CN109882516B - Hollow universal joint for pipeline detector and connector thereof - Google Patents
Hollow universal joint for pipeline detector and connector thereof Download PDFInfo
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- CN109882516B CN109882516B CN201910276497.2A CN201910276497A CN109882516B CN 109882516 B CN109882516 B CN 109882516B CN 201910276497 A CN201910276497 A CN 201910276497A CN 109882516 B CN109882516 B CN 109882516B
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- 239000000523 sample Substances 0.000 claims description 30
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 8
- 238000004804 winding Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention discloses a hollow universal joint for a pipeline detector and a connector thereof, wherein the universal joint is formed by symmetrically arranging two universal units, each universal unit is formed by a connecting block and flanges which are rotationally connected at two ends of the connecting block through a rotating shaft, so that the universal joint is formed by two universal rotating structures (universal units) when being watched by a macro; each universal unit is internally provided with two rotating structures for micro-viewing, so that the rotating angle of the universal joint is greatly improved, and the gesture requirement of the pipeline detector when the pipeline detector passes through various elbows is met; the connector for the pipeline detector adopts the hollow universal joint, and the line collector is fixedly arranged in the hollow universal joint, so that the protection of the line collector and a cable is realized, and the fault rate is reduced; the hollow universal joint and the connector have the advantages of simple structure, reasonable design, convenient use, large rotation angle, strong applicability, capability of protecting cables and the like.
Description
Technical Field
The invention discloses the technical field of equipment for pipeline detection, in particular to a hollow universal joint for a pipeline detector and a connector thereof.
Background
The pipeline is buried underground and on the seabed, and after long-time operation, the pipeline is damaged or corroded due to geological damage, corrosion, self defects and the like, and the inner wall of the pipeline is possibly damaged or corroded, so that the operation safety of the pipeline is affected, and the pipeline is required to be periodically detected internally. The detection equipment in the pipeline generally comprises a driving joint, an acquisition probe, a mileage wheel, a storage system, a power supply and other components. For small-caliber equipment, the functional components are often required to be designed into a multi-section structure due to space limitation, and the sections are connected through universal joints.
At present, the universal joints for realizing the connection of all the joints in the detection equipment are universal joints, the rotation angle range is small, the maximum rotation angle is only 30 degrees, and when the detector passes through the elbow between the pipelines, the problem of clamping stagnation often exists due to the limitation of the rotation angle, so that the gesture requirement of passing through various elbows in the pipelines can not be met.
In addition, the universal joint needs to meet the communication connection between the power saving devices while ensuring the mechanical connection of the joints in the detector. The number of detection probes in the existing pipeline detector is more, the number of detection probes in the 8, 10 and 12 inch small detector is usually more than 20, each probe needs to be connected to the memory through a multi-core cable, but all detection probes cannot be simultaneously inserted into the memory due to the limitation of the size of the detector, so that the number of the detection probes is reduced, a line collector is required to be arranged between the probes and the memory, and signals of the detection probes are integrated and then uniformly transmitted to the memory. However, since the existing universal joint is of a solid structure, the wire collector for signal collection can only be fixed on the outer side of the universal joint and is positioned outside the detector cabin, and when the detector detects and operates in a pipeline, the phenomena of cable winding and wire collector falling or damage caused by collision often occur, so that the fault rate of the detector is high.
Therefore, how to develop a novel universal joint to solve the above problems is a urgent problem to be solved.
Disclosure of Invention
In view of the above, the present disclosure provides a hollow universal joint for a pipeline detector and a connector thereof, so as to at least solve the problems of the existing universal joint for a detector that the rotation angle is small, the communication cable cannot be protected, and thus, the clamping stagnation and the failure are easy to occur.
In one aspect, the present invention provides a hollow universal joint for a pipe detector, the hollow universal joint comprising: two universal units 1 and a connecting sleeve 2 symmetrically connecting the two universal units 1;
each of the universal units 1 includes: a connecting block 11, two flanges 12 and four rotating shafts 13;
the inside of the connecting block 11 is provided with a channel penetrating through two ends, a first shaft hole 111 is coaxially arranged on the opposite side wall of one end of the connecting block 11, a second shaft hole 112 is coaxially arranged on the opposite side wall of the other end of the connecting block 11, and the axes of the two second shaft holes 112 are perpendicular to the axes of the two first shaft holes 111;
each of the flanges 12 includes: the flange plate 121, two connecting plates 122 extending outwards along the axial direction are symmetrically arranged on the flange plate 121, and a third shaft hole 1221 is formed in each connecting plate 122;
the two flanges 12 are sleeved outside the two ends of the connecting block 11 through the two connecting plates 122 respectively, the positions of the third shaft holes 1221 in one end flange 12 and the first shaft holes 111 in the connecting block 11 are in one-to-one correspondence, and the positions of the third shaft holes 1221 in the other end flange 12 and the second shaft holes 112 in the connecting block 11 are in one-to-one correspondence;
two rotating shafts 13 are respectively installed in the first shaft hole 111 and the third shaft hole 1221 corresponding to the position in the connecting block 11, and the other two rotating shafts 13 are respectively installed in the second shaft hole 112 and the third shaft hole 1221 corresponding to the position in the connecting block 11, so that the connecting block 11 is rotationally connected with flanges 12 at two ends;
the connecting sleeve 2 is positioned between the two universal units 1, one end of the connecting sleeve 2 is fixedly connected with a flange 12 in one universal unit 1, and the other end of the connecting sleeve 2 is fixedly connected with a flange 12 in the other universal unit 1.
Preferably, the flange 121 in each flange 12 is formed by splicing two flange units 1211, and a connecting plate 122 extending outwards along the axial direction is disposed at the center of each flange unit 1221.
Further preferably, four through holes 12111 are uniformly distributed on each flange unit 1211.
Further preferably, a shoulder 131 extending radially outwards is disposed on a side wall of each rotating shaft 13 along a circumferential direction, and the shoulder 131 is clamped between the connecting block 11 and the connecting plate 122 of the flange 12.
Further preferably, counter bores are provided on the outer sides of the first shaft hole 111 and the second shaft hole 112 at the two ends of the connecting block 11, and the aperture of the counter bores is matched with the outer diameter of the shaft shoulder 131.
Further preferably, the connecting block 11 is an octagonal block cylinder, and has two pairs of opposite side walls, wherein one end of one pair of opposite side walls is coaxially provided with a first shaft hole 111, the other end is provided with a recess 113 recessed inwards along the axial direction, one end of the other pair of opposite side walls is provided with a recess 114 recessed inwards along the axial direction, and the other end is coaxially provided with a second shaft hole 112.
In another aspect, the present invention provides a connector for a pipe detector, the connector comprising: a universal joint A, a wire collector B, a bus cable C and a plurality of probe cables D;
the universal joint A is any hollow universal joint;
the wire collector B is positioned in the universal joint A and is fixedly connected with the inner wall of the connecting sleeve 2 in the universal joint A;
one end of the bus cable C penetrates into the universal joint A and is connected with the output end of the bus collector B, and the other end of the bus cable C is provided with a signal main joint C1;
the probe cables D are arranged in parallel, one end of each probe cable D penetrates into the universal joint A and is connected with the input end of the wire collector B, and the other end of each probe cable D is provided with a probe plug D1.
Preferably, the signal total connector C1 and the probe plug D1 are both pressure-resistant cable connectors.
The hollow universal joint for the pipeline detector is formed by symmetrically arranging two universal units, wherein each universal unit is formed by a connecting block and flanges which are rotationally connected to two ends of the connecting block through a rotating shaft, so that the universal joint is formed by two universal rotating structures (universal units) for macro observation; in micro-viewing, two rotating structures are arranged in each universal unit, so that the rotating angle of the universal joint is greatly improved, the gesture requirement of a pipeline detector when the pipeline detector passes through various elbows is met, and in order to meet the requirement of wiring communication, the universal joint is designed into a hollow structure for the first time, and the protection of a cable is realized.
The hollow universal joint is adopted in the connector for the pipeline detector, and the line collector and the cable are protected by fixedly mounting the line collector in the hollow universal joint, so that the fault rate is reduced.
The hollow universal joint for the pipeline detector has the advantages of simple structure, reasonable design, convenience in use, large rotation angle, strong applicability, capability of protecting cables and the like.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as disclosed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic view of a hollow universal joint for a pipeline detector according to an embodiment of the present disclosure;
fig. 2 is a schematic structural view of a flange in a hollow universal joint for a pipeline detector according to an embodiment of the present disclosure;
fig. 3 is a schematic structural view of a flange unit in a hollow universal joint for a pipeline detector according to an embodiment of the present disclosure;
FIG. 4 is a front view of a connection block in a hollow universal joint for a pipe detector according to an embodiment of the present disclosure;
FIG. 5 is a left side view of a connection block in a hollow universal joint for a pipe detector according to an embodiment of the present disclosure;
FIG. 6 is a right side view of a connection block in a hollow universal joint for a pipe detector according to an embodiment of the present disclosure;
fig. 7 is a schematic structural view of a rotating shaft in a hollow universal joint for a pipeline detector according to an embodiment of the present disclosure;
FIG. 8 is a schematic view of a prior art connector for a pipe detector;
fig. 9 is a schematic structural view of a connector for a pipeline detector according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus consistent with aspects of the invention as detailed in the accompanying claims.
In order to solve the problems that the existing hollow universal joint for the pipeline detector has small rotation angle, so that the gesture requirements of various elbows in the pipeline cannot be met, clamping stagnation is easy to occur, and the like. In view of this, this embodiment provides a novel gimbal structure to be specially adapted to a pipeline detector, and because the pipeline detector needs to perform data transmission through a cable, this embodiment proposes to design the gimbal as a hollow structure for the first time based on the applicability of this particular device.
Specifically, referring to fig. 1, the universal joint is in a symmetrical structure as a whole, and is composed of two universal units 1 and one connecting sleeve 2, each universal unit 1 is composed of a connecting block 11, two flanges 12 and four rotating shafts 13, wherein channels penetrating through two ends are arranged in the connecting block 11, first shaft holes 111 are coaxially arranged on opposite side walls of one end of the connecting block 11 respectively, second shaft holes 112 are coaxially arranged on opposite side walls of the other end of the connecting block 11 respectively, and the axes of the two second shaft holes 112 are perpendicular to the axes of the two first shaft holes 111. Referring to fig. 2, each flange 12 includes a flange 121, two connecting plates 122 extending outwards along an axial direction are symmetrically disposed on the flange 121, a third shaft hole 1221 is disposed on each connecting plate 122, referring to fig. 1, the two flanges 12 are sleeved outside two ends of the connecting block 11 through the two connecting plates 122, the third shaft hole 1221 in one end flange 12 corresponds to the first shaft hole 111 in the connecting block 11 one by one, the third shaft hole 1221 in the other end flange 12 corresponds to the second shaft hole 112 in the connecting block 11 one by one, two rotating shafts 13 in four rotating shafts are respectively disposed in the first shaft hole 111 in the connecting block 11 and the third shaft hole 1221 corresponding to the position, the other two rotating shafts 13 are respectively disposed in the second shaft hole 112 in the connecting block 11 and the third shaft hole 1221 corresponding to the position, the connecting block 11 is rotationally connected with the flanges 12 at two ends, screw holes are disposed on end surfaces of the two ends of the connecting sleeve 2, the connecting sleeve 2 is located between the two universal units 1, one end of the connecting sleeve 2 is fixedly connected with the flange 12 in one universal unit 1 through a bolt, and the other end of the connecting sleeve 2 is fixedly connected with the flange 12 in the other universal unit 1 through the bolt.
When the universal joint in the embodiment is used, the universal joint is fixedly connected with two functional joints in the detector through flanges at two ends respectively, when the detector runs in a pipeline, the universal joint runs along with the detector, when the detector runs through an elbow in the pipeline, as the universal joint is formed by symmetrically connecting two universal units through connecting sleeves, each universal unit is formed by connecting blocks and flanges which are rotationally connected at two ends of the connecting blocks through rotating shafts, the rotating shafts at two ends of the connecting blocks are vertically arranged, the rotating angle of the universal joint can be greatly improved, the 30-degree rotating angle of the universal joint can be enlarged to 60 degrees, and bidirectional rotation can be realized, so that the gesture requirement of the pipeline detector in the pipeline when the pipeline passes through various elbows is met, and the clamping stagnation phenomenon is avoided. In addition, each component of the universal joint in the above embodiment is hollow to form a hollow structure of the universal joint, and when in use, the communication cable connected with each functional joint in the detector can be arranged in the universal joint, so that the cable winding is avoided, and the protection of the communication cable is realized.
In order to facilitate the installation and the disassembly of the hollow universal joint, as an improvement of the technical scheme, referring to fig. 2 and 3, a flange 121 in a flange 12 is designed to be formed by splicing two flange units 1211, and a connecting plate 122 extending outwards along the axial direction is arranged in the center of each flange unit 1221; through the split structure design of the flange plate, the flange becomes a split flange, and when the universal joint is required to be disassembled, the whole universal joint can be taken down only by disassembling one flange plate unit in one side of the flange plate, so that the front section and the rear section of the detector are separated.
The flange plate is used as the connection of the front section and the rear section of the detector, and each flange plate unit 1211 can realize the firmness of connection by only arranging four through holes 12111, and is convenient to install.
In order to simplify the structure of the universal joint, as an improvement of the technical scheme, referring to fig. 7, a shoulder 131 extending outwards along the radial direction is arranged on the side wall of the rotating shaft 13 along the circumferential direction, and when the universal joint is installed, the shoulder 131 is clamped between the connecting block 11 and the connecting plate 122 of the flange 12, so that the axial limit of the rotating shaft is realized, the running is prevented, the unexpected falling-out of the rotating shaft is avoided, the structure of the universal joint can be simplified through the design of the shoulder, and any fixing device is not required when the rotating shaft is installed.
As the cooperation of shaft shoulder in the pivot, as the improvement of technical scheme, all be provided with the counter bore in the outside of connecting block 11 both ends first shaft hole 111 and second shaft hole 112, and the aperture of counter bore matches with the external diameter of shaft shoulder 131, and during the installation, the shaft shoulder of pivot can be located this counter bore just, avoids having great space between connecting block and the flange because the existence of shaft shoulder.
The above-mentioned universal joint is middle connecting block can select various structures, this scheme provides the concrete structure of a connecting block, see fig. 4, fig. 5 and fig. 6, this connecting block 11 is the octagonal block barrel, have two pairs of opposite lateral walls, wherein, the one end coaxial arrangement of a pair of opposite lateral walls is first shaft hole 111, the other end tip is provided with along the recess 113 of axial inwards sunken, the one end tip of another pair of opposite lateral walls is provided with along the recess 114 of axial inwards sunken, the other end coaxial arrangement is second shaft hole 112, set up the connecting block into the octagonal structure on the one hand, on the other hand can reduce the existence of 90 closed angles, avoid colliding with the damage, the design of recess is mainly in order to reduce the whole weight of universal joint, because detector and universal joint are supplied with power by the power in the pipeline all, through reducing the weight of universal joint, can reduce the power consumption, reach energy-conserving purpose.
The present embodiment provides a connector for a pipeline detector, see fig. 8 for an existing connector, where the universal joint a adopted in the connector is an existing universal joint, and because the interior is of a solid structure, the wire collector B, the bus cable C and the probe cable D are all disposed outside the universal joint, and when the connector communicates with the detector and runs in the pipeline together, the cable winding is easy to occur, or the wire collector accidentally falls, and the problems such as collision damage occur. Therefore, referring to fig. 9, in the present embodiment, the connector is designed to be composed of a universal joint a, a wire collector B, a bus cable C and a plurality of probe cables D, wherein the universal joint a is a hollow universal joint provided in the above embodiment, since the universal joint a is of a hollow structure, the wire collector B can be disposed inside the universal joint a and fixedly connected with the inner wall of the connecting sleeve 2 in the universal joint a, one end of the bus cable C penetrates into the universal joint a, is connected with the output end of the wire collector B, the other end is provided with a signal total joint C1, the plurality of probe cables D are arranged in parallel, one end of each probe cable D penetrates into the universal joint a, is connected with the input end of the wire collector B, and the other end is provided with a probe plug D1; through the structural design of the connector, the internal space of the universal joint can be fully utilized, a good protection effect is achieved on the cable and the wire collector, the safety of the detector is improved, and the failure rate is reduced.
When the connector in the scheme is used, the probe plug of the probe cable is inserted into the corresponding probe, the bus connector is connected into the memory, and then the flanges at the two ends of the universal joint are respectively and fixedly mechanically connected with the corresponding functional joint, so that the cable is completely wrapped in the universal joint
In order to facilitate the connection of the connector with the probe and the memory, as an improvement of the technical scheme, the signal main connector C1 and the probe plug D1 are designed as pressure-resistant cable connectors.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (3)
1. A hollow universal joint for a pipe detector, comprising: the connecting sleeve (2) symmetrically connects the two universal units (1);
each of the universal units (1) comprises: the connecting block (11), two flanges (12) and four rotating shafts (13);
the connecting block (11) is internally provided with a channel penetrating through two ends, one end opposite side wall of the connecting block (11) is respectively and coaxially provided with a first shaft hole (111), the other end opposite side wall of the connecting block (11) is respectively and coaxially provided with a second shaft hole (112), and the axes of the two second shaft holes (112) are perpendicular to the axes of the two first shaft holes (111);
each of the flanges (12) comprises: the flange plate (121), two connecting plates (122) extending outwards along the axial direction are symmetrically arranged on the flange plate (121), and a third shaft hole (1221) is formed in each connecting plate (122);
the two flanges (12) are sleeved outside the two ends of the connecting block (11) through the two connecting plates (122), the positions of the third shaft holes (1221) in one end flange (12) and the positions of the first shaft holes (111) in the connecting block (11) are in one-to-one correspondence, and the positions of the third shaft holes (1221) in the other end flange (12) and the positions of the second shaft holes (112) in the connecting block (11) are in one-to-one correspondence;
two rotating shafts (13) are respectively arranged in a first shaft hole (111) and a third shaft hole (1221) corresponding to the position in the connecting block (11), and the other two rotating shafts (13) are respectively arranged in a second shaft hole (112) and a third shaft hole (1221) corresponding to the position in the connecting block (11) to rotationally connect the connecting block (11) with flanges (12) at two ends;
the connecting sleeve (2) is positioned between the two universal units (1), one end of the connecting sleeve (2) is fixedly connected with the flange (12) in one universal unit (1) on one side, and the other end of the connecting sleeve is fixedly connected with the flange (12) in the universal unit (1) on the other side;
the hollow universal joint for the pipeline detector is characterized in that a flange plate (121) in each flange (12) is formed by splicing two flange plate units (1211), and a connecting plate (122) extending outwards along the axial direction is arranged in the center of each flange plate unit (1211);
the hollow universal joint for the pipeline detector is characterized in that four through holes (12111) are uniformly distributed on each flange plate unit (1211);
the hollow universal joint for the pipeline detector is characterized in that a shoulder (131) extending outwards along the radial direction is arranged on the side wall of each rotating shaft (13) along the circumferential direction, and the shoulder (131) is clamped between the connecting block (11) and the connecting plate (122) of the flange (12);
the hollow universal joint for the pipeline detector is characterized in that counter bores are formed in the outer sides of a first shaft hole (111) and a second shaft hole (112) at two ends of the connecting block (11), and the aperture of each counter bore is matched with the outer diameter of the shaft shoulder (131);
the hollow universal joint for the pipeline detector is characterized in that the connecting block (11) is an octagonal block cylinder body and is provided with two pairs of opposite side walls, one end of one pair of opposite side walls is coaxially provided with a first shaft hole (111), the end part of the other end is provided with a groove (113) recessed inwards along the axial direction, the end part of one end of the other pair of opposite side walls is provided with a groove (114) recessed inwards along the axial direction, and the other end is coaxially provided with a second shaft hole (112).
2. A connector for a pipe detector, comprising: a gimbal (A), a wire collector (B), a bus cable (C) and a plurality of probe cables (D);
the universal joint (a) is the hollow universal joint of claim 1;
the wire collector (B) is positioned in the universal joint (A) and is fixedly connected with the inner wall of the connecting sleeve (2) in the universal joint (A);
one end of the bus cable (C) penetrates into the universal joint (A) and is connected with the output end of the wire collector (B), and the other end of the bus cable is provided with a signal main joint (C1);
the plurality of probe cables (D) are arranged in parallel, one end of each probe cable (D) penetrates into the universal joint (A) and is connected with the input end of the wire collector (B), and the other end of each probe cable is provided with a probe plug (D1).
3. The connector for a pipe detector according to claim 2, wherein the signal header connector (C1) and the probe plug (D1) are both pressure-resistant cable connectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276497.2A CN109882516B (en) | 2019-04-08 | 2019-04-08 | Hollow universal joint for pipeline detector and connector thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276497.2A CN109882516B (en) | 2019-04-08 | 2019-04-08 | Hollow universal joint for pipeline detector and connector thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109882516A CN109882516A (en) | 2019-06-14 |
| CN109882516B true CN109882516B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910276497.2A Active CN109882516B (en) | 2019-04-08 | 2019-04-08 | Hollow universal joint for pipeline detector and connector thereof |
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| Country | Link |
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| CN (1) | CN109882516B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786329A (en) * | 2020-07-13 | 2020-10-16 | 四川恩帝奕科技有限公司 | Hollow universal joint for pipeline detector and connector thereof |
| CN114630572B (en) * | 2022-05-12 | 2022-10-21 | 之江实验室 | Fairing device with quick-release structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101103224A (en) * | 2004-11-17 | 2008-01-09 | Tdw离岸服务公司 | An articulated assembly for pipelines and a joint device |
| CN103591160A (en) * | 2013-11-23 | 2014-02-19 | 清华大学 | Oil and gas pipeline defect internal detector universal joint |
| CN204458887U (en) * | 2014-12-22 | 2015-07-08 | 中国石油天然气集团公司 | A kind of pipe detector universal joint |
| CN209856252U (en) * | 2019-04-08 | 2019-12-27 | 沈阳仪表科学研究院有限公司 | Hollow universal joint for pipeline detector and connector thereof |
-
2019
- 2019-04-08 CN CN201910276497.2A patent/CN109882516B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101103224A (en) * | 2004-11-17 | 2008-01-09 | Tdw离岸服务公司 | An articulated assembly for pipelines and a joint device |
| CN103591160A (en) * | 2013-11-23 | 2014-02-19 | 清华大学 | Oil and gas pipeline defect internal detector universal joint |
| CN204458887U (en) * | 2014-12-22 | 2015-07-08 | 中国石油天然气集团公司 | A kind of pipe detector universal joint |
| CN209856252U (en) * | 2019-04-08 | 2019-12-27 | 沈阳仪表科学研究院有限公司 | Hollow universal joint for pipeline detector and connector thereof |
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| CN109882516A (en) | 2019-06-14 |
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