Intelligent cooling system of electric control cabinet and control method thereof

Abstract

The present invention provides an intelligent cooling system of an electric control cabinet and a control method thereof, which solves the problem of water vapor condensation caused by vortex tube heat dissipation, and comprises an electric control cabinet body, a vortex tube is installed on the electric control cabinet body, a solenoid valve is arranged at the nozzle of the vortex tube, a temperature sensor and a PLC control module connected to the temperature sensor and the solenoid valve are arranged inside the electric control cabinet body, a main cabinet is installed inside the electric control cabinet body, a cooling cavity is left between the main cabinet body and the inner wall of the electric control cabinet body, and the cooling cavity is connected to the cold end pipe of the vortex tube, a guide pipe is connected to the bottom of the cooling cavity, a heat conduction mechanism is arranged between the hot end pipe of the vortex tube and the bottom of the cooling cavity, and an exhaust mechanism is connected to the cooling cavity. The present invention has the advantages of good heat dissipation effect and stable structure.

Description

Technical Field

[0001] The invention belongs to the technical field of electric control cabinets, and particularly relates to an intelligent cooling system of an electric control cabinet and a control method thereof. Background Art

[0002] In the current glass production process, the temperature in the factory is very high due to the use of kilns and high-power equipment. Various electrical and electronic components including PLC, DCS, and inverters will cause malfunctions and shutdowns when the temperature is too high, thereby reducing production efficiency. What's more, there will be major safety hazards. If conventional air conditioners are used to dissipate heat from electrical components, there is a risk of Freon leakage. As we all know, compressed air is a very common power source in the glass production industry and is safe, reliable and easy to obtain. Therefore, vortex tubes can be used to use compressed air to cool the electric control cabinet. However, in actual use, when using vortex tubes for cooling, water vapor is prone to condensation inside the cabinet, posing a short-circuit threat to electrical components.

[0003] In order to solve the deficiencies in the prior art, people have conducted long-term explorations and proposed various solutions. For example, a Chinese patent document discloses an electric control cabinet cooling device [201921569927.1], which includes a vortex tube and an electric control cabinet. The vortex tube is installed at the top of the electric control cabinet. The vortex tube is a conductive hollow tube, one end of which is the hot end of the vortex tube, and is provided with a vortex tube hot air outlet. A needle regulating valve is provided in the vortex tube hot air outlet, and the other end is the cold end of the vortex tube, and is provided with a vortex tube cold air outlet and an electric control cabinet hot air pipeline. The electric control cabinet hot air inlet of the electric control cabinet hot air pipeline is located at the end face of the cold end of the vortex tube, and the electric control cabinet hot air outlet of the electric control cabinet hot air pipeline is located on the tube body surface of the cold end of the vortex tube. A vortex chamber is provided in the vortex tube, and a vortex tube compressed air inlet is provided on the vortex chamber. The vortex tube compressed air inlet is connected to the compressed air inlet through an electromagnetic valve, an oil outlet filter, a dehumidification filter, and a ball valve.

[0004] The above solution solves the problem of heat dissipation and cooling of the electric control cabinet to a certain extent, but the solution still has many shortcomings, such as the use of vortex tube cooling leading to condensation of water vapor and easy to cause short circuit of electrical components. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent cooling system for an electric control cabinet which has a reasonable design and can effectively avoid condensation of water vapor in view of the above problems.

[0006] The purpose of the present invention is to solve the above problems and provide a control method for an intelligent cooling system of an electric control cabinet with reasonable design and good heat dissipation effect.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an intelligent cooling system for an electric control cabinet, comprising an electric control cabinet body, an eddy current tube installed on the electric control cabinet body, an electromagnetic valve arranged at the nozzle of the eddy current tube, a temperature sensor and a PLC control module connected to the temperature sensor and the electromagnetic valve arranged inside the electric control cabinet body, a main cabinet installed inside the electric control cabinet body, a cooling cavity is reserved between the main cabinet body and the inner wall of the electric control cabinet body, and the cooling cavity is connected to the cold end pipe of the eddy current tube, a guide pipe is connected to the bottom of the cooling cavity, a heat conduction mechanism is arranged between the hot end pipe of the eddy current tube and the bottom of the cooling cavity, and an exhaust mechanism is connected to the cooling cavity. The main cabinet is isolated from the main control cabinet body, and the cooling cavity indirectly dissipates heat inside the main cabinet. At the same time, the heat conduction mechanism uses the heat discharged by the eddy current tube to ensure that the temperature at the bottom of the cooling cavity is higher than the upper temperature, so as to avoid the freezing of condensed water droplets at the bottom of the cooling cavity, and ensure that the guide pipe normally discharges water vapor, so as to avoid water vapor deposition invading the inside of the main cabinet and causing short circuit of components.

[0008] In the above-mentioned intelligent cooling system of an electric control cabinet, a heat dissipation mechanism is arranged between the outer side of the main cabinet and the inner wall of the electric control cabinet body, and a heat insulation mechanism is arranged between the bottom of the main cabinet and the electric control cabinet body. The heat dissipation mechanism conducts the heat inside the main cabinet to the cooling cavity, and part of the heat is circulated out of the electric control cabinet body by the guide pipe, and the other part is directly dissipated by the side wall of the electric control cabinet body, which has a good heat dissipation effect.

[0009] In the above-mentioned intelligent cooling system of an electric control cabinet, the heat dissipation mechanism includes heat dissipation ribs distributed on the outer side of the main cabinet and extending in the vertical direction. The heat dissipation ribs are integrally formed with the main cabinet, and heat dissipation fins are provided at the ends of the heat dissipation ribs and are pressed against the inner wall of the main body of the electric control cabinet. In addition to achieving heat conduction, the heat dissipation ribs and heat dissipation fins also support the main body of the electric control cabinet and the main cabinet, and maintain the stability of the overall structure when the cooling cavity is filled with high-pressure gas.

[0010] In the above-mentioned intelligent cooling system of an electric control cabinet, the heat insulation mechanism includes a heat insulation layer arranged at the upper end of the bottom of the electric control cabinet body, the upper end of the heat insulation layer is in contact with the bottom of the main cabinet body and has a heat insulation edge that covers the lower end of the main cabinet body, a liquid guide groove is arranged between the heat insulation edge and the lower end of the inner wall of the electric control cabinet body, and the guide pipe is connected to the liquid guide groove. The heat insulation layer lifts the main cabinet body upward so that the liquid guide groove is lower than the main cabinet body to prevent condensed water droplets from contacting the bottom of the main cabinet body.

[0011] In the above-mentioned intelligent cooling system of an electric control cabinet, the heat transfer mechanism includes a three-way regulating valve connected to the hot end pipe of the vortex tube, and the three-way regulating valve is connected to the heat transfer cavity arranged between the lower end of the liquid conduction groove and the bottom of the electric control cabinet body through the heat conduction pipe. The three-way regulating valve is controlled by the PLC control module to control the on-off and flow rate, thereby limiting the heat inside the heat conduction cavity and keeping the surface temperature of the liquid conduction groove constant.

[0012] In the above-mentioned intelligent cooling system of an electric control cabinet, the exhaust mechanism includes a driving fan installed at the upper end of the electric control cabinet body, the output end of the driving fan is connected to a driving fan extending into the cooling chamber, the driving fan is connected to the PLC control module, and an exhaust port opposite to the driving fan is opened at the upper end of the electric control cabinet body, and the exhaust port is closed by an exhaust cover plate covering the upper end of the electric control cabinet body, and a gap is left between the exhaust cover plate and the electric control cabinet body. The exhaust mechanism relieves the pressure of the cooling chamber. Since the cooling chamber is always in a positive pressure state due to the high-pressure gas filled in it, the excess gas is discharged from the exhaust port to prevent impurities from invading the electric control cabinet body from the exhaust port.

[0013] In the above-mentioned intelligent cooling system of an electric control cabinet, the back of the electric control cabinet body is attached to the main cabinet body, and a cabinet door is hinged on the front of the electric control cabinet body to close the opening of the main cabinet body, and a sealing mechanism is provided at the edge of the cabinet door. The cooling cavity is arranged on both sides of the main cabinet body, and the cabinet door and the back of the main cabinet body directly conduct heat to the outside.

[0014] In the above-mentioned intelligent cooling system of an electric control cabinet, the sealing mechanism includes a sealing strip arranged at the edge of the cabinet door, a sealing step surface opposite to the edge of the main cabinet body is arranged between the sealing strip and the cabinet door, a sealing groove for inserting the sealing strip is arranged along the circumferential direction of the opening of the main cabinet body, and a silicone layer is arranged at the bottom of the sealing groove. The cabinet door ensures the sealing of the main cabinet body through the sealing mechanism, and after closing, the lock provides a certain pressing force to the silicone layer on the sealing strip.

[0015] In the above-mentioned intelligent cooling system of an electric control cabinet, a wiring slot is provided at the back of the electric control cabinet body, and a plurality of wiring holes connected to the main cabinet body are provided at the bottom of the wiring slot. The wiring slot is used for wiring at the back of the electric control cabinet body, and its wiring holes sequentially penetrate the electric control cabinet body and the main cabinet body.

[0016] In the above-mentioned intelligent cooling system of an electric control cabinet, a plurality of mounting plates are arranged on the back of the electric control cabinet body, the mounting plates extend outwards and are provided with reinforcing ribs between the mounting plates and the side walls of the electric control cabinet body, and strip-shaped mounting holes are opened on the mounting plates. The mounting plates are used for hanging installation of the electric control cabinet body, and the reinforcing ribs are provided to improve the structural strength of the connection.

[0017] In the above-mentioned intelligent cooling system of an electric control cabinet, a circulation drive mechanism is provided at the upper end of the main cabinet, the circulation drive mechanism is connected to a cooling mechanism extending from the upper end to the lower end of the main cabinet, an air duct assembly is provided inside the main cabinet, and the cooling mechanism is installed inside the air duct assembly. The circulation drive mechanism cooperates with the air duct assembly and the cooling mechanism to further dissipate heat inside the main cabinet, ensuring that the heat on the surface of each circuit component is quickly dissipated.

[0018] In the above-mentioned intelligent cooling system of an electric control cabinet, the circulation drive mechanism includes an air intake pipe installed at the upper end of the main cabinet, a first regulating valve is arranged between the cold end pipe of the vortex tube and the cooling cavity, the air intake pipe is connected to the cold end pipe of the vortex tube and a second regulating valve is arranged between them, the air intake pipe is connected to a circulation pipeline, the circulation pipeline is coiled and attached to the upper end of the main cabinet, the circulation pipeline is connected to a diverter valve, the diverter valve is connected in parallel with a number of refrigeration copper pipes, and the refrigeration copper pipes are connected to the cooling mechanism. The circulation drive mechanism prevents cold air from directly entering the main cabinet, and the cooling mechanism ensures uniform heat dissipation.

[0019] In the above-mentioned intelligent cooling system of an electric control cabinet, the air duct assembly includes an air duct plate vertically installed inside the main cabinet, gaps are left between the air duct plates, a sliding adjustment mechanism is arranged between adjacent air duct plates, and an air duct cylinder is installed on the air duct plate, and the air duct cylinder has air duct openings opposite to the surface of the air duct plate, and the air duct openings are long and equidistantly arranged along the extension direction of the air duct cylinder. The air duct assembly realizes air circulation inside the main cabinet and guides heat to be dissipated into the cooling mechanism.

[0020] In the above-mentioned intelligent cooling system of an electric control cabinet, the sliding adjustment mechanism includes a horizontally arranged sliding base plate, which is arranged at the upper and lower parts of the main cabinet body and has sliding cavities between the upper and lower ends of the main cabinet body, and the opposite sides of the sliding base plate are respectively provided with a plurality of sliding grooves extending in the horizontal and / or longitudinal directions, and the upper and lower ends of the air duct plate are respectively provided with sliding blocks slidably connected to the sliding grooves, and the sliding blocks are disc-shaped and threadedly connected with locking bolts pressed and fastened to the bottom of the sliding grooves. The installation position of the air duct plate can be adjusted as needed to obtain the best convection effect and flexibly adjust the installation position of each component.

[0021] In the above-mentioned intelligent cooling system of an electric control cabinet, the cooling mechanism includes cooling fins arranged on the cooling copper tube and arranged at equal intervals, the cooling copper tube and its cooling fins are installed in the air duct cylinder, the other end of the cooling copper tube is connected to the cooling cavity, and a cooling fan is installed at the port of the air duct cylinder. The cooling fins further increase the surface area of ​​the cooling copper tube to ensure its heat exchange efficiency.

[0022] A control method for an intelligent cooling system of an electric control cabinet comprises the following steps:

[0023] S1: The solenoid valve is opened, and high-pressure gas is introduced into the vortex tube. The cold air from the cold end tube of the vortex tube is introduced into the cooling chamber to dissipate heat from the side wall of the main cabinet. The first regulating valve adjusts the amount of cold air introduced into the cooling chamber.

[0024] S2: The three-way regulating valve is opened to guide the hot gas from the hot end of the vortex tube into the heat transfer cavity, and the temperature of the liquid guide groove at the bottom of the cooling cavity is adjusted. The three-way regulating valve adjusts the amount of hot gas entering the heat transfer cavity.

[0025] S3: The cold air from the cold end of the vortex tube is introduced into the air inlet pipe, the amount of cold air introduced is adjusted by the second regulating valve, and the circulating pipeline and the diverter valve evenly distribute the cold air to each refrigeration copper tube;

[0026] S4: The cooling fan starts to drive the air circulation inside the air duct cylinder, and the cooling fins on the surface of the cooling copper tube exchange heat with the surface of the air duct plate;

[0027] S5: The temperature sensor senses the temperature inside the cooling chamber and the main cabinet, and the PLC control module provides feedback to maintain a constant temperature inside the main cabinet. The PLC control module coordinates the opening and closing of each valve body and the flow inside the pipeline, and cooperates with the temperature sensor to obtain the best heat dissipation efficiency. At the same time, it is convenient to connect the cooling system to the outside to realize remote monitoring of the electric control cabinet.

[0028] Compared with the existing technology, the advantages of the present invention are: the cooling chamber is isolated from the main cabinet to achieve indirect heat dissipation, preventing water vapor from invading the main cabinet; the hot air discharged by the hot end tube of the vortex tube prevents the freezing of water droplets condensed at the bottom of the cooling chamber, thereby ensuring the stability of the circulation flow of the guide tube; the exhaust mechanism discharges the excess air in the cooling chamber to ensure its constant pressure and prevent external impurities from invading the main body of the electric control cabinet; a cooling mechanism is arranged inside the main cabinet to directly dissipate the heat on the surface of the circuit components, thereby ensuring the stable operation of the electric control cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the electric control cabinet body of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the main cabinet of the present invention;

[0032] Figure 4 It is a structural cross-sectional view of the present invention;

[0033] Figure 5 It is a structural schematic diagram of another viewing angle of the present invention;

[0034] Figure 6 is an internal schematic diagram of the present invention;

[0035] Figure 7 It is a structural schematic diagram of the air duct cylinder of the present invention;

[0036] Figure 8 It is a structural schematic diagram of the refrigeration copper tube of the present invention;

[0037] Fig. 9 It is a structural schematic diagram of the air duct plate of the present invention;

[0038] Fig.10is a structural cross-sectional view of the liquid-conducting groove of the present invention;

[0039] Fig.11 is a structural cross-sectional view of the sealing mechanism of the present invention;

[0040] Fig.12 It is a structural principle diagram of the PLC control module of the present invention;

[0041] In the figure, the electric control cabinet body 1, the wiring slot 11, the wiring hole 12, the mounting plate 13, the reinforcing rib 14, the mounting hole 15, the vortex tube 2, the solenoid valve 21, the temperature sensor 22, the PLC control module 23, the first regulating valve 24, the second regulating valve 25, the main cabinet 3, the air intake pipe 31, the circulation pipeline 32, the diverter valve 33, the refrigeration copper pipe 34, the air duct plate 35, the air duct cylinder 36, the air duct port 37, the sliding base plate 38, the sliding groove 381, the sliding block 382, ​​and the locking bolt 383 , sliding cavity 39, cooling cavity 4, guide pipe 41, cooling fins 42, cooling fan 43, heat conduction mechanism 5, three-way regulating valve 51, heat conduction pipe 52, heat conduction cavity 53, exhaust mechanism 6, driving fan 61, driving fan 62, exhaust port 63, exhaust cover 64, heat dissipation mechanism 7, heat dissipation ribs 71, heat sink 72, thermal insulation mechanism 8, thermal insulation layer 81, thermal insulation edge 82, liquid guide groove 83, cabinet door 9, sealing strip 91, sealing step surface 92, sealing groove 93, silicone layer 94. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1 As shown, an intelligent cooling system for an electric control cabinet includes an electric control cabinet body 1, the electric control cabinet body 1 is equipped with a vortex tube 2, wherein the vortex tube 2 includes a nozzle and a hot end tube and a cold end tube that are interconnected, a high-pressure gas supply pipeline on a glass production line is connected to the nozzle of the vortex tube 2, a solenoid valve 21 is arranged at the nozzle of the vortex tube 2, a temperature sensor 22 and a PLC control module 23 connected to the temperature sensor 22 and the solenoid valve 21 are arranged inside the electric control cabinet body 1, and the specific structural principle of the PLC control module 23 is as follows Fig.12 As shown, a main cabinet 3 is installed inside the electric control cabinet body 1 , and a temperature sensor 22 and a PLC control module 23 implement feedback regulation to maintain a constant temperature inside the electric control cabinet body 1 .

[0044] from Figure 4It can be seen that a cooling cavity 4 is left between the main cabinet 3 and the inner wall of the electric control cabinet body 1, and the cooling cavity 4 is connected to the cold end pipe of the vortex tube 2. The cold air discharged from the cold end pipe is conducted to the cooling cavity 4. A guide pipe 41 is connected to the bottom of the cooling cavity 4. The main cabinet 3 exchanges heat with the air inside the cooling cavity 4 and is discharged by the guide pipe 41. A heat conduction mechanism 5 is arranged between the hot end pipe of the vortex tube 2 and the bottom of the cooling cavity 4. A part of the hot air from the hot end pipe is directly discharged, and the other part is conducted to the bottom of the cooling cavity 4 by the heat conduction mechanism 5. The cooling cavity 4 is connected to an exhaust mechanism 6, which is usually used to discharge excess air in the cooling cavity 4, maintain a constant pressure inside the cooling cavity 4, and discharge water vapor.

[0045] Specifically, a heat dissipation mechanism 7 is provided between the outer side of the main cabinet 3 and the inner wall of the electric control cabinet body 1, and a heat insulation mechanism 8 is provided between the bottom of the main cabinet 3 and the electric control cabinet body 1. The heat dissipation mechanism 7 and the heat insulation mechanism 8 cooperate to ensure that heat is conducted from the side wall of the main cabinet 3 to the cooling cavity 4.

[0046] Specifically, the heat dissipation mechanism 7 includes heat dissipation ribs 71 distributed on the outer side of the main cabinet 3 and extending in the vertical direction. Figure 3-4 As shown, the heat dissipation ribs 71 are arranged equidistantly on both sides of the main cabinet 3, and the heat dissipation ribs 71 are integrally formed with the main cabinet 3. The ends of the heat dissipation ribs 71 are provided with heat dissipation fins 72 that fit tightly against the inner wall of the electric control cabinet body 1. The cross-sections of the heat dissipation ribs 71 and the heat dissipation fins 72 are T-shaped. Usually, the main cabinet 3 and its heat dissipation ribs 71 are made of aluminum alloy, which has good thermal conductivity and structural strength. The relative positions of the heat dissipation ribs 71 and the heat dissipation fins 72 and the main cabinet 3 and the electric control cabinet body 1 are as shown in FIG. Figure 4 shown.

[0047] Furthermore, the heat insulation mechanism 8 includes a heat insulation layer 81 arranged at the upper end of the bottom of the electric control cabinet body 1, the upper end of the heat insulation layer 81 is in contact with the bottom of the main cabinet body 3 and has a heat insulation edge 82 that wraps around the lower end of the main cabinet body 3, a liquid guide groove 83 is arranged between the heat insulation edge 82 and the lower end of the inner wall of the electric control cabinet body 1, and the flow guide pipe 41 is connected to the liquid guide groove 83. The heat insulation layer 81 is made of glass fiber to keep the bottom of the main cabinet body 3 separated from the bottom of the electric control cabinet body 1. The liquid guide groove 83 usually adopts a copper structure, and its cross-section is V-shaped and its two ends are respectively connected to the electric control cabinet body 1 and the main cabinet body 3. The specific structure of the liquid guide groove 83 is as follows: Fig.10 As shown, when the water vapor condenses and drops onto the liquid guiding groove 83 , the vortex tube 2 continuously inputs cold air, causing the water droplets to freeze and block the guiding tube 41 , resulting in the accumulation of water vapor in the cooling chamber 4 .

[0048] The connection structure between the three-way regulating valve 51, the vortex tube 2 and the solenoid valve 21 is as follows: Figure 1As shown, the three-way regulating valve 51 connected to the hot end pipe of the vortex tube 2 in the heat conduction mechanism 5 adjusts the internal passage under the action of the PLC control module 23. The three-way regulating valve 51 is connected to the heat conduction cavity 53 arranged between the lower end of the liquid conduction groove 83 and the bottom of the electric control cabinet body 1 through the heat conduction pipe 52. The heat conduction pipe 52 conducts hot air to the heat conduction cavity 53, and the temperature of the heat conduction cavity 53 rises rapidly to achieve thawing, ensuring that the flow guide pipe 41 is normally connected.

[0049] from Figure 2 It can be seen that the exhaust mechanism 6 includes a driving fan 61 installed at the upper end of the electric control cabinet body 1, and the output end of the driving fan 61 is connected to a driving fan 62 extending into the cooling chamber 4. The driving fan 61 is connected to the PLC control module 23. The upper end of the electric control cabinet body 1 is provided with an exhaust port 63 opposite to the driving fan 62. The exhaust port 63 is closed by an exhaust cover 64 covering the upper end of the electric control cabinet body 1, and a gap is left between the exhaust cover 64 and the electric control cabinet body 1. The power of the driving fan 62 is adjusted by the PLC control module 23. When the internal temperature of the main cabinet 3 is within the normal range, the solenoid valve 21 cuts off the vortex tube 2 and the driving fan 61 works normally, and the driving fan 62 guides the air in the cooling chamber 4 to continuously dissipate heat. Since the exhaust port 63 is arranged at the upper end of the electric control cabinet body 1, the driving fan 62 works continuously to prevent external dust and other impurities from invading the cooling chamber 4 through the exhaust port 63.

[0050] At the same time, the back of the electric control cabinet body 1 is bonded to the main cabinet body 3 or directly formed by welding. The front of the electric control cabinet body 1 is hinged with a cabinet door 9 that closes the opening of the main cabinet body 3. The cabinet door 9 is provided with a sealing mechanism and a lock at the edge to completely close the main cabinet body 3.

[0051] like Fig.11 As shown, the sealing mechanism includes a sealing strip 91 arranged at the edge of the cabinet door 9, a sealing step surface 92 opposite to the edge of the main cabinet 3 is arranged between the sealing strip 91 and the cabinet door 9, and a sealing groove 93 for inserting the sealing strip 91 is arranged along the circumferential direction of the opening of the main cabinet 3, and a silicone layer 94 is arranged at the bottom of the sealing groove 93. The sealing strip 91 is adapted to the sealing groove 93, and the depth of the sealing groove 93 is greater than the height of the sealing strip 91. When the cabinet door 9 is closed, a pressing force is applied to the silicone layer 94, and the silicone layer 94 is squeezed and deformed to fill the gap between the sealing groove 93 and the sealing strip 91.

[0052] like Figure 5As shown, a wiring slot 11 is provided on the back of the electric control cabinet body 1, and a plurality of wiring holes 12 are provided at the bottom of the wiring slot 11, which are connected to the main cabinet body 3. The components inside the main cabinet body 3 are wired and passed through the wiring holes 12 to be guided into the wiring slot 11, and the wiring slot 11 is closed by selecting a corresponding cover plate as needed. A plurality of mounting plates 13 are provided on the back of the electric control cabinet body 1, and the mounting plates 13 extend outward and are provided with reinforcing ribs 14 between the mounting plates 13 and the side walls of the electric control cabinet body 1, and strip-shaped mounting holes 15 are provided on the mounting plates 13. The mounting plates 13 are arranged in pairs on both sides of the electric control cabinet body 1, and are connected and fixed to the wall through screws passing through the mounting holes 15.

[0053] In addition to the indirect heat dissipation of the side wall of the main cabinet 3 by the cooling cavity 4, a circulation drive mechanism is provided at the upper end of the main cabinet 3, and the circulation drive mechanism is connected to a cooling mechanism extending from the upper end to the lower end of the main cabinet 3. The circulation drive mechanism provides circulation driving force and cold source for the cooling mechanism. An air duct assembly is provided inside the main cabinet 3 to assist the cooling mechanism in guiding the internal cavity of the main cabinet 3 to dissipate heat uniformly. After the cooling mechanism is installed in the air duct assembly, it has an isolation effect on the cooling mechanism to prevent the cooling mechanism from directly contacting the internal circuit components of the main cabinet 3. The pipe connection in the circulation drive mechanism is as follows: Figure 1 as well as Figure 4 shown.

[0054] The circulation drive mechanism includes an air intake pipe 31 installed at the upper end of the main cabinet 3, a first regulating valve 24 is arranged between the cold end pipe of the vortex tube 2 and the cooling chamber 4, and the first regulating valve 24 adjusts the air intake amount inside the cooling chamber 4, the air intake pipe 31 is connected to the cold end pipe of the vortex tube 2, and a second regulating valve 25 is arranged between them, and the vortex tube 2 provides cold air, and the second regulating valve 25 controls the air intake amount of the air intake pipe 31. The air intake pipe 31 is connected to a circulation pipeline 32, which is coiled and attached to the upper end of the main cabinet 3, and the circulation pipeline 32 is connected to a diverter valve 33, and the diverter valve 33 is connected in parallel with a number of refrigeration copper tubes 34, which are installed at both ends of the refrigeration copper tube 34, and the high-pressure gas inside the circulation pipeline 32 is evenly distributed to each refrigeration copper tube 34 for heat exchange and then merged and exported. The refrigeration copper tube 34 is connected to the cooling mechanism, and the cooling mechanism is used to further improve the heat exchange efficiency.

[0055] The cooling mechanism is assembled with the main cabinet 3 and the electric control cabinet body 1 as shown in the figure. Figure 6 As shown, the cooling mechanism includes cooling fins 42, which are equidistantly arranged on the cooling copper tube 34. The cooling copper tube 34 and its cooling fins 42 extend along the internal passage direction of the air duct cylinder 36. The other end of the cooling copper tube 34 is connected to the cooling cavity 4 or the outside of the electric control cabinet body 1. A cooling fan 43 is installed at the port of the air duct cylinder 36 and the cooling fan 43 is connected to the PLC control module 23.

[0056] like Figure 7-9As shown, the air duct assembly includes an air duct plate 35 vertically installed inside the main cabinet 3, with gaps between the air duct plates 35, and a sliding adjustment mechanism is provided between adjacent air duct plates 35. The air duct plate 35 is installed with an air duct cylinder 36, and the air duct cylinder 36 has an air duct opening 37 opposite to the surface of the air duct plate 35, and the air duct opening 37 is in a long strip shape and is arranged equidistantly along the extension direction of the air duct cylinder 36. The air duct plate 35 is provided for fitting and assembling circuit components, and the air duct plate 35 is arranged on both sides of the components and the air duct opening 37 is opposite to the circuit components such as relays and circuit switches. The air duct plate 35 and its air duct cylinder 36 are made of insulating and heat-resistant materials, and the air duct cylinder 36 is in an L-shaped or T-shaped structure.

[0057] Further, from Figure 3 as well as Figure 6 It can be seen that the sliding adjustment mechanism includes a horizontally arranged sliding base plate 38, which is arranged at the upper and lower parts of the main cabinet 3 and has a sliding cavity 39 between the upper and lower ends of the main cabinet 3, and a plurality of sliding grooves 381 extending in the horizontal and / or vertical directions are respectively opened on the opposite side of the sliding base plate 38, and the upper and lower ends of the air duct plate 35 are respectively provided with sliding blocks 382 slidably connected to the sliding groove 381, and the sliding blocks 382 are in the shape of a disc and are threadedly connected with a locking bolt 383 pressed and fastened to the bottom of the sliding groove 381. The sliding blocks 382 slide in the sliding groove 381, thereby adjusting the horizontal or vertical orientation of the sliding groove 381. When the sliding blocks 382 at both ends of the sliding base plate 38 are respectively installed in the sliding grooves 381 arranged horizontally and vertically, the sliding base plate 38 is arranged tilted accordingly, and the number and installation position of the sliding base plate 38 are adjusted according to the wiring needs of the circuit components. The sliding base plate 38 is adjusted to a parallel or inclined state as needed, and a through hole in the shape of a long strip is opened at the bottom of the sliding groove 381 for the refrigeration copper tube 34 to pass through.

[0058] A control method for an intelligent cooling system of an electric control cabinet comprises the following steps:

[0059] S1: the solenoid valve 21 is opened, and high-pressure gas is introduced into the vortex tube 2. The cold air led out of the cold end tube of the vortex tube 2 is introduced into the cooling chamber 4 to dissipate heat from the side wall of the main cabinet 3. The first regulating valve 24 adjusts the amount of cold air introduced into the cooling chamber 4.

[0060] S2: The three-way regulating valve 51 is opened to guide the hot gas from the hot end of the vortex tube 2 into the heat transfer cavity 53, and the temperature of the liquid guide groove 83 at the bottom of the cooling cavity 4 is adjusted. The three-way regulating valve 51 adjusts the amount of hot gas introduced into the heat transfer cavity 53;

[0061] S3: The cold air from the cold end of the vortex tube 2 is introduced into the air inlet pipe 31, and the amount of cold air introduced is adjusted by the second regulating valve 25, and evenly distributed to each refrigeration copper tube 34 by the circulation pipeline 32 and the diverter valve 33;

[0062] S4: The cooling fan 43 is started to drive the air inside the air duct cylinder 36 to circulate, and the cooling fins 42 on the surface of the cooling copper tube 34 exchange heat with the surface of the air duct plate 35;

[0063] S5: The temperature sensor 22 senses the temperature inside the cooling chamber 4 and the main cabinet 3 , and the PLC control module 23 performs feedback adjustment to maintain the temperature inside the main cabinet 3 constant.

[0064] Embodiment 1

[0065] When the first regulating valve 24 remains in the open state, the second regulating valve 25 is closed, the three-way regulating valve 51 keeps the heat transfer chamber 53 connected with the vortex tube 2, and the driving fan 61 in the exhaust mechanism 6 starts to maintain the internal and external pressure balance of the cooling chamber 4. Only heat exchange is performed between the cooling chamber 4 and the main cabinet 3 to maintain the constant temperature of the main cabinet 3.

[0066] Embodiment 2

[0067] The structure, principle and implementation steps of this embodiment are similar to those of the first embodiment, except that the second regulating valve 25 of this embodiment remains in an open state, the circuit elements inside the main cabinet 3 further exchange heat with the refrigeration copper tube 34 in the air duct barrel 36, and the cooling fan 43 realizes air circulation, so that the internal temperature of the main cabinet 3 continues to drop until it is within the temperature threshold range preset by the PLC control module 23.

[0068] Embodiment 3

[0069] The first regulating valve 24 and the second regulating valve 25 as well as the second regulating valve 25 are all closed, leaving only the exhaust mechanism 6 to work normally. The cooling system as a whole is in standby mode and is at the lowest power consumption. When the electric control cabinet stops working, the exhaust mechanism 6 discharges the internal residual heat.

[0070] To sum up, the principle of this embodiment is that the cooling cavity 4 between the electric control cabinet body 1 and the main cabinet body 3 indirectly dissipates heat to the side wall of the main cabinet body 3, the vortex tube 2 passes cold air into the cooling cavity 4 to realize heat exchange, and the water vapor is condensed and discharged by the guide tube 41, and part of the heat of the vortex tube 2 is conducted to the bottom of the cooling cavity 4 to prevent the guide tube 41 from freezing and affecting the normal air flow.

[0071] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0072] Although this article uses more electric control cabinet body 1, wiring slot 11, wiring hole 12, mounting plate 13, reinforcing rib 14, mounting hole 15, vortex tube 2, solenoid valve 21, temperature sensor 22, PLC control module 23, first regulating valve 24, second regulating valve 25, main cabinet 3, air intake pipe 31, circulation pipeline 32, diverter valve 33, refrigeration copper pipe 34, air duct plate 35, air duct cylinder 36, air duct opening 37, sliding base plate 38, sliding groove 381, sliding block 382, ​​locking bolt 383, sliding cavity 3 9, cooling cavity 4, flow guide pipe 41, cooling fin 42, cooling fan 43, heat transfer mechanism 5, three-way regulating valve 51, heat transfer pipe 52, heat transfer cavity 53, exhaust mechanism 6, driving fan 61, driving fan 62, exhaust port 63, exhaust cover 64, heat dissipation mechanism 7, heat dissipation rib 71, heat sink 72, heat insulation mechanism 8, heat insulation layer 81, heat insulation edge 82, liquid guide groove 83, cabinet door 9, sealing strip 91, sealing step surface 92, sealing groove 93, silicone layer 94 and other terms, but the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. An intelligent cooling system for an electric control cabinet, comprising an electric control cabinet body (1), the electric control cabinet body (1) being equipped with a vortex tube (2), a solenoid valve (21) being arranged at the nozzle of the vortex tube (2), a temperature sensor (22) and a PLC control module (23) connected to the temperature sensor (22) and the solenoid valve (21) being arranged inside the electric control cabinet body (1), characterized in that: The electric control cabinet body (1) is internally installed with a main cabinet (3), a cooling chamber (4) is reserved between the main cabinet (3) and the inner wall of the electric control cabinet body (1), and the cooling chamber (4) is connected to the cold end pipe of the vortex tube (2), the bottom of the cooling chamber (4) is connected to a guide pipe (41), a heat conduction mechanism (5) is arranged between the hot end pipe of the vortex tube (2) and the bottom of the cooling chamber (4), and the cooling chamber (4) is connected to an exhaust mechanism (6); a circulation drive mechanism is arranged at the upper end of the main cabinet (3), and the circulation drive mechanism is connected to a cooling mechanism extending from the upper end to the lower end of the main cabinet (3), an air duct assembly is arranged inside the main cabinet (3), and the cooling mechanism is installed In the air duct assembly; the circulation drive mechanism comprises an air intake pipe (31) installed at the upper end of the main cabinet (3); a first regulating valve (24) is arranged between the cold end pipe of the vortex tube (2) and the cooling chamber (4); the air intake pipe (31) is connected to the cold end pipe of the vortex tube (2) and a second regulating valve (25) is arranged between them; the air intake pipe (31) is connected to a circulation pipeline (32); the circulation pipeline (32) is coiled and attached to the upper end of the main cabinet (3); the circulation pipeline (32) is connected to a diverter valve (33); the diverter valve (33) is connected in parallel to a plurality of refrigeration copper tubes (34); the refrigeration copper tubes (34) are connected to the cooling mechanism; the air duct assembly comprises a vertically arranged An air duct plate (35) is installed inside the main cabinet (3), gaps are left between the air duct plates (35), a sliding adjustment mechanism is provided between adjacent air duct plates (35), the air duct plate (35) is installed with an air duct cylinder (36), the air duct cylinder (36) is provided with an air duct opening (37) opposite to the surface of the air duct plate (35), the air duct opening (37) is in the shape of an elongated strip and is arranged equidistantly along the extension direction of the air duct cylinder (36); the sliding adjustment mechanism comprises a horizontally arranged sliding base plate (38), the sliding base plate (38) is arranged at the upper and lower parts inside the main cabinet (3) and a sliding cavity (39) is left between the upper and lower ends of the main cabinet (3), the sliding base plate (38) is opposite to the A plurality of sliding grooves (381) extending in the transverse and / or longitudinal directions are respectively provided on one side of the air duct plate (35); sliding blocks (382) slidably connected to the sliding grooves (381) are respectively provided at the upper and lower ends of the air duct plate (35); the sliding blocks (382) are disc-shaped and threadedly connected to locking bolts (383) pressed and fastened to the bottom of the sliding grooves (381); the cooling mechanism comprises cooling fins (42) arranged on the cooling copper tube (34) and arranged at equal intervals; the cooling copper tube (34) and its cooling fins (42) are installed in the air duct cylinder (36); the other end of the cooling copper tube (34) is connected to the cooling cavity (4); and a cooling fan (43) is installed at the port of the air duct cylinder (36).

2. The intelligent cooling system for an electric control cabinet according to claim 1, characterized in that: A heat dissipation mechanism (7) is provided between the outer side of the main cabinet (3) and the inner wall of the electric control cabinet body (1), and a heat insulation mechanism (8) is provided between the bottom of the main cabinet (3) and the electric control cabinet body (1); the heat dissipation mechanism (7) comprises heat dissipation ribs (71) distributed on the outer side of the main cabinet (3) in a circumferential direction and extending in a vertical direction, the heat dissipation ribs (71) and the main cabinet (3) are integrally formed, and heat dissipation fins (72) are provided at the ends of the heat dissipation ribs (71) and are pressed against the inner wall of the electric control cabinet body (1).

3. The intelligent cooling system for an electric control cabinet according to claim 2, characterized in that: The heat insulation mechanism (8) comprises a heat insulation layer (81) arranged at the upper end of the bottom of the electric control cabinet body (1); the upper end of the heat insulation layer (81) is in contact with the bottom of the main cabinet body (3) and has a heat insulation edge (82) covering the lower end of the main cabinet body (3); a liquid guide groove (83) is arranged between the heat insulation edge (82) and the lower end of the inner wall of the electric control cabinet body (1); the flow guide pipe (41) is connected to the liquid guide groove (83); the heat conduction mechanism (5) comprises a three-way regulating valve (51) connected to the hot end pipe of the vortex tube (2); the three-way regulating valve (51) is connected to a heat conduction cavity (53) arranged between the lower end of the liquid guide groove (83) and the bottom of the electric control cabinet body (1) through the heat conduction pipe (52).

4. The intelligent cooling system for an electric control cabinet according to claim 3 is characterized in that: The exhaust mechanism (6) comprises a driving fan (61) installed at the upper end of the electric control cabinet body (1); the output end of the driving fan (61) is connected to a driving fan (62) extending into the cooling chamber (4); the driving fan (61) is connected to a PLC control module (23); the upper end of the electric control cabinet body (1) is provided with an exhaust port (63) opposite to the driving fan (62); the exhaust port (63) is closed by an exhaust cover plate (64) covering the upper end of the electric control cabinet body (1); and a gap is left between the exhaust cover plate (64) and the electric control cabinet body (1).

5. The intelligent cooling system for an electric control cabinet according to claim 1, characterized in that: The back of the electric control cabinet body (1) is fitted with the main cabinet body (3); a cabinet door (9) is hingedly connected to the front of the electric control cabinet body (1) to close the opening of the main cabinet body (3); a sealing mechanism is arranged at the edge of the cabinet door (9); the sealing mechanism comprises a sealing strip (91) arranged at the edge of the cabinet door (9); a sealing step surface (92) opposite to the edge of the main cabinet body (3) is arranged between the sealing strip (91) and the cabinet door (9); a sealing groove (93) for inserting the sealing strip (91) is arranged along the circumferential direction of the opening of the main cabinet body (3); a silicone layer (94) is arranged at the bottom of the sealing groove (93).

6. The intelligent cooling system for an electric control cabinet according to claim 1, characterized in that: The electric control cabinet body (1) has a wiring slot (11) on the back, and a plurality of wiring holes (12) connected to the main cabinet body (3) are formed at the bottom of the wiring slot (11); a plurality of mounting plates (13) are provided on the back of the electric control cabinet body (1), and the mounting plates (13) extend outward and have reinforcing ribs (14) between them and the side walls of the electric control cabinet body (1), and strip-shaped mounting holes (15) are formed on the mounting plates (13).

7. A control method for an intelligent cooling system of an electric control cabinet according to any one of claims 1 to 6, characterized in that: The steps include: S1: the solenoid valve (21) is opened, and high-pressure gas is introduced into the vortex tube (2). Cold air discharged from the cold end tube of the vortex tube (2) is introduced into the cooling chamber (4) to dissipate heat from the side wall of the main cabinet (3). The first regulating valve (24) regulates the amount of cold air introduced into the cooling chamber (4); S2: the three-way regulating valve (51) is opened to guide the hot gas from the hot end of the vortex tube (2) into the heat transfer cavity (53), to adjust the temperature of the liquid guide groove (83) at the bottom of the cooling cavity (4), and the three-way regulating valve (51) adjusts the amount of hot gas introduced into the heat transfer cavity (53); S3: The cold air discharged from the cold end pipe of the vortex tube (2) is introduced into the air inlet pipe (31), the amount of the cold air introduced is adjusted by the second regulating valve (25), and the cold air is evenly distributed to each refrigeration copper tube (34) by the circulation pipeline (32) and the diverter valve (33); S4: The cooling fan (43) is started to drive the air inside the air duct cylinder (36) to circulate, and the cooling fins (42) on the surface of the refrigeration copper tube (34) exchange heat with the surface of the air duct plate (35); S5: The temperature sensor (22) senses the internal temperature of the cooling chamber (4) and the main cabinet (3), and the PLC control module (23) performs feedback adjustment to maintain the internal temperature of the main cabinet (3) constant.

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