Butt joint auxiliary member for outlet device equalizing pipe and butt joint method

Abstract

The application relates to a butt joint auxiliary piece for a voltage equalizing pipe of an outlet device and a butt joint method. The butt joint auxiliary piece comprises a plate-shaped body, wherein an arc-shaped notch and an arc-shaped convex part are arranged on the body. The arc-shaped notch is recessed from a lower wall surface of the body to the inside of the body, penetrates the body in the thickness direction of the body, and is circular-arc-shaped in the cross section. The central angle of the arc-shaped notch is not greater than 180 degrees. The arc-shaped convex part extends perpendicularly from a side wall surface of the body to the outside, is part of a cylinder, is part of a circular ring in the cross section, and the central axes of the arc-shaped notch and the arc-shaped convex part are collinear. The body has a blocking part outside the arc-shaped convex part. The application creatively provides the simple butt joint auxiliary piece, improves the alignment accuracy of left and right voltage equalizing pipes in the installation process through the butt joint auxiliary piece, protects the parts of the outlet device, reduces the cost, and greatly improves the installation convenience and efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, in particular to a butt joint auxiliary piece and butt joint method for a voltage equalizing tube of an outgoing line device. BACKGROUND

[0002] The outgoing line device is an insulation device for the outgoing line end of a transformer, which serves to improve the electric field distribution in the bushing oil, so as to make the electric field uniform, reduce the partial discharge, and ensure reliable electrical performance. The outgoing line device on the grid side of a converter transformer is usually divided into two parts and installed in two left and right raised seat iron cylinders respectively, and each of the two raised seat iron cylinders has a voltage equalizing tube. A plurality of cylindrical structures are arranged outside the two voltage equalizing tubes. The butt joint of the two voltage equalizing tubes is completed by moving the two raised seat iron cylinders towards each other. During the butt joint, the tube walls of the two voltage equalizing tubes need to be nested together, and the cylindrical structures outside the voltage equalizing tubes also need to be nested together. Due to the large size of the raised seat iron cylinder and the voltage equalizing tube, and the structure and installation of the raised seat iron cylinder and the voltage equalizing tube, the center axes of the voltage equalizing tube and the cylindrical structure are not very accurate, i.e., the center axes are deviated and not on the same straight line. During the installation process, the installation personnel usually directly and blindly butt joint the voltage equalizing tubes according to experience. The left and right voltage equalizing tubes and the cylindrical structures often collide with each other, and the voltage equalizing tubes and the cylindrical structures are often damaged, which increases the cost. Moreover, the workers need to constantly adjust the positions of the voltage equalizing tubes and try to butt joint them during the installation, which is time-consuming and laborious and has low efficiency. SUMMARY

[0003] In order to solve the above problems, the present application provides a butt joint auxiliary piece and butt joint method for a voltage equalizing tube of an outgoing line device, so as to improve the accurate positioning of the left and right voltage equalizing tubes by means of the butt joint auxiliary piece during the installation process, thereby reducing the collision of parts, improving the installation convenience and efficiency.

[0004] In order to achieve the above purpose, the present application provides a butt joint auxiliary piece for a voltage equalizing tube of an outgoing line device, characterized in that the butt joint auxiliary piece comprises a plate-shaped body, an arc-shaped notch and an arc-shaped protruding part are arranged on the body, the arc-shaped notch is recessed from the lower wall of the body to the inside of the body and penetrates the body in the thickness direction of the body, and the cross section of the arc-shaped notch is arc-shaped, the central angle of the arc-shaped notch is not greater than 180 degrees, the arc-shaped protruding part extends perpendicularly outward from the side wall of the body and is part of a cylinder, the cross section of the arc-shaped protruding part is part of a circular ring, the central axes of the arc-shaped notch and the arc-shaped protruding part are collinear, and the body has a blocking part outside the arc-shaped protruding part.

[0005] The present application also provides a butt joint method using the above-mentioned butt joint auxiliary piece for a voltage equalizing tube of an outgoing line device, characterized by the following steps:

[0006] Step one: connecting the wires of the left voltage equalizing tube and the right voltage equalizing tube;

[0007] Step two: install one of the butt joint auxiliary parts on the end of the left lifting seat iron cylinder and the right lifting seat iron cylinder, make the circular arc notch of the butt joint auxiliary part clamped on the outer wall surface of the left or right equalizing pipe, the circular arc convex part clamped on the inner wall surface of the left or right lifting seat iron cylinder, and the blocking part abutting on the end surface of the left or right lifting seat iron cylinder:

[0008] Step three: move the left lifting seat iron cylinder and the right lifting seat iron cylinder towards each other, and insert one of the left and right equalizing pipes into the other, until the distance for dismounting the butt joint auxiliary part is left between the two butt joint auxiliary parts;

[0009] Step four: dismount the butt joint auxiliary part from the left lifting seat iron cylinder and the right lifting seat iron cylinder;

[0010] Step five: move the left lifting seat iron cylinder and the right lifting seat iron cylinder towards each other until the ends of the left and right lifting seat iron cylinders abut together.

[0011] The application creatively proposes the butt joint auxiliary part with simple structure, which improves the alignment accuracy of the left and right equalizing pipes during installation, avoids the collision and damage of the left and right equalizing pipes and other cylindrical structures during installation, protects the parts of the outlet device, reduces the cost, and completes the installation and butt joint work once, greatly improves the installation convenience and efficiency, and then removes the butt joint auxiliary part without any influence on the structure of the outlet device. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural diagram of the butt joint auxiliary part of the equalizing pipe of the outlet device;

[0013] Figure 2 It is a front view of the butt joint auxiliary part in Figure 1

[0014] Figure 3 It is a left view of the butt joint auxiliary part in Figure 1

[0015] Figure 4 It is a state diagram of the butt joint auxiliary part installed on the left lifting seat iron cylinder;

[0016] Figure 5 It is a state diagram of the butt joint auxiliary part installed on the right lifting seat iron cylinder.

[0017] The application will be further described in detail below with reference to the drawings. DETAILED DESCRIPTION

[0018] Referring to Figures 1 to 3 ​​The butt joint auxiliary part of the outlet device equalizing tube comprises a body 1, which is plate-shaped and has a semicircular cross section. The body 1 is provided with a circular-arc notch 2 and a circular-arc protruding part 3. The circular-arc notch 2 is recessed inward from the lower wall of the body 1, penetrates the body in the thickness direction of the body 1, has a circular-arc cross section, and has a center axis that is a straight line perpendicular to the paper surface and passing through point O, and the included angle between the two end points of the circular-arc cross section and the center axis is the central angle A of the circular-arc notch 2. The butt joint auxiliary part only plays an auxiliary role in the installation process of the outlet device equalizing tube, and needs to be removed after the auxiliary function is completed. In order to facilitate the removal, the central angle A of the circular-arc notch 2 is not greater than 180 degrees. The circular-arc protruding part 3 extends outward perpendicularly from the front wall of the body 1, is part of a cylinder, has a circular-ring cross section, and has a center axis that is a straight line perpendicular to the paper surface and passing through point O, and the center axes of the circular-arc notch 2 and the circular-arc protruding part 3 are collinear. The front wall of the body 1 is the face of the body 1 facing the reader, and is one of the largest planes of the body 1. The body 1 has a blocking part 4 outside the circular-arc protruding part 3, and the circular-arc notch 2 is inside the circular-arc protruding part 3, and the circular-arc notch 2 and the blocking part 4 are respectively on the inner and outer sides of the circular-arc protruding part 3. Figure 2 Figure 2 Figure 2

[0019] The body 1 is provided with three mounting holes 11 that penetrate in the thickness direction thereof, and fingers can be inserted into the mounting holes 11 when the butt joint auxiliary part is mounted or dismounted, which is very convenient for the installer to grasp the butt joint auxiliary part and to apply force, so that the mounting and dismounting are very convenient and labor-saving. The body 1 is provided with two lug parts 5 that protrude outward from the outer edge of the body 1 along the radial direction of the circular-arc notch 2 and are outside the circular-arc protruding part 3 and the blocking part 4. After the butt joint auxiliary part is mounted to the raised seat iron cylinder (see Figure 4 and Figure 5 ), the lug parts 5 are outside the raised seat iron cylinder, which is very convenient for applying force to the butt joint auxiliary part from the outside of the raised seat iron cylinder when the butt joint auxiliary part is dismounted, so that the dismounting is more convenient and labor-saving.

[0020] See Figure 4 and Figure 5 , the butt joint method of the butt joint auxiliary part of the outlet device equalizing tube comprises the following steps.

[0021] ​​​Step one: connect the wires of left and right equalizing pipes 71 and 72. Since the wire of right equalizing pipe 72 is deeply buried inside the right equalizing pipe 72, before connecting the wire, first install the conductive lead-out connecting rod 8 on the right equalizing pipe 72, one end of which is connected to the wire of the right equalizing pipe 72, and the other end extends out of the end of the right equalizing pipe 72. In this way, when connecting the wires of left and right equalizing pipes 71 and 72, only the lead-out connecting rod 8 and the wire of the left equalizing pipe 71 need to be connected, making the equalizing pipe wiring simpler and faster.

[0022] Step two: install one butt joint auxiliary on the end of each of the left and right lifting seat iron cylinders 61 and 62, so that the circular arc notch 2 of the butt joint auxiliary is clamped on the outer wall surface of the left or right equalizing pipe 71 or 72, the circular arc protruding part 3 is clamped on the inner wall surface of the left or right lifting seat iron cylinder 61 or 62, and the blocking part 4 is abutted on the end surface of the left or right lifting seat iron cylinder 61 or 62. The butt joint auxiliary can be directly clamped on, and the butt joint auxiliary is firmly connected with the left or right lifting seat iron cylinder 61 or 62, without the need for glue or screw fixing, and the installation and removal are very simple. Since the center axes of the circular arc notch 2 and the circular arc protruding part 3 are collinear, after the installation of the butt joint auxiliary is completed, the left lifting seat iron cylinder 61 and the left equalizing pipe 71, and the right lifting seat iron cylinder 62 and the right equalizing pipe 72 can be automatically centered, that is, the center axes of the left lifting seat iron cylinder 61 and the left equalizing pipe 71, and the center axes of the right lifting seat iron cylinder 62 and the right equalizing pipe 72 are collinear.

[0023] Step three: adjust the positions of the left and right lifting seat iron cylinders 61 and 62, so that the left and right equalizing pipes 71 and 72 are close to each other and are aligned, and the left and right lifting seat iron cylinders 61 and 62 are moved towards each other, so that one of the left and right equalizing pipes 71 and 72 is inserted into the other, until a gap distance for removing the butt joint auxiliaries is left between the two butt joint auxiliaries. Since the butt joint auxiliaries have made the center axes of the left lifting seat iron cylinder 61 and the left equalizing pipe 71 collinear, and the center axes of the right lifting seat iron cylinder 62 and the right equalizing pipe 72 collinear, the left and right equalizing pipes 71 and 72 can be quickly and accurately aligned, and no collision occurs between the two during the mutual insertion movement, nor does any collision occur between other cylindrical structures outside the equalizing pipes, so that no damage is caused to the equalizing pipes and other structures.

[0024] Step four: remove the butt joint auxiliaries from the left and right lifting seat iron cylinders 61 and 62, put your fingers into the installation hole 11, and hold the body 1 with your hand, then force it outwards from the end of the left or right lifting seat iron cylinder 61 or 62, and at the same time, push the lug part 5 with your hand to separate the butt joint auxiliary from the left or right lifting seat iron cylinder 61 or 62, and then take the butt joint auxiliary out of the gap between the left and right lifting seat iron cylinders 61 and 62.

[0025] Step five: further make the left and right lifting seat iron cylinder 61 and 62 opposite to each other, until the end of the left and right lifting seat iron cylinder 61 and 62 abut together, and then connect them with screws.

[0026] The application creatively proposes a simple structure of the butt joint auxiliary part, which improves the alignment accuracy of the left and right equalizing pipes by the butt joint auxiliary part during the installation process, avoids the collision and damage of the left and right equalizing pipes and other cylindrical structures during the installation process, protects the parts of the outlet device, reduces the cost, and the installation and butt joint work can be completed once, which greatly improves the installation convenience and efficiency, and then the butt joint auxiliary part is removed, which does not affect the structure of the outlet device.

Claims

1. A method of mating a mating aid of an outlet device equalizing tube, characterized in that, The butt joint auxiliary piece of the outlet device equalizing pipe comprises a plate-shaped body, wherein an arc notch and an arc protruding part are arranged on the body, the arc notch is recessed from the lower wall of the body to the inside of the body, penetrates the body in the thickness direction of the body, and has a circular arc shape in the cross section, the central angle of the arc notch is not greater than 180 degrees, the arc protruding part extends perpendicularly from the side wall of the body to the outside, is a part of a cylinder, has a circular ring shape in the cross section, the central axes of the arc notch and the arc protruding part are collinear, and the body has a blocking part outside the arc protruding part; the butt joint method comprises the following steps: Step one: connecting the wires of the left equalizing pipe and the right equalizing pipe; Step two: installing one butt joint auxiliary piece on the end of the left lifting seat iron cylinder and the right lifting seat iron cylinder, so that the arc notch of the butt joint auxiliary piece is clamped on the outer wall of the left equalizing pipe or the right equalizing pipe, the arc protruding part is clamped on the inner wall of the left lifting seat iron cylinder or the right lifting seat iron cylinder, and the blocking part is abutted on the end surface of the left lifting seat iron cylinder or the right lifting seat iron cylinder; Step three: moving the left lifting seat iron cylinder and the right lifting seat iron cylinder towards each other, so that one of the left equalizing pipe and the right equalizing pipe is inserted into the other, until a distance for disassembling the butt joint auxiliary pieces is left between the two butt joint auxiliary pieces; Step four: disassembling the butt joint auxiliary pieces from the left lifting seat iron cylinder and the right lifting seat iron cylinder; Step five: moving the left lifting seat iron cylinder and the right lifting seat iron cylinder towards each other until the ends of the left lifting seat iron cylinder and the right lifting seat iron cylinder are abutted together.

2. The method of claim 1, wherein, The body is provided with a mounting hole penetrating in the thickness direction thereof.

3. The method of docking the docking aid of the outlet device equalizing tube according to claim 2, characterized in that, The body is provided with a lug part outside the arc protruding part.

4. The method of docking the docking aid of the outlet device equalizing tube according to claim 3, characterized in that, In the step one, the electrically conductive lead-out connecting rod is first installed on the right equalizing pipe, one end of the lead-out connecting rod is connected with the wire of the right equalizing pipe, the other end of the lead-out connecting rod extends out of the end of the right equalizing pipe, and then the lead-out connecting rod and the wire of the left equalizing pipe are connected.

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