Intelligent control type digital low-voltage switch cabinet for nuclear power plant

Abstract

The utility model relates to low -voltage switchgear technical field especially a kind of nuclear power plant with intelligent control type digital low -voltage switchgear, including cabinet, the inside intermediate fixed of cabinet is provided with baffle, the top of baffle is provided with exhaust and heat abstract mechanism, baffle's both sides swing mounting have supporting plate, lifting clamping mechanism is arranged between the inside of supporting plate and cabinet. Advantageous effect lies in: the utility model motor drives gear reverse rotation, and engages drive two tooth plates to move outward, drive clamping post inserts clamping hole, and then to supporting plate and column between clamping positioning installation, keep supporting plate stable installation in cabinet inside, without opening low -voltage switchgear, different positions can be automatically controlled supporting plate to lift adjustment, it is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear technology, and in particular to an intelligent control type digital low-voltage switchgear for nuclear power plants. Background Technology

[0002] The main function of intelligent low-voltage switchgear is to open, close, control, and protect electrical equipment during the power generation, transmission, distribution, and energy conversion processes in a power system. The main components inside the switchgear include circuit breakers, disconnect switches, load switches, operating mechanisms, instrument transformers, and various protective devices, all installed in pull-out drawers for easy maintenance. Low-voltage switchgear is widely used in power plants, substations, factories, and other power users for the conversion, distribution, and control of power, lighting, and distribution equipment. In nuclear power plants, intelligent control-type digital low-voltage switchgear is generally required.

[0003] For example, the prior art Chinese patent publication number "CN217741050U" provides an intelligent control type digital low-voltage switchgear, including a low-voltage switchgear, a sliding door, and a rotating door. The front left end of the low-voltage switchgear has a groove, the sliding door is located at the front end of the groove, and hydraulic telescopic rods are fixed on both sides of the rear of the sliding door. The rear end of the hydraulic telescopic rods is connected to a hydraulic cylinder, which is embedded in the groove. Metal positioning grooves are distributed at the top and bottom of the groove. Magnetic blocks are fixedly distributed at the upper and lower rear ends of the sliding door. A first intelligent display screen is provided at the upper front end of the sliding door. The rotating door is connected to the front right end of the low-voltage switchgear by a hinge.

[0004] The device features an orderly installation of intelligent, digitally controlled low-voltage electrical equipment, facilitating quick identification of relevant electrical devices. The sliding cabinet door allows for easy manual extension and retraction, ensuring high stability and reliability. The rotating cabinet door is convenient for manual opening and closing.

[0005] Existing intelligent control type digital low-voltage switchgear used in nuclear power plants has a fixed position for the support plates used to install various electrical components. The cabinet needs to be opened to adjust the height of the support plates, which leads to dust entering the cabinet. The support plates cannot be automatically adjusted in height when the cabinet is closed. Furthermore, the different components on the support plates have different heat dissipation requirements. Heat dissipation is only achieved through the ventilation holes on the side of the cabinet, which fails to accelerate heat dissipation around components that generate a lot of heat. This can cause these components with high heat dissipation to malfunction due to high temperatures, affecting the normal operation of the low-voltage switchgear.

[0006] Therefore, an intelligent control type digital low-voltage switchgear for nuclear power plants is proposed. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies where the support plates used to install various electrical components have relatively fixed positions, requiring the cabinet to be opened to adjust the height of the support plates, which leads to dust entering the cabinet and prevents the support plates from automatically adjusting their height when the cabinet is closed. Therefore, this invention proposes an intelligent control type digital low-voltage switchgear for nuclear power plants.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] Design a smart control type digital low-voltage switchgear for nuclear power plants, including a cabinet, a partition plate fixed in the middle of the cabinet, a ventilation and heat dissipation mechanism at the top of the partition plate, support plates movably installed on both sides of the partition plate, and a lifting and locking mechanism between the support plates and the interior of the cabinet.

[0010] The lifting and locking mechanism includes a first electric push rod and a drive locking mechanism installed on both sides of the top of the support plate. Inside the cabinet and on both sides of the partition plate, there are columns fixed. The four corners of both sides of the support plate have sliding grooves that are slidably locked to the outside of the columns. The first electric push rod is vertically connected to the middle of the bottom end of the support plate.

[0011] The drive engagement mechanism includes a toothed plate and a engagement pin. The engagement pin is fixed to the outer end of the toothed plate. An mounting plate is fixed in the middle of both sides of the top of the support plate. An engagement groove is opened inside the mounting plate. The toothed plates on both sides are slidably installed at the upper and lower ends inside the engagement groove. A gear for meshing and driving the two toothed plates to move is rotatably installed inside the engagement groove.

[0012] Furthermore, a controller is installed at the bottom outer side of the cabinet, a cabinet door is hinged to the front of the cabinet, a touch display panel is installed on the surface of the cabinet door, the touch display panel is electrically connected to the controller, a temperature sensor is embedded at the top surface of the support plate, a distance sensor is embedded at the bottom surface of the support plate, the first electric push rod, the temperature sensor and the distance sensor are all electrically connected to the controller, and a heat dissipation hole is opened on the rear side of the cabinet.

[0013] Furthermore, the column is a rectangular column structure and is vertically arranged, the support plate is horizontally arranged, the mounting plate is vertically arranged, the toothed plate is horizontally arranged between the two columns, and the surface of the column is evenly spaced with snap-fit ​​holes, and the snap-fit ​​column is slidably inserted into the snap-fit ​​holes.

[0014] Furthermore, the toothed plate has an L-shaped structure and its length is greater than half the distance between the two columns. The gear is horizontally arranged, and a motor is installed at one end. The motor is fixedly installed on the side of the mounting plate.

[0015] Furthermore, the exhaust and heat dissipation mechanism includes an exhaust fan, a ventilation slot, and a switch control mechanism. The partition plate is vertically arranged and has an air guide cavity inside. The ventilation slots are evenly spaced on both sides of the air guide cavity. The exhaust fan is fixedly installed on the top of the cabinet, and its bottom exhaust structure is inserted into the middle of the air guide cavity. The switch control mechanism is installed on the inner side of the ventilation slot.

[0016] Furthermore, the switch control mechanism includes a baffle, which is slidably installed inside the air guide cavity and blocks the inner side of the ventilation slot. Its length and width dimensions are uniformly larger than the length and width dimensions of the ventilation slot.

[0017] Furthermore, a support strip is fixed to the inner surface of the air guide cavity and at the bottom of the ventilation slot. The support strip is a long strip structure and is horizontally arranged. Its cross-section is L-shaped. The baffle is slidably installed on the top of the support strip.

[0018] Furthermore, a second electric push rod is fixedly installed on the inner surface of the air guide cavity. The second electric push rod is horizontally arranged, and a connecting plate is fixed to one end of the baffle. The telescopic end of the second electric push rod is fixedly connected to the outside of the connecting plate.

[0019] The intelligent control type digital low-voltage switchgear for nuclear power plants proposed in this utility model has the following advantages:

[0020] 1. This utility model features columns installed inside the cabinet, with a support plate movably mounted between four columns. The support plate is secured to the columns using toothed plates and snap-fit ​​mechanisms. Therefore, with the cabinet door closed, the controller and touchscreen panel control a first electric push rod and a motor. The motor drives a gear to rotate, meshing and moving two toothed plates, pulling the snap-fit ​​pins out of their snap-fit ​​holes. Simultaneously, the first electric push rod moves the support plate up and down, and a distance sensor detects the distance between the support plates. After the support plate is adjusted to the correct height by the first electric push rod, the motor drives the gear to rotate in the opposite direction, meshing and moving the two toothed plates outward, inserting the snap-fit ​​pins into their snap-fit ​​holes. This secures the support plate to the columns, ensuring stable installation inside the cabinet. This design allows for automatic adjustment of the support plate to different positions without opening the low-voltage switchgear, making it quite convenient.

[0021] 2. This utility model sets up an air guide cavity in the partition plate inside the cabinet. During use, various components inside the low-voltage switch cabinet dissipate heat through heat dissipation holes, and the temperature of the top of each support plate is detected by a temperature sensor. When the temperature of the components is high during use, the temperature sensor sends a signal to the controller, which controls the operation of the exhaust fan and the second electric push rod. The exhaust fan draws air outward from inside the air guide cavity. At the same time, the controller, based on the signal from the temperature sensor, controls the movement of the second electric push rod near the component with a large amount of heat dissipation. The second electric push rod pulls the baffle, opening the ventilation slot, thus connecting the inside of the cabinet, the ventilation slot, and the air guide cavity. This allows for rapid exhaust and heat dissipation around the component with a large amount of heat dissipation, accelerating the heat dissipation and ventilation inside the cabinet. When the temperature of the components inside the cabinet is below the temperature threshold set by the temperature sensor, the exhaust fan does not run, which can reduce power consumption. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This utility model Figure 1 A schematic diagram of the cabinet interior and partition panels;

[0024] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0025] Figure 4 This utility model Figure 1 A partial schematic diagram of the lifting and locking mechanism and the exhaust and heat dissipation mechanism;

[0026] Figure 5 This utility model Figure 1 A schematic diagram of the gear plate and gear components;

[0027] Figure 6 This utility model Figure 1 A schematic diagram of the support plate and electric push rod;

[0028] Figure 7 This utility model Figure 1 A schematic diagram of the baffle and the second electric push rod.

[0029] In the diagram: 1. Cabinet; 2. Exhaust fan; 3. Controller; 4. Cabinet door; 5. Touch display panel; 6. Partition plate; 7. Support plate; 8. Temperature sensor; 9. Column; 10. Gear plate; 11. Mounting plate; 12. Snap-fit ​​hole; 13. First electric push rod; 14. Baffle; 15. Air guide cavity; 16. Support bar; 17. Heat dissipation hole; 18. Ventilation slot; 19. Snap-fit ​​post; 20. Motor; 21. Gear; 22. Connecting plate; 23. Second electric push rod; 24. Distance sensor; 25. Sliding groove; 26. Mounting groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Example 1

[0032] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The diagram shows a smart control type digital low-voltage switchgear for nuclear power plants, including a cabinet 1. A partition plate 6 is fixed in the middle of the interior of the cabinet 1. A ventilation and heat dissipation mechanism is provided at the top of the partition plate 6. Support plates 7 are movably installed on both sides of the partition plate 6. A lifting and locking mechanism is provided between the support plates 7 and the interior of the cabinet 1.

[0033] A controller 3 is installed at the bottom of the outer side of the cabinet 1. A cabinet door 4 is hinged to the front of the cabinet 1. A touch display panel 5 is installed on the surface of the cabinet door 4. The touch display panel 5 is electrically connected to the controller 3. A temperature sensor 8 is embedded at the top of the surface of the support plate 7. A distance sensor 24 is embedded at the bottom of the support plate 7. The first electric push rod 13, the temperature sensor 8 and the distance sensor 24 are all electrically connected to the controller 3. A heat dissipation hole 17 is opened on the rear side of the cabinet 1.

[0034] The lifting and locking mechanism includes a first electric push rod 13 and a drive locking mechanism installed on both sides of the top of the support plate 7. Inside the cabinet 1, a column 9 is fixed on both sides of the partition plate 6. Sliding grooves 25 are opened at the four corners of both sides of the support plate 7 to slide and lock onto the outside of the column 9. The first electric push rod 13 is vertically connected to the middle of the bottom end of the support plate 7.

[0035] With cabinet 1 closed by cabinet door 4, the first electric push rod 13 and motor 20 are controlled by controller 3 and touch display panel 5. Motor 20 drives gear 21 to rotate and meshes to drive two toothed plates 10 to move, so that the locking post 19 is pulled out of the locking hole 12. At the same time, the first electric push rod 13 drives the support plate 7 to move up and down, and the distance sensor 24 detects the distance between the support plates 7.

[0036] The drive engagement mechanism includes a toothed plate 10 and a engagement post 19. The engagement post 19 is fixed to the outer end of the toothed plate 10. A mounting plate 11 is fixed in the middle of both sides of the top of the support plate 7. The mounting plate 11 has an installation groove 26 inside. The toothed plates 10 on both sides are slidably mounted on the upper and lower ends inside the installation groove 26. A gear 21 for meshing and driving the two toothed plates 10 to move is rotatably mounted inside the installation groove 26.

[0037] The column 9 is a rectangular column structure and is set vertically. The support plate 7 is set horizontally, the mounting plate 11 is set vertically, and the toothed plate 10 is set horizontally between the two columns 9. The surface of the column 9 has evenly spaced snap-fit ​​holes 12, and the snap-fit ​​column 19 is slidably inserted into the snap-fit ​​hole 12.

[0038] The toothed plate 10 has an L-shaped structure and its length is greater than half the distance between the two columns 9. The gear 21 is set horizontally, and a motor 20 is installed at one end. The motor 20 is fixedly installed on the side of the mounting plate 11.

[0039] After the support plate 7 is adjusted to the correct height by the first electric push rod 13, the motor 20 drives the gear 21 to rotate in the opposite direction and meshes with the two toothed plates 10 to move outward, thereby driving the locking post 19 to insert into the locking hole 12, and thus locking and positioning the support plate 7 and the column 9, keeping the support plate 7 stably installed inside the cabinet 1. There is no need to open the low-voltage switch cabinet, and the support plate 7 can be automatically controlled to adjust to different positions, which is quite convenient.

[0040] Example 2

[0041] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The diagram shows a smart control type digital low-voltage switchgear for nuclear power plants, including a cabinet 1. A partition plate 6 is fixed in the middle of the interior of the cabinet 1. A ventilation and heat dissipation mechanism is provided at the top of the partition plate 6. Support plates 7 are movably installed on both sides of the partition plate 6. A lifting and locking mechanism is provided between the support plates 7 and the interior of the cabinet 1.

[0042] The ventilation and heat dissipation mechanism includes a fan 2, a ventilation slot 18, and a switch control mechanism. The partition plate 6 is set vertically and has an air guide cavity 15 inside. The ventilation slots 18 are evenly spaced on both sides of the air guide cavity 15. The fan 2 is fixedly installed on the top of the cabinet 1, and its bottom exhaust structure is inserted into the middle of the air guide cavity 15. The switch control mechanism is installed on the inside of the ventilation slot 18.

[0043] The switch control mechanism includes a baffle 14, which is slidably installed inside the air guide cavity 15 and blocks the inner side of the ventilation slot 18. Its length and width dimensions are uniformly larger than the length and width dimensions of the ventilation slot 18.

[0044] A support bar 16 is fixed on the inner surface of the air guide cavity 15 and at the bottom of the ventilation slot 18. The support bar 16 is a long strip structure and is set horizontally. Its cross-section is L-shaped. The baffle 14 is slidably installed on the top of the support bar 16.

[0045] A second electric push rod 23 is fixedly installed on the inner surface of the air guide cavity 15. The second electric push rod 23 is horizontally set. A connecting plate 22 is fixed to one end of the baffle 14. The telescopic end of the second electric push rod 23 is fixedly connected to the outside of the connecting plate 22.

[0046] When the temperature of the components is high during use, the temperature sensor 8 sends a signal to the controller 3. The controller 3 then controls the operation of the exhaust fan 2 and the second electric push rod 23. The exhaust fan 2 draws air outward from inside the air guide cavity 15. At the same time, based on the signal sent by the temperature sensor 8, the controller 3 controls the movement of the second electric push rod 23, which is located near the components that generate a lot of heat. The second electric push rod 23 pulls the baffle 14, opening the ventilation slot 18, thus connecting the inside of the cabinet 1, the ventilation slot 18, and the air guide cavity 15. This allows for rapid air extraction and heat dissipation around the components that generate a lot of heat, accelerating the heat dissipation and ventilation inside the cabinet 1.

[0047] Operating method: Uprights 9 are installed inside the cabinet 1, and support plates 7 are movably installed between the four uprights 9. The support plates 7 and the uprights 9 are engaged via toothed plates 10 and snap-fit ​​posts 19. Therefore, when the cabinet door 4 is closed, the controller 3 and touch display panel 5 control the first electric push rod 13 and the motor 20. The motor 20 drives the gear 21 to rotate, meshing and driving the two toothed plates 10 to move, causing the snap-fit ​​posts 19 to be pulled out of the snap-fit ​​holes 12. Simultaneously, the first electric push rod 13 drives the support plates 7... The system moves up and down, and the distance sensor 24 detects the distance between the support plates 7. After the support plates 7 are adjusted to the correct height by the first electric push rod 13, the motor 20 drives the gear 21 to rotate in the opposite direction and meshes with the two toothed plates 10 to move outward. This causes the locking pin 19 to be inserted into the locking hole 12, thereby locking and positioning the support plates 7 and the uprights 9. This keeps the support plates 7 stably installed inside the cabinet 1. The system can automatically control the support plates 7 to move up and down to different positions without opening the low-voltage switch cabinet, which is quite convenient.

[0048] An air guide cavity 15 is set in the partition plate 6 inside the cabinet 1. During use, various components inside the low-voltage switch cabinet dissipate heat through the heat dissipation holes 17, and the temperature of the top of each support plate 7 is detected by the temperature sensor 8. When the temperature of the components is high during use, the temperature sensor 8 sends a signal to the controller 3, and the controller 3 controls the operation of the exhaust fan 2 and the second electric push rod 23. The exhaust fan 2 draws air out from inside the air guide cavity 15. At the same time, the controller 3 controls the second electric push rod 23 near the component with a large amount of heat dissipation according to the signal sent by the temperature sensor 8. The second electric push rod 23 pulls the baffle 14 and opens the ventilation slot 18, so that the inside of the cabinet 1, the ventilation slot 18 and the air guide cavity 15 are connected, thereby quickly exhausting and dissipating heat around the component with a large amount of heat dissipation, accelerating the heat dissipation and ventilation inside the cabinet 1. When the temperature of the components inside the cabinet 1 is below the temperature threshold set by the temperature sensor 8, the exhaust fan 2 does not run, which can reduce power consumption.

[0049] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A smart control type digital low-voltage switchgear for nuclear power plants, comprising a cabinet (1), characterized in that: A partition plate (6) is fixed in the middle of the interior of the cabinet (1). A ventilation and heat dissipation mechanism is provided at the top of the partition plate (6). Support plates (7) are movably installed on both sides of the partition plate (6). A lifting and locking mechanism is provided between the support plate (7) and the interior of the cabinet (1). The lifting and locking mechanism includes a first electric push rod (13) and a drive locking mechanism installed on both sides of the top of the support plate (7). Inside the cabinet (1) and at the position on both sides of the partition plate (6), there are columns (9). The four corners of both sides of the support plate (7) have sliding grooves (25) that are slidably locked to the outside of the columns (9). The first electric push rod (13) is vertically connected to the middle of the bottom end of the support plate (7).

2. The intelligent control type digital low-voltage switchgear for nuclear power plants according to claim 1, characterized in that: The drive engagement mechanism includes a toothed plate (10) and a engagement post (19). The engagement post (19) is fixed to the outer end of the toothed plate (10). An mounting plate (11) is fixed in the middle of both sides of the top of the support plate (7). An engagement groove (26) is opened inside the mounting plate (11). The toothed plates (10) on both sides are slidably mounted on the upper and lower ends inside the engagement groove (26). A gear (21) for meshing and driving the two toothed plates (10) to move is rotatably mounted inside the engagement groove (26).

3. The intelligent control type digital low-voltage switchgear for nuclear power plants according to claim 2, characterized in that: A controller (3) is installed on the bottom outer side of the cabinet (1). A cabinet door (4) is hinged to the front of the cabinet (1). A touch display panel (5) is installed on the surface of the cabinet door (4). The touch display panel (5) is electrically connected to the controller (3). A temperature sensor (8) is embedded at the top surface of the support plate (7). A distance sensor (24) is embedded at the bottom of the support plate (7). The first electric push rod (13), the temperature sensor (8), and the distance sensor (24) are all electrically connected to the controller (3). A heat dissipation hole (17) is opened on the rear side of the cabinet (1).

4. The intelligent control type digital low-voltage switchgear for nuclear power plants according to claim 2, characterized in that: The column (9) is a rectangular column structure and is set vertically. The support plate (7) is set horizontally. The mounting plate (11) is set vertically. The toothed plate (10) is set horizontally between the two columns (9). The surface of the column (9) is evenly and equidistantly provided with snap-fit ​​holes (12). The snap-fit ​​column (19) is slidably inserted into the snap-fit ​​hole (12).

5. A smart control type digital low-voltage switchgear for nuclear power plants according to claim 2, characterized in that: The toothed plate (10) has an L-shaped structure and its length is greater than half the distance between the two columns (9). The gear (21) is set horizontally and a motor (20) is installed at one end. The motor (20) is fixedly installed on the side of the mounting plate (11).

6. The intelligent control type digital low-voltage switchgear for nuclear power plants according to claim 2, characterized in that: The exhaust and heat dissipation mechanism includes an exhaust fan (2), a ventilation slot (18), and a switch control mechanism. The partition plate (6) is vertically arranged and has an air guide cavity (15) inside. The ventilation slots (18) are evenly spaced on both sides of the air guide cavity (15). The exhaust fan (2) is fixedly installed on the top of the cabinet (1), and its bottom exhaust structure is inserted into the middle of the air guide cavity (15). The switch control mechanism is installed on the inner side of the ventilation slot (18).

7. A smart control type digital low-voltage switchgear for nuclear power plants according to claim 6, characterized in that: The switch control mechanism includes a baffle (14), which is slidably installed inside the air guide cavity (15) and blocks the inner side of the ventilation slot (18). Its length and width are uniformly larger than the length and width of the ventilation slot (18).

8. A smart control type digital low-voltage switchgear for nuclear power plants according to claim 7, characterized in that: A support strip (16) is fixed on the inner surface of the air guide cavity (15) and at the bottom of the ventilation groove (18). The support strip (16) is a long strip structure and is horizontally arranged. Its cross-section is L-shaped. The baffle (14) is slidably installed on the top of the support strip (16).

9. A smart control type digital low-voltage switchgear for nuclear power plants according to claim 8, characterized in that: A second electric push rod (23) is fixedly installed on the inner surface of the air guide cavity (15). The second electric push rod (23) is horizontally arranged. A connecting plate (22) is fixed to one end of the baffle (14). The telescopic end of the second electric push rod (23) is fixedly connected to the outside of the connecting plate (22).

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