Explosion-proof water-cooled frequency converter

Abstract

The invention discloses an anti-explosion water-cooled frequency converter, and relates to the technical field of frequency converters. Comprising a box body, a box door, a frequency converter component, a controller and an audible and visual alarm, and a transverse plate, a vertical plate and a partition plate are fixed to the bottom of the box body and divide the space of the box body into a working cavity, a cooling cavity, a water removal cavity and a buffering cavity. The frequency converter is provided with the transverse plate, the vertical plate, the partition plate, the water cooling part, the condensate water removing part and the driving part, the working cavity is a relatively closed space, and moisture in air is continuously discharged out of the working cavity through the condensate water removing part after being condensed, so that the moisture in the air in the working cavity is reduced, corrosion or short circuit of components of the frequency converter caused by high-humidity air is avoided, and the service life of the frequency converter is prolonged. The service life of the frequency converter is shortened; and the operation stability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of frequency converters, in particular to an explosion-proof water-cooled frequency converter. Background Art

[0002] The frequency converter is an electric energy control device that uses the on-off function of power semiconductor devices to convert industrial frequency power into another frequency. Its main function is to convert AC power into DC power, and then convert DC power into AC power. As the power of frequency converters in coal mines becomes larger and larger, traditional air cooling can no longer meet the needs, and water cooling is becoming more and more common. At present, there are two main water cooling methods used in underground explosion-proof frequency converters. One is external water supply cooling, and the other is internal water circulation cooling.

[0003] The Chinese invention patent, application publication number CN118659307A discloses an explosion-proof inverter with a water-cooling structure. By setting a protective mechanism and a drying mechanism, after a cooling pipe leaks, the inverter components in operation can be powered off to protect the inverter components. At the same time, the inverter components and the cooling pipe can be isolated to reduce the contact between water and the inverter components, and further protect the inverter components. When the cooling pipe leaks, the flashing light can be used to remind the staff to deal with the leakage in time, further reducing the damage to the inverter components caused by the leakage. By drying the air, the condensation on the cooling pipe surface caused by the temperature difference can be reduced, further reducing the contact between water and the inverter components, and protecting the inverter components again.

[0004] The above solution solves the technical problems raised in the background technology. However, in practical applications, the above solution and the existing explosion-proof water-cooled inverter still have certain defects, such as:

[0005] First, in order to cool down the inverter components in the explosion-proof box, the explosion-proof box is generally not closed, and the outside air with high humidity will enter the explosion-proof box, which will cause corrosion or short circuit of the components, shorten the service life of the inverter and reduce the stability of operation;

[0006] Secondly, when the cooling water pipe bursts, in order to prevent water from coming into contact with the inverter components, the circuit needs to be disconnected immediately for shutdown and maintenance, which will affect production and reduce production efficiency. Summary of the invention

[0007] The object of the present invention is to provide an explosion-proof water-cooled inverter to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions: an explosion-proof water-cooled inverter, comprising a box, a box door, inverter components, a controller and an audible and visual alarm, wherein a horizontal plate, a vertical plate and a partition are fixed to the bottom of the box, which divide the space of the box into a working chamber, a cooling chamber, a water removal chamber and a buffer chamber;

[0009] A temperature sensor, a humidity sensor and a first air pressure sensor are fixed to the side wall of the working chamber, and the temperature sensor, the humidity sensor and the first air pressure sensor are all electrically connected to the controller;

[0010] A water cooling element is provided in the cooling chamber, and heat exchange and cooling of the working chamber gas is achieved through the water cooling element;

[0011] A water outlet groove is provided on the plate body of the partition, a condensed water removal member is provided in the water removal cavity, and a driving member is provided on the outer side of the condensed water removal member, and the condensed water generated by the water cooling member is removed by the condensed water removal member;

[0012] A drainage pipe and a water level indicator connected to the water removal chamber are provided at the bottom of the box body, and the water level in the water removal chamber is detected by the water level indicator;

[0013] A fan hole is provided on the plate body of the vertical plate, and an electronic fan is fixed in the fan hole;

[0014] An air intake assembly is provided on the top of the horizontal plate, and a plurality of cold air outlet pipes connected to the buffer chamber are fixed on the top of the vertical plate. After the electronic fan is turned on, the air in the working chamber enters the cooling chamber through the air intake assembly;

[0015] The water cooling part includes a water inlet pipe and a water outlet pipe, which are fixedly connected to the refrigeration water tank, a water pump is connected to the pipe body of the water inlet pipe, a curved pipe is formed between the water inlet pipe and the water outlet pipe, and the curved pipe is located in the cooling cavity.

[0016] Furthermore, the condensate removal member includes a water scraper ring movably connected to the curved tube, a movable plate is fixed to the top of the water scraper ring, a reciprocating screw and a guide rod are movably connected between the inner walls of both sides of the cooling chamber, and the reciprocating screw and the guide rod are movably screwed and movably connected to the movable plate respectively;

[0017] A second rotating shaft and two parallel first rotating shafts are movably connected on the side plate of the water removal chamber, a water absorption belt is connected between the second rotating shaft and the two first rotating shafts, and the top water absorption belt is located directly below the water outlet trough and contacts the bottom end of the partition;

[0018] A fixing rod is fixed on the side plate of the water removal chamber, a scraper is fixed on the rod body of the fixing rod, and the top plate body of the scraper is pressed against the water absorption belt.

[0019] Furthermore, the driving member includes a worm wheel fixed on the reciprocating screw rod body and a worm movably connected to the box body, and the worm is meshed with the worm wheel;

[0020] The second pulleys are fixed on the two first rotating shafts extending out of the box body, a second belt is connected between the two second pulleys, a fixing plate is fixed on the side of the box body, a motor is fixed on the plate body of the fixing plate, and the output end of the motor is fixed to the end of the first rotating shaft;

[0021] A first pulley is fixed on one of the first rotating shaft bodies and on the worm rod body extending out of the box body, and a first belt is connected between the two first pulleys.

[0022] Furthermore, the water volume indicator is a liquid flow meter, which is connected to the pipe body of the drain pipe.

[0023] Furthermore, the air intake assembly includes an annular shell, two extension plates are formed on the inner side of the annular shell, a support plate is fixed between the inner walls of the annular shell, a vertical rod is fixed to the top of the support plate, a water baffle is fixed to the top of the vertical rod, an insert plate is formed on the outer side of the water baffle, and the insert plate extends into the U-shaped groove formed by the two extension plates.

[0024] Furthermore, the top plate body of the water retaining plate is in a curved surface shape.

[0025] Furthermore, the side wall of the box body is provided with a gas dispersion member, and the cold air discharged through the cold air outlet pipe is dispersed by the gas dispersion member.

[0026] Furthermore, the gas dispersion member includes a connecting plate, a fixing pipe is fixed on the plate body of the connecting plate, a plug hole is provided at the bottom of the fixing pipe, and the plug hole is adapted to the cold air outlet pipe;

[0027] The side wall of the fixed tube is movably connected with a movable shaft, and a plurality of windmill blades are fixed on the shaft body of the movable shaft;

[0028] A plurality of connecting rods are fixed on the shaft body of the movable shaft, the ends of the connecting rods are fixed to the rotating drum, and a plurality of inclined air outlet holes are opened on the outer side of the rotating drum;

[0029] When the driving force of the cold air is applied to the windmill blades, the windmill blades drive the movable shaft and the rotating drum to rotate.

[0030] Furthermore, a circular through groove is provided at the top of the box body, and a pressure relief device is provided at the top of the circular through groove, so that the pressure generated by the explosion in the box body can be relieved through the pressure relief device.

[0031] Furthermore, the pressure relief device includes a bursting disc fixed to the top of the circular through groove, and a first baffle plate and a second baffle plate are fixed to the top of the box body, and the first baffle plate and the second baffle plate are located outside the bursting disc;

[0032] A plurality of pressure relief holes are provided on the plate bodies of the first baffle plate and the second baffle plate, and the pressure relief holes on the plate bodies of the first baffle plate and the second baffle plate are staggered;

[0033] A top cover is fixed to the top of the first baffle plate and the second baffle plate, a second air pressure sensor is fixed to the inner wall of the top cover, a vertical groove is opened on the outer side of the top cover, a folded sealing cloth is fixed in the vertical groove, a counterweight is fixed to the bottom end of the folded sealing cloth, and an electromagnet is fixed to the outer side of the top cover;

[0034] The electromagnet is magnetically attracted to the counterweight, and the electromagnet is electrically connected to the controller.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The explosion-proof water-cooled inverter is provided with a horizontal plate, a vertical plate, a partition, a water-cooling component, a condensed water removal component and a driving component. Since the working chamber is a relatively closed space, and the moisture in the air is condensed and continuously discharged from the working chamber through the condensed water removal component, the moisture in the air in the working chamber is reduced, and corrosion or short circuit of the inverter components caused by high-humidity air is avoided, thereby improving the service life of the inverter and improving the stability of the device operation.

[0037] At the same time, an air intake assembly is provided. When the top of the curved tube bursts, the sprayed water will be blocked by the extension plate and the plug plate at the bottom. Even if some water splashes out from the gap formed by the plug plate and the top extension plate, the curved plate body on the top of the water baffle will block the splashed water. The blocked water flows back into the cooling chamber through the water baffle, and will not enter the working chamber, effectively preventing the inverter components from contacting with water. In this way, when the curved tube bursts, there is no need to immediately disconnect the circuit for shutdown and maintenance, which reduces the impact on production and improves production efficiency.

[0038] Secondly, a gas dispersion component is provided on the side wall of the box body, and the cold air discharged through the cold air outlet pipe is dispersed by the gas dispersion component. Firstly, since the airflow will diffuse to the outside of the rotating drum, the coverage range of the airflow is increased. Secondly, the airflow disturbs the air in the working chamber, which increases the heat exchange efficiency between the air in the working chamber and the inverter components, thereby improving the heat exchange effect on the inverter components.

[0039] In addition, a pressure relief device is provided. Firstly, the pressure generated by the explosion in the box is relieved through the pressure relief device, thereby improving the safety of the device. Secondly, after the pressure relief device is working, the folded sealing cloth on the pressure relief device is unfolded to achieve the sealing of the working chamber. The inverter components or other electrical components burning in the box will be extinguished due to the exhaustion of oxygen in the working chamber, thereby improving the fire safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a right side axial view of the present invention;

[0041] Figure 2 It is a left rear axial view of the present invention;

[0042] Figure 3 This is a right side axial view of the present invention after removing the box door;

[0043] Figure 4 This is a left side axial view of the present invention after removing the box door;

[0044] Figure 5 This is a bottom view of the present invention after removing the box door;

[0045] Figure 6 A half-section diagram of the present invention;

[0046] Figure 7 An axial view of the condensate removal member of the present invention;

[0047] Figure 8 It is an axial view of the driving member of the present invention;

[0048] Fig. 9 A half-section view of the air intake assembly of the present invention;

[0049] Fig.10 A half-section view of a gas dispersion member of the present invention;

[0050] Fig.11 It is a half-section view of the pressure relief device of the present invention.

[0051] In the figure: 1, box body; 201, horizontal plate; 202, vertical plate; 2021, electronic fan; 203, partition; 204, water outlet; 3, inverter components; 4, water cooling parts; 401, water inlet pipe; 402, curved pipe; 5, condensate removal parts; 501, guide rod; 502, reciprocating screw rod; 503, movable plate; 504, wiper ring; 505, first rotating shaft; 506, second rotating shaft; 507, water absorption belt; 508, fixed rod; 509, scraper; 6, drain pipe; 7, liquid flow meter; 8, driving part; 801, worm wheel; 802, worm; 803, first pulley; 804, first belt; 805, second pulley; 806, second belt; 807, fixed plate; 8 08. Motor; 9. Air intake assembly; 901. Annular shell; 902. Extension plate; 903. Support plate; 904. Vertical rod; 905. Water baffle; 906. Insert plate; 10. Cold air outlet pipe; 11. Gas dispersion member; 111. Connecting plate; 112. Fixed pipe; 113. Movable shaft; 114. Windmill blade; 115. Rotating drum; 116. Air outlet; 117. Connecting rod; 12. Pressure relief device; 121. Bursting disc; 122. First baffle plate; 123. Second baffle plate; 124. Top cover; 125. Counterweight; 126. Folding sealing cloth; 127. Electromagnet; 13. Temperature sensor; 14. Humidity sensor; 15. First air pressure sensor; 16. Sound and light alarm. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Embodiment 1: Figure 1-Figure 9 As shown, the present invention provides a technical solution: an explosion-proof water-cooled inverter, comprising a box body 1, a box door, inverter components 3, a controller and an audible and visual alarm 16 electrically connected to the controller, a horizontal plate 201, a vertical plate 202 and a partition 203 are fixed at the bottom of the box body 1, which divide the space of the box body 1 into a working chamber, a cooling chamber, a dewatering chamber and a buffer chamber, when the box door is closed, the working chamber, the cooling chamber, the dewatering chamber and the buffer chamber are all closed spaces, a temperature sensor 13, a humidity sensor 14 and a first air pressure sensor 15 are fixed on the side wall of the working chamber, and the temperature sensor 13, the humidity sensor 14 and the first air pressure sensor 15 are all electrically connected to the controller, it should be noted that the temperature sensor 13, the humidity sensor 14 and the first air pressure sensor 15 are used to detect the temperature, humidity and air pressure in the working chamber respectively, and the detected data are transmitted to the controller in real time.

[0054] A water cooling element 4 is provided in the cooling chamber, and heat exchange and cooling of the working chamber gas is achieved through the water cooling element 4. Specifically, Figure 6 and Figure 7 As shown, the water-cooling component 4 includes an inlet pipe 401 and an outlet pipe, and the inlet pipe 401 and the outlet pipe are fixedly connected to a refrigeration water tank, wherein the refrigeration water tank can be a water tank with a built-in refrigerator, and the water in the water tank is cooled by the built-in refrigerator, or it can be a heat exchanger, and the water in the water tank is cooled by external cold water. It is a prior art and will not be described in detail in this scheme. A water pump is connected to the pipe body of the water inlet pipe 401, and the suction force of the water pump is used to realize the flow of refrigeration water tank water to the water inlet pipe 401. In order to increase the refrigeration efficiency, a curved pipe 402 is formed between the water inlet pipe 401 and the outlet pipe in the cooling chamber, and a mounting plate and a clamp are fixed to the side wall of the cooling chamber. The outer pipe body of the curved pipe 402 is fixed by the clamp to improve the placement stability of the water inlet pipe 401 in the cooling chamber.

[0055] In addition, if Figure 6 As shown, in order to improve the heat exchange efficiency, the curved tube 402 is located in the middle of the cooling cavity, and a certain space is formed between it and the top and bottom of the cooling cavity.

[0056] A water outlet groove 204 is opened on the plate body of the partition 203. In order to facilitate the water generated by the condensation of the water-cooling component 4 to flow into the water outlet groove 204, the plate body on the top of the partition 203 is inclined toward the water outlet groove 204 (i.e., a slope is formed). A condensate removal component 5 is arranged in the water removal cavity, and a driving component 8 is arranged on the outer side of the condensate removal component 5. The condensate generated by the water-cooling component 4 is removed by the condensate removal component 5.

[0057] Among them, Figure 6-Figure 8 As shown, the condensation water removal member 5 includes a wiper ring 504 movably connected to the curved tube 402, and a movable plate 503 is fixed to the top of the wiper ring 504, so that when the movable plate 503 moves left and right on the tube body of the curved tube 402, the condensation water droplets adhered to the tube body of the curved tube 402 are scraped off by the wiper ring 504.

[0058] like Figure 7 As shown, a reciprocating screw 502 and a guide rod 501 are movably connected between the inner walls of both sides of the cooling chamber. The reciprocating screw 502 and the guide rod 501 are movably screwed and movably plugged with the movable plate 503 respectively. In this way, when the reciprocating screw 502 rotates, the movable plate 503 is guided by the guide rod 501, so that the movable plate 503 can reciprocate along the body of the curved tube 402.

[0059] A second rotating shaft 506 and two parallel first rotating shafts 505 are movably connected on the side plate of the water removal chamber, and a water absorption belt 507 is connected between the second rotating shaft 506 and the two first rotating shafts 505. It should be noted that the top water absorption belt 507 is located directly below the water outlet trough 204 and contacts the bottom end of the partition 203, thereby blocking the water outlet trough 204 and reducing the outside air from entering the cooling chamber.

[0060] In the present embodiment, the water-absorbing belt 507 can be made of cotton material, polymer material or non-woven fabric, and is used to absorb water flowing in and out of the water tank 204. A fixed rod 508 is fixed on the side plate of the water removal chamber, and a scraper 509 is fixed on the rod body of the fixed rod 508, and the top plate body of the scraper 509 is squeezed with the water-absorbing belt 507. In this way, when the water-absorbing belt 507 rotates, the water-absorbing belt 507 absorbs the water flowing in and out of the water tank 204, and the water absorbed on the water-absorbing belt 507 is separated from the water-absorbing belt 507 under the squeezing of the scraper 509 and enters the water removal chamber. It can be known that since the working chamber is a relatively closed space, and the moisture in the air is condensed and continuously discharged from the working chamber through the condensed water removal element 5, the moisture in the air in the working chamber is reduced, and high-humidity air is prevented from causing corrosion or short circuit of inverter components, thereby improving the service life of the inverter and improving the stability of the device operation.

[0061] like Figure 7 and Figure 8 As shown, the driving member 8 includes a worm wheel 801 fixed on the rod body of the reciprocating screw 502 and a worm 802 movably connected to the box body 1, and the worm 802 is meshed with the worm wheel 801, and the second pulleys 805 are fixed on the shaft bodies of the two first rotating shafts 505 extending out of the box body 1, and a second belt 806 is connected between the two second pulleys 805, and a fixing plate 807 is fixed to the side of the box body 1, and a motor 808 electrically connected to the controller is fixed on the plate body of the fixing plate 807, and the output end of the motor 808 is fixed to the end of the first rotating shaft 505, and a first pulley 803 is fixed on the shaft body of one of the first rotating shafts 505 and the rod body of the worm 802 extending out of the box body 1, and a first belt 804 is connected between the two first pulleys 803.

[0062] After the motor 808 is started, the water absorption belt 507 moves and the movable plate 503 moves back and forth on the curved tube 402 under the driving action of the second belt 806 and the first belt 804.

[0063] In addition, in this solution, the condensate removal member 5 can be operated by only one driving motor, thereby reducing the manufacturing cost of the device.

[0064] It is understood that when the curved tube 402 bursts, a large amount of water will enter the water removal chamber through the water absorption belt 507. In order to detect the amount of water, it is known whether the curved tube 402 has burst. Figure 2 and Figure 4 As shown, a drain pipe 6 connected to the water removal chamber and a water level indicator electrically connected to the controller are provided at the bottom of the box body 1, wherein the water level indicator can be a water level sensor installed in the water removal chamber or a liquid flow meter 7 connected to the body of the drain pipe 6. In this solution, in order to improve the detection sensitivity and facilitate installation, the water level indicator is preferably a liquid flow meter 7. When the liquid flow meter 7 detects that the amount of water discharged from the drain pipe 6 reaches a threshold value, the controller controls the sound and light alarm 16 to sound an alarm, thereby reminding the staff to perform maintenance.

[0065] like Figure 5 As shown, a fan hole is opened on the plate body of the vertical plate 202, and an electronic fan 2021 is fixed in the fan hole. After the electronic fan 2021 is started, the air in the working chamber can be circulated.

[0066] like Figure 3 and Fig. 9 As shown, an air intake assembly 9 is provided on the top of the horizontal plate 201. Figure 4 As shown, a plurality of cold air outlet pipes 10 connected to the buffer chamber are fixed on the top of the vertical plate 202. After the electronic fan 2021 is turned on, the air in the working chamber enters the cooling chamber through the air intake assembly 9, and the hot air enters the buffer chamber after heat exchange with the water-cooled component 4 in the cooling chamber, and is finally discharged into the working chamber through the cold air outlet pipes 10, thereby cooling the inverter components in the working chamber.

[0067] Specifically, Fig. 9 As shown, the air intake assembly 9 includes an annular shell 901, two extension plates 902 are formed on the inner side of the annular shell 901, a support plate 903 is fixed between the inner walls of the annular shell 901, a vertical rod 904 is fixed at the top of the support plate 903, and a water baffle 905 is fixed at the top of the vertical rod 904, and an insert plate 906 is formed on the outer side of the water baffle 905, the insert plate 906 extends into the U-shaped groove formed by the two extension plates 902, and the length of the insert plate 906 extending into the U-shaped groove is 1 / 3 of the length of the U-shaped groove, so that due to the large gap between the insert plate 906 and the side wall of the U-shaped groove, the airflow entering the air intake assembly 9 will not be blocked.

[0068] It should be noted that when the top of the curved tube 402 bursts, the sprayed water will be blocked by the extension plate 902 and the plug plate 906 at the bottom. In addition, in this solution, the top plate body of the water baffle 905 can be set to a curved surface. In this way, even if some water splashes out from the gap formed by the plug plate 906 and the top extension plate 902, the curved plate body on the top of the water baffle 905 will block the splashing water. The blocked water flows back into the cooling chamber through the water baffle 905, and will not enter the working chamber, effectively preventing the inverter components from contacting water. In this way, when the curved tube 402 bursts, there is no need to immediately disconnect the circuit for shutdown and maintenance, which reduces the impact on production and improves production efficiency.

[0069] It should be added that, due to maintenance or operation needs of the staff, after the box door is closed, the outside air will enter the working chamber, and the temperature, humidity and air pressure in the working chamber are detected by the temperature sensor 13, the humidity sensor 14 and the first air pressure sensor 15 respectively, and the detected data are transmitted to the controller in real time. When the temperature in the working chamber is higher than the set value, the controller controls the electronic fan 2021 to start, and the working chamber is cooled by the water cooling component 4. When the humidity value in the working chamber exceeds the set value, the controller drives the component 8 to start, and the moisture in the air is condensed and continuously discharged from the working chamber through the condensed water removal component 5, thereby reducing the moisture in the air in the working chamber. When the air pressure in the working chamber is higher than the set value, the controller controls the sound and light alarm 16 to alarm.

[0070] Embodiment 2: Based on Embodiment 1, Figure 4 and Fig.10 As shown, a gas dispersion member 11 is provided on the side wall of the box body 1, and the cold air discharged through the cold air outlet pipe 10 is dispersed by the gas dispersion member 11, thereby improving the heat exchange effect between the cold air and the inverter components.

[0071] Specifically, the gas dispersion component 11 includes a connecting plate 111, on the plate body of the connecting plate 111, a fixing tube 112 is fixed, a plug hole is opened at the bottom of the fixing tube 112, and the plug hole is adapted to the cold air outlet pipe 10. In this way, the gas dispersion component 11 is used as a separate installation component, which is not fixed to the cold air outlet pipe 10. In this way, when the gas dispersion component 11 is damaged, it can be replaced separately without affecting the gas output of the cold air outlet pipe 10.

[0072] A movable shaft 113 is movably connected to the side wall of the fixed tube 112, and a plurality of windmill blades 114 are fixed on the shaft body of the movable shaft 113. A rotating drum 115 is fixed to the shaft body of the movable shaft 113 through a plurality of connecting rods 117. The rotating drum 115 coincides with the central axis of the fixed tube 112 and can rotate relative to the fixed tube 112. A plurality of inclined air outlet holes 116 are provided on the outer side of the rotating drum 115. Specifically, when working, the driving force of the cold air is applied to the windmill blades 114. 4, the windmill blades 114 drive the movable shaft 113 and the rotating drum 115 to rotate. Since the air outlet holes 116 are arranged on the rotating drum 115 at an outward angle, when the rotating drum 115 rotates, the airflow will diffuse to the outside of the rotating drum 115, thereby increasing the coverage of the airflow. In addition, as the rotating drum 115 rotates, the airflow disturbs the air in the working chamber, thereby increasing the heat exchange efficiency between the air in the working chamber and the inverter components, thereby improving the heat exchange effect on the inverter components.

[0073] Embodiment 3: When the inverter component in the box 1 explodes, the air pressure in the box 1 rises sharply. In order to prevent the air pressure from damaging the outer shell of the box 1 and other components in the box 1, based on the embodiment 1 or the embodiment 2, as shown in FIG. Figure 1 and Fig.11 As shown, a circular through groove is provided at the top of the box body 1 , and a pressure relief device 12 is provided at the top of the circular through groove, and the pressure generated in the box body 1 due to the explosion is relieved by the pressure relief device 12 .

[0074] Specifically, Fig.11 As shown, the pressure relief device 12 includes a bursting disc 121 fixed on the top of the circular through groove. The bursting disc 121 can be made of metal film, polymer film or other composite materials. Its applicable pressure depends on the number and volume of electrical components in the box body 1. A first baffle plate 122 and a second baffle plate 123 are fixed on the top of the box body 1. The first baffle plate 122 and the second baffle plate 123 are located on the outside of the bursting disc 121. A plurality of pressure relief holes are opened on the plate bodies of the first baffle plate 122 and the second baffle plate 123, and the pressure relief holes on the plate bodies of the first baffle plate 122 and the second baffle plate 123 are staggered. In this way, when the bursting disc 121 bursts, the first baffle plate 122 and the second baffle plate 123 will block the generated fragments without affecting the pressure relief to prevent the fragments from hurting people, thereby improving the safety of the device.

[0075] In addition, a top cover 124 is fixed to the top of the first baffle plate 122 and the second baffle plate 123, a second air pressure sensor electrically connected to the controller is fixed to the inner wall of the top cover 124, a vertical groove is provided on the outer side of the top cover 124, a folding sealing cloth 126 is fixed in the vertical groove, and the folding sealing cloth 126 can be made of non-woven fabric coated with flame retardant material and silicone rubber material, so as to increase the fireproof performance and sealing performance of the folding sealing cloth 126, a counterweight block 125 is fixed at the bottom end of the folding sealing cloth 126, and a second air pressure sensor electrically connected to the controller is fixed to the inner wall of the top cover 124, a vertical groove is provided on the outer side of the top cover 124, and a folding sealing cloth 126 is fixed in the vertical groove. There is an electromagnet 127, which is energized and attracts the counterweight 125. In this way, when the bursting disc 121 bursts, the second air pressure sensor detects a pressure change. At this time, the controller controls the electromagnet 127 to cut off the power, and the counterweight 125 moves downward under the action of its gravity until it contacts the top surface of the box body 1. At this time, the folded sealing cloth 126 is in an unfolded state to achieve sealing of the working chamber. The burning inverter components or other electrical components in the box body 1 will be extinguished due to the exhaustion of oxygen in the working chamber, thereby improving the fire safety of the device.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. An explosion-proof water-cooled inverter, comprising a housing (1), a door, inverter components (3), a controller and an audible and visual alarm (16), characterized in that: A horizontal plate (201), a vertical plate (202) and a partition plate (203) are fixed to the bottom of the box body (1), which divide the space of the box body (1) into a working chamber, a cooling chamber, a water removal chamber and a buffer chamber; A temperature sensor (13), a humidity sensor (14), and a first air pressure sensor (15) are fixed to the side wall of the working chamber, and the temperature sensor (13), the humidity sensor (14), and the first air pressure sensor (15) are all electrically connected to the controller; A water cooling element (4) is provided in the cooling chamber, and heat exchange and cooling of the working chamber gas is achieved through the water cooling element (4); A water outlet groove (204) is provided on the plate body of the partition (203); a condensed water removal component (5) is provided in the water removal chamber; a driving component (8) is provided outside the condensed water removal component (5); and condensed water generated by the water cooling component (4) is removed by the condensed water removal component (5); A drainage pipe (6) and a water level indicator connected to the water removal chamber are provided at the bottom of the box body (1), and the water level in the water removal chamber is detected by the water level indicator; A fan hole is provided on the plate body of the vertical plate (202), and an electronic fan (2021) is fixed in the fan hole; An air intake assembly (9) is provided on the top of the horizontal plate (201), and a plurality of cold air outlet pipes (10) connected to the buffer chamber are fixed on the top of the vertical plate (202); after the electronic fan (221) is turned on, the air in the working chamber enters the cooling chamber through the air intake assembly (9); The water cooling component (4) comprises a water inlet pipe (401) and a water outlet pipe, the water inlet pipe (401) and the water outlet pipe are fixedly connected to the refrigeration water tank, a water pump is connected to the pipe body of the water inlet pipe (401), a curved pipe (402) is formed between the water inlet pipe (401) and the water outlet pipe, and the curved pipe (402) is located in the cooling chamber.

2. The explosion-proof water-cooled inverter according to claim 1, characterized in that: The condensed water removal member (5) comprises a water scraper ring (504) movably plugged into the curved tube (402); a movable plate (503) is fixed to the top of the water scraper ring (504); a reciprocating screw (502) and a guide rod (501) are movably connected between the inner walls of both sides of the cooling chamber; the reciprocating screw (502) and the guide rod (501) are movably screwed and plugged into the movable plate (503) respectively; A second rotating shaft (506) and two parallel first rotating shafts (505) are movably connected on the side plate of the water removal chamber, a water absorption belt (507) is connected between the second rotating shaft (506) and the two first rotating shafts (505), and the top water absorption belt (507) is located directly below the water outlet trough (204) and contacts the bottom end of the partition plate (203); A fixing rod (508) is fixed on the side plate of the water removal chamber, a scraper (509) is fixed on the rod body of the fixing rod (508), and the top plate body of the scraper (509) is pressed against the water absorption belt (507).

3. The explosion-proof water-cooled inverter according to claim 2, characterized in that: The driving member (8) comprises a worm wheel (801) fixed on the rod body of the reciprocating screw rod (502) and a worm (802) movably connected to the housing (1), the worm (802) and the worm wheel (801) being meshed; A second pulley (805) is fixed on the shaft bodies of two first rotating shafts (505) extending out of the box body (1), a second belt (806) is connected between the two second pulleys (805), a fixing plate (807) is fixed on the side of the box body (1), a motor (808) is fixed on the plate body of the fixing plate (807), and an output end of the motor (808) is fixed to the end of the first rotating shaft (505); A first pulley (803) is fixed on the shaft body of one of the first rotating shafts (505) and on the shaft body of the worm (802) extending out of the box body (1), and a first belt (804) is connected between the two first pulleys (803).

4. The explosion-proof water-cooled inverter according to claim 1, characterized in that: The water volume indicator is a liquid flow meter (7) which is connected to the pipe body of the drainage pipe (6).

5. The explosion-proof water-cooled inverter according to claim 1, characterized in that: The air intake assembly (9) comprises an annular shell (901), two extension plates (902) are formed on the inner side of the annular shell (901), a support plate (903) is fixed between the inner walls of the annular shell (901), a vertical rod (904) is fixed on the top of the support plate (903), a water retaining plate (905) is fixed on the top of the vertical rod (904), an insert plate (906) is formed on the outer side of the water retaining plate (905), and the insert plate (906) extends into a U-shaped groove formed by the two extension plates (902).

6. The explosion-proof water-cooled inverter according to claim 5, characterized in that: The top plate body of the water retaining plate (905) is in a curved surface shape.

7. The explosion-proof water-cooled inverter according to claim 1, characterized in that: A gas dispersion member (11) is provided on the side wall of the box body (1), and the cold air discharged through the cold air outlet pipe (10) is dispersed through the gas dispersion member (11).

8. The explosion-proof water-cooled inverter according to claim 7, characterized in that: The gas dispersion member (11) comprises a connecting plate (111), a fixing tube (112) being fixed on the plate body of the connecting plate (111), a plug hole being provided at the bottom of the fixing tube (112), and the plug hole being adapted to fit the cold air outlet tube (10); A movable shaft (113) is movably connected to the side wall of the fixed tube (112), and a plurality of windmill blades (114) are fixed on the shaft body of the movable shaft (113); A plurality of connecting rods (117) are fixed on the shaft body of the movable shaft (113), the ends of the connecting rods (117) are fixed to the rotating drum (115), and a plurality of inclined air outlet holes (116) are opened on the outer side of the rotating drum (115); After the driving force of the cold air is applied to the windmill blades (114), the windmill blades (114) drive the movable shaft (113) and the rotating drum (115) to rotate.

9. The explosion-proof water-cooled inverter according to claim 1, characterized in that: A circular through groove is provided at the top of the box body (1), and a pressure relief device (12) is provided at the top of the circular through groove, and the pressure generated by the explosion in the box body (1) is relieved by the pressure relief device (12).

10. The explosion-proof water-cooled inverter according to claim 9, characterized in that: The pressure relief device (12) comprises a bursting disc (121) fixed to the top of the circular through groove, a first baffle plate (122) and a second baffle plate (123) are fixed to the top of the box body (1), and the first baffle plate (122) and the second baffle plate (123) are located outside the bursting disc (121); A plurality of pressure relief holes are provided on the plate bodies of the first baffle plate (122) and the second baffle plate (123), and the pressure relief holes on the plate bodies of the first baffle plate (122) and the second baffle plate (123) are arranged in a staggered manner; A top cover (124) is fixed to the top of the first baffle plate (122) and the second baffle plate (123), a second air pressure sensor is fixed to the inner wall of the top cover (124), a vertical groove is formed on the outer side of the top cover (124), a folding sealing cloth (126) is fixed in the vertical groove, a counterweight (125) is fixed to the bottom end of the folding sealing cloth (126), and an electromagnet (127) is fixed to the outer side of the top cover (124); The electromagnet (127) and the counterweight (125) are magnetically attracted to each other, and the electromagnet (127) is electrically connected to the controller.

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