Switch cabinet with monitoring and alarm function

Abstract

The application discloses a switch cabinet with a monitoring alarm function, which comprises a switch cabinet body, a bus contact installed in the switch cabinet body, a cable chamber electrically connected with the bus contact through a cable, and a monitoring alarm unit arranged on one side of the top of the switch cabinet body close to the bus contact and used for monitoring the temperature in the switch cabinet body in real time and sending an alarm. The switch cabinet can solve the problem that the bus contact in the switch cabinet body is aged and heated after long-term use, which causes safety hazards of the switch cabinet and cannot be found and blocked in time, and can realize real-time monitoring of a heating source in the switch cabinet body, accurate finding of the bus contact with problems and power cut-off of the bus contact.

Description

Technical Field

[0001] This application relates to the field of switchgear technology. ， In particular, it relates to a switch cabinet with monitoring and alarm functions. Background Technology

[0002] A switch cabinet is an electrical device. External lines first enter the main control switch inside the cabinet, and then enter the branch control switches. Each branch circuit is set according to its needs. The main function of the switch cabinet is to open, close, control and protect electrical equipment during the power generation, transmission, distribution and energy conversion process of the power system.

[0003] Switchgear typically includes a temperature protection system. This system monitors the internal temperature and uses a temperature protection alarm to detect changes in the internal temperature. When the internal temperature exceeds the rated value, the temperature protection alarm will activate and cut off the circuit, ensuring the normal operation of the equipment.

[0004] However, during the implementation of the relevant technical solutions, at least the following technical problems were found: First, the contacts and busbar connections in the switchgear may heat up due to aging or excessive contact resistance during long-term operation. Because the temperature of these heated parts is difficult to monitor in real time, it can ultimately lead to fire accidents. Second, there are multiple busbar locations, making it impossible to detect them accurately during the testing process, which can easily lead to inaccurate monitoring results. Summary of the Invention

[0005] This application provides a switchgear with monitoring and alarm functions, which solves the problem in the prior art where the busbar contacts, after long-term use within the switchgear body, age and cause overheating, resulting in safety hazards that cannot be identified and blocked in time. It enables real-time monitoring of heat sources within the switchgear body while accurately locating the problematic busbar contacts and cutting off their power.

[0006] This application provides a switchgear with monitoring and alarm functions, including a switchgear body and busbar contacts installed inside the switchgear body, and further including: a cable compartment electrically connected to the busbar contacts via cables; a monitoring and alarm unit located on the top of the switchgear body near the busbar contacts, used to monitor the temperature inside the switchgear body in real time and issue an alarm; the monitoring and alarm unit includes: a preliminary alarm component located in the cable compartment, used to initially monitor the temperature inside the switchgear body and issue an alarm while simultaneously cooling it; a secondary alarm component located outside the preliminary alarm component, used to check the busbar contact positions one by one and cool them down; the preliminary alarm component includes: a first temperature sensor located in the cable compartment, used to monitor the temperature inside the cable compartment; a first alarm electrically connected to the first temperature sensor, used to alarm the temperature inside the cable compartment; and a preliminary cooling component located in the cable compartment, used to uniformly cool the space inside the cable compartment.

[0007] Furthermore, the preliminary cooling component is provided in two sets, and the two sets of preliminary cooling components are symmetrically arranged about the busbar contact at the middle position.

[0008] Furthermore, the preliminary cooling component includes: a triangular block, which is disposed on the top of the busbar contact and has a slide rail on it; a first movable column, which is slidably connected in the slide rail and is driven by a first power device; and a first spray head, which is connected to the first movable column and is used to spray cooling gas to cool the cable chamber.

[0009] Furthermore, the re-alarm component includes: a re-monitoring component, which is located on the outside of the triangular block and is used to check the busbar contacts one by one and issue an alarm; a re-cooling component, which is located at the bottom of the triangular block and is used to cyclically cool the busbar contacts; and a blocking component, which is located at the top of the busbar contacts and is used to cut off the cable connected to the busbar contact with the detected problem.

[0010] Furthermore, the re-monitoring component includes: a triangular track, which is equidistantly located outside the triangular block and has toothed grooves inside; a moving gear, which meshes with the toothed grooves and is driven by a second power device to move along the trajectory of the triangular track; a monitoring plate, which is coaxially connected to the moving gear and has a second temperature sensor electrically connected to a second alarm; and a cutting component, which is located on the side of the cable connected to the busbar contact and is used to cut off the cable connected to the abnormal busbar contact.

[0011] Furthermore, the re-cooling component includes: a loop track located at the bottom of the triangular block; a second movable column slidably connected within the loop track and driven by a third power device; and a second spray head connected to the second movable column for cyclically moving along the loop track to cool the busbar contacts.

[0012] Furthermore, limiting blocks are provided in both the slide and the loop track, and an elastic element is provided on one side of each limiting block. The elastic element achieves the limiting of the limiting block in the slide and the loop track through elastic deformation.

[0013] Furthermore, a guide surface is provided on the side of the limiting block away from the elastic element.

[0014] Furthermore, the blocking element includes: A first electromagnetic block is mounted on a monitoring plate; a sliding groove is mounted on a busbar contact, and a second electromagnetic block is slidably connected within the sliding groove. The first and second electromagnetic blocks repel each other, and a switch is provided at the end of the sliding groove away from the second electromagnetic block.

[0015] Furthermore, the cutting component includes: a half gear, which is disposed at the top of the sliding groove, and two sets of the half gear are provided, which are meshed with each other; and a cutting blade, which is coaxially connected to the half gear and is used to cut the cable connected to the abnormal busbar contact.

[0016] The technical solution provided in this application has at least the following technical effects or advantages: This application employs a preliminary alarm component and a secondary alarm component. After the first temperature sensor performs overall and uniform monitoring of the cable compartment within the switchgear body, the first spray head uniformly cools the cable compartment. After the cooling process is complete, the first alarm stops. When a problem occurs in the busbar contact cable, the temperature rises instantaneously, making rapid cooling impossible. Simultaneously, the first alarm sounds, and the second temperature sensor is controlled to move along a triangular track to check the busbar contacts one by one. During the check, the sensor finds the busbar contact with the highest temperature and triggers the second alarm. After the alarm sounds, the sensor stops moving and controls a cutting blade to cut the cable connected to the busbar contact. Therefore, this effectively solves the problem of existing busbar contact problems where the location of the problem cannot be accurately located, and the power supply cannot be cut off in time to avoid safety accidents. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application; Figure 2This is a schematic diagram of the overall right view of Embodiment 1 of this application; Figure 3 This is a schematic diagram of the cable installation from the front view in Embodiment 1 of this application; Figure 4 This is a structural schematic diagram of the cable room from another angle in Embodiment 1 of this application; Figure 5 This is a schematic diagram of the triangular block structure in Embodiment 1 of this application; Figure 6 This is a schematic diagram of the triangular block from another angle in Embodiment 1 of this application; Figure 7 For this Figure 6 Enlarged structural diagram at point A; Figure 8 This is a schematic diagram of the structure of the re-monitoring component in Embodiment 1 of this application; Figure 9 This is a structural schematic diagram of the monitoring component from another angle in Embodiment 1 of this application; Figure 10 for Figure 9 Enlarged structural diagram at point B; Figure 11 This is a flowchart illustrating the alarm process of the alarm monitoring unit in this application.

[0018] In the diagram: 100, switchgear body; 10, busbar contact; 20, cable compartment; 1, monitoring and alarm unit; 11, preliminary alarm assembly; 111, first temperature sensor; 112, first alarm; 13, preliminary cooling component; 131, triangular block; 132, slide rail; 133, first moving column; 134, first sprinkler head; 12, secondary alarm assembly; 14, secondary monitoring component; 141, triangular track; 142, toothed groove; 143. 144. Moving gear; 145. Monitoring plate; 146. Second temperature sensor; 147. Second alarm; 15. Second cooling component; 151. Recurved track; 152. Second moving column; 153. Second spray head; 154. Limiting block; 155. Elastic component; 156. Guide surface; 16. Blocking component; 161. First electromagnetic block; 162. Sliding groove; 163. Second electromagnetic block; 3. Cutting component; 31. Half gear; 32. Cutting knife. Detailed Implementation

[0019] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0021] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in the specification of this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0022] This application discloses a switchgear with monitoring and alarm functions. A first temperature sensor 111 monitors the cable compartment 20 as a whole. When the temperature is high, a first spray head 134 cools the interior. If the temperature cannot be lowered, a control motor drives a moving gear 143 along a triangular track 141 to individually inspect the busbar contact 10 and further cool the location of the busbar contact 10. If the temperature still cannot be lowered, a half-gear 31 drives a cutting blade 32 to cut the cable connected to the busbar contact 10. This solves the problem that existing busbar contacts 10, after long-term use within the switchgear body 10, age and cause overheating, leading to safety hazards that cannot be identified and blocked in time. This achieves real-time monitoring of heat sources within the switchgear body 100 while accurately locating and cutting off the problematic busbar contact 10 cable.

[0023] To better understand the above technical solution, the following will provide a detailed explanation of the above technical solution in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1-4 and Figure 11This embodiment provides a switchgear with monitoring and alarm functions, including a switchgear body 100 and busbar contacts 10 installed inside the switchgear body 100. It also includes a cable compartment 20 electrically connected to the busbar contacts 10 via cables. A monitoring and alarm unit 1 is provided on the top of the switchgear body 100 near the busbar contacts 10. The monitoring and alarm unit 1 is used to monitor the temperature inside the switchgear body 100 in real time and issue an alarm. The monitoring and alarm unit 1 includes a preliminary alarm component 11 located inside the cable compartment 20. The outer side of the preliminary alarm component 11 is provided with... The re-alarm component 12 is used to check and cool down the busbar contacts 10 one by one. The preliminary alarm component 11 includes a first temperature sensor 111 installed in the cable chamber 20. The first temperature sensor 111 is used to monitor the temperature in the cable chamber 20. The first temperature sensor 111 is electrically connected to a first alarm 112. The first alarm 112 is used to alarm the temperature in the cable chamber 20. A preliminary cooling component 13 is installed in the cable chamber 20. The preliminary cooling component 13 is used to uniformly cool down the space in the cable chamber 20.

[0025] It is understandable that the busbar contact 10 is generally connected to the external three-phase cable, so the number of busbar contacts 10 is generally three. Optionally, the three busbar contacts 10 are arranged at equal intervals. In addition, the cable chamber 20 is an enclosed space used to place the busbar contacts 10 and connect them to the cable, which is existing technology and will not be described in detail here.

[0026] The first alarm 112 monitors the overall temperature inside the cable compartment 20. During the monitoring process, the cable compartment 20 is cooled down in a timely manner. If the cooling process still cannot solve the problem, the second alarm component 12 is controlled to alarm the cable compartment 20. The two alarm sounds can be used to distinguish the problem inside the switch cabinet body 100, and can provide intuitive feedback to the monitoring personnel.

[0027] Reference Figure 3-4 and Figure 5-6 The initial cooling component 13 is provided in two sets, which are symmetrically arranged about the three busbar contacts 10, that is, about the middle busbar contact 10. The initial cooling component 13 includes a triangular block 131 fixedly installed in the cable chamber 20. The triangular block 131 is located at the top of the busbar contact 10, and a slide rail 132 is provided on the triangular block 131. A first moving column 133 is slidably connected in the slide rail 132. The first moving column 133 is driven by a first power device, preferably a cylinder. The telescopic end of the cylinder is movably connected to the first moving column 133. A first spray head 134 is fixedly connected to the first moving column 133. The first spray head 134 is used to spray cooling gas to cool the inside of the cable chamber 20.

[0028] When the first temperature sensor 111 detects that the temperature inside the cable chamber 20 is high, it transmits this electrical signal to the controller. The controller can then activate the cylinder, causing the cylinder to push the first moving column 133. The first moving column 133 runs along the slide rail 132 inside the triangular block 131, and the shape of the slide rail 132 is the same as that of the triangular block 131. This allows the first spray head 134 to circulate along the slide rail 132, thereby circulating and cooling the cable chamber 20.

[0029] It should be noted that the first spray head 134 is connected to a cooling gas. The box containing the cooling gas can be placed inside the switch cabinet body 100 and turned on when in use to facilitate cooling of the cable compartment 20.

[0030] Reference Figure 8-9 , Figure 10-11 The re-monitoring component 14 includes a triangular track 141 equidistantly located outside the triangular block 131, and a toothed groove 142 is provided inside the triangular track 141. A moving gear 143 is meshed in the toothed groove 142. The moving gear 143 is driven by a second power device to move along the trajectory of the triangular track 141. The second power device is preferably a motor, and a limit plate is installed on the motor. A limit groove is opened between the limit plate and the triangular track 141 so that the motor can be restricted to running along the same trajectory as the triangular track 141. The moving gear 143 is coaxially connected to a monitoring plate 144, and a second temperature sensor 145 is provided on the monitoring plate 144. The second temperature sensor 145 is electrically connected to a second alarm 146. A cutting component 3 is provided on one side of the cable connected to the busbar contact 10. The cutting component 3 is used to cut off the cable connected to the abnormal busbar contact 10.

[0031] Specifically, when the first alarm 112 sounds, the first spray head 134 can be immediately activated to uniformly cool the cable chamber 20. Once the temperature drops, the alarm can be stopped. If the temperature fails to drop and continues to rise, the first temperature sensor 111 transmits its electrical signal to the controller. The controller then starts the motor, driving the moving gear 143 to move along the tooth groove 142. During this movement, the monitoring plate 144 moves along with it, causing the second temperature sensor 145 to move as well. The bottom of the triangular track 141 is aligned with the busbar contact 10. When the second temperature sensor 145 reaches the bottom of the triangular track 141, it contacts the cable connection of the busbar contact 10, allowing for individual monitoring of the busbar contact 10. When the temperature is too high, the movement stops, and the second alarm 146 sounds, causing two alarm sounds to be emitted inside the switch cabinet body 100. This not only alerts the operators but also allows for the identification of faults in the switch cabinet body 100 through the two alarm sounds.

[0032] Reference Figure 4-6 and Figure 11 The cooling component 15 includes a loop track 151 located at the bottom of the triangular block 131. A second moving column 152 is slidably connected inside the loop track 151. The second moving column 152 is driven by a third power device, preferably a cylinder. The second moving column 152 is connected to a second spray head 153, which is used to cool the busbar contact 10 by cyclically moving along the loop track 151.

[0033] Specifically, when the second temperature sensor 145 moves to the location where the bus contact 10 malfunctions and stops moving, the control cylinder drives the second moving column 152 to move along the loop track 151, so that the second moving column 152 can drive the second spray head 153 to circulate in the loop track 151. The loop track 151 is connected end to end and parallel to the bus contact 10, so that the upper second spray head 153 can maximize the cooling of the temperature around the bus contact 10.

[0034] Reference Figure 7 Both the slide rail 132 and the loop track 151 are equipped with limiting blocks 154. An elastic element 155 is provided on one side of each limiting block 154, and the elastic element 155 is fixedly connected to the triangular block 131. The limiting block 154 is positioned within the slide rail 132 and the loop track 151 through elastic deformation. A guide surface 156 is provided on the side of the limiting block 154 away from the elastic element 155. The limiting block 154 ensures that the first moving column 133 and the second moving column 152 do not deviate from their intended path during movement, allowing them to run along a trajectory that maximizes cooling within the switch cabinet body 100. The guide surface 156 allows them to move along the corresponding path; otherwise, they cannot move. Optionally, the guide surface 156 has an arc-shaped structure.

[0035] In some alternative embodiments, refer to Figure 10 The blocking component 16 includes a first electromagnetic block 161 mounted on the monitoring plate 144, a sliding groove 162 mounted on the bus contact 10, a second electromagnetic block 163 slidably connected in the sliding groove 162, the first electromagnetic block 161 and the second electromagnetic block 163 repel each other, and a switch is provided at the end of the sliding groove 162 away from the second electromagnetic block 163. The cutting component 3 includes a half gear 31 located at the top of the sliding groove 162, and the half gear 31 is provided in two sets, which are meshed with each other. A cutting blade 32 is coaxially connected to the half gear 31. The cutting blade 32 is used to cut the cable connected to the busbar contact 10.

[0036] When the second temperature sensor 145 moves to a position where the busbar contact 10 has a higher temperature, it stops moving. At this time, the first electromagnetic block 161 on the monitoring board 144 and the second electromagnetic block 163 in the sliding groove 162 generate a repulsive force, and the magnetic force of the first electromagnetic block 161 is greater than that of the second electromagnetic block 163. This causes the second electromagnetic block 163 to move along the sliding groove 162 away from the first electromagnetic block 161. When it moves and touches the switch, it controls the two sets of half gears 31 to rotate in opposite directions, thereby causing the cutting blade 32 to cut the cable connected to the busbar contact 10, thus reducing the safety hazards caused by the busbar contact 10 due to a fault.

[0037] It should be noted that if more than one busbar contact 10 has a problem, after the cable of the first busbar contact 10 is cut off under the monitoring of the second temperature sensor 145, the device can continue to move forward. If a busbar contact 10 with an excessively high temperature is encountered during the movement, it will continue to be cut off until the fault of any busbar contact 10 is eliminated.

[0038] How this application works: First alarm: When the temperature in the cable chamber 20 is too high, the first temperature sensor 111 detects the high temperature and transmits its electrical signal to the controller. The controller controls the first alarm 112 to sound an alarm and can also drive the cylinder to start, causing the first moving column 133 to move along the sliding groove 162 of the triangular block 131, so that the first spray head 134 can uniformly cool down the space in the cable chamber 20. If the temperature drops, the first alarm 112 stops sounding; if the temperature does not drop, the first alarm 112 continues to sound an alarm.

[0039] Second alert: When the first alarm 112 continues to alarm, the motor is started, causing the moving gear 143 to run along the triangular track 141. As the monitoring plate 144 moves with the moving gear 143, it monitors each busbar contact 10. When the second temperature sensor 145 detects that the temperature is too high, it can not only cool the busbar contact 10 with the second spray head 153, but also, if it cannot cool the temperature, it can also cut the cable connected to the busbar contact 10 by rotating the half gear 31 and cutting the cable through the cutting blade 32. This allows for monitoring of each busbar contact 10 and cutting off the cable that poses a safety hazard.

[0040] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0041] The above are merely preferred embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A switchgear with monitoring and alarm functions, comprising a switchgear body (100) and busbar contacts (10) installed within the switchgear body (100), characterized in that, Also includes: Cable compartment (20), which is electrically connected to busbar contact (10) via cable; Monitoring and alarm unit (1), the monitoring and alarm unit (1) is located on the top of the switch cabinet body (100) near the bus contact (10), and is used to monitor the temperature inside the switch cabinet body (100) in real time and issue an alarm; The monitoring and alarm unit (1) includes: A preliminary alarm component (11) is installed in the cable room (20) to monitor the temperature inside the switch cabinet body (100) and alarm it while cooling it down. The alarm component (12) is used to check the positions of the bus contacts (10) one by one and cool them down. The preliminary alarm component (11) includes: The first temperature sensor (111) is located inside the cable chamber (20) and is used to monitor the temperature inside the cable chamber (20); The first alarm (112) is electrically connected to the first temperature sensor (111) for alarming the temperature of the cable chamber (20); A preliminary cooling component (13) is provided inside the cable chamber (20) to uniformly cool the space inside the cable chamber (20); The preliminary cooling component (13) is provided in two sets, and the two sets of the preliminary cooling component (13) are symmetrically arranged about the busbar contact (10) in the middle position; The preliminary cooling component (13) includes: Triangular block (131), the triangular block (131) is located on the top of the busbar contact (10), and a slide (132) is provided on the triangular block (131). The first movable column (133) is slidably connected in the slide rail (132) and is driven by the first power device. The first spray head (134) is connected to the first movable column (133) and is used to spray cooling gas to cool the inside of the cable chamber (20).

2. A switch cabinet with monitoring and alarm function as described in claim 1, characterized in that, The re-alarm component (12) includes: The re-monitoring component (14) is located on the outside of the triangular block (131) and is used to check the busbar contacts (10) one by one and issue an alarm. The secondary cooling component (15) is located at the bottom of the triangular block (131) and is used to cyclically cool the busbar contact (10).

3. A switch cabinet with monitoring and alarm function as described in claim 2, characterized in that, The re-monitoring component (14) includes: A triangular track (141) is equidistantly disposed outside the triangular block (131), and the triangular track (141) is provided with a toothed groove (142). The moving gear (143) meshes with the tooth groove (142) and is driven by the second power device to move along the trajectory of the triangular track (141). The monitoring board (144) is coaxially connected to the moving gear (143), and the monitoring board (144) is provided with a second temperature sensor (145), which is electrically connected to a second alarm (146).

4. A switch cabinet with monitoring and alarm function as described in claim 2, characterized in that, The secondary cooling component (15) includes: A loop track (151) is provided at the bottom of the triangular block (131); The second movable column (152) is slidably connected in the loop track (151), and the second movable column (152) is driven by the third power device; The second spray head (153) is connected to the second moving column (152) and is used to cool the busbar contact (10) by moving cyclically along the loop track (151).

5. A switch cabinet with monitoring and alarm function as described in claim 4, characterized in that, Both the slide (132) and the loop track (151) are provided with limiting blocks (154). One side of the limiting block (154) is provided with an elastic element (155). The elastic element (155) achieves the limiting of the limiting block (154) in the slide (132) and the loop track (151) through elastic deformation.

6. A switch cabinet with monitoring and alarm function as described in claim 5, characterized in that, The limiting block (154) has a guide surface (156) on the side away from the elastic member (155).

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