Search

CN-121978371-A - Load cabinet for testing power supply characteristics of laboratory

CN121978371ACN 121978371 ACN121978371 ACN 121978371ACN-121978371-A

Abstract

The invention discloses a load cabinet for testing the power supply characteristics of a laboratory, which relates to the technical field of heat dissipation devices, and comprises a heat dissipation assembly, wherein the heat dissipation assembly is provided with a detection assembly, the heat dissipation assembly comprises a heat dissipation base, a plurality of heat dissipation fins which are linearly arranged are arranged on the heat dissipation base, an adjusting device is further arranged on the heat dissipation base, a plurality of blind holes which are linearly arranged are arranged on the heat dissipation base, the heat dissipation fins are positioned on the blind holes, through holes which are correspondingly communicated with the blind holes are arranged on the heat dissipation fins, the center lines of the through holes and the blind holes are in the same straight line, the blind holes and the corresponding through hole structures jointly form a resonance structure for consuming vibration energy, each blind hole corresponds to one through hole, and the diameter of the through hole is smaller than that of the blind hole.

Inventors

  • MU CHENGLONG
  • Jiang Luoming
  • XIANG XIAOCHENG
  • LI ZHICHENG

Assignees

  • 佛山市沃特测试技术服务有限公司

Dates

Publication Date
20260505
Application Date
20260227

Claims (8)

  1. 1. The load cabinet for testing the power supply characteristics of the laboratory is characterized by comprising a heat dissipation assembly (5), wherein a detection assembly (4) is arranged on the heat dissipation assembly (5); The heat dissipation assembly (5) comprises a heat dissipation base (51), wherein a plurality of heat dissipation fins (52) which are linearly arranged are arranged on the heat dissipation base (51), and an adjusting device (53) is further arranged on the heat dissipation base (51); The heat dissipation base (51) is provided with a plurality of blind holes (511) which are linearly arranged, the heat dissipation fins (52) are positioned on the surface of the blind holes (511), the heat dissipation fins (52) are provided with through holes (521) which are correspondingly communicated with the blind holes (511), the center lines of the through holes (521) and the center lines of the blind holes (511) are the same straight line, and the blind holes (511) and the corresponding through holes (521) form a resonance structure for consuming vibration energy; Each blind hole (511) corresponds to a through hole (521), and the diameter of the through hole (521) is smaller than that of the blind hole (511).
  2. 2. The load cabinet for testing the power supply characteristics of the laboratory of claim 1, wherein the heat dissipation base (51) is further provided with a mounting hole (512), an adjusting device (53) is arranged in the mounting hole (512), and the mounting hole (512) is communicated with the blind hole (511); The adjusting device (53) is used for adjusting the depth of the cavity in the blind hole (511).
  3. 3. The load cabinet for testing the power supply characteristics of the laboratory according to claim 1, wherein the adjusting device (53) comprises an adjusting cylinder (531), a piston (532) is arranged at the output end of the adjusting cylinder (531), and the piston (532) is arranged in the blind hole (511); the piston (532) is attached to the blind hole (511).
  4. 4. The load cabinet for testing the power supply characteristics of the laboratory according to claim 1, wherein the detection assembly (4) comprises a detection body (41); a first mounting cavity (411) is arranged on the detection body (41); The first mounting cavity (411) is provided with a detection magnet (42), and the detection magnet (42) is in sliding connection with the first mounting cavity (411); and springs (43) are arranged at two ends of the detection magnet (42).
  5. 5. The load cabinet for testing the power supply characteristics of the laboratory of claim 4, wherein the detecting body (41) is further provided with a second installation cavity (412), the second installation cavity (412) is arranged outside the first installation cavity (411), and a detecting coil (44) is arranged in the second installation cavity (412); The detection coil (44) is electrically connected with the adjusting cylinder (531); the induced current generated by the detection coil (44) is proportional to the vibration of the detection magnet (42).
  6. 6. The load cabinet for testing the power supply characteristics of the laboratory of claim 1, wherein the load cabinet further comprises a cabinet body (1), and a plurality of cooling fans (2) which are arranged in a linear manner are further arranged on the cabinet body (1).
  7. 7. The load cabinet for testing the power supply characteristics of the laboratory, as set forth in claim 6, wherein a plurality of test boxes (3) are arranged in the cabinet body (1), the test boxes (3) are connected with the test bodies (41), the test boxes (3) are connected with the heat dissipation base (51), the plurality of the test bodies (41) are arranged on the test boxes (3) in a linear manner, the plurality of the heat dissipation base (51) are arranged on the test boxes (3) in a linear manner.
  8. 8. The load cabinet for testing the power supply characteristics of the laboratory of claim 7, wherein the cooling fan (2) and the adjacent test box (3) are positioned at the same height.

Description

Load cabinet for testing power supply characteristics of laboratory Technical Field The invention relates to the technical field of heat dissipation devices, in particular to a load cabinet for testing power supply characteristics of a laboratory. Background In the laboratory power characteristic test, the load cabinet is core equipment for simulating the actual work load of a power supply, accurately detecting key parameters such as voltage stability, current output characteristics, overload capacity and the like, the running state of the load cabinet directly influences the reliability of test data, along with the rapid development of industries such as new energy, electronic communication and the like, the laboratory needs to cope with the multi-scene test requirements from a small-power portable power supply to a high-power industrial power supply, the running power span of the load cabinet is continuously increased, and the heat generated during working is also rapidly increased. At present, a laboratory load cabinet mostly adopts air cooling heat dissipation, but the existing structure has obvious technical defects, air cooling heat dissipation airflow, a heat dissipation base and heat dissipation fins are easy to vibrate due to high-speed friction, high-frequency noise formed by vibration diffusion not only damages a laboratory low-noise working environment, but also can interfere with a test circuit through structural mechanical resonance to cause data deviation, meanwhile, when the power of the load cabinet changes, the rotating speed of a heat dissipation fan can be correspondingly adjusted, the vibration frequency caused by airflow can also be dynamically changed, the traditional heat dissipation structure lacks an adaptation mechanism, vibration reduction parameters cannot be adjusted in a targeted mode, and vibration and noise are difficult to effectively control. Disclosure of Invention The invention aims to solve the technical problem that vibration and noise caused by different power air cooling heat dissipation are difficult to suppress, and provides a load cabinet for testing the power supply characteristics of a laboratory. In order to solve the technical problems, the invention provides the following technical scheme: The load cabinet for testing the power supply characteristics of the laboratory comprises a heat dissipation assembly, wherein a detection assembly is arranged on the heat dissipation assembly; The heat radiation assembly comprises a heat radiation base, a plurality of heat radiation fins which are linearly arranged are arranged on the heat radiation base, and an adjusting device is further arranged on the heat radiation base; The heat dissipation base is provided with a plurality of blind holes which are linearly arranged, the heat dissipation fins are positioned on the surfaces of the blind holes, the heat dissipation fins are provided with through holes which are correspondingly communicated with the blind holes, the center lines of the through holes and the center lines of the blind holes are in the same straight line, and the blind holes and the corresponding through hole structures jointly form a mechanical resonance structure for consuming vibration energy; Each blind hole corresponds to a perforation, and the diameter of the perforation is smaller than that of the blind hole. When the load cabinet starts to work, a large amount of heat is generated, then air cooling and heat dissipation are carried out on the load cabinet, air flow generated by air cooling operation flows through the heat dissipation fins, so that a large amount of heat on the heat dissipation fins is taken away, meanwhile, friction between the air flow and the heat dissipation base and friction between the air flow and the heat dissipation fins can induce vibration, the vibration is transmitted to a mechanical resonance structure formed by the blind hole and the perforation together through the heat dissipation base, as the blind hole is collinear with the center line of the perforation, vibration energy can form resonance waves with specific frequency in a closed cavity of the blind hole and a perforation through channel, the resonance waves are reflected at the boundary of the cavity and the channel, so that the vibration energy is gradually dissipated, meanwhile, the single perforation arranged can ensure stable conduction path of the resonance waves, the vibration energy dissipation efficiency is improved, the whole vibration amplitude of the heat dissipation assembly is effectively reduced, noise generated by air cooling and heat resistance caused by noise is reduced, and the heat dissipation efficiency is improved. Furthermore, the heat dissipation base is also provided with a mounting hole, an adjusting device is arranged in the mounting hole, and the mounting hole is communicated with the blind hole; the adjusting device is used for adjusting the depth of the cavity in the blind hole. When