CN112255082A - Pipeline pressure bursting test and protection device and operation method thereof - Google Patents
Pipeline pressure bursting test and protection device and operation method thereof Download PDFInfo
- Publication number
- CN112255082A CN112255082A CN202011055988.3A CN202011055988A CN112255082A CN 112255082 A CN112255082 A CN 112255082A CN 202011055988 A CN202011055988 A CN 202011055988A CN 112255082 A CN112255082 A CN 112255082A
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- cover plate
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- 238000000034 method Methods 0.000 title claims description 7
- 230000009172 bursting Effects 0.000 title description 5
- 238000005422 blasting Methods 0.000 claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 21
- 230000001681 protective effect Effects 0.000 description 4
- 239000011358 absorbing material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/313—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by explosives
Abstract
The invention discloses a pipeline pressure explosion test and protection device, which comprises three walls arranged on the ground, wherein the three walls are sequentially connected to form a U-shaped cavity, and an electronic protection door is erected in the middle of the U-shaped cavity, so that the U-shaped cavity is divided into an explosion chamber and a chamber to be exploded; a top cover plate is movably arranged at the top of the U-shaped cavity chamber, and a lifting appliance is arranged below the top cover plate; the blasting chamber ground central authorities are provided with pre-buried steel sheet, connect on the pre-buried steel sheet and set up the fixed bolster, be equipped with the transportation frame in the fixed bolster, can shift the transportation frame between waiting blasting chamber and blasting chamber through lamina tecti and hoist. The invention designs the blasting chamber, the fixed support, the transportation frame and the top cover plate, forms a complete blasting test and protection device, and can realize stable, safe and efficient pressure blasting test on a test pipeline.
Description
Technical Field
The invention relates to the technical field of pipeline pressure blasting, in particular to a pipeline pressure blasting test and protection device and an operation method thereof.
Background
At present, pressure pipelines are widely applied, and because the requirements on safety and reliability are high, pressure explosion tests are required to be carried out before leaving factories. During blasting test, the pressure pipeline has the problems of rupture impact, medium leakage spraying, large blasting noise and the like, and if the test pipeline has larger specifications, the problems of manual carrying and inconvenient fastening exist. The prior patent number 201410535895.9 is named as a pressure explosion laboratory layout design, the patent number 201921137403.5 is named as a pipe hydraulic explosion protection device, the patent number 201920879274.0 is named as a pipe hydrostatic explosion tester, and the prior patent number 201410535895.9 only solves part of the problems, does not form a systematic scheme to organically and coordinately solve the problems, and particularly lacks the installation and fastening convenience problem of replacing pipes with different specifications, particularly large pipes. The invention mainly provides a scheme and a safety protection measure for conveniently carrying out a pressure blasting test aiming at the blasting condition.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a pipeline pressure bursting test and protection device with reasonable design and an operation method thereof.
The technical scheme of the invention is as follows:
a pipeline pressure explosion test and protection device is characterized by comprising three walls arranged on the ground, wherein the three walls are sequentially connected to form a U-shaped cavity, and an electronic protection door is erected in the middle of the U-shaped cavity, so that the U-shaped cavity is divided into an explosion chamber and a chamber to be exploded; a top cover plate is movably arranged at the top of the U-shaped cavity chamber, and a lifting appliance is arranged below the top cover plate; the blasting chamber ground central authorities are provided with pre-buried steel sheet, connect on the pre-buried steel sheet and set up the fixed bolster, be equipped with the transportation frame in the fixed bolster, can shift the transportation frame between waiting blasting chamber and blasting chamber through lamina tecti and hoist.
The pipeline pressure blasting test and protection device is characterized in that the ground of the blasting chamber is obliquely arranged, and a liquid collecting pit is arranged at a corner of the wall.
The pipeline pressure bursting test and protection device is characterized in that V-shaped structures are adopted at two ends of the fixed support and used for placing test pipelines, V-shaped structures are also adopted at two ends of the transportation frame, and the height of the V-shaped structures on the transportation frame is lower than that of the V-shaped structures on the fixed support.
The pipeline pressure blasting test and protection device is characterized in that noise-reducing impact-resistant non-water-absorbing materials are fixedly arranged on the inner sides of three wall bodies of a blasting chamber, the inner side of an electronic protection door and the inner side of a top cover plate respectively, and the noise-reducing impact-resistant non-water-absorbing materials are single-layer or composite-layer materials.
The pipeline pressure explosion test and protection device is characterized in that a water blocking step is arranged on the ground of the explosion chamber at a position close to the electronic protection door.
The pipeline pressure blasting test and protection device is characterized in that a through hole is formed in the wall body of the blasting chamber close to the pressurizing equipment, and a pressurizing pipeline connected with the pressurizing equipment penetrates through the through hole.
The utility model provides a pipeline pressure bursting test and protector, its characterized in that, the both ends of fixed bolster are equipped with the cardboard, and the cardboard can adjust on the different high screw holes on the fixed bolster through the bolt, the both sides of fixed bolster are equipped with the side guard board, the up end of fixed bolster is equipped with the top backplate, and the top backplate can be installed and removed in the pull groove of fixed bolster by the pull.
The pipeline pressure explosion test and protection device is characterized in that a sliding rail is arranged at the top of the U-shaped cavity chamber, a sliding block matched with the sliding rail is arranged on the top cover plate, the sliding rail is a dovetail-shaped or rectangular sliding rail, and limiting blocks are arranged at two ends of the sliding rail to prevent the top cover plate from accidentally falling from two sides; the top cover plate is driven by an air cylinder, a hydraulic cylinder or a linear motor.
The pipeline pressure explosion test and protection device is characterized by further comprising a safety alarm system, wherein the safety alarm system comprises an emergency stop system and an accident alarm device, the emergency stop system comprises an emergency stop button and an emergency stop signal lamp and is used for controlling explosion pressurization equipment to stop pressurizing and releasing pressure, a top cover plate stops sliding and a lifting appliance stops lifting; the accident alarm device comprises an alarm button and an alarm bell, and is used for on-site alarm and transmitting an alarm signal to a medical care first-aid department, and the safety alarm system is arranged outside the electronic protection door and near the blasting pressurization equipment.
The operation method of the pipeline pressure explosion test and protection device is characterized by comprising the following steps:
1) the transportation tool places the test pipeline on a transportation frame, and places the transportation frame and the test pipeline together at the position of the ground mark of the chamber to be blasted;
2) then the lifting appliance lifts the transport frame, when the lifting appliance drives the transport frame to reach the lifting position, the electronic protection door is opened, and when the electronic protection door is opened to the detection position, the top cover plate starts to slide on the slide rail to drive the transport frame to move horizontally;
3) after the transport frame reaches the position right above the fixed support, the lifting appliance descends, the transport frame is placed into the fixed support, the lifting appliance stops acting after the transport frame descends to the ground in the fixed support, the transport frame and the lifting appliance are connected and disassembled, and the lifting appliance is recovered to the ascending position;
4) fixing two ends of the test pipeline on the fixed support through the clamping plate, and covering the upper end face of the fixed support through the top protection plate;
5) and closing the electronic protection door, and opening the blasting pressurization equipment to perform the blasting test.
The invention has the beneficial effects that:
1) the inside medium also needs the discharge after the tubular product blasting, because the blasting position is indefinite, often need rotate and make the blast hole towards the below, and convenient rotation of fixed bolster V type structure keeps the angle, even if the blast hole is just also can the flowing back directly over the V type structure.
2) The stop position of 2 utmost point limit control actions can be set for in the sliding of lamina tecti, hoist lift, and action speed is fixed at the uniform velocity, saves the loaded down with trivial details, dangerous, not accurate problem of manual operation, improves experiment greatly and carries out efficiency and reliability.
3) The invention designs the blasting chamber, the fixed support, the transportation frame and the top cover plate, forms a complete blasting test and protection device, and can realize stable, safe and efficient pressure blasting test on a test pipeline.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is an enlarged view of the structure at A of the present invention;
FIG. 5 is a schematic view of the fixing bracket of the present invention;
in the figure: 1-blasting chamber, 2-fixed support, 3-transport frame, 4-embedded steel plate, 5-step for water blocking, 6-lifting appliance, 7-through hole, 8-electronic protective door, 9-test pipeline, 10-clamping plate, 11-top protective plate, 12-slide block, 13-slide rail, 14-drawing groove, 15-side protective plate, 16-liquid collecting pit, 17-through hole and 18-wall body.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1-5, a pipeline pressure burst test and protection device can realize convenient and rapid replacement of different test pipe specifications, including large and heavy-duty specification pipes; the noise can be reduced, the impact can be prevented, and the medium can be collected or discharged during the blasting; multiple safety protection can be realized, and safety accidents caused by manual operation errors or equipment faults are prevented; the safety alarm system can respond to different accidents quickly. The specific technical scheme capable of achieving the aim of the invention is as follows:
a pipeline pressure blasting test and protection device comprises a blasting chamber 1, a to-be-blasted chamber 18, a fixing support 2, a top cover plate 11, a lifting appliance 6, a transportation frame 3, an electronic protection door 8 and a safety alarm system. Three walls of the blasting chamber 1 are built by reinforced concrete, the other side is provided with a step 5 for water blocking, and the inner side of the wall is fixedly provided with a noise-reducing impact-resistant non-absorbent material which can be a single-layer or composite-layer material, such as a foamed aluminum plate, a butyl rubber plate and the like, and is selected according to conditions such as blasting pressure, a pressurizing medium, noise reduction requirements and the like. The ground of the explosion chamber 1 is slightly inclined, a liquid collecting pit 16 is arranged at the corner of the wall, the medium after explosion and when the connector is assembled and disassembled can be intensively discharged or recovered, and the center of the ground is provided with an embedded steel plate 4 used for being connected with the fixed bracket 2. The end of the explosion chamber 1 close to the explosion pressurizing equipment is provided with a through hole 17, and a pressurizing pipeline connected with the pressurizing equipment penetrates through the through hole.
The fixed bolster 2 sets up in explosion chamber 1, fixes on the pre-buried steel sheet 4 in ground with the screw, and 1 both ends of fixed bolster are "V" type and are used for placing test pipeline, and 1 both ends of fixed bolster are being located the pipeline top and are being provided with cardboard 10, and the pipe flies to assault and pulls the pressurization pipeline when preventing to explode, and cardboard 10 mountable corresponds the pipeline specification of different specifications on different screw holes. The side guard plates 15 are arranged on two sides of the fixed support 1, the top guard plate 11 is arranged on the upper end face of the fixed support to prevent fragment or medium impact, the side guard plates on the two sides are fixedly installed, and the top guard plates on the upper end face can be assembled and disassembled through the drawing grooves 14.
The top of the explosion chamber 1 adopts a slidable top cover plate form, and the lifting appliance 6 is arranged below the top cover and is mainly used for transporting and installing large and heavy pipelines. The inner side of the top cover plate 7 is the same as the inner side of the wall of the blasting chamber, the same noise-reducing impact-resistant water-non-absorbent material is fixedly arranged, the noise-reducing effect is achieved to the maximum extent, the slide rail 13 is arranged inside the lower portion of the top cover plate 7, and the gap between the top cover plate 7 and the top surface of the wall is as small as possible. And mechanical limiting blocks are arranged at two ends of the sliding rail 13, so that the top cover plate 7 is prevented from accidentally falling from two sides. The sliding power of the top cover plate 7 can be in the form of a cylinder with positioning, throttling and interlocking functions, a hydraulic cylinder or a linear motor with frequency conversion and a band-type brake, the top cover plate stops and locks the position after reaching a designated position through the detection of a positioning function or a detection switch after reaching the position at a set speed, and the top cover plate can be locked when a power source is cut off. In order to prevent the top cover plate from lifting upwards and falling down due to accidental blasting impact, the slide rail 13 is preferably shaped to limit the upward movement of the slider 12, such as a dovetail-shaped slide rail, a rectangular slide rail, etc. The hoist 6 is used for the transport frame that takes off and land from top to bottom, and hoist 6 does not need horizontal motion, and only detects 6 take off and land from top to bottom and reachs extremely spacing back, and the lamina tecti just can slide, and hoist 6's motor has the band-type brake function, can prevent to hang the thing whereabouts during the outage.
The transportation frame 2 is used as a tool for large and heavy pipelines to enter and exit the blasting chamber, and the two ends of the transportation frame are V-shaped like the fixed support 3 for placing the test pipeline. After an external tool such as a forklift places the pipeline on the transportation frame, the transportation frame and the pipeline are placed at the position of the ground mark outside the blasting chamber by the transportation tool, then the transportation frame is lifted by using a lifting appliance, and the lifting appliance can be in a rope or rigid support form and is selected according to the transportation speed and stability requirements. After the lifting appliance drives the transport frame to reach the ascending position, the top cover plate starts to slide, and after the lifting appliance reaches the position right above the fixed support, the lifting appliance descends, because the length and the width of the transport frame are smaller than those of the fixed support, the V-shaped structure is lower than that of the fixed support, the pipeline is carried by the V-shaped structure of the fixed support, the lifting appliance stops acting after the transport frame descends to the ground in the fixed support, and the lifting appliance is recovered and ascended after the connection part of the transport frame is detached.
The back of the electronic protection door 8 is the same as the inner side of the wall of the blasting chamber, and the same noise-reducing impact-resistant non-water-absorbing material is fixedly arranged on the back of the electronic protection door. The door lock adopts an electronic lock, and can transmit the opening and closing information of the lock for safety protection. Only under the electronic lock closed state, can open the pressurized equipment and carry out the blasting test, only after pressurized equipment totally released pressure, the electronic lock can be opened, when the electronic lock trouble was opened by accident during the experiment, pressurized equipment pressure release. In addition, only when the two side doors are opened to the detection position, the top cover plate can be transported in a sliding mode. The outside of the electronic protection door 8 can be provided with a signal lamp or an electronic screen, and an operator outside the door can check the test state according to the color or the identification of the signal lamp.
The safety alarm system mainly comprises an emergency stop system and an accident alarm device. When an emergency occurs, the emergency stop button is pressed, so that the pressurizing equipment stops pressurizing and releasing pressure, the top cover stops sliding, and the lifting appliance stops lifting; the accident alarm device is used for pressing an alarm button to make a ring sound when a personal accident occurs, and transmitting signals to relevant departments such as medical care first aid and the like. The emergency stop button, the emergency stop signal lamp, the alarm button and the alarm bell are arranged outside the electronic protective door and near the pressurizing equipment.
A method for operating a pipeline pressure explosion test and protection device comprises the following specific steps:
1) the transportation tool places the test pipeline on a transportation frame, and places the transportation frame and the test pipeline together at the position of the ground mark of the chamber to be blasted;
2) then the lifting appliance lifts the transport frame, when the lifting appliance drives the transport frame to reach the lifting position, the electronic protection door is opened, and when the electronic protection door is opened to the detection position, the top cover plate starts to slide on the slide rail to drive the transport frame to move horizontally;
3) after the transport frame reaches the position right above the fixed support, the lifting appliance descends, the transport frame is placed into the fixed support, the lifting appliance stops acting after the transport frame descends to the ground in the fixed support, the transport frame and the lifting appliance are connected and disassembled, and the lifting appliance is recovered to the ascending position;
4) fixing two ends of the test pipeline on the fixed support through the clamping plate, and covering the upper end face of the fixed support through the top protection plate;
5) and closing the electronic protection door, and opening the blasting pressurization equipment to perform the blasting test.
Claims (10)
1. The pipeline pressure blasting test and protection device is characterized by comprising three walls (18) arranged on the ground, wherein the three walls (18) are sequentially connected to form a U-shaped cavity, and an electronic protection door (8) is erected in the middle of the U-shaped cavity, so that the U-shaped cavity is divided into a blasting chamber (1) and a chamber to be blasted (18); a top cover plate (7) is movably arranged at the top of the U-shaped cavity chamber, and a lifting appliance (6) is arranged below the top cover plate (7); the blasting chamber (1) ground central authorities are provided with pre-buried steel sheet (4), connect on pre-buried steel sheet (4) and set up fixed bolster (2), be equipped with transportation frame (3) in fixed bolster (2), can shift transportation frame (3) between treating blasting chamber (18) and blasting chamber (1) through lamina tecti (7) and hoist (6).
2. A pipe pressure burst test and protection device according to claim 1, characterized in that the blasting chamber (1) is arranged obliquely on the ground and is provided with a sump (16) at the corner.
3. The pipeline pressure burst test and protection device as claimed in claim 1, wherein both ends of the fixing support (2) are of V-shaped structures for placing test pipelines, both ends of the transportation frame (3) are also of V-shaped structures, and the height of the V-shaped structures on the transportation frame (3) is lower than that of the V-shaped structures on the fixing support (2).
4. The pipeline pressure burst test and protection device according to claim 1, wherein noise-reducing, impact-resistant and non-absorbent materials are respectively and fixedly arranged on the inner sides of the three wall bodies (18), the electronic protection door (8) and the top cover plate (7) of the burst chamber (1), and the noise-reducing, impact-resistant and non-absorbent materials are single-layer or composite-layer materials.
5. A pipeline pressure burst test and protection device according to claim 1, characterized in that the blasting chamber (1) is provided with a water-stopping step (5) on the ground near the electronic protection door (8).
6. The pipeline pressure burst test and protection device as claimed in claim 1, wherein the wall of the burst chamber (1) is provided with a through hole (17) near the end of the pressurizing equipment for the pressurized pipeline connected with the pressurizing equipment to pass through.
7. The pipeline pressure burst test and protection device according to claim 1, wherein clamping plates (10) are arranged at two ends of the fixing support (2), the clamping plates (10) can be adjusted on threaded holes with different heights on the fixing support (2) through bolts, side protection plates (15) are arranged at two sides of the fixing support (2), a top protection plate (11) is arranged on the upper end face of the fixing support (2), and the top protection plate (11) can be installed and detached in a drawing groove of the fixing support (2) in a drawing mode.
8. The pipeline pressure burst test and protection device as claimed in claim 1, wherein a sliding rail (13) is arranged at the top of the U-shaped cavity chamber, a sliding block (12) matched with the sliding rail (13) is arranged on the top cover plate (7), the sliding rail (12) is a dovetail-shaped or rectangular sliding rail, and two ends of the sliding rail (12) are provided with limiting blocks to prevent the top cover plate from accidentally falling off from two sides; the top cover plate (7) is driven by an air cylinder, a hydraulic cylinder or a linear motor.
9. The pipeline pressure burst test and protection device according to claim 1, further comprising a safety alarm system, wherein the safety alarm system comprises an emergency stop system and an accident alarm device, the emergency stop system comprises an emergency stop button and an emergency stop signal lamp, and the emergency stop system is used for controlling the burst pressurization equipment to stop pressurizing and releasing pressure, the top cover plate stops sliding, and the lifting appliance stops lifting; the accident alarm device comprises an alarm button and an alarm bell, and is used for on-site alarm and transmitting an alarm signal to a medical care first-aid department, and the safety alarm system is arranged outside the electronic protection door and near the blasting pressurization equipment.
10. The method of operating a pipe pressure burst test and protection device of any one of claims 1 to 9, comprising the steps of:
1) the transportation tool places the test pipeline on a transportation frame, and places the transportation frame and the test pipeline together at the position of the ground mark of the chamber to be blasted;
2) then the lifting appliance lifts the transport frame, when the lifting appliance drives the transport frame to reach the lifting position, the electronic protection door is opened, and when the electronic protection door is opened to the detection position, the top cover plate starts to slide on the slide rail to drive the transport frame to move horizontally;
3) after the transport frame reaches the position right above the fixed support, the lifting appliance descends, the transport frame is placed into the fixed support, the lifting appliance stops acting after the transport frame descends to the ground in the fixed support, the transport frame and the lifting appliance are connected and disassembled, and the lifting appliance is recovered to the ascending position;
4) fixing two ends of the test pipeline on the fixed support through the clamping plate, and covering the upper end face of the fixed support through the top protection plate;
5) and closing the electronic protection door, and opening the blasting pressurization equipment to perform the blasting test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055988.3A CN112255082A (en) | 2020-09-29 | 2020-09-29 | Pipeline pressure bursting test and protection device and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055988.3A CN112255082A (en) | 2020-09-29 | 2020-09-29 | Pipeline pressure bursting test and protection device and operation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112255082A true CN112255082A (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011055988.3A Pending CN112255082A (en) | 2020-09-29 | 2020-09-29 | Pipeline pressure bursting test and protection device and operation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN112255082A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116539410A (en) * | 2023-06-30 | 2023-08-04 | 淄博圣世达爆破工程有限公司 | Pipeline pressure bursting testing arrangement with protective structure |
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| CN101723224A (en) * | 2009-11-08 | 2010-06-09 | 张光裕 | Intra-building conveyer |
| CN203908877U (en) * | 2014-04-23 | 2014-10-29 | 北京国彬信诚科技有限公司 | Explosion test system for ultrahigh pressure gas cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116539410A (en) * | 2023-06-30 | 2023-08-04 | 淄博圣世达爆破工程有限公司 | Pipeline pressure bursting testing arrangement with protective structure |
| CN116539410B (en) * | 2023-06-30 | 2023-09-12 | 淄博圣世达爆破工程有限公司 | Pipeline pressure bursting testing arrangement with protective structure |
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Application publication date: 20210122 |
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| RJ01 | Rejection of invention patent application after publication |