CN114076232B - Hydraulic engineering pipeline connecting device - Google Patents
Hydraulic engineering pipeline connecting device Download PDFInfo
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- CN114076232B CN114076232B CN202111167318.5A CN202111167318A CN114076232B CN 114076232 B CN114076232 B CN 114076232B CN 202111167318 A CN202111167318 A CN 202111167318A CN 114076232 B CN114076232 B CN 114076232B
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- sealing
- connecting cylinder
- wall
- hydraulic engineering
- connecting device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention discloses a hydraulic engineering pipeline connecting device, which specifically comprises: the fixed ball, the both sides of this fixed ball are all linked together the fixed tube, the said fixed tube inner wall has internal screw threads; the connecting device is arranged inside the fixed pipe and is in threaded connection with the inner wall of the fixed pipe, and one end of the connecting device extends to the outside of the fixed pipe; the connecting device comprises: the connecting cylinder is provided with a sealing device in threaded connection with one end of the inner wall of the connecting cylinder, and the part of the connecting cylinder, which is positioned outside the fixed pipe, is fixedly connected with a rotating ring through a bracket; the positioning device is arranged at one end, far away from the sealing device, of the connecting cylinder, and is provided with a plurality of groups and uniformly distributed on the connecting cylinder. This hydraulic engineering pipeline connecting device, adaptability is better, when being directed against the pipeline inside of different diameters, need not to select suitable connecting device to sealed easy operation, convenient to use.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering, in particular to a hydraulic engineering pipeline connecting device.
Background
The hydraulic engineering is a built engineering for controlling and allocating surface water and underground water in nature to achieve the aim of removing harm and benefiting. The water is a precious resource essential for human production and life, but the naturally occurring state of the water is not completely in line with the needs of human beings, the water flow can be controlled only by building the hydraulic engineering, flood disasters are prevented, the water quantity is regulated and distributed to meet the needs of people living and production on the water resource, the hydraulic engineering needs to build different types of hydraulic buildings such as dams, dykes, spillways, sluice gates, water inlets, channels, transition tanks, raft channels and fishways to achieve the purposes, and the pipeline connecting devices used in the hydraulic engineering at present can only be connected with pipelines matched with the devices, and when the pipe diameters of the pipelines change, the suitable connecting devices need to be replaced, so that the suitability of the connecting devices is poor and the use is inconvenient.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a hydraulic engineering pipeline connecting device, which solves the problems that the pipeline connecting device used in the prior hydraulic engineering can only be connected with a pipeline matched with the device, and when the pipe diameter of the pipeline changes, the proper connecting device needs to be replaced, the adaptability of the connecting device is poor and the use is inconvenient.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: a hydraulic engineering pipeline connecting device specifically comprises:
the fixed ball, the both sides of this fixed ball are all linked together the fixed tube, the said fixed tube inner wall has internal screw threads;
the connecting device is arranged inside the fixed pipe and is in threaded connection with the inner wall of the fixed pipe, and one end of the connecting device extends to the outside of the fixed pipe;
the connecting device comprises:
the connecting cylinder is provided with a sealing device in threaded connection with one end of the inner wall of the connecting cylinder, and the part of the connecting cylinder, which is positioned outside the fixed pipe, is fixedly connected with a rotating ring through a bracket;
the positioning device is arranged at one end, far away from the sealing device, of the connecting cylinder, and the positioning device is provided with a plurality of groups and is uniformly distributed on the connecting cylinder.
Preferably, the outside of the connecting cylinder is provided with external threads and is in threaded connection with the inner wall of the fixed pipe, and the bottom pipe of the positioning device wipes the connecting cylinder and extends into the connecting cylinder.
Preferably, the positioning device comprises a positioning seat, a threaded rod penetrates through the top of the positioning seat and is in threaded connection with the top of the positioning seat, a supporting plate is connected with the bottom of the threaded rod in a penetrating and rotating mode, a pressing plate is connected with one end of the threaded rod penetrating through the supporting plate in a rotating mode through a bearing, and guide rods are fixedly connected to portions, located on two sides of the threaded rod, of the top of the supporting plate.
During the use, insert the connecting device inside of fixed ball both sides respectively with two sets of pipelines that need to connect, then seal pipeline tip through the inside sealing device top tight pipeline tip of connecting device, then fix the pipeline through positioner can, when the pipeline of different diameters is fixed to needs, rotate the threaded rod, the threaded rod drives the pressure strip and can adapt to the pipeline of different diameters at the inside removal of connecting cylinder, the adaptability is better, when the pipeline of different diameters is inside, need not to select suitable connecting device, and convenient use, and be provided with backup pad and pressure strip, the shape of pressure strip is rectangular shape, the backup pad both sides are connected with the pressure strip both ends through the ejector pin, accessible ejector pin is tight with pressure strip both ends top, avoid the pressure strip to produce deformation, can avoid the pipeline of connection to incline the activity in the connecting cylinder inside, safe and reliable use, be provided with the guide bar, when the pressure strip removes, accessible guide bar limits its direction of movement, when the pressure strip compresses tightly on the pipeline of connection, accessible guide bar assists the threaded rod to top tightly the pressure strip, the threaded rod produces the bending.
Preferably, the bottom of the positioning seat is fixedly connected with the connecting cylinder, the supporting plate and the compacting plates are arranged inside the connecting cylinder, and the top of the guide rod penetrates through the connecting cylinder and the positioning seat and is in sliding connection with the connecting cylinder and the positioning seat.
Preferably, the top of the threaded rod is provided with a rotating handle, and two sides of the supporting plate are fixedly connected with the compacting plates through ejector rods.
Preferably, the sealing device comprises an outer sealing ring, an inner sealing ring is connected with the inner wall of the outer sealing ring in a threaded manner, an inclined sealing table is arranged at one end of the outer sealing ring and one end of the inner sealing ring, a sealing groove is arranged at the top of the inclined sealing table, a sealing gasket is fixedly connected to the top of the sealing groove, and a cross groove is arranged at one side, far away from the inclined sealing table, of the outer sealing ring and the inner sealing ring.
Preferably, the inner sealing ring comprises a connecting sleeve, an arc sealing ring is fixedly connected to the outer side of one end of the connecting sleeve, an arc elastic sheet is fixedly connected to the inner wall of the arc sealing ring, a jacking spring is fixedly connected to the bottom of the arc elastic sheet through a support, a plurality of groups of arc elastic sheets are arranged and connected through connecting sheets, the inner sealing ring is provided with a plurality of groups, the latter groups are arranged inside the former groups and are in threaded connection with the inner wall of the former groups, and the inner sealing ring is provided with a plurality of groups, and the latter groups are arranged inside the former groups and are in threaded connection with the inner wall of the former groups.
When connecting pipe inserts inside the connecting cylinder, one end top is tightly on the inside slope sealing bench of sealing device, the pipeline wall compresses tightly on sealed pad and falls into inside the seal groove, the sealed pad produces deformation this moment, and compress tightly on the one end pipe wall of connecting pipe through the elasticity that the deformation produced, sealing operation is simple, and convenient use, and be provided with outer sealing washer and inner sealing washer, the inner sealing washer is provided with the multiunit, when connecting pipe's pipe diameter changes, accessible dismouting inner sealing washer is in order to adapt to the connecting pipe of different diameters, sealed adaptability is better, pass through threaded connection between each group of inner sealing washer, the dismouting is more convenient, and the inner sealing washer outside is provided with arc sealing pad, when inner sealing washer interconnect, the inner sealing washer extrusion arc sealing pad in the outside, arc sealing pad produces deformation and extrudes the arc shell fragment, make it hug closely on the inner sealing washer inner wall in the outside through top tight spring and support extrusion arc sealing pad, can realize sealing, the pressure is big more can drive the inner sealing washer in the inboard and the arc sealing pad in the outside, the pressure between arc sealing pad and the inner sealing washer is bigger the sealing effect is better.
(III) beneficial effects
The invention provides a hydraulic engineering pipeline connecting device. The beneficial effects are as follows:
(1) This hydraulic engineering pipeline connecting device is provided with positioner, inside inserting the connecting device of fixed ball both sides respectively with two sets of pipelines that need to connect, then seal pipeline tip through the inside sealing device top tight pipeline tip of connecting device, then fix the pipeline through positioner can, when the pipeline of different diameters needs to be fixed, rotate the threaded rod, the threaded rod drives the pressure strip and can adapt to the pipeline of different diameters at the inside removal of connecting cylinder, adaptability is better, when being inside to the pipeline of different diameters, need not to select suitable connecting device, convenient to use.
(2) This hydraulic engineering pipeline connecting device is provided with backup pad and pressure strip, and the shape of pressure strip is rectangular shape, and the backup pad both sides are connected with the pressure strip both ends through the ejector pin, and accessible ejector pin is tight with pressure strip both ends top, avoids the pressure strip to produce deformation, can avoid the pipeline of connection to incline the activity at the connecting cylinder inside, uses safe and reliable.
(3) This hydraulic engineering pipeline connecting device is provided with the guide bar, and when the pressure strip removed, accessible guide bar restriction its direction of movement, when the pressure strip compresses tightly on the pipeline of connection, accessible guide bar assists the screw rod to carry out the top tightly to the pressure strip, can avoid the threaded rod to produce the bending.
(4) This hydraulic engineering pipeline connecting device is provided with sealing device, when connecting pipeline inserts inside the connecting cylinder, one end top tightly seals on the inside slope sealing bench of sealing device, and the pipeline wall compresses tightly on sealed pad and inside sinking into the seal groove, and sealed pad produces deformation this moment to compress tightly on connecting pipeline's one end pipe wall through the elasticity that deformation produced can seal connecting pipeline, sealing operation is simple, convenient to use.
(5) This hydraulic engineering pipeline connecting device is provided with outer sealing washer and interior sealing washer, and interior sealing washer is provided with the multiunit, and when connecting tube's pipe diameter changed, the connecting tube of accessible dismouting interior sealing washer in order to adapt to different diameters, and sealed adaptability is better, and tight spring in top and support extrusion arc seal pad make it hug closely on the interior sealing washer inner wall in the outside, can realize sealedly, and the pressure of water is bigger can drive the interior sealing washer in inboard and the interior sealing washer in the outside is hugged closely more with the arc seal pad, and the clamping force between arc seal pad and the interior sealing washer is bigger, and sealed effect is better.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the present invention;
FIG. 3 is a schematic view of a connecting device according to the present invention;
FIG. 4 is a schematic view of a positioning device according to the present invention;
FIG. 5 is a schematic view of a seal arrangement according to the present invention;
FIG. 6 is a schematic view of the inner seal ring structure of the present invention.
In the figure: 1. the device comprises a fixed ball, 2, a fixed pipe, 3, a connecting device, 31, a connecting cylinder, 32, a sealing device, 321, an outer sealing ring, 322, an inner sealing ring, a1, a connecting sleeve, a2, an arc sealing gasket, a3, an arc elastic sheet, a4, a pushing spring, a5, a connecting sheet, 323, an inclined sealing table, 324, a sealing groove, 325, a sealing gasket, 326, a cross groove, 33, a rotating ring, 34, a positioning device, 341, a positioning seat, 342, a threaded rod, 343, a supporting plate, 344, a pressing plate, 345 and a guide rod.
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.
Embodiment one:
referring to fig. 1-4, the present invention provides a technical solution: a hydraulic engineering pipeline connecting device specifically comprises:
the fixing ball 1, the both sides of the fixing ball 1 are communicated with the fixing tube 2, the inner wall of the fixing tube 2 is provided with internal threads;
the connecting device 3 is arranged inside the fixed pipe 2 and is in threaded connection with the inner wall of the fixed pipe 2, and one end of the connecting device 3 extends to the outside of the fixed pipe 2;
the connecting device 3 includes:
the connecting cylinder 31, one end of the inner wall of the connecting cylinder 31 is connected with a sealing device 32 in a threaded manner, and the part of the connecting cylinder 31 positioned outside the fixed pipe 2 is fixedly connected with a rotating ring 33 through a bracket;
the positioning device 34, the positioning device 34 is arranged at one end of the connecting cylinder 31 far away from the sealing device 32, and the positioning device 34 is provided with a plurality of groups and is uniformly distributed on the connecting cylinder 31.
The positioning device 34 comprises a positioning seat 341, a threaded rod 342 penetrates through the top of the positioning seat 341 and is in threaded connection with the top of the positioning seat, a supporting plate 343 penetrates through the bottom of the threaded rod 342 and is rotationally connected with the threaded rod 342, one end of the threaded rod 342 penetrating through the supporting plate 343 is rotationally connected with a pressing plate 344 through a bearing, and parts, located on two sides of the threaded rod 342, of the top of the supporting plate 344 are fixedly connected with guide rods 345.
During the use, insert the connecting device 3 inside of fixed ball 1 both sides respectively with two sets of pipelines that need connect, then seal pipeline tip through the inside sealing device 32 top of connecting device 31, then fix the pipeline through positioner 34 can, when the pipeline of different diameters needs to be fixed, rotate threaded rod 342, threaded rod 342 drives the pressure strip 344 and removes the pipeline that can adapt to different diameters inside connecting tube 31, the adaptability is better, when the pipeline of different diameters is inside, need not to select suitable connecting device, and convenient to use, and be provided with backup pad 343 and pressure strip 344, the shape of pressure strip 344 is rectangular shape, the backup pad 343 both sides are connected with pressure strip 344 both ends through the ejector pin, accessible ejector pin is with pressure strip 344 both ends top tightly, avoid pressure strip 344 to produce deformation, can avoid the pipeline of connecting to incline the activity in connecting tube 31 inside, safe and reliable use, when pressure strip 344 removes, accessible guide rod 345 limits its direction of movement, when pressure strip 344 compresses tightly on the pipeline of connecting, accessible guide rod 345 assists top to pressure strip 344 to bend 342, can avoid producing the pressure strip 342.
Embodiment two:
referring to fig. 1-6, the present invention provides a technical solution based on the first embodiment: sealing device 32 includes outer sealing washer 321, and outer sealing washer 321 inner wall threaded connection has inner seal ring 322, and slope sealing bench 323 has all been seted up to outer sealing washer 321 and inner seal ring 322 one end, and seal groove 324 has been seted up at slope sealing bench 323 top, and seal groove 324 top fixedly connected with is sealed to fill up 325, cross groove 326 has all been seted up to one side that outer sealing washer 321 and inner seal ring 322 kept away from slope sealing bench 323, inner seal ring 322 includes adapter sleeve a1, adapter sleeve a1 one end outside fixedly connected with arc seal pad a2, arc seal pad a2 inner wall fixedly connected with arc shell fragment a3, arc shell fragment a3 bottom is through support fixedly connected with tight spring a4 in top, arc shell fragment a3 is provided with the multiunit and is connected through connection piece a5, inner seal ring 322 is provided with multiunit and the latter group set up in preceding group inside and rather than inner wall threaded connection.
When connecting pipe inserts inside the connecting cylinder 31, one end pushes up tightly on the inside slope sealing bench 323 of sealing device 32, the pipeline wall compresses tightly on sealing gasket 325 and falls into inside sealing groove 324, sealing gasket 325 produces deformation this moment, and compress tightly on connecting pipe's one end pipe wall through the elasticity that deformation produced, sealing operation is simple, and convenient to use, and be provided with outer sealing washer 321 and inner seal circle 322, inner seal circle 322 is provided with the multiunit, when connecting pipe's pipe diameter changes, accessible dismouting inner seal circle 322 is in order to adapt to connecting pipe of different diameters, seal adaptability is better, pass through threaded connection between each group of inner seal circle 322, the dismouting is more convenient, and the inner seal circle 322 outside is provided with arc sealing gasket a2, when inner seal circle 322 interconnect, the inner seal circle 322 in the outside extrudes arc sealing gasket a2, arc sealing gasket a2 produces deformation and extrudes arc shell fragment a3, make it hug closely on the inner seal circle 322 inner wall in the outside through pushing up spring a4 and support, can realize sealing, water pressure can drive the inner seal 322 in the inboard and the inner seal circle of arc sealing gasket a2 more closely, the effect is better between the sealing gasket a2 and the arc sealing gasket a2 is compressed tightly more than the arc sealing gasket a 2.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
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 (5)
1. A hydraulic engineering pipeline connecting device specifically comprises:
the fixing device comprises a fixing ball (1), wherein both sides of the fixing ball (1) are communicated with a fixing pipe (2), and an inner thread is arranged on the inner wall of the fixing pipe (2);
the connecting device (3) is arranged inside the fixed pipe (2) and is in threaded connection with the inner wall of the fixed pipe (2), and one end of the connecting device (3) extends to the outside of the fixed pipe (2);
the hydraulic engineering pipeline connecting device is characterized in that: the connecting device (3) comprises:
the connecting tube (31), one end of the inner wall of the connecting tube (31) is connected with a sealing device (32) in a threaded manner, and the part of the connecting tube (31) positioned at the outer side of the fixed tube (2) is fixedly connected with a rotating ring (33) through a bracket;
the positioning devices (34) are arranged at one end, far away from the sealing device (32), of the connecting cylinder (31), and the positioning devices (34) are provided with a plurality of groups and are uniformly distributed on the connecting cylinder (31);
the sealing device (32) comprises an outer sealing ring (321), an inner sealing ring (322) is connected to the inner wall of the outer sealing ring (321) in a threaded mode, an inclined sealing table (323) is arranged at one end of each of the outer sealing ring (321) and the inner sealing ring (322), a sealing groove (324) is arranged at the top of each inclined sealing table (323), a sealing gasket (325) is fixedly connected to the top of each sealing groove (324), and cross grooves (326) are formed in one sides, far away from the inclined sealing tables (323), of each outer sealing ring (321) and each inner sealing ring (322);
the inner sealing ring (322) comprises a connecting sleeve (a 1), an arc-shaped sealing pad (a 2) is fixedly connected to the outer side of one end of the connecting sleeve (a 1), an arc-shaped elastic sheet (a 3) is fixedly connected to the inner wall of the arc-shaped sealing pad (a 2), a supporting spring (a 4) is fixedly connected to the bottom of the arc-shaped elastic sheet (a 3) through a support, a plurality of groups of arc-shaped elastic sheets (a 3) are arranged and connected through connecting sheets (a 5), and the inner sealing ring (322) is provided with a plurality of groups of inner sealing rings and the latter groups of inner sealing rings are arranged inside the former groups and are in threaded connection with the inner wall of the former groups.
2. The hydraulic engineering pipeline connecting device according to claim 1, wherein: the outer side of the connecting cylinder (31) is provided with external threads and is in threaded connection with the inner wall of the fixed pipe (2), and the bottom of the positioning device (34) penetrates through the connecting cylinder (31) and extends into the connecting cylinder (31).
3. The hydraulic engineering pipeline connecting device according to claim 1, wherein: the positioning device (34) comprises a positioning seat (341), a threaded rod (342) penetrates through the top of the positioning seat (341) and is in threaded connection with the top of the positioning seat, a supporting plate (343) is connected through rotation of the bottom of the threaded rod (342), a pressing plate (344) is connected through rotation of one end of the threaded rod (342) penetrating through the supporting plate (343), and guide rods (345) are fixedly connected to the parts, located on two sides of the threaded rod (342), of the top of the supporting plate (343).
4. A hydraulic engineering pipe connection according to claim 3, wherein: the bottom of the positioning seat (341) is fixedly connected with the connecting cylinder (31), the supporting plate (343) and the pressing plate (344) are arranged inside the connecting cylinder (31), and the top of the guide rod (345) penetrates through the connecting cylinder (31) and the positioning seat (341) and is in sliding connection with the connecting cylinder (31) and the positioning seat (341).
5. A hydraulic engineering pipe connection according to claim 3, wherein: the top of the threaded rod (342) is provided with a rotating handle, and two sides of the supporting plate (343) are fixedly connected with the compacting plates (344) through ejector rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111167318.5A CN114076232B (en) | 2021-10-04 | 2021-10-04 | Hydraulic engineering pipeline connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111167318.5A CN114076232B (en) | 2021-10-04 | 2021-10-04 | Hydraulic engineering pipeline connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114076232A CN114076232A (en) | 2022-02-22 |
| CN114076232B true CN114076232B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111167318.5A Active CN114076232B (en) | 2021-10-04 | 2021-10-04 | Hydraulic engineering pipeline connecting device |
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| CN (1) | CN114076232B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017026898A1 (en) * | 2015-08-10 | 2017-02-16 | Thor Frölich Braathen | A fitting to connect water pipes |
| EP3379130A1 (en) * | 2017-03-22 | 2018-09-26 | Dieter Bächle | Plastic exhaust gas sleeve and heating system |
| CN110886916A (en) * | 2019-10-21 | 2020-03-17 | 潜山县九鼎精密机械有限公司 | Pipeline splicing and positioning device for civil air defense engineering |
| CN212004593U (en) * | 2020-04-23 | 2020-11-24 | 蒋贞 | Fixing device of hydraulic engineering pipe laying |
| CN212745412U (en) * | 2020-06-29 | 2021-03-19 | 吉林钰翎珑钢管钢构制造有限公司 | Sealing ring for pipeline connection |
-
2021
- 2021-10-04 CN CN202111167318.5A patent/CN114076232B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017026898A1 (en) * | 2015-08-10 | 2017-02-16 | Thor Frölich Braathen | A fitting to connect water pipes |
| EP3379130A1 (en) * | 2017-03-22 | 2018-09-26 | Dieter Bächle | Plastic exhaust gas sleeve and heating system |
| CN110886916A (en) * | 2019-10-21 | 2020-03-17 | 潜山县九鼎精密机械有限公司 | Pipeline splicing and positioning device for civil air defense engineering |
| CN212004593U (en) * | 2020-04-23 | 2020-11-24 | 蒋贞 | Fixing device of hydraulic engineering pipe laying |
| CN212745412U (en) * | 2020-06-29 | 2021-03-19 | 吉林钰翎珑钢管钢构制造有限公司 | Sealing ring for pipeline connection |
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| Publication number | Publication date |
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| CN114076232A (en) | 2022-02-22 |
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Effective date of registration: 20230906 Address after: No. 27 Huaxing Road, Ligang Street, Jiangyin City, Wuxi City, Jiangsu Province, 214199 Applicant after: Jiangyin Chengli Construction Co.,Ltd. Address before: 510600 room 1520, financial building, 171 Haibin Road, Nansha District, Guangzhou, Guangdong Applicant before: Sun Yage |
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