A relay protection test device

Abstract

The utility model provides a relay protection test device, including a main body mechanism and a limiting mechanism; the main body mechanism includes a protective shell and a test instrument, an inner side of the protective shell is fixedly connected to a load-bearing plate, and the test instrument is arranged on one side of the load-bearing plate; the limiting mechanism includes a cover plate and a limiting frame, the limiting frame is fixedly connected to one side of the cover plate, the cover plate is hinged to the protective shell, one side of the cover plate is fixedly connected to a supporting frame, one side of the load-bearing plate is symmetrically fixedly connected to a fixing frame, and one side of the fixing frame is fixedly connected to the limiting plate; the utility model sets a cover plate to cooperate with the limiting frame and the supporting frame to limit the test instrument after closing the cover plate, and cooperates with the fixing frame and the limiting plate to fix the position of the test instrument without additional fixing operation, and automatically completes the installation and fixing of the test instrument when the cover plate is closed, and opens the cover plate to release the fixing of the test instrument, so that the test instrument can be quickly disassembled when the test instrument is abnormal.

Description

Technical Field

[0001] The utility model relates to a test device, in particular to a relay protection test device, belonging to the technical field of relay protection tests. Background Art

[0002] Relay protection is an important measure that detects faults or abnormal conditions in the power system, thereby issuing an alarm signal or directly isolating and removing the faulty part. It studies power system faults and abnormal operating conditions that endanger safe operation, and explores countermeasures and automated anti-accident measures. Because contact relays were mainly used to protect power systems and their components (generators, transformers, transmission lines, etc.) from damage during its development, it is also called relay protection. Its basic task is: when a fault or abnormal operating condition occurs in the power system, it automatically removes the faulty equipment from the system in the shortest possible time and smallest area, or sends a signal to the on-duty personnel to eliminate the root cause of the abnormal condition, thereby reducing or avoiding damage to the equipment and the impact on power supply to adjacent areas. Relay protection devices must be able to correctly distinguish whether the protected component is in normal operation or has a fault, and whether the fault is within the protected area or outside the protected area. To achieve this function, the protection device needs to be constructed based on the characteristics of the changes in electrical physical quantities before and after the power system fault occurs.

[0003] China's public patent (CN202020548832.8) discloses a convenient relay protection test device. When in use, the relay protection tester can be placed on the support plate through the mounting hole, and then the relay protection tester can be fixed on the support plate through the fixing assembly, and the front of the relay protection tester is aligned with the box door. In this way, the box body can be directly moved. When in use, the limit of the box door is released by the automatic spring latch, and the front of the relay protection tester is exposed by rotating the box door for use. However, when disassembling and assembling the tester, the application still requires additional fixing components to fix the position of the tester, and additional disassembly operations are required when disassembling and assembling the tester. It is not convenient to quickly disassemble and assemble the tester when it is abnormal, and the tester needs to be disassembled for wiring when using it, which is inconvenient to operate.

[0004] In order to solve the above technical problems, a relay protection test device is proposed. Utility Model Content

[0005] In view of this, the present invention provides a relay protection test device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0006] The technical solution of the utility model is implemented as follows: a relay protection test device includes a main body mechanism and a limit mechanism;

[0007] The main body mechanism includes a protective shell and a tester, wherein a supporting plate is fixedly connected to one side of the inner side of the protective shell, and the tester is arranged on one side of the supporting plate;

[0008] The limiting mechanism includes a cover plate and a limiting frame, the limiting frame is fixedly connected to one side of the cover plate, the cover plate is hinged to the protective shell, one side of the cover plate is fixedly connected to a support frame, one side of the load-bearing plate is symmetrically fixedly connected to a fixing frame, one side of the fixing frame is fixedly connected to the limiting plate, the inner side of the protective shell is fixedly connected to a fixing plate, one side of the cover plate is symmetrically threaded with a bolt, and one end of the bolt is threadedly connected to the fixing plate.

[0009] Further preferably, a connecting frame is provided on one side of the interior of the protective shell, four rollers are installed on one side of the connecting frame, a driving motor is installed on one side of the supporting plate, the output shaft of the driving motor is fixedly connected to a screw, one end of the screw passes through the connecting frame, one end of the screw is rotatably connected to the protective shell, and the screw passes through one side of the connecting frame and is threadedly connected to the connecting frame.

[0010] Further preferably, guide rails are symmetrically installed inside the protective shell, and the movable ends of the guide rails are fixedly connected to the connecting frame.

[0011] Further preferably, heat dissipation holes are evenly distributed on both sides of the protective shell.

[0012] Further preferably, first magnetic blocks are symmetrically fixedly connected to both sides of the protective shell, and a dustproof net is provided on one side of the first magnetic block.

[0013] Further preferably, an observation window is installed on one side of the cover plate.

[0014] Further preferably, a baffle is slidably mounted on one side of the protective shell, third magnetic blocks are fixedly connected to both sides of the baffle, and a second magnetic block is symmetrically fixedly connected to one side of the protective shell.

[0015] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0016] First, the utility model sets a cover plate to cooperate with the limit frame and the support frame to limit the position of the tester after the cover is closed, and cooperates with the fixing frame and the limit plate to fix the position of the tester. No additional fixing operation is required. The installation and fixation of the tester are automatically completed when the cover is closed. The fixation of the tester is released when the cover is opened, which is convenient for quick removal of the tester in case of abnormality.

[0017] Second, the present invention shields and protects the wiring part of the tester by setting a baffle. When using the tester, the wiring operation can be performed by sliding the baffle without taking out the tester for use.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a bottom view of the structure of the utility model;

[0022] Figure 3 This is the installation structure diagram of the dustproof net in this utility model;

[0023] Figure 4 This is a diagram showing the connection structure of the cover plate in the present utility model;

[0024] Figure 5 This is a diagram of the internal structure of the protective shell in the present utility model;

[0025] Figure 6 This is a diagram of the connection structure of the load-bearing plate in the present utility model;

[0026] Figure 7 This is the installation structure diagram of the baffle in the utility model.

[0027] Figure numerals: 10, main body; 11, protective shell; 12, dustproof net; 13, roller; 14, connecting frame; 15, fixing plate; 16, bearing plate; 17, tester; 18, first magnetic block; 19, heat dissipation hole; 20, limiting mechanism; 21, cover plate; 22, bolt; 23, observation window; 24, fixing frame; 25, limiting plate; 26, limiting frame; 27, supporting frame; 31, baffle; 32, driving motor; 33, screw; 34, guide rail; 35, second magnetic block; 36, third magnetic block. DETAILED DESCRIPTION

[0028] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] like Figure 1-7 As shown, an embodiment of the present utility model provides a relay protection test device, which is composed of a main body mechanism 10 and a limiting mechanism 20.

[0031] The main body mechanism 10 includes a protective shell 11, a tester 17 and a baffle 31. A supporting plate 16 is fixedly connected to one side of the inner part of the protective shell 11. The supporting plate 16 is used to separate the internal space of the protective shell 11 and provide support for the tester 17. The tester 17 is arranged on one side of the supporting plate 16. The baffle 31 is slidably installed on one side of the protective shell 11. The third magnetic block 36 is fixedly connected to both sides of the baffle 31. The second magnetic block 35 is symmetrically fixedly connected to one side of the protective shell 11. The position of the baffle 31 is fixed by the second magnetic block 35 adsorbing the third magnetic block 36. The wiring point of the tester 17 is shielded and protected by the baffle 31. When needed, the baffle 31 is slid so that it no longer blocks the wiring point, which facilitates wiring operations and does not require taking out the tester 17 for wiring.

[0032] In one embodiment, in order to facilitate the movement of the test device, a connecting frame 14 is provided on one side of the interior of the protective shell 11, four rollers 13 are installed on one side of the connecting frame 14, and a driving motor 32 is installed on one side of the load-bearing plate 16. The output shaft of the driving motor 32 is fixedly connected to a screw 33, one end of the screw 33 passes through the connecting frame 14, and one end of the screw 33 is rotatably connected to the protective shell 11. The screw 33 passes through one side of the connecting frame 14 and is threadedly connected to the connecting frame 14. The screw 33 is driven to rotate by the driving motor 32, so that the screw 33 drives the connecting frame 14 to rise and fall, so that the roller 13 contacts the ground, which facilitates moving the present invention to a designated position. Guide rails 34 are symmetrically installed inside the protective shell 11, and the movable ends of the guide rails 34 are fixedly connected to the connecting frame 14. The provision of the guide rails 34 enhances the stability of the connecting frame 14 during movement.

[0033] In one embodiment, in order to facilitate the discharge of heat inside the protective shell 11, heat dissipation holes 19 are evenly distributed on both sides of the protective shell 11, and first magnetic blocks 18 are symmetrically fixedly connected on both sides of the protective shell 11. A dustproof net 12 is provided on one side of the first magnetic block 18. The dustproof net 12 is used to protect the heat dissipation holes 19 from dust, preventing dust from entering the protective shell 11 through the heat dissipation holes 19.

[0034] The limiting mechanism 20 includes a cover plate 21, a fixing frame 24 and a limiting frame 26. The limiting frame 26 is fixedly connected to one side of the cover plate 21. The cover plate 21 is hinged to the protective shell 11. One side of the cover plate 21 is fixedly connected to a support frame 27. The fixing frame 24 is symmetrically fixedly connected to one side of the load-bearing plate 16. One side of the fixing frame 24 is fixedly connected to a limiting plate 25. The fixing frame 24 and the limiting plate 25 contact the tester 17 to limit the tester 17 and prevent the tester 17 from sliding inside the protective shell 11. The support frame 27 and the limiting frame 26 on one side of the cover plate 21 contact the tester 17 when the cover plate 21 is closed to fix the tester 17 and quickly install the tester 17 inside the protective shell 11. The inner side of the protective shell 11 is fixedly connected to the fixing plate 15. One side of the cover plate 21 is symmetrically threaded with a bolt 22. One end of the bolt 22 is threadedly connected to the fixing plate 15. The bolt 22 cooperates with the fixing plate 15 to fix the position of the cover plate 21.

[0035] In one embodiment, in order to facilitate observation of the use status of the tester 17 , an observation window 23 is installed on one side of the cover 21 .

[0036] When the utility model is in operation, the cover 21 is opened, the tester 17 is placed in the protective shell 11, the bottom surface of the tester 17 contacts the load plate 16, the two sides contact the fixing frame 24, the front and back sides contact the limit plate 25 and the inner wall of the protective shell 11 respectively, the cover 21 is closed, the limit frame 26 contacts the tester 17, and the support frame 27 contacts the tester 17 at the same time, the tester 17 is fixed in the protective shell 11, the bolt 22 is turned so that one end of the bolt 22 is connected to the fixing plate 15, and the position of the cover 21 is fixed. The installation of the tester 17 can be completed. The screw 33 is driven to rotate by the driving motor 32, so that the connecting frame 14 drives the roller 13 to contact the ground, and the test device is moved by the roller 13. When using the tester 17, slide the baffle 31 upward to make the second magnetic block 35 absorb the third magnetic block 36, and fix the position of the baffle 31 so that the baffle 31 no longer blocks the wiring of the tester 17. When the tester 17 is abnormal, turn the bolt 22, open the cover 21, and pull the tester 17 upward to quickly remove the tester 17.

[0037] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A relay protection test device, characterized in that: It comprises a main body mechanism (10) and a limiting mechanism (20); The main body mechanism (10) comprises a protective shell (11) and a tester (17); a carrying plate (16) is fixedly connected to one side of the interior of the protective shell (11); and the tester (17) is arranged on one side of the carrying plate (16); The limiting mechanism (20) comprises a cover plate (21) and a limiting frame (26), wherein the limiting frame (26) is fixedly connected to one side of the cover plate (21), the cover plate (21) is hinged to the protective shell (11), one side of the cover plate (21) is fixedly connected to a support frame (27), one side of the bearing plate (16) is symmetrically fixedly connected to a fixing frame (24), one side of the fixing frame (24) is fixedly connected to a limiting plate (25), one side of the interior of the protective shell (11) is fixedly connected to a fixing plate (15), one side of the cover plate (21) is symmetrically threadedly connected to a bolt (22), one end of the bolt (22) is threadedly connected to the fixing plate (15).

2. A relay protection test device according to claim 1, characterized in that: A connecting frame (14) is provided on one side of the interior of the protective shell (11), four rollers (13) are installed on one side of the connecting frame (14), a driving motor (32) is installed on one side of the carrying plate (16), an output shaft of the driving motor (32) is fixedly connected to a screw rod (33), one end of the screw rod (33) passes through the connecting frame (14), one end of the screw rod (33) is rotatably connected to the protective shell (11), and the screw rod (33) passes through one side of the connecting frame (14) and is threadedly connected to the connecting frame (14).

3. A relay protection test device according to claim 2, characterized in that: A guide rail (34) is symmetrically installed inside the protective shell (11), and a movable end of the guide rail (34) is fixedly connected to the connecting frame (14).

4. A relay protection test device according to claim 1, characterized in that: Heat dissipation holes (19) are evenly distributed on both sides of the protective shell (11).

5. A relay protection test device according to claim 1, characterized in that: The first magnetic blocks (18) are symmetrically fixedly connected to both sides of the protective shell (11), and a dustproof net (12) is provided on one side of the first magnetic block (18).

6. A relay protection test device according to claim 1, characterized in that: An observation window (23) is installed on one side of the cover plate (21).

7. A relay protection test device according to claim 1, characterized in that: A baffle (31) is slidably mounted on one side of the protective shell (11), third magnetic blocks (36) are fixedly connected to both sides of the baffle (31), and a second magnetic block (35) is symmetrically fixedly connected to one side of the protective shell (11).

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