A modular insulation guard for exposed electrical distribution and control cabinets

Abstract

The utility model provides a kind of modular insulation protection device for bare distribution cabinet and control cabinet, including main body protection unit, fastener mechanism and fixed mechanism;The rear end of the main body protection unit is connected with the fixed mechanism by the fastener mechanism;The fixed plate is used to be fixed in the electric control cabinet body inner side wall, the fastener mechanism can be cooperated with the fixed mechanism to realize the installation and disassembly of main body protection unit.The utility model can provide effective physical protection, adapt to different cabinet layout, take into account safety and inspection maintenance convenience, improve equipment operation stability.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment accessories technology, specifically a modular insulation protection device for exposed distribution cabinets and control cabinets. Background Technology

[0002] Pump room control cabinets and distribution cabinets are important components of corridor fire protection systems. Regular inspections and checks on the water pumps' normal operation require operating the distribution cabinets and control cabinets. During the process of toggling the switches, it is very easy to slip and accidentally touch live equipment, causing an electric shock accident.

[0003] The following safety hazards are commonly found in existing power distribution control equipment: 1. Exposed conductive parts lack effective physical isolation during live maintenance; 2. Traditional protective devices have problems such as complex disassembly and assembly procedures and poor reusability; 3. Fixed protective structures affect daily equipment inspection and maintenance; 4. Non-standardized design makes it difficult to replace spare parts; 5. Existing full-coverage baffles affect switch start-up and shutdown and daily maintenance.

[0004] Therefore, based on the actual working conditions on site, a modular insulation protection device for exposed distribution cabinets and control cabinets is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a modular insulation protection device for exposed power distribution cabinets and control cabinets to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a modular insulation protection device for exposed distribution cabinets and control cabinets, comprising a main protection unit, a fastening mechanism, and a fixing mechanism; the rear end of the main protection unit is connected to the fixing mechanism through the fastening mechanism; the fixing plate is used to fix the inner side wall of the control cabinet, and the fastening mechanism can cooperate with the fixing mechanism to realize the installation and disassembly of the main protection unit.

[0007] Preferably, the main protective unit is a U-shaped baffle body made of high-strength insulating material; the high-strength insulating material is polycarbonate, and the main protective unit is injection molded from polycarbonate.

[0008] Preferably, the fastening mechanism has a T-shaped cross-section, and an electromagnetic coil is provided inside the lower end of the fastening mechanism. The magnetism of the electromagnetic coil is controlled by a switch provided on the front side panel of the main protective unit.

[0009] Preferably, the fixing mechanism is integrally cast from ferromagnetic metal and includes a fixing plate and multiple fixing grooves; the fixing grooves are vertically and equidistantly arranged in the middle of one side wall of the fixing plate, and the fixing plate has through holes at its ends.

[0010] Preferably, the main protective unit has an inspection window in the middle of the front side wall. The inspection window is made of transparent material and has an anti-fog coating. The two ends of the inspection window are connected to the main protective unit by hinges.

[0011] Preferably, a ventilation fan is provided on the front wall of the main protective unit on both sides of the inspection window, and the ventilation fan is controlled to start and stop by a temperature sensor.

[0012] Preferably, the switch controls the electromagnetic coil via a circuit pre-embedded in the side wall of the main protective unit.

[0013] Preferably, the fixing plate is fixed to the inner side wall of the electrical control cabinet by bolts passing through the through hole.

[0014] Preferably, the inspection window has a large opening angle and good sealing performance when closed.

[0015] Preferably, the ventilation fan automatically turns on when the temperature inside the cabinet exceeds a set threshold; and automatically turns off when the temperature inside the cabinet drops to a safe range.

[0016] The present invention has the following beneficial effects: 1. In this utility model, the main protective unit, through its U-shaped structure, can effectively resist external collisions and impacts, providing reliable physical protection for the internal components of the electrical control cabinet; 2. The fixing mechanism in this utility model is integrally cast from ferromagnetic metal. Its multiple vertically equidistant fixing slots can be adapted to the internal layout of electrical control cabinets of different sizes, making it convenient to adjust the installation height of the protection unit. 3. In this utility model, the plate is fixed to the inner wall of the electrical control cabinet by bolts passing through the through holes at the end of the fixing plate. This installation method is simple to operate and can be quickly completed during disassembly and maintenance, effectively improving installation efficiency and flexibility. 4. In this utility model, when the main protective unit needs to be installed, the protrusion at the lower end of the fastener mechanism is inserted into the slot of the fixing groove, the electromagnetic coil is turned on, and the magnetic force is used to attract it to the fixing mechanism to achieve quick and accurate positioning and connection; when disassembling, the electromagnetic coil is turned off, and it can be easily removed without complicated tools, which greatly improves the convenience of installation and maintenance. 5. The insulated main protective unit and electromagnetic connection method in this utility model not only ensure the electrical safety inside the electrical control cabinet, but also avoid the risk of protection failure caused by loosening of traditional mechanical connections; 6. The transparent inspection window with anti-fog coating provided in the middle of the front side wall of the main protective unit in this utility model allows the operator to clearly observe the operating status of the internal components of the electrical control cabinet without opening the protective unit. The anti-fog coating avoids fogging caused by temperature difference and ensures clear visibility. 7. In this utility model, the inspection window is connected by a hinge, which allows for a large opening angle, making it convenient for staff to go inside for inspection and adjustment. When closed, it has good sealing performance, maintains the protective effect, and reduces the wear and tear on the protective unit structure caused by frequent disassembly. 8. The ventilation fan in this invention is controlled by a temperature sensor to achieve intelligent heat dissipation management. When the temperature inside the electrical control cabinet exceeds a set threshold, the ventilation fan automatically turns on to accelerate air circulation and remove heat in a timely manner, preventing component performance degradation or malfunction due to high temperatures. Once the temperature drops to a safe range, the ventilation fan automatically turns off, reducing energy consumption and noise. This intelligent heat dissipation mechanism effectively ensures the stable operation of components inside the electrical control cabinet and extends the equipment's service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main protective unit and fastening mechanism of this utility model; Figure 2 This is a schematic diagram of the fixing mechanism of this utility model; Figure 3 This is a schematic diagram of the fastener mechanism of this utility model; Figure 4 This is a schematic diagram of the control logic of the electromagnetic coil of this utility model; Figure 5 This is the start / stop control logic diagram for the ventilation fan of this utility model. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Please see Figure 1-5 This utility model discloses a modular insulation protection device for exposed power distribution cabinets and control cabinets, including a main protection unit 1, a fastening mechanism 2, and a fixing mechanism 3. The specific structure and connection relationship of each component are as follows: The specific structure and installation method of the fixing mechanism 3: The fixing mechanism 3 is made of ferromagnetic metal such as iron-nickel alloy through an integral casting process. It is rectangular plate in shape. Its structure includes a fixing plate 3.1 and five fixing slots 3.2 vertically and equidistantly arranged along the middle of one side wall of the fixing plate 3.1. The fixing plate 3.1 is 80cm long, 12cm wide, and 2cm thick. The fixing slots 3.2 are rectangular grooves with a depth of 6cm and a width of 4cm. The distance between two adjacent fixing slots 3.2 is 8cm to accommodate the internal layout of electrical control cabinets of different sizes.

[0019] The fixing plate 3.1 has a through hole 3.3 with a diameter of 9mm at each end. During installation, the fixing plate 3.1 is fitted against the preset installation position on the inner side wall of the electrical control cabinet. An M8 stainless steel bolt is passed through the through hole 3.3 and threaded into the preset threaded hole on the inner side wall of the electrical control cabinet. The bolt is tightened to ensure that the fixing plate 3.1 is tightly fitted to the cabinet side wall, thus completing the installation of the fixing mechanism 3. The tightening torque of the M8 stainless steel bolt is 22±3N・m, and the thickness of the cabinet side wall is ≥2.5mm to ensure installation strength. The fit clearance between the bolt and the through hole 3.3 is 0.2mm. A GB / T 93-1987 spring washer with a specification of 8mm is installed at the through hole to prevent loosening. After installation, the fit clearance between the fixing plate 3.1 and the cabinet side wall is ≤0.5mm. This installation method is simple to operate and facilitates subsequent disassembly and maintenance.

[0020] The specific structure of the main protective unit 1: The main protective unit 1 is a U-shaped baffle body, made of high-strength insulating polycarbonate through injection molding. Its thickness is 1.2cm. The opening of the U-shaped structure faces the inner wall of the electrical control cabinet. The overall dimensions are 100cm long, 40cm wide, and 60cm high. It can effectively resist external collisions and impacts, providing reliable protection for the internal components of the electrical control cabinet. The polycarbonate used is a special type for electrical equipment, such as commercially available PC 121R. Its insulation strength is ≥15kV / mm, ensuring compliance with GB / T 1408.1-2016 "Test Method for Electrical Strength of Insulating Materials". The flame retardant rating reaches UL94V0 level, the light transmittance is ≥90% to ensure clear inspection and observation, and the heat resistance temperature is ≥130℃ to ensure adaptability to the high-temperature environment inside the cabinet, meeting the requirements for electrical equipment sheets in GB / T 11942-2015 "Polycarbonate Sheets".

[0021] The main protective unit 1 has an inspection window 1.1 in the middle of the front side wall. The inspection window 1.1 is made of transparent polycarbonate board with a length of 40cm and a width of 25cm. Its surface is coated with a nano-silica anti-fog coating, which can prevent fogging caused by the temperature difference between the inside and outside of the cabinet and ensure that the operator can clearly observe the operating status of the internal components without opening the protective unit. The inspection window 1.1 is hinged to the main protective unit 1 at both ends by 304 stainless steel hinges. The hinges can rotate up to 120°, facilitating personnel to access the cabinet for inspection and adjustment. The edges of the inspection window 1.1 are equipped with rubber sealing strips, ensuring a good seal when closed and guaranteeing protective effectiveness. The main protective unit is compatible with common power distribution cabinet / control cabinet specifications: width 60-120cm, depth 30-80cm, height 100-200cm. Through modular design, U-shaped baffles of different lengths can be replaced, such as 80cm, 100cm, and 120cm. The baffle length matches the cabinet width; replacement only requires replacing the main protective unit body, and the fastening and fixing mechanisms are interchangeable. The rubber sealing strips on the edges of the inspection window are made of temperature-resistant silicone rubber with a Shore hardness of 60±5, resistant to temperatures from -40℃ to 200℃, with a 5mm diameter circular cross-section, embedded in a 3mm deep mounting groove on the edge of the inspection window. Two 304 stainless steel hinges are used. Each hinge is secured with an M3×8mm self-tapping screw, and the hinge shaft is coated with silicone-based grease to ensure a smooth 120° opening angle without jamming.

[0022] On the front wall of the main protective unit 1 on both sides of the inspection window 1.1, there is a ventilation fan 1.2. The ventilation fan 1.2 is a small axial flow fan with a diameter of 12cm, a power of 8W, and an air volume of 120m³ / h. It is electrically connected to a DS18B20 digital temperature sensor embedded in the inner wall of the main protective unit 1. The temperature sensor has a measurement range of -55℃ to 125℃, a preset temperature threshold of 40℃, and a safety range of 30℃ and below. When the temperature inside the cabinet exceeds 40℃, the temperature sensor sends a signal to control the ventilation fan 1.2 to automatically turn on; when the temperature drops to 30℃ or below, the ventilation fan 1.2 automatically turns off, achieving intelligent heat dissipation. The DS18B20 temperature sensor is installed 5cm below the center of the inner wall of the main protective unit, 5-10cm away from the main heat-generating components inside the cabinet. Temperature judgment is achieved through an STM32F103 microcontroller. The program logic is: real-time temperature reading → if >40℃, output a high level to trigger the relay; if ≤30℃, output a low level to disconnect the relay. The relay model is SRD-05VDC-SL-C, which controls the power supply of the ventilation fan. The power supply is a removable battery, located on the rear side wall of the main protective unit, and connected to each component through wiring pre-embedded inside the main protective unit.

[0023] The specific structure and connection relationship of the fastening mechanism 2: The fastening mechanism 2 has a T-shaped cross-section and is made of high-strength ABS plastic. The lower end of the T-shaped fastening mechanism can be designed with a length of 5.8cm × width of 3.8cm × height of 5cm, which is compatible with the dimensions of the fixing groove, which is 6cm deep and 4cm wide. The fitting clearance is 0.1-0.2cm to ensure that the protrusion can be smoothly inserted into the groove without radial loosening. The end of the protrusion is rounded with a radius of 0.5cm to avoid jamming during insertion. A DC12V miniature electromagnetic coil with a rated current of 0.5A is embedded in its lower end. The upper end of the fastening mechanism 2 is fixedly connected to the rear end of the main protective unit 1 by M4 bolts. The connection line of the electromagnetic coil is embedded in the side wall of the main protective unit 1. The other end of the line is connected to the rocker switch 1.3 with a rated current of 1A, which is set on the front side panel of the main protective unit 1. The on and off of the electromagnetic coil is controlled by the switch 1.3.

[0024] When the main protective unit 1 needs to be installed, close switch 1.3 to connect the pre-embedded wiring, energize the electromagnetic coil to generate magnetic force, align the T-shaped fastener mechanism 2 with the fixing groove 3.2 on the fixing mechanism 3 and bring it close. It will be attracted to the fixing mechanism 3 by magnetic force to achieve quick positioning and connection. When disassembly is required, turn off switch 1.3, de-energize the electromagnetic coil, and the magnetic force will disappear. The main protective unit 1 can then be directly removed from the fixing mechanism 3 without additional tools.

[0025] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A modular insulation protection device for exposed distribution cabinets and control cabinets, characterized in that, It includes a main protective unit (1), a fastening mechanism (2) and a fixing mechanism (3); the rear end of the main protective unit (1) is connected to the fixing mechanism (3) through the fastening mechanism (2); the fixing mechanism (3) is used to fix it to the inner side wall of the electrical control cabinet, and the fastening mechanism (2) can cooperate with the fixing mechanism (3) to realize the installation and disassembly of the main protective unit (1).

2. A modular insulation protection device for exposed distribution cabinets and control cabinets according to claim 1, characterized in that, The main protective unit (1) is a U-shaped baffle body made of high-strength insulating material; the high-strength insulating material is polycarbonate, and the main protective unit (1) is injection molded from polycarbonate.

3. A modular insulation protection device for exposed distribution cabinets and control cabinets according to claim 1, characterized in that, The fastening mechanism (2) has a T-shaped cross section. An electromagnetic coil is provided at the lower end of the fastening mechanism (2). The magnetism of the electromagnetic coil is controlled by a switch (1.3) on the front side panel of the main protective unit (1).

4. A modular insulation protection device for exposed distribution cabinets and control cabinets according to claim 1, characterized in that, The fixing mechanism (3) is integrally cast from ferromagnetic metal and includes a fixing plate (3.1) and multiple fixing grooves (3.2); the fixing grooves (3.2) are vertically and equidistantly arranged in the middle of one side wall of the fixing plate (3.1), and the fixing plate (3.1) has through holes (3.3) at its end.

5. A modular insulation protection device for exposed distribution cabinets and control cabinets according to claim 1, characterized in that, The main protective unit (1) has an inspection window (1.1) in the middle of the front side wall. The inspection window (1.1) is made of transparent material and has an anti-fog coating. The two ends of the inspection window (1.1) are connected to the main protective unit (1) by hinges.

6. A modular insulation protection device for exposed distribution cabinets and control cabinets according to claim 5, characterized in that, A ventilation fan (1.2) is provided on the front wall of the main protective unit (1) on both sides of the inspection window (1.1), and the ventilation fan (1.2) is controlled to start and stop by a temperature sensor.

7. A modular insulation protection device for exposed distribution cabinets and control cabinets according to claim 3, characterized in that, The switch (1.3) controls the electromagnetic coil through a circuit embedded in the side wall of the main protective unit (1).

8. A modular insulation protection device for exposed distribution cabinets and control cabinets according to claim 4, characterized in that, The fixing plate (3.1) is fixed to the inner side wall of the electrical control cabinet by bolts passing through the through hole (3.3).

9. A modular insulation protection device for exposed distribution cabinets and control cabinets according to claim 5, characterized in that, The inspection window (1.1) has a large opening angle and good sealing performance when closed.

10. A modular insulation protection device for exposed distribution cabinets and control cabinets according to claim 6, characterized in that, When the temperature inside the cabinet exceeds the set threshold, the ventilation fan (1.2) will automatically turn on; when the temperature inside the cabinet drops to a safe range, the ventilation fan (1.2) will automatically turn off.

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