CN210153386U - Steel-plastic adapter based on 90-degree plastic bent pipe - Google Patents
Steel-plastic adapter based on 90-degree plastic bent pipe Download PDFInfo
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- CN210153386U CN210153386U CN201920934272.7U CN201920934272U CN210153386U CN 210153386 U CN210153386 U CN 210153386U CN 201920934272 U CN201920934272 U CN 201920934272U CN 210153386 U CN210153386 U CN 210153386U
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Abstract
The utility model discloses a steel-plastic adapter based on a 90-degree plastic bent pipe, which comprises a steel linking pipe arranged on the ground side and connected with a steel pipe; the bottom of the steel connecting pipe is fixedly connected with a 90-degree plastic crooked pipe through a connecting part, the 90-degree plastic crooked pipe is arranged in the ground and is connected with a plastic pipe, and the other end of the 90-degree plastic crooked pipe extends out of the ground and is fixedly connected with the steel connecting pipe; the connecting part comprises a chamfer thread arranged on the outer wall of the bottom of the steel connecting pipe, and a stop block is fixedly connected to the upper side of the chamfer thread; the bottom of the steel connecting pipe is fixedly arranged in the 90-degree plastic inclined pipe, and the top wall of the 90-degree plastic inclined pipe is tightly attached to the stop block. The utility model avoids the steel pipe being embedded in the ground, and can effectively reduce the risk caused by gas leakage due to the corrosion of the steel pipe of the steel-plastic adapter; the safety of the steel-plastic adapter is improved.
Description
Technical Field
The utility model relates to a pipeline annex especially relates to a crossover sub is moulded to steel based on 90 plastics return bends.
Background
The existing gas pipe made of polyethylene raw materials is widely applied in China, and a steel-plastic transition joint for connecting a polyethylene pipeline and a steel part is indispensable. In engineering construction, the problem of connection between a plastic pipe and a steel pipe is often encountered. At present, the connection by adopting a steel-plastic transition method is a common mode. Most of the existing steel-plastic transition pipes adopt 90-degree steel inclined pipes, one part of the 90-degree steel inclined pipes is buried in soil, and although anticorrosion treatment is carried out on the 90-degree steel inclined pipes, the 90-degree steel inclined pipes still have the phenomenon of being corroded after being used for about ten years; the corroded part of the 90-degree steel inclined pipe can cause gas leakage, so that potential safety hazards exist.
Disclosure of Invention
Aiming at the technical problem, the technical scheme provides the steel-plastic adapter based on the 90-degree plastic bent pipe, and the problem can be effectively solved.
The utility model discloses a following technical scheme realizes:
a steel-plastic conversion joint based on a 90-degree plastic bent pipe comprises a steel connection pipe which is arranged on the ground side and connected with a steel pipe; the bottom of the steel connecting pipe is fixedly connected with a 90-degree plastic crooked pipe through a connecting part, the 90-degree plastic crooked pipe is arranged in the ground and is connected with a plastic pipe, and the other end of the 90-degree plastic crooked pipe extends out of the ground and is fixedly connected with the steel connecting pipe; the connecting part comprises threads arranged on the outer wall of the bottom of the steel connecting pipe, and a stop block is fixedly connected to the upper side of the threads; the bottom of the steel connecting pipe is fixedly arranged in the 90-degree plastic inclined pipe, and the top wall of the 90-degree plastic inclined pipe is tightly attached to the stop block.
Furthermore, the outer diameter of the steel connecting pipe is consistent with the inner diameter of the top of the 90-degree plastic inclined pipe, and the bottom of the steel connecting pipe is clamped on the inner side of the top of the 90-degree plastic inclined pipe through friction force.
Furthermore, the threads arranged at the bottom of the steel connecting pipe are chamfer threads, and the tip of the chamfer threads face to the 90-degree plastic inclined pipe, so that the steel connecting pipe can be conveniently pressed into the inner side of the 90-degree plastic inclined pipe by a press; the direction of the inverted opening is a stop block, so that the friction force between the steel connecting pipe and the 90-degree plastic inclined pipe is increased, and the steel connecting pipe and the 90-degree plastic inclined pipe are prevented from falling off.
Furthermore, a groove is formed between the stop block and the chamfer threads, and a sealing ring is sleeved in the groove, so that the steel connecting pipe and the 90-degree plastic askew pipe can be attached more tightly.
Further, the outer diameter of the stop block is consistent with that of the 90-degree plastic crooked pipe; a steel sleeve is sleeved on the outer side of the connecting part of the stop dog and the 90-degree plastic askew pipe. Due to the design of the steel sleeve, the integrity, the tightness and the sealing performance between the steel connecting pipe and the 90-degree plastic crooked pipe are improved, and the performance between the steel connecting pipe and the 90-degree plastic crooked pipe is better.
Furthermore, the length of the steel sleeve is the sum of the length of the steel connecting pipe inserted into the 90-degree plastic inclined pipe at the bottom and the thickness of the stop block, and the inner diameter of the steel sleeve is consistent with the outer diameters of the stop block and the 90-degree plastic inclined pipe.
Further, an insulating layer wraps the outer side of the steel sleeve; the top of the insulating layer is arranged on the steel connecting pipe, and the bottom of the insulating layer is arranged on the 90-degree plastic inclined pipe. The insulating layer is designed, so that the insulativity of the steel connecting pipe is increased, and the problem that the steel connecting pipe close to the ground is punctured after being subjected to electric shock in rainy season to influence the safety of a pipeline can be avoided; further increases the integrity, the tightness and the sealing performance between the steel connecting pipe and the 90-degree plastic askew pipe,
further, the insulating layer is made of a plastic film made of PE materials.
Advantageous effects
The utility model provides a pair of change over joint is moulded to steel based on 90 plastics return bends, compare with prior art, it has following beneficial effect:
(1) the 90-degree plastic bent pipe is adopted, one end of the 90-degree plastic bent pipe is embedded in the ground and connected with the plastic pipe, and the other end of the 90-degree plastic bent pipe extends out of the ground and is fixedly connected with the steel connecting pipe, so that the steel pipe is prevented from being embedded in the ground, and the risk caused by gas leakage due to corrosion of the steel pipe of the steel-plastic conversion joint can be effectively reduced; the safety of the steel-plastic adapter is improved.
(2) The arrangement of the chamfer threads at the bottom of the steel connecting pipe increases the contact area of the connecting part, increases the friction force between the bottom of the steel connecting pipe and the 90-degree plastic askew pipe, and increases the stability of the connecting part; the design that the back cut of chamfer screw thread is towards the dog, when processing, be convenient for press 90 steel skew pipes with the plastics adapter tube. In addition, the sealing performance between the chamfer threads in the connecting part and the inner wall of the 90-degree plastic askew pipe is improved by the design of the sealing ring, so that the connecting part is connected more tightly.
(3) The steel sleeve is arranged, so that the stability and the sealing performance of the connecting part are improved; the integrity, the tightness and the sealing performance between the steel connecting pipe and the 90-degree plastic inclined pipe are improved, so that the performance between the steel connecting pipe and the 90-degree plastic inclined pipe is better.
(4) The arrangement of the insulating layer can effectively isolate the electrification of the steel connecting pipe part; if accumulated water submerges the steel connecting pipe in rainy season, and the accumulated water is in a current state, the insulating layer can effectively avoid the electric shock of the current in the accumulated water to the steel connecting pipe, protect the steel connecting pipe and prevent the steel connecting pipe from being broken down by the current; the safety of the technical scheme is further improved.
(5) The arrangement of the insulating layer further increases the stability and the sealing property of the connecting part; in addition, the insulating layer adopts the PE plastic film, so that the corrosion resistance of the steel pipe part is improved and the service life of the steel-plastic adapter is prolonged besides the insulating effect.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the steel joint pipe of the present invention.
Reference numbers in the drawings: 1-steel connecting pipe, 11-stop block, 12-thread (chamfer thread), 13-sealing ring, 2-90 degree plastic inclined pipe, 3-connecting part, 31-steel sleeve and 32-insulating layer.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some, but not all embodiments of the invention. Under the prerequisite that does not deviate from the design concept of the utility model, the ordinary person in the art should fall into the protection scope of the utility model to the various changes and improvements that the technical scheme of the utility model made.
Example (b):
as shown in fig. 1-2, a steel-plastic crossover joint based on a 90 ° plastic elbow comprises a steel adapter pipe 1 arranged on the ground side to be engaged with a steel pipe; the bottom of the steel connecting pipe 1 is fixedly connected with a 90-degree plastic crooked pipe 2 through a connecting part 3, one end of the 90-degree plastic crooked pipe 2 is arranged in the ground and is connected with a plastic pipe, and the other end of the 90-degree plastic crooked pipe extends out of the ground and is fixedly connected with the steel connecting pipe 1.
The connecting part 3 comprises a thread 12 arranged on the outer wall of the bottom of the steel connecting pipe 1, and a stop block 11 is fixedly connected to the upper side of the thread 12; in the embodiment, the thread 12 is a chamfer thread 12, the tip of the chamfer thread 12 faces to the plastic askew pipe 2 by 90 degrees, and the inverted opening faces to the stop 11; a groove is formed between the stop block 11 and the chamfer threads 12, and a sealing ring 13 is sleeved in the groove, so that the steel connecting pipe 1 and the 90-degree plastic askew pipe 2 can be attached more tightly.
The outer diameter of the steel connecting pipe 1 is consistent with the inner diameter of the top of the 90-degree plastic crooked pipe 2, the bottom of the steel connecting pipe 1 is pressed into the top of the 90-degree plastic crooked pipe 2 through a press machine until the top wall of the 90-degree plastic crooked pipe 2 is tightly attached to the stop block 11. The bottom of the steel connecting pipe 1 is arranged at the inner side of the top of the 90-degree plastic askew pipe 2 and is clamped and fixed through friction force.
The outer diameter of the stop block 11 is consistent with that of the 90-degree plastic crooked pipe 2; a steel sleeve 31 is sleeved on the outer side of the connecting part of the stop 11 and the 90-degree plastic crooked pipe 2. The length of the steel sleeve 31 is the sum of the length of the steel connecting pipe 1 inserted into the 90-degree plastic askew pipe 2 and the thickness of the stop block 11, and the inner diameter of the steel sleeve 31 is consistent with the outer diameters of the stop block 11 and the 90-degree plastic askew pipe 2. The outer side of the steel sleeve 31 is wrapped with an insulating layer 32; the top of the insulation layer 32 is on the steel adapter tube 1 and the bottom of the insulation layer 32 is on the 90 ° plastic crooked tube 2. The insulating layer 32 is a plastic film made of PE material. The insulating layer 32 is designed to increase the insulativity of the steel connecting pipe 1, so that the steel connecting pipe 1 close to the ground can be prevented from being punctured after being shocked in rainy season, and the safety of the pipeline is prevented from being affected; the integrity, tightness and tightness between the steel connecting pipe 1 and the 90-degree plastic crooked pipe 2 are further increased.
Claims (8)
1. A steel-plastic conversion joint based on a 90-degree plastic bent pipe comprises a steel connection pipe (1) which is arranged on the ground side and connected with a steel pipe; the method is characterized in that: the bottom of the steel connecting pipe (1) is fixedly connected with a 90-degree plastic crooked pipe (2) through a connecting part (3), the 90-degree plastic crooked pipe (2) is arranged in the ground and is connected with a plastic pipe, and the other end of the 90-degree plastic crooked pipe (2) extends out of the ground and is fixedly connected with the steel connecting pipe (1); the connecting part (3) comprises a thread (12) arranged on the outer wall of the bottom of the steel connecting pipe (1), and a stop block (11) is fixedly connected to the upper side of the thread (12); the bottom of the steel connecting pipe (1) is fixedly arranged in the 90-degree plastic skew pipe (2), and the top wall of the 90-degree plastic skew pipe (2) is tightly attached to the stop block (11).
2. The steel-plastic crossover joint based on 90 ° plastics return bend of claim 1, characterized by: the outer diameter of the steel connecting pipe (1) is consistent with the inner diameter of the top of the 90-degree plastic inclined pipe (2), and the bottom of the steel connecting pipe (1) is clamped on the inner side of the top of the 90-degree plastic inclined pipe (2).
3. The steel-plastic crossover joint based on 90 ° plastics return bend of claim 1, characterized by: the screw thread (12) arranged at the bottom of the steel connecting pipe (1) is a chamfer screw thread (12), the tip part of the chamfer screw thread (12) faces to the 90-degree plastic inclined pipe (2), and the direction of the inverted opening is a stop block (11).
4. The steel-plastic crossover joint based on 90 ° plastics return bend of claim 3, characterized by: a groove is formed between the stop block (11) and the chamfer threads (12), and a sealing ring (13) is sleeved in the groove.
5. The steel-plastic crossover joint based on 90 ° plastics return bend of claim 1, characterized by: the outer diameter of the stop block (11) is consistent with that of the 90-degree plastic crooked pipe (2); a steel sleeve (31) is sleeved on the outer side of the connecting part of the stop block (11) and the 90-degree plastic skew pipe (2).
6. The steel-plastic crossover joint based on 90 ° plastics return bend of claim 5, characterized by: the length of the steel sleeve (31) is the sum of the length of the bottom of the steel connecting pipe (1) inserted into the 90-degree plastic inclined pipe (2) and the thickness of the stop block (11), and the inner diameter of the steel sleeve (31) is consistent with the outer diameters of the stop block (11) and the 90-degree plastic inclined pipe (2).
7. The steel-plastic crossover joint based on 90 ° plastic elbow according to any one of claims 5 or 6, characterized in that: the outer side of the steel sleeve (31) is wrapped with an insulating layer (32); the top of the insulating layer (32) is arranged on the steel connecting pipe (1), and the bottom of the insulating layer (32) is arranged on the 90-degree plastic inclined pipe (2).
8. The steel-plastic crossover joint based on 90 ° plastics return bend of claim 7, characterized by: the insulating layer (32) is made of a plastic film made of PE materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920934272.7U CN210153386U (en) | 2019-06-20 | 2019-06-20 | Steel-plastic adapter based on 90-degree plastic bent pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920934272.7U CN210153386U (en) | 2019-06-20 | 2019-06-20 | Steel-plastic adapter based on 90-degree plastic bent pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210153386U true CN210153386U (en) | 2020-03-17 |
Family
ID=69763548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920934272.7U Active CN210153386U (en) | 2019-06-20 | 2019-06-20 | Steel-plastic adapter based on 90-degree plastic bent pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210153386U (en) |
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2019
- 2019-06-20 CN CN201920934272.7U patent/CN210153386U/en active Active
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