Leakage-proof seamless steel tube with splicing structure

Abstract

The utility model relates to the technical field of seamless steel tubes, in particular to a leakage-proof seamless steel tube with a splicing structure. The leakage-proof seamless steel pipe with the splicing structure comprises a splicing sleeve, a first seamless steel pipe and a second seamless steel pipe, the first seamless steel pipe is located on the left side of the second seamless steel pipe, a sealing sleeve is arranged on the inner side wall of the splicing sleeve, and a sealing ring is arranged on the inner side wall of the sealing sleeve. The sealing sleeve and the sealing ring are integrally formed, the sealing ring is located between the first seamless steel pipe and the second seamless steel pipe, and the sealing sleeve is connected to the outer side walls of the first seamless steel pipe and the second seamless steel pipe in a sleeving mode. The connecting gap between the first seamless steel pipe and the second seamless steel pipe is sealed through the sealing ring, the connecting gap between the first seamless steel pipe and the splicing sleeve and the connecting gap between the second seamless steel pipe and the splicing sleeve are sealed through the sealing sleeve, and therefore the leakproof performance of the two sets of seamless steel pipes spliced in the splicing sleeve can be effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipes, in particular to a leak-proof seamless steel pipe with a splicing structure. Background Art

[0002] A heat exchanger is a device that transfers heat from a hot fluid to a cold fluid to meet specified process requirements. Existing seamless steel pipes for heat exchangers require splicing two seamless steel pipes together during use. However, the tops of these pipes are usually smooth, so the two pipes need to be positioned and fixed before splicing. Aligning the axes of the two seamless steel pipes on the same straight line and then moving them for splicing and fixing makes installation cumbersome and requires precise positioning of the two seamless steel pipes, otherwise they will misalign and result in a poor seal. To address this issue, a technological innovation based on existing seamless steel pipes was developed. Utility Model Content

[0003] The purpose of the utility model is to provide a leak-proof seamless steel pipe with a splicing structure to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a leak-proof seamless steel pipe with a splicing structure, comprising:

[0005] A splicing sleeve, a first seamless steel pipe and a second seamless steel pipe, the first seamless steel pipe is located on the left side of the second seamless steel pipe, the inner side wall of the splicing sleeve is provided with a sealing sleeve, the inner side wall of the sealing sleeve is provided with a sealing ring, the sealing sleeve and the sealing ring are one-piece molded design, the sealing ring is located between the first seamless steel pipe and the second seamless steel pipe, the sealing sleeve is sleeved on the outer side walls of the first seamless steel pipe and the second seamless steel pipe, the outer side walls of the first seamless steel pipe and the second seamless steel pipe are evenly provided with locking holes, the outer side walls of the sealing sleeve are evenly provided with through holes, the outer side walls of the splicing sleeve are evenly penetrated with guide holes, the guide holes, through holes and locking holes correspond to each other, wherein: a fixing component is placed on the outer side wall of the splicing sleeve.

[0006] Preferably, the fixing assembly includes a flexible pull strip and a pull plate, a handle is provided on the front side of the flexible pull strip, the pull plate is evenly placed on the outer side wall of the flexible pull strip, a first threaded hole passes through the outer side wall of the pull plate, a bolt is screwed into the first threaded hole, two groups of pins are evenly provided on the side of the pull plate close to the flexible pull strip, and a spring is placed on the outer ring of the pin.

[0007] Preferably, an annular groove is provided on the outer side wall of the splicing sleeve, the flexible pull strip is arranged in the annular groove, and second threaded holes are evenly provided in the annular groove.

[0008] Preferably, the second threaded hole corresponds to the first threaded hole of the pull plate, and the second threaded hole corresponds to the bolt.

[0009] Preferably, the pull plates are evenly distributed in an annular array on the outer ring of the splicing sleeve, and the spring is arranged between the pull plates and the splicing sleeve.

[0010] Preferably, the latch is inserted into the guide hole of the splicing sleeve and corresponds to the through hole and the locking hole.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The utility model seals the connection gap between the first seamless steel pipe and the second seamless steel pipe by a sealing ring, and seals the connection gap between the first seamless steel pipe, the second seamless steel pipe and the splicing sleeve by a sealing sleeve, thereby effectively ensuring the leakage-proof performance of the first seamless steel pipe and the second seamless steel pipe after being spliced in the splicing sleeve;

[0013] Pull the handle forward to pull the flexible pull strip out of the annular groove of the splicing sleeve. At this time, the spring drives the pin to be inserted into the locking holes of the first seamless steel pipe and the second seamless steel pipe, so that the spliced first seamless steel pipe and the second seamless steel pipe can be quickly and preliminarily fixed in the splicing sleeve. Then turn the bolt and screw it into the second threaded hole of the splicing sleeve to complete the fixation of the pull plate, thereby ensuring the reliability of the pin fixing the first seamless steel pipe and the second seamless steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a leak-proof seamless steel pipe with a splicing structure according to the utility model;

[0015] Figure 2 This is a front cross-sectional view of a leak-proof seamless steel pipe with a splicing structure according to the present invention;

[0016] Figure 3 This is a right side sectional view of a leak-proof seamless steel pipe with a splicing structure according to the present invention.

[0017] In the figure: 1. splicing sleeve; 11. first seamless steel pipe; 12. second seamless steel pipe; 13. pull plate; 14. latch; 15. spring; 16. bolt; 17. flexible pull strip; 18. handle; 2. sealing sleeve; 21. sealing ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 3A leak-proof seamless steel pipe with a splicing structure includes a splicing sleeve 1, a first seamless steel pipe 11 and a second seamless steel pipe 12. The first seamless steel pipe 11 is located on the left side of the second seamless steel pipe 12. A sealing sleeve 2 is fixedly provided on the inner side wall of the splicing sleeve 1. A sealing ring 21 is fixedly provided on the inner side wall of the sealing sleeve 2. The sealing sleeve 2 and the sealing ring 21 are integrally formed. The sealing ring 21 is located between the first seamless steel pipe 11 and the second seamless steel pipe 12. The sealing sleeve 2 is sleeved on the outer side walls of the first seamless steel pipe 11 and the second seamless steel pipe 12. The connecting gap between the first seamless steel pipe 11 and the second seamless steel pipe 12 is sealed by the sealing ring 21. The first seamless steel pipe 11 and the second seamless steel pipe are sealed by the sealing sleeve 2. The connecting gap between 12 and the splicing sleeve 1 is sealed, so as to effectively ensure the leakage proofness of the first seamless steel pipe 11 and the second seamless steel pipe 12 after being spliced in the splicing sleeve 1, the outer walls of the first seamless steel pipe 11 and the second seamless steel pipe 12 are evenly provided with locking holes, the outer wall of the sealing sleeve 2 is evenly provided with through holes, and the outer wall of the splicing sleeve 1 is evenly penetrated with guide holes, and the guide holes, through holes and locking holes correspond to each other, wherein: a fixing component is placed on the outer wall of the splicing sleeve 1, and the fixing component includes a flexible pull strip 17 and a pull plate 13, and a handle 18 is fixed on the front side of the flexible pull strip 17, and the pull plate 13 is evenly placed on the outer wall of the flexible pull strip 17, and the outer wall of the pull plate 13 is penetrated with a first threaded hole, and the first threaded hole is penetrated with the second threaded hole. A bolt 16 is screwed in a threaded hole, and two groups of pins 14 are evenly fixed on one side of the pull plate 13 close to the flexible pull strip 17. A spring 15 is placed on the outer ring of the pin 14. An annular groove is provided on the outer wall of the splicing sleeve 1. The flexible pull strip 17 is slidably set in the annular groove. A second threaded hole is evenly provided in the annular groove. The second threaded hole corresponds to the first threaded hole of the pull plate 13, and the second threaded hole corresponds to the bolt 16. The pull plate 13 is evenly distributed on the outer ring of the splicing sleeve 1 in an annular array. The spring 15 is fixed between the pull plate 13 and the splicing sleeve 1. The pin 14 is inserted into the guide hole of the splicing sleeve 1, and corresponds to the through hole and the locking hole. The pull plate 13 can be limited by the flexible pull strip 17. After the first seamless steel pipe 11 and the second seamless steel pipe 12 are inserted into the splicing sleeve 1 for splicing, the handle 18 is pulled forward to pull the flexible pull strip 17 out of the annular groove of the splicing sleeve 1. At this time, the spring 15 uses its own resilience to drive the pin 14 through the guide hole and the through hole through the pull plate 13, and is inserted into the locking holes of the first seamless steel pipe 11 and the second seamless steel pipe 12. In this way, the spliced first seamless steel pipe 11 and the second seamless steel pipe 12 can be quickly and preliminarily fixed in the splicing sleeve 1, and then the bolt 16 is turned to screw it into the second threaded hole of the splicing sleeve 1, so as to complete the fixation of the pull plate 13, thereby ensuring that the pin 14 fixes the first seamless steel pipe 11 and the second seamless steel pipe 12 reliably.

[0020] Working principle: The pull plate 13 can be limited by the flexible pull rod 17. When the first seamless steel pipe 11 and the second seamless steel pipe 12 are inserted into the splicing sleeve 1 for splicing, the connection gap between the first seamless steel pipe 11 and the second seamless steel pipe 12 is sealed by the sealing ring 21, and the connection gap between the first seamless steel pipe 11 and the second seamless steel pipe 12 and the splicing sleeve 1 is sealed by the sealing sleeve 2, so as to effectively ensure the leakage resistance of the first seamless steel pipe 11 and the second seamless steel pipe 12 after splicing in the splicing sleeve 1. Pull the handle 18 forward to pull the flexible pull rod 1 7 is pulled out from the annular groove of the splicing sleeve 1. At this time, the spring 15 uses its own resilience to drive the pin 14 through the guide hole and the through hole through the pull plate 13, and is inserted into the locking holes of the first seamless steel pipe 11 and the second seamless steel pipe 12. In this way, the first seamless steel pipe 11 and the second seamless steel pipe 12 after splicing can be quickly and preliminarily fixed in the splicing sleeve 1. Then, the bolt 16 is rotated to screw it into the second threaded hole of the splicing sleeve 1. In this way, the fixing of the pull plate 13 can be completed, thereby ensuring the reliability of the pin 14 in fixing the first seamless steel pipe 11 and the second seamless steel pipe 12.

Claims

1. A leak-proof seamless steel pipe with a splicing structure, characterized in that: include: A splicing sleeve (1), a first seamless steel pipe (11) and a second seamless steel pipe (12), wherein the first seamless steel pipe (11) is located on the left side of the second seamless steel pipe (12), a sealing sleeve (2) is provided on the inner side wall of the splicing sleeve (1), a sealing ring (21) is provided on the inner side wall of the sealing sleeve (2), the sealing sleeve (2) and the sealing ring (21) are integrally formed, the sealing ring (21) is located between the first seamless steel pipe (11) and the second seamless steel pipe (12), the sealing sleeve (2) is sleeved on the outer side walls of the first seamless steel pipe (11) and the second seamless steel pipe (12), the outer side walls of the first seamless steel pipe (11) and the second seamless steel pipe (12) are uniformly provided with locking holes, the outer side walls of the sealing sleeve (2) are uniformly provided with through holes, the outer side walls of the splicing sleeve (1) are uniformly provided with guide holes, the guide holes, the through holes and the locking holes correspond to each other, wherein: a fixing component is placed on the outer side wall of the splicing sleeve (1).

2. The leak-proof seamless steel pipe with a splicing structure according to claim 1, characterized in that: The fixing assembly includes a flexible pull strip (17) and a pull plate (13), a handle (18) is provided on the front side of the flexible pull strip (17), the pull plate (13) is evenly placed on the outer wall of the flexible pull strip (17), a first threaded hole is passed through the outer wall of the pull plate (13), a bolt (16) is screwed into the first threaded hole, two groups of pins (14) are evenly provided on the side of the pull plate (13) close to the flexible pull strip (17), and a spring (15) is placed on the outer ring of the pin (14).

3. The leak-proof seamless steel pipe with a splicing structure according to claim 2, characterized in that: An annular groove is provided on the outer side wall of the splicing sleeve (1), the flexible pull strip (17) is arranged in the annular groove, and second threaded holes are evenly provided in the annular groove.

4. The leak-proof seamless steel pipe with a splicing structure according to claim 3, characterized in that: The second threaded hole corresponds to the first threaded hole of the pull plate (13), and the second threaded hole corresponds to the bolt (16).

5. The leak-proof seamless steel pipe with a splicing structure according to claim 4, characterized in that: The pull plates (13) are evenly distributed in an annular array on the outer ring of the splicing sleeve (1), and the spring (15) is arranged between the pull plates (13) and the splicing sleeve (1).

6. The leak-proof seamless steel pipe with a splicing structure according to claim 5, characterized in that: The latch (14) is inserted into the guide hole of the splicing sleeve (1) and corresponds to the through hole and the locking hole.

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