Adjustable degaussing device for tail end of steel pipe

Abstract

The utility model relates to an adjustable degaussing device for the tail end of a steel pipe, which comprises a degaussing coil, a voltage regulator, a direct-current rectifying device and a coil adjusting mechanism, the voltage regulator is connected with a power supply, the direct-current rectifying device is electrically connected with the voltage regulator, and the degaussing coil is electrically connected with a lead of the direct-current rectifying device to form an electric path. A pair of sliding grooves are formed in the coil adjusting mechanism, the coil adjusting mechanism is arranged between the degaussing coil and the direct-current rectifying device, the degaussing coil is electrically connected with a wire of the direct-current rectifying device in the sliding grooves through a wire connector, and the wire connector can be arranged in the sliding grooves in a sliding mode. And an adjusting mechanism capable of controlling the length of the degaussing coil wire exposed out of the chute is formed. The device can adjust the diameter of the degaussing coil by using the coil adjusting mechanism, the size of the degaussing coil can be adjusted more smoothly and more easily by using the sliding groove and the wire connector, and the fixing effect of the wiring position is improved by using the wiring piece and the internal partition plate.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe demagnetization equipment, and in particular to an adjustable steel pipe end demagnetization device. Background Technology

[0002] Steel pipes, as the primary pipeline material for transporting fluids or powders, typically require welding during manufacturing. The welding head and welding wire generate a long magnetic field due to the high current, and the steel pipe body, under the influence of this magnetic field, experiences hysteresis, leaving strong residual magnetism. This residual magnetism can cause arc deviation or spatter during subsequent circumferential welding of the steel pipe, affecting the welding quality. Therefore, demagnetization of the steel pipe is necessary. However, currently recommended demagnetization devices are fixed and cannot be adapted to different shapes and sizes of steel pipes. In view of this, this application is hereby submitted. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model discloses an adjustable steel pipe end demagnetizing device, which includes a demagnetizing coil, a voltage regulator, a DC rectifier, and a coil adjustment mechanism. The voltage regulator is connected to a power source, the DC rectifier is electrically connected to the voltage regulator, and the demagnetizing coil is electrically connected to the wires of the DC rectifier to form an electrical path. The coil adjustment mechanism has a pair of sliding grooves and is located between the demagnetizing coil and the DC rectifier. The wires of the demagnetizing coil and the DC rectifier are electrically connected in the sliding grooves through a connector. The connector is slidably located in the grooves, forming an adjustment mechanism that can control the length of the demagnetizing coil wires protruding from the sliding grooves.

[0004] Specifically, the connector includes a connector capable of accommodating wires and a partition disposed within the connector. The connector is a pipe structure that is closed on the side and open at both ends. The partition consists of three layers, which are disposed separately within the connector, forming two layers of wire-pressing space between adjacent partitions.

[0005] Specifically, the connector is an arched pipe composed of an arc-shaped surface and a straight surface, and a pair of threaded holes are opened on the straight surface along the length of the pipe. A screw is threadedly connected to the threaded hole. An opening is provided on the partition plate at the position corresponding to the threaded hole. The screw passes through the threaded hole and the opening of the partition plate, and a locking block is fixed to the end, forming a fastening mechanism that can press the wire space by turning the screw.

[0006] Specifically, the bottom of the groove is an arc-shaped structure that matches the arc-shaped surface of the connector, and the groove opening is constricted, with a gap through which the screw can pass. The screw protrudes from the groove opening, forming a slot that limits the connector to slide within the groove.

[0007] Specifically, a clamping member is provided at the groove opening position. The clamping member has a through hole and a thread inside the through hole. The screw passes through the through hole and is threadedly connected to the threaded hole, forming a fixing mechanism in which the clamping member can move along the screw and can approach and clamp the groove opening with the straight surface of the connector.

[0008] Specifically, the partition located in the middle layer has concave arc-shaped notches at both ends of the demagnetizing coil and the DC rectifier.

[0009] Specifically, the connector and screw are made of insulating material, and the partition is made of conductive material.

[0010] Specifically, the DC rectifier and the demagnetizing coil are also electrically connected by a switching device that can adjust the direction of the coil's magnetic field.

[0011] Specifically, it also includes a shaping ring, which is a semi-enclosed ring and has a groove on it for embedding the demagnetizing coil wire, forming a structure for fixing the shape of the demagnetizing coil.

[0012] Advantages and effects

[0013] This device allows for adjustment of the demagnetizing coil diameter using a coil adjustment mechanism. The use of a sliding groove and connector makes coil size adjustment smoother and easier. The use of connectors and internal partitions improves the fixation of the connector position, eliminating concerns about wire misalignment during coil size adjustment. The use of a tapered sliding groove with a clamping component ensures the connector position is fixed, improving the coil's position stability and retention after adjustment. The use of a shaping ring allows the demagnetizing coil to complete shape or size adjustments more quickly after adjustment, increasing coil adjustment efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the adjustable steel pipe end demagnetizing device of this utility model;

[0015] Figure 2 This is one of the structural schematic diagrams of the coil adjustment mechanism of this utility model;

[0016] Figure 3 This is the second schematic diagram of the coil adjustment mechanism of this utility model;

[0017] Figure 4 This is the third schematic diagram of the coil adjustment mechanism of this utility model.

[0018] Legend: 1. Demagnetizing coil; 2. Voltage regulator; 3. DC rectifier; 4. Coil adjustment mechanism; 41. Slide groove; 42. Connector; 421. Wiring component; 422. Partition plate; 423. Threaded hole; 424. Screw; 425. Locking block; 43. Clamping component; 5. Changeover switch; 6. Shaping ring. Detailed Implementation

[0019] The present invention will be further described below with reference to embodiments, but is not limited to the contents of the specification.

[0020] like Figure 1 and Figure 2 As shown, this utility model relates to an adjustable steel pipe end demagnetizing device, which includes a demagnetizing coil 1, a voltage regulator 2, a DC rectifier 3, and a coil adjustment mechanism 4. The voltage regulator 2 is connected to a power source, and the DC rectifier 3 is electrically connected to the voltage regulator 2. The wires of the demagnetizing coil 1 and the DC rectifier 3 are electrically connected to form an electrical path. A pair of sliding grooves 41 are provided on the coil adjustment mechanism 4. The coil adjustment mechanism 4 is located between the demagnetizing coil 1 and the DC rectifier 3, and the wires of the demagnetizing coil 1 and the DC rectifier 3 are electrically connected in the sliding grooves 41 through a connector 42. The connector 42 is slidably set in the grooves of the sliding grooves 41 to form an adjustment mechanism that can control the length of the wire of the demagnetizing coil 1 protruding from the sliding grooves 41. In use, industrial AC power is converted into a certain voltage by voltage regulator 2, and then energized by DC rectifier 3 to directly power demagnetizing coil 1. This generates an electromagnetic field on demagnetizing coil 1, which interacts with the magnetic field at the end of the steel pipe, thereby eliminating the magnetism at the pipe end. To ensure greater compatibility of the coil diameter of demagnetizing coil 1 and allow it to fit more steel pipes of different diameters, coil adjustment mechanism 4 is used to adjust the diameter of demagnetizing coil 1. Specifically, the length of the wires in DC rectifier 3 and demagnetizing coil 1 is used as the increase in coil wire supply to increase the diameter of demagnetizing coil 1. In use, connector 42 is used to connect the wires of demagnetizing coil 1 and DC rectifier 3 to form a... The electrical path is constructed by placing the wire in the groove 41. The diameter of the demagnetizing coil 1 is adjusted by the length of the demagnetizing coil 1 protruding from the groove 41 at the end of the coil adjustment mechanism 4. The coil adjustment mechanism 4 serves as both an adjustment element and a fixing or supporting element for the demagnetizing coil 1. The connector 42 slides within the groove 41. When the connector 42 is close to one end of the demagnetizing coil 1 within the groove 41, the diameter of the demagnetizing coil 1 is at its maximum, and the length of the wire protruding from the groove 41 is at its maximum. When the connector slides to one end close to the DC rectifier 3, the connector 42 moves the wire of the demagnetizing coil 1 away from the exit position, and the distance of the demagnetizing coil 1 protruding from the end of the coil adjustment mechanism 4 is at its minimum, resulting in the smallest coil diameter.

[0021] like Figures 2 to 4As shown, the connector 42 includes a connector 421 capable of accommodating wires and partitions 422 disposed within the connector 421. The connector 421 is a pipe structure with closed sides and open ends. The partitions 422 are three layers deep and separately disposed within the connector 421, forming two layers of wire clamping space between adjacent partitions 422. The connector 421 of the connector 42 functions as an outer shell. The partitions 422 within the connector 421 form an electrical path by contacting the wires. Specifically, one wire of the demagnetizing coil 1 is clamped in one layer of the two clamping spaces, and one wire of the DC rectifier 3 is clamped in the other layer of the two clamping spaces. By pressing the three layers of partitions 422, the wires clamped in the clamping spaces are fixed and conductive, thus achieving the wiring function. The connector 421 is designed as a tubular structure that can surround the wire connection structure, forming an integral structure at the wiring position, making it easier to slide within the groove 41 and facilitating the adjustment of the diameter of the demagnetizing coil.

[0022] like Figure 2 As shown, the connector 421 is an arched pipe composed of an arc-shaped surface and a straight surface. A pair of threaded holes 423 are provided on the straight surface along the length of the pipe. A screw 424 is threadedly connected to the threaded holes 423. An opening is provided on the partition plate 422 at a position corresponding to the threaded holes 423. The screw 424 passes through the threaded holes 423 and through the opening of the partition plate 422. A locking block 425 is fixedly connected to the end, forming a fastening mechanism that can press the wire space by turning the screw 424. The arched connector 421 allows for easier sliding within the groove 41, facilitating adjustment of the demagnetizing coil size. The straight surface increases the contact area with the partition 422, enhancing the clamping effect. Specifically, during use, the wires at both ends are placed within the two-layer clamping space of the partition 422. The screw 424 is then turned, causing the locking block 425 to rise and approach the threaded hole 423 on the straight surface of the connector 421. During this process, the locking block 425, positioned at the end of the screw 424, causes the bottom partition 422 to rise, gradually bringing the three partitions 422 closer together to clamp the wires. The conductivity of the partition 422 then allows the wires at both ends to be electrically connected.

[0023] The bottom of the groove 41 is an arc-shaped structure that matches the arc-shaped surface of the connector 421, and the groove opening is constricted, providing a gap for the screw 424 to pass through. The screw 424 protrudes from the groove opening, forming a retaining groove for the connector 42 to slide within the groove 41. The matching shape of the groove 41 with the arc-shaped surface of the connector 421 further reduces friction between the connector 421 and the groove 41, making the wire exit and enter the demagnetizing coil 1 smoother. By setting the groove opening to be constricted, the connector wire can be held in place within the groove 41, ensuring that the diameter of the demagnetizing coil remains constant once determined, and preventing the connector 42 from dislodging from the groove 41 during use, thus preventing changes in the shape of the demagnetizing coil 1.

[0024] A clamping member 43 is provided at the opening of the slide groove 41. The clamping member 43 has a through hole with a thread. A screw 424 passes through the through hole and is threadedly connected to the threaded hole 423, forming a fixing mechanism in which the clamping member 43 can move along the screw 424 and can approach and clamp the straight surface of the connector 421 to the opening of the slide groove 41. By setting the clamping member 43 and providing a thread on the inner wall of the through hole on the clamping member 43, the direction of the thread can be the same as or opposite to the direction of the thread in the threaded hole 423. After the screw 424 is tightened to clamp the partition 422 and the wire in the connector 421, the position of the screw 424 remains fixed. Then, the clamping member 43 is tightened to move towards the opening of the slide groove 41 until the clamping member 43 is tightened and pressed against the opening, thus fixing the position of the connector 421 and keeping the shape and position of the demagnetizing coil 1 fixed, increasing the stability of the equipment during use.

[0025] The partition 422 in the middle layer has concave arc-shaped notches at both ends facing the demagnetizing coil 1 and the DC rectifier 3. In use, the ends of the wires of the demagnetizing coil 1 and the DC rectifier 3 are bent into a hook shape and hooked onto the arc-shaped notches on opposite sides of the partition 422, thereby fixing the position of the wire ends. This allows the wires at both ends to maintain their position even when not fixed by the screws 424, achieving a pre-fixing effect before tightening.

[0026] The connector 421 and screw 424 are made of insulating material, while the partition 422 is made of conductive material. The partition 422 can be made of copper, which has good conductivity. For safety reasons and to prevent dangerous situations such as electric shock or short circuits, the connector 421 and screw 424 can be made of insulating material that is not easily deformed, such as hard plastic.

[0027] A changeover switch 5, capable of adjusting the direction of the coil's magnetic field, is electrically connected between the DC rectifier 3 and the demagnetizing coil 1. Using the changeover switch 3, the magnetic field direction of the demagnetizing coil 1 can be adjusted according to the magnetic field direction at the end of the steel pipe, improving the applicability of the equipment. It should be noted that after using the changeover switch 3, the wire connected to the demagnetizing coil 1 within the connector 421 should be the same wire as that on the changeover switch 3 to ensure a correct electrical path.

[0028] It also includes a shaping ring 6, which is a semi-enclosed ring with a groove for embedding the wire of the demagnetizing coil 1, forming a structure that fixes the shape of the demagnetizing coil 1. When the demagnetizing coil 1 is compatible with multiple diameters, the shaping ring 6 is used to adjust the diameter and ensure a perfect circular shape. The shape of the shaping ring 6 is fixed, and the wire of the demagnetizing coil is embedded into the groove of the shaping ring 6, ensuring that the shape of the demagnetizing coil matches the shape of the steel pipe. By preparing multiple shaping rings 6 of different diameters or shapes, the compatibility of the demagnetizing coil 1 with steel pipes of different shapes and sizes can be improved.

[0029] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the embodiments of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all embodiments here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. An adjustable demagnetizing device for the end of a steel pipe, characterized in that: It includes a demagnetizing coil (1), a voltage regulator (2), a DC rectifier (3), and a coil adjustment mechanism (4). The voltage regulator (2) is connected to a power source, and the DC rectifier (3) is electrically connected to the voltage regulator (2). The wires of the demagnetizing coil (1) and the DC rectifier (3) are electrically connected to form an electrical path. A pair of sliding grooves (41) are provided on the coil adjustment mechanism (4). The coil adjustment mechanism (4) is located between the demagnetizing coil (1) and the DC rectifier (3). The wires of the demagnetizing coil (1) and the DC rectifier (3) are electrically connected in the sliding grooves (41) through a connector (42). The connector (42) is slidably located in the grooves (41) to form an adjustment mechanism that can control the length of the wire of the demagnetizing coil (1) exposed in the sliding grooves (41).

2. The adjustable steel pipe end demagnetizing device according to claim 1, characterized in that: The connector (42) includes a connector (421) capable of accommodating wires and a partition (422) disposed within the connector (421). The connector (421) is a pipe structure that is closed on the side and open at both ends. The partition (422) consists of three layers and is disposed separately within the connector (421), forming two layers of wire pressing space between adjacent partitions (422).

3. The adjustable steel pipe end demagnetizing device according to claim 2, characterized in that: The connector (421) is an arched pipe composed of an arc-shaped surface and a straight surface. A pair of threaded holes (423) are provided on the straight surface along the length of the pipe. A screw (424) is threadedly connected to the threaded hole (423). An opening is provided on the partition plate (422) at a position corresponding to the threaded hole (423). The screw (424) passes through the threaded hole (423) and the opening of the partition plate (422), and a locking block (425) is fixedly connected to its end, forming a fastening mechanism that can press the pressure wire space by turning the screw (424).

4. The adjustable steel pipe end demagnetizing device according to claim 3, characterized in that: The bottom of the groove (41) is an arc-shaped structure that matches the arc shape of the connector (421), and the groove opening is constricted, with a gap through which the screw (424) can pass. The screw (424) protrudes from the groove opening, forming a slot that limits the connector (42) to slide within the groove (41).

5. The adjustable steel pipe end demagnetizing device according to claim 4, characterized in that: The groove (41) is provided with a clamping member (43) at the groove opening. The clamping member (43) is provided with a through hole and a thread in the through hole. The screw (424) passes through the through hole and is threadedly connected to the threaded hole (423), forming a fixing mechanism in which the clamping member (43) can move along the screw (424) and can approach each other with the straight surface of the connector (421) to clamp the groove opening of the groove (41).

6. The adjustable steel pipe end demagnetizing device according to claim 2, characterized in that: The partition (422) located in the middle layer has concave arc-shaped notches at both ends of the demagnetizing coil (1) and the DC rectifier (3).

7. The adjustable steel pipe end demagnetizing device according to claim 3, characterized in that: The connector (421) and screw (424) are made of insulating material, and the partition (422) is made of conductive material.

8. The adjustable steel pipe end demagnetizing device according to claim 1, characterized in that: The DC rectifier (3) and the demagnetizing coil (1) are also electrically connected by a changeover switch (5) that can adjust the direction of the coil's magnetic field.

9. The adjustable steel pipe end demagnetizing device according to claim 1, characterized in that: It also includes a shaping ring (6), which is a semi-enclosed ring and has a groove on the shaping ring (6) that can be used to embed the wire of the demagnetizing coil (1), forming a shape-fixing structure for the demagnetizing coil (1).

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