CN209929798U - Radiator for gas insulated switchgear - Google Patents
Radiator for gas insulated switchgear Download PDFInfo
- Publication number
- CN209929798U CN209929798U CN201920860544.3U CN201920860544U CN209929798U CN 209929798 U CN209929798 U CN 209929798U CN 201920860544 U CN201920860544 U CN 201920860544U CN 209929798 U CN209929798 U CN 209929798U
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- Prior art keywords
- heat exchange
- exchange tube
- fan blade
- sleeved
- insulated switchgear
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Abstract
The utility model relates to a heat exchanger, especially a radiator for gas insulated switchgear, in order to solve the problem that the heat conduction effect of the existing stainless steel box is not ideal, and the transmission torque of the disc type structure of the inner and outer torque coupling units is smaller, the naked fan blade also causes adverse effect to the electric field arrangement in the box, a radiator for gas insulated switchgear is provided, the heat exchange tube is installed on two through holes which coaxially run through on the box, the outer fan blade is arranged in the heat exchange tube, the outer ring of the outer fan blade is sleeved with a magnetic outer magnetic rotor, the outer clearance sleeve of the heat exchange tube is sleeved with an inner magnetic rotor which mutually couples and rotates with the outer magnetic rotor, the outer ring of the inner magnetic rotor is sleeved with an inner fan blade, the outer fan blade is fixedly connected with the output shaft of the motor, the motor is arranged on the mounting plate and is coaxially arranged with the heat exchange tube, the outer side of the heat exchange tube, the outside at interior fan blade is established to the kuppe cover, the utility model has the characteristics of the security is high, the radiating effect is good and the maintenance cycle is long.
Description
Technical Field
The utility model relates to a heat exchanger, especially a radiator for gas insulated switchgear.
Background
The gas insulated switchgear is a medium voltage power transmission and distribution switchgear in which a primary main conductive circuit is installed in a sealed stainless steel box body, and a proper amount of insulating gas is filled in the box body as an insulating medium. Because the box body is closed, the conduction path is few, the radiation and the convection effect in the gas are weak, meanwhile, the distribution of the main conductive loop in the box body is long and uneven, and uneven heating of the main conductive loop under the action of current is difficult to control. In the prior art, sulfur hexafluoride is still generally used as an insulating gas, and due to the strong greenhouse effect of the sulfur hexafluoride, the sulfur hexafluoride is gradually replaced by environment-friendly gases such as nitrogen, dry air and the like, but the insulation and heat dissipation performance of the environment-friendly gases are far from the sulfur hexafluoride. It is a common practice to add a heat sink on the heating section of the main conductive loop or the outer wall of the box, but the effect is weak under the isolation effect of the gas in the box, such as CN102447228, which is named as: a high-voltage large-current drying compressed air insulated metal enclosed switchgear can enhance the convection heat exchange effect of insulating gas if a fan is arranged in a closed box body, and is named as CN 107069477: a radiator fan for a large-current gas-insulated switch cabinet is provided, but the heat conduction effect of a stainless steel box body is not ideal, the disc type structures of an inner torque coupling unit and an outer torque coupling unit have smaller transmission torque, and the naked fan blade also causes adverse effect on the arrangement of an electric field in the box body.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: in order to solve the problems that the heat conduction effect of the existing stainless steel box is not ideal, the disc type structures of the inner torque coupling unit and the outer torque coupling unit have smaller transmission torque, and the naked fan blade also causes adverse effect on the arrangement of an electric field in the box body, the radiator for the gas insulated switchgear is provided.
The utility model provides a technical scheme that its technical problem adopted is: a radiator for a gas insulated switchgear is provided with heat exchange tubes, the heat exchange tubes are arranged on two through holes which are coaxially penetrated on a box body, the tube walls of the heat exchange tubes positioned at the two sides inside and outside the box body are provided with fins, outer fan blades are arranged in the heat exchange tubes, magnetic outer magnetic rotors are sleeved on the outer rings of the outer fan blades, an inner magnetic rotor which is mutually coupled and rotated with the outer magnetic rotor is sleeved at the outer side gap of the heat exchange tube, an inner fan blade is sleeved on the outer ring of the inner magnetic rotor, the upper end and the lower end of the inner fan blade are provided with limiting parts, the limiting parts are arranged on the outer side tube wall of the heat exchange tube, the outer fan blade is fixedly connected with an output shaft of a motor, the motor is arranged on an installation plate, and with the coaxial setting of heat exchange tube, mounting panel and box fixed connection, and seted up the vent on the mounting panel, the outside of heat exchange tube still overlaps and is equipped with the kuppe, and the kuppe cover is established in the outside of interior fan blade.
In order to facilitate the disassembly and assembly, the air box is further provided with a mechanical sealing ring, the inner wall of the mechanical sealing ring is provided with an internal thread, the outer wall of the opening end of the heat exchange tube is provided with an external thread, and the internal thread and the external thread are matched with each other.
In order to ensure the sealing performance, at least one sealing ring is arranged between the mechanical sealing ring and the heat exchange tube.
In order to prevent the inner fan blade from falling off when rotating at a high speed, the limiting part comprises an upper part and a lower part, namely a thrust bearing for limiting the inner fan blade to move upwards when rotating and a retaining ring for limiting the inner fan blade to move downwards when rotating.
Similarly, in order to prevent the inner fan blade from falling off when the inner fan blade rotates at a high speed, the inner fan blade is a turbine fan blade, a sleeving ring is arranged in the middle of the inner fan blade, a boss is arranged in the sleeving ring, and the boss is arranged at the end part of the inner magnetic rotor when the inner fan blade is sleeved on the inner magnetic rotor.
In order to reduce the friction resistance and ensure the heat dissipation effect, the outer fan blade is positioned at the upper part of the heat exchange tube, the upper part of the heat exchange tube is a light tube, the rest part of the heat exchange tube is a lower part, and fins for heat exchange are arranged at the inner side and the outer side of the tube body at the lower part of the heat exchange tube.
In order to ensure the gas circulation, a gap exists between the upper end of the flow guide cover and the inner wall of the upper end of the box body, and a gap exists between the lower end of the flow guide cover and the inner wall of the lower end of the box body.
The beneficial effects of the utility model are that, the utility model discloses a radiator for gas insulated switchgear, it effectively reduces generating heat of the interior sealed main conductive loop of box through reinforcing the gas convection and the inside and outside heat transfer effect of box in the gas insulated switchgear seal box.
The radiator can be used for forcibly convecting the environmental-friendly gas in the box body of the high-capacity environmental-friendly gas-insulated switch cabinet through the fan, and especially, the aluminum profile radiators with the inner and outer fins are used for forming respective gas convection inside and outside the box body, so that the heat exchange efficiency of the radiator is effectively enhanced, and the aim of reducing the temperature rise of a main conductive circuit is fulfilled.
1. The motor drives the inner ring impeller to rotate and simultaneously drives the inner magnetic rotor which is tightly matched and fixed through the inner rotor ring to rotate, the inner magnetic rotor and the outer magnetic rotor are mutually magnetically coupled to transfer torque and are used for tightly and fixedly fixing the outer ring impeller on the outer magnetic rotor to synchronously rotate, the outer ring impeller forms annular gas convection in an air duct formed by welding the pressure equalizing air guide cylinder, the aluminum profile radiator and the box body, heat is transferred to the inner side fins through the outer side fins of the profile radiator, and the heat on the inner side fins is led out by the air flow formed by the inner ring impeller;
2. the convection heat dissipation of the gas formed inside and outside the box body is more effective, and the gas is superposed with the wall of the box body to dissipate, so that the temperature in the box body is more uniform;
3. the pressure equalizing air duct enables convection to be stronger in the box body, hot gas passing through the outer side fins of the aluminum profile radiator is conducted to the inner side fins and is directly taken away by air flow, and the bottleneck of heat transfer is avoided;
4. the cylindrical magnetic coupling assembly formed by the inner magnetic rotor and the outer magnetic rotor has large transmission torque, and the transmitted torque can be further amplified by increasing the axial length;
5. the voltage-sharing air duct can effectively control the electric field of the radiator;
6. the motor is arranged outside the touchable box body during operation, so that the safety is guaranteed, and meanwhile, the motor can be replaced at any time, and the maintenance-free requirement of installing the main conductive circuit within the service life of 20-30 years is met.
The utility model has the characteristics of the security is high, the radiating effect is good and the maintenance cycle is long.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a structural sectional view of the present invention.
Fig. 2 is a fan assembly drawing of the present invention.
Fig. 3 is an assembly view of the heat exchange tube of the present invention.
In the figure, the heat exchange tube 1, the box 2, the fin 3, the outer fan blade 4, the outer magnetic rotor 5, the inner magnetic rotor 6, the inner fan blade 7, the motor 8, the mounting plate 9, the ventilation opening 10, the flow guide cover 11, the mechanical sealing ring 12, the sealing ring 13, the thrust bearing 14 and the check ring 15 are arranged.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
The radiator for the gas insulated switchgear shown in figures 1 to 3 is provided with a heat exchange tube 1, the heat exchange tube 1 is an aluminum profile heat exchange tube, fins 3 for accelerating heat exchange are arranged inside and outside a tube body, two through holes are coaxially arranged on a box body 2 in a penetrating manner, a mechanical sealing ring 12 is arranged in each through hole, then the heat exchange tube 1 is arranged in each mechanical sealing ring 12 in a threaded manner, in order to ensure air tightness, two sealing rings 13 are sleeved at the threaded connection part, a mounting plate 9 is arranged on an opening at one end of the heat exchange tube 1, a plurality of ventilation openings 10 are arranged on the mounting plate 9, the mounting plate 9 is used for mounting a motor 8, an output shaft of the motor 8 extends into the heat exchange tube 1, an outer fan blade 4 is arranged on the output shaft, all the outer fan blades are named as outer fan blades 4 positioned outside the box body 2, in order to mount magnets on the outer fan blades 4, the, the outer magnetic rotor 5 is formed, in order to prevent the outer magnetic rotor 5 from scattering when rotating at high speed, a rotor ring 17 is sleeved on the outer magnetic rotor 5, the rotor ring 17 does not influence the mutual coupling rotation of the outer magnetic rotor 5 and the inner magnetic rotor 6, the rotor ring 17 simply does not influence the magnetic force transmission, the outer side of the heat exchange tube 1 and the outer fan blade 4 are positioned on the same horizontal position, the inner magnetic rotor 6 is sleeved, in order to realize the air mixing and cooling in the box body 2, the inner magnetic rotor 6 is glued and sleeved with an inner fan blade 7, the inner fan blade 7 and the inner magnetic rotor 6 synchronously rotate, in order to prevent the inner magnetic rotor 6 from moving upwards or downwards when rotating, a thrust bearing 14 is arranged on the upper part of the inner magnetic rotor 6, the thrust bearing 14 is commercially available, the inner ring of the thrust bearing 14 is fixedly connected with the outer wall of the heat exchange tube 1, the ball surface of the thrust bearing 14 is pressed on the inner magnetic rotor 6 or the inner fan blade 7, and a thrust bearing 14 can, considering the cost and the actual situation, it is enough to install one thrust bearing 14, in the figure, the inner fan 7 moves upwards due to the wind pressure generated after the inner fan 7 rotates, so the thrust bearing 14 is arranged on the inner fan 7, namely the inner magnetic rotor 6, if the inner fan 7 blows upwards, the wind pressure pushes the inner fan 7 to move downwards, the thrust bearing 14 is arranged below the inner fan 7, namely the inner magnetic rotor 6, when the inner fan 7 does not rotate, the inner fan 7 and the inner magnetic rotor 6 move downwards under the influence of gravity, a check ring 15 is sleeved under the inner fan 7, and thus the complete fan assembly is completed, the heat exchange tube 1 where the outer fan 4 and the inner fan 7 are located is a section of light pipe, in order to improve the effects of wind mixing and heat dissipation, a flow guide cover 11 is sleeved outside the heat exchange tube 1, the flow guide cover 11 is provided with a support frame 16, the support frame is seated on the fin 3 and fixedly connected with the fin 3, the air guide sleeve 11 can ensure that the air in the box body 2 is fully contacted with the fins 3 on the heat exchange tube 1, in order to reduce the vibration of the air guide sleeve 11, two support frames 16 are provided, one support frame is arranged at the upper end of each fin 3, the other support frame is attached to the lower end of each fin 3, and the support frames 16 cannot block the air from passing through.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. The utility model provides a radiator for gas insulated switchgear which characterized in that: the heat exchange tube is provided with a heat exchange tube (1), the heat exchange tube (1) is arranged on two through holes coaxially penetrating through a box body (2), fins (3) are arranged on the tube walls of the inner side and the outer side of the box body (2) of the heat exchange tube (1), outer fan blades (4) are arranged in the heat exchange tube (1), magnetic outer magnetic rotors (5) are sleeved on the outer rings of the outer fan blades (4), inner magnetic rotors (6) which are mutually coupled and rotate with the outer magnetic rotors (5) are sleeved on the outer gaps of the heat exchange tube (1), inner fan blades (7) are sleeved on the outer rings of the inner magnetic rotors (6), limiting parts are arranged at the upper end and the lower end of each inner fan blade (7), the limiting parts are arranged on the tube walls of the outer side of the heat exchange tube (1), the outer fan blades (4) are fixedly connected with output shafts of motors (8), the motors (8) are arranged on an installation plate (9) and are coaxially arranged with the heat exchange tube, and the mounting plate (9) is provided with a vent (10), the outer side of the heat exchange tube (1) is also sleeved with a flow guide cover (11), and the flow guide cover (11) is sleeved on the outer side of the inner fan blade (7).
2. The heat sink for a gas insulated switchgear according to claim 1, wherein: still be provided with mechanical seal ring (12) on box (2), the inner wall of mechanical seal ring (12) has the internal thread, has the external screw thread on the outer wall of heat exchange tube (1) open end, and internal thread and external screw thread mutually support the setting.
3. The heat sink for gas insulated switchgear according to claim 2, wherein: at least one sealing ring (13) is arranged between the mechanical sealing ring (12) and the heat exchange tube (1).
4. The heat sink for a gas insulated switchgear according to claim 1, wherein: the limiting part comprises an upper part and a lower part, and is respectively a thrust bearing (14) for limiting the inner fan blade (7) to move upwards when rotating and a retaining ring (15) for limiting the inner fan blade (7) to move downwards when rotating.
5. The heat sink for gas insulated switchgear according to claim 4, wherein: the inner fan blade (7) is a turbine fan blade, a sleeving ring is arranged in the middle of the inner fan blade (7), a boss (16) is arranged in the sleeving ring, and the boss (16) is arranged at the end part of the inner magnetic rotor (6) when the inner fan blade (7) is sleeved on the inner magnetic rotor (6).
6. The heat sink for a gas insulated switchgear according to claim 1, wherein: the outer fan sheet (4) is positioned at the upper part of the heat exchange tube (1), the upper part of the heat exchange tube (1) is a light tube, the rest part of the heat exchange tube is a lower part, and fins (3) for heat exchange are arranged on the inner side and the outer side of the tube body at the lower part of the heat exchange tube.
7. The heat sink for a gas insulated switchgear according to claim 1, wherein: a gap exists between the upper end of the air guide sleeve (11) and the inner wall of the upper end of the box body (2), and a gap exists between the lower end of the air guide sleeve (11) and the inner wall of the lower end of the box body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920860544.3U CN209929798U (en) | 2019-06-06 | 2019-06-06 | Radiator for gas insulated switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920860544.3U CN209929798U (en) | 2019-06-06 | 2019-06-06 | Radiator for gas insulated switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209929798U true CN209929798U (en) | 2020-01-10 |
Family
ID=69092784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920860544.3U Withdrawn - After Issue CN209929798U (en) | 2019-06-06 | 2019-06-06 | Radiator for gas insulated switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209929798U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459970A (en) * | 2019-06-06 | 2019-11-15 | 上海南华兰陵电气有限公司 | A kind of gas insulation switch cabinet radiator |
-
2019
- 2019-06-06 CN CN201920860544.3U patent/CN209929798U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459970A (en) * | 2019-06-06 | 2019-11-15 | 上海南华兰陵电气有限公司 | A kind of gas insulation switch cabinet radiator |
| CN110459970B (en) * | 2019-06-06 | 2023-06-09 | 上海南华兰陵电气有限公司 | Radiator for gas-insulated switchgear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200110 Effective date of abandoning: 20230609 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200110 Effective date of abandoning: 20230609 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |