CN114396528B - PE pipeline pressurized plugging repairing device - Google Patents
PE pipeline pressurized plugging repairing device Download PDFInfo
- Publication number
- CN114396528B CN114396528B CN202210152700.7A CN202210152700A CN114396528B CN 114396528 B CN114396528 B CN 114396528B CN 202210152700 A CN202210152700 A CN 202210152700A CN 114396528 B CN114396528 B CN 114396528B
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- Prior art keywords
- fixedly connected
- post
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- close
- pipeline
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- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 230000009194 climbing Effects 0.000 claims description 26
- 238000001125 extrusion Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 10
- 210000003781 tooth socket Anatomy 0.000 claims description 5
- 239000012943 hotmelt Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 8
- 208000035397 Ring chromosome 7 syndrome Diseases 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 244000144730 Amygdalus persica Species 0.000 description 4
- 235000006040 Prunus persica var persica Nutrition 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect 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
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/1683—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of a patch which is fixed on the wall of the pipe by means of an adhesive, a weld or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides a PE pipeline pressurized plugging repairing device, and relates to the field of PE pipelines. The PE pipeline pressurized plugging repairing device comprises a limiting sleeve, wherein a clamping hook is fixedly connected to the inner side of the limiting sleeve, a clamping motor is fixedly connected to the side face of the limiting sleeve, a pushing gear is fixedly connected to the output end of the clamping motor, the pushing gear is meshed with the clamping hook, a plugging rod is meshed with the lower end of the pushing gear, the plugging rod is in sliding connection with the limiting sleeve, a connecting plate is connected to the surface of the plugging rod in a sliding manner, a hot melting ring is connected to the connecting plate through a screw, and a connecting frame is fixedly connected to the outer surface of the clamping hook. This PE pipeline pressurized plugging patching device through placing the seam patching device that blocks up the breach in the shutoff pole inboard, directly presses the revealing of blocking the breach when making the shutoff pole advance, through joint coupler joint fixing device, makes the pipeline that leaks obtain the shutoff fast, has reached quick shutoff's effect, has solved the pipeline repair department and has had the unable hot melt's of water droplet problem.
Description
Technical Field
The invention relates to the field of PE pipelines, in particular to a PE pipeline pressurized plugging repairing device.
Background
PE pipes, particularly large-diameter pipes, have been widely used in recent years because of their excellent corrosion resistance, high elastic plasticity, convenience in long-distance laying, and long service life. The pipelines can be damaged or even broken due to the reasons of manufacturing, installation, unreliability and the like, so that material waste, production stopping, environmental pollution and even serious accidents are caused.
The PE pipeline is usually subjected to hot-melt welding during repair, but pipeline emptying is required during hot-melt welding, and pipeline emptying for underground laying can hardly be realized, so that a device capable of repairing under the condition that pipeline circulation is not affected is designed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a PE pipeline pressurized plugging repair device, which solves the problems that water drops cannot be hot melted at a pipeline repair part, a heating mechanism is required to be disassembled after the pipeline is hot melted to weld small-range gradual welding, and the joint cannot be easily caused to leak.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the PE pipeline pressurized plugging repairing device comprises a limit sleeve, wherein a clamping hook is fixedly connected to the inner side of the limit sleeve, a clamping motor is fixedly connected to the side surface of the limit sleeve, a pushing gear is fixedly connected to the output end of the clamping motor, the pushing gear is meshed with the clamping hook, a plugging rod is meshed with the lower end of the pushing gear, the plugging rod is in sliding connection with the limit sleeve, a connecting plate is connected to the surface of the plugging rod in a sliding manner, a hot melting ring is connected to the connecting plate through a screw, a connecting frame is fixedly connected to the outer surface of the clamping hook, a movable tooth socket is fixedly connected to one end of the connecting frame, which is mutually close, a cage plate is fixedly connected to the surface of the cage plate, a movable disc is connected to one side of the sliding groove, which is mutually close, a movable motor is fixedly connected to one side of the movable disc, a climbing tooth is fixedly connected to the output end of the movable motor, climbing tooth rotates with the movable disk to be connected, climbing tooth keeps away from the one end fixedly connected with of movable motor and advances the gear, advance gear and remove tooth's socket meshing, cage board surface sliding connection has the extrusion post, extrusion post and climbing tooth contact connection, reset spring has been cup jointed on the extrusion post surface, reset spring is in the cage board outside, the one end fixedly connected with shrink storehouse that the extrusion post is close to each other, shrink storehouse inside groove sliding connection has the hot plate, the one end fixedly connected with shrink spring that the hot plate is close to each other, shrink spring is inboard in shrink storehouse, the repair strip has been placed to the one side that the hot plate is close to each other, shrink storehouse surface sliding connection has the seam post, seam post and cage board sliding connection, the one end fixedly connected with dislocation post that the seam post is close to each other, dislocation post and hot plate sliding connection, dislocation post and repair strip contact.
Preferably, the hot-melt ring comprises connecting handle and heating ring, and connecting handle side and connecting plate contact, and the distance between connecting handle lower extreme and the connecting plate is controlled through the screw, and the connecting handle is kept away from the one end of connecting plate and is articulated to have the heating ring.
Preferably, the appearance of the movable tooth slot is a semicircular ring, one side of the semicircular ring, which is close to each other, is provided with an arc-shaped groove, the upper wall of the groove is a plane, and the lower wall of the groove is provided with teeth which are meshed with the travelling gear.
Preferably, the shape of the sliding rail groove is a semicircular ring, an arc-shaped through hole is formed in the end face of the semicircular ring, the climbing teeth slide in the through hole, a sliding groove is formed in one side, close to each other, of the semicircular ring, and the moving disc slides in the sliding groove.
Preferably, the center of the climbing teeth is a central shaft, the central shaft slides with the sliding rail groove, the surface of the central shaft is fixedly connected with pressing teeth, and the pressing teeth are contacted with the top end of the extrusion column.
Preferably, the end face of the shrinkage bin is an arc-shaped plate, a through hole is formed in the side face of the arc-shaped plate, a square hole is formed in the bottom end of the arc-shaped plate, the square hole penetrates through the through hole in the side face, a sliding rail is arranged on the inner side of the shrinkage bin in a clamping mode, and the heating plate slides with the sliding rail.
Preferably, the dislocation post appearance is the column, and dislocation post terminal surface is peach shape, peach shape both sides face and hot plate sliding connection.
Compared with the prior art, the invention has the following beneficial effects:
1. This PE pipeline pressurized plugging patching device through placing the seam patching device that blocks up the breach in the shutoff pole inboard, directly presses the revealing of blocking the breach when making the shutoff pole advance, through joint coupler joint fixing device, makes the pipeline that leaks obtain the shutoff fast, has reached quick shutoff's effect, has solved the pipeline repair department and has had the unable hot melt's of water droplet problem.
2. This PE pipeline pressurized shutoff patching device carries out the hot melt simultaneously with pipeline outer wall and repair strip through the hot plate, makes pipe wall and repair strip melt simultaneously, contracts the hot plate when through pressing the repair strip, makes the repair strip can weld with the pipeline fast, has reached the effect to the pipeline does not have dismantlement welded, has solved after the pipeline hot melt need dismantle heating mechanism just can welded problem.
3. This PE pipeline area pressure shutoff patching device presses the extrusion post one by one through the climbing tooth, makes the hot plate weld the repair strip one by one, can control the degree of pressing when welding through pressing the seam repair post, closely prevents the secondary more when making pipe wall welding and reveal, has reached firm welded effect, has solved the problem that the unable butt joint of small scale step by step welding causes revealing easily.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a structure of a latch hook according to the present invention;
FIG. 3 is a schematic diagram of a plugging rod structure according to the present invention;
FIG. 4 is a schematic diagram of a mobile spline structure according to the present invention;
FIG. 5 is a schematic view of the cage structure of the present invention;
FIG. 6 is a schematic view of the structure of the shrink magazine according to the present invention;
FIG. 7 is a schematic view of a dislocation pile according to the present invention.
The device comprises a limit sleeve-1, a clamping hook-2, a clamping motor-3, a pushing gear-4, a blocking rod-5, a connecting plate-6, a hot melting ring-7, a connecting frame-8, a moving tooth socket-9, a cage plate-10, a sliding rail groove-11, a moving disc-12, a moving motor-13, a climbing tooth-14, a traveling gear-15, an extrusion column-16, a reset spring-17, a contraction bin-18, a heating plate-19, a contraction spring-20, a repairing strip-21, a sewing column-22 and a dislocation column-23.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-7, a PE pipeline pressurized plugging repair device comprises a limiting sleeve 1, wherein a clamping hook 2 is fixedly connected to the inner side of the limiting sleeve 1, a clamping motor 3 is fixedly connected to the side face of the limiting sleeve 1, a pushing gear 4 is fixedly connected to the output end of the clamping motor 3, the pushing gear 4 is meshed with the clamping hook 2, a plugging rod 5 is meshed with the lower end of the pushing gear 4, the plugging rod 5 is in sliding connection with the limiting sleeve 1, a connecting plate 6 is connected to the surface of the plugging rod 5 in a sliding manner, a hot melting ring 7 is connected to the connecting plate 6 through a screw, the hot melting ring 7 consists of a connecting handle and a heating ring, the side face of the connecting handle is contacted with the connecting plate 6, a heating ring is hinged to one end, away from the connecting plate 6, of the connecting handle, of the hot melting ring 7 can heat and fuse the outer wall of a pipeline to weld an arc repair strip on the outer side of the pipeline.
The joint hook 2 surface fixedly connected with link 8, the one end fixedly connected with that link 8 is close to each other removes tooth's socket 9, remove the inboard fixedly connected with cage board 10 of tooth's socket 9, cage board 10 fixedly connected with slide rail groove 11, one side sliding connection that slide rail groove 11 is close to each other has movable tray 12, one side fixedly connected with movable motor 13 that movable tray 12 is close to each other, movable motor 13 output fixedly connected with climbing tooth 14, the slide rail groove 11 appearance is the semicircle ring, the arc through-hole has been seted up to semicircle ring terminal surface, climbing tooth 14 slides in the through-hole, the spout has been seted up to one side that semicircle ring is close to each other, movable tray 12 slides in the spout, slide rail groove 11 can make climbing tooth 14 slide along the inside groove direction.
The climbing tooth 14 is rotationally connected with the movable disk 12, one end of the climbing tooth 14, which is far away from the movable motor 13, is fixedly connected with a travelling gear 15, the movable tooth socket 9 is in the shape of a semicircular ring, an arc-shaped groove is formed in one side, which is close to each other, of the semicircular ring, the upper wall of the groove is a plane, teeth are formed in the lower wall of the groove, the teeth are meshed with the travelling gear 15, and the climbing tooth 14 can be driven to advance under the pushing of the travelling gear 15 by the movable tooth socket 9.
The traveling gear 15 is meshed with the movable tooth slot 9, the surface of the cage plate 10 is slidably connected with the extrusion column 16, the extrusion column 16 is in contact connection with the climbing teeth 14, the center of the climbing teeth 14 is a central shaft, the central shaft slides with the sliding rail groove 11, the surface of the central shaft is fixedly connected with the pressing teeth, the pressing teeth are in contact with the top ends of the extrusion column 16, and the climbing teeth 14 can rotationally press the extrusion column 16.
The reset spring 17 has been cup jointed on the extrusion post 16 surface, reset spring 17 is in the cage board 10 outside, the one end fixedly connected with shrink storehouse 18 that extrusion post 16 is close to each other, shrink storehouse 18 inside groove sliding connection has hot plate 19, shrink storehouse 18 terminal surface is the arc, the through-hole has been seted up to the arc side, square hole has been seted up to the arc bottom, the through-hole of square hole and side runs through, the slide rail has been seted up to shrink storehouse 18 inboard card, hot plate 19 slides with the slide rail, shrink storehouse 18 can provide position and slip direction, make hot plate 19 shrink to inside inadequately.
The one end fixedly connected with shrink spring 20 that hot plate 19 is close to each other, shrink spring 20 is inboard in shrink storehouse 18, repair strip 21 has been placed to the one side that hot plate 19 is close to each other, shrink storehouse 18 surface sliding connection has seam to mend post 22, seam to mend post 22 and cage board 10 sliding connection, the one end fixedly connected with dislocation post 23 that seam to mend post 22 is close to each other, dislocation post 23 appearance is the column, dislocation post 23 terminal surface is peach shape, peach shape both sides face and hot plate 19 sliding connection, dislocation post 23 can control the distance between hot plate 19 each other when promoting repair strip 21 to be close to the pipe wall.
The dislocation columns 23 are slidably connected to the heating plate 19, and the dislocation columns 23 are in contact with the repair strip 21.
When the hot melt sealing device is used, firstly, the clamping hooks 2 are hung on the outer side of a leakage pipeline, the seam filling block is arranged in the inner groove of the sealing rod 5, the clamping motor 3 is started to push the sealing rod 5 to be close to the pipe wall through the pushing gear 4, the seam filling block is aligned to the sealing rod 5 of the leakage port to push extrusion and seal the leakage port, the moving motor 13 is started to drive the traveling gear 15 to rotate through the climbing teeth 14, the traveling gear 15 is driven by the traveling teeth 9 to rotate to push the climbing teeth 14 to move along the inner groove of the sliding rail groove 11, the climbing teeth 14 rotate to press the pressing columns 16, the heating plate 19 heats the pipe wall and the repairing strip 21, the seam filling columns 22 are pressed to enable the misplacement columns 23 to press the heating plate 19, the heating plate 19 is pulled and contracted into the contraction bin 18 by the contraction spring 20 after the repairing strip 21 is put down, the repairing strip 21 and the seam filling block form an outer side pipeline after the welding, the hot melt sealing ring 7 is installed to pull the connecting plate 6 to heat the repairing strip 21 and the seam filling block at a proper position, and the arc-shaped repairing ring 7 is used for welding and sealing the repairing strip 21.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a PE pipeline pressurized shutoff patching device, includes stop collar (1), its characterized in that: the inner side of the limit sleeve (1) is fixedly connected with the clamping hook (2), the side surface of the limit sleeve (1) is fixedly connected with the clamping motor (3), the output end of the clamping motor (3) is fixedly connected with the pushing gear (4), the pushing gear (4) is meshed with the clamping hook (2), the lower end of the pushing gear (4) is meshed with the plugging rod (5), the plugging rod (5) is in sliding connection with the limit sleeve (1), the surface of the plugging rod (5) is in sliding connection with the connecting plate (6), the connecting plate (6) is connected with the hot melting ring (7) through a screw, the outer surface of the clamping hook (2) is fixedly connected with the connecting frame (8), one end of the connecting frame (8) close to each other is fixedly connected with the movable tooth socket (9), the inner side of the movable tooth socket (9) is fixedly connected with the cage cover plate (10), one side of the cage cover plate (10) is fixedly connected with the sliding rail groove (11), one side of the sliding rail groove (11) close to each other is fixedly connected with the movable disc (12), one side of the movable disc (12) close to each other is fixedly connected with the movable motor (13), the output end of the movable motor (13) is fixedly connected with the climbing tooth (14), the climbing tooth (14) is rotatably connected with the climbing tooth (12) and one end of the movable tooth (14) is far away from the movable tooth (15), traveling gear (15) and remove tooth's socket (9) meshing, cage cover plate (10) surface sliding connection has extrusion post (16), extrusion post (16) and climbing tooth (14) contact connection, reset spring (17) have been cup jointed on extrusion post (16) surface, reset spring (17) are in cage cover plate (10) outside, one end fixedly connected with shrink storehouse (18) that extrusion post (16) are close to each other, shrink storehouse (18) inside groove sliding connection has hot plate (19), one end fixedly connected with shrink spring (20) that hot plate (19) are close to each other, shrink spring (20) are inboard in shrink storehouse (18), repair strip (21) have been placed to one side that hot plate (19) are close to each other, shrink storehouse (18) surface sliding connection has seam repair post (22), seam repair post (22) and cage cover plate (10) sliding connection, one end fixedly connected with dislocation post (23) that seam repair post (22) are close to each other, dislocation post (23) and hot plate (19) sliding connection, dislocation post (23) contact with repair strip (21), dislocation post (23) appearance is peach-shaped terminal surface, peach-shaped side and two side and hot plate (19) sliding connection.
2. The PE pipeline pressurized plugging repair device according to claim 1, wherein: the hot melting ring (7) is composed of a connecting handle and a heating ring, the side face of the connecting handle is in contact with the connecting plate (6), the lower end of the connecting handle is controlled by a screw to control the distance between the connecting plate (6), and the heating ring is hinged to one end, far away from the connecting plate (6), of the connecting handle.
3. The PE pipeline pressurized plugging repair device according to claim 1, wherein: the movable tooth slot (9) is semicircular, an arc-shaped groove is formed in one side, close to each other, of the semicircular, the upper wall of the groove is a plane, teeth are formed in the lower wall of the groove, and the teeth are meshed with the travelling gear (15).
4. The PE pipeline pressurized plugging repair device according to claim 1, wherein: the appearance of slide rail groove (11) is semicircle ring, and arc through-hole has been seted up to semicircle ring terminal surface, and climbing tooth (14) are slided in the through-hole, and the spout has been seted up to one side that semicircle ring is close to each other, and movable disk (12) are slided in the spout.
5. The PE pipeline pressurized plugging repair device according to claim 1, wherein: the center of the climbing teeth (14) is a central shaft, the central shaft slides with the sliding rail groove (11), the surface of the central shaft is fixedly connected with pressing teeth, and the pressing teeth are contacted with the top ends of the extrusion columns (16).
6. The PE pipeline pressurized plugging repair device according to claim 1, wherein: the end face of the shrinkage bin (18) is an arc-shaped plate, a through hole is formed in the side face of the arc-shaped plate, a square hole is formed in the bottom end of the arc-shaped plate, the square hole penetrates through the through hole in the side face, a sliding rail is arranged on the inner side of the shrinkage bin (18) in a clamping mode, and the heating plate (19) slides with the sliding rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210152700.7A CN114396528B (en) | 2022-02-18 | 2022-02-18 | PE pipeline pressurized plugging repairing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210152700.7A CN114396528B (en) | 2022-02-18 | 2022-02-18 | PE pipeline pressurized plugging repairing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114396528A CN114396528A (en) | 2022-04-26 |
| CN114396528B true CN114396528B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210152700.7A Active CN114396528B (en) | 2022-02-18 | 2022-02-18 | PE pipeline pressurized plugging repairing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN114396528B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101184603A (en) * | 2005-04-14 | 2008-05-21 | 里洛克澳大利亚有限公司 | Underground and partly submerged pipe winding apparatus and method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19958412A1 (en) * | 1999-12-03 | 2001-06-07 | Armin Dommer | Method for joining crosslinked polyethylene pipes comprises heating ends to be joined then holding them together under pressure to produce weld |
| CN201137792Y (en) * | 2007-12-26 | 2008-10-22 | 上海大众燃气有限公司 | PE pipeline electric melting jacket leakage gap plugging type first-aid interface |
| CN204628957U (en) * | 2015-05-27 | 2015-09-09 | 唐山三友化工股份有限公司 | The pipe pressurized repair structure of arc board-like heavy caliber PE |
| CN204628956U (en) * | 2015-05-27 | 2015-09-09 | 唐山三友化工股份有限公司 | The pipe pressurized repair structure of cradle type heavy caliber PE |
| US9995423B2 (en) * | 2016-03-22 | 2018-06-12 | James P. Kerns | Pipe repair kit |
| CN108331995B (en) * | 2018-02-08 | 2024-07-30 | 中国石油集团工程技术研究院 | Pipeline joint heating device |
| CN209587479U (en) * | 2019-02-22 | 2019-11-05 | 王守香 | A kind of PE device for repairing pipeline |
| CN212203587U (en) * | 2020-06-08 | 2020-12-22 | 张琦 | Oil and gas pipeline leak repair equipment |
| CN112228691A (en) * | 2020-10-14 | 2021-01-15 | 彭顺忠 | High-pressure pipeline repair equipment |
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2022
- 2022-02-18 CN CN202210152700.7A patent/CN114396528B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101184603A (en) * | 2005-04-14 | 2008-05-21 | 里洛克澳大利亚有限公司 | Underground and partly submerged pipe winding apparatus and method |
Non-Patent Citations (1)
| Title |
|---|
| 弧板式大口径PE管道带压堵漏技术的研发及应用;王秀忠等;给水排水(第01期);第109-111页 * |
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| CN114396528A (en) | 2022-04-26 |
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Effective date of registration: 20240521 Address after: 062450 Hejian New District, Cangzhou City, Hebei Province Applicant after: YIBO COMMUNICATION EQUIPMENT GROUP Co.,Ltd. Country or region after: China Address before: 363300 second floor, e-commerce entrepreneurship Park, Banshan Yuyuan, Yunxiao County, Zhangzhou City, Fujian Province Applicant before: Wan Di Country or region before: China |
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