Transformer voltage measuring instrument with isolation protection structure

Abstract

The utility model discloses a transformer voltage measuring instrument with an isolation protection structure, which comprises a protection box, a plurality of supports and a box cover, a soft cushion is arranged on the inner wall of the protection box, a plurality of buffer strips are arranged on the surface of the soft cushion, measuring instruments contacted with the buffer strips are arranged in the protection box, and the supports are arranged on the bottom surface of the protection box. A rubber column is fixedly connected into the support, a plurality of annularly-arranged buffer holes are formed in the surface of the rubber column, an assembly rod is connected to the middle of the rubber column and connected with the bottom of the measuring instrument, the box cover is rotationally connected with the protection box, and a transparent plate is arranged in the middle of the surface of the box cover. The inner walls of the periphery of the protection box are doubly released through the buffer strips and the soft cushions, the soft cushions can lighten impact force borne by the measuring instrument, the intervals between the buffer strips reserve spaces for deformation and energy absorption of the buffer strips, double protection of the measuring instrument is achieved, the measuring instrument is not prone to being damaged when the protection box is impacted, and the measuring instrument can be prevented from being damaged even if the protection box accidentally falls on the ground.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer measurement, in particular to a transformer voltage measuring instrument with an isolation protection structure. Background Art

[0002] The low-voltage short-circuit impedance test is the most direct method to check whether the windings of a transformer are deformed after being impacted by a short-circuit current during operation or after being hit by mechanical force during transportation and installation. It is of great significance for determining whether the transformer can be put into operation and is also one of the bases for determining whether the transformer requires disassembly inspection.

[0003] In the related technology, a search found a scheme of a transformer low-voltage short-circuit impedance sweep frequency tester (Announcement No. CN210465545U). Through the low-voltage short-circuit impedance sweep frequency test method, the sweep frequency tester can measure the transformer, and cooperate with the handheld terminal to control the sweep frequency tester in real time to complete measurement, recording, data upload and download and other functions, and the PC analysis system is remotely connected to the sweep frequency tester.

[0004] However, the above-mentioned tester comes with a box, which makes it convenient to carry the tester and also provides certain protection for the tester. However, when the tester is placed directly in the box, the box material or structure cannot fully absorb external impact, causing the tester to be easily damaged when hit; in the event of an accidental fall, the box may not be able to completely prevent the tester from being damaged. Utility Model Content

[0005] The purpose of the present utility model is to provide a transformer voltage measuring instrument with an isolation protection structure to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a transformer voltage measuring instrument with an isolation protection structure, comprising a protection box, wherein the inner wall of the protection box is provided with a soft pad, and the surface of the soft pad is provided with a plurality of buffer strips. A measuring instrument is placed inside the protection box so as to contact the buffer strips. The buffer strips and the soft pads provide dual buffering for the four groups of measuring instruments. When the surroundings of the protection box are bumped, the measuring instrument will not be damaged.

[0007] Brackets, several of which are installed on the bottom surface of the protective box. Rubber columns are fixedly connected to the inside of the brackets. Several circular buffer holes are provided on the surface of the rubber columns. An assembly rod is connected to the middle of the rubber columns. The assembly rod is connected to the bottom of the measuring instrument. The buffer holes improve the shock absorption effect of the rubber columns. When the protective box is transported, it can provide a certain buffering effect for the measuring instrument, reducing the risk of damage to the measuring instrument due to vibration;

[0008] The box cover is rotatably connected to the protective box. A transparent plate is provided in the middle of the box cover surface. When the box cover is closed, the measuring instrument can be viewed through the transparent plate. In some dusty environments, dust can be prevented from entering the protective box.

[0009] The edge banding is connected at the gap between the protection box and the measuring instrument, and can fill some gaps to prevent foreign matter from entering the protection box, eliminating the need for frequent cleaning of the protection box.

[0010] Furthermore, a socket is provided on the surface of the protection box, a plug rod is provided on the surface of the box cover, a limiter for limiting the plug rod is installed on the socket, the limiter includes a bevel rod, and the bevel rod has a positioning block, the bevel rod is plugged into the socket, the plug rod surface has a slot corresponding to the bevel rod, a tension spring is provided between the bevel rod and the socket, when the box cover is closed, the plug rod is inserted into the socket to prop up the bevel rod, and the bevel rod is stuck in the slot to lock the box cover, and when the box cover is opened, only the bevel rod interface needs to be pulled, which is easy to operate.

[0011] Furthermore, a conical buffer column is provided at the bottom of the protection box, and the upper end of the conical buffer column is in contact with the measuring instrument. The conical buffer column has a large buffering amplitude and can both support the measuring instrument and provide buffering.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] (1) The inner walls of the protective box are double-protected with buffer strips and soft pads. The soft pads can reduce the impact force on the measuring instrument. The intervals between the buffer strips reserve space for the buffer strips to deform and absorb energy, thus achieving double protection for the measuring instrument. The measuring instrument is not easily damaged when the protective box is hit.

[0014] (2) When the box cover is closed, the soft film and conical buffer column cushion the upper surface of the measuring instrument. When the protective box is transported, the rubber column can absorb and alleviate the vibration of the measuring instrument through the buffer hole. The measuring instrument is less likely to malfunction when transported on bumpy roads. The protective box can also prevent the measuring instrument from being damaged if it accidentally falls to the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the connection between the protection box and the edge banding of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the connection between the buffer strip and the soft cushion of the utility model;

[0017] Figure 3 This is a cross-sectional view of the utility model after the plug rod and the plug socket are disassembled;

[0018] Figure 4 This is a schematic diagram of the structure of the connection between the measuring instrument and the assembly rod of the utility model;

[0019] Figure 5 This is a structural diagram of the connection between the bracket and the rubber column of the utility model.

[0020] In the figure: 1. Protective box; 2. Box cover; 3. Transparent plate; 4. Insert rod; 5. Soft film; 6. Measuring instrument; 7. Connector; 8. Bevel rod; 9. Edge banding; 10. Buffer strip; 11. Cushion; 12. Slot; 13. Tension spring; 14. Positioning block; 15. Conical buffer column; 16. Bracket; 17. Rubber column; 18. Assembly rod; 19. Buffer hole; 20. Socket; 21. Handle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example:

[0023] See also Figure 1-5 The utility model provides a technical solution: a transformer voltage measuring instrument with an isolation protection structure, comprising a protection box 1, wherein the inner wall of the protection box 1 is provided with a soft pad 11, and a plurality of buffer strips 10 are provided on the surface of the soft pad 11, wherein the plurality of buffer strips 10 are arranged at intervals, and the plurality of buffer strips 10 and the soft pad 11 are capable of deformation. A measuring instrument 6 in contact with the buffer strip 10 is placed inside the protection box 1. When the side of the protection box 1 is collided, the impact is slidably connected and absorbed by the buffer strip 10 and the soft pad 11, thereby reducing the impact force on the measuring instrument 6 and reducing the probability of damage to the measuring instrument 6.

[0024] Bracket 16, several of which are provided and mounted to the bottom surface of the protective box 1, with a rubber column 17 fixedly connected to the inside of the bracket 16, and a plurality of buffer holes 19 arranged in an annular pattern on the surface of the rubber column 17, with an assembly rod 18 connected to the middle of the rubber column 17, and the assembly rod 18 is connected to the bottom of the measuring instrument 6. When the protective box 1 vibrates due to transportation, the protective box 1 and the measuring instrument 6 are flexibly connected using the flexible rubber column 17, which reduces the vibration intensity and reduces the vibration amplitude of the measuring instrument 6, thereby avoiding damage to the measuring instrument 6 caused by vibration;

[0025] The box cover 2 is rotatably connected to the protective box 1. A transparent plate 3 is provided in the middle of the surface of the box cover 2. The detection results of the measuring instrument 6 can be viewed through the transparent plate 3 without having to open the box cover 2 all the time. The box cover 2 blocks the measuring instrument 6 and provides comprehensive protection.

[0026] The edge banding strip 9 is connected at the gap between the protection box 1 and the measuring instrument 6 to prevent some impurities from falling into the protection box 1 .

[0027] In this embodiment, if Figure 1 As shown, four soft films 5 are provided on the inner edge of the box cover 2. When the box cover 2 is closed, the soft films 5 come into contact with the measuring instrument 6, which can cushion the measuring instrument 6 and also limit the movement of the measuring instrument 6 in the protective box 1.

[0028] In this embodiment, if Figure 1 and Figure 3 As shown, a socket 7 is provided on the surface of the protective box 1, and an insertion rod 4 is provided on the surface of the box cover 2. A limiter for limiting the insertion rod 4 is installed on the socket 7. The insertion rod 4 is inserted into the socket 7. The limiter can prevent the insertion rod 4 from moving, thereby avoiding accidental opening of the box cover 2.

[0029] In this embodiment, if Figure 1 and Figure 3 As shown, the limiter includes a bevel rod 8, and the bevel rod 8 has a positioning block 14. The bevel rod 8 is plugged into the socket 7. The surface of the plug rod 4 has a slot 12 corresponding to the bevel rod 8. A tension spring 13 is provided between the bevel rod 8 and the socket 7. When the plug rod 4 is inserted into the socket 7, the plug rod 4 pushes the bevel rod 8 to move. Under the action of the tension spring 13, the bevel rod 8 is smoothly stuck in the slot 12, limiting the separation of the plug rod 4 and the socket 7.

[0030] In this embodiment, if Figure 4 As shown, a conical buffer column 15 is provided at the bottom of the protection box 1 , and the upper end of the conical buffer column 15 is in contact with the measuring instrument 6 . The conical buffer column 15 is more likely to consume vibration energy by deformation and cushion the measuring instrument 6 .

[0031] In this embodiment, if Figure 4 As shown, a socket seat 20 is provided on the side of the protection box 1, and a handle 21 is rotatably connected to the socket seat 20, so that the protection box 1 can be easily lifted and the measuring instrument 6 can be moved conveniently.

[0032] Specifically, during use, when a foreign object collides with the protection box 1, the buffer strip 10 and the soft pad 11 are in flexible contact with the measuring instrument 6, and the buffer strip 10 and the soft pad 11 deform themselves to buffer the collision force, so that the force acting on the measuring instrument 6 is smaller, and the measuring instrument 6 is less likely to malfunction. When the protection box 1 falls to the ground, the protection box 1 is subjected to vibration and impact force, which are absorbed and buffered by flexible materials such as the rubber column 17, the conical buffer column 15, and the soft film 5. The influence of vibration and impact force on the measuring instrument 6 is reduced, and the anti-fall protection of the measuring instrument 6 is more comprehensive. The measuring instrument 6 and the protection box 1 are in flexible contact and connection, which can alleviate most of the vibration force, making the overall structure more durable and with a low failure rate.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer voltage measuring instrument with an isolation protection structure, characterized in that: include: A protective box (1), wherein the inner wall of the protective box (1) is provided with a soft pad (11), a surface of the soft pad (11) is provided with a plurality of buffer strips (10), and a measuring instrument (6) in contact with the buffer strips (10) is placed inside the protective box (1); A bracket (16), wherein a plurality of brackets (16) are provided and mounted on the bottom surface of the protection box (1), a rubber column (17) is fixedly connected inside the bracket (16), a surface of the rubber column (17) is provided with a plurality of buffer holes (19) arranged in an annular pattern, a mounting rod (18) is connected to the middle of the rubber column (17), and the mounting rod (18) is connected to the bottom of the measuring instrument (6); A box cover (2), the box cover (2) is rotatably connected to the protection box (1), and a transparent plate (3) is provided in the middle of the surface of the box cover (2); An edge strip (9) is connected at a gap between the protection box (1) and the measuring instrument (6).

2. The transformer voltage measuring instrument with an isolation protection structure according to claim 1, characterized in that: Four soft sheets (5) are provided on the inner surface edge of the box cover (2).

3. The transformer voltage measuring instrument with an isolation protection structure according to claim 1, characterized in that: The surface of the protection box (1) is provided with a socket (7), the surface of the box cover (2) is provided with an insertion rod (4), and a limiter for limiting the insertion rod (4) is installed on the socket (7).

4. The transformer voltage measuring instrument with an isolation protection structure according to claim 3, characterized in that: The limiter comprises an inclined rod (8), and the inclined rod (8) is provided with a positioning block (14); the inclined rod (8) is plugged into the socket (7); the surface of the plug rod (4) is provided with a slot (12) corresponding to the inclined rod (8); and a tension spring (13) is provided between the inclined rod (8) and the socket (7).

5. The transformer voltage measuring instrument with an isolation protection structure according to claim 1, characterized in that: A conical buffer column (15) is provided at the bottom of the protection box (1), and the upper end of the conical buffer column (15) is in contact with the measuring instrument (6).

6. The transformer voltage measuring instrument with an isolation protection structure according to claim 1, characterized in that: A socket seat (20) is provided on the side of the protection box (1), and a handle (21) is rotatably connected to the socket seat (20).

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