Lifting and moving equipment for Potential Transformer

Abstract

A lifting and moving device for a potential transformer (PT) is provided. The lifting and moving device for a potential transformer according to an embodiment of the present invention comprises: an electric lift car having a lifting section capable of moving up and down; a PT mounting section formed in a rectangular shape with open front and rear ends, configured to allow mounting of a potential transformer (PT) through the open front end; and a connecting section having one side coupled to the lifting section and the other side coupled to the top of the PT mounting section. By doing so, a lifting and moving device for a potential transformer capable of lifting and moving a PT used in a power plant is provided, thereby preventing safety accidents occurring during the lifting and moving process of the PT and improving the efficiency of the lifting and moving operations of the PT.

Description

Technology Field

[0001] The present invention relates to a lifting facility, and more specifically, to a lifting and moving device for a potential transformer (PT) for power instrumentation. Background Technology

[0003] A potential transformer (hereinafter PT) is connected in parallel to the power line of a transmission and distribution system to monitor the voltage of the power plant system at all times, and a voltage indicator is installed on the secondary side of the PT to monitor the voltage transformed from high voltage to low voltage.

[0004] Power plants inspect the integrity of these PTs during planned preventive maintenance and in the event of a failure, and when a reason for PT replacement arises, replacement must be carried out after verifying the integrity of the new part.

[0005] Previously, after confirming that the primary busbar voltage supplied to the PT is cut off, the PT panel door is opened, and when inspecting the PT 2nd and 3rd stages, a work platform is installed in front of the panel, and after wearing a high-pressure flame-retardant suit, the drawer-type panel in which the PT of the equipment to be worked is installed is pulled out (separating the PT panel from the busbar) and the residual voltage is discharged.

[0006] Afterward, the worker separates the fuse and fuse holder installed on the primary side of the PT, disconnects the wiring on the secondary side of the PT, and then separates the base bolt. Then, the worker separates the front cover of the PT drawer-type panel. When replacing the PT on the 1st-tier panel, the worker lifts the PT from the floor and lowers it, while for the PT on the 2nd and 3rd-tier panels, the worker lifts the PT from a work platform and lowers it to a worker waiting below. However, there are problems such as safety accidents occurring during the process of the worker directly lifting the PT and lowering it to a worker waiting below, or reduced work efficiency due to the weight of the PT. The problem to be solved

[0008] The present invention has been devised to solve the above-mentioned problems, and the objective of the present invention is to provide lifting and moving equipment for power instrument transformers capable of lifting and moving a PT (instrument transformer) to extract or install the PT used in a power plant. means of solving the problem

[0010] A lifting and moving equipment for a power meter transformer according to one embodiment of the present invention for achieving the above objective comprises: an electric lift car having a lifting part capable of moving up and down; a PT mounting part formed in a rectangular shape, with the front and rear open so as to allow mounting of a power meter transformer (Potential Transformer, PT) through the open front; and a connecting part having one side coupled to the lifting part and the other side coupled to the upper end of the PT mounting part.

[0011] And the connecting part is formed by extending along the longitudinal direction from one side to the other, and can be implemented as a square pipe with a rectangular or square cross-section and an open bottom surface.

[0012] Additionally, the connecting portion includes a rail formed on the inner side along the longitudinal direction; and a roller seated along the rail; and the PT mounting portion may include a PT mounting block formed in a rectangular shape, with the front and rear sides open; and a coupling member that is formed extending upward from the upper end of the PT mounting block and coupled to the roller, so that the PT mounting block can move horizontally along the longitudinal direction of the connecting portion.

[0013] And when mounting the PT, the PT mounting section moves horizontally along the longitudinal direction of the connecting section as the roller moves along the rail, allowing the PT to be mounted inside the PT mounting block through the open front.

[0014] Additionally, the PT mounting section may further include a pair of anti-detachment bolts that are fastened to the front and rear of the open PT mounting block, respectively, when the PT is mounted inside the PT mounting block, thereby preventing the PT from detaching to the front or rear.

[0015] Meanwhile, according to another embodiment of the present invention, a lifting and moving device for a power meter transformer comprises: an electric lift car; a PT mounting section configured to enable the mounting of a power meter transformer (Potential Transformer, PT); and a connecting section, one side of which is coupled to the electric lift car and the other side of which is coupled to the upper end of the PT mounting section. Effects of the invention

[0017] As described above, according to embodiments of the present invention, a lifting and moving device for a power instrument transformer capable of lifting and moving a PT used in a power plant is provided, thereby preventing safety accidents occurring during the lifting and moving process of the PT and improving the efficiency of the lifting and moving operation of the PT. Brief explanation of the drawing

[0019] FIG. 1 is a drawing provided for the description of the configuration of a lifting and moving equipment for a power instrument transformer according to one embodiment of the present invention. FIG. 2 is a drawing provided to explain the configuration of a PT mounting portion of a lifting and moving equipment for a power meter transformer according to one embodiment of the present invention in more detail, and Figure 3 is a drawing showing a power meter transformer mounted on the inside of the PT mounting part shown in Figure 2. Specific details for implementing the invention

[0020] The present invention will be described in more detail below with reference to the drawings.

[0021] FIG. 1 is a drawing provided for the configuration description of a lifting and moving equipment for a power instrument transformer according to one embodiment of the present invention, FIG. 2 is a drawing provided for a more detailed configuration description of the PT mounting part of the lifting and moving equipment for a power instrument transformer according to one embodiment of the present invention, and FIG. 3 is a drawing showing a power instrument transformer mounted inside the PT mounting part shown in FIG. 2.

[0022] The lifting and moving equipment for a power instrument transformer according to the present embodiment may be composed of an electric lift car (110), a PT mounting part (120), and a connecting part (130).

[0023] The electric lift car (110) is provided to be movable, and may be equipped with a lifting part (111) that can move up and down.

[0024] The lifting unit (111) includes a lift facility installed at the front center of the electric lift car (110), and the lift facility can move up and down the electric lift car (110). When moving downward, if a transformer for a power meter is mounted inside the PT mounting unit (120) coupled to the connecting unit (130), it can be moved upward by the operation of a worker.

[0025] That is, the electric lift car (110) lowers the lifting unit (111) so that a power meter transformer is mounted inside the PT mounting unit (120) connected to the connecting unit (130), and when the power meter transformer is mounted inside the PT mounting unit (120), the lifting unit (111) is raised and then moved to a position designated by the operator.

[0026] The PT mounting section (120) is formed in a rectangular shape, with the front and rear sides open, so that a power meter transformer can be mounted through the open front side.

[0027] The PT mounting section (120) may include a PT mounting block (121) formed in a rectangular shape with the front and rear sides open, and a connecting member (122) that is formed extending upward from the upper end of the PT mounting block (121) and connected to a roller (133) so that the PT mounting block (121) can move horizontally along the longitudinal direction of the connecting section (130).

[0028] Specifically, the PT mounting section (120) can be horizontally moved along the longitudinal direction of the connecting section (130) as the roller (133) moves along the rail (132) when mounting the PT, so that the PT can be mounted inside the PT mounting block (121) through the open front.

[0029] And the PT mounting section (120) may further include a pair of anti-detachment bolts (123) that are fastened to the front and rear of the open PT mounting block (121) respectively when the PT is mounted inside the PT mounting block (121), thereby preventing the PT from detaching (e.g., falling) to the front or rear.

[0030] One side of the connecting part (130) is connected to the lifting part (111), and the other side can be connected to the upper part of the PT mounting part (120).

[0031] For example, the connecting part (130) is formed extending along the longitudinal direction from one side to the other and can be implemented as a square pipe with a rectangular or square cross-section and an open bottom surface.

[0032] Specifically, the connecting part (130) may include a rectangular pipe-shaped body (131) that is extended along the longitudinal direction from one side to the other and has a rectangular or square cross-section with an open bottom surface, a rail (132) formed on the inside of the body (131) along the longitudinal direction of the body (131), and a roller (133) that is seated along the rail (132).

[0033] Although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. Various modifications are possible by those skilled in the art without departing from the essence of the invention as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention. Explanation of the symbols

[0035] 10: Transformer for power instruments 110: Electric lift car 111 : Salvage Unit 120 : PT Mounting Unit 121 : PT Mount Block 122 : Connecting member 123: Anti-detachment bolt 130 : Connection part 131 : Body 132 : Rail 133 : Roller

Claims

Claim 1 An electric lift car equipped with a lifting section capable of vertical movement; a PT mounting section formed in a rectangular shape with the front and rear open, configured to allow mounting of a potential transformer (PT) through the open front; and a connecting section having one side connected to the lifting section and the other side connected to the top of the PT mounting section; wherein the connecting section is implemented as a square pipe extending along the longitudinal direction from one side to the other, having a rectangular or square cross-section, and having an open bottom surface; the connecting section includes a rail formed on the inner side along the longitudinal direction; and a roller seated along the rail; and the PT mounting section is formed in a rectangular shape, but is configured to have the front and rear open, comprising a PT mounting block. A lifting and moving equipment for a power instrument transformer, characterized by comprising: a connecting member that is formed to extend upward from the upper part of the PT mounting block and coupled to a roller so that the PT mounting block can move horizontally along the longitudinal direction of the connecting part; wherein the PT mounting part moves horizontally along the longitudinal direction of the connecting part as the roller moves along the rail when the PT is mounted, so that the PT is mounted inside the PT mounting block through the open front; and further comprising a pair of anti-detachment bolts that are respectively fastened to the front and rear of the open PT mounting block when the PT is mounted inside the PT mounting block to prevent the PT from detaching to the front or rear. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete

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