Online monitoring device for voltage transformer

Abstract

The utility model discloses an on-line monitoring device for a voltage transformer, and relates to the technical field of monitoring devices. Comprising a voltage transformer, a monitoring box is installed on one side of the voltage transformer, a box door is installed on one side of the monitoring box, an insertion block is fixed to the side, close to the monitoring box, of the box door, a limiting groove is formed in one end of the insertion block, a sliding groove is formed in one side of the monitoring box, the insertion block is inserted into the sliding groove, and a first insertion groove is formed in one end of the sliding groove; one end of the first slot is provided with a second slot, one end of the monitoring box is provided with a fixing plate, and one end of the fixing plate is inserted with an insertion rod in a penetrating manner. When a current monitor and a voltage monitor need to be maintained, a connecting plate is pulled outwards, so that an inserting rod drives a limiting plate and a limiting block to move, the limiting block moves out of a limiting groove and does not limit the inserting block any more, and the box door can be opened; and then the voltage monitor and the controller can be taken out to be maintained by moving the mounting frame outwards.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring devices, in particular to an online monitoring device for a voltage transformer. Background Art

[0002] A voltage transformer is similar to a transformer in that it is an instrument used to convert voltage. However, the purpose of a transformer to convert voltage is to facilitate the transmission of electrical energy, so its capacity is large. The purpose of a voltage transformer to convert voltage is mainly to power measuring instruments and relay protection devices, to measure the voltage, power, and electrical energy of a line, or to protect valuable equipment, motors, and transformers in the line when a line fault occurs. When existing voltage transformers are working, ferromagnetic resonance often causes circuit short circuits, damage to the voltage protector or transformer, and therefore requires the use of a voltage transformer online monitoring device. The existing voltage transformer online monitoring device (Announcement No.: CN218824660U) has the following disadvantages during use:

[0003] During use, the voltage and current of the circuit in the voltage transformer are monitored by installing a current monitor and a voltage monitor in the monitoring box. However, when the internal current monitor and voltage monitor are damaged, it is inconvenient to disassemble the monitoring box to repair the internal current monitor and voltage monitor. For this reason, this patent proposes an online voltage transformer monitoring device to solve the above problem. Utility Model Content

[0004] The purpose of the present utility model is to provide an online monitoring device for a voltage transformer to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an online monitoring device for a voltage transformer, comprising a voltage transformer, a monitoring box is installed on one side of the voltage transformer, a box door is installed on one side of the monitoring box, an insert block is fixed on one side of the box door close to the monitoring box, one end of the insert block is provided with a limiting slot, one side of the monitoring box is provided with a slide slot, the insert block is inserted in the slide slot, one end of the slide slot is provided with a first slot, one end of the first slot is provided with a second slot, one end of the first slot is provided with a fixing plate at one end of the monitoring box, one end of the fixing plate is penetrated by a plug rod, one end of the plug rod is located at one end of the second slot and fixed with a limiting plate, a spring is installed between the fixing plate and the limiting plate, one end of the limiting plate is fixed with a limiting block, the limit block is slidably connected in the first slot and inserted in the limiting slot, the other end of the plug rod is fixed with a connecting plate, a plurality of plug slots are provided between the inner walls of both ends of the voltage transformer, a mounting bracket is inserted in the plug slot, and a current monitor, a voltage monitor and a controller are respectively installed above the mounting bracket.

[0006] Preferably, a plurality of mounting holes are provided at one end of the fixing plate, and a mounting groove corresponding to the mounting holes is provided at one end of the monitoring box, and bolts are screwed between the mounting holes and the mounting grooves.

[0007] Preferably, the other end of the monitoring box is provided with a plurality of connection ports, and a protective sleeve is fixed through the connection ports, and the protective sleeve is in an inclined state.

[0008] Preferably, a plurality of ventilation holes are provided through the bottom end of the mounting frame, a plurality of air inlet holes are provided at the bottom end of the monitoring box, and a fan is installed at the bottom end of the monitoring box.

[0009] Preferably, a retaining frame is installed at the bottom end of the monitoring box, the retaining frame is located outside the fan, and a filter is installed at the bottom end of the retaining frame.

[0010] Preferably, an air outlet is provided at the top of the monitoring box, a connecting frame is fixed to the top of the monitoring box, the interior of the connecting frame is a cavity, and a plurality of air outlets are fixedly connected at the bottom of the connecting frame.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] When the current monitor and voltage monitor need to be repaired, the connecting plate is pulled outward, so that the plug rod drives the limit plate and the limit block to move, so that the limit block moves out of the limit slot and no longer limits the plug block, so that the box door can be opened, and then the voltage monitor and controller can be taken out and repaired by moving the mounting bracket outward, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 For this utility model Figure 2 A magnified view of the structure at center A;

[0016] Figure 4 This is a bottom view of the utility model after removing the filter;

[0017] Figure 5 It is a bottom view of the present utility model.

[0018] In the figure: 1. Voltage transformer; 2. Monitoring box; 3. Box door; 4. Mounting frame; 5. Slide; 6. Insert block; 7. Limit block; 8. Limit plate; 9. Spring; 10. Insert rod; 11. Fixing plate; 12. Connecting plate; 13. Connecting frame; 14. Air outlet; 15. Connecting slot; 16. Ventilation hole; 17. Fan; 18. Baffle; 19. Protective cover; 20. Current monitor; 21. Voltage monitor; 22. Controller. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying 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.

[0020] When the existing voltage transformer 1 is working, the circuit short circuit, voltage protector or transformer damage often occurs due to the ferromagnetic resonance phenomenon. Therefore, it is necessary to use a voltage transformer online monitoring device. The voltage transformer online monitoring device provided by the utility model monitors the voltage and current of the circuit in the voltage transformer 1 by setting a current monitor 20 and a voltage monitor 21, and sends the monitored signal to the controller 22. In addition, the device body can be opened quickly, and it is more convenient to repair the current monitor 20 and the voltage monitor 21.

[0021] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: a voltage transformer online monitoring device, including a voltage transformer 1, a monitoring box 2 is installed on one side of the voltage transformer 1, a box door 3 is installed on one side of the monitoring box 2, an insert block 6 is fixed on the side of the box door 3 close to the monitoring box 2, one end of the insert block 6 is provided with a limited slot, a side of the monitoring box 2 is provided with a slide 5, the insert block 6 is inserted into the slide 5, one end of the slide 5 is provided with a first slot, one end of the first slot is provided with a second slot, one end of the monitoring box 2 is provided with a fixing plate 11, one end of the fixing plate 11 is provided with a fixed plate 11 A rod 10 is inserted through the end of the rod 10. A limit plate 8 is fixed at one end of the rod 10 located in the second slot. A spring 9 is installed between the fixed plate 11 and the limit plate 8. A limit block 7 is fixed at one end of the limit plate 8. The limit block 7 is slidably connected in the first slot and inserted in the limit slot. A connecting plate 12 is fixed to the other end of the rod 10. A plurality of plug-in slots 15 are provided between the inner walls at both ends of the voltage transformer 1. A mounting bracket 4 is inserted in the plug-in slot 15. A current monitor 20, a voltage monitor 21 and a controller 22 are respectively installed above the mounting bracket 4. A plurality of mounting holes are provided at one end of the fixed plate 11, and a mounting slot corresponding to the mounting holes is provided at one end of the monitoring box 2. Bolts are screwed between the mounting holes and the mounting slots.

[0022] It should be noted that when the current monitor 20 and the voltage monitor 21 need to be repaired, the connecting plate 12 is pulled outward so that the insertion rod 10 drives the limit plate 8 and the limit block 7 to move, so that the limit block 7 moves out of the limit groove and no longer limits the insertion block 6, so that the box door 3 can be opened, and then the voltage monitor 21 and the controller 22 can be taken out and repaired by moving the mounting bracket 4 outward, which is more convenient. In addition, the voltage and current of the circuit in the voltage transformer 1 are monitored by the current monitor 20 and the voltage monitor 21, and the monitored signal is sent to the controller 22. When ferromagnetic resonance occurs in the voltage transformer 1 and the circuit is abnormal, the controller 22 can send the abnormality to the wireless circuit breaker and the wireless circuit breaker drives the short-circuit switch in the voltage transformer 1 to reclose, thereby ensuring the safety of the device during operation.

[0023] like Figure 4 and Figure 5 As shown, the other end of the monitoring box 2 is provided with a plurality of connection ports, and a moisture-proof agent is installed in the monitoring box 2. A protective cover 19 is fixed through the connection port, and the protective cover 19 is in an inclined state to prevent rainwater from entering the protective cover 19. A plurality of ventilation holes 16 are provided through the bottom end of the mounting frame 4, and a plurality of air inlet holes are provided at the bottom end of the monitoring box 2. A fan 17 is installed at the bottom end of the monitoring box 2. A retaining frame 18 is installed at the bottom end of the monitoring box 2, and the retaining frame 18 is located on the outside of the fan 17. A filter is installed at the bottom end of the retaining frame 18. An air outlet is provided at the top end of the monitoring box 2, and a connecting frame 13 is fixed to the top end of the monitoring box 2. The interior of the connecting frame 13 is a cavity, and a plurality of air outlets 14 are fixedly connected at the bottom end.

[0024] It should be noted that the protective cover 19 protects the wires, and the connected wires are inserted into the protective cover 19 and enter the monitoring box 2 to be connected to the current monitor 20, the voltage monitor 21 and the controller 22. Air is blown into the monitoring box 2 through the fan 17, and then the current monitor 20, the voltage monitor 21 and the controller 22 are cooled through the ventilation holes 16. The air in the monitoring box 2 is discharged through the air outlet 14.

[0025] Working principle: When the current monitor 20 and the voltage monitor 21 need to be repaired, the connecting plate 12 is pulled outward so that the insertion rod 10 drives the limit plate 8 and the limit block 7 to move, so that the limit block 7 moves out of the limit slot and no longer limits the insertion block 6, so that the box door 3 can be opened, and then the voltage monitor 21 and the controller 22 can be taken out and repaired by moving the mounting bracket 4 outward, which is more convenient. After the repair is completed, the mounting bracket 4 is inserted into the plug slot 15, and then the box door 3 is closed, and the insertion block 6 is inserted into the slide slot 5. During the insertion process of the insertion block 6, the spring 9 is squeezed and the spring 9 is compressed. When the insertion block 6 is fully inserted, the spring 9 is no longer compressed and drives the limit block 7 to insert into the limit slot to fix the insertion block 6.

[0026] 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 limited by the accompanying embodiments and their equivalents.

Claims

1. A voltage transformer online monitoring device, comprising a voltage transformer (1), characterized in that: A monitoring box (2) is installed on one side of the voltage transformer (1), a box door (3) is installed on one side of the monitoring box (2), an insert (6) is fixed on the side of the box door (3) close to the monitoring box (2), one end of the insert (6) is provided with a limiting slot, a slide (5) is provided on one side of the monitoring box (2), the insert (6) is inserted into the slide (5), one end of the slide (5) is provided with a first slot, one end of the first slot is provided with a second slot, a fixing plate (11) is installed on one end of the monitoring box (2), one end of the fixing plate (11) is penetrated and inserted with an insert rod (10), and the insert rod (10) is located at the first slot. A limit plate (8) is fixed at one end of the second slot, a spring (9) is installed between the fixed plate (11) and the limit plate (8), a limit block (7) is fixed at one end of the limit plate (8), the limit block (7) is slidably connected in the first slot and inserted in the limit slot, a connecting plate (12) is fixed at the other end of the plug rod (10), a plurality of plug-in slots (15) are provided between the inner walls at both ends of the voltage transformer (1), a mounting frame (4) is inserted in the plug-in slots (15), and a current monitor (20), a voltage monitor (21) and a controller (22) are respectively installed above the mounting frame (4).

2. The voltage transformer online monitoring device according to claim 1, characterized in that: One end of the fixing plate (11) is provided with a plurality of mounting holes, and one end of the monitoring box (2) is provided with mounting grooves corresponding to the mounting holes one by one, with bolts being screwed between the mounting holes and the mounting grooves.

3. The voltage transformer online monitoring device according to claim 1, characterized in that: The other end of the monitoring box (2) is provided with a plurality of connection ports, and a protective sleeve (19) is fixedly passed through the connection ports, and the protective sleeve (19) is in an inclined state.

4. The voltage transformer online monitoring device according to claim 1, characterized in that: The bottom end of the mounting frame (4) is provided with a plurality of ventilation holes (16), the bottom end of the monitoring box (2) is provided with a plurality of air inlet holes, and the bottom end of the monitoring box (2) is provided with a fan (17).

5. The voltage transformer online monitoring device according to claim 1, characterized in that: A retaining frame (18) is installed at the bottom end of the monitoring box (2), the retaining frame (18) is located outside the fan (17), and a filter is installed at the bottom end of the retaining frame (18).

6. The voltage transformer online monitoring device according to claim 1, characterized in that: described An air outlet is provided at the top of the monitoring box (2), and a connecting frame (13) is fixed at the top of the monitoring box (2). The interior of the connecting frame (13) is a cavity, and the bottom end thereof is fixedly connected to a plurality of air outlets (14).

Images