A relay protection operation blocking device

Abstract

This utility model discloses a relay protection operation sealing device, relating to the field of operation protection tools. Addressing the current problem of inconvenient operation of relay protection in secondary circuits, the device includes a fixed plate, a movable plate, and a reel. The reel includes a reel cylinder, a rotating shaft, and a sealing strip. The reel cylinder is rotatably sleeved on the rotating shaft, and a torsion spring connects the reel cylinder and the rotating shaft. One end of the sealing strip is wound onto the reel cylinder, and the other end is connected to the fixed plate. The sealing strip is an insulating strip, designed for retraction. The fixed plate, in conjunction with a terminal block, fixes one end of the sealing strip. As the movable plate moves to a designated position as needed, it pulls the sealing strip, releasing it from the reel cylinder. This allows the sealing strip to block areas that should not be touched or operated. The movable plate and fixed plate utilize connecting posts to achieve a detachable connection with the terminal block, meeting the requirements for rapid installation and removal.

Description

Technical Field

[0001] This utility model relates to the field of work protection tools, and in particular to a relay protection work blocking device. Background Technology

[0002] Relay protection safety measures are an important part of the operation of the secondary circuit of relay protection and automatic safety devices. When working on relay protection, automatic safety devices and their secondary circuits or related primary equipment, isolation measures should be taken to prevent personal injury, power grid or equipment safety accidents, such as secondary circuit disconnection, short circuit, grounding, removal, connection, insulation sealing and other technical measures.

[0003] In power plant secondary circuit operations, insulating tape is typically used to seal and isolate terminals, pressure plates, circuit breakers, handles, devices, and components that are not allowed to be touched or have their states altered during operation. However, due to negligence or lack of technical expertise among staff during the sealing process, terminals may not be sealed properly or may be missed, leading to misoperation and potentially more serious accidents. Utility Model Content

[0004] The purpose of this utility model is to address the deficiencies of existing technologies by providing a relay protection operation sealing device. It features a retractable sealing strip, with a fixed plate and terminal blocks securing one end of the strip. As the movable plate moves to a designated position, it pulls the sealing strip, releasing it from the reel. This allows the sealing strip to cover areas that should not be touched or operated. The movable plate and fixed plate are connected by connecting posts for detachable engagement with the terminal blocks, meeting the requirements for rapid installation and removal.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] A relay protection operation sealing device includes a fixed plate, a movable plate, and a reel. The reel includes a reel cylinder, a rotating shaft, and a sealing strip. The reel cylinder is rotatably sleeved on the rotating shaft, and a torsion spring is connected between the reel cylinder and the rotating shaft. One end of the sealing strip is wound onto the reel cylinder, and the other end is connected to the fixed plate. The sealing strip is an insulating strip. Both ends of the rotating shaft are respectively installed on the movable plate. The fixed plate and the movable plate are respectively provided with connecting posts for connecting terminal blocks. The connecting posts on the fixed plate and the movable plate are connected to different positions of the terminal blocks.

[0007] Furthermore, a support base is installed on the movable plate, and both ends of the rotating shaft are installed on the support base through bushings.

[0008] Furthermore, the rotating shaft is provided with limiting rings, and two limiting rings are arranged at intervals along the rotating shaft axis, with the roller drum located between the two limiting rings.

[0009] Furthermore, the torsion spring is sleeved on the rotating shaft, with one end of the torsion spring fixed to the rotating shaft and the other end connected to the reel drum to follow the rotation of the reel drum relative to the rotating shaft.

[0010] Furthermore, the fixed plate is provided with a magnetic attraction element on the side facing the movable plate, and the movable plate is also provided with a magnetic attraction element on the side facing the fixed plate. The magnetic attraction elements on the fixed plate and the movable plate can be magnetically attracted.

[0011] Furthermore, along the axis of rotation, the movable plate is provided with multiple magnetic elements spaced apart, and the magnetic elements on the fixed plate are attached to the magnetic elements on the movable plate one by one.

[0012] Furthermore, the sealing strip is a flexible strip, and warning signs are provided on the sealing strip.

[0013] Furthermore, the fixed plate and the movable plate are respectively provided with sliding grooves, and the connecting column includes an adjusting column and a fixed column. The adjusting column is slidably engaged with the sliding groove, and the fixed column is fixed to the fixed plate or the movable plate.

[0014] Furthermore, one end of the adjusting column is a connecting end of a connecting terminal block, and the other end is provided with a slider, which slides in conjunction with the sliding groove.

[0015] Furthermore, one end of the fixed column is fixed to the movable plate or the fixed plate, and the other end forms a connecting end. The adjusting column moves along the sliding groove to change the distance between the adjusting column and the fixed column.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention addresses the problem of inconvenient operation of relay protection in secondary circuits by incorporating a retractable sealing strip. A fixed plate, in conjunction with a terminal block, secures one end of the sealing strip. As the movable plate moves to a designated position, it pulls the sealing strip, releasing it from the reel. This allows the sealing strip to cover areas that should not be touched or operated. The movable plate and fixed plate utilize connecting posts for detachable engagement with the terminal block, meeting the requirements for rapid installation and removal.

[0018] In this invention, an adjusting column is configured in the connecting column of the fixed plate and the movable plate. The adjusting column can change the distance between itself and the fixed column by sliding, thereby adapting to different terminal block connection position distances and improving applicability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the relay protection operation blocking device in an embodiment of this utility model.

[0020] Figure 2 This is a schematic diagram of the adjusting column and the fixing column installed on the movable plate in an embodiment of this utility model.

[0021] Figure 3 This is a schematic diagram of the adjusting column and the fixing column installed on the fixing plate in an embodiment of this utility model.

[0022] Figure 4 This is a schematic diagram showing the relative positions of the adjusting column and the fixing column in an embodiment of this utility model.

[0023] Labeling descriptions (in order of first appearance): 1. Movable plate, 2. Support base, 3. Limiting ring, 4. Rotary shaft, 5. Reel, 6. Torsion spring, 7. Sealing strip, 8. Bushing, 9. Fixed plate, 10. Magnetic element, 11. Slide groove, 12. Adjusting column, 13. Fixed column. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figures 1-4 As shown, this embodiment addresses the inconvenience of relay protection operation in the secondary circuit of power plants by providing a relay protection operation blocking device. This device is used in power systems, especially during relay protection operations, to protect equipment in areas where touch or operation is prohibited from misoperation or damage. The relay protection operation blocking device achieves temporary shielding of a specific area by retracting and releasing the blocking tape 7, thereby ensuring operational safety.

[0026] like Figure 1 As shown, the relay protection operation blocking device mainly consists of three parts: a fixed plate 9, a movable plate 1, and a roller 5.

[0027] The fixing plate 9 is used to fix one end of the sealing tape 7 and connects to the terminal block. As a structure for connecting the terminal block, the fixing plate 9 can establish a connection with the terminal block through the connecting posts set on it, thereby stabilizing the position of the fixing plate 9 and ensuring the stability of the sealing tape 7 during the release and rewinding process.

[0028] The movable plate 1 can move relative to the fixed plate 9. When it moves to a designated position, the sealing strip 7 is released from the reel by pulling it. The sealing strip 7 can block areas that are not allowed to be touched or operated. By adjusting the position of the movable plate 1, the release length of the sealing strip 7 can be adjusted, allowing for flexible movement to adapt to different operational needs.

[0029] The reel 5 includes a reel drum, a rotating shaft 4, and a sealing strip 7. One end of the sealing strip 7 is wound onto the reel drum, and the other end is connected to a fixing plate 9. The reel drum is rotatably mounted on the rotating shaft 4, and a torsion spring 6 is connected between the reel drum and the rotating shaft 4. The torsion spring 6 can accumulate torsional elasticity when the sealing strip 7 is released from the reel drum. After the external force is removed, the sealing strip 7 is wound back onto the reel drum under the rebound action of the torsion spring 6, making it convenient for the next use.

[0030] The sealing tape 7 uses a flexible insulating strip, ensuring safety in power systems while also meeting winding requirements. The insulating strip prevents current flow, avoiding short circuits or electric shocks caused by misoperation.

[0031] The two ends of the rotating shaft 4 are respectively installed on the movable plate 1, and the roller is rotated and sleeved on the rotating shaft 4, so that the sealing strip 7 can be released or wound up as the movable plate 1 moves. The addition of the torsion spring 6 ensures that the sealing strip 7 can be wound back onto the roller after being released, thus improving the efficiency of use.

[0032] Both the fixed plate 9 and the movable plate 1 are equipped with connecting posts for connecting terminal blocks. These connecting posts allow the device to be detachably fitted to the terminal blocks, meeting the requirements for quick installation and removal. Furthermore, the connecting posts on the fixed plate 9 and the movable plate 1 are connected to different positions on the terminal blocks, allowing them to be fixed in different locations on the terminal blocks, thus enhancing the stability and reliability of the device.

[0033] By using insulating strips as the sealing tape 7, short circuits or electric shock accidents caused by misoperation in the power system are avoided, improving operational safety. The design of the movable plate 1 allows the sealing tape 7 to be flexibly released or retracted as needed, adapting to different operational requirements. The design of the connecting column enables detachable connection between the device and the terminal block, meeting the requirements for rapid installation and removal, and improving operational convenience.

[0034] like Figure 1 As shown, the movable plate 1 is equipped with a support base 2 for fixing the rotating shaft 4. This enhances the stability of the rotating shaft 4 and prevents malfunctions caused by the shaking of the rotating shaft 4 during the release or rewinding of the sealing tape 7. Both ends of the rotating shaft 4 are mounted to the support base 2 via bushings 8, which improves the stability of the installation between the rotating shaft 4 and the support base 2 and extends its service life.

[0035] A limiting ring 3 is provided on the rotating shaft 4, and two limiting rings 3 are arranged at intervals along the axial direction of the rotating shaft 4, with the reel drum located between the two limiting rings 3. This limits the range of movement of the reel drum on the rotating shaft 4, preventing the reel drum from falling off or being damaged due to excessive movement during rotation.

[0036] A torsion spring 6 is sleeved on the rotating shaft 4, with one end fixed to the shaft 4 and the other end connected to the reel. During the release of the sealing tape 7, the reel rotates around the shaft 4, thereby causing one end of the torsion spring 6 to rotate and accumulate elastic force. When the sealing tape 7 needs to be wound up, the torsion spring 6 releases its elastic force and rotates in the opposite direction, thereby causing the reel to rotate in the opposite direction around the shaft 4, winding the sealing tape 7 onto the reel. At the same time, the elastic force of the torsion spring 6 also ensures the stability of the sealing tape 7 during the release process.

[0037] Both the fixed plate 9 and the movable plate 1 are equipped with magnetic elements 10, enabling magnetic attraction. This allows for quick connection and separation between the fixed plate 9 and the movable plate 1. When connected, the fixed plate 9 and the movable plate 1 maintain relatively stable positions, facilitating storage. During use, the magnetic attraction force of the magnetic elements 10 overcomes the attraction force, allowing the fixed plate 9 and the movable plate 1 to separate, thus improving the convenience of the device. Simultaneously, the magnetic attraction also enhances the stability between the fixed plate 9 and the movable plate 1.

[0038] Along the axis of the rotating shaft 4, the movable plate 1 is provided with a plurality of magnetic attraction elements 10 spaced apart. The magnetic attraction elements 10 on the fixed plate 9 correspond one-to-one with the magnetic attraction elements 10 on the movable plate 1, thereby enhancing the connection stability between the fixed plate 9 and the movable plate 1. In this embodiment, the magnetic attraction elements 10 can be magnets or a combination of magnets and magnetic attracting sheets. Magnets are installed on the fixed plate 9 and the movable plate 1 respectively as magnetic attraction elements 10, and the magnets on the fixed plate 9 and the movable plate 1 attract each other; or magnets are installed on the fixed plate 9 as magnetic attraction elements 10, and magnetic attracting sheets are installed on the movable plate 1 as magnetic attraction elements 10, so that the movable plate 1 and the fixed plate 9 can be detachably connected by the attraction of the magnetic attracting sheets by the magnets.

[0039] The sealing tape 7 is a flexible tape, allowing it to be bent and conform to areas of different shapes. It also features warning labels to remind operators to pay attention to safety and comply with regulations. These warning labels can be printed text, standard warning signs, etc.

[0040] like Figure 2 , Figure 3 and Figure 4 As shown, the fixed plate 9 and the movable plate 1 are respectively provided with sliding grooves 11, and the connecting columns include adjusting columns 12 and fixed columns 13. The adjusting column 12 is slidably engaged with the sliding groove 11, and the fixed column 13 is fixed to the fixed plate 9 or the movable plate 1. The spacing of the connecting columns can be adjusted within a certain range to adapt to the different spacing requirements of the connecting columns at different terminal block installation positions.

[0041] One end of the adjusting column 12 is a connection end of the terminal block, and the other end is equipped with a slider, which slides in engagement with the slide groove 11. This allows the adjusting column 12 to move easily along the slide groove 11 to change its distance from the fixed column 13.

[0042] One end of the fixed column 13 is fixed to the movable plate 1 or the fixed plate 9, and the other end forms a connecting end. The adjusting column 12 moves along the slide groove 11 to change the distance between the adjusting column 12 and the fixed column 13. This improves the flexibility of adjusting the distance.

[0043] By adding support base 2 and bushing 8, and setting limit ring 3, the stability of the device is enhanced, preventing malfunctions caused by shaking or excessive movement. The introduction of magnetic element 10 and slide groove 11 with connecting column improves the convenience of the device, making the connection and separation between fixed plate 9 and movable plate 1 faster and more convenient.

[0044] By optimizing the material of the sealing strip 7, setting warning signs, and providing flexibility in adjusting the spacing, the practicality of the device has been enhanced, enabling it to adapt to different working environments and needs.

[0045] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.

Claims

1. A relay protection operation plugging device, characterized in that, The device includes a fixed plate, a movable plate, and a reel. The reel includes a reel cylinder, a rotating shaft, and a sealing strip. The reel cylinder is rotatably mounted on the rotating shaft, and a torsion spring connects the reel cylinder and the rotating shaft. One end of the sealing strip is wound onto the reel cylinder, and the other end is connected to the fixed plate. The sealing strip is an insulating strip. Both ends of the rotating shaft are respectively installed on the movable plate. The fixed plate and the movable plate are respectively provided with connecting posts for connecting terminal blocks. The connecting posts on the fixed plate and the connecting posts on the movable plate are connected to different positions of the terminal blocks. The fixed plate is provided with a magnetic attraction element on the side facing the movable plate, and the movable plate is also provided with a magnetic attraction element on the side facing the fixed plate. The magnetic attraction elements on the fixed plate and the movable plate can be magnetically attracted. Along the axis of rotation, the movable plate is provided with multiple magnetic elements spaced apart, and the magnetic elements on the fixed plate are attached to the magnetic elements on the movable plate one by one. The fixed plate and the movable plate are respectively provided with sliding grooves, and the connecting column includes an adjusting column and a fixed column. The adjusting column is slidably engaged with the sliding groove, and the fixed column is fixed to the fixed plate or the movable plate.

2. The relay protection operation blocking device according to claim 1, wherein The movable plate is equipped with a support base, and both ends of the rotating shaft are installed on the support base through bushings.

3. The relay protection job plugging device according to claim 1 or 2, characterized in that, The rotating shaft is provided with two limiting rings, which are arranged at intervals along the shaft axis, and the roller is located between the two limiting rings.

4. The relay protection operation blocking device according to claim 3, wherein The torsion spring is sleeved on the rotating shaft, with one end fixed to the rotating shaft and the other end connected to the reel drum to follow the rotation of the reel drum relative to the rotating shaft.

5. The relay protection job plugging device according to claim 1, wherein, The sealing strip is a flexible strip, and warning signs are provided on the sealing strip.

6. The relay protection job plugging device according to claim 2, wherein, One end of the adjusting column is the connection end of the connecting terminal block, and the other end is provided with a slider, which slides in conjunction with the sliding groove.

7. The relay protection job plugging device according to claim 6, wherein, One end of the fixed column is fixed to the movable plate or the fixed plate, and the other end forms a connecting end. The adjusting column moves along the slide groove to change the distance between the adjusting column and the fixed column.

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