Connecting tool for small-caliber pipelines

Abstract

The utility model belongs to the technical field of pipeline construction, and mainly relates to a small-caliber pipeline connecting tool which comprises a sleeve connecting piece and two sleeve pieces. Birdmouths are formed in the opposite ends of the two external members; the sleeve connecting piece is located between the two sleeve pieces, socket heads are arranged at the two ends of the sleeve connecting piece, pressing parts are arranged on the outer walls of the socket heads, clamping blocks are arranged on the inner walls of the socket heads, and the clamping blocks and the pressing parts are located at the same axial position of the sleeve connecting piece; the outer diameter of the socket head is in interference fit with the inner diameter of the birdmouth, and after the socket head is matched with the corresponding birdmouth in an inserted mode, the pressing part is stressed so that the clamping block can be clamped into the steel pipe. According to the utility model, the pressing part is extruded by the external member, so that the clamping block is pressed into the steel pipe to realize high-pressure-resistant, vibration-resistant and permanent pure mechanical connection between the sleeve connecting piece and the steel pipe, the corrosion-resistant inner coating and the inner repaired mouth of the two sections of steel pipes cannot be damaged by generated heat, and the service life of the steel pipe is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline construction, and mainly relates to a connecting tool for small-diameter pipelines. Background Art

[0002] In the construction of oilfield surface gathering and transportation pipelines, small-diameter steel pipes are usually used. Since the length of the steel pipes is not long enough, multiple steel pipes need to be connected together. The traditional connection method is mainly welding, welding the adjacent ends of two steel pipes together. The traditional welding method requires special equipment and processes, and has high technical requirements for operators. Once the steel pipe is damaged during welding, it is difficult to repair. In order to ensure firmness and sealing during connection, it must be welded through. During this welding process, heat will be generated. The heat transferred to the steel pipe will inevitably damage the inner coating of the steel pipe, thereby destroying the continuity of the anti-corrosion layer on the inner surface of the steel pipe, resulting in the damage of the patch inside the steel pipe, which in turn makes the steel pipe susceptible to corrosion and reduces the service life of the steel pipe. Utility Model Content

[0003] The utility model provides a connecting tool for small-diameter pipelines, which solves the problem in the prior art that the anti-corrosion inner coating of the steel pipe is easily corroded during welding, resulting in a short service life of the steel pipe.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] A tool for connecting small-diameter pipes, comprising a sleeve connector and two kits with identical structures; the two kits are respectively used to be sleeved on the adjacent ends of two steel pipes, and the opposite ends of the two kits are each provided with a socket interface; the sleeve connector is used to be sleeved on the connection between the two steel pipes and is located between the two kits, and both ends of the sleeve connector are provided with socket plugs, the outer wall of the socket plug is provided with a pressing portion, and the inner wall of the socket plug is provided with a clamping block, and the clamping block and the pressing portion are located at the same axial position of the sleeve connector; the outer diameter of the socket plug and the inner diameter of the socket interface are interference fit, and after the socket plug is plugged into the corresponding socket interface, the pressing portion is subjected to force to cause the clamping block to be clamped into the steel pipe.

[0006] Beneficial effect: When the present invention is in use, first, the two sets are respectively sleeved on the adjacent ends of the two steel pipes, and then the adjacent ends of the two steel pipes are respectively inserted into the sleeve connector, and the adjacent ends of the two steel pipes are close together in the sleeve connector, and the sleeve connector is fixed. The socket interfaces on the two sets are respectively squeezed onto the socket plugs on the sleeve connector by external force. During the squeezing process, the set can squeeze the pressing part in the direction of the axis of the set so that the block is pressed into the steel pipe to achieve the connection between the two steel pipes.

[0007] Traditional welding will conduct heat, and the heat transferred to the inside of the steel pipe will destroy the anti-corrosion inner coating and the inner patch of the two sections of steel pipe, reducing the service life of the steel pipe. The utility model makes it possible to connect steel pipes without welding. The socket plug is plugged into the corresponding socket interface, and the socket plug and the socket are interference fit. The clamping block is pressed into the steel pipe through the extrusion and pressing part of the kit. The sleeve connector and the outer surface of the steel pipe are pressed together with high strength to cause plastic deformation of the steel pipe to achieve a high-pressure, vibration-resistant, and permanent pure mechanical connection between the sleeve connector and the steel pipe. The anti-corrosion inner coating and the inner patch of the two sections of steel pipe will not be destroyed due to the heat generated, thereby improving the service life of the steel pipe. At the same time, pressing the clamping block into the steel pipe can ensure that the two steel pipes will not fall out of the sleeve connector, thereby improving the tensile strength of the steel pipe after being connected to the sleeve connector.

[0008] Furthermore, the pressing portion protrudes outward from the outer wall of the socket, and the clamping block protrudes inward from the inner wall of the socket.

[0009] Furthermore, the pressing portion is an arc-shaped structure, and the clamping block is a conical structure.

[0010] Beneficial effects: The pressing area of ​​the arc-shaped pressing part is larger, which reduces the use of external force, and the conical structure of the clamping block reduces the contact area between the clamping block and the steel pipe, making it easier for the clamping block to be inserted into the steel pipe, thereby reducing the use of external force for a second time and saving energy.

[0011] Furthermore, the pressing portion and the clamping block structure are provided in multiple groups at intervals in the axial direction of the sleeve connector.

[0012] Beneficial effect: The structure of multiple groups of pressing parts and clamping blocks further enhances the tensile strength of the steel pipe after being connected to the sleeve connector.

[0013] Furthermore, the structures of multiple groups of pressing parts and clamping blocks are arranged at equal intervals in the axial direction of the sleeve connector.

[0014] Furthermore, the ends of the two sets of sleeves are respectively provided with a circle of flanges, and the two ends of the sleeve connector are respectively provided with a circle of grooves that correspond to and match the flanges one by one. When the sleeve connector and the set are plugged in, the flanges are stuck in the grooves.

[0015] Beneficial effect: After the sleeve connector is plugged into the kit, the flange is snapped into the groove to ensure that the socket and the socket are properly matched, which is convenient for construction.

[0016] Furthermore, an annular groove is provided in the middle of the sleeve connector.

[0017] Beneficial effect: the annular groove facilitates external clamping and fixing of the sleeve connector.

[0018] Furthermore, adhesive is applied between the steel pipe and the sleeve connector, and between the sleeve connector and the kit.

[0019] Beneficial effects: The adhesive can make the connection between the steel pipe and the sleeve connector, and between the sleeve connector and the kit more secure, and the adhesive increases the sealing between the two steel pipes.

[0020] Furthermore, the inner diameter of the sleeve connector is equal to the outer diameter of the steel pipe.

[0021] Beneficial effect: The inner diameter of the sleeve connector is smaller than the outer diameter of the steel pipe, and the sleeve connector and the steel pipe are interference fit to increase the friction between the steel pipe and the sleeve connector, further enhancing the tensile strength after the steel pipe and the sleeve connector are connected.

[0022] Furthermore, the length of the socket is greater than the length of the socket plug.

[0023] Beneficial effect: The length of the socket is greater than the length of the socket plug, which can ensure that the flange can be fully inserted into the groove when the socket plug is inserted into the socket, making construction easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 for Figure 1 Middle AA section view;

[0027] Figure 3 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0028] Figure 4 It is a schematic diagram of the assembly of the kit and the sleeve connector;

[0029] Figure 5 for Figure 4 Middle CC section view;

[0030] Figure 6 for Figure 5 Enlarged schematic diagram at point D in the middle.

[0031] Description of reference numerals:

[0032] 1. Kit; 2. Socket plug; 3. Pressing part; 4. Sleeve connector; 5. Socket interface; 6. Flange;

[0033] 7. Groove; 8. Block. DETAILED DESCRIPTION

[0034] 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. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0035] The following describes various non-limiting embodiments of the present invention. The numbers of any elements in the accompanying drawings are for illustrative purposes only and are not intended to be limiting. Any nomenclature is provided for distinction only and does not have any limiting meaning. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with one another unless there is a conflict.

[0036] Embodiment 1 of a small-diameter pipe connection tool provided by the present invention:

[0037] like Figure 1 and Figure 2 As shown, the small-diameter pipe connection tool includes a sleeve connector 4 and two sets 1 with the same structure.

[0038] The two sets of sleeves 1 are respectively sleeved on the adjacent ends of the two steel pipes, and the opposite ends of the two sets of sleeves 1 are both provided with a socket 5.

[0039] The sleeve connector 4 is sleeved at the connection of the two steel pipes and located between the two kits 1. Socket plugs 2 are provided at both ends of the sleeve connector 4. The socket plugs 2 can be inserted into the corresponding socket interface 5 and the outer diameter of the socket plug 2 is interference fit with the inner diameter of the socket interface 5; an arc-shaped pressing portion 3 is provided on the outer wall of the socket plug 2, and the pressing portion 3 protrudes outward from the outer wall of the socket plug 2. A conical-structured clamping block 8 is provided on the inner wall of the socket plug 2, and the clamping block 8 protrudes inward from the inner wall of the socket plug 2, and the clamping block 8 and the pressing portion 3 are located at the same axial position of the sleeve connector 4.

[0040] After the socket plug 2 is plugged into the corresponding socket interface 5, the pressing part 3 is pressed by the kit 1 to enable the clamping block 8 to be clamped into the steel pipe to realize the connection between the two steel pipes and the sleeve connector 4. The pressing area of ​​the pressing part 3 with an arc structure is larger, which reduces the use of external force, and the clamping block 8 with a conical structure reduces the contact area between the clamping block 8 and the steel pipe, making it easier for the clamping block 8 to be clamped into the steel pipe, thereby reducing the use of external force for a second time and saving energy. At the same time, pressing the clamping block 8 into the steel pipe can ensure that the two steel pipes will not fall out of the sleeve connector 4, thereby improving the tensile strength after the steel pipe and the sleeve connector 4 are connected.

[0041] Three sets of pressing portions 3 and clamping blocks 8 are arranged at equal intervals along the axial direction of the sleeve connector 4. These three sets of pressing portions 3 and clamping blocks 8 further enhance the tensile strength of the steel pipe after connection to the sleeve connector 4. The inner diameter of the sleeve connector 4 is smaller than the outer diameter of the steel pipe. The sleeve connector 4 creates an interference fit with the steel pipe, increasing friction between the two, further enhancing the tensile strength of the connection. The length of the socket 5 is greater than that of the socket plug 2, ensuring that the flange 6 is fully inserted into the groove 7 when the socket plug 2 is inserted into the socket 5, facilitating installation.

[0042] The ends of the two sets 1 at opposite ends are respectively provided with a circle of flanges 6, and the two ends of the sleeve connector 4 are respectively provided with a circle of grooves 7 that correspond one-to-one and are adapted to the flanges 6. When the sleeve connector 4 is plugged into the set 1, the flange 6 is inserted into the groove 7 to ensure that the socket and the socket 5 are properly fitted, which is convenient for construction.

[0043] An annular groove is provided in the middle of the sleeve connector 4 , and the annular groove facilitates external clamping and fixing of the sleeve connector 4 .

[0044] Adhesive is applied between the steel pipe and the sleeve connector 4, and between the sleeve connector 4 and the kit 1. The adhesive can make the connection between the steel pipe and the sleeve connector 4, and between the sleeve connector 4 and the kit 1 more secure, and the adhesive increases the sealing between the two steel pipes.

[0045] The working process of this utility model is as follows:

[0046] When the present invention is in use, first, the two sets 1 are respectively sleeved on the adjacent ends of the two steel pipes, and then the adjacent ends of the two steel pipes are respectively inserted into the sleeve connector 4, and the adjacent ends of the two steel pipes are close to each other in the sleeve connector 4, and the sleeve connector 4 is fixed. The socket interfaces 5 on the two sets 1 are respectively squeezed onto the socket plug 2 on the sleeve connector 4 by external force. During the squeezing process, the set 1 can squeeze the pressing part 3 in the direction of the axis of the set 1 so that the clamping block 8 is pressed into the steel pipe to achieve the connection between the two steel pipes.

[0047] Traditional welding will conduct heat, and the heat transferred to the inside of the steel pipe will destroy the anti-corrosion inner coating and the inner patch of the two sections of steel pipe, reducing the service life of the steel pipe. The utility model makes it possible to connect steel pipes without welding. The socket plug 2 is plugged into the corresponding socket interface 5, and the socket plug 2 is interference fit with the socket. The pressing part 3 is squeezed by the kit 1 to press the clamping block 8 into the steel pipe. The sleeve connector 4 is pressed with the outer surface of the steel pipe with high strength to cause plastic deformation of the steel pipe to achieve a high-pressure, vibration-resistant, and permanent pure mechanical connection between the sleeve connector 4 and the steel pipe. The anti-corrosion inner coating and the inner patch of the two sections of steel pipe will not be destroyed due to the heat generated, thereby improving the service life of the steel pipe. At the same time, pressing the clamping block 8 into the steel pipe can ensure that the two steel pipes will not fall out of the sleeve connector 4, thereby improving the tensile strength of the steel pipe after being connected to the sleeve connector 4.

[0048] Embodiment 2 of a small-diameter pipe connection tool provided by the present invention:

[0049] The main difference between this embodiment and the first embodiment is that the pressing portion adopts an arc-shaped structure in the first embodiment. In this embodiment, the pressing portion may also adopt a rectangular structure and is not limited to the above-mentioned arc-shaped structure.

[0050] Embodiment 3 of a small-diameter pipe connection tool provided by the present invention:

[0051] The main difference between this embodiment and embodiment 1 is that in embodiment 1, multiple groups of pressing parts and clamping blocks are provided at intervals in the axial direction of the sleeve connector. In this embodiment, only one group of pressing parts and clamping blocks can be provided.

Claims

1. A tool for connecting small-diameter pipes, characterized in that: Includes sleeve connector and two kits of identical construction; The two sets of sleeves are respectively used to be sleeved on the adjacent ends of two steel pipes, and the opposite ends of the two sets of sleeves are both provided with a socket; The sleeve connector is used to be sleeved at the connection of two steel pipes and located between the two sets of sleeves. Both ends of the sleeve connector are provided with sockets, the outer wall of the socket is provided with a pressing portion, and the inner wall of the socket is provided with a clamping block. The clamping block and the pressing portion are located at the same axial position of the sleeve connector. The outer diameter of the socket plug is interference-fitted with the inner diameter of the socket interface. After the socket plug is plugged into the corresponding socket interface, the pressing part is subjected to force to enable the clamping block to be clamped into the steel pipe.

2. The small-diameter pipe connection tool according to claim 1, characterized in that: The pressing portion protrudes outward from the outer wall of the socket, and the clamping block protrudes inward from the inner wall of the socket.

3. The small-diameter pipe connection tool according to claim 2, characterized in that: The pressing portion is an arc-shaped structure, and the clamping block is a conical structure.

4. The small-diameter pipe connection tool according to claim 3, characterized in that: The pressing portion and the clamping block structure are provided in multiple groups at intervals in the axial direction of the sleeve connector.

5. The small-diameter pipe connection tool according to claim 4, characterized in that: The structures of the multiple pressing parts and the clamping blocks are arranged at equal intervals in the axial direction of the sleeve connector.

6. A small-diameter pipe connection tool according to any one of claims 1 to 5, characterized in that: The ends of the two sets of sleeves at opposite ends are respectively provided with a circle of flanges, and the two ends of the sleeve connector are respectively provided with a circle of grooves that correspond to and match the flanges one by one. When the sleeve connector is plugged into the sleeve, the flanges are stuck in the grooves.

7. A small-diameter pipe connection tool according to any one of claims 1 to 5, characterized in that: An annular groove is provided in the middle of the sleeve connector.

8. A small-diameter pipe connection tool according to any one of claims 1 to 5, characterized in that: Adhesive is applied between the steel pipe and the sleeve connector, and between the sleeve connector and the kit.

9. The small-diameter pipe connection tool according to claim 8, characterized in that: The inner diameter of the sleeve connector is smaller than the outer diameter of the steel pipe.

10. A small-diameter pipe connection tool according to any one of claims 1 to 5, characterized in that: The length of the socket interface is greater than the length of the socket plug.

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