A mine frequency converter protection device

Abstract

This utility model discloses a protective device for a mining frequency converter, including a first outer protective cover, a second outer protective cover being fastened to one end of the first outer protective cover, positioning strips and hot-swappable heads on both sides of one end of the first outer protective cover, and positioning slots and hot-swappable slots matching the positioning strips and hot-swappable heads respectively on the second outer protective cover, with airbag-type locking pins evenly arranged at the edge of the positioning strips. When in use, the internal micro-pump of this utility model will start, filtering and purifying the air below the external environment through a wave-shaped heat dissipation duct, an inlet pipe with a filter cartridge, and an exhaust pipe, and then introducing it into the wave-shaped heat dissipation duct. The air dissipates heat from the mining frequency converter mounted on the inverter mounting base through heat conduction, and is then discharged to the upper part of the external environment through the exhaust pipe. This allows the device to provide good active heat dissipation protection for the frequency converter.

Description

Technical Field

[0001] This utility model relates to the field of mining frequency converter technology, specifically a mining frequency converter protection device. Background Technology

[0002] Mining frequency converters are power electronic devices specifically designed for mining environments such as coal mines and metal mines. They are mainly used to control the AC motors of mining machinery such as scraper conveyors, belt conveyors, hoists, and water pumps. By changing the frequency and voltage of the AC motor's input power supply, they achieve stepless speed regulation of the motor. Mining frequency converters are often equipped with protective covers for dust and impact protection.

[0003] Current protective devices for mining frequency converters, when covering the converters for protection, can affect the converters' heat dissipation, leading to high heat loss. Adding fans for cooling, on the other hand, results in significant noise pollution. Therefore, we propose a new type of protective device for mining frequency converters. Utility Model Content

[0004] The purpose of this utility model is to provide a protection device for mining frequency converters to solve the problems mentioned in the background art, such as the inability to simultaneously provide heat dissipation and noise reduction protection, and poor practicality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective device for a mining frequency converter, comprising a first outer protective cover, a second outer protective cover being fastened to one end of the first outer protective cover, positioning strips and hot-swappable heads being provided on both sides of one end of the first outer protective cover, positioning slots and hot-swappable slots matching the positioning strips and hot-swappable heads being respectively provided on the second outer protective cover, airbag-type locking pins being evenly provided at the edge of the positioning strips, adjusting air pipes communicating with the airbag-type locking pins being provided inside the top of both the first and second outer protective covers, microphones and speakers being evenly installed on the inner sidewalls of both the second and first outer protective covers, a frequency converter mounting base being fixed inside the second outer protective cover, a wave-shaped heat dissipation duct being provided at the bottom of the frequency converter mounting base, and a miniature air pump being installed on the wave-shaped heat dissipation duct.

[0006] As a further technical solution of this utility model, the inner walls of the first outer protective cover and the second outer protective cover are each provided with a stainless steel base layer and a noise reduction layer in sequence.

[0007] As a further technical solution of this utility model, the noise reduction layer is made of butyl rubber damping, and the stainless steel base layer has sound-absorbing holes evenly arranged on the side near the noise reduction layer.

[0008] As a further technical solution of this utility model, the outer walls of both the first outer protective cover and the second outer protective cover are provided with a nano-titanium dioxide self-cleaning coating.

[0009] As a further technical solution of this utility model, the inner walls of the first outer protective cover and the second outer protective cover are both provided with explosion-proof linings, and the explosion-proof linings are made of nickel-chromium-molybdenum alloy.

[0010] As a further technical solution of this utility model, the top of both the first outer protective cover and the second outer protective cover is provided with a manual air valve connected to the regulating air pipe.

[0011] As a further technical solution of this utility model, the top of the second outer protective cover is provided with an exhaust pipe that is connected to the wave-shaped heat dissipation duct.

[0012] As a further technical solution of this utility model, the bottom end of the second outer protective cover is provided with an air inlet pipe that is connected to the wave-shaped heat dissipation duct, and a filter cylinder is installed on the air inlet pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By incorporating speakers and other features, the device optimizes its performance. On one hand, an internal miniature air pump activates, filtering and purifying the air from below the external environment through a wave-shaped cooling duct, an inlet duct with a filter cartridge, and an exhaust duct. This purified air is then introduced into the wave-shaped cooling duct, where it dissipates heat from the mining inverter mounted on its mounting base. The air is then exhausted to above the external environment through the exhaust duct. This provides effective active cooling protection for the inverter. On the other hand, the inner walls of the second and first outer protective covers... An array of microphones can collect noise signals from the environment inside the device in real time and feed them back to the external control equipment. The external controller generates an electrical signal with the same frequency, equal amplitude, and opposite phase as the original noise based on the analysis results. This signal is then output to the second outer protective cover and the array of speakers on the inner wall of the first outer protective cover to generate an anti-phase sound wave. When the anti-phase sound wave meets the original noise in space, it can cause destructive interference, achieving a highly efficient noise reduction and protection effect. This makes the device have both heat dissipation and noise reduction protection functions, making it highly practical.

[0015] By installing a second outer protective cover, the device's structure is optimized. Firstly, the user can install the mining frequency converter inside the second outer protective cover. Then, using the locking action of the positioning strips and slots, the first outer protective cover is attached to the second outer protective cover. Opening the manual air valve on the regulating air pipe inflates the pipe, causing the connected airbag-type locking pin to expand. The expanded airbag-type locking pin then engages with the locking port of the positioning slot. This allows the device to assemble the protective structure without screws. Furthermore, the first and second outer protective covers, assembled onto the outer wall of the mining frequency converter, provide good dustproof, moisture-proof, and impact-proof protection. Secondly, by using a composite structure consisting of a nano-titanium dioxide self-cleaning coating, a stainless steel base, a butyl rubber damping noise reduction layer, and a nickel-chromium-molybdenum alloy explosion-proof lining, both the first and second outer protective covers possess good structural strength, anti-fouling effect, and noise reduction and explosion-proof performance. Attached Figure Description

[0016] Figure 1 This is a top view sectional structural diagram of the present invention;

[0017] Figure 2 This is a front view structural diagram of the present invention;

[0018] Figure 3 This is a partial cross-sectional view of the first outer protective cover of this utility model from below;

[0019] Figure 4 This is a top view of the mounting base for the frequency converter of this utility model.

[0020] Figure 5 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the side wall of the first outer protective cover of this utility model.

[0022] In the diagram: 1. Inverter mounting base; 2. First outer protective cover; 4. Second outer protective cover; 5. Manual air valve; 6. Exhaust duct fitting; 7. Inlet duct fitting; 8. Microphone; 9. Speaker; 10. Adjustable air pipe; 11. Positioning clip; 12. Miniature air pump; 13. Filter cartridge; 14. Wave-shaped heat dissipation duct; 15. Hot-swap slot; 16. Hot-swap head; 17. Airbag-type locking pin; 18. Positioning slot; 19. Nano titanium dioxide self-cleaning coating; 20. Stainless steel base layer; 21. Noise reduction layer; 22. Explosion-proof lining. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figure 1-6 The present invention provides an embodiment of a protective device for a mining frequency converter, comprising a first outer protective cover 2, a second outer protective cover 4 being fastened to one end of the first outer protective cover 2, positioning clips 11 and hot-swappable heads 16 being provided on both sides of one end of the first outer protective cover 2, and positioning slots 18 and hot-swappable slots 15 matching the positioning clips 11 and hot-swappable heads 16 respectively on the second outer protective cover 4;

[0025] Airbag-type locking pins 17 are evenly arranged at the edge of the positioning strip 11, and the top of the first outer protective cover 2 and the second outer protective cover 4 are both provided with adjusting air pipes 10 that are connected to the airbag-type locking pins 17.

[0026] The top of both the first outer protective cover 2 and the second outer protective cover 4 is equipped with a manual air valve 5 that is connected to the regulating air pipe 10.

[0027] Specifically, such as Figure 1 , Figure 2 and Figure 5 As shown, the user can install the mining frequency converter inside the second outer protective cover 4, and then use the snap-fit ​​action of the positioning clip 11 and the positioning slot 18 to snap the first outer protective cover 2 onto the second outer protective cover 4. Then, open the manual air valve 5 on the regulating air pipe 10 to inflate the regulating air pipe 10, so that the airbag locking pin 17 connected to it will expand with the air intake. The expanded airbag locking pin 17 will snap down into the locking port of the positioning slot 18. This allows the device to assemble the protective structure without screws, which is convenient for assembling the outer protective structure onto the mining frequency converter and for disassembling and repairing the mining frequency converter. It is highly practical. In addition, the hot-swappable heads 16 and hot-swappable slots 15 correspondingly provided on the first outer protective cover 2 and the second outer protective cover 4 also make it easy to connect the device to the power supply and control equipment.

[0028] Microphones 8 and speakers 9 are evenly installed on the inner walls of the second outer protective cover 4 and the first outer protective cover 2. A frequency converter mounting base 1 is fixed inside the second outer protective cover 4. A wave-shaped heat dissipation duct 14 is arranged at the bottom of the frequency converter mounting base 1. A miniature air pump 12 is installed on the wave-shaped heat dissipation duct 14.

[0029] Stainless steel base layer 20 and noise reduction layer 21 are sequentially provided inside the side walls of the first outer protective cover 2 and the second outer protective cover 4.

[0030] The noise reduction layer 21 is made of butyl rubber damping, and the stainless steel base layer 20 has sound-absorbing holes evenly arranged on the side close to the noise reduction layer 21.

[0031] The outer walls of the first outer protective cover 2 and the second outer protective cover 4 are both provided with a nano-titanium dioxide self-cleaning coating 19.

[0032] The inner walls of the first outer protective cover 2 and the second outer protective cover 4 are both provided with explosion-proof linings 22, and the explosion-proof linings 22 are made of nickel-chromium-molybdenum alloy.

[0033] The top of the second outer protective cover 4 is provided with an exhaust pipe 6 that is connected to the wave-shaped heat dissipation air duct 14.

[0034] The bottom of the second outer protective cover 4 is provided with an air inlet pipe 7 that is connected to the wave-shaped heat dissipation air duct 14, and a filter cartridge 13 is installed on the air inlet pipe 7.

[0035] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, when the device is running, its internal miniature air pump 12 will start, filtering and purifying the air below the external environment through the wave-shaped heat dissipation duct 14, the air inlet pipe 7 equipped with filter cartridge 13, and the exhaust pipe 6, and then introducing it into the wave-shaped heat dissipation duct 14. The air dissipates heat from the mining inverter mounted on the inverter mounting base 1 through thermal conduction, and is then discharged to the upper part of the external environment through the exhaust pipe 6. This allows the device to achieve good active heat dissipation protection for the inverter. On the other hand, the inner walls of the second outer protective cover 4 and the first outer protective cover 2 are equipped with... The array of microphones 8 can collect noise signals in the environment inside the device in real time and then feed them back to the external control device. The external controller generates an electrical signal with the same frequency, equal amplitude and opposite phase as the original noise based on the analysis results. This signal is then output to the array of speakers 9 arranged on the inner wall of the second outer protective cover 4 and the first outer protective cover 2 to generate an anti-phase sound wave. When the anti-phase sound wave meets the original noise in space, it can cause destructive interference, achieving a highly efficient noise reduction and protection effect. This makes the device have both heat dissipation and noise reduction protection functions, making it highly practical.

[0036] Working principle: During use, with an external power supply and control equipment, the user can install the mining frequency converter inside the second outer protective cover 4. Then, using the locking action of the positioning clip 11 and the positioning slot 18, the first outer protective cover 2 is snapped onto the second outer protective cover 4. The user then opens the manual air valve 5 on the regulating air pipe 10 to inflate the pipe, causing the connected airbag-type locking pin 17 to expand. The expanded airbag-type locking pin 17 then engages with the locking opening of the positioning slot 18, thus... The device allows for screwless assembly of the protective structure. The first outer protective cover 2 and the second outer protective cover 4, assembled onto the outer wall of the mining frequency converter, provide good dustproof, moisture-proof, and impact-proof protection. Furthermore, the hot-swappable heads 16 and hot-swappable slots 15 correspondingly provided on the first and second outer protective covers 2 and 4 facilitate easy power connection, enabling subsequent connection to external power supplies and control equipment. Simultaneously, during operation, the internal miniature air pump 12 starts, dispersing air through a wave-shaped... The hot air duct 14, the inlet duct 7 equipped with a filter cartridge 13, and the exhaust duct 6 filter and purify the air from the lower part of the external environment before introducing it into the wave-shaped heat dissipation duct 14. Through heat conduction, the air dissipates heat from the mining inverter mounted on the inverter mounting base 1, and is then discharged to the upper part of the external environment through the exhaust duct 6. This allows the device to provide good active heat dissipation protection for the inverter. Furthermore, the array of microphones 8 arranged on the inner walls of the second outer protective cover 4 and the first outer protective cover 2 can collect real-time data from the device. The noise signal in the internal environment is fed back to the external control device. The external controller generates an electrical signal with the same frequency, equal amplitude, and opposite phase as the original noise based on the analysis results. This signal is then output to the speakers 9 arranged in an array on the inner walls of the second outer protective cover 4 and the first outer protective cover 2, generating an anti-phase sound wave. When the anti-phase sound wave meets the original noise in space, it can cause destructive interference, achieving a highly efficient noise reduction and protection effect. This makes the device have both heat dissipation and noise reduction protection functions, making it highly practical.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mine frequency inverter protection device, characterized in that, The first outer protective cover (2) is attached to a second outer protective cover (4) at one end. Positioning strips (11) and hot-swappable heads (16) are provided on both sides of one end of the first outer protective cover (2). The second outer protective cover (4) is provided with positioning slots (18) and hot-swappable slots (15) that match the positioning strips (11) and hot-swappable heads (16), respectively. Airbag-type locking pins (17) are evenly distributed along the edge of the positioning strips (11). The inner top of the second outer protective cover (4) is provided with an adjusting air pipe (10) that is connected to the airbag locking pin (17). The inner walls of the second outer protective cover (4) and the first outer protective cover (2) are evenly equipped with microphones (8) and speakers (9). The inner side of the second outer protective cover (4) is fixed with a frequency converter mounting base (1). The bottom of the frequency converter mounting base (1) is provided with a wave-shaped heat dissipation air duct (14). A miniature air pump (12) is installed on the wave-shaped heat dissipation air duct (14).

2. The protection device for a mining frequency converter according to claim 1, characterized in that: The inner walls of the first outer protective cover (2) and the second outer protective cover (4) are each provided with a stainless steel base layer (20) and a noise reduction layer (21).

3. A protection device for a mining frequency converter according to claim 2, characterized in that: The noise reduction layer (21) is made of butyl rubber damping, and the stainless steel base layer (20) has sound-absorbing holes evenly arranged on the side near the noise reduction layer (21).

4. A protection device for a mining frequency converter according to claim 1, characterized in that: The outer walls of the first outer protective cover (2) and the second outer protective cover (4) are both provided with a nano-titanium dioxide self-cleaning coating (19).

5. A protection device for a mining frequency converter according to claim 1, characterized in that: The inner walls of the first outer protective cover (2) and the second outer protective cover (4) are both provided with explosion-proof linings (22), and the explosion-proof linings (22) are made of nickel-chromium-molybdenum alloy.

6. A protection device for a mining frequency converter according to claim 1, characterized in that: The top of the first outer protective cover (2) and the second outer protective cover (4) are both equipped with manual air valves (5) that are connected to the regulating air pipe (10).

7. A protection device for a mining frequency converter according to claim 1, characterized in that: The top of the second outer protective cover (4) is provided with an exhaust pipe (6) that is connected to the wave-shaped heat dissipation duct (14).

8. A protection device for a mining frequency converter according to claim 1, characterized in that: The bottom end of the second outer protective cover (4) is provided with an air inlet pipe (7) that is connected to the wave-shaped heat dissipation duct (14), and a filter cylinder (13) is installed on the air inlet pipe (7).

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