CN214506251U - Bury box-type substation entirely - Google Patents
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- CN214506251U CN214506251U CN202022989523.7U CN202022989523U CN214506251U CN 214506251 U CN214506251 U CN 214506251U CN 202022989523 U CN202022989523 U CN 202022989523U CN 214506251 U CN214506251 U CN 214506251U
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Abstract
The utility model discloses a bury box-type substation entirely, the utility model discloses a box-separating structure of mutually independent transformer case and high-low pressure case is adopted to lay the transformer case in the basement, bury the high-low pressure case underground in burying the hole, adopt the cable pit to connect basement and bury the hole again, can guarantee that transformer, high-voltage switchgear and low-voltage distribution equipment can all normally operate and effectively dispel the heat under normal operating condition, or under adverse environmental conditions such as waterlogging or flooding, and can carry out flexible distributed arrangement according to city planning or old city transformation; and transformer case and high-low pressure case after the branch case, the volume diminishes, weight reduction, can be convenient for transport, also can be convenient for the maintenance and the management of equipment, can also make subaerial no convex draft hood, satisfies the requirement of city view.
Description
Technical Field
The utility model relates to a box-type substation, specific bury box-type substation entirely that says so.
Background
The existing traditional full-buried box transformer is based on a common box structure of high-voltage and low-voltage distribution equipment and a transformer. Basically, the structural style of the conventional box transformer on the earth surface is adopted, high-voltage equipment, a transformer and low-voltage equipment are placed in a common box body, and a ventilation exhaust port is arranged on the top surface, so that the following problems also exist simultaneously although the power distribution function and the underground requirement are realized:
one of them, the traditional case that buries entirely adopts the structural style that conventional case becomes on the earth's surface, because the box buries entirely in the underground, the transformer calorific capacity is big, and the traditional case that buries entirely can not conventional case become and sets up the mode of a plurality of vents around the box and solve ventilation cooling's requirement, can only take following two kinds of modes to solve: adding a ventilation and heat dissipation opening at the top of the box body; secondly, the volume of the box body is increased, and the saturation of the heat capacity of the air is increased; therefore, the volume of the traditional full-buried box transformer is huge, the external metal shell also meets the requirements of rigidity and strength at the same time, the weight is further increased, the volume of the traditional full-buried box transformer of the general 250kVA is about 5M to 6M to 2.5M, and the weight is about 10T;
secondly, the traditional full-buried box transformer substation has large heat productivity due to a transformer, high-voltage and low-voltage distribution equipment is influenced by the temperature of the high-voltage and low-voltage distribution equipment, so that the service life of components is shortened, an open structure has to be adopted to ensure the temperature rise of the control box transformer substation, a box body is enlarged, and meanwhile, a ground heat dissipation port is formed, so that the full-buried and full-sealed requirement is difficult to realize, ordinary dust and small animals are likely to enter the box transformer substation, ordinary water vapor and moisture can enter the box transformer substation, so that the equipment is affected with damp, and the service life and the power utilization safety of the equipment are affected;
thirdly, along with the increase of earth greenhouse effect, the extremely extreme weather of exception increases, and urban waterlogging takes place occasionally, and the rainwater pours into the case through the vent and becomes in to lead to the electrical equipment short circuit tripping operation, not only influence municipal administration resident power demand, more importantly brings the risk of power consumption safety. (ii) a
Fourth, the case is buried entirely to the tradition is bulky, and city underground pipe network is complicated, and city planning and old city reconstruction are difficult to provide huge fixed mounting ground, and weight is big also do not do benefit to the installation transportation, and the contradiction can directly influence the pace of city reconstruction.
Fifthly, the heat dissipation port protruding out of the ground is smaller than the box body, but the city surface appearance and the city appearance are also influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provided is a fully buried box type substation.
Solve above-mentioned technical problem, the utility model discloses the technical scheme who adopts as follows:
the utility model provides a bury box-type substation entirely, includes box, high tension switchgear, transformer and low voltage distribution equipment, its characterized in that: the box body comprises a transformer box and a high-voltage box and a low-voltage box which are mutually independent and are both made of metal, the transformer is a fully-sealed and fully-insulated underground transformer which is arranged in the transformer box, and the high-voltage switch equipment and the low-voltage distribution equipment are arranged in the high-voltage box and the low-voltage box;
the transformer box is placed in the basement, and a heat dissipation interval is reserved between the side wall of the transformer box and the wall surface of the basement; the top plate of the basement is arranged around the transformer box, so that the top surface of the transformer box, which is provided with a transformer access hole cover, is exposed above the ground; the side wall of the transformer box is provided with a plurality of heat dissipation ports, and the top plate of the basement is provided with a plurality of heat dissipation windows; a drainage device is arranged in the transformer tank;
the high-low pressure tank is buried in the underground pit, and the top surface of the high-low pressure tank, which is provided with the access hole cover, is exposed above the ground;
be provided with the cable pit between basement and the buried pit, the transformer respectively with connecting cable between high tension switchgear and the low pressure distribution equipment lays in the cable pit.
The utility model discloses a bury box-type substation's working method entirely as follows:
for a transformer:
under the condition of normal operation, because the basement where the transformer is located below the ground, the depth is about 2 meters generally, and the temperature is relatively low, the heat generated by the transformer can enter the heat dissipation interval through a plurality of heat dissipation ports on the side wall of the transformer box and then is discharged to the ground from the heat dissipation window on the top plate of the basement, so that the heat dissipation of the transformer is realized; in addition, because other parts of the transformer box except the heat dissipation port are sealed, when the underground water does not pass through the heat dissipation port, the underground water cannot enter the transformer box, so that the transformer box can be kept dry, the transformer is protected from being soaked by water under the condition of normal operation, and the service life of the transformer is prolonged;
under the condition that severe environment factors such as waterlogging or water logging exist, the interior of the transformer box and the heat dissipation interval are both full of water, the transformer is buried underground, the protection level reaches IP68, the transformer can normally run underwater, and the transformer can dissipate heat through the soaked water under the condition; and after the waterlogging is removed, accumulated water in the transformer box can be drained through the drainage device, so that the transformer can operate in a dry environment again.
For high-voltage switchgear and low-voltage switchgear:
the transformer is a main heating body of the box-type substation, and accounts for 70-80% of the whole heating value, the heating values of the high-voltage switch equipment and the low-voltage distribution equipment are very small, and the high-voltage switch equipment and the low-voltage distribution equipment are arranged in the high-voltage box and the low-voltage box which are independent of the transformer box, so that the high-voltage switch equipment and the low-voltage distribution equipment cannot be heated under the heat radiation action of the transformer, and therefore the heat generated by the high-voltage switch equipment and the low-voltage distribution equipment can be conducted to the ground through the high-voltage box and the low-voltage box which are buried in the buried pit to realize heat dissipation; moreover, because the high-low pressure box adopts a full-sealing structure, the water vapor and moisture can be prevented from immersing, dust and small animals are difficult to enter, and high-voltage switch equipment and low-voltage distribution equipment in the high-low pressure box can not be influenced even if urban inland inundation.
Therefore, the utility model can ensure that the transformer, the high-voltage switch equipment and the low-voltage distribution equipment can normally operate and effectively radiate under normal operation conditions or severe environmental conditions such as waterlogging or flooding, and can be flexibly distributed according to city planning or old city transformation; and transformer case and high-low pressure case after the branch case, the volume diminishes, weight reduction, can be convenient for transport, also can be convenient for the maintenance and the management of equipment, can also make subaerial no convex draft hood, satisfies the requirement of city view.
Preferably: the top surface of transformer case with the roof top surface parallel and level of basement, the thermovent is located the lateral wall top position of transformer case.
Preferably: the heat dissipation port of the transformer box is provided with a screen meeting IP3X requirements, so that the entry of small animals is isolated while the heat dissipation requirements are met.
Preferably: the transformer box is electrically connected with the ground so as to ensure that the transformer box and the shell of the transformer always keep zero potential and ensure the safety of power utilization.
As a preferred embodiment of the present invention: the bottom plate of the basement is composed of a fixed foundation in a # -shaped frame form and a sand and stone water seepage area filled outside the fixed foundation, and the transformer box is located on the fixed foundation. Therefore, the weight of the transformer and the transformer box can be supported by the fixed foundation, and when the drainage device drains accumulated water in the transformer box, the accumulated water can seep back to the ground through the sand seepage area.
Preferably: the transformer tank is characterized in that a water collecting tank is arranged on the inner wall of the bottom surface of the transformer tank, the drainage device comprises a submersible pump and a water level probe, the submersible pump and the water level probe are installed in the water collecting tank, and when the water level probe detects that the water level in the water collecting tank exceeds a preset value, the submersible pump can drain accumulated water in the transformer tank out of the transformer tank.
Therefore, on the one hand, after the waterlogging and the water-dropping, the accumulated water in the transformer box can be drained away by the submersible pump, and on the other hand, a small amount of accumulated water gathered in the transformer box can be drained away under the condition of normal operation, so that the transformer box can be kept dry.
The high-low voltage box can be a box, the high-voltage switch equipment and the low-voltage distribution equipment are installed in the box together, and the high-low voltage box can also be: the high-low pressure case is mutually independent high-voltage box and low-voltage box, high tension switchgear installs in the high-voltage box, low pressure distribution equipment installs in the low-voltage box to more nimble carry out the distributing type according to on-the-spot power supply condition and mounted position to high-voltage box and low-voltage box and arrange.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model adopts the mutually independent box-separating structure of the transformer box and the high-low pressure box, and the transformer box is arranged in the underground chamber, the high-low pressure box is buried in the buried pit, and then the cable trench is adopted to connect the basement and the buried pit, so that the normal operation and effective heat dissipation of the transformer, the high-voltage switch equipment and the low-voltage distribution equipment can be ensured no matter under the normal operation condition, or under the severe environmental conditions such as waterlogging or flooding, and the flexible distributed arrangement can be carried out according to the urban planning or the old city transformation;
and transformer case and high-low pressure case after the branch case, the volume diminishes, weight reduction, can be convenient for transport, also can be convenient for the maintenance and the management of equipment, can also make subaerial no convex draft hood, satisfies the requirement of city view.
Drawings
The invention will be described in further detail with reference to the following drawings and specific embodiments:
fig. 1 is an elevation view of a fully buried box type substation of the present invention;
fig. 2 is a plan view of the fully buried box type substation of the present invention;
fig. 3 is a schematic plan view of the bottom plate of the basement in the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and the accompanying drawings to help those skilled in the art to better understand the concept of the present invention, but the scope of the claims of the present invention is not limited to the following embodiments, and all other embodiments obtained without creative work for those skilled in the art will fall within the scope of the present invention without departing from the scope of the present invention.
Example one
As shown in fig. 1 to 3, the utility model discloses a buried box type transformer substation, including box, high tension switchgear 1, transformer 2 and low voltage distribution equipment 3, the box includes transformer case 4 and high-low voltage case 5 that mutually independent and made by metal, transformer 2 is the transformer is buried to totally enclosed totally insulated ground, should bury the transformer and install in transformer case 4, high tension switchgear 1 and low voltage distribution equipment 3 install in high-low voltage case 5;
the transformer box 4 is placed in the basement 6, and a heat dissipation interval 6a is reserved between the side wall of the transformer box 4 and the wall surface 6-3 of the basement 6; the top plate 6-1 of the basement 6 is arranged around the transformer tank 4, so that the top surface of the transformer tank 4 provided with the transformer access hole cover 4-1 is exposed above the ground; the side wall of the transformer box 4 is provided with a plurality of heat dissipation ports 4-2, and a top plate 6-1 of the basement 6 is provided with a plurality of heat dissipation windows 6-2; moreover, a drainage device is arranged in the transformer tank 4;
the high-low pressure tank 5 is buried in a buried pit 7, and the top surface of the high-low pressure tank 5 provided with the access hole cover 5-1 is exposed above the ground;
be provided with cable pit 8 between basement 6 and the buried pit 7, transformer 2 respectively with connecting cable between high tension switchgear 1 and the low pressure distribution equipment 3 is laid in cable pit 8.
The utility model discloses a bury box-type substation's working method entirely as follows:
for the transformer 2:
under the condition of normal operation, because the basement 6 where the transformer 2 is located is positioned below the ground, the depth is about 2 meters generally, and the temperature is relatively low, the heat generated by the transformer 2 can enter the heat dissipation interval 6a through the plurality of heat dissipation ports 4-2 on the side wall of the transformer box 4 and then is discharged to the ground from the heat dissipation window 6-2 on the top plate 6-1 of the basement 6, so that the heat dissipation of the transformer 2 is realized; in addition, as the other parts of the transformer box 4 except the heat dissipation port 4-2 are sealed, when the underground water does not pass through the heat dissipation port 4-2, the underground water cannot enter the transformer box 4, so that the transformer box 4 can be kept dry, the transformer 2 is protected from being soaked by the water under the condition of normal operation, and the service life of the transformer 2 is prolonged;
under the condition that severe environment factors such as waterlogging or flooding exist, the interior of the transformer box 4 and the heat dissipation interval 6a are fully soaked with water, and because the transformer 2 is buried underground, the protection level reaches IP68, the transformer can normally run underwater, and the transformer 2 can dissipate heat through the soaked water under the condition; and after the waterlogging is removed, the accumulated water in the transformer tank 4 can be drained through the drainage device, so that the transformer 2 can operate in a dry environment again.
For the high-voltage switchgear 1 and the low-voltage switchgear 3:
because the transformer 2 is a main heating body of the box-type substation, the heating amount accounts for 70-80% of the whole heating amount, the heating amounts of the high-voltage switch equipment 1 and the low-voltage distribution equipment 3 are very small, and because the high-voltage switch equipment 1 and the low-voltage distribution equipment 3 are arranged in the high-voltage box 5 independent of the transformer box 4, the high-voltage switch equipment 1 and the low-voltage distribution equipment 3 are not heated by the heat radiation effect of the transformer 2, therefore, the heat generated by the high-voltage switch equipment 1 and the low-voltage distribution equipment 3 can be conducted to the ground through the high-voltage box 5 buried in the buried pit 7 to realize heat dissipation; moreover, because the high-low pressure box 5 adopts a full-sealing structure, the water vapor and moisture can be prevented from immersing, dust and small animals are difficult to enter, and the high-voltage switch equipment 1 and the low-voltage distribution equipment 3 in the high-low pressure box 5 cannot be influenced even if urban inland inundation.
Therefore, the utility model can ensure that the transformer 2, the high-voltage switch device 1 and the low-voltage distribution device 3 can normally operate and effectively radiate heat under normal operation conditions or severe environmental conditions such as waterlogging or flooding, and can be flexibly distributed according to city planning or old city transformation; and transformer case 4 and high-low pressure case 5 after the branch case, the volume diminishes, weight reduction, can be convenient for transport, also can be convenient for the maintenance and the management of equipment, can also make subaerial no convex draft hood, satisfies the requirement of city view.
The above is a basic implementation manner of the first embodiment, and further optimization, improvement and limitation may be performed on the basis of the basic implementation manner:
preferably: the top surface of the transformer box 4 is flush with the top surface of the top plate 6-1 of the basement 6, and the heat dissipation port 4-2 is located at the top of the side wall of the transformer box 4.
Preferably: and a screen meeting IP3X is arranged at the heat dissipation port 4-2 of the transformer box 4 so as to meet the heat dissipation requirement and isolate the small animals from entering.
Preferably: the transformer box 4 is electrically connected with the ground to ensure that the transformer box 4 and the shell of the transformer 2 always keep zero potential and ensure the safety of power utilization.
Example two
On the basis of the first embodiment, the second embodiment further adopts the following preferred structure:
the bottom plate of the basement 6 is composed of a fixed foundation 6-4 in a # -shaped frame form and a sandstone seepage zone 6-5 filled outside the fixed foundation 6-4, and the transformer box 4 is located on the fixed foundation 6-4. Thus, the weight of the transformer 2 and the transformer tank 4 can be supported by the fixed foundation 6-4, and when the drainage device drains the accumulated water in the transformer tank 4, the accumulated water can seep back to the ground through the sand seepage area 6-5.
The above is the basic implementation manner of the second embodiment, and further optimization, improvement and limitation can be made on the basis of the basic implementation manner:
preferably: the inner wall of the bottom surface of the transformer tank 4 is provided with a water collecting tank 4a, the drainage device comprises a submersible pump 9 and a water level probe which are installed in the water collecting tank 4a, and when the water level probe detects that the water level in the water collecting tank 4a exceeds a preset value, the submersible pump 9 can discharge accumulated water in the transformer tank 4 to the outside of the transformer tank 4.
Thereby, on the one hand can utilize immersible pump 9 to drain away the ponding in transformer case 4 after the waterlogging returns water, and on the other hand also can be under the condition of normal operating, drain away the a small amount of ponding that assembles in transformer case 4 to can keep dry in ensureing transformer case 4.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the third embodiment further adopts the following preferable structure:
the high-low voltage box 5 may be a box in which the high-voltage switchgear 1 and the low-voltage distribution equipment 3 are installed together, or may be: high-low pressure case 5 is mutually independent high-pressure case and low-pressure case, high tension switchgear 1 is installed in the high-pressure incasement, low voltage distribution equipment 3 is installed in the low-pressure incasement to more nimble carry out the distributed arrangement to high-pressure case and low-pressure case according to on-the-spot power supply condition and mounted position.
The present invention is not limited to the above-mentioned embodiments, and according to the above-mentioned contents, according to the common technical knowledge and conventional means in the field, without departing from the basic technical idea of the present invention, the present invention can also make other equivalent modifications, replacements or changes in various forms, all falling within the protection scope of the present invention.
Claims (7)
1. The utility model provides a bury box-type substation entirely, includes box, high tension switchgear (1), transformer (2) and low voltage distribution equipment (3), its characterized in that: the box body comprises a transformer box (4) and a high-low voltage box (5) which are independent from each other and are both made of metal, the transformer (2) is an underground transformer which is installed in the transformer box (4), and the high-voltage switch equipment (1) and the low-voltage distribution equipment (3) are installed in the high-low voltage box (5);
the transformer box (4) is placed in the basement (6), and a heat dissipation interval (6a) is reserved between the side wall of the transformer box (4) and the wall surface (6-3) of the basement (6); the top plate (6-1) of the basement (6) is arranged around the transformer box (4), so that the top surface of the transformer box (4) provided with the transformer access hole cover (4-1) is exposed above the ground; the side wall of the transformer box (4) is provided with a plurality of heat dissipation ports (4-2), and a top plate (6-1) of the basement (6) is provided with a plurality of heat dissipation windows (6-2); moreover, a drainage device is arranged in the transformer box (4);
the high-low pressure tank (5) is buried in a buried pit (7), and the top surface of the high-low pressure tank (5) provided with the access hole cover (5-1) is exposed above the ground;
be provided with cable pit (8) between basement (6) and the buried pit (7), transformer (2) respectively with connecting cable between high tension switchgear (1) and low voltage distribution equipment (3) lays in cable pit (8).
2. The fully buried box substation of claim 1, characterized in that: the top surface of the transformer box (4) is flush with the top surface of a top plate (6-1) of the basement (6), and the heat dissipation opening (4-2) is located at the top of the side wall of the transformer box (4).
3. The fully buried box substation of claim 1, characterized in that: and a screen meeting IP3X is arranged at a heat dissipation port (4-2) of the transformer box (4).
4. The fully buried box substation of claim 1, characterized in that: the transformer box (4) is electrically connected with the ground.
5. A fully buried box substation according to any one of claims 1 to 4, characterized in that: the bottom plate of the basement (6) is composed of a fixed foundation (6-4) in a # -shaped frame form and a sand and stone water seepage area (6-5) filled outside the fixed foundation (6-4), and the transformer box (4) is located on the fixed foundation (6-4).
6. The fully buried box substation of claim 5, wherein: the transformer tank is characterized in that a water collecting tank (4a) is arranged on the inner wall of the bottom surface of the transformer tank (4), the drainage device comprises a submersible pump (9) and a water level probe, the submersible pump (9) is installed in the water collecting tank (4a), and when the water level probe detects that the water level in the water collecting tank (4a) exceeds a preset value, the submersible pump (9) can drain accumulated water in the transformer tank (4) out of the transformer tank (4).
7. A fully buried box substation according to any one of claims 1 to 4, characterized in that: the high-voltage box (5) is a high-voltage box and a low-voltage box which are mutually independent, the high-voltage switch equipment (1) is arranged in the high-voltage box, and the low-voltage distribution equipment (3) is arranged in the low-voltage box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022989523.7U CN214506251U (en) | 2020-12-14 | 2020-12-14 | Bury box-type substation entirely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022989523.7U CN214506251U (en) | 2020-12-14 | 2020-12-14 | Bury box-type substation entirely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214506251U true CN214506251U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022989523.7U Active CN214506251U (en) | 2020-12-14 | 2020-12-14 | Bury box-type substation entirely |
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| Country | Link |
|---|---|
| CN (1) | CN214506251U (en) |
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2020
- 2020-12-14 CN CN202022989523.7U patent/CN214506251U/en active Active
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