A detachable 10 kilovolt distribution transformer sealing device

By designing a detachable sealing device for a 10 kV distribution transformer, using steel sheets and lead seals to seal the transformer terminals, the problem of unauthorized use of the transformer was solved, thus mitigating economic losses and ensuring safe operation.

CN224355090UActive Publication Date: 2026-06-12JIXI ELECTRIC POWER BUREAU +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIXI ELECTRIC POWER BUREAU
Filing Date
2025-06-23
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Current technology cannot seal the terminals of transformers, which allows users to use transformers without authorization, posing risks of unauthorized power connection and use, and causing economic losses.

Method used

Design a detachable sealing device for a 10 kV distribution transformer. The device uses two steel plates and a lead seal. It is fixed to the transformer terminal with nuts and the steel plate through holes are sealed with lead seals to achieve transformer sealing.

Benefits of technology

It effectively prevents users from using the transformer without authorization, reduces economic losses, is easy to disassemble and has clear markings, and can be reused.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a detachable 10 kilovolt distribution transformer adds seal device relates to power transformer technical field. In order to solve the problem that the wiring terminal of transformer cannot be locked, leading to the user privately using transformer, thereby existing user privately connecting electricity, electricity risk, and further leading to the problem of big economic loss. The upper surface one end of steel sheet is equipped with nut, the upper surface other end midline of every steel sheet is processed with a through -hole, and the through -hole of two steel sheet upper surfaces is locked by lead seal link, the nut on two steel sheets is installed on the adjacent two binding posts of transformer respectively, then two steel sheet upper surface through -hole is locked by lead seal link, and after two phase short circuit of transformer, the transformer will not be used, so using this device can lock the transformer, avoid the user privately using transformer, thereby avoiding the electricity risk due to privately connecting electricity, and further recovering the economic loss of user due to privately using transformer. The utility model is suitable for locking transformer.
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Description

Technical Field

[0001] This utility model relates to the field of power transformer technology, specifically to a detachable sealing device for a 10 kV distribution transformer. Background Technology

[0002] A transformer is a device that transforms alternating current (AC) voltage, current, and impedance. When an AC current flows through the primary coil, an AC magnetic flux is generated in the iron core, inducing a voltage in the secondary coil. A transformer consists of an iron core and coils. The coils have two or more windings; the winding connected to the power source is called the primary coil, and the others are called secondary coils. In a generator, whether the coil moves through a magnetic field or the magnetic field moves through a stationary coil, an electromotive force (EMF) is induced in the coil. In both cases, the value of the magnetic flux remains unchanged, but the number of magnetic fluxes linked to the coil changes; this is the principle of mutual induction. A transformer is a device that utilizes the electromagnetic mutual induction effect to transform voltage, current, and impedance.

[0003] Because electricity users frequently request the temporary suspension or shutdown of transformers, there is a risk that users may illegally connect to and use electricity after a transformer is shut down, if no measures are taken. Currently, it is impossible to seal the transformer's terminals, leading to unauthorized use of the transformer and potentially resulting in significant economic losses. Utility Model Content

[0004] This utility model addresses the problem of the inability to seal the terminals of a transformer, which leads to unauthorized use of the transformer by users, posing risks of unauthorized power connection and use, and resulting in significant economic losses. It proposes a detachable sealing device for a 10 kV distribution transformer.

[0005] This utility model discloses a detachable sealing device for a 10 kV distribution transformer, which consists of two steel plates 1, a nut 3 and a lead seal 4.

[0006] Two steel plates 1 are arranged opposite each other, and a nut 3 is provided at one end of the upper surface of each steel plate 1. A through hole 2 is machined at the center line of the other end of the upper surface of each steel plate 1, and the through holes 2 on the upper surfaces of the two steel plates 1 are locked and connected by a lead seal 4.

[0007] Furthermore, the lower end face of the nut 3 is welded and fixed to one end of the upper surface of the steel sheet 1;

[0008] Furthermore, the nut 3 is an M10 nut;

[0009] Furthermore, the steel sheet 1 has a length of 8cm, a width of 2.5cm, and a thickness of 0.2cm;

[0010] Furthermore, the wide end face of the steel sheet 1 connecting to the nut 3 is an arc surface;

[0011] Furthermore, the inner diameter of the through hole 2 on the steel sheet 1 is 0.4 cm;

[0012] Furthermore, during use, the nuts 3 on the two steel plates 1 are installed on the two adjacent terminals of the transformer, and the through holes 2 on the upper surface of the two steel plates 1 are locked together with lead seals 4. After short-circuiting the two phases of the transformer, the transformer will be unusable. In this way, the transformer can be sealed off to prevent users from using the transformer without authorization. It is easy to disassemble, clearly marked, and can be reused, thus recovering the economic losses caused by users' unauthorized use of the transformer.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This invention overcomes the shortcomings of existing technologies by employing two steel plates arranged opposite each other. Each steel plate has a nut at one end of its upper surface and a through hole machined at the center line of the other end of its upper surface. The through holes on the upper surfaces of the two steel plates are fixedly connected by a lead seal. In use, the nuts on the two steel plates are installed on two adjacent terminals of the transformer, and the through holes on the upper surfaces of the two steel plates are then fixedly connected by the lead seal. After short-circuiting two phases of the transformer, the transformer will be unusable. This device effectively seals the transformer, preventing unauthorized use and thus avoiding electrical risks caused by unauthorized wiring. It is easy to disassemble, clearly marked, and reusable, thereby mitigating economic losses caused by unauthorized transformer use. Attached Figure Description

[0015] Figure 1 This is a main sectional view of a detachable 10 kV distribution transformer sealing device according to the present invention.

[0016] Figure 2 This is a front view of the detachable 10 kV distribution transformer sealing device described in this utility model in use. Detailed Implementation

[0017] Specific implementation method one: Combining Figure 1 and Figure 2 This embodiment describes a detachable 10 kV distribution transformer sealing device, which consists of two steel plates 1, a nut 3, and a lead seal 4.

[0018] Two steel plates 1 are arranged opposite each other, and a nut 3 is provided at one end of the upper surface of each steel plate 1. A through hole 2 is machined at the center line of the other end of the upper surface of each steel plate 1, and the through holes 2 on the upper surfaces of the two steel plates 1 are locked and connected by a lead seal 4.

[0019] In this specific embodiment, when in use, the nuts 3 on the two steel plates 1 are respectively installed on the two adjacent terminals of the transformer, and the through holes 2 on the upper surface of the two steel plates 1 are locked and connected by lead seals 4. After short-circuiting the two phases of the transformer, the transformer will be unusable. In this way, the transformer can be sealed off to prevent users from using the transformer without authorization. It is easy to disassemble, clearly marked, and can be reused, thus recovering the economic losses caused by users using the transformer without authorization.

[0020] Specific Implementation Method Two: Combining Figure 1 and Figure 2 This embodiment further defines the sealing device described in Specific Embodiment 1. In this embodiment, a detachable 10 kV distribution transformer sealing device is provided, wherein the lower end face of the nut 3 is welded and fixed to one end of the upper surface of the steel sheet 1.

[0021] Specific implementation method three: Combining Figure 1 and Figure 2 This embodiment is a further limitation of the sealing device described in Specific Embodiment Two. In this embodiment, a detachable 10 kV distribution transformer sealing device is provided, and the nut 3 is an M10 nut.

[0022] Specific implementation method four: Combination Figure 1 and Figure 2 This embodiment further defines the sealing device described in Specific Embodiment Two. In this embodiment, a detachable 10 kV distribution transformer sealing device is provided, wherein the steel sheet 1 has a length of 8 cm, a width of 2.5 cm, and a thickness of 0.2 cm.

[0023] Specific Implementation Method Five: Combining Figure 1 and Figure 2 This embodiment further defines the sealing device described in Specific Embodiment Four. In this embodiment, the detachable 10 kV distribution transformer sealing device has a circular arc end face on the steel sheet 1 connecting to the nut 3.

[0024] Specific Implementation Method Six: Combination Figure 1 and Figure 2 This embodiment further defines the sealing device described in Specific Embodiment Five. In this embodiment, the inner diameter of the through hole 2 on the steel sheet 1 of the detachable 10 kV distribution transformer sealing device is 0.4 cm.

[0025] Working principle

[0026] When in use, the nuts 3 on the two steel plates 1 are installed on the two adjacent terminals of the transformer respectively. Then, the through holes 2 on the upper surface of the two steel plates 1 are locked and connected by the lead seal 4. After short-circuiting the two phases of the transformer, the transformer will be unusable. In this way, the transformer can be sealed off to prevent users from using the transformer without authorization. It is easy to disassemble, clearly marked, and can be reused, thus recovering the economic losses caused by users using the transformer without authorization.

Claims

1. A detachable sealing device for a 10 kV distribution transformer, characterized in that: It includes two steel plates (1), a nut (3) and a lead seal (4); Two steel plates (1) are arranged opposite each other, and a nut (3) is provided at one end of the upper surface of each steel plate (1). A through hole (2) is machined at the center line of the other end of the upper surface of each steel plate (1), and the through holes (2) on the upper surfaces of the two steel plates (1) are locked together by a lead seal (4).

2. The detachable 10 kV distribution transformer sealing device according to claim 1, characterized in that: The lower end face of the nut (3) is welded and fixed to one end of the upper surface of the steel sheet (1).

3. The detachable 10 kV distribution transformer sealing device according to claim 2, characterized in that: The nut (3) is an M10 nut.

4. The detachable 10 kV distribution transformer sealing device according to claim 2, characterized in that: The steel sheet (1) is 8cm long, 2.5cm wide, and 0.2cm thick.

5. The detachable 10 kV distribution transformer sealing device according to claim 4, characterized in that: The steel sheet (1) is connected to the nut (3) with a circular arc surface at the wide end.

6. The detachable 10 kV distribution transformer sealing device according to claim 5, characterized in that: The inner diameter of the through hole (2) on the steel sheet (1) is 0.4 cm.