CN111219550B - Natural gas pipeline with flange sealing joint and installation method thereof - Google Patents
Natural gas pipeline with flange sealing joint and installation method thereof Download PDFInfo
- Publication number
- CN111219550B CN111219550B CN202010033883.1A CN202010033883A CN111219550B CN 111219550 B CN111219550 B CN 111219550B CN 202010033883 A CN202010033883 A CN 202010033883A CN 111219550 B CN111219550 B CN 111219550B
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- joint
- natural gas
- pipeline
- flange
- gas pipeline
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 239000003345 natural gas Substances 0.000 title claims abstract description 69
- 238000007789 sealing Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 title claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 59
- 239000000696 magnetic material Substances 0.000 claims description 26
- 239000003302 ferromagnetic material Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000246 remedial effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- F16L23/032—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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
- F16B11/008—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing of tubular elements or rods in coaxial engagement
-
- 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
- F16L23/003—Auxiliary devices
-
- 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
- F16L23/165—Flanged joints characterised by the sealing means comprising a viscous mass, e.g. hardenable
-
- 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
Abstract
The invention relates to a natural gas pipeline with a flange sealing joint and an installation method thereof, which can effectively prevent the flange of a natural gas conveying pipeline from leaking. The flange sealing joint comprises a male joint and a female joint, a convex part is arranged outside the radial end face of the male joint, a concave part capable of accommodating the convex part of the male joint is arranged at the end part of the female joint, the convex part and the concave part are arranged in a circle along the circumferential direction, an internal sealing element is arranged at the joint of the male joint and the female joint and is arranged in a circle along the circumferential direction, and an adhesive is arranged on the outer surface of the internal sealing element and can be bonded with the inner wall of a natural gas pipeline to realize the sealing of the joint; the technical problem of natural gas pipeline flange leakage can be effectively solved, the sealing effect is good, the cost is low, and the installation and operation are simple and convenient.
Description
Technical Field
The invention relates to a natural gas pipeline, in particular to a natural gas pipeline with a flange sealing joint and an installation method thereof.
Background
The natural gas pipeline refers to a pipeline for conveying natural gas (including associated gas produced by an oil field) from a mining place or a processing plant to a city gas distribution center or an industrial enterprise user, and is also called a gas transmission pipeline. The natural gas pipeline is used for conveying natural gas, and is a way for conveying a large amount of natural gas on land. Natural gas pipelines account for about half of the total pipeline length in the world.
The gas transmission pipeline system is a continuous closed transmission system, natural gas is in a state of pressure from transmission and storage to use of users, the harmfulness is large when an accident happens, the spread range is wide, the natural gas is wasted once the pipeline is leaked, and if the discharged natural gas meets open fire, the fire is easy to cause.
A part of natural gas pipelines are assembled by connecting single pipes one by one in a welding mode, the other connecting mode is to connect the natural gas pipelines by using flanges, and the flange leakage is one of common natural gas leakage modes. The flange leakage is natural gas leakage caused by the reasons of loosening of fastening bolts, failure of a flange sealing assembly and the like, and after the flange natural gas leakage occurs, the following three existing methods can be adopted for processing: directly fastening the flange, replacing a sealing assembly, manufacturing a flange clamp and stopping leakage under pressure.
However, the above three methods are all remedial measures after natural gas leakage occurs, and the three remedial measures all have certain limitations, for example, flanges are directly fastened, and the success rate of treating flange leakage is relatively low; when the sealing component is replaced, the pipeline is required to stop conveying, so that the life and production are influenced; when the flange clamp is manufactured, a plurality of parts are additionally arranged, and the clamp is easy to fail.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a flange sealing joint which can effectively prevent the flange of a natural gas conveying pipeline from leaking.
In order to realize the technical purpose, the scheme of the invention is as follows: the utility model provides a natural gas line who takes flange sealing joint, flange sealing joint include male joint and female joint, and the radial terminal surface outside of male joint sets up the bulge, and the tip setting of female joint can hold the recess of male joint bulge, and the bulge is circumference direction with the recess and sets up round, its characterized in that: an internal sealing element is arranged at the joint of the male joint and the female joint, the internal sealing element is arranged in a circle in the circumferential direction, and an adhesive is arranged on the outer surface of the internal sealing element and can be adhered to the inner wall of the natural gas pipeline to seal the joint;
the top of the internal sealing element is provided with a reinforcing rib along the axial direction, the inner surface of the internal sealing element is provided with a spiral groove, one end of the spiral groove is provided with a pressing trolley, the pressing trolley is provided with a sliding block matched with the groove of the internal sealing element, and the sliding block is in a structure clamped with the groove, so that the pressing trolley can only move along the extending direction of the groove;
the pressing trolley is made of ferromagnetic materials, and the pipe body of the natural gas pipeline and the flange sealing joint are made of non-ferromagnetic materials; during installation, the magnetic material is utilized to suck the pressing trolley outside the natural gas pipeline, the magnetic material outside the natural gas pipeline is controlled to rotate spirally around the outside of the natural gas pipeline, and pressing of the pressing trolley on the internal sealing element is achieved.
Preferably, the groove is a convex groove, and the sliding block of the pressing trolley is also of a convex structure.
Preferably, the slider sets up in the bottom of pressfitting dolly, and the slider includes left slider and right slider, and left and right slider structure is the same, sets up the spin in the bottom of slider, realizes the removal of slider in the recess.
Preferably, a roller is provided between the left slider and the right slider.
Preferably, the body of the pressing trolley is of a cube structure, and rolling balls are arranged on five other surfaces of the pressing trolley.
Preferably, the rolling ball arranged on the sliding block of the pressing trolley is made of a non-ferromagnetic material.
Preferably, the rolling balls arranged on the other five surfaces of the pressing trolley are made of non-ferromagnetic materials.
The invention also provides an installation method of the natural gas pipeline with the flange sealing joint, which is characterized by comprising the following steps:
bonding one end of the inner seal member within the male/female fitting of the pipe already fixedly installed; adjusting the position of the inner sealing element to enable the reinforcing rib to be positioned at the top end of the pipeline;
manually bonding an inner seal member positioned in the fixedly installed pipe to the inner wall of the pipe;
embedding the pressing trolley into the spiral groove from the starting end of the spiral groove of the internal sealing element;
connecting the female/male joint of the pipeline to be installed with the installed pipeline joint, and connecting a flange structure;
hollowing out a soil layer at the bottom around the pipeline joint, facilitating the operation of the magnetic material to move around the outside of the pipeline, and simultaneously making a spiral mark corresponding to the spiral groove on the outer surface of the pipeline;
starting the magnetic material, controlling the magnetic material to slowly move according to the spiral mark, and attracting the pressing trolley to move in the spiral groove until the pressing trolley is separated from the free end of the spiral groove;
controlling the magnetic material to move along the axial direction of the pipeline, and moving the pressing trolley out of the pipeline;
completing the connection of the section of the natural gas pipeline; and (4) repeating the steps (1) to (7) until all the natural gas pipelines with the flange sealing joints are installed.
The invention has the beneficial effects that:
according to the invention, the internal sealing element is arranged in the flange joint and is bonded on the inner wall of the pipeline joint, so that when a natural gas pipeline conveys high-pressure natural gas, the internal sealing element can be tightly attached to the inner wall of the pipeline joint under the pressure action of the natural gas, sealing is realized, and the leakage of the natural gas pipeline flange is effectively avoided.
The flange joint is arranged into a male joint and a female joint, a convex part is arranged outside the radial end surface of the male joint, and a concave part capable of accommodating the convex part of the male joint is arranged at the end part of the female joint; secondly, the setting of bulge can provide the support for the inner seal, has solved the technical problem that conventional flange structure connection terminal surface part can not provide the support.
The mode of adopting artifical pressfitting carries out the pressfitting to inside sealing member, designs the pressfitting dolly into the material that can be attracted by magnetic material, utilizes magnetic material to attract the pressfitting dolly, drives the pressfitting dolly and removes in the spiral groove of inner wall sealing member, and when ingenious solution the natural gas line installation, the technical problem of inside sealing member bonding installation.
In conclusion, the technical scheme of the invention can effectively solve the technical problem of leakage of the natural gas pipeline flange, and has the advantages of good sealing effect, low cost and simple and convenient installation and operation.
Drawings
For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. Like reference numerals in the drawings refer to like parts. It will be appreciated by persons skilled in the art that the drawings are intended to illustrate preferred embodiments of the invention without any limiting effect on the scope of the invention, and that the various components in the drawings are not drawn to scale.
FIG. 1 is a prior art natural gas pipeline flange joint design;
FIG. 2 is a flange joint structure of a natural gas pipeline according to the present invention;
FIG. 3 is an enlarged view of a portion of the female connector of the male connector;
FIG. 4 is a schematic cross-sectional view of the inner seal;
FIG. 5 is an enlarged view of the inner seal spiral groove;
FIG. 6 is a schematic view of a stitching cart;
reference numerals: 1. an inner seal; 2. a projection; 3. a recessed portion; 4. a helical groove; 5. a groove shaped like a Chinese character 'tu'; 6. a slider; 7. and a roller.
Detailed Description
The inventive concept of the present invention will be described in detail below with reference to the accompanying drawings. What has been described herein is merely a preferred embodiment in accordance with the present invention and other ways of practicing the invention will occur to those skilled in the art and are within the scope of the invention. In the following detailed description, directional terms, such as "upper", "lower", "inner", "outer", and the like, are used with reference to the orientation depicted in the accompanying drawings. Components of embodiments of the present invention can be positioned in a number of different orientations and the directional terminology is used for purposes of illustration and is in no way limiting.
Referring to fig. 2, flange sealing joint includes male joint and female joint, and male joint and female joint cooperation realize sealing connection, and the radial terminal surface outside of male joint sets up the bulge, and the internal diameter of bulge is the same with natural gas line's internal diameter, and female joint's tip sets up the recess that can hold the male joint bulge, and the bulge is circumferential direction with the recess and sets up the round.
An internal sealing element is arranged at the joint of the male connector and the female connector, the internal sealing element is of a tubular structure, and an adhesive is arranged on the outer surface of the internal sealing element and can be bonded with the inner wall of the natural gas pipeline to seal the joint.
Referring to fig. 3, the rib is arranged in the axial direction of the inner sealing element, has certain rigidity, and can play a supporting role, so that the inner sealing element extends in the axial direction, and the inner sealing element is prevented from being bonded in the axial direction in the installation process.
The internal surface of inside sealing member is provided with spiral helicine recess, and the removal track of pressfitting dolly can be regarded as to the recess, and during the connecting tube connects, sets up the pressfitting dolly in the one end of spiral helicine recess, and the pressfitting dolly can remove along the recess, through the removal of pressfitting dolly, bonds the surface of inside sealing member and natural gas line's inner wall.
In order to reduce the cost, the pressing trolley can be manually driven to move, and because the pressing trolley is installed, a relatively sealed space is formed after a male joint and a female joint of a natural gas pipeline are in butt joint, manual operation cannot conveniently enter the space for operation, the pressing trolley can be made of ferromagnetic materials, and the natural gas pipeline is made of non-ferromagnetic materials; when the natural gas pipeline sealing device is installed, the magnetic material is used for sucking the pressing trolley outside the natural gas pipeline, the magnetic material outside the natural gas pipeline is controlled to rotate spirally around the outside of the natural gas pipeline, and pressing of the pressing trolley on the internal sealing element is achieved.
After the pressing of the pressing trolley on the internal sealing element is completed, the pressing trolley can be separated from the free end of the spiral groove, so that the pressing trolley is not limited by the spiral groove, and is moved to the open end of the natural gas pipeline by the magnetic material so as to be moved out of the pressing trolley.
Referring to fig. 4 and 5, the pressing trolley is provided with a sliding block matched with the groove of the internal sealing element, the sliding block is arranged in a structure clamped with the groove, the groove can be a groove in a shape like a Chinese character 'tu', and the sliding block is also in a structure like the Chinese character 'tu', so that the phenomenon that when the pressing trolley moves to the upper end of a pipeline along with a magnetic material, if the pressing trolley is not operated properly, the attraction of the magnetic material to the pressing trolley is insufficient, and the pressing trolley can not fall off from the groove due to gravity due to the clamping structure of the pressing trolley and the groove.
The sliding block is arranged at the bottom of the pressing trolley, the sliding block can be a left sliding block and a right sliding block, the left sliding block and the right sliding block are identical in structure, the rolling balls are arranged at the bottom of the sliding block, the sliding block moves in the groove, and the pressing trolley moves along the groove; a roller is arranged between the left sliding block and the right sliding block and provides pressing pressure; in addition, in order to avoid breaking away from the recess at the pressfitting dolly after, with the in-process of its pipeline of shifting out, because the misoperation leads to the pressfitting dolly to break away from magnetic material and roll, can all set up the spin at five other faces of pressfitting dolly, realize the removal of pressfitting dolly through the spin, the spin is non-magnetic material.
When the natural gas pipeline is connected, one end of the internal sealing element is firstly bonded in a male/female joint of the fixedly installed pipeline, and when the internal sealing element is bonded, the rib is positioned at the top end; manually pressing and bonding the outer surface of the internal sealing element on the inner wall of the pipeline; embedding the starting end of the spiral groove of the internal sealing element into the spiral groove of the pressing trolley; then, connecting the female/male joint of the pipeline to be installed with the installed pipeline joint, and connecting a flange structure; in order to facilitate operation, the soil layer at the bottom near the pipeline joint is hollowed, so that the magnetic material can move around the outside of the pipeline conveniently, and meanwhile, the outer surface of the pipeline is provided with spiral marks corresponding to the spiral grooves; starting the magnetic material, controlling the magnetic material to slowly move according to the spiral mark, attracting the pressing trolley to move in the spiral groove until the pressing trolley is separated from the free end of the spiral groove, and in order to ensure that the pressing trolley finishes pressing and is separated from the spiral groove, the magnetic material can do a section of spiral motion along the spiral mark; finally, controlling the magnetic material to move along the axial direction of the pipeline, and moving the pressing trolley out of the pipeline; and finishing the flange joint connection of the natural gas pipeline.
The scope of the invention is limited only by the claims. Persons of ordinary skill in the art, having benefit of the teachings of the present invention, will readily appreciate that alternative structures to the structures disclosed herein are possible alternative embodiments, and that combinations of the disclosed embodiments may be made to create new embodiments, which also fall within the scope of the appended claims.
Claims (7)
1. The utility model provides a natural gas line's installation method with flange sealing joint, its characterized in that, including the natural gas line who has flange sealing joint, flange sealing joint includes male joint and female joint, and the radial terminal surface outside of male joint sets up the bulge, and the tip setting of female joint can hold the concave part of male joint bulge, and the bulge is the circumference direction with the concave part and sets up round, its characterized in that: an internal sealing element is arranged at the joint of the male joint and the female joint, the internal sealing element is arranged in a circle in the circumferential direction, and an adhesive is arranged on the outer surface of the internal sealing element and can be adhered to the inner wall of the natural gas pipeline to seal the joint;
the top of the internal sealing element is provided with a reinforcing rib along the axial direction, the inner surface of the internal sealing element is provided with a spiral groove, one end of the spiral groove is provided with a pressing trolley, the pressing trolley is provided with a sliding block matched with the groove of the internal sealing element, and the sliding block is arranged in a structure clamped with the groove, so that the pressing trolley can move along the extending direction of the groove;
the pressing trolley is made of ferromagnetic materials, and the pipe body of the natural gas pipeline and the flange sealing joint are made of non-ferromagnetic materials; when the natural gas pipeline sealing device is installed, the magnetic material is used for sucking the pressing trolley outside the natural gas pipeline, the magnetic material outside the natural gas pipeline is controlled to rotate spirally around the outside of the natural gas pipeline, and pressing of the pressing trolley on the internal sealing element is achieved;
the installation method comprises the following steps:
1) bonding one end of the inner seal member within the male/female fitting of the pipe already fixedly installed; adjusting the position of the inner sealing element to enable the reinforcing rib to be positioned at the top end of the pipeline;
2) manually bonding an inner seal member positioned in the fixedly installed pipe to the inner wall of the pipe;
3) embedding the pressing trolley into the spiral groove from the starting end of the spiral groove of the internal sealing element;
4) connecting the female/male joint of the pipeline to be installed with the installed pipeline joint, and connecting a flange structure;
5) hollowing out a soil layer at the bottom around the pipeline joint, facilitating the operation of the magnetic material to move around the outside of the pipeline, and simultaneously making a spiral mark corresponding to the spiral groove on the outer surface of the pipeline;
6) starting the magnetic material, controlling the magnetic material to slowly move according to the spiral mark, and attracting the pressing trolley to move in the spiral groove until the pressing trolley is separated from the free end of the spiral groove;
7) controlling the magnetic material to move along the axial direction of the pipeline, and moving the pressing trolley out of the pipeline;
8) completing the connection of the natural gas pipeline; and (4) repeating the steps 1-7 until all the natural gas pipelines with the flange sealing joints are installed.
2. The method of installing a natural gas pipeline with a flange seal joint as claimed in claim 1, wherein the groove is a "male" groove, and the slider of the stitching trolley is also of a "male" configuration.
3. The method for installing the natural gas pipeline with the flange seal joint as claimed in claim 2, wherein the sliding block is arranged at the bottom of the pressing trolley and comprises a left sliding block and a right sliding block, the left sliding block and the right sliding block are identical in structure, and the rolling ball is arranged at the bottom of the sliding block to realize the movement of the sliding block in the groove.
4. The method of installing a natural gas pipeline with a flange-sealed joint according to claim 3, wherein a roller is provided in the middle of the left slider and the right slider.
5. The method for installing the natural gas pipeline with the flange seal joint as claimed in claim 4, wherein the body of the pressing trolley is of a rectangular parallelepiped structure, and rolling balls are arranged on the other five surfaces of the pressing trolley.
6. The method for installing a natural gas pipeline with a flange seal joint as claimed in claim 5, wherein the rolling ball arranged on the sliding block of the pressing trolley is made of non-ferromagnetic material.
7. The method for installing a natural gas pipeline with a flange seal joint as claimed in claim 6, wherein the rolling balls arranged on the other five sides of the pressing trolley are made of non-ferromagnetic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033883.1A CN111219550B (en) | 2020-01-13 | 2020-01-13 | Natural gas pipeline with flange sealing joint and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033883.1A CN111219550B (en) | 2020-01-13 | 2020-01-13 | Natural gas pipeline with flange sealing joint and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111219550A CN111219550A (en) | 2020-06-02 |
| CN111219550B true CN111219550B (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010033883.1A Active CN111219550B (en) | 2020-01-13 | 2020-01-13 | Natural gas pipeline with flange sealing joint and installation method thereof |
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| Country | Link |
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| CN (1) | CN111219550B (en) |
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|---|---|---|---|---|
| EP0369903A1 (en) * | 1988-11-17 | 1990-05-23 | Tvt Composite | Process for the connexion and assembly of tubular elements, particularly for producing a bicycle frame, and the frame produced thereby |
| GB2340245A (en) * | 1998-07-24 | 2000-02-16 | Jme Ltd | Control and/ or tracking of a pipeline crawler |
| CN204437539U (en) * | 2015-01-20 | 2015-07-01 | 国家电网公司 | A kind of seal for pipe joints linkage structure |
| CN204533904U (en) * | 2015-03-13 | 2015-08-05 | 罗勇 | Long-distance Transmission Pipeline linkage structure |
| CN204704511U (en) * | 2015-04-30 | 2015-10-14 | 生维国 | A kind of antiseep flange linkage structure |
| CN105690734A (en) * | 2014-11-28 | 2016-06-22 | 林世平 | Connecting method used for thermoplastic fiber prepreg tape winding pipeline |
| CN107091391A (en) * | 2017-05-26 | 2017-08-25 | 中国矿业大学 | A kind of fracture automatic plugging device of freezing pipe joint |
| CN109248831A (en) * | 2018-11-29 | 2019-01-22 | 刘小军 | Hydraulic engineering inner wall of the pipe connects sealing device |
| CN208503751U (en) * | 2018-06-14 | 2019-02-15 | 梅州中燃城市燃气发展有限公司 | A kind of aerial auxiliary device of natural gas line |
| CN109798401A (en) * | 2019-01-31 | 2019-05-24 | 江山跟政科技有限公司 | Two-chamber partition sets the downcomer of string holes |
-
2020
- 2020-01-13 CN CN202010033883.1A patent/CN111219550B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0369903A1 (en) * | 1988-11-17 | 1990-05-23 | Tvt Composite | Process for the connexion and assembly of tubular elements, particularly for producing a bicycle frame, and the frame produced thereby |
| GB2340245A (en) * | 1998-07-24 | 2000-02-16 | Jme Ltd | Control and/ or tracking of a pipeline crawler |
| CN105690734A (en) * | 2014-11-28 | 2016-06-22 | 林世平 | Connecting method used for thermoplastic fiber prepreg tape winding pipeline |
| CN204437539U (en) * | 2015-01-20 | 2015-07-01 | 国家电网公司 | A kind of seal for pipe joints linkage structure |
| CN204533904U (en) * | 2015-03-13 | 2015-08-05 | 罗勇 | Long-distance Transmission Pipeline linkage structure |
| CN204704511U (en) * | 2015-04-30 | 2015-10-14 | 生维国 | A kind of antiseep flange linkage structure |
| CN107091391A (en) * | 2017-05-26 | 2017-08-25 | 中国矿业大学 | A kind of fracture automatic plugging device of freezing pipe joint |
| CN208503751U (en) * | 2018-06-14 | 2019-02-15 | 梅州中燃城市燃气发展有限公司 | A kind of aerial auxiliary device of natural gas line |
| CN109248831A (en) * | 2018-11-29 | 2019-01-22 | 刘小军 | Hydraulic engineering inner wall of the pipe connects sealing device |
| CN109798401A (en) * | 2019-01-31 | 2019-05-24 | 江山跟政科技有限公司 | Two-chamber partition sets the downcomer of string holes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111219550A (en) | 2020-06-02 |
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