A kind of box-type substation moisture-proof and condensation prevention method and device

Abstract

The embodiment of the present application relates to the field of transformer substation, and more particularly to a kind of box-type transformer substation moisture-proof and condensation prevention method and device, including: pedestal, the upper surface position left and right are provided with through hole;Shell, fixedly arranged on the top of the pedestal, symmetrically arranged with mounting plate on its inner side wall, symmetrically arranged with double door on its front and back sides;Condensation sensor, mounted on the mounting plate, for monitoring the air humidity in the shell.The present application utilizes condensation sensor to monitor the humidity of air in the shell, and emits corresponding signal to the heater, and the heater is heated to dehumidify, to achieve the purpose of moisture-proof and condensation prevention, and the electric push rod is used to control the driving rod and brush roller to lift, under the meshing action of straight rack and full gear, the brush roller rotates, and the surface of condensation sensor and heater is wiped to remove dust, to ensure the inductive accuracy of condensation sensor to humidity.

Description

Technical Field

[0001] The embodiments of the present invention generally relate to the field of substations, and more specifically, to a method and apparatus for preventing moisture and condensation in a prefabricated substation. Background Technology

[0002] Prefabricated substations, also known as prefabricated transformer substations, are factory-prefabricated, compact indoor or outdoor power distribution equipment that integrates high-voltage switchgear, distribution transformers, and low-voltage power distribution devices according to a specific wiring scheme. They are particularly suitable for urban power grid construction and renovation, and can replace traditional civil engineering substations and distribution rooms, becoming a new type of complete power distribution system.

[0003] Since prefabricated substations are generally located outdoors, they are susceptible to excessive humidity due to wind and rain. Excessive humidity inside the substation can degrade the insulation performance of electrical equipment, leading to short circuits, open circuits, and other problems, severely impacting the safe operation of the equipment. Furthermore, metal components inside the prefabricated substation are prone to corrosion due to moisture, further affecting equipment efficiency and lifespan. Existing methods for preventing moisture and condensation involve using sensors to monitor the humidity inside the substation and using heaters to raise the temperature and remove moisture. However, after a period of use, dust inevitably accumulates on the surface of the sensors, which are typically located inside the substation and difficult to clean. Dust buildup reduces their sensitivity to humidity, diminishing their moisture removal effectiveness. Moreover, most existing prefabricated substations are enclosed, making it difficult for moisture to escape, causing it to accumulate inside and create a humid environment that affects the normal operation of electrical equipment. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a method and device for preventing moisture and condensation in prefabricated substations, which can remove moisture from the interior of prefabricated substations.

[0005] The technical implementation scheme of the present invention is as follows: a prefabricated substation moisture-proof and anti-condensation device, comprising: a base, wherein through holes are provided on the left and right sides of its upper surface; a housing, fixedly disposed on the top of the base, wherein mounting plates are symmetrically arranged on its inner sidewalls, and double doors are symmetrically arranged on its front and rear sides; a condensation sensor, mounted on the mounting plate, for monitoring the humidity of the air inside the housing; a heater, mounted on the mounting plate, and installed at a position higher than the condensation sensor, for use in conjunction with the condensation sensor; and a dust removal assembly, including an electric push rod, a drive rod, a brush roller, a U-shaped guide frame, a straight rack and a full gear, wherein the electric push rod is mounted on the mounting plate, and installed at a position lower than the condensation sensor, and the drive rod and... The movable end of the electric push rod is fixedly connected. The brush roller is disposed on the drive rod. The extended movable end of the electric push rod can push the drive rod upward, so that the brush roller contacts the surface of the condensation sensor and the heater. The U-shaped guide frame is mounted on the mounting plate, and its installation position corresponds to the condensation sensor and the heater. It is used to guide the lifting and lowering of the brush roller. The full gear is disposed at the end of the brush roller away from the drive rod. The spur rack is disposed on the side of the U-shaped guide frame away from the drive rod. The full gear and the spur rack mesh with each other. The brush roller is slidably connected to the U-shaped guide frame through a slider, and its rotating shaft passes through the slider and is rotatably connected to the drive rod.

[0006] As a preferred embodiment of the present invention, it further includes an L-shaped slide block, wherein a sliding groove is provided at the bottom of the housing, and the L-shaped slide block is symmetrically arranged on the housing through the sliding groove, which can cooperate with the housing to form a closed space and slide within the sliding groove on the base. The L-shaped slide block is symmetrically provided with locking holes.

[0007] As a preferred embodiment of the present invention, the L-shaped slide is provided with a support and locking assembly, which includes: a fixed sleeve, symmetrically fixedly disposed on the outer side of the L-shaped slide near the bottom; a support frame, slidably disposed within the fixed sleeve, with an insertion hole on its support rod; and a pin disposed on the fixed sleeve, capable of being inserted into the insertion hole on the support frame to restrict its position.

[0008] As a preferred embodiment of the present invention, when the L-shaped slide block slides into the housing, the support frame can be inserted into the corresponding through hole on the base; when the L-shaped slide block is pulled out, the support frame can contact the ground to support the L-shaped slide block.

[0009] As a preferred embodiment of the present invention, a ventilation assembly is provided on the top of the housing. The ventilation assembly includes: a mounting bracket, symmetrically fixedly disposed on the top of the housing; a cylinder, mounted on the mounting bracket; a support plate, fixedly connected to the output shaft of the cylinder; a vent frame, symmetrically disposed on the top of the support plate and capable of extending through the top of the housing; and a fan, installed inside the vent frame.

[0010] As a preferred embodiment of the present invention, the housing further includes a mounting base and a switching assembly. The mounting base is located in the middle of the housing. The switching assembly includes: a power connector fixedly mounted on the top of the mounting base, capable of supplying power to electrical equipment; an isolation shell located on the top of the power connector; a geared motor mounted inside the isolation shell, with its output shaft passing through the power connector; a long-toothed gear fixedly connected to the output shaft of the geared motor and located inside the power connector; a stud located at the bottom of the power connector; a rotating sleeve rotatably connected to the stud via a thread, and the rotating sleeve has an annular groove; a power connector located in the annular groove of the rotating sleeve, capable of connecting to the power connector; and a gear ring located on the outer wall of the rotating sleeve, meshing with the long-toothed gear.

[0011] As a preferred embodiment of the present invention, the power connector is rotatably engaged with the rotating sleeve through an annular groove; a guide post is provided at the top of the stud, and the power connector is slidably engaged with the stud through the guide post; when the rotating sleeve rotates clockwise / counterclockwise, it can drive the power connector to rise / fall along the guide post.

[0012] As a preferred embodiment of the present invention, the power connector is provided with a barrier component, which includes: a winding wheel, disposed on the output shaft of the geared motor, and capable of rotating under the drive of the geared motor; a sliding rod, disposed through the upper surface of the power connector and capable of sliding on the power connector, and connected to the winding wheel by a pull rope; an elastic element, disposed between the sliding rod and the power connector; and an insulating pad, disposed at the bottom of the sliding rod, capable of covering the socket of the power connector.

[0013] As a preferred embodiment of the present invention, the mounting base is provided with a locking assembly, the locking assembly comprising: a guide rod, symmetrically fixedly disposed on the mounting base; a locking block, which slides with the guide rod and can pass through the mounting base and be inserted into a locking hole on the L-shaped slide block; and a synchronous shaft, used to connect the locking blocks on the same side in series.

[0014] A method for preventing moisture and condensation in a prefabricated substation includes the following steps: S1. The condensation sensor senses the humidity inside the housing and controls the switch of the heater to heat and dehumidify the inside of the housing. The sensing part of the condensation sensor can be cleaned by the dust removal component to ensure that it can accurately sense the humidity. S2. Use the switching component to cut off the power supply to the electrical equipment, and use the blocking component to separate the power connector from the power base to ensure that the power supply is completely cut off, and pull up the block so that it no longer limits the L-shaped slide. S3. Pull up the support frame, then pull out the L-shaped slide, and open the double doors on the housing to allow the air inside the housing to interact with the outside. Use the ventilation components to accelerate the speed of air circulation and achieve the effect of ventilation and dehumidification.

[0015] Compared with the prior art, the present invention has the following advantages: 1. By setting up a condensation sensor, a heater and a dust removal component, the condensation sensor monitors the humidity of the air inside the housing and sends a corresponding signal to the heater. The heater then heats and dehumidifies the air to achieve the purpose of preventing moisture and condensation. In addition, the electric push rod controls the drive rod and the brush roller to lift and lower. Under the meshing action of the rack and pinion and the full gear, the brush roller will rotate to wipe and remove dust from the surface of the condensation sensor and the heater, ensuring the accuracy of the condensation sensor in sensing humidity. 2. With the L-shaped slide and the support locking assembly, the L-shaped slide can be pulled outward and supported by the support frame in contact with the ground, thereby allowing air exchange between the inside of the housing and the outside, expelling internal moisture to the outside. After the L-shaped slide is pulled out, it is also convenient for workers to inspect and maintain the electrical equipment. 3. By setting up the ventilation components, the cylinder lifts the vent frame and blows air in conjunction with the fan, which can accelerate the air circulation inside the shell and promote the discharge of moisture from inside the shell to the outside. 4. By setting up the switching and blocking components, before pulling the L-shaped slide outward, the geared motor drives the rotating sleeve to descend, so that the power connector is disconnected from the power base. The insulating pad is then moved between the power connector and the power base by the slide rod to further isolate the two, ensuring that the power supply is completely disconnected, which makes it safer for subsequent workers to carry out maintenance. Attached Figure Description

[0016] The above and other objects, features, and advantages of embodiments of the present invention will become more readily understood from the following detailed description with reference to the accompanying drawings. Several embodiments of the invention will be described in the drawings by way of example and in a non-limiting manner.

[0017] Figure 1 This is a front view of an exemplary embodiment of the present invention.

[0018] Figure 2This is a schematic diagram of the internal structure of the shell in an exemplary embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the dust removal component in an exemplary embodiment of the present invention.

[0020] Figure 4 This is a partial view of the dust removal component in an exemplary embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of the L-shaped slide and the support locking assembly in an exemplary embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram illustrating the positional relationship between the ventilated frame and the shell in an exemplary embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the ventilation component in an exemplary embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the power connection mechanism in an exemplary embodiment of the present invention.

[0025] Figure 9 This is a cross-sectional view of the power connector in an exemplary embodiment of the present invention.

[0026] Figure 10 This is a schematic diagram of the on / off component in an exemplary embodiment of the present invention.

[0027] Figure 11 This is a schematic diagram of the structure of the power connector and stud in an exemplary embodiment of the present invention.

[0028] Figure 12 This is a schematic diagram of the barrier component in an exemplary embodiment of the present invention.

[0029] Figure 13 for Figure 11 A bottom view.

[0030] Figure 14 This is a schematic diagram of the card slot component in an exemplary embodiment of the present invention.

[0031] Labels in the diagram: 1_Base, 2_House, 21_Mounting plate, 3_Condensation sensor, 4_Heater, 5_Dust removal assembly, 51_Electric push rod, 52_Drive rod, 53_Brush roller, 54_U-shaped guide frame, 55_Straight rack, 56_Full gear, 6_L-shaped slide, 7_Support locking assembly, 71_Fixing sleeve, 72_Support frame, 73_Pin, 8_Ventilation assembly, 81_Mounting bracket, 82_Cylinder, 83_Bearing plate, 84_Transparent Air frame, 85_fan, 9_mounting base, 10_on / off assembly, 101_electrical connector, 102_isolation shell, 103_gear motor, 104_long toothed gear, 105_gear ring, 106_swivel sleeve, 107_electric connector, 108_stud, 11_barrier assembly, 111_winding wheel, 112_slide rod, 113_elastic element, 114_insulating pad, 12_positioning assembly, 121_guide rod, 122_synchronous shaft, 123_locking block. Detailed Implementation

[0032] Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0033] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0034] Example 1: A moisture-proof and anti-condensation device for a prefabricated substation. Please refer to [link / reference]. Figures 1-3 The device includes a base 1, a housing 2, a mounting plate 21, a condensation sensor 3, and a heater 4. The base 1 supports the main body of the device and has two through holes on its upper surface, one on the left and one on the right. The housing 2 is fixedly installed on the top of the base 1. The mounting plate 21 is symmetrically fixed on its inner rear side wall and has double doors on both the front and rear sides. The condensation sensor 3 and the heater 4 are installed on the mounting plate 21. The heater 4 is positioned higher than the condensation sensor 3. The condensation sensor 3 can monitor the air humidity inside the housing 2 and send a signal to the heater 4 to control the heater 4 to start or stop.

[0035] Please see Figure 3 and Figure 4A dust removal assembly 5 is installed on the mounting plate 21. The dust removal assembly 5 includes an electric push rod 51, a drive rod 52, brush rollers 53, a U-shaped guide frame 54, a rack and pinion 55, and a full gear 56. The electric push rod 51 is installed at a lower position on the mounting plate 21, and a drive rod 52 is fixedly installed on its movable end. Two brush rollers 53 are rotatably mounted on the drive rod 52, and the distance between the two brush rollers 53 is the same as the distance between the condensation sensor 3 and the heater 4. When the movable end of the electric push rod 51 extends, it can push the drive rod 52 upward, so that the brush rollers 53 come into contact with the surfaces of the condensation sensor 3 and the heater 4. The touch, condensation sensor 3 and heater 4 are both fixedly installed with U-shaped guide frames 54. Sliders are symmetrically slidably arranged on the U-shaped guide frames 54. The brush roller 53 is rotatably connected to the slider and can slide on the U-shaped guide frame 54 through the slider. The left end of the brush roller 53 passes through the slider and is rotatably connected to the drive rod 52. A full gear 56 is fixedly arranged on the right end of the brush roller 53. A rack 55 is fixedly arranged on the right side of the U-shaped guide frame 54. The full gear 56 and the rack 55 mesh with each other. When the brush roller 53 rises or falls with the drive rod 52, the full gear 56 will rotate under the action of the rack 55.

[0036] When the condensation sensor 3 senses high humidity inside the housing 2, it sends a signal to the heater 4 and activates it. The heater 4 then operates, radiating heat outward to remove moisture from the housing 2 and keep it dry. During routine maintenance of the electrical equipment, maintenance personnel can simultaneously activate the electric push rod 51 to extend and retract, causing the brush roller 53 to rise and fall. As the brush roller 53 rises and falls, the gear 56 rolls along the rack 55, causing the brush roller 53 to rotate. When it reciprocates and contacts the surfaces of the condensation sensor 3 and the heater 4, it wipes away the accumulated dust, preventing dust accumulation from affecting the operation of the condensation sensor 3 and the heater 4.

[0037] Example II: Based on Example I, please refer to... Figure 1 , Figure 2 and Figure 5 It also includes an L-shaped slide block 6. A sliding groove is provided at the bottom of the housing 2. The L-shaped slide block 6 is located on the left and right sides of the housing 2 and can slide and cooperate with the housing 2 through the sliding groove. After sliding into the housing 2, it can cooperate with the housing 2 to form a closed space. The L-shaped slide block 6 is symmetrically provided with locking holes.

[0038] Please see Figure 1 and Figure 5The L-shaped slide block 6 is provided with a support locking assembly 7, which includes a fixing sleeve 71, a support frame 72 and a pin 73. The fixing sleeves 71 are symmetrically welded to the bottom outer side of the L-shaped slide block 6. The two fixing sleeves 71 are slidably connected to the support frame 72. The two support rods of the support frame 72 are provided with insertion holes, and the fixing sleeves 71 are provided with pins 73 that are adapted to the insertion holes. This can restrict the sliding of the support frame 72, and the support frame 72 can be inserted into the through hole on the base 1. When the L-shaped slide block 6 slides into the housing 2, it is limited and fixed, so that it cannot slide out at will.

[0039] Maintenance personnel can first pull the support frame 72 out of the through hole on the base 1 and pull the L-shaped slide 6 outward. Then, the support frame 72 slides down the fixing sleeve 71 until its bottom touches the ground. Then, the pin 73 is inserted into the socket on the support frame 72 to fix the position of the support frame 72. The support frame 72 is used to support the L-shaped slide 6 to prevent the L-shaped slide 6 from tipping over. At the same time, the double doors on the front and rear sides of the housing 2 can be opened, which can facilitate the maintenance of the power equipment and allow the outside air to circulate with the inside of the housing 2, so as to expel the moisture inside the housing 2.

[0040] Please see Figure 1 , Figure 6 and Figure 7 A ventilation assembly 8 is provided on the top of the housing 2. The ventilation assembly 8 includes a mounting bracket 81, a cylinder 82, a support plate 83, a vent frame 84, and a fan 85. The mounting bracket 81 is symmetrically arranged inside the top of the housing 2, and the cylinder 82 is mounted on it. The support plate 83 is provided on the output shaft of the cylinder 82. Two vent frames 84 are symmetrically arranged on the top of the support plate 83. The vent frames 84 can extend out of the top of the housing 2, and the fan 85 is installed inside the vent frames 84.

[0041] While ventilating the device, cylinder 82 can be activated to lift the support plate 83 upward, allowing the vent frame 84 to protrude through the top of the housing 2. At the same time, fan 85 is activated to extract air from inside the housing 2, which can accelerate the air circulation speed and further promote the discharge of moisture. When cylinder 82 retracts, the vent frame 84 can be lowered again to seal the top of the housing 2.

[0042] Example III: Based on Example II, please refer to... Figure 2 , Figure 8 , Figure 9 , Figure 10 and Figure 11The housing 2 also includes a mounting base 9 and a switching assembly 10. The mounting base 9 is located in the middle of the housing 2. The switching assembly 10 includes a power connector 101, an insulating shell 102, a geared motor 103, a long-toothed gear 104, a gear ring 105, a rotating sleeve 106, a power connector 107, and a stud 108. The power connector 101 is fixedly mounted on the top of the mounting base 9 and can be connected to electrical equipment to supply power. The insulating shell 102 is mounted on its top, and the geared motor 103 is fixedly mounted inside the insulating shell 102. The output shaft of the geared motor 103 passes through the inside of the power connector 101, and the long-toothed gear 104 is fixedly mounted at the end of its output shaft. The stud 108 is located in the middle of the inside of the power connector 101. The outer wall of the stud 108... The rotating sleeve 106 is threaded and rotatably connected to the stud 108 via the thread. A gear ring 105 is fixedly installed on the outer wall of the rotating sleeve 106. The gear ring 105 meshes with the long toothed gear 104. Driven by the reduction motor 103 and in conjunction with the meshing action of the gear ring 105 and the long toothed gear 104, the rotating sleeve 106 can rotate. When the rotating sleeve 106 rotates clockwise / counterclockwise, it can rise / fall along the stud 108. The rotating sleeve 106 is provided with an annular groove. The power connector 107 is rotatably engaged with the rotating sleeve 106 through the annular groove and can be connected to the power base 101. It can also rise and fall with the rotating sleeve 106. A guide post is provided on the top of the stud 108. The power connector 107 can slide vertically on the guide post.

[0043] Before pulling out the L-shaped slide 6, the internal electrical equipment needs to be powered off. The maintenance personnel need to start the geared motor 103 and make its output shaft rotate clockwise. Under the meshing of the long toothed gear 104 and the gear ring 105, the rotating sleeve 106 will rotate counterclockwise and descend along the stud 108. The power connector 107 will also descend under the guidance of the guide column and slowly disengage from the power base 101, thereby cutting off the power supply to the electrical equipment and ensuring the safety of the maintenance personnel.

[0044] Please refer to 8. Figure 12 and Figure 13The junction box 101 is equipped with a barrier component 11, which includes a winding wheel 111, a slide rod 112, an elastic element 113, and an insulating pad 114. The winding wheel 111 is mounted on the output shaft of the geared motor 103 and can rotate synchronously with the output shaft of the geared motor 103. A pull rope is wound on the winding wheel 111. The elastic element 113 is a spring. The slide rod 112 passes through the junction box 101 and is slidably connected to the junction box 101 through the elastic element 113. The movable end of the pull rope on the winding wheel 111 is fixedly connected to the upper half of the slide rod 112. An insulating pad 114 is fixedly mounted on the lower end of the slide rod 112. When the geared motor 103 drives the winding wheel 111 to rotate clockwise, it can wind up the pull rope and pull the slide rod 112 to slide back and forth, and drive the insulating pad 114 to slide to the power connector 107 and the junction box 101 to further isolate the two.

[0045] Please see Figure 8 and Figure 14 The mounting base 9 is equipped with a locking assembly 12, which includes a guide rod 121, a synchronous shaft 122, and locking blocks 123. The guide rod 121 is symmetrically fixed on the mounting base 9 by bolts, and locking blocks 123 are slidably mounted on both ends of the guide rod 121. The locking blocks 123 can pass through the mounting base 9 and be inserted into the locking holes on the L-shaped slide block 6 to further fix the L-shaped slide block 6. There are two synchronous shafts 122, which are set across the two guide rods 121 and are fixedly connected to the two locking blocks 123 on the same side. When it is necessary to pull out the L-shaped slide block 6, it is only necessary to pull up the synchronous shaft 122 to lift up the two locking blocks 123 on the same side at the same time, making the operation more convenient for maintenance personnel.

[0046] A method for preventing moisture and condensation in a prefabricated substation includes the following steps: S1. The condensation sensor 3 senses the air humidity inside the housing 2 and controls the switch of the heater 4. When the humidity inside the housing 2 is higher than the predetermined value, the heater 4 is started to heat and dehumidify. The electric push rod 51 can be activated to push the drive rod 52 and the brush roller 53 to rise and fall. In conjunction with the rack 55 and the full gear 56, the brush roller 53 rotates while rising and falling to wipe the dust on the surface of the condensation sensor 3 and the heater 4, ensuring the monitoring accuracy of the condensation sensor 3. S2. Using the geared motor 103 in conjunction with the long-toothed gear 104 and the gear ring 105, the rotating sleeve 106 is driven to rotate and descend along the stud 108, causing the energized connector 107 to disconnect from the power base 101. At the same time, the winding wheel 111 winds up the pull rope, pulling the slide rod 112 and the insulating pad 114 backward. The insulating pad 114 isolates the energized connector 107 from the power base 101, cutting off the power supply to the electrical equipment. The synchronous shaft 122 is also pulled up, so that the locking block 123 no longer limits the L-shaped slide 6. S3. Pull the support frame 72 out of the through hole of the base 1 and pull out the L-shaped slide 6. Through the engagement of the pin 73 and the fixing sleeve 71, the support frame 72 is grounded and supports the L-shaped slide 6. Then, open the double door on the housing 2 and start the cylinder 82 to push the vent frame 84 out of the housing 2. Then, start the fan 85 to extract the air inside the housing 2, realize the circulation with the outside air, and discharge the moisture inside the housing 2 to achieve the effect of ventilation and dehumidification.

[0047] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

[0048] The above are merely optional embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A moisture-proof and anti-condensation device for a prefabricated substation, characterized in that, include: The base (1) has through holes on its upper surface, located on the left and right sides; The housing (2) is fixedly installed on the top of the base (1), and the inner side wall is symmetrically provided with mounting plates (21), and the front and rear sides are symmetrically provided with double doors; A condensation sensor (3) is installed on the mounting plate (21) and is used to monitor the air humidity inside the housing (2); The heater (4) is installed on the mounting plate (21) and is installed at a position higher than the condensation sensor (3) and is used in conjunction with the condensation sensor (3); The dust removal assembly (5) includes an electric push rod (51), a drive rod (52), a brush roller (53), a U-shaped guide frame (54), a rack and pinion (55), and a full gear (56). The electric push rod (51) is mounted on the mounting plate (21) and its mounting position is lower than that of the condensation sensor (3). The drive rod (52) is fixedly connected to the movable end of the electric push rod (51). The brush roller (53) is disposed on the drive rod (52). The extension of the movable end of the electric push rod (51) can push the drive rod (52) upward, thereby raising the brush roller (53). The U-shaped guide frame (54) is mounted on the mounting plate (21) and its installation position corresponds to that of the condensation sensor (3) and the heater (4) to guide the lifting and lowering of the brush roller (53). The full gear (56) is located at one end of the brush roller (53) away from the drive rod (52), and the straight rack (55) is located on the side of the U-shaped guide frame (54) away from the drive rod (52). The full gear (56) and the straight rack (55) mesh with each other. The brush roller (53) is slidably connected to the U-shaped guide frame (54) via a slider, and its rotating shaft passes through the slider and is rotatably connected to the drive rod (52).

2. The moisture-proof and anti-condensation device for a prefabricated substation as described in claim 1, characterized in that, It also includes an L-shaped slide (6), with a sliding groove provided at the bottom of the housing (2). The L-shaped slide (6) is symmetrically arranged on the housing (2) through the sliding groove, and can cooperate with the housing (2) to form a closed space. It can slide in the sliding groove on the housing (2). The L-shaped slide (6) has symmetrically provided locking holes.

3. The moisture-proof and anti-condensation device for a prefabricated substation as described in claim 2, characterized in that, A support locking assembly (7) is provided on the L-shaped slide (6), the support locking assembly (7) comprising: The fixing sleeve (71) is symmetrically fixed on the outside of the L-shaped slide (6) near the bottom; The support frame (72) is slidably disposed in the fixed sleeve (71), and its support rod is provided with an insertion hole; A pin (73) is provided on the fixing sleeve (71) and can be inserted into the socket on the support frame (72) to restrict its position.

4. The moisture-proof and anti-condensation device for a prefabricated substation as described in claim 3, characterized in that, When the L-shaped slide (6) slides into the housing (2), the support frame (72) can be inserted into the corresponding through hole on the base (1); when the L-shaped slide (6) is pulled out, the support frame (72) can contact the ground to support the L-shaped slide (6).

5. A moisture-proof and anti-condensation device for a prefabricated substation as described in claim 1, characterized in that, A ventilation assembly (8) is provided on the top of the housing (2), the ventilation assembly (8) comprising: Mounting bracket (81) is symmetrically fixedly disposed at the top of the housing (2); Cylinder (82) is mounted on the mounting bracket (81); The support plate (83) is fixedly connected to the output shaft of the cylinder (82); A breathable frame (84) is symmetrically arranged on the top of the support plate (83) and can extend through the top of the shell (2); The fan (85) is installed inside the ventilation frame (84).

6. A moisture-proof and anti-condensation device for a prefabricated substation as described in claim 4, characterized in that, The housing (2) is also provided with a mounting base (9) and a switching component (10), and the mounting base (9) is located in the middle of the housing (2); The on / off component (10) includes: The power connector (101) is fixedly installed on the top of the mounting base (9) and can supply power to the electrical equipment; An insulating shell (102) is disposed on the top of the power connector (101); A geared motor (103) is installed inside the isolation housing (102), and its output shaft passes through the electrical connector (101); The long-toothed gear (104) is fixedly connected to the output shaft of the geared motor (103) and is located inside the electrical connector (101); A stud (108) is disposed at the bottom of the electrical connector (101); The rotating sleeve (106) is rotatably connected to the stud (108) by a thread, and the rotating sleeve (106) is provided with an annular groove; A power connector (107) is disposed in the annular groove of the rotating sleeve (106) and can be connected to the power socket (101); A gear ring (105) is disposed on the outer side wall of the rotating sleeve (106) and meshes with the long-toothed gear (104).

7. A moisture-proof and anti-condensation device for a prefabricated substation as described in claim 6, characterized in that, The power connector (107) is rotatably engaged with the rotating sleeve (106) through an annular groove; a guide post is provided on the top of the stud (108), and the power connector (107) is slidably engaged with the stud (108) through the guide post. When the rotating sleeve (106) rotates clockwise / counterclockwise, it can drive the power connector (107) to rise / fall along the guide post.

8. A moisture-proof and anti-condensation device for a prefabricated substation as described in claim 7, characterized in that, The junction box (101) is provided with a barrier component (11), the barrier component (11) comprising: The winding wheel (111) is mounted on the output shaft of the geared motor (103) and can rotate under the drive of the geared motor (103); A slide bar (112) is provided through the upper surface of the power base (101) and can slide on the power base (101), and is connected to the winding wheel (111) by a pull rope; An elastic element (113) is disposed between the slide rod (112) and the electrical connector (101); An insulating pad (114) is provided at the bottom of the slide bar (112) and can cover the socket of the electrical connector (101).

9. A moisture-proof and anti-condensation device for a prefabricated substation as described in claim 6, characterized in that, The mounting base (9) is provided with a locking component (12), the locking component (12) comprising: Guide rods (121) are symmetrically fixed on the mounting base (9); The locking block (123) slides with the guide rod (121) and can pass through the mounting base (9) and be inserted into the locking hole on the L-shaped slide (6); Synchronous shaft (122) is used to connect the card blocks (123) on the same side in series.

10. A method for preventing moisture and condensation in a prefabricated substation, characterized in that, The device employing the prefabricated substation moisture-proof and anti-condensation device as described in claims 1-9 includes the following steps: S1. The condensation sensor (3) senses the air humidity inside the housing (2) and controls the switch of the heater (4) to heat and dehumidify the inside of the housing (2). The sensing part of the condensation sensor (3) can be cleaned by the dust removal component (5) to ensure that it can accurately sense the humidity. S2. Use the switching component (10) to cut off the power supply of the electrical equipment, and use the blocking component (11) to separate the power connector (107) from the power base (101) to ensure that the power supply is completely cut off, and pull up the block (123) so that it no longer limits the L-shaped slide (6); S3. Pull up the support frame (72), then pull out the L-shaped slide (6) and open the double door on the housing (2) to allow the air inside the housing (2) to interact with the outside, and use the ventilation component (8) to accelerate the speed of air circulation and interaction to achieve the effect of ventilation and dehumidification.

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