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CN-224218097-U - Ring main unit temperature measurement plug

CN224218097UCN 224218097 UCN224218097 UCN 224218097UCN-224218097-U

Abstract

The utility model discloses a ring main unit temperature measurement plug, which belongs to the technical field of temperature measurement plugs and comprises a base and a circuit board, wherein a shell is arranged on the outer side wall of the base, a rectangular groove is formed in one side of the base, an overheat protection component is arranged on the other side of the base, a metal connecting piece is arranged at one end, far away from the base, of the shell, an electromagnetic induction component is arranged at one end, located inside the shell, of the metal connecting piece, and the circuit board is arranged in the overheat protection component. According to the utility model, the electromagnetic induction component is arranged, the suspension capacitor is formed by the cylindrical electrode plate, the metal connecting piece and the epoxy resin, the alternating electric field is used for supplying power to the circuit board and the energy storage capacitor group, passive work is realized, the stress concentration of the cylindrical electrode plate is reduced by the round hole, and the micro electromagnet is electrified by the circuit board after the temperature of 80 ℃ or more is detected by arranging the overheat protection component, so that the reset spring is compressed by the adsorption mounting ring, the circuit board is driven to be separated from the heat conduction copper sheet, and the heat conduction path is blocked.

Inventors

  • HE FUJIAN
  • PEI WEI
  • GENG JIAN
  • LIU HUIPING
  • DI ZENGMING

Assignees

  • 南京亚电电力自动化有限公司

Dates

Publication Date
20260508
Application Date
20250414

Claims (6)

  1. 1. The utility model provides a looped netowrk cabinet temperature measurement plug, includes base (1) and circuit board (2), its characterized in that, lateral wall fixedly connected with shell (3) of base (1), rectangular channel (4) have been seted up to one side of base (1), the opposite side of base (1) is provided with overheat protection subassembly, the one end fixedly connected with metal connecting piece (5) of the one end that base (1) was kept away from to shell (3), the one end that metal connecting piece (5) are located the inside of shell (3) is provided with electromagnetic induction subassembly; The overheat protection component comprises a cylinder body (6) and a micro electromagnet (7), wherein a mounting ring (8) is arranged in the cylinder body (6) in a sliding manner, the circuit board (2) is fixedly arranged on one side, facing the metal connecting piece (5), of the mounting ring (8), and a reset spring (9) is arranged between the mounting ring (8) and the base (1); One side of the circuit board (2) far away from the metal connecting piece (5) is fixedly provided with a spring antenna (201) and an energy storage capacitor group (202), and the other side of the circuit board (2) is fixedly provided with a temperature measuring contact (203).
  2. 2. The ring main unit temperature measurement plug of claim 1, wherein the micro electromagnet (7) is located in the center of one end, close to the base (1), of the cylinder (6), the micro electromagnet (7) is fixedly connected with the base (1), and the micro electromagnet (7) is electrically connected with the circuit board (2).
  3. 3. The ring main unit temperature measurement plug of claim 1, wherein one end of the return spring (9) is fixedly connected with the surface of the base (1), and the other end of the return spring (9) is fixedly connected with one side, far away from the circuit board (2), of the mounting ring (8).
  4. 4. The ring main unit temperature measurement plug of claim 1, wherein one end of the metal connecting piece (5) located outside the shell (3) is provided with threads, the outer side wall and the end part of the other end of the metal connecting piece (5) are welded with bent heat conduction copper sheets (10), the surface of the heat conduction copper sheets (10) located outside the metal connecting piece (5) is welded with wires (11), and the wires (11) are electrically connected with the circuit board (2).
  5. 5. The ring main unit temperature measurement plug of claim 1, wherein the electromagnetic induction component comprises a cylindrical electrode plate (12) and a paper ring (13), the diameter of the cylindrical electrode plate (12) is smaller than that of the mounting ring (8), the inner wall of one end of the cylindrical electrode plate (12) is adhered to the outer wall of the paper ring (13), the inner wall of the paper ring (13) is adhered to the outer wall of the metal connecting piece (5), and epoxy resin (14) is filled between the cylindrical electrode plate (12) and the metal connecting piece (5).
  6. 6. The ring main unit temperature measurement plug according to claim 5, wherein the outer wall of the cylindrical electrode plate (12) is provided with a plurality of round holes (15).

Description

Ring main unit temperature measurement plug Technical Field The utility model relates to the technical field of temperature measurement plugs, in particular to a ring main unit temperature measurement plug. Background The ring main unit is generally used in a power distribution system, equipment and elements therein can be in fault or overheat after long-time operation, particularly, a connector part in the main unit body is often a fault point, and the temperature condition in the ring main unit can be monitored in real time by arranging a temperature sensor at the plug position of the ring main unit, and when the temperature is abnormally increased, the alarm is given out timely and measures are taken to prevent the occurrence of safety accidents such as equipment damage and fire disaster; The temperature measuring plug is characterized in that a circuit board integrated with a temperature measuring element is arranged in the existing temperature measuring plug, the temperature of a temperature measuring contact point of the circuit board can be directly conducted to the circuit board, the high-temperature critical temperature of the circuit board, which is easy to generate faults, is between 80 and 120 ℃, but the abnormal temperature value of the cable joint of the ring main unit is also between 80 and 120 ℃, so that the faults such as integrated circuit failure, lead welding point fracture and the like easily occur after the existing temperature measuring plug works for a long time, and the temperature measuring plug is further failed and needs to be replaced frequently; therefore, a ring main unit temperature measurement plug is provided to solve the above problems. Disclosure of utility model The utility model aims to solve the problem that a temperature measuring plug is easy to fail after long-time working in the prior art, and provides a ring main unit temperature measuring plug. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a looped netowrk cabinet temperature measurement end cap, includes base and circuit board, the lateral wall fixedly connected with shell of base, rectangular channel has been seted up to one side of base, the opposite side of base is provided with overheat protection subassembly, the one end that the base was kept away from to the shell is fixedly connected with metal connecting piece, the one end that metal connecting piece is located the inside of shell is provided with electromagnetic induction subassembly; The overheat protection component comprises a cylinder body and a miniature electromagnet, a mounting ring is arranged in the cylinder body in a sliding manner, the circuit board is fixedly arranged on one side, facing the metal connecting piece, of the mounting ring, and a reset spring is arranged between the mounting ring and the base; The circuit board is far away from one side of the metal connecting piece and is fixedly provided with a spring antenna and an energy storage capacitor group, and the other side of the circuit board is fixedly provided with a temperature measuring contact. Preferably, the micro electromagnet is located at the center of one end of the cylinder body, which is close to the base, and is fixedly connected with the base, and the micro electromagnet is electrically connected with the circuit board. Preferably, one end of the return spring is fixedly connected with the surface of the base, and the other end of the return spring is fixedly connected with one side, far away from the circuit board, of the mounting ring. Preferably, one end of the metal connecting piece, which is positioned outside the shell, is provided with threads, the outer side wall and the end part of the other end of the metal connecting piece are welded with a bent heat conducting copper sheet, the surface of the heat conducting copper sheet, which is positioned outside the metal connecting piece, is welded with a wire, and the wire is electrically connected with the circuit board. Preferably, the electromagnetic induction assembly comprises a cylindrical electrode plate and a paper ring, the diameter of the cylindrical electrode plate is smaller than that of the mounting ring, the inner wall of one end of the cylindrical electrode plate is bonded with the outer wall of the paper ring, the inner wall of the paper ring is bonded with the outer wall of the metal connecting piece, and epoxy resin is filled between the cylindrical electrode plate and the metal connecting piece. Preferably, a plurality of round holes are formed in the outer wall of the cylindrical electrode slice. Compared with the prior art, the utility model has the beneficial effects that: 1. According to the utility model, the electromagnetic induction component is arranged, the suspension capacitor is formed by the cylindrical electrode plate, the metal connecting piece and the epoxy resin, the induction current is generated