Oxygen-free copper pipe with square outside and round inside

Abstract

The utility model discloses an oxygen-free copper pipe with a square outside and a round inside, which comprises a copper pipe body, the cross section of the copper pipe body is square, and a round hole is arranged in the copper pipe body along the length direction of the copper pipe body; a supporting layer is arranged in the round hole, an anti-corrosion layer is arranged in the supporting layer, and a pressure-resistant protection layer is arranged on the outer surface of the copper pipe body. A convex square block is installed on one end face of the copper pipe body, a concave square groove matched with the square block is formed in the other end face of the copper pipe body, the square block and the square groove are movably connected through a movable inserting mechanism, and the movable inserting mechanism is fixed through a limiting mechanism. The corrosion-resistant copper pipe is good in corrosion resistance and high in strength, the service life is prolonged, a plurality of copper pipe bodies can be conveniently spliced, and the corrosion-resistant copper pipe can be repeatedly assembled and disassembled for use.

Description

Technical Field

[0001] The utility model relates to the technical field of copper pipes, and particularly relates to an oxygen-free copper pipe with a square outer shape and a circular inner shape. Background Technique

[0002] In some fields of atomic energy industry and electrical machinery industry, materials with good electrical conductivity are often used as conductive components. During the conduction process, the generated heat energy must be quickly dissipated to reduce the temperature of the components. The square outer and circular inner copper pipe has the characteristics of a large conductive cross-section, a large flow rate of the cooling medium per unit time, and good heat dissipation performance, and is used by the atomic energy industry and the electrical machinery industry as a key material for manufacturing various motors and accelerators.

[0003] In the prior art, the utility model patent with the publication number of CN204720178U discloses an oxygen-free copper pipe with a square outer shape and a circular inner shape. By providing a circular through-hole in the middle of the red copper rod body, the diameter of the through-hole is 1 / 2 of the width of the red copper rod body, the through-hole penetrates the red copper rod body, and the surface of the inner wall of the through-hole is smooth, so that the component has the advantages of a large conductive cross-section, a fast heat dissipation speed, and the service life of the component can be improved after long-term use.

[0004] However, when the above copper pipe is in use, it is in direct contact with the fluid and is easily corroded. The strength of the copper pipe is relatively weak, and the pressure resistance performance is relatively poor, shortening the service life of the copper pipe. And when the length of the copper pipe is not enough and additional copper pipes need to be added, the copper pipes need to be connected. The commonly used connection method is generally high-temperature welding connection, which cannot be disassembled and assembled repeatedly for use. Therefore, it does not meet the existing requirements, and for this reason, we propose an oxygen-free copper pipe with a square outer shape and a circular inner shape. Content of the Utility Model

[0005] The purpose of the utility model is to provide an oxygen-free copper pipe with a square outer shape and a circular inner shape to solve the problems raised in the above background technique, that is, when the above copper pipe is in use, it is in direct contact with the fluid and is easily corroded. The strength of the copper pipe is relatively weak, and the pressure resistance performance is relatively poor, shortening the service life of the copper pipe. And when the length of the copper pipe is not enough and additional copper pipes need to be added, the copper pipes need to be connected. The commonly used connection method is generally high-temperature welding connection, which cannot be disassembled and assembled repeatedly for use.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An oxygen-free copper pipe with a square outer shape and a circular inner shape, including a copper pipe body, the cross-sectional shape of the copper pipe body is square, and a circular hole is provided in the copper pipe body along its length direction;

[0008] A support layer is arranged in the circular hole, an anti-corrosion layer is arranged in the support layer, and a pressure-resistant protective layer is arranged on the outer surface of the copper pipe body;

[0009] One end face of the copper tube body is provided with an outwardly convex square block, and the other end face is provided with an inwardly concave square groove adapted to the square block. The square block and the square groove are movably connected through a movable plugging mechanism, and the movable plugging mechanism is fixed through a limiting mechanism.

[0010] Further: The movable plugging mechanism includes a plug rod and a through hole communicated with the square groove. The plug rod is connected in the through hole through a spring;

[0011] The outer end face of the square block is provided with a limiting hole, and the plug rod is adapted to the limiting hole.

[0012] Further: On the opposite sides of the outer surfaces of every two plug rods, a pull plate is installed. The lower end face of the pull plate is provided with a clamping groove. The limiting mechanism includes a fixing plate fixedly connected to the outer surface of the copper tube body. A threaded hole is penetrated through the upper end face of the fixing plate.

[0013] Further: The inner side of the threaded hole is rotationally connected with a threaded rod through a thread. The upper end face of the threaded rod is provided with a clamping block. The lower end face of the clamping block is rotationally connected to the upper end face of the threaded rod through a bearing. The clamping block is adapted to the clamping groove.

[0014] Further: There are four square blocks and square grooves respectively. The four square blocks and square grooves are arranged at the four corners of the end face of the copper tube body.

[0015] Further: The inside of the support layer is filled with aluminum alloy.

[0016] Further: The anti-corrosion layer is a polytetrafluoroethylene coating.

[0017] Further: The pressure-resistant protective layer is a pressure-resistant protective layer made of steel alloy.

[0018] Further: A sealing ring is installed at the bottom of the inner wall of the round hole. The outer surface of the sealing ring fits with the inner wall of the round hole.

[0019] Further: The diameter of the round hole is 2 / 3 of the width of the copper tube body.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] 1. By providing a square block, a square groove and a movable plugging mechanism, the present utility model facilitates the splicing of two copper tube bodies. Align the square block of one copper tube body with the square groove of another copper tube body, and realize the connection of the two copper tubes through the movable plugging mechanism. The utility model facilitates the splicing of multiple copper tube bodies and can be repeatedly assembled and disassembled for use;

[0022] 2. The utility model is provided with an anti-corrosion layer, a support layer, and a pressure-resistant protection layer, thereby ensuring that the copper tube body will not be corroded by the fluid and extending the service life of the copper tube body; the utility model has good corrosion resistance and high strength, and improves the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the whole utility model;

[0024] Figure 2 is a schematic structural diagram of the copper tube body of the utility model;

[0025] Figure 3 is a main sectional view of the copper tube body of the utility model;

[0026] Figure 4 is a top sectional view of the copper tube body of the utility model.

[0027] In the figure: 1. Copper tube body; 2. Limit mechanism; 201. Threaded rod; 202. Threaded hole; 203. Fixed plate; 204. Block; 3. Square block; 4. Sealing ring; 5. Round hole; 6. Limit hole; 7. Square groove; 8. Movable plugging mechanism; 801. Pulling plate; 802. Card slot; 803. Spring; 804. Through hole; 805. Plug; 9. Anti-corrosion layer; 10. Support layer; 11. Pressure-resistant protection layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] Please refer to Figures 1 to 4 , an embodiment provided by the present utility model: an oxygen-free copper tube with a square outside and a round inside, including a copper tube body 1. The cross-sectional shape of the copper tube body 1 is square, and a round hole 5 along its length direction is provided inside the copper tube body 1; a support layer 10 is arranged inside the round hole 5, an anti-corrosion layer 9 is arranged inside the support layer 10, and a pressure-resistant protection layer 11 is arranged on the outer surface of the copper tube body 1; a convex square block 3 is installed on one end surface of the copper tube body 1, and a concave square groove 7 adapted to the square block 3 is provided on the other end surface. The square block 3 and the square groove 7 are movably connected through a movable plugging mechanism 8, and the movable plugging mechanism 8 is fixed through a limit mechanism 2.

[0030] When this application is in use, the square blocks 3 at both ends of the copper tube are connected to the square grooves 7 by using the movable plugging mechanism 8 and fixed by the limiting mechanism 2. It is convenient to splice multiple copper tube bodies and can be repeatedly assembled and disassembled for use. The copper tube body is designed with a square cross-section. Compared with traditional circular tubes, it can provide better bending moment resistance and stability when subjected to external pressure, and is especially suitable for occasions that require high structural strength. The internal round hole design is beneficial to the smooth flow of fluids, reduces eddy currents and resistance, and improves transmission efficiency. The support layer and anti-corrosion layer provided in the round hole can not only enhance the mechanical strength of the tube body, prevent the round hole from deforming under high pressure or vibration environments, but also the anti-corrosion layer can effectively resist corrosion factors in the environment or the transported medium, and extend the service life of the copper tube. The pressure-resistant protective layer on the outer surface can be a coating or a composite material layer, which can increase the resistance of the copper tube to external physical damage.

[0031] The following is an illustration of this application through a specific embodiment.

[0032] An oxygen-free copper tube with a square outside and a round inside includes a copper tube body 1. A round hole 5 is provided in the middle of the copper tube body 1. A support layer 10 is provided inside the round hole 5, and an anti-corrosion layer 9 is provided inside the support layer 10. A pressure-resistant protective layer 11 is provided on the outer surface of the copper tube body 1. Square blocks 3 are installed at the four end corners of the upper end face of the copper tube body 1. Limiting holes 6 are provided on the opposite sides of the outer surfaces of every two square blocks 3. Square grooves 7 are provided at the four end corners of the lower end face of the copper tube body 1. The square blocks 3 and the square grooves 7 are movably connected by a movable plugging mechanism 8, and the movable plugging mechanism 8 is fixed by a limiting mechanism 2.

[0033] Furthermore, the movable plugging mechanism 8 includes a plug rod 805. The plug rod 805 is arranged in front and back below both sides of the outer surface of the copper tube body 1 through a through hole 804. A spring 803 is sleeved on the outer surface of the plug rod 805. The plug rod 805 is adapted to the limiting hole 6, and the plug rod 805 can be inserted into the inside of the limiting hole 6 to limit the square block 3.

[0034] Pulling plates 801 are installed on the opposite sides of the outer surfaces of every two plug rods 805. A clamping groove 802 is provided on the lower end face of the pulling plate 801. The limiting mechanism 2 includes a fixing plate 203. The fixing plate 203 is fixedly connected to the outer surface of the copper tube body 1. A threaded hole 202 is provided through the upper end face of the fixing plate 203; a threaded rod 201 is rotationally connected inside the threaded hole 202 through threads. A clamping block 204 is provided on the upper end face of the threaded rod 201. The lower end face of the clamping block 204 is rotationally connected to the upper end face of the threaded rod 201 through a bearing. The clamping block 204 is adapted to the clamping groove 802. The threaded rod 201 can move up and down inside the threaded hole 202, driving the clamping block 204 to move up and down. The clamping block 204 can be inserted into the inside of the clamping groove 802 to limit the pulling plate 801.

[0035] The interior of the support layer 10 is filled with high-strength and lightweight aluminum alloy, and the anti-corrosion layer 9 is a polytetrafluoroethylene coating; the pressure-resistant protective layer 11 is made of steel alloy material, so as to ensure that the copper tube body 1 is not corroded by the fluid, extend the service life of the copper tube body 1, and the pressure-resistant protective layer 11 and the support layer 10 enable the copper tube body 1 to have higher strength.

[0036] A sealing ring 4 is installed at the bottom of the inner wall of the round hole 5, and the outer surface of the sealing ring 4 fits with the inner wall of the round hole 5. The diameter of the round hole 5 is 2 / 3 of the width of the copper tube body 1, which improves the sealing performance at the connection of the two copper tube bodies 1.

[0037] When the oxygen-free copper tube with a square outside and a round inside is in use, by providing the square block 3, the square groove 7, and the movable plugging mechanism 8, it is convenient to splice the two copper tube bodies 1. Align the square block 3 of one copper tube body 1 with the square groove 7 of the other copper tube body 1. At the same time, pull the four insertion rods 805 outwards. After the square block is inserted into the inside of the square groove, release the insertion rods 805. Under the action of the spring 803, the insertion rods 805 are inserted into the inside of the limiting hole 6 to limit the square block 3. By providing the limiting mechanism 2, the threaded rod 201 can be rotated to make the threaded rod 201 move upwards inside the threaded hole 202, driving the clamping block 204 to move upwards and be inserted into the inside of the clamping groove 802 below the pull plate 801 to limit the pull plate 801, and further limit the insertion rods 805, further improving the stability of the square block 3 inside the square groove 7 and the connection stability of the two copper tube bodies 1. By providing the sealing ring 4, the sealing performance at the connection of the two copper tube bodies 1 is improved. And by providing the anti-corrosion layer 9, the support layer 10, and the pressure-resistant protective layer 11, the anti-corrosion layer 9 is a polytetrafluoroethylene coating, so as to ensure that the copper tube body 1 is not corroded by the fluid and extend the service life of the copper tube body 1; the interior of the support layer 10 is filled with high-strength and lightweight aluminum alloy, and the pressure-resistant protective layer 11 is made of alloy material, making the copper tube body 1 have higher strength. This utility model has good corrosion resistance, high strength, improves the service life, and is convenient for splicing multiple copper tube bodies 1, and can be disassembled and assembled repeatedly for use.

[0038] For those skilled in the art, it is obvious that this utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of this utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in this utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An oxygen-free copper tube with a square outer surface and a round inner surface, comprising a copper tube body (1), characterized in that: The cross-sectional shape of the copper tube body (1) is square, and a circular hole (5) is provided inside the copper tube body (1) along its length direction; A support layer (10) is provided in the circular hole (5), an anti-corrosion layer (9) is provided in the support layer (10), and a pressure-resistant protective layer (11) is provided on the outer surface of the copper tube body (1); An outwardly convex square block (3) is mounted on one end surface of the copper tube body (1), and an inwardly concave square groove (7) adapted to the square block (3) is provided on the other end surface; the square block (3) and the square groove (7) are movably connected via a movable plug-in mechanism (8), and the movable plug-in mechanism (8) is fixed via a limiting mechanism (2).

2. The oxygen-free copper tube with a square outer surface and a round inner surface according to claim 1, characterized in that: The movable plug-in mechanism (8) comprises an insertion rod (805) and a through hole (804) connected to the square groove (7); the insertion rod (805) is connected to the through hole (804) via a spring (803); The outer end surface of the square block (3) is provided with a limiting hole (6), and the insertion rod (805) is adapted to fit the limiting hole (6).

3. The oxygen-free copper tube with a square outer surface and a round inner surface according to claim 2, characterized in that: A pull plate (801) is installed on the opposite side of the outer surface of each two of the insertion rods (805), and a clamping groove (802) is provided on the lower end surface of the pull plate (801). The limiting mechanism (2) comprises a fixing plate (203), and the fixing plate (203) is fixedly connected to the outer surface of the copper tube body (1), and a threaded hole (202) is provided through the upper end surface of the fixing plate (203).

4. The oxygen-free copper tube with a square outer surface and a round inner surface according to claim 3, characterized in that: The inner side of the threaded hole (202) is rotatably connected to a threaded rod (201) via a thread, the upper end surface of the threaded rod (201) is provided with a clamping block (204), the lower end surface of the clamping block (204) is rotatably connected to the upper end surface of the threaded rod (201) via a bearing, and the clamping block (204) is adapted to the clamping groove (802).

5. The oxygen-free copper tube with a square outer surface and a round inner surface according to claim 1, characterized in that: There are four square blocks (3) and four square grooves (7), and the four square blocks (3) and four square grooves (7) are arranged at the four corners of the end surface of the copper tube body (1).

6. The oxygen-free copper tube with a square outer surface and a round inner surface according to claim 1, characterized in that: The interior of the support layer (10) is filled with aluminum alloy.

7. The oxygen-free copper tube with a square outer surface and a round inner surface according to claim 1, characterized in that: The anti-corrosion layer (9) is a polytetrafluoroethylene coating.

8. The oxygen-free copper tube with a square outer surface and a round inner surface according to claim 1, characterized in that: The pressure-resistant protective layer (11) is a pressure-resistant protective layer made of a steel alloy.

9. The oxygen-free copper tube with a square outer surface and a round inner surface according to claim 1, characterized in that: A sealing ring (4) is installed at the bottom of the inner wall of the circular hole (5), and the outer surface of the sealing ring (4) is in contact with the inner wall of the circular hole (5).

10. The oxygen-free copper tube with a square outer surface and a round inner surface according to claim 1, characterized in that: The diameter of the circular hole (5) is 2 / 3 of the width of the copper tube body (1).

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