Low-voltage mobile test transformer

Abstract

The low-voltage mobile test transformer comprises an iron core, a low-voltage coil and a high-voltage coil, the low-voltage coil and the high-voltage coil are sleeved on the iron core, and the high-voltage coil is sleeved on the outer side of the low-voltage coil. The transformer is characterized in that the two sides of an upper iron yoke of the iron core are provided with upper clamping pieces, and the upper iron yoke is clamped through the upper clamping pieces and bolts; lower clamping pieces are installed on the two sides of a lower iron yoke of the iron core, and the lower iron yoke is clamped through the lower clamping pieces and bolts. The low-voltage mobile transformer further comprises a trolley platform, the lower clamping piece is fixed to the trolley platform through bolts, walking wheels are installed at the bottom of the trolley platform, supporting rods are installed on the two sides of the trolley platform, and a handle is connected between the supporting rods on the two sides. Walking wheels on the front portion of the trolley platform are directional wheels, and walking wheels on the rear portion of the trolley platform are universal wheels.

Description

Technical Field

[0001] The utility model relates to a low-voltage mobile test transformer, belonging to the technical field of transformer manufacturing. Background Art

[0002] With the continuous development of industrial technology, the demand for transformers is increasing, and the types of voltages are also increasing. In order to meet the test requirements of different voltages, some low-voltage step-up transformers need to be configured. Since these transformers are only required for certain projects in the test, they will be moved frequently. The existing transformers are fixed and cannot be moved, and cannot be used in changing the site during the experiment. Summary of the invention

[0003] In order to make up for the shortcomings of the prior art, a low-voltage mobile test transformer which is easy to move and connect is provided.

[0004] The technical solution of the utility model is as follows:

[0005] A low-voltage mobile test transformer comprises an iron core and a low-voltage coil and a high-voltage coil sleeved on the iron core, wherein the high-voltage coil is sleeved on the outside of the low-voltage coil; the transformer is characterized in that upper clamps are installed on both sides of the upper iron yoke of the iron core, and the upper iron yoke is clamped by the upper clamps and penetrating bolts; lower clamps are installed on both sides of the lower iron yoke of the iron core, and the lower iron yoke is clamped by the lower clamps and penetrating bolts; the low-voltage mobile test transformer also comprises a trolley platform, the lower clamps are fixed to the trolley platform by bolts, running wheels are installed at the bottom of the trolley platform, support rods are installed on both sides of the trolley platform, and handles are connected between the support rods on both sides; the running wheels at the front of the trolley platform are directional wheels, and the running wheels at the rear are universal wheels.

[0006] Further preferably, the head of the high-voltage coil and the low-voltage coil are connected from the top, and the tail is connected from the bottom; a high-voltage terminal bracket plate 1 is installed on the outer side of the upper clamp on one side, and its terminal is used to connect the head lead-out wire of the high-voltage coil, and a low-voltage terminal bracket plate 1 is installed on the outer side of the upper clamp on the other side, and its terminal is used to connect the head lead-out wire of the low-voltage coil; a high-voltage terminal bracket plate 2 is installed on the lower clamp on one side, and its terminal is used to connect the tail lead-out wire of the high-voltage coil, and a low-voltage terminal bracket plate 2 is installed on the lower clamp on the other side, and its terminal is used to connect the tail lead-out wire of the low-voltage coil.

[0007] Further preferably, a threaded pull rod is connected between the upper clamp and the lower clamp, and the upper and lower ends of the pull rod are fixed with nuts.

[0008] Further preferably, an upper insulating pad is provided between the coil and the upper clamp, and the upper clamp is connected to the upper insulating pad via insulating bolts; a lower insulating pad is provided between the coil and the lower clamp, and the lower clamp is connected to the lower insulating pad via insulating bolts.

[0009] Further preferably, the upper clamp and the lower clamp are made of channel steel, and the channel steel openings face outwards.

[0010] Further preferably, a large number of vertical airway struts are sandwiched between the low-voltage coil and the high-voltage coil, and two adjacent airway struts are spaced a certain distance apart. The high-voltage coil and the low-voltage coil are cast with resin and solidified as a whole, and a large number of vertical airways are formed after the airway struts are pulled out.

[0011] The beneficial effects of the utility model are as follows: practice has proved that the low-voltage mobile test transformer structure is easy to move and wire, the high and low voltage head leads are connected at the upper part, and the tail leads are connected at the lower part, which saves external space and makes the structure more compact; a terminal bracket plate is provided, which is beneficial for quick wiring during testing; the transformer is directly assembled on the trolley platform, and the trolley is provided with universal wheels, which is beneficial for adapting to the needs of frequently moving test conditions, enhances the mechanical strength of the transformer, simplifies the assembly procedure, is beneficial for the assembly of the transformer, reduces costs, makes its structure simple, production fast, accuracy high, and improves the overall performance of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the front view of the utility model. Figure 2 It is a top view schematic diagram. Figure 3 It is a left view schematic diagram. Figure 4 Schematic diagram of the coil cross section.

[0013] In the figure, 1 is an iron core, 2 is a high-voltage coil, 3 is an upper clamp, 4 is a bolt, 5 is a lower clamp, 6 is a trolley platform, 7 is a support rod, 8 is a handle, 9 is a directional wheel, 10 is a universal wheel, 11 is a pull rod, 12 is a high-voltage terminal bracket plate 1, 13 is a low-voltage terminal bracket plate 1, 14 is a high-voltage terminal bracket plate 2, 15 is a low-voltage terminal bracket plate 2, 16 is an upper insulating spacer, 17 is a lower insulating spacer, 18 is a high-voltage head lead-out wire, 19 is a high-voltage tail lead-out wire, 20 is a fixing bolt, 21 is a low-voltage coil, 22 is an air duct, and 23 is a resin. DETAILED DESCRIPTION

[0014] The accompanying drawing shows an embodiment of the present utility model.

[0015] The utility model discloses a low-voltage mobile test transformer, comprising an iron core 1, a low-voltage coil 21 and a high-voltage coil 2 which are sleeved on the iron core, wherein the high-voltage coil is sleeved on the outside of the low-voltage coil; upper clamps 3 are installed on both sides of the upper iron yoke of the iron core, and the upper iron yoke is clamped by the upper clamps and the penetrating bolts 4; lower clamps 5 are installed on both sides of the lower iron yoke of the iron core, and the lower iron yoke is clamped by the lower clamps and the penetrating bolts 4; the low-voltage mobile test transformer also comprises a trolley platform 6, the lower clamps are fixed on the trolley platform by bolts, running wheels are installed at the bottom of the trolley platform, support rods 7 are installed on both sides of the trolley platform, and handles 8 are connected between the support rods on both sides; the running wheels at the front of the trolley platform are directional wheels 9, and the running wheels at the rear are universal wheels 10.

[0016] The head of the high-voltage coil and the low-voltage coil are connected from the top, and the tail is connected from the bottom; a high-voltage terminal bracket plate 12 is installed on the outer side of the upper clamp on one side, and its wiring terminals are used to connect the head lead of the high-voltage coil, and a low-voltage terminal bracket plate 13 is installed on the outer side of the upper clamp on the other side, and its wiring terminals are used to connect the head lead of the low-voltage coil; a high-voltage terminal bracket plate 2 14 is installed on the lower clamp on one side, and its wiring terminals are used to connect the tail lead of the high-voltage coil, and a low-voltage terminal bracket plate 2 15 is installed on the lower clamp on the other side, and its wiring terminals are used to connect the tail lead of the low-voltage coil.

[0017] A threaded pull rod 11 is connected between the upper clamp and the lower clamp, and the upper and lower ends of the pull rod are fixed with nuts.

[0018] An upper insulating pad 16 is provided between the coil and the upper clamp, and the upper clamp is connected to the upper insulating pad via insulating bolts; a lower insulating pad 17 is provided between the coil and the lower clamp, and the lower clamp is connected to the lower insulating pad via insulating bolts.

[0019] The upper clamp and the lower clamp are made of channel steel, and the opening of the channel steel faces outward.

[0020] A large number of vertical airway struts are sandwiched between the low-voltage coil 21 and the high-voltage coil 2. Two adjacent airway struts are spaced a certain distance apart. The high-voltage coil and the low-voltage coil are cast with resin 23 and solidified as a whole. After the airway struts are pulled out, a large number of vertical airways 22 are formed.

[0021] The low voltage mobile test transformer has a structure where the high and low voltage leads are connected at the upper part of the head and the tail leads are connected at the lower part. The transformer has no bottom plate and is directly fixed on the trolley platform. The trolley platform consists of a trolley platform, directional wheels and universal wheels.

[0022] The low-voltage mobile test transformer has high and low voltage leads at the upper part of the head and leads at the lower part of the tail, which saves external space and makes the structure more compact. A terminal bracket plate is provided to facilitate quick wiring during testing. The transformer is directly assembled on the trolley platform. The trolley is provided with universal wheels to facilitate adapting to the needs of frequently moving test conditions, enhance the mechanical strength of the transformer, simplify the assembly procedure, facilitate the assembly of the transformer, reduce costs, make it simple in structure, fast in production, high in accuracy, and improve the overall performance of the transformer.

Claims

1. A low voltage mobile test transformer, comprising an iron core and a low voltage coil and a high voltage coil sleeved on the iron core, wherein the high voltage coil is sleeved outside the low voltage coil; characterized in that: Upper clamps are installed on both sides of the upper iron yoke of the iron core, and the upper iron yoke is clamped by the upper clamps and penetrating bolts; lower clamps are installed on both sides of the lower iron yoke of the iron core, and the lower iron yoke is clamped by the lower clamps and penetrating bolts; The low-voltage mobile test transformer also includes a trolley platform, the lower clamp is fixed on the trolley platform by bolts, walking wheels are installed at the bottom of the trolley platform, support rods are installed on both sides of the trolley platform, and handles are connected between the support rods on both sides; the walking wheels at the front of the trolley platform are fixed wheels, and the walking wheels at the rear are universal wheels.

2. The low voltage mobile test transformer according to claim 1, characterized in that: The head of the high-voltage coil and the low-voltage coil are connected from the top, and the tail is connected from the bottom; a high-voltage terminal bracket plate 1 is installed on the outer side of the upper clamp on one side, and its wiring terminals are used to connect the head lead wires of the high-voltage coil; a low-voltage terminal bracket plate 1 is installed on the outer side of the upper clamp on the other side, and its wiring terminals are used to connect the head lead wires of the low-voltage coil; a high-voltage terminal bracket plate 2 is installed on the lower clamp on one side, and its wiring terminals are used to connect the tail lead wires of the high-voltage coil; a low-voltage terminal bracket plate 2 is installed on the lower clamp on the other side, and its wiring terminals are used to connect the tail lead wires of the low-voltage coil.

3. The low voltage mobile test transformer according to claim 1 or 2, characterized in that: A threaded pull rod is connected between the upper clamping piece and the lower clamping piece, and the upper and lower ends of the pull rod are fixed with nuts.

4. The low voltage mobile test transformer according to claim 1 or 2, characterized in that: An upper insulating pad is provided between the coil and the upper clamp, and the upper clamp is connected to the upper insulating pad via insulating bolts; a lower insulating pad is provided between the coil and the lower clamp, and the lower clamp is connected to the lower insulating pad via insulating bolts.

5. The low voltage mobile test transformer according to claim 1 or 2, characterized in that: The upper clamp and the lower clamp are made of channel steel, and the opening of the channel steel faces outward.

6. The low voltage mobile test transformer according to claim 1 or 2, characterized in that: A large number of vertical airway struts are sandwiched between the low-voltage coil and the high-voltage coil. Two adjacent airway struts are spaced a certain distance apart. The high-voltage coil and the low-voltage coil are cast with resin and solidified as a whole. After the airway struts are pulled out, a large number of vertical airways are formed.

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