High-voltage frequency converter protection device with moisture-proof function

Abstract

The invention belongs to the technical field of protection devices, and particularly relates to a high-voltage frequency converter protection device with a moisture-proof function, which comprises a box body, a plurality of supporting legs are fixedly connected to the bottom of the box body, a partition plate is fixedly connected in the box body, and an air inlet chamber and an air outlet chamber are respectively formed above and below the partition plate; air outlets communicated with the exhaust chamber are formed in the two sides of the box body respectively, a fan is fixed to the top end of the box body in a penetrating mode, and a set of air pipes used for communicating the air inlet chamber and the exhaust chamber are installed on the two sides of the partition plate respectively. The box body is far away from the ground through the supporting legs to reduce damp, air is blown into the box body through the fan, air enters the air pipe from the air inlet chamber, then enters the exhaust chamber and is finally exhausted from the air outlet, circulation of the air in the box body is accelerated, and therefore the advantage that the density of dry air is smaller than that of wet air when the air flows from top to bottom is achieved; and dry gas is introduced to expel humid gas, so that a better moisture-proof effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of protection devices, and in particular to a high-voltage frequency converter protection device with a moisture-proof function. Background Art

[0002] High-voltage inverters, as key components in industrial electrical systems, are widely used in fields such as power generation, metallurgy, and chemical engineering. However, they have stringent requirements for their operating environment, and humid environments can severely impact device performance and service life. Traditional high-voltage inverter protection devices often rely solely on simple sealing measures or small amounts of desiccant for moisture protection, making them ineffective in long-term humid environments.

[0003] When the ambient humidity is high, moisture can easily penetrate the device, causing damage to electronic components, short circuits, and other faults. This can lead to equipment downtime, resulting in significant economic losses and production delays. Therefore, a high-voltage inverter protection device with excellent moisture resistance is urgently needed. Summary of the Invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a high-voltage inverter protection device with moisture-proof function.

[0005] The present invention proposes a high-voltage inverter protection device with moisture-proof function, including a box body, a plurality of legs fixedly connected to the bottom of the box body, a partition fixedly connected to the inside of the box body, an air intake chamber and an exhaust chamber formed above and below the partition respectively, the inverter body is installed in the exhaust chamber, and air outlets communicating with the exhaust chamber are respectively opened on both sides of the box body, a fan is fixed through the top of the box body, and a group of air ducts for connecting the air intake chamber and the exhaust chamber are respectively installed on both sides of the partition; the box body is kept at a height away from the ground by the legs, thereby away from the humid environment of the ground, to reduce the moisture of the device, and air can be blown into the box body by the fan, so that air enters the air duct from the air intake chamber and then enters the exhaust chamber and is finally discharged from the air outlet, so that the air in the box body is accelerated to circulate, thereby achieving a moisture-proof effect. The advantage of making the air flow from top to bottom is that the density of dry air is less than that of humid air, so that dry gas is introduced to drive out the humid gas in the box, which has a better moisture-proof effect.

[0006] Preferably, a group of symmetrically distributed shelves for placing hygroscopic materials are provided in the air inlet chamber, and side air vents and downwind air vents are respectively provided on the sides and bottom of the shelves; the air in the air inlet chamber will pass through the hygroscopic material when entering the exhaust chamber, so that the moisture in the air can be absorbed by the hygroscopic material, thereby further improving the moisture-proof effect.

[0007] Preferably, the frame plate is fixedly connected to the top of the partition plate by a set of bolts; the bolts can be removed to remove the frame plate from the partition plate, and then the moisture-absorbing material on the frame plate can be replaced in time.

[0008] Preferably, an electric push rod is fixedly connected to the bottom of the box, the output shaft of the electric push rod is fixedly connected to the motor, and the output shaft of the motor is fixedly connected to the round brush; when water accumulates on the ground under the box, the electric push rod and the motor can be started, and the output shaft of the electric push rod drives the motor and the round brush to move downward until the round brush touches the ground, and then the output shaft of the motor drives the round brush to rotate, and the round brush can shake off the water on the ground through the rapidly rotating bristles, thereby keeping the location of the device dry and further improving the moisture-proof effect.

[0009] Preferably, a plurality of heating elements surrounding the inverter body are fixedly connected to the inner wall of the bottom of the box; when the humidity inside the device reaches a certain level, the heating elements can be started, so that the air inside the drying device can be heated to dehumidify and prevent moisture.

[0010] Preferably, the control system further comprises the following units:

[0011] Sensor unit: Arrange temperature sensors and n humidity sensors around the inverter body to obtain the real-time humidity value H of each humidity sensor j (j=1,2,...,n), the internal temperature value T of the acquisition device;

[0012] Control unit: built-in data processor, receives data from each sensor unit, performs real-time analysis and processing, and generates three-level execution commands and the number of heating element startups;

[0013] Execution unit: Dynamically adjusts the heating element according to the command to achieve the required dehumidification effect.

[0014] Preferably, the specific process of the control unit analyzing and processing the data is:

[0015] Step 1: Data collection and preprocessing

[0016] Set the monitoring time zone T, collect sensor data within the period t∈T, and then calculate the mean, variance and range of each parameter;

[0017] Step 2: Normalize the parameters and calculate the comprehensive parameters, then calculate the weighted humidity comprehensive value H comp ;

[0018] Step 3: Execute decision logic

[0019] Preset threshold group H a ,H b ,H c , according to H comp and H a ,H b ,H c The comparison results generate different commands;

[0020] Step 4: Dynamic power control

[0021] Calculate the theoretical heat energy demand Q and actual power demand P, and determine the number of heating elements to be started n i .

[0022] Preferably, in step three:

[0023] If 0≤H comp <H a , generating low-frequency dehumidification signaling E1;

[0024] If H a ≤H comp <H b , generating conventional dehumidification signaling E2;

[0025] If H b ≤H comp <H c , generating high-frequency dehumidification signaling E3.

[0026] Preferably, the control system further comprises:

[0027] A data storage unit, used for storing the power, humidity value, temperature value, dehumidification signaling and the activation number of the corresponding heating element;

[0028] A user access unit for accessing information stored in the data storage unit;

[0029] The communication unit is used to realize data synchronization between the sensor unit, the control unit, and the execution unit.

[0030] Compared with the prior art, the present invention provides a high-voltage inverter protection device with moisture-proof function, which has the following beneficial effects:

[0031] 1. A moisture-proof high-voltage inverter protection device uses legs to elevate the box, away from the humid ground environment. Fans force air circulation, and air ducts guide air flow, allowing dry air to drive out moist air from top to bottom, achieving physical moisture-proofing. Hygroscopic material is placed on the shelf inside the air intake chamber to absorb moisture from the air, further enhancing the moisture-proofing effect. A heating element heats the air to dehumidify when humidity exceeds the standard. These multiple methods combine to ensure comprehensive internal dryness.

[0032] 2. A high-voltage inverter protection device with moisture-proof function. When water accumulates on the ground under the box, the cleaning structure composed of an electric push rod, a motor and a circular brush can automatically shake off the accumulated water, keeping the area around the device dry and improving the adaptability and reliability of the device in humid and complex environments.

[0033] 3. A high-voltage inverter protection device with moisture-proof function. The control system uses a sensor unit to arrange temperature sensors and n humidity sensors around the inverter body to monitor the temperature and humidity inside the device in real time. The control unit dynamically generates three-level execution commands based on preset thresholds and complex analysis and processing algorithms, accurately controlling the number of heating elements activated to achieve on-demand dehumidification, ensuring dehumidification effectiveness while avoiding energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of a high-voltage inverter protection device with moisture-proof function proposed by the present invention;

[0035] Figure 2 This is a schematic diagram of the internal structure of a high-voltage inverter protection device with moisture-proof function proposed by the present invention;

[0036] Figure 3 This is a schematic diagram of the frame structure of a high-voltage inverter protection device with moisture-proof function proposed by the present invention;

[0037] Figure 4 This is a schematic diagram of the installation structure of the heating element of a high-voltage inverter protection device with moisture-proof function proposed by the present invention;

[0038] Figure 5 This is a system block diagram of a high-voltage inverter protection device with moisture-proof function proposed by the present invention.

[0039] In the figure: 1. Box body; 2. Support legs; 3. Partition; 4. Inverter body; 5. Air outlet; 6. Fan; 7. Air duct; 8. Frame; 9. Downwind outlet; 10. Side wind outlet; 11. Hygroscopic material; 12. Bolt; 13. Electric push rod; 14. Motor; 15. Round brush; 16. Heating element. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0042] Reference Figure 1-Figure 5A high-voltage inverter protection device with moisture-proof function includes a box body 1, a plurality of legs 2 are fixedly connected to the bottom of the box body 1, a partition 3 is fixedly connected to the inside of the box body 1, and an air intake chamber and an exhaust chamber are formed above and below the partition 3 respectively. The inverter body 4 is installed in the exhaust chamber. Air outlets 5 communicating with the exhaust chamber are respectively opened on both sides of the box body 1. A fan 6 is fixed through the top of the box body 1. A group of air ducts 7 for connecting the air intake chamber and the exhaust chamber are respectively installed on both sides of the partition 3;

[0043] When in use, the box body 1 is kept at a height away from the ground by the support legs 2, thereby away from the humid environment of the ground to reduce the moisture of the device, and air can be blown into the box body 1 by the fan 6, so that the air enters the air duct 7 from the air inlet chamber and then enters the exhaust chamber and is finally discharged from the air outlet 5, so that the air in the box body 1 circulates faster, thereby achieving a moisture-proof effect. The advantage of making the air flow from top to bottom is that the density of dry air is less than that of humid air, so dry gas is introduced to drive out the humid gas in the box body 1, which has a better moisture-proof effect.

[0044] Furthermore, a set of symmetrically distributed shelves 8 for placing moisture-absorbing materials 11 are provided in the air inlet chamber, and side air vents 10 and lower air vents 9 are respectively provided on the sides and bottom of the shelves 8;

[0045] During use, the air in the air intake chamber will pass through the hygroscopic material 11 when entering the exhaust chamber, so that the moisture in the air can be absorbed by the hygroscopic material 11, thereby further improving the moisture-proof effect.

[0046] The frame plate 8 is fixedly connected to the top of the partition plate 3 by a set of bolts 12;

[0047] When in use, the bolts 12 can be removed to remove the frame plate 8 from the partition plate 3, and then the moisture absorbing material 11 on the frame plate 8 can be replaced in time.

[0048] Furthermore, an electric push rod 13 is fixedly connected to the bottom of the box body 1, an output shaft of the electric push rod 13 is fixedly connected to a motor 14, and an output shaft of the motor 14 is fixedly connected to a round brush 15;

[0049] During use, when water accumulates on the ground below the box body 1, the electric push rod 13 and the motor 14 can be started. The output shaft of the electric push rod 13 drives the motor 14 and the round brush 15 to move downward until the round brush 15 touches the ground. Then the output shaft of the motor 14 drives the round brush 15 to rotate. The round brush 15 can shake off the water on the ground through the rapidly rotating bristles, thereby keeping the location of the device dry and further improving the moisture-proof effect.

[0050] Furthermore, a plurality of heating elements 16 surrounding the inverter body 4 are fixedly connected to the inner wall of the bottom of the box body 1;

[0051] During use, when the humidity inside the device reaches a certain level, the heating element 16 can be activated, so that the air inside the device can be heated and dried, thereby dehumidifying and preventing moisture.

[0052] In another embodiment, a high-voltage inverter protection device with moisture-proof function further includes a control system composed of the following units:

[0053] Sensor unit: Arrange temperature sensors and n humidity sensors around the inverter body 4, and obtain the real-time humidity value H of each humidity sensor j (j=1,2,...,n), the internal temperature value T of the acquisition device;

[0054] Control unit: built-in data processor, receives data from each sensor unit, performs real-time analysis and processing, and generates three-level execution commands and the number of activations of the heating element 16;

[0055] Execution unit: dynamically regulating the heating element 16 according to the command, thereby achieving the desired dehumidification effect;

[0056] A data storage unit, for storing the power, humidity value, temperature value, dehumidification signaling and the corresponding activation number of the heating element 16;

[0057] A user access unit for accessing information stored in the data storage unit;

[0058] The communication unit is used to realize data synchronization between the sensor unit, the control unit, and the execution unit.

[0059] The specific process of the control unit analyzing and processing the data is as follows:

[0060] Step 1: Data collection and preprocessing

[0061] Set the monitoring time zone T, collect sensor data within the period t∈T, and then calculate the mean value of each parameter:

[0062]

[0063] variance:

[0064]

[0065] Very bad:

[0066] H range =max(H j )-min(H j )

[0067] Step 2: Normalize the parameters and calculate the comprehensive parameters, then calculate the weighted humidity comprehensive value H comp :

[0068]

[0069] Where H max is the upper limit of the humidity sensor range, α, β, γ are weight coefficients (α+β+γ=1), H var-max 、H range-max is the maximum value of variance and range in the historical window.

[0070] Step 3: Execute decision logic

[0071] Preset threshold group H a ,H b ,H c , according to H comp and H a ,H b ,H c The comparison results generate different commands:

[0072] If 0≤H comp <H a , generate low-frequency dehumidification signaling E1; if H a ≤H comp <H b , generate conventional dehumidification signal E2; if H b ≤H comp <H c , generating high-frequency dehumidification signaling E3.

[0073] Step 4: Dynamic power control

[0074] Calculate the theoretical heat energy demand Q: Q = m·c·ΔH + L·ΔW, where m is the air mass flow rate (kg / s); c is the specific heat capacity of air (J / (kg·°C)); ΔH is the target humidity difference (%); L is the latent heat of water vapor (J / kg); ΔW is the humidity ratio change (kg / kg) and the actual power demand P: Where η: thermal efficiency of the heating element 16, which determines the number of heating elements 16 to be started n i : Among them, k represents the weight coefficient of the corresponding dehumidification signaling in the dehumidification signaling group, i represents the number of the low-frequency dehumidification signaling, the conventional dehumidification signaling and the high-frequency dehumidification signaling, and is expressed as i=1, 2 or 3.

[0075] Working principle:

[0076] Moisture-Proof Foundation: When the device is operating, legs 2 elevate enclosure 1, reducing the impact of ground moisture. When fan 6 is activated, air enters the intake chamber from the top of enclosure 1. Passing through side vents 10 and downdraft vents 9 on frame 8, it comes into contact with moisture-absorbing material 11, absorbing moisture. The air then flows through duct 7 into the exhaust chamber, carrying heat and excess moisture generated by the inverter body 4. It is ultimately discharged through outlet 5, achieving air circulation and moisture-proofing.

[0077] Water accumulation: When water accumulates on the ground below the housing 1, the sensor detects the water accumulation signal and transmits it to the control unit, which activates the electric push rod 13. The output shaft of the electric push rod 13 drives the motor 14 and circular brush 15 downward until the circular brush 15 touches the ground. The output shaft of the motor 14 then drives the circular brush 15 to rotate at high speed, using centrifugal force to shake off the accumulated water on the ground, keeping the area around the device dry and reducing the impact of moisture on the device.

[0078] Intelligent dehumidification: The temperature sensor and humidity sensor in the sensor unit collect data from the device in real time, and transmit the temperature value T and the real-time humidity value of each humidity sensor to the control unit. The control unit first collects and pre-processes the data, calculates the parameter mean, variance and range, and then performs normalization and comprehensive parameter calculation to obtain the humidity comprehensive value. Then, the humidity comprehensive value is compared with the preset threshold group: if it is 0≤H comp <H a In the interval, a low-frequency dehumidification signal E1 is generated, and the execution unit starts a small number of heating elements 16 for slow dehumidification; if in H a ≤H comp <H b In the interval, a conventional dehumidification signal E2 is generated, and the appropriate heating element 16 is started to dehumidify at conventional power; if it is in H b ≤H comp <H c During this period, a high-frequency dehumidification signal E3 is generated, activating a larger number of heating elements 16 for rapid dehumidification at high power. During this process, the control unit also accurately calculates and determines the number of heating elements 16 to activate based on the theoretical thermal energy demand Q and the actual power demand P, ensuring a balance between dehumidification effectiveness and energy consumption.

[0079] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-voltage inverter protection device with moisture-proof function, comprising a box (1), characterized in that: The bottom of the box (1) is fixedly connected to a plurality of legs (2), the interior of the box (1) is fixedly connected to a partition (3), the upper and lower parts of the partition (3) respectively form an air intake chamber and an exhaust chamber, the inverter body (4) is installed in the exhaust chamber, both sides of the box (1) are respectively provided with air outlets (5) communicating with the exhaust chamber, a fan (6) is fixedly passed through the top of the box (1), and a group of air ducts (7) for connecting the air intake chamber and the exhaust chamber are respectively installed on both sides of the partition (3).

2. The high-voltage inverter protection device with moisture-proof function according to claim 1, characterized in that: A set of symmetrically distributed racks (8) for placing hygroscopic materials (11) are provided in the air inlet chamber, and side air vents (10) and lower air vents (9) are respectively provided on the sides and bottom of the racks (8).

3. The high-voltage inverter protection device with moisture-proof function according to claim 2, characterized in that: The frame plate (8) is fixedly connected to the top of the partition plate (3) by a group of bolts (12).

4. The high-voltage inverter protection device with moisture-proof function according to claim 1, characterized in that: The bottom of the box (1) is fixedly connected to an electric push rod (13), the output shaft of the electric push rod (13) is fixedly connected to a motor (14), and the output shaft of the motor (14) is fixedly connected to a round brush (15).

5. The high-voltage inverter protection device with moisture-proof function according to claim 1, characterized in that: A plurality of heating elements (16) surrounding the inverter body (4) are fixedly connected to the inner wall of the bottom of the box (1).

6. The high-voltage inverter protection device with moisture-proof function according to claim 5, characterized in that: It also includes a control system consisting of the following units: Sensor unit: Arrange temperature sensors and n humidity sensors around the inverter body (4) to obtain the real-time humidity value H of each humidity sensor. j (j=1,2,...,n), the internal temperature value T of the acquisition device; Control unit: a built-in data processor that receives data from each sensor unit, performs real-time analysis and processing, and generates three-level execution commands and the number of activations of the heating element (16); Execution unit: dynamically regulates the heating element (16) according to the command, thereby achieving the required dehumidification effect.

7. The high-voltage inverter protection device with moisture-proof function according to claim 6, characterized in that: The specific process of the control unit analyzing and processing the data is as follows: Step 1: Data collection and preprocessing Set the monitoring time zone T, collect sensor data within the period t∈T, and then calculate the mean, variance and range of each parameter; Step 2: Normalize the parameters and calculate the comprehensive parameters, then calculate the weighted humidity comprehensive value H comp ; Step 3: Execute decision logic Preset threshold group H a ,H b ,H c , according to H comp and H a ,H b ,H a The comparison results generate different commands; Step 4: Dynamic power control Calculate the theoretical heat energy demand Q and the actual power demand P, and determine the number n of heating elements (16) to be started i .

8. The high-voltage inverter protection device with moisture-proof function according to claim 7, characterized in that: In step three: If 0≤H comp <H a , generating low-frequency dehumidification signaling E1; If H a ≤H comp <H b , generating conventional dehumidification signaling E2; If H b ≤H comp <H c , generating high-frequency dehumidification signaling E3.

9. The high-voltage inverter protection device with moisture-proof function according to claim 6, characterized in that: The control system further comprises: A data storage unit for storing the power, humidity value, temperature value, dehumidification signaling and the corresponding activation number of the heating element (16); A user access unit for accessing information stored in the data storage unit; The communication unit is used to realize data synchronization between the sensor unit, the control unit, and the execution unit.

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