A temperature control device and method for a low-voltage switchgear

Abstract

The present invention provides a temperature control device and method for a low-voltage switch cabinet, including a cabinet body. An installation groove is formed inside the cabinet body. A plurality of strip-shaped openings for ventilation are equally spaced and formed on both side walls of the cabinet body. Two baffles for closing the plurality of strip-shaped openings are symmetrically arranged inside the installation groove. A driving mechanism for driving the two baffles to move is arranged inside the cabinet body. A ventilation opening is formed at the bottom of the cabinet body. A ventilation mechanism is arranged inside the ventilation opening. A first sliding cavity is further formed inside the cabinet body. An elastic mechanism that cooperates with the driving mechanism and is used to control the start of the ventilation mechanism is arranged inside the first sliding cavity. A filter plate is further installed inside the ventilation opening. The present invention can ensure that the upper and lower ends of the two baffles are located on the same vertical section to ensure stability during the movement process, and can also blow external air into the inside of the installation groove to complete ventilation inside the installation groove.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage switch cabinets, and particularly to a temperature control device and method for a low-voltage switch cabinet. Background Art

[0002] The external wires of the switch cabinet first enter the main control switch inside the cabinet, and then enter the sub-control switch, and each branch is set according to its needs. Such as instruments, automatic controls, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage switch cabinets, with high-voltage busbars, such as power plants, etc. Some also have under-frequency load shedding to protect the main equipment. The main function of the switch cabinet is to open, control, and protect electrical equipment during the processes of power generation, transmission, distribution, and power conversion in the power system. The components inside the switch cabinet mainly include circuit breakers, disconnectors, load switches, operating mechanisms, transformers, and various protection devices, etc. There are many classification methods for switch cabinets. For example, they can be divided into withdrawable switch cabinets and fixed switch cabinets according to the installation method of the circuit breaker; or according to the different cabinet structures, they can be divided into open switch cabinets, metal-enclosed switch cabinets, and metal-enclosed armored switch cabinets; according to different voltage levels, they can be divided into high-voltage switch cabinets, medium-voltage switch cabinets, and low-voltage switch cabinets, etc. It is mainly applicable to various different occasions such as power plants, substations, petrochemical industries, metallurgical rolling mills, light industry and textile industries, factories and mines, residential communities, and high-rise buildings. Now, with the continuous progress and development of society, more and more industries such as power plants and substations are emerging, and the demand for high- and low-voltage switch cabinets is also increasing.

[0003] When the traditional switch cabinet is used for a long time, the temperature inside the switch cabinet is too high, which will reduce the service life of the switch cabinet. When the switch cabinet is not used for a long time, it is easy to get damp, thus affecting the reuse of the switch cabinet. Summary of the Invention

[0004] In order to overcome the defects existing in the prior art, a temperature control device and method for a low-voltage switch cabinet are provided to solve the problems that when the switch cabinet is used for a long time, the temperature inside the switch cabinet is too high, which will reduce the service life of the switch cabinet, and when the switch cabinet is not used for a long time, it is easy to get damp, thus affecting the reuse of the switch cabinet.

[0005] A temperature control device and method for a low-voltage switch cabinet, including a cabinet body. A device slot is provided inside the cabinet body. A plurality of strip-shaped openings for ventilation are equally spaced and provided on both side walls of the cabinet body. Two baffles for closing the plurality of strip-shaped openings are symmetrically provided inside the device slot. A driving mechanism for driving the two baffles to move is provided inside the cabinet body. A ventilation opening is provided at the bottom of the cabinet body. A ventilation mechanism is provided inside the ventilation opening. A first sliding cavity is further provided inside the cabinet body. An elastic mechanism for controlling the ventilation mechanism to start and cooperating with the driving mechanism is provided inside the first sliding cavity. A filter plate is installed inside the ventilation opening. A second sliding cavity is provided at the bottom of the cabinet body. A clamping mechanism for fixing the filter plate is provided inside the second sliding cavity.

[0006] Preferably, the driving mechanism includes two double-headed threaded rods symmetrically and rotatably installed inside the cabinet body. Nuts are fixedly installed inside both of the two baffles. The nuts are in screw transmission connection with the double-headed threaded rods. A first motor is fixedly installed outside the cabinet body. One end of the upper double-headed threaded rod penetrates through the cabinet body and is fixedly connected to the output end of the first motor.

[0007] Preferably, a strip-shaped cavity is provided on the side wall of the cabinet body. Both of the two double-headed threaded rods extend into the strip-shaped cavity and are fixedly installed with transmission wheels. The two transmission wheels are in transmission connection through a transmission belt.

[0008] Preferably, the ventilation mechanism includes a fixed rod fixedly installed inside the ventilation opening. A second motor is fixedly installed inside the fixed rod. A rotating rod is fixedly installed at the output end of the second motor. A fan blade for driving the gas to flow is fixedly installed on the outer edge of the rotating rod.

[0009] Preferably, the elastic mechanism includes a sliding plate slidably installed inside the first sliding cavity. A first spring is fixedly installed on one side of the sliding plate. The sliding plate is elastically connected to the inner wall of the first sliding cavity through the first spring. A stop rod is fixedly installed on the other side of the sliding plate. One end of the stop rod penetrates through the first sliding cavity and extends into the device slot and contacts the baffle.

[0010] Preferably, two first contact heads are symmetrically and fixedly installed on one side of the sliding plate. Two second contact heads cooperating with the two first contact heads are symmetrically and fixedly installed on the inner wall of the first sliding cavity. Both of the two second contact heads are electrically connected to the second motor.

[0011] Preferably, the clamping mechanism includes a slider slidably installed inside the second sliding cavity. A second spring is fixedly installed on one side of the slider. The slider is elastically connected to the inner wall of the second sliding cavity through the second spring.

[0012] Preferably, a plug rod is fixedly installed on the other side of the slider. Sockets are provided at both ends of the filter plate, and one end of the plug rod penetrates through the side wall of the second sliding cavity and inserts into the interior of the socket.

[0013] Preferably, a sliding groove is provided at the bottom of the cabinet body, and a sliding opening matching the sliding groove is provided at the bottom of the second sliding cavity. The lower end of the slider extends into the interior of the sliding groove. An electric heating wire is also fixedly installed inside the filter plate, and the electric heating wire is electrically connected to two second contact terminals.

[0014] A usage method of a temperature control device for a low-voltage switch cabinet includes the following steps:

[0015] S1: When dissipating heat from the interior of the cabinet body, start the first motor located on one side of the cabinet body. Subsequently, the first motor drives the double-headed threaded rod to rotate, and then drives the two baffles to approach each other through the nuts, so as to no longer block the strip-shaped openings on both sides, facilitating ventilation and heat dissipation inside the device slot. After the upper double-headed threaded rod rotates, it drives the lower double-headed threaded rod to rotate simultaneously through the transmission wheels and transmission belts inside the strip-shaped cavity, so as to ensure that the upper and lower ends of the two baffles are on the same vertical section, ensuring the stability during the movement process;

[0016] S2: After the two baffles move, since the blocking rods inside the first sliding cavity are no longer blocked by the baffles, the sliding plate will be pushed to move under the elastic force of the first spring, so that the two first contact terminals are in contact with the two second contact terminals, thus conducting the circuit and starting the second motor inside the ventilation opening. Subsequently, the second motor drives the rotating rod and the fan blades to rotate, blowing the external air into the interior of the device slot to complete the ventilation of the interior of the device slot;

[0017] S3: A filter plate is fixed at the bottom of the cabinet body. During the ventilation process, the dust in the external gas is filtered by the filter plate. The slider inside the second sliding cavity will, under the elastic force of the second spring, push the plug rod into the interior of the socket to complete the fixation of the filter plate. During the ventilation process, the electric heating wire will also generate heat, so that the air blown into the interior of the device slot is hot air, facilitating dehumidification of the interior of the device slot.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. When dissipating heat from the interior of the cabinet body, it can drive the lower double-headed threaded rod to rotate simultaneously, so as to ensure that the upper and lower ends of the two baffles are on the same vertical section, ensuring the stability during the movement process;

[0020] 2. After the two baffles move, it can blow the external air into the interior of the device slot to complete the ventilation of the interior of the device slot;

[0021] 3. During the ventilation process, the fixing of the filter plate can be completed, and the heating wire will also generate heat, so that the gas blown into the device tank is hot air, which is convenient for dehumidifying the inside of the device tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structure diagram of the present invention.

[0023] Figure 2 It is an internal structure diagram of the present invention.

[0024] Figure 3 It is Figure 2 an enlarged view of the structure at A of

[0025] Figure 4 It is Figure 2 an enlarged view of the structure at B of

[0026] Figure 5 It is Figure 2 an enlarged view of the structure at C of

[0027] In the figure: 1, cabinet body; 2, device tank; 3, double-headed threaded rod; 4, nut; 5, baffle; 6, first motor; 7, strip cavity; 8, transmission wheel; 9, transmission belt; 10, first sliding cavity; 11, sliding plate; 12, first spring; 13, first contact; 14, second contact; 15, blocking rod; 16, ventilation opening; 17, fixing rod; 18, second motor; 19, rotating rod; 20, fan blade; 21, filter plate; 22, socket; 23, second sliding cavity; 24, slider; 25, inserting rod; 26, second spring; 27, chute; 28, strip opening. DETAILED DESCRIPTION OF THE INVENTION

[0028] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0029] Refer to Figures 1-5, a temperature control device and method for a low-voltage switch cabinet, including a cabinet body 1. An installation groove 2 is formed inside the cabinet body 1. A plurality of strip-shaped openings 28 for ventilation are equally spaced on both side walls of the cabinet body 1. Two baffles 5 for closing the plurality of strip-shaped openings 28 are symmetrically arranged inside the installation groove 2. A driving mechanism for driving the two baffles 5 to move is arranged inside the cabinet body 1. A ventilation opening 16 is formed at the bottom of the cabinet body 1. A ventilation mechanism is arranged inside the ventilation opening 16. A first sliding cavity 10 is also formed inside the cabinet body 1. An elastic mechanism for controlling the ventilation mechanism to start and cooperating with the driving mechanism is arranged inside the first sliding cavity 10. A filter plate 21 is installed inside the ventilation opening 16. A second sliding cavity 23 is formed at the bottom of the cabinet body 1. A clamping mechanism for fixing the filter plate 23 is arranged inside the second sliding cavity 23.

[0030] As a preferred embodiment, the driving mechanism includes two double-headed threaded rods 3 symmetrically and rotatably installed inside the cabinet body 1. Nuts 4 are fixedly installed inside both of the two baffles 5. The nuts 4 are in screw drive connection with the double-headed threaded rods 3. A first motor 6 is fixedly installed outside the cabinet body 1. One end of the upper double-headed threaded rod 3 penetrates through the cabinet body 1 and is fixedly connected to the output end of the first motor 6.

[0031] When dissipating heat inside the cabinet body 1, start the first motor 6 located on one side of the cabinet body 1. Subsequently, the first motor 6 will drive the double-headed threaded rod 3 to rotate, and then drive the two baffles 5 to approach each other through the nuts 4, so as to no longer close the strip-shaped openings 28 on both sides, facilitating ventilation and heat dissipation inside the installation groove 2.

[0032] As a preferred embodiment, a strip-shaped cavity 7 is formed on the side wall of the cabinet body 1. Both of the two double-headed threaded rods 3 extend into the strip-shaped cavity 7 and are fixedly installed with transmission wheels 8. The two transmission wheels 8 are in transmission connection through a transmission belt 9.

[0033] After the upper double-headed threaded rod 3 rotates, it will drive the lower double-headed threaded rod 3 to rotate simultaneously through the transmission wheels 8 and the transmission belt 9 inside the strip-shaped cavity 7, so as to ensure that the upper and lower ends of the two baffles 5 are on the same vertical section, ensuring the stability during the movement.

[0034] As a preferred embodiment, the ventilation mechanism includes a fixing rod 17 fixedly installed inside the ventilation opening 16. A second motor 18 is fixedly installed inside the fixing rod 17. The output end of the second motor 18 is fixedly installed with a rotating rod 19. The outer edge of the rotating rod 19 is fixedly installed with a fan blade 20 for driving the gas to flow. The elastic mechanism includes a sliding plate 11 slidably installed inside the first sliding cavity 10. One side of the sliding plate 11 is fixedly installed with a first spring 12. One side of the sliding plate 11 is elastically connected to the inner wall of the first sliding cavity 10 through the first spring 12. The other side of the sliding plate 11 is fixedly installed with a blocking rod 15. One end of the blocking rod 15 penetrates through the first sliding cavity 10 and extends into the device groove 2 and contacts the baffle 5.

[0035] As a preferred embodiment, two first contact heads 13 are symmetrically and fixedly installed on one side of the sliding plate 11. The inner wall of the first sliding cavity 10 is symmetrically fixedly installed with second contact heads 14 that cooperate with the two first contact heads 13. Both of the two second contact heads 14 are electrically connected to the second motor 18.

[0036] After the two baffles 5 move, since the blocking rod 15 inside the first sliding cavity 10 is no longer blocked by the baffle 5, the sliding plate 11 will be pushed to move under the elastic force of the first spring 12, so that the two first contact heads 13 and the two second contact heads 14 come into contact with each other, thereby conducting the circuit and starting the second motor 18 inside the ventilation opening 16. Subsequently, the second motor 18 will drive the rotating rod 19 and the fan blade 20 to rotate, so as to blow the external air into the device groove 2 to complete the ventilation of the inside of the device groove 2.

[0037] As a preferred embodiment, the clamping mechanism includes a slider 24 slidably installed inside the second sliding cavity 23. One side of the slider 24 is fixedly installed with a second spring 26. The slider 24 is elastically connected to the inner wall of the second sliding cavity 23 through the second spring 26. The other side of the slider 24 is fixedly installed with an insertion rod 25. Sockets 22 are opened at both ends of the filter plate 21. One end of the insertion rod 25 penetrates through the side wall of the second sliding cavity 23 and is inserted into the socket 22.

[0038] The bottom of the cabinet body 1 is fixed with a filter plate 21. During the ventilation process, the dust in the external gas will be filtered by the filter plate 21. The slider 24 inside the second sliding cavity 23 will, under the elastic force of the second spring 26, push the insertion rod 25 into the socket 22 to complete the fixation of the filter plate 21.

[0039] As a preferred embodiment, a chute 27 is opened at the bottom of the cabinet body 1. A sliding opening that cooperates with the chute 27 is opened at the bottom of the second sliding cavity 23. The lower end of the slider 24 extends into the chute 27. An electric heating wire is also fixedly installed inside the filter plate 21. The electric heating wire is electrically connected to the two second contact heads 14.

[0040] During the ventilation process, the heating wire also generates heat, so that the gas blown into the interior of the device tank 2 is hot air, facilitating the dehumidification of the interior of the device tank 2.

[0041] The usage method applicable to the described temperature control device for low-voltage switch cabinets includes the following steps:

[0042] S1: When dissipating heat from the interior of the cabinet body 1, start the first motor 6 located on one side of the cabinet body 1. Subsequently, the first motor 6 drives the double-headed threaded rod 3 to rotate. Then, through the nuts 4, it drives the two baffles 5 to approach each other, no longer closing the strip-shaped openings 28 on both sides, facilitating ventilation and heat dissipation of the interior of the device tank 2. After the upper double-headed threaded rod 3 rotates, it drives the lower double-headed threaded rod 3 to rotate simultaneously through the transmission wheel 8 and the transmission belt 9 inside the strip-shaped cavity 7, ensuring that the upper and lower ends of the two baffles 5 are on the same vertical section to ensure stability during the movement;

[0043] S2: After the two baffles 5 move, since the stop rod 15 inside the first sliding cavity 10 is no longer blocked by the baffle 5, the sliding plate 11 is pushed to move under the elastic force of the first spring 12, so that the two first contacts 13 and the two second contacts 14 come into contact with each other, conducting the circuit and starting the second motor 18 inside the ventilation opening 16. Subsequently, the second motor 18 drives the rotating rod 19 and the fan blade 20 to rotate, blowing the external air into the interior of the device tank 2 to complete the ventilation of the interior of the device tank 2;

[0044] S3: A filter plate 21 is fixed at the bottom of the cabinet body 1. During the ventilation process, the dust in the external gas is filtered by the filter plate 21. The slider 24 inside the second sliding cavity 23 is pushed by the elastic force of the second spring 26 to insert the insertion rod 25 into the insertion opening 22 to complete the fixation of the filter plate 21. During the ventilation process, the heating wire also generates heat, so that the gas blown into the interior of the device tank 2 is hot air, facilitating the dehumidification of the interior of the device tank 2.

[0045] When the present invention is in use, when dissipating heat from the interior of the cabinet 1, the first motor 6 located on one side of the cabinet 1 is started. Subsequently, the first motor 6 drives the double-headed threaded rod 3 to rotate, and then drives the two baffles 5 to approach each other through the nuts 4, so that the strip-shaped openings 28 on both sides are no longer closed, facilitating ventilation and heat dissipation inside the device slot 2. After the double-headed threaded rod 3 at the upper end rotates, it drives the double-headed threaded rod 3 at the lower end to rotate simultaneously through the transmission wheels 8 and the transmission belt 9 inside the strip-shaped cavity 7, ensuring that the upper and lower ends of the two baffles 5 are on the same vertical section to ensure the stability during movement. After the two baffles 5 move, since the stop rod 15 inside the first sliding cavity 10 is no longer blocked by the baffle 5, the sliding plate 11 will be pushed to move under the elastic force of the first spring 12, so that the two first contact heads 13 are in contact with the two second contact heads 14, thus conducting the circuit and starting the second motor 18 inside the ventilation opening 16. Subsequently, the second motor 18 drives the rotating rod 19 and the fan blade 20 to rotate, blowing the external air into the interior of the device slot 2 to complete the ventilation of the interior of the device slot 2. A filter plate 21 is fixed to the bottom of the cabinet 1. During the ventilation process, the dust in the external gas will be filtered by the filter plate 21. The slider 24 inside the second sliding cavity 23 will push the insertion rod 25 into the insertion opening 22 under the elastic force of the second spring 26 to complete the fixation of the filter plate 21. During the ventilation process, the heating wire will also generate heat, making the gas blown into the interior of the device slot 2 hot air to facilitate dehumidification of the interior of the device slot 2.

[0046] The present invention has been described in detail above in conjunction with the embodiments with reference to the drawings. Those of ordinary skill in the art can make various variations to the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation to the present invention, and the present invention will take the scope defined by the appended claims as the protection scope.

Claims

1. A temperature control device for a low-voltage switchgear cabinet, comprising a cabinet body (1), characterized in that: A device slot (2) is provided inside the cabinet body (1). A plurality of strip-shaped openings (28) for ventilation are evenly spaced on both side walls of the cabinet body (1). Two baffles (5) for closing the plurality of strip-shaped openings (28) are symmetrically arranged inside the device slot (2). A driving mechanism for driving the two baffles (5) to move is provided inside the cabinet body (1). A ventilation opening (16) is provided at the bottom of the cabinet body (1). A ventilation mechanism is provided inside the ventilation opening (16). A first sliding cavity (10) is further provided inside the cabinet body (1). An elastic mechanism for controlling the ventilation mechanism to start in cooperation with the driving mechanism is provided inside the first sliding cavity (10). A filter plate (21) is installed inside the ventilation opening (16). A second sliding cavity (23) is provided at the bottom of the cabinet body (1). A clamping mechanism for fixing the filter plate (23) is provided inside the second sliding cavity (23); The driving mechanism includes two double-headed threaded rods (3) symmetrically and rotatably installed inside the cabinet body (1). Nuts (4) are fixedly installed inside both of the two baffles (5). The nuts (4) are in screw drive connection with the double-headed threaded rods (3). A first motor (6) is fixedly installed outside the cabinet body (1). One end of the upper double-headed threaded rod (3) penetrates through the cabinet body (1) and is fixedly connected to the output end of the first motor (6); A strip-shaped cavity (7) is provided on the side wall of the cabinet body (1). Both of the two double-headed threaded rods (3) extend into the strip-shaped cavity (7) and are fixedly installed with transmission wheels (8). The two transmission wheels (8) are in transmission connection through a transmission belt (9); The ventilation mechanism includes a fixed rod (17) fixedly installed inside the ventilation opening (16). A second motor (18) is fixedly installed inside the fixed rod (17). A rotating rod (19) is fixedly installed at the output end of the second motor (18). A fan blade (20) for driving the gas to flow is fixedly installed on the outer edge of the rotating rod (19); The elastic mechanism includes a sliding plate (11) slidably installed inside the first sliding cavity (10). A first spring (12) is fixedly installed on one side of the sliding plate (11). The sliding plate (11) is elastically connected to the inner wall of the first sliding cavity (10) through the first spring (12). A stop rod (15) is fixedly installed on the other side of the sliding plate (11). One end of the stop rod (15) penetrates through the first sliding cavity (10) and extends into the device slot (2) and contacts the baffle (5); Two first contact heads (13) are symmetrically and fixedly installed on one side of the sliding plate (11). Two second contact heads (14) for cooperating with the two first contact heads (13) are symmetrically and fixedly installed on the inner wall of the first sliding cavity (10). Both of the two second contact heads (14) are electrically connected to the second motor (18).

2. The temperature control device for a low-voltage switchgear according to claim 1, wherein: The engaging mechanism includes a slider (24) slidably installed inside the second sliding cavity (23). A second spring (26) is fixedly installed on one side of the slider (24). The slider (24) is elastically connected to the inner wall of the second sliding cavity (23) through the second spring (26).

3. The temperature control device for a low-voltage switchgear according to claim 2, wherein: On the other side of the slider (24), a plug rod (25) is fixedly installed. Sockets (22) are opened at both ends of the filter plate (21). One end of the plug rod (25) penetrates through the side wall of the second sliding cavity (23) and is inserted into the interior of the socket (22).

4. The temperature control device for low-voltage switchgear according to claim 3, characterized in that: A sliding groove (27) is opened at the bottom of the cabinet body (1). A sliding opening matching with the sliding groove (27) is opened at the bottom of the second sliding cavity (23). The lower end of the slider (24) extends into the interior of the sliding groove (27). An electric heating wire is also fixedly installed inside the filter plate (21). The electric heating wire is electrically connected to the two second contact terminals (14).

5. A method for using a temperature control device of a low-voltage switchgear cabinet according to any one of claims 1-4, characterized in that, It includes the following steps: S1: When dissipating heat from the interior of the cabinet body (1), start the first motor (6) located on one side of the cabinet body (1). Subsequently, the first motor (6) drives the double-headed threaded rod (3) to rotate. Then, through the nuts (4), the two baffles (5) are driven to approach each other, thus no longer closing the strip-shaped openings (28) on both sides, so as to facilitate ventilation and heat dissipation inside the device slot (2). After the upper double-headed threaded rod (3) rotates, it drives the lower double-headed threaded rod (3) to rotate simultaneously through the transmission wheels (8) and the transmission belt (9) inside the strip-shaped cavity (7), so as to ensure that the upper and lower ends of the two baffles (5) are located on the same vertical section to ensure the stability during the movement process; S2: After the two baffles (5) move, since the blocking rod (15) inside the first sliding cavity (10) is no longer blocked by the baffle (5), the sliding plate (11) will be pushed to move under the elastic force of the first spring (12), so that the two first contact terminals (13) are in contact with the two second contact terminals (14), thus conducting the circuit and starting the second motor (18) inside the ventilation opening (16). Subsequently, the second motor (18) drives the rotating rod (19) and the fan blade (20) to rotate, so as to blow the external air into the interior of the device slot (2) to complete the ventilation inside the device slot (2); S3: A filter plate (21) is fixed at the bottom of the cabinet body (1). During the ventilation process, the dust in the external gas will be filtered by the filter plate (21). The slider (24) inside the second sliding cavity (23) will, under the elastic force of the second spring (26), push the plug rod (25) into the interior of the socket (22) to complete the fixation of the filter plate (21). During the ventilation process, the electric heating wire will also generate heat, so that the gas blown into the interior of the device slot (2) is hot air to facilitate dehumidification inside the device slot (2).

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