A redundant dcs system power automatic switching device

Abstract

The application discloses a kind of redundant DCS system power automatic switching device, it is related to the power supply guarantee technical field of industrial automation control system, including power automatic switching mechanism, the inside of the power automatic switching mechanism is provided with adjustable frame bracing mechanism, the top of the power automatic switching mechanism is provided with ventilation heat dissipation mechanism.The application is connected with folding frame bracing piece by the inside of first connecting frame body, the rotating shaft is arranged in the connection of folding frame bracing piece, the rotating shaft of one end of folding frame bracing piece is slidably connected with the inside of sliding slot respectively, which is conducive to guarantee the effect of folding, ensure stability, one end of folding frame bracing piece is connected with second connecting frame body, second connecting frame body is also provided with sliding slot, provide convenient adjustment while guiding, convex strip is arranged on the outside of second connecting frame body, so that second connecting frame body is slidably connected with sliding guide rail, provide the function of quick sliding limit, facilitate disassembly during overhaul.

Description

Technical Field

[0001] This invention relates to the field of power supply protection technology for industrial automation control systems, specifically to an automatic power switching device for redundant DCS systems. Background Technology

[0002] Distributed control systems (DCS) are widely used in process industries such as petroleum, chemical, power, and metallurgy, and their stable operation is crucial for production safety. The core control units, I / O modules, and communication networks of a DCS system all require a continuous, stable, and reliable power supply. Any brief power outage can lead to control logic chaos, production process interruption, or even equipment damage, causing significant economic losses and safety accidents. Currently, in DCS systems, the most critical aspect of seamless redundancy switching is the seamless switching of the controller. For controllers running IEC logic instructions, as long as the master and slave machine's operation instructions (programs), operation data, and operation cycle are consistent, the operation results will be consistent, thus achieving seamless switching between master and slave controllers. Operation data can be divided into three types from a data flow perspective: input data (channel, communication), intermediate variable data, and output data. Input data includes periodic input data and diagnostic data from the channels. Both master and slave controllers acquire input data from their respective data acquisition master stations. The master controller needs to perform periodic redundancy on the periodic input data to ensure input consistency.

[0003] In the prior art, such as the patent application number "A Portable Automatic Power Switching Device," which includes a housing with wheels at the bottom and a pull rod on the side wall, a base inside the housing with a dual-power automatic transfer switch mounted on the base, two power wire inlets on the outer wall of the housing, and one power wire outlet, all electrically connected to the dual-power automatic transfer switch. This invention uses a portable, box-type design, eliminating the need for wall mounting or cabinet installation; it achieves automatic power switching, eliminates the need for a physical switch installation, and allows for repeated relocation and reuse after a single assembly. This saves on manpower costs for power supply maintenance, shortens backup power switching time, reduces the impact of power outages, and improves the automation level of power supply maintenance.

[0004] Existing automatic power switching devices are basically installed inside a cabinet for protection. Due to the limited space inside the cabinet, it is inconvenient to carry out maintenance work after the power switching device is installed. As a result, when the power switching device fails, a lot of time needs to be spent disassembling it, which makes it impossible to perform timely inspection and maintenance, resulting in equipment damage. In order to address the above problems, a redundant DCS system automatic power switching device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic power switching device for a redundant DCS system, in order to solve the problem mentioned in the background art that, due to the limited space inside the enclosure, the power switching device is inconvenient to maintain after installation, and thus requires a lot of time to disassemble when the power switching device malfunctions, making it impossible to perform timely inspection and maintenance, resulting in equipment damage.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic power switching device for a redundant DCS system, comprising an automatic power switching mechanism, an adjustable support mechanism internally provided with the automatic power switching mechanism, a ventilation and heat dissipation mechanism at the top of the automatic power switching mechanism, and a protective housing containing an automatic power switching device; the adjustable support mechanism includes a fixed plate, a first connecting frame symmetrically mounted on one side of the fixed plate, a folding support member movably mounted on the inner side of the first connecting frame, a second connecting frame movably connected to one end of the folding support member, a mounting frame connected to one end of the second connecting frame, a sliding guide rail symmetrically fixedly mounted on one side of the mounting frame, the second connecting frame slidably connected to the inner side of the sliding guide rail, a docking member connected to the bottom end of the sliding guide rail, a limiting pin symmetrically fixedly mounted on one side of the docking member, a limiting member symmetrically fixedly mounted on one side of the sliding guide rail, and the limiting pins inserted into the inner side of the limiting members.

[0007] Preferably, the ventilation and heat dissipation mechanism includes a ventilation hood, which is disposed on the top of the protective housing. High-speed fans are symmetrically installed on the inner side of the ventilation hood, and the output end of the high-speed fans is provided with ventilation fan blades.

[0008] Preferably, a filter screen is installed on the top of the protective housing, and the filter screen is located below the high-speed fan.

[0009] Preferably, the first connecting frame has symmetrical sliding slots through both sides, and the connecting parts of the folding frame support are all provided with rotating shafts.

[0010] Preferably, a protective door is movably installed on the front of the protective enclosure, the protective door has a transparent viewing window, a power button is provided on the front of the protective door, and a lock is installed on one side of the front of the protective door.

[0011] Preferably, a plurality of ventilation grilles are evenly distributed through both sides of the protective box, and filter plates are installed on both sides of the inner wall of the protective box, with the filter plates disposed on the sides of the ventilation grilles.

[0012] Preferably, a fixed support frame is symmetrically fixedly installed on the back of the protective box, and a number of high-strength connecting bolts are evenly distributed on the fixed support frame. All the high-strength connecting bolts are connected to the protective box, and mounting holes are symmetrically opened at both ends of the fixed support frame.

[0013] Preferably, a conduit for wiring is fixedly installed at the bottom of the protective enclosure, and a dustproof sealing gasket is provided on the inner side of the conduit.

[0014] Preferably, the front of the automatic power switching device is provided with several display screens, and several adjustment buttons are evenly distributed on the front of the automatic power switching device, with the adjustment buttons correspondingly distributed below the display screens.

[0015] Preferably, the bottom of the automatic power switching device is fixedly installed with a power connector, and the bottom of the power connector has a plurality of power ports, the inside of which is connected to a power wire.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In this invention, a fixing plate is fixedly installed on the inner wall of the protective box. A first connecting frame is symmetrically distributed on the fixing plate, and sliding slots are symmetrically opened on both sides of the first connecting frame. A folding frame support is connected to the inner side of the first connecting frame, and a rotating shaft is provided at the connection point of the folding frame support. The rotating shaft at one end of the folding frame support is slidably connected to the inner side of the sliding slot, facilitating sliding guidance during telescopic adjustment, ensuring the folding effect and stability. A second connecting frame is connected to one end of the folding frame support, and the second connecting frame also has a sliding slot, providing convenient adjustment and guidance. A protruding strip is provided on the outer side of the second connecting frame to facilitate sliding connection between the second connecting frame and the sliding guide rail. The sliding guide rail is symmetrically fixedly installed on the side of the mounting frame, providing a quick sliding limit function and facilitating disassembly during maintenance, thus effectively improving ease of use. A docking component is installed at the bottom of the sliding guide rail, and symmetrical limit pins are set on the docking component. After the second connecting frame slides inside the sliding guide rail, it docks with the bottom of the sliding guide rail through the docking component, which also wraps around the bottom outer side of the second connecting frame. This facilitates the insertion of the limit pins into the limit components on the side of the sliding guide rail, achieving a quick docking and limiting function, and further improving the stability of use. Disassembly only requires removing the docking component for removal and maintenance, effectively improving the convenience of use.

[0018] 2. In this invention, a ventilation hood is installed on the top of the protective enclosure, and several ventilation slots are evenly distributed throughout the hood to provide space for ventilation and heat dissipation. High-speed fans are symmetrically arranged inside the ventilation hood, driving the fan blades to rotate at high speed, thus facilitating the exhaust of internal heat and effectively improving the heat dissipation and ventilation effect. Furthermore, the principle of hot air rising, combined with the fans, rapidly extracts heat, reducing heat accumulation and ensuring heat dissipation performance. A filter screen provides filtration, helping to reduce dust and impurities entering the protective enclosure and preventing damage to internal equipment.

[0019] 3. In this invention, the protective door covers the front of the protective enclosure, providing effective protection. A transparent viewing window on the door facilitates external observation of the enclosure's interior, significantly improving ease of observation. A power button on the door allows for convenient external control of the power supply, enhancing operational convenience. A lock secures the door to the enclosure. Symmetrically distributed ventilation grilles on both sides of the enclosure work in conjunction with the ventilation and heat dissipation mechanism. An internal filter plate further reduces dust and impurities from entering the enclosure, ensuring optimal performance. A symmetrically fixed support frame is installed on the back of the enclosure, secured with multiple high-strength bolts. Mounting holes at both ends of the support frame facilitate installation. A conduit at the bottom of the enclosure, with a dustproof sealing gasket on the inside, provides some protection, reducing dust ingress and allowing for easy wire threading. The power connector is located at the bottom of the automatic power switch and has a power inlet, facilitating connection to a power cord for effective power control. The front of the automatic power switch features a display screen and adjustment buttons for easy control and status monitoring. Attached Figure Description

[0020] Figure 1 This is a perspective view of an automatic power switching device for a redundant DCS system according to the present invention.

[0021] Figure 2 This is a schematic diagram of another angle of the automatic power switching device for a redundant DCS system according to the present invention.

[0022] Figure 3 This is a schematic diagram of the internal structure of a redundant DCS system power automatic switching device according to the present invention.

[0023] Figure 4 This is a schematic diagram of the internal exploded structure of a redundant DCS system power automatic switching device according to the present invention.

[0024] Figure 5 For the present invention Figure 4 A magnified structural diagram at point A in the diagram.

[0025] Figure 6 This is a partially exploded structural diagram of an automatic power switching device for a redundant DCS system according to the present invention.

[0026] Figure 7 For the present invention Figure 6 A magnified structural diagram at point B in the diagram.

[0027] In the picture:

[0028] 1. Automatic power switching mechanism; 101. Protective enclosure; 102. Protective enclosure door; 103. Transparent viewing window; 104. Power button; 105. Enclosure door lock; 106. Ventilation grille; 107. Fixing support; 108. High-strength connecting bolt; 109. Mounting hole; 110. Wiring conduit; 111. Dustproof sealing gasket; 112. Automatic power switching device; 113. Display screen; 114. Adjustment button; 115. Power connector; 116. Power connection port; 17. Connecting wire; 118. Filter plate; 2. Adjustable support mechanism; 201. Fixing plate; 202. First connecting frame; 203. Sliding slot; 204. Folding support; 205. Second connecting frame; 206. Mounting frame; 207. Sliding guide rail; 208. Limiting component; 209. Connecting component; 210. Limiting pin; 3. Ventilation and heat dissipation mechanism; 301. Ventilation hood; 302. Ventilation fan blades; 303. High-speed fan; 304. Filter screen. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: As Figures 1-7 As shown, the present invention provides a technical solution: an automatic power switching device for a redundant DCS system, including an automatic power switching mechanism 1, an adjustable support mechanism 2 is provided inside the automatic power switching mechanism 1, a ventilation and heat dissipation mechanism 3 is provided on the top of the automatic power switching mechanism 1, the automatic power switching mechanism 1 includes a protective box 101, and an automatic power switching device 112 is provided inside the protective box 101.

[0031] The adjustable support mechanism 2 includes a fixed plate 201. A first connecting frame 202 is symmetrically installed on one side of the fixed plate 201. A folding frame support 204 is movably installed on the inner side of the first connecting frame 202. A second connecting frame 205 is movably connected to one end of the folding frame support 204. A mounting frame 206 is connected to one end of the second connecting frame 205. A sliding guide rail 207 is symmetrically fixed on one side of the mounting frame 206. The second connecting frame 205 is slidably connected to the inner side of the sliding guide rail 207. A docking piece 209 is connected to the bottom end of the sliding guide rail 207. A limiting pin 210 is symmetrically fixed on one side of the docking piece 209. A limiting piece 208 is symmetrically fixed on one side of the sliding guide rail 207. The limiting pin 210 is inserted into the inner side of the limiting piece 208. Sliding slots 203 are symmetrically opened through both sides of the first connecting frame 202. A rotating shaft is provided at each connection point on the folding frame support 204.

[0032] In this embodiment, a protective housing 101 is located on the outside of an automatic power switching device 112, which performs automatic power switching. A fixing plate 201 is fixedly installed on the inner wall of the protective housing 101. A first connecting frame 202 is symmetrically distributed on the fixing plate 201, and sliding slots 203 are symmetrically opened on both sides of the first connecting frame 202. A folding frame support 204 is connected to the inner side of the first connecting frame 202. A rotating shaft is provided at the connection point of the folding frame support 204, with one end of the rotating shaft slidingly connected to the inner side of the sliding slot 203. This facilitates sliding guidance during telescopic adjustment, ensuring the folding effect and stability. A second connecting frame 205 is connected to one end of the folding frame support 204, and the second connecting frame 205 also has a sliding slot 203, providing convenient adjustment and guidance. A protruding strip is provided on the outer side of the second connecting frame 205 to facilitate sliding connection between the second connecting frame 205 and the sliding guide rail 207. The sliding guide rail 207 is symmetrically fixedly installed on the side of the mounting frame 206, which facilitates quick sliding and limiting, and also facilitates disassembly during maintenance, thus effectively improving ease of use. A docking part 209 is provided at the bottom of the sliding guide rail 207, and limit pins 210 are symmetrically provided on the docking part 209. After the second connecting frame 205 slides on the inner side of the sliding guide rail 207, it docks with the bottom of the sliding guide rail 207 through the docking part 209 and wraps around the bottom outer side of the second connecting frame 205. This facilitates the insertion and connection of the limit pin 210 into the limit part 208 on the side of the sliding guide rail 207, achieving a quick docking and limiting function, further improving the stability of use. Disassembly only requires removing the docking part 209 for removal and maintenance, effectively improving ease of use.

[0033] Example 2: Figure 4 As shown, the ventilation and heat dissipation mechanism 3 includes a ventilation hood 301, which is located on the top of the protective housing 101. High-speed fans 303 are symmetrically installed on the inner side of the ventilation hood 301. The output end of the high-speed fans 303 is provided with ventilation fan blades 302. A filter screen 304 is installed on the top of the protective housing 101 and is located below the high-speed fans 303.

[0034] In this embodiment, a ventilation hood 301 is installed on the top of the protective housing 101, and several ventilation slots are evenly distributed throughout the ventilation hood 301 to provide space for ventilation and heat dissipation. High-speed fans 303 are symmetrically arranged inside the ventilation hood 301, driving the fan blades 302 to rotate at high speed, thus facilitating the exhaust of internal heat and effectively improving the heat dissipation and ventilation effect. Furthermore, the principle of hot air rising, combined with the fans, rapidly extracts heat, reducing heat accumulation and ensuring heat dissipation performance. The filter screen 304 provides filtration, helping to reduce dust and impurities entering the protective housing 101 and preventing damage to internal equipment.

[0035] Example 3: As Figures 1-6 As shown, a protective door 102 is movably installed on the front of the protective enclosure 101. A transparent viewing window 103 is provided on the protective door 102. A power button 104 is located on the front of the protective door 102. A door lock 105 is installed on one side of the front of the protective door 102. Several ventilation grilles 106 are evenly distributed throughout both sides of the protective enclosure 101. Filter plates 118 are installed on both sides of the inner wall of the protective enclosure 101, and are located on the sides of the ventilation grilles 106. A fixing bracket 107 is symmetrically fixedly installed on the back of the protective enclosure 101. Several high-strength connecting bolts 108 are evenly distributed on the fixing bracket 107, and each high-strength connecting bolt 108 is connected to... On the protective enclosure 101, mounting holes 109 are symmetrically provided through both ends of the fixed support 107. A conduit 110 is fixedly installed at the bottom of the protective enclosure 101. A dustproof sealing gasket 111 is provided on the inner side of the conduit 110. Several displays 113 are provided on the front of the automatic power switching device 112. Several adjustment buttons 114 are evenly distributed on the front of the automatic power switching device 112. The adjustment buttons 114 are correspondingly distributed below the displays 113. A power socket 115 is fixedly installed at the bottom of the automatic power switching device 112. Several power ports 116 are provided at the bottom of the power socket 115. A power wire 117 is connected to the inner side of the power port 116.

[0036] In this embodiment, the protective door 102 covers the front of the protective enclosure 101, providing effective protection. A transparent viewing window 103 installed on the protective door 102 facilitates external observation of the interior of the enclosure 101, significantly improving ease of observation. A power button 104 on the protective door 102 allows for convenient external control of the power supply, enhancing operational convenience. The enclosure door 102 can be locked to the protective enclosure 101 using a door lock 105. Ventilation grilles 106 are symmetrically distributed on both sides of the protective enclosure 101, working in conjunction with the ventilation and heat dissipation mechanism 3 to provide ventilation and heat dissipation. Simultaneously, a filter plate 118 inside the protective enclosure 101 provides filtration, reducing dust and impurities from entering the enclosure and ensuring optimal performance. The protective enclosure 101 is symmetrically fixed to the back of the enclosure 101 via fixed support brackets 107. Multiple high-strength connecting bolts 108 are distributed on the fixed support brackets 107 and fixed to the enclosure 101. Mounting holes 109 are provided at both ends of the fixed support brackets 107 for easy installation. Wiring conduits 110 are distributed at the bottom of the enclosure 101, with dustproof sealing gaskets 111 on the inside to provide some coverage, reducing dust ingress and facilitating the threading of the connecting wires 117. A power connector 115 is located at the bottom of the automatic power switching device 112 and has a power connection port 116, facilitating connection to the connecting wires 117 for effective power control. The front of the automatic power switching device 112 features a display screen 113 and adjustment buttons 114 for easy control and display of operating status.

[0037] In this invention, when the redundant DCS system power automatic switching device is in use, the protective door 102 can first cover the front of the protective enclosure 101, providing effective protection. A transparent viewing window 103 installed on the protective door 102 facilitates external observation of the interior of the protective enclosure 101, effectively improving the ease of observation. A power button 104 located on the protective door 102 facilitates external control of the power supply, improving operational convenience. The protective door 102 can be locked onto the protective enclosure 101 using a door lock 105. Ventilation grilles 106 are symmetrically distributed on both sides of the protective enclosure 101, working in conjunction with the ventilation and heat dissipation mechanism 3 to provide ventilation and heat dissipation. Simultaneously, a filter plate 118 is installed inside the protective enclosure 101 to provide filtration, reducing the entry of dust and impurities into the enclosure 101, ensuring effective operation. The automatic power switch 112 is symmetrically fixed to the back of the protective enclosure 101 via fixed support brackets 107. Multiple high-strength connecting bolts 108 are distributed on the fixed support brackets 107 and fixed to the protective enclosure 101. Mounting holes 109 are provided at both ends of the fixed support brackets 107 for easy installation. A conduit 110 is located at the bottom of the protective enclosure 101, with a dustproof sealing gasket 111 on the inside to provide some coverage, reducing dust ingress and facilitating the threading of the connecting wire 117. A power connector 115 is located at the bottom of the automatic power switch 112 and has a power connection port 116 for easy connection to the connecting wire 117 for effective power control. A display screen 113 and adjustment buttons 114 are located on the front of the automatic power switch 112 for easy control and display of operating status. The protective enclosure 101 is located outside the automatic power switch 112, which performs automatic power switching. The first connecting frame 202 is fixedly installed on the inner wall of the protective box 101 by a fixing plate 201. The first connecting frame 202 is symmetrically distributed on the fixing plate 201, and sliding slots 203 are symmetrically opened through both sides of the first connecting frame 202. A folding frame support 204 is connected to the inner side of the first connecting frame 202. A rotating shaft is provided at the connection point of the folding frame support 204. The rotating shaft at one end of the folding frame support 204 is slidably connected to the inner side of the sliding slot 203, which facilitates sliding guidance during telescopic adjustment, helps to ensure the folding effect, and ensures stability. A second connecting frame 205 is connected to one end of the folding frame support 204. The second connecting frame 205 is also provided with a sliding slot 203, which also provides convenient adjustment and guidance.A protruding strip is provided on the outer side of the second connecting frame 205 to facilitate sliding connection between the second connecting frame 205 and the sliding guide rail 207. The sliding guide rail 207 is symmetrically fixedly installed on the side of the mounting frame 206, which facilitates quick sliding and limiting, and also facilitates disassembly during maintenance, thus effectively improving ease of use. A docking part 209 is provided at the bottom of the sliding guide rail 207, and limit pins 210 are symmetrically provided on the docking part 209. After the second connecting frame 205 slides on the inner side of the sliding guide rail 207, it docks with the bottom of the sliding guide rail 207 through the docking part 209 and wraps around the bottom outer side of the second connecting frame 205. This facilitates the insertion and connection of the limit pin 210 into the limit part 208 on the side of the sliding guide rail 207, achieving a quick docking and limiting function, further improving the stability of use. Disassembly only requires removing the docking part 209 for removal and maintenance, effectively improving ease of use. A ventilation hood 301 is installed on the top of the protective enclosure 101, and several ventilation slots are evenly distributed throughout the hood 301 to provide space for ventilation and heat dissipation. High-speed fans 303 are symmetrically arranged inside the ventilation hood 301, driving the fan blades 302 to rotate at high speed, thus facilitating the exhaust of internal heat and effectively improving the heat dissipation and ventilation effect. Utilizing the principle of hot air rising, the fans quickly extract heat, reducing heat accumulation and ensuring heat dissipation performance. A filter 304 provides filtration, helping to reduce dust and impurities entering the protective enclosure 101 and preventing damage to internal equipment.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A redundant DCS system power automatic switching device, comprising a power automatic switching mechanism (1), characterized in that: The power automatic switching mechanism (1) is provided with an adjustable support mechanism (2) inside, and a ventilation and heat dissipation mechanism (3) is provided on the top of the power automatic switching mechanism (1). The power automatic switching mechanism (1) includes a protective box (101), and a power automatic switching device (112) is provided inside the protective box (101). The adjustable support mechanism (2) includes a fixed plate (201). A first connecting frame (202) is symmetrically installed on one side of the fixed plate (201). A folding support member (204) is movably installed on the inner side of the first connecting frame (202). A second connecting frame (205) is movably connected to one end of the folding support member (204). A mounting frame (206) is connected to one end of the second connecting frame (205). One side of the mounting frame (206) is symmetrically fixed. A sliding guide rail (207) is installed, and the second connecting frame (205) is slidably connected to the inner side of the sliding guide rail (207). A docking part (209) is connected to the bottom end of the sliding guide rail (207). A limiting pin (210) is symmetrically fixedly installed on one side of the docking part (209), and a limiting part (208) is symmetrically fixedly installed on one side of the sliding guide rail (207). The limiting pin (210) is inserted into the inner side of the limiting part (208). The first connecting frame (202) has symmetrical sliding slots (203) through both sides, and the folding frame support (204) has a rotating shaft at each connection point; The first connecting frame (202) is fixedly installed on the inner wall of the protective box (101) by a fixing plate (201). The first connecting frame (202) is symmetrically distributed on the fixing plate (201), and sliding slots (203) are symmetrically opened on both sides of the first connecting frame (202). A folding frame support (204) is connected to the inner side of the first connecting frame (202). A rotating shaft is provided at the connection point of the folding frame support (204). The rotating shaft at one end of the folding frame support (204) is slidably connected to the inner side of the sliding slot (203), which facilitates sliding guidance during telescopic adjustment. A second connecting frame (205) is connected to one end of the folding frame support (204). The second connecting frame (205) is also provided with a sliding slot (203), which also provides convenient adjustment and guidance. A protruding strip is provided on the outer side of the second connecting frame (205) to facilitate the sliding connection between the second connecting frame (205) and the sliding guide rail (207). The sliding guide rail (207) is symmetrically fixed on the side of the mounting frame (206), which helps to provide a quick sliding limit and also facilitates disassembly during maintenance. A docking part (209) is provided at the bottom of the sliding guide rail (207), and limit pins (210) are symmetrically provided on the docking part (209). When the second connecting frame (205) slides on the inner side of the sliding guide rail (207), it docks with the bottom of the sliding guide rail (207) through the docking part (209) and wraps around the bottom outer side of the second connecting frame (205). This facilitates the insertion and connection of the limit pin (210) into the limit part (208) on the side of the sliding guide rail (207), thus achieving the function of quick docking and limiting. When disassembling, only the docking part (209) needs to be removed for inspection and maintenance.

2. The automatic power switching device for a redundant DCS system according to claim 1, characterized in that: The ventilation and heat dissipation mechanism (3) includes a ventilation hood (301), which is located on the top of the protective box (101). A high-speed fan (303) is symmetrically installed on the inner side of the ventilation hood (301), and a ventilation fan blade (302) is provided at the output end of the high-speed fan (303).

3. The automatic power switching device for a redundant DCS system according to claim 2, characterized in that: A filter screen (304) is installed on the top of the protective housing (101), and the filter screen (304) is located below the high-speed fan (303).

4. The automatic power switching device for a redundant DCS system according to claim 1, characterized in that: The protective box (101) has a protective box door (102) installed on its front side. The protective box door (102) has a transparent viewing window (103). The protective box door (102) has a power button (104) on its front side. The protective box door (102) has a box door lock (105) installed on one side of its front side.

5. The automatic power switching device for a redundant DCS system according to claim 4, characterized in that: The protective enclosure (101) has several ventilation grilles (106) evenly distributed on both sides. Filter plates (118) are installed on both sides of the inner wall of the protective enclosure (101), and the filter plates (118) are located on the side of the ventilation grilles (106).

6. The automatic power switching device for a redundant DCS system according to claim 5, characterized in that: A fixed support frame (107) is symmetrically fixedly installed on the back of the protective box (101). Several high-strength connecting bolts (108) are evenly distributed on the fixed support frame (107). The high-strength connecting bolts (108) are all connected to the protective box (101). The fixed support frame (107) has symmetrical through holes (109) at both ends.

7. The automatic power switching device for a redundant DCS system according to claim 6, characterized in that: The bottom of the protective box (101) is fixedly installed with a conduit (110), and a dustproof sealing gasket (111) is provided on the inner side of the conduit (110).

8. The automatic power switching device for a redundant DCS system according to claim 1, characterized in that: The power automatic switching device (112) has several displays (113) on its front side, and several adjustment buttons (114) are evenly distributed on its front side, with the adjustment buttons (114) corresponding to the bottom of the displays (113).

9. The automatic power switching device for a redundant DCS system according to claim 8, characterized in that: The bottom of the power automatic switching device (112) is fixedly installed with a power socket (115), and the bottom of the power socket (115) is provided with a number of power ports (116), and the inside of the power ports (116) is connected with a power wire (117).

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