Cooling system of SVG equipment

Abstract

The invention discloses a cooling system of SVG (Static Var Generator) equipment, which comprises a machine room and SVG equipment arranged in the machine room, the cooling system comprises an air cooling unit, a cold air channel and a heat dissipation channel, the air cooling unit is arranged outside the machine room, the cold air channel is pre-embedded below the ground plane opposite to the channel between the SVG equipment, and the heat dissipation channel is arranged in the machine room. A plurality of first ventilation holes are formed in the upper surface of the cold air channel and used for introducing cold air into the area between the back channels; the heat dissipation channel is arranged at the top of the SVG equipment and above the back channel and is used for collecting hot air generated by the SVG equipment; the cold air channel is connected with an air outlet of the air cooling unit, and the heat dissipation channel is connected with an air inlet of the air cooling unit. According to the cooling system of the SVG equipment, closed-loop cooling and heat dissipation can be realized, and meanwhile, the cooling system is high in pertinence and high in heat dissipation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation and cooling of SVG equipment and other heat-generating electrical equipment, and in particular to a cooling system for SVG equipment. Background Art

[0002] SVG equipment (or other heat-generating electrical equipment) generates a lot of heat during operation. The external circulation mode that directly exhausts air outside the room is used on site to cool the SVG room. However, this method is greatly affected by external environmental factors such as dust and humidity. Long-term use of this method to dissipate heat will cause dust to accumulate on the internal circuit boards of the SVG. Once the dust accumulation reaches a certain level, it will cause short circuits in certain parts, thereby causing the SVG to stop operating. Summary of the invention

[0003] In view of the problems that the external circulation heat dissipation for SVG equipment or similar heat-generating electrical equipment in the prior art causes large amounts of dust and difficulty in controlling temperature and humidity, the present invention provides a cooling system for SVG equipment, which adopts internal circulation cooling and heat dissipation to effectively solve the heat dissipation and cooling problems of SVG equipment; and performs targeted circulation cooling on heat-concentrated parts, thereby improving heat dissipation efficiency.

[0004] The present invention is achieved through the following technical solutions:

[0005] A cooling system for SVG equipment comprises a machine room and SVG equipment arranged in the machine room, the cooling system comprises an air cooling unit, a cold air channel and a heat dissipation channel, the air cooling unit is arranged outside the machine room, the cold air channel is pre-buried below the ground plane of the back channel between the SVG equipment and the SVG equipment, and the upper surface of the cold air channel is provided with a plurality of first ventilation holes for introducing cold air into the area between the back channels; the heat dissipation channel is arranged on the top of the SVG equipment and above the back channel, for collecting hot air generated by the SVG equipment; the cold air channel is connected to the air outlet of the air cooling unit, and the heat dissipation channel is connected to the air inlet of the air cooling unit;

[0006] Wherein, the arrangement width of the first ventilation holes of the cold air channel is one third to one half of the width of the back channel.

[0007] Optionally, at least one group of cold air blowers is arranged in the cold air channel along the length direction.

[0008] Optionally, at least one group of valve components is arranged in the cold air channel along the length direction.

[0009] Optionally, the valve assembly includes a valve plate, a cylindrical locating pin and a detachable locking pin, the valve plate is located in the cold air channel, the cylindrical locating pin and the valve plate are integrally formed, the cylindrical locating pin is located in one of the first ventilation holes, the valve plate can rotate around the cylindrical locating pin, and the detachable locking pin is provided with at least one detachable locking pin that is not located in the first ventilation hole, and can be inserted into the first ventilation hole along the width direction or length direction of the cold air channel to lock the valve plate.

[0010] Optionally, the heat dissipation channel includes a heat collecting cover part and a connecting channel part. There are at least two heat collecting cover parts, and the two heat collecting cover parts are connected through the connecting channel part. A heat dissipation fan is arranged in the connecting channel part. The width of the connecting channel part is one quarter to one third of the width of the heat collecting cover part.

[0011] Optionally, a plurality of second ventilation holes for collecting hot air are provided at the bottom of the heat dissipation channel.

[0012] Optionally, a blocking component is provided at the bottom of the heat dissipation channel, for blocking the second ventilation hole of the heat dissipation channel when no SVG device is installed below the heat dissipation channel.

[0013] Optionally, the sealing assembly includes a film winding, and a guide track is arranged along the length direction or width direction of the heat dissipation channel. A slider component is arranged on the guide track, and the slider component is connected to the film on the film winding for pulling the film to slide along the guide track to cover the second ventilation hole.

[0014] Optionally, a locking pin is provided on the slider, and the locking pin can pass through the slider component and then be inserted into the second ventilation hole, thereby locking the slider component. A torsion spring is provided on the rotating shaft of the film winding, which can retract the film when the locking pin releases the lock on the slider component.

[0015] The technical solution of the present invention has at least the following beneficial effects:

[0016] The cooling system of the SVG device of the present invention can realize concentrated air convection processing for the key area where heat is generated by arranging a cold air channel and a heat dissipation channel in the back channel between the SVG devices, thereby improving the heat dissipation efficiency of the area; the cooling channel and the heat dissipation channel are both connected to the air cooling unit to form a closed-loop flow, which can effectively reduce the dust of the outdoor air from entering the machine room and facilitate the control of temperature and humidity.

[0017] At the same time, the layout width of the first ventilation hole of the cold air channel is limited, and it is arranged in the width range of one-third to one-half of the width of the back channel. While ensuring the air output, it can effectively avoid the exhausted cold air from blocking or clogging the hot air dissipated by the equipment, and reserve enough space for the hot air to be discharged, thereby taking away the hot air. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic top view of the cooling system of the SVG device of the present invention (the heat dissipation channel is omitted);

[0019] Figure 2 A schematic top view of the cooling system of the SVG device of the present invention;

[0020] Figure 3 A schematic side view of the cooling system of the SVG device of the present invention;

[0021] Figure 4 It is a top view of the arrangement of the valve assembly in the cold air channel of the present invention;

[0022] Figure 5 It is a cross-sectional view of the valve assembly in the cold air channel of the present invention in an open state;

[0023] Figure 6 It is a cross-sectional view of the valve assembly in the cold air channel of the present invention in a closed state;

[0024] Figure 7 A schematic side view of the heat dissipation channel of the present invention;

[0025] Figure 8 for Figure 7 Enlarged view of part a.

[0026] Icons: 10-air cooling unit, 20-cold air channel, 21-first ventilation hole, 22-detachable locking pin, 23-valve plate, 24-cylindrical positioning pin, 25-cold air fan, 30-SVG equipment, 40-heat dissipation channel, 41-heat dissipation fan, 42-film winding, 43-film, 44-slider component, 45-guide rail, 46-second ventilation hole, 47-locking pin, 50-machine room. DETAILED DESCRIPTION

[0027] Reference Figure 1-8The cooling system of the SVG device 30 of the present invention includes a machine room 50 and the SVG device 30 arranged in the machine room 50. The cooling system of this embodiment is not only for the SVG device 30, but also for heat-generating electrical equipment similar to the SVG device 30, such as switch cabinets, high and low voltage cabinets, etc. This type of electrical equipment is generally arranged back to back, with a back channel for arranging lines in the middle. Since most of the heat of the equipment is dissipated from the back and top, a heat concentration area is formed in the back channel and the top of the equipment, and the temperature is extremely high. Compared with the pedestrian passage in front of the equipment, the temperature is much higher. Therefore, the present invention designs a cooling system for the situation where the heat of this type of equipment is concentrated.

[0028] Among them, the cooling system includes an air-cooling unit 10, a cold air channel 20 and a heat dissipation channel 40. The air-cooling unit 10 is arranged outside the machine room 50. The air-cooling unit 10 adopts a conventional air-cooling principle device. This type of equipment has a radiator composed of a ventilation duct. By arranging a fan to air-cool the radiator, the air in the ventilation duct can be cooled. The present invention cools the equipment by introducing the air cooled by the air-cooling unit 10 into the machine room 50, and then recovers the hot air for air cooling, thus forming a closed-loop cooling system. By adopting this closed-loop cooling system, it is possible to effectively reduce the dust in the outdoor air from entering the machine room 50, and to facilitate the control of temperature and humidity. Of course, in the actual allowing process, in order to ensure the indoor air quality and the normal work of the operation and maintenance personnel, some fresh air will still be added, but the amount of fresh air added is small, and it will not introduce too much dust, nor will it have a significant impact on the temperature and humidity of the machine room 50.

[0029] Specifically, the cold air channel 20 is pre-buried below the ground level of the back channel between the SVG devices 30 and the SVG devices 30, and a plurality of first ventilation holes 21 are provided on the upper surface of the cold air channel 20, which are used to introduce cold air into the area between the back channels. One end of the cold air channel 20 is connected to the air outlet of the air cooling unit 10, and the other end adopts a closed structure, so that the cold air discharged from the air cooling unit 10 is discharged through the first ventilation holes 21, and the structure is relatively closed. As long as the fan power of the air cooling unit 10 is large, a high-pressure exhaust effect can be formed at the first ventilation holes 21, and the cold air can be quickly discharged from the ground level and then flow to the upper area of ​​the back channel. On the one hand, such flow can drive the hot air flow in the area, and on the other hand, more cold air is provided, thereby cooling the back area of ​​the equipment.

[0030] In order to prevent the cold air flow from hindering the heat dissipation of the hot air at the back of the device, the width h1 of the first ventilation hole 21 of the cold air channel 20 in the present embodiment is arranged to be one-third to one-half of the width h2 of the back channel, so as to ensure a certain gap between the flow area of ​​the cold air and the back of the device. If there is no such gap, the cold air can easily cause a sealing effect on the back of the device, and the hot air inside the device will be difficult to discharge. Therefore, retaining a certain gap not only ensures that the hot air can flow out, but also enables the outflowing hot air to flow with the upward-flowing cold air to form an airflow, and the hot air can be quickly carried away, so that the cold air has the opportunity to overflow into the device, forming heat exchange, thereby achieving a good heat dissipation effect.

[0031] At least one group of cold air fans 25 is arranged along the length direction of the cold air channel 20. Each group of cold air fans 25 can be one fan or multiple fans. The cold air fans 25 are arranged in the cold air channel 20 because when the cold air channel 20 is designed to be longer, the wind pressure close to the air cooling unit 10 is relatively large, while the wind pressure far away from the air cooling unit 10 is relatively small. The cold air fans 25 can be used to increase the pressure to ensure that the entire cold air channel 20 has a higher wind pressure.

[0032] The heat dissipation channel 40 is arranged on the top of the SVG device 30 and above the back channel, and is used to collect the hot air generated by the SVG device 30. When the cold air below passes through the back channel, it absorbs the hot air and finally becomes hot air, and finally collects and recovers through the heat dissipation channel 40. The heat dissipation channel 40 is connected to the air inlet of the air cooling unit 10, and after collection, it is introduced into the air cooling unit 10 for cooling, thus completing the entire closed loop.

[0033] When the equipment is arranged, it is generally arranged side by side. For the convenience of maintenance, it is usually partitioned in the middle to form a regional arrangement. The heat dissipation channel 40 includes a heat collection cover part and a connecting channel part. There are at least two heat collection cover parts. The two heat collection cover parts are connected through the connecting channel part. A heat dissipation fan 41 is arranged in the connecting channel part. The width h3 of the connecting channel part is one quarter to one third of the width h4 of the heat collection cover part. Each area corresponds to a heat collection cover. Between the areas, that is, the position of the crosswalk, a connecting channel part is arranged for connection. The connecting channel does not have a hole structure for collecting hot air, but only serves as a connection between the heat collection covers of different areas. By arranging the heat dissipation fan 41 in the connecting channel part, on the one hand, the flow speed of the hot air is increased. On the other hand, after the heat dissipation fan 41 is arranged in the connecting channel part in the narrow space, an axial flow effect will be formed in the length direction of the entire heat dissipation channel 40, which can effectively increase the flow speed of the hot air.

[0034] Taking the actual situation into consideration, the equipment is usually arranged in a certain order: a batch of equipment is installed in the first phase, and another batch of equipment is installed in the second phase. Since some structures of the cooling system need to be pre-buried, the various channels required will be arranged at one time according to the capacity of the computer room 50 in the early stage. However, after the channels are arranged, when the second phase equipment or subsequent equipment has not been installed in place, the vacant areas will also be cooled, which will waste cold air and cannot form a complete cooling system.

[0035] Therefore, in view of the above situation, at least one group of valve assemblies is arranged along the length direction in the cold air channel 20. By setting the valve assemblies, the cold air channel 20 can be closed by the valve assemblies in areas where cold air is not needed, so that cold air can flow to the required areas.

[0036] The present embodiment provides a simple, low-cost valve assembly, which includes a valve plate 23, a cylindrical locating pin 24 and a detachable locking pin 22. The valve plate 23 is located in the cold air channel 20. The cylindrical locating pin 24 and the valve plate 23 are integrally formed. The cylindrical locating pin 24 is located in one of the first ventilation holes 21. The valve plate 23 can rotate around the cylindrical locating pin 24. The detachable locking pin 22 is provided with at least one detachable locking pin that is not located in the first ventilation hole 21 and can be inserted into the first ventilation hole 21 in the width direction or the length direction of the cold air channel 20 to lock the valve plate 23. The present invention utilizes the structure of the first ventilation hole 21, integrates the valve plate 23 with the cylindrical positioning pin 24, and places the cylindrical positioning pin 24 in the first ventilation hole 21, so that the valve plate 23 can rotate around the first ventilation hole 21. When the valve plate 23 needs to be opened, the cylindrical positioning pin 24 can be manually rotated. Of course, a groove or handle for convenient rotation can be integrated on the cylindrical positioning pin 24, and it can be rotated using auxiliary tools such as a screwdriver. After it is in place, the detachable locking pin 22 is inserted into the first ventilation holes 21 arranged side by side along the length direction of the cold air channel 20, and the valve plate 23 is locked. In the same way, when the valve plate 23 needs to be closed, the valve plate 23 is rotated, and then the detachable locking pin 22 is inserted into the first ventilation holes 21 arranged along the width direction of the cold air channel 20, so that the valve plate 23 can be locked to achieve the closure of the cold air channel 20.

[0037] As for the hot air channel, since the flow direction of the hot air channel is to flow to the unarranged area, it is impossible to close the hot air channel by closing the valve. Therefore, the present invention provides a closing method suitable for such occasions. The bottom of the heat dissipation channel 40 is provided with a plurality of second ventilation holes 46 for collecting hot air, and the heat flow is also collected in the form of ventilation holes. A blocking component is provided at the bottom of the heat dissipation channel 40, which is used to block the second ventilation holes 46 of the heat dissipation channel 40 when the SVG device 30 is not installed under the heat dissipation channel 40. Specifically, the blocking component includes a film winding 42, and a guide rail 45 is provided along the length direction or width direction of the heat dissipation channel 40, and a slider component 44 is provided on the guide rail 45. The slider component 44 is connected to the film on the film winding 42, and is used to pull the film to slide along the guide rail 45, thereby covering the second ventilation holes 46. In this embodiment, the film can be dragged to cover the heat dissipation channel 40 in the unused area by manually pulling the slider component 44 to move along the guide track 45. Since the heat dissipation channel 40 collects hot air by exhausting air, the pressure in the hot air channel is lower than the external pressure, so that the film covering the surface of the heat dissipation channel 40 can be firmly adsorbed. In this way, in the area where no equipment is configured, the second ventilation hole 46 of this area can be kept closed by blocking with the film, and the heat dissipation channel 40 in this area can guide the hot air without affecting the flow of hot air inside the heat dissipation channel 40.

[0038] In order to improve the adsorption effect of the film and to facilitate storage of the film when the second heat dissipation hole needs to be opened later, a locking pin 47 is provided on the slider. The locking pin 47 can pass through the slider component 44 and be inserted into the second ventilation hole 46, thereby locking the slider component 44. A torsion spring is provided on the rotating shaft of the film winding 42, which can retract the film when the locking pin 47 releases the slider component 44. It is simple and quick.

Claims

1. A cooling system for SVG equipment, comprising a machine room and SVG equipment arranged in the machine room, characterized in that: The cooling system comprises an air cooling unit, a cold air channel and a heat dissipation channel, wherein the air cooling unit is arranged outside the machine room, the cold air channel is pre-buried below the ground plane of the back channel between the SVG devices, and a plurality of first ventilation holes are arranged on the upper surface of the cold air channel for introducing cold air into the area between the back channels; the heat dissipation channel is arranged on the top of the SVG device and above the back channel for collecting hot air generated by the SVG device; the cold air channel is connected to the air outlet of the air cooling unit, and the heat dissipation channel is connected to the air inlet of the air cooling unit; Wherein, the arrangement width of the first ventilation holes of the cold air channel is one third to one half of the width of the back channel.

2. The cooling system of the SVG device according to claim 1, characterized in that: At least one group of cold air blowers is arranged in the cold air channel along the length direction.

3. The cooling system of the SVG device according to claim 1, characterized in that: At least one group of valve components is arranged in the cold air channel along the length direction.

4. The cooling system of the SVG device according to claim 3, characterized in that: The valve assembly includes a valve plate, a cylindrical locating pin and a detachable locking pin. The valve plate is located in the cold air channel. The cylindrical locating pin and the valve plate are integrally formed. The cylindrical locating pin is located in one of the first ventilation holes. The valve plate can rotate around the cylindrical locating pin. The detachable locking pin is provided with at least one detachable locking pin that is not located in the first ventilation hole and can be inserted into the first ventilation hole along the width direction or length direction of the cold air channel to lock the valve plate.

5. The cooling system of SVG equipment according to claim 1, characterized in that: The heat dissipation channel includes a heat collecting cover part and a connecting channel part. There are at least two heat collecting cover parts, and the two heat collecting cover parts are connected through the connecting channel part. A heat dissipation fan is arranged in the connecting channel part. The width of the connecting channel part is one quarter to one third of the width of the heat collecting cover part.

6. The cooling system of SVG equipment according to claim 5, characterized in that: A plurality of second ventilation holes for collecting hot air are arranged at the bottom of the heat dissipation channel.

7. The cooling system of SVG equipment according to claim 6, characterized in that: A blocking component is disposed at the bottom of the heat dissipation channel, and is used to block the second ventilation hole of the heat dissipation channel when no SVG device is installed below the heat dissipation channel.

8. The cooling system of SVG equipment according to claim 7, characterized in that: The blocking component includes a film winding, and a guide track is arranged along the length direction or the width direction of the heat dissipation channel. A slider component is arranged on the guide track. The slider component is connected to the film on the film winding and is used to pull the film to slide along the guide track to cover the second ventilation hole.

9. The cooling system of SVG equipment according to claim 8, characterized in that: The slider is provided with a locking pin, which can pass through the slider component and then be inserted into the second ventilation hole, thereby locking the slider component. The rotating shaft of the film winding is provided with a torsion spring, which can retract the film when the locking pin releases the lock on the slider component.

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