Integrated full-anti-corrosion steel-plastic conversion joint for fuel gas introduction pipe
By arranging the alignment boss and internal thread groove in the main body of the steel-plastic conversion joint of the gas inlet pipe, and arranging the shell and the pressing edge on the outside, the problem that the existing joint is difficult to disassemble and replace is solved, and convenient replacement and replacement are realized. Tightly connected, and improved protection and anti-corrosion performance through the shell and lining plate.
Patent Information
- Application Number
- CN202421265776.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The existing steel-plastic converter joints of gas introduction pipes are difficult to disassemble and replace, and are susceptible to damage by environmental factors, resulting in the joint itself being easily damaged.
An integrated fully anti-corrosion steel-to-plastic conversion joint for the gas inlet pipe is designed. By setting the alignment boss and the internal thread groove in the main body, and setting the shell and the pressing edge on the outside, the tight connection of the plastic pipe fittings and the steel pipe fittings is realized. and easy replacement, while improving the protection and anti-corrosion performance of the joint through the shell and lining plate.
It realizes the convenient replacement and tight connection of plastic pipe fittings and steel pipe fittings, improves the protection and anti-corrosion performance of the joints, and extends the service life.
Smart Images
Figure CN222377466U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of steel-plastic conversion joints, in particular to an integrated full-corrosion-resistant steel-plastic conversion joint for a gas inlet pipe. Background Art
[0002] At present, in the field of gas and other fluid transportation, metal pipes such as steel pipes and polyethylene plastic pipes are usually used. Metal pipes are often used for medium and high pressure fluid transportation, while plastic pipes are generally used for low pressure fluid transportation. In addition, for safety reasons, relevant national engineering specifications stipulate that plastic pipes are not allowed to directly enter the end of the pipe - the user's indoor space. Therefore, when the high-pressure pipe transitions to the low-pressure pipe, and when the plastic pipe enters the home from the courtyard pipe network, it is usually necessary to use a steel-plastic conversion joint for connection.
[0003] In the existing gas inlet pipe steel-plastic conversion joint, the steel pipe and the PE pipe are usually directly connected by hot melting or welding. Once formed, it is difficult to disassemble. If one of the steel pipe or PE pipe in the steel-plastic conversion joint is damaged, the entire steel-plastic conversion joint will be unusable, and a straight pipe or a bent pipe may be used. The welded steel-plastic conversion joint is not easy to disassemble and replace to adjust the direction. At the same time, the conversion joint is fixed on the outside of the connection between the steel pipe and the PE pipe, and is mostly exposed to the outdoors and is often subjected to rain erosion and collision with debris. It is not convenient to protect the joint body, making the joint body susceptible to damage. Utility Model Content
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0005] A gas inlet pipe integrated fully corrosion-resistant steel-plastic conversion joint comprises a conversion joint, a plastic pipe fitting and a steel pipe fitting, the outer sides of the plastic pipe fitting and the steel pipe fitting are both provided with positioning bosses, the left and right sides of the conversion joint are both movably clamped with sealing ring 1 and sealing ring 2, and the outside of the conversion joint is fixedly installed with an external fastening shell; the conversion joint comprises a main body and an alignment boss arranged in the main body, the inner side of the main body is provided with internal thread grooves based on the left and right sides of the alignment bosses, the outsides of the plastic pipe fitting and the steel pipe fitting are both provided with threaded connection parts adapted to the internal thread grooves, and the plastic pipe fitting and the steel pipe fitting are threadedly installed in the inside of the main body; the external fastening shell comprises a shell body 1 and a shell body 2, the left and right sides of the shell body 1 and the shell body 2 are both provided with clamping edges, and the clamping edges respectively abut against the outer sides of the positioning bosses on the outside of the plastic pipe fitting and the steel pipe fitting.
[0006] A further improvement of the technical solution of the utility model is that: the alignment boss is arranged in the middle of the main body, a first fixing groove is opened on the left and right sides of the alignment boss, and a second fixing groove is opened on the left and right sides of the main body.
[0007] A further improvement of the technical solution of the utility model is that the first sealing ring is movably clamped in the interior of the first clamping groove, and the second sealing ring is clamped between the second clamping groove and the positioning boss.
[0008] A further improvement of the technical solution of the utility model is that: connecting holes are opened inside the shell one and the shell two, a nut corresponding to the position of the connecting hole is welded on the outer side of the shell two, and a fastening bolt penetrating the connecting hole and threadedly connected to the nut is movably installed on the outer side of the shell one.
[0009] A further improvement of the technical solution of the utility model is that: the inner sides of the shell one and the shell two are both provided with empty grooves, and the inner sides of the empty grooves are movably clamped with inner lining plates.
[0010] A further improvement of the technical solution of the utility model is that the exteriors of the shell one, the shell two and the steel pipe fittings are all sprayed with an anti-corrosion coating.
[0011] A further improvement of the technical solution of the utility model is that the inner side of the clamping edge is arranged in a stepped shape that is compatible with the main body and the positioning boss.
[0012] A further improvement of the technical solution of the utility model is that rounded corners are arranged on the inner side of the pressing edge and the outer side of the positioning boss.
[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:
[0014] 1. The utility model provides an integrated fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe, which is spaced by arranging a positioning boss inside the main body and arranging an internal thread groove inside the main body to cooperate with the threaded connection parts arranged on the outside of the plastic pipe fitting and the steel pipe fitting corresponding to the internal thread groove to be connected to the main body, and is covered by arranging shells one and two on the outside of the main body, and the positioning bosses on the outside of the plastic pipe fitting and the steel pipe fitting are abutted and fixed from the outside by pressing the edges, thereby ensuring the tightness of the connection between the plastic pipe fitting and the steel pipe fitting, and facilitating the replacement of the damaged plastic pipe fitting or steel pipe fitting of the conversion joint.
[0015] 2. The utility model provides an integrated fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe, wherein shell one and shell two are located outside the main body, and inner lining plates are arranged in empty grooves provided on the inner sides of shell one and shell two to provide protection for the conversion joint while improving its corrosion resistance. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a structural schematic diagram of the integrated fully anti-corrosion steel-plastic conversion joint for the gas inlet pipe of the utility model;
[0017] Figure 2 It is a schematic diagram of the installation position of the outer fastening shell of the utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the conversion joint of the utility model;
[0019] Figure 4 It is a structural schematic diagram of the outer fastening shell of the utility model;
[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model.
[0021] In the figure: 1. conversion joint; 11. main body; 12. alignment boss; 13. fixing groove 1; 14. fixing groove 2; 15. internal thread groove; 2. plastic pipe fitting; 3. steel pipe fitting; 4. positioning boss; 5. sealing ring 1; 6. sealing ring 2; 7. outer fastening shell; 71. shell 1; 72. shell 2; 73. clamping edge; 74. connecting hole; 75. nut; 76. fastening bolt; 77. empty slot; 78. inner lining plate. DETAILED DESCRIPTION
[0022] The utility model is further described in detail below:
[0023] like Figures 1 to 5 As shown, the utility model provides an integrated fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe, comprising a conversion joint 1, a plastic pipe fitting 2 and a steel pipe fitting 3, the outer sides of the plastic pipe fitting 2 and the steel pipe fitting 3 are both provided with positioning bosses 4, the left and right sides of the conversion joint 1 are both movably clamped with a sealing ring 1 5 and a sealing ring 2 6, and the outside of the conversion joint 1 is fixedly installed with an outer fastening shell 7; the conversion joint 1 comprises a main body 11 and an alignment boss 12 arranged in the main body 11, the inner side of the main body 11 is provided with internal thread grooves 15 based on the left and right sides of the alignment boss 12, the outer sides of the plastic pipe fitting 2 and the steel pipe fitting 3 are both provided with threaded connection parts adapted to the internal thread grooves 15, and the plastic pipe fitting 2 and the steel pipe fitting 3 are threadedly installed in the interior of the main body 11; the outer fastening shell 7 comprises a shell 1 71 and a shell 2 72, the left and right sides of the shell 1 71 and the shell 2 72 are both provided with clamping edges 73, and the clamping edges 73 respectively abut against the outer sides of the positioning bosses 4 on the outside of the plastic pipe fitting 2 and the steel pipe fitting 3.
[0024] The main body 11 is provided with an alignment boss 12 for spacing and an internal thread groove 15 is provided inside the main body 11 to cooperate with the threaded connection part provided on the outside of the plastic pipe fitting 2 and the steel pipe fitting 3 to correspond to the internal thread groove 15 and connected to the main body 11, and the shell 1 71 and the shell 2 72 are provided on the outside of the main body 11 for covering, and the positioning boss 4 on the outside of the plastic pipe fitting 2 and the steel pipe fitting 3 is abutted and fixed from the outside by the clamping edge 73 to ensure the tightness of the connection between the plastic pipe fitting 2 and the steel pipe fitting 3, so as to facilitate the replacement of the damaged plastic pipe fitting 2 or steel pipe fitting 3 of the conversion joint 1, and at the same time, the shell 1 71 and the shell 2 72 are located outside the main body 11, and cooperate with the inner lining plate 78 provided in the empty groove 77 opened on the inner side of the shell 1 71 and the shell 2 72 to provide protection for the conversion joint 1 and improve its anti-corrosion performance.
[0025] like Figure 3 and Figure 5 As shown, the alignment boss 12 is located in the middle of the main body 11 , and a first clamping groove 13 is opened on the left and right sides of the alignment boss 12 , and a second clamping groove 14 is opened on the left and right sides of the main body 11 .
[0026] The sealing ring 1 5 is movably engaged with the interior of the fixing groove 1 13 , and the sealing ring 2 6 is engaged between the fixing groove 2 14 and the positioning boss 4 .
[0027] By matching the fixing groove 13 set on the side of the positioning boss 12 with the fixing groove 14 set on the side of the main body 11, the sealing ring 15 and the sealing ring 26 are respectively set in the fixing groove 13 and the fixing groove 2 14, so that the main body 11 is connected with the plastic pipe fitting 2 and the steel pipe fitting 3, and then the sealing ring 15 and the sealing ring 2 6 are tightly pressed to ensure the sealing effect.
[0028] like Figure 4 As shown, a connecting hole 74 is provided inside the shell 1 71 and the shell 2 72, a nut 75 corresponding to the position of the connecting hole 74 is welded on the outer side of the shell 2 72, and a fastening bolt 76 penetrating the connecting hole 74 and threadedly connected to the nut 75 is movably installed on the outer side of the shell 1 71.
[0029] The shell 1 71 and the shell 2 72 are fixed to the outside of the main body 11 to protect them and stabilize the plastic pipe 2 and the steel pipe 3 by arranging nuts 75 and fastening bolts 76 corresponding to the connecting holes 74 on the outside of the shell 1 71 and the shell 2 72 respectively.
[0030] like Figure 4 As shown, the inner sides of the shell 1 71 and the shell 2 72 are both provided with a slot 77 , and an inner lining plate 78 is movably engaged inside the slot 77 .
[0031] The inner lining plate 78 arranged in the empty groove 77 is located between the main body 11 and the shell 1 71 and the shell 2 72 to ensure the protective effect.
[0032] like Figure 3 and Figure 4 As shown, the exteriors of the shell 1 71 , the shell 2 72 and the steel pipe 3 are all sprayed with an anti-corrosion coating.
[0033] The outer surfaces of the shell 1 71, the shell 2 72 and the steel pipe 3 are all sprayed with epoxy resin anti-corrosion paint to improve the anti-corrosion effect.
[0034] like Figure 4 and Figure 5 As shown, the inner side of the pressing edge 73 is arranged in a stepped shape to match the main body 11 and the positioning boss 4 .
[0035] The inner side of the pressing edge 73 and the outer side of the positioning boss 4 are provided with rounded corners.
[0036] The inner side of the clamping edge 73 is arranged in a stepped shape to ensure a close fit between the main body 11 and the positioning boss 4. At the same time, rounded corners are arranged on the inner side of the clamping edge 73 and the outer side of the positioning boss 4 to facilitate docking.
[0037] The following is a detailed description of the working principle of the integrated fully corrosion-resistant steel-plastic conversion joint for the gas inlet pipe.
[0038] like Figures 1 to 5 As shown, the plastic pipe fitting 2 and the steel pipe fitting 3 are connected to the main body 11 by connecting the plastic pipe fitting 2 and the steel pipe fitting 3 from both sides of the main body 11 respectively, and the plastic pipe fitting 2 and the steel pipe fitting 3 are connected to the main body 11 by connecting the internal thread groove 15 with the external thread connection section of the plastic pipe fitting 2 and the steel pipe fitting 3. The inner sides of the plastic pipe fitting 2 and the steel pipe fitting 3 are abutted against the outer side of the alignment boss 12 to squeeze the sealing ring 1 in the clamping groove 13 to provide sealing. At the same time, the positioning boss 4 on the outer side of the plastic pipe fitting 2 and the steel pipe fitting 3 is abutted against the outer side of the clamping groove 2 14 to squeeze the sealing ring 2 6 in the clamping groove 2 14 to provide secondary sealing. The shell 1 71 and the shell 2 72 are clamped from the outer side of the main body 11, and by using the fastening bolts 76 The shell 1 71 and the shell 2 72 are connected by passing through the connection hole 74 on the shell 1 71 and threading into the nut 75 on the outside of the connection hole 74 on the shell 2 72. The compression edge 73 arranged on the side of the shell 1 71 and the shell 2 72 presses against the positioning boss 4 on the outside of the positioning boss 4 when the shell 1 71 and the shell 2 72 are installed and fixed on the outside of the main body 11 to ensure the tight connection between the plastic pipe fitting 2 and the steel pipe fitting 3. The inner lining plate 78 arranged in the empty groove 77 inside the shell 1 71 and the shell 2 72 is located on the outside of the main body 11 to cooperate with the shell 1 71 and the shell 2 72 to provide protection for the main body 11 and at the same time improve the corrosion resistance of the conversion joint 1.
[0039] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. An integrated, fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe, comprising a conversion joint (1), a plastic pipe fitting (2) and a steel pipe fitting (3), characterized in that: The outer sides of the plastic pipe fitting (2) and the steel pipe fitting (3) are both provided with positioning bosses (4); the left and right sides of the conversion joint (1) are both movably clamped with a sealing ring 1 (5) and a sealing ring 2 (6); the outside of the conversion joint (1) is fixedly installed with an outer fastening shell (7); the conversion joint (1) comprises a main body (11) and a positioning boss (12) arranged in the main body (11); the inner side of the main body (11) is provided with internal thread grooves (15) based on the left and right sides of the positioning boss (12); the plastic pipe fitting (2) and the steel pipe fitting (3) are both provided with internal thread grooves (15); the left and right sides of the plastic pipe fitting (2) and the steel pipe fitting (3) are both provided with internal thread grooves (15); the right and left ... The outside of the plastic pipe fitting (2) and the steel pipe fitting (3) are both provided with a threaded connection portion adapted to the internal thread groove (15), and the plastic pipe fitting (2) and the steel pipe fitting (3) are threadedly installed inside the main body (11); the outer fastening shell (7) comprises a shell 1 (71) and a shell 2 (72), and the left and right sides of the shell 1 (71) and the shell 2 (72) are both provided with a clamping edge (73), and the clamping edge (73) is respectively abutted against the outer side of the positioning boss (4) outside the plastic pipe fitting (2) and the steel pipe fitting (3).
2. The integrated fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe according to claim 1 is characterized by: The alignment boss (12) is arranged in the middle of the main body (11), and a first locking groove (13) is provided on the left and right sides of the alignment boss (12), and a second locking groove (14) is provided on the left and right sides of the main body (11).
3. The integrated fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe according to claim 2 is characterized by: The sealing ring 1 (5) is movably engaged with the interior of the fixing groove 1 (13), and the sealing ring 2 (6) is engaged between the fixing groove 2 (14) and the positioning boss (4).
4. The integrated fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe according to claim 1 is characterized by: The shells 1 (71) and 2 (72) are both provided with connection holes (74), the outer side of the shell 2 (72) is welded with a nut (75) corresponding to the position of the connection hole (74), and the outer side of the shell 1 (71) is movably provided with a fastening bolt (76) penetrating the connection hole (74) and threadedly connected to the nut (75).
5. The integrated fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe according to claim 4 is characterized by: The inner sides of the shell 1 (71) and the shell 2 (72) are both provided with a hollow groove (77), and an inner lining plate (78) is movably engaged inside the hollow groove (77).
6. The integrated fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe according to claim 5 is characterized by: The exteriors of the shell 1 (71), the shell 2 (72) and the steel pipe (3) are all sprayed with an anti-corrosion coating.
7. The integrated fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe according to claim 1 is characterized by: The inner side of the pressing edge (73) is arranged in a stepped shape that matches the main body (11) and the positioning boss (4).
8. The integrated fully corrosion-resistant steel-plastic conversion joint for a gas inlet pipe according to claim 7 is characterized in that: The inner side of the pressing edge (73) and the outer side of the positioning boss (4) are provided with rounded corners.