A rainfall simulation device for evaluating moisture damage to power equipment

Abstract

The invention relates to the technical field of research and analysis of electric equipment, and in particular to a rainfall simulation device for evaluating the moisture damage to electric equipment; the device comprises a water tank and a detection box located on the upper part of the water tank; a support frame which can be opened and closed is arranged at the bottom of the detection box, and the water tank is connected with the upper part of the support frame, so as to perform a simulated immersion operation on the electric equipment; a moving component is arranged at the top of the detection box, and a rotating water spray component is connected to the bottom of the moving component; a fan component is connected to the side wall of the detection box, and the rotating water spray component and the fan component are opened together to simulate different rainfall modes; the device can simulate the effect of rain falling in the case of wind, can adjust the size and direction of the wind volume, and can also perform a immersion simulation test on the lower end of the electric equipment under detection; the device simulates the diversity of rainfall and improves the comprehensiveness of detection.

Description

Technical Field

[0001] The invention relates to the technical field of research and analysis of electric power equipment, and relates to a rainfall simulation device used for moisture evaluation of electric power equipment. Background Art

[0002] The moisture assessment of power equipment is an important task in the power industry. It can help evaluate the durability, insulation performance and operating stability of equipment in humid environments. By simulating real rainfall conditions, it can detect whether the equipment has leakage, insulation degradation, corrosion and other problems, so as to take timely measures for repair and maintenance to ensure the reliability and safety of the equipment and improve the power supply quality and service level. This is crucial for the normal operation of the power system and the safety of users' electricity use. Existing rainfall simulation equipment generally uses simple water spraying devices to simulate rainfall conditions. These devices are usually composed of nozzles and water pumps, which can produce water droplets of different intensities and frequencies. However, the rainfall simulation equipment simulates rainfall in a relatively simple manner and cannot fully simulate the rainfall in nature, such as the rain falling obliquely in a storm, and some rain falling disorderly, so that the device cannot fully reflect the ability of power equipment to resist moisture outdoors. Therefore, it is necessary to improve and deal with the above problems. Summary of the invention

[0003] The present invention overcomes the shortcomings of the prior art and provides a rainfall simulation device for evaluating moisture exposure of electric power equipment.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0005] A rainfall simulation device for evaluating the moisture of electric power equipment comprises a water tank and a detection box located on the upper part of the water tank; a support frame is arranged on the inner bottom surface of the detection box, and the electric power equipment is placed on the support frame; a plurality of sealing plate devices are arranged on the support frame at intervals, each of which comprises a first sealing plate and a second sealing plate, one side of the first sealing plate and the second sealing plate are tightly fitted and arranged to isolate the electric power equipment on the upper part of the support frame from the water tank, and the other long sides of the first sealing plate and the second sealing plate are respectively rotatably connected to the bottom surface of the support frame; the top of the first sealing plate and the second sealing plate Both ends of the side where the surface is rotatably connected to the support bracket are provided with inverted T-shaped grooves, and a hinge seat is slidably connected in the inverted T-shaped groove. A push rod is rotatably connected between two hinge seats on the same side of the first sealing plate and the second sealing plate. A screw is rotatably connected to the upper end of the push rod on one side, and the screw is threadedly connected to the support bracket. A second guide rod is fixedly connected to the top surface of the push rod on the other side, and the second guide rod is slidably connected to the support bracket. When the side where the first sealing plate and the second sealing plate are fitted is opened, the water tank is connected to the upper side of the support bracket for performing immersion simulation operation on the power equipment.

[0006] A moving assembly is arranged on the top of the detection box, and a rotating water spray assembly is connected to the bottom of the moving assembly; a fan assembly is connected to the side wall of the detection box, and the rotating water spray assembly and the fan assembly are turned on together to simulate different rainfall modes.

[0007] Furthermore, a connecting plate is installed on the top surface of the water tank, and the detection box is installed on the top surface of the connecting plate; a water guide port is opened on the top surface of the connecting plate.

[0008] Furthermore, it includes a base, the water tank is an inverted trapezoidal structure, the bottom of the water tank abuts against the base, and a support column is vertically fixed to the outer side of the upper bottom of the water tank, and the bottom of the support column is fixed to the base; a filter is provided at the upper end of the water tank.

[0009] Furthermore, the moving assembly includes a first guide rod, a bidirectional screw, a first stepper motor and a supporting plate; the four ends of the top surface of the detection box are fixedly connected to connecting seats, and connecting holes are provided on the connecting seats; a first guide rod is fixedly connected between the two connecting seats on the front side of the detection box, and a bidirectional screw is rotatably connected between the two connecting seats on the rear side of the detection box, and one side of the bidirectional screw is connected to the output shaft of the first stepper motor; the supporting plate is a strip-shaped ring structure, one end of the supporting plate is sleeved on the first guide rod, and the other end of the supporting plate is threadedly connected to the bidirectional screw; the rotating water spray assembly is connected to the supporting plate.

[0010] Furthermore, the rotary water spray assembly includes a second stepper motor and a connecting block; a second stepper motor is installed on the top surface of the supporting plate, the output shaft of the second stepper motor passes through the supporting plate, a guide tube is provided at the lower end of the supporting plate, a flange is fixedly connected to the top surface of the guide tube, the top surface of the flange is fixedly connected to the output shaft of the second stepper motor, and a connecting block is fixedly connected to the bottom surface of the guide tube, a water storage cavity is provided inside the connecting block; a plurality of equidistant watering ports are provided on the bottom surface of the connecting block; a plurality of equidistant water guide ports are provided on the outside of the guide tube, and a rotating block is rotatably connected to the outside of the guide tube, a movable cavity is provided inside the rotating block, a connecting tube is fixedly connected to one end of the rotating block, and a water outlet pipe is connected to the other end of the connecting tube.

[0011] Furthermore, the water outlet pipe is connected to a water pump; a water inlet pipe is installed at one end of the water pump; the water inlet pipe is connected to the water tank; and a filter element is arranged inside the water inlet pipe.

[0012] Furthermore, the fan assembly includes fans arranged on both sides of the upper end of the base, and the fan is connected to a fixed block on one side adjacent to the interior of the detection box. The fixed block is installed on the inner side wall of the detection box, and an installation groove is opened inside the fixed block; the fixed block is installed with multiple equidistant air ducts through the installation groove; a baffle is fixedly connected to the inner bottom surface of the air duct, which is used to block rainwater.

[0013] Furthermore, a baffle is provided in the air duct, and the multiple air ducts are divided into two groups, the upper and lower groups of baffles are respectively connected by a set of hinge devices to achieve linkage. The hinge device includes a connecting rod and a hinged rod. Connecting rods are fixed on both sides of each baffle, and a hinged rod is sleeved between two adjacent connecting rods in each group; the rotation of the upper and lower groups of baffles is controlled by controlling the corresponding hinged rods.

[0014] Furthermore, a T-shaped slot is provided in the middle of the baffle at the top of the upper group and the baffle at the bottom of the lower group. A movable seat is provided in the T-shaped slot. An electric rod is movably hinged at one end of the movable seat, and the electric rod is used to push the baffle. The two electric rods are respectively installed on the top and bottom surfaces of the fixed block. The baffle is used to adjust the opening size of the air duct to adjust the air volume.

[0015] Furthermore, sensors are installed on both sides of the top surface of the detection box. The sensors are connected to humidity detectors through wires, and the humidity detectors are used to detect the humidity in the power equipment.

[0016] The beneficial effects of the present invention compared with the prior art are as follows:

[0017] The present invention can realize the recycling of rainwater and save water resources through the cooperation of the water tank and the water pump; through the cooperation of the filter screen and the filter element, it is convenient to filter out relatively clean water to avoid clogging of various components and thus reducing the detection effect; through the cooperation of the fan and the air duct, it is convenient to blow air into the detection box, thereby simulating the effect of rain falling in the wind; through the cooperation of the baffle plate and the electric rod, the wind direction and wind volume can be adjusted; through the cooperation of the first stepper motor and the second stepper motor, it is convenient to simulate the disorderly falling of rainwater, so that rainwater falls on every part of the power equipment, which is convenient for detecting the moisture effect of various positions of the power equipment; through the cooperation of the screw and the push rod, it is convenient to control the movement of the first sealing plate and the second sealing plate, so as to seal the support bracket and then immerse the lower end of the power equipment under detection; the device simulates the diversity of rainfall and improves the comprehensiveness of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure inside the detection box of the present invention;

[0021] Figure 4 The overall cross-sectional three-dimensional structure of the present invention is schematically shown. Figure 1 ;

[0022] Figure 5The overall cross-sectional three-dimensional structure of the present invention is schematically shown. Figure 2 ;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the rainfall component of the present invention;

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the rainfall assembly of the present invention;

[0025] Figure 8 It is a partial structural schematic diagram of the regulating component of the present invention;

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the support frame of the present invention;

[0027] Fig.10 It is a schematic diagram of the cross-sectional three-dimensional structure of the support frame of the present invention;

[0028] Fig.11 For the present invention Figure 4 A schematic diagram of the enlarged structure of the middle A part;

[0029] Serial number in the picture:

[0030] 1. Base; 2. Water tank; 3. Support column; 4. Filter; 5. Connecting plate; 6. Detection box; 7. Box door; 8. Connecting seat; 9. First guide rod; 10. Bidirectional screw rod; 11. First stepper motor; 12. Support plate; 13. Second stepper motor; 14. Flange; 15. Guide pipe; 16. Rotating block; 17. Connecting block; 18. Connecting pipe; 19. Outlet pipe; 20. Water pump; 21. Inlet pipe; 22. Filter element; 23. Fan; 24. Fixed block; 25. Air duct; 26. Baffle; 27. Baffle; 28. Electric rod; 29. ​​Moving seat; 30. Connecting rod; 31. Articulated rod; 32. Sensor; 33. Humidity detector; 34. Supporting bracket; 35. First closing plate; 36. Second closing plate; 37. Articulated seat; 38. Push rod; 39. Screw; 40. Second guide rod. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0032] See also Figures 1 to 11The present embodiment proposes a rainfall simulation device for evaluating moisture damage to power equipment, including a base 1 and a detection box 6. A water tank 2 is provided at the upper end of the base 1. The water tank 2 is an inverted trapezoidal structure and is used to collect and supply water. A filter screen 4 is provided at the upper end of the water tank 2 to facilitate filtering out debris. Both sides of the filter screen 4 penetrate the water tank 2. The bottom of the water tank 2 abuts against the base 1, and a support column 3 is vertically fixed to the outer side of the upper bottom of the water tank 2, and the water tank 2 is stably supported by the support column 3. The bottom of the support column 3 is fixed to the base 1.

[0033] A connecting plate 5 is installed on the top surface of the water tank 2, and a detection box 6 is installed on the top surface of the connecting plate 5; a water guide port is opened on the top surface of the connecting plate 5, and the cross-section of the water guide port is an inverted trapezoid; a box door 7 is vertically provided at the front end of the detection box 6, and one side of the box door 7 is movably hinged to the front end surface of the detection box 6; the detection box 6 is used to place electrical equipment that needs to be tested.

[0034] A moving assembly is provided on the top of the detection box 6, and a rotating water spray assembly is connected to the bottom of the moving assembly; a fan assembly is connected to the side wall of the detection box 6, and the rotating water spray assembly and the fan assembly are turned on together to simulate different rainfall modes.

[0035] The moving assembly includes a first guide rod 9, a bidirectional screw rod 10, a first stepper motor 11 and a support plate 12; the four ends of the top surface of the detection box 6 are fixedly connected with a connecting seat 8, and the connecting seat 8 is provided with a connecting hole; the first guide rod 9 is fixedly connected between the two connecting seats 8 on the front side of the detection box 6, and the bidirectional screw rod 10 is rotatably connected between the two connecting seats 8 on the rear side of the detection box 6, one side of the bidirectional screw rod 10 is connected to the output shaft of the first stepper motor 11, and the first stepper motor 11 is used to rotate the bidirectional screw rod 10; the first stepper motor 11 is installed on the connecting seat 8 on one side. The support plate 12 is a strip-shaped ring structure, one end of the support plate 12 is sleeved on the first guide rod 9, and the other end of the support plate 12 is threadedly connected to the bidirectional screw rod 10.

[0036] The rotary water spray assembly includes a second stepper motor 13 and a connecting block 17; the second stepper motor 13 is installed in the middle of the top surface of the supporting plate 12, the output shaft of the second stepper motor 13 passes through the supporting plate 12, and a guide tube 15 is provided at the lower end of the supporting plate 12; a flange 14 is fixedly connected to the top surface of the guide tube 15, the top surface of the flange 14 is fixedly connected to the output shaft of the second stepper motor 13, and a connecting block 17 is fixedly connected to the bottom surface of the guide tube 15, a water storage cavity is provided inside the connecting block 17 for storing water; and a plurality of equidistant watering ports are provided on the bottom surface of the connecting block 17; A plurality of equidistant water guide ports are provided on the outside of the guide tube 15, and a rotating block 16 is rotatably connected to the outside of the guide tube 15, a movable cavity is provided inside the rotating block 16, a connecting tube 18 is fixedly connected to one end of the rotating block 16, and a water outlet pipe 19 is connected to the other end of the connecting tube 18; a water pump 20 is connected to the other end of the water outlet pipe 19; the water pump 20 is installed at the rear end of the top surface of the base 1, and a water inlet pipe 21 is installed at one end of the water pump 20; the other end of the water inlet pipe 21 is connected to the water tank 2; a filter element 22 is provided inside the water inlet pipe 21, and the filter element 22 is used to prevent the water inlet pipe 21 from being blocked.

[0037] like Figure 4 , Figure 8 , Fig. 9 As shown, the fan assembly includes a fan 23, which is used to simulate a storm mode; the fan 23 is installed at the upper ends of both sides of the detection box 6, and a fixed block 24 is connected to a side adjacent to the inside of the detection box 6, the fixed block 24 is installed on the inner side wall of the detection box 6, and a mounting groove is opened inside the fixed block 24; a plurality of equidistant air ducts 25 are installed on the fixed block 24 through the mounting groove; a baffle 26 is fixedly connected to the inner bottom surface of the air duct 25, and the baffle 26 is used to block rainwater; a baffle 27 is provided in the air duct 25, and the plurality of air ducts 25 are divided into two groups, the upper and lower groups of baffles 27 are respectively connected by a set of hinge devices to realize linkage, in this embodiment, the upper group of baffles 27 and the lower group of baffles 27 each include three baffles 27, the hinge device includes a connecting rod 30 and a hinge rod 31, each baffle 27 is fixedly connected to a connecting rod 30 on both sides, and a hinge rod 31 is sleeved between two adjacent connecting rods 30 in each group. The rotation of the upper and lower groups of baffles 27 can be controlled respectively by controlling the corresponding hinged rods 31; the baffle 27 located at the top of the upper group and the baffle 27 located at the bottom of the lower group are both provided with T-slots in the middle, and a movable seat 29 is provided in the T-slot, and an electric rod 28 is movably hinged at one end of the movable seat 29, and the electric rod 28 is used to facilitate pushing the baffle 27; the two electric rods 28 are respectively mounted on the top and bottom surfaces of the fixed block 24; the opening size of the air duct 25 is conveniently adjusted through the baffle 27 to adjust the air volume; sensors 32 are installed on both sides of the top surface of the detection box 6, and the sensor 32 is connected to a humidity detector 33 through a wire, and is used to detect the humidity in the power equipment through the humidity detector 33, and the model of the humidity detector 33 is RS485 / 4-20ma.

[0038] A support frame 34 is provided on the bottom surface of the detection box 6, and the support frame 34 is used to support the power equipment; the support frame 34 abuts on the top surface of the connecting plate 5; a plurality of sealing plate devices are arranged in the horizontal intervals in the support frame 34, each of which includes a first sealing plate 35 and a second sealing plate 36 of the same strip structure, and the support frame 34 is sealed by the first sealing plate 35 and the second sealing plate 36; the long sides of one side of the first sealing plate 35 and the second sealing plate 36 are tightly fitted, and the long sides of the other side of the first sealing plate 35 and the second sealing plate 36 are respectively rotatably connected to the support frame 3 4; both ends of the first sealing plate 35 and the second sealing plate 36 on the top surface of the side where the support bracket 34 is rotatably connected are provided with an inverted T-shaped groove, and a hinge seat 37 is slidably connected in the inverted T-shaped groove, and a push rod 38 is rotatably connected between the two hinge seats 37 on the same side of the first sealing plate 35 and the second sealing plate 36, and a screw rod 39 is rotatably connected to the upper end of the push rod 38 on one side, and the screw rod 39 is threadedly connected to the support bracket 34, and a second guide rod 40 is fixedly connected to the top surface of the push rod 38 on the other side, and the second guide rod 40 penetrates and is slidably connected to the support bracket 34.

[0039] A method for using a rainfall simulation device for evaluating moisture exposure of electric power equipment comprises the following steps:

[0040] Step 1, first connect all electrical equipment to the wires and power on, then open the box door 7 at the front end of the detection box 6, put the electrical equipment to be tested on the support frame 34 in the detection box 6, and then close the box door 7; when it is necessary to do a normal rainfall test, turn on the water pump 20, pump the water in the water tank 2 into the water inlet pipe 21, supply water to the connecting pipe 18 through the water inlet pipe 21, and then transfer the water in the connecting pipe 18 to the guide pipe 15 through the transfer block 16, guide the water to the connecting block 17 through the guide pipe 15, and then lead the water out through the guide port opened on the bottom surface of the connecting block 17, thereby simulating a rainfall environment.

[0041] Step 2, when a more obvious rainfall effect is required, start the first stepper motor 11 and the second stepper motor 13, the output shaft of the first stepper motor 11 is connected to the bidirectional screw 10, when the first stepper motor 11 is started, the bidirectional screw 10 is controlled to rotate, and then the bidirectional screw 10 and the supporting plate 12 are threadedly connected, and the other end of the supporting plate 12 is sleeved on the first guide rod 9, when the bidirectional screw 10 rotates, the movement of the supporting plate 12 is controlled, and then the movement of the second stepper motor 13 and the connecting block 17 connected to the supporting plate 12 is controlled, thereby simulating the movement of rainwater; when the second stepper motor 13 is started, the output shaft of the second stepper motor 13 and the guide tube 15 are connected through the flange 14, thereby controlling the rotation of the connecting block 17 at the lower end, thereby controlling the disorderly falling of rainwater.

[0042] Step three, when it is necessary to simulate the situation of rain in wind, start the fan 23. When the fan 23 is started, it will blow air into the detection box 6, thereby blowing the rain, and then controlling the rain to fall obliquely. When the wind speed needs to be increased, start the electric rod 28 at the upper or lower end, and slide the moving seat 29 in the T-slot, and then control the moving seat 29 to be movably hinged with the electric rod 28, so as to control the moving seat 29 to slide in the T-slot, thereby controlling the baffle 27 to rotate in the installation slot, and the opening sizes of the upper and lower groups of air ducts 25 can be adjusted respectively, so as to control the wind volume in different directions up and down respectively, thereby completing the real-time simulation operation of storm rainfall conditions.

[0043] Step 4, when it is necessary to immerse the electrical equipment to be tested, the screw rod 39 is rotated downward, and the screw rod 39 is threadedly connected to the support bracket 34, so as to lift the control push rod 38 downward. Since the two ends of the push rod 38 are movably hinged with the hinge seat 37, the hinge seat 37 is slidably connected in the inverted T-shaped grooves provided on the top surfaces of the first sealing plate 35 and the second sealing plate 36, and the first sealing plate 35 and the second sealing plate 36 are rotatably connected to the support bracket 34; so when the push rod 38 descends, the hinge seat 37 slides downward along the inclined surface of the inverted T-shaped groove, and at the same time, the hinge seat 37 rotates relative to the push rod 38. At this time, the proximal ends of the first sealing plate 35 and the second sealing plate 36 are rotated downward to open, and water enters the top of the support bracket 34 through the water guide port of the connecting plate 5, creating an immersion environment for the electrical equipment. When the immersion test is completed, the water is drained, and the first sealing plate 35 and the second sealing plate 36 are closed, thereby sealing the bottom surface of the support bracket 34.

[0044] Step five, when the rainfall is completed, remove the humidity detector 33 on the upper end of the detection box 6 and place it inside the electrical equipment to be tested, so as to detect the moisture content inside, and upload it to the computer through the sensor 32, so as to understand whether the inside of the electrical equipment is humid, and thus know whether the electrical equipment has been tested to meet the standards; when the test is completed, all electrical equipment will be powered off.

[0045] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A rainfall simulation device for evaluating moisture exposure of power equipment, characterized in that: The invention comprises a water tank (2) and a detection box (6) located on the upper part of the water tank (2); a support frame (34) is arranged on the inner bottom surface of the detection box (6), and the electric power equipment is placed on the support frame (34); a plurality of sealing plate devices are arranged on the support frame (34) at intervals, and each sealing plate device comprises a first sealing plate (35) and a second sealing plate (36); one side of the first sealing plate (35) and the second sealing plate (36) are tightly fitted and arranged to isolate the electric power equipment on the upper part of the support frame (34) from the water tank (2); the other long sides of the first sealing plate (35) and the second sealing plate (36) are respectively rotatably connected to the bottom surface of the support frame (34); the top surfaces of the first sealing plate (35) and the second sealing plate (36) are rotatably connected to the support frame (34) Both ends of one side of the connection are provided with an inverted T-shaped groove, and a hinge seat (37) is slidably connected in the inverted T-shaped groove. A push rod (38) is rotatably connected between two hinge seats (37) located on the same side of the first sealing plate (35) and the second sealing plate (36). A screw rod (39) is rotatably connected to the upper end of the push rod (38) on one side, and the screw rod (39) is threadedly connected to the support frame (34). A second guide rod (40) is fixedly connected to the top surface of the push rod (38) on the other side, and the second guide rod (40) is slidably connected to the support frame (34). When one side where the first sealing plate (35) and the second sealing plate (36) are closely arranged is opened, the water tank (2) is connected to the upper side of the support frame (34), so as to perform a simulated immersion operation on the power equipment. A moving assembly is arranged on the top of the detection box (6), and a rotating water spray assembly is connected to the bottom of the moving assembly; a fan assembly is connected to the side wall of the detection box (6), and the rotating water spray assembly and the fan assembly are turned on together to simulate different rainfall modes; The moving assembly comprises a first guide rod (9), a bidirectional screw rod (10), a first stepper motor (11) and a supporting plate (12); the four ends of the top surface of the detection box (6) are fixedly connected to connecting seats (8), and the connecting seats (8) are provided with connecting holes; the first guide rod (9) is fixedly connected between the two connecting seats (8) on the front side of the detection box (6), and the bidirectional screw rod (10) is rotatably connected between the two connecting seats (8) on the rear side of the detection box (6), and one side of the bidirectional screw rod (10) is connected to the output shaft of the first stepper motor (11); the supporting plate (12) is in a strip-shaped ring structure, one end of the supporting plate (12) is sleeved on the first guide rod (9), and the other end of the supporting plate (12) is threadedly connected to the bidirectional screw rod (10); the rotating water spray assembly is connected to the supporting plate (12); The rotary water spraying assembly comprises a second stepper motor (13) and a connecting block (17); the second stepper motor (13) is mounted on the top surface of the supporting plate (12); the output shaft of the second stepper motor (13) passes through the supporting plate (12); a guide tube (15) is provided at the lower end of the supporting plate (12); a flange (14) is fixedly connected to the top surface of the guide tube (15); the top surface of the flange (14) is fixedly connected to the output shaft of the second stepper motor (13); a connecting block (17) is fixedly connected to the bottom surface of the guide tube (15); a water storage cavity is provided inside the connecting block (17); a plurality of equidistant water sprinkling ports are provided on the bottom surface of the connecting block (17); a plurality of equidistant water guide ports are provided on the outside of the guide tube (15); a rotating block (16) is rotatably connected to the outside of the guide tube (15); a movable cavity is provided inside the rotating block (16); a connecting tube (18) is fixedly connected to one end of the rotating block (16); and a water outlet pipe (19) is connected to the other end of the connecting tube (18); The fan assembly comprises fans (23) arranged on both sides of the upper end of the base (1); a fixed block (24) is connected to a surface of the fan (23) adjacent to the inside of the detection box (6); the fixed block (24) is mounted on the inner side wall of the detection box (6), and a mounting groove is provided inside the fixed block (24); a plurality of equidistant air ducts (25) are mounted on the fixed block (24) through the mounting groove; a retaining bar (26) is fixedly connected to the inner bottom surface of the air duct (25), and the retaining bar (26) is used to block rainwater; A baffle (27) is provided in the air guide duct (25). The plurality of air guide ducts (25) are divided into two groups, an upper group and an lower group. The baffles (27) in the upper and lower groups are respectively connected by a set of hinge devices to realize linkage. The hinge devices include a connecting rod (30) and a hinge rod (31). Both sides of each baffle (27) are fixedly connected with a connecting rod (30). A hinge rod (31) is sleeved between two adjacent connecting rods (30) in each group. The rotation of the upper and lower groups of baffles (27) is respectively controlled by controlling the corresponding hinge rods (31). The baffle plate (27) at the top of the upper group and the baffle plate (27) at the bottom of the lower group are both provided with a T-shaped slot in the middle, and a movable seat (29) is provided in the T-shaped slot. An electric rod (28) is movably hinged at one end of the movable seat (29), and the baffle plate (27) is pushed by the electric rod (28); the two electric rods (28) are respectively mounted on the top surface and the bottom surface of the fixed block (24); the opening size of the air guide pipe (25) is adjusted by the baffle plate (27) to adjust the air volume.

2. A rainfall simulation device for evaluating moisture exposure of electric power equipment according to claim 1, characterized in that: A connecting plate (5) is installed on the top surface of the water tank (2), and the detection box (6) is installed on the top surface of the connecting plate (5); and a water guide port is provided on the top surface of the connecting plate (5).

3. A rainfall simulation device for evaluating moisture exposure of electric power equipment according to claim 2, characterized in that: The water tank (2) comprises a base (1), the water tank (2) being of an inverted trapezoidal structure, the bottom of the water tank (2) being in contact with the base (1), and a support column (3) being vertically fixedly connected to the outer side of the upper bottom of the water tank (2), the bottom of the support column (3) being fixedly connected to the base (1); and a filter screen (4) is provided at the upper end of the interior of the water tank (2).

4. A rainfall simulation device for evaluating moisture exposure of electric power equipment according to claim 1, characterized in that: The water outlet pipe (19) is connected to a water pump (20); a water inlet pipe (21) is installed at one end of the water pump (20); the water inlet pipe (21) is connected to the water tank (2); and a filter element (22) is arranged inside the water inlet pipe (21).

5. The rainfall simulation device for evaluating moisture damage to electric power equipment according to claim 1, characterized in that: Sensors (32) are installed on both sides of the top surface of the detection box (6); the sensors (32) are connected to a humidity detector (33) via a wire, and the humidity in the power equipment is detected via the humidity detector (33).

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