Contact type transformer substation pressing plate monitoring device

Abstract

The utility model discloses a contact-type transformer station pressure plate monitoring device, and relates to the technical field of transformer station pressure plates. Comprising a base plate, a rotating pressing plate is arranged on the base plate, and a first monitoring unit for monitoring input of the pressing plate and a second monitoring unit for monitoring quit of the pressing plate are arranged on the base plate. According to the utility model, through the arrangement of the monitoring unit I and the monitoring unit II, the problem that in the prior art, the on-off monitoring of the pressing plate is not in place and the misoperation phenomenon is avoided is solved; and by arranging the third monitoring unit, monitoring during pressing plate input is further enhanced, and improper pressing plate input is avoided.

Description

Technical Field

[0001] This utility model relates to the field of substation pressure plate monitoring technology, specifically to a contact-type substation pressure plate monitoring device. Background Technology

[0002] Ensuring the safe operation of substations is crucial during routine operation and maintenance. Therefore, a large number of safety devices, such as relay protection devices, are deployed to improve operational stability. To ensure the proper functioning of these relay protection devices, tripping circuits require pressure plates. Maintenance personnel currently determine the operational status of the relay protection devices by manually checking the pressure plate's on / off state. This process is time-consuming, inefficient, and involves a significant workload for inspections.

[0003] Engaging and disengaging protection circuits is a crucial step in the operation of protection circuit boards. It requires accurate and orderly operation. Only by fully understanding the protection circuit boards of substations can we better ensure the stable power supply of the power system.

[0004] The existing contact-type substation pressure plates have the following defects:

[0005] Using only an electromagnetic sensor to monitor the position of the pressure plate of the pressure plate switch is a single, limited method.

[0006] Monitoring solely through electromagnetic sensors can easily lead to false triggering and incorrect monitoring results.

[0007] The lack of restrictions on the position of the pressure plate of the pressure switch may lead to operator errors. Utility Model Content

[0008] In view of the above-mentioned technical deficiencies, the purpose of this utility model is to provide a contact-type substation pressure plate monitoring device to solve the problem that the existing pressure plate monitoring methods are singular and prone to misoperation.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a contact-type substation pressure plate monitoring device, including a base plate, on which a rotating pressure plate is disposed, and on which a monitoring unit one for monitoring the engagement of the pressure plate and a monitoring unit two for monitoring the disengagement of the pressure plate are disposed.

[0010] Preferably, the monitoring unit includes an input switch and an input mechanism that drives the input switch to start and stop. Correspondingly, a mounting groove is provided on the base plate for the input mechanism to start and stop.

[0011] Preferably, the monitoring unit two includes an exit switch and an exit mechanism that drives the exit switch to start and stop.

[0012] Preferably, the input mechanism includes a fixed frame disposed on the mounting groove and a push rod that slides along the fixed frame, and a spring is sleeved on the push rod.

[0013] Preferably, a clamp is fitted on the pressure plate, and a push block is provided at the bottom of the clamp to push the push rod to slide, and a slider is provided at the bottom of the push block.

[0014] Preferably, the push block is provided with movable balls, the base plate has grooves at corresponding positions to restrict the movement of the balls, and the grooves are provided with pressing rods to release the ball's position.

[0015] Preferably, the exit mechanism includes a first pressure block disposed on the pressure plate and a second pressure block movable on the substrate. When the pressure plate rotates onto the second pressure block, the first pressure block squeezes the second pressure block downward to contact the exit switch.

[0016] Preferably, the base plate is provided with a fixed rod and a movable rod, and the pressure plate rotates along the fixed rod. When the plate is inserted, the pressure plate is fitted onto the movable rod.

[0017] Preferably, a monitoring unit three is provided at the bottom of the substrate. The monitoring unit three includes a locking switch, a positioning shaft with gears, and a rack. After the movable rod moves down, it is threadedly connected to the positioning shaft and drives the rack meshing with the positioning shaft to move.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention solves the problem of inadequate monitoring of the pressure plate's movement in the prior art by setting up monitoring unit one and monitoring unit two, thus avoiding the phenomenon of misoperation.

[0020] This utility model further strengthens the monitoring of the pressure plate during its insertion by setting up monitoring unit three, thus avoiding improper insertion of the pressure plate. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the overall structure in the operational state provided for an embodiment of this utility model.

[0023] Figure 2 This is a schematic diagram of the overall structure in the exit state provided for an embodiment of this utility model.

[0024] Figure 3A schematic diagram of the input mechanism provided for an embodiment of this utility model.

[0025] Figure 4 This is a cross-sectional view of the overall structure provided for an embodiment of the present utility model.

[0026] Figure 5 This is a schematic diagram of the structure of monitoring unit three provided in an embodiment of the present utility model.

[0027] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Pressure plate; 11. Gasket; 12. Fixing rod; 13. Movable rod; 14. Mounting groove; 311. Push rod; 312. Fixing frame; 313. Spring 1; 321. Clamp; 322. Push block; 323. Slider; 324. Ball bearing; 325. Pressing rod; 411. Pressure block 1; 412. Pressure block 2; 413. Mounting hole; 414. Spring 2; 511. Positioning shaft; 512. Rack. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1:

[0030] like Figures 1-5 As shown, this utility model provides a contact-type substation pressure plate monitoring device, including a base plate 1. In this embodiment, the base plate 1 is installed on the control room or protection cabinet of the transformer. In this embodiment, the installation method of the base plate 1 is not limited, and it can be fixed by bolts or snap-fitted to the control room or protection cabinet.

[0031] A pressure plate 2 is provided on the substrate 1. The pressure plate 2 includes a fixed part and a movable part. A gasket 11 is provided on the substrate 1. The gasket 11 is a circular gasket.

[0032] A fixed rod 12 and a movable rod 13 are provided on the base plate 1. The fixed rod 12 passes through the fixed part of the pressure plate 2 and the base plate 1. The circumference of the fixed rod 12 is threaded, so it can be threadedly connected to the control room or protection cabinet. The movable rod 13 passes through the movable part of the pressure plate 2 and the base plate 1, and the movable rod 13 rotates on the movable part of the pressure plate 2 and the base plate 1. For this purpose, holes are made in the fixed part and movable part of the pressure plate 2, as well as in the base plate 1 and the gasket 11, so that the fixed rod 12 and the movable rod 13 can pass through them.

[0033] The movable part of the pressure plate 2 has an opening on one side for fitting onto the movable rod 13. When the pressure plate 2 is fitted onto the movable rod 13, the pressure plate 2 is in the engaged state. When the pressure plate 2 is separated from the movable rod 13, the pressure plate 2 is in the disengaged state.

[0034] To ensure that the pressure plate 2 is in the engaged or disengaged state, this embodiment provides monitoring unit 1 and monitoring unit 2 on the substrate 1 to monitor the state of the pressure plate 2.

[0035] Specifically, the monitoring unit includes an input switch and an input mechanism. A mounting groove 14 is formed on the base plate 1. The mounting groove 14 is a rectangular groove and is located on one side of the opening of the pressure plate 2. An input mechanism is provided in the mounting groove 14. In this embodiment, the input mechanism includes a push rod 311 and a fixing frame 312. The fixing frame 312 is fixedly connected to the mounting groove 14. The push rod 311 is sleeved on the fixing frame 312 and slides on the fixing frame 312. A spring 313 is sleeved on the end of the push rod 311 near the opening of the pressure plate 2.

[0036] In order to enable the engagement mechanism to move and contact the engagement switch when the pressure plate 2 is engaged, a clamp 321 is fitted on the pressure plate 2. A push block 322 is connected to the bottom of the clamp 321. Considering that it is difficult to push the push rod 311 by relying solely on the push block 322, a sliding groove is opened at the bottom of the clamp 321 and the push block 322. A slider 323 is slidably connected in the sliding groove of the clamp 321 and the push block 322.

[0037] When the pressure plate 2 rotates, the slider 323 moves along with the pressure plate 2 on the mounting groove 14. To enable the slider 323 to slide within the mounting groove 14, both the slider 323 and the mounting groove 14 are rounded. This embodiment does not limit the size of the rounded corners; it is sufficient to ensure that the slider 323 slides smoothly within the mounting groove 14 without jamming. Furthermore, this embodiment does not limit the size of the slider 323; it is sufficient to ensure that the slider 323 does not jam within the mounting groove 14 when rotating with the pressure plate 2. When the pressure plate 2 is in the retracted state, the slider 323 is placed within the push block 322.

[0038] In this embodiment, the switch is one or more of the following: micro switch, limit switch, magnetic induction switch, Hall element, reed switch, infrared switch, and laser induction switch.

[0039] In this embodiment, the switch is preferably a micro switch, and the type can be selected according to specific needs. According to size, it can include ordinary type, small type, and ultra-small type; according to protection performance, it can include waterproof type, dustproof type, and explosion-proof type; according to the breaking form, it can include single-pole type, double-pole type, and multi-pole type.

[0040] Specifically, the engagement switch is covered with a spring, preferably a copper sheet. When the slider 323 pushes the push rod 311 to contact the spring and squeezes the spring to connect with the engagement switch, the engagement switch is pressed. In this embodiment, an indicator light and a buzzer can be provided on the base plate 1. The indicator light and the engagement switch are electrically connected, so that when the pressure plate 2 and the engagement switch are properly engaged, the indicator light will display normally. If the engagement is improper, causing the push rod 311 to fail to contact the engagement switch, the engagement switch will control the buzzer to sound an alarm.

[0041] Considering that after the pressure plate 2 is inserted, the spring 313 is compressed, if there is no limiting structure, the push block 322 will push the pressure plate 2 back, causing the insertion state to be unstable. Therefore, this embodiment provides a movable ball 324 on the push block 322, and a hole is opened on the push block 322 to allow the ball 324 to move. A groove is opened on the base plate 1 to limit the ball 324, and a pressing rod 325 is provided on the groove. When it is necessary to release the insertion state, the ball 324 can be disengaged downward from the groove by pressing the pressing rod 325.

[0042] Example 2:

[0043] like Figure 2 , Figure 4 As shown, the monitoring unit 2 includes an exit switch and an exit mechanism. In this embodiment, the exit switch and the entry switch have the same structure and principle, and the exit switch is also equipped with a spring. The exit switch will not be described in detail here.

[0044] The withdrawal mechanism includes a first pressure block 411 and a second pressure block 412. Specifically, the first pressure block 411 is fixedly connected to the bottom of one end of the opening of the pressure plate 2. A mounting hole 413 is opened on the base plate 1. A second spring 414 is provided at the bottom of the second pressure block 412. Both the second pressure block 412 and the second spring 414 are located in the mounting hole 413. A withdrawal switch is provided in the mounting hole 413. When the pressure plate 2 is in the withdrawal state, the pressure plate 2 rotates to the mounting hole 413, pressing the second pressure block 412 downward to contact the withdrawal switch. The withdrawal switch is electrically connected to the indicator light. At this time, the withdrawal indicator light is displayed normally.

[0045] Example 3

[0046] Considering that when the engagement status of the pressure plate 2 is monitored solely by the engagement mechanism, the pressure plate 2 may not be limited after the engagement mechanism is pushed to contact the engagement switch, or the pressure plate 2 may easily shift when the operator forgets to press down the movable rod 13, resulting in unstable engagement of the pressure plate 2, this embodiment is further improved based on the first embodiment to prompt the operator to press down the movable rod 13 to limit the engagement of the pressure plate 2.

[0047] Specifically, such as Figure 5 As shown,

[0048] A monitoring unit three is provided at the bottom of the substrate 1. Specifically, the monitoring unit three includes a locking switch, a positioning shaft 511 with gears, and a rack 512. The positioning shaft 511 and the rack 512 mesh. In this embodiment, the monitoring unit three can be installed in the control room or on the protection cabinet. In this embodiment, the locking switch and the engagement switch have the same structure and principle, and the locking switch is also provided with a spring. The locking switch will not be described in detail here.

[0049] The bottom of the movable rod 13 is threaded. When the movable rod 13 is pressed down and threaded to the positioning shaft 511, it drives the rack 512 to move. When the movable rod 13 rotates to contact the pressure plate 2, the rack 512 touches the locking switch. At this time, the indicator light displays normally. If the movable rod 13 does not rotate to contact the pressure plate 2, the rack 512 will not touch the locking switch, and the buzzer will sound an alarm.

[0050] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A contact-type substation pressure plate monitoring device, characterized in that, Includes a substrate (1), on which a rotating pressure plate (2) is provided, and on which a monitoring unit one for monitoring the entry of the pressure plate (2) and a monitoring unit two for monitoring the exit of the pressure plate (2) are provided; The monitoring unit includes an input switch and an input mechanism that drives the input switch to start and stop. Correspondingly, the base plate (1) has an installation groove (14) for the input mechanism to start and stop. The second monitoring unit includes an exit switch and an exit mechanism that drives the exit switch to start and stop. The input mechanism includes a fixed frame (312) set on the mounting groove (14) and a push rod (311) that slides along the fixed frame (312), and a spring (313) is sleeved on the push rod (311). The pressure plate (2) is fitted with a clamp (321), and the bottom of the clamp (321) is provided with a push block (322) for sliding the push rod (311), and the bottom of the push block (322) is provided with a slider (323). The exit mechanism includes a first pressure block (411) disposed on the pressure plate (2) and a second pressure block (412) movable on the base plate (1). When the pressure plate (2) rotates onto the second pressure block (412), the first pressure block (411) squeezes the second pressure block (412) down to contact the exit switch.

2. The contact-type substation pressure plate monitoring device as described in claim 1, characterized in that, The push block (322) is provided with a movable ball (324), and the base plate (1) has a groove at the corresponding position to restrict the movement of the ball (324), and a pressing rod (325) is provided on the groove to release the ball (324) from the limit.

3. The contact-type substation pressure plate monitoring device as described in claim 1, characterized in that, The base plate (1) is provided with a fixed rod (12) and a movable rod (13). The pressure plate (2) rotates along the fixed rod (12). When it is put into operation, the pressure plate (2) is fitted onto the movable rod (13).

4. The contact-type substation pressure plate monitoring device as described in claim 3, characterized in that, The bottom of the substrate (1) is provided with a monitoring unit three, which includes a locking switch, a positioning shaft (511) with gears and a rack (512). After the movable rod (13) moves down, it is threadedly connected to the positioning shaft (511) and drives the rack (512) that meshes with the positioning shaft (511) to move.

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