High-voltage metering load control cabinet

Abstract

The utility model discloses a high-voltage metering load control cabinet which comprises a control cabinet body, the interior of the control cabinet body is divided into an upper chamber and a lower chamber through a partition plate, the upper chamber and the lower chamber are both internally provided with electrical components through installation assemblies, the top end in the upper chamber is provided with a supporting plate, and the supporting plate is provided with a fire extinguishing mechanism. Heat dissipation holes are symmetrically formed in the two side walls of the lower cavity, plugging assemblies matched with the heat dissipation holes are further arranged in the lower cavity, and a cabinet door is hinged to the open end of the control cabinet body. The fire extinguishing device has the beneficial effects that when internal fire is monitored, fire extinguishing gas can be sprayed out in time to rapidly extinguish the internal fire, the fire can be extinguished in time, timely treatment can be carried out before workers and the like arrive at the scene, loss and the like caused by increase of the fire behavior are avoided, meanwhile, internal air is exhausted after fire extinguishing, plugging operation is carried out, and the fire extinguishing efficiency is improved. And the situation that external air enters the interior again to cause recombustion is prevented, and safety is ensured.

Description

Technical Field

[0001] The utility model relates to the field of control cabinets, in particular to a high-voltage metering load control cabinet. Background Art

[0002] With the continuous progress of modern science and technology, my country's power supply system has fully promoted the use of prepaid electricity. High-voltage metering load control cabinet is an important means to realize the transformation of production enterprises to the power purchase system (that is, buying electricity first and then using it). It can not only control the occurrence of arrears, but also reduce the operating risks of power supply enterprises and promote the standardized operation of the power market. In order to improve safety and reduce costs, a high-voltage metering load control cabinet is proposed.

[0003] For example, the high-voltage metering load control cabinet disclosed in Chinese patent CN215816904U has high-voltage protection current transformer, comprehensive protection device, live display II, high-voltage sensor II and other components installed in the lifting cabinet, upper isolating knife, vacuum circuit breaker, metering current transformer, metering voltage transformer, high-voltage sensor I and grounding knife and other components installed in the power special metering cabinet, the metering room door and metering cabinet door are double sealed by lead column and electromagnetic lock, and an operation control door is also set on one side of the metering room door. It has the advantages of reasonable structure, convenient maintenance, safety and reliability, accurate measurement, prevention of electricity theft, and avoidance of arrears, and has a wide range of promotion and application value.

[0004] However, there are certain defects in its current use. Since there are many electrical components installed inside, after long-term use, it may catch fire due to line aging, overload, etc., and can only passively rely on external fire alarm equipment and personnel monitoring. This method prolongs the response time of fire extinguishing in the control cabinet, promotes the fire and increases the serious damage to the control cabinet. Utility Model Content

[0005] The purpose of the utility model is to provide a high-voltage metering load control cabinet to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-voltage metering load control cabinet comprises a control cabinet body, which is divided into an upper chamber and a lower chamber by a partition, and electrical components are arranged in the upper chamber and the lower chamber through mounting components, a support plate is arranged on the top of the upper chamber, and a fire extinguishing mechanism is arranged on the support plate, heat dissipation holes are symmetrically opened on both side walls of the lower chamber, and a plugging component matching the heat dissipation holes is also arranged in the lower chamber, and a cabinet door is hinged at the open end of the control cabinet body.

[0008] Furthermore, in order to facilitate the assembly of electrical components and to facilitate their removal for subsequent maintenance and other operations, the installation assembly includes a mounting frame arranged in the upper chamber and the lower chamber, on which a mounting slider is slidably provided, and the electrical components are fixed between the two mounting sliders in the same horizontal direction.

[0009] Furthermore, in order to observe the internal situation, an observation port is embedded in the cabinet door.

[0010] Furthermore, in order to extinguish the fire in time and prevent the fire from growing, the fire extinguishing mechanism includes a gas cylinder symmetrically arranged on the support plate, and an air outlet pipe is provided at the output end of the gas cylinder. The air outlet pipe passes through the support plate and extends to the bottom where nozzles are equidistantly arranged.

[0011] Furthermore, in order to monitor the internal situation and promptly detect and extinguish a fire when it occurs, the fire extinguishing mechanism also includes temperature sensors symmetrically arranged on the side walls of the mounting frame, and smoke sensors are provided at the top of the upper chamber and the lower chamber.

[0012] Furthermore, in order to facilitate the exhaust of internal air during fire extinguishing, air holes are evenly spaced on the partition, and the upper chamber and the lower chamber are connected through the air holes.

[0013] Furthermore, in order to generate an alarm in case of abnormal circumstances, an alarm is fixedly provided on the top of the control cabinet body.

[0014] Furthermore, in order to seal the heat dissipation holes after the fire is extinguished to prevent outside air from entering the interior and prevent re-ignition, the sealing assembly includes electric push rods symmetrically arranged on the two side walls of the lower chamber, and the output ends of the two electric push rods on the same side are jointly provided with a sealing plate, which matches the heat dissipation holes.

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

[0016] (1) Through the fire extinguishing mechanism and the blocking component, when an internal fire is detected, the fire extinguishing gas can be sprayed in time to quickly extinguish the internal fire. The fire can be extinguished in time and handled in time before the staff arrives at the scene to avoid the increase of the fire and cause losses. At the same time, after the fire is extinguished, the internal air is discharged and blocked to prevent the outside air from entering the interior again and causing the fire to re-ignite, thus ensuring safety;

[0017] (2) The installation components provided can be used to conveniently install and fix the electrical components in the control cabinet body. They can be assembled separately and can be removed when a fault occurs and needs to be repaired or replaced. This makes it easier for the staff to repair or replace the components without having to reach into the control cabinet body, which is more convenient and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a high-voltage metering load control cabinet when it is opened according to an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a high-voltage metering load control cabinet when it is closed according to an embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the internal structure of a high-voltage metering load control cabinet according to an embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of an upper chamber in a high-voltage metering load control cabinet according to an embodiment of the utility model;

[0023] Figure 5 It is a partial structural schematic diagram of a lower chamber in a high-voltage metering load control cabinet according to an embodiment of the utility model.

[0024] Reference numerals:

[0025] 1. Control cabinet body; 2. Cabinet door; 3. Observation port; 4. Support plate; 5. Alarm; 6. Gas cylinder; 7. Partition; 8. Heat dissipation hole; 9. Electrical components; 10. Upper chamber; 11. Lower chamber; 12. Mounting frame; 13. Air vent; 14. Sealing plate; 15. Exhaust pipe; 16. Nozzle; 17. Smoke sensor; 18. Temperature sensor; 19. Mounting slider; 20. Electric push rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5According to an embodiment of the utility model, a high-voltage metering load control cabinet comprises a control cabinet body 1, the interior of which is divided into an upper chamber 10 and a lower chamber 11 by a partition 7, wherein the upper chamber 10 can be a lifting cabinet (the electrical components 9 inside are mainly high-voltage protection current transformers, high-voltage sensors, comprehensive protection devices and live displays, etc.), and the lower chamber 11 is a special power metering cabinet (the electrical components 9 inside are main busbar room, metering room, instrument room, vacuum circuit breaker, metering current transformer, metering voltage transformer, high-voltage sensor, etc.), and thus can be It is an important means for manufacturing enterprises to switch to the electricity purchasing system (i.e. purchasing electricity first and then using it) when in use. It can not only control the occurrence of arrears, but also reduce the operating risks of power supply companies. It is a relatively mature technology and will not be described in detail here. The opening end of the control cabinet body 1 can be hinged with a cabinet door 2 through a hinge, and an operating control device can be embedded on its outer wall (to facilitate the operation of the electrical components 9 in the control cabinet body 1, etc., which is a relatively mature technology and will not be described in detail here), and an observation port 3 is also embedded in the cabinet door 2 to facilitate observation of the internal situation.

[0028] See also Figure 1-Figure 5 In order to ensure safety during use, when a fire occurs due to aging of the line or other reasons after long-term use, the fire extinguishing operation can be carried out before the staff arrives at the scene to avoid further expansion of the fire, reduce losses and improve safety. A support plate 4 is welded inside the upper chamber 10, and two groups of gas cylinders 6 of the fire extinguishing mechanism are arranged on the support plate 4 (the inside can be common fire extinguishing gas, compressed carbon dioxide, etc., which are arranged according to actual conditions), and the output end is connected to the outlet pipe 15 (with an electric control valve on it, which is connected to the operation on the cabinet door 2 The control device is electrically connected and can be opened in case of fire), the air outlet pipe 15 penetrates the support plate 4 and extends to the bottom, where nozzles 16 are arranged equidistantly and obliquely, so that the gas in the gas cylinder 6 can be conveniently ejected, and the partition plate 7 is provided with air holes 13, so that the gas can enter the lower chamber 11 through the air holes 13 when ejecting the gas, and then the internal air is discharged through the heat dissipation holes 8 opened in the lower chamber 11, and the corresponding upper chamber 10 and lower chamber 11 are provided with heat dissipation devices (which can be heat dissipation fans, which cooperate with the heat dissipation holes 8 and air holes 13 for ventilation and heat dissipation);

[0029] In order to monitor the temperature and other conditions in the upper chamber 10 and the lower chamber 11, a temperature sensor 18 is installed on the internal mounting frame 12, and a smoke sensor 17 is installed on the internal top of the chamber. Both are electrically connected to the operating control device on the cabinet door 2, which can facilitate the monitoring of internal temperature and other conditions. When a fire occurs, it can be discovered in time and then the fire extinguishing mechanism can be controlled to perform fire extinguishing operations. An alarm 5 (also electrically connected to the operating control device on the cabinet door 2) is also installed on the top of the control cabinet body 1, which can sound an alarm when a fire occurs. This is a relatively mature technology and will not be described in detail here. In addition, in order to prevent air from entering and reigniting after the fire is extinguished, electric push rods 20 of the sealing assembly are installed on both sides of the lower chamber 11 (electrically connected to the operating control device on the cabinet door 2), and a sealing plate 14 is installed on the output end of the electric push rod 20, which can seal the heat dissipation hole 8 after the fire is extinguished, thereby preventing outside air from entering the interior and preventing re-ignition.

[0030] See also Figure 1-Figure 5 In order to facilitate the installation of the electrical components 9 in the upper chamber 10 and the lower chamber 11 and the subsequent removal for inspection or replacement, a mounting frame 12 of the mounting assembly is installed inside the two chambers by bolts, and the mounting frame 12 is slidably provided with mounting sliders 19 in the horizontal direction (which can be two, three or four groups, etc., according to the number of electrical components 9, to facilitate their installation and assembly), and an assembly plate is welded between the two mounting sliders 19 in the same horizontal direction to facilitate the installation of the electrical components 9. For the mounting slider 19 and the mounting frame 12, after being pushed in for installation, a limiting device (such as the matching connection of a limiting rod and a limiting hole) can be provided between the two to prevent the mounting slider 19 from sliding during use.

[0031] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0032] In summary, with the aid of the above technical solution of the present invention, by pulling out the installation slider 19, the assembly plate can be conveniently removed, thereby facilitating the assembly of the electrical component 9. Similarly, it can also be pulled out during subsequent disassembly or maintenance to facilitate maintenance or replacement operations. After the installation is completed, it is pushed into the cabinet. Through the mutual cooperation of the electrical components 9, etc., it is an important means for the production enterprise to shift to the electricity purchase system (i.e., purchase electricity first and then use electricity). It can not only control the occurrence of arrears, but also reduce the operating risks of the power supply enterprise. The internal temperature sensor 18 and the smoke sensor 17 can monitor the internal situation. The fire extinguishing gas in the gas cylinder 6 is sprayed out through the nozzle 16 under the air outlet pipe 15, and the air vent 13 is used to quickly fill the upper chamber 10 and the lower chamber 11 with the fire extinguishing gas. At the same time, the internal air is discharged through the heat dissipation hole 8, thereby playing a role in extinguishing the fire. After the fire is extinguished, the electric push rod 20 moves the sealing plate 14 downward, thereby sealing the heat dissipation hole 8, thereby preventing the outside air from entering the interior and causing the fire to re-ignite, thereby ensuring the safety of the staff before they arrive at the scene. At the same time, the alarm 5 sounds an alarm in case of an emergency.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-voltage metering load control cabinet, comprising a control cabinet body (1), characterized in that: The control cabinet body (1) is divided into an upper chamber (10) and a lower chamber (11) by a partition (7), and the upper chamber (10) and the lower chamber (11) are both provided with electrical components (9) by means of mounting components. A support plate (4) is provided at the top of the upper chamber (10), and a fire extinguishing mechanism is provided on the support plate (4). Heat dissipation holes (8) are symmetrically provided on both side walls of the lower chamber (11), and a blocking component matching the heat dissipation holes (8) is also provided in the lower chamber (11). A cabinet door (2) is hingedly connected to the open end of the control cabinet body (1).

2. A high voltage metering load control cabinet according to claim 1, characterized in that: The mounting assembly comprises a mounting frame (12) arranged in an upper chamber (10) and a lower chamber (11), a mounting slide block (19) being slidably provided on the mounting frame (12), and the electrical component (9) being fixedly provided between two mounting slide blocks (19) in the same horizontal direction.

3. A high voltage metering load control cabinet according to claim 2, characterized in that: An observation port (3) is embedded in the cabinet door (2).

4. A high voltage metering load control cabinet according to claim 3, characterized in that: The fire extinguishing mechanism comprises a gas cylinder (6) symmetrically arranged on a support plate (4), an outlet pipe (15) being provided at an output end of the gas cylinder (6), the outlet pipe (15) penetrating the support plate (4) and extending to a position below which nozzles (16) are equidistantly arranged.

5. A high voltage metering load control cabinet according to claim 4, characterized in that: The fire extinguishing mechanism further comprises a temperature sensor (18) symmetrically arranged on a side wall of the mounting frame (12), and a smoke sensor (17) is arranged at the top end of each of the upper chamber (10) and the lower chamber (11).

6. A high voltage metering load control cabinet according to claim 5, characterized in that: The partition plate (7) is provided with air holes (13) at equal intervals, and the upper chamber (10) and the lower chamber (11) are connected via the air holes (13).

7. A high-voltage metering load control cabinet according to claim 6, characterized in that: An alarm (5) is fixedly provided on the top of the control cabinet body (1).

8. A high voltage metering load control cabinet according to claim 7, characterized in that: The blocking assembly comprises electric push rods (20) symmetrically arranged on two side walls of the lower chamber (11), and the output ends of the two electric push rods (20) on the same side are jointly provided with a blocking plate (14), and the blocking plate (14) matches the heat dissipation hole (8).

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