A conveniently installed power grid closing loop relay protector

Abstract

The utility model discloses a convenient installation's electric network closes a loop and uses relay protection ware relates to relay protection ware technical field, including relay protection ware body, the outer wall of relay protection ware body is fixed with the protection shell through bolt, and one side of relay protection ware body is installed with support board, and the support board is fixedly installed in the distribution box through the inside multiple sets of bolts of its relay protection ware body, the upper and lower both ends of protection shell all are fixedly installed with installation component, and the one side bottom of support board is fixedly connected with limiting component, and the one side top of support board is fixedly connected with auxiliary frame, and the quick assembly and disassembly of relay protection ware are realized through installation component, and the bidirectional inclined surface of the plug -in block and the clamping groove can be automatically corrected position when butt -joint, need not manual fine alignment, push relay protection ware body can slide into along the inclined plane, reduce assembly difficulty, effectively relay protection ware body and the inner wall of distribution box knock, prolong the life, shorten the installation time -consuming and reduce the recessive failure risk.

Description

Technical Field

[0001] This utility model relates to the field of relay protection technology, specifically a relay protection device for convenient installation in power grid loop closing. Background Technology

[0002] The relay protection device for power grid loop closing is a key device to ensure the safety of power grid loop closing operation and operation. It can monitor parameters such as current and voltage of the loop closing line in real time. When faults such as overcurrent, short circuit, and abnormal voltage occur, it can quickly disconnect the fault circuit to prevent the fault from spreading, prevent equipment damage, and ensure the stable transition and normal operation of the power grid during the loop closing process.

[0003] Most existing power grid loop protection relays need to be installed in distribution boxes. As the core control unit of the power system, the distribution box can provide a protective shell and centralized wiring environment for the relays. However, its internal space is compact and the components are densely arranged, requiring the relays to be precisely embedded in the designated position during installation and to be compatible with the wiring terminals and fixing structure of the distribution box. However, the installation process of relay protection devices is highly dependent on manual operation. Operators need to rely on experience to hold the equipment and align it with the installation position one by one. There is a lack of automated guiding mechanism to help correct the angle. In this process, even a slight deviation will cause the equipment shell to collide with the inner wall of the distribution box, or squeeze the internal wiring terminals and lines. This may not only damage the insulation layer and cause poor contact, but also require repeated disassembly and adjustment, prolonging the installation time and increasing the risk of hidden faults.

[0004] Therefore, this utility model provides a convenient-to-install power grid loop relay protection device to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a convenient-to-install relay protection device for power grid loop closing, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A convenient-to-install power grid loop-closing relay protector includes a relay protector body, the outer wall of which is fitted with a protective shell by bolts, and a bracket plate is installed on one side of the relay protector body, and the bracket plate is used to fix the relay protector body in the distribution box by multiple sets of bolts inside the bracket plate. The protective shell has mounting components fixedly installed at both the top and bottom ends, which are used to enable quick installation and disassembly of the relay protector body. A limit component is fixedly connected to the bottom of one side of the bracket plate, which is used to guide the relay protector body to move to a designated position and lock it, so as to prevent the relay protector body from moving randomly and causing the internal cables to be squeezed. An auxiliary frame is fixedly connected to the top of one side of the bracket plate, which is used to guide the relay protector body to slide smoothly during the installation process, effectively improving the smoothness and safety of the installation and disassembly operation.

[0007] As a further embodiment of this utility model, the mounting assembly includes a mounting base, which is fixedly mounted on the outer wall of the relay protector body by bolts. A plug is fixedly mounted on the side of the mounting base away from the relay protector body, and a locking block is mounted on the end of the mounting base near the plug. The locking block has a locking groove in its inner cavity, and the locking block is engaged in the locking groove.

[0008] As a further embodiment of this utility model, a push block is slidably installed in the inner cavity of the card block, and a return spring for driving the push block is fixedly connected to one end of the push block. A protrusion for further fixing the insert block is fixedly installed on the side of the push block near the insert block.

[0009] As a further embodiment of this utility model, a cover plate is fixedly connected to one end of the card block near the insertion block by bolts, a fixing block is fixedly connected to one side of the cover plate, and clamping plates are fixedly connected to both sides of the fixing block by fixing shafts. A movable wheel is rotatably connected between the two clamping plates by a pin shaft.

[0010] As a further embodiment of this utility model, the limiting component includes a limiting frame, which is fixedly installed on one side of the support plate. A flip plate is slidably installed in the inner cavity of the limiting frame. One end of the flip plate is rotatably connected to a moving wheel via a pin, and the other end of the flip plate is fixedly connected to a locking rod for positioning the relay protector body.

[0011] As a further embodiment of this utility model, a drive rod is fixedly inserted into the inner cavity of the flip plate and is used to drive the flip plate to rotate, so that the locking rod disengages from the recessed groove, and a double-ear cap is fixedly connected to one end of the drive rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In use, this utility model enables quick assembly and disassembly of the relay protector through the installation components. The bidirectional inclined surfaces of the plug and the slot automatically correct the position during docking, eliminating the need for precise manual alignment. The relay protector body can be pushed along the inclined surface to slide in, reducing assembly difficulty and effectively preventing the relay protector body from colliding with the inner wall of the distribution box, extending its service life, shortening installation time, and reducing the risk of hidden faults. At the same time, the protrusion driven by the reset spring automatically embeds into the groove after the plug is in place, forming a tight lock. The elastic thrust resists loosening caused by vibration. In conjunction with the pressing plate and the upper and lower push blocks, the locking can be released simultaneously by pressing on one side during disassembly. With the rolling guide of the moving wheels in the slide groove, the relay protector body can be smoothly pulled out, significantly improving assembly and disassembly efficiency and reducing interface wear.

[0013] 2. In use, this utility model utilizes a limiting component to perform both guiding positioning and anti-displacement locking functions, ensuring precise fixation of the relay protector. The guide groove of the limiting frame, in conjunction with the moving wheels, constrains the movement trajectory of the relay protector body, preventing shaking and squeezing of internal cables. Combined with the linkage design of the recessed groove and the locking rod, gravity allows the locking rod to naturally embed into the groove, while the vertical surface prevents reverse sliding, achieving position locking. During disassembly, turning the double-ear cap triggers the drive rod to link the two side flip plates, causing the locking rod to simultaneously disengage from the groove. Single-sided operation can unlock the device, avoiding the cumbersome traditional double-sided independent unlocking method. This ensures safe movement of the relay protector body during maintenance and reduces the risk of cable damage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a convenient-to-install power grid loop relay protection device.

[0015] Figure 2 This is a structural exploded view of a convenient-to-install power grid loop relay protection device.

[0016] Figure 3 This is a schematic diagram of the installation components in a conveniently installed power grid loop relay protection device.

[0017] Figure 4 This is a structural exploded view of the mounting components in a conveniently installed power grid loop relay protection device.

[0018] Figure 5 This is a structural cross-sectional view of the mounting components in a conveniently installed power grid loop relay protection device.

[0019] Figure 6 This is a cross-sectional view of the limit switch component in a conveniently installed power grid loop relay protector.

[0020] In the diagram: 1. Relay protector body; 2. Protective housing; 3. Support plate; 4. Mounting components; 401. Mounting base; 402. Insert block; 403. Locking block; 404. Push block; 405. Return spring; 406. Protrusion; 407. Pressing plate; 408. Cover plate; 409. Fixing block; 410. Clamping plate; 411. Moving wheel; 412. Insert tube; 5. Limiting component; 501. Limiting frame; 502. Flip plate; 503. Locking rod; 504. Recessed groove; 505. Drive rod; 506. Double ear cap; 6. Auxiliary frame. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 , Figure 2 In this embodiment of the utility model, a convenient-to-install power grid loop-closing relay protector includes a relay protector body 1. The outer wall of the relay protector body 1 is fitted with a protective shell 2 by bolts. A bracket plate 3 is installed on one side of the relay protector body 1, and the bracket plate 3 is fixedly installed in the distribution box by multiple sets of bolts inside it. The protective shell 2 is fixedly installed with installation components 4 at both the top and bottom ends, which are used to realize the quick installation and disassembly of the relay protector body 1. The bottom end of one side of the bracket plate 3 is fixedly connected with a limit component 5, which is used to guide the relay protector body 1 to move to the designated position and lock it, so as to prevent the relay protector body 1 from moving randomly and causing the internal cables to be squeezed. The top end of one side of the bracket plate 3 is fixedly connected with an auxiliary frame 6, which is used to guide the relay protector body 1 to slide smoothly during the installation process, effectively improving the smoothness and safety of the installation and disassembly operation. It should be noted that several terminals are fixedly installed on the side of the relay protector body 1 near the bracket plate 3 to realize the signal access and power connection of the external circuit. The terminals serve as electrical connection interfaces to ensure the signal and energy transmission between the relay protector and the secondary circuit. The other side of the relay protector body 1 is equipped with operation control buttons, which can support on-site parameter setting, function debugging and operation status query, improving the ease of operation and equipment maintainability. The four sets of mounting components 4 are respectively slidably located in the limit component 5 and the auxiliary frame 6.

[0023] Please see Figure 2 , Figure 3 , Figure 4 , Figure 5The mounting component 4 includes a mounting base 401, which is fixedly mounted on the outer wall of the relay protector body 1 by bolts. A plug 402 is fixedly mounted on the side of the mounting base 401 away from the relay protector body 1. A locking block 403 is mounted on the end of the mounting base 401 near the plug 402. The inner cavity of the locking block 403 is provided with a locking groove, and the locking block 403 is engaged in the locking groove. It should be noted that the side walls of the insert 402 that fit into the slot are designed with inclined guide surfaces, and the inner wall of the slot is provided with a corresponding inclined surface in the same direction. Through the guiding cooperation of the two-way inclined surfaces, the position can be automatically corrected when the insert 402 is inserted into the slot, reducing the difficulty of manual alignment and improving assembly efficiency. At the same time, the wedge-shaped structure of the inclined surface can make the two form a tight mechanical lock after insertion, reducing lateral shaking, enhancing connection stability, avoiding loosening due to vibration and other factors, and ensuring that the relay protector body 1 is accurately positioned and evenly stressed during installation. A push block 404 is slidably installed in the inner cavity of the locking block 403. A return spring 405 for driving the push block 404 is fixedly connected to one end of the push block 404. A protrusion 406 for further fixing the insert block 402 is fixedly installed on the side of the push block 404 near the insert block 402. It should be noted that the inside of the locking block 403 is provided with a guide groove for providing lateral movement of the push block 404, and the push block 404 is located in the guide groove. The end of the return spring 405 away from the push block 404 is fixed to the inner wall of the locking block 403. The side of the insert block 402 is provided with a groove for engaging the protrusion 406. The elastic pushing force of the return spring 405 makes one end of the push block 404 always protrude from the inside of the locking block 403, and drives the protrusion 406 to pass through the locking block 403 and embed into the groove of the insert block 402, thereby achieving mechanical locking. The elastic force of the return spring 405 is used to achieve automatic engagement between the protrusion 406 and the insert block 402, ensuring stable locking of the relay protector body 1 during installation and preventing loosening due to vibration or other factors. It should also be noted that the side wall of the protrusion 406 near the insertion block 402 is provided with a guide slope that is adapted to the outer wall of the insertion block 402. The inclination angle of the slope is perfectly matched with the corresponding contact part of the insertion block 402, so that when the insertion block 402 is inserted into the card block 403, the slope of the protrusion 406 can automatically slide into the card slot along the slope of the insertion block 402 to achieve quick alignment and reduce insertion resistance. At the same time, the lateral pressure generated by the slope contact can make the protrusion 406 and the insertion block 402 form a wedge lock, which enhances the vibration resistance of the mounting component 4 and prevents the protrusion 406 from accidentally falling out due to the vibration of the relay protector body 1 during operation, thus ensuring the long-term stable connection of the relay protector body 1 in the installed state. It should also be noted that a pressing plate 407 is fixedly connected to one end of the push block 404 protruding from the locking block 403. The pressing plate 407 vertically connects the push blocks 404 on the same side of the upper and lower sets of mounting components 4. When the pressing plate 407 is pressed, the push blocks 404 on the same side synchronously compress the reset spring 405 and retract into the locking block 403, so that the protrusion 406 disengages from the groove of the insert block 402. At this time, the relay protector body 1 can be pulled directly to pull the insert block 402 out of the locking block 403, so as to facilitate the convenient disassembly of the relay protector body 1, improve the installation and maintenance efficiency, and reduce the wear and tear on the interface caused by frequent disassembly and assembly. A cover plate 408 is fixedly connected to one end of the locking block 403 near the insertion block 402 by bolts. A fixing block 409 is fixedly connected to one side of the cover plate 408. A clamping plate 410 is fixedly connected to both sides of the fixing block 409 by a fixing shaft. A moving wheel 411 is rotatably connected between the two clamping plates 410 by a pin. It should be noted that the inner cavity of the auxiliary frame 6 is provided with a sliding groove for the rolling of the movable wheel 411. The movable wheel 411 is installed in the sliding groove through a central pin, and both ends of the pin are located in the guide groove. This ensures that the movable wheel 411 can roll smoothly along the sliding groove, and also prevents the movable wheel 411 from leaving the sliding groove through the limiting effect of the pin. This effectively ensures that the relay protector body 1 is not stuck or shaken during the installation and removal process, effectively reduces the risk of poor contact caused by dragging or squeezing of internal cables, and improves the reliability of equipment installation and ease of operation. It should also be noted that the moving wheels 411 of the top mounting component 4 of the relay protector body 1 are all located in the slide groove, while the moving wheels 411 of the bottom mounting component 4 of the relay protector body 1 are all located in the limiting component 5. It should also be noted that a tube 412 is fixedly connected to one end of the cover plate 408 near the locking block 403. The tube 412 can be inserted into the preset hole of the locking block 403 to achieve preliminary positioning and temporary fixation before the bolts are tightened on the cover plate 408. This can quickly calibrate the installation position of the cover plate 408, prevent the cover plate 408 from shifting or shaking before the bolts are tightened, reduce the alignment adjustment time, and at the same time, the temporary fixation can free up the hands, facilitate the subsequent bolt installation operation, improve assembly efficiency, and ensure the accuracy of the connection between the cover plate 408 and the locking block 403.

[0024] Please see Figure 1 , Figure 6 The limiting component 5 includes a limiting frame 501, which is fixedly installed on one side of the bracket plate 3. A flip plate 502 is slidably installed in the inner cavity of the limiting frame 501. One end of the flip plate 502 is rotatably connected to the moving wheel 411 through a pin. The other end of the flip plate 502 is fixedly connected to a locking rod 503 for positioning the relay protector body 1. It should be noted that the inner cavity of the limiting frame 501 is provided with a guide groove for the sliding wheel 411 to slide, and its inner wall is provided with multiple sets of recessed grooves 504. The locking rod 503 is connected to the flip plate 502 and naturally hangs down under the action of gravity and is embedded in the recessed grooves 504, so that the flip plate 502 is kept in a downward tilted state. When the sliding wheel 411 moves along the guide groove, the locking rod 503 slides into different recessed grooves 504 in sequence. The side of each set of recessed grooves 504 near the support plate 3 is set as a vertical surface, while the other side is set as an inclined surface. When the moving lever 503 is in motion, it cooperates with the inclined surface of the recessed groove 504 to automatically give way when the moving wheel 411 slides, reducing the moving resistance. When the relay protector body 1 reaches the target position, the vertical surface, through the linkage between the lever 503 and the flip plate 502, limits the moving wheel 411, preventing the moving wheel 411 from sliding in the opposite direction due to external force or vibration, thereby accurately fixing the installation position of the relay protector body 1, avoiding its random movement that could cause internal cables to be squeezed or pulled, and improving the convenience of the installation process. A drive rod 505 is fixedly inserted into the inner cavity of the flip plate 502 and is used to drive the flip plate 502 to rotate, so that the locking rod 503 disengages from the recessed groove 504. One end of the drive rod 505 is fixedly connected to a double ear cap 506. It should be noted that the end of the drive rod 505 away from the double-ear cap 506 rotates sequentially through the center hole of the clamping plate 410 and the moving wheel 411, and is fixedly linked with the flip plate 502 in another set of limiting components 5 on the same side. The drive rod 505 forms a manual operation interface through the double-ear cap 506. When it is necessary to disassemble the relay protector body 1, the double-ear cap 506 can be turned to drive the drive rod 505 to rotate synchronously, so that the flip plates 502 on both sides flip in linkage. The locking rod 503 simultaneously disengages from the recessed groove 504, releasing the lock on the moving wheel 411. This effectively realizes the synchronous control of the limiting structure on both sides by single-sided operation, improving the disassembly efficiency. At the same time, the drive rod 505 passes through the clamping plate 410 and the moving wheel 411, which can ensure the consistency of the flipping action and prevent disassembly jamming caused by the single-sided locking rod 503 not being completely disengaged. This ensures that the relay protector body 1 can be moved safely and conveniently during maintenance, reducing the risk of damage to internal cables.

[0025] The working principle of this utility model is as follows: When using this utility model, firstly, the mounting base 401 is fixedly connected to the outer wall of the protective shell 2 by bolts, and then the protective shell 2 is fixedly connected to the relay protector body 1 by bolts. Then push the relay protector body 1 to insert the plug 402 into the slot of the card block 403. The inclined guide surfaces on both sides of the plug 402 are in contact with the inclined surfaces of the inner wall of the slot, automatically correcting the alignment deviation between the plug 402 and the slot. No manual precise alignment is required, reducing the difficulty of installation. At the same time, during the insertion of the plug 402, the outer wall of the plug 402 will contact the guide slope of the protrusion 406 in the card block 403, so that the thrust of the plug 402 is converted into a lateral force along the slope, which in turn pushes the protrusion 406 and the connected push block 404 to compress the reset spring 405, so that the protrusion 406 retracts into the guide groove of the card block 403. At this time, the plug 402 can be smoothly inserted into the deep part of the slot. When the insert 402 is fully inserted, the groove on its side wall aligns with the position of the protrusion 406. The push block 404 is reset under the elastic force of the return spring 405, which drives the protrusion 406 to pass through the locking block 403 and embed into the groove of the insert 402, forming a mechanical lock, effectively reducing lateral sway and preventing the insert 402 from coming out due to vibration. Subsequently, the relay protector body 1 is pushed to move, allowing the moving wheel 411 to slide along the guide groove of the limit frame 501 to the target position. The locking rod 503 of the flip plate 502 hangs down naturally under gravity and is embedded in the recessed groove 504 on the inner wall of the limit frame 501. Since the side of the recessed groove 504 closest to the bracket plate 3 is a vertical surface and the other side is an inclined surface, when the locking rod 503 is embedded in the recessed groove 504, the vertical surface can prevent the locking rod 503 from moving in the opposite direction, restricting the moving wheel 411 from sliding in the opposite direction along the guide groove, thereby fixing the installation position of the relay protector body 1, avoiding the internal cables from being pulled or squeezed due to accidental contact, and ensuring the stable connection between the wiring terminals and the external circuit. Finally, during disassembly, first turn the double-ear cap 506 of the limiting component 5 to rotate the drive rod 505, which in turn drives the two side flip plates 502 to flip, causing the locking rod 503 to disengage from the recessed groove 504 of the limiting frame 501 and releasing the sliding restriction on the moving wheel 411. Then, by pressing the pressing plate 407 of the mounting component 4, the vertical push block 404 on the same side is compressed synchronously by the pressure, and the return spring 405 is compressed, which drives the protrusion 406 to retract from the groove of the insert block 402 into the locking block 403, thereby releasing the lock and making the insert block 402 and the locking block 403 free from obstruction. After the double lock is released, the operator pulls the relay protector body 1 with one hand and pushes the pressing plate 407 in the opposite direction while turning the double ear cap 506 with the other hand. This allows the moving wheel 411 to roll smoothly along the slide groove of the auxiliary frame 6 and the guide groove of the limiting component 5, so that the vertical single-sided insertion block 402 can be smoothly pulled out from the slot of the locking block 403. The above operation is repeated so that the vertical other side insertion block 402 can also be smoothly pulled out from the slot of the locking block 403, thus completing the disassembly.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A conveniently installed power grid loop-closing relay protection device, comprising a relay protection device body (1), characterized in that, The outer wall of the relay protector body (1) is fitted with a protective shell (2) by bolts. A bracket plate (3) is installed on one side of the relay protector body (1), and the bracket plate (3) fixes the relay protector body (1) in the distribution box by multiple sets of bolts inside it. The protective shell (2) is fixedly installed with installation components (4) at both the upper and lower ends, and is used to realize the quick installation and disassembly of the relay protector body (1). The bottom of one side of the bracket plate (3) is fixedly connected with a limit component (5), which is used to guide the relay protector body (1) to move to a designated position and lock it, so as to prevent the relay protector body (1) from moving randomly and causing the internal cables to be squeezed. The top of one side of the bracket plate (3) is fixedly connected with an auxiliary frame (6) for guiding the relay protector body (1) to slide smoothly during the installation process, which effectively improves the smoothness and safety of the installation and disassembly operation.

2. The convenient-to-install power grid loop-closing relay protection device according to claim 1, characterized in that, The mounting assembly (4) includes a mounting base (401), which is fixedly mounted on the outer wall of the relay protector body (1) by bolts. A plug (402) is fixedly mounted on the side of the mounting base (401) away from the relay protector body (1). A locking block (403) is mounted on the end of the mounting base (401) near the plug (402). The locking block (403) has a locking groove in its inner cavity and the locking block (403) is engaged in the locking groove.

3. A conveniently installed power grid loop-closing relay protection device according to claim 2, characterized in that, The inner cavity of the card block (403) is slidably fitted with a push block (404), and one end of the push block (404) is fixedly connected with a reset spring (405) for driving the push block (404). A protrusion (406) for further fixing the insert block (402) is fixedly installed on the side of the push block (404) near the insert block (402).

4. A conveniently installed power grid loop-closing relay protection device according to claim 2, characterized in that, The end of the card block (403) near the insertion block (402) is fixedly connected to a cover plate (408) by bolts. A fixing block (409) is fixedly connected to one side of the cover plate (408). Both sides of the fixing block (409) are fixedly connected to clamps (410) by fixing shafts. A movable wheel (411) is rotatably connected between the two clamps (410) by a pin shaft.

5. A conveniently installed power grid loop-closing relay protection device according to claim 1, characterized in that, The limiting component (5) includes a limiting frame (501), which is fixedly installed on one side of the support plate (3). A flip plate (502) is slidably installed in the inner cavity of the limiting frame (501). One end of the flip plate (502) is rotatably connected to the moving wheel (411) through a pin. The other end of the flip plate (502) is fixedly connected to a locking rod (503) for positioning the relay protector body (1).

6. A conveniently installed power grid loop-closing relay protection device according to claim 5, characterized in that, The inner cavity of the flip plate (502) is fixedly connected to a drive rod (505), which is used to drive the flip plate (502) to rotate, so that the locking rod (503) disengages from the recessed groove (504). One end of the drive rod (505) is fixedly connected to a double ear cap (506).

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