CN110873629B - Pipeline external pressure detection device - Google Patents
Pipeline external pressure detection device Download PDFInfo
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- CN110873629B CN110873629B CN202010044461.4A CN202010044461A CN110873629B CN 110873629 B CN110873629 B CN 110873629B CN 202010044461 A CN202010044461 A CN 202010044461A CN 110873629 B CN110873629 B CN 110873629B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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Abstract
The invention is suitable for the technical field of pipeline detection, and provides a pipeline external pressure detection device, which comprises a sleeve, a fixing device, a detection device and a supporting device, wherein the fixing device comprises a fixing piece and a sealing piece, and the detection device comprises a pressure gauge, a pressure release valve and a pressurizing device; the supporting device comprises supporting rods, a supporting frame, a driving rod, a driven rod and a power piece which are symmetrically arranged, the supporting rods are bent and molded, one side of the driving rod is fixedly connected with the power piece, the driven rod comprises an upper driven rod and a lower driven rod, the upper end and the lower end of a limiting block are respectively movably connected with the end part of the upper driven rod and the end part of the lower driven rod, the other end of the lower driven rod is movably connected below the bending end of the supporting rods, and the supporting frame is provided with a fixing sleeve for; the supporting device is positioned below the sleeve. Therefore, the pipeline airtightness detection device can improve the detection quality of the pipeline airtightness, is convenient to move, can effectively detect pipelines at different positions, and improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of pipeline detection, in particular to an external pipeline pressure detection device.
Background
At present, pipe end welding, welding seams and socket joints of pipelines, particularly leakage water pressure detection of large-diameter pipelines, are mainly carried out by adopting an internal pressurizing method, and pressurizing equipment for detecting the large-diameter pipelines is huge and inconvenient to move, so that inconvenience is brought to pipeline pressure bearing detection of a large-diameter pipeline construction site. When the local pressure resistance index and the leakage condition of the large-caliber pipeline are objectified, the detection experiment difficulty of the existing equipment is high.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a pressure detection device for external use of a pipeline, which can effectively detect the tightness of the pipeline, improve the detection quality, facilitate movement, and reduce the carrying workload of workers.
In order to achieve the purpose, the invention provides a pipeline external pressure detection device which is characterized by comprising a sleeve, a fixing device, a detection device and a supporting device, wherein the fixing device comprises a fixing piece and a sealing piece, two ends of the sleeve are provided with limiting holes matched with the fixing piece, the sealing piece is positioned between the fixing piece and the sleeve, the detection device comprises a pressure gauge, a pressure relief valve and a pressurizing device, the pressure gauge and the pressure relief valve are both positioned on the sleeve, and the pressurizing device is connected with the sleeve through a connecting pipeline; the supporting device comprises supporting rods, a supporting frame, a driving rod, a driven rod and a power part which are symmetrically arranged, the supporting rods are bent and formed, the end parts of the supporting rods are provided with fixed blocks, one side of the driving rod is fixedly connected with the power part, the driving rod is sleeved with a limiting block, the driven rod comprises an upper driven rod and a lower driven rod, the upper end and the lower end of the limiting block are respectively movably connected with the end parts of the upper driven rod and the lower driven rod, the other end of the upper driven rod is movably connected with the supporting frame, the other end of the lower driven rod is movably connected below the bent end of the supporting rods, the supporting frame is provided with a fixing sleeve for accommodating the supporting rods, and; the supporting device is located below the sleeve, and an arc-shaped groove with the diameter smaller than that of the sleeve is formed in the fixing block.
According to the pressure detection device for the external pipeline, the fixing piece is a fixing flange, the sealing piece is a rubber ring, and the section of the rubber ring is trapezoidal.
According to the external pressure detection device for the pipeline, the end part of the sleeve is provided with a flange inclined plane matched with the rubber ring with the trapezoidal section, the fixing flange is provided with a boss matched with the flange inclined plane, and the fixing flange is connected with the sleeve through the fixing bolt.
According to the pressure detection device for the external pipeline, the pressure boosting device is a high-pressure water injection device, the sleeve is provided with the connecting water injection nozzle, and the water injection nozzle is hermetically connected with the connecting pipeline.
According to the pressure detection device for the external pipeline, the supporting rod is arranged in a Z shape, and the bent end of the supporting rod is provided with the inclined edge section.
According to the external pipeline pressure detection device, the anti-skid structure is arranged in the arc-shaped groove and is an anti-skid pattern, an anti-skid bulge or an anti-skid point.
According to the pressure detection device for the external pipeline, two groups of supporting rods, two groups of driven rods and two groups of limiting blocks are arranged and are symmetrically arranged.
According to the pressure detection device for the external pipeline, the driven rod is connected with the support frame and the support rod through the rotating shaft.
According to the pressure detection device for the external pipeline, the support frame is provided with a limiting space, the power part is located in the limiting space, the power part is an air cylinder, and the air cylinder is connected with the support frame through a bolt.
According to the external pipeline pressure detection device, the support frame is sleeved with the shell, the shell is provided with the sliding groove for accommodating the movement of the support rod, the side face of the shell is provided with the control panel, the control panel is connected with the power part through a line, and the bottom of the shell is provided with the self-locking pulley.
The invention provides a pipeline external pressure detection device which is characterized by comprising a sleeve, a fixing device, a detection device and a supporting device, wherein the fixing device comprises a fixing part and a sealing part, two ends of the sleeve are provided with limiting holes matched with the fixing part, the sealing part is positioned between the fixing part and the sleeve, the detection device comprises a pressure gauge, a pressure relief valve and a pressurizing device, the pressure gauge and the pressure relief valve are positioned on the sleeve, the pressurizing device is connected with the sleeve through a connecting pipeline, the pressurizing device is used for realizing effective control over the pressure in the sleeve, further realizing effective detection on the tightness of the pipeline, and improving the detection quality and the detection efficiency; the supporting device comprises a supporting rod, a supporting frame, a driving rod, a driven rod and a power part which are symmetrically arranged, the supporting rod is bent and molded, a fixed block is arranged at the end part of the supporting rod, the power part is fixedly connected to one side of the driving rod, a limiting block is sleeved on the driving rod, the driven rod comprises an upper driven rod and a lower driven rod, the upper end and the lower end of the limiting block are respectively movably connected with the end part of the upper driven rod and the end part of the lower driven rod, the other end of the upper driven rod is movably connected with the supporting frame, the other end of the lower driven rod is movably connected with the lower part of the bent end of the supporting rod, a fixed sleeve for accommodating the supporting rod is arranged on the supporting frame, the supporting rod is movably arranged in the fixed sleeve, the supporting device is utilized to realize effective support of the position of, the mounting efficiency is improved; the supporting device is located below the sleeve, the fixing block is provided with an arc-shaped groove with the diameter smaller than that of the sleeve, the arc-shaped groove is used for effectively fixing the sleeve, the effective fixation of the sleeve is guaranteed, and the firmness of the sleeve is improved. The invention has the beneficial effects that: the sleeve position is effectively limited through the supporting device, the position stability of the sleeve is realized, meanwhile, the sleeve and the fixing device are conveniently and effectively connected, the installation efficiency is improved, and the installation quality is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the support device of the present invention.
Fig. 3 is another structural diagram of the supporting device of the present invention.
Fig. 4 is a schematic structural view of the support frame of the present invention.
Fig. 5 is a schematic structural view of the support rod of the present invention.
In the figure, 1-sleeve pipe, 11-flange slope, 21-fixing piece, 22-sealing piece, 31-pressure gauge, 32-pressure release valve, 33-water injection nozzle, 41-support frame, 411-fixing sleeve, 412-limiting space, 42-support rod, 421-fixing block, 43-driving rod, 441-upper driven rod, 442-lower driven rod, 45-power piece, 46-limiting block, 47-rotating shaft, 5-shell, 51-self-locking pulley and 6-pipeline.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the invention provides a pressure detection device for external use of a pipeline, which is characterized by comprising a sleeve 1, a fixing device, a detection device and a supporting device, wherein the fixing device comprises a fixing part 21 and a sealing part 22, two ends of the sleeve 1 are provided with limiting holes matched with the fixing part 21, the sealing part 22 is positioned between the fixing part 21 and the sleeve 1, the detection device comprises a pressure gauge 31, a pressure relief valve 32 and a pressurizing device, the pressure gauge 31 and the pressure relief valve 32 are both positioned on the sleeve 1, the pressurizing device is connected with the sleeve 1 through a connecting pipeline, and the pressurizing device is used for realizing effective control of the pressure in the sleeve 1, so that effective detection of the tightness of the pipeline 6 is realized, and the detection quality and the detection efficiency are improved; the supporting device comprises a supporting rod 42, a supporting frame 41, a driving rod 43, a driven rod and a power part 45 which are symmetrically arranged, the supporting rod 42 is bent and formed, a fixing block 421 is arranged at the end part of the supporting rod 42, the power part 45 is fixedly connected to one side of the driving rod 43, a limiting block 46 is sleeved on the driving rod 43, the driven rod comprises an upper driven rod 441 and a lower driven rod 442, the upper end and the lower end of the limiting block 46 are respectively movably connected with the end part of the upper driven rod 441 and the end part of the lower driven rod 442, the other end of the upper driven rod 441 is movably connected with the supporting frame 41, the other end of the lower driven rod 442 is movably connected with the bent end of the supporting rod 42, a fixing sleeve for accommodating the supporting rod 42 is arranged on the supporting frame 41, the supporting rod 42 is movable in the fixing sleeve 411, the supporting device is utilized to realize effective support of, meanwhile, the sleeve 1 and the fixing device can be effectively fixed, and the mounting efficiency is improved; the supporting device is located below the sleeve 1, the arc-shaped groove with the diameter smaller than that of the sleeve 1 is arranged on the fixing block 421, the sleeve 1 is effectively fixed by the arc-shaped groove, the sleeve 1 is effectively fixed, and the firmness of the sleeve 1 is improved.
Preferably, the fixing member 21 of the present invention is a fixing flange, the sealing member 22 is a rubber ring, and the cross section of the rubber ring is trapezoidal, so that the sealing property between the casing 1 and the fixing member 21 is enhanced by the rubber ring, thereby ensuring effective detection of the internal pressure of the casing 1, and improving the working efficiency and the detection quality.
In addition, the end part of the sleeve 1 is provided with a flange inclined plane 11 matched with the rubber ring with the trapezoidal section, the fixing flange is provided with a boss matched with the flange inclined plane 11, the fixing flange is connected with the sleeve 1 through a fixing bolt, and the effective limitation on the position of the rubber ring is realized through the flange inclined plane 11 and the boss on the fixing flange, so that the sealing performance of the rubber ring between the sleeve 1 and the fixing part 21 is ensured, and the detection accuracy of the sealing performance of the pipeline 6 is improved.
Further, the pressurizing device is a high-pressure water injection device, the sleeve 1 is provided with the connecting water injection nozzle 33, the water injection nozzle 33 is hermetically connected with the connecting pipeline, the inside of the sleeve 1 is pressurized through the high-pressure water injection device, the tightness of the pipeline 6 is detected by using stable water pressure, and the detection accuracy is improved.
Preferably, the anti-skid structure is arranged in the arc-shaped groove, the anti-skid structure is anti-skid grains, anti-skid protrusions or anti-skid points, the anti-skid structure is used for enhancing friction force, effective limitation on the position of the sleeve 1 is guaranteed, the stability of the sleeve 1 in the detection process is improved, meanwhile, effective connection between the sleeve 1 and the fixing part 21 is guaranteed, the installation time is shortened, and the working efficiency is improved.
In the implementation process of the invention: to the pipeline 6 that has processed, need detect pipeline 6 leakproofness before the delivery or transport, examine time measuring pipeline 6, at first cup joint sleeve pipe 1 and fixing device from 6 one ends of pipeline and remove to waiting of pipeline 6 and wait to detect the position, then step up 6 both ends of pipeline, place strutting arrangement in sleeve pipe 1 below, utilize strutting arrangement to prescribe a limit to sleeve pipe 1 position, it is located the inside central point of sleeve pipe 1 to guarantee to wait to detect pipeline 6, be convenient for sleeve pipe 1 and fixing device carry out effective high-speed joint, prevent in the connection process, because pipeline 6 and the inside contact of sleeve pipe 1 that awaits measuring, influence the installation effectiveness. The fixing device and the sleeve 1 are arranged in sequence, namely a fixing piece 21, a sealing piece 22, the sleeve 1, the sealing piece 22 and the fixing piece 21, and after the sleeve 1 is fixed and supported by the supporting device, the fixing piece 21 and the sleeve 1 are connected. Because the fixing part 21 is a fixing flange, and the fixing flange is provided with a boss, the end part of the sleeve 1 is provided with the inclined flange inclined plane 11, and the fixing part 21 is connected with the sleeve 1 through the fixing bolt, when the fixing part 21 and the end part of the sleeve 1 are connected by the fixing bolt, the sealing part 22 positioned between the sleeve 1 and the fixing part 21 is extruded, and further, the gap between the sleeve 1 and the fixing part 21 is fully filled by the sealing part 22, so that the sealing performance of the accommodating space formed by the inner part of the sleeve 1 and the outer side of the pipeline 6 is ensured.
Carry out increased pressure to sleeve pipe 1 inside through supercharging device, because supercharging device is high pressure water injection device, carry out the mode that the pressure boost passes through the water injection pressure boost to sleeve pipe 1, what of utilization water injection volume makes and has certain pressure between sleeve pipe 1 and the pipeline 6, utilize manometer 31 to observe the detection to this pressure, avoid the water yield to pour into too much damage that causes pipeline 6, when pouring into certain numerical value with water injection pressure, stop the water injection, then after standing for a period, whether the numerical value of observing manometer 31 changes to some extent, if change and explain that this pipeline 6 leakproofness has the problem, if there is no change, it is good to explain this pipeline 6 leakproofness, with this detection to realize pipeline 6 leakproofness. Because sleeve pipe 1 volume is less relatively, has cup jointed shell 5 on the support frame 41, just be equipped with the spout that holds bracing piece 42 and remove on the shell 5, the 5 sides of shell are equipped with control panel, just control panel line connection power 45, 5 bottoms of shell are equipped with auto-lock pulley 51, can be convenient for to the effective removal of this detection device position, and then reduce staff's intensity of labour, improve work quality. The high-pressure water injection device adopted in the method is the prior art, and the composition structure and the working principle of the high-pressure water injection device are not described in detail.
As shown in fig. 2 to 5, when the support device is used to limit the position of the casing 1, two sets of support rods 42, driven rods and limit blocks 46 are provided, and are symmetrically arranged with respect to each other, the support frame 41 is provided with a limit space 412, the power member 45 is located in the limit space 412, the power member 45 is a cylinder, the cylinder is connected to the support frame 41 through a bolt, the driving rod 43 is pushed by the extension and contraction of the power member 45, the driving rod 43 is moved, during the movement of the driving rod 43, because the limit block 46 is sleeved on the driving rod 43, the upper and lower ends of the limit block 46 are respectively connected to the driven rod 441 and the lower driven rod 442 through the shaft, and the driven rod is connected to the support frame 41 and the support rods 42 through the rotating shaft 47, during the movement of the driving rod 43, the limit block 46 is driven to move, because the length of the driven rod is not changed, during the movement of, can realize simultaneously along the long limit direction of drive lever 43 and remove under the effect of driven lever, and then stopper 46 is at the removal in-process, driven lever 442 realizes removing under can driving, and then utilize driven lever 442 to drive bracing piece 42 down and realize opening and shutting the removal, bracing piece 42 is the setting of Z type, and bracing piece 42 end of buckling has the bevel edge section, utilize the fixed cover 411 of cup jointing bracing piece 42 on the support frame 41 to inject the position of bracing piece 42 simultaneously, guarantee that bracing piece 42 can only realize removing along the through-hole direction of fixed cover 411.
For example, when the power member 45 extends, the driving rod 43 is pushed to ascend, the driving rod 43 moves toward the middle of the driving rod 43 during the ascending process, the two limiting blocks 46 are symmetrically arranged, that is, the distance between the two limiting blocks 46 is shortened, and when the distance between the two limiting blocks 46 is shortened, the two lower driven rods 442 connected with the driving rod can be driven to move the same, that is, the distance between the two lower driven rods 442 is also shortened, so as to ensure that the distance between the two support rods 42 movably connected with the two lower driven rods 442 is also shortened, thereby clamping the casing 1 by the two support rods 42 is realized, in the clamping process, since the support rods 42 are provided with the arc-shaped grooves, the casing 1 is limited by the arc-shaped grooves, and the positional stability of the casing 1 is ensured. The power member 45 moves reversely, that is, the distance between the two support rods 42 is adjusted reversely, so that the distance between the two support rods is increased, and the sleeve 1 is loosened. The power member 45 is a cylinder, and the control of the expansion and contraction of the cylinder by using a control system belongs to the prior art, and the working principle of the control system is not described in detail herein and can be realized by using the prior art.
In summary, the invention provides a device for detecting pressure outside a pipeline, which is characterized by comprising a sleeve, a fixing device, a detecting device and a supporting device, wherein the fixing device comprises a fixing part and a sealing part, two ends of the sleeve are provided with limiting holes matched with the fixing part, the sealing part is positioned between the fixing part and the sleeve, the detecting device comprises a pressure gauge, a pressure relief valve and a pressurizing device, the pressure gauge and the pressure relief valve are positioned on the sleeve, the pressurizing device is connected with the sleeve through a connecting pipeline, the pressurizing device is used for realizing effective control of pressure in the sleeve, further realizing effective detection of the tightness of the pipeline, and improving the detection quality and the detection efficiency; the supporting device comprises a supporting rod, a supporting frame, a driving rod, a driven rod and a power part which are symmetrically arranged, the supporting rod is bent and molded, a fixed block is arranged at the end part of the supporting rod, the power part is fixedly connected to one side of the driving rod, a limiting block is sleeved on the driving rod, the driven rod comprises an upper driven rod and a lower driven rod, the upper end and the lower end of the limiting block are respectively movably connected with the end part of the upper driven rod and the end part of the lower driven rod, the other end of the upper driven rod is movably connected with the supporting frame, the other end of the lower driven rod is movably connected with the lower part of the bent end of the supporting rod, a fixed sleeve for accommodating the supporting rod is arranged on the supporting frame, the supporting rod is movably arranged in the fixed sleeve, the supporting device is utilized to realize effective support of the position of, the mounting efficiency is improved; the supporting device is located below the sleeve, the fixing block is provided with an arc-shaped groove with the diameter smaller than that of the sleeve, the arc-shaped groove is used for effectively fixing the sleeve, the effective fixation of the sleeve is guaranteed, and the firmness of the sleeve is improved. The invention has the beneficial effects that: the sleeve position is effectively limited through the supporting device, the position stability of the sleeve is realized, meanwhile, the sleeve and the fixing device are conveniently and effectively connected, the installation efficiency is improved, and the installation quality is improved.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The pipeline external pressure detection device is characterized by comprising a sleeve, a fixing device, a detection device and a supporting device, wherein the fixing device comprises a fixing part and a sealing part, two ends of the sleeve are provided with limiting holes matched with the fixing part, the sealing part is positioned between the fixing part and the sleeve, the detection device comprises a pressure gauge, a pressure relief valve and a pressurizing device, the pressure gauge and the pressure relief valve are both positioned on the sleeve, and the pressurizing device is connected with the sleeve through a connecting pipeline;
the supporting device comprises a supporting rod, a supporting frame, a driving rod, a driven rod and a power part, wherein the supporting rod is bent and formed, a fixing block is arranged at the end part of the supporting rod, the power part is fixedly connected to one side of the driving rod, a limiting block is sleeved on the driving rod, the two supporting rods, the two driven rods and the limiting block are symmetrically arranged with each other, the driven rod comprises an upper driven rod and a lower driven rod, the upper end and the lower end of the limiting block are respectively movably connected with the end part of the upper driven rod and the end part of the lower driven rod, the other end of the upper driven rod is movably connected with the supporting frame, the other end of the lower driven rod is movably connected below the bending end of the supporting rod, a fixing sleeve for accommodating the;
the supporting device is located below the sleeve, and an arc-shaped groove with the diameter smaller than that of the sleeve is formed in the fixing block.
2. The apparatus as claimed in claim 1, wherein the fixing member is a fixing flange, the sealing member is a rubber ring, and the rubber ring has a trapezoidal cross-section.
3. The device for detecting the pressure outside the pipeline as claimed in claim 2, wherein the end of the sleeve is provided with a flange slope surface matching with the rubber ring with the trapezoidal section, and the fixing flange is provided with a boss matching with the flange slope surface and is connected with the sleeve by a fixing bolt.
4. The device for detecting the pressure of the outside of the pipeline according to claim 1, wherein the pressure increasing device is a high-pressure water injection device, the sleeve is provided with a connecting water injection nozzle, and the connecting pipeline is hermetically connected with the water injection nozzle.
5. The device as claimed in claim 1, wherein the supporting rod is Z-shaped, and the bent end of the supporting rod has a bevel section.
6. The device for detecting the pressure of the outside of the pipeline according to claim 1, wherein an anti-slip structure is arranged in the arc-shaped groove, and the anti-slip structure is an anti-slip pattern, an anti-slip bulge or an anti-slip point.
7. The apparatus of claim 1, wherein the driven rod is connected to the supporting frame and the supporting rod via a rotating shaft.
8. The device for detecting the pressure of the pipeline outside as claimed in claim 1, wherein a spacing space is provided on the supporting frame, the power member is located in the spacing space, the power member is a cylinder, and the cylinder is connected with the supporting frame through a bolt.
9. The external pipeline pressure detection device as recited in claim 1, wherein the supporting frame is sleeved with a housing, the housing is provided with a sliding groove for accommodating the movement of the supporting rod, a control panel is arranged on a side surface of the housing, the control panel is connected with the power member by a wire, and a self-locking pulley is arranged at the bottom of the housing.
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| CN202010044461.4A CN110873629B (en) | 2020-01-16 | 2020-01-16 | Pipeline external pressure detection device |
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| CN202010044461.4A CN110873629B (en) | 2020-01-16 | 2020-01-16 | Pipeline external pressure detection device |
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| CN110873629A CN110873629A (en) | 2020-03-10 |
| CN110873629B true CN110873629B (en) | 2020-05-22 |
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| CN113740361B (en) * | 2020-05-29 | 2023-05-23 | 清华大学 | Detection channel, channel assembly and CT detection device |
| CN112038996B (en) * | 2020-08-25 | 2022-01-07 | 广船国际有限公司 | Water retaining sealing device for cable protection pipe and sealing detection method |
| CN112165055B (en) * | 2020-09-09 | 2022-05-10 | 中船黄埔文冲船舶有限公司 | Cable cabin-penetrating protection device and manufacturing method |
| CN112165053A (en) * | 2020-09-09 | 2021-01-01 | 中船黄埔文冲船舶有限公司 | Sealing structure for cable |
| CN112903193B (en) * | 2021-04-02 | 2022-08-02 | 蔡占河 | Portable power plant pressure pipeline detection device |
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| CN209783848U (en) * | 2019-04-02 | 2019-12-13 | 张家港市弘强制管有限公司 | Pressure pipe welding mouth detection device |
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