Low-voltage switch cabinet with adjustable structure
By introducing adjustable ventilation components into the low-voltage switchgear, the problem of non-adjustable vents is solved, flexible heat dissipation and fire safety protection are achieved, and the stability and safety of equipment operation are improved.
Patent Information
- Application Number
- CN202422592220.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-26
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-26
AI Technical Summary
The ventilation opening area of traditional low-voltage switchgear is fixed and cannot be adjusted, resulting in insufficient heat dissipation or excessive ventilation, affecting equipment operation and safety. In the event of a fire, the ventilation opening becomes a channel for the spread of fire, increasing safety risks.
An adjustable ventilation assembly is designed, including a frame and a grille. The ventilation volume is adjusted by driving a motor to control the rotation of the grille. In the event of a fire, the vents are closed to block the entry of outside air and reduce the risk of combustion.
It realizes flexible adjustment of ventilation volume according to demand, maintains normal equipment temperature, prevents the spread of fire, and improves the heat dissipation efficiency and fire safety of low-voltage switchgear.
Smart Images
Figure CN223363621U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric power distribution equipment, in particular to a low-voltage switch cabinet with adjustable structure. Background Art
[0002] Low-voltage switchgear plays a vital role in the power system. Its main function is to open and close, control and protect electrical equipment during the power generation, transmission, distribution and energy conversion process of the power system.
[0003] The interior of the low-voltage switchgear is mainly composed of terminal blocks, various knife switches, protective devices (such as air switches, fuses, etc.), measuring devices (such as voltmeters, ammeters, etc.) and metering equipment (such as active and reactive power meters, etc.). These devices are completed by the manufacturer according to actual needs. All electrical and mechanical connections are completed and assembled together with structural components to form a functional distribution equipment. Through reasonable configuration of power supply, the low-voltage switchgear can ensure the stable operation of the power system. When a line fault occurs, it is helpful to control the fault range, facilitate the rapid identification and elimination of the fault point, and facilitate the arrangement of line maintenance in sections without the need for large-scale power outages, thereby improving the reliability and safety of the power system.
[0004] Traditional low-voltage switchgear has certain limitations in ventilation, heat dissipation and safety protection. The ventilation area of the vents on its external shell is fixed and cannot be adjusted, and the ventilation volume cannot be adjusted according to actual needs, resulting in insufficient ventilation when the equipment has a large heat dissipation demand. When the equipment is running for a long time or the ambient temperature is high, the heat dissipation demand may not be met, causing the equipment inside the switchgear to overheat, affecting its normal operation and lifespan; on the contrary, when the heat dissipation demand is small, since the vents cannot be adjusted, unnecessary ventilation will occur, making it easier for dust and other impurities to enter the switchgear through the vents, causing pollution and damage to the equipment, further increasing maintenance costs and safety risks, and once a fire occurs inside the low-voltage switchgear, the vents may become a channel for the fire to spread outward, accelerating the spread of the fire.
[0005] In view of this, we propose a low-voltage switchgear with adjustable structure to solve the existing problems. Utility Model Content
[0006] The purpose of the present utility model is to provide a low-voltage switch cabinet with adjustable structure to solve the problems raised in the above background technology.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-voltage switch cabinet with adjustable structure, comprising a shell and an adjustable ventilation assembly, the side wall of the shell is provided with a vent connected to the interior of the shell, the vent is installed with an adjustable ventilation assembly, the adjustable ventilation assembly comprises a frame, a plurality of grating plates are equidistantly arranged inside the frame, a rotating shaft is provided on the axis of the length direction of the plurality of grating plates, both ends of the rotating shaft respectively pass through the two end side walls of the frame and the rotating shaft can rotate around the frame, one end of the rotating shaft passes through the frame and is provided with an input end and is connected to a drive motor through the input end, a synchronous connecting rod is also provided on the frame, the synchronous connecting rod is connected to the side of the plurality of rotating shafts away from the input end, for realizing synchronous rotation of the grating plates to adjust the ventilation volume.
[0008] Preferably, the vent includes an air inlet and an air outlet, and the adjustable ventilation components have two groups, and the adjustable ventilation components are detachably mounted on the outside of the air inlet and the air outlet through corresponding frames.
[0009] Preferably, a first mounting hole is provided at the front end of the frame, and the frame is detachably connected to the side wall of the shell through bolts through the first mounting hole. A second mounting hole is provided at the rear end of the frame, and a cooling fan is detachably installed on the frame through the second mounting hole.
[0010] Preferably, the driving motor is connected to the input end of the adjacent rotating shaft through a reducer, and is used to drive and control the rotation speed and rotation angle of the grid plate.
[0011] Preferably, a limiting column is further provided on the inner wall of the frame for limiting the adjustment range of the grid plate.
[0012] Preferably, the synchronous connecting rod includes a first connecting rod and a second connecting rod, the first connecting rod has several connecting rods and is respectively fixedly connected to one end of several rotating shafts away from the input shaft, and the second connecting rod is connected to several first connecting rods to drive the several rotating shafts to rotate synchronously.
[0013] Preferably, the air inlet and the air outlet are arranged at the upper and lower ends of the side wall of the same side of the shell, and the air inlet is located at the upper end of the air outlet.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] The utility model provides an adjustable ventilation component on the shell, which can flexibly adjust the ventilation volume according to the heat dissipation needs, keep the internal temperature of the low-voltage switch cabinet shell within a normal range, ensure the normal operation of the equipment in the shell, and avoid local heat accumulation caused by poor ventilation inside the shell.
[0016] The utility model provides an adjustable ventilation assembly on the shell. When a fire occurs in the shell, the grid plates are driven by a driving motor to cooperate with each other to close the ventilation openings, which can quickly block the entry of outside air, reduce the risk of combustion due to air flow, prevent the fire from spreading further, provide valuable time for fire extinguishing and personnel evacuation, and improve the safety performance of the low-voltage switchgear in the event of a fire. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the housing of the utility model;
[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the adjustable ventilation assembly of the present invention;
[0020] Figure 4 It is a side view schematic diagram of the connection structure of the adjustable ventilation component and the heat dissipation fan of the present invention.
[0021] In the figure: 1. Shell; 2. Air inlet; 3. Air outlet; 4. Adjustable ventilation assembly; 5. Frame; 51. First mounting hole; 52. Limit column; 53. Second mounting hole; 6. Grid plate; 7. Rotating shaft; 71. Input end; 8. Synchronous connecting rod; 81. First connecting rod; 82. Second connecting rod; 9. Drive motor. DETAILED DESCRIPTION
[0022] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments. Example
[0023] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the utility model proposes a low-voltage switchgear with adjustable structure, including a shell 1 and an adjustable ventilation component 4. The side wall of the shell 1 is provided with a vent connected to the interior of the shell 1, and the adjustable ventilation component 4 is installed on the vent. The adjustable ventilation component 4 includes a frame 5, and a plurality of grid plates 6 are equidistantly provided inside the frame 5. A rotating shaft 7 is provided on the axis of the length direction of the plurality of grid plates 6. The two ends of the rotating shaft 7 respectively pass through the two end side walls of the frame 5 and the rotating shaft 7 can rotate around the frame 5. One end of the rotating shaft 7 passes through the frame 5 and is provided with an input end 71 and is connected to a drive motor 9 through the input end 71. A synchronous connecting rod 8 is also provided on the frame 5. The synchronous connecting rod 8 is connected to the side of the plurality of rotating shafts 7 away from the input end 71, so as to realize the synchronous rotation of the grid plates 6 to adjust the ventilation volume.
[0024] Furthermore, the vent includes an air inlet 2 and an air outlet 3, and there are two groups of adjustable ventilation components 4. The adjustable ventilation components 4 are detachably installed on the outside of the air inlet 2 and the air outlet 3 through corresponding frames 5, which are convenient for disassembly, assembly and maintenance.
[0025] Furthermore, a first mounting hole 51 is provided at the front end of the frame 5, and the frame 5 is detachably connected to the side wall of the shell 1 through the first mounting hole 51 by bolts. A second mounting hole 53 is provided at the rear end of the frame 5, and a cooling fan is detachably installed on the frame 5 through the second mounting hole 53 to assist ventilation and heat dissipation.
[0026] Furthermore, the driving motor 9 is connected to the input end 71 of the adjacent rotating shaft 7 through a speed reducer, and is used to drive and control the rotation speed and rotation angle of the grid plate 6 .
[0027] Furthermore, a limiting column 52 is provided on the inner wall of the frame 5 for limiting the adjustment range of the grid plate 6 .
[0028] Furthermore, the synchronization link 8 includes a first link 81 and a second link 82. The first link 81 has several ends that are fixedly connected to one end of the rotation shaft 7 away from the input shaft. The second link 82 is connected to the first links 81 to drive the rotation shafts 7 to rotate synchronously.
[0029] Furthermore, the air inlet 2 and the air outlet 3 are arranged at the upper and lower ends of the side wall of the same side of the shell 1, and the air inlet 2 is located at the upper end of the air outlet 3.
[0030] The working principle of the structurally adjustable low-voltage switchgear based on the first embodiment is as follows: the shell 1 serves as the main body of the low-voltage switchgear, and the side walls of the shell 1 are provided with vents, specifically air inlet 2 and air outlet 3, which are respectively located at the upper and lower ends of the side wall of the same side of the shell 1, and the air inlet 2 is located at the upper end of the air outlet 3 to form an effective air convection path to dissipate heat for the internal components. Two sets of adjustable ventilation components 4 are respectively installed on the outside of the air inlet 2 and the air outlet 3 through corresponding frames 5 for easy maintenance. A number of grid plates 6 are equidistantly arranged inside the frame 5, and the grid plates 6 are connected to the frame 5 through a rotating shaft 7. The two ends of the rotating shaft 7 pass through the frame 5. The side walls of the frame 5 at both ends can rotate around the frame 5. The grid plate 6 can rotate around the rotating shaft 7 under the drive of the driving motor 9, thereby changing the opening degree of the vent. The driving motor 9 is connected to the input end 71 of the adjacent nearest rotating shaft 7 through a reducer. The speed of the driving motor 9 is reduced by the reducer, and the torque is increased to more accurately control the rotating shaft 7 to drive the grid plate 6 to rotate and adjust the angle. The synchronous connecting rod 8 set at the other end of the frame 5 enables all the rotating shafts 7 to rotate synchronously, thereby ensuring that all the grid plates 6 can be opened or closed at the same time, realizing uniform adjustment of the ventilation volume. A limit column 52 is provided on the inner wall of the frame 5 to limit the grid The adjustment range of the grid plate 6 is such that even if the driving motor 9 fails or is misoperated, the grid plate 6 will not over-rotate to damage the equipment or cause safety hazards, and a plurality of grid plates 6 can cooperate with each other under the drive of the driving motor 9 to contact and close the vents, which also helps to enhance the safety of the low-voltage switchgear. In the event of an emergency such as a fire caused by a short circuit caused by aging of the components inside the shell 1 due to long-term work, the driving motor 9 can be controlled to drive the rotating shaft 7 to quickly drive the grid plate 6 to rotate, so that all the grid plates 6 cooperate with each other and contact closely, thereby fully closing the vents, which can quickly block the contact between the outside air and the fire source inside the shell 1, and effectively slow down the fire. The speed of fire spread can buy precious time for fire extinguishing and personnel evacuation. At the same time, closing the ventilation holes can also reduce the risk of combustion caused by air flow, further improving the safety of the low-voltage switchgear in the event of fire; the rear end of the frame 5, that is, on the inner side of the shell 1, is detachably mounted with a cooling fan through the second mounting hole 53. When the heat dissipation effect needs to be increased, the cooling fan can be started. The cooling fan at one end of the air inlet 2 draws external cold air into the shell 1 and exchanges heat with the hot air inside the shell 1. The cooling fan on the side of the air outlet 3 rotates in the opposite direction to discharge the heat-exchanged air, thereby keeping the temperature inside the shell 1 at a normal value.
[0031] The above specific embodiments are merely preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art may make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A structurally adjustable low-voltage switchgear comprising a housing (1) and an adjustable ventilation assembly (4), characterized in that: The side wall of the shell (1) is provided with a ventilating port communicating with the interior of the shell (1), and an adjustable ventilation assembly (4) is installed on the ventilating port. The adjustable ventilation assembly (4) comprises a frame (5), and a plurality of grid plates (6) are equidistantly provided inside the frame (5). A rotating shaft (7) is provided on the axis in the length direction of the plurality of grid plates (6). The two ends of the rotating shaft (7) respectively pass through the two end side walls of the frame (5), and the rotating shaft (7) can rotate around the frame (5). One end of the rotating shaft (7) passes through the frame (5) and is provided with an input end (71), and is connected to a driving motor (9) through the input end (71). The frame (5) is also provided with a synchronous connecting rod (8), and the synchronous connecting rod (8) is connected to the side of the plurality of rotating shafts (7) away from the input end (71), so as to realize the synchronous rotation of the grid plates (6) to adjust the ventilation volume.
2. The structurally adjustable low-voltage switchgear according to claim 1, characterized in that: The vent includes an air inlet (2) and an air outlet (3), and the adjustable ventilation components (4) have two groups. The adjustable ventilation components (4) are detachably mounted on the outside of the air inlet (2) and the air outlet (3) through corresponding frames (5).
3. The structurally adjustable low-voltage switchgear according to claim 2, characterized in that: A first mounting hole (51) is provided at the front end of the frame (5), and the frame (5) is detachably connected to the side wall of the housing (1) through the first mounting hole (51) by bolts. A second mounting hole (53) is provided at the rear end of the frame (5), and a cooling fan is detachably mounted on the frame (5) through the second mounting hole (53).
4. The structurally adjustable low-voltage switchgear according to claim 3, characterized in that: The driving motor (9) is connected to the input end (71) of the adjacent rotating shaft (7) via a speed reducer, and is used to drive and control the rotation speed and rotation angle of the grid plate (6).
5. The structurally adjustable low-voltage switchgear according to claim 4, characterized in that: A limiting column (52) is also provided on the inner wall of the frame (5) for limiting the adjustment range of the grid plate (6).
6. The structurally adjustable low-voltage switchgear according to claim 5, characterized in that: The synchronous connecting rod (8) comprises a first connecting rod (81) and a second connecting rod (82), wherein the first connecting rod (81) has a plurality of ends respectively fixedly connected to one end of the plurality of rotating shafts (7) away from the input shaft, and the second connecting rod (82) is connected to the plurality of first connecting rods (81) and is used to drive the plurality of rotating shafts (7) to rotate synchronously.
7. The structurally adjustable low-voltage switchgear according to claim 2, characterized in that: The air inlet (2) and the air outlet (3) are arranged at the upper and lower ends of the same side wall of the shell (1), and the air inlet (2) is located at the upper end of the air outlet (3).