limiting unit comprises a plurality of limiting sleeve columns, limiting springs and limiting rings, and the limiting rings are arranged on the inner wall of the outer end of the sleeve in a clamping manner; one end of each of the plurality of limiting sleeve columns is connected to the limiting ring, the other end of each of the plurality of limiting sleeve columns is connected to the outer wall of the isolation rubber ring, and limiting springs are sleeved on the outer walls of the plurality of limiting sleeve columns; the clamping unit is limited by the limiting unit, dislocation rotation of the clamping unit in the process of fixing the two pipelines is prevented, and the connecting effect between the two pipelines is fully guaranteed.
The clamping unit comprises a clamping sleeve and a rubber backing ring; the clamping sleeve and the rubber backing ring are arranged on the plurality of limiting sleeve columns in a sliding fit mode, and the clamping sleeve is positioned on the outer side of the rubber sleeve ring; the arranged clamping unit is convenient for fixedly connecting and sealing the ports of the two pipelines; the connecting function of the pipeline is fully ensured.
The clamping frame comprises an upper clamping ring and a lower clamping ring, the lower clamping ring and the upper clamping ring are both of semi-arc structures, and the upper end of the lower clamping ring is provided with the upper clamping ring through a bolt; the fixing flange is fixed by bolts through the upper clamping ring and the lower clamping ring, so that the stability of a pipeline fixed on the fixing flange is ensured; the pipeline leakage sealing performance reduction caused by shaking at the joint of the pipeline and the fixed flange is prevented.
Preferably; the limiting unit at the left end inside the sleeve is recessed inwards and the limiting unit at the right end inside the sleeve is protruded outwards to be further matched with each other; the limiting unit at the left end inside the sleeve and the limiting unit at the right end inside the sleeve are arranged to be matched with each other, the sealing performance of the pipeline connection is further promoted, and the pipeline is fully guaranteed not to leak after being connected.
Preferably; the outer part of the oblique angle clamping ring is of a trapezoidal structure, and balls are uniformly arranged on the outer wall of the oblique angle clamping ring in a sliding fit mode; the outer part of the bevel clamping ring is arranged to be of a trapezoidal structure, and balls are uniformly arranged on the outer part of the bevel clamping ring in a sliding fit mode, so that the direct fit degree of the bevel clamping ring and the clamping backing ring is improved, and the fixing effect on the outer wall of the pipeline is further promoted; the tightness of the connected pipelines is fully ensured.
Preferably; rubber balls are uniformly arranged on the inner wall of the clamping sleeve along the circumferential direction in a rolling matching manner; the outer wall of the rubber backing ring is provided with an annular groove, and balls are uniformly arranged in the annular groove in a rolling mode; rubber balls are uniformly arranged on the inner wall of the clamping sleeve along the circumferential direction of the clamping sleeve in a rolling fit mode, so that the fixing effect between the clamping sleeve and an externally connected pipeline is improved, and the sealing property of the connected pipeline is improved by the extrusion generated between the deformation of the rubber balls and the outer wall of the pipeline; the connection strength between the rubber backing ring and the pipeline port is improved by arranging the ball inside the annular groove on the rubber backing ring.
Advantageous effects
The inclined angle clamping ring is matched with the clamping backing ring, so that the clamping backing ring is in tight fit with the outer wall of the pipeline, the outer wall of the pipeline is further fixed, and the pipeline is prevented from loosening; the connection strength between the pipeline and the invention is fully ensured;
the clamping unit is limited by the limiting unit, so that the clamping unit is prevented from rotating in a staggered manner in the process of fixing two pipelines, and the connecting effect between the two pipelines is fully ensured;
and thirdly, the limiting unit at the left end in the sleeve and the limiting unit at the right end in the sleeve are arranged to be of concave-convex structures which are matched with each other, so that the sealing property of the pipeline connection is further promoted, and the pipeline is fully ensured not to leak after being connected.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a side view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view of the invention as shown in FIG. 1;
fig. 4 is a partial enlarged view of the invention at a in fig. 3.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.
The following terms are defined based on the functions of the present invention, and may be different depending on the intention of the user or the operator or the convention. Therefore, these terms are defined based on the entire contents of the present specification.
As shown in fig. 1 to 4, a pipe installation connection flange comprises a base 1, a clamping frame 2 and a fixing flange 3; the upper end of the base 1 is uniformly provided with a clamping frame 2, and a fixed flange 3 is fixedly arranged in the clamping frame 2 through bolts; wherein:
the clamping frame 2 comprises an upper clamping ring 21 and a lower clamping ring 22, the lower clamping ring 22 and the upper clamping ring 21 are both of a semi-arc structure, and the upper end of the lower clamping ring 22 is provided with the upper clamping ring 21 through a bolt; the fixing flange 3 is fixed by bolts through an upper clamping ring 21 and a lower clamping ring 22, so that the stability of the pipeline fixed on the fixing flange 3 is ensured; prevent that pipeline and 3 knecks of mounting flange from taking place to rock the pipeline that causes and leaking the leakproofness and reducing.
The fixing flange 3 comprises a sleeve 31, an outer buckling unit 32, a port fixing unit 33, an isolation rubber ring 34, a limiting unit 35 and a buckling unit 36; the outer walls of the two ends of the sleeve 31 are uniformly provided with outer clamping units 32 along the circumferential direction, the two ends of the sleeve 31 are fixedly provided with port fixing units 33 through the outer clamping units 32 in a clamping manner, the inner wall of the middle part of the sleeve 31 is provided with an isolation rubber ring 34, the inner part of the sleeve 31 is uniformly provided with limiting units 35 along the circumferential direction and in bilateral symmetry, and the clamping units 36 are arranged on the limiting units 35 in a sliding fit manner; the limiting unit 35 at the left end inside the sleeve 31 is recessed inwards and the limiting unit 35 at the right end inside the sleeve 31 is protruded outwards to further match with each other; the limiting unit 35 at the left end inside the sleeve 31 and the limiting unit 35 at the right end inside the sleeve 31 are arranged to be matched with each other, the sealing performance of the pipeline connection is further promoted, and the pipeline is fully guaranteed not to leak after being connected.
The outer snap unit 32 comprises a snap spring 321 and a snap projection 322; the clamping raised heads 322 are uniformly arranged on the outer wall of the sleeve 31 in a sliding fit mode, and clamping springs 321 arranged on the outer wall of the sleeve 31 where the clamping raised heads 322 are arranged are abutted to the clamping raised heads 322; the port fixing unit 33 is fixed by the provided external snap unit 32.
The port fixing unit 33 comprises an oblique angle clamping ring 331, an external fixing clamping sleeve 332, a limiting column 333, a pressure spring 334 and a clamping backing ring 335; the bevel clamping rings 331 are respectively arranged on the outer walls of the two ends of the sleeve 31, the outer portions of the bevel clamping rings 331 are of a trapezoidal structure, and balls are uniformly arranged on the outer walls of the bevel clamping rings 331 in a sliding fit mode; the outer part of the oblique angle clamping ring 331 is of a trapezoidal structure, and balls are uniformly arranged on the outer part of the oblique angle clamping ring 331 in a sliding fit mode, so that the direct fit degree of the oblique angle clamping ring 331 and the clamping backing ring 335 is improved, and the fixing effect on the outer wall of the pipeline is further promoted; the sealing performance of the connected pipelines is fully ensured; the section of the external fixing clamping sleeve 332 is of an L-shaped structure, and the external fixing clamping sleeve 332 is fixed at two ends of the sleeve 31 through the external clamping unit 32; the inner wall of the outer fixing clamping sleeve 332 is provided with a clamping backing ring 335 along the circumferential direction in a sliding fit manner, the clamping backing ring 335 is limited by a limiting column 333 uniformly arranged in the outer fixing clamping sleeve 332, and the outer wall at the lower end of the limiting column 333 is sleeved with a pressure spring 334; the bevel clamping ring 331 is matched with the clamping backing ring 335, so that the clamping backing ring 335 is in tight fit with the outer wall of the pipeline, and the outer wall of the pipeline is further fixed to prevent the pipeline from loosening; the connection strength between the pipeline and the invention is fully ensured.
The limiting unit 35 comprises a plurality of limiting sleeve columns 351, a limiting spring 352 and a limiting ring 353, and the limiting ring 353 is arranged on the inner wall of the outer end of the sleeve 31 in a clamping manner; one end of each of the plurality of limiting sleeve columns 351 is connected to the limiting ring 353, the other end of each of the plurality of limiting sleeve columns 351 is connected to the outer wall of the isolation rubber ring 34, and a limiting spring 352 is sleeved on the outer wall of each of the plurality of limiting sleeve columns 351; spacing unit 35 through setting up carries on spacingly to joint unit 36, prevents that joint unit 36 from taking place the dislocation rotation at the in-process of fixed two pipelines, fully guarantees the connection effect between two pipelines.
The clamping unit 36 comprises a clamping sleeve 361 and a rubber backing ring 362; the clamping sleeve 361 and the rubber backing ring 362 are arranged on the limiting sleeve columns 351 in a sliding fit mode, and the clamping sleeve 361 is located on the outer side of the rubber collar; rubber balls are uniformly arranged on the inner wall of the clamping sleeve 361 along the circumferential direction in a rolling matching mode; the outer wall of the rubber backing ring 362 is provided with an annular groove, and balls are uniformly arranged in the annular groove in a rolling mode; rubber balls are uniformly arranged on the inner wall of the clamping sleeve 361 along the circumferential direction of the clamping sleeve 361 in a rolling fit mode, so that the fixing effect between the clamping sleeve 361 and an externally connected pipeline is improved, and the sealing property of the connected pipeline is improved by the extrusion generated between the deformation of the rubber balls and the outer wall of the pipeline; the strength of the connection to the pipe port is improved by providing a ball inside an annular groove on the rubber grommet 362.
Particularly when the invention is used for connecting two pipelines;
firstly, the outer fixing clamp sleeves 332 on the two sides respectively penetrate through the outer walls of the pipelines at the two ends; then, the port of the pipeline is manually sent into the sleeve 31, and when the rubber backing rings 362 on the two sides are matched with each other, the pipeline is fixed by matching the external fixing clamping sleeve 332 with the external clamping unit 32; and finally, fixing the fixing flange 3 which is connected with the pipeline and is fixed with the base 1 through the clamping frame 2.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A pipeline installation connecting flange comprises a base (1), a clamping frame (2) and a fixed flange (3); the method is characterized in that: the upper end of the base (1) is uniformly provided with a clamping frame (2), and a fixed flange (3) is fixedly arranged in the clamping frame (2) through bolts; wherein:
the fixing flange (3) comprises a sleeve (31), an outer clamping unit (32), a port fixing unit (33), an isolation rubber ring (34), a limiting unit (35) and a clamping unit (36); the outer walls of the two ends of the sleeve (31) are uniformly provided with outer buckling units (32) along the circumferential direction, the two ends of the sleeve (31) are fixedly provided with port fixing units (33) through the outer buckling units (32) in a clamping mode, the inner wall of the middle part of the sleeve (31) is provided with an isolation rubber ring (34), the inside of the sleeve (31) is uniformly provided with limiting units (35) along the circumferential direction and in bilateral symmetry, and the clamping units (36) are arranged on the limiting units (35) in a sliding fit mode;
the port fixing unit (33) comprises an oblique angle clamping ring (331), an external fixing clamping sleeve (332), a limiting column (333), a pressure spring (334) and a clamping backing ring (335); the bevel clamping rings (331) are respectively arranged on the outer walls of the two ends of the sleeve (31), the section of the outer fixing clamping sleeve (332) is of an L-shaped structure, and the outer fixing clamping sleeve (332) is fixed at the two ends of the sleeve (31) through the outer clamping unit (32); the inner wall of external fixation cutting ferrule (332) is provided with chucking backing ring (335) through sliding fit mode along its circumferencial direction, chucking backing ring (335) spacing through evenly setting up spacing post (333) of external fixation cutting ferrule (332) inside, and the outer wall cover that is located spacing post (333) lower extreme is equipped with pressure spring (334).
2. A pipe-mounting coupling flange according to claim 1, wherein: the outer buckling unit (32) comprises a buckling spring (321) and a buckling raised head (322); clamping raised heads (322) are evenly arranged on the outer wall of the sleeve (31) in a sliding fit mode, and clamping springs (321) are arranged on the outer wall of the sleeve (31) where the clamping raised heads (322) are installed and are abutted to the clamping raised heads (322).
3. A pipe-mounting coupling flange according to claim 1, wherein: the limiting unit (35) comprises a plurality of limiting sleeve columns (351), a limiting spring (352) and a limiting ring (353), and the limiting ring (353) is arranged on the inner wall of the outer end of the sleeve (31) in a clamping manner; one end of each of the plurality of limiting sleeve columns (351) is connected to the limiting ring (353), the other end of each of the plurality of limiting sleeve columns (351) is connected to the outer wall of the isolation rubber ring (34), and the limiting spring (352) is sleeved on the outer wall of each of the plurality of limiting sleeve columns (351).
4. A pipe-mounting coupling flange according to claim 1, wherein: the clamping unit (36) comprises a clamping sleeve (361) and a rubber backing ring (362); clamping sleeve (361) and rubber backing ring (362) all set up on a plurality of spacing sleeve posts (351) through sliding fit, clamping sleeve (361) are located the outside of rubber lantern ring.
5. A pipe-mounting coupling flange according to claim 1, wherein: card frame (2) including last snap ring (21) and lower snap ring (22), lower snap ring (22) and last snap ring (21) be half arc structure, and snap ring (21) are installed through the bolt in the upper end of lower snap ring (22).
6. A pipe-mounting coupling flange according to claim 1, wherein: the limiting unit (35) at the left end inside the sleeve (31) is recessed inwards and the limiting unit (35) at the right end inside the sleeve (31) protrudes outwards to further match with each other.
7. A pipe-mounting coupling flange according to claim 1, wherein: the outside of bevel joint ring (331) is the trapezium structure, and the outer wall of bevel joint ring (331) evenly is provided with the ball through sliding fit.
8. A pipe-fitting coupling flange according to claim 4, wherein: the inner wall of the clamping sleeve (361) is uniformly provided with rubber balls along the circumferential direction in a rolling fit mode; the outer wall of the rubber backing ring (362) is provided with an annular groove, and balls are uniformly arranged in the annular groove in a rolling mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010139291.8A CN111156358B (en) | 2020-03-03 | 2020-03-03 | Pipeline installation connecting flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010139291.8A CN111156358B (en) | 2020-03-03 | 2020-03-03 | Pipeline installation connecting flange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111156358A true CN111156358A (en) | 2020-05-15 |
| CN111156358B CN111156358B (en) | 2021-08-03 |
Family
ID=70566909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010139291.8A Active CN111156358B (en) | 2020-03-03 | 2020-03-03 | Pipeline installation connecting flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111156358B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0616165A1 (en) * | 1993-03-19 | 1994-09-21 | Bridgestone Flowtech Corporation | Pipe coupling |
| CN203404532U (en) * | 2013-08-24 | 2014-01-22 | 赵华勇 | Hard tube quick coupling |
| CN107940162A (en) * | 2017-11-29 | 2018-04-20 | 西南石油大学 | A kind of submarine pipeline connecting flange |
| CN108027096A (en) * | 2015-09-08 | 2018-05-11 | 日本管洗工业株式会社 | The connection method of pressure pipe and the production method of pressure pipe with flange |
| CN208381553U (en) * | 2018-05-23 | 2019-01-15 | 宿迁久巨环保科技有限公司 | A kind of flange producing zinc sulfate high sealing |
| CN208907514U (en) * | 2018-10-26 | 2019-05-28 | 陈亮 | A kind of petroleum pipeline attachment device |
| CN209991049U (en) * | 2019-03-19 | 2020-01-24 | 南京宁特新材料科技有限公司 | Waterproof pipeline connecting flange |
-
2020
- 2020-03-03 CN CN202010139291.8A patent/CN111156358B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0616165A1 (en) * | 1993-03-19 | 1994-09-21 | Bridgestone Flowtech Corporation | Pipe coupling |
| CN203404532U (en) * | 2013-08-24 | 2014-01-22 | 赵华勇 | Hard tube quick coupling |
| CN108027096A (en) * | 2015-09-08 | 2018-05-11 | 日本管洗工业株式会社 | The connection method of pressure pipe and the production method of pressure pipe with flange |
| CN107940162A (en) * | 2017-11-29 | 2018-04-20 | 西南石油大学 | A kind of submarine pipeline connecting flange |
| CN208381553U (en) * | 2018-05-23 | 2019-01-15 | 宿迁久巨环保科技有限公司 | A kind of flange producing zinc sulfate high sealing |
| CN208907514U (en) * | 2018-10-26 | 2019-05-28 | 陈亮 | A kind of petroleum pipeline attachment device |
| CN209991049U (en) * | 2019-03-19 | 2020-01-24 | 南京宁特新材料科技有限公司 | Waterproof pipeline connecting flange |
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| Publication number | Publication date |
|---|---|
| CN111156358B (en) | 2021-08-03 |
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Effective date of registration: 20210714 Address after: No.68, No.2 Road, industrial park, Shashi Economic Development Zone, Jingzhou City, Hubei Province Applicant after: Jingzhou Jianghan Auto Parts Manufacturing Co.,Ltd. Address before: 233010 No.173 Daqing Road, Yuhui District, Bengbu City, Anhui Province (Anhui Fengyuan Chemical Equipment Co., Ltd.) Applicant before: Xu Jijie |
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