Energy-saving and environment-friendly low-voltage switchgear assembly

Abstract

The invention relates to the technical field of low-voltage switchgear sets, and discloses an energy-saving and environment-friendly low-voltage switchgear set, which comprises a cabinet body, one side of the cabinet body is rotatably connected with a cabinet door through a hinge, the outer wall of the cabinet door is provided with observation glass, the inner wall of a ventilator shell is provided with a plurality of brackets, one end of each bracket is provided with a motor, and the other end of each bracket is provided with a fan. A first adsorption net is arranged in the filtering frame, a synthetic fiber filtering net is arranged at the bottom end of the first adsorption net, the two ends of the synthetic fiber filtering net and the two ends of the activated carbon filtering net are located in the filtering frame, and a second adsorption net is arranged at the bottom end of the ventilator shell. The fan blades are driven to rotate through the motor in the ventilation machine shell, external air enters the cabinet body, good air circulation is formed, heat generated by electrical elements is taken away, the first adsorption net, the synthetic fiber filter net and the activated carbon filter net in the ventilation machine shell can prevent dust from being accumulated on the electrical elements to affect normal work, and the reliability of equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of low-voltage complete switchgear, in particular to energy-saving and environment-friendly low-voltage complete switchgear. Background Art

[0002] During the operation of low-voltage complete switchgear, dust prevention, filtration and heat dissipation are crucial. Existing equipment has many deficiencies in these aspects. It is difficult to completely seal dust prevention and the problem of long-term dust accumulation and cleaning is not considered. There are many precision electrical components in low-voltage complete switchgear. After dust enters, it will be deposited on the components, which will reduce the insulation performance of high-voltage and small-pitch electrical components, causing the risk of electrical breakdown, and will also cause poor contact or even short-circuit failures, and affect the heat dissipation of components.

[0003] Some air filtration devices are relatively simple, mostly with a single filter structure, which has poor filtering effect on tiny particles and harmful chemicals. They cannot meet the needs of long-term stable operation of equipment in harsh environments, and will also increase the cost and workload of replacing filter elements.

[0004] Traditional heat dissipation cannot meet the requirements in high-power equipment. The heat cannot be dissipated in time, and the temperature inside the equipment increases, which will lead to the performance of electrical components being degraded, shortening the service life, and even causing equipment failure and fire. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an energy-saving and environmentally friendly low-voltage complete switchgear, which solves the deficiencies in dust prevention, filtering and heat dissipation of traditional equipment.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an energy-saving and environmentally friendly low-voltage complete switchgear, comprising a cabinet body, one side of the cabinet body is rotatably connected to a cabinet door through a hinge, the outer wall of the cabinet door is provided with an observation glass, one side of the outer wall of the cabinet door is provided with a handle, the bottom end of the cabinet body is provided with a plurality of universal wheels, the top end of the cabinet body is provided with a ventilator housing, the inner wall of the ventilator housing is provided with a plurality of brackets, one end of the bracket is provided with a motor, and the output end of the motor is fixedly provided with a fan blade, the top end of the ventilator housing is provided with a filter frame, the interior of the filter frame is provided with an adsorption net 1, the bottom end of the adsorption net 1 is provided with a synthetic fiber filter, the bottom end of the synthetic fiber filter is provided with an activated carbon filter, the two ends of the synthetic fiber filter and the activated carbon filter are located inside the filter frame, the bottom end of the ventilator housing is provided with an adsorption net 2, and the outer wall of the cabinet body is provided with a fire extinguishing device.

[0007] Preferably, the fire extinguishing device includes a support, one end of which is fixedly arranged on the outer wall of the cabinet, a carbon dioxide fire extinguishing tank is arranged on the upper surface of the support, a fixing sleeve is arranged on the outer wall of the carbon dioxide fire extinguishing tank, one end of the fixing sleeve is connected to the outer wall of the cabinet, and a connecting pipe is arranged on the top of the carbon dioxide fire extinguishing tank.

[0008] Preferably, an electromagnetic valve is provided on the outer wall of the connecting pipe 1, a connecting pipe is fixedly provided on the connecting pipe 1 passing through the cabinet, the outer wall of the connecting pipe is provided on the inner wall of the cabinet, a plurality of nozzles are provided on the outer wall of the connecting pipe, and a cooling device is provided on the bottom end of the inner wall of the cabinet.

[0009] Preferably, the cooling device includes a coolant tank, the bottom end of the coolant tank is arranged at the bottom end of the inner wall of the cabinet, the bottom end of the inner wall of the cabinet is provided with a plurality of ventilation holes, a cooling pipe is fixedly provided on one side of the coolant tank, and the outer wall of the cooling pipe is arranged at the top end of the inner wall of the cabinet.

[0010] Preferably, a water pump is fixedly provided at one end of the cooling pipe, the bottom end of the water pump is arranged at the bottom end of the inner wall of the cabinet, and the side wall of the water pump is fixedly provided on the other side of the coolant tank through a second connecting pipe.

[0011] Preferably, a fixing plate three is symmetrically fixedly arranged at the top middle part of the inner wall of the cabinet, and the fixing plate three is slidably connected to a placement plate three through a slide groove, and a plurality of heat dissipation holes are arranged on the upper surface of the placement plate three; a fixing plate two is symmetrically fixedly arranged at the middle part of the inner wall of the cabinet, and the fixing plate two is slidably connected to the placement plate two through a slide groove; a fixing plate one is symmetrically fixedly arranged at the bottom middle part of the inner wall of the cabinet, and the fixing plate one is slidably connected to the placement plate one through a slide groove, and the upper surfaces of the placement plate one, the placement plate two, and the placement plate three are all provided with electrical structures.

[0012] Preferably, the electrical structure includes a frame circuit breaker, a terminal block, a relay, a current transformer, and a capacitor. The bottom ends of the frame circuit breaker, the terminal block and the relay are arranged on the upper surface of the placement plate three. The terminal block and the relay are electrically connected to the frame circuit breaker. The frame circuit breaker is electrically connected to the current transformer. The bottom end of the current transformer is arranged on the upper surface of the placement plate two. The frame circuit breaker is electrically connected to the capacitor. The bottom end of the capacitor is arranged on the upper surface of the placement plate one.

[0013] Preferably, a controller is provided at the top of the inner wall of the cabinet, and a smoke sensor is provided at the top of the inner wall of the cabinet.

[0014] Working principle: During operation, the motor in the ventilator housing drives the fan blades to rotate, and the external air first passes through the adsorption net 1, synthetic fiber filter and activated carbon filter in the filter frame, and then enters the cabinet after secondary filtration by the adsorption net 2 at the bottom of the ventilator housing, achieving ventilation and blocking dust. The temperature sensor in the controller monitors the cabinet temperature, and adjusts the motor speed according to the temperature change to adjust the ventilation volume, which is energy-saving and effectively dissipates heat. The smoke sensor monitors the cabinet in real time. In case of fire, the signal is transmitted to the controller, and the controller controls the solenoid valve to open. The carbon dioxide in the carbon dioxide fire extinguisher tank is sprayed out from the nozzle through the connecting pipe 1 and the connecting pipe to extinguish the fire, protecting the safety of the equipment. In the cooling device, the water pump draws the coolant in the coolant tank into the cooling pipe. The cooling pipe exchanges heat with the hot air at the top of the cabinet. The heat-conducting silicone sheet on its outer wall assists in heat dissipation. The heated coolant flows back to the coolant tank, and the cold air introduced by the ventilation hole is used to dissipate the heat again to maintain a low temperature environment. The components of the electrical structure are placed on the corresponding placement board according to the layout. The frame circuit breaker plays a protective control role, the current transformer converts the current signal for monitoring, the wiring terminals connect the components with the external circuit, the relay assists in control, and the capacitor performs reactive power compensation. The placement board is easy to install and maintain through the slide slot, and the heat dissipation holes cooperate with the cabinet ventilation to help dissipate heat and ensure overall stable operation.

[0015] The present invention provides an energy-saving and environmentally friendly low-voltage complete switchgear. It has the following beneficial effects: 1. The present invention drives the fan blades to rotate through the motor in the ventilator casing, which can promote external air to enter the cabinet, form good air circulation, and effectively take away the heat generated by the operation of electrical components. The adsorption net in the filter, then the synthetic fiber filter net and then the activated carbon filter net, can prevent dust from accumulating on the electrical components and affecting their insulation performance and normal work, reduce electrical failures caused by dust, and improve the reliability of equipment operation.

[0016] 2. The present invention can evenly distribute carbon dioxide in the internal space of the cabinet through mist spraying, ensuring effective coverage of all possible fire sources, improving the success rate of fire extinguishing, effectively preventing the further spread and expansion of the fire, and controlling the fire loss to a minimum. It solves the problem that when low-voltage complete switchgear encounters a fire, due to the lack of effective and suitable fire-fighting measures, the fire is not put out in time and thoroughly, causing serious damage to electrical components and even causing the entire equipment to be scrapped.

[0017] 3. The present invention can accurately and quickly cool the high-temperature area in the cabinet through the circulation of coolant in the cooling pipe and the efficient heat dissipation assistance of the thermally conductive silicone sheet. This cooling method is relatively independent of the ventilation and heat dissipation system, and can provide additional cooling protection when the ventilation and heat dissipation effect is poor or the ambient temperature is high, further improving the overall thermal stability of the equipment, ensuring that the equipment can operate continuously and reliably in a more suitable temperature environment, extending the service life of the equipment and reducing the probability of failure due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front perspective schematic diagram of the present invention; Figure 2 It is a rear perspective schematic diagram of the present invention; Figure 3 It is a three-dimensional schematic diagram of the electrical structure of the present invention; Figure 4 It is a three-dimensional schematic diagram of the local structure of the controller of the present invention; Figure 5 It is a partial three-dimensional schematic diagram of the carbon dioxide fire extinguishing tank of the present invention; Figure 6 It is a three-dimensional schematic diagram of the local structure of the water pump of the present invention; Figure 7 It is a three-dimensional schematic diagram of the local structure of the motor of the present invention; Figure 8 It is a three-dimensional schematic diagram of the local structure of the filter frame of the present invention.

[0019] Among them, 1. cabinet body; 2. cabinet door; 3. filter frame; 4. adsorption net 1; 5. ventilator housing; 6. hinge; 7. observation glass; 8. handle; 9. universal wheel; 10. connecting pipe 1; 11. solenoid valve; 12. carbon dioxide fire extinguisher; 13. fixing sleeve; 14. support; 15. coolant tank; 16. water pump; 17. ventilation hole; 18. cooling pipe; 19. placement board 1; 20. fixing board 1; 21. fixing board 2; 22. controller; 23. smoke sensor; 24. adsorption net 2; 25. placement board 2; 26. connecting pipe; 27. nozzle; 28. connecting pipe 2; 29. ​​fan blade; 30. motor; 31. synthetic fiber filter; 32. activated carbon filter; 33. frame circuit breaker; 34. terminal; 35. relay; 36. current transformer; 37. capacitor; 38. placement board 3; 39. fixing board 3. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example: Please see attached Figure 1 -Attached Figure 4 , Attachment Figure 7 , Attachment Figure 8The embodiment of the present invention provides an energy-saving and environmentally friendly low-voltage complete switchgear, including a cabinet 1, a cabinet door 2 is rotatably connected to one side of the cabinet 1 through a hinge 6, an observation glass 7 is arranged on the outer wall of the cabinet door 2, a handle 8 is arranged on one side of the outer wall of the cabinet door 2, a plurality of universal wheels 9 are arranged on the bottom end of the cabinet 1, a ventilator housing 5 is arranged on the top end of the cabinet 1, a plurality of brackets are arranged on the inner wall of the ventilator housing 5, a motor 30 is arranged on one end of the bracket, a fan blade 29 is fixedly arranged on the output end of the motor 30, and a top end of the ventilator housing 5 is provided with a plurality of brackets. A filter frame 3 is provided, an adsorption net 1 4 is provided inside the filter frame 3, a synthetic fiber filter net 31 is provided at the bottom end of the adsorption net 1 4, an activated carbon filter net 32 ​​is provided at the bottom end of the synthetic fiber filter net 31, both ends of the synthetic fiber filter net 31 and the activated carbon filter net 32 ​​are located inside the filter frame 3, an adsorption net 2 24 is provided at the bottom end of the ventilator casing 5, a fire extinguishing device is provided on the outer wall of the cabinet 1; a controller 22 is provided at the top end of the inner wall of the cabinet 1, and a smoke sensor 23 is provided at the top end of the inner wall of the cabinet 1.

[0022] Specifically, the cabinet body 1 is rotatably connected to the cabinet door 2 through a hinge 6, so that the cabinet door 2 can be flexibly opened and closed. The observation glass 7 on the outer wall of the cabinet door 2 allows the operator to intuitively observe the working status, connection lines, etc. of the electrical components in the cabinet body 1 without opening the cabinet door 2, which is convenient for timely detection of abnormalities and daily inspection and maintenance of the equipment and operation of electrical components. The universal wheel 9 installed at the bottom of the cabinet body 1 enables the entire equipment to be easily moved on a plane, and the operator only needs to apply a small thrust or pull to move the equipment to the specified position.

[0023] The temperature sensor unit inside the controller 22 monitors the temperature inside the cabinet 1 in real time. When the temperature is within the normal range, the motor 30 runs at a lower basic speed to maintain a certain amount of air circulation, ensuring the heat dissipation effect while reducing energy consumption, which plays a role in energy saving. As the electrical components in the cabinet 1 generate heat, the temperature gradually rises, and the temperature sensor unit transmits the temperature change signal to the controller 22. The output unit of the controller 22 will gradually increase the speed of the motor 30 according to the preset temperature, thereby increasing the ventilation volume, allowing more cold air to enter the cabinet 1, and strengthening the heat dissipation effect. When the temperature drops to a suitable range, the speed of the motor 30 will gradually return to the basic level. During the ventilation process, the external air first passes through the filter frame 3, where the synthetic fiber filter 31 and the activated carbon filter 32 filter the air. The synthetic fiber filter 31 mainly blocks larger particles of dust in the air, and the activated carbon filter 32 further absorbs tiny dust and some harmful gases. The two work together to effectively filter out dust impurities in the air and prevent them from entering the cabinet 1, ensuring the cleanliness of the air entering the cabinet 1 and preventing dust from damaging the electrical components. The smoke sensor 23 continuously monitors the smoke condition in the cabinet 1. Once smoke appears in the cabinet 1, the smoke sensor 23 immediately transmits a signal to the controller 22. After receiving the signal, the controller 22 quickly analyzes and judges through the internal related processing module, and activates the fire extinguishing device on the outer wall of the cabinet 1 through the output unit.

[0024] By intelligently controlling the speed of the motor 30, the function of dynamically adjusting the ventilation volume according to the actual heat dissipation demand is realized, which avoids the energy waste caused by the motor 30 running at a high speed all the time, effectively improves the energy-saving effect of the equipment, and continuously circulates and dissipates heat in the cabinet during the ventilation process, ensuring the normal operation of the equipment. At the same time, the multi-layer filtering structure ensures the cleanliness of the air entering the cabinet 1, reduces the damage to electrical components by pollutants such as dust, ensures the normal operation and long service life of electrical components, and improves the reliability and stability of equipment operation. It solves the problem that the ventilation volume cannot be flexibly adjusted according to actual needs during the heat dissipation process of traditional low-voltage complete switchgear, resulting in energy waste and poor heat dissipation effect. At the same time, it overcomes the defect that due to incomplete air filtration, dust accumulates on electrical components, affecting their insulation performance and heat dissipation efficiency, thereby reducing the reliability and life of the equipment.

[0025] Please see attached Figure 2 , Attachment Figure 3 , Attachment Figure 5The fire extinguishing device includes a support 14, one end of which is fixedly arranged on the outer wall of the cabinet 1, a carbon dioxide fire extinguishing tank 12 is arranged on the upper surface of the support 14, a fixing sleeve 13 is arranged on the outer wall of the carbon dioxide fire extinguishing tank 12, one end of the fixing sleeve 13 is connected to the outer wall of the cabinet 1, a connecting pipe 10 is arranged on the top of the carbon dioxide fire extinguishing tank 12, a solenoid valve 11 is arranged on the outer wall of the connecting pipe 10, a connecting pipe 26 is fixedly arranged on the connecting pipe 10 passing through the cabinet 1, the outer wall of the connecting pipe 26 is arranged on the inner wall of the cabinet 1, a plurality of nozzles 27 are arranged on the outer wall of the connecting pipe 26, and a cooling device is arranged on the bottom end of the inner wall of the cabinet 1.

[0026] Specifically, when the smoke sensor 23 in the cabinet 1 detects a smoke signal and transmits the signal to the controller 22, the controller 22 immediately processes and judges the signal. If it is confirmed that there is a fire risk, the output unit of the controller 22 will send an opening command to the solenoid valve 11. At this time, the solenoid valve 11 is opened, and the carbon dioxide in the high-pressure liquid state in the carbon dioxide fire extinguishing tank 12 is transported to each nozzle 27 through the connecting pipe 10, the cabinet 1 and the connecting pipe 26 under the action of pressure. Subsequently, the carbon dioxide is sprayed out from the nozzle 27 in the form of mist and quickly diffuses inside the cabinet 1. Since the density of carbon dioxide is greater than that of air, it will gradually accumulate at the bottom of the cabinet 1 and spread upward, displacing the air, thereby isolating the contact between oxygen and the combustible material, inhibiting the combustion reaction, until the flame is extinguished.

[0027] It realizes fast, efficient and accurate fire extinguishing operation. The carbon dioxide fire extinguishing medium will not leave any residue or water stains during the fire extinguishing process, avoiding secondary damage to the precision electrical components in the cabinet 1, and protecting the integrity and availability of the equipment to the greatest extent. It solves the problem that when low-voltage complete switchgear encounters a fire, due to the lack of effective and suitable fire extinguishing measures, the fire is not put out in time and thoroughly, causing serious damage to the electrical components and even causing the entire equipment to be scrapped.

[0028] Please see attached Figure 3 , Attachment Figure 4 , Attachment Figure 6 The cooling device includes a coolant tank 15, the bottom end of the coolant tank 15 is arranged at the bottom end of the inner wall of the cabinet 1, and a plurality of ventilation holes 17 are arranged at the bottom end of the inner wall of the cabinet 1. A cooling pipe 18 is fixedly arranged on one side of the coolant tank 15, and the outer wall of the cooling pipe 18 is arranged on the top end of the inner wall of the cabinet 1. A water pump 16 is fixedly arranged on one end of the cooling pipe 18, and the bottom end of the water pump 16 is arranged at the bottom end of the inner wall of the cabinet 1. The side wall of the water pump 16 is fixedly arranged on the other side of the coolant tank 15 through a connecting pipe 28.

[0029] Specifically, when the equipment is running, the controller 22 judges and regulates the temperature condition inside the cabinet 1 monitored by the temperature sensor unit. Once the temperature rises to the set threshold value that requires auxiliary cooling, the controller 22 starts the water pump 16, and the water pump 16 runs to extract coolant from the coolant tank 15. Under the pressure of the water pump 16, the coolant flows into the cooling pipe 18 through the connecting pipe 28. The cooling pipe 18 is arranged at the top of the inner wall of the cabinet 1. The high-temperature air circulates in the cabinet 1 under the drive of the ventilation housing 5, and heat exchanges with the cooling pipe 18. The temperature of the coolant rises after absorbing heat. At this time, the thermal conductive silicone sheet wrapped around the outer wall of the cooling pipe 18 plays a key role. With its good thermal conductivity, it quickly conducts the heat of the coolant in the cooling pipe 18 to the surface of the silicone sheet, and then dissipates the heat by contacting with the air inside the cabinet 1, using the flow of air, thereby achieving cooling of the coolant. The cooled coolant circulates along the cooling pipe 18 and finally flows back to the coolant tank 15. In the coolant tank 15, the coolant can further dissipate heat by means of natural heat dissipation and external cold air introduced by the ventilation holes 17 at the bottom of the cabinet 1. The cooled coolant can be pumped by the water pump 16 again to enter the next cycle, and this cycle is repeated to continuously provide cooling effect for the inside of the cabinet 1.

[0030] Through the circulation of the coolant in the cooling pipe 18 and the efficient heat dissipation assistance of the thermal conductive silicone sheet, the high-temperature area in the cabinet 1, especially the area where the electrical components are concentrated and the heat generation is large, can be cooled accurately and quickly, greatly reducing the risk of performance degradation or damage of the electrical components due to being in a high-temperature environment for a long time, effectively extending the service life of the equipment, and significantly reducing the probability of failure caused by high temperature. It solves the shortcomings of the traditional cooling method, which is single, the cooling efficiency is limited, and the internal temperature of the equipment cannot be effectively controlled under extreme circumstances. It improves the adaptability of the equipment to complex operating environments and the operating reliability, and provides a solid guarantee for the stable power supply of the power system and the normal operation order of the equipment.

[0031] Please see attached Figure 3 , Attachment Figure 4 A fixing plate three 39 is symmetrically fixedly arranged at the top middle part of the inner wall of the cabinet 1, and the fixing plate three 39 is slidably connected to a placement plate three 38 through a slide groove, and a plurality of heat dissipation holes are arranged on the upper surface of the placement plate three 38; a fixing plate two 21 is symmetrically fixedly arranged at the middle part of the inner wall of the cabinet 1, and the fixing plate two 21 is slidably connected to a placement plate two 25 through a slide groove; a fixing plate one 20 is symmetrically fixedly arranged at the bottom middle part of the inner wall of the cabinet 1, and the fixing plate one 20 is slidably connected to a placement plate one 19 through a slide groove, and electrical structures are arranged on the upper surfaces of the placement plate one 19, the placement plate two 25, and the placement plate three 38.

[0032] Specifically, the placement board 1 19, the placement board 25 and the placement board 3 38 are connected by sliding through the corresponding slide grooves on the fixed board 1 20, the fixed board 21 and the fixed board 3 39. When installing the electrical structure, the placement board can be pulled out of the cabinet 1 along the slide groove, and the electrical structure can be conveniently installed on the upper surface of the placement board. After the installation is completed, the placement board is pushed back to the appropriate position in the cabinet 1 and fixed. During the operation of the equipment, part of the heat generated by the electrical structure on the placement board is dissipated to the surrounding air through natural convection and radiation. At the same time, the external cold air introduced by the ventilation housing 5 flows in the cabinet 1, passes through the gaps between the placement board 19, the placement board 25 and the placement board 3 38 and the heat dissipation holes on the placement board, and accelerates the transfer and exchange of heat, so that the heat is taken out of the cabinet 1 to achieve heat dissipation.

[0033] The electrical structure is conveniently installed and maintained in the cabinet 1. The design of the placement plate with sliding connection greatly reduces the difficulty and workload of installing and removing the electrical structure, improves work efficiency, and reduces the time cost required for equipment installation and maintenance. It solves the problem of inconvenient installation of the internal electrical structure of traditional low-voltage complete switchgear, especially when the cabinet 1 has limited space and complex internal structure, and it is difficult to accurately install and effectively fix it.

[0034] Please see attached Figure 3 -Attached Figure 4 The electrical structure includes a frame circuit breaker 33, a terminal block 34, a relay 35, a current transformer 36, and a capacitor 37. The bottom ends of the frame circuit breaker 33, the terminal block 34, and the relay 35 are arranged on the upper surface of the placement plate three 38. The terminal block 34 and the relay 35 are electrically connected to the frame circuit breaker 33. The frame circuit breaker 33 is electrically connected to the current transformer 36. The bottom end of the current transformer 36 is arranged on the upper surface of the placement plate two 25. The frame circuit breaker 33 is electrically connected to the capacitor 37. The bottom end of the capacitor 37 is arranged on the upper surface of the placement plate one 19.

[0035] Specifically, the frame circuit breaker 33, as the core protection and control element, plays the role of overload, short circuit and other fault protection and on-off control for the entire circuit. The current transformer 36 converts the large current in the main circuit into a small current signal that can be measured and controlled in proportion through the principle of electromagnetic induction, and transmits it to the frame circuit breaker 33. The frame circuit breaker 33 performs current monitoring and protection action judgment based on the received current signal. The terminal 34 provides a physical interface for the connection between each electrical component and the external circuit to ensure the reliable transmission of electric energy and signals. Driven by the control signal, the relay 35 realizes the auxiliary control and signal conversion function of the circuit. It is electrically connected with the frame circuit breaker 33 to work together to complete operations such as remote control and interlocking protection. The capacitor 37 is connected in parallel in the circuit. Using its capacitance characteristics, it performs reactive compensation when the circuit voltage fluctuates, stabilizes the voltage, improves the power factor, and reduces reactive loss. Its electrical connection with the frame circuit breaker 33 ensures its normal operation and control in the circuit. These electrical components are reasonably arranged on the placement board, and the heat generated during operation is dissipated through the heat dissipation holes of the placement board and the ventilation and heat dissipation system in the cabinet 1, so as to maintain their normal operating temperature range.

[0036] Through the operation among the frame circuit breaker 33, the current transformer 36, the terminal 34, the relay 35 and the capacitor 37, the safe and stable operation of the circuit under various abnormal conditions is ensured, equipment damage and electrical accidents are avoided, and the reliability and service life of the equipment are improved.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving and environmentally friendly low-voltage complete switchgear, comprising a cabinet (1), characterized in that: One side of the cabinet body (1) is rotatably connected to a cabinet door (2) via a hinge (6); an observation glass (7) is provided on the outer wall of the cabinet door (2); a handle (8) is provided on one side of the outer wall of the cabinet door (2); a plurality of universal wheels (9) are provided at the bottom end of the cabinet body (1); a ventilator housing (5) is provided at the top end of the cabinet body (1); a plurality of brackets are provided on the inner wall of the ventilator housing (5); a motor (30) is provided at one end of the bracket; a fan blade (29) is fixedly provided at the output end of the motor (30); and the ventilator housing (5) is provided with a plurality of brackets. A filter frame (3) is arranged at the top of the casing (5), an adsorption net 1 (4) is arranged inside the filter frame (3), a synthetic fiber filter net (31) is arranged at the bottom of the adsorption net 1 (4), an activated carbon filter net (32) is arranged at the bottom of the synthetic fiber filter net (31), both ends of the synthetic fiber filter net (31) and the activated carbon filter net (32) are located inside the filter frame (3), an adsorption net 2 (24) is arranged at the bottom of the ventilation casing (5), and a fire extinguishing device is arranged on the outer wall of the cabinet (1).

2. The energy-saving and environmentally friendly low-voltage complete switchgear according to claim 1 is characterized in that: The fire extinguishing device comprises a support (14), one end of the support (14) is fixedly arranged on the outer wall of the cabinet (1), a carbon dioxide fire extinguishing tank (12) is arranged on the upper surface of the support (14), a fixing sleeve (13) is arranged on the outer wall of the carbon dioxide fire extinguishing tank (12), one end of the fixing sleeve (13) is connected to the outer wall of the cabinet (1), and a connecting pipe (10) is arranged on the top of the carbon dioxide fire extinguishing tank (12).

3. The energy-saving and environmentally friendly low-voltage complete switchgear according to claim 2 is characterized in that: The outer wall of the connecting pipe 1 (10) is provided with a solenoid valve (11); the connecting pipe 1 (10) passes through the cabinet (1) and is fixedly provided with a connecting pipe (26); the outer wall of the connecting pipe (26) is arranged on the inner wall of the cabinet (1); a plurality of nozzles (27) are arranged on the outer wall of the connecting pipe (26); and a cooling device is provided at the bottom end of the inner wall of the cabinet (1).

4. The energy-saving and environmentally friendly low-voltage complete switchgear according to claim 3 is characterized in that: The cooling device comprises a cooling liquid tank (15), the bottom end of the cooling liquid tank (15) being arranged at the bottom end of the inner wall of the cabinet (1), the bottom end of the inner wall of the cabinet (1) being provided with a plurality of ventilation holes (17), a cooling pipe (18) being fixedly arranged on one side of the cooling liquid tank (15), the outer wall of the cooling pipe (18) being arranged at the top end of the inner wall of the cabinet (1).

5. The energy-saving and environmentally friendly low-voltage complete switchgear according to claim 4 is characterized in that: A water pump (16) is fixedly disposed at one end of the cooling pipe (18), the bottom end of the water pump (16) is disposed at the bottom end of the inner wall of the cabinet (1), and the side wall of the water pump (16) is fixedly disposed on the other side of the coolant tank (15) via a second connecting pipe (28).

6. The energy-saving and environmentally friendly low-voltage complete switchgear according to claim 1 is characterized in that: A fixing plate three (39) is symmetrically fixedly arranged at the top of the middle part of the inner wall of the cabinet (1), and the fixing plate three (39) is slidably connected to a placement plate three (38) through a slide groove, and a plurality of heat dissipation holes are arranged on the upper surface of the placement plate three (38). A fixing plate two (21) is symmetrically fixedly arranged at the middle part of the inner wall of the cabinet (1), and the fixing plate two (21) is slidably connected to a placement plate two (25) through a slide groove. A fixing plate one (20) is symmetrically fixedly arranged at the bottom of the middle part of the inner wall of the cabinet (1), and the fixing plate one (20) is slidably connected to a placement plate one (19) through a slide groove. The upper surfaces of the placement plate one (19), the placement plate two (25), and the placement plate three (38) are all provided with electrical structures.

7. The energy-saving and environmentally friendly low-voltage complete switchgear according to claim 6, characterized in that: The electrical structure comprises a frame circuit breaker (33), a terminal block (34), a relay (35), a current transformer (36), and a capacitor (37); the bottom ends of the frame circuit breaker (33), the terminal block (34), and the relay (35) are arranged on the upper surface of a third placement plate (38); the terminal block (34) and the relay (35) are electrically connected to the frame circuit breaker (33); the frame circuit breaker (33) is electrically connected to the current transformer (36); the bottom end of the current transformer (36) is arranged on the upper surface of a second placement plate (25); the frame circuit breaker (33) is electrically connected to the capacitor (37); the bottom end of the capacitor (37) is arranged on the upper surface of a first placement plate (19).

8. The energy-saving and environmentally friendly low-voltage complete switchgear according to claim 1 is characterized in that: A controller (22) is provided at the top end of the inner wall of the cabinet (1), and a smoke sensor (23) is provided at the top end of the inner wall of the cabinet (1).

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