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CN-121985526-A - Driver box body, driver and electric cabinet

CN121985526ACN 121985526 ACN121985526 ACN 121985526ACN-121985526-A

Abstract

The invention relates to a driver box body, a driver and an electric cabinet, wherein the driver box body comprises a metal box body and at least two metal shielding pieces arranged in the metal box body, each metal shielding piece divides a box cavity of the metal box body into at least three shielding areas, at least one box wall of the metal box body, which is used for enclosing the shielding areas, is provided with a heat dissipation structure, and the heat dissipation structure is used for being in heat conduction fit with a heat dissipation air duct of the electric cabinet provided with the driver box body. The box cavity of the metal box body can be divided into at least three shielding areas through the plurality of metal shielding pieces, mutual interference of internal electronic devices is avoided, the metal box body forms electromagnetic shielding isolation between the internal electronic devices of the driver and other equipment in the electric cabinet, the heat dissipation of the driver can be enhanced through heat conduction cooperation of the heat dissipation structure and the heat dissipation air duct of the electric cabinet, the internal temperature of the driver box body is reduced, and the purposes of meeting the electromagnetic shielding and heat dissipation requirements of the driver with multiple PCB circuit boards are achieved.

Inventors

  • ZHANG JIFU
  • WANG GUANYU
  • WANG JIAN

Assignees

  • 北京广利核系统工程有限公司

Dates

Publication Date
20260505
Application Date
20260318

Claims (13)

  1. 1. The utility model provides a driver box body, its characterized in that includes metal box body (110) and at least two set up in metal shield (120) in metal box body (110), each metal shield (120) will the box chamber of metal box body (110) is divided into at least three shielding zone, be provided with heat radiation structure (200) on the box wall that at least one of metal box body (110) is used for enclosing the shielding zone, heat radiation structure (200) are used for with install the heat dissipation wind channel heat conduction cooperation of the electric cabinet of driver box body (100).
  2. 2. The drive enclosure of claim 1, wherein the metal enclosure (110) comprises first and second cover plates (111, 112) spaced apart along a first direction, first and second side plates (113, 114) spaced apart along a second direction, and first and second panels (115, 116) spaced apart along a third direction; The first cover plate (111), the second cover plate (112), the first side plate (113), the second side plate (114), the first panel (115) and the second panel (116) enclose into the metal box body (110), and the first direction, the second direction and the third direction meet vertical conditions.
  3. 3. The drive cassette of claim 2, wherein three of the metallic shields (120) are a first shield (121), a second shield (122), and a third shield (123), respectively; The first shielding piece (121) and the second shielding piece (122) are arranged between the first side plate (113) and the second side plate (114) at intervals along a second direction so as to divide a box cavity of the driver box body into a first shielding area, a second shielding area and a third shielding area which are sequentially arranged along the directions from the first side plate (113) to the second side plate (114); the third shielding member (123) is arranged between the first panel (115) and the second panel (116) at intervals along a third direction, and the third shielding member (123) divides the second shielding region into a front shielding region close to the first panel (115) and a rear shielding region close to the second panel (116).
  4. 4. A driver box according to claim 3, wherein the front shielding area is a PCB display panel mounting area, the first panel (115) is provided with a viewing window (1151) corresponding to a digital display device (320) of the PCB display panel (300), the viewing window (1151) is blocked by a transparent shielding member (119), the first panel (115) is provided with an operation port corresponding to a hardware interface component (330) of the PCB display panel (300), and the operation port is blocked by a fourth shielding member (124) detachably connected to the first panel (115).
  5. 5. The drive enclosure of claim 4, wherein the first shielding region is a PCB control board mounting region, the first shielding region and the front shielding region communicate to form an L-shaped shielding region, and the first side plate (113), the first panel (115), the second side plate (114), the third shield (123), the first shield (121), and the second panel (116) enclose the L-shaped shielding region between the first cover plate (111) and the second cover plate (112).
  6. 6. The driver box of claim 5, wherein the rear shielding region is a power module mounting region, the rear shielding region is not communicated with the front shielding region, the first shielding region and the third shielding region, a wiring port is formed in a position of the second panel (116) corresponding to a wiring terminal of the power module (600), and the first shielding member (121), the second shielding member (122), the third shielding member (123) and the second panel (116) enclose the power module mounting region between the first cover plate (111) and the second cover plate (112).
  7. 7. The drive enclosure of claim 6, wherein the second shield (122) is a shield that is detachably connected to the second side plate (114) to enclose the third shield area, the third shield area being a PCB drive board mounting area, the third shield area not communicating with the front shield area, the first shield area, and the rear shield area.
  8. 8. The drive enclosure of claim 7, wherein the heat dissipation structure (200) includes a vent hole (210) disposed on the first cover plate (111) and the second cover plate (112) and a heat dissipation fin (220) disposed on a side of the second side plate (114) away from the first side plate (113), the vent hole (210) is at least in communication with the rear shielding region, the vent hole (210) is used for connecting the rear shielding region to a heat dissipation air duct of an electrical cabinet, a plurality of heat dissipation fins (220) are arranged at intervals along a third direction, the heat dissipation fins (220) extend along a first direction, and a gap between two adjacent heat dissipation fins (220) is used for connecting the heat dissipation air duct of the electrical cabinet; And/or, the inner walls of the first side plate (113), the second side plate (114) and the first panel (115) are provided with nut posts (118), and the nut posts (118) are used for being in threaded fit with mounting bolts (700) penetrating through mounting holes of the PCB, so that the nut posts (118) are in contact with conductive pads of the mounting holes of the PCB while supporting and fixing the PCB.
  9. 9. The drive cassette according to any one of claims 2-8, further comprising a support beam (117), the support beam (117) extending in a first direction, both ends of the support beam (117) being connected to the first cover plate (111) and the second cover plate (112), respectively; and/or the supporting beam (117) extends along a second direction, and two ends of the supporting beam (117) are respectively connected with the first side plate (113) and the second side plate (114); And/or the supporting beam (117) extends along a third direction, and two ends of the supporting beam (117) are respectively connected with the first panel (115) and the second panel (116).
  10. 10. A driver, comprising the driver box (100) according to any one of claims 3-8 and a PCB circuit board mounted in the driver box (100) by a screw mounting assembly, the screw mounting assembly comprising a nut post (118) and a mounting bolt (700), the nut post (118) being disposed on an inner wall of the metal box (110), the mounting bolt (700) penetrating through a mounting hole of the PCB circuit board to be screw-fitted with the nut post (118) so that the nut post (118) is in contact with a conductive pad of the mounting hole of the PCB circuit board while supporting and fixing the PCB circuit board.
  11. 11. The driver of claim 10, wherein the PCB circuit board includes a PCB display panel (300), a PCB control board (400), and a PCB drive board (500), the PCB display panel (300) is secured to the first panel (115) in the front shielding region by the threaded mounting assembly, the PCB control board (400) is secured to the first side panel (113) in the first shielding region by the threaded mounting assembly, the PCB display panel (300) is electrically connected to the PCB control board (400) by a first inter-board connector, and the PCB drive board (500) is secured to the second side panel (114) in the third shielding region by the threaded mounting assembly.
  12. 12. The driver according to claim 11, wherein a power device (510) is arranged on the PCB driving board (500), the power device (510) is attached to the inner wall of the second side board (114) through a pressing member, a heat dissipation structure (200) is arranged on the outer wall of the second side board (114), and a heat conduction pad (1000) is arranged between the power device (510) and the second side board (114); And/or, the PCB control board (400) comprises a parallel and spaced PCB interface board (410) and a PCB main control board (420), the PCB interface board (410) and the PCB main control board (420) are connected through a plurality of groups of threaded fastening components (800), the threaded fastening components (800) comprise fastening bolts (810), spacing columns (820) and fastening nuts (830), the fastening bolts (810) penetrate through the mounting holes of one of the PCB interface board (410) and the PCB main control board (420), the spacing columns (820) and the mounting holes of the other of the PCB interface board (410) and the PCB main control board (420) and the fastening nuts (830) in threaded fit, the spacing columns (820) are respectively contacted with the conductive pads of the mounting holes of the PCB interface board (410) and the PCB main control board (420), the PCB main control board (420) and the display operation board (300) are electrically connected through the first inter-board connector, and the PCB interface board (410) and the second inter-PCB connector (430) are electrically connected through the PCB interface board (420).
  13. 13. An electrical cabinet, wherein the actuator of any one of claims 10-12 is disposed in the electrical cabinet, and a vent (210) of the actuator is in communication with a heat dissipation duct of the electrical cabinet.

Description

Driver box body, driver and electric cabinet Technical Field The invention relates to the technical field of electrical equipment, in particular to a driver box body, a driver and an electrical cabinet. Background The motor driver is a core electronic device for controlling the operation of the motor, and is used for receiving a weak current control signal from the main controller, analyzing and amplifying the weak current control signal into a strong current power signal capable of driving the motor to operate. The motor driver for the reactor adapts to the three-phase hybrid stepper motor of the nuclear power plant, the three-phase hybrid stepper motor belongs to a high-performance motor with precise structure and complex control, 4 printed circuit boards (Printed Circuit Board, PCBs) and 1 power module are needed to be equipped in the box body of the driver, wherein the PCB mainly comprises a PCB interface board, a PCB main control board, a PCB display operation board and a PCB driving board, the power module and the PCB driving board have stronger electromagnetic radiation, the box body of the driver needs to respectively carry out electromagnetic shielding on the power module and the PCB driving board so as to avoid mutual interference between the power module and the PCB driving board and interference between the power module and other electronic equipment, and meanwhile, the PCB driving board and the power module can generate more heat during operation, so that the temperature in the box body of the driver is increased. However, the existing driver box body is small in size, the design of the internal space is unreasonable, and the electromagnetic shielding and heat dissipation requirements of the driver with multiple PCB circuit boards are difficult to meet. Disclosure of Invention A first object of the present invention is to provide a driver box, so as to meet the requirements of electromagnetic shielding and heat dissipation of a driver of a multi-PCB circuit board. A second object of the present invention is to provide a drive and an electrical cabinet comprising the above-mentioned drive casing. In order to achieve the above purpose, the present invention provides the following technical solutions: in a first aspect of the present application, there is provided a driver box, including a metal box and at least two metal shields disposed in the metal box, each of the metal shields dividing a box cavity of the metal box into at least three shielding areas, at least one of the metal boxes being configured to enclose the shielding areas, a heat dissipation structure being disposed on a box wall of the metal box, the heat dissipation structure being configured to be in heat conduction fit with a heat dissipation air duct of an electrical cabinet in which the driver box is mounted. Based on the first aspect, in one possible implementation manner, the metal box body includes a first cover plate and a second cover plate which are arranged at intervals along a first direction, a first side plate and a second side plate which are arranged at intervals along a second direction, and a first panel and a second panel which are arranged at intervals along a third direction; the first cover plate, the second cover plate, the first side plate, the second side plate, the first panel and the second panel enclose the metal box body, and the first direction, the second direction and the third direction meet the vertical condition. Based on the first aspect, in one possible implementation manner, three of the metal shields are a first shield, a second shield, and a third shield, respectively; The first shielding piece and the second shielding piece are arranged between the first side plate and the second side plate at intervals along the second direction so as to divide a box cavity of the driver box body into a first shielding area, a second shielding area and a third shielding area which are sequentially arranged along the directions from the first side plate to the second side plate; The third shielding member is arranged between the first panel and the second panel along a third direction at intervals, and divides the second shielding region into a front shielding region close to the first panel and a rear shielding region close to the second panel. Based on the first aspect, in one possible implementation manner, the front shielding area is a mounting area of the PCB display operation board, the first panel is provided with a window corresponding to a position of a digital display device of the PCB display operation board, the window is plugged by a transparent shielding piece, the first panel is provided with an operation port corresponding to a position of a hardware interface component of the PCB display operation board, and the operation port is detachably connected with a fourth shielding piece of the first panel. Based on the first aspect, in one possible implementation manner, the first shielding area is