An air-cooled integrated DC ice melting device

Abstract

The present invention discloses an air-cooled integrated DC ice-melting device, belonging to the technical field of DC ice-melting. The device addresses the problem of fan damage affecting the ice-melting efficiency of the ice-melting device. The technical solution to this problem mainly includes a frame and a control system, an ice-melting device, and a cooling device. The ice-melting device includes a thyristor valve assembly and a power supply electrically connected to the thyristor valve assembly. The thyristor valve assembly is provided with multiple thyristor valve assemblies, and the multiple thyristor valve assemblies are divided into multiple units. The cooling device includes a centrifugal fan and a cooling channel. The cooling channel includes the centrifugal fan, a main cooling channel, and sub-cooling channels. The multiple sub-cooling channels are connected to the main cooling channel. The multiple sub-cooling channels are each provided with a heat dissipation air inlet. Cold air enters the sub-cooling channels through the heat dissipation air inlet. Two centrifugal fans are provided. The present invention primarily prevents the ice-melting efficiency of the ice-melting device from being affected by damage to a single fan.

Description

Technical Field

[0001] The present invention relates to the technical field of direct current ice melting, in particular to an air-cooled integrated direct current ice melting device. Background Art

[0002] In recent years, damage to power transmission equipment caused by freezing rain has become a frequent occurrence, and the resulting economic losses have become a problem that cannot be ignored. Severe ice coverage has damaged multiple transmission towers, impacting the safe and stable operation of the power grid. Repairing damaged towers is also expensive, consuming significant manpower and material resources. Furthermore, performing repairs in rainy and snowy weather poses significant challenges to maintenance personnel and poses significant safety risks.

[0003] DC de-icing equipment uses a short-circuit DC current to generate heat in the conductor's resistance, melting the ice. To operate, the three phases at the end of the line to be de-iced are short-circuited. Power is drawn from the low-voltage side of the substation transformer, which then outputs DC current through a rectifier. The device is then adjusted to achieve the desired de-icing current.

[0004] The prior art CN202010823999.5 discloses a heat dissipation structure for a vehicle-mounted mobile ice melting device, which includes a box body, an air collecting device, an air outlet device and a fan; the vehicle-mounted mobile ice melting device includes a rectifying valve group; the box body is provided with an inner cavity, one side of the box body is provided with an air inlet connected to the inner cavity, and the other side of the box body is provided with an air outlet; the air collecting device is provided with an air collecting cavity and an air collecting outlet for connecting the air collecting cavity and the inner cavity; the rectifying valve group is connected to the air collecting device and connected to the air collecting outlet; the air outlet device is provided with an air outlet channel connected to the air outlet; the fan is installed in the air outlet channel, and the air suction port of the fan is connected to the air collecting cavity, so that the fan is operated to draw the air in the inner cavity through the rectifying valve group and the air collecting cavity in turn and then enters the air outlet channel for discharge.

[0005] In the above-mentioned prior art, each rectifier valve group is equipped with a fan. When the ice melting device is working, multiple rectifier valve groups usually operate together. When the fan corresponding to one of the rectifier valve groups is damaged, the corresponding rectifier valve group cannot dissipate heat in time and is damaged as the temperature rises, causing the ice melting equipment to need to be shut down for maintenance, thereby affecting the ice melting efficiency of the ice melting equipment. Summary of the Invention

[0006] The purpose of the present invention is to provide an air-cooled integrated DC ice melting device to solve the problem that the ice melting efficiency of the ice melting device is affected by the damage of the fan, and to avoid the ice melting efficiency of the ice melting device being affected by the damage of a single fan.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: an air-cooled integrated DC ice melting device, comprising a frame and a control system, an ice melting device and a cooling device arranged on the frame, the control system being electrically connected to the ice melting device and the cooling device, the ice melting device comprising a thyristor valve group and a power supply electrically connected to the thyristor valve group, the thyristor valve group being provided with a plurality of thyristor valve groups, the plurality of thyristor valve groups being divided into a plurality of units, the thyristor valve groups of the plurality of units being arranged side by side, the cooling device comprising a centrifugal fan and a cooling channel, the cooling channel comprising a main cooling channel connected to an air inlet of the centrifugal fan and a plurality of sub-cooling channels for respectively dissipating heat from the thyristor valve groups of the plurality of units, the plurality of sub-cooling channels being connected to the main cooling channel, the plurality of sub-cooling channels each being provided with a heat dissipation air inlet at one end away from the centrifugal fan, the cold air entering the sub-cooling channel from the heat dissipation air inlet under the action of the centrifugal fan to dissipate heat from the thyristor valve group, and then entering the main cooling channel and the centrifugal fan in sequence, two centrifugal fans being provided on the frame in a one-for-use and one-for-reserve manner.

[0008] After adopting the above technical scheme, the present invention has the following advantages: the control system, ice melting device and cooling device are arranged on the rack, which is convenient for the synchronous handling of the control system, ice melting device and cooling device during transportation, thereby effectively avoiding the loss of components during use; a main cooling channel and a sub-cooling channel are arranged on the rack, and the thyristor valve group of the same unit is placed in a sub-cooling channel. After the ice melting device starts to melt ice, the centrifugal fan is started, so that cold air enters the sub-cooling channel from the heat dissipation air inlet, dissipates heat for the thyristor valve group located in the sub-cooling channel, and reduces the possibility of overheating and damage of the thyristor valve group due to excessive temperature; the cold air entering the sub-cooling channel dissipates heat for the thyristor valve group, and then enters the centrifugal fan through the main cooling channel and is discharged, thereby reducing the air temperature in the sub-cooling channel The possibility of the cold air in the sub-cooling channel being too high is effectively avoided, which is not conducive to the heat dissipation of the thyristor valve group; compared with the prior art CN202010823999.5, two centrifugal fans are set on the rack in a one-in-one-standby manner. When one centrifugal fan is damaged, it is only necessary to switch to the standby centrifugal fan for heat dissipation, and the ice melting device does not need to be shut down for maintenance, thereby improving the ice melting efficiency of the ice melting device; when using two centrifugal fans with one in use and one in standby, multiple thyristor valve groups of the same unit share one sub-cooling channel, reducing the number of air ducts required to be set on the rack, thereby reducing the overall volume of the ice melting equipment, facilitating the subsequent transportation of the ice melting equipment, and smaller ice melting equipment can be used in relatively more rugged mountainous areas, thereby improving the applicability of the ice melting equipment as a whole.

[0009] Furthermore, the rack is provided with a mounting frame, and the internal space of the mounting frame forms a sub-cooling channel. One mounting frame surrounds a unit of thyristor valve group, and the heat dissipation air inlet is located on a side wall of the mounting frame away from the centrifugal fan. A plurality of first mounting plates are provided in the mounting frame, and the plurality of first mounting plates divide the sub-cooling channel into sub-spaces for accommodating a single thyristor valve group. A connecting port for connecting two adjacent sub-spaces is provided on the first mounting plate.

[0010] By adopting the above-mentioned technical solution, a mounting frame is set on the rack, and a sub-cooling channel surrounding the thyristor valve group of a unit is formed through the mounting frame to ensure that cold air enters the mounting frame to dissipate heat for the thyristor valve group. A first mounting plate is set in the mounting frame so that the space in the mounting frame forms a sub-space for accommodating a single thyristor valve group, avoiding mutual influence between the thyristor valve groups of the same unit; a connecting port is set on the first mounting plate to ensure that adjacent sub-spaces can be connected to each other, and the cold air entering from the heat dissipation air inlet can enter their respective spaces in turn and flow into the total cooling channel, ensuring that the cold air can contact the thyristor valve groups of the same unit for heat dissipation.

[0011] Furthermore, the mounting frame includes a second mounting plate, which extends along the extension direction of the sub-cooling channel, and is provided with an auxiliary heat dissipation air inlet connected to multiple sub-spaces. The second mounting plate is provided with a wind shield for blocking or opening the auxiliary heat dissipation air inlet.

[0012] By adopting the above-mentioned technical solution, since the thyristor valve group of a unit located in the same sub-cooling channel has multiple thyristor valve groups, and the heat dissipation air inlet is located on the side of the sub-cooling channel away from the centrifugal fan, cold air enters the sub-cooling channel. As the air cools the heat, the cooling effect of the thyristor valve group on the side of the sub-cooling channel close to the main cooling channel is worse than the cooling effect of the thyristor valve group on the side away from the main cooling channel; by arranging the second mounting plate to extend along the extension direction of the sub-cooling channel, and arranging an auxiliary heat dissipation air inlet connected to multiple sub-spaces on the second mounting plate, and then arranging a wind shield on the second mounting plate for blocking or opening the auxiliary heat dissipation air inlet, when the heat dissipation effect of the thyristor valve group close to the main cooling channel is not good, the wind shield can be opened to allow cold air to enter the sub-cooling channel from the auxiliary heat dissipation air inlet to dissipate heat for the thyristor valve group, thereby ensuring the heat dissipation effect of each thyristor valve group in the sub-cooling channel, and further ensuring that the operation stability of multiple thyristor valve groups in the same unit is comparable.

[0013] Furthermore, a ventilation panel is provided at the auxiliary heat dissipation air inlet, and a plurality of different vents are provided on the ventilation panel, and the plurality of vents are distributed along the length direction of the sub-cooling channel. The second mounting plate is provided with a first drive assembly and a second drive assembly for respectively driving the wind shield and the ventilation panel to move along the length direction of the sub-cooling channel. The first drive assembly and the second drive assembly are both electrically connected to the control system. The wind shield has a shielding portion and a ventilation portion. When the ventilation portion is aligned with a group of vents, it assists in heat dissipation, and the shielding portion shields the remaining groups of vents.

[0014] By adopting the above-mentioned technical solution, when the temperature of some thyristor valve groups of multiple thyristor valve groups in the same unit is too high, the auxiliary heat dissipation air inlet is opened through the ventilation panel; when the auxiliary heat dissipation air inlet is opened, since the air volume in the sub-cooling channel is constant, air is taken in at the auxiliary heat dissipation air inlet, and the air volume in the sub-cooling channel away from the centrifugal fan side will be affected; by arranging the ventilation panel and the vent at the auxiliary heat dissipation air inlet, when the temperature of the thyristor valve group is too high but the required air volume is relatively small, the wind shield is moved by the first drive component so that the ventilation part on the wind shield is aligned and connected with a group of vents, and the air volume entering the sub-cooling channel is controlled, which can not only reduce the temperature of the thyristor valve group with a higher temperature, but also reduce the impact on the heat dissipation of the thyristor valve group away from the main cooling channel, so that the stability of each thyristor valve group in the same unit is comparable, thereby improving the stability of the operation of the ice melting device.

[0015] Furthermore, the multiple groups of vents include first vents, second vents and third vents of the same width, multiple first vents are provided along the up and down directions, and the heights of the multiple first vents are the same, multiple second vents are provided along the up and down directions, and the heights of the multiple second vents gradually decrease from top to bottom, and multiple third vents are provided along the up and down directions, and the heights of the multiple third vents gradually increase from top to bottom.

[0016] In ice-melting equipment, the temperature distribution of multiple thyristors in a thyristor valve group is mainly affected by the heat dissipation design, power distribution, electrical connection method, and environmental factors. Therefore, when designing a thyristor valve group, a silicon stack structure with a radiator and thyristors in series is usually adopted, and a same-phase anti-parallel design is used to reduce magnetic flux interference or line reactance, so that the heat dissipation conditions of each thyristor are similar. However, if one of the radiators ages or is damaged due to long-term use, the temperature of some thyristors may easily increase.

[0017] With the above technical solution, when the temperatures of the thyristors in the thyristor valve group are similar and higher than the preset temperature of the thyristors, and the temperature difference is small, the auxiliary cooling air required for heat dissipation is small. The windshield is moved by the first drive assembly so that the ventilation portion is aligned and connected with the first ventilation port, ensuring that the air volume entering the subspace to dissipate heat for the thyristors is appropriate and the air volume corresponding to each thyristor is similar, thereby ensuring that each thyristor valve group dissipates heat equally. When the lower portion of the radiator is damaged, causing the temperature of each thyristor to gradually increase from top to bottom, the ventilation portion is aligned and connected with the third ventilation port to ensure that the temperature of each thyristor after heat dissipation is similar. When the upper portion of the radiator is damaged, causing the temperature of each thyristor to gradually increase from bottom to top, the ventilation portion is aligned and connected with the second ventilation port. By setting the first, second, and third ventilation ports of the same width, according to the temperature conditions of multiple thyristors in the same thyristor valve group, the corresponding auxiliary cooling air inlet is opened, or the first, second, or third ventilation ports are aligned and opened with the ventilation portion, to ensure the heat dissipation effect of each thyristor.

[0018] Furthermore, the thyristor valve group includes multiple thyristors and radiators alternately distributed in the upper and lower directions. The radiators are located on the upper and lower sides of the thyristors to dissipate heat from the thyristors. There are multiple connecting ports distributed in the upper and lower directions, and the thyristors are located at the connecting ports.

[0019] With the above technical solution, the thyristor is located at the communication port, so that the cold air entering the subspace through the communication port can directly contact the thyristor, dissipate heat from the thyristor, and improve the heat dissipation effect of the thyristor.

[0020] Furthermore, a temperature sensor for monitoring the temperature of the thyristor valve group is provided in the sub-cooling channel, and the temperature sensor is electrically connected to the control system.

[0021] Using the above-mentioned technical solution, a temperature sensor is set in the sub-cooling channel, and the temperature of the thyristor valve group is detected by the temperature sensor, and the temperature is transmitted to the control system, so that the control system can issue an alarm message according to the temperature conditions for the staff to judge whether to open the wind shield or ventilation panel, or open and close the vents on the wind shield or ventilation panel through the control system. The power of the centrifugal fan can also be controlled by the control system to ensure the heat dissipation effect of the thyristor valve group.

[0022] Furthermore, the thyristor valve group includes a thyristor, a radiator and a pressing force adjustment module. A mounting frame is provided on the rack, and the thyristor and the radiator are both arranged on the mounting frame. The radiator and the thyristor are arranged alternately and both ends are radiators. The pressing force adjustment module is provided on the mounting frame and presses downward against the radiator so that the radiator is in contact with the thyristor.

[0023] By adopting the above-mentioned technical solution, the thyristor valve group is arranged in the form of a thyristor, a radiator and a pressing force adjustment module. The thyristors and the radiators are arranged alternately and both ends are radiators. The upper and lower sides of the thyristor are cooled by the radiator, and then the side walls of the thyristor are cooled by the cold air in the sub-cooling channel to ensure the heat dissipation effect of the thyristor; the upper and lower sides of the thyristor are kept in contact with the radiator through the pressing force adjustment module, ensuring the heat dissipation effect of the thyristor on the radiator, and then ensuring the heat dissipation effect of the thyristor valve group.

[0024] Furthermore, the clamping force adjustment module includes a top block, a sleeve, an elastic member and a fastener. The sleeve is slidably arranged on the mounting frame and is located above the radiator. The top block is sleeved on the lower end of the sleeve. The fastener is threadedly connected to the sleeve. The lower end of the fastener is connected to the top block. Twisting the fastener drives the top block to slide up and down relative to the sleeve. The elastic member is arranged between the sleeve and the mounting frame and presses downward against the sleeve so that the top block is pressed downward against the radiator.

[0025] By adopting the above-mentioned technical solution, when it is necessary to adjust the tightness between the thyristor and the radiator, the fastener is screwed to drive the top block to move up and down, thereby adjusting the distance between the lower surface of the top block and the upper surface of the upper pressure plate, and then the elastic member is pressed downward against the sleeve to adjust the tightness between the thyristor and the radiator to avoid damage to the thyristor or radiator due to over-tightening, or affecting the heat dissipation effect of the thyristor due to over-loosening; the adjustment accuracy of the clamping force adjustment module is improved by threading the fastener with the sleeve and driving the top block to move up and down, to avoid damage to the thyristor or radiator due to too low adjustment accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of an air-cooled integrated DC ice melting device according to the present invention;

[0028] Figure 2 is a schematic diagram of an ice melting device and a cooling device of the present invention;

[0029] Figure 3 Schematic diagram of the distribution of the cooling device and the ice melting device of the present invention;

[0030] Figure 4 This is a schematic diagram of the installation of the mounting frame and the thyristor valve assembly of the present invention;

[0031] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0032] Figure 6 It is a partial structural diagram of the installation frame in the present invention;

[0033] Figure 7is a schematic diagram of a ventilation panel in the present invention;

[0034] Figure 8 is a schematic diagram of a windshield in the present invention;

[0035] Figure 9 It is a structural diagram of the thyristor valve group in the present invention;

[0036] Figure 10 Schematic diagram of the installation of capacitors and resistors in the present invention;

[0037] Figure 11 is a cross-sectional view of the pressing force adjustment module of the present invention;

[0038] Figure 12 Schematic diagram of the distribution of the thyristor valve group and the auxiliary heat dissipation air inlet in the present invention. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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, not all of the embodiments.

[0040] The terms "first," "second," and so on (if any) in the specification and claims of this invention are used to distinguish similar items, not to describe a specific order or precedence. Even if "second" is used to distinguish a technical feature, it does not necessarily imply the presence of "first." It should be understood that, in this invention, "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. It should be understood that, in this invention, "plurality" refers to two or more items. "And / or" simply describes an association between related items, indicating that three possible relationships exist. For example, "X and / or Y" can mean: X exists alone; X and Y exist simultaneously; or Y exists alone. The character " / " generally indicates that the related items are in an "or" relationship. "Including X, Y, and Z" means including all three of X, Y, and Z. "Including X, Y, or Z" means including any one of X, Y, and Z. "Including X, Y, and / or Z" means including any one, any two, or any three of X, Y, and Z.

[0041] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0042] like Figure 1 and Figure 2As shown, the present invention provides an air-cooled integrated DC ice melting device, including a frame 1 and a control system 2, an ice melting device 3 and a cooling device 4 arranged on the frame 1. The control system 2 is electrically connected to the ice melting device 3 and the cooling device 4. The ice melting device 3 is connected to the cable to be melted. The cooling device 4 is used to cool the ice melting device 3 to ensure that the various components of the ice melting device 3 can work normally; the ice melting device 3 includes a thyristor valve group 32 and a power supply 31 electrically connected to the thyristor valve group 32. The power supply 31 is a high-frequency power supply; the thyristor valve group 32 is used to convert the alternating current of the high-frequency power supply into direct current; as shown Figure 2 and Figure 3 As shown, a plurality of thyristor valve groups 32 are provided on the rack 1, and the plurality of thyristor valve groups 32 are divided into a plurality of units, and the thyristor valve groups 32 of the plurality of units are arranged side by side; Figure 2 and Figure 3 As shown, the cooling device 4 includes a centrifugal fan 41 and a cooling channel. The cooling channel includes a main cooling channel 42 connected to the air inlet of the centrifugal fan 41 and multiple sub-cooling channels 43 for dissipating heat to the thyristor valve groups 32 of multiple units respectively. The multiple sub-cooling channels 43 are all connected to the main cooling channel 42; Figure 3 As shown, specifically, twelve thyristor valve groups 32 are provided on the rack 1, and the twelve thyristor valve groups 32 are divided into two units. The thyristor valve groups 32 of the two units are arranged side by side and in parallel. There are two corresponding sub-cooling channels 43, and the thyristor valve groups 32 of one unit are all located in the same sub-cooling channel 43. The six thyristor valve groups 32 of the same unit are arranged in a row in the sub-cooling channel 43. The main cooling channel 42 is located at the end of the sub-cooling channel 43, and the sub-cooling channel 43 is connected to the cooling channel 43. A heat dissipation air inlet 51 is provided at one end away from the centrifugal fan 41. Under the action of the centrifugal fan 41, cold air enters the sub-cooling channel 43 from the heat dissipation air inlet 51 and contacts the thyristor valve group 32, thereby dissipating heat from the thyristor valve group 32. After dissipating heat from the thyristor valve group 32, the air enters the main cooling channel 42 and then enters the centrifugal fan 41 for discharge, so that the air alternately enters the sub-cooling channel 43 to dissipate heat from the thyristor valve group 32, thereby ensuring the heat dissipation effect of the thyristor valve group 32.

[0043] In this embodiment, if Figure 3 As shown, two centrifugal fans 41 are provided on the frame 1 in a one-in-use and one-in-standby manner; specifically, two centrifugal fans 41 are provided on the frame 1, one of which is in use and the other is in standby. When the centrifugal fan 41 in use is damaged, the centrifugal fan 41 in standby is switched to dissipate heat for the thyristor valve group 32, and the damaged centrifugal fan 41 is repaired, thereby avoiding the shutdown of the ice melting device 3 due to the repair of the damaged centrifugal fan 41, thereby improving the ice melting efficiency.

[0044] Specifically, such as Figure 3As shown, a mounting frame 5 is provided on the rack 1, and the internal space of the mounting frame 5 forms a sub-cooling channel 43. One mounting frame 5 surrounds the thyristor valve group 32 of one unit. In the case where there are two units of thyristor valve groups 32 on the rack 1, there are two mounting frames 5 on the rack 1. The main cooling channel 42 is located at the same end of the two sub-cooling channels 43 and is connected to the two sub-cooling channels 43. The centrifugal fan 41 is located on the side of the main cooling channel 42 facing away from the sub-cooling channel 43. The heat dissipation air inlet 51 is located on a side wall of the sub-cooling channel 43 away from the centrifugal fan 41, ensuring that one centrifugal fan 41 can dissipate heat for the thyristor valve groups 32 of the two units at the same time; further, the mounting frame 5 A plurality of first mounting plates 501 are provided inside, and the plurality of first mounting plates 501 are distributed along the distribution direction of the sub-cooling channel 43, the main cooling channel 42 and the centrifugal fan 41. The plurality of first mounting plates 501 divide the sub-cooling channel 43 into sub-spaces for accommodating a single thyristor valve group 32, and the single thyristor valve group 32 is placed in the sub-space to reduce the possibility of mutual influence between two adjacent thyristor valve groups 32; in this embodiment, a connecting port 5011 connecting two adjacent sub-spaces is provided on the first mounting plate 501. Through the setting of the connecting port 5011, it is ensured that the wind entering from the heat dissipation air inlet 51 can enter each sub-space to dissipate heat for the six thyristor valve groups 32 of the mounting frame 5.

[0045] In this embodiment, if Figure 4 and Figure 5 As shown, the thyristor valve group 32 includes a plurality of thyristors 321 and radiators 322 that are alternately distributed in the vertical direction. The number of radiators 322 is one more than the number of thyristors 321. Specifically, there are eight thyristors 321 and nine radiators 322. The nine radiators 322 and the eight thyristors 321 are alternately distributed, and the radiators 322 are located at the top and bottom, so that the upper and lower sides of the thyristors 321 are in contact with the radiators 322, thereby improving the heat dissipation effect of the upper and lower sides of each thyristor 321. Figure 3 and Figure 5 As shown, there are eight connecting ports 5011 distributed along the up and down directions on the first mounting plate 501, the thyristors 321 are located at the connecting ports 5011, and the eight connecting ports 5011 correspond one-to-one to the eight thyristors 321. The wind entering the subspace through the connecting ports 5011 first directly contacts the thyristors 321, thereby improving the heat dissipation effect of the thyristors 321.

[0046] In another embodiment, if Figure 3As shown, the mounting frame 5 includes a second mounting plate 502, and the second mounting plate 502 extends along the extension direction of the sub-cooling channel 43; specifically, the two mounting frames 5 are each provided with a second mounting plate 502, and the two second mounting plates 502 are located on the opposite side of the two mounting frames 5, and the second mounting plate 502 is provided with a plurality of auxiliary heat dissipation air inlets 52 connected to the sub-space, and the auxiliary heat dissipation air inlet 52 is located between two adjacent thyristor valve groups 32, and the corresponding first mounting plate 501 is located on the side of the auxiliary heat dissipation air inlet 52 facing the total cooling channel 42. Through the setting of the auxiliary heat dissipation air inlet 52, the cold air for cooling the thyristor 321 can enter the sub-cooling channel 43 from the side, thereby ensuring the heat dissipation effect of the thyristor valve group 32, as shown in FIG. Figure 6 As shown, a windshield 53 for blocking or opening the auxiliary heat dissipation air inlet 52 is provided on the second mounting plate 502. Whether the auxiliary heat dissipation air inlet 52 needs to be opened can be determined according to the heat dissipation needs of the thyristor valve group 32 to ensure the heat dissipation effect of the thyristor valve group 32, thereby ensuring the ice melting efficiency of the ice melting device 3.

[0047] In this embodiment, if Figure 6 、 Figure 7 As shown, a ventilation panel 54 is provided at the auxiliary heat dissipation air inlet 52, and a plurality of different ventilation holes are provided on the ventilation panel 54, and the plurality of ventilation holes are distributed along the length direction of the sub-cooling channel 43. The second mounting plate 502 is provided with a first driving assembly and a second driving assembly for driving the windshield plate 53 and the ventilation panel 54 to move along the length direction of the sub-cooling channel 43, respectively. Figure 8 As shown, the windshield 53 includes a shielding portion 532 and a ventilation portion 531. The first driving component is used to drive the windshield 53 to move along the length direction of the sub-cooling channel 43, and the second driving component is used to drive the ventilation panel 54 to move along the length direction of the sub-cooling channel 43, thereby opening the auxiliary heat dissipation air inlet 52, or the ventilation portion 531 is aligned and connected with a group of ventilation ports, and the shielding portion 532 blocks the remaining groups of ventilation ports; specifically, according to the heat dissipation requirements of the thyristor valve group 32, the first driving component drives the windshield 53 to move, so that the ventilation portion 531 on the windshield 53 is aligned and connected with the corresponding ventilation ports to assist the thyristor valve group 32 in heat dissipation; when the air volume required for heat dissipation of the thyristor valve group 32 is large, the second driving component can be used to drive the ventilation panel 54 to move to deviate from the auxiliary heat dissipation air inlet 52, and the first driving component can drive the windshield 53 to move to deviate from the auxiliary heat dissipation air inlet 52, thereby increasing the air intake at the auxiliary heat dissipation air inlet 52 and ensuring the heat dissipation effect of the thyristor valve group 32.

[0048] In ice-melting equipment, the temperature distribution of the multiple thyristors 321 of the thyristor valve group 32 is mainly affected by the heat dissipation design, power distribution, electrical connection method and environmental factors. Therefore, when designing the thyristor valve group 32, a silicon stack structure is usually adopted in which the radiator 322 and the thyristors 321 are connected in series, and a same-phase anti-parallel design is used to reduce magnetic flux interference or line reactance, so that the heat dissipation conditions of each thyristor 321 are close to each other. However, when one of the radiators 322 is used for too long or is damaged, the temperature of some thyristors 321 is likely to be high.

[0049] To ensure that the airflow from the vents corresponds to the heat dissipation requirements of the thyristor 321, in this embodiment, Figure 7 As shown, the multiple groups of vents include a first vent 541, a second vent 542 and a third vent 543, all of which have the same width in the extension direction of the sub-cooling channel 43. The first vent 541 is provided in multiple numbers along the up-down direction, and the heights of the multiple first vents 541 are the same. The second vent 542 is provided in multiple numbers along the up-down direction, and the heights of the multiple second vents 542 gradually decrease from top to bottom. The third vent 543 is provided in multiple numbers along the up-down direction, and the heights of the multiple third vents 543 gradually increase from top to bottom.

[0050] like Figures 1 to 9As shown, the thyristor valve group 32 also includes a temperature sensor for measuring the temperature of each thyristor 321. The temperature sensor is electrically connected to the control system 2. The control system 2 adjusts the ventilation part 531 and the first ventilation port 541, the second ventilation port 542 or the third ventilation port 543 according to the temperature received by the temperature sensor to align the air intake to dissipate heat for the thyristor 321. Specifically, when the control system 2 detects that the actual temperatures of multiple thyristors 321 on the same thyristor valve group 32 are similar according to the temperature sensor, and the actual temperatures are higher than the preset temperature of the thyristor 321, the control system 2 starts the first drive component The windshield 53 is driven to move, so that the first vent 541 and the ventilation part 531 are aligned to allow air to enter and dissipate heat for the thyristor 321. Here, "substantially the same" and "equivalent" mean that the temperature difference can be allowed to float within a certain range. When the radiator 322 at the lower part of the same thyristor valve group 32 is damaged, the temperature received by the control system 2 when the temperature sensor detects the temperature of the thyristor 321 shows a trend of increasing from high to low, and the actual temperature of the thyristor 321 at the lower part is higher than the preset temperature, the control system 2 starts the first drive component to drive the windshield 53 to move, so that the ventilation part 531 The air intake is aligned with the third vent 543 to dissipate heat for the thyristor 321, and multiple third vents 543 with heights gradually increasing from top to bottom are used to dissipate heat for the auxiliary air intake of the thyristor 321, ensuring that the actual temperatures of the multiple thyristors 321 of the same thyristor valve group 32 are basically the same after heat dissipation; when the upper radiator 322 of the same thyristor valve group 32 is damaged, resulting in the actual temperature of the thyristor 321 received by the control system 2 when the temperature of the thyristor 321 is detected by the temperature sensor to show a decreasing trend from high to low, and the temperature at the higher point is higher than the preset temperature, the control system 2 starts the first The drive assembly drives the windshield 53 to move, so that the ventilation portion 531 and the second vent 542 are aligned with the air intake to dissipate heat from the thyristor 321. Multiple second vents 542, whose heights gradually decrease from top to bottom, are used to assist the air intake and heat dissipation of the thyristor 321, ensuring that the actual temperatures of the multiple thyristors 321 in the same thyristor valve assembly 32 are substantially the same after heat dissipation. The height settings of the multiple first vents 541, multiple second vents 542, and multiple third vents 543 improve the heat dissipation effect of the thyristor 321, ensuring that the heat dissipation of the thyristor 321 allows the thyristor 321 to operate normally. It should be noted that the preset temperature in this embodiment is a temperature that allows the thyristor 321 to operate normally.In another embodiment, a fourth vent may be further provided on the ventilation panel 54. The width of the fourth vent is the same as that of the first vent 541, the second vent 542, and the third vent 543. The fourth vent is also distributed in a plurality of directions in the vertical direction according to the number of thyristors 321. The fourth vent located in the middle in the vertical direction has the largest height, the heights of the remaining fourth vents distributed from the middle upward gradually decrease, and the heights of the remaining fourth vents distributed from the middle downward also gradually decrease. When the radiator 322 located in the middle of the same thyristor valve group 32 ages and has poor heat dissipation effect or is damaged and cannot dissipate heat, the temperature of the thyristor 321 located in the middle is higher than that of the remaining thyristors 321 above and below. When the actual temperature of the thyristor 321 located in the middle is higher than the preset temperature of the thyristor 321, the control system 2 activates the first drive component to drive the windshield 53 to move, so that the ventilation portion 531 is aligned and connected with the fourth vent, and air enters through the fourth vent to assist in dissipating heat for the thyristor 321. By providing the second vent 542, the third vent 543 and the fourth vent, the possibility of some radiators 322 aging and having poor heat dissipation effect or some radiators 322 being damaged, which may affect the heat dissipation effect, is reduced; when individual radiators 322 are damaged, by providing the second vent 542, the third vent 543 and the fourth vent, it is also possible to avoid the need to shut down the ice melting equipment to replace the radiator 322 during use, which may affect the ice melting efficiency.

[0051] In another embodiment, if Figure 3 and Figure 9 As shown, the thyristor valve group 32 includes a plurality of thyristors 321 and a radiator 322 that are alternately distributed along the upper and lower directions. The radiator 322 is located on the upper and lower sides of the thyristor 321 to dissipate heat from the thyristor 321, effectively preventing the upper and lower sides of the thyristor 321 from being overly hot and affecting the operation of the thyristor valve group 32; a plurality of connecting ports 5011 are distributed along the upper and lower directions, and the thyristor 321 is located at the connecting ports 5011; the connecting ports 5011 are aligned with the thyristor 321 to improve the heat dissipation effect of the wind entering from the centrifugal fan 41 on the thyristor 321.

[0052] In this embodiment, a temperature sensor for monitoring the temperature of the thyristor valve group 32 is provided in the sub-cooling channel 43, and the temperature sensor is electrically connected to the control system 2; specifically, the temperature sensor is provided on the thyristor valve group 32, and the temperature sensor is electrically connected to the control system 2 to detect the temperature of the thyristor 321, thereby effectively preventing the thyristor 321 from having to be shut down for maintenance due to excessive temperature, and through the electrical connection between the temperature sensor and the control system 2, the control system 2 can adjust the power of the centrifugal fan 41 according to the received temperature to increase the heat dissipation speed or slow down the heat dissipation speed to reduce energy consumption; it can also determine whether auxiliary air intake is needed to dissipate heat based on the detection result of the temperature sensor.

[0053] In another embodiment, if Figure 3 and Figure 9 As shown, the thyristor valve group 32 includes a thyristor 321, a radiator 322 and a pressing force adjustment module 323. A mounting frame 324 is provided on the rack 1. The thyristor 321 and the radiator 322 are both provided on the mounting frame 324 and are both provided in plurality. The plurality of radiators 322 are alternately provided with the plurality of thyristors 321, and the number of radiators 322 is one more than the number of thyristors 321. Specifically, there are eight thyristors 321 and nine radiators 322, so that the upper and lower sides of each thyristor 321 are in contact with the radiator 322 for heat dissipation, thereby improving the heat dissipation effect of the thyristor 321. The pressing force adjustment module 323 is provided on the mounting frame 324 and presses downward against the radiator 322 to ensure that the upper and lower sides of the thyristor 321 can maintain contact with the radiator 322, further improving the heat dissipation effect of the upper and lower sides of the thyristor 321.

[0054] Specifically, such as Figure 5 、 Figure 9 and Figure 10 As shown, the mounting frame 324 includes an upper mounting plate 3242, a lower mounting plate 3241 and a fixing rod 3243. The upper mounting plate 3242 is connected to the rack 1 via a mounting flange. One end of the fixing rod 3243 is fixed to the lower mounting plate 3241 and the other end extends upward. The upper mounting plate 3242 is mounted on the top of the fixing rod 3243. The thyristor 321 and the radiator 322 are both mounted between the upper mounting plate 3242 and the lower mounting plate 3241. The radiator 322 is located between the two fixing rods 3243. The radiator 322 and the fixing rod 3243 are connected via a connecting frame 3221 with a connecting hole and the fixing rod 3243. The pressing force adjustment module 323 is mounted on the upper mounting plate 3242 and is located between the upper mounting plate 3242 and the uppermost radiator 322. Figure 9 and Figure 10As shown, the mounting frame 324 also includes a first side mounting plate 325 and a second side mounting plate 326, one end of the first side mounting plate 325 and the second side mounting plate 326 is connected to the upper mounting plate 3242, and the other end is connected to the lower mounting plate 3241, the first side mounting plate 325 and the second side mounting plate 326 are provided with resistors 3251, and multiple resistors 3251 are provided in the up and down directions; the outer wall of the second mounting plate 502 is provided with a third side mounting plate 327, a fourth side mounting plate 328 and a fifth side mounting plate 329 distributed along the length direction of the sub-cooling channel 43, a capacitor 3272 is provided between the fourth side mounting plate 328 and the fifth side mounting plate 329, and multiple capacitors 3272 are distributed in the up and down directions, the capacitor 3272 and the resistor 3251 are used to protect the thyristor 321, wherein the capacitor 3272 suppresses the voltage change at both ends of the thyristor 321, and the resistor 3251 suppresses the current change of the thyristor 321 when the capacitor 3272 discharges. A thyristor trigger board 3271 is installed between the third side mounting plate 327 and the fourth side mounting plate 328. This board is electrically connected to the thyristor 321 and the control system 2. Multiple thyristor trigger boards 3271 are distributed vertically, providing a photoelectric trigger signal to the thyristor 321. A magnetic ring capacitor 3272 is installed on the third side mounting plate 327, supplying energy to the thyristor trigger boards 3271 to ensure stable operation. A saturated reactor 3244 is installed on the upper mounting plate 3242. This saturated reactor suppresses current fluctuations, protects the thyristor 321, smoothes the grid current, and suppresses harmonics.

[0055] In this embodiment, in order to facilitate the adjustment of the pressing force between the thyristor 321 and the heat sink 322, as shown in FIG. Figure 9 and Figure 11As shown, the pressing force adjustment module 323 includes a top block 3234, a sleeve 3231, an elastic member 3233 and a fastener 3232. The sleeve 3231 is slidably arranged on the upper mounting plate 3242 and is located above the radiator 322. The top block 3234 is sleeved on the lower end of the sleeve 3231. The fastener 3232 is threadedly connected to the sleeve 3231. The lower end of the fastener 3232 is connected to the top block 3234. Twisting the fastener 3232 drives the top block 3234 to slide up and down relative to the sleeve 3231. The elastic member 3233 is arranged between the sleeve 3231 and the mounting bracket 324 and presses downward against the sleeve 3231 so that The top block 3234 presses downward against the radiator 322. When the worker needs to increase the pressing force through the pressing force adjustment module 323, the fastener 3232 drives the top block 3234 to move downward and press against the radiator 322 at the top, thereby increasing the pressing force between the radiator 322 and the thyristor 321. During the adjustment of the pressing force between the radiator 322 and the thyristor 321, the pressing force between the radiator 322 and the thyristor 321 is adaptively adjusted by the change in the compression amount of the elastic member 3233, thereby avoiding the situation where the radiator 322 and the thyristor 321 are damaged due to excessive pressing force caused by rigid adjustment.

[0056] In another embodiment, the present invention further discloses a control method for an ice melting device, which is used for the above-mentioned integrated DC ice melting device; specifically, Figure 3 and Figure 12As shown, the six thyristor valve groups 32 of a unit are respectively distributed in sequence as the first thyristor valve group 3201, the second thyristor valve group 3202, the third thyristor valve group 3203, the fourth thyristor valve group 3204, the fifth thyristor valve group 3205, and the sixth thyristor valve group 3206. Among them, the sixth thyristor valve group 3206 is close to the main cooling channel 42. There are five auxiliary heat dissipation air inlets 52 on the second mounting plate 502, namely the first auxiliary heat dissipation air inlet 521, the second auxiliary heat dissipation air inlet 522, the third auxiliary heat dissipation air inlet 523, the fourth auxiliary heat dissipation air inlet 524, and the fifth auxiliary heat dissipation air inlet 525. The air entering from the fifth auxiliary heat dissipation air inlet 525 enters the subspace from the connecting port 5011 under the action of the centrifugal fan 41 to dissipate heat for the sixth thyristor valve group 3206. The air entering from the fourth auxiliary heat dissipation air inlet 524 first dissipates heat for the fifth thyristor valve group 3205. The air entering from the third auxiliary heat dissipation air inlet 526 is cooled by the cooling fan 41. The wind entering from 523 first dissipates heat for the fourth thyristor valve group 3204, the wind entering from the second auxiliary heat dissipation air inlet 522 first dissipates heat for the third thyristor valve group 3203, and the wind entering from the first auxiliary heat dissipation air inlet 521 first dissipates heat for the second thyristor valve group 3202; the ice melting device also includes a temperature sensor connected to the control system 2 signal, the thyristor valve group 32 includes a plurality of thyristors 321, and the temperature sensor is used to detect the temperature of the thyristors 321; specifically, there are multiple temperature sensors, and the multiple temperature sensors correspond one-to-one to the multiple thyristors 321. The temperature sensor is electrically connected to the control system 2. The control system 2 establishes a first database according to the temperatures of the multiple thyristors 321 of a thyristor valve group 32, and has a total of twelve first databases. The first database includes a preset temperature T1 of the thyristor 321, the actual temperature T2 of the thyristor 321 detected by the temperature sensor, and the temperature floating value W1 allowed for the thyristor 321.

[0057] The control system 2 compares the preset temperature T1 corresponding to multiple actual temperatures T2 of the same thyristor valve group 32. If the actual temperature T2 of multiple thyristors 321 is equivalent to and higher than the preset temperature T1, and the difference between the actual temperature T2 and the preset temperature T1 is higher than the temperature floating value W1, the control system 2 starts the first drive component to drive the wind shield 53 to move to the ventilation part 531 and connect with the first ventilation port 541. The actual temperature T2 is equivalent, which means that the difference between the highest temperature and the lowest temperature among the actual temperatures of the eight thyristors 321 of the same thyristor valve group 32 is within a certain range. The size of this range can be set in the control system 2 according to actual needs. A simple example is as follows: when a thyristor valve group 32 tool has eight thyristors 321, their preset temperatures T1 are all 25°C, and the preset temperature T1 can also be set to different values ​​according to the heights of the thyristors 321. The allowable temperature floating value W1 is 5°C. The actual temperatures T2 detected by the eight thyristors 321 are 41°C, 41°C, 40°C, 40°C, 39°C, 39°C, 38°C, and 38°C from top to bottom. At this time, it can be clearly known that the actual temperatures T2 are all higher than the preset temperature T1, and the differences between the actual temperatures T2 and the preset temperature T1 are all higher than the allowable temperature floating value W1. In this case, the control system 2 starts the first drive component, and through the first drive component The component drives the wind shield 53 to move, so that the ventilation part 531 is aligned and connected with the first ventilation port 541. After the connection, the cold air contacts the thyristor 321 from the first ventilation port 541 and the connecting port 5011 in turn under the action of the centrifugal fan 41 to dissipate heat; if the actual temperature T2 of multiple thyristors 321 gradually increases from bottom to top and is higher than the preset temperature T1, and the difference between the actual temperature T2 of some thyristors 321 and the preset temperature T1 is higher than the temperature floating value W1, the control system 2 starts the first driving component to drive the wind shield 53 to move to the ventilation part 531 and connect with the second ventilation port 542; if the actual temperature T2 of multiple thyristors 321 gradually increases from top to bottom and is higher than the preset temperature T1, and the difference between the actual temperature T2 of some thyristors 321 and the preset temperature T1 is higher than the temperature floating value W1, the control system 2 starts the first driving component to drive the wind shield 53 to move to the ventilation part 531 and connect with the third ventilation port 543.

[0058] After the temperatures of the multiple thyristors 321 of a thyristor valve group 32 are adjusted, the temperatures of the six thyristor valve groups 32 of the same unit are adjusted. Specifically, the control system 2 calculates the total preset temperature T of the thyristor valve group 32 according to the preset temperatures T1 of the multiple thyristors 321 of the same thyristor valve group 32. 11 The control system 2 calculates the average value of the actual temperature T2 of the multiple thyristors 321 of the same thyristor valve group 32 detected by the temperature sensor to obtain the average actual temperature value T of the thyristor valve group 32. 21 Sequentially along the direction gradually away from the centrifugal fan 41 in turn compared with the average actual temperature T of the six thyristor valve group 3221 With the total preset temperature T 11 , and based on the comparison result and the temperature floating value W1, the windshield 53 and the ventilation panel 54 are driven to move synchronously through the electrical connection between the control system 2 and the first drive assembly and the second drive assembly to open or close the auxiliary heat dissipation air inlet 52. Specifically, the actual average temperature value T is calculated based on the actual temperature T2 of the eight thyristors 321 of the sixth thyristor valve group 3206. 21 , preset temperature T1 calculates the total preset temperature T of the thyristor valve group 32 11 , the control system 2 sets the total preset temperature T 11 The actual average temperature T 21 In contrast, when the actual average temperature value T 21 With the total preset temperature T 11 When the difference is higher than the allowable temperature floating value W1, the control system 2 starts the first drive component and the second drive component, driving the wind shield 53 and the ventilation panel 54 to move synchronously to open the fifth auxiliary heat dissipation air inlet 525 to dissipate heat for the sixth thyristor valve group 3206.

[0059] When the sixth thyristor valve group 3206 is cooled by opening the fifth auxiliary heat dissipation air inlet 525, when the power of the centrifugal fan 41 is constant, the air volume in the sub-cooling channel 43 is constant. When the fifth auxiliary heat dissipation air inlet 525 takes in air, it will inevitably affect the air volume at the fifth thyristor valve group 3205. At this time, the control system 2 controls the movement of the ventilation panel 54 and the wind shield 53 to open the fourth auxiliary heat dissipation air inlet 524 according to the temperature detected by the temperature sensor of the fifth thyristor valve group 3205, and controls the opening size of the fourth auxiliary heat dissipation air inlet 524 according to the detected temperature, and also adjusts the opening size of the fifth auxiliary heat dissipation air inlet 525 according to the impact of the opening of the fourth auxiliary heat dissipation air inlet 524 on the sixth thyristor valve group 3206; and opens the third auxiliary heat dissipation air inlet 523, the second auxiliary heat dissipation air inlet 522 and the first auxiliary heat dissipation air inlet 521 in sequence. By means of temperature detection by the temperature sensor and monitoring by the control system 2, the opening conditions and opening sizes of the first auxiliary heat dissipation air inlet 521, the second auxiliary heat dissipation air inlet 522, the third auxiliary heat dissipation air inlet 523, the fourth auxiliary heat dissipation air inlet 524, and the fifth auxiliary heat dissipation air inlet 525 are dynamically adjusted to ensure the heat dissipation of the six thyristor valve groups 32 of a unit and to ensure that the thyristors 321 will not be damaged due to overheating during the ice melting process.

[0060] In this embodiment, if the total actual temperature T of the six thyristor valve groups 32 of a unit is 21 All above the total preset temperature T 11 , and the total actual temperature T of the six thyristor valve groups 32 21With the total preset temperature T 11 If the difference is higher than the allowable temperature fluctuation value W1, the control system 2 controls the centrifugal fan 41 to increase the power of the centrifugal wind to increase the air volume in the sub-cooling channel 43 to dissipate heat. If the total actual temperature T of the six thyristor valve groups 32 of a unit is 21 Below the total preset temperature T 11 , the control system 2 can be used to control the centrifugal fan 41 to reduce the power of the centrifugal fan 41 to reduce energy consumption.

[0061] In addition to the above-mentioned preferred embodiments, the present invention has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. An air-cooled integrated DC ice melting device, comprising a frame and a control system, an ice melting device, and a cooling device mounted on the frame, wherein the control system is electrically connected to the ice melting device and the cooling device, and the ice melting device comprises a thyristor valve assembly and a power supply electrically connected to the thyristor valve assembly, characterized in that: The thyristor valve group is provided with several, and the several thyristor valve groups are divided into multiple units. The thyristor valve groups of multiple units are arranged side by side. The cooling device includes a centrifugal fan and a cooling channel. The cooling channel includes a main cooling channel connected to the air inlet of the centrifugal fan and multiple sub-cooling channels for respectively dissipating heat to the thyristor valve groups of multiple units. The multiple sub-cooling channels are connected to the main cooling channel. The ends of the multiple sub-cooling channels away from the centrifugal fan are all provided with a heat dissipation air inlet. Under the action of the centrifugal fan, the cold air enters the sub-cooling channel from the heat dissipation air inlet to dissipate the heat of the thyristor valve group, and then enters the main cooling channel and the centrifugal fan in sequence. The centrifugal fan adopts a one-in-one-standby mode in the machine. Two units are provided on the rack; the rack is provided with a mounting frame, the internal space of the mounting frame forms a sub-cooling channel, one mounting frame surrounds a unit of thyristor valve group, the heat dissipation air inlet is located on a side wall of the mounting frame away from the centrifugal fan, a plurality of first mounting plates are provided in the mounting frame, the plurality of first mounting plates divide the sub-cooling channel into sub-spaces accommodating a single thyristor valve group, the first mounting plate is provided with a connecting port connecting two adjacent sub-spaces; the mounting frame includes a second mounting plate, the second mounting plate extends along the extension direction of the sub-cooling channel, the second mounting plate is provided with an auxiliary heat dissipation air inlet connected with the plurality of sub-spaces, and the second mounting plate is provided with a wind shield for shielding or opening the auxiliary heat dissipation air inlet.

2. The air-cooled integrated DC ice melting equipment according to claim 1, characterized in that: A ventilation panel is provided at the auxiliary heat dissipation air inlet, and a plurality of different ventilation holes are provided on the ventilation panel, and the plurality of ventilation holes are distributed along the length direction of the sub-cooling channel. A first drive assembly and a second drive assembly are provided on the second mounting plate for driving the wind shield and the ventilation panel to move along the length direction of the sub-cooling channel respectively. The first drive assembly and the second drive assembly are both electrically connected to the control system. The wind shield has a shielding portion and a ventilation portion. When the ventilation portion is aligned with a group of ventilation holes, it assists in heat dissipation, and the shielding portion shields the remaining groups of ventilation holes.

3. The air-cooled integrated DC ice melting equipment according to claim 2, characterized in that: The multiple groups of ventilation holes include first ventilation holes, second ventilation holes and third ventilation holes of the same width. The first ventilation holes are provided in multiple numbers along the up-down direction and the heights of the multiple first ventilation holes are the same. The second ventilation holes are provided in multiple numbers along the up-down direction and the heights of the multiple second ventilation holes gradually decrease from top to bottom. The third ventilation holes are provided in multiple numbers along the up-down direction and the heights of the multiple third ventilation holes gradually increase from top to bottom.

4. The air-cooled integrated DC ice melting equipment according to claim 1, characterized in that: The thyristor valve group includes multiple thyristors and radiators alternately distributed along the upper and lower directions. The radiators are located on the upper and lower sides of the thyristors to dissipate heat from the thyristors. There are multiple communication ports distributed along the upper and lower directions, and the thyristors are located at the communication ports.

5. The air-cooled integrated DC ice melting equipment according to claim 1, characterized in that: A temperature sensor for monitoring the temperature of the thyristor valve group is provided in the sub-cooling channel, and the temperature sensor is electrically connected to the control system.

6. The air-cooled integrated DC ice melting equipment according to claim 1, characterized in that: The thyristor valve group includes a thyristor, a radiator and a pressing force adjustment module. A mounting frame is provided on the rack, and the thyristor and the radiator are both arranged on the mounting frame. The radiator and the thyristor are arranged alternately and both ends are radiators. The pressing force adjustment module is arranged on the mounting frame and presses downward against the radiator so that the radiator is in contact with the thyristor.

7. The air-cooled integrated DC ice melting equipment according to claim 6, characterized in that: The pressing force adjustment module includes a top block, a sleeve, an elastic member and a fastener. The sleeve is slidably arranged on the mounting frame and is located above the radiator. The top block is sleeved on the lower end of the sleeve. The fastener is threadedly connected to the sleeve. The lower end of the fastener is connected to the top block. Twisting the fastener drives the top block to slide up and down relative to the sleeve. The elastic member is arranged between the sleeve and the mounting frame and presses downward against the sleeve so that the top block is pressed downward against the radiator.

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