Phase change cold storage type intelligent box-type substation

Abstract

The utility model discloses a phase change cold storage type intelligent box-type substation, which comprises a base, a box body, a top cover and a liquid cooling mechanism, and an accommodating groove is formed in the inner side of the base; the box body comprises a plurality of cavities, a partition plate is fixed in each cavity and divides the cavity into a cooling cavity and a functional cavity, and a temperature sensor is mounted in each functional cavity; the liquid cooling mechanism comprises a liquid cooling box, a circulating pump and a circulating pipeline, the circulating pipeline comprises an input pipeline, an output pipeline, a lower-layer heat exchange coil and an upper-layer heat exchange coil, and an electric flow regulating valve is mounted on the upper-layer heat exchange coil. Cooling liquid in the liquid cooling box is conveyed to the lower-layer heat exchange coil pipe through the circulating pump and exchanges heat with the phase change cold storage material in the containing groove, so that the temperature in the cooling cavity is reduced, and rapid cooling of the functional cavity is promoted. The temperature value detected by the temperature sensor is positively correlated with the opening degree of the corresponding electric flow regulating valve, so that differential heat dissipation is carried out according to the heating characteristics of different cavities in the box body, and the local high temperature elimination efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to box type substation technical field, especially a phase change cold accumulation type intelligent box type substation. BACKGROUND

[0002] The conventional box type substation adopts natural ventilation or fan directional air supply to dissipate heat, when working in the environment with large diurnal temperature range, when the temperature in the box is high, forced convection is promoted by the fan to dissipate heat, but due to the multiple chambers in the box, including high voltage chamber, transformer chamber, low voltage chamber, due to the different temperatures in the chambers, the unified air supply by the fan cannot differentiate the heat dissipation according to the heat generation characteristics of the different chambers in the box, resulting in difficult elimination of local high temperature and easy damage to electrical equipment. SUMMARY

[0003] Therefore, it is necessary to provide a phase change cold accumulation type intelligent box type substation aiming at the above technical problems.

[0004] In order to achieve the above purpose, the utility model provides a phase change cold accumulation type intelligent box type substation, which comprises a base, a box, a top cover, a liquid cooling mechanism, the box is fixedly installed on the base, the top cover is fixedly installed on the box, and the inner side of the base is provided with a containing groove for storing phase change cold accumulation material; the box comprises multiple chambers, each chamber is fixedly provided with a partition plate, the partition plate divides the chamber into a cooling cavity located in the lower layer and a functional cavity located in the upper layer, the cooling cavity and the functional cavity are communicated through a lower air inlet formed in the partition plate, and an air inlet communicating with the cooling cavity is formed in the box; each functional cavity is provided with a temperature sensor; the top cover has an air chamber, the bottom of the top cover is provided with an upper air inlet and an exhaust port, the air chamber is communicated with each functional cavity through the upper air inlet, and the air chamber is communicated with the atmosphere through the exhaust port; the liquid cooling mechanism comprises a liquid cooling tank, a circulating pump and a circulating pipeline, the circulating pipeline comprises an input pipeline, an output pipeline, a lower heat exchange coil and an upper heat exchange coil, the lower heat exchange coil is located in the containing groove, the input end of the lower heat exchange coil is communicated with the input end of the circulating pump, the output end of the lower heat exchange coil is communicated with the input pipeline, the input end of the circulating pump is communicated with the liquid cooling tank, the output end of the output pipeline is communicated with the liquid cooling tank, the upper heat exchange coil is corresponding to the functional cavity, the upper heat exchange coil is located in the corresponding functional cavity, the input end of the upper heat exchange coil is communicated with the input pipeline, the output end of the upper heat exchange coil is communicated with the output pipeline, and each upper heat exchange coil is provided with an electric flow regulating valve.

[0005] Preferably, the first heat dissipation fan is installed at the lower end of the partition plate and located at each lower air inlet, and a filter plate is installed in each lower air inlet.

[0006] Preferably, the upper air inlet is corresponding to the functional cavity, and a second heat dissipation fan is installed on the top cover and located at each upper air inlet.

[0007] Preferably, air inlets corresponding to the cooling cavities are formed on the box body, and air inlet filters are installed at the air inlets.

[0008] Preferably, air outlet filters are installed at the air outlets.

[0009] Preferably, the liquid cooling box is provided with heat dissipation fins and a third heat dissipation fan.

[0010] Preferably, the liquid cooling box is provided with a liquid inlet at the top, and a box cover is detachably installed at the liquid inlet.

[0011] Preferably, the box body is provided with box doors corresponding to the functional cavities.

[0012] Preferably, support plates are fixed to the outer wall of the base, and the liquid cooling box and the circulating pump are installed on the support plates.

[0013] Compared with the prior art, the technical scheme has at least one of the following beneficial effects:

[0014] 1. When the temperature in the functional cavity is too high, the circulating pump transports the cooling liquid in the liquid cooling box to the lower heat exchange coil, the cooling liquid exchanges heat with the phase change cold storage material in the containing groove when flowing in the lower heat exchange coil, the temperature is further reduced, and then enters the input pipeline and the corresponding upper heat exchange coil. The upper heat exchange coil absorbs the heat in the cooling cavity, so that the temperature in the cooling cavity is reduced, thereby reducing the temperature of the air entering the functional cavity and promoting rapid cooling of the functional cavity.

[0015] 2. By controlling the opening degree of each electric flow regulating valve, the temperature value detected by the temperature sensor is positively correlated with the opening degree of the corresponding electric flow regulating valve, so that the flow of cooling liquid in the upper heat exchange coil below the chamber with higher temperature is larger, thereby differentiating the heat dissipation according to the heat generation characteristics of different chambers in the box body, improving the local high temperature elimination efficiency, and avoiding damage to the electrical equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of a phase change cold storage type intelligent box-type substation of an embodiment.

[0017] Figure 2 It is a three-dimensional view of a phase change cold storage type intelligent box-type substation of an embodiment. Figure 1 ;

[0018] Figure 3 It is a three-dimensional view of a phase change cold storage type intelligent box-type substation of an embodiment. Figure 2 ;

[0019] Figure 4 It is a partial sectional view of a phase change cold storage type intelligent box-type substation of an embodiment.

[0020] Figure 5 A perspective view of a base and a liquid cooling mechanism according to an embodiment;

[0021] Figure 6 A top view of an output pipeline according to an embodiment;

[0022] Figure 7 A top view of an input pipeline, an output pipeline, an upper heat exchange coil and an electric flow regulating valve according to an embodiment;

[0023] 1, base; 11, containing groove; 12, support plate; 2, box body; 21, cavity; 22, partition; 221, lower air vent; 222, first cooling fan; 223, filter plate; 23, cooling cavity; 24, functional cavity; 241, temperature sensor; 25, air inlet; 251, air inlet filter screen; 26, box door; 3, top cover; 31, air vent cavity; 32, upper air vent; 33, air outlet; 331, air outlet filter screen; 34, second cooling fan; 4, liquid cooling mechanism; 41, liquid cooling box; 411, cooling fin; 412, third cooling fan; 413, liquid inlet; 414, box cover; 42, circulating pump; 43, circulating pipeline; 431, input pipeline; 432, output pipeline; 433, lower heat exchange coil; 434, upper heat exchange coil; 4341, electric flow regulating valve. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] Please refer to Figures 1 to 7 The embodiment of the present application provides a phase change cold storage type intelligent box-type substation, which comprises a base 1, a box body 2, a top cover 3 and a liquid cooling mechanism 4. The box body 2 is fixedly installed on the base 1, and the top cover 3 is fixedly installed on the box body 2. The inner side of the base 1 is provided with a containing groove 11 for storing phase change cold storage materials. The phase change cold storage materials can be paraffin, fatty acid, hydrated salt and the like. For example, the paraffin can be n-octadecane, n-eicosane or mixed paraffin with adjustable phase change temperature.

[0026] The box body 2 comprises three chambers 21, which are high-pressure chamber, transformer chamber and low-pressure chamber respectively, each chamber 21 is fixed with a partition plate 22, the partition plate 22 divides the chamber 21 into a cooling cavity 23 located at the lower layer and a functional cavity 24 located at the upper layer, the cooling cavity 23 and the functional cavity 24 are communicated through the lower layer air vent 221 opened on the partition plate 22, the box body 2 is provided with an air inlet 25 communicated with the cooling cavity 23; each functional cavity 24 is installed with a temperature sensor 241;

[0027] The top cover 3 has a ventilation cavity 31, the bottom of the top cover 3 is provided with an upper layer air vent 32 and an exhaust port 33, the ventilation cavity 31 is communicated with each functional cavity 24 through the upper layer air vent 32, and the ventilation cavity 31 is communicated with the atmosphere through the exhaust port 33;

[0028] The liquid cooling mechanism 4 comprises a liquid cooling tank 41, a circulating pump 42 and a circulating pipeline 43, the circulating pipeline 43 comprises an input pipeline 431, an output pipeline 432, a lower layer heat exchange coil 433 and an upper layer heat exchange coil 434, the lower layer heat exchange coil 433 is located in the containing groove 11, the input end of the lower layer heat exchange coil 433 is communicated with the input end of the circulating pump 42, the output end of the lower layer heat exchange coil 433 is communicated with the input pipeline 431, the input end of the circulating pump 42 is communicated with the liquid cooling tank 41, the output end of the output pipeline 432 is communicated with the liquid cooling tank 41, the upper layer heat exchange coil 434 corresponds to the functional cavity 24 one by one, the upper layer heat exchange coil 434 is located in the corresponding functional cavity 24, the input end of the upper layer heat exchange coil 434 is communicated with the input pipeline 431, the output end of the upper layer heat exchange coil 434 is communicated with the output pipeline 432, each upper layer heat exchange coil 434 is installed with an electric flow regulating valve 4341.

[0029] The embodiment is further provided with a controller, the controller is electrically connected with the temperature sensor 241, the circulating pump 42 and the electric flow regulating valve 4341, the temperature data detected by the temperature sensor 241 is used to judge whether the box body 2 needs to use the liquid cooling mechanism 4 to reduce temperature, and then the circulating pump 42 and the electric flow regulating valve 4341 are controlled to work, the specific control principle is referred to the following working principle.

[0030] Working principle:

[0031] The temperature in each functional cavity 24 is detected by the corresponding temperature sensor 241, when the temperature value detected by each temperature sensor 241 is lower than the preset minimum threshold value, the functional cavity 24 is cooled by natural ventilation, the external air enters the cooling cavity 23, the lower layer air vent 221, the functional cavity 24, the upper layer air vent 32 and the ventilation cavity 31 in sequence through the air inlet 25, and is finally discharged through the exhaust port 33, so that the heat in each chamber 21 is taken out, and natural ventilation cooling is realized;

[0032] When the outside temperature is high, the natural ventilation effect is poor, and the liquid cooling is carried out on the basis of natural ventilation heat dissipation; when the temperature value detected by each of the temperature sensors 241 is higher than the preset minimum threshold value, the circulating pump 42 and the corresponding electric flow regulating valve 4341 are opened, and the circulating pump 42 delivers the cooling liquid in the liquid cooling tank 41 to the lower heat exchange coil 433, and the cooling liquid exchanges heat with the phase change cold storage material in the containing groove 11 when flowing in the lower heat exchange coil 433, and the temperature is further reduced, and then enters the input pipeline 431 and the corresponding upper heat exchange coil 434, and the upper heat exchange coil 434 is located in the cooling cavity 23 and can absorb the heat in the cooling cavity 23, so that the temperature in the cooling cavity 23 is reduced, thereby reducing the temperature of the air entering the functional cavity 24, and promoting the rapid cooling of the functional cavity 24.

[0033] When the temperature values detected by the plurality of temperature sensors 241 are all higher than the preset minimum threshold value, the corresponding electric flow regulating valves 4341 are all opened, and the controller controls the opening degree of the corresponding electric flow regulating valve 4341 according to the temperature value detected by each temperature sensor 241, so that the temperature value detected by the temperature sensor 241 is positively correlated with the opening degree of the corresponding electric flow regulating valve 4341, thereby increasing the flow of the cooling liquid in the upper heat exchange coil 434 below the chamber 21 with higher temperature, and differentiating the heat dissipation according to the heat generation characteristics of the different chambers 21 in the box 2, improving the local high-temperature elimination efficiency, and avoiding damage to the electrical equipment.

[0034] During the day, the phase change cold storage material absorbs the heat in the cooling cavity 23 to cool the chamber 21; at night, the phase change cold storage material absorbs the external cold to reduce the temperature; the phase change cold storage type intelligent box-type substation is especially suitable for application in an environment with large diurnal temperature difference. The base 1 is made of thermal insulation material and has a heat preservation function; at night, the phase change cold storage material can be accelerated to exchange heat with the outside through the cooling liquid in the circulating pipeline 43.

[0035] In an embodiment, in order to improve the air convection speed and improve the heat dissipation effect, please refer to Figure 1 The first heat dissipation fan 222 is installed at the lower end of the partition plate 22 and located at each lower air inlet 221, and the filter plate 223 is installed in each lower air inlet 221. The first heat dissipation fan 222 can also work at the same time when the circulating pump 42 works. The first heat dissipation fan 222 can introduce the air in the cooling cavity 23 into the functional cavity 24, promote air convection, and improve the heat dissipation effect. The filter plate 223 can block the impurities in the functional cavity 24 from entering the cooling cavity 23, and the filter plate 223 has a certain thickness, which is convenient for supporting the components in the functional cavity 24.

[0036] In an embodiment, in order to further improve the air convection speed and improve the heat dissipation effect, please refer to Figure 1 、 Figure 4 , the upper air vents 32 are arranged one by one corresponding to the functional cavities 24, and the second heat dissipation fans 34 are arranged on the top cover 3 and located at the upper air vents 32. The second heat dissipation fans 34 can work at the same time as the circulating pump 42 works. The second heat dissipation fans 34 can introduce the air in the functional cavities 24 into the air cavity 31, promote the air convection, and improve the heat dissipation effect.

[0037] In an embodiment, in order to avoid that the external impurities enter the cooling cavity 23 through the air inlet 25, please refer to Figure 1 and Figure 4 , the air inlets 25 are arranged one by one corresponding to the cooling cavities 23 on the box body 2, and the air inlet filters 251 are arranged at the air inlets 25. The air inlet filters 251 can block the external large-particle impurities from entering the cooling box, and the air can enter and exit the cooling cavity 23 through the filter holes of the air inlet filters 251.

[0038] In an embodiment, please refer to Figure 1 and Figure 3 , in order to avoid that the external impurities enter the air cavity 31 through the air outlet 33, the air outlet filters 331 are arranged at the air outlets 33. The air outlet filters 331 can block the external large-particle impurities from entering the air cavity 31, and the air can enter and exit the air cavity 31 through the filter holes of the air outlet filters 331.

[0039] In an embodiment, in order to improve the heat dissipation effect of the liquid cooling box 41, please refer to Figure 1 and Figure 5 , the heat dissipation fins 411 and the third heat dissipation fans 412 are arranged on the liquid cooling box 41. The heat dissipation fins 411 can increase the contact area with the air, increase the heat dissipation area, and the third heat dissipation fans 412 are arranged on the heat dissipation fins 411, which can improve the heat dissipation efficiency. The third heat dissipation fans 412 can work at the same time as the circulating pump 42 works, or the third heat dissipation fans 412 start to work when the temperature value detected by the temperature sensor 241 reaches a corresponding value.

[0040] In an embodiment, in order to facilitate the addition of cooling liquid into the liquid cooling box 41, please refer to Figure 5 , the liquid inlet 413 is arranged on the top of the liquid cooling box 41, and the box cover 414 is detachably arranged at the liquid inlet 413. The box cover 414 can be detachably connected with the liquid inlet 413 by means of bolt connection, interference fit, or clamping.

[0041] In an embodiment, in order to facilitate the access of maintenance personnel to each functional cavity 24, please refer to Figure 2 and Figure 4The box 2 is provided with a box door 26 corresponding to each functional cavity 24. The box door 26 is hinged to the box 2, and by opening the box door 26, the corresponding functional cavity 24 can be accessed.

[0042] In an embodiment, in order to support the liquid cooling box 41 and the circulating pump 42, please refer to Figures 1 to 3 The base 1 is provided with a support plate 12 fixed on the outer wall, and the liquid cooling box 41 and the circulating pump 42 are installed on the support plate 12. In order to improve the support stability of the support plate 12, a reinforcing rib can also be fixed at the lower end of the support plate 12. The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0043] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

[0044] The terms "first", "second" are only used for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0045] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A phase-change cold storage intelligent prefabricated substation, characterized in that, The system includes a base (1), a housing (2), a top cover (3), and a liquid cooling mechanism (4). The housing (2) is fixedly installed on the base (1), and the top cover (3) is fixedly installed on the housing (2). The base (1) has an inner trough (11) for storing phase change cold storage materials. The housing (2) includes multiple chambers (21), each chamber (21) is fixed with a partition (22), which divides the chamber (21) into a lower cooling chamber (23) and an upper functional chamber (24). The functional chamber (24) is connected to the upper vent (221) on the partition (22). The housing (2) is provided with an air inlet (25) that is connected to the cooling chamber (23). Each functional chamber (24) is equipped with a temperature sensor (241). The top cover (3) has a ventilation chamber (31). The bottom of the top cover (3) is provided with an upper vent (32) and an exhaust port (33). The ventilation chamber (31) is connected to each functional chamber (24) through the upper vent (32). The ventilation chamber (31) is connected to each functional chamber (24) through the exhaust port (33). It is connected to the atmosphere; the liquid cooling mechanism (4) includes a liquid cooling box (41), a circulating pump (42) and a circulating pipe (43). The circulating pipe (43) includes an input pipe (431), an output pipe (432), a lower heat exchange coil (433), and an upper heat exchange coil (434). The lower heat exchange coil (433) is located in the receiving tank (11). The input end of the lower heat exchange coil (433) is connected to the input end of the circulating pump (42), and the output end of the lower heat exchange coil (433) is connected to the input pipe (431). The circulating pump (434) is connected to the upper heat exchange coil (434). 42) The input end is connected to the liquid cooling box (41), and the output end of the output pipe (432) is connected to the liquid cooling box (41). The upper heat exchange coil (434) corresponds to the functional cavity (24) one by one. The upper heat exchange coil (434) is located in the corresponding functional cavity (24). The input end of the upper heat exchange coil (434) is connected to the input pipe (431), and the output end of the upper heat exchange coil (434) is connected to the output pipe (432). Each upper heat exchange coil (434) is equipped with an electric flow regulating valve (4341).

2. The phase-change cold storage intelligent prefabricated substation according to claim 1, characterized in that, A first cooling fan (222) is installed at the lower end of the partition (22) and at each lower air vent (221), and a filter plate (223) is installed in each lower air vent (221).

3. The phase-change cold storage intelligent prefabricated substation according to claim 1, characterized in that, The upper vent (32) corresponds one-to-one with the functional cavity (24), and a second cooling fan (34) is installed on the top cover (3) and at each upper vent (32).

4. The phase-change cold storage intelligent prefabricated substation according to claim 1, characterized in that, The housing (2) has an air inlet (25) that corresponds to the cooling chamber (23), and an air inlet filter (251) is installed at the air inlet (25).

5. The phase-change cold storage intelligent prefabricated substation according to claim 1, characterized in that, An exhaust filter (331) is installed at the exhaust port (33).

6. The phase-change cold storage intelligent prefabricated substation according to claim 1, characterized in that, The liquid cooling box (41) is equipped with heat dissipation fins (411) and a third cooling fan (412).

7. The phase-change cold storage intelligent prefabricated substation according to claim 1, characterized in that, The liquid cooling box (41) is equipped with a liquid inlet (413) on the top, and a box cover (414) can be detachably installed at the liquid inlet (413).

8. The phase-change cold storage intelligent prefabricated substation according to claim 1, characterized in that, The box body (2) is equipped with a box door (26) that corresponds one-to-one with the functional cavity (24).

9. The phase-change cold storage intelligent prefabricated substation according to claim 1, characterized in that, A support plate (12) is fixed on the outer wall of the base (1), and the liquid cooling box (41) and the circulating pump (42) are installed on the support plate (12).

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