Pipe connecting structure for terrestrial heat
By using serrated, slots and sealing rings in geothermal pipe connection structures, the problem of easy loosening and deformation of threaded connections in the prior art is solved, and a more reliable and safe pipe connection is achieved, suitable for deep layers of high temperature and high pressure Geothermal extraction environment.
Patent Information
- Application Number
- CN202420058632.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The existing geothermal pipe connection structure has safety hazards during the installation process. The threaded connection is easy to loosen and is prone to deformation and leak after a long time of use, which cannot meet the needs of deep geothermal extraction of high temperature and high pressure.
Adopt a pipe connection structure including connecting bushings, sealing rings and limiting sleeves. Through the combination of serrated structures, slots and clamps, annular raised structures and sealing rings, reliable connection of pipes and anti-rotating and anti-loosening Effect.
It improves the strength and sealing of the connection, avoids the looseness and deformation of traditional threaded connections, and ensures the safety and reliability of pipe connections.
Smart Images
Figure CN222316222U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of plastic solid wall pipe connection, and in particular relates to a geothermal pipe connection structure. Background Art
[0002] At present, in the deep geothermal field, it is necessary to extract hot water from a well one or two kilometers underground and then perform heat exchange. Since the pipeline is laid vertically and the temperature of the transported medium is as high as 90°C, PERT pipes are not applicable and special material pipes are required for transportation. However, since special material pipes cannot be welded, the common practice is to connect them through threads. However, the current threaded connection structure has great safety hazards: the upper and lower pipes are threaded together. When the third pipe is installed, the threaded connection between the first and second pipes is prone to loosening during the thread tightening process. In addition, the simple internal and external thread connection is prone to deformation and leakage after a long period of use.
[0003] To this end, a geothermal pipe connection structure was designed, which not only has a more reliable connection strength than traditional threaded connections, but also has an anti-rotation effect, eliminating the safety hazards of previous installation methods. Utility Model Content
[0004] In view of the above-mentioned problems, the utility model provides a geothermal pipe connection structure, which is not only high in strength, but also avoids the technical problems of traditional threaded connections such as easy loosening and falling off and easy deformation.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A geothermal pipe connection structure includes a connecting sleeve, a sealing ring and a limiting clamping sleeve that cooperate with each other. The connecting sleeve is a circular tubular structure. The two end surfaces of the connecting sleeve are provided with serrated structures in opposite directions. Two annular protrusion structures are provided in the middle of the outer surface of the connecting sleeve. A groove structure is formed between the two annular protrusion structures. A clamping groove is provided in the middle of the groove structure. External threads are provided on both sides of the outer surface of the connecting sleeve for threaded connection with the pipe to be connected; the limiting clamping sleeve is composed of two semi-rotating bodies. Ribs are provided on the outer surface of the semi-rotating body, and a clamping ring structure is provided in the center of the inner surface of the semi-rotating body. The clamping ring structure is arranged in the groove structure of the connecting sleeve, and a clamping block that cooperates with the clamping groove is provided on the clamping ring structure. The sealing ring is annular and is arranged at the contact end surface of the pipe to be connected and the connecting sleeve.
[0007] As a further technical solution of the utility model, the groove structure of the connecting bushing is an inclined structure that is narrow at the top and wide at the bottom.
[0008] As a further technical solution of the utility model, the clamping ring structure of the limit clamping sleeve includes two annular clamping parts, and the relative inner surfaces of the two clamping parts are inclined.
[0009] As a further technical solution of the utility model, the inner diameter of the limiting sleeve matches the outer diameter of the pipe to be connected.
[0010] As a further technical solution of the utility model, the end of the pipe to be connected is provided with an internal thread, which is matched and connected with the external thread of the connecting bushing.
[0011] The utility model geothermal pipe connection structure has the following beneficial effects:
[0012] By providing serrated structures in opposite directions at both ends of the connecting bushing, the serrated structures will be embedded in the inner end surface of the pipe during connection, thus achieving the effect of preventing rotation and loosening;
[0013] By arranging the card slot of the connecting bushing and the card block of the limiting card sleeve to cooperate with each other, they can prevent mutual rotation during assembly and play a limiting role;
[0014] By arranging a sealing ring at the contact surface between the end of the pipe and the connecting bushing, the sealing ring is squeezed during the assembly process to play a sealing role.
[0015] In summary, compared with the existing connection methods, the geothermal pipe connection structure of the utility model has the advantages of anti-rotation and anti-loosening, good sealing effect, reliable connection, etc., and has great application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the application of the geothermal pipe connection structure of the utility model;
[0017] Figure 2 for Figure 1 A vertical cross-section of
[0018] Figure 3 This is a schematic diagram of the connecting bushing structure of the utility model;
[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the connecting bushing of the utility model;
[0020] Figure 5 This is a schematic diagram of the structure of the limit sleeve (semi-rotating body) of the utility model;
[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the limit sleeve (semi-rotating body) of the utility model;
[0022] In the figure: 1. connecting bushing; 11. serrated structure; 12. annular protrusion structure; 13. groove structure; 14. clamping groove; 15. external thread; 2. sealing ring; 3. limiting clamping sleeve; 31. rib; 32. clamping ring structure; 321. clamping part; 33. clamping block; 4. pipe to be connected. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.
[0024] like Figure 1-Figure 6 As shown, a geothermal pipe connection structure of the utility model is mainly composed of a connection bushing 1, a sealing ring 2 and a limiting sleeve 3.
[0025] The two ends of the connecting bushing 1 are provided with serrated structures 11 in opposite directions, and the outer surface is provided with external threads 15 for locking connection with the end face of the pipe 4 to be connected. After the thread is screwed to the bottom, the serrated structure 11 on the end face of the connecting bushing 1 will be embedded in the inner end face of the pipe 4 to be connected, achieving the effect of anti-rotation and anti-loosening. Compared with the previous internal and external thread connection of the pipe, it has the function of anti-rotation and anti-loosening. In addition, the middle part of the connecting bushing 1 is provided with a groove structure 13 composed of two annular protrusion structures 12, which is used to place the limiting sleeve 3. The groove structure 13 is an inclined structure setting that is narrow at the top and wide at the bottom, and a card slot 14 is provided in the middle of the groove structure 13, which cooperates with the card block 33 of the limiting sleeve 3. During assembly, it prevents mutual rotation and plays a limiting role;
[0026] The sealing ring 2 is annular and is placed on the contact surface between the end of the pipe 4 to be connected and the connecting bushing 1. During the process of tightening the internal thread of the pipe 4 to be connected and the external thread 15 of the connecting bushing 1, the sealing ring 2 is squeezed to play a sealing role.
[0027] The position-limiting clamping sleeve 3 is composed of two semi-rotating bodies, which are required for assembly and buckled and installed. A rib 31 is provided on the outer surface of the semi-rotating body, and a clamping ring structure 32 is provided at the center of the inner surface of the semi-rotating body. The clamping ring structure 32 includes two annular clamping parts 321, and the relative inner surfaces of the two clamping parts 321 are inclined. In this way, when clamping and assembling, the rib 31 is subjected to concentrated force, which is more conducive to the clamping ring structure 32 being subjected to force to expand to both sides and embedded in the groove structure 13 of the connecting bushing 1. A clamping block 33 is provided on the clamping ring structure 32 to cooperate with the clamping groove 14 of the connecting bushing 1. The clamping block 33 needs to be aligned with the clamping groove 14 during installation. Finally, the clamping can be completed with a tool.
[0028] Compared with the existing connection methods, the connection structure adopted by the utility model has the advantages of anti-rotation and anti-loosening effect, good sealing effect, reliable connection, etc. The geothermal pipe connection structure of the utility model has great application prospects.
[0029] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A geothermal pipe connection structure, characterized in that: The invention comprises a connecting bushing (1), a sealing ring (2) and a limit clamping sleeve (3) which cooperate with each other. The connecting bushing (1) is a circular tubular structure. The two end surfaces of the connecting bushing (1) are provided with sawtooth structures (11) in opposite directions. Two annular protrusion structures (12) are provided in the middle of the outer surface of the connecting bushing (1). A groove structure (13) is formed between the two annular protrusion structures (12). A clamping groove (14) is provided in the middle of the groove structure (13). External threads (15) are provided on both sides of the outer surface of the connecting bushing (1). Used for threaded connection with the pipe (4) to be connected; the limiting clamping sleeve (3) is composed of two semi-rotating bodies, the outer surface of the semi-rotating body is provided with ribs (31), the center of the inner surface of the semi-rotating body is provided with a clamping ring structure (32), the clamping ring structure (32) is arranged in the groove structure (13) of the connecting bushing (1), and a clamping block (33) matching with the clamping groove (14) is arranged on the clamping ring structure (32), and the sealing ring (2) is annular and is arranged at the contact end surface between the pipe (4) to be connected and the connecting bushing (1).
2. A geothermal pipe connection structure according to claim 1, characterized in that: The groove structure (13) of the connecting bushing (1) is an inclined structure that is narrow at the top and wide at the bottom.
3. A geothermal pipe connection structure according to claim 1, characterized in that: The clamping ring structure (32) of the position-limiting clamping sleeve (3) comprises two annularly arranged clamping portions (321), and the relative inner surfaces of the two clamping portions (321) are inclined.
4. A geothermal pipe connection structure according to claim 1, characterized in that: The inner diameter of the limiting sleeve (3) matches the outer diameter of the pipe (4) to be connected.
5. The geothermal pipe connection structure according to claim 1, characterized in that: The end of the pipe (4) to be connected is provided with an internal thread, which cooperates with the external thread (15) of the connecting bushing (1) for connection.