CN115899396B - Gas pipeline for intelligent gas system - Google Patents
Gas pipeline for intelligent gas system Download PDFInfo
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- CN115899396B CN115899396B CN202211389489.7A CN202211389489A CN115899396B CN 115899396 B CN115899396 B CN 115899396B CN 202211389489 A CN202211389489 A CN 202211389489A CN 115899396 B CN115899396 B CN 115899396B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention belongs to the technical field of gas pipelines, and discloses a gas pipeline for an intelligent gas system, which comprises a bent pipe and a gas pipe, wherein a fixed pipe is fixedly connected to the position, close to the middle, of the outer surface of the gas pipe, a spring is fixedly connected to the inner cavity of the fixed pipe and positioned on the periphery of the gas pipe, a threaded connecting pipe is fixedly connected to the back of the spring, a lug is fixedly arranged at the position, close to the back, of the outer surface of the threaded connecting pipe at equal angles, and a clamping ring is fixedly arranged on the outer surface of the gas pipe and positioned on the position, close to the front, of the inner cavity of the threaded connecting pipe. The invention achieves the aim of facilitating the fixation between pipelines by arranging the threaded connecting pipe, the bent pipe and the gas pipe, and achieves the aim of fixing the positions between the bent pipe and the gas pipe by connecting the bent pipe with the threaded connecting pipe and connecting the threaded connecting pipe with the gas pipe.
Description
Technical Field
The invention belongs to the technical field of gas pipelines, and particularly relates to a gas pipeline for an intelligent gas system.
Background
The intelligent gas system relies on the internet of things technology to master the operation data such as pipe network pressure, pipe network flow, gas concentration, heat value, temperature, accumulated water height in a sluice well and the like of gas pipeline nodes in real time, and a gas pipe is a special pipeline for conveying combustible gas.
At present, technical staff is when carrying out intelligent gas system installation, in order to transport gas, for this technical staff can use the gas pipeline, gas pipeline among the prior art carries out the connection between two pipelines through a plurality of bolts, in actual use, because the volume of gas pipeline is great mostly, therefore, the bolt of gas pipeline junction is most more, this just leads to being connected comparatively loaded down with trivial details between pipeline and the pipeline, need carry out the fixing between a plurality of bolts, still set up the locking device of bolt simultaneously, very big very high personnel's work load.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a gas pipeline for an intelligent gas system, which has the advantages of being convenient for fixing the pipelines, being convenient for aligning the pipelines and effectively detecting whether the joint of the pipelines leaks gas.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a gas pipeline for intelligent gas system, including book return bend and gas pipe, the gas pipe surface is close to the fixed pipe of position fixedly connected with in middle part, the inner chamber of fixed pipe and be located the peripheral fixedly connected with spring of gas pipe, the back fixedly connected with screwed connection pipe of spring, the position equiangular degree fixed mounting that the screwed connection pipe surface is close to the back has the lug, the surface of gas pipe and be located the screwed connection pipe inner chamber and be close to positive position fixed mounting have the snap ring, the surface activity joint of snap ring has the third sealing washer, the back activity joint of gas pipe surface has first sealing washer, the both sides fixed mounting of fixed pipe has the side bearer, the middle part activity joint of side bearer has the threaded rod, the both sides fixed mounting of the pipe surface of bending.
Among the above-mentioned technical scheme, preferably, the gas pipe bottom is close to positive position activity joint has first base, the bottom fixed mounting of bending pipe has the second base, the top fixed mounting of bending pipe has the mounting bracket, the top fixedly connected with support of mounting bracket, the top fixedly connected with display of support opposite side, the equal fixedly connected with seal ring in position that bending pipe surface is close to openly and opposite side, the seal ring is located threaded connection's back, the equal fixed mounting of front and opposite side of mounting bracket has the inductor, the gas outlet has been seted up at the top of seal ring, the position activity joint that the fixed pipe inner chamber is close to the back has the second sealing washer.
In the above technical solution, preferably, the outer surface of the third sealing ring contacts with the inner wall of the threaded connecting pipe, and the outer surface of the first sealing ring contacts with the inner wall of the elbow pipe.
In the above technical scheme, preferably, the threaded connecting pipe is movably clamped with the gas pipe, and two ends of the spring are respectively and fixedly connected to the fixed pipe and the threaded connecting pipe.
In the above technical scheme, preferably, the bent pipe is movably clamped with the gas pipe, the inner surface of the threaded connecting pipe is in threaded connection with the outer surface of the bent pipe, and the movable track of the threaded connecting pipe is in contact with the clamping ring.
In the above technical scheme, preferably, the protruding block is semi-cylindrical, the movable track of the protruding block is not contacted with the threaded rod, and the arc length value of the interval between the two protruding blocks is less than one half of the arc length value of the outer surface of the threaded connecting pipe.
In the above technical scheme, preferably, the threaded rod is in threaded connection with the fixing frame, and the front face of the threaded rod is provided with a spanner.
In the above technical scheme, preferably, the threaded connecting pipe is movably clamped with the seal ring, and the position of the longitudinal center line of the air outlet corresponds to the position of the center line facing the air inlet in the sensor.
In the above technical solution, preferably, the inner surface of the second sealing ring contacts with the outer wall of the threaded connection pipe.
In the above technical solution, preferably, the moving track of the threaded rod is not in contact with the gas pipe.
Compared with the prior art, the invention has the following beneficial effects:
the invention achieves the aim of facilitating the fixation between pipelines by arranging the threaded connecting pipe, the bent pipe and the gas pipe, the threaded connecting pipe is driven to rotate by the rotating lug, the threaded connecting pipe is in threaded connection with the surface of the bent pipe and gradually moves towards the direction of the bent pipe, the lug is rotated until the threaded connecting pipe is completely connected with the bent pipe, at the moment, the threaded connecting pipe is clamped into the inner wall of the sealing ring, the threaded connecting pipe is connected with the threaded connecting pipe by connecting the bent pipe with the threaded connecting pipe, the purpose of fixing the position between the bent pipe and the gas pipe is achieved, and the purpose of fixing the pipelines is achieved.
The invention achieves the aim of facilitating alignment between pipelines by arranging the side frame, the threaded rod and the fixing frame, adjusting the position of the first base to enable the first base to be vertical to the opening of the bending pipe, placing the gas pipe on the surface of the first base, pushing the gas pipe, driving the fixing pipe to move by the gas pipe, driving the threaded rod to move by the fixing pipe through the side frame, contacting the threaded rod with the fixing frame, rotating the threaded rod to enable the threaded rod to be gradually connected with the fixing frame, gradually approaching the distance between the threaded rod and the fixing frame, driving the side frame to move by the threaded rod when moving, driving the gas pipe to move by the side frame through the fixing pipe, approaching the distance between the gas pipe and the bending pipe, clamping the gas pipe into the bending pipe, and completing clamping connection between the gas pipe and the bending pipe when the threaded rod rotates to the bottom, and achieving the aim of alignment between the gas pipe and the bending pipe through connection between the threaded rod and the fixing frame.
According to the invention, the purpose of effectively detecting whether the pipeline is in air leakage or not is achieved by arranging the seal ring, the air outlet, the sensor and the display, when the air leakage occurs, the air flows into the seam between the threaded connecting pipe and the gas pipe, the air is effectively prevented from leaking from the joint of the threaded connecting pipe and the third seal ring due to the fact that the third seal ring is attached to the threaded connecting pipe, the air starts to leak from the joint between the threaded connecting pipe and the bending pipe, the air flows to the seal ring along the seam between the threaded connecting pipe and the bending pipe, and the air leaks from the air outlet.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the present invention;
FIG. 3 is a schematic cross-sectional view of a stationary tube of the present invention;
FIG. 4 is a schematic cross-sectional view of a bent tube of the present invention;
FIG. 5 is a schematic view of the location of the air outlet and sensor of the present invention;
fig. 6 is a schematic view of the position of the fixing frame of the present invention.
In the figure: 1. bending the pipe; 2. a mounting frame; 3. a display; 4. an inductor; 5. sealing rings; 6. a bump; 7. a threaded connecting pipe; 8. a fixed tube; 9. a first base; 10. a gas pipe; 11. a threaded rod; 12. a side frame; 13. a second base; 14. a first seal ring; 15. a spring; 16. a second seal ring; 17. an air outlet; 18. a fixing frame; 19. a third seal ring; 20. a clasp; 21. and (3) a bracket.
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 to 6, the invention provides a gas pipeline for an intelligent gas system, which comprises a bent pipe 1 and a gas pipe 10, wherein a fixed pipe 8 is fixedly connected to the position, close to the middle, of the outer surface of the gas pipe 10, a spring 15 is fixedly connected to the inner cavity of the fixed pipe 8 and positioned on the periphery of the gas pipe 10, a threaded connecting pipe 7 is fixedly connected to the back of the spring 15, a bump 6 is fixedly arranged at equal angles at the position, close to the back, of the outer surface of the threaded connecting pipe 7, of the outer surface of the gas pipe 10, a clamping ring 20 is fixedly arranged at the position, close to the front, of the inner cavity of the threaded connecting pipe 7, a third sealing ring 19 is movably clamped to the outer surface of the clamping ring 20, a first sealing ring 14 is movably clamped to the back of the outer surface of the gas pipe 10, side frames 12 are fixedly arranged on two sides of the fixed pipe 8, a threaded rod 11 is movably clamped to the middle of the side frames 12, and fixing frames 18 are fixedly arranged on two sides of the outer surface of the bent pipe 1; the bent pipe 1 is connected with the threaded connecting pipe 7, and the threaded connecting pipe 7 is connected with the gas pipe 10, so that the purpose of fixing the position between the bent pipe 1 and the gas pipe 10 is achieved, and the purpose of fixing the pipelines is achieved.
As shown in fig. 1 to 6, a first base 9 is movably clamped at a position, close to the front, of the bottom of a gas pipe 10, a second base 13 is fixedly arranged at the bottom of a bending pipe 1, a mounting frame 2 is fixedly arranged at the top of the bending pipe 1, a support 21 is fixedly connected to the top of the mounting frame 2, the top of the other side of the support 21 is fixedly connected with a display 3, seal rings 5 are fixedly connected to positions, close to the front and the other side, of the outer surface of the bending pipe 1, of the seal rings 5, the back of a threaded connecting pipe 7, inductors 4 are fixedly arranged on the front and the other side of the mounting frame 2, an air outlet 17 is formed in the top of the seal rings 5, and a second seal ring 16 is movably clamped at a position, close to the back, of an inner cavity of the fixing pipe 8; the purpose of contraposition between the gas pipe 10 and the bending pipe 1 is achieved through the connection between the threaded rod 11 and the fixing frame 18, and the purpose of detection is achieved through the arrangement of the opening, so that gas can only flow out from one position and the arrangement of the sensor 4 at the outlet.
As shown in fig. 3 and 4, the outer surface of the third sealing ring 19 contacts with the inner wall of the threaded connecting pipe 7, the outer surface of the first sealing ring 14 contacts with the inner wall of the bending pipe 1, the threaded connecting pipe 7 is movably clamped with the gas pipe 10, two ends of the spring 15 are respectively and fixedly connected with the fixed pipe 8 and the threaded connecting pipe 7, the bending pipe 1 is movably clamped with the gas pipe 10, the inner surface of the threaded connecting pipe 7 is in threaded connection with the outer surface of the bending pipe 1, the movable track of the threaded connecting pipe 7 contacts with the clamping ring 20, the protruding blocks 6 are semi-cylindrical, the movable track of the protruding blocks 6 does not contact with the threaded rod 11, and the arc length value of the interval between the two protruding blocks 6 is less than half of the arc length value of the outer surface of the threaded connecting pipe 7; through setting up first sealing washer 14 and third sealing washer 19, third sealing washer 19 can carry out first sealing to the junction of elbow 1 and gas pipe 10, preliminary sealed effect has been guaranteed, through setting up snap ring 20, can seal the junction of screwed connection pipe 7 and gas pipe 10, leak from the junction of screwed connection pipe 7 and gas pipe 10 when having avoided leaking gas, through setting up screwed connection pipe 7, screwed connection pipe 7 and gas pipe 10 movable joint, make screwed connection pipe 7's position can be adjusted, be convenient for be connected between screwed connection pipe 7 and the pipe 1 of bending, reach fixed purpose, through setting up spring 15, spring 15 extrudes screwed connection pipe 7, effectually avoid between screwed connection pipe 7 and the pipe 1 of bending, through setting up screwed connection pipe 7, make screwed connection pipe 7 and the pipe 1 of bending between the screwed connection, effectually fix the position between elbow 1 and the gas pipe 10, through setting up lug 6, the arc length value of interval between two lugs 6 is less than the half of screwed connection pipe 7 surface long value makes lug 6 after driving screwed connection pipe 7 and rotates, the position of blocking of lug 6 can not be influenced by 11, the demand of the threaded connection pipe 1 can be adjusted by the threaded connection pipe 1 between the threaded connection pipe 6, the demand of the user can be adjusted.
As shown in fig. 3, 4 and 5, the threaded rod 11 is in threaded connection with the fixing frame 18, a spanner is arranged on the front face of the threaded rod 11, the threaded connecting pipe 7 is movably clamped with the sealing ring 5, the position of the longitudinal center line of the air outlet 17 corresponds to the position of the center line facing the air inlet 4, the inner surface of the second sealing ring 16 is contacted with the outer wall of the threaded connecting pipe 7, and the movable track of the threaded rod 11 is not contacted with the gas pipe 10; through setting up threaded rod 11, threaded connection between threaded rod 11 and the fixed pipe 8, and the diameter of threaded rod 11 is less, conveniently carry out quick location with between gas pipe 10 and the pipe of bending 1, further fixed the gas pipe 10 and bend the positional relationship between the pipe of bending 1, through setting up inductor 4, place inductor 4 in gas outlet 17 department, when the device produced gas leakage, gas can flow from gas outlet 17 department, the gaseous response of being detected by inductor 4, transfer to display 3, reach the purpose of suggestion, through setting up second sealing washer 16, make the junction between fixed pipe 8 and the screwed connection pipe 7 be in sealing state, the effectual screwed connection pipe 7 of having avoided and the fixed pipe 8 between intaking, influence the use of spring 15, through setting up threaded rod 11, the movable track of threaded rod 11 and gas pipe 10 contactless make threaded rod 11 can effectually avoid by gas pipe 10 interference when rotating, influence the result of use of threaded rod 11.
The working principle and the using flow of the invention are as follows:
when in installation, the position of the second base 13 is selected, the elbow pipe 1 is installed at the top of the second base 13, the installation frame 2 is installed at the top of the elbow pipe 1, the position of the first base 9 is adjusted to enable the first base 9 to be vertical to the opening of the elbow pipe 1, the gas pipe 10 is placed on the surface of the first base 9, the gas pipe 10 is pushed, the gas pipe 10 drives the fixed pipe 8 to move, the fixed pipe 8 drives the threaded rod 11 to move through the side frame 12, the threaded rod 11 is contacted with the fixed frame 18, the threaded rod 11 is rotated, the threaded rod 11 is gradually connected with the fixed frame 18, when the threaded rod 11 is rotated, the distance between the threaded rod 11 and the fixed frame 18 is gradually closed, the side frame 12 is extruded when the threaded rod 11 is moved to drive the side frame 12 to move, the fixed pipe 8 is driven by the side frame 12 to move, the gas pipe 10 is driven by the fixed pipe 8 to move, and the distance between the gas pipe 10 and the elbow pipe 1 is closed, the gas pipe 10 is clamped into the elbow pipe 1, at the moment, the threaded connecting pipe 7 is in threaded contact with the outer surface of the elbow pipe 1, the position of the threaded connecting pipe 7 is clamped by threads and cannot move, along with the movement of the gas pipe 10, the threaded connecting pipe 7 slides in the inner cavity of the fixed pipe 8, the spring 15 contracts, when the threaded rod 11 rotates to the bottom, the clamping between the gas pipe 10 and the elbow pipe 1 is completed, at the moment, the lug 6 is rotated, the lug 6 drives the threaded connecting pipe 7 to rotate, the threaded connecting pipe 7 is in threaded connection with the surface of the elbow pipe 1 and starts to gradually move towards the direction of the elbow pipe 1, the lug 6 is rotated until the threaded connecting pipe 7 is completely connected with the elbow pipe 1, at the moment, the threaded connecting pipe 7 is clamped into the inner wall of the seal ring 5, at the moment, the first seal ring 14 is attached to the elbow pipe 1 and the gas pipe 10, so that air leakage is effectively avoided, when the air leakage occurs, in the crack between gaseous flow and the gas pipe 10 of screwed connection pipe 7, because third sealing washer 19 is laminated with screwed connection pipe 7, the effectual junction of avoiding gaseous follow third sealing washer 19 and screwed connection pipe 7 is revealed, gaseous beginning is revealed from screwed connection pipe 7 and the junction between the pipe 1 of bending, gaseous crack between along screwed connection pipe 7 and the pipe 1 of bending flows to seal ring 5 departments, because seal ring 5's top is equipped with the opening, gaseous follow gas outlet 17 and reveal, inductor 4 is located the top of gas outlet 17 this moment, by inductor 4 response when gaseous leakage, and in conveying display 3, display 3 warning suggestion.
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.
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 (1)
1. The utility model provides a gas pipeline for intelligent gas system, includes elbow pipe (1) and gas pipe (10), its characterized in that: the gas pipe is characterized in that a fixed pipe (8) is fixedly connected to the position, close to the middle, of the outer surface of the gas pipe (10), a spring (15) is fixedly connected to the inner cavity of the fixed pipe (8) and located on the periphery of the gas pipe (10), a threaded connecting pipe (7) is fixedly connected to the back of the spring (15), a lug (6) is fixedly arranged at the position, close to the back, of the outer surface of the threaded connecting pipe (7), a clamping ring (20) is fixedly arranged at the position, close to the front, of the inner cavity of the threaded connecting pipe (7), a third sealing ring (19) is movably clamped to the outer surface of the clamping ring (20), a side frame (12) is fixedly arranged on the two sides of the outer surface of the gas pipe (10), a threaded rod (11) is movably clamped to the middle of the side frame (12), and a fixing frame (18) is fixedly arranged on the two sides of the outer surface of the bending pipe (1).
The gas pipe is characterized in that a first base (9) is movably clamped at the position, close to the front, of the bottom of the gas pipe (10), a second base (13) is fixedly arranged at the bottom of the bending pipe (1), a mounting frame (2) is fixedly arranged at the top of the bending pipe (1), a support (21) is fixedly connected to the top of the mounting frame (2), a display (3) is fixedly connected to the top of the other side of the support (21), sealing rings (5) are fixedly connected to the positions, close to the front and the other side, of the outer surface of the bending pipe (1), the sealing rings (5) are positioned at the back of a threaded connecting pipe (7), an inductor (4) is fixedly arranged at the front and the other side of the mounting frame (2), an air outlet (17) is formed in the top of the sealing rings (5), and a second sealing ring (16) is movably clamped at the position, close to the back, in an inner cavity of the fixing pipe (8).
The outer surface of the third sealing ring (19) is contacted with the inner wall of the threaded connecting pipe (7), and the outer surface of the first sealing ring (14) is contacted with the inner wall of the bending pipe (1); the threaded connecting pipe (7) is movably clamped with the gas pipe (10), and two ends of the spring (15) are fixedly connected to the fixed pipe (8) and the threaded connecting pipe (7) respectively; the bending pipe (1) is movably clamped with the gas pipe (10), the inner surface of the threaded connecting pipe (7) is in threaded connection with the outer surface of the bending pipe (1), and the movable track of the threaded connecting pipe (7) is in contact with the clamping ring (20);
the protruding blocks (6) are semi-cylindrical, the movable track of each protruding block (6) is not contacted with the threaded rod (11), and the arc length value of the interval between the two protruding blocks (6) is smaller than one half of the arc length value of the outer surface of the threaded connecting pipe (7); the threaded rod (11) is in threaded connection with the fixing frame (18), and a spanner is arranged on the front face of the threaded rod (11); the threaded connecting pipe (7) is movably clamped with the sealing ring (5), and the position of the longitudinal central line of the air outlet (17) corresponds to the position of the central line facing the sensor (4); the inner surface of the second sealing ring (16) is contacted with the outer wall of the threaded connecting pipe (7); the moving track of the threaded rod (11) is not contacted with the gas pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211389489.7A CN115899396B (en) | 2022-11-08 | 2022-11-08 | Gas pipeline for intelligent gas system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211389489.7A CN115899396B (en) | 2022-11-08 | 2022-11-08 | Gas pipeline for intelligent gas system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115899396A CN115899396A (en) | 2023-04-04 |
| CN115899396B true CN115899396B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211389489.7A Active CN115899396B (en) | 2022-11-08 | 2022-11-08 | Gas pipeline for intelligent gas system |
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| Country | Link |
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| CN (1) | CN115899396B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210069224U (en) * | 2019-04-30 | 2020-02-14 | 江苏迪威高压科技股份有限公司 | Pipeline sealing joint convenient for corner installation |
| CN210661695U (en) * | 2019-09-24 | 2020-06-02 | 安徽浙煌塑业有限公司 | Hollow winding pipe convenient to install |
| CN214274799U (en) * | 2021-02-05 | 2021-09-24 | 姚晓芳 | Intelligent pipe network intelligent gas sealing butt joint structure |
| CN215721583U (en) * | 2021-08-17 | 2022-02-01 | 浙江工业职业技术学院 | Fast-assembling elbow spare |
| CN215891510U (en) * | 2021-07-21 | 2022-02-22 | 建湖县益铭液压机械有限公司 | Flange type reducing expansion joint |
| CN217519439U (en) * | 2022-06-22 | 2022-09-30 | 济南乾照液压设备有限公司 | Adjustable hydraulic pipe joint |
-
2022
- 2022-11-08 CN CN202211389489.7A patent/CN115899396B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210069224U (en) * | 2019-04-30 | 2020-02-14 | 江苏迪威高压科技股份有限公司 | Pipeline sealing joint convenient for corner installation |
| CN210661695U (en) * | 2019-09-24 | 2020-06-02 | 安徽浙煌塑业有限公司 | Hollow winding pipe convenient to install |
| CN214274799U (en) * | 2021-02-05 | 2021-09-24 | 姚晓芳 | Intelligent pipe network intelligent gas sealing butt joint structure |
| CN215891510U (en) * | 2021-07-21 | 2022-02-22 | 建湖县益铭液压机械有限公司 | Flange type reducing expansion joint |
| CN215721583U (en) * | 2021-08-17 | 2022-02-01 | 浙江工业职业技术学院 | Fast-assembling elbow spare |
| CN217519439U (en) * | 2022-06-22 | 2022-09-30 | 济南乾照液压设备有限公司 | Adjustable hydraulic pipe joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115899396A (en) | 2023-04-04 |
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