CN111677948B - Hydraulic engineering pipeline inner wall connecting and sealing device and method - Google Patents
Hydraulic engineering pipeline inner wall connecting and sealing device and method Download PDFInfo
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- CN111677948B CN111677948B CN202010410321.4A CN202010410321A CN111677948B CN 111677948 B CN111677948 B CN 111677948B CN 202010410321 A CN202010410321 A CN 202010410321A CN 111677948 B CN111677948 B CN 111677948B
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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
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
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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
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/03—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection
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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
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/04—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a hydraulic engineering pipeline inner wall connecting and sealing device and a method, wherein the device comprises a first pipe body and a second pipe body, the outer side walls of the first pipe body and the second pipe body are provided with mounting pipes, the opposite ends of the first pipe body and the second pipe body extend into the mounting pipes, the first pipe body, the second pipe body and the mounting pipes are connected through a plurality of fastening screws, two first annular plates are symmetrically arranged between the first pipe body and the second pipe body, the side walls of the opposite ends of the two first annular plates are provided with annular sealing rings, and the end parts of the opposite ends of the first pipe body and the second pipe body are respectively abutted against the opposite annular sealing rings. The sealing device is reasonable in structural design, the end parts and the inner walls of the first pipe body and the second pipe body are in sealing connection, the connecting piece is prevented from being directly exposed to the outside, the leakage and water seepage phenomena are avoided, the waste of water resources is avoided, and the conveying efficiency of the water resources is improved.
Description
Technical Field
The invention relates to the technical field of water conservancy pipelines, in particular to a connection sealing device and method for an inner wall of a water conservancy engineering pipeline.
Background
China is a big agricultural country, water conservancy facilities are necessary for perfecting, in China, because the nature of water resource is inhomogeneous, often need carry out transregional water transfer work, realize the reasonable make full use of water resource, when carrying out the allotment work of water resource, usually through the pipe-line transportation, but present pipe sealing connection most directly exposes in the external world, easily take place to reveal the infiltration phenomenon, and then can cause the waste of water resource, and reduce the conveying efficiency of water resource, we have designed a hydraulic engineering pipeline inner wall connection sealing device and method for this reason and have solved above problem.
Disclosure of Invention
The invention aims to solve the problem that the existing pipeline connection mode is easy to cause leakage and water seepage, and provides a hydraulic engineering pipeline inner wall connection sealing device and method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydraulic engineering pipeline inner wall connecting and sealing device comprises a first pipe body and a second pipe body, wherein installation pipes are arranged on the outer side walls of the first pipe body and the second pipe body, opposite ends of the first pipe body and the second pipe body extend into the installation pipes, the first pipe body, the second pipe body and the installation pipes are connected through a plurality of fastening screws, two first annular plates are symmetrically arranged between the first pipe body and the second pipe body, annular sealing rings are arranged on the side walls of the opposite ends of the two first annular plates, the end parts of the opposite ends of the first pipe body and the second pipe body are respectively abutted against the opposite annular sealing rings, two guide mechanisms are symmetrically arranged on the top and the inner bottom of the installation pipe, the four guide mechanisms are respectively fixedly connected with the opposite first annular plates, a sealing mechanism is arranged between the two first annular plates, two ends of the sealing mechanism are respectively abutted against the side walls of the two first annular plates, two gas transmission mechanisms are symmetrically arranged in the mounting pipe, gas transmission ends of the two gas transmission mechanisms are communicated with the sealing mechanism, and connecting mechanisms matched with the sealing mechanism are arranged at the inner top and the inner bottom of the first pipe body and the second pipe body.
Preferably, guiding mechanism is including setting up the guide way on the installation pipe inside wall, spacing sliding connection has the deflector in the guide way, be connected with a plurality of springs between deflector and the guide way inside wall, the one end that the guide way was kept away from to the deflector rather than relative first annular plate fixed connection.
Preferably, the sealing mechanism comprises a second annular plate disposed between the two first annular plates, the second annular plate is internally provided with an annular cavity, the outer side walls of two ends of the second annular plate are respectively provided with a communicating hole communicated with the annular cavity in a penetrating way, the two communicating holes are respectively internally provided with a sealing air bag, the end parts of the two opposite ends of the sealing air bags are respectively propped against the side wall of the first annular plate opposite to the sealing air bags, the air conveying ends of the two air conveying mechanisms respectively penetrate through the side wall of the second annular plate and respectively extend into the annular cavity, the inside wall symmetry of second annular slab is equipped with two and connects the gasbag, the annular intracavity symmetry is equipped with two first communicating pipes, two the relative one end of first communicating pipe all runs through the lateral wall of second annular slab in proper order, connect the lateral wall of gasbag and with be connected the gasbag and communicate each other, two connect the equal fixedly connected with of both ends lateral wall of gasbag and coupling mechanism matched with first magnetic path.
Preferably, air transmission mechanism is including fixing the well cavity pole on the installation pipe inside wall, well cavity pole inner seal sliding connection has the piston piece, the lateral wall of installation pipe runs through and is equipped with the threaded rod, the threaded rod runs through the lateral wall of installation pipe, the lateral wall of well cavity pole in proper order and rotates with the lateral wall of piston piece to be connected, the threaded rod is threaded connection with the lateral wall of installation pipe, the lateral wall of well cavity pole, be equipped with second communicating pipe in the well cavity pole, the second communicating pipe runs through the lateral wall of well cavity pole, the lateral wall of second annular slab in proper order and extends to the annular chamber.
Preferably, the connecting mechanism comprises an L-shaped plate fixed on the inner side wall of the first pipe body, the side wall of the L-shaped plate is provided with a mounting groove, the inner side wall of the mounting groove is fixedly connected with a second magnetic block, and the second magnetic block is opposite to the first magnetic block in relative side wall magnetic pole.
A use method of a hydraulic engineering pipeline inner wall connecting and sealing device comprises the following steps:
s1: the end parts of the opposite ends of the first pipe body and the second pipe body extend into the mounting pipe respectively, the end parts of the opposite ends of the first pipe body and the second pipe body are abutted against the side walls of the opposite annular sealing rings, at the moment, the side walls of the two first annular plates are abutted against the side walls of the second annular plates, and then the mounting pipe is connected with the first pipe body and the second pipe body through a plurality of fastening screws;
s2: a user manually rotates the two threaded rods, so that the two threaded rods drive the two piston blocks to move relatively, when the two piston blocks move relatively, the air transmission work can be carried out in the annular cavity through the second communicating pipe, and further the expansion and bulging work of the sealing air bag is realized, when the two piston blocks expand and bulge, the sealing air bag can have the effect of abutting and supporting the first annular plate, at the moment, the first pipe body and the second pipe body both have the effect of sufficiently abutting and tightly sealing the annular sealing ring, the sealing air bag has the sufficient sealing effect with the first annular plate, and further the sufficient sealing effect of the joint between the first pipe body and the second pipe body can be realized;
s3: when two piston block relative motion, can realize two inflation of connecting the gasbag and swell work, when its inflation was bloated, can realize that first magnetic path extends to the mounting groove in, under the effect of second magnetic path, can realize the linkage effect between second annular plate and the L shaped plate, and then strengthen the sealed effect of being connected between first body, the second body.
Compared with the prior art, the invention has the beneficial effects that:
1. the side walls opposite to the two first annular plates are respectively provided with an annular sealing ring which is respectively abutted against the first pipe body and the second pipe body, and under the action of the sealing mechanism and the gas transmission mechanism, the end parts of the first pipe body and the second pipe body can be fully abutted against the annular sealing rings, so that the sealing performance of the first pipe body and the second pipe body is ensured;
2. the arrangement of the air conveying mechanism can realize that the sealing air bag in the sealing mechanism can play a role in pushing and supporting the first annular plate, and meanwhile, the sealing air bag can be fully abutted against the first annular plate, so that the sealing effect of the sealing air bag is ensured, and the water source leakage phenomenon is avoided;
3. the arrangement of connecting gasbag, first magnetic path, second magnetic path can realize the stable connection between L shaped plate and the second annular plate, can strengthen the connection effect between first body and the second body promptly.
In conclusion, the pipe joint is reasonable in structural design, the end parts and the inner walls of the first pipe body and the second pipe body are hermetically connected, so that the connecting piece is prevented from being directly exposed to the outside, the water leakage phenomenon is avoided, the waste of water resources is avoided, and the conveying efficiency of the water resources is improved.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic engineering pipeline inner wall connection sealing device and method according to the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 2;
FIG. 4 is an enlarged view of the structure of FIG. 2 at C;
FIG. 5 is a schematic view of the connection of the sealing mechanism;
fig. 6 is a schematic view of the connection of the first annular plate and the annular seal ring.
In the figure: the device comprises a first pipe body 1, a second pipe body 2, an installation pipe 3, a fastening screw 4, a threaded rod 5, a guide groove 6, a spring 7, a guide plate 8, a hollow rod 9, a piston block 10, a first annular plate 11, an annular sealing ring 12, a second communication pipe 13, a sealed air bag 14, a second annular plate 15, a L-shaped plate 16, a first communication pipe 17, a connection air bag 18, a second magnetic block 19, a first magnetic block 20, an annular cavity 21 and a mounting groove 22.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-6, a hydraulic engineering pipeline inner wall connecting and sealing device comprises a first pipe body 1 and a second pipe body 2, wherein the outer side walls of the first pipe body 1 and the second pipe body 2 are provided with mounting pipes 3, the opposite ends of the first pipe body 1 and the second pipe body 2 extend into the mounting pipes 3, the first pipe body 1 and the second pipe body 2 are connected with the mounting pipes 3 through a plurality of fastening screws 4, two first annular plates 11 are symmetrically arranged between the first pipe body 1 and the second pipe body 2, the side walls of the opposite ends of the two first annular plates 11 are provided with annular sealing rings 12, the end parts of the opposite ends of the first pipe body 1 and the second pipe body 2 are respectively abutted against the opposite annular sealing rings 12, the top and the bottom in the mounting pipe 3 are respectively and symmetrically provided with two guide mechanisms, the four guide mechanisms are respectively fixedly connected with the opposite first annular plates 11, the guide mechanisms comprise guide grooves 6 arranged on the inner side walls of the mounting pipes 3, a guide plate 8 is connected in the guide groove 6 in a limiting sliding manner, a plurality of springs 7 are connected between the guide plate 8 and the inner side wall of the guide groove 6, and one end, far away from the guide groove 6, of the guide plate 8 is fixedly connected with a first annular plate 11 opposite to the guide groove;
a sealing mechanism is arranged between the two first annular plates 11, two ends of the sealing mechanism respectively abut against the side walls of the two first annular plates 11, the sealing mechanism comprises a second annular plate 15 arranged between the two first annular plates 11, an annular cavity 21 is arranged in the second annular plate 15, the outer side walls of two ends of the second annular plate 15 are respectively provided with a communicating hole communicated with the annular cavity 21 in a penetrating way, a sealing air bag 14 is arranged in each communicating hole, the end parts of the opposite ends of the two sealing air bags 14 abut against the side walls of the opposite first annular plates 11, the air conveying ends of the two air conveying mechanisms respectively penetrate through the side walls of the second annular plate 15 and extend into the annular cavity 21, two connecting air bags 18 are symmetrically arranged on the inner side wall of the second annular plate 15, two first communicating pipes 17 are symmetrically arranged in the annular cavity 21, and the opposite ends of the two first communicating pipes 17 sequentially penetrate through the side wall of the second annular plate 15, The side walls of the connecting air bags 18 are communicated with the connecting air bags 18, and the side walls of the two ends of the two connecting air bags 18 are fixedly connected with first magnetic blocks 20 matched with the connecting mechanism;
two gas transmission mechanisms are symmetrically arranged in the mounting pipe 3, gas transmission ends of the two gas transmission mechanisms are communicated with the sealing mechanism, each gas transmission mechanism comprises a hollow rod 9 fixed on the inner side wall of the mounting pipe 3, a piston block 10 is connected in the hollow rod 9 in a sealing and sliding mode, a threaded rod 5 penetrates through the side wall of the mounting pipe 3, the side wall of the hollow rod 9 and the side wall of the piston block 10 are connected in a rotating mode, the threaded rod 5 is connected with the side wall of the mounting pipe 3 and the side wall of the hollow rod 9 through threads, a second communicating pipe 13 is arranged in the hollow rod 9, and the second communicating pipe 13 penetrates through the side wall of the hollow rod 9 and the side wall of the second annular plate 15 and extends into the annular cavity 21;
the interior top and the interior bottom of first body 1 and second body 2 all are equipped with the coupling mechanism with sealing mechanism matched with, and coupling mechanism is including fixing the L shaped plate 16 on 1 inside wall of first body, and the lateral wall of L shaped plate 16 is equipped with mounting groove 22, the inside wall fixedly connected with second magnetic path 19 of mounting groove 22, and second magnetic path 19 is opposite with the relative lateral wall magnetic pole of first magnetic path 20.
A use method of a hydraulic engineering pipeline inner wall connecting and sealing device comprises the following steps:
s1: the end parts of the opposite ends of the first pipe body 1 and the second pipe body 2 respectively extend into the mounting pipe 3, the end parts of the opposite ends of the first pipe body 1 and the second pipe body 2 are tightly abutted against the side walls of the opposite annular sealing rings 12, at the moment, the opposite side walls of the two first annular plates 11 are tightly abutted against the side walls of the second annular plates 15, and then the mounting pipe 3 is connected with the first pipe body 1 and the second pipe body 2 through a plurality of fastening screws 4;
s2: a user manually rotates the two threaded rods 5, so that the two threaded rods 5 drive the two piston blocks 10 to perform relative motion, when the two piston blocks 10 perform relative motion, gas transmission work can be performed in the annular cavity 21 through the second communicating pipe 13, and then expansion and swelling work of the sealing air bag 14 is realized, when the two piston blocks expand and swell, the sealing air bag 14 can have a supporting effect on the first annular plate 11, at the moment, the first pipe body 1 and the second pipe body 2 and the annular sealing ring 12 both have a sufficient supporting and sealing effect, the sealing air bag 14 and the first annular plate 11 have a sufficient sealing effect at the same time, and further, a joint between the first pipe body 1 and the second pipe body 2 can have a sufficient sealing effect;
s3: when two piston blocks 10 relative motion, can realize two inflation of connecting gasbag 18 and swell work, when its inflation was swelled, can realize first magnetic path 20 and extend to mounting groove 22 in, under the effect of second magnetic path 19, can realize the connection effect between second annular plate 15 and the L shaped plate 16, and then strengthen the sealed effect of connection between first body 1, the second body 2.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The inner wall connecting and sealing device for the hydraulic engineering pipeline comprises a first pipe body (1) and a second pipe body (2), and is characterized in that the outer side walls of the first pipe body (1) and the second pipe body (2) are provided with installation pipes (3), the opposite ends of the first pipe body (1) and the second pipe body (2) extend into the installation pipes (3), the first pipe body (1) and the second pipe body (2) are connected with the installation pipes (3) through a plurality of fastening screws (4), two first annular plates (11) are symmetrically arranged between the first pipe body (1) and the second pipe body (2), the side walls of the opposite ends of the two first annular plates (11) are provided with annular sealing rings (12), the end parts of the opposite ends of the first pipe body (1) and the second pipe body (2) are respectively abutted against the opposite annular sealing rings (12), and two guide mechanisms are symmetrically arranged at the top and the bottom in the installation pipes (3), the four guide mechanisms are respectively and fixedly connected with the first annular plates (11) opposite to the four guide mechanisms, a sealing mechanism is arranged between the two first annular plates (11), two ends of the sealing mechanism are respectively and tightly abutted against the side walls of the two first annular plates (11), two gas transmission mechanisms are symmetrically arranged in the mounting pipe (3), the gas transmission ends of the two gas transmission mechanisms are communicated with the sealing mechanism, and the inner tops and the inner bottoms of the first pipe body (1) and the second pipe body (2) are respectively provided with a connecting mechanism matched with the sealing mechanism;
sealing mechanism is including setting up second annular plate (15) between two first annular plates (11), be equipped with annular chamber (21) in second annular plate (15), the both ends lateral wall of second annular plate (15) all runs through and is equipped with the intercommunicating pore that communicates each other with annular chamber (21), two all be equipped with sealed gasbag (14) in the intercommunicating pore, two sealed gasbag (14) opposite one end tip all offsets tightly rather than relative first annular plate (11) lateral wall, two gas transmission mechanism's gas transmission end all runs through the lateral wall of second annular plate (15) and all extends to in annular chamber (21), the inside wall symmetry of second annular plate (15) is equipped with two and connects gasbag (18), annular chamber (21) internal symmetry is equipped with two first communicating pipe (17), two the relative one end of first communicating pipe (17) all runs through the lateral wall of second annular plate (15) in proper order, The side walls of the connecting air bags (18) are communicated with the connecting air bags (18), and the side walls of two ends of each of the two connecting air bags (18) are fixedly connected with first magnetic blocks (20) matched with the connecting mechanism;
defeated gas mechanism is including fixing well hollow rod (9) on installation pipe (3) inside wall, well hollow rod (9) inner seal sliding connection has piston block (10), the lateral wall of installation pipe (3) runs through and is equipped with threaded rod (5), threaded rod (5) run through the lateral wall of installation pipe (3), the lateral wall of well hollow rod (9) in proper order and rotate with the lateral wall of piston block (10) and be connected, threaded rod (5) are threaded connection with the lateral wall of installation pipe (3), the lateral wall of well hollow rod (9), be equipped with second communicating pipe (13) in well hollow rod (9), second communicating pipe (13) run through the lateral wall of well hollow rod (9), the lateral wall of second annular plate (15) in proper order and extend to annular chamber (21).
2. The hydraulic engineering pipeline inner wall connecting and sealing device and method according to claim 1, wherein the guide mechanism comprises a guide groove (6) formed in the inner side wall of the installation pipe (3), a guide plate (8) is connected in the guide groove (6) in a limiting and sliding manner, a plurality of springs (7) are connected between the guide plate (8) and the inner side wall of the guide groove (6), and one end, far away from the guide groove (6), of the guide plate (8) is fixedly connected with a first annular plate (11) opposite to the guide plate.
3. The hydraulic engineering pipeline inner wall connection sealing device and method as claimed in claim 1, wherein the connection mechanism comprises an L-shaped plate (16) fixed on the inner side wall of the first pipe body (1), the side wall of the L-shaped plate (16) is provided with a mounting groove (22), the inner side wall of the mounting groove (22) is fixedly connected with a second magnetic block (19), and the second magnetic block (19) has opposite side wall magnetic poles to the first magnetic block (20).
4. A use method of a hydraulic engineering pipeline inner wall connection sealing device is characterized by comprising the following steps:
s1: the end parts of the opposite ends of the first pipe body (1) and the second pipe body (2) respectively extend into the mounting pipe (3), the end parts of the opposite ends of the first pipe body (1) and the second pipe body (2) are tightly abutted against the side walls of the opposite annular sealing rings (12), at the moment, the opposite side walls of the two first annular plates (11) are tightly abutted against the side wall of the second annular plate (15), and then the mounting pipe (3) is connected with the first pipe body (1) and the second pipe body (2) through a plurality of fastening screws (4);
s2: a user manually rotates the two threaded rods (5), so that the two threaded rods (5) drive the two piston blocks (10) to perform relative motion, when the two piston blocks (10) perform relative motion, the annular cavity (21) can be subjected to gas transmission work through the second communicating pipe (13), and then expansion and swelling work of the sealing air bag (14) is realized, when the two piston blocks expand and swell, the sealing air bag (14) can have a tight supporting effect on the first annular plate (11), at the moment, the first pipe body (1) and the second pipe body (2) and the annular sealing ring (12) can both have a sufficient tight sealing effect, the sealing air bag (14) and the first annular plate (11) have a sufficient sealing effect, and further the joint between the first pipe body (1) and the second pipe body (2) can have a sufficient sealing effect;
s3: when two piston blocks (10) move relatively, the expansion bulging work of two connecting air bags (18) can be realized, when the expansion bulging work is performed, the first magnetic block (20) can be extended into the mounting groove (22), and under the action of the second magnetic block (19), the connecting effect between the second annular plate (15) and the L-shaped plate (16) can be realized, so that the connecting sealing effect between the first pipe body (1) and the second pipe body (2) is enhanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010410321.4A CN111677948B (en) | 2020-05-15 | 2020-05-15 | Hydraulic engineering pipeline inner wall connecting and sealing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010410321.4A CN111677948B (en) | 2020-05-15 | 2020-05-15 | Hydraulic engineering pipeline inner wall connecting and sealing device and method |
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| CN111677948A CN111677948A (en) | 2020-09-18 |
| CN111677948B true CN111677948B (en) | 2021-08-03 |
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| CN202010410321.4A Active CN111677948B (en) | 2020-05-15 | 2020-05-15 | Hydraulic engineering pipeline inner wall connecting and sealing device and method |
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Families Citing this family (3)
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| CN113483184B (en) * | 2021-07-02 | 2022-02-15 | 泰州市华驰不锈钢制品有限公司 | Noise-proof clamp convenient to mount and used for pipeline connection |
| CN113982525B (en) * | 2021-11-05 | 2023-06-16 | 西安力勘石油能源科技有限公司 | Separate-layer fracturing type washable packer and use method thereof |
| CN115031068B (en) * | 2022-07-25 | 2023-06-16 | 浙江工业职业技术学院 | Water supply and drainage pipeline connecting device with anti-seepage structure |
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| KR20140055398A (en) * | 2012-10-31 | 2014-05-09 | (주)폴리텍 | Connection socket of the pipe |
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| CN110107758A (en) * | 2019-05-22 | 2019-08-09 | 许吉界 | A kind of steel flange |
| CN210372523U (en) * | 2019-08-13 | 2020-04-21 | 浙江欧佩亚海洋工程有限公司 | Pipeline plugging device |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140055398A (en) * | 2012-10-31 | 2014-05-09 | (주)폴리텍 | Connection socket of the pipe |
| CN208123683U (en) * | 2017-12-29 | 2018-11-20 | 天津兆顺泰科技有限公司 | A kind of assembling pipe joint of ceramic composite Preparation equipment |
| CN208845960U (en) * | 2018-08-20 | 2019-05-10 | 江苏华展石油机械有限公司 | A kind of abnormity petroleum pipeline plugging device |
| CN208967280U (en) * | 2018-10-18 | 2019-06-11 | 张掖市宏达建材有限责任公司 | A kind of PPR pipe that sealing effect is good |
| CN209100840U (en) * | 2018-11-23 | 2019-07-12 | 重庆渝润新型管业有限公司 | A kind of two flat walls hollow wound pipe leak-free connection device |
| CN110107758A (en) * | 2019-05-22 | 2019-08-09 | 许吉界 | A kind of steel flange |
| CN210372523U (en) * | 2019-08-13 | 2020-04-21 | 浙江欧佩亚海洋工程有限公司 | Pipeline plugging device |
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| CN111677948A (en) | 2020-09-18 |
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