Leak-proof metal composite pipe

Abstract

The utility model discloses a leakproof metal composite pipe which mainly comprises a first composite pipe body, a second composite pipe body and a leakproof connecting assembly, a first fixing ring is fixedly connected to the outer side of the first composite pipe body in a sleeved mode, and first positioning columns are fixedly connected to the outer side of the first fixing ring in an annular array mode. The outer side of the second composite pipe body is fixedly sleeved with a second fixing ring, second positioning columns are fixedly connected to the outer side of the second fixing ring in an annular array mode, and the opposite ends of the first composite pipe body and the second composite pipe body are connected with the left end and the right end of an anti-leakage connecting assembly in a matched and inserted mode correspondingly. The leakage-proof connecting assembly comprises a middle pipe, a pair of third fixing rings fixedly connected with the outer sides of the two ends of the middle pipe respectively and a fixing mechanism used for fixedly connecting the first fixing ring, the second fixing ring and the third fixing rings together, and the fixing mechanism is connected with the first positioning column and the second positioning column. The sealing device is good in sealing performance and convenient to disassemble and assemble, and the aged first sealing ring and the aged second sealing ring can be conveniently replaced in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pipes, in particular to a leakage-proof metal composite pipe. Background Art

[0002] In industrial fields such as petroleum, chemical industry, natural gas transportation and water treatment, metal composite pipes are widely used due to their good mechanical strength, corrosion resistance and long service life.

[0003] However, despite the excellent overall performance of metal composite pipes, in actual applications, traditional metal composite pipe connection methods are mostly flange connection and bolt fastening. Although the structure is relatively simple, other tools are required during the disassembly and assembly process, which makes the operation cumbersome, the disassembly and assembly efficiency is low, and it is inconvenient to replace aging sealing materials such as sealing gaskets at a later time. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a leak-proof metal composite pipe, mainly comprising a first composite pipe body, a second composite pipe body and a leak-proof connecting assembly, a first fixing ring is fixedly sleeved on the outer side of the first composite pipe body, a first positioning column is fixedly connected to the outer side of the first fixing ring in an annular array, a second fixing ring is fixedly sleeved on the outer side of the second composite pipe body, a second positioning column is fixedly connected to the outer side of the second fixing ring in an annular array, the opposite ends of the first composite pipe body and the second composite pipe body are respectively adapted to be plugged into the left and right ends of the leak-proof connecting assembly, the leak-proof connecting assembly comprises an intermediate pipe, a pair of third fixing rings respectively fixedly connected to the outer sides of the two ends of the intermediate pipe, and a fixing mechanism for fixing the first fixing ring, the second fixing ring and the third fixing ring together, the fixing mechanism is connected to the first positioning column and the second positioning column.

[0006] As a preferred solution of the leakage-proof metal composite pipe described in the utility model, a fourth fixing ring is fixedly connected to the inner wall of the middle part of the intermediate pipe, and first sealing rings are provided on both sides of the left and right sides of the fourth fixing ring. The opposite ends of the first composite pipe body and the second composite pipe body are respectively movably abutted against a pair of first sealing rings.

[0007] As a preferred solution of the leakage-proof metal composite pipe described in the utility model, grooves are provided at both ends of the intermediate pipe, a second sealing ring is provided on the inner bottom wall of the groove, the outer sides of the first composite pipe body and the second composite pipe body are fixedly connected with a first convex ring and a second convex ring respectively, the first convex ring and the second convex ring are respectively adapted to be plugged into a pair of grooves, and the opposite sides of the first convex ring and the second convex ring are respectively movably abutted against a pair of second sealing rings.

[0008] As a preferred solution of the leak-proof metal composite pipe described in the utility model, the fixing mechanism includes a snap-fit sleeve, a positioning hole is provided on the inner top wall of the snap-fit sleeve, a plug rod is passed through the middle of the snap-fit sleeve for horizontal sliding, a positioning piece is fixedly connected to the side of the snap-fit sleeve away from the intermediate tube, the two ends of the positioning piece are respectively adapted to be plugged into the two ends of the plug rod, and the snap-fit sleeve is nested on the outside of the first fixing ring and the third fixing ring, and the second fixing ring and the third fixing ring.

[0009] As a preferred solution for the leakage-proof metal composite pipe described in the utility model, the positioning part includes a sliding rod fixedly connected to the side of the locking sleeve away from the middle tube, a lifting plate slidably connected to the sliding rod, a positioning rod fixedly connected to both ends of the lifting plate, and a spring fixedly connected between the lifting plate and the locking sleeve. The spring movable sleeve is arranged on the outside of the sliding rod, and a pair of the positioning rods are respectively located on the left and right sides of the locking sleeve, and both are adapted to be plugged into the reserved holes on the insertion rod.

[0010] As a preferred solution of the leak-proof metal composite pipe of the present invention, the first fixing ring, the second fixing ring and the third fixing ring are all provided with through grooves corresponding to the insertion rod, and the insertion rod slides through the through grooves.

[0011] Beneficial effects of the utility model:

[0012] 1. The utility model improves the sealing between the first composite tube body and the second composite tube body by fitting and plugging the opposite ends of the first composite tube body and the second composite tube body with the intermediate tube and then movably abutting against the first sealing ring, making leakage less likely to occur. In addition, the abutment between the first convex ring, the second convex ring and the second sealing ring can further improve the sealing between the first composite tube body and the second composite tube body. Finally, the first composite tube body, the second composite tube body and the intermediate tube are fixedly connected together by a fixing mechanism, etc., which can ensure the sealing between the first composite tube body and the second composite tube body.

[0013] 2. In the present invention, the first positioning post, the second positioning post, the first positioning hole, the second positioning hole, etc. are used in coordination, so the snap-fit sleeve can be quickly positioned and installed, thereby improving installation efficiency.

[0014] 3. In the utility model, the lifting plate, positioning rod, spring, sliding rod, insertion rod, etc. are used in conjunction to quickly fix the snap sleeve, and no other tools are required during the fixing process. The operation is simple, the fixing efficiency is high, and it is convenient to replace the sealing material later. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model.

[0018] Figure 3 This is a schematic structural diagram of the first composite tube body of the present invention.

[0019] Figure 4 This is a schematic structural diagram of the second composite tube body of the present invention.

[0020] Figure 5 It is a schematic cross-sectional structural diagram of the third fixing ring of the present utility model.

[0021] Figure 6 It is a structural schematic diagram of the fixing mechanism of the present utility model.

[0022] Figure 7 It is a structural schematic diagram of the locking sleeve of the present utility model.

[0023] In the figure: 100, first composite tube body; 101, first fixing ring; 102, first positioning column; 103, first convex ring; 200, second composite tube body; 201, second fixing ring; 202, second positioning column; 203, second convex ring; 300, leak-proof connection assembly; 301, intermediate tube; 302, third fixing ring; 303, fixing mechanism; 303-1, snap-fit sleeve; 303-2, positioning hole; 303-3, spring; 303-4, insertion rod; 303-5, sliding rod; 303-6, lifting plate; 303-7, positioning rod; 304, fourth fixing ring; 305, first sealing ring; 306, groove; 307, second sealing ring. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0028] Example 1

[0029] Reference Figure 1-7 , which is the first embodiment of the present utility model, provides a leak-proof metal composite pipe, mainly comprising:

[0030] The first composite tube 100, such as Figure 3 A first fixing ring 101 is fixedly sleeved on the outside of the first composite tube body 100, and four first positioning columns 102 are fixedly connected to the outside of the first fixing ring 101 in an annular array. A first convex ring 103 is fixedly connected to the outer side of the first composite tube body 100;

[0031] The second composite tube 200, such as Figure 4 A second fixing ring 201 is fixedly sleeved on the outer side of the second composite tube body 200, four second positioning columns 202 are fixedly connected to the outer side of the second fixing ring 201 in an annular array, and a second convex ring 203 is fixedly connected to the outer side of the second composite tube body 200;

[0032] Leak-proof connection assembly 300, such as Figure 1 The opposite ends of the first composite pipe body 100 and the second composite pipe body 200 are respectively adapted to be plugged into the left and right ends of the anti-leakage connection assembly 300;

[0033] The leakage-proof connection assembly 300 includes an intermediate tube 301, a pair of third fixing rings 302 fixedly connected to the outer sides of both ends of the intermediate tube 301, and a fixing mechanism 303 for fixing the first fixing ring 101, the second fixing ring 201 and the third fixing ring 302 together. The fixing mechanism 303 is connected to the first positioning column 102 and the second positioning column 202.

[0034] Specifically, such as Figure 5 A fourth fixing ring 304 is fixedly connected to the inner wall of the middle part of the intermediate tube 301, and a first sealing ring 305 is provided on both the left and right sides of the fourth fixing ring 304. After the opposite ends of the first composite tube body 100 and the second composite tube body 100 are adapted and plugged into the intermediate tube 301, they are movably abutted against a pair of first sealing rings 305 respectively, and after abutment, the first fixing ring 101 and the second fixing ring 201 are both movably fitted with the third fixing ring 302.

[0035] Grooves 306 are provided at both ends of the intermediate tube 301, and a second sealing ring 307 is provided on the inner bottom wall of the groove 306. The first convex ring 103 and the second convex ring 203 are respectively adapted to be plugged into a pair of grooves 306, and the opposite sides of the first convex ring 103 and the second convex ring 203 are respectively movably abutted against a pair of second sealing rings 307.

[0036] In the above, by providing the first sealing ring 305 and the second sealing ring 307 , a double-layer sealing effect can be achieved, so that the sealing between the first composite tube body 100 and the second composite tube body 200 is good and leakage is not likely to occur.

[0037] Specifically, such as Figure 6-7 The fixing mechanism 303 includes a locking sleeve 303-1, a positioning hole 303-2 is provided on the inner top wall of the locking sleeve 303-1, and an insertion rod 303-4 is slidingly penetrated through the middle of the locking sleeve 303-1. The first fixing ring 101, the second fixing ring 201 and the third fixing ring 302 are all provided with through grooves corresponding to the insertion rod 303-4, and the insertion rod 303-4 slides through the through grooves. The locking sleeve 303-1 is fixedly connected to a positioning piece on the side away from the intermediate tube 301, and the two ends of the positioning piece are respectively adapted to be plugged into the two ends of the insertion rod 303-4. When the locking sleeve 303-1 is nested outside the first fixing ring 101 and the third fixing ring 302, the second fixing ring 201 and the third fixing ring 302, the positioning hole 303-2 is adapted to be engaged with the first positioning column 102 and the second positioning column 202.

[0038] The positioning member includes a sliding rod 303-5 fixedly connected to the side of the locking sleeve 303-1 away from the middle tube 301, a lifting plate 303-6 slidably connected to the sliding rod 303-5, a positioning rod 303-7 fixedly connected to both ends of the lifting plate 303-6, and a spring 303-3 fixedly connected between the lifting plate 303-6 and the locking sleeve 303-1. The spring 303-3 is movably sleeved on the outside of the sliding rod 303-5. A pair of positioning rods 303- 7 are respectively located on the left and right sides of the locking sleeve 303-1, and are adapted to be plugged into the reserved holes on the insertion rod 303-4. Through the plugging action of the positioning rod 303-7 and the insertion rod 303-4, the insertion rod 303-4 can be fixed, making it difficult for the insertion rod 303-4 to move, thereby ensuring the stability of the locking sleeve 303-1, thereby ensuring the stability and sealing of the first composite pipe body 100, the second composite pipe body 200 and the intermediate pipe 301.

[0039] In summary, after the opposite ends of the first composite tube body 100 and the second composite tube body 200 are adapted and plugged into the intermediate tube 301, they are movably abutted against the first sealing ring 305, which can improve the sealing between the first composite tube body 100 and the second composite tube body 200 and make leakage less likely to occur. In addition, the abutment between the first convex ring 103, the second convex ring 203 and the second sealing ring 307 can further improve the sealing between the first composite tube body 100 and the second composite tube body 200. Finally, the first composite tube body 100, the second composite tube body 200 and the intermediate tube 301 are fixedly connected together by the fixing mechanism 303, etc., which can ensure the sealing between the first composite tube body 100 and the second composite tube body 200. When the first fixing ring 101, the second fixing ring 201 and the third fixing ring 302 are fixedly connected together, first, the positioning hole 303-2 on the snap-fit sleeve 303-1 is aligned with the first positioning column 102 or the second positioning column 202 and plugged together. After the plugging is completed, the snap-fit sleeve 303-1 is nested outside the first fixing ring 101 and the third fixing ring 302 or the second fixing ring 201 and the third fixing ring 302, and then the insertion rod 303-4 is inserted through the snap-fit sleeve 303-1, the first fixing ring 101 and the third fixing ring 302 or the snap-fit sleeve 303-1, the second fixing ring 201 and the third fixing ring 302. Finally, the insertion rod 303-4 is fixed by the plugging action of the positioning rod 303-7 and the insertion rod 303-4 to complete the installation. The overall operation is simple, no other tools are required, and the installation efficiency is high. In addition, when the composite pipe needs to be disassembled, the positioning rod 303-7 is pulled by the lifting plate 303-6 to move and separate the positioning rod 303-7 from the insertion rod 303-4. After separation, the insertion rod 303-4 is pulled out from the locking sleeve 303-1, the first fixing ring 101, the second fixing ring 201 and the third fixing ring 302. After pulling out, the locking sleeve 303-1 is pulled out to complete the disassembly, which is convenient for the later replacement of the aged first sealing ring 305 and the second sealing ring 307.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A leak-proof metal composite pipe, characterized in that: include: A first composite tube body (100), wherein a first fixing ring (101) is fixedly sleeved on the outer side of the first composite tube body (100), and first positioning columns (102) are fixedly connected in an annular array on the outer side of the first fixing ring (101); A second composite tube body (200), wherein a second fixing ring (201) is fixedly sleeved on the outer side of the second composite tube body (200), and second positioning columns (202) are fixedly connected to the outer side of the second fixing ring (201) in an annular array; An anti-leakage connection assembly (300), wherein opposite ends of the first composite pipe body (100) and the second composite pipe body (200) are respectively adapted to be plugged into left and right ends of the anti-leakage connection assembly (300); The anti-leakage connection assembly (300) comprises an intermediate tube (301), a pair of third fixing rings (302) fixedly connected to the outer sides of both ends of the intermediate tube (301), and a fixing mechanism (303) for fixing the first fixing ring (101), the second fixing ring (201) and the third fixing ring (302) together, wherein the fixing mechanism (303) is connected to the first positioning column (102) and the second positioning column (202).

2. The leak-proof metal composite pipe according to claim 1, characterized in that: A fourth fixing ring (304) is fixedly connected to the inner wall of the middle portion of the intermediate tube (301), and first sealing rings (305) are provided on both the left and right sides of the fourth fixing ring (304). The opposite ends of the first composite tube body (100) and the second composite tube body (200) are movably abutted against a pair of first sealing rings (305).

3. The leak-proof metal composite pipe according to claim 2, characterized in that: Both ends of the intermediate tube (301) are provided with grooves (306), and the inner bottom wall of the groove (306) is provided with a second sealing ring (307). The outer side surfaces of the first composite tube body (100) and the second composite tube body (200) are respectively fixedly connected with a first convex ring (103) and a second convex ring (203). The first convex ring (103) and the second convex ring (203) are respectively adapted to be plugged into a pair of grooves (306), and the opposite sides of the first convex ring (103) and the second convex ring (203) are respectively in movably contact with a pair of second sealing rings (307).

4. The leak-proof metal composite pipe according to claim 1, characterized in that: The fixing mechanism (303) comprises a snap-fit sleeve (303-1), a positioning hole (303-2) is provided on the inner top wall of the snap-fit sleeve (303-1), an insertion rod (303-4) is slidably passed through the middle of the snap-fit sleeve (303-1), a positioning piece is fixedly connected to the side of the snap-fit sleeve (303-1) away from the intermediate tube (301), and two ends of the positioning piece are respectively adapted to be plugged into the two ends of the insertion rod (303-4), and the snap-fit sleeve (303-1) is nested outside the first fixing ring (101) and the third fixing ring (302), and outside the second fixing ring (201) and the third fixing ring (302).

5. The leak-proof metal composite pipe according to claim 4, characterized in that: The positioning member includes a sliding rod (303-5) fixedly connected to the side of the locking sleeve (303-1) away from the middle tube (301), a lifting plate (303-6) slidably connected to the sliding rod (303-5), a positioning rod (303-7) fixedly connected to both ends of the lifting plate (303-6), and a spring (303-3) fixedly connected between the lifting plate (303-6) and the locking sleeve (303-1), the spring (303-3) being movably sleeved on the outside of the sliding rod (303-5), and a pair of the positioning rods (303-7) being respectively located on the left and right sides of the locking sleeve (303-1), and both being adapted to be plugged into the reserved holes on the insertion rod (303-4).

6. The leak-proof metal composite pipe according to claim 1, characterized in that: Through slots are provided on the first fixing ring (101), the second fixing ring (201) and the third fixing ring (302) at locations corresponding to the insertion rod (303-4), and the insertion rod (303-4) slides through the through slots.

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