Power distribution cabinet with automatic cooling function based on interior of steel plant

Abstract

The utility model relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet with an automatic cooling function based on the interior of a steel plant, which separates cold air from air compressed by a compressed air system by using a vortex tube cooler to cool the interior of the cabinet body. The cooling effect in a high-temperature environment can be improved, pollution of dust to electrical elements in the power distribution cabinet can be avoided, the cabinet body is coated with the heat preservation layer, heat preservation can be conducted on the power distribution cabinet, and the influence of external high temperature on the temperature in the power distribution cabinet through heat radiation can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet located inside a steelmaking plant and having an automatic cooling function. Background Art

[0002] On-site power distribution cabinets are widely used in various industries, especially in the steel industry. As a molten metal industry, the steel industry is affected by high-temperature hot metals, and the internal ambient temperature of the plant is relatively high. The ambient temperature above the steelmaking converter reaches 70℃-80℃ and above. If the temperature rise or ambient temperature of on-site power distribution boxes, distribution cabinets, control cabinets and other control equipment exceeds the allowable limit during operation, equipment failure will occur, resulting in the termination of the production process and even causing serious safety and environmental accidents.

[0003] The power distribution cabinet located in the power distribution room can ensure the working temperature of the components by relying on the designed mechanical ventilation and the refrigeration equipment (air conditioner) configured in the power distribution room. In the natural ventilation type heat dissipation method, the air outside the cabinet and the air inside the cabinet are convected, and the natural wind is used to exchange heat for the equipment in the cabinet; in the fan type heat dissipation method, the air outside the cabinet and the air inside the cabinet are convected, and the forced convection of the fan is used for heat replacement. The above two methods are not suitable for the steelmaking converter area with high temperature and high dust content. The cooling fan configured therein aggravates the pollution of external dust to the electrical components in the power distribution. Utility Model Content

[0004] The utility model aims to provide a power distribution cabinet based on the interior of a steelmaking plant and having an automatic cooling function, which helps to improve the cooling effect in a high temperature environment and helps to avoid dust pollution to electrical components inside the power distribution cabinet.

[0005] The specific technical solution provided by the utility model is as follows: a power distribution cabinet with automatic cooling function located inside a steelmaking plant, comprising: a vortex tube cooler and a cabinet body; the cabinet body is also provided with a cabinet body cold air inlet;

[0006] The vortex cooler includes an air inlet and a cold air outlet;

[0007] The air inlet of the vortex tube cooler is connected to the air compression system to obtain compressed air compressed by the air compression system, and separate cold air from the obtained compressed air;

[0008] A compressed air volume regulating valve is provided on the air inlet of the vortex tube cooler to adjust the amount of compressed air obtained;

[0009] The cold air outlet of the vortex tube cooler is connected to the interior of the cabinet through the cold air inlet of the cabinet, so as to send the separated cold air into the interior of the cabinet to dissipate heat inside the cabinet.

[0010] Furthermore, the exterior of the cabinet is coated with a heat-insulating layer.

[0011] Further, it includes: a microcontroller, a temperature sensor arranged inside the cabinet, and a temperature display arranged on the cabinet;

[0012] The temperature sensor is used to detect the real-time temperature inside the cabinet;

[0013] The temperature display and the temperature sensor are both connected to the microcontroller. The microcontroller obtains the real-time temperature detected by the temperature sensor and displays it through the temperature display.

[0014] Furthermore, a first muffler is provided on the cold air outlet to reduce exhaust noise.

[0015] Furthermore, the vortex cooler also includes a hot gas outlet, and a second muffler is arranged on the hot gas outlet to reduce exhaust noise.

[0016] Furthermore, the microcontroller is also connected to the compression controller regulating valve to adjust the opening of the compressed air volume regulating valve according to the real-time temperature detected by the temperature sensor.

[0017] Furthermore, a wireless communication module is provided inside the cabinet, and the wireless communication module is connected to the microcontroller to send the real-time temperature detected by the temperature sensor to the host computer through the wireless communication module and receive the control instructions sent by the host computer to control the opening of the compressed air volume regulating valve.

[0018] Furthermore, the regulating valve for adjusting the compressed air quantity adopts an electromagnetic control valve.

[0019] Furthermore, the microcontroller adopts an STM32 series single-chip microcomputer.

[0020] Furthermore, the temperature sensor adopts MLX90614ESF-DCI high-precision infrared temperature sensor;

[0021] The temperature display uses TD800 series large-screen temperature display;

[0022] The host computer includes a user handheld terminal and a desktop computer installed in the monitoring room.

[0023] The beneficial effects of the utility model are:

[0024] (1) The utility model utilizes a vortex tube cooler to separate cold air from the air compressed by the compressed air system to dissipate heat inside the cabinet, which helps to improve the cooling effect in a high temperature environment and helps to prevent dust from contaminating the electrical components inside the distribution cabinet.

[0025] (2) The outer part of the cabinet is covered with an insulation layer, which not only insulates the cabinet but also helps to reduce the impact of external high temperature on the temperature inside the cabinet through heat radiation.

[0026] (3) The utility model provides a temperature display and a compressed air volume regulating valve, so that the operation and maintenance personnel can adjust the compressed air volume according to actual needs, thereby achieving the purpose of adjusting the internal ambient temperature of the cabinet. At the same time, the temperature controller can automatically adjust the compressed air volume based on the temperature detected by the temperature sensor, thereby combining automatic adjustment with manual adjustment, greatly reducing energy waste.

[0027] In addition, the utility model has a reliable design principle, a simple structure and a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 The present invention shows a schematic structural diagram of a power distribution cabinet located inside a steelmaking plant and having an automatic cooling function according to an embodiment of the present invention.

[0030] Figure 2 Shows Figure 1 A schematic structural diagram of a vortex tube cooler according to an embodiment is shown.

[0031] Figure 3 The electrical principle diagram of a power distribution cabinet with automatic cooling function located inside a steelmaking plant according to an embodiment of the utility model is shown.

[0032] 1-cabinet; 2-temperature display; 3-first muffler; 4-hot air outlet; 5-cold air outlet; 6-air inlet; 7-air compression system; 8-compressed air volume regulating valve; 9-vortex tube cooler; 10-cabinet cold air inlet; 11-temperature sensor; 12-microcontroller; 13-second muffler; 14-wireless communication module. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] Before further describing the embodiments of the present application in detail, the nouns and terms involved in the embodiments of the present application are explained. The nouns and terms involved in the embodiments of the present application are subject to the following interpretations.

[0035] It should be noted that the compressed air system can be installed outside the machine room and can be installed according to actual needs.

[0036] Embodiment 1:

[0037] like Figure 1 and Figure 2 As shown, this embodiment provides a distribution cabinet based inside a steelmaking plant and having an automatic cooling function, including: a vortex tube cooler 9 and a cabinet body 1. The outside of the cabinet body 1 is provided with an insulation layer (not shown) using a self-adhesive insulation material to cover the cabinet body, which can not only insulate the outside of the distribution cabinet, but also reduce the external high temperature from affecting the temperature inside the distribution cabinet through heat radiation.

[0038] The cabinet 1 covered with the insulation layer is also provided with a cabinet cold air inlet 10. The vortex cooler 9 includes an air inlet 6, a cold air outlet 5 and a hot air outlet 4. The cold air outlet 5 is provided with a first muffler 3, and the hot air outlet 4 is provided with a second muffler 13 to reduce exhaust noise.

[0039] The air inlet 6 of the vortex tube cooler 9 is communicated with the air compression system 7 to obtain compressed air compressed by the air compression system 7 and separate cold air from the obtained compressed air.

[0040] A compressed air quantity regulating valve 8 is provided on the air inlet 6 of the vortex tube cooler 9 to regulate the quantity of compressed air obtained. The compressed air quantity regulating valve 8 may be an electromagnetic control valve.

[0041] The cold air outlet 5 of the vortex tube cooler 9 is connected to the interior of the cabinet 1 through the cabinet cold air inlet 10 to send the separated cold air into the interior of the cabinet 1 to dissipate heat inside the cabinet 1 .

[0042] The cabinet 1 is also provided with a temperature sensor 11, a microcontroller 12, a wireless communication module 14, and a temperature display 2 provided on the cabinet 1 covered with a thermal insulation layer. The microcontroller 12 can be an STM32 series single-chip microcomputer. The temperature sensor is an MLX90614ESF-DCI high-precision infrared temperature sensor; the temperature display is a TD800 series large-screen temperature display, and the host computer includes a user handheld terminal and a desktop computer installed in the monitoring room.

[0043] The temperature sensor 11 is used to detect the real-time temperature in the cabinet 1. The temperature sensor 11 and the temperature display 2 are both connected to the microcontroller 12. The microcontroller 12 obtains the real-time temperature detected by the temperature sensor 11 and displays the real-time temperature through the temperature display 2, so that the operation and maintenance personnel can adjust the compressed air volume by manually adjusting the compressed air volume regulating valve 8 according to the temperature displayed on the temperature display 2, thereby achieving the purpose of regulating the temperature in the cabinet.

[0044] It should be noted that the coldness or hotness of the gas at the cold air outlet 5 is proportional to the flow rate of the compressed air.

[0045] The compressed air quantity regulating valve 8 is connected to the microcontroller 12. The microcontroller 12 adjusts the opening of the compressed air quantity regulating valve 8 based on the real-time temperature detected by the temperature sensor 11. For example, if the real-time temperature detected by the temperature sensor 11 obtained by the microcontroller 12 is higher than the preset temperature, the microcontroller 12 controls the compressed air quantity regulating valve 8 to increase the opening, that is, to increase the amount of compressed air obtained; if the real-time temperature detected by the temperature sensor 11 obtained by the microcontroller 12 is lower than the preset temperature, the compressed air quantity regulating valve 8 is controlled to reduce the opening, that is, to reduce the amount of compressed air obtained, thereby realizing automatic control of the temperature in the distribution cabinet without human intervention, greatly reducing energy waste.

[0046] The microcontroller 12 is also connected to the wireless communication module 14. The microcontroller 12 also sends the real-time temperature detected by the temperature sensor 11 to the host computer for display, and receives the control instruction sent by the host computer through the wireless communication module 14 to control the opening of the compressed air volume scheduling valve 8 based on the received instruction, wherein the control instruction includes increasing the opening of the compressed air volume scheduling valve 8 and reducing the opening of the compressed air volume scheduling valve 8. The operation and maintenance personnel can remotely monitor the real-time temperature in the cabinet in real time, and can send control instructions according to the displayed real-time temperature to control the opening of the compressed air volume scheduling valve. For example, when the temperature observed by the operation and maintenance personnel on the host computer is too high, the host computer can input a reduction in the opening of the compressed air volume scheduling valve, and send the input control instruction to the microcontroller through the wireless communication module, so that the microcontroller increases the opening of the compressed air volume scheduling valve based on the instruction received to increase the opening of the compressed air volume scheduling valve, that is, to increase the amount of compressed air, thereby realizing the combination of the automatic controller and the manual controller, and further improving the regulation and control of the temperature.

[0047] Among them, the host computer can be a computer in the monitoring room, a user handheld terminal and a portable terminal.

[0048] It should be noted that manual adjustment has a higher priority than control instructions sent by the host computer, and control instructions sent by the host computer have a higher priority than automatic adjustment.

[0049] The utility model utilizes a vortex tube cooler to separate cold air from the air compressed by the compressed air system to dissipate heat inside the cabinet, which helps to improve the cooling effect in a high temperature environment and helps to avoid dust pollution to the electrical components inside the distribution cabinet.

[0050] In addition, the outside of the cabinet is covered with an insulation layer, which not only insulates the distribution cabinet, but also helps to reduce the impact of external high temperature on the temperature inside the distribution cabinet through heat radiation.

[0051] When the utility model is used, the following steps are performed:

[0052] (1) Open the compressed air volume regulating valve to ensure that the compressed air enters the vortex tube cooler.

[0053] (2) The temperature sensor detects the temperature inside the power distribution cabinet in real time and transmits the temperature signal to the temperature controller and temperature display for display;

[0054] (3) The compressed air enters the vortex tube cooler through the compressed air volume regulating valve. The vortex tube cooler separates cold air from the compressed air. The cold air enters the distribution cabinet from the cold air outlet to cool the distribution cabinet. The high-temperature gas is discharged from the hot air outlet and enters the on-site environment. Among them, both the cold air outlet and the hot air outlet are equipped with silencers to reduce exhaust noise.

[0055] (4) The temperature sensor detects the real-time temperature inside the cabinet, and the temperature controller judges the temperature signal. When the actual temperature is higher than the preset value (which can be set according to the actual situation), the temperature controller outputs a signal to increase the opening of the compressed air volume regulating valve. If the actual temperature is lower than the preset value (which can be set according to the actual situation), the temperature controller outputs a signal to increase the opening of the compressed air volume regulating valve. At the same time, the operation and maintenance personnel can manually adjust the compressed air volume regulating valve according to the temperature displayed on the temperature display. In addition, the operation and maintenance personnel can also send control instructions through the host computer to adjust the compressed air volume regulating valve. It should be noted that the priority of manual adjustment is higher than the priority of the control instructions sent through the host computer, and the priority of the control instructions sent through the host computer takes precedence over the priority of automatic adjustment.

[0056] (5) The temperature in the distribution cabinet gradually drops due to the influence of the low-temperature gas at the cold end of the vortex tube, and a slightly positive pressure state is formed inside, which prevents external dust from entering, reduces the failure rate of electrical components, and extends the service life of the equipment.

[0057] (6) The external insulation layer of the cabinet effectively isolates the inside of the distribution cabinet from the external environment, reducing the impact of external high-temperature gas on the temperature inside the distribution cabinet through heat radiation.

[0058] Although the utility model is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the utility model is not limited thereto. Without departing from the spirit and essence of the utility model, ordinary technicians in the field can make various equivalent modifications or substitutions to the embodiments of the utility model, and these modifications or substitutions should be within the scope of the utility model / any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A power distribution cabinet with automatic cooling function located inside a steelmaking plant, characterized in that: include: Vortex tube coolers and cabinets; The cabinet is also provided with a cabinet cold air inlet; The vortex cooler includes an air inlet and a cold air outlet; The air inlet of the vortex tube cooler is connected to the air compression system to obtain compressed air compressed by the air compression system, and separate cold air from the obtained compressed air; A compressed air volume regulating valve is provided on the air inlet of the vortex tube cooler to adjust the amount of compressed air obtained; The cold air outlet of the vortex tube cooler is connected to the interior of the cabinet through the cold air inlet of the cabinet, so as to send the separated cold air into the interior of the cabinet to dissipate heat inside the cabinet.

2. The power distribution cabinet with automatic cooling function located inside a steelmaking plant according to claim 1 is characterized in that: The cabinet body is coated with a heat-insulating layer outside.

3. The power distribution cabinet with automatic cooling function located inside a steelmaking plant according to claim 1 is characterized in that: include: A microcontroller and a temperature sensor are arranged inside the cabinet, and a temperature display is arranged on the cabinet; The temperature sensor is used to detect the real-time temperature inside the cabinet; The temperature display and the temperature sensor are both connected to the microcontroller. The microcontroller obtains the real-time temperature detected by the temperature sensor and displays it through the temperature display.

4. The power distribution cabinet with automatic cooling function located inside a steelmaking plant according to claim 1 is characterized in that: A first muffler is arranged on the cold air outlet to reduce exhaust noise.

5. The power distribution cabinet with automatic cooling function located inside a steelmaking plant according to claim 1 is characterized in that: The vortex cooler also includes a hot gas outlet, and a second muffler is arranged on the hot gas outlet to reduce exhaust noise.

6. The power distribution cabinet with automatic cooling function located inside a steelmaking plant according to claim 3 is characterized in that: The microcontroller is also connected to the compression controller regulating valve to adjust the opening of the compressed air volume regulating valve according to the real-time temperature detected by the temperature sensor.

7. The power distribution cabinet with automatic cooling function located inside a steelmaking plant according to claim 3 is characterized in that: A wireless communication module is also provided inside the cabinet, which is connected to the microcontroller to send the real-time temperature detected by the temperature sensor to the host computer through the wireless communication module and receive the control instructions sent by the host computer to control the opening of the compressed air volume regulating valve.

8. The power distribution cabinet with automatic cooling function located inside a steelmaking plant according to claim 3 is characterized in that: The compressed air volume regulating valve adopts an electromagnetic control valve.

9. The power distribution cabinet with automatic cooling function located inside a steelmaking plant according to claim 3 is characterized in that: The microcontroller adopts STM32 series single chip microcomputer.

10. The power distribution cabinet with automatic cooling function located inside a steelmaking plant according to claim 3, characterized in that: The temperature sensor adopts MLX90614ESF-DCI high-precision infrared temperature sensor; The temperature display uses TD800 series large-screen temperature display; The host computer includes a user handheld terminal and a desktop computer installed in the monitoring room.

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