Load cabinet for laboratory power supply characteristic test

Abstract

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

Description

Technical Field

[0001] This invention relates to the field of heat dissipation device technology, specifically a load cabinet for laboratory power supply characteristic testing. Background Technology

[0002] In laboratory power supply characteristic testing, the load cabinet is the core equipment for simulating the actual working load of the power supply and accurately detecting key parameters such as voltage stability, current output characteristics and overload capacity. Its operating status directly affects the reliability of test data. With the rapid development of industries such as new energy and electronic communications, laboratories need to meet the testing needs of multiple scenarios, from small-power portable power supplies to high-power industrial power supplies. The operating power range of the load cabinet is constantly increasing, and the heat generated during operation is also increasing dramatically.

[0003] Currently, most laboratory load cabinets use air cooling for heat dissipation. However, the existing structure has obvious technical defects. The high-speed friction between the air cooling airflow and the heat dissipation base and fins can easily cause vibration. The high-frequency noise generated by the vibration not only disrupts the low-noise working environment of the laboratory, but may also interfere with the test circuit through structural mechanical resonance, leading to data deviation. At the same time, when the power of the load cabinet changes, the speed of the cooling fan will be adjusted accordingly, and the vibration frequency caused by the airflow will also change dynamically. However, traditional heat dissipation structures lack an adaptation mechanism and cannot adjust the vibration reduction parameters in a targeted manner, making it difficult to effectively control vibration and noise. Summary of the Invention

[0004] The technical problem to be solved by this invention is that it is difficult to suppress the vibration and noise caused by air cooling at different power levels, and provides a load cabinet for laboratory power supply characteristic testing.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A load cabinet for testing laboratory power supply characteristics includes a heat dissipation assembly, on which a detection assembly is mounted. The heat dissipation assembly includes a heat dissipation base, on which several linearly arranged heat dissipation fins are provided, and an adjustment device is also provided on the heat dissipation base; The heat dissipation base has several linearly arranged blind holes, the heat dissipation fins are located on the surface of the blind holes, and the heat dissipation fins have through holes that are connected to the blind holes. The center line of the through holes and the center line of the blind holes are the same straight line. The blind holes and the corresponding through hole structures together constitute a mechanical resonance structure for dissipating vibration energy. Each blind hole corresponds to a perforation, and the diameter of the perforation is smaller than the diameter of the blind hole.

[0006] When the load cell starts working, it generates a large amount of heat, which is then dissipated through air cooling. The airflow generated by the air cooling operation flows through the heat sink fins, carrying away a significant amount of heat. Simultaneously, the friction between the airflow and the heat sink base and fins induces vibration. This vibration is transmitted through the heat sink base to the mechanical resonance structure formed by the blind holes and perforations. Since the center lines of the blind holes and perforations are collinear, the vibration energy forms a specific frequency resonance wave within the closed cavity of the blind hole and the through channel of the perforation. The resonance wave is reflected at the boundary between the cavity and the channel, causing the vibration energy to gradually dissipate. At the same time, the single perforation ensures the stability of the resonance wave transmission path, improving the vibration energy dissipation efficiency and effectively reducing the overall vibration amplitude of the heat dissipation component. This reduces the noise generated by air cooling and also reduces the thermal resistance caused by noise, thereby improving the heat dissipation efficiency.

[0007] Furthermore, the heat dissipation base is also provided with mounting holes, and an adjustment device is provided inside the mounting holes. The mounting holes are connected to blind holes. The adjustment device is used to adjust the depth of the cavity inside the blind hole.

[0008] When the operating power of the load cabinet changes, the speed of the cooling fan will be adjusted accordingly, which will cause the vibration frequency caused by airflow to change. At this time, the cavity depth in the blind hole is adjusted by the adjustment device, so that the vibration frequency of the blind hole is close to the vibration frequency of the load cabinet. This makes the vibration frequencies of the blind hole and the load cabinet match, ensuring that the resonant structure can efficiently dissipate vibration energy and maintain the low vibration and low noise state of the heat dissipation component.

[0009] Furthermore, the adjusting device includes an adjusting cylinder, and a piston is provided on the output end of the adjusting cylinder, with the piston placed inside a blind hole; The piston and the blind hole fit together.

[0010] When it is necessary to adjust the vibration frequency of the blind hole, the output end of the adjusting cylinder pushes the piston to move along the axial direction of the blind hole. Since the piston is in close contact with the inner wall of the blind hole, the movement of the piston directly changes the effective depth of the closed cavity inside the blind hole. When the load cabinet tests a high-power power supply, which leads to an increase in heat dissipation power and thus an increase in vibration, the adjusting cylinder drives the piston to move towards the top of the blind hole, reducing the cavity depth and increasing the vibration frequency of the mechanical resonance structure to match the new vibration frequency. Conversely, when testing a low-power power supply, the piston moves away from the top, increasing the cavity depth to reduce the vibration frequency, ensuring that the mechanical resonance structure can always dissipate the current vibration energy in a targeted manner.

[0011] Furthermore, the detection component includes a detection body; The detection body is provided with a first mounting cavity; A detection magnet is provided inside the first mounting cavity, and the detection magnet is slidably connected to the first mounting cavity; The detection magnet has springs at both ends.

[0012] When the heat dissipation component vibrates, the vibration is transmitted to the detection body. The vibration of the detection body causes the detection magnet in the first mounting cavity to vibrate synchronously. Since the detection magnet is connected to springs at both ends, the springs will expand and contract with the vibration, forming an elastic constraint on the detection magnet. This causes the detection magnet to slide back and forth in the vibration direction within the first mounting cavity. During the sliding process, the displacement of the detection magnet is proportional to the vibration amplitude, and its sliding frequency matches the vibration frequency, thus reflecting the vibration frequency of the test box.

[0013] Furthermore, the detection body is also provided with a second mounting cavity, which is located outside the first mounting cavity, and a detection coil is provided inside the second mounting cavity; The detection coil and the regulating cylinder are electrically connected; The induced current generated by the detection coil is proportional to the vibration of the detection magnet.

[0014] When the detection magnet slides back and forth within the first mounting cavity as it vibrates, the magnetic field around it changes with the sliding motion. This changing magnetic field passes through the detection coil in the second mounting cavity, inducing an electromotive force and current in the coil that correspond to the frequency of the magnetic field change. The detection coil transmits this current signal to the control module of the adjusting cylinder, which automatically controls the adjusting cylinder to drive the piston to move, adjusting the cavity depth of the blind hole in real time. When the current transmitted from the detection coil increases, it indicates that the vibration amplitude of the load cabinet is increasing. At this time, the adjusting cylinder controls the piston to move towards the top of the blind hole, reducing the cavity depth of the blind hole, thus increasing the vibration frequency of the mechanical resonance structure to approach the current larger amplitude vibration frequency, ensuring that the mechanical resonance structure can efficiently dissipate vibration energy. When the current transmitted from the detection coil decreases, it indicates that the vibration amplitude is decreasing. The adjusting cylinder then controls the piston to move away from the top of the blind hole, increasing the cavity depth and reducing the vibration frequency of the mechanical resonance structure to adapt to the smaller amplitude vibration frequency, achieving precise dynamic adjustment of vibration energy dissipation, and always maintaining a low vibration and low noise state for the heat dissipation component.

[0015] Furthermore, the load cell also includes a cabinet, on which several rows of cooling fans are arranged linearly.

[0016] Several rows of linearly arranged cooling fans are evenly distributed along the vertical direction of the cabinet. When the load cell is started, all cooling fans operate synchronously, and the generated airflow enters from one side of the cabinet, forming a directional cooling channel. Because the cooling fans are linearly arranged, the airflow from adjacent fans overlaps horizontally, creating a more uniform airflow field. This avoids uneven heat dissipation caused by excessively strong or weak local airflow. When the load modules generate concentrated heat, the linearly arranged cooling fans ensure that each heat-generating area receives stable airflow coverage, effectively removing the concentrated heat and maintaining the uniformity and stability of the internal temperature of the load cell.

[0017] Furthermore, the cabinet contains several test chambers, which are connected to the test objects and the heat dissipation bases. There are several test objects arranged linearly on the test chambers, and several heat dissipation bases arranged linearly on the test chambers.

[0018] Several detectors are linearly arranged on the test chamber, allowing each detector to correspond to the vibration conditions of different areas within the chamber. When uneven heating of the internal load modules causes local vibration differences, the linearly arranged detectors can capture vibration changes at different locations, avoiding the limitations of a single detector's detection area and preventing adjustment deviations. Simultaneously, several heat dissipation bases are linearly arranged on the test chamber, each corresponding to a set of heat dissipation fins and a mechanical resonance structure. This linear arrangement ensures that the heat dissipation bases uniformly cover the heat-generating surface of the test chamber, ensuring that heat is quickly conducted to the air-cooling channel through the heat dissipation fins. When the load power in a certain area of ​​the test chamber suddenly increases, the corresponding heat dissipation base can adjust its vibration frequency via an adjustment device to specifically dissipate the vibration energy generated by high-power heat dissipation in that area. This ensures both local heat dissipation efficiency and avoids adjustment conflicts with the overall resonance structure, thereby guaranteeing the elimination of noise and vibration in local areas of the test chamber 3.

[0019] Furthermore, the cooling fan and the adjacent test chamber are at the same height.

[0020] The cooling fan and the adjacent test chamber are at the same height. By setting the cooling fan and the test chamber at the same height, the airflow generated by the cooling fan carries away the heat generated by the load module inside the test chamber when it flows through the heat dissipation fins, thereby achieving heat dissipation. The airflow does not need to go through complex turning or diffusion and directly contacts the surface of the heat dissipation component, minimizing the energy loss of the airflow during transmission.

[0021] Compared with the prior art, the beneficial effects of the present invention are: 1. The mechanical resonance structure dissipates vibration energy. The center lines of the blind hole and the perforation are collinear to form a resonance structure, which can dissipate vibration energy through the reflection of resonance waves, reduce the vibration amplitude of the heat dissipation component, reduce the noise of air cooling, and at the same time reduce the thermal resistance caused by noise and improve heat dissipation efficiency.

[0022] 2. Dynamically adapts to vibration frequency. The detection component can capture the vibration frequency and amplitude in real time. The adjustment device adjusts the depth of the blind hole cavity to match the vibration frequency of the resonant structure with the current vibration frequency, adapting to the vibration changes during testing with different power supplies and maintaining a low vibration and low noise state.

[0023] 3. Uniform heat dissipation: The linearly arranged cooling fans form a uniform airflow field, avoiding uneven heat dissipation; the cooling fans are at the same height as the test chamber, and the airflow directly contacts the heat dissipation components, reducing energy loss during transmission and achieving precise heat dissipation.

[0024] 4. Multiple detectors and heat dissipation bases are linearly arranged to capture vibration changes in different areas and cover the heat-generating surface. When the load power in a certain area suddenly increases, the corresponding heat dissipation base can be intelligently adjusted to avoid adjustment conflicts and ensure the overall vibration reduction, noise reduction and heat dissipation effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the test box structure of the present invention; Figure 3 This is a schematic diagram of the heat dissipation component structure of the present invention; Figure 4 This is a schematic diagram of the detection component structure of the present invention; Figure 5 This is a schematic diagram of the heat dissipation base structure of the present invention; Figure 6 for Figure 5 A magnified view of part A; Figure 7 This is a schematic diagram of the detection body structure of the present invention; Figure 8 This is a schematic diagram of the cooling fan structure of the present invention.

[0026] In the diagram: 1. Cabinet; 2. Cooling fan; 3. Test box; 4. Detection assembly; 41. Detection body; 411. First mounting cavity; 412. Second mounting cavity; 42. Detection magnet; 43. Spring; 44. Detection coil; 5. Heat dissipation assembly; 51. Heat dissipation base; 511. Blind hole; 512. Mounting hole; 52. Heat dissipation fins; 521. Perforation; 53. Adjustment device; 531. Adjustment cylinder; 532. Piston. Detailed Implementation

[0027] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example: Figures 1-8 As shown, the present invention provides a technical solution: a load cabinet for testing the characteristics of laboratory power supplies, including a heat dissipation component 5, and a detection component 4 is provided on the heat dissipation component 5. The heat dissipation assembly 5 includes a heat dissipation base 51, on which a plurality of linearly arranged heat dissipation fins 52 are provided, and an adjustment device 53 is also provided on the heat dissipation base 51. The heat dissipation base 51 is provided with a number of linearly arranged blind holes 511, and the heat dissipation fins 52 are located on the surface of the blind holes 511. The heat dissipation fins 52 are provided with through holes 521 that are connected to the blind holes 511. The center line of the through holes 521 and the center line of the blind holes 511 are the same straight line. The blind holes 511 and the corresponding through holes 521 together constitute a mechanical resonance structure for dissipating vibration energy. Each blind hole 511 corresponds to a perforation 521; the diameter of the perforation is smaller than the diameter of the blind hole.

[0029] When the load cell starts working, it generates a large amount of heat, and then begins air cooling. The airflow generated by the air cooling operation flows through the heat sink fins 52, thereby carrying away a large amount of heat from the heat sink fins 52. At the same time, the friction between the airflow and the heat sink base 51 and the heat sink fins 52 will induce vibration. This vibration is transmitted through the heat sink base 51 to the mechanical resonance structure formed by the blind hole 511 and the through hole 521. Since the center lines of the blind hole 511 and the through hole 521 are collinear, the vibration energy will form a resonance wave of a specific frequency in the closed cavity of the blind hole 511 and the through channel of the through hole 521. This resonance wave is determined by the size of the through hole and the blind hole. The volume determines that the resonant wave is reflected at the boundary between the cavity and the channel. When the air moves back and forth at high speed in the perforated channel, it generates strong viscous friction with the hole wall, which directly converts the vibration into heat energy for consumption, so that the vibration energy is gradually dissipated. This part of the heat energy is much smaller than the energy of heat dissipation and can be almost ignored, so it will not affect the heat dissipation effect itself. At the same time, the single perforation 521 can ensure the stability of the resonant wave conduction path, improve the vibration energy dissipation efficiency, effectively reduce the overall vibration amplitude of the heat dissipation component 5, thereby reducing the noise generated by air cooling, and also reducing the thermal resistance caused by noise, thus improving the heat dissipation efficiency.

[0030] like Figures 4-6 As shown, the heat dissipation base 51 is also provided with a mounting hole 512, and an adjustment device 53 is provided in the mounting hole 512. The mounting hole 512 is connected to the blind hole 511. The adjusting device 53 is used to adjust the depth of the cavity inside the blind hole 511.

[0031] When the operating power of the load cabinet changes, the speed of the cooling fan 2 will be adjusted accordingly, causing the vibration frequency caused by airflow to change. At this time, the cavity depth in the blind hole 511 is adjusted by the adjustment device 53, so that the resonance frequency of the blind hole 511 is close to the vibration frequency of the load cabinet, thereby making the vibration frequency of the blind hole 511 and the load cabinet match, ensuring that the resonance structure can efficiently dissipate vibration energy and maintain the low vibration and low noise state of the heat dissipation component 5.

[0032] like Figure 5 and Figure 6As shown, the adjusting device 53 includes an adjusting cylinder 531, and a piston 532 is provided on the output end of the adjusting cylinder 531. The piston 532 is placed in the blind hole 511. Piston 532 and blind hole 511 are fitted together.

[0033] When it is necessary to adjust the resonant frequency of the blind hole 511, the output end of the adjusting cylinder 531 pushes the piston 532 to move axially along the blind hole 511. Since the piston 532 is in close contact with the inner wall of the blind hole 511, the movement of the piston 532 directly changes the effective depth of the closed cavity inside the blind hole 511. When the load cabinet tests a high-power power supply, which leads to an increase in heat dissipation power and thus an increase in vibration, the adjusting cylinder 531 drives the piston 532 to move towards the top of the blind hole 511, reducing the cavity depth and increasing the vibration frequency of the resonant structure to match the new vibration frequency. Conversely, when testing a low-power power supply, the piston 532 moves away from the top, increasing the cavity depth to reduce the vibration frequency, ensuring that the resonant structure can always dissipate the current vibration energy in a targeted manner.

[0034] like Figure 3 , Figure 4 and Figure 7 As shown, the detection component 4 includes a detection body 41; The detection body 41 is provided with a first mounting cavity 411; A detection magnet 42 is provided inside the first mounting cavity 411, and the detection magnet 42 is slidably connected to the first mounting cavity 411. The detection magnet 42 has springs 43 at both ends.

[0035] When the heat dissipation component 5 vibrates, the vibration is transmitted to the detection body 41. The vibration of the detection body 41 causes the detection magnet 42 in the first mounting cavity 411 to vibrate synchronously. Since the detection magnet 42 is connected to springs 43 at both ends, the springs 43 will stretch and deform with the vibration, forming an elastic constraint on the detection magnet 42, causing the detection magnet 42 to slide back and forth in the vibration direction in the first mounting cavity 411. During the sliding process, the displacement of the detection magnet 42 is proportional to the vibration amplitude, and its sliding frequency matches the vibration frequency, thereby reflecting the vibration frequency of the test box 3.

[0036] like Figure 7 As shown, the detection body 41 is also provided with a second mounting cavity 412, which is located outside the first mounting cavity 411, and a detection coil 44 is provided inside the second mounting cavity 412. The detection coil 44 and the regulating cylinder 531 are electrically connected; The induced current generated by the detection coil 44 is proportional to the vibration of the detection magnet 42.

[0037] When the detection magnet 42 reciprocates within the first mounting cavity 411, the magnetic field around it changes with the sliding motion. This changing magnetic field passes through the detection coil 44 within the second mounting cavity 412, inducing an electromotive force and current in the detection coil 44 that correspond to the frequency of the magnetic field change. The detection coil 44 and the regulating cylinder 531 transmit the current signal via wires. The detection coil 44 transmits this current signal to the control module of the regulating cylinder 531, which automatically controls the regulating cylinder 531 to drive the piston 532 to move, adjusting the cavity depth of the blind hole 511 in real time. When the current transmitted from the detection coil 44 increases, it indicates that the vibration frequency of the load cabinet is increasing. When the vibration frequency increases, the regulating cylinder 531 controls the piston 532 to move towards the top of the blind hole 511, reducing the cavity depth of the blind hole 511 and increasing the vibration frequency of the resonant structure to be close to the current larger amplitude vibration frequency, ensuring that the resonant structure can efficiently dissipate vibration energy. When the current transmitted by the detection coil 44 decreases, it indicates that the vibration frequency decreases. The regulating cylinder 531 then controls the piston 532 to move away from the top of the blind hole 511, increasing the cavity depth and reducing the vibration frequency of the resonant structure to adapt to a smaller amplitude vibration frequency, thereby achieving precise dynamic adjustment of vibration energy dissipation and always maintaining the low vibration and low noise state of the heat dissipation component 5.

[0038] like Figure 1 and Figure 8 As shown, the load cabinet also includes a cabinet 1, and the cabinet 1 is equipped with several rows of linearly arranged cooling fans 2.

[0039] Several rows of linearly arranged cooling fans 2 are evenly distributed along the vertical direction of the cabinet 1. When the load cabinet is started, all cooling fans 2 operate synchronously, and the airflow generated enters from one side of the cabinet 1 to form a directional air cooling channel. Since the cooling fans 2 are linearly arranged, the airflow of adjacent fans overlaps with each other in the horizontal direction, forming a more uniform airflow field. This avoids the problem of uneven heat dissipation caused by excessively strong or weak local airflow. When the load modules generate concentrated heat, the linearly arranged cooling fans 2 can ensure that each heat-generating area can obtain stable airflow coverage, effectively remove the concentrated heat, maintain the uniformity of the internal temperature of the load cabinet, and maintain the stability of the internal temperature of the load cabinet.

[0040] like Figures 1-3 As shown, the cabinet 1 is equipped with several test boxes 3, the test boxes 3 are connected to the detection bodies 41, the test boxes 3 are connected to the heat dissipation bases 51, there are several detection bodies 41, the several detection bodies 41 are linearly arranged on the test boxes 3, there are several heat dissipation bases 51, the several heat dissipation bases 51 are linearly arranged on the test boxes 3.

[0041] Several detectors 41 are linearly arranged on the test chamber 3, so that each detector 41 can correspond to the vibration of different areas within the test chamber 3. When the test chamber 3 experiences local vibration differences due to uneven heating of the internal load modules, the linearly arranged detectors 41 can capture the vibration changes at different locations, avoiding the limitation of a single detector's detection area and thus preventing adjustment deviations. At the same time, several heat dissipation bases 51 are linearly arranged on the test chamber 3, each corresponding to a set of heat dissipation fins 52 and a resonant structure. The linear arrangement allows the heat dissipation bases 51 to evenly cover the heating surface of the test chamber 3, ensuring that heat is quickly conducted to the air-cooling channel through the heat dissipation fins 52. When the load power in a certain area of ​​the test chamber 3 suddenly increases, the heat dissipation base 51 corresponding to that area can adjust the resonant frequency through the adjustment device 53 to dissipate the vibration energy generated by high-power heat dissipation in that area in a targeted manner. This ensures both local heat dissipation efficiency and avoids adjustment conflicts of the overall resonant structure, thereby ensuring the elimination of noise and vibration in local areas of the test chamber 3.

[0042] like Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, cooling fan 2 and the adjacent test box 3 are at the same height.

[0043] The cooling fan 2 and the adjacent test chamber 3 are at the same height. By setting the cooling fan 2 and the test chamber 3 at the same height, the airflow generated by the cooling fan 2 carries away the heat generated by the load module in the test chamber 3 when it flows through the heat dissipation fins 52, thereby achieving heat dissipation. The airflow does not need to go through complex turning or diffusion and directly contacts the surface of the heat dissipation component 5, minimizing the energy loss of the airflow during transmission.

[0044] The working principle of this invention is as follows: When the load cabinet starts running, the linearly arranged cooling fans 2 on the cabinet 1 are first activated. The airflow generated by the cooling fans 2 carries away the heat generated by the load module in the test chamber 3 as it flows through the heat dissipation fins 52. During this process, the friction between the airflow and the heat dissipation base 51 and the heat dissipation fins 52 causes vibration. The vibration is transmitted to the detection body 41 through the heat dissipation base 51. The vibration of the detection body 41 drives the detection magnet 42 in the first mounting cavity 411 to vibrate synchronously. Under the elastic constraint of the springs 43 at both ends, the detection magnet 42 slides back and forth along the vibration direction. The changing magnetic field around it passes through the detection coil 44 in the second mounting cavity 412, causing the detection coil 44 to induce a current. The detection coil 44 transmits this current signal to the control module of the adjusting cylinder 531. The control module determines the vibration frequency and amplitude based on the current signal and drives the piston 532 of the adjusting cylinder 531 to move axially along the blind hole 511, adjusting the effective depth of the closed cavity in the blind hole 511, so that the blind hole 511... The vibration frequency of the resonant structure formed together with the perforation 521 matches the current vibration frequency. The vibration energy is gradually dissipated through reflection within the resonant structure, effectively reducing the vibration and noise of the heat dissipation component 5. At the same time, it reduces the thermal resistance caused by noise and improves the heat dissipation efficiency. When the operating power of the load cabinet changes, causing the speed of the cooling fan 2 to adjust and the vibration frequency to change, the detection component 4 captures the vibration change in real time and feeds it back to the adjustment device 53. The adjustment device 53 dynamically adjusts the vibration frequency of the resonant structure to ensure that a low vibration and low noise heat dissipation state is always maintained, ensuring the stable operation of the load cabinet for testing the characteristics of different power supplies.

[0045] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A load cabinet for laboratory power supply characteristic testing, characterized in that: The load cabinet includes a heat dissipation component (5), and the heat dissipation component (5) is provided with a detection component (4). The heat dissipation assembly (5) includes a heat dissipation base (51), on which a plurality of linearly arranged heat dissipation fins (52) are provided, and an adjustment device (53) is also provided on the heat dissipation base (51). The heat dissipation base (51) is provided with a plurality of linearly arranged blind holes (511), the heat dissipation fins (52) are located on the surface of the blind holes (511), the heat dissipation fins (52) are provided with through holes (521) corresponding to and connected to the blind holes (511), the center line of the through holes (521) and the center line of the blind holes (511) are the same straight line, the blind holes (511) and the corresponding through holes (521) together constitute a resonant structure for consuming vibration energy; Each blind hole (511) corresponds to a perforation (521), the diameter of which is smaller than the diameter of the blind hole (511).

2. The load cabinet for laboratory power supply characteristic testing according to claim 1, characterized in that: The heat dissipation base (51) is also provided with a mounting hole (512), and an adjustment device (53) is provided in the mounting hole (512). The mounting hole (512) and the blind hole (511) are connected. The adjustment device (53) is used to adjust the depth of the cavity inside the blind hole (511).

3. The load cabinet for laboratory power supply characteristic testing according to claim 1, characterized in that: The regulating device (53) includes a regulating cylinder (531), and a piston (532) is provided on the output end of the regulating cylinder (531). The piston (532) is placed in a blind hole (511). The piston (532) and the blind hole (511) are fitted together.

4. The load cabinet for laboratory power supply characteristic testing according to claim 1, characterized in that: The detection component (4) includes a detection body (41); The detection body (41) is provided with a first mounting cavity (411); The first mounting cavity (411) is provided with a detection magnet (42), and the detection magnet (42) and the first mounting cavity (411) are slidably connected; The detection magnet (42) is provided with springs (43) at both ends.

5. A load cabinet for laboratory power supply characteristic testing according to claim 4, characterized in that: The detection body (41) is also provided with a second mounting cavity (412), which is located outside the first mounting cavity (411), and a detection coil (44) is provided inside the second mounting cavity (412). The detection coil (44) and the regulating cylinder (531) are electrically connected; The induced current generated by the detection coil (44) is proportional to the vibration of the detection magnet (42).

6. The load cabinet for laboratory power supply characteristic testing according to claim 1, characterized in that: The load cabinet also includes a cabinet (1), and the cabinet (1) is provided with several rows of linearly arranged cooling fans (2).

7. A load cabinet for laboratory power supply characteristic testing according to claim 6, characterized in that: The cabinet (1) is equipped with several test boxes (3), the test boxes (3) are connected to the detection bodies (41), the test boxes (3) are connected to the heat dissipation bases (51), there are several detection bodies (41), the several detection bodies (41) are linearly arranged on the test boxes (3), there are several heat dissipation bases (51), the several heat dissipation bases (51) are linearly arranged on the test boxes (3).

8. A load cabinet for laboratory power supply characteristic testing according to claim 7, characterized in that: The cooling fan (2) and the adjacent test box (3) are at the same height.

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