Transformer chamber and box-type substation
The transformer room design addresses poor heat dissipation in dry-type transformers by using an annular channel and inner guide plate with top and side fans, enhancing efficiency and reducing energy consumption and costs.
Patent Information
- Application Number
- CN202323565898.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-26
AI Technical Summary
Existing dry-type transformers in box-type substations face poor heat dissipation due to direct airflow from centrifugal fans, leading to high energy consumption and costs, particularly with large-capacity wind turbines, causing frequent shutdowns and economic losses.
A transformer room design featuring an annular heat dissipation channel beneath the transformer, an inner guide plate directing airflow to the outer area, and a combination of top and side fans for efficient heat dissipation, utilizing natural wind and reducing fan power requirements.
The design achieves effective heat dissipation for both inside and outside the transformer, saving costs and energy consumption by omitting annular ducts and reducing fan power, while ensuring rainproof protection and extended component life.
Smart Images
Figure CN222214944U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ventilation of transformer substations, in particular to a transformer room and a box-type transformer substation. Background Art
[0002] Box-type substations are widely used in renewable energy power generation projects due to their low radiation and environmental friendliness. Box-type substations mainly rely on the exchange of air inside and outside to take away the heat generated inside the box for cooling, usually relying on the cooling fan of the box-type substation for heat dissipation. The renewable energy power generation market is also developing rapidly, and the installed capacity of wind turbines in wind power generation projects is also increasing. Among them, there are more and more wind turbines of 5MW or even larger, and the corresponding box-type substation capacity is also increasing.
[0003] However, this type of large-capacity box transformer has also exposed some problems during its long-term use. For example, the heat dissipation problem of dry-type transformers is particularly special. The traditional way to dissipate heat for dry-type transformers is to install a centrifugal fan that blows directly at the transformer at the bottom of the box, and an exhaust fan is installed on the side wall of the box. However, the centrifugal fan will blow directly on the channel steel or iron core at the bottom of the transformer when blowing air, resulting in poor heat dissipation of the transformer body. Every year, there are countless problems such as box transformer shutdown caused by high temperature weather, which causes huge economic losses to users, thereby reducing the competitiveness of the product.
[0004] Therefore, in order to solve the above-mentioned problem that the centrifugal fan directly blows the transformer and has poor heat dissipation, the existing authorization announcement number CN216849562U discloses a dry-type transformer that is provided with an annular air duct at the bottom of the outer side of the high-voltage winding and the bottom of the gap between the high and low voltage windings, and an air blowing nozzle is provided on the annular air duct to accurately blow air to dissipate heat from the dry-type transformer, and an exhaust fan is provided at the top of the transformer box, and an air inlet is provided on the side wall of the transformer box to quickly discharge hot air, further improving the heat dissipation efficiency. However, the dry-type transformer is provided with two sets of annular air ducts at the bottom of the coil winding to achieve heat dissipation inside and outside the dry-type transformer, and the bottom fan required is relatively large in power and cost. Utility Model Content
[0005] The utility model aims to provide a transformer chamber, which is used to solve the problem that the existing dry-type transformer has two sets of annular air ducts at the bottom of the coil winding to achieve heat dissipation inside and outside the dry-type transformer, and the bottom fan required has large power and high cost.
[0006] The transformer room of the utility model adopts the following technical scheme: a transformer room, including a box body, a transformer mounting structure is provided in the box body, an annular heat dissipation channel is also provided in the box body for being arranged below the transformer to blow air toward the gap between the high and low voltage windings of the transformer, an air inlet is provided at the lower position of the side wall of the box body, a heat dissipation fan for exhausting air outward is provided at the upper position of the box body, an inner guide plate cantilevered toward the inside of the box body is provided on the inner side wall of the box body, and the inner guide plate is located between the heat dissipation fan and the air inlet so that the airflow flowing from the air inlet to the negative pressure zone at the top of the box body flows through the outer area of the transformer.
[0007] Furthermore, the inner guide plate is used to be arranged at a position close to but not higher than the top of the high and low voltage windings of the transformer.
[0008] Furthermore, the top cover of the box body includes an upper top cover and a lower top cover, the upper top cover is a rainproof top cover shielding the top of the box body, the heat dissipation fan includes a top fan arranged on the lower top cover at a position corresponding to the position above the transformer mounting structure, and a side exhaust port is provided between the two top covers for discharging the high-temperature gas sucked into the two top covers by the top fan to the side.
[0009] Furthermore, a side wall exhaust port is provided on the side wall of the box body, and the heat dissipation fan also includes a side fan arranged at the side wall exhaust port.
[0010] Furthermore, the side fan is located near the top of the side wall of the box body and below the lower top cover.
[0011] Furthermore, the width of the upper top cover on the side of the side fan is greater than that of the lower top cover, and a downward flange is provided on the upper top cover, and the side air outlet between the two top covers is located between the flange and the lower top cover.
[0012] Furthermore, the side wall of the box body is provided with a downwardly inclined guide inclined plate near the side air outlet for guiding the hot air from the side air outlet to an area away from the side wall of the box body.
[0013] The transformer chamber of the utility model improves the existing dry-type transformer. The beneficial effects of the transformer chamber of the utility model are as follows: an annular heat dissipation channel for blowing air toward the gap between the high and low voltage windings of the transformer is provided under the transformer to accurately blow air to dissipate heat inside the transformer body, a heat dissipation fan located above the box body is used to quickly absorb the heat discharged from the inside of the transformer body, and an inner guide plate cantilevered toward the inside of the box body is provided on the inner side wall of the box body, and the inner guide plate is located between the heat dissipation fan and the air inlet, which is sucked out from the bottom of the side wall of the box body. The cold air entering from the air inlet at the position will not flow upward directly from the side wall after entering the box, but will be guided by the internal guide plate to the outer area of the transformer, and then enter the negative pressure area on the top of the box and be sucked by the cooling fan, thereby realizing the heat dissipation of the outside of the transformer. In this way, the cold air from the air inlet on the side wall of the box is accurately guided through the outside of the transformer. Compared with the existing technology, the annular heat dissipation channel for the outside of the high-voltage winding at the bottom can be omitted, and natural wind can be reasonably used to dissipate the heat of the outside of the transformer, saving costs, reducing the operating power of the bottom fan, and reducing the energy consumption of the fan.
[0014] The utility model aims to provide a box-type substation, which is used to solve the problem that the power of the bottom fan required for the heat dissipation inside and outside the dry-type transformer of the existing box-type substation is large and the cost is high because two sets of annular air ducts are arranged at the bottom of the coil winding to realize the heat dissipation inside and outside the dry-type transformer.
[0015] The box-type substation of the utility model adopts the following technical scheme: a box-type substation, including a high-voltage room, a low-voltage room and a transformer room, the transformer room including a box body, a transformer mounting structure inside the box body, and an annular heat dissipation channel for blowing air toward the gap between the high and low voltage windings of the transformer arranged below the transformer is also arranged inside the box body, an air inlet is arranged at the lower position of the side wall of the box body, a heat dissipation fan for exhausting air outward is arranged at the upper position of the box body, an inner guide plate cantilevered toward the inside of the box body is arranged on the inner side wall of the box body, and the inner guide plate is located between the heat dissipation fan and the air inlet so that the airflow flowing from the air inlet to the negative pressure zone at the top of the box body flows through the outer area of the transformer.
[0016] Furthermore, the inner guide plate is used to be arranged at a position close to but not higher than the top of the high and low voltage windings of the transformer.
[0017] Furthermore, the top cover of the box body includes an upper top cover and a lower top cover, the upper top cover is a rainproof top cover shielding the top of the box body, the heat dissipation fan includes a top fan arranged on the lower top cover at a position corresponding to the position above the transformer mounting structure, and a side exhaust port is provided between the two top covers for discharging the high-temperature gas sucked into the two top covers by the top fan to the side.
[0018] Furthermore, a side wall exhaust port is provided on the side wall of the box body, and the heat dissipation fan also includes a side fan arranged at the side wall exhaust port.
[0019] Furthermore, the side fan is located near the top of the side wall of the box body and below the lower top cover.
[0020] Furthermore, the width of the upper top cover on the side of the side fan is greater than that of the lower top cover, and a downward flange is provided on the upper top cover, and the side air outlet between the two top covers is located between the flange and the lower top cover.
[0021] Furthermore, the side wall of the box body is provided with a downwardly inclined guide inclined plate near the side air outlet for guiding the hot air from the side air outlet to an area away from the side wall of the box body.
[0022] The box-type substation of the utility model improves the existing box-type substation. The beneficial effects of the box-type substation of the utility model are as follows: an annular heat dissipation channel for blowing air toward the gap between the high and low voltage windings of the transformer is provided under the transformer to accurately blow air to dissipate heat inside the transformer body, and a heat dissipation fan located above the box body quickly absorbs the heat discharged from the transformer body, and an inner guide plate extending toward the inside of the box is provided on the inner side wall of the box body, and the inner guide plate is located between the heat dissipation fan and the air inlet, which is blown from the lower side wall of the box body to dissipate the heat from the lower side wall of the box body. The cold air entering from the air inlet at the side position will not flow upward directly from the side wall after entering the box, but will be guided by the internal guide plate to the outer area of the transformer, and then enter the negative pressure area on the top of the box and be sucked by the heat dissipation fan, thereby realizing the heat dissipation of the outside of the transformer. In this way, the cold air from the air inlet on the side wall of the box is accurately guided through the outside of the transformer. Compared with the existing technology, the annular heat dissipation channel for the outside of the high-voltage winding at the bottom can be omitted, and natural wind can be reasonably used to dissipate the heat of the outside of the transformer, saving costs, reducing the operating power of the bottom fan, and reducing the energy consumption of the fan. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is an overall schematic diagram of an embodiment of a box-type substation of the utility model;
[0024] Figure 2 It is a structural schematic diagram of an embodiment of a transformer chamber of the utility model;
[0025] Figure 3 for Figure 2 Schematic diagram of the transformer structure;
[0026] Figure 4 for Figure 2 Schematic diagram of wind direction.
[0027] In the figure: 1. upper cover; 2. top fan; 3. side fan; 4. inner guide plate; 5. shutter; 6. centrifugal fan; 7. square insulated air duct; 8. low-voltage winding; 9. iron core; 10. high-voltage winding; 11. lower cover; 12. side exhaust port; 13. box; 14. guide ramp; 15. cylindrical air duct; 16. annular insulated air duct; 17. insulated air duct support. DETAILED DESCRIPTION
[0028] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.
[0029] First, the technical solution of the utility model is generally described as follows:
[0030] The box-type substation includes a high-voltage room, a low-voltage room and a transformer room. Various electrical components are arranged in each room, so it is necessary to dissipate heat inside each room. Generally, a plurality of heat dissipation fans are installed on the box-type substation, which mainly rely on the internal and external exchange of air to take away the heat generated inside the box-type substation and cool it down. Based on the rapid development of the new energy power generation market, the installed capacity of wind turbines in wind power generation projects is getting larger and larger, and the corresponding box-type substation capacity is also getting larger and larger. This large-capacity box-type substation has also exposed some problems during long-term use. For example, the heat dissipation problem of the transformer in the transformer room is particularly special. This embodiment is conceived with the heat dissipation of dry-type transformers as the background.
[0031] The traditional heat dissipation method is to set a centrifugal fan that blows directly at the dry-type transformer at the bottom of the transformer chamber, and an axial fan is set on the upper side wall of the box. However, the centrifugal fan will blow directly on the bottom channel steel or iron core of the dry-type transformer when blowing air, resulting in poor heat dissipation of the dry-type transformer body. Therefore, the existing dry-type transformer with authorization announcement number CN216849562U is provided with an annular air duct at the bottom of the outer side of the high-voltage winding and the bottom of the gap between the high and low voltage windings, and an air nozzle is set on the annular air duct to accurately blow air to the dry-type transformer to dissipate heat, and an exhaust fan is set at the top of the transformer box. The side wall of the transformer box is provided with an air inlet to quickly discharge hot air, further improving the heat dissipation efficiency. However, the dry-type transformer is provided with two sets of annular air ducts at the bottom of the coil winding to achieve heat dissipation inside and outside the dry-type transformer. The bottom fan required is large in power and high in cost.
[0032] Therefore, based on the problems existing in the above-mentioned dry-type transformers, we considered how to reduce the energy consumption of the bottom fan to save costs while achieving good heat dissipation effect. The transformer chamber of the utility model includes a box body, and a transformer mounting structure is provided in the box body. The heat dissipation between the high and low voltage windings inside the transformer is the same as the prior art. An annular heat dissipation channel is arranged below the transformer in the box body, and the air outlet of the annular heat dissipation channel blows air toward the gap between the high and low voltage windings of the transformer to ensure accurate blowing and heat dissipation inside the transformer body. An air inlet is arranged at the lower position of the side wall of the box body, and a heat dissipation fan for exhausting air outward is arranged at the upper position of the box body to dissipate heat from the transformer body. The heat discharged from the body is quickly absorbed, so that a negative pressure area is formed above the box. The key point of the utility model is that an inner guide plate cantilevered toward the inside of the box is provided on the inner side wall of the box. The inner guide plate guides the cold air entering from the air inlet to the middle part after entering the box. The inner guide plate is located between the heat dissipation fan and the air inlet, so that the airflow flowing from the air inlet to the negative pressure area on the top of the box flows through the outer area of the transformer to achieve heat dissipation on the outside of the transformer. Compared with the prior art, the annular heat dissipation channel for the outside of the high-voltage winding at the bottom can be omitted, the natural wind can be reasonably used, the cost can be saved, the operating power of the bottom fan can be reduced, and the energy consumption of the fan can be reduced.
[0033] Specific embodiment of the box-type substation of the utility model:
[0034] The overall structural diagram of the box-type substation of the utility model is as follows Figure 1 As shown, a box-type substation includes a high-voltage room, a low-voltage room and a transformer room. The utility model improves the existing dry-type transformer room. Specifically, the transformer room includes a box body 13, and the box body 13 has a transformer mounting structure. A transformer is mounted on the transformer mounting structure. The transformer includes parallel arrangements as shown in FIG. Figure 3 The three-phase windings A, B, and C shown, specifically, each phase winding includes a high-voltage winding 10 and a low-voltage winding 8. The high-voltage winding 10 is sleeved on the outer periphery of the low-voltage winding 8 and has a certain gap between the low-voltage winding 8. An annular heat dissipation channel is arranged under the transformer in the box 13. The air outlet of the annular heat dissipation channel blows toward the gap between the high and low voltage windings of the transformer, so as to accurately dissipate the heat of the transformer body to solve the problem of poor heat dissipation of the transformer body caused by direct blowing of the existing heat dissipation fan.
[0035] By arranging a heat dissipation fan at the upper position of the box body 13, it can be ensured that the hot air discharged from the annular heat dissipation channel is accurately sucked and dissipated, so that a negative pressure area is formed above the box body 13. Generally, in order to achieve better heat dissipation, an air inlet is generally arranged at the bottom of the side wall of the box body 13. In this embodiment, the air inlet is specifically a shutter 5, which can transport part of the external cold air into the box body 13 to achieve effective utilization of natural resources. However, the heat dissipation fans at the upper position of the box body 13 are prone to suck the cold air entering from the shutter 5 upward from the side wall, resulting in resource waste. Therefore, the key point of this embodiment is that an inner guide plate 4 is arranged on the inner side wall of the box body 13, which is cantilevered toward the inside of the box body 13. The inner guide plate 4 is located between the heat dissipation fan and the shutter 5. The inner guide plate 4 guides the cold air entering through the shutter 5 to the outer area of the transformer in the middle of the box body 13, and then enters the negative pressure area at the top of the box body 13 and is sucked by the heat dissipation fan, thereby achieving heat dissipation on the outside of the transformer.
[0036] When considering that the inner guide plate 4 can achieve a better diversion effect if it is set, the cold air entering the louver 5 is fully utilized and flows to the outside of the transformer. Preferably, the inner guide plate 4 is set at a position close to but not higher than the top of the high and low voltage windings of the transformer, so that the diversion path of the cold air entering the louver 5 passes through the outer area of the transformer, achieving a maximized heat dissipation effect, and separating the hot air on the top of the high and low voltage windings from the cold air entering the louver 5. Of course, in other embodiments, the inner guide plate 4 is set flush with the top of the high and low voltage windings of the transformer or slightly higher than the top of the high and low voltage windings of the transformer to achieve the diversion effect.
[0037] Since the existing heat dissipation fan on the top of the transformer box is exposed to the outside, it may be damaged if used for a long time. Therefore, in order to achieve good heat dissipation effect while ensuring that the top of the box can be rainproof, it is preferred that Figure 2 As shown, the top cover of the box body 13 includes an upper top cover 1 and a lower top cover 11. The upper top cover 1 is a rainproof top cover shielding the top of the box body 13. In this embodiment, the upper top cover 1 is a V-shaped structure with an opening facing downward, in other words, a ridge-shaped structure, and rainwater flows out to both sides to achieve a better rainproof effect. Of course, in other embodiments, the upper top cover 1 can also be a flat top cover to ensure the rainproof effect. The heat dissipation fan includes a top fan 2 arranged on the lower top cover 11 above the transformer mounting structure. The top fan 2 quickly absorbs the heat discharged from the inside of the transformer body. Since the top fan 2 is shielded by the upper top cover 1, a side exhaust port 12 is also provided between the two top covers for the high-temperature gas sucked into the two top covers by the top fan 2 to be discharged along the sides, which not only makes the top of the box body 13 rainproof, but also ensures good heat dissipation of the transformer body, improves the service life of the transformer room and ensures the safety of internal components.
[0038] Although the top fan 2 has sucked away the heat discharged from the transformer, the hot air will inevitably diffuse to the top sides during the upward discharge process. Therefore, in order to achieve a better heat dissipation effect, preferably, a side wall exhaust port is provided on the side wall of the box body 13, and the heat dissipation fan also includes a side fan 3 arranged at the side wall exhaust port, so that the hot air remaining diffused to the side by the top fan 2 can be sucked away by the side fan 3. The top fan 2 and the side fan 3 are used together to suck hot air in a wider range, so that the heat dissipation effect is better. In this embodiment, the transformer is arranged in the middle of the box body 13, and the side fans 3 are arranged on both side walls of the box body 13. The side fans 3 are axial flow fans to ensure a good heat dissipation effect. Of course, in other embodiments, when the dry-type transformer is located on the side, the side fan 3 can be arranged only near the transformer side.
[0039] In order to ensure that the suction range of the side fan 3 is more effective, preferably, the side fan 3 is arranged near the top of the side wall of the box body 13 and is below the lower top cover 11. Since hot air generally flows upward, the side fan 3 is arranged near the top of the side wall of the box body 13 to effectively suck the hot air diffused to both sides to the maximum extent, ensuring that the heat dissipation dead corners can also be sucked. Of course, in other embodiments, when there are multiple top fans 2 and they are arranged near the side wall, the side fan 3 can also be arranged in the middle and upper part of the side wall of the box body 13, higher than the inner guide plate 4.
[0040] In order to ensure a better rainproof effect, preferably, the width of the upper roof cover 1 on the side of the side fan 3 is greater than that of the lower roof cover 11, and a downward flange is provided on the upper roof cover 1, so that the upper rainproof roof cover can cover the structure below, and the side exhaust port 12 between the two roof covers is located between the flange and the lower roof cover 11, so that the air outlet of the side exhaust port 12 faces downward, and rainwater is not easy to enter, ensuring a better rainproof effect. Of course, in other embodiments, the width of the upper roof cover 1 and the lower roof cover 11 are the same, and the gap between the upper roof cover 1 and the lower roof cover 11 constitutes the side exhaust port 12.
[0041] Based on the above-mentioned implementation mode in which the side air outlet 12 is arranged downward, the hot air sucked out by the top fan 2 will flow downward along the side wall. In order to prevent the hot air from possibly flowing back into the box body 13 through the louver 5, in this embodiment, preferably, the side wall of the box body 13 is provided with a downwardly inclined guide ramp 14 near the side air outlet 12 for guiding the hot air from the side air outlet 12 to an area away from the side wall of the box body 13. The downwardly inclined guide ramp 14 guides the air from the side air outlet 12 to a position away from the side wall of the box body 13 along the guide ramp 14, and the hot air will not directly flow downward through the louver 5 and then flow back into the box body 13. Specifically, a steel plate mesh is provided inside the guide ramp 14, which can meet the heat dissipation requirements and effectively prevent foreign matter from entering the interior of the transformer room. Of course, in other embodiments, a horizontal outer guide plate may be provided below the side fan 3, or when the exhaust direction of the side exhaust port 12 is toward the side of the box body 13, the guide inclined plate 14 may not be provided.
[0042] In the heat exchange process, heat generally has the characteristic of being transferred upward, so the air inlet is generally set at the lower part and the air outlet is set at the upper part. Specifically, in this embodiment, a blower-type centrifugal fan 6 is provided on the right side of the A and B phases and the B and C phases of the dry-type transformer. The centrifugal fan 6 is fixed to the bottom channel steel of the dry-type transformer through a mounting bracket. The air inlet of the centrifugal fan 6 is set as a cylindrical air duct 15. The cylindrical air duct 15 can be fixedly connected to the bottom plate of the transformer room, and the cool air outside the transformer room can be directly sucked in through the centrifugal fan 6.
[0043] In this embodiment, a square insulating air duct 7 is provided at the air outlet of the centrifugal fan 6, and the square insulating air duct 7 can extend the air outlet to the iron core 9 of the transformer. A ring-shaped insulating air duct 16 is provided at the end of the square insulating air duct 7. The ring-shaped insulating air duct 16 constitutes a reversing heat dissipation channel. A plurality of circular holes are provided on the ring-shaped insulating air duct 16, and each circular hole corresponds to the gap between the high and low voltage windings of the transformer. The ring-shaped insulating air duct 16 can be fixed on the clamp of the iron core 9 through the insulating air duct support 17.
[0044] In this embodiment, the heat dissipation fans inside the transformer room can be controlled by the intelligent controller. When the transformer is operating normally, it can be divided into multiple batches of temperature, and each fan is started and closed in a step-by-step manner to achieve the purpose of intelligent control, which can effectively increase the service life of the fan. A steel plate mesh is set at the bottom of the transformer room to allow low-temperature air to enter the interior of the transformer room, and at the same time, it can prevent small animals from entering the electrified rooms in the on-site working environment.
[0045] During the heat dissipation process of the box-type substation of the utility model, Figure 4As shown, first start the centrifugal fan 6 at the bottom of the box 13, and the centrifugal fan 6 draws the external cool air through the cylindrical air duct 15 to the square insulating air duct 7 and then into the annular insulating air duct 16. The circular small holes on the annular insulating air duct 16 accurately correspond to the gap between the high and low voltage windings of the transformer to blow air, and then pass through the top of the high and low voltage windings and be sucked between the two top covers by the top fan 2. Part of the hot air on the top of the high and low voltage windings flows to both sides and is sucked to the outside of the box 13 by the side fans 3. The shutters 5 below the side walls of the box 13 bring the external cold air into the box 13. Under the action of the inner guide plate 4, the cold air entering the box shutters 5 is guided to the outer area of the transformer to ensure the accurate heat dissipation effect of the outer area of the transformer. Finally, after passing through the outer area of the transformer, it is sucked away by the upper heat dissipation fan, and the guide inclined plate 14 on the top of the box 13 guides the side exhaust port to the area away from the side wall of the box 13, finally achieving efficient heat dissipation effect inside the box 13.
[0046] Through the above description of the specific embodiment of the box-type substation of the utility model, it can be seen that the box-type substation of the utility model accurately blows air to dissipate heat inside the transformer body through the annular heat dissipation channel, and an inner guide plate is arranged on the inner side wall of the box body, which is cantilevered toward the inside of the box body. The inner guide plate is located between the heat dissipation fan and the air inlet. The cold air entering from the air inlet at the lower position of the side wall of the box body will not flow upward directly from the side wall after entering the box body, but will be guided to the outer area of the transformer by the inner guide plate, thereby realizing the heat dissipation of the outer side of the transformer, and rationally using natural wind to dissipate heat on the outer side of the transformer, saving costs, reducing the operating power of the bottom fan, and reducing the energy consumption of the fan. Through the combination of the top fan and the side fan for suction, a better heat dissipation effect is achieved, and the top cover is set as an upper and lower top cover, the upper top cover is rainproof, and the side exhaust port between the upper and lower top covers discharges the high-temperature gas sucked into the two top covers by the top fan, while ensuring good heat dissipation of the transformer body, it is rainproof on the outside, and the service life of the transformer room is improved and the safety of the internal components is guaranteed.
[0047] The embodiment of the transformer room of the utility model is the same as the embodiment of the transformer room in the above-mentioned box-type substation, and therefore will not be described again.
[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.
Claims
1. A transformer room, comprising a box body, a transformer mounting structure in the box body, an annular heat dissipation channel for blowing air toward the gap between the high and low voltage windings of the transformer under the transformer, an air inlet is provided at the lower position of the side wall of the box body, and is characterized in that: A cooling fan for exhausting air outward is provided at the top of the box, and an inner guide plate cantilevered toward the inside of the box is provided on the inner side wall of the box. The inner guide plate is located between the cooling fan and the air inlet so that the airflow flowing from the air inlet to the negative pressure area at the top of the box flows through the outer area of the transformer.
2. The transformer chamber according to claim 1, characterized in that: The inner guide plate is used to be arranged at a position close to but not higher than the top of the high and low voltage windings of the transformer.
3. The transformer chamber according to claim 1 or 2, characterized in that: The top cover of the box body includes an upper top cover and a lower top cover, the upper top cover is a rainproof top cover shielding the top of the box body, the heat dissipation fan includes a top fan arranged on the lower top cover at a position corresponding to the position above the transformer installation structure, and a side exhaust port is provided between the two top covers for the high-temperature gas sucked into the two top covers by the top fan to be discharged sideways.
4. The transformer chamber according to claim 3, characterized in that: The side wall of the box body is provided with a side wall exhaust port, and the heat dissipation fan also includes a side fan arranged at the side wall exhaust port.
5. The transformer chamber according to claim 4, characterized in that: The side fans are located near the top of the side walls of the box body and below the lower top cover.
6. The transformer chamber according to claim 3, characterized in that: The width of the upper top cover on the side of the side fan is greater than that of the lower top cover. The upper top cover is provided with a downward flange, and the side air outlet between the two top covers is located between the flange and the lower top cover.
7. The transformer chamber according to claim 6, characterized in that: The side wall of the box body is provided with a downwardly inclined guide inclined plate near the side air outlet for guiding the hot air from the side air outlet to an area away from the side wall of the box body.
8. A box-type substation, comprising a high voltage room, a low voltage room and a transformer room, characterized in that: The transformer room is a transformer room as described in any one of claims 1 to 7.