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CN-121985524-A - Anti-interference shielding partition board of electric energy metering box

CN121985524ACN 121985524 ACN121985524 ACN 121985524ACN-121985524-A

Abstract

The invention relates to the technical field of intelligent power grids and discloses an anti-interference shielding partition board of an electric energy metering box, which comprises a shielding partition board, wherein a gas flow channel for conducting gas is arranged in the shielding partition board, an exhaust mechanism for driving the gas to flow is arranged in the gas flow channel, a sealing baffle for opening and closing a gas inlet of the gas flow channel is arranged at the bottom of the shielding partition board, a temperature sensing mechanism for responding to temperature change and mechanically linking is also arranged at the bottom of the shielding partition board, and the temperature sensing mechanism is simultaneously connected with and drives the opening and closing of the sealing baffle and the opening and closing of the exhaust mechanism.

Inventors

  • XUE JINYU
  • WANG XIAOLONG
  • WANG XIAOPENG

Assignees

  • 河南中盟电气设备有限公司

Dates

Publication Date
20260505
Application Date
20260202

Claims (10)

  1. 1. The anti-interference shielding partition board of the electric energy metering box comprises a cabinet body (1), wherein a weak current area (11) and a strong current area (12) are arranged in the cabinet body (1), the electric energy metering box is characterized in that a shielding partition board (2) used for separating and electromagnetically shielding is arranged between the weak current area (11) and the strong current area (12), a gas flow channel (21) used for conducting gas is arranged in the shielding partition board (2), an exhaust mechanism (3) used for driving gas to flow is arranged in the gas flow channel (21), a sealing baffle (22) used for opening and closing an air inlet of the gas flow channel (21) is arranged at the bottom of the shielding partition board (2), a temperature sensing mechanism (4) used for responding to temperature change and mechanically linking is further arranged at the bottom of the shielding partition board (2), and the temperature sensing mechanism (4) is simultaneously connected with and drives opening and closing of the sealing baffle (22) and opening and closing of the exhaust mechanism (3).
  2. 2. The anti-interference shielding partition board of the electric energy metering box according to claim 1, wherein the gas flow channels (21) are symmetrically arranged in the shielding partition board (2), the gas flow channels (21) at least comprise two independent and symmetrically arranged branches, and the shielding partition board (2) is provided with exhaust ports (23) for guiding out gas outside the cabinet body (1) corresponding to the tail end positions of the branches.
  3. 3. The anti-interference shielding partition board of an electric energy metering box according to claim 2, wherein the temperature sensing mechanism (4) comprises a fixed pipe (41) symmetrically arranged at the bottom of the shielding partition board (2), a push rod (42) capable of axially moving along the fixed pipe (41) is arranged in the fixed pipe (41), a temperature sensing material capable of expanding and contracting along with temperature is arranged between the push rod (42) and the fixed pipe (41), a connecting block (43) is fixed at the tail end of the push rod (42), the connecting block (43) is hinged with one corner of a sealing baffle plate (22) through a connecting rod (45), two sides of the fixed pipe (41) are respectively hinged with a movable connecting rod group (44), one end of the movable connecting rod group (44) is hinged with the connecting block (43), and the other end of the movable connecting rod group is hinged with the outer wall of the fixed pipe (41).
  4. 4. The anti-interference shielding partition plate of the electric energy metering box according to claim 3, wherein when the temperature sensing material is heated and expanded, the push rod (42) is pushed to move outwards, the push rod (42) drives the connecting block (43) to move, and the sealing baffle plate (22) is driven to rotate around the rotating shaft through the connecting rod (45) so as to open the air inlet of the air flow channel (21).
  5. 5. The anti-interference shielding partition board of an electric energy metering box according to claim 4, wherein the movable connecting rod group (44) is formed by hinging two rod pieces with each other, a vertical rod (46) is arranged at the hinging position of the center of the movable connecting rod group (44), the top of the vertical rod (46) is hinged with the air exhaust mechanism (3), and when the vertical rod (46) moves, the air exhaust mechanism (3) is driven to start and stop.
  6. 6. The anti-interference shielding partition board of an electric energy metering box according to claim 5, wherein when the push rod (42) moves outwards, the connecting block (43) is driven to move, the connecting block (43) pulls the movable connecting rod group (44) to enable the central hinged position of the movable connecting rod group (44) to move towards the fixed pipe (41), and further the vertical rod (46) is driven to move towards the fixed pipe (41).
  7. 7. The anti-interference shielding partition board of an electric energy metering box according to claim 6, wherein the air exhausting mechanism (3) comprises a movable baffle plate (31) arranged in a branch of the air flow channel (21) and used for adjusting on-off of the air flow channel, one end of the movable baffle plate (31) is provided with a control rod (32), the bottom of the control rod (32) is hinged with a vertical rod (46), and a rotating part (33) used for driving air to flow is arranged at the junction of the branch of the air flow channel (21).
  8. 8. The anti-interference shielding partition plate of the electric energy metering box according to claim 7, wherein the rotating part (33) comprises a fan blade (331) rotatably arranged at a junction of branches of the air flow channel (21), a first magnet (332) is arranged at the bottom of the fan blade (331), the first magnet (332) is coaxially fixed with the fan blade (331), a second magnet (333) is arranged at one side of the first magnet (332), the first magnet (332) and the second magnet (333) transmit driving force through magnetic force, and the second magnet (333) is connected with the movable baffle plate (31) through a linkage mechanism (5).
  9. 9. The anti-interference shielding separator for an electric energy metering box according to claim 8, wherein the linkage mechanism (5) comprises a first protruding block (51) arranged on one side of the movable baffle plate (31) close to a second magnet (333), a second protruding block (52) is arranged on one side of the second magnet (333) close to the movable baffle plate (31), contact surfaces of the first protruding block (51) and the second protruding block (52) are mutually matched inclined surfaces, and the second protruding block (52) is connected with the inner wall of the gas flow channel (21) through an elastic piece.
  10. 10. The anti-interference shielding partition board of the electric energy metering box according to claim 9, wherein when the vertical rod (46) moves towards the direction of the fixed pipe (41), the movable baffle (31) is driven to move towards the center of the gas flow channel (21) to open the branch, meanwhile, the first protruding block (51) is driven to move, the first protruding block (51) pushes the second protruding block (52) through the inclined surface of the first protruding block, so that the second magnet (333) moves towards the first magnet (332) against the resistance of the elastic piece, and the magnetic force between the second magnet (333) and the first magnet (332) drives the first magnet (332) and the fan blade (331) to rotate.

Description

Anti-interference shielding partition board of electric energy metering box Technical Field The invention relates to the technical field of intelligent power grids, in particular to an anti-interference shielding partition board of an electric energy metering box. Background Along with the deep construction of the smart power grid, the electric energy metering box is used as a key data acquisition node, the inside of the electric energy metering box is usually required to be divided into a strong current area and a weak current area, the strong current area comprises a large current device such as a circuit breaker and a mutual inductor, remarkable electromagnetic interference and heat are generated during working, and high-sensitivity electronic equipment such as a microprocessor and a communication module are installed in the weak current area, so that the electric energy metering box is extremely easily influenced by electromagnetic interference and high temperature to work and is even damaged. Therefore, a shielding partition plate with electromagnetic shielding and physical isolation functions is arranged between strong and weak current areas, so that the shielding partition plate has become a standard design for guaranteeing the reliable operation of the metering box. At present, most of common shielding partition plates are integral metal plates, and the design can provide good electromagnetic shielding effect, but also exposes a fundamental technical contradiction, namely, the conflict between shielding integrity and effective heat dissipation is ensured. Specifically, to meet the strict requirements of electromagnetic shielding, the separator must maintain structural electrical continuity and physical sealing, which directly blocks the natural convection path of hot air in the strong electric area, resulting in heat accumulation below the separator, exacerbating the temperature rise in the tank, and secondly, the accumulated heat can cause the temperature of the metal separator body to be obviously raised, so that the metal separator body becomes a continuous heat radiation source, and the heat radiation from the separator body can directly act on weak electric area equipment above to form continuous heat load, thereby solving the electromagnetic interference problem and introducing new difficult-to-eliminate heat interference problem. In order to solve the heat dissipation problem, some improvements try to open heat dissipation holes on the partition board or add forced air cooling, however, the integrity of electromagnetic shielding can be directly damaged by simple holes, the electromagnetic shielding effect is reduced, and active heat dissipation devices such as fans are introduced, so that not only is the energy consumption increased, but also the reliability is reduced, and the motor running itself can become a new electromagnetic interference source. Therefore, the existing technical scheme is difficult to effectively lead out the heat of the strong current region and prevent the separator from becoming a secondary heat source without sacrificing the electromagnetic shielding efficiency, and the art needs a separator structure capable of intelligently adjusting and cooperatively solving the dual requirements of electromagnetic shielding and heat lead-out according to the temperature. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides the anti-interference shielding partition board of the electric energy metering box, which can effectively solve the problems existing in the prior art. In order to achieve the above purpose, the invention is realized by the following technical scheme: The invention provides an anti-interference shielding partition board of an electric energy metering box, which comprises a cabinet body, wherein a weak current area and a strong current area are arranged in the cabinet body, a shielding partition board for separating and electromagnetically shielding is arranged between the weak current area and the strong current area, a gas flow channel for conducting gas is arranged in the shielding partition board, an exhaust mechanism for driving the gas to flow is arranged in the gas flow channel, a sealing baffle for opening and closing an air inlet of the gas flow channel is arranged at the bottom of the shielding partition board, a temperature sensing mechanism for responding to temperature change and mechanically linking is also arranged at the bottom of the shielding partition board, and the temperature sensing mechanism is simultaneously connected with and drives the opening and closing of the sealing baffle and the starting and stopping of the exhaust mechanism. Further, the gas flow channel is symmetrically arranged in the shielding partition plate, the gas flow channel at least comprises two independent and symmetrically arranged branches, the shielding partition plate corresponds to the tail end position of each branch,