Electromagnetic interference resistant control cabinet for electrical automation of thermal power plants

Abstract

The utility model provides a kind of thermal power plant electrical automation anti-electromagnetic interference control cabinet, it is related to control cabinet technical field, including cabinet, the inside of the cabinet is provided with the partition plate of separating cabinet interior space.Isolated board is placed on the surface of support rod of corresponding height first in the thermal power plant electrical automation anti-electromagnetic interference control cabinet, then rotates transmission wheel, makes threaded rod drive transmission sleeve slide in the inside of limit groove, and the end of two transmission rods mutually away pushes mobile plate to the side of storage groove movement, and pushes second support plate and inserts the inside of sealing gasket, the position of isolated board can be fixed, to facilitate the size of the adjustment of control cabinet interior isolated space, by one group of air exchanger in turn through circular table pipe, air pipe and ventilation pipe, hot air in the inside of cabinet is discharged, and by another group of air exchanger, external air is injected into the inside of cabinet, air circulation in the inside of cabinet is accelerated, so that the inside of cabinet can be cooled.

Description

Technical Field

[0001] This utility model relates to an anti-electromagnetic interference control cabinet, specifically an anti-electromagnetic interference control cabinet for electrical automation in a thermal power plant, belonging to the field of control cabinet technology. Background Technology

[0002] To improve the level of automation, the condensing equipment in the thermal power plant has been equipped with a PLC controller and a frequency converter in the control cabinet. The added PLC controller and frequency converter, together with components such as pressure measurement terminals, liquid level measurement terminals, pressure valve relays, and liquid level valve relays, constitute the control system.

[0003] With the widespread use of power electronic devices such as PLC controllers and frequency converters, electromagnetic interference in the system is becoming increasingly serious. Malfunctions of PLC controllers and frequency converters can cause abnormal operation of connected equipment, posing a serious threat to the overall normal operation of the control system. Furthermore, the existing control cabinet's internal support plate is fixed to the inner wall of the cabinet, making it inconvenient to adjust its internal space according to actual usage needs. Also, due to the good sealing of the anti-interference control cabinet, it is not convenient to cool down the inside of the control cabinet.

[0004] Therefore, an electromagnetic interference-resistant control cabinet for electrical automation in thermal power plants is proposed here. Utility Model Content

[0005] This utility model proposes an electromagnetic interference-resistant control cabinet for electrical automation in thermal power plants. The size of the internal isolation space of the control cabinet can be adjusted according to actual usage needs, and the air circulation inside the cabinet can be accelerated through two sets of ventilation components, thereby cooling the inside of the cabinet.

[0006] This utility model is achieved through the following technical solution: an anti-electromagnetic interference control cabinet for electrical automation in a thermal power plant, comprising a cabinet body, wherein an isolation plate is provided inside the cabinet body to separate the internal space of the cabinet body.

[0007] Furthermore, a cabinet door is installed on one side of the cabinet body, and a handle is installed on one side of the cabinet door.

[0008] Furthermore, a set of first support grooves is provided on both inner side walls of the cabinet. A sealing gasket is fixed inside the first support groove. A set of support rods for supporting the partition plate is fixed on the inner side wall of the cabinet, and the position of the support rods is located below the corresponding first support groove.

[0009] Furthermore, a second support groove is provided on the inner side wall of the cabinet, and a first support plate is fixed on one side of the partition plate. The width of the first support plate is smaller than the width of the second support groove.

[0010] The isolation plate is internally provided with a positioning component that supports the position of the isolation plate. The positioning component includes a limiting groove formed inside the isolation plate and a threaded rod rotatably sleeved inside the isolation plate. One end of the threaded rod rotatably passes through the isolation plate and is fixedly sleeved with a transmission wheel. The outer side of the threaded rod is threadedly sleeved with a transmission sleeve that slides inside the limiting groove. Two transmission rods are rotatably connected to the outer side of the transmission sleeve. The end of the transmission rod away from the transmission sleeve is rotatably connected to a moving plate that slides inside the limiting groove. The end of the moving plate away from the transmission rod is fixed with a second support plate.

[0011] Furthermore, storage grooves are provided on both sides of the isolation plate, and the second support plate is slidably connected inside the storage grooves, with the width of the second support plate being smaller than the width inside the sealing gasket.

[0012] The inner wall of the cabinet is fixed with two ventilation pipes. Each ventilation pipe has a set of air exchange holes on its surface. The top surface of the cabinet is provided with two ventilation components that drive the air flow inside the two ventilation pipes respectively. Each ventilation component includes a ventilation pipe fixed at the top of the ventilation pipe. A frustum tube is fixed at the end of the ventilation pipe away from the ventilation pipe, and the internal space of the frustum tube is connected to the internal space of the ventilation pipe through the ventilation pipe.

[0013] Furthermore, the ventilation assembly also includes a motor fixed to the top surface of the cabinet, and a ventilation fan is installed at the output end of the motor, with the diameter of the outer surface of the ventilation fan being smaller than the inner diameter of the frustum tube.

[0014] This utility model provides an electromagnetic interference-resistant control cabinet for electrical automation in thermal power plants, which has the following beneficial effects: 1. The electromagnetic interference suppression control cabinet for electrical automation in this thermal power plant first places the isolation plate on the surface of the support rod at the corresponding height, then pushes the isolation plate so that the first support plate is embedded in the interior of the second support groove, and then rotates the transmission wheel so that the threaded rod drives the transmission sleeve to slide inside the limiting groove, so that the ends of the two transmission rods that are far apart from each other push the moving plate to one side of the receiving groove and push the second support plate to be embedded in the interior of the sealing gasket. This can fix the position of the isolation plate, thereby facilitating the adjustment of the size of the isolation space inside the control cabinet.

[0015] 2. The electromagnetic interference-resistant control cabinet of the power plant's electrical automation system starts two ventilation motors, which drive two ventilation fans to rotate in opposite directions. One set of ventilation fans exhausts the hot air inside the cabinet through the frustum tube, ventilation pipe and ventilation pipe in sequence, and injects outside air into the cabinet through the other set of ventilation components, thereby accelerating the air circulation inside the cabinet and cooling the inside of the cabinet. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the cabinet body in this utility model; Figure 3 This is a three-dimensional sectional view of the internal structure of the isolation plate in this utility model; Figure 4 This is a three-dimensional structural diagram of the ventilation component and ventilation duct in this utility model.

[0017] Explanation of reference numerals in the attached figures 1. Cabinet body; 101. First support groove; 102. Sealing gasket; 103. Support rod; 104. Second support groove; 2. Cabinet door; 3. Handle; 4. Isolation plate; 41. First support plate; 5. Positioning component; 51. Limiting groove; 52. Threaded rod; 53. Transmission sleeve; 54. Transmission rod; 55. Moving plate; 56. Second support plate; 57. Storage groove; 58. Transmission wheel; 6. Ventilation duct; 61. Air exchange vent; 7. Ventilation assembly; 71. Ventilation pipe; 72. Frustum tube; 73. Motor; 74. Ventilation fan. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0019] Please see Figures 1-4 The present invention proposes the following implementation scheme: an electromagnetic interference-resistant control cabinet for electrical automation in a thermal power plant, comprising a cabinet body 1, wherein an isolation plate 4 is provided inside the cabinet body 1 to separate the internal space of the cabinet body 1.

[0020] Please refer to this carefully. Figure 1 Cabinet 1 has a cabinet door 2 installed on one side, and cabinet door 2 has a handle 3 installed on one side.

[0021] Please refer to this carefully. Figure 2 and Figure 3 Both inner walls of the cabinet 1 are provided with a set of first support grooves 101. A sealing gasket 102 is fixed inside the first support groove 101. A set of support rods 103 for supporting the partition plate 4 is fixed on the inner wall of the cabinet 1, and the position of the support rods 103 is located below the corresponding first support groove 101.

[0022] A set of second support grooves 104 is provided on the inner side wall of the cabinet 1, and a first support plate 41 is fixed on one side of the partition plate 4. The width of the first support plate 41 is smaller than the width of the second support grooves 104.

[0023] In the above scheme, the connection between the isolation plate 4 and the cabinet 1 can be sealed by the cooperation between the first support plate 41 and the second support groove 104, and by the cooperation between the second support plate 56 and the first support groove 101, thereby improving the anti-interference effect of each space inside the control cabinet.

[0024] Please refer to this carefully. Figure 3 The isolation plate 4 is provided with a positioning component 5 to support the position of the isolation plate 4. The positioning component 5 includes a limiting groove 51 opened inside the isolation plate 4 and a threaded rod 52 rotatably sleeved inside the isolation plate 4. One end of the threaded rod 52 rotatably passes through the isolation plate 4 and is fixedly sleeved with a transmission wheel 58. The outer periphery of the threaded rod 52 is threadedly sleeved with a transmission sleeve 53 that slides inside the limiting groove 51. Two transmission rods 54 are rotatably connected to the outer periphery of the transmission sleeve 53. The end of the transmission rod 54 away from the transmission sleeve 53 is rotatably connected to a moving plate 55 that slides inside the limiting groove 51. The end of the moving plate 55 away from the transmission rod 54 is fixed with a second support plate 56.

[0025] The isolation plate 4 has storage grooves 57 on both sides, and the second support plate 56 is slidably connected inside the storage grooves 57. The width of the second support plate 56 is smaller than the width inside the sealing gasket 102.

[0026] In the above scheme, rotating the transmission wheel 58 causes the threaded rod 52 to drive the transmission sleeve 53 to slide inside the limiting groove 51, causing the ends of the two transmission rods 54 that are far apart to push the moving plate 55 to one side of the receiving groove 57, and push the second support plate 56 to embed into the sealing gasket 102, thereby fixing the position of the isolation plate 4.

[0027] Please refer to this carefully. Figure 4 Two ventilation pipes 6 are fixed to the inner side wall of the cabinet 1. Each ventilation pipe 6 has a set of ventilation holes 61 on its surface. The top surface of the cabinet 1 is provided with two ventilation components 7 that drive the air flow inside the two ventilation pipes 6 respectively. The ventilation component 7 includes a ventilation pipe 71 fixed to the top of the ventilation pipe 6. A frustum tube 72 is fixed to the end of the ventilation pipe 71 away from the ventilation pipe 6, and the internal space of the frustum tube 72 is connected to the internal space of the ventilation pipe 6 through the ventilation pipe 71.

[0028] In the above scheme, the special shape of the frustum tube 72 can accelerate the air flowing into the cabinet 1 and buffer the flow rate of the hot air discharged from the cabinet 1.

[0029] The ventilation assembly 7 also includes a motor 73 fixed to the top surface of the cabinet 1. An ventilation fan 74 is installed at the output end of the motor 73, and the diameter of the outer surface of the ventilation fan 74 is smaller than the inner diameter of the frustum tube 72.

[0030] In the above scheme, two ventilation motors 73 are started, driving two ventilation fans 74 to rotate in opposite directions. One set of ventilation fans 74 exhausts the hot air inside the cabinet 1 through the frustum tube 72, the ventilation pipe 71 and the ventilation pipe 6 in sequence, and injects the outside air into the cabinet 1 through another set of ventilation components 7, thereby accelerating the air circulation inside the cabinet 1.

[0031] In use, this utility model adjusts the height of the isolation plate 4 inside the cabinet 1 according to the control cabinet's requirements. First, the isolation plate 4 is placed on the surface of the support rod 103 at the corresponding height. Then, the isolation plate 4 is pushed so that the first support plate 41 is embedded in the second support groove 104. Next, the transmission wheel 58 is rotated so that the threaded rod 52 drives the transmission sleeve 53 to slide inside the limiting groove 51. This causes the ends of the two transmission rods 54 that are far apart to push the moving plate 55 to one side of the receiving groove 57 and push the second support plate 56 to be embedded in the sealing gasket 102. This fixes the position of the isolation plate 4, making it easier to adjust the size of the isolation space inside the control cabinet. At the same time, the cooperation between the first support plate 41 and the second support groove 104, and the cooperation between the second support plate 56 and the first support groove 101, seals the connection between the isolation plate 4 and the cabinet 1, increasing the anti-interference effect of each space inside the control cabinet. Two ventilation motors 73 are started, driving two ventilation fans 74 to rotate in opposite directions. One set of ventilation fans 74 exhausts the hot air inside the cabinet 1 through the frustum tube 72, ventilation pipe 71 and ventilation pipe 6 in sequence, and injects outside air into the cabinet 1 through the other set of ventilation components 7, accelerating the air circulation inside the cabinet 1, thereby cooling the inside of the cabinet 1.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A control cabinet for electromagnetic interference suppression in electrical automation of a thermal power plant, comprising a cabinet (1), characterized in that: The cabinet (1) is provided with an isolation plate (4) that separates the internal space of the cabinet (1). The isolation plate (4) is provided with a positioning component (5) that supports the position of the isolation plate (4). The positioning component (5) includes a limiting groove (51) opened inside the isolation plate (4) and a threaded rod (52) rotatably sleeved inside the isolation plate (4). One end of the threaded rod (52) rotatably passes through the isolation plate (4) and is fixedly sleeved with a transmission wheel (58). The outer periphery of the threaded rod (52) is threadedly sleeved with a transmission sleeve (53) that slides inside the limiting groove (51). The outer periphery of the transmission sleeve (53) is rotatably connected to two transmission rods (54). The end of the transmission rod (54) away from the transmission sleeve (53) is rotatably connected to a moving plate (55) that slides inside the limiting groove (51). The end of the moving plate (55) away from the transmission rod (54) is fixed with a second support plate (56). The inner wall of the cabinet (1) is fixed with two ventilation pipes (6). Each ventilation pipe (6) has a set of ventilation holes (61) on its surface. The top surface of the cabinet (1) is provided with two ventilation components (7) that drive the air flow inside the two ventilation pipes (6). The ventilation component (7) includes a ventilation pipe (71) fixed at the top of the ventilation pipe (6). A frustum tube (72) is fixed at the end of the ventilation pipe (71) away from the ventilation pipe (6). The internal space of the frustum tube (72) is connected to the internal space of the ventilation pipe (6) through the ventilation pipe (71).

2. The electromagnetic interference suppression control cabinet for electrical automation in a thermal power plant according to claim 1, characterized in that: The cabinet (1) has a cabinet door (2) installed on one side, and a handle (3) is installed on one side of the cabinet door (2).

3. The electromagnetic interference suppression control cabinet for electrical automation in a thermal power plant according to claim 1, characterized in that: The cabinet (1) has a set of first support grooves (101) on both inner side walls. A sealing gasket (102) is fixed inside the first support groove (101). A set of support rods (103) for supporting the isolation plate (4) is fixed on the inner side wall of the cabinet (1), and the position of the support rods (103) is below the corresponding first support groove (101).

4. The electromagnetic interference suppression control cabinet for electrical automation in a thermal power plant according to claim 1, characterized in that: The inner wall of the cabinet (1) is provided with a set of second support grooves (104), and a first support plate (41) is fixed on one side of the partition plate (4). The width of the first support plate (41) is smaller than the width of the second support groove (104).

5. The electromagnetic interference suppression control cabinet for electrical automation in a thermal power plant according to claim 1, characterized in that: The isolation plate (4) has storage grooves (57) on both sides. The second support plate (56) is slidably connected inside the storage groove (57), and the width of the second support plate (56) is smaller than the width inside the sealing gasket (102).

6. The electromagnetic interference suppression control cabinet for electrical automation in a thermal power plant according to claim 1, characterized in that: The ventilation assembly (7) also includes a motor (73) fixed on the top surface of the cabinet (1). The output end of the motor (73) is equipped with a ventilation fan (74), and the diameter of the outer surface of the ventilation fan (74) is smaller than the inner diameter of the frustum tube (72).

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