Arc resistant transformer coil insulation enhancement device

Abstract

The utility model discloses an arc -resistant mutual -inductor coil insulation reinforcing device, including temperature control mechanism, temperature control mechanism includes coil, the abutting plate of in -line coil rear side, with the entering pipe and output pipe of abutting plate fixedly connected, the liquid tank of fixedly connected between entering pipe and output pipe, be located the micro -circulation pump of liquid tank inside and with entering pipe bottom fixedly connected, the multiple flow channels of being set up in the abutting plate inside, entering pipe, output pipe all with flow channel inside intercommunication. In the utility model, entering pipe, output pipe, micro -circulation pump cooperate with each other, formed a high -efficient liquid circulation channel, make cooling liquid can circulate flow in multiple flow channels, and cooling liquid passes through the outer wall of cooling abutting plate, realizes the heat exchange with coil, effectively prevents coil overheat and breaks down insulating material, improves the short -time overload bearing capacity and arc -resistant performance of this device.

Description

Technical Field

[0001] This utility model relates to the technical field of insulation enhancement devices, specifically an insulation enhancement device for arc-resistant transformer coils. Background Technology

[0002] Instrument transformers, also known as instrument transformers, are a general term encompassing current transformers and voltage transformers. They are primary devices that enable communication between primary and secondary electrical systems. Instrument transformers transform the high voltage and large current of the primary system into low voltage and small current for use by measuring instruments, relay protection devices, and automatic devices in the secondary system. They serve as both a connecting element and an isolating element between the primary and secondary systems in a power system.

[0003] Under normal operating conditions, coils generate heat due to conductor resistance, eddy currents in the core, and dielectric losses, leading to a temperature rise. Under abnormal conditions such as overload, short-circuit faults, or poor heat dissipation, the coil overheats, and the rapid temperature increase causes thermal oxidation and decomposition of the organic molecular chains in the insulation material. This results in decreased mechanical strength, material embrittlement, and even carbonization, leading to loss of dielectric strength and thermal breakdown. This not only directly damages the insulation integrity of the coil but also significantly reduces the short-term overload withstand capability and arc resistance of the transformer. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] An arc-resistant transformer coil insulation enhancement device includes a temperature control mechanism. The temperature control mechanism includes a coil, a backing plate attached to the rear side of the coil, an inlet pipe and an outlet pipe fixedly connected to the backing plate, a liquid tank fixedly connected between the inlet pipe and the outlet pipe, a miniature circulation pump disposed inside the liquid tank and fixedly connected to the bottom end of the inlet pipe, and multiple flow channels opened inside the backing plate. The inlet pipe and the outlet pipe are both connected to the interior of the flow channels.

[0007] By adopting the above technical solution, the inlet pipe, outlet pipe, and micro circulation pump work together to form a highly efficient liquid circulation channel, which allows the coolant to circulate in multiple channels. The coolant cools against the outer wall of the plate and achieves heat exchange with the coil, effectively preventing the coil from overheating and breaking down the insulation material, and improving the short-term overload withstand capability and arc resistance of the device.

[0008] In a preferred embodiment, the present invention can be further configured such that: a partition is fixedly connected inside the liquid tank, the partition divides the inside of the liquid tank into a liquid chamber and an air chamber, the micro circulation pump is located inside the air chamber, and the output pipe and the water pumping end of the micro circulation pump are both connected to the inside of the liquid chamber.

[0009] In a preferred embodiment, the present invention can be further configured such that a thermally conductive insulating liner is fixedly connected between the coil and the backing plate, and both the backing plate and the thermally conductive insulating liner are configured as C-shaped.

[0010] In a preferred embodiment, the present invention can be further configured such that: multiple pressure frames are sleeved on the outer side of the coil, the multiple pressure frames are equally spaced and arranged in a ring, and the rear side of the pressure frame is fixedly connected to the front side wall of the backing plate.

[0011] In a preferred embodiment, the present invention can be further configured such that a heat exchanger is fixedly connected to the rear side of the liquid tank, and the heat exchanger is connected in series with a micro circulation pump.

[0012] In a preferred embodiment, the present invention can be further configured such that: both the bottom ends of the inlet pipe and the outlet pipe are fitted with sealing rings, and the two sealing rings are respectively attached to the top of the liquid tank and one side wall of the liquid tank.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, the inlet pipe, outlet pipe, and micro circulation pump work together to form a highly efficient liquid circulation channel, which allows the coolant to circulate in multiple channels. The coolant exchanges heat with the coil by cooling the outer wall of the plate, effectively preventing the coil from overheating and breaking down the insulation material, and improving the short-term overload withstand capability and arc resistance of the device.

[0015] 2. In this utility model, during the heat exchange of the coolant, the thermally conductive insulating liner can quickly conduct the heat generated by the coil away, thereby improving the cooling effect. At the same time, after the heat exchanged coolant enters the liquid tank, it will be cooled by the heat exchanger. Under the dual cooling, the heat dissipation capacity is greatly improved. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This is a front view of the temperature control mechanism of this utility model;

[0018] Figure 3 This is a rear view of the temperature control mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram showing the installation positions of the thermally conductive and insulating liner and the pressure frame of this utility model.

[0020] Figure label:

[0021] 100. Temperature control mechanism; 110. Coil; 120. Backing plate; 130. Inlet pipe; 140. Outlet pipe; 150. Liquid tank; 160. Miniature circulation pump; 170. Flow channel;

[0022] 200. Thermally conductive and insulating lining;

[0023] 300. Pressure frame;

[0024] 400. Heat exchanger;

[0025] 500. Sealing ring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0027] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0028] The following describes, with reference to the accompanying drawings, some embodiments of an arc-resistant transformer coil insulation enhancement device provided by this utility model.

[0029] Example 1:

[0030] Combination Figure 1-4 As shown, the present invention provides an arc-resistant transformer coil insulation enhancement device, including a temperature control mechanism 100. The temperature control mechanism 100 includes a coil 110, a backing plate 120 attached to the rear side of the coil 110, an inlet pipe 130 and an outlet pipe 140 fixedly connected to the backing plate 120, a liquid tank 150 fixedly connected between the inlet pipe 130 and the outlet pipe 140, a miniature circulation pump 160 disposed inside the liquid tank 150 and fixedly connected to the bottom end of the inlet pipe 130, and a plurality of flow channels 170 opened inside the backing plate 120. The inlet pipe 130 and the outlet pipe 140 are both connected to the interior of the flow channels 170.

[0031] Furthermore, a partition is fixedly connected inside the liquid tank 150, which divides the interior of the liquid tank 150 into a liquid chamber and an air chamber. The micro circulation pump 160 is located inside the air chamber. The output pipe 140 and the water pumping end of the micro circulation pump 160 are both connected to the interior of the liquid chamber. The partition can protect the micro circulation pump 160 and reduce its failure rate.

[0032] Furthermore, a thermally conductive insulating liner 200 is fixed between the coil 110 and the backing plate 120. Both the backing plate 120 and the thermally conductive insulating liner 200 are C-shaped. The thermally conductive insulating liner 200 has good thermal conductivity and insulation properties. It can quickly conduct the heat generated by the coil 110 away, while preventing current leakage and ensuring the safe operation of the device.

[0033] Furthermore, multiple pressure frames 300 are sleeved on the outer side of the coil 110. The multiple pressure frames 300 are equally spaced and arranged in a ring. The rear side of the pressure frame 300 is fixed to the front side wall of the backing plate 120. The pressure frame 300 can securely fix the coil 110 and the thermally conductive insulating liner 200 to prevent the components from becoming loose during the operation of the device.

[0034] Example 2:

[0035] Combination Figure 3 As shown, based on Embodiment 1, a heat exchanger 400 is fixedly connected to the rear side of the liquid tank 150. The heat exchanger 400 is connected in series with the micro circulation pump 160. The heat exchanger 400 can effectively exchange heat with the coolant, further reduce the temperature of the coolant, and improve the heat dissipation effect.

[0036] Example 3:

[0037] Combination Figure 1-3 As shown in the above embodiment, both the bottom ends of the inlet pipe 130 and the outlet pipe 140 are fitted with sealing rings 500. The two sealing rings 500 are respectively attached to the top of the liquid tank 150 and one side wall of the liquid tank 150. The sealing rings 500 play a good sealing role, preventing coolant leakage, and also preventing external dust, moisture and other impurities from entering the device and affecting the performance of the device.

[0038] The working principle and usage process of this utility model: In the initial state, the support plate 120 provides a stable support structure for the entire device, enhancing the overall stability of the device. The inlet pipe 130, the outlet pipe 140, and the micro circulation pump 160 work together to form an efficient liquid circulation channel, allowing the coolant to circulate within multiple flow channels 170. The coolant exchanges heat with the coil 110 by cooling the outer wall of the support plate 120, effectively preventing the coil 110 from overheating and breaking down the insulation material, and improving the short-term overload withstand capability and arc resistance of this device.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An arc-resistant transformer coil insulation enhancement device, comprising a temperature control mechanism (100), characterized in that: The temperature control mechanism (100) includes a coil (110), a backing plate (120) attached to the rear side of the coil (110), an inlet pipe (130) and an outlet pipe (140) fixedly connected to the backing plate (120), a liquid tank (150) fixedly connected between the inlet pipe (130) and the outlet pipe (140), a miniature circulation pump (160) disposed inside the liquid tank (150) and fixedly connected to the bottom end of the inlet pipe (130), and multiple flow channels (170) opened inside the backing plate (120). The inlet pipe (130) and the outlet pipe (140) are both connected to the inside of the flow channels (170).

2. The arc-resistant transformer coil insulation enhancement device according to claim 1, characterized in that, The liquid tank (150) is fixedly connected to a partition, which divides the interior of the liquid tank (150) into a liquid chamber and an air chamber. The micro circulation pump (160) is located inside the air chamber. The output pipe (140) and the pumping end of the micro circulation pump (160) are both connected to the interior of the liquid chamber.

3. The arc-resistant transformer coil insulation enhancement device according to claim 1, characterized in that, A thermally conductive insulating liner (200) is fixed between the coil (110) and the backing plate (120), and both the backing plate (120) and the thermally conductive insulating liner (200) are configured as C-shaped.

4. The arc-resistant transformer coil insulation enhancement device according to claim 1, characterized in that, Multiple pressure frames (300) are sleeved on the outside of the coil (110). The multiple pressure frames (300) are equally spaced and arranged in a ring. The rear side of the pressure frame (300) is fixed to the front side wall of the backing plate (120).

5. The arc-resistant transformer coil insulation enhancement device according to claim 1, characterized in that, A heat exchanger (400) is fixedly connected to the rear side of the liquid tank (150), and the heat exchanger (400) is connected in series with a micro circulation pump (160).

6. The arc-resistant transformer coil insulation enhancement device according to claim 1, characterized in that, Both the inlet pipe (130) and the outlet pipe (140) are fitted with sealing rings (500) at their bottom ends, and the two sealing rings (500) are respectively attached to the top of the liquid tank (150) and one side wall of the liquid tank (150).

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