High-low voltage power distribution cabinet with protection function and use method thereof

Abstract

The invention relates to the technical field of power distribution cabinet protection, and discloses a high-low voltage power distribution cabinet with a protection function and a use method thereof.The high-low voltage power distribution cabinet comprises a shell mechanism, the shell mechanism further comprises a base, and a fixed square pipe is fixedly connected to the top of the base. The piston plate is driven to slide downwards along the inner wall of the fixed square pipe, the space inside the electric box shell and above the piston plate is a closed environment, when the piston plate moves downwards, the space of the closed environment is increased, but internal gas is not changed, the environment is forced to form a low-pressure environment, and when normal air pressure is converted into the low-pressure environment, the low-pressure environment is not changed. Through the application of the components, the overall temperature in the base is synchronously reduced when the outside is cooled in rainy days, so that the temperature of air inside and outside the base is in a level state, the temperature difference between the inside and outside of the base is reduced, and the situation that small water drops are generated in the base, and the service life of internal electronic instruments is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinet protection equipment, and in particular to a high and low voltage power distribution cabinet with protection function and a use method thereof. Background Art

[0002] As the name suggests, high and low voltage distribution cabinets are distribution equipment used for power distribution, control, metering and cable connection in the power supply system. Generally, power supply bureaus and substations use high voltage switch cabinets, which are then stepped down by transformers and led to low voltage distribution cabinets. The low voltage distribution cabinets are then led to the distribution boards, control boxes and switch boxes of various power users. The equipment contains distribution devices that meet the design functional requirements by assembling some switches, circuit breakers, fuses, buttons, indicator lights, meters, wires and other protective devices into one. The protection functions include anti-collision, anti-wind and sand and other functions.

[0003] However, in order to resist the erosion of sea breeze, the distribution cabinets in the southern coastal areas are mostly sealed. In the summer in this area, the temperature is high, and the outer shell of the distribution cabinet is mostly made of metal. After being baked by the sun, the temperature of the metal distribution cabinet itself is extremely high, and the temperature of the air inside the distribution cabinet will be increased simultaneously. In addition, the climate in coastal areas is unstable and sudden rains often occur. Under the influence of its own high temperature and external water cooling, some water droplets will form inside the metal distribution cabinet, and the formation of water droplets will affect the service life of the internal electronic equipment. In response to the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a high and low voltage power distribution cabinet with protective function, comprising a base, a fixed square tube is fixedly connected to the top of the base, an end of the fixed square tube away from the base is connected to an electric box shell, and an electric box door is rotatably connected to the side wall of the electric box shell;

[0005] The power mechanism includes an electric telescopic rod fixedly connected to the bottom of the inner wall of the fixed square tube, an end of the electric telescopic rod away from the base is fixedly connected to a piston plate, an outer wall of the piston plate is slidably connected to the inner wall of the fixed square tube, an exhaust port is opened on the top of the piston plate, and a sealing assembly is fixedly connected to the side wall of the electric box shell;

[0006] The feeding mechanism includes an exhaust frame fixedly connected to the inner wall of the exhaust port, a spring sliding rod slidably connected to the inner wall of the exhaust frame, a blocking ball fixedly connected to the top of the spring sliding rod, a sealing cylinder fixedly connected to the top of the piston plate, and a filter assembly fixedly connected to the top of the base.

[0007] Preferably, the shell mechanism also includes a sealing groove opened at the side wall of the electrical box door, an air outlet is opened at the top of the electrical box shell, and an air inlet component is installed on the inner wall of the air outlet. By utilizing the characteristic that the temperature of the gas in the space will be reduced when the normal air pressure is converted to low pressure, an electric telescopic rod and a piston plate are arranged inside the equipment, and the electrical box door is ensured to be in a tightly closed state. When the equipment needs to be operated, the power supply of the electric telescopic rod is turned on. At this time, the electric telescopic rod generates a contraction force, driving the piston plate to slide downward along the inner wall of the fixed square tube, and the space inside the electrical box shell and above the piston plate is a closed environment. When the piston plate moves downward, the space of the closed environment increases, but the internal gas remains unchanged, forcing the environment to form a low-pressure environment. When the normal air pressure is converted to a low-pressure environment, the gas temperature in the closed environment will be forced to decrease. Through the application of the above-mentioned components, when it rains and the temperature drops outside, the overall temperature inside the base is simultaneously reduced, so that the air temperature inside and outside the base is kept constant, the temperature difference inside and outside the base is reduced, and the generation of fine water droplets inside the base is avoided, which affects the service life of the internal electronic instruments.

[0008] Preferably, the air intake assembly includes an air intake rotating plate rotatably connected to the inner wall of the air outlet, a support frame is fixedly connected to the top of the inner wall of the electrical box shell, and a rotating plate is rotatably connected to the inner wall of the support frame.

[0009] Preferably, the air intake assembly also includes a push rod rotatably connected to the inner wall of the support frame, the end of the push rod away from the rotating plate is rotatably connected to the bottom of the air intake rotating plate, the end of the rotating plate away from the push rod is rotatably connected to a pulling and telescopic rod, the end of the pulling and telescopic rod away from the rotating plate is fixedly connected to the top of the piston plate, and the inner wall of the air outlet is fixedly connected to an air intake pipe.

[0010] Preferably, the sealing assembly includes a sealing ring fixedly connected to the side wall of the electrical box shell, a mounting plate fixedly connected to the side wall of the sealing ring, a rubber block fixedly connected to the side wall of the mounting plate, and a deformation frame rotatably connected to the side wall of the mounting plate. By using the deformation frame, the sealing between the electrical box shell and the electrical box door is improved.

[0011] Preferably, the sealing assembly also includes a push slide bar slidably connected to the inner wall of the through hole of the mounting plate, one end of the push slide bar is fixedly connected to the side wall of the deformation frame, the end of the push slide bar away from the deformation frame is fixedly connected to the inclined plate, the side wall of the sealing ring is connected with a telescopic tube, the end of the telescopic tube away from the sealing ring is rotatably connected to a ball, and the characteristic of negative pressure generating contraction force is utilized to provide a telescopic tube inside the equipment. When negative pressure is generated inside the electrical box shell, the telescopic tube will be affected by the negative pressure and will extend inwardly, at which time the telescopic tube drives the ball to extend outward, forcing the ball to contact with the inclined plate. The inclined surface of the panel contacts the inclined surface, and the ball will push the inclined panel to move sideways, and the inclined panel will drive the push slide bar to move synchronously outward along the inner wall of the mounting plate, and the push slide bar will drive one end of the deformation frame to move outward. At the same time, the deformation frame is pulled by the push slide bar, which will force the two ends of the deformation frame to extend outward. At this time, the deformation frame pushes the rubber block to expand outward and completely fills the inner wall of the sealing groove, thereby improving the sealing between the equipment's electrical box shell and the electrical box door, avoiding the increase of negative pressure inside the electrical box shell, causing air to enter the electrical box shell through the gap, and affecting the low-voltage cooling effect of the equipment.

[0012] Preferably, the filter assembly includes an air inlet box fixedly connected to the top of the base, the top of the air inlet box is connected with a speaker plate, the top of the speaker plate is connected with a filter square tube, the inner wall of the filter square tube is fixedly connected with a fixed bracket, the outer wall of the fixed bracket is slidably connected with a piston cleaning plate, the top of the piston cleaning plate is fixedly connected with a pushing spring, the end of the pushing spring away from the piston cleaning plate is fixedly connected to the bottom of the fixed bracket, and the end of the air inlet pipe away from the air outlet is connected with the top of the filter square tube. Utilizing the characteristic of the downward movement of the above-mentioned piston plate, a pulling and telescopic rod is provided inside the equipment. After the rain stops outside, the piston plate continues to move downward, and the pulling and telescopic rod will be stretched to the longest. At this time, the pulling and telescopic rod will move downward through one end of the rotating plate, forcing the other end of the rotating plate to tilt upward. The rotating plate pushes one end of the air inlet rotating plate to tilt upward through the pushing rod. At this time, the suction force generated by the negative pressure inside the electrical box shell passes through the above-mentioned gap and the inlet The air pipe acts on the top of the piston cleaning plate, forcing the piston cleaning plate to slide upward along the outer wall of the fixed bracket, and the top of the fixed bracket is hollow, and a new gap will be formed between the piston cleaning plate and the fixed bracket. At this time, the external air causes moisture to rise due to rain and enters the air inlet box. With the opening of the above two gaps, high-humidity air passes through the air inlet box to the speaker plate position. Limited by the large bottom and small top shape of the speaker plate, when the air passes through the narrow opening at the top of the speaker plate, a higher air pressure and airflow will be generated in this area. Water vapor will condense and precipitate under high-pressure conditions. In the process of water vapor condensation, water molecules will absorb saline-alkali substances around the air, so that the saline-alkali substances and part of the water vapor will condense synchronously at the narrow opening of the speaker plate. Through the application of the above components, the total amount of water vapor and saline-alkali substances in the inhaled air can be effectively reduced during the subsequent ventilation of the equipment, avoiding excessive saline-alkali substances and water vapor, which may cause the use of electronic instruments inside the base.

[0013] A method for using a high and low voltage distribution cabinet with a protective function comprises the following steps:

[0014] S1: When using the equipment, make sure the door of the electrical box is tightly closed. When the equipment needs to be operated, turn on the power of the electric telescopic rod. The electric telescopic rod generates a contraction force, driving the piston plate to slide downward along the inner wall of the fixed square tube.

[0015] S2: The space inside the electric box shell and above the piston plate is a closed environment. When the piston plate moves down, the space of the closed environment increases, but the internal gas remains unchanged, forcing the environment to form a low-pressure environment;

[0016] S3: After the rain stops outside, the piston plate continues to move downward, and the telescopic rod is pulled to stretch to the longest. At this time, the telescopic rod is pulled to move downward through one end of the rotating plate, forcing the other end of the rotating plate to tilt upward.

[0017] The present invention has the following beneficial effects:

[0018] (1) The present invention utilizes the characteristic that when normal air pressure is transformed into low pressure, the temperature of the gas in the space will be reduced. An electric telescopic rod and a piston plate are arranged inside the device, and the door of the electrical box is ensured to be in a tightly closed state. When the device needs to be operated, the power of the electric telescopic rod is turned on. At this time, the electric telescopic rod generates a contraction force, which drives the piston plate to slide downward along the inner wall of the fixed square tube. The space inside the electrical box shell and above the piston plate is a closed environment. When the piston plate moves downward, the space of the closed environment increases, but the internal gas remains unchanged, forcing the environment to form a low-pressure environment. When the normal air pressure is transformed into a low-pressure environment, the temperature of the gas in the closed environment will be forced to decrease. Through the application of the above-mentioned components, when it rains and the temperature drops outside, the overall temperature inside the base is simultaneously reduced, so that the air temperature inside and outside the base is kept constant, the temperature difference inside and outside the base is reduced, and small water droplets are avoided from being generated inside the base, which affects the service life of the internal electronic equipment.

[0019] (2) The present invention utilizes the characteristic of the piston plate moving downward, and a pulling telescopic rod is arranged inside the equipment. After the rain stops outside, the piston plate continues to move downward, and the pulling telescopic rod will be stretched to its longest length. At this time, the pulling telescopic rod will move downward through one end of the rotating plate, forcing the other end of the rotating plate to tilt upward. The rotating plate pushes one end of the air intake rotating plate to tilt upward through the pushing rod. At this time, the suction force generated by the negative pressure inside the electrical box shell acts on the top of the piston cleaning plate through the above-mentioned gap and the air inlet pipe, forcing the piston cleaning plate to slide upward along the outer wall of the fixed bracket. The top of the fixed bracket is in a hollow state, and a new gap will also be formed between the piston cleaning plate and the fixed bracket. At this time, the external air is sucked in by the suction force generated by the negative pressure inside the electrical box shell. It is raining, causing moisture to rise and enter the air inlet box. With the opening of the above two gaps, high-humidity air passes through the air inlet box to the speaker plate. Limited by the large bottom and small top of the speaker plate, when the air passes through the narrow opening at the top of the speaker plate, higher air pressure and airflow will be generated in this area. Water vapor will condense and precipitate under high-pressure environment. In the process of water vapor condensation, water molecules will absorb saline-alkali substances around the air, causing the saline-alkali substances and part of the water vapor to condense synchronously at the narrow opening of the speaker plate. Through the application of the above components, the total amount of water vapor and saline-alkali substances in the inhaled air can be effectively reduced during the subsequent ventilation of the equipment, avoiding excessive saline-alkali substances and water vapor, which may cause the use of electronic instruments inside the base.

[0020] (3) The present invention utilizes the characteristic that the piston cleaning plate moves up due to the negative pressure. A push spring is arranged on the top of the piston cleaning plate. When the piston cleaning plate moves up, the push spring will accumulate mechanical power. When the gas in the closed environment inside the base continues to increase, the suction force generated by the negative pressure will be weakened synchronously. At this time, the push spring will release the mechanical power, forcing the piston cleaning plate to reset. During this process, the outer wall of the piston cleaning plate will move downward along the inner wall of the filter square tube. During the downward movement of the filter square tube, impurities remaining at the narrow mouth of the top of the horn plate will be removed, so as to avoid excessive precipitation of saline-alkali substances at the narrow mouth of the horn plate after long-term use of the equipment, causing blockage of the narrow mouth of the horn plate and affecting the normal use of the equipment.

[0021] (4) The present invention utilizes the characteristic of negative pressure to generate contraction force. A telescopic tube is arranged inside the equipment. When negative pressure is generated inside the electrical box shell, the telescopic tube will be affected by the negative pressure and will extend inward. At this time, the telescopic tube drives the ball to extend outward, forcing the ball to contact the inclined surface of the inclined plate. At this time, the ball will push the inclined plate to move sideways, and the inclined plate will drive the push slide bar to move outward synchronously along the inner wall of the mounting plate, and the push slide bar will drive one end of the deformation frame to move outward. At the same time, the deformation frame will be pulled by the push slide bar, forcing the two ends of the deformation frame to extend outward. At this time, the deformation frame drives the rubber block to expand outward and completely fills the inner wall of the sealing groove, thereby improving the sealing between the electrical box shell and the electrical box door of the equipment, avoiding the increase of negative pressure inside the electrical box shell, causing air to enter the electrical box shell through the gap, and affecting the low-pressure cooling effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is an exploded schematic diagram of the overall structural assembly of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 It is a cross-sectional schematic diagram of the housing mechanism of the present invention;

[0026] Figure 4 It is a cross-sectional schematic diagram of the power mechanism of the present invention;

[0027] Figure 5 For the present invention Figure 4 A is an enlarged schematic diagram;

[0028] Figure 6 It is a cross-sectional schematic diagram of the feeding mechanism of the present invention;

[0029] Figure 7 For the present invention Figure 6 A magnified schematic diagram of B;

[0030] Figure 8 It is a cross-sectional schematic diagram of the air intake assembly of the present invention;

[0031] Fig. 9 For the present invention Figure 8 A magnified schematic diagram of middle C;

[0032] Fig.10 For the present invention Figure 8 A magnified schematic diagram of D in the middle;

[0033] Fig.11 It is a schematic diagram of the working process of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] In the figure: 1. base; 12. fixed square tube; 13. electric box shell; 14. electric box door; 15. sealing groove; 16. air outlet; 2. power mechanism; 21. electric telescopic rod; 22. piston plate; 23. exhaust port; 3. feeding mechanism; 31. exhaust frame; 32. spring sliding rod; 33. blocking ball; 34. sealing cylinder; 4. sealing assembly; 41. sealing ring; 42. mounting plate; 43. rubber block; 44. deformation frame; 45. push sliding rod; 46. inclined plate; 47. telescopic tube; 48. ball; 5. air intake assembly; 51. air intake rotating plate; 52. support frame; 53. rotating plate; 54. push rod; 55. air intake pipe; 56. pull telescopic rod; 6. filter assembly; 61. air intake box; 62. speaker plate; 63. filter square tube; 64. fixed bracket; 65. piston cleaning plate; 66. push spring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0037] For example, see Figure 1 - Figure 5 The present invention is a high and low voltage power distribution cabinet with a protective function, comprising a base 1, a fixed square tube 12 is fixedly connected to the top of the base 1, an end of the fixed square tube 12 away from the base 1 is connected to an electric box shell 13, and an electric box door 14 is rotatably connected to the side wall of the electric box shell 13;

[0038] The power mechanism 2 includes an electric telescopic rod 21 fixedly connected to the bottom of the inner wall of the fixed square tube 12, and the end of the electric telescopic rod 21 away from the base 1 is fixedly connected to a piston plate 22, the outer wall of the piston plate 22 is slidably connected to the inner wall of the fixed square tube 12, and an exhaust port 23 is opened on the top of the piston plate 22. The side wall of the electric box shell 13 is fixedly connected to a sealing component 4;

[0039] The feeding mechanism 3 includes an exhaust frame 31 fixedly connected to the inner wall of the exhaust port 23, a spring sliding rod 32 is slidably connected to the inner wall of the exhaust frame 31, a blocking ball 33 is fixedly connected to the top of the spring sliding rod 32, a sealing cylinder 34 is fixedly connected to the top of the piston plate 22, and a filter assembly 6 is fixedly connected to the top of the base 1.

[0040] The housing mechanism 1 also includes a sealing groove 15 provided on the side wall of the electric box door 14. An air outlet 16 is provided on the top of the electric box shell 13. An air inlet assembly 5 is installed on the inner wall of the air outlet 16. When the normal air pressure is converted to low pressure, the temperature of the gas in the space is reduced. An electric telescopic rod 21 and a piston plate 22 are provided inside the device, and the electric box door 14 is ensured to be in a tightly closed state. When the device needs to be operated, the power supply of the electric telescopic rod 21 is turned on. At this time, the electric telescopic rod 21 generates a contraction force, which drives the piston plate 22 to slide downward along the inner wall of the fixed square tube 12. The space inside the electric box shell 13 and above the piston plate 22 is a closed environment. When the piston plate 22 moves downward, the space of the closed environment increases, but the internal gas remains unchanged, forcing the environment to form a low-pressure environment. When the normal air pressure changes to a low-pressure environment, the gas temperature in the closed environment will be forced to decrease. Through the application of the above-mentioned components, when it rains and the temperature drops outside, the overall temperature inside the base 1 is simultaneously reduced, so that the air temperature inside and outside the base 1 is kept at a constant level, reducing the temperature difference between the inside and outside of the base 1, and avoiding the formation of small water droplets inside the base 1, which affects the service life of the internal electronic equipment.

[0041] For example 2, please refer to Figure 6 - Fig.10 The present invention is a high and low voltage distribution cabinet with protective function. On the basis of embodiment one, the air intake assembly 5 includes an air intake rotating plate 51 rotatably connected to the inner wall of the air outlet 16, and a support frame 52 is fixedly connected to the top of the inner wall of the electrical box shell 13, and a rotating plate 53 is rotatably connected to the inner wall of the support frame 52.

[0042] The air intake assembly 5 also includes a push rod 54 rotatably connected to the inner wall of the support frame 52, and the end of the push rod 54 away from the rotating plate 53 is rotatably connected to the bottom of the air intake rotating plate 51, and the end of the rotating plate 53 away from the push rod 54 is rotatably connected to a pulling and telescopic rod 56, and the end of the pulling and telescopic rod 56 away from the rotating plate 53 is fixedly connected to the top of the piston plate 22, and the inner wall of the air outlet 16 is fixedly connected to an air intake pipe 55.

[0043] The sealing assembly 4 includes a sealing ring 41 fixedly connected to the side wall of the electrical box shell 13, a mounting plate 42 fixedly connected to the side wall of the sealing ring 41, a rubber block 43 fixedly connected to the side wall of the mounting plate 42, and a deformation frame 44 rotatably connected to the side wall of the mounting plate 42.

[0044] The sealing assembly 4 also includes a push slide rod 45 slidably connected to the inner wall of the through hole of the mounting plate 42, one end of the push slide rod 45 is fixedly connected to the side wall of the deformation frame 44, and the end of the push slide rod 45 away from the deformation frame 44 is fixedly connected to the inclined plate 46, and a telescopic tube 47 is connected through the side wall of the sealing ring 41, and the end of the telescopic tube 47 away from the sealing ring 41 is rotatably connected to the ball 48. The telescopic tube 47 is arranged inside the equipment by utilizing the characteristic of generating contraction force by negative pressure. When negative pressure is generated inside the electric box shell 13, the telescopic tube 47 will be extended inwardly under the influence of the negative pressure. At this time, the telescopic tube 47 drives the ball 48 to extend outward, forcing the ball 48 to contact the inclined surface The inclined surface of the plate 46 contacts the inclined surface of the plate 46. At this time, the ball 48 will push the inclined plate 46 to move sideways, and the inclined plate 46 will drive the push slide bar 45 to move synchronously outward along the inner wall of the mounting plate 42, and the push slide bar 45 will drive one end of the deformation frame 44 to move outward. At the same time, the deformation frame 44 is pulled by the push slide bar 45, which will force the two ends of the deformation frame 44 to extend outward. At this time, the deformation frame 44 pushes the rubber block 43 to expand outward and completely fills the inner wall of the sealing groove 15, thereby improving the sealing between the equipment electrical box shell 13 and the electrical box door 14, avoiding the increase of negative pressure inside the electrical box shell 13, causing air to enter the electrical box shell 13 through the gap, and affecting the low-pressure cooling effect of the equipment.

[0045] The filter assembly 6 includes an air inlet box 61 fixedly connected to the top of the base 1, a speaker plate 62 is connected to the top of the air inlet box 61, a filter square tube 63 is connected to the top of the speaker plate 62, a fixed bracket 64 is fixedly connected to the inner wall of the filter square tube 63, a piston cleaning plate 65 is slidably connected to the outer wall of the fixed bracket 64, a push spring 66 is fixedly connected to the top of the piston cleaning plate 65, and one end of the push spring 66 away from the piston cleaning plate 65 is fixedly connected to the bottom of the fixed bracket 64, and the air inlet pipe 55 is away from the air outlet One end of the port 16 is connected to the top of the filter square tube 63. By utilizing the downward movement of the piston plate 22, a pulling telescopic rod 56 is provided inside the device. After the rain stops outside, the piston plate 22 continues to move downward, and the pulling telescopic rod 56 will be stretched to the longest. At this time, the pulling telescopic rod 56 will move downward through one end of the rotating plate 53, forcing the other end of the rotating plate 53 to tilt upward. The rotating plate 53 pushes one end of the air inlet rotating plate 51 to tilt upward through the push rod 54, and at this time, the negative pressure inside the electric box shell 13 is generated. The suction force acts on the top of the piston cleaning plate 65 through the above-mentioned gap and the air inlet pipe 55, forcing the piston cleaning plate 65 to slide upward along the outer wall of the fixed bracket 64, and the top of the fixed bracket 64 is in a hollow state, and a new gap will also be formed between the piston cleaning plate 65 and the fixed bracket 64. At this time, the external air causes moisture to rise due to rain and enters the inside of the air inlet box 61. With the opening of the above two gaps, high-humidity air passes through the air inlet box 61 to the position of the speaker plate 62. Limited by the shape of the speaker plate 62 with a large bottom and a small top, when the air passes through the narrow opening at the top of the speaker plate 62, a higher air pressure and airflow will be generated in this area. Water vapor will condense and precipitate under a high-pressure environment. In the process of water vapor condensation, water molecules will absorb saline-alkali substances around the air, so that the saline-alkali substances and part of the water vapor are synchronously condensed at the narrow opening of the speaker plate 62. Through the application of the above-mentioned components, it is ensured that when the equipment is subsequently ventilated, the total amount of water vapor and saline-alkali substances in the inhaled air is effectively reduced, and excessive saline-alkali substances and water vapor are avoided, which causes the use of electronic instruments inside the base 1.

[0046] The method of using the distribution box protection device includes the following steps:

[0047] S1: When using the device, ensure that the electrical box door 14 is in a tightly closed state. When the device needs to be operated, turn on the power of the electric telescopic rod 21, and the electric telescopic rod 21 generates a contraction force to drive the piston plate 22 to slide downward along the inner wall of the fixed square tube 12;

[0048] S2: The space inside the electric box shell 13 and above the piston plate 22 is a closed environment. When the piston plate 22 moves downward, the space of the closed environment increases, but the internal gas remains unchanged, forcing the environment to form a low-pressure environment;

[0049] S3: After the rain stops outside, the piston plate 22 continues to move downward, and the telescopic rod 56 is pulled to stretch to the longest. At this time, the telescopic rod 56 is pulled downward through one end of the rotating plate 53, forcing the other end of the rotating plate 53 to tilt upward.

[0050] A specific application of this embodiment is: when the equipment needs to be operated, ensure that the electric box door 14 is in a tightly closed state, and turn on the power of the electric telescopic rod 21. At this time, the electric telescopic rod 21 generates a contraction force, driving the piston plate 22 to slide downward along the inner wall of the fixed square tube 12, and the space inside the electric box shell 13 and above the piston plate 22 is a closed environment. When the piston plate 22 moves downward, the space of the closed environment increases, but the internal gas remains unchanged, forcing the environment to form a low-pressure environment. When the normal air pressure changes to a low-pressure environment, the gas temperature in the closed environment will be forced to decrease. Through the application of the above-mentioned components, when it rains and the temperature drops outside, the overall temperature inside the base 1 is synchronously reduced, so that the air temperature inside and outside the base 1 is kept constant, the temperature difference inside and outside the base 1 is reduced, and small water droplets are avoided from being generated inside the base 1, which affects the service life of the internal electronic equipment.

[0051] Taking advantage of the downward movement of the piston plate 22, a pulling telescopic rod 56 is provided inside the device. After the rain stops outside, the piston plate 22 continues to move downward, and the pulling telescopic rod 56 will be stretched to its longest length. At this time, the pulling telescopic rod 56 will move downward through one end of the rotating plate 53, forcing the other end of the rotating plate 53 to tilt upward. The rotating plate 53 pushes one end of the air intake rotating plate 51 to tilt upward through the pushing rod 54. At this time, the suction force generated by the negative pressure inside the electric box shell 13 acts on the top of the piston cleaning plate 65 through the above-mentioned gap and the air inlet pipe 55, forcing the rotating plate 53 to tilt upward. The piston cleaning plate 65 slides upward along the outer wall of the fixed bracket 64, and the top of the fixed bracket 64 is hollowed out, and a new gap is formed between the piston cleaning plate 65 and the fixed bracket 64. At this time, the external air rises due to rain and enters the air inlet box 61. With the opening of the above two gaps, high-humidity air passes through the air inlet box 61 to the position of the speaker plate 62. Limited by the shape of the speaker plate 62 with a large bottom and a small top, when the air passes through the narrow opening at the top of the speaker plate 62, a higher air pressure and airflow will be generated in this area. Water in the high-pressure environment The water vapor will condense and precipitate. In the process of water vapor condensation, water molecules will absorb saline-alkali substances around the air, so that the saline-alkali substances and part of the water vapor will condense synchronously at the narrow position of the speaker plate 62. Through the application of the above components, it is ensured that the total amount of water vapor and saline-alkali substances in the inhaled air is effectively reduced during the subsequent ventilation of the equipment, and the use of electronic instruments inside the base 1 is avoided. The above negative pressure is used to cause the piston cleaning plate 65 to move upward. A push spring 66 is set on the top of the piston cleaning plate 65. When the piston cleaning plate 65 moves upward, the push spring 66 6 will accumulate mechanical power. When the gas in the closed environment inside the base 1 continues to increase, the suction generated by the negative pressure will be weakened synchronously. At this time, the push spring 66 will release the mechanical power, forcing the piston cleaning plate 65 to reset. In this process, the outer wall of the piston cleaning plate 65 will move downward along the inner wall of the filter square tube 63. In the process of the filter square tube 63 moving downward, the impurities remaining in the narrow mouth of the top of the horn plate 62 will be removed, so as to avoid excessive precipitation of saline-alkali substances in the narrow mouth of the horn plate 62 after long-term use of the equipment, causing blockage of the narrow mouth of the horn plate 62 and affecting the normal use of the equipment.

[0052] Utilizing the characteristic of negative pressure generating contraction force, a telescopic tube 47 is provided inside the equipment. When negative pressure is generated inside the electrical box shell 13, the telescopic tube 47 will be extended inwardly under the influence of the negative pressure. At this time, the telescopic tube 47 drives the ball bearings 48 to extend outwardly, forcing the ball bearings 48 to contact the inclined surface of the inclined plate 46. At this time, the ball bearings 48 will push the inclined plate 46 to move sideways, and the inclined plate 46 will drive the push slide bar 45 to move outward synchronously along the inner wall of the mounting plate 42, and the push slide bar 45 will drive one end of the deformation frame 44 to move outward. At the same time, the deformation frame 44 will be pulled by the push slide bar 45, forcing the two ends of the deformation frame 44 to extend outwardly. At this time, the deformation frame 44 drives the rubber block 43 to expand outwardly and completely fills the inner wall of the sealing groove 15, thereby improving the sealing between the electrical box shell 13 and the electrical box door 14 of the equipment, and avoiding the increase of negative pressure inside the electrical box shell 13, which causes air to enter the electrical box shell 13 through the gap, thereby affecting the low-pressure cooling effect of the equipment.

[0053] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high and low voltage power distribution cabinet with a protective function, comprising a base (1), the top of the base (1) is fixedly connected to a fixed square tube (12), one end of the fixed square tube (12) away from the base (1) is connected to an electric box shell (13), and the side wall of the electric box shell (13) is rotatably connected to an electric box door (14), characterized in that: Also includes: A power mechanism (2), the power mechanism (2) comprising an electric telescopic rod (21) fixedly connected to the bottom of the inner wall of the fixed square tube (12), the end of the electric telescopic rod (21) away from the base (1) is fixedly connected to a piston plate (22), the outer wall of the piston plate (22) is slidably connected to the inner wall of the fixed square tube (12), the top of the piston plate (22) is provided with an exhaust port (23), and the side wall of the electric box shell (13) is fixedly connected to a sealing component (4); A feeding mechanism (3), the feeding mechanism (3) comprising an exhaust frame (31) fixedly connected to the inner wall of the exhaust port (23), a spring sliding rod (32) slidably connected to the inner wall of the exhaust frame (31), a blocking ball (33) fixedly connected to the top of the spring sliding rod (32), a sealing cylinder (34) fixedly connected to the top of the piston plate (22), and a filter assembly (6) fixedly connected to the top of the base (1).

2. A high and low voltage distribution cabinet with protection function according to claim 1, characterized in that: The housing structure (1) further comprises a sealing groove (15) provided on the side wall of the electrical box door (14); an air outlet (16) is provided on the top of the electrical box shell (13); and an air inlet assembly (5) is installed on the inner wall of the air outlet (16).

3. A high and low voltage distribution cabinet with protection function according to claim 4, characterized in that: The air intake assembly (5) comprises an air intake rotating plate (51) rotatably connected to the inner wall of the air outlet (16); a support frame (52) is fixedly connected to the top of the inner wall of the electrical box shell (13); and a rotating plate (53) is rotatably connected to the inner wall of the support frame (52).

4. A high and low voltage distribution cabinet with protection function according to claim 5, characterized in that: The air intake assembly (5) also includes a push rod (54) rotatably connected to the inner wall of the support frame (52); one end of the push rod (54) away from the rotating plate (53) is rotatably connected to the bottom of the air intake rotating plate (51); one end of the rotating plate (53) away from the push rod (54) is rotatably connected to a pulling and telescopic rod (56); one end of the pulling and telescopic rod (56) away from the rotating plate (53) is fixedly connected to the top of the piston plate (22); and an air intake pipe (55) is fixedly connected to the inner wall of the air outlet (16).

5. The high and low voltage distribution cabinet with protection function according to claim 2 is characterized in that: The sealing assembly (4) comprises a sealing ring (41) fixedly connected to the side wall of the electrical box shell (13); a mounting plate (42) is fixedly connected to the side wall of the sealing ring (41); a rubber block (43) is fixedly connected to the side wall of the mounting plate (42); and a deformation frame (44) is rotatably connected to the side wall of the mounting plate (42).

6. A high and low voltage power distribution cabinet with protection function according to claim 3, characterized in that: The sealing assembly (4) further comprises a push slide rod (45) slidably connected to the inner wall of the through hole of the mounting plate (42); one end of the push slide rod (45) is fixedly connected to the side wall of the deformation frame (44); the end of the push slide rod (45) away from the deformation frame (44) is fixedly connected to an inclined plate (46); a telescopic tube (47) is connected through the side wall of the sealing ring (41); and the end of the telescopic tube (47) away from the sealing ring (41) is rotatably connected to a ball (48).

7. A high and low voltage power distribution cabinet with protection function according to claim 6, characterized in that: The filter assembly (6) comprises an air inlet box (61) fixedly connected to the top of the base (1); the top of the air inlet box (61) is connected through a speaker plate (62); the top of the speaker plate (62) is connected through a filter square tube (63); the inner wall of the filter square tube (63) is fixedly connected to a fixed bracket (64); the outer wall of the fixed bracket (64) is slidably connected to a piston cleaning plate (65); the top of the piston cleaning plate (65) is fixedly connected to a push spring (66); one end of the push spring (66) away from the piston cleaning plate (65) is fixedly connected to the bottom of the fixed bracket (64); and one end of the air inlet pipe (55) away from the air outlet (16) is connected through the top of the filter square tube (63).

8. A method for using a high and low voltage power distribution cabinet with protection function, using the power distribution cabinet protection device as claimed in claim 7, characterized in that: The following steps are included: S1: When using the device, ensure that the electrical box door (14) is in a tightly closed state. When the device needs to be operated, turn on the power of the electric telescopic rod (21), and the electric telescopic rod (21) generates a contraction force, driving the piston plate (22) to slide downward along the inner wall of the fixed square tube (12); S2: The space inside the electric box shell (13) and above the piston plate (22) is a closed environment. When the piston plate (22) moves downward, the space of the closed environment increases, but the gas inside remains unchanged, forcing the environment to form a low-pressure environment; S3: After the rain stops outside, the piston plate (22) continues to move downward, and the telescopic rod (56) is pulled to stretch to the longest position. At this time, the telescopic rod (56) is pulled downward through one end of the rotating plate (53), forcing the other end of the rotating plate (53) to tilt upward.

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