Relay protection device for main transformer of hydropower station

Abstract

The utility model relates to the technical field of transformer relay protection devices, and particularly discloses a hydropower station main transformer relay protection device, which comprises a base and a protection device body arranged at the top of the base, and at least four groups of mounting blocks are fixedly connected to the bottom of the protection device body. The base is provided with a driving assembly, a mounting block and a guide plate, the top of the base is provided with a mounting groove used for clamping the mounting block in a matched mode, one side of the mounting block is provided with a clamping groove, one side of the inner wall of the mounting groove is provided with a moving groove, and a clamping block is connected into the moving groove in a sliding mode. And along with the downward movement of the guide plate, the driving assembly can drive the clamping block to slide in the moving groove, and the clamping block is clamped into the clamping groove to fix the mounting block, so that the influence on the accuracy of detection data caused by displacement of internal elements due to shaking of the protection device body is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer relay protection device technical field, concretely is hydropower station main transformer relay protection device. BACKGROUND

[0002] The main transformer is one of the core equipment of the hydropower station, and its safe operation is directly related to the power generation efficiency and power supply reliability of the hydropower station. The hydropower station main transformer relay protection device can monitor the operating parameters of the main transformer in real time, timely find the internal faults and abnormal operating states of the main transformer, and rapidly act to remove the faulty transformer, thereby avoiding the expansion of the fault and guaranteeing the safe operation of the main transformer.

[0003] The existing patent No. CN211930251U discloses a relay protection device for instrument transformer, which comprises a transparent visual glass and a transformer touch operation screen. When in use, the handle is opened, and the sliding rail and the sliding groove form a sliding structure, so that the carrier table can be pulled out by pulling the handle. Then, the relay is placed in the carrier table and pushed into the device interior, and the wires of the relay are connected with the transformer. The transparent visual glass and the transformer touch operation screen can be used to edit the relay and the transformer. In this way, the installation of the device is completed.

[0004] The above device may shake or vibrate during operation, which may cause the internal detection elements to shake and change position, thereby affecting the detection accuracy of the power system operating parameters. To solve the above problems, the hydropower station main transformer relay protection device is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a hydropower station main transformer relay protection device to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The hydropower station main transformer relay protection device comprises a base and a protection device body installed on the top of the base. The bottom of the protection device body is fixedly connected with no less than four groups of mounting blocks. The top of the base is provided with mounting grooves for matching the mounting blocks. One side of the mounting block is provided with a clamping groove. One side of the inner wall of the mounting groove is provided with a moving groove. The moving groove is slidably connected with a clamping block.

[0008] The protection device body is slidably connected with a protective baffle on both sides. The protection device body is provided with a fixing assembly for fixing the protective baffle. The bottom of the protective baffle is fixedly connected with a guide plate. The guide plate is provided with a driving assembly for driving the clamping block to slide into the clamping groove.

[0009] In an optional scheme, the fixing assembly comprises a limiting rod and a limiting hole, the limiting rod is rotationally connected to one side of the protective baffle, the limiting hole is formed in one side of the protection device body, the limiting rod is threadedly connected in the limiting hole, and the one side of the protection device body is formed with a positioning hole for matching the threaded connection of the limiting rod.

[0010] In an optional scheme, the driving assembly comprises an extruding rod and a roller, one end of the extruding rod is fixedly connected to one side of the clamping block, the roller is fixedly connected to one end of the extruding rod extending to the outside of the base, and the extruding rod is slidingly connected to one side of the moving groove.

[0011] In an optional scheme, the extruding rod is sleeved with a spring, one end of the spring is connected to one side of the clamping block, and the other end of the spring is connected to one side of the inner wall of the moving groove.

[0012] In an optional scheme, the two groups of protective baffles are fixedly connected with at least two groups of sliding blocks on the sides close to the protection device body, and the protection device body is formed with sliding grooves on the two sides for matching the sliding of the sliding blocks.

[0013] In an optional scheme, one side of the guide plate is provided with a rubber protection pad.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses a protection device body, which comprises a protection device body, a driving assembly, a mounting block, a mounting groove and a guide plate.

[0016] The utility model discloses a protection device body, which comprises a protection device body, a driving assembly, a mounting block, a mounting groove and a guide plate.

[0017] The utility model discloses a protection device body, which comprises a protection device body, a driving assembly, a mounting block, a mounting groove and a guide plate. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the utility model.

[0019] Figure 2 It is the structural schematic diagram of the utility model in the place structure of sliding groove.

[0020] Figure 3 It is the structural schematic diagram of the utility model in the place structure of spring.

[0021] Figure 4 It is structure schematic view of the mobile groove in the utility model.

[0022] In the figure: 11, base; 12, mounting groove; 13, mounting block; 14, protection device body; 15, clamping groove; 16, mobile groove; 17, clamping block; 18, spring; 19, extrusion rod; 20, roller; 21, guide plate; 22, sliding block; 23, sliding groove; 24, positioning hole; 25, limiting rod; 26, protective baffle; 27, limiting hole. DETAILED DESCRIPTION

[0023] In the utility model, unless another explicit provision and limitation, the terms "mounting", "connection", "connection", "fixing" and other terms should be broad understanding, for example, can be fixed connection, can be detachable connection, or integrated; can be mechanical connection, can be electrical connection; can be directly connected, can be indirectly connected through intermediate medium, can be the communication of two elements or the interaction of two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0025] Please refer to Figures 1-4 In the embodiment, the water power station main transformer relay protection device comprises a base 11 and a protection device body 14 mounted on the top of the base 11, the bottom of the protection device body 14 is fixedly connected with not less than four groups of mounting blocks 13, the top of the base 11 is provided with a mounting groove 12 for cooperating with the clamping of the mounting block 13, one side of the mounting block 13 is provided with a clamping groove 15, one side of the inner wall of the mounting groove 12 is provided with a mobile groove 16, the clamping block 17 is slidably connected in the mobile groove 16.

[0026] The both sides of the protection device body 14 are slidably connected with protective baffles 26, the protection device body 14 is provided with a fixing assembly for fixing the protective baffle 26, the bottom of the protective baffle 26 is fixedly connected with a guide plate 21, the guide plate 21 is provided with a driving assembly for driving the clamping block 17 to slide and clamp into the clamping groove 15.

[0027] The fixing assembly comprises a limiting rod 25 and a limiting hole 27, the limiting rod 25 is rotatably connected to one side of the protective baffle 26, the limiting hole 27 is formed in one side of the protection device body 14, the limiting rod 25 is threadedly connected in the limiting hole 27, one side of the protection device body 14 is provided with a positioning hole 24 for matching the threaded connection of the limiting rod 25, the limiting rod 25 is rotated by an external tool, the limiting rod 25 is separated from the limiting hole 27, the protective baffle 26 is moved upward, the guide plate 21 can be fixed and disassembled, so that the protection device body 14 can be conveniently maintained and disassembled by the staff.

[0028] The driving assembly comprises an extrusion rod 19 and a roller 20, one end of the extrusion rod 19 is fixedly connected to one side of the clamping block 17, the roller 20 is fixedly connected to one end of the extrusion rod 19 extending to the outside of the base 11 away from the clamping block 17, the extrusion rod 19 is slidably connected to one side of the moving groove 16, the roller 20 is extruded by the guide plate 21 to drive the extrusion rod 19 to move in the moving groove 16, the extrusion rod 19 drives the spring 18 to stretch and drives the clamping block 17 to be clamped into the clamping groove 15 to fix the mounting block 13.

[0029] The extrusion rod 19 is sleeved with the spring 18, one end of the spring 18 is connected to one side of the clamping block 17, and the other end of the spring 18 is connected to one side of the inner wall of the moving groove 16, the spring 18 can limit the movement of the extrusion rod 19, and the clamping block 17 can be conveniently separated from the clamping groove 15.

[0030] At least two groups of the sliding blocks 22 are fixedly connected to one side of the protective baffle 26 close to the protection device body 14, and sliding grooves 23 for matching the sliding blocks 22 are formed in the two sides of the protection device body 14, the sliding blocks 22 are slid in the sliding grooves 23 by setting the sliding blocks 22 and the sliding grooves 23, and the sliding of the protective baffle 26 can be guided and limited.

[0031] The guide plate 21 is provided with a rubber protective pad on one side, the rubber protective pad can protect the guide plate 21 and reduce damage to the guide plate 21.

[0032] The utility model discloses a working principle is: when installing, the protection device body 14 is placed at the top of base 11, and the mounting block 13 is clamped into the installation groove 12, and the roller 20 contacts one side of the guide plate 21, and rolls along the arc side of the guide plate 21, and the roller 20 is extruded by the guide plate 21 and drives the extruding rod 19 to move in the moving groove 16, and the extruding rod 19 drives the spring 18 to stretch and drives the clamping block 17 to clamp into the clamping groove 15, fixes the mounting block 13, thereby positioning the protection device body 14, reduces the protection device body 14 to appear the shaking and leads to the internal element to produce the displacement, thereby influences the accuracy of detection data, when needing to detect and maintain the protection device body 14, through external tool to the rotation of the limiting rod 25, makes the limiting rod 25 separate from the limiting hole 27, and the protective baffle 26 is moved upward, and the protective baffle 26 drives the guide plate 21 to move upward, and the roller 20 slides on the guide plate 21, and the spring 18 is retracted and the clamping block 17 is slid in the spring 18, and separates from the clamping groove 15, and then the limiting rod 25 is inserted into the limiting hole 27.

[0033] The above is only the preferred embodiment of the utility model, and is not other forms of the limitation of the utility model, and any skilled person in the art can utilize the disclosed technical content to change or modify equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the utility model still belongs to the protection scope of the utility model technical scheme without departing from the utility model technical scheme content.

Claims

1. A relay protection device for a main transformer of a hydropower station, comprising a base (11) and a protection device body (14) installed on the top of the base (11), characterized in that: The bottom of the protection device body (14) is fixedly connected with not less than four groups of mounting blocks (13), the top of the base (11) is provided with mounting grooves (12) for matching the mounting blocks (13), one side of the mounting block (13) is provided with a clamping groove (15), one side of the inner wall of the mounting groove (12) is provided with a moving groove (16), and the moving groove (16) is slidably connected with a clamping block (17). The two sides of the protection device body (14) are slidably connected with protective baffles (26), the protection device body (14) is provided with a fixing assembly for fixing the protective baffles (26), the bottom of the protective baffle (26) is fixedly connected with a guide plate (21), and the guide plate (21) is provided with a driving assembly for driving the clamping block (17) to slide into the clamping groove (15).

2. The relay protection device for the main transformer of a hydroelectric power station according to claim 1, characterized in that: The fixing assembly comprises a limiting rod (25) and a limiting hole (27), the limiting rod (25) is rotatably connected to one side of the protective baffle (26), the limiting hole (27) is formed in one side of the protection device body (14), the limiting rod (25) is threadedly connected in the limiting hole (27), and one side of the protection device body (14) is provided with a positioning hole (24) for matching the threaded connection of the limiting rod (25).

3. The relay protection device for the main transformer of a hydroelectric power station according to claim 1, characterized in that: The driving assembly comprises an extrusion rod (19) and a roller (20), one end of the extrusion rod (19) is fixedly connected to one side of the clamping block (17), the roller (20) is fixedly connected to one end of the extrusion rod (19) extending to the outside of the base (11) away from the clamping block (17), and the extrusion rod (19) is slidably connected to one side of the moving groove (16).

4. The relay protection device for the main transformer of a hydroelectric power station according to claim 3, characterized in that: The extrusion rod (19) is sleeved with a spring (18), one end of the spring (18) is connected to one side of the clamping block (17), and the other end of the spring (18) is connected to one side of the inner wall of the moving groove (16).

5. The hydroelectric plant main transformer protection device of claim 1, wherein: The two groups of protective baffles (26) are fixedly connected with at least two groups of sliding blocks (22) near one side of the protection device body (14), and the two sides of the protection device body (14) are provided with sliding grooves (23) for matching the sliding of the sliding blocks (22).

6. The hydroelectric plant main transformer protection device of claim 1, wherein: One side of the guide plate (21) is provided with a rubber protective pad.

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