PLC control cabinet

Abstract

The utility model provides a PLC control cabinet, relates to PLC control cabinet technical field, including PLC control cabinet main part and set up heat exchange component on PLC control cabinet main part, heat exchange component includes outer heat exchange tube, inner heat exchange tube, liquid pump and first fan, outer heat exchange tube is set up in PLC control cabinet main part outside, inner heat exchange tube is set up in PLC control cabinet main part inside, liquid pump is set up in liquid pump and first fan. The outer heat exchange tube and the inner heat exchange tube are connected through the liquid pump, and the first fan is arranged on the outer side of the outer heat exchange tube. According to the utility model, the heat exchange components, namely the heat exchange tubes, are adopted for heat dissipation, air circulation with the external environment is not needed, and the PLC can be designed to be in a closed form and isolated from the outside, so that external air is prevented from entering the cabinet, equipment in the cabinet can be effectively prevented from being affected with damp, dust or particulate matters can be prevented from entering the cabinet, and the service life of the cabinet is prolonged. The cleanliness of the environment in the cabinet is ensured, and the operation reliability of the control cabinet is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PLC control cabinets, in particular to a PLC control cabinet. Background Art

[0002] PLC control cabinet refers to a programmable control cabinet. The PLC control cabinet has protection functions such as overload, short circuit, and phase loss protection. It has the advantages of compact structure, stable operation, and complete functions. It can be combined according to the actual control scale. It can realize single-cabinet automatic control and multiple cabinets can be formed into a distributed control system through industrial Ethernet or industrial field bus network.

[0003] PLC control cabinets are mainly used in industrial sites. However, the environment of industrial sites is often harsh, which puts forward requirements for the operational reliability of PLC control cabinets. PLC control cabinets in the prior art mostly use fans for direct heat dissipation. However, due to actual production needs, there may be problems with high air humidity or corrosive gases in industrial sites. When fans are used for direct heat dissipation, external humid gases or corrosive gases will enter the interior of the PLC control cabinet during the heat dissipation process, increasing the risk of internal components being corroded by moisture. The Chinese utility model patent with the authorization announcement number CN211929972U discloses a new type of PLC cabinet, which proposes to use fans for heat dissipation and cooperate with moisture absorption plates to remove moisture from the equipment. However, this method cannot completely avoid the possibility of corrosion due to moisture, which affects the operational reliability of the PLC control cabinet. In addition, the control buttons and operation screen of the PLC control cabinet are all set on the cabinet door. However, the actual situation at the industrial site is relatively complicated, and there may be a risk of accidental contact or accidental damage, which will also affect the operational reliability of the PLC control cabinet. Utility Model Content

[0004] In order to solve at least one problem in the background technology, the purpose of the utility model is to provide a PLC control cabinet to improve the operating reliability of the PLC control cabinet in an industrial field.

[0005] To achieve the above-mentioned purpose, the utility model provides a PLC control cabinet, including a PLC control cabinet body and a heat exchange component arranged on the PLC control cabinet body, the heat exchange component including an external heat exchange tube, an internal heat exchange tube, a liquid pump and a first fan, the external heat exchange tube is arranged outside the PLC control cabinet body, the internal heat exchange tube is arranged inside the PLC control cabinet body, the external heat exchange tube and the internal heat exchange tube are connected through the liquid pump, and the first fan is arranged on the outside of the external heat exchange tube.

[0006] Preferably, the output end of the liquid pump is connected to the input end of the outer heat exchange tube, the output end of the outer heat exchange tube is connected to the input end of the inner heat exchange tube, and the output end of the inner heat exchange tube is connected to the input end of the liquid pump.

[0007] Preferably, the heat exchange component further includes a fixing plate, and the heat exchange component is fixed to one side of the PLC control cabinet body through the fixing plate.

[0008] Preferably, a pump box is provided at the lower portion of the fixed plate, and the liquid pump is arranged in the pump box.

[0009] Preferably, there are multiple first fans, and the multiple first fans are longitudinally arranged on the outside of the external heat exchange tube and connected to the fixing plate through a support frame.

[0010] Preferably, a second fan is also provided inside the PLC control cabinet body.

[0011] Preferably, a protective component is further provided on the PLC control cabinet body, and the protective component is arranged above the cabinet door of the PLC control cabinet body, and the protective component includes a curtain for covering the cabinet door.

[0012] Preferably, the protective component also includes a winding box, a winding roller and a motor arranged inside the winding box, the winding roller is rotatably arranged inside the winding box, the curtain is wound around the winding roller, and the output end of the motor is connected to the winding roller.

[0013] Preferably, the output end of the motor is connected to a transmission belt, and the transmission belt is connected to the winding roller.

[0014] Preferably, slide rails are provided on both sides of the cabinet door, and the curtain is slidably arranged inside the slide rails.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model provides a PLC control cabinet, which uses a heat exchange component, i.e., a heat exchange tube, to dissipate heat. There is no need to achieve air circulation with the external environment. The PLC controller can be designed to be internally closed and isolated from the outside world to prevent external air from entering the cabinet, thereby avoiding the risk of equipment in the cabinet getting damp due to the entry of external air. At the same time, it can also prevent the entry of dust or particulate matter, thereby ensuring the cleanliness of the environment in the cabinet and improving the operating reliability of the control cabinet.

[0017] 2. The cabinet door and the buttons and / or operating screen on the cabinet door are shielded and protected by protective components. On the one hand, it can shield the dust or dirt that may exist in the industrial site, and on the other hand, it can reduce the risk of accidental contact or accidental damage, thereby improving the operating reliability of the control cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 is a structural schematic diagram of a heat exchange component;

[0020] Figure 3 It is a structural diagram of the protective component.

[0021] Among them, 1. PLC control cabinet body; 2. Cabinet door; 3. PLC controller; 4. Heat exchange component; 5. Protective component; 6. Fixed plate; 7. Pump box; 8. Internal heat exchange pipe; 9. External heat exchange pipe; 10. Support frame; 11. First fan; 12. Liquid pump; 13. Winding box; 14. Winding roller; 15. Slide; 16. Curtain; 17. Mounting frame; 18. Motor; 19. Transmission belt; 20. Slide rail; 21. Second fan. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1-Figure 2 As shown, a PLC control cabinet includes a PLC control cabinet body 1 and a heat exchange component 4 arranged on the PLC control cabinet body 1. The heat exchange component 4 includes an external heat exchange pipe 9, an internal heat exchange pipe 8, a liquid pump 12 and a first fan 11. The external heat exchange pipe 9 is arranged outside the PLC control cabinet body 1, and the internal heat exchange pipe 8 is arranged inside the PLC control cabinet body 1. The external heat exchange pipe 9 and the internal heat exchange pipe 8 are connected through the liquid pump 12. The first fan 11 is arranged on the outside of the external heat exchange pipe to promote heat exchange between the external heat exchange pipe 9 and the external air to ensure the heat exchange effect.

[0024] The output end of the liquid pump 12 is connected to the input end of the outer heat exchange tube 9, the output end of the outer heat exchange tube 9 is connected to the input end of the inner heat exchange tube 8, and the output end of the inner heat exchange tube 8 is connected to the input end of the liquid pump 12, thereby realizing the circulation of the liquid in the tube. In the actual operation process, the liquid pump 12 is operated to introduce the liquid inside the inner heat exchange tube 8 into the outer heat exchange tube 9, the first fan 11 is operated to dissipate heat from the outer heat exchange tube 9, the liquid inside the outer heat exchange tube 9 circulates to the inside of the inner heat exchange tube 8, and the inner heat exchange tube 8 replaces the heat inside the PLC control cabinet body 1 to complete the heat dissipation operation.

[0025] The heat exchange component 4 is fixed to one side of the PLC control cabinet body through a fixing plate 6. A pump box 7 is provided at the lower part of one side of the fixing plate 6, and a liquid pump 12 is provided in the pump box 7. The pump box 7 is located at the lower side of the inner heat exchange tube 8 and is located inside the PLC control cabinet body 1. A support frame 10 is provided on the other side of the fixing plate 6, and a plurality of first fans 11 are installed on the outer side of the outer heat exchange tube 9 through the support frame 10 to supply air to the outer heat exchange tube 9. The number of the first fans 11 can be set to multiple according to actual needs, and the multiple first fans 11 are arranged longitudinally on the outer side of the outer heat exchange tube to improve the heat dissipation effect.

[0026] A second fan 21 is also provided inside the PLC control cabinet body. The second fan 21 is provided inside the PLC control cabinet body and can be provided at a suitable position inside the cabinet according to actual needs, such as the side wall, bottom surface or top surface inside the PLC control cabinet body, or provided on the cabinet door. The number of second fans 21 can also be flexibly selected according to actual needs. Since the PLC control cabinet is designed to be closed and has no vents for gas exchange with the external environment, the second fan 21 is designed to promote air circulation inside the cabinet, so that the heat generated by electronic devices such as the PLC can be better absorbed by the internal heat exchange tube 8.

[0027] like Figure 3 As shown, a protective member 5 is also provided on the PLC control cabinet body 1, and the protective member 5 is arranged above the cabinet door 2 of the PLC control cabinet body 1. The protective member 5 uses a curtain 16 to shield the buttons and / or the operation screen on the cabinet door.

[0028] Specifically, the protective component includes a winding box 13, a winding roller 14 and a motor 18 arranged inside the winding box 13. The winding roller 14 is rotatably arranged inside the winding box 13, and the curtain 16 is wound around the winding roller 14, and is wound up under the action of the winding roller. The motor 18 is fixedly installed inside the winding box 13 through a mounting frame 17, and is connected to the winding roller 14 through a transmission belt 19. The front lower part of the winding box 13 has a sliding opening 15, and the sliding opening 15 can be designed as a rectangular opening, and one end of the curtain 16 extends out of the winding box 13 through the sliding opening. Slide rails 20 are arranged on both sides of the cabinet door 2, and one end of the curtain 16 extending out of the sliding opening 15 is slidably arranged on the inner side of the slide rails 20. When the PLC control cabinet is operating normally, the curtain 16 is pulled down, the curtain 16 slides out through the sliding opening 15, the winding roller 14 rotates inside the winding box 13, and the curtain 16 slides inside the slide rail 20 to protect the cabinet door 2 and the buttons, operation screen and other structures on the cabinet door 2; when the PLC controller 3 in the cabinet needs to be repaired, the motor 18 runs, drives the winding roller 14 to rotate through the transmission belt 19, and the winding roller 14 winds up the curtain 16, and the curtain 16 slides out of the slide rail 20 and is rolled up to the inside of the winding box 13 through the sliding opening 15, and the cabinet door 2 is opened to repair the PLC controller 3. The design of the winding roller and the curtain can cover the cabinet door, effectively preventing dust from entering the cabinet body or adhering to the surface of the cabinet door, and can also reduce the risk of accidental contact or accidental damage. At the same time, the design of the sliding opening allows the curtain to slide, which is convenient for cleaning and maintenance.

[0029] The working principle and use process of the utility model are as follows: first, before use, the PLC controller 3 is installed inside the PLC control cabinet body 1, the cabinet door 2 is rotated to close, the curtain 16 is pulled down, the curtain 16 slides out through the slide 15, the winding roller 14 rotates inside the winding box 13, and the curtain 16 slides inside the slide rail 20 to shield and protect the cabinet door 2; during normal operation, the liquid pump 12 runs to introduce the liquid inside the inner heat exchange tube 8 into the inside of the outer heat exchange tube 9, the first fan 11 runs to dissipate heat to the outer heat exchange tube 9, the liquid inside the outer heat exchange tube 9 circulates to the inside of the inner heat exchange tube 8, and the inner heat exchange tube 8 replaces the heat inside the PLC control cabinet body 1 to complete the heat dissipation operation; when the PLC controller 3 needs to be repaired, the motor 18 runs to drive the winding roller 14 to rotate through the transmission belt 19, the winding roller 14 winds up the curtain 16, the curtain 16 slides out of the slide rail 20 and is rolled up to the inside of the winding box 13 through the slide 15, and the cabinet door 2 is opened to repair the PLC controller 3.

[0030] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A PLC control cabinet, characterized in that: It comprises a PLC control cabinet body and a heat exchange component arranged on the PLC control cabinet body, wherein the heat exchange component comprises an external heat exchange pipe, an internal heat exchange pipe, a liquid pump and a first fan, wherein the external heat exchange pipe is arranged outside the PLC control cabinet body, the internal heat exchange pipe is arranged inside the PLC control cabinet body, the external heat exchange pipe and the internal heat exchange pipe are connected through the liquid pump, and the first fan is arranged outside the external heat exchange pipe; A second fan is also provided inside the PLC control cabinet body, and the second fan promotes air circulation in the cabinet, and the heat generated by the electronic components is absorbed by the internal heat exchange tubes.

2. A PLC control cabinet as claimed in claim 1, characterized in that: The output end of the liquid pump is connected to the input end of the outer heat exchange tube, the output end of the outer heat exchange tube is connected to the input end of the inner heat exchange tube, and the output end of the inner heat exchange tube is connected to the input end of the liquid pump.

3. A PLC control cabinet as claimed in claim 1, characterized in that: The heat exchange component also includes a fixing plate, and the heat exchange component is fixed to one side of the PLC control cabinet body through the fixing plate.

4. A PLC control cabinet as claimed in claim 3, characterized in that: A pump box is arranged at the lower part of the fixing plate, and the liquid pump is arranged in the pump box.

5. A PLC control cabinet as claimed in claim 3, characterized in that: There are multiple first fans, and the multiple first fans are longitudinally arranged on the outside of the external heat exchange tube and connected to the fixing plate through a support frame.

6. A PLC control cabinet as claimed in claim 1, characterized in that: The PLC control cabinet body is also provided with a protective component, which is arranged above the cabinet door of the PLC control cabinet body. The protective component includes a curtain for covering the cabinet door.

7. A PLC control cabinet as claimed in claim 6, characterized in that: The protective component also includes a winding box, a winding roller and a motor arranged inside the winding box. The winding roller is rotatably arranged in the winding box, the curtain is wound around the winding roller, and the output end of the motor is connected to the winding roller.

8. A PLC control cabinet as claimed in claim 7, characterized in that: The output end of the motor is connected with a transmission belt, and the transmission belt is connected with the winding roller.

9. A PLC control cabinet as claimed in claim 6, characterized in that: Slide rails are arranged on both sides of the cabinet door, and the curtain is slidably arranged inside the slide rails.

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