CN112944088B - Connecting structure and mounting method suitable for plastic pipelines made of different materials - Google Patents
Connecting structure and mounting method suitable for plastic pipelines made of different materials Download PDFInfo
- Publication number
- CN112944088B CN112944088B CN202011410230.7A CN202011410230A CN112944088B CN 112944088 B CN112944088 B CN 112944088B CN 202011410230 A CN202011410230 A CN 202011410230A CN 112944088 B CN112944088 B CN 112944088B
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- Prior art keywords
- sleeve
- pipeline
- connection
- sealing
- locking ring
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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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/04—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/02—Belling or enlarging, e.g. combined with forming a groove
- B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention relates to the field of pipeline connection, in particular to a connecting structure suitable for plastic pipelines made of different materials. The connecting structure is suitable for plastic pipelines made of different materials and used for connecting a first pipeline and a second pipeline, the first pipeline and the second pipeline are processed through pier edges and are arranged on a first sleeve at the end part of the first pipeline, a second sleeve at the end part of the second pipeline and used for being connected with the first sleeve and a connecting assembly of the second sleeve, the connecting assembly comprises a connecting sleeve and a locking ring, the connecting sleeve is in sliding connection with the locking ring, the connecting sleeve is in threaded connection with the first sleeve, and the locking ring is in threaded connection with the second sleeve. Through the coupling assembling with the threaded connection of first sleeve and second sleeve respectively, make this connection structure have the little, connect convenient beneficial effect of size to reduce the well head size and the excavation cost of excavation.
Description
Technical Field
The invention relates to the field of pipeline connection, in particular to a connecting structure and an installation method suitable for plastic pipelines made of different materials.
Background
At present, the plastic solid-wall pipe is mainly connected by hot melting and electric melting, but in the deep geothermal field, because the pipe is vertically laid, the temperature of the conveyed medium is up to 90 ℃, when the PERT pipe cannot be applied, the PERT pipe is conveyed in a mode of connecting the PERT pipe and the PVDF pipe, and the PVDF pipe conveys the medium with higher deep temperature. Because the material is different can't adopt hot melt and electric smelting to connect, the intensity of these two kinds of connected modes is also far away not enough moreover, can't bear the partial dead weight of tubular product. Please refer to fig. 1, chinese utility model patent with application number CN201920469710.7 discloses a pipe connection structure for single-well manual pressurizing recharge for geothermal water well, which comprises a round cover (1), and is characterized in that: be equipped with round hole (2) in dome (1), pipeline (3) have been installed to the port of round hole (2), be equipped with awl annular (4) along the portion in the port of dome (1), insert soft ring (5) in dome (1), the outer wall of soft ring (5) is equipped with awl ring (6), awl ring (6) insert awl annular (4), ring plate (9) have been installed along the portion outward to the port of dome (1), the annular evenly is equipped with mounting hole (10) in ring plate (9), the interpolation of mounting hole (10) is equipped with bolt (11), the upper end that mounting hole (10) and bolt (11) were inserted in bolt (11) is locked through nut (12).
In the prior art, the flange connection is adopted, so that the connection is reliable, and the strength can meet the requirements of working conditions, but the radial size of a flange piece is large, the size of a well mouth to be excavated is large, and the excavation cost is high; the damage of the PERT solid-wall pipe can be caused by the buckling and pressing form of the metal pipe, and the pipe is easily thinned and broken when the dead weight of the pipe is borne.
Disclosure of Invention
The invention aims to provide a connecting structure which is small in size, convenient to connect and capable of saving excavation cost and is suitable for plastic pipelines made of different materials.
In order to achieve the above advantages, the connection structure suitable for plastic pipelines made of different materials provided by the invention is used for connecting a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are processed by edge upsetting, and the connection structure comprises a first sleeve sleeved at the end part of the first pipeline, a second sleeve sleeved at the end part of the second pipeline, and a connection assembly for connecting the first sleeve and the second sleeve, wherein the connection assembly comprises a connection sleeve and a lock ring, the connection sleeve is in sliding connection with the lock ring, the connection sleeve is in threaded connection with the first sleeve, and the lock ring is in threaded connection with the second sleeve.
In one embodiment of the invention, the first pipe and the second pipe are provided with pier edges, and the first sleeve and the second sleeve are sleeved outside the pier edges.
In one embodiment of the invention, the first sleeve and the second sleeve have a taper of 5 ° to 15 °.
In one embodiment of the invention, the first sleeve and the second sleeve each have a chamfer with a length of 100-300mm.
In an embodiment of the present invention, two ends of the connecting sleeve are provided with a first sealing end and a second sealing end, the first sleeve is provided with a first sealing ring corresponding to the first sealing end, and the second sealing end is provided with a second sealing ring corresponding to the second sleeve.
In one embodiment of the invention, the first tubing is PVDF and the second tubing is PERT.
In one embodiment of the invention, the connecting sleeve is provided with a tapered through hole which is gradually reduced from the second pipeline to the first pipeline.
In one embodiment of the invention, the outer surface of the locking collar is provided with a plurality of grooves.
In one embodiment of the invention, the outer surface of the connecting sleeve is provided with an outer octagonal shape.
The invention provides an installation method of a connecting structure suitable for plastic pipelines made of different materials, which comprises the following steps:
1. respectively sleeving a first sleeve and a second sleeve into a first pipeline and a second pipeline, and reserving pipeline end parts with the lengths of 200-500 mm;
2. preheating the reserved end part of the pipeline at 180-230 ℃, performing pier edge treatment, and placing for 24 hours, wherein the error between the bevel angle of the pier edge and the bevel angle of the sleeve is within +/-1 ℃;
3. the locking ring and the connecting sleeve are mutually sleeved, the first sleeve and the pier edge of the first pipeline are relatively tensioned, the first sealing ring is placed in the first sleeve, and finally the connecting sleeve is screwed down to enable the first sleeve to be hermetically connected with the first sealing end, namely the connection of the first pipeline is completed
4. When the second pipeline is connected, the pier edge of the second sleeve and the pier edge of the second pipeline are relatively tensioned, the second seal is placed at the second seal end, the lock ring is screwed by the crescent wrench, the second sleeve is hermetically connected with the second seal end, and finally the connection of the two pipelines is completed until the first pipeline and the second pipeline cannot rotate relatively.
According to the invention, the connecting components are respectively connected with the threads of the first sleeve and the second sleeve, so that the connecting structure has the beneficial effects of small size and convenience in connection, and the size of an excavated wellhead and the excavation cost are reduced.
Drawings
Fig. 1 is a schematic structural diagram of a pipe connection structure for single-well artificial pressurization recharging of a geothermal water well in the prior art.
Fig. 2 is a schematic structural diagram of a connection structure suitable for plastic pipes made of different materials according to a first embodiment of the present invention.
Fig. 3 is a sectional view of the connection structure suitable for plastic pipes made of different materials in fig. 2.
Fig. 4 is a front view showing a connection structure for plastic pipes of different materials according to a second embodiment of the present invention.
Fig. 5 is a sectional view of a third embodiment of the connection structure for plastic pipes made of different materials according to the present invention.
Fig. 6 is a sectional view of a connection structure suitable for plastic pipes of different materials according to a fourth embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given of specific embodiments, structures, characteristics and effects thereof according to the present invention with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 2 and 3, a connection structure suitable for plastic pipes of different materials according to a first embodiment of the present invention is used for connecting a first pipe 1 and a second pipe 2, wherein both the first pipe 1 and the second pipe 2 are processed by edge upsetting, and includes a first sleeve 3 sleeved on an end of the first pipe 1, a second sleeve 4 sleeved on an end of the second pipe 2, and a connection assembly 5 for connecting the first sleeve 3 and the second sleeve 4, wherein the connection assembly 5 includes a connection sleeve 51 and a lock ring 52, the connection sleeve 51 is slidably connected to the lock ring 52, the connection sleeve 51 is threadedly connected to the first sleeve 3, and the lock ring 52 is threadedly connected to the second sleeve 4.
The first pipeline 1 and the second pipeline 2 are both provided with a pier edge a, and the first sleeve 3 and the second sleeve 4 are sleeved outside the pier edge a. The end portions of the first and second pipes 1 and 2 are subjected to edge upsetting by an edge upsetting machine. The first pipe 1 is PVDF and the second pipe 2 is PERT.
The first sleeve 3 and the second sleeve 4 both have taper angles of 5-15 degrees. The first sleeve 3 and the second sleeve 4 are both provided with a bevel b, and the length of the bevel b is 100-300mm.
The two ends of the connecting sleeve 51 are provided with a first sealing end 511 and a second sealing end 512, the first sleeve 3 is provided with a first sealing ring 6 corresponding to the first sealing end 511, and the second sealing end 512 is provided with a second sealing ring 7 corresponding to the second sleeve 4. The first sealing end 511 and the second sealing end 512 are respectively connected with the first sleeve 3 and the second sleeve 4 in a sealing manner.
The connection sleeve 51 is provided with a tapered through hole 513, and the tapered through hole 513 is gradually reduced from the second pipe 2 to the first pipe 1. The pier edge a of the first pipe 1 is larger than the pier edge a of the second pipe 2. The tapered through holes 513 correspond to the first and second pipes 1 and 2, respectively. The lock ring 52 is provided with a plurality of grooves 521 on its outer surface. During the connection with the first sleeve 3, the recess 521 facilitates the screwing by means of a crescent wrench.
The installation method of the connecting structure suitable for the plastic pipelines made of different materials comprises the following steps:
1. respectively sleeving a first sleeve 3 and a second sleeve 4 into the first pipeline 1 and the second pipeline 2, and reserving pipeline ends with the lengths of 200-500 mm;
2. preheating the reserved end part of the pipeline at 180-230 ℃, carrying out pier edge treatment, keeping the error between the angle b of the inclined plane of the pier edge a and the angle b of the inclined plane of the sleeve within +/-1 ℃, and standing for 24 hours;
3. sleeving the locking ring 52 and the connecting sleeve 51 with each other, tensioning the first sleeve 3 and the pier edge a of the first pipeline 1 relatively, placing the first sealing ring 6 on the first sleeve 3, and finally screwing the connecting sleeve 51 to hermetically connect the first sleeve 3 and the first sealing end 511, thereby completing the connection of the first pipeline 1
4. When the second pipeline 2 is connected, the second sleeve 4 and the pier edge a of the second pipeline 2 are relatively tensioned, the second seal is placed at the second seal end 512, the lock ring 52 is screwed by a crescent wrench, the second sleeve 4 and the second seal end 512 are hermetically connected, and finally the first pipeline 1 and the second pipeline 2 cannot relatively rotate, so that the connection of the two pipelines is completed.
Referring to fig. 4, in the second embodiment of the present invention, the outer surface of the connecting sleeve 51 has an outer octagonal shape 514. The outer octagon 514 facilitates tightening by a wrench during connection with the first sleeve 3.
Referring to fig. 5, in a third embodiment of the present invention, guide surfaces 522 are provided at both ends of the locking ring 52. The guide surface 522 helps to reduce damage to the locking ring 52 during pipe movement and facilitates movement.
Referring to fig. 6, in a fourth embodiment of the present invention, step four further includes: the first sleeve 3, the second sleeve 4 and the connecting component 5 are sleeved with a sheath 8. The sheath 8 can prevent the connecting component 5 from loosening and can also improve the sealing effect.
According to the invention, the first pipeline 1 and the second pipeline 2 which are processed by the pier edge are used, so that the strength of the joint of the connecting structure is improved, and the deformation or the breakage of the joint is avoided.
In the invention, the first sleeve 3 and the second sleeve 4 with the tapers are both used for facilitating the movement of the connecting structure, thereby avoiding the damage to the connecting component 5 in the sinking or rising process.
According to the invention, the connecting component 5 is respectively in threaded connection with the first sleeve 3 and the second sleeve 4, so that the connecting structure has the beneficial effects of small size and convenience in connection, and the size of an excavated wellhead and the excavation cost are reduced.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A connecting structure suitable for plastic pipelines made of different materials is characterized by being used for connecting a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are subjected to edge upsetting treatment and comprise a first sleeve sleeved at the end part of the first pipeline, a second sleeve sleeved at the end part of the second pipeline and a connecting assembly used for connecting the first sleeve and the second sleeve, the connecting assembly comprises a connecting sleeve and a locking ring, the connecting sleeve and the locking ring are in sliding connection, the connecting sleeve comprises a large-diameter end, a small-diameter end and a step surface arranged between the large-diameter end and the small-diameter end, the large-diameter end is sleeved inside the locking ring, an annular convex shoulder abutted against the step surface is inwards arranged at one end of the locking ring, the small-diameter end is sleeved inside the first sleeve, the connecting sleeve is in threaded connection with the first sleeve, the locking ring is sleeved outside the second sleeve, and the locking ring is in threaded connection with the second sleeve; the two ends of the connecting sleeve are provided with a first sealing end and a second sealing end, the first sleeve is provided with a first sealing ring corresponding to the first sealing end, and the second sealing end is provided with a second sealing ring corresponding to the second sleeve.
2. The connection structure suitable for different material plastic pipelines according to claim 1, wherein the first pipeline and the second pipeline are provided with pier edges, and the first sleeve and the second sleeve are sleeved outside the pier edges.
3. The connecting structure suitable for plastic pipelines made of different materials according to claim 1, wherein the first sleeve and the second sleeve are provided with taper angles, and the taper angles are 5-15 degrees.
4. A connection structure suitable for different material plastic pipelines according to claim 1, wherein the first sleeve and the second sleeve are provided with inclined planes, and the length of each inclined plane is 100-300mm.
5. The connection structure of claim 1, wherein the first pipe is PVDF and the second pipe is PERT.
6. A connection structure suitable for different material plastic pipes according to claim 1, wherein the connection sleeve is provided with a tapered through hole, and the tapered through hole is gradually reduced from the second pipe to the first pipe.
7. A connection structure for plastic pipes of different materials as claimed in claim 1, wherein the outer surface of the locking ring is provided with a plurality of grooves.
8. The connecting structure suitable for plastic pipelines made of different materials according to claim 1, wherein the outer surface of the connecting sleeve is provided with an outer octagonal shape.
9. A method for installing a connection structure adapted to plastic pipes of different materials according to any one of claims 1 to 8, comprising the steps of:
1. respectively sleeving the first sleeve and the second sleeve into the first pipeline and the second pipeline, and reserving the end parts of the pipelines with the lengths of 200-500 mm;
2. preheating the reserved end part of the pipeline at 180-230 ℃, performing pier edge treatment, and placing for 24 hours, wherein the error between the bevel angle of the pier edge and the bevel angle of the sleeve is within +/-1 ℃;
3. sleeving the lock ring and the connecting sleeve mutually, tensioning the first sleeve and the pier edge of the first pipeline relatively, placing a first sealing ring on the first sleeve, and finally screwing the connecting sleeve to enable the first sleeve to be connected with the first sealing end in a sealing manner, namely, the connection of the first pipeline is completed;
4. when the second pipeline is connected, the pier edge of the second sleeve and the pier edge of the second pipeline are relatively tensioned, the second sealing ring is placed at the second sealing end, the locking ring is screwed by the crescent wrench, the second sleeve and the second sealing end are hermetically connected, and finally the connection of the two pipelines is completed until the first pipeline and the second pipeline cannot rotate relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011410230.7A CN112944088B (en) | 2020-12-04 | 2020-12-04 | Connecting structure and mounting method suitable for plastic pipelines made of different materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011410230.7A CN112944088B (en) | 2020-12-04 | 2020-12-04 | Connecting structure and mounting method suitable for plastic pipelines made of different materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112944088A CN112944088A (en) | 2021-06-11 |
| CN112944088B true CN112944088B (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011410230.7A Active CN112944088B (en) | 2020-12-04 | 2020-12-04 | Connecting structure and mounting method suitable for plastic pipelines made of different materials |
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| Country | Link |
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| CN (1) | CN112944088B (en) |
Citations (9)
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|---|---|---|---|---|
| US3831983A (en) * | 1973-07-20 | 1974-08-27 | C Stickler | Plumbing connection |
| JPH1182830A (en) * | 1997-09-04 | 1999-03-26 | Sanko Jido Kiki Kk | Piping joint |
| CN2781148Y (en) * | 2005-03-29 | 2006-05-17 | 王新德 | Connection pipe fitting of water-meter pipe |
| CN2916309Y (en) * | 2006-07-12 | 2007-06-27 | 王志森 | Stainless steel pipe joint |
| CN102313086A (en) * | 2011-08-23 | 2012-01-11 | 重庆顾地塑胶电器有限公司 | Inner expansion connecting structure for screw sleeve type steel and plastic composite pipe |
| CN203384570U (en) * | 2013-06-30 | 2014-01-08 | 浙江永强石英科技发展股份有限公司 | Connecting structure for polytetrafluoroethylene hose and glass tube |
| CN106195481A (en) * | 2016-10-08 | 2016-12-07 | 威海纳川管材有限公司 | Nonmetal pipeline joint |
| CN211779516U (en) * | 2020-03-12 | 2020-10-27 | 山东东宏管业股份有限公司 | Steel wire pipe bimetal flange connection structure |
| CN211951754U (en) * | 2019-10-22 | 2020-11-17 | 临海伟星新型建材有限公司 | Tensile strength reinforcing device suitable for butt welding connection of composite pipes |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH184949A (en) * | 1935-12-31 | 1936-06-30 | Eisen & Stahlwerke Ag Vormals Georg Fischer | Central screw connection for pipes without thread. |
| GB762967A (en) * | 1953-12-02 | 1956-12-05 | Sidney Pepper | Joint for use with plastic piping |
-
2020
- 2020-12-04 CN CN202011410230.7A patent/CN112944088B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3831983A (en) * | 1973-07-20 | 1974-08-27 | C Stickler | Plumbing connection |
| JPH1182830A (en) * | 1997-09-04 | 1999-03-26 | Sanko Jido Kiki Kk | Piping joint |
| CN2781148Y (en) * | 2005-03-29 | 2006-05-17 | 王新德 | Connection pipe fitting of water-meter pipe |
| CN2916309Y (en) * | 2006-07-12 | 2007-06-27 | 王志森 | Stainless steel pipe joint |
| CN102313086A (en) * | 2011-08-23 | 2012-01-11 | 重庆顾地塑胶电器有限公司 | Inner expansion connecting structure for screw sleeve type steel and plastic composite pipe |
| CN203384570U (en) * | 2013-06-30 | 2014-01-08 | 浙江永强石英科技发展股份有限公司 | Connecting structure for polytetrafluoroethylene hose and glass tube |
| CN106195481A (en) * | 2016-10-08 | 2016-12-07 | 威海纳川管材有限公司 | Nonmetal pipeline joint |
| CN211951754U (en) * | 2019-10-22 | 2020-11-17 | 临海伟星新型建材有限公司 | Tensile strength reinforcing device suitable for butt welding connection of composite pipes |
| CN211779516U (en) * | 2020-03-12 | 2020-10-27 | 山东东宏管业股份有限公司 | Steel wire pipe bimetal flange connection structure |
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| CN112944088A (en) | 2021-06-11 |
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