Tank-type current transformer

Abstract

The utility model relates to the technical field of current transformer devices, in particular to a tank-type current transformer which comprises a tank-type current transformer body and an overload protection module, the tail end of the overload protection module penetrates through the bottom of a protection assembly through a connecting wire end to be connected with a winding body in a wiring mode, and the head section of the overload protection module is connected to the side face of the protection assembly. Only by connecting a line segment to a first wiring area and then controlling a telescopic air cylinder to enable a telescopic rod to descend, an antimagnetic line fixing seat fixes the head end of a line end and meanwhile carries out antimagnetic protection on the exposed connection part of the line end, the exposed connection part is prevented from being interfered by the outside, and an overload protection module monitors the magnitude of current on a protection assembly. When the external current is far higher than the primary rated current, the overload protection module disconnects the circuit, the situation that the mutual inductor in a normal operation system possibly reaches a saturation state is avoided, meanwhile, the secondary side transmitter is installed on the upper secondary side transmitter so that data can be uploaded conveniently, and the use safety of the mutual inductor can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformer devices, in particular to a tank-type current transformer. Background Art

[0002] The current transformer is an instrument that converts the large current on the primary side into the small current on the secondary side for measurement based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and windings. Its primary winding has very few turns and is connected in series in the circuit of the current to be measured, so it often has the entire current of the circuit flowing through it. The secondary winding has more turns and is connected in series in the measuring instrument and the protection circuit. When the current transformer is working, its secondary circuit is always closed, so the impedance of the series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to short circuit. The current transformer converts the large current on the primary side into a small current on the secondary side for measurement, and the secondary side cannot be open circuited;

[0003] The tank-type current transformer according to patent publication number CN205670480U is characterized in that it includes a pressure-resistant casing and a current transformer assembly arranged in the pressure-resistant casing; the lower end of the current transformer assembly is installed at the bottom end of the pressure-resistant casing, and the current transformer assembly includes a base plate, a support tube detachably installed on the base plate, and a CT coil glued on the support tube, wherein the CT coils are glued between each other, but the external wiring terminal of the device is poorly fixed during use, which can easily cause the wiring terminal to be disconnected, affecting the use, and at the same time, it is impossible to restrict the wiring of the external device, which can easily cause the transformer to be saturated, which will cause the fault impact to become greater, the fault occurrence time to be prolonged, and the normal power supply of the system is greatly hindered, posing a great threat to the safety of the operating equipment.

[0004] In view of this, we propose a tank type current transformer. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a tank-type current transformer.

[0006] The technical solution of the utility model is:

[0007] A tank-type current transformer comprises a tank-type current transformer body, a protective component is installed above the tank-type current transformer body, a maintenance component is installed outside the tank-type current transformer body, the protective component comprises: a secondary side transmitter, an anti-magnetic wire holder, an overload protection module, a telescopic cylinder, etc., a secondary side transmitter is installed above the protective component, an adjustment panel is installed above the secondary side transmitter, a vent begins to be provided on the side of the secondary side transmitter, a vent is provided on the side of the secondary side transmitter, a telescopic cylinder is installed at the front end of the secondary side transmitter, a telescopic rod is installed at the output end of the telescopic cylinder, and an anti-magnetic wire holder is provided at the end of the telescopic rod.

[0008] As a preferred technical solution, a wiring area 1 is installed below the anti-magnetic wire holder, a connecting wire end is installed on the side of the protection component, and an overload protection module is installed at the end of the connecting wire end.

[0009] As a preferred technical solution, the maintenance component includes: an internal observation module, a maintenance and protection door, a connecting inner cavity, etc. A connecting inner cavity is installed on the inner side of the maintenance component, a wiring area 2 is opened on the inner side of the connecting inner cavity, a connecting column is installed at the inner lower part of the maintenance component, and a maintenance and protection door is opened below the connecting column.

[0010] As a preferred technical solution, an adjustment groove is slidably connected to the outer side of the maintenance protection door, an internal observation module is installed on the side of the maintenance protection door, and a protective glass is provided at the front end of the internal observation module.

[0011] As a preferred technical solution, a winding body is installed on the inner side of the protective glass, and an assembly plate is installed below the winding body.

[0012] As a preferred technical solution, a buffer inner cavity is installed below the assembly plate, and a buffer ring is provided on the outer side of the buffer inner cavity.

[0013] As a preferred technical solution, a buffer base is fixedly installed below the buffer ring, an electric screen protection base is provided above the buffer ring, a connecting hook is provided above the electric screen protection base, and an assembly cover is provided above the connecting hook.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model connects the end of the connecting wire through the bottom of the protection component and the winding body, and the first section is connected to the overload protection module on the side of the protection component. When the current transformer needs to be connected, it can only be connected to the wiring area 1 by connecting the wire segment, and then the telescopic cylinder is controlled to lower the telescopic rod, so that the anti-magnetic wire holder fixes the head end of the wire end and at the same time performs anti-magnetic protection on the exposed connection part to avoid external interference. The overload protection module monitors the current in the protection component. When the external current far exceeds the primary rated current, the overload protection module disconnects its circuit to avoid the transformer in the normally operating system from reaching a saturated state. At the same time, the secondary side transmitter above is installed with a secondary side transmitter to facilitate data upload, thereby improving the safety of the transformer.

[0016] 2. The utility model can make a preliminary observation of the inside of the transformer through the protective glass at the front end of the internal observation module. When the transformer fails and cannot be judged through the protective glass or needs to be repaired, the connecting column can be pulled to slide the maintenance protection door upward from the inside of the adjustment slot. When the maintenance protection door is completely taken out of the adjustment slot, it can be placed on one side to maintain the inside of the device, which is convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the tank-type current transformer of the utility model;

[0018] Figure 2 This is a schematic diagram of the appearance component structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the protection component of the utility model;

[0020] Figure 4 This is a schematic diagram of the maintenance component structure of the utility model.

[0021] In the figure: 1. Tank-type current transformer body; 11. Winding body; 12. Buffer inner cavity; 13. Assembly plate; 14. Buffer base; 15. Assembly cover; 16. Connection hook; 17. Electric screen protection base; 18. Buffer ring; 2. Protection component; 21. Ventilation port; 22. Adjustment panel; 23. Secondary side transmitter; 24. Telescopic cylinder; 25. Telescopic rod; 26. Wiring area one; 27. Anti-magnetic wire holder; 28. Connection wire end; 29. ​​Overload protection module; 3. Maintenance component; 31. Adjustment slot; 32. Connection inner cavity; 33. Wiring area two; 34. Connection column; 35. Internal observation module; 36. Protective glass; 37. Maintenance protection door. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] See also Figures 1 to 4 , the utility model provides a technical solution:

[0025] A tank current transformer comprises a tank current transformer body 1, a protection component 2 is installed above the tank current transformer body 1, a maintenance component 3 is installed outside the tank current transformer body 1, the protection component 2 comprises: a secondary side transmitter 23, an anti-magnetic wire holder 27, an overload protection module 29, a telescopic cylinder 24, etc., the secondary side transmitter 23 is installed above the protection component 2, an adjustment panel 22 is installed above the secondary side transmitter 23, a vent 21 begins to be provided on the side of the secondary side transmitter 23, the vent 21 is provided on the side of the secondary side transmitter 23, a telescopic cylinder 24 is installed at the front end of the secondary side transmitter 23, a telescopic rod 25 is installed at the output end of the telescopic cylinder 24, an anti-magnetic wire holder 27 is provided at the end of the telescopic rod 25, a wiring area 26 is installed below the anti-magnetic wire holder 27, a connecting wire end 28 is installed on the side of the protection component 2, and an overload protection module 29 is installed at the end of the connecting wire end 28.

[0026] It should be added that the end of the connecting wire terminal 28 passes through the bottom of the protection component 2 and is connected to the winding body 11 through the wiring area 2 33. The zero screen (high-voltage screen) of the winding body 11 is located on the outermost side, adjacent to the high-voltage primary winding, and the end screen (ground screen) is placed in the innermost layer adjacent to the secondary winding lead tube. The first section is connected to the overload protection module 29 on the side of the protection component 2. When the current transformer needs to be connected, it can only be connected to the wiring area 1 26, and then the telescopic cylinder 24 is controlled to lower the telescopic rod 25, so that the anti-magnetic fixed wire seat 27 fixes the head end of the wire end and provides anti-magnetic protection for the exposed connection part to avoid external interference. The overload protection module 29 monitors the current of the external connection in the protection component 2. When the external current far exceeds the primary set rated current, the overload protection module 29 disconnects its circuit to avoid the transformer in the normally operating system from reaching saturation. At the same time, a secondary side transmitter 23 is installed above to facilitate data upload, thereby improving the safety of the transformer.

[0027] As a preferred embodiment of the present invention, the maintenance component 3 includes: an internal observation module 35, a maintenance protection door 37, a connecting inner cavity 32, etc. The connecting inner cavity 32 is installed on the inner side of the maintenance component 3, and a wiring area 2 33 is provided on the inner side of the connecting inner cavity 32. A connecting column 34 is installed on the inner lower part of the maintenance component 3, and a maintenance protection door 37 is provided below the connecting column 34. An adjustment groove 31 is slidably connected to the outer side of the maintenance protection door 37, an internal observation module 35 is installed on the side of the maintenance protection door 37, and a protective glass 36 is provided at the front end of the internal observation module 35.

[0028] It is worth mentioning that the interior of the transformer can be initially observed through the protective glass 36 at the front end of the internal observation module 35. When the transformer fails and cannot be judged through the protective glass 36 or needs maintenance, the connecting column 34 can pull the maintenance protection door 37 to slide upward from the inside of the adjustment slot 31. When the maintenance protection door 37 is completely taken out of the adjustment slot 31, it can be placed aside for maintenance of the inside of the device, which is convenient for later inspection.

[0029] As a preferred embodiment of the present invention, a winding body 11 is installed on the inner side of the protective glass 36, an assembly plate 13 is installed below the winding body 11, a buffer inner cavity 12 is installed below the assembly plate 13, a buffer ring 18 is provided on the outer side of the buffer inner cavity 12, a buffer base 14 is fixedly installed below the buffer ring 18, an electric screen protection base 17 is provided above the buffer ring 18, a connecting hook 16 is provided above the electric screen protection base 17, and an assembly cover 15 is provided above the connecting hook 16.

[0030] During specific use, the cushioning base 14 is made of rubber material to avoid damage to the base and the bottom surface when placing, and the cushioning inner cavity 12 cushions the rebound shock during placement.

[0031] When a tank-type current transformer of the utility model is used, the end of the connecting wire terminal 28 is first passed through the bottom of the protective component 2, and connected to the winding body 11 through the wiring area 2 33. The zero screen (high-voltage screen) of the winding body 11 is located at the outermost side, adjacent to the high-voltage primary winding, and the end screen (ground screen) is placed in the innermost layer adjacent to the secondary winding lead tube. The first section is connected to the overload protection module 29 on the side of the protective component 2. When the current transformer needs to be connected, it can only be connected to the wiring area 1 26 by connecting the line segment, and then the telescopic cylinder 24 is controlled to make the telescopic rod 25 descend, so that the anti-magnetic fixed wire seat 27 fixes the head end of the line end and at the same time performs anti-magnetic protection on the exposed connection part to avoid it from being interfered by the outside world. The overload protection module 29 is connected to the protective component 2 to the outside world. The connected current is monitored. When the external current far exceeds the primary set rated current, the overload protection module 29 disconnects its circuit to prevent the transformer in the normally operating system from reaching a saturated state. At the same time, a secondary side transmitter 23 is installed on the top to facilitate data upload, thereby improving the safety of the transformer. The interior of the transformer can be initially observed through the protective glass 36 at the front end of the internal observation module 35. When the transformer fails and cannot be judged through the protective glass 36 or needs to be repaired, the connecting column 34 can pull the maintenance protection door 37 to slide upward from the inside of the adjustment slot 31. When the maintenance protection door 37 is completely taken out of the adjustment slot 31, it can be placed on one side to maintain the inside of the device, which is convenient for later maintenance.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A tank-type current transformer, comprising a tank-type current transformer body (1), characterized in that: A protection component (2) is installed above the tank-type current transformer body (1), a maintenance component (3) is installed outside the tank-type current transformer body (1), the protection component (2) comprises: a secondary side transmitter (23), an anti-magnetic wire holder (27), an overload protection module (29), and a telescopic cylinder (24), the secondary side transmitter (23) is installed above the protection component (2), an adjustment panel (22) is installed above the secondary side transmitter (23), a vent (21) is provided on the side of the secondary side transmitter (23), a telescopic cylinder (24) is installed at the front end of the secondary side transmitter (23), a telescopic rod (25) is installed at the output end of the telescopic cylinder (24), and a telescopic rod (25) is provided at the end of the telescopic rod (25).

2. A tank type current transformer as claimed in claim 1, characterized in that: A wiring area 1 (26) is installed below the anti-magnetic wire holder (27), a connecting wire end (28) is installed on the side of the protection component (2), and an overload protection module (29) is installed at the end of the connecting wire end (28).

3. A tank type current transformer as claimed in claim 1, characterized in that: The maintenance component (3) comprises: an internal observation module (35), a maintenance protection door (37), and a connecting inner cavity (32). The connecting inner cavity (32) is installed on the inner side of the maintenance component (3), and a second wiring area (33) is provided on the inner side of the connecting inner cavity (32). A connecting column (34) is installed on the inner lower part of the maintenance component (3), and a maintenance protection door (37) is provided below the connecting column (34).

4. A tank type current transformer as claimed in claim 3, characterized in that: The outer side of the maintenance protection door (37) is slidably connected with an adjustment groove (31), the side of the maintenance protection door (37) is installed with an internal observation module (35), and the front end of the internal observation module (35) is provided with a protective glass (36).

5. A tank type current transformer as claimed in claim 4, characterized in that: A winding body (11) is installed inside the protective glass (36), and an assembly plate (13) is installed below the winding body (11).

6. A tank type current transformer as claimed in claim 5, characterized in that: A buffer inner cavity (12) is installed below the assembly plate (13), and a buffer ring (18) is provided on the outer side of the buffer inner cavity (12).

7. A tank type current transformer as claimed in claim 6, characterized in that: A buffer base (14) is fixedly installed below the buffer ring (18), an electric screen protection base (17) is provided above the buffer ring (18), a connecting hook (16) is provided above the electric screen protection base (17), and an assembly cover (15) is provided above the connecting hook (16).

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