CN110159872B - Geothermal pipeline convenient to lay - Google Patents
Geothermal pipeline convenient to lay Download PDFInfo
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- CN110159872B CN110159872B CN201910395005.1A CN201910395005A CN110159872B CN 110159872 B CN110159872 B CN 110159872B CN 201910395005 A CN201910395005 A CN 201910395005A CN 110159872 B CN110159872 B CN 110159872B
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- base
- pipeline
- block
- sleeve
- geothermal
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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
- F16L21/03—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 placed in the socket before connection
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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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides a geothermal pipeline convenient to lay. The geothermal pipeline convenient to lay comprises a pipeline body, a stop block, a sealing structure, a limiting structure and a driving structure; the stop block is welded at the end part of the pipeline body; the sealing structure comprises sealing rings, the sealing rings are clamped between two adjacent pipeline bodies, and the thickness of each sealing ring is larger than that of each pipeline body; the limiting structure comprises a clamping sleeve, a base and a clamping block, the clamping sleeve is matched with the base and abuts against the stop block, the clamping block with a rectangular structure is arranged at the end part of the clamping sleeve, and the clamping block is connected with the base in a sliding mode; the driving structure is connected to the base and comprises a driving rod, two cover plates, a groove, a steel belt, a sliding sleeve, a sliding rod, a rotating shaft, a guide wheel and a limiting block. The conveniently laid geothermal pipeline provided by the invention has the advantages of high installation efficiency, convenience in laying and good sealing performance at the pipeline joint.
Description
Technical Field
The invention relates to the technical field of geothermal equipment, in particular to a geothermal pipeline convenient to lay.
Background
With the development of science and technology, geothermal energy is applied, geothermal energy is natural heat energy extracted from the earth crust, the energy comes from lava inside the earth and exists in a thermal power form, under the conditions that the environmental awareness of people is gradually enhanced and the energy is gradually lacking, the reasonable development and utilization of geothermal resources are more and more favored by people, the geothermal energy is converted into heat energy of water flow which can be used in life and industry through a U-shaped well geothermal mixed flow heat exchange circulating system, and a geothermal water source needs to be conveyed by a geothermal pipeline in the geothermal energy utilization process.
The traditional geothermal pipeline with larger diameter adopts flange connection, so that the stress on the end part of the pipeline is uneven easily in the process of pipeline installation, the sealing performance between the pipelines is influenced, and the installation efficiency is influenced.
Therefore, there is a need to provide a new geothermal pipeline which is easy to lay and solves the above technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides the geothermal pipeline which is high in installation efficiency, convenient to lay and good in sealing performance of the pipeline joint and is convenient to lay.
The invention provides a geothermal pipeline convenient to lay, which comprises: the pipeline comprises a pipeline body, a stop block, a sealing structure, a limiting structure and a driving structure; the check block is welded at the end part of the pipeline body, the end part of the check block is flush with the end part of the pipeline body, and the check block is of an annular structure with a triangular section; the sealing structure is arranged between two adjacent pipeline bodies and comprises a sealing ring, the sealing ring is clamped between the two adjacent pipeline bodies, and the thickness of the sealing ring is greater than that of the pipeline bodies; the limiting structure used for fixing the pipeline body is abutted against the stop block and comprises a clamping sleeve, a base and a clamping block, the clamping sleeve is matched with the base and abutted against the stop block, the clamping block with a rectangular structure is arranged at the end part of the clamping sleeve, and the clamping block is connected with the base in a sliding mode; the driving structure is connected with the base and comprises a driving rod, two cover plates, a groove, a steel belt, a sliding sleeve, a sliding rod, a rotating shaft, a guide wheel and a limiting block, the base is internally provided with the groove with an arc structure, the steel belt penetrates through the groove, two ends of the steel belt are connected with the limiting blocks, the limiting block is clamped with the clamping block, the two cover plates are symmetrically arranged at the two ends of the base, the sliding sleeve is fixed on the cover plate, the sliding rod is connected with the sliding sleeve in a sliding way, the rotating shaft is fixed on the sliding rod, the guide wheel is rotationally connected with the rotating shaft, the guide wheel is abutted against the steel belt, the driving rod is penetratingly connected with the cover plate and the sliding rod, the driving rod is connected with the cover plate in a rotating mode, and the driving rod is connected with the sliding rod in a threaded mode.
Preferably, the cover plate is connected with the base through bolts.
Preferably, the outside of the pipeline body is sleeved with a heat preservation pipe.
Preferably, a mounting plate is fixed on the base, and the mounting plate is of an L-shaped structure.
Preferably, one end of the stop block, which deviates from the sealing ring, is provided with a plurality of welding holes.
Preferably, the sealing structure further comprises a reinforcing sleeve, the reinforcing sleeve is clamped with the pipeline body, and the sealing ring is clamped with the reinforcing sleeve.
Preferably, the sealing structure further comprises a reinforcing frame, the reinforcing frame is arranged inside the reinforcing sleeve, and the cross section of the reinforcing frame is triangular.
Compared with the related art, the geothermal pipeline convenient to lay provided by the invention has the following beneficial effects:
the invention provides a geothermal pipeline convenient to lay, a steel belt passes through a groove and is connected with a cutting sleeve through a limiting block, the steel belt is abutted against a guide wheel, the guide wheel is rotatably connected with a rotating shaft, a slide rod is slidably connected with a slide sleeve, a drive rod is rotatably connected with a cover plate, the drive rod is in threaded connection with the slide rod, so that after the limiting block is clamped with a clamping block at the end part of the cutting sleeve, the slide rod is driven to slide with the slide sleeve through the drive rod threads, the rotating shaft on the slide rod is matched with the guide wheel to pull the steel belt, the guide wheel is rotatably connected with the rotating shaft, the operation is more convenient and rapid, the steel belt drives the clamping block to slide with a base, and the clamping block drives the cutting sleeve to abut against the base, the cutting ferrule cooperation the base is contradicted two on the pipeline body the dog, the dog is triangle-shaped's loop configuration for the cross-section, effectively prevents two adjacent the dog is contradicted each other and is influenced the leakproofness of pipeline body, and then drive two the dog is drawn close each other, makes two the tip of pipeline body is contradicted the sealing washer, and then makes the tip atress of pipeline body is more even, makes the installation of pipeline body is dismantled more convenient and fast, has improved the sealing performance of pipeline body junction, and then makes the pipeline body is convenient for lay more.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of a geothermal pipe according to the invention, which is easy to lay;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of the portion B shown in FIG. 2;
FIG. 4 is a schematic cross-sectional view taken along line C-C of FIG. 2;
FIG. 5 is an enlarged view of the portion D shown in FIG. 4;
fig. 6 is a schematic view illustrating a connection structure of the pipe body and the stopper shown in fig. 3.
Reference numbers in the figures: 1. insulating tube, 2, limit structure, 21, cutting ferrule, 22, base, 23, fixture block, 3, drive structure, 31, actuating lever, 32, apron, 33, recess, 34, steel band, 35, sliding sleeve, 36, slide bar, 37, pivot, 38, leading wheel, 39, stopper, 4, mounting panel, 5, pipeline body, 6, seal structure, 61, reinforcement cover, 62, reinforcement frame, 63, sealing washer, 7, dog, 8, welding hole.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, wherein fig. 1 is a schematic structural diagram of a geothermal pipeline convenient to lay according to a preferred embodiment of the present invention; FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1; FIG. 3 is an enlarged view of the portion B shown in FIG. 2; FIG. 4 is a schematic cross-sectional view taken along line C-C of FIG. 2; FIG. 5 is an enlarged view of the portion D shown in FIG. 4; fig. 6 is a schematic view illustrating a connection structure of the pipe body and the stopper shown in fig. 3. Geothermal pipe convenient to lay includes: the pipeline comprises a pipeline body 5, a stop block 7, a sealing structure 6, a limiting structure 2 and a driving structure 3; the stop dog 7 is welded at the end part of the pipeline body 5, the end part of the stop dog 7 is flush with the end part of the pipeline body 5, and the stop dog 7 is of an annular structure with a triangular section; the sealing structure 6 is arranged between two adjacent pipeline bodies 5, the sealing structure 6 comprises a sealing ring 63, the sealing ring 63 is clamped between the two adjacent pipeline bodies 5, and the thickness of the sealing ring 63 is greater than that of the pipeline body 5; the limiting structure 2 for fixing the pipeline body 5 is abutted against the stop block 7, the limiting structure 2 comprises a clamping sleeve 21, a base 22 and a clamping block 23, the clamping sleeve 21 is matched with the base 22 to abut against the stop block 7, the clamping block 23 with a rectangular structure is arranged at the end part of the clamping sleeve 21, and the clamping block 23 is connected with the base 22 in a sliding manner; the driving structure 3 is connected to the base 22, the driving structure 3 includes a driving rod 31, two cover plates 32, a groove 33, a steel belt 34, a sliding sleeve 35, a sliding rod 36, a rotating shaft 37, a guide wheel 38 and a limiting block 39, the groove 33 with an arc structure is arranged inside the base 22, the steel belt 34 penetrates through the groove 33, the two ends of the steel belt 34 are connected with the limiting block 39, the limiting block 39 is clamped with the sliding block 23, the two cover plates 32 are symmetrically arranged at the two ends of the base 22, the sliding sleeve 35 is fixed on the cover plates 32, the sliding rod 36 is connected with the sliding sleeve 35, the rotating shaft 37 is fixed on the sliding rod 36, the guide wheel 38 is rotatably connected with the rotating shaft 37, the guide wheel 38 is abutted against the steel belt 34, and the driving rod 31 is penetratingly connected to the cover plates 32 and the sliding rod 36, the driving rod 31 is rotatably connected with the cover plate 32, and the driving rod 31 is in threaded connection with the sliding rod 36.
The cover plate 32 is connected with the base 22 through bolts; the cover plate 32 is detachably connected with the base 22, so that the cover plate 32 is convenient to detach, and the sliding sleeve 35, the sliding rod 36, the rotating shaft 37 and the guide wheel 38 are overhauled and maintained.
The outer part of the pipeline body 5 is sleeved with a heat preservation pipe 1; firstly, the heat preservation pipe 1 is sleeved outside the pipeline body 5, the heat preservation pipe 1 is a glass wool heat preservation pipe, energy loss of geothermal water is reduced, and then the conveying quality of the geothermal water is better.
The base 22 is fixed with a mounting plate 4, and the mounting plate 4 is of an L-shaped structure; the base 22 is vertically provided with the mounting plate 4 with an L-shaped section, so that the base 22 is fixed, and the connection stability of the pipeline body 5 is improved.
A plurality of welding holes 8 are formed in one end, away from the sealing ring 63, of the stop block 7; be equipped with a plurality ofly on the dog 7 welding hole 8, welding rod salient is avoided in the setting in welding hole 8 dog 7, and then makes dog 7 with it is inseparabler to connect between the cutting ferrule 21.
The sealing structure 6 further comprises a reinforcing sleeve 61, the reinforcing sleeve 61 is clamped with the pipeline body 5, and the sealing ring 63 is clamped with the reinforcing sleeve 61; the reinforcing sleeve 61 is convenient to position the sealing ring 63, so that the sealing ring 63 is more stably installed, and the pressure resistance of the end part of the pipeline body 5 is improved.
The sealing structure 6 further comprises a reinforcing frame 62, the reinforcing frame 62 is arranged inside the reinforcing sleeve 61, and the cross section of the reinforcing frame 62 is triangular; meanwhile, the reinforcing frame 62 with a triangular cross section is arranged in the reinforcing sleeve 61, so that the pressure resistance of the pipeline body 5 is further improved.
Respectively manufacturing 20 sets of the geothermal pipelines convenient to lay, respectively using the geothermal pipelines convenient to lay and 20 sets of the geothermal pipelines with the same specification in the same environment, and comparing the data for a plurality of times to obtain that the installation and connection efficiency of the geothermal pipelines convenient to lay is 4% higher than that of the common geothermal pipelines, and the sealing performance of the geothermal pipelines convenient to lay is 5% higher than that of the common geothermal pipelines; the stability of the geothermal pipeline convenient to lay is 6% higher than that of the common geothermal pipeline.
The working principle of the geothermal pipeline convenient to lay provided by the invention is as follows:
when in use, the heat preservation pipe 1 is sleeved outside the pipeline body 5, the heat preservation pipe 1 is a glass wool heat preservation pipe, the energy loss of geothermal water is reduced, the delivery quality of geothermal water is better, then the stop 7 is welded on the end part of the pipeline body 5, the end part of the stop 7 is flush with the end part of the pipeline body 5, the stop 7 is provided with a plurality of welding holes 8, the welding holes 8 are arranged to prevent welding rods from protruding out of the stop 7, the stop 7 is connected with the clamping sleeve 21 more tightly, then the sealing ring 63 is clamped with the reinforcing sleeve 61, two ends of the reinforcing sleeve 61 are respectively arranged inside the pipeline body 5, the sealing ring 63 is clamped between two adjacent pipeline bodies 5, and the setting of the reinforcing sleeve 61 is convenient for positioning the sealing ring 63, the installation of the sealing ring 63 is more stable, the pressure resistance of the end portion of the pipeline body 5 is improved, meanwhile, the reinforcing frame 62 with a triangular cross section is arranged inside the reinforcing sleeve 61, the pressure resistance of the pipeline body 5 is further improved, two adjacent stoppers 7 are clamped with the base 22, the steel belt 34 passes through the groove 33 and is connected to the sleeve 21 through the limiting block 39, the steel belt 34 is abutted against the guide wheel 38, the guide wheel 38 is rotatably connected with the rotating shaft 37, the sliding rod 36 is slidably connected with the sliding sleeve 35, the driving rod 31 is clamped by an inner hexagonal wrench, the driving rod 31 is rotatably connected with the cover plate 32, the driving rod 31 is in threaded connection with the sliding rod 36, and further, after the limiting block 39 is clamped with the clamping block 23 at the end portion of the sleeve 21, the slide rod 36 and the slide sleeve 35 are driven to slide through the threads of the driving rod 31, so that the rotating shaft 37 on the slide rod 36 is matched with the guide wheel 38 to pull the steel belt 34, the guide wheel 38 is rotatably connected with the rotating shaft 37, so that the operation is more convenient and faster, the steel belt 34 drives the fixture block 23 to slide with the base 22, so that the fixture block 23 drives the fixture sleeve 21 to abut against the base 22, the fixture sleeve 21 is matched with the base 22 to abut against the two stoppers 7 on the pipeline body 5, the stopper 7 is an annular structure with a triangular cross section, specifically, the triangular structure shown in fig. 4 and 6 can be an obtuse triangle, and the stopper 7 shown in fig. 4 and 6 effectively prevents the two adjacent stoppers 7 from abutting against each other to influence the sealing performance of the pipeline body 5, the two stop blocks 7 are driven to mutually approach, so that the end parts of the two pipeline bodies 5 are abutted against the sealing ring 63, the end parts of the pipeline bodies 5 are stressed more uniformly, the pipeline bodies 5 are more convenient and rapid to mount and dismount, the sealing performance of the joint of the pipeline bodies 5 is improved, and the pipeline bodies 5 are more convenient to lay; the cover plate 32 and the base 22 are detachably connected, so that the cover plate 32 is convenient to detach, the sliding sleeve 35, the sliding rod 36, the rotating shaft 37 and the guide wheel 38 are overhauled and maintained, the base 22 is vertically provided with the mounting plate 4 with an L-shaped cross section, the base 22 is fixed, and the connection stability of the pipeline body 5 is improved.
Compared with the related art, the geothermal pipeline convenient to lay provided by the invention has the following beneficial effects:
the invention provides a geothermal pipeline convenient to lay, a steel belt 34 passes through a groove 33 and is connected to a cutting sleeve 21 through a limiting block 39, the steel belt 34 is abutted against a guide wheel 38, the guide wheel 38 is rotationally connected with a rotating shaft 37, a sliding rod 36 is slidably connected with a sliding sleeve 35, a driving rod 31 is rotationally connected with a cover plate 32, the driving rod 31 is in threaded connection with the sliding rod 36, so that after the limiting block 39 is clamped with a clamping block 23 at the end part of the cutting sleeve 21, the driving rod 31 is in threaded connection with the sliding sleeve 35 to slide, the rotating shaft 37 on the sliding rod 36 is matched with the guide wheel 38 to pull the steel belt 34, the guide wheel 38 is rotationally connected with the rotating shaft 37, the operation is more convenient and rapid, the steel belt 34 drives the clamping block 23 to slide with a base 22, and then make fixture block 23 drive cutting ferrule 21 contradicts base 22, cutting ferrule 21 cooperates base 22 contradicts two dog 7 on the pipeline body 5 effectively prevents two adjacent dog 7 contradicts each other and influences the leakproofness of pipeline body 5, and then drives two dog 7 draws close each other, makes two the tip of pipeline body 5 is contradicted sealing washer 63, and then makes the tip atress of pipeline body 5 is more even, makes the installation of pipeline body 5 is dismantled more convenient and fast, has improved the sealing performance of pipeline body 5 junction, and then makes pipeline body 5 is convenient for lay more.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A geothermal pipe for facilitating laying, comprising:
a pipe body (5);
the check block (7) is welded at the end part of the pipeline body (5), the end part of the check block (7) is flush with the end part of the pipeline body (5), and the check block (7) is of an annular structure with a triangular section;
the sealing structure (6) is arranged between two adjacent pipeline bodies (5), the sealing structure (6) comprises a sealing ring (63), the sealing ring (63) is clamped between the two adjacent pipeline bodies (5), and the thickness of the sealing ring (63) is larger than that of the pipeline bodies (5);
the limiting structure (2) is used for fixing the limiting structure (2) of the pipeline body (5) and abutted against the stop block (7), the limiting structure (2) comprises a clamping sleeve (21), a base (22) and a clamping block (23), the clamping sleeve (21) is matched with the base (22) and abutted against the stop block (7), the clamping block (23) with a rectangular structure is arranged at the end part of the clamping sleeve (21), and the clamping block (23) is in sliding connection with the base (22);
the driving structure (3) is connected to the base (22), the driving structure (3) comprises a driving rod (31), two cover plates (32), a groove (33), a steel belt (34), a sliding sleeve (35), a sliding rod (36), a rotating shaft (37), a guide wheel (38) and a limiting block (39), the groove (33) with an arc-shaped structure is arranged inside the base (22), the steel belt (34) penetrates through the groove (33), the limiting block (39) is connected to the two ends of the steel belt (34), the limiting block (39) and the clamping block (23) are clamped, the two cover plates (32) are symmetrically arranged at the two ends of the base (22), the sliding sleeve (35) is fixed on the cover plates (32), the sliding rod (36) and the sliding sleeve (35) are in sliding connection, the rotating shaft (37) is fixed on the sliding rod (36), leading wheel (38) with rotate between pivot (37) and be connected, leading wheel (38) with steel band (34) are contradicted, actuating lever (31) through connection in apron (32) with slide bar (36), actuating lever (31) with rotate between apron (32) and be connected, actuating lever (31) with threaded connection between slide bar (36).
2. A geothermal pipe to facilitate laying according to claim 1, wherein the cover plate (32) is bolted to the base (22).
3. A geothermal pipe to facilitate laying according to claim 1, characterized in that the outside of the pipe body (5) is sleeved with a thermal insulating pipe (1).
4. A geothermal pipe to facilitate laying according to claim 1, characterised in that a mounting plate (4) is fixed to the base (22), the mounting plate (4) being of L-shaped configuration.
5. A geothermal pipe to facilitate laying according to claim 1, characterised in that the end of the block (7) facing away from the sealing ring (63) is provided with a plurality of welding holes (8).
6. A geothermal pipe to facilitate laying according to claim 1, wherein the sealing structure (6) further comprises a reinforcing sleeve (61), the reinforcing sleeve (61) is snap fitted with the pipe body (5), and the sealing ring (63) is snap fitted with the reinforcing sleeve (61).
7. A geothermal pipeline to facilitate laying according to claim 6, wherein the sealing structure (6) further comprises a strengthening frame (62), the strengthening frame (62) is arranged inside the strengthening sleeve (61), the cross section of the strengthening frame (62) is triangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910395005.1A CN110159872B (en) | 2019-05-13 | 2019-05-13 | Geothermal pipeline convenient to lay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910395005.1A CN110159872B (en) | 2019-05-13 | 2019-05-13 | Geothermal pipeline convenient to lay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110159872A CN110159872A (en) | 2019-08-23 |
| CN110159872B true CN110159872B (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910395005.1A Active CN110159872B (en) | 2019-05-13 | 2019-05-13 | Geothermal pipeline convenient to lay |
Country Status (1)
| Country | Link |
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| CN (1) | CN110159872B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB308850A (en) * | 1928-01-12 | 1929-04-04 | Leonard Heck | Improvements in and relating to devices for fixing a hose or other similar device toa pipe by means of a band |
| JP2001355772A (en) * | 2000-06-14 | 2001-12-26 | Sekisui Chem Co Ltd | Member for flange connection, and flange connection structure |
| CN101358672A (en) * | 2007-07-31 | 2009-02-04 | 王周城 | Hoop-clamping connecting pipe fitting for external convex pipe |
| JP2014523999A (en) * | 2011-06-15 | 2014-09-18 | アミアド ウォーター システムズ リミテッド | Tubular member coupler |
| CN103174891B (en) * | 2013-03-28 | 2015-04-29 | 长江南京航道工程局 | Quick connector of cutter suction dredger and water-borne pipe |
| CN107289227B (en) * | 2016-03-31 | 2019-06-25 | 宝山钢铁股份有限公司 | Worm type steel belt stringing device |
| CN208074283U (en) * | 2018-04-08 | 2018-11-09 | 新疆八一钢铁股份有限公司 | A kind of steel band tension-type pipe clamp |
| CN208417758U (en) * | 2018-05-04 | 2019-01-22 | 张恩海 | A kind of road and bridge pipeline support equipment |
| CN208687166U (en) * | 2018-08-11 | 2019-04-02 | 福建省海耀工程管道制造有限责任公司 | A kind of special-shaped opposite opened Snap ring structure for water pipe connection |
| CN109114325A (en) * | 2018-10-25 | 2019-01-01 | 天津市源翔市政工程有限公司 | A kind of gas pipeline abutting joint structure |
-
2019
- 2019-05-13 CN CN201910395005.1A patent/CN110159872B/en active Active
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