Tubular built-in oil discharge wrench

Abstract

A tubular built-in oil discharge wrench comprises a pipe body, a butt joint part is arranged at one end of the pipe body, an oil discharge pipe is arranged on the outer wall of the end, close to the butt joint part, of the pipe body, a rotating rod is installed in the pipe body and extends out of the other end of the pipe body in a rotating and sealing mode, a wrench part is arranged at the end, located on the butt joint part, of the rotating rod, and a screwing part is arranged at the other end of the rotating rod. After the butt joint part is connected with the oil discharge outlet, the wrench part of the rotating rod in the pipe body is connected with the embedded plug in a matched mode, the embedded plug is disassembled by rotating the screwing part, after the embedded plug is disassembled, the embedded plug and the rotating rod move backwards under the pressure of oil, and when the embedded plug moves to the rear portion of the oil discharge pipe, oil is discharged from the oil discharge pipe. The oil discharge pipe can be directly connected with an oil drum or an oil pump, the whole process cannot pollute hands and sleeves of an operator, and oil cannot splash and flow to the ground along the outer wall of the transformer.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer maintenance tools, in particular to a tubular built-in oil drain wrench. Background Art

[0002] See also Figure 6 The bottom oil drain port of some transformers 30 is blocked and sealed by an embedded plug 10. The outer circumference of the embedded plug 10 has an external thread, and one end is provided with a hexagonal blind hole or an external hexagonal boss. The hexagonal blind hole or the external hexagonal boss is used to screw during installation and removal. The embedded plug 10 is only removed when the transformer 30 needs to drain oil. When the embedded plug 10 is removed from the oil drain port, a large amount of transformer oil will gush out. First, the operator will not be able to avoid it in time, causing pollution to the hands and sleeves. Second, the gushing oil can only be caught by the oil receiving pan and then pumped into the oil barrel for collection. In this process, oil will splash out of the oil receiving pan, and oil will flow to the ground along the outer wall of the transformer 30, which not only pollutes the ground, but also causes a waste of transformer oil. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a tubular built-in oil drain wrench. After the docking part is connected to the oil drain port, the wrench part of the rotating rod inside the tube body is matched with the embedded plug and connected. The embedded plug is removed by rotating the twisting part. After the embedded plug is removed, the embedded plug and the rotating rod move backward under the pressure of the oil. When the embedded plug moves to the rear of the oil drain pipe, the oil is discharged from the oil drain pipe. The oil drain pipe can be directly connected to an oil barrel or an oil pump. The whole process will not cause pollution to the hands and sleeves of the operator, and will not cause the oil to splash and flow to the ground along the outer wall of the transformer.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a tubular built-in oil drain wrench, comprising a tube body, a docking portion is provided at one end of the tube body, an oil drain pipe is provided on the outer wall of the tube body at one end close to the docking portion, a rotating rod is installed inside the tube body, the rotating rod extends out from the other end of the tube body in a rotating seal, a wrench portion is provided at one end of the rotating rod located at the docking portion, and a twisting portion is provided at the other end.

[0005] The butt joint is a flange.

[0006] The docking portion is a part of the quick connector.

[0007] The inner hole at the other end of the tube body is provided with a sealing groove, and a sealing ring is installed in the sealing groove.

[0008] A sealing plug is installed at the other end of the tube body, one end of the sealing plug is arranged with a threaded section, the sealing plug is screwed and sealed with the tube body through the threaded section, the inner hole of the sealing plug is arranged with the sealing groove, and the rotating rod passes through the inner hole of the sealing plug.

[0009] A support is provided in the pipe body at a side of the oil drain pipe away from the docking portion, and the rotating rod movably passes through the support.

[0010] A joint is installed on the oil drain pipe.

[0011] The wrench part is a polygonal column, or a column with an inner polygonal hole.

[0012] The twisting portion is a polygonal column.

[0013] The twisting portion is radially provided with a through hole.

[0014] The utility model has the following beneficial effects:

[0015] 1. After the docking part of the utility model is connected with the oil drain port, the wrench part of the rotating rod inside the pipe body is matched with the embedded plug and the embedded plug is disassembled by rotating the twisting part. After the embedded plug is disassembled, the embedded plug and the rotating rod move backward under the pressure of the oil. When the embedded plug moves to the rear of the oil drain pipe, the oil is discharged from the oil drain pipe. The oil drain pipe can be directly connected to an oil barrel or an oil pump. The whole process will not cause pollution to the hands and sleeves of the operator, and will not cause the oil to splash and flow to the ground along the outer wall of the transformer.

[0016] 2. A support is provided in the pipe body of the utility model on the side of the oil drain pipe away from the docking portion, and the rotating rod movably passes through the support, thereby improving the stability of the rotating rod, and the wrench part can be more accurately aligned with the embedded plug.

[0017] 3. After the oil is drained, the utility model pushes the rotating rod inward to make the built-in plug abut against the oil drain port of the transformer, and then rotates the rotating rod to reinstall the built-in plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the structure of the utility model from top view.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model.

[0022] Figure 4 for Figure 2 Schematic diagram of the AA section structure.

[0023] Figure 5 for Figure 2 The middle AA section is a schematic diagram of the structure when the embedded plug is removed to drain the oil.

[0024] Figure 6 This is a state diagram used in the present utility model.

[0025] In the figure: pipe body 1, docking part 2, sealing plug 3, threaded section 31, sealing groove 32, sealing ring 33, oil drain pipe 4, joint 41, rotating rod 5, wrench part 51, twisting part 52, through hole 53, support member 6, twisting tool 7;

[0026] Embedded plug 10 , connecting part 20 , transformer 30 . DETAILED DESCRIPTION

[0027] like Figure 1-6 As shown, a tubular built-in oil drain wrench comprises a tubular body 1, wherein a docking portion 2 is provided at one end of the tubular body 1, an oil drain pipe 4 is provided on the outer wall of the end of the tubular body 1 close to the docking portion 2, a rotating rod 5 is installed inside the tubular body 1, the rotating rod 5 extends out from the other end of the tubular body 1 in a rotatable and sealed manner, a wrench portion 51 is provided at one end of the rotating rod 5 located at the docking portion 2, and a twisting portion 52 is provided at the other end. After the docking portion 2 is connected to the oil drain port, the wrench portion 51 of the rotating rod 5 inside the pipe body 1 is cooperated with the embedded plug 10 to be connected. The embedded plug 10 is removed by rotating the twisting portion 52. After the embedded plug 10 is removed, the embedded plug 10 and the rotating rod 5 move backward under the pressure of the oil. When the embedded plug 10 moves to the rear of the oil drain pipe 4, the oil is discharged from the oil drain pipe 4. The oil drain pipe 4 can be directly connected to an oil barrel or an oil pump. The whole process will not cause pollution to the hands and sleeves of the operator, nor will it cause the oil to splash and flow to the ground along the outer wall of the transformer.

[0028] In one implementation, see Figure 3 , the docking part 2 is a flange. When the docking part 2 is a flange, the oil drain port of the transformer 30 needs to be installed with the connecting part 20 that cooperates with the docking part 2. In this embodiment, the connecting part 20 is a flange with internal threads. When in use, the docking part 2 is connected to the connecting part 20 by bolts. Specifically, when the docking part 2 is a flange, an annular rubber pad needs to be installed between the two flanges during installation to ensure sealing.

[0029] In another embodiment, the docking portion 2 is a part of the quick connector. When the docking portion 2 is a part of the quick connector, the connecting portion 20 on the oil drain port of the transformer 30 is another part of the quick connector. When in use, the docking portion 2 and the connecting portion 20 are installed and connected through a matching clamp.

[0030] In order to make the rotating rod 5 and the tube body 1 rotatably sealed, see Figure 4The inner hole at the other end of the tube body 1 is provided with a sealing groove 32 , and a sealing ring 33 is installed in the sealing groove 32 .

[0031] Furthermore, a sealing plug 3 is installed at the other end of the tube body 1. One end of the sealing plug 3 is provided with a threaded section 31. The sealing plug 3 is screwed and sealed with the tube body 1 through the threaded section 31. The inner hole of the sealing plug 3 is provided with the sealing groove 32, and the rotating rod 5 passes through the inner hole of the sealing plug 3.

[0032] The tube body 1 can be a straight tube or a Figure 4 The structure shown has a straight tube at one end and a tapered tube at the other end.

[0033] Since the rotating rod 5 is supported by the sealing plug 3 at only one end of the tube body 1, the end of the rotating rod 5 located at the wrench portion 51 will shake, making it difficult to align the wrench portion 51 with the embedded plug 10. Figure 4 , 5 A support member 6 is provided inside the pipe body 1 at a side of the oil drain pipe 4 away from the docking portion 2 , and the rotating rod 5 moves through the support member 6 , thereby improving the stability of the rotating rod 5 .

[0034] For further information, see Figure 1 , 3 A joint 41 is installed on the oil discharge pipe 4 to facilitate connection with the oil pipe. Preferably, the joint 41 can be a block joint.

[0035] According to the structure of the embedded plug 10, when the end of the embedded plug 10 is a hexagonal blind hole, the wrench part 51 is a hexagonal column; when the end of the embedded plug 10 is an external hexagonal boss, the wrench part 51 is a column with an inner polygonal hole.

[0036] Furthermore, the twisting portion 52 is a polygonal column. Specifically, the twisting portion 52 is a quadrilateral or hexagonal column.

[0037] Furthermore, a through hole 53 is radially provided on the screwing portion 52, so that the screwing tool 7 with a rod can be connected and rotated on site. When in use, the screwing tool 7 is inserted into the through hole 53.

[0038] The use process or principle of the utility model is as follows:

[0039] See also Figure 4 , 6 , install the oil drain wrench of the present application to the connecting part 20 at the oil drain port of the transformer 30 through the docking part 2, and then connect the oil pipe and the oil drain pipe 4.

[0040] Push the rotating rod 5 inwards to make the wrench portion 51 of the rotating rod 5 abut against the embedded plug 10 , and then rotate the rotating rod 5 left and right to adjust the angle so that the wrench portion 51 is inserted into the blind hole or boss of the embedded plug 10 .

[0041] The screwing part 52 is rotated by a wrench or a screwing tool 7, and the rotating rod 5 is rotated to remove the embedded plug 10.

[0042] After the embedded plug 10 is removed, since the outer diameter of the embedded plug 10 is slightly smaller than the inner diameter of the pipe body 1, the embedded plug 10 and the rotating rod 5 move backward under the pressure of the oil. When the embedded plug 10 moves to the rear of the oil drain pipe 4, Figure 5 The oil is discharged from the oil drain pipe 4. The whole process will not pollute the hands and sleeves of the operators, nor will the oil splash and flow to the ground along the outer wall of the transformer.

[0043] After the oil is drained, the rotating rod 5 is pushed inward to make the embedded plug 10 abut against the oil drain port of the transformer 30, and then the rotating rod 5 is rotated to reinstall the embedded plug 10.

Claims

1. A tubular built-in oil drain wrench, characterized in that: The invention comprises a tube body (1), wherein one end of the tube body (1) is provided with a docking portion (2), an oil drain pipe (4) is provided on the outer wall of the tube body (1) at one end close to the docking portion (2), a rotating rod (5) is installed inside the tube body (1), the rotating rod (5) extends out from the other end of the tube body (1) in a rotatable manner, and a wrench portion (51) is provided at one end of the rotating rod (5) located at the docking portion (2), and a twisting portion (52) is provided at the other end.

2. The tubular built-in oil drain wrench according to claim 1, characterized in that: The docking portion (2) is a flange.

3. The tubular built-in oil drain wrench according to claim 1, characterized in that: The docking portion (2) is a part of the quick-release connector.

4. The tubular built-in oil drain wrench according to claim 1, characterized in that: The inner hole at the other end of the tube body (1) is provided with a sealing groove (32), and a sealing ring (33) is installed in the sealing groove (32).

5. The tubular built-in oil drain wrench according to claim 4, characterized in that: A sealing plug (3) is installed at the other end of the tube body (1), one end of the sealing plug (3) is provided with a threaded section (31), the sealing plug (3) is screwed and sealed with the tube body (1) via the threaded section (31), the inner hole of the sealing plug (3) is provided with the sealing groove (32), and the rotating rod (5) passes through the inner hole of the sealing plug (3).

6. The tubular internal oil drain wrench according to claim 1, characterized in that: A support member (6) is provided inside the pipe body (1) on a side of the oil drain pipe (4) away from the docking portion (2), and the rotating rod (5) movably passes through the support member (6).

7. The tubular internal oil drain wrench according to claim 1, characterized in that: A joint (41) is installed on the oil drain pipe (4).

8. The tubular internal oil drain wrench according to claim 1, characterized in that: The wrench portion (51) is a polygonal column, or a column with an inner polygonal hole.

9. The tubular internal oil drain wrench according to claim 1, characterized in that: The twisting portion (52) is a polygonal column.

10. The tubular internal oil drain wrench according to claim 9, characterized in that: The twisting portion (52) is provided with a through hole (53) in the radial direction.

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