Protective cover for preventing misoperation of relay protection pressing plate in thermal power plant

Abstract

The utility model relates to the technical field of relay protection pressing plates, in particular to a thermal power plant relay protection pressing plate maloperation prevention protective cover which comprises a protective cover body and a base arranged below the protective cover body. By arranging a clamping block and a clamping strip in the connecting assembly, the protective cover body can be clamped and fixed, the stability of the protective cover body during use is kept, meanwhile, the disassembly and assembly mode is rapid, simple and convenient, and convenience can be effectively provided for workers; by arranging the protective cover body with the inclined parts on the four sides, when the relay protection pressing plate is protected, if external mistaken touch or collision occurs, the four matched inclined parts are used for counteracting collision force, and the design of the inclined planes enables the collision force not to be directly concentrated at a certain position any more, so that the safety of the relay protection pressing plate is improved. Instead, the inclined surface is dispersed to a larger contact area, so that the strength of local stress is reduced, and the protective cover body can be prevented from being deformed, loosened or damaged due to sudden impact.

Description

Technical Field

[0001] This utility model relates to the field of relay protection pressure plate technology, and in particular to a protective cover for preventing the relay protection pressure plate from malfunctioning in thermal power plants. Background Technology

[0002] In power systems, relay protection devices are crucial for ensuring the safe operation of power equipment and lines. As a core component of relay protection devices, the relay protection plate is responsible for real-time monitoring of changes in signals such as current and voltage, and responding according to preset thresholds to protect the system from abnormal conditions such as overloads and short circuits. However, because relay protection plates are usually exposed inside electrical equipment or distribution cabinets, workers may accidentally touch them during equipment maintenance or operation, causing unnecessary activation of the protection device and affecting the normal operation of the power system. Therefore, installing anti-accidental contact protective covers on relay protection plates is particularly important.

[0003] Existing protective covers are usually made of visible plastic material and designed as a cover or fixed structure. These protective covers are generally connected to the relay protection device by screws, clips or pins. Therefore, when personnel need to maintain the relay protection plate, the disassembly process is relatively cumbersome. At the same time, the plastic protective cover is easy to break after impact, thus gradually losing its protective effect on the relay protection plate.

[0004] Therefore, a protective cover for preventing the relay protection pressure plate from malfunctioning in thermal power plants is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a protective cover for the relay protection pressure plate of thermal power plants to solve the above problems, thereby improving the problem that the traditional protective cover body is cumbersome to disassemble and assemble and is easily damaged.

[0006] This utility model achieves the above objectives through the following technical solution: a protective cover for preventing the relay protection pressure plate from malfunctioning in a thermal power plant, comprising: a protective cover body and a base disposed below it, wherein grooves are provided in the middle and sides of the base, and a snap-fit ​​strip is fixedly connected to the lower inner part of the protective cover body.

[0007] A connecting component, wherein the connecting component is disposed in the base;

[0008] The connecting component includes a locking block that slides horizontally in a groove on the side of the base. The locking block is adapted to the locking strip. A rope is fixedly connected to one side of the locking block, and a movable plate for fixing the relay protection pressure plate is fixedly connected to the other end of the rope.

[0009] Preferably, the movable plate vertically slides in the middle groove of the base, and a first spring is fixedly connected to the lower side of the movable plate, so that the movable plate can be lifted and reset after being pressed by the staff, and the clamping block can be reset in the side groove of the base for clamping the protective cover body next time.

[0010] Preferably, the clamping block is fixedly connected with a second spring on the side close to the inner wall of the side groove of the base, and the other end of the second spring is fixedly connected with the inner wall of the side groove of the base, so that the clamping block can be ejected and reset for subsequent clamping with the clamping strip.

[0011] Preferably, the upper side of the protective cover body is designed as an opening, and the opening size of the protective cover body is consistent with the caliber of the middle groove of the base.

[0012] Preferably, a cover plate is hingedly connected to the opening of the protective cover body, and the cover plate and the protective cover body are both made of glass, so that the cover plate can facilitate the staff to open and maintain the relay protection pressure plate in the protective cover body.

[0013] Preferably, inclined surfaces are arranged on four sides of the protective cover body, and the four inclined surfaces of the protective cover body are matched with the cover plate, so that when the protective cover body is subjected to external impact or collision, the impact force is no longer directly concentrated on a certain position, but is dispersed to a larger contact area through the inclined surfaces, thereby reducing the local stress intensity, and deformation, loosening or damage of the protective cover body due to sudden impact can be avoided.

[0014] Preferably, a sliding groove is formed in the inner wall of the middle groove of the base, and a sliding seat is vertically and slidingly connected in the sliding groove, and the side close to the movable plate of the sliding seat is fixedly connected with the movable plate, so that the movable plate can be vertically limited by the sliding groove and the sliding seat.

[0015] The utility model discloses the beneficial effect is:

[0016] 1. The clamping block and the clamping strip in the connecting assembly can clamp and fix the protective cover body, keep the stability of the protective cover body during use, and provide convenience for the staff effectively.

[0017] 2. The protective cover body provided with the inclined parts on four sides can offset the impact force by the four mutually matched inclined parts when the relay protection pressure plate is protected, and the design of the inclined surfaces can make the impact force no longer directly concentrated on a certain position, but dispersed to a larger contact area through the inclined surfaces, thereby reducing the local stress intensity, and deformation, loosening or damage of the protective cover body due to sudden impact can be avoided. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the protective cover for the relay protection pressure plate of the thermal power plant according to this utility model;

[0019] Figure 2 This is a structural breakdown diagram of the protective cover for the relay protection pressure plate of a thermal power plant according to this utility model.

[0020] Figure 3 This is a schematic diagram of the base and movable plate of the anti-relay protection cover for thermal power plant relay protection pressure plate malfunction.

[0021] Figure 4 This is a schematic diagram showing the disassembled structure of the base and movable plate of the protective cover for the relay protection pressure plate of a thermal power plant.

[0022] In the diagram: 1. Base; 2. Protective cover body; 3. Cover plate; 4. Clip strip; 5. Connecting assembly; 501. Movable plate; 502. First spring; 503. Rope; 504. Second spring; 505. Clip block; 506. Slide groove; 507. Slide seat. Detailed Implementation

[0023] 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.

[0024] In practical implementation: such as Figures 1-4 As shown, a protective cover for preventing the relay protection pressure plate from malfunctioning in a thermal power plant includes: a protective cover body 2 and a base 1 disposed below it. The base 1 has grooves in the middle and sides. A snap-fit ​​strip 4 is fixedly connected to the lower inner part of the protective cover body 2.

[0025] Connecting component 5 is disposed in base 1;

[0026] In the power system, the relay protection device is an important guarantee for the safe operation of power equipment and lines. The relay protection pressure plate, as one of the core components of the relay protection device, is responsible for real-time monitoring of changes in current, voltage and other signals, and responding according to the preset threshold to protect the system from overload, short circuit and other abnormal conditions. However, since the relay protection pressure plate is usually exposed in the electrical equipment or in the power distribution cabinet, when the staff is maintaining or operating the equipment, they may inadvertently touch the relay protection pressure plate, causing the protection device to act unnecessarily and affecting the normal operation of the power system. Therefore, it is particularly important to set a mistake-proof protective cover body 2 on the relay protection pressure plate;

[0027] Among them, the connecting assembly 5 includes a clamping block 505 horizontally sliding in the groove of the side of the base 1, the clamping block 505 is matched with the clamping strip 4, one side of the clamping block 505 is fixedly connected with a rope 503, the other end of the rope 503 is fixedly connected with a movable plate 501 for fixing the relay protection pressure plate; the movable plate 501 vertically slides in the middle groove of the base 1, the lower side of the movable plate 501 is fixedly connected with a first spring 502; the clamping block 505 is fixedly connected with a second spring 504 on the side close to the inner wall of the side groove of the base 1, the other end of the second spring 504 is fixedly connected with the inner wall of the side groove of the base 1; the upper side of the protective cover body 2 is designed as an opening, the size of the opening of the protective cover body 2 is consistent with the caliber of the middle groove of the base 1; the opening of the protective cover body 2 is hingedly connected with a cover plate 3, the cover plate 3 and the protective cover body 2 are both made of glass;

[0028] In specific use, first the staff fixes the relay protection pressure plate on the movable plate 501 by using the connecting structure, then the protective cover body 2 can be taken and covered on the base 1;

[0029] When the protective cover body 2 is lowered, first the inclined surface of the clamping strip 4 of the protective cover body 2 will contact and press the inclined surface of the clamping block 505, at this time the clamping block 505 will be displaced to the groove of the side of the base 1 and press the second spring 504, when the lower side of the protective cover body 2 contacts the base 1, it means that the clamping block 505 and the clamping strip 4 have been misaligned, at this time the second spring 504 will push the clamping block 505 out of the groove and block above the clamping strip 4, at this time the protective cover body 2 as a whole will be fixed and start to maintain the relay protection pressure plate;

[0030] When the subsequent personnel need to maintain the relay protection pressure plate, they only need to open the cover plate 3 and press the movable plate 501, at this time the movable plate 501 can be lowered and pull the rope 503, the four ropes 503 on the four sides of the movable plate 501 will simultaneously pull the four clamping blocks 505 to relatively displace, at this time the upper side of the four clamping strips 4 inside the protective cover body 2 will no longer be limited;

[0031] The four sides of the protective cover body 2 are provided with inclined surfaces, and the four inclined surfaces of the protective cover body 2 are matched with the cover plate 3.

[0032] When the subsequent protective cover body 2 is accidentally touched or impacted by a person, the inclined surfaces of the protective cover body 2 are first contacted, and the four mutually matched inclined parts can offset the external impact force, and the design of the inclined surfaces can make the impact force not directly concentrated in a position, but dispersed to a larger contact area through the inclined surfaces, so that the strength of the local force is reduced, and the deformation, loosening or damage of the protective cover body 2 due to sudden impact can be avoided.

[0033] The inner wall of the middle groove of the base 1 is provided with a sliding groove 506, and the sliding groove 506 is vertically and slidingly connected with a sliding seat 507

[0034] In use, first, the staff fixes the relay protection pressure plate on the movable plate 501 by using the connecting structure, then the protective cover body 2 is taken and covered on the base 1, when the protective cover body 2 is lowered, the inclined surface of the clamping strip 4 of the protective cover body 2 is in contact with and presses the inclined surface of the clamping block 505, at this time, the clamping block 505 is displaced to the middle of the groove of the side of the base 1 and presses the second spring 504, when the lower part of the protective cover body 2 is in contact with the base 1, it means that the clamping block 505 and the clamping strip 4 are out of position, at this time, the second spring 504 pushes the clamping block 505 out of the groove and blocks above the clamping strip 4, at this time, the protective cover body 2 is fixed as a whole and starts to maintain the relay protection pressure plate, when the subsequent protective cover body 2 is accidentally touched or impacted by a person, the inclined surface of the protective cover body 2 is first contacted, and the four mutually matched inclined parts can offset the external impact force, and the design of the inclined surfaces can make the impact force not directly concentrated in a position, but dispersed to a larger contact area through the inclined surfaces, so that the strength of the local force is reduced, and the deformation, loosening or damage of the protective cover body 2 due to sudden impact can be avoided, when the subsequent staff needs to maintain the relay protection pressure plate, only the cover plate 3 is opened and the movable plate 501 is pressed, at this time, the movable plate 501 is lowered and pulls the rope 503, the four ropes 503 on the four sides of the movable plate 501 simultaneously pull the four clamping blocks 505 to relatively displace, at this time, the four clamping strips 4 in the protective cover body 2 are no longer limited above, the staff can take down the protective cover body 2 to maintain the relay protection pressure plate, so that the effect of quickly disassembling and assembling the protective cover body 2 is achieved, and the staff can be effectively provided with convenience.

[0035] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A protection shield for preventing misoperation of a protection relay for a thermal power plant, characterized by comprising: Include: The protective cover body (2) and the base (1) arranged below it, the middle and edge of the base (1) are provided with grooves, the inner lower part of the protective cover body (2) is fixedly connected with the clamping strip (4); The connecting assembly (5) is arranged in the base (1); Wherein, the connecting assembly (5) includes a clamping block (505) horizontally sliding in the groove of the edge of the base (1), the clamping block (505) is matched with the clamping strip (4), one side of the clamping block (505) is fixedly connected with a rope (503), the other end of the rope (503) is fixedly connected with a movable plate (501) for fixing the relay protection plate.

2. The protection shield for preventing the misoperation of the protection panel in the thermal power plant according to claim 1, characterized in that: The movable plate (501) vertically slides in the middle groove of the base (1), the lower part of the movable plate (501) is fixedly connected with a first spring (502).

3. The protection shield for preventing the misoperation of the protection panel in the thermal power plant according to claim 1, characterized in that: The clamping block (505) is fixedly connected with a second spring (504) on one side close to the inner wall of the groove of the edge of the base (1), the other end of the second spring (504) is fixedly connected with the inner wall of the groove of the edge of the base (1).

4. The protection shield for preventing the misoperation of the protection panel in the thermal power plant according to claim 1, characterized in that: The upper part of the protective cover body (2) is designed as an opening, the opening size of the protective cover body (2) is consistent with the caliber of the middle groove of the base (1).

5. The protection shield for preventing the misoperation of the protection panel in the thermal power plant according to claim 4, characterized in that: The opening of the protective cover body (2) is hingedly connected with a cover plate (3), the cover plate (3) and the protective cover body (2) are both made of glass.

6. The protection shield for preventing the misoperation of the protection panel in the thermal power plant according to claim 1, characterized in that: The four sides of the protective cover body (2) are provided with inclined surfaces, the four inclined surfaces of the protective cover body (2) are matched with the cover plate (3).

7. The protection shield for preventing the misoperation of the protection panel in the thermal power plant according to claim 1, characterized in that: The inner wall of the middle groove of the base (1) is provided with a sliding groove (506), a sliding seat (507) is vertically and slidingly connected in the sliding groove (506), one side of the sliding seat (507) close to the movable plate (501) is fixedly connected with the movable plate (501).

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