A switch device and heat dissipation control method thereof

Abstract

The present invention provides a switch device and a heat dissipation control method thereof. The switch device comprises a circuit breaker chamber, a busbar chamber, an instrument chamber, a cable chamber, and a heat dissipation module. An assembly chamber is arranged in the circuit breaker chamber, the heat dissipation module is connected to the assembly chamber in a detachable manner, the total air inlet of the heat dissipation module is communicated with the environment, and the total air outlet of the heat dissipation module is communicated with the circuit breaker chamber; a pressure relief channel is formed between the busbar chamber and the instrument chamber, the inlet end of the pressure relief channel is communicated with the circuit breaker chamber, a pressure relief device is arranged at the outlet end of the pressure relief channel, a heat exchange channel is arranged in the cable chamber, the heat exchange channel is isolated from the inner cavity of the cable chamber, and the heat exchange channel is communicated with the circuit breaker chamber; the present invention can ventilate and dissipate heat in each chamber by arranging the heat dissipation module, the pressure relief channel, and the heat exchange channel inside the switch device, so that each chamber in the switch device can dissipate heat in a timely and effective manner.

Description

Technical Field

[0001] The invention relates to a switch device and a heat dissipation control method thereof, in particular to a center-mounted switch cabinet and a heat dissipation control method thereof. Background Art

[0002] Taking the center-mounted switchgear as an example, switch devices are often used to control, protect, monitor and measure power circuits. For example, they are used in power plants, power transmission of small and medium-sized generators, power reception and transmission of secondary substations of power systems, power distribution of industrial and mining enterprises and institutions, and starting of large high-voltage motors.

[0003] Conventional center-mounted switchgear is usually divided into three layers: upper, middle and lower. The upper layer is the busbar room and instrument room (isolated from each other), the middle layer is the circuit breaker room, and the lower layer is the cable room. In the actual operation of the center-mounted switchgear, the circuit breaker room in the middle layer often generates a lot of heat, which not only easily leads to a local temperature rise in the circuit breaker room, which is very likely to cause electrical safety accidents, but also, as the heat is transferred, it is easy to increase the temperature of the busbar room and instrument room in the upper layer and the cable room in the lower layer, thereby affecting the normal operation of related electrical components in non-circuit breaker rooms, which is very likely to cause certain electrical hazards.

[0004] Although there are related technical solutions for heat dissipation of switch cabinets in the prior art, for example, the Chinese invention patent application document with application number CN201610380747.3 discloses a high-efficiency heat dissipation device for switch cabinets that are isolated from each other, and specifically discloses that the switch cabinet is isolated into different compartments by a plurality of partitions that are longitudinally distributed. However, in actual applications, due to the special settings of each chamber in the center-mounted switch cabinet, it is often difficult to directly apply the relevant heat dissipation structure to the center-mounted switch cabinet, and it is relatively difficult to achieve timely and effective heat dissipation of each chamber in the center-mounted switch cabinet.

[0005] Therefore, how to dissipate heat from each chamber in the center-mounted switch cabinet in a timely and effective manner has become one of the problems that urgently need to be solved in this field. Summary of the invention

[0006] In view of this, the present invention aims to provide a switch device and a heat dissipation control method thereof to solve the problem in the prior art that it is often difficult to dissipate heat in each chamber in a central switch cabinet in a timely and effective manner.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] A switch device comprises a circuit breaker chamber, a busbar chamber, an instrument chamber, a cable chamber, and a heat dissipation module, wherein an assembly chamber is arranged in the circuit breaker chamber, the heat dissipation module is connected to the assembly chamber in a detachable manner, the total air inlet of the heat dissipation module is communicated with the environment, the total air outlet of the heat dissipation module is communicated with the circuit breaker chamber, a pressure relief channel is formed between the busbar chamber and the instrument chamber, the inlet end of the pressure relief channel is communicated with the circuit breaker chamber, a pressure relief device is arranged at the outlet end of the pressure relief channel, a heat exchange channel is arranged in the cable chamber, the heat exchange channel and the inner cavity of the cable chamber are separated from each other, and the heat exchange channel is communicated with the circuit breaker chamber.

[0009] Furthermore, the heat dissipation module includes a shell, which has an air cavity, in which a fan, a first air guiding channel, and a second air guiding channel are arranged, the first air guiding channel and the second air guiding channel are arranged in parallel, the fan includes a first air suction section and a second air suction section, the first air suction section is connected to the outlet of the first air guiding channel, the second air suction section is connected to the outlet of the second air guiding channel, the inlet of the first air guiding channel and the inlet of the second air guiding channel are both connected to the main air inlet, the first air guiding channel is provided with a first valve body and a dehumidification box, and the second air guiding channel is provided with a second valve body.

[0010] Furthermore, the inlet of the dehumidification box is connected to the main air inlet through a first air guide channel, and the outlet of the dehumidification box is connected to the first air suction section of the fan. Hygroscopic salt is arranged in the dehumidification box, and the hygroscopic salt undergoes hydration reaction with water molecules contained in the air flow entering the dehumidification box.

[0011] Preferably, the hygroscopic salt is anhydrous copper sulfate.

[0012] Furthermore, the dehumidification box includes a box body and a sealing cover. The box body has a storage space for storing hygroscopic salt. The sealing cover is sealed and connected to the box body. The sealing cover is provided with an air inlet passage. The air inlet end of the air inlet passage is connected with the first air guide channel through a first valve body. The air outlet end of the air inlet passage extends to the bottom of the storage space in the box body. The first air suction section passes through the sealing cover, and the air inlet end of the first air suction section is connected with the storage space in the box body.

[0013] Furthermore, an air outlet device is provided at the air outlet end of the air inlet passage, an air outlet cavity connected to the air inlet passage is provided inside the air outlet device, a plurality of air outlet pipes are provided on the air outlet device, one end of the air outlet pipe is connected to the air outlet cavity, and an anti-blocking cap is provided on the other end, an air outlet is provided on the side wall of the air outlet pipe, and an air flow slit is formed between the anti-blocking cap and the outer wall of the air outlet device.

[0014] Furthermore, a first regulating baffle is provided at the inlet end of the pressure relief channel, and a second regulating baffle is provided at the inlet end of the heat exchange channel. An regulating damper is provided at one side of the assembly chamber close to the main air inlet, and a telescopic baffle is provided at the main air outlet of the heat dissipation module, and the telescopic baffle is rotatably connected to the main air outlet.

[0015] Furthermore, when the telescopic baffle is rotated and telescoped, the second adjustment baffle can abut against the telescopic baffle.

[0016] Furthermore, the heat dissipation module includes a central controller, an environment detection device, and an in-cabinet detection device, and the central controller is connected to the environment detection device and the in-cabinet detection device respectively.

[0017] A heat dissipation control method for a switch device, the heat dissipation control method is applied to the switch device; the heat dissipation control method comprises: S1, a central controller obtains the temperature T1 in a cabinet in real time through a detection device in the cabinet, and obtains the ambient temperature T2 in real time through an environment detection device; S2, determines whether T1 is greater than a first preset temperature; if yes, proceeds to step S3; if no, proceeds to step S4; S3, determines whether T2 is greater than the first preset temperature; if yes, a reminder device issues a continuous high temperature alarm; if no, proceeds to step S6; S4, determines whether T1 is less than a second preset temperature; if yes, the switch device maintains the current operating state and returns to step S1; if no, proceeds to step S5; S5, determines whether T1-T2 is greater than a preset temperature difference; if yes, proceeds to step S6; if no, the switch device maintains the current operating state, the reminder device issues a temperature drop reminder, and returns to step S1; S6, the heat dissipation module starts the heat dissipation process.

[0018] Compared with the prior art, the switch device and the heat dissipation control method thereof described in the present invention have the following advantages:

[0019] A switch device and a heat dissipation control method thereof described in the present invention, through the arrangement of a heat dissipation module, a pressure relief channel, and a heat exchange channel, inside the switch device, no matter any chamber among the circuit breaker chamber, the busbar chamber, the instrument chamber, and the cable chamber, when its local temperature rises, the heat dissipation airflow can be transported to the switch device through the heat dissipation module, and ventilation and heat dissipation are performed on each chamber inside the switch device, so that each chamber in the switch device can be timely and effectively cooled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 A schematic diagram of the structure of a switch device according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic structural diagram of a switch device according to an embodiment of the present invention after a heat dissipation module is removed;

[0023] Figure 3 A schematic structural diagram of a heat dissipation module in a switch device according to an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of a dehumidification box in a switch device according to an embodiment of the present invention;

[0025] Figure 5 The embodiment of the present invention is Figure 4 A partial enlarged view of the middle A;

[0026] Figure 6 The figure is a top view of an air outlet device in a switch device according to an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Circuit breaker room; 2. Busbar room; 3. Instrument room; 4. Cable room; 5. Assembly room; 51. Adjustment damper; 6. Pressure relief channel; 61. First adjustment baffle; 7. Heat exchange channel; 71. Second adjustment baffle; 8. Heat dissipation module; 801. Main air inlet; 802. Main air outlet; 804. First valve body; 805. First air guide channel; 8051. Box body; 8052. Sealing cover; 8053. Air intake passage; 8054. Image detector; 8055, air outlet device; 80551, air outlet cavity; 8056, air outlet pipe; 8057, air outlet; 8058, anti-blocking cap; 8059, air flow slit; 806, second valve body; 807, second air guide channel; 808, fan; 8081, first air suction section; 8082, second air suction section; 809, telescopic baffle; 810, shell; 811, air cavity; 9, pressure relief device; 10, hygroscopic salt. DETAILED DESCRIPTION

[0029] The inventive concepts of the present disclosure will be described below using terms commonly used by those skilled in the art to convey the essence of their work to other persons skilled in the art. However, these inventive concepts can be embodied in many different forms and should not be considered limited to the embodiments described herein.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0032] In the existing center-mounted switchgear, it is often divided into three layers: upper, middle and lower. The upper layer is the busbar room and instrument room (isolated from each other), the middle layer is the circuit breaker room, and the lower layer is the cable room. In the actual operation of the center-mounted switchgear, the circuit breaker room in the middle layer often generates a large amount of heat, which not only easily causes the local temperature of the circuit breaker room to rise, which is very likely to cause electrical safety accidents, but also with the transfer of heat, it is easy to cause the temperature of the busbar room and instrument room in the upper layer and the cable room in the lower layer to rise at the same time, thereby affecting the normal operation of related electrical components in non-circuit breaker rooms, which is very likely to cause certain electrical hazards. For this reason, how to dissipate heat from each chamber in the center-mounted switchgear in a timely and effective manner has become one of the problems that need to be solved urgently in this field.

[0033] In order to solve the problem that it is difficult to dissipate heat in each chamber of the center-mounted switch cabinet in a timely and effective manner in the prior art, this embodiment provides a switch device, wherein the switch device is divided into a plurality of chambers by a plurality of partitions, namely, a circuit breaker chamber 1, a busbar chamber 2, an instrument chamber 3, and a cable chamber 4. Among them, inside the switch device, the circuit breaker chamber 1 is arranged in the middle layer, and since it is a conventional structure of the center-mounted switch cabinet, it will not be described in detail.

[0034] This application focuses on the heat dissipation related structure in the switch device, as shown in the attached Figure 1-6 As shown, the switch device includes a heat dissipation module 8, an assembly chamber 5 is arranged in the circuit breaker chamber 1, and the heat dissipation module 8 is connected to the assembly chamber 5 in a detachable manner. A total air inlet 801 is arranged at one end of the heat dissipation module 8, and a total air outlet 802 is arranged at the other end. The total air inlet 801 is connected to the environment, and the total air outlet 802 is connected to the circuit breaker chamber 1, which is used for at least ventilating and dissipating heat (i.e., air cooling) the circuit breaker chamber 1.

[0035] In addition, on the basis of satisfying the heat dissipation of the circuit breaker chamber 1, in order to provide heat dissipation for other chambers, a pressure relief channel 6 is formed between the busbar chamber 2 and the instrument chamber 3, the inlet end of the pressure relief channel 6 is connected with the circuit breaker chamber 1, and a pressure relief device 9 is provided at the outlet end of the pressure relief channel 6, and the heat dissipation airflow is re-transported to the external environment through the pressure relief device 9. A heat exchange channel 7 is provided in the cable chamber 4, and the heat exchange channel 7 is isolated from the inner cavity of the cable chamber 4, that is, the heat exchange channel 7 is not directly connected with the cavity of the cable chamber 4, but the heat exchange channel 7 is connected with the circuit breaker chamber 1. Of course, a pressure relief device 9 can also be provided at the end of the heat exchange channel 7 away from the circuit breaker chamber 1, and the heat dissipation airflow is re-transported to the external environment through the pressure relief device 9.

[0036] Thus, by setting the heat dissipation module 8, the pressure relief channel 6 and the heat exchange channel 7, inside the switch device, no matter any chamber among the circuit breaker chamber 1, the busbar chamber 2, the instrument chamber 3 and the cable chamber 4, when its local temperature rises, the heat dissipation airflow can be transported to the switch device through the heat dissipation module 8, and each chamber inside the switch device can be ventilated and cooled, so that each chamber in the switch device can be cooled in time and effectively.

[0037] In order to adjust the corresponding heat dissipation air flow according to actual needs, a first adjustment baffle 61 is provided at the inlet end of the pressure relief channel 6, and a second adjustment baffle 71 is provided at the inlet end of the heat exchange channel 7. The opening of the pressure relief channel 6 and the heat exchange channel 7 are adjusted by adjusting the first adjustment baffle 61 and the second adjustment baffle 71, respectively, so as to adjust the heat dissipation air flow entering the pressure relief channel 6 and the heat exchange channel 7. When performing ventilation and heat dissipation, the heat dissipation module 8 first sends the heat dissipation airflow to the circuit breaker chamber 1 to dissipate heat in the chamber where the switch device is most likely to generate heat. With the flow of the heat dissipation airflow and the adjustment of the first adjustment baffle 61 and the second adjustment baffle 71, the heat dissipation airflow entering the pressure relief channel 6 and the heat exchange channel 7 is adjusted, so that the heat dissipation airflow can cool the side walls of the pressure relief channel 6 and the side walls of the heat exchange channel 7. With the conduction of temperature, it is equivalent to being able to dissipate heat to the busbar chamber 2, the instrument chamber 3, and the cable chamber 4, which have relatively small heat generation.

[0038] The pressure relief channel 6 serves as an outflow channel for the heat dissipation airflow. When the switch device does not need ventilation and heat dissipation, the first adjustment baffle 61 is sealed and connected to the pressure relief channel 6, or the pressure relief device 9 is in a closed state to prevent the external environment from causing excessive disturbance to the internal environment of the switch device. During the ventilation and heat dissipation process, in order to prevent foreign objects from being sucked in, a filter structure can be set at the main air inlet 801.

[0039] In addition, considering that when the switch device does not need ventilation and heat dissipation, in order to ensure the airtightness of the circuit breaker chamber 1, the assembly chamber 5 is provided with an adjusting damper 51 on the side close to the main air inlet 801. When ventilation and heat dissipation are required, the adjusting damper 51 is opened. When ventilation and heat dissipation are not required, the adjusting damper 51 is sealed and connected to the main air inlet 801 to ensure the relative sealing performance of the inside of the circuit breaker chamber 1 and the inside of the entire switch device.

[0040] The total air outlet 802 of the heat dissipation module 8 is provided with a telescopic baffle 809, and the telescopic baffle 809 is connected to the total air outlet 802 in a rotatable manner. By adjusting the rotation angle and telescopic length of the telescopic baffle 809, the opening and air outlet direction of the total air outlet 802 can be adjusted. Accordingly, the telescopic baffle 809 can be regarded as a component of the heat dissipation module 8, and can also be used as an adjustment component set at the total air outlet 802 of the assembly chamber 5. Therefore, by setting the adjusting damper 51 and the telescopic baffle 809, the assembly chamber 5 can be sealed to a certain extent at the total air outlet 802 and the total air outlet 802, which not only improves the relative sealing performance inside the circuit breaker chamber 1 and the entire switch device, but also enables the heat dissipation module 8 to be in a relatively independent assembly chamber 5, which is conducive to ensuring that the heat dissipation module 8 has a relatively independent setting and operating environment to avoid interference from foreign objects.

[0041] When the telescopic baffle 809 rotates and retracts, the second adjusting baffle 71 can abut against the telescopic baffle 809 to form a guiding effect, so that most of the heat dissipation airflow flowing out of the main air outlet 802 can directly enter the heat exchange channel 7 along the telescopic baffle 809 and the second adjusting baffle 71, which greatly improves the heat dissipation efficiency of the cable chamber 4 and can effectively prevent excessive heat dissipation airflow from being directly discharged through the pressure relief channel 6, resulting in insufficient heat dissipation in the cable chamber 4.

[0042] The heat dissipation module 8 includes a shell 810, wherein the shell 810 has a wind cavity 811, wherein one end of the shell 810 opens as a total air inlet 801, and the other end opens as a total air outlet 802, wherein a fan 808, a first air guide channel 805, and a second air guide channel 807 are arranged in the wind cavity 811, wherein the first air guide channel 805 and the second air guide channel 807 are arranged in parallel, wherein the fan 808 includes two independent air suction pipe sections, which are respectively recorded as a first air suction section 8081 and a second air suction section 8082, wherein the first air suction section 808 1 is connected to the outlet of the first air guide channel 805, the second air suction section 8082 is connected to the outlet of the second air guide channel 807, the inlet of the first air guide channel 805 and the inlet of the second air guide channel 807 are both connected to the main air inlet 801, the first air guide channel 805 is provided with a first valve body 804 and a dehumidification box, and the second air guide channel 807 is provided with a second valve body 806; so that when ventilation and heat dissipation are required, it can be determined whether to use the first air guide channel 805 or the second air guide channel 807 for air intake according to the air humidity in the current external environment. If the air humidity is too high, the second air guide channel 807 can be closed, and the first air guide channel 805 can be used for dehumidification before ventilation and heat dissipation. If the air humidity is not high, the second air guide channel 807 can be directly used for ventilation and heat dissipation. When the first air guide channel 805 is not used for air intake, the default state of the first valve body 804 is closed to extend the service life of the hygroscopic salt 10. There may be no restriction on the outlet side of the dehumidification box, so that it can maintain a certain moisture absorption effect on the internal environment of the switch device to a certain extent.

[0043] For the dehumidification box, the inlet of the dehumidification box is connected to the main air inlet 801 through the first air guide channel 805, and the outlet of the dehumidification box is connected to the first air suction section 8081 of the fan 808. Hygroscopic salt 10 is arranged in the dehumidification box, and hydration reaction is carried out between the hygroscopic salt 10 and the water molecules contained in the air flow entering the dehumidification box. Specifically, the dehumidification box includes a box body 8051 and a sealing cover 8052. The box body 8051 has a storage space for storing hygroscopic salt 10, which is anhydrous copper sulfate. The sealing cover 8052 is sealed and connected to the box body 8051. The sealing cover 8052 is provided with an air intake passage 8053. The air intake end of the air intake passage 8053 is connected to the first air guide channel 805 through the first valve body 804. The air outlet end of the air intake passage 8053 extends to the bottom of the storage space in the box body 8051, and the air outlet end of the air intake passage 8053 can at least extend to the inside or bottom of the anhydrous copper sulfate material pile. The first air suction section 8081 penetrates the sealing cover 8052, so that the air inlet end of the first air suction section 8081 is connected to the material storage space in the box body 8051; preferably, the air inlet end of the first air suction section 8081 is arranged above the anhydrous copper sulfate material pile and does not contact it, so as to reduce the probability of hygroscopic salt entering the first air suction section 8081 along with the air flow.

[0044] Therefore, when the present application utilizes a dehumidification box to absorb moisture and dry the heat dissipation airflow, on the one hand, there is no need to set up conventional electrical equipment such as condensation dehumidification and electric heating dehumidification, thereby reducing the power consumption of the switch device. On the other hand, compared with the drying filter element on the market, the application cost of the hygroscopic salt 10 is relatively low. At the same time, the salt substance (hydrate) formed by the hygroscopic salt after dehumidification can be recycled again after a simple heating dehydration or weathering drying dehydration process, which can be recycled simply and conveniently, reducing the generation of waste. In addition, the hygroscopic salt in the present application is anhydrous copper sulfate. Compared with conventional desiccants, anhydrous copper sulfate is a white or gray powder. After absorbing moisture, anhydrous copper sulfate forms blue copper sulfate pentahydrate, so that people can promptly identify that the anhydrous copper sulfate has been used up when the white powder completely turns blue, and promptly replace the anhydrous copper sulfate to ensure that the hygroscopic and drying function of the dehumidification box is continuously effective.

[0045] An air outlet device 8055 is provided at the air outlet end of the air inlet passage 8053, and an air outlet cavity 80551 connected to the air inlet passage 8053 is provided in the air outlet device 8055. The air outlet device 8055 is provided with multiple air outlet pipes 8056, one end of the air outlet pipe 8056 is connected to the air outlet cavity 80551, and the other end is provided with an anti-blocking cap 8058, and an air outlet 8057 is provided on the side wall of the air outlet pipe 8056. An air flow slit 8059 is formed between the anti-blocking cap 8058 and the outer wall of the air outlet device 8055, so that the anti-blocking cap 8058 can shield the air outlet pipe 8056 and the air outlet 8057 to prevent the anhydrous copper sulfate material pile from directly accumulating at the air outlet pipe 8056 and the air outlet 8057 from being blocked, thereby ensuring the normal circulation of the air flow.

[0046] Preferably, the air outlet device 8055 is a flat hollow structure, and its horizontal area (cross-sectional area) is slightly smaller than the bottom horizontal area of ​​the storage space in the box body 8051. The air outlet pipe 8056 is connected to the upper side wall of the air outlet device 8055 in a uniform array, thereby increasing the contact area between the airflow and the anhydrous copper sulfate material on the one hand, which is beneficial to improving the dehumidification efficiency. On the other hand, the airflow can flow evenly in the box body 8051 on the same horizontal cross-section, ensuring that the anhydrous copper sulfate on the same horizontal cross-section can fully absorb moisture, which is beneficial to improving the single utilization rate of the hygroscopic salt and avoiding the problem that some hygroscopic salts cannot play a dehumidifying role due to the excessive concentration of moisture absorption positions.

[0047] In order to avoid excessive wind resistance in the dehumidification box, another fan can be set in the first air guide channel 805 upstream of the dehumidification box to increase the wind pressure; in addition, the first air suction section 8081 can be provided with a filtering structure for filtering the airflow after dehumidification and drying to prevent the hygroscopic salt 10 from entering the circuit breaker chamber 1 with the airflow. The filtering structure can be conventional filtering equipment such as conventional filter screens and filters, which will not be elaborated.

[0048] In order to improve the automation degree of the heat dissipation module 8, the heat dissipation module 8 includes a central controller, an environmental detection device, and an in-cabinet detection device. The environmental detection device and the in-cabinet detection device are both conventional temperature detectors. The central controller is connected to the fan 808, the first valve body 804, and the second valve body 806, and is used to control the operation of the heat dissipation module 8 and the connection of the pipeline; the central controller is connected to the environmental detection device, and is used to detect at least the temperature parameters and humidity parameters of the environment. The temperature parameters at least include environmental temperature data and environmental temperature change trends. The humidity parameters at least include environmental humidity data and environmental humidity change trends. For humidity, it can be an absolute humidity value or a relative humidity value. Correspondingly, for those skilled in the art, the absolute humidity value and the relative humidity value at the same temperature can be converted to each other, and no further description is given. The central controller is connected to the in-cabinet detection device, and is used to detect at least the temperature in the cabinet, and specifically, it can be the temperature of each chamber in the switch device. In order to avoid confusion in naming and inconvenience in understanding, without making special naming, the temperature of any chamber in this application is uniformly referred to as "cabinet temperature".

[0049] The dehumidification box includes an image detection device, which is a conventional image detector 8054, such as a camera, a photographic device, a color acquisition device, etc. The central controller is connected to the image detection device for detecting the color of the anhydrous copper sulfate material. The box body 8051 of the dehumidification box can be made of a transparent material, such as transparent glass, transparent plastic, etc. The image detection device can be arranged outside the dehumidification box to detect the color of the anhydrous copper sulfate material in the box body 8051; as shown in the attached Figure 4 As shown, the image detection device can also be arranged inside the dehumidification box, and the image detection device is connected to the upper inner wall of the box body 8051, or is connected to the inner side of the sealing cover 8052. In addition, the switch device is provided with a reminder device, and the central controller is connected to the reminder device, which is used to remind or alarm the engineer in certain specific situations. The reminder device includes an alarm light and a voice alarm for sound and light alarm.

[0050] On this basis, the present application proposes a heat dissipation control method for a switch device, the heat dissipation control method comprising:

[0051] S1, the central controller obtains the cabinet temperature T1 in real time through the cabinet detection device, and obtains the ambient temperature T2 in real time through the environmental detection device;

[0052] S2, determine whether T1 is greater than the first preset temperature; if yes, proceed to step S3; if no, proceed to step S4;

[0053] Among them, T1 can be the temperature of any chamber in the circuit breaker chamber 1, busbar chamber 2, instrument chamber 3, and cable chamber 4; or in other words, as long as one of the chambers in the switch device satisfies T1 greater than the first preset temperature, step S3 can be performed. The first preset temperature is a factory preset parameter; for all preset parameters in this application, in the field of switch cabinets, the requirements for safety levels vary according to different application scenarios. The relevant preset parameters in this application need to be determined by engineers based on actual application conditions, and the determined relevant preset parameters are set to the relevant control program of the central controller. This application does not impose specific restrictions on it, but only provides individual examples for reference. The relevant preset parameters in the following text are all like this and will not be repeated. In this application, the first preset temperature is 70℃-80℃.

[0054] S3, determine whether T2 is greater than the first preset temperature; if yes, the reminder device will issue a continuous high temperature alarm; if no, proceed to step S6;

[0055] In the present application, the first preset temperature is 45°C-55°C, or the first preset temperature is a preset temperature value that is higher than the maximum value of the conventional temperature in daily life. When T1 is greater than the first preset temperature and T2 is greater than the first preset temperature, it means that the switching device as a whole may be in an extremely high temperature environment, and there is even a possibility of fire. If the air cooling is turned on blindly, there may be certain safety hazards, and it is necessary to promptly issue a high temperature alarm and notify the engineer to promptly investigate and deal with the relevant high temperature hazards.

[0056] S4, determine whether T1 is less than the second preset temperature; if yes, the switch device maintains the current operating state and returns to step S1; if no, proceed to step S5;

[0057] In the present application, the second preset temperature is 40° C.-50° C. If T1 is between the first preset temperature and the second preset temperature, it means that the switch device is in an environment where heat dissipation is relatively required, and step S5 is performed.

[0058] S5, determine whether T1-T2 is greater than a preset temperature difference; if yes, proceed to step S6; if no, the switch device maintains the current operating state, the reminder device issues a temperature drop reminder, and returns to step S1;

[0059] The preset temperature difference is 5℃-8℃. Since this application mainly focuses on air cooling, when there is a certain temperature gradient between the temperature inside the cabinet and the ambient temperature, a good heat dissipation effect can be produced, and air cooling can be started. If the temperature inside the cabinet is close to the ambient temperature, or even in extreme cases where the ambient temperature is higher than the temperature inside the cabinet, not only will the heat dissipation effect not be guaranteed, but external high-temperature airflow may also be introduced, inducing safety hazards. At this time, the switch device maintains the current operating state and sends a cooling reminder to the engineer; of course, if other forced heat dissipation equipment, such as air conditioners, are provided in the switch device, they can also be turned on in time, which will not be elaborated in this application.

[0060] S6. The heat dissipation module 8 starts the heat dissipation process.

[0061] In the heat dissipation process of step S6, the central controller first opens the damper 51 to connect the main air inlet 801 to the external environment; in addition, the central controller controls the opening and closing of the first valve body 804, the second valve body 806, and the fan 808. The central controller is connected to the pressure relief device 9 to adjust the opening and closing of the pressure relief device 9 as needed; the central controller can also be connected to the first adjustment baffle 61, the second adjustment baffle 71, and the telescopic baffle 809 to control the rotation angle of each baffle and the telescopic length of the telescopic baffle 809, so as to adjust the flow direction of the airflow according to the actual high temperature position and guide the heat dissipation airflow to the actual high temperature occurrence point. For example: if the high temperature point is in the circuit breaker chamber 1, the first adjusting baffle 61 and the second adjusting baffle 71 can be additionally adjusted to reduce the air intake into the pressure relief channel 6 and the heat exchange channel 7, so that the airflow can fully flow in the circuit breaker chamber 1 for cooling; if the high temperature point is in the cable chamber 4, the second adjusting baffle 71 and the telescopic baffle 809 can be additionally adjusted to make the second adjusting baffle 71 abut against the telescopic baffle 809, so that most of the airflow is directly introduced into the heat exchange channel 7; if the high temperature point is in the busbar chamber 2 or the instrument chamber 3, the first adjusting baffle 61 and the pressure relief device 9 can be additionally adjusted to increase the airflow rate entering the pressure relief channel 6.

[0062] In the process of air cooling and heat dissipation in step S6, considering the influence of humidity in the external environment on the cabinet, in order to ensure that the cabinet is not only in a suitable temperature state, but also in a good humidity environment, to reduce safety hazards. To this end, this application further introduces step S6 based on the above content.

[0063] Step S6 includes:

[0064] S61, the central controller obtains the humidity data of the environment in real time through the environment detection device;

[0065] S62, determining whether the humidity data meets the first preset humidity condition; if yes, proceed to step S63; if no, proceed to step S66;

[0066] The first preset humidity condition is that the humidity data is greater than the first preset humidity. Among them, the humidity data can be an absolute humidity value or a relative humidity value, and the first preset humidity is a preset humidity parameter, which is also the corresponding absolute humidity value or relative humidity value. According to the different security level requirements of different application scenarios, the first preset humidity is not specifically restricted in this application, and only individual examples are provided for reference. For example, in an application scenario with a higher security level requirement, the preset humidity parameter may be a relative humidity of 30% at normal temperature (20°C); in an application scenario with a lower security level requirement, the preset humidity parameter may be a relative humidity of 60% at normal temperature (20°C). In view of the fact that absolute humidity values ​​and relative humidity values ​​at the same temperature can be converted to each other, this application no longer gives examples of absolute humidity values.

[0067] S63, the central controller detects the color of the hygroscopic salt 10 in the current dehumidification box through the image detector 8054;

[0068] S64, determining whether the color of the hygroscopic salt 10 in the current dehumidification box is blue; if yes, the reminder device issues a material change alarm; if no, proceeding to step S65;

[0069] S65, the central controller controls the first valve body 804 to open, closes the second valve body 806, and turns on the fan 808 to dissipate heat from the switch device;

[0070] S66. The central controller controls the first valve body 804 to close, and opens the second valve body 806 and the fan 808 in sequence to dissipate heat for the switch device.

[0071] For the color detection and analysis of the hygroscopic salt 10 in steps S63-S64, it can be run separately and regularly to detect the state of the anhydrous copper sulfate material. Compared with the prior art, it can timely detect and determine that the anhydrous copper sulfate changes from white powder to blue, automatically identify that the anhydrous copper sulfate has been exhausted, and remind engineers to replace materials to ensure that the dehumidification function of the dehumidification box is continuously effective. At the same time, the external environmental humidity is analyzed through step S62, and then steps S65 and S66 are respectively executed according to the actual analysis results to perform air cooling after dehumidification or direct air cooling. In steps S65 and S66, the first adjustment baffle 61, the second adjustment baffle 71, the telescopic baffle 809, the pressure relief device 9 and other components can also be regulated, which is consistent with the above and will not be repeated.

[0072] In the present invention, any switch device may include the relevant structures and assembly relationships provided in this embodiment, as well as the relevant heat dissipation control method provided in this embodiment in real time. The switch device also includes conventional switch cabinet components such as a cabinet body, a circuit breaker, and a protector. Since the relevant conventional components and their settings are all prior art, they will not be elaborated here.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A switch device, characterized in that: The invention comprises a circuit breaker chamber (1), a busbar chamber (2), an instrument chamber (3), a cable chamber (4), and a heat dissipation module (8); an assembly chamber (5) is arranged in the circuit breaker chamber (1); the heat dissipation module (8) is connected to the assembly chamber (5) in a detachable manner; a total air inlet (801) of the heat dissipation module (8) is in communication with the environment; and a total air outlet (802) of the heat dissipation module (8) is in communication with the circuit breaker chamber (1); a pressure relief channel (6) is formed between the busbar chamber (2) and the instrument chamber (3); an inlet end of the pressure relief channel (6) is in communication with the circuit breaker chamber (1); a pressure relief device (9) is arranged at an outlet end of the pressure relief channel (6); a heat exchange channel (7) is arranged in the cable chamber (4); the heat exchange channel (7) and the inner cavity of the cable chamber (4) are isolated from each other; and the heat exchange channel (7) is in communication with the circuit breaker chamber (1); The heat dissipation module (8) comprises a shell (810), wherein the shell (810) has an air cavity (811), wherein a fan (808), a first air guide channel (805), and a second air guide channel (807) are arranged in the air cavity (811), wherein the first air guide channel (805) and the second air guide channel (807) are arranged in parallel, wherein the fan (808) comprises a first air suction section (8081) and a second air suction section (8082), wherein the first air suction section (8081) is connected to the outlet of the first air guide channel (805), wherein the second air suction section (8082) is connected to the outlet of the second air guide channel (807), wherein the inlet of the first air guide channel (805) and the inlet of the second air guide channel (807) are both connected to the main air inlet (801), wherein the first air guide channel (805) is provided with a first valve body (804) and a dehumidification box, and wherein the second air guide channel (807) is provided with a second valve body (806).

2. A switch device according to claim 1, characterized in that: The inlet of the dehumidification box is connected to the main air inlet (801) through the first air guide channel (805), and the outlet of the dehumidification box is connected to the first air suction section (8081) of the fan (808). Hygroscopic salt (10) is arranged in the dehumidification box, and the hygroscopic salt (10) reacts with water molecules contained in the air flow entering the dehumidification box.

3. A switch device according to claim 2, characterized in that: The hygroscopic salt (10) is anhydrous copper sulfate.

4. A switch device according to claim 2, characterized in that: The dehumidification box comprises a box body (8051) and a sealing cover (8052). The box body (8051) has a storage space for storing hygroscopic salt (10). The sealing cover (8052) is sealed and connected to the box body (8051). The sealing cover (8052) is provided with an air intake passage (8053). The air intake end of the air intake passage (8053) is connected to the first air guide channel (805) through the first valve body (804). The air outlet end of the air intake passage (8053) extends to the bottom of the storage space in the box body (8051). The first air suction section (8081) passes through the sealing cover (8052). The air intake end of the first air suction section (8081) is connected to the storage space in the box body (8051).

5. A switch device according to claim 4, characterized in that: An air outlet device (8055) is provided at the air outlet end of the air inlet passage (8053), and an air outlet cavity (80551) connected to the air inlet passage (8053) is provided inside the air outlet device (8055). The air outlet device (8055) is provided with a plurality of air outlet pipes (8056), one end of the air outlet pipe (8056) is connected to the air outlet cavity (80551), and the other end is provided with an anti-blocking cap (8058), and an air outlet (8057) is provided on the side wall of the air outlet pipe (8056), and an air flow slit (8059) is formed between the anti-blocking cap (8058) and the outer wall of the air outlet device (8055).

6. A switch device according to claim 1, characterized in that: A first regulating baffle (61) is provided at the inlet end of the pressure relief channel (6), a second regulating baffle (71) is provided at the inlet end of the heat exchange channel (7), an regulating damper (51) is provided on a side of the assembly chamber (5) close to the main air inlet (801), and a telescopic baffle (809) is provided at the main air outlet (802) of the heat dissipation module (8), and the telescopic baffle (809) is connected to the main air outlet (802) in a rotatable manner.

7. A switch device according to claim 6, characterized in that: When the telescopic baffle (809) rotates and telescopes, the second adjustment baffle (71) can abut against the telescopic baffle (809).

8. A switch device according to claim 1, characterized in that: The heat dissipation module (8) comprises a central controller, an environment detection device, and an in-cabinet detection device, and the central controller is connected to the environment detection device and the in-cabinet detection device respectively.

9. A heat dissipation control method for a switch device, characterized in that: The heat dissipation control method is applied to the switch device according to any one of claims 1 to 8; The heat dissipation control method comprises: S1, the central controller obtains the cabinet temperature T1 in real time through the cabinet detection device, and obtains the ambient temperature T2 in real time through the environmental detection device; S2, determine whether T1 is greater than the first preset temperature; if yes, proceed to step S3; if no, proceed to step S4; S3, determine whether T2 is greater than the first preset temperature; if yes, the reminder device will issue a continuous high temperature alarm; if no, proceed to step S6; S4, determine whether T1 is less than the second preset temperature; if yes, the switch device maintains the current operating state and returns to step S1; if no, proceed to step S5; S5, determine whether T1-T2 is greater than a preset temperature difference; if yes, proceed to step S6; if no, the switch device maintains the current operating state, the reminder device issues a temperature drop reminder, and returns to step S1; S6, the heat dissipation module (8) starts the heat dissipation process.

Images