A detachable sealed pole for voltage transformer

Abstract

The present invention relates to a detachable sealed pole for a voltage transformer, comprising an assembly-type box seat, a connecting seat being provided at the lower portion of the assembly-type box seat; and a box door being hingedly installed at the upper front portion of the assembly-type box seat. A rotating handle is rotatably connected to the assembly-type box seat, and the rotating handle is equipped with a cape assembly, and the cape assembly is provided with a transmission rod; a side extension frame is installed on the right portion of the assembly-type box seat, and a middle link is installed on the side extension frame through a bearing, and a distribution frame is connected to the lower end of the middle link, and a sealed pole body is installed on the distribution frame, and a round roller is installed on the upper end of the middle link. The present invention can control the T-shaped connecting column to automatically lift and slide back and forth, thereby releasing the fixed state of the sealed pole in use and realizing automatic preliminary disassembly. The present invention can control all the sealed pole bodies to rotate at a constant angle, so as to achieve the effect of completing disassembly and facilitating replacement and loading of new sealed poles.

Description

Technical Field

[0001] The present invention relates to the field related to mutual inductors, in particular to a detachable sealed pole for a voltage mutual inductor. Background Art

[0002] A sealed pole is a standalone component mounted on the upper end of a transformer's metal casing, encapsulating the vacuum interrupter, or the vacuum interrupter, conductive connections, and / or terminals with solid insulating material. However, most sealed poles are used outdoors in harsh environments, making them susceptible to damage and requiring specialized removal and replacement.

[0003] The Chinese invention patent application number 201210401697.4 discloses a detachable solid-sealed pole and its manufacturing method. The invention is detachable, making it possible to replace parts, greatly improving the utilization rate of parts, and helping enterprises to reduce production costs and improve economic benefits. No expensive special equipment and auxiliary tooling are required for assembly, the process is simple, the complexity coefficient is low, and the production efficiency is high. But specifically, how to disassemble, what methods to use for disassembly and the related steps and methods for replacement are not disclosed in the technical solution, and no similar methods have been found in traditional technologies. Therefore, there is an urgent need for a device or method for disassembling and replacing solid-sealed poles to solve the problem of handling when the solid-sealed poles are damaged. Summary of the Invention

[0004] In order to meet the above-mentioned demand for disassembly and replacement of the sealed pole, the present invention proposes a detachable sealed pole for a voltage transformer.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0006] A removable sealed pole for a voltage transformer comprises an assembly housing with a connecting base at its lower portion and a door hingedly mounted on the upper front portion. The right end of the assembly housing is open. The connecting base has threaded holes through which the assembly housing can be mounted to the metal casing of the transformer. The door facilitates manual inspection of the internal equipment of the assembly housing.

[0007] As a further improvement of the present invention, a rotary handle is rotatably connected to the assembly-type box seat, and the rotary handle can be conveniently rotated by hand. The rotary handle is equipped with a cape assembly, which is provided with a transmission rod. A side extension frame is installed on the right side of the assembly-type box seat, and a middle link is installed on the side extension frame through a bearing. The lower end of the middle link is connected to a distribution frame, and the distribution frame is installed with a sealed pole body, and a round roller is installed on the upper end of the middle link. The cape assembly can control the round roller to rotate at a constant angle, thereby achieving the purpose of replacing the sealed pole. The middle link, the round roller and all the sealed pole bodies can rotate synchronously.

[0008] As a further improvement of the present invention, the rotary handle is L-shaped for easier operation. The cape assembly also includes a thick cover plate mounted within the assembly housing and a drive turret connected to the rotary handle. The rotary handle and the thick cover plate are connected via a bearing. The front portion of the rotary handle passes through the middle of the thick cover plate.

[0009] As a further improvement to the present invention, an extension is provided at the left end of the drive rod; a central slot is provided on the drive turret for the extension's center portion to pass through, and a rectangular slot is provided on the thick cover plate for the sliding installation of the extension's rear end. The extension has a square cross-section. Manual rotation of the rotary handle causes the drive rod to slide along the path of the rectangular slot. The height of the rectangular slot can be set to 2 to 2.5 times the height of the roller.

[0010] As a further improvement of the present invention, the circular arc surface of the circular roller is evenly distributed with four inclined grooves adapted to the driving rod. When the driving rod is lifted and slid, its right end can pass through the inclined grooves, thereby driving the circular roller to rotate at a rated angle.

[0011] As a further improvement to the present invention, the central angle of each inclined groove is 90 degrees. That is, in each pair of adjacent inclined grooves, the upper end of one groove and the lower end of the other groove are located on the same vertical line. Each inclined groove is connected to the upper and lower ends of the roller. This structure is necessary to ensure that the drive rod can continuously cooperate with the inclined groove to control the rotation of the roller.

[0012] As a further improvement of the present invention, four sealed pole bodies are provided and distributed in a ring-shaped manner on the distribution frame. In principle, the number of sealed pole bodies is equal to the number of inclined slots.

[0013] As a further improvement to the present invention, each sealed pole body is provided with two upper connection holes at its lower end. The transformer's metal housing is also provided with two corresponding lower connection holes. By rotating the sealed pole body, the two upper connection holes align with the two lower connection holes on the transformer's metal housing, facilitating subsequent mounting and fixing.

[0014] As a further improvement of the present invention, a U-shaped hanger is installed inside the assembly-type box base, on which a motor and a horizontal guide rod are mounted; the motor is connected to a threaded screw, which is mounted on the U-shaped hanger via a bearing; the threaded screw is coupled to an L-shaped hanger that is slidably connected to the horizontal guide rod. That is, under the action of the screw nut, the L-shaped hanger can slide in the front-to-back direction.

[0015] As a further improvement of the present invention, a hydraulic cylinder and a longitudinal guide rod are respectively mounted on the L-shaped hanger; the hydraulic cylinder is connected to a U-shaped piece that is slidably connected to the longitudinal guide rod. That is, the U-shaped piece can be raised and lowered under the drive of the hydraulic cylinder.

[0016] As a further improvement to the present invention, the front portion of the U-shaped piece is provided with two bayonet holes, each of which is secured with a T-shaped connecting post that fits within the upper connecting hole. The T-shaped connecting post can be inserted into the upper connecting hole and the lower connecting hole of the transformer, thereby enabling installation of the sealed pole. However, the aforementioned control of the raising and lowering, as well as the forward and backward movement of the T-shaped connecting post, is intended to facilitate replacement of the sealed pole. The sealed pole body on the right side is the one currently in operation.

[0017] The present invention has the following beneficial effects: it can automatically control the T-shaped connecting post to rise and fall, as well as slide forward and backward, thereby releasing the fixed state of the used solid-sealed pole and achieving automatic preliminary disassembly. By controlling the fixed-sealed pole body to rotate at a constant angle, the disassembly is completed and the replacement and loading of new solid-sealed poles are facilitated. Moreover, the entire operation process is relatively labor-saving and manual control is relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 It is a perspective view of the present invention;

[0020] Figure 2 This is a three-dimensional diagram of the present invention after removing the assembly box seat, connecting seat and box door Figure 1 ;

[0021] Figure 3 yes Figure 2 A local enlarged view of location I;

[0022] Figure 4 This is a three-dimensional diagram of the present invention after removing the assembly box seat, connecting seat and box door Figure 2 ;

[0023] Figure 5 yes Figure 4 A partial enlarged view of location II;

[0024] Figure 6 It is a structural diagram of the U-shaped piece;

[0025] Figure 7 It is a structural diagram of a T-shaped connecting column.

[0026] In the figure: 1. Assembly type box seat; 1a. Connecting seat; 2. Rotating handle; 3. Transmission rod; 3a. Extension part; 4. Extension frame; 5. Middle connecting rod; 6. Solid-sealed pole body; 6a. Upper connecting hole; 7. Round roller; 7a. Inclined groove; 8. Thick cover plate; 8a. Rectangular groove; 9. Driving rotating frame; 9a. Middle through groove; 10. Box door; 11. U-shaped hanger; 12. Motor; 13. Threaded screw; 14. L-shaped hanger; 15. Hydraulic cylinder; 16. Vertical guide rod; 17. U-shaped piece; 17a. Bayonet; 18. T-shaped connecting column; 19. Distribution frame; 20. Horizontal guide rod. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be explained more clearly and completely below in conjunction with the drawings in the embodiments. Of course, the described embodiments are only a part of the present invention, not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0028] like Figure 1 As shown, a detachable sealed pole for a voltage transformer is provided with an assembly housing 1, with a connecting base 1a at its lower portion. A door 10 is hingedly mounted on the upper front portion of the assembly housing 1. The right end of the assembly housing 1 is open. Connecting base 1a has threaded holes through which the assembly housing 1 can be mounted to the metal casing of the transformer. The door 10 facilitates manual access to the internal equipment of the assembly housing 1.

[0029] like Figure 2 and Figure 4 As shown, a rotary handle 2 is rotatably connected to the assembled box base 1, which can be easily rotated by hand. The rotary handle 2 is equipped with a cape assembly, which is equipped with a transmission rod 3. A side extension frame 4 is installed on the right side of the assembled box base 1. A center link 5 is mounted on the side extension frame 4 through a bearing. The lower end of the center link 5 is connected to a distribution frame 19, on which the sealed pole body 6 is mounted. A round roller 7 is mounted on the upper end of the center link 5.

[0030] The cape assembly of the present invention can control the circular roller 7 to rotate at a constant angle, thereby achieving the purpose of replacing the sealed pole. The middle link 5, the circular roller 7 and all the sealed pole bodies 6 can rotate synchronously.

[0031] The rotary handle 2 is L-shaped for easy operation. The cape assembly also includes a thick cover plate 8 mounted within the assembly box base 1 and a drive turret 9 connected to the rotary handle 2. The rotary handle 2 and the thick cover plate 8 are connected via a bearing. The front portion of the rotary handle 2 passes through the center of the thick cover plate 8.

[0032] like Figure 2 and Figure 3 As shown, the left end of the driving rod 3 is provided with an extension 3a; the driving frame 9 is provided with a middle slot 9a for the middle portion of the extension 3a to pass through, and the thick cover plate 8 is provided with a rectangular slot 8a for the rear end of the extension 3a to slide into. The cross section of the extension 3a is square.

[0033] In specific application, the present invention can make the driving rod 3 slide along the track of the rectangular groove 8a when the rotating handle 2 is rotated manually. The height of the rectangular groove 8a can be set to 2 to 2.5 times that of the round roller 7.

[0034] like Figure 2 and Figure 4 As shown, the circular arc surface of the roller 7 is evenly distributed with four inclined grooves 7a adapted to the driving rod 3. When the driving rod 3 is lifted and slid, its right end can pass through the inclined groove 7a, thereby driving the roller 7 to rotate at a rated angle.

[0035] Each inclined groove 7a has a central angle of 90 degrees. That is, between two adjacent inclined grooves 7a, the upper end of one inclined groove 7a and the lower end of the other inclined groove 7a lie on the same vertical line. Each inclined groove 7a connects to the upper and lower ends of the roller 7. This structure ensures that the drive rod 3 can continuously engage the inclined groove 7a to control the rotation of the roller 7.

[0036] There are four sealed pole bodies 6 distributed in a ring-shaped manner on the distribution frame 19. In principle, the number of sealed pole bodies 6 is equal to the number of inclined slots 7a.

[0037] Each sealed pole body 6 has two upper connection holes 6a at its lower end. The transformer's metal housing also has two corresponding lower connection holes. By rotating the sealed pole body 6, the two upper connection holes 6a align with the two lower connection holes on the transformer's metal housing, facilitating subsequent mounting.

[0038] like Figure 5 As shown, the assembled box base 1 has a U-shaped hanger 11 mounted inside, on which is mounted a motor 12 and a horizontal guide rod 20. The motor 12 is connected to a threaded screw 13, which is mounted on the U-shaped hanger 11 via a bearing. The threaded screw 13 is coupled to an L-shaped hanger 14, which is slidably connected to the horizontal guide rod 20. That is, under the transmission action of the screw nut, the L-shaped hanger 14 can slide in the front-to-back direction.

[0039] like Figures 5 to 7 As shown, a hydraulic cylinder 15 and a longitudinal guide rod 16 are respectively installed on the L-shaped hanger 14; the hydraulic cylinder 15 is connected to a U-shaped piece 17 that is slidably connected to the longitudinal guide rod 16. That is, the U-shaped piece 17 can be raised and lowered under the drive of the hydraulic cylinder 15.

[0040] Two bayonet holes 17 a are provided at the front of the U-shaped piece 17 , and a T-shaped connecting column 18 that matches the upper connecting hole 6 a is mounted on each bayonet hole 17 a .

[0041] In the present invention, the T-shaped connecting post 18 is designed to be inserted into the upper connecting hole 6a and the lower connecting hole of the transformer, thereby achieving the installation of the sealed pole. However, the aforementioned control of the lifting and forward and backward movement of the T-shaped connecting post 18 is to facilitate the replacement of the sealed pole. Among them, the sealed pole body 6 on the right side is the one in the working state.

[0042] In the initial state, the T-shaped connecting post 18 is inserted into the upper connecting hole 6a of the right-side embedded pole body 6 and the lower connecting hole of the metal shell of the transformer, that is, the embedded pole body 6 is in working use state.

[0043] When the sealed pole body 6 in the working state is damaged and needs to be replaced, it can be completed by simply following the steps below:

[0044] S1: The hydraulic cylinder 15 pulls up the T-shaped connecting column 18 until it is disengaged from the upper connecting hole 6a.

[0045] S2: The motor 12 drives the threaded screw 13 to flip in the opposite direction, so that the T-shaped connecting column 18 moves backward.

[0046] S3: Manually rotate the rotary handle 2 clockwise for one revolution, causing the drive rack 9 to rotate one revolution, i.e., the drive rod 3 moves along a rectangular track. As the drive rod 3 moves from top to bottom along the right track of the rectangular slot 8a, it slides into a single inclined slot 7a, causing the roller 7 to rotate 90 degrees. All the sealed pole bodies 6 also rotate 90 degrees, removing the damaged sealed pole and completing the disassembly. The new sealed pole is then moved to the installation position on the right.

[0047] S4: The motor 12 drives the threaded screw 13 to flip forward, so that the T-shaped connecting column 18 moves forward to above the corresponding upper connecting hole 6a.

[0048] S5: The hydraulic cylinder 15 pushes the T-shaped connecting column 18 downward, so that the T-shaped connecting column 18 is sequentially inserted into the upper connecting hole 6a and the lower connecting hole on the metal shell of the transformer.

[0049] At this point, the replacement work is completed.

[0050] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and description merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A detachable sealed pole for a voltage transformer, comprising an assembly type box seat (1), wherein a connection seat (1a) is provided at the lower portion of the assembly type box seat (1); and a box door (10) is hingedly mounted at the upper front portion of the assembly type box seat (1); Its characteristics are: The assembly type box seat (1) is rotatably connected to a rotary handle (2), the rotary handle (2) is matched with a cape assembly, and the cape assembly is provided with a transmission rod (3); a side extension frame (4) is installed on the right side of the assembly type box seat (1), a middle link (5) is installed on the side extension frame (4) through a bearing, the lower end of the middle link (5) is connected to a distribution frame (19), a sealed pole body (6) is installed on the distribution frame (19), and a round roller (7) is installed on the upper end of the middle link (5); The rotating handle (2) is L-shaped, and the cape assembly further includes a thick cover plate (8) installed in the assembly box seat (1) and a driving rotating frame (9) connected to the rotating handle (2); the rotating handle (2) and the thick cover plate (8) are connected through a bearing; An extension portion (3a) is provided at the left end of the transmission rod (3); a middle through groove (9a) for the middle portion of the extension portion (3a) to pass through is provided on the driving rotating frame (9); and a rectangular groove (8a) for the rear end of the extension portion (3a) to be slidably installed is provided on the thick cover plate (8); Four inclined grooves (7a) adapted to the middle link (5) are evenly distributed on the arc surface of the circular roller (7); The lower end of each sealed pole body (6) is provided with two upper connection holes (6a); The assembly box seat (1) is internally mounted with a U-shaped hanger (11), on which a motor (12) and a horizontal guide rod (20) are mounted; the motor (12) is connected to a threaded screw (13), which is in turn connected to an L-shaped hanger (14) that is slidably connected to the horizontal guide rod (20) in a forward and backward direction; A hydraulic cylinder (15) and a longitudinal guide rod (16) are respectively mounted on the L-shaped hanger (14); the hydraulic cylinder (15) is connected to a U-shaped piece (17) which is slidably connected to the longitudinal guide rod (16); The front portion of the U-shaped piece (17) is provided with two bayonet holes (17a), and each bayonet hole (17a) is fitted with a T-shaped connecting column (18) that matches the upper connecting hole (6a); The middle link (5), the round roller (7) and all the sealed pole bodies (6) can rotate synchronously.

2. The detachable sealed pole for a voltage transformer according to claim 1, characterized in that: The central angle corresponding to each inclined groove (7a) is 90 degrees, and each inclined groove (7a) is connected to the upper and lower ends of the circular roller (7).

3. The detachable sealed pole for a voltage transformer according to claim 1, characterized in that: The sealed pole bodies (6) are provided in four numbers and are distributed in a ring-shaped manner on the distribution frame (19).

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