CN117498198A

CN117498198A - An environmentally friendly and energy-saving substation

Info

Publication number: CN117498198A
Application number: CN202311505412.6A
Authority: CN
Inventors: 施会; 盛连军; 陈侃; 滕佳赟; 高余奇; 高源�; 李安琦; 周超杰
Original assignee: State Grid Shanghai Electric Power Co Ltd
Current assignee: State Grid Shanghai Electric Power Co Ltd
Priority date: 2023-11-13
Filing date: 2023-11-13
Publication date: 2024-02-02
Anticipated expiration: 2043-11-13
Also published as: CN117498198B

Abstract

This application discloses an environmentally friendly and energy-saving substation, which relates to the field of electric power equipment. It includes a transformer and a switch cabinet. The transformer includes a housing. The switch cabinet includes a cabinet. The cabinet is formed with dehumidification spaces and dehumidification spaces in sequence from the outside to the inside. An installation space for installing components. A ventilation pipe is provided between the housing and the cabinet to connect the internal area of the housing and the dehumidification space. The ventilation pipe is provided with a ventilation pipe for pumping the hot air in the housing to the dehumidification space. exhaust components. This application helps reduce energy consumption and costs, and reduces the difficulty of maintenance.

Description

Environment-friendly energy-saving transformer substation

Technical Field

The application relates to the field of power equipment, in particular to an environment-friendly energy-saving transformer substation.

Background

The transformer substation is a place for converting voltage and current, receiving electric energy and distributing electric energy in the electric power system.

The transformer substation comprises a transformer and a switch cabinet, and the switch cabinet is generally provided with a dehumidifying and heating system in practice to prevent the switch from being wet and tripping. In order to improve the dehumidifying and heating effect, a common way to increase the number and power of the heaters is to use a heater for the dehumidifying and heating system. But this results in a great energy consumption, which is not compatible with the low carbon development advocated by the country; in addition, when the power of the heater is too high, the power line is very easy to burn, the damage rate of the temperature controller is also very high, so that the temperature controller has very high maintenance cost, and in low-temperature wet seasons, operators are required to patrol.

In addition, since many heaters of the high-voltage cabinets cannot be replaced in a live state, once the heaters burn out, internal discharge is easily caused in rainy seasons, the heaters must be replaced in a short period of time in a power failure, and economic losses caused by unplanned power failure are quite remarkable. Therefore, the heating and dehumidifying technology of the switch cabinet is extremely important in a transformer substation system. The invention aims to provide an environment-friendly energy-saving transformer substation, which can realize heating and dehumidifying operation and simultaneously reduce energy consumption and cost.

Disclosure of Invention

In order to reduce energy consumption and cost, the application provides an environment-friendly energy-saving transformer substation.

The application provides an environmental protection and energy saving transformer substation adopts following technical scheme:

the utility model provides an environmental protection and energy saving transformer substation, includes transformer and cubical switchboard, the transformer includes the casing, the cubical switchboard includes the cabinet body, the cabinet body is formed with dehumidification space and the installation space that is used for installing components and parts by outside-in proper order, be provided with the ventilation pipe between casing and the cabinet body for communicate the inside region of casing and dehumidification space, be provided with on the ventilation pipe and be used for taking out the exhaust component in the casing hot gas to dehumidification space.

By adopting the technical scheme, in the working process of the transformer substation, a large amount of hot air is generated in the shell of the transformer, the hot air is pumped into the dehumidifying space by the air draft assembly, the cabinet body is heated by the hot air, and finally the heat is conducted into the installation space, so that the heating and dehumidifying of the switch cabinet can be realized, and in this way, the waste heat in the transformer can be utilized, and the dehumidifying energy consumption is greatly reduced; in the process, the air draft assembly is arranged on the ventilation pipe, and even if the ventilation pipe is damaged, the ventilation assembly can be directly replaced outside without power failure, so that the maintenance cost is reduced; in addition, even when the exhaust component is damaged, because the ventilation pipe enables the inner area of the shell to be always communicated with the dehumidifying space, the exhaust pipe can enter the dehumidifying space in the process of expanding hot air in the shell, and the exhaust component can temporarily perform heating and dehumidifying when damaged, so that the probability of the switch cabinet tripping due to moisture can be reduced.

Preferably, the air draft assembly comprises a first fan and a first motor for driving the first fan to rotate, an air inlet of the first fan is positioned at one side close to the shell, and an air outlet of the first fan is positioned at one side close to the cabinet body.

Through adopting above-mentioned technical scheme, first motor operation drives first fan and rotates, realizes taking out the inside steam of transformer to the dehumidification space in.

Preferably, the cabinet is internally provided with the inner bag, the inner bag is the heat conduction material, installation space is located the inner bag, dehumidification space is located between the cabinet body and the inner bag, air intake and air outlet have been seted up on the cabinet body, air intake and air outlet all communicate with dehumidification space, ventilation pipe and air intake intercommunication, the cabinet body is located air outlet department and is provided with one-way discharge valve.

Through adopting above-mentioned technical scheme, when first fan operation, steam gets into the dehumidification space, and in the heat can be transmitted to installation space from the inner bag, the realization was dehumidified to the heating of components and parts.

Preferably, the cabinet body is last to be linked together has the cooling tube, just cooling tube and installation space intercommunication, the one end and the outside air intercommunication of cabinet body are kept away from to the cooling tube, be provided with second fan and drive second fan pivoted driving piece on the cooling tube, be provided with the communicating pipe with the outside air intercommunication on the inner bag.

Through adopting above-mentioned technical scheme, summer or under the higher circumstances of ambient temperature, the temperature in the cubical switchboard can be higher than ambient temperature, utilizes driving piece drive second fan operation, can take away the steam in the cubical switchboard totally to make in the external air gets into the cubical switchboard through communicating pipe, realize the heat dissipation to the cubical switchboard.

Preferably, the communicating tube is disposed at the lower side of the inner container.

Through adopting above-mentioned technical scheme, with the downside of communicating pipe setting inner bag, when the steam in the second fan extraction installation space, outside air gets into wherein thereupon, outside air can flow to the upside gradually from the downside of inner bag, and then helps improving the radiating effect.

Preferably, the ventilation pipe is communicated with the radiating pipe through a connecting pipe, a first switch valve is arranged on one side, close to the first fan, of the connecting pipe, and a second switch valve is arranged on one side, close to the second fan, of the radiating pipe.

By adopting the technical scheme, when heating and dehumidifying are performed, the first switch valve is opened, the second switch valve is closed, and hot gas in the transformer shell can enter the dehumidifying space to realize heating and dehumidifying operation; when the heat dissipation operation is carried out, the first switch valve is closed, the second switch valve is opened, the second fan operates, and the communication plate is opened under the action of air pressure, so that the heat dissipation operation is realized; in addition, when carrying out the heat dissipation operation, can open first ooff valve simultaneously, the second fan still can take away the inside steam of transformer this moment, realizes the heat dissipation to cubical switchboard, transformer.

Preferably, the cooling tube is close to the one end and the dehumidification space intercommunication of the cabinet body, just the cooling tube is connected at the lateral wall of the cabinet body, the communication mouth has been seted up to the top side of inner bag, the inner bag is located communication mouth department and articulates there is the intercommunication board, works as when the intercommunication board is opened, the opening of intercommunication board is towards the cooling tube, install the third ooff valve on the communicating pipe.

Through adopting above-mentioned technical scheme, close the third ooff valve, the second fan operation can now take away the air in dehumidification space, can form the negative pressure in dehumidification space, because the steam atmospheric pressure of installation space is greater than dehumidification space, and under the operation of continuously bleeding of second fan, the intercommunication board can be opened, make dehumidification space and installation space intercommunication, the second fan opportunity takes away the steam in the installation space this moment, realize the heat dissipation, afterwards the third ooff valve is opened, supply atmospheric pressure in to the mounting hole spare, help preventing that the intercommunication board from closing, and this in-process, the steam can flow to the cooling tube along the intercommunication mouth, the air between opposite side to the cooling tube of intercommunication board is very rarefaction, can play the adsorption effect to the intercommunication board equally, further prevent that the intercommunication board from closing, in addition, the air of the intercommunication board opposite side is rarefaction, help reducing the noise that produces when the cubical switchboard operation.

Preferably, the driving piece is arranged as a second motor, and an output shaft of the second motor is connected with an impeller shaft of the second fan.

By adopting the technical scheme, the second motor is operated, and the operation of the second fan can be realized.

Preferably, the driving piece is set to a first motor, the first motor is a double-shaft servo motor, a first shaft of the double-shaft servo motor is connected with a first fan, a second shaft of the double-shaft servo motor is connected with a second fan, and two shafts of the double-shaft servo motor are respectively provided with a unidirectional rotation component for driving the corresponding fan to perform unidirectional rotation.

Through adopting above-mentioned technical scheme, when biax servo motor corotation (or reversal), drive first fan operation, the second fan is not operated this moment, realizes heating dehumidification operation, when biax servo motor reversal (or reversal), drive the operation of second fan, first fan is not operated, realizes the heat dissipation operation.

Preferably, the unidirectional rotation assembly comprises a ratchet wheel and a pawl, wherein one ratchet wheel is coaxially fixed with a first shaft of the double-shaft servo motor, the other ratchet wheel is coaxially fixed with a second shaft of the double-shaft servo motor, connecting plates are fixedly arranged on an impeller shaft of the first fan and an impeller shaft of the second fan, the pawl is hinged to the corresponding connecting plates, the pawl is in unidirectional engagement with the corresponding ratchet wheel, and the engagement directions of the two pawls are opposite.

By adopting the technical scheme, when the double-shaft servo motor rotates forward (or rotates reversely), the ratchet wheel and the pawl at the first fan side are meshed, so that the operation of the first fan is realized; when the double-shaft servo motor rotates reversely (or rotates positively), the ratchet wheel and the pawl at the side of the second fan are meshed, and then the operation of the second fan is realized.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the interior area and the dehumidification space of the ventilation pipe transformer are utilized, the first fan pumps hot air in the transformer into the dehumidification space, heat is transferred into the installation space through the liner, heating and dehumidification operation of the switch cabinet is realized, waste heat in the transformer is effectively utilized, and energy consumption is greatly reduced;

2. by means of the radiating pipe, the second fan is operated to pump away hot air in the installation space, so that radiating operation is realized, and in the process, partial space in the dehumidifying space forms vacuum, so that certain noise of the switch cabinet is reduced; and at the moment, the first switch valve is opened, so that heat dissipation operation can be performed in the transformer at the same time;

3. the two shafts of the double-shaft servo motor are connected with the corresponding fans through ratchet wheel pawl structures, namely, the forward and reverse rotation of the double-shaft servo motor can respectively realize the operation of the first fan and the second fan.

Drawings

FIG. 1 is a schematic overall structure of a first embodiment of the present application;

fig. 2 is a schematic overall structure of a second embodiment of the present application;

fig. 3 is a schematic structural diagram of a unidirectional rotation assembly in a second embodiment of the present application.

Reference numerals: 1. a transformer; 11. a housing; 2. a switch cabinet; 3. a cabinet body; 31. an inner container; 311. a communication port; 312. a communication plate; 32. an air inlet; 33. an air outlet; 34. a one-way exhaust valve; 4. dehumidifying space; 5. an installation space; 6. a ventilation pipe; 61. a first switching valve; 7. an air draft assembly; 71. a first fan; 72. a first motor; 8. a heat radiating pipe; 81. a second fan; 82. a driving member; 83. a second switching valve; 9. a communicating pipe; 91. a third switching valve; 10. a connecting pipe; 20. a unidirectional rotating assembly; 201. a ratchet wheel; 202. a pawl; 30. and (5) connecting a plate.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses an environment-friendly energy-saving transformer substation.

Example 1

Referring to fig. 1, an environment-friendly energy-saving transformer substation comprises a transformer 1 and a switch cabinet 2, wherein a shell 11 is installed on the outer side of the transformer 1, the switch cabinet 2 comprises a cabinet body 3, an inner container 31 is installed in the cabinet body 3, the inner container 31 is made of a heat-conducting material, aluminum metal can be used as a base material in the application, a dehumidifying space 4 is formed between the cabinet body 3 and the inner container 31, and an installation space 5 for installing components is formed inside the inner container 31; a ventilation pipe 6 is communicated between the shell 11 and the cabinet 3, one end of the ventilation pipe 6 is communicated with the inner area of the shell 11, the other end of the ventilation pipe 6 is communicated with the dehumidifying space 4, and an air draft assembly 7 is arranged on the ventilation pipe 6 and used for sucking hot air in the shell 11 into the dehumidifying space 4; the air draft assembly 7 comprises a first fan 71 and a first motor 72, the first fan 71 is arranged on the ventilation pipe 6, an air inlet 32 of the first fan 71 is positioned at one side close to the shell 11, an air outlet 33 of the first fan 71 is positioned at one side close to the cabinet 3, and an output shaft of the first motor 72 is connected with an impeller shaft of the first fan 71; an air inlet 32 and an air outlet 33 are formed in the cabinet body 3, the air inlet 32 and the air outlet 33 are communicated with the dehumidifying space 4, the ventilation pipe 6 is communicated with the air inlet 32, and a one-way exhaust valve 34 is arranged at the position of the cabinet body 3 at the air outlet 33.

During the working process of the transformer substation, a large amount of hot air is generated in the transformer 1, the first motor 72 drives the first fan 71 to operate, so that heat in the transformer 1 can be pumped into the dehumidifying space 4 in a hot air mode, and then the heat is transferred into the installation space 5 through the liner 31, so that the heating and dehumidifying operation of the switch cabinet 2 is realized. By the mode, waste heat generated by the transformer 1 is effectively utilized, and the loss of energy consumption is greatly reduced; in addition, even if the first fan 71 and the first motor 72 are damaged, the first fan 71 and the first motor 72 can be directly maintained and replaced without power failure because the first fan 71 and the first motor 72 are outside; and even when the first fan 71 or the first motor 72 is damaged, the hot air in the shell 11 gradually permeates into the dehumidifying space 4 from the ventilation pipe 6, so that the heating and dehumidifying functions can be temporarily realized, on one hand, the situation that the switch cabinet 2 is wet tripped due to equipment failure can be avoided, and on the other hand, the labor and cost of manual inspection are reduced.

The cabinet body 3 is also provided with a radiating pipe 8, one end of the radiating pipe 8 is communicated with the installation space 5, the other end of the radiating pipe 8 is communicated with the outside air, the inner container 31 is provided with a communicating pipe 9 communicated with the outside, and the communicating pipe 9 is connected with the lower side of the inner container 31. The radiating pipe 8 is provided with a second fan 81 and a driving piece for driving the second fan 81 to operate, and the driving piece is set as a second motor 82.

The second motor 82 drives the second fan 81 to operate, and hot air in the installation space 5 is pumped to the outside, so that heat dissipation operation in the installation space 5 can be realized.

The first switch valve 61 is installed on the ventilation pipe 6, the second switch valve 83 is installed on the radiating pipe 8, under the moist condition, the first switch valve 61 is opened, the second switch valve 83 is closed, the first fan 71 is operated to realize dehumidification heating operation, under the hot environment, the first switch valve 61 is closed, the second switch valve 83 is opened, and heat dissipation operation in the installation space 5 can be realized.

The implementation principle of the environment-friendly energy-saving transformer substation is as follows: the heat generated in the transformer 1 is used as the energy for heating and dehumidifying the switch cabinet 2, so that the waste heat is effectively utilized, the maximum utilization of resources is realized, and the energy consumption is reduced; the heater can not be installed in the switch cabinet 2, the risk of power-off maintenance does not exist, the first fan 71 and the first motor 72 are both positioned on the outer side of the switch cabinet 2, and the maintenance and the replacement are convenient; the ventilation pipe 6 is utilized to enable the inner area of the shell 11 to be communicated with the dehumidifying space 4, even if the first fan 71 is damaged and does not operate, hot air continuously permeates into the dehumidifying space 4 from the ventilation pipe 6, the effect of heating and dehumidifying is continuously achieved, and the phenomenon of tripping caused by humidity in the switch cabinet 2 can be avoided as much as possible although the effect is relatively poor.

Example 2

Referring to fig. 2 and 3, this embodiment is different from embodiment 1 in that one end of the radiating pipe 8 close to the cabinet 3 is communicated with the dehumidifying space 4, and the radiating pipe 8 is connected to the side wall of the cabinet 3, the top side of the liner 31 is provided with a communication opening 311, and the liner 31 is hinged with a communication plate 312 at the communication opening 311, when the communication plate 312 is opened, the opening of the communication plate 312 faces the radiating pipe 8, and the communication opening 311 enables the dehumidifying space 4 to be communicated with the mounting space 5, i.e. the radiating pipe 8 is communicated with the mounting space 5. A third on-off valve 91 is mounted on the communication pipe 9.

In the initial state, the communication plate 312 closes the communication port 311 under the action of gravity, when the second fan 81 operates, air in the dehumidifying space 4 is preferentially pumped away, short-term vacuum negative pressure is formed in the dehumidifying space 4, the air expands due to gradual temperature rise in the mounting space 5, and the communication plate 312 rotates under the negative pressure cooperation in the dehumidifying space 4, so that the communication port 311 is opened, and hot air in the mounting space 5 is discharged from the radiating pipe 8 along with the communication port 311, so that the radiating operation of the switch cabinet 2 is realized; after that, the third switch valve 91 is opened, the outside air enters the switch cabinet 2, and on the one hand, the inside of the installation space 5 is supplemented with air pressure, the communication plate 312 is prevented from being closed, and the outside air enters the installation space 5 from below, so that ventilation and cooling of the installation space 5 are realized.

When the hot air in the installation space 5 is extracted, the internal air pressure is reduced, and the third switch valve 91 is opened at this time, so that the internal air pressure is increased, and the open state of the communication plate 312 is ensured; in the process of air extraction, the air flows from the communication port 311 directly into the radiating pipe 8, and in the flow channel between the back side of the communication plate 312 and the radiating pipe 8, the air is thin and is approximately vacuum, i.e. the air pressures at the two sides of the communication plate 312 are different, so that the communication plate 312 is always in an open state.

The space of the flow channel which is similar to the vacuum is far more than the space where the gas flows, which is helpful for improving the heat dissipation rate; during the operation of the switch cabinet 2, noise is generated, and noise pollution can be effectively reduced by utilizing the region which is approximately vacuum in the dehumidifying space 4.

The ventilation pipe 6 and the radiating pipe 8 are communicated through a connecting pipe 10, the first switch valve 61 is positioned at one side of the connecting pipe 10 close to the first fan 71, and the second switch valve 83 is positioned at one side of the connecting pipe 10 close to the second fan 81. When heating and dehumidifying, the first switch valve 61 is opened, the second switch valve 83 is closed, and hot air in the shell 11 of the transformer 1 can enter the dehumidifying space 4 to realize heating and dehumidifying operation; when the heat dissipation operation is performed, the first switch valve 61 is closed, the second switch valve 83 is opened, the second fan 81 is operated, and the communication plate 312 is opened under the action of air pressure, so that the heat dissipation operation is realized; in addition, when the heat dissipation operation is performed, the first switch valve 61 can be opened at the same time, and at this time, the second fan 81 can also pump away the hot air inside the transformer 1, so as to realize the simultaneous heat dissipation of the switch cabinet 2 and the transformer 1.

The driving piece is set to be a first motor 72, in this embodiment, the first motor 72 is set to be a double-shaft servo motor, a first shaft of the double-shaft servo motor is connected with a first fan 71, a second shaft is connected with a second fan 81, and two shafts of the double-shaft servo motor both drive corresponding fans to rotate unidirectionally through the unidirectional rotation assembly 20.

Since the structure and principle of the two unidirectional rotating assemblies 20 are identical, the connection of the first shaft of the biaxial servomotor and the first fan 71 will now be described as an example. The unidirectional rotation assembly 20 comprises a ratchet 201 and a pawl 202, the ratchet 201 is coaxially fixed on a first shaft of the double-shaft servo motor, an impeller shaft of the first fan 71 extends out, a connecting plate 30 is coaxially fixed on the impeller shaft, the pawl 202 is hinged on the connecting plate 30, and unidirectional rotation of the first fan 71 can be achieved through cooperation of the ratchet 201 and the pawl 202. When the biaxial servo motor rotates forward (or reverse), the ratchet 201 and the pawl 202 on the first fan 71 side are engaged, and the operation of the first fan 71 is realized. Similarly, when the biaxial servo motor rotates reversely (or positively), the ratchet 201 and the pawl 202 on the second fan 81 side are engaged, and the operation of the second fan 81 is realized. That is, with one driving source, the respective rotations of the first blower 71 and the second blower 81 are realized.

In practice, a humidity sensor and a temperature sensor are installed in the installation space 5 of the cabinet body 3, when the humidity reaches a certain value, a signal is transmitted to a controller, and the controller controls the first motor 72 to operate so as to drive the first fan 71 to operate, and then heating and dehumidifying operations are performed; when the temperature reaches a certain value, a signal is transmitted to the controller, and the controller controls the first motor 72 to operate and drives the second fan 81 to operate so as to perform heat dissipation operation.

The implementation principle of the embodiment 2 is as follows: the first switch valve 61 is opened, the second switch valve 83 and the third switch valve 91 are closed, the double-shaft servo motor drives the first fan 71 to operate, and heat generated by the transformer 1 is introduced into the dehumidification space 4, so that heating and dehumidification of the switch cabinet 2 can be realized.

The second switch valve 83 is opened, the first switch valve 61 and the third switch valve 91 are closed, the double-shaft servo motor drives the second fan 81 to operate, air in the dehumidifying space 4 is pumped away to form vacuum, at the moment, under the synchronous action of negative pressure of the dehumidifying space 4 and thermal expansion in the installation space 5, the communication plate 312 rotates to be opened, heat dissipation operation in the installation space 5 is achieved, after a period of time, the third switch valve 91 is opened, external air enters the installation space 5 to supplement air pressure, the communication plate 312 is prevented from being closed, and the space between the opening side of the communication plate 312 and the heat dissipation pipe 8 is approximately vacuum, suction is generated for the communication plate 312 on one hand, the opening state of the communication plate 312 is guaranteed, and on the other hand, a certain elimination effect on noise of the switch cabinet 2 can be achieved; the communicating pipe 9 is arranged at the lower side of the liner 31, and the cooling air of the external air can cool the installation space 5 from bottom to top, thereby being beneficial to improving the heat dissipation and cooling effects on the installation space 5; in addition, the first switch valve 61 can be opened, the ventilation pipe 6 is communicated with the radiating pipe 8, and the radiating effect on the transformer 1 can be realized under the action of the second fan 81.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. An environmental protection and energy saving transformer substation, its characterized in that: including transformer (1) and cubical switchboard (2), transformer (1) includes casing (11), cubical switchboard (2) are including cabinet body (3), cabinet body (3) are formed with dehumidification space (4) and installation space (5) that are used for installing components and parts by outside-in proper order, be provided with ventilation pipe (6) between casing (11) and cabinet body (3) for intercommunication casing (11) inner region and dehumidification space (4), be provided with on ventilation pipe (6) and be used for taking out the exhaust subassembly (7) of dehumidification space (4) with the interior steam of casing (11).

2. An environmental protection and energy saving transformer substation according to claim 1, characterized in that: the air draft assembly (7) comprises a first fan (71) and a first motor (72) for driving the first fan (71) to rotate, an air inlet (32) of the first fan (71) is located at one side close to the shell (11), and an air outlet (33) of the first fan (71) is located at one side close to the cabinet body (3).

3. An environmental protection and energy saving transformer substation according to claim 2, characterized in that: be provided with inner bag (31) in the cabinet body (3), inner bag (31) are heat conduction material, installation space (5) are located inner bag (31), dehumidification space (4) are located between the cabinet body (3) and inner bag (31), air intake (32) and air outlet (33) have been seted up on the cabinet body (3), air intake (32) and air outlet (33) all communicate with dehumidification space (4), ventilation pipe (6) communicate with air intake (32), cabinet body (3) are located air outlet (33) department and are provided with one-way discharge valve (34).

4. An environmental protection and energy saving transformer substation according to claim 3, characterized in that: the novel cabinet is characterized in that the cabinet body (3) is communicated with a radiating pipe (8), the radiating pipe (8) is communicated with the installation space (5), one end, away from the cabinet body (3), of the radiating pipe (8) is communicated with the outside air, a second fan (81) and a driving piece for driving the second fan (81) to rotate are arranged on the radiating pipe (8), and a communicating pipe (9) communicated with the outside air is arranged on the liner (31).

5. An environmental protection and energy saving transformer substation according to claim 4, characterized in that: the communicating pipe (9) is arranged at the lower side of the inner container (31).

6. An environmental protection and energy saving transformer substation according to claim 4, characterized in that: the novel cooling device is characterized in that the ventilation pipe (6) is communicated with the cooling pipe (8) through a connecting pipe (10), a first switch valve (61) is arranged on one side, close to the first fan (71), of the connecting pipe (10), and a second switch valve (83) is arranged on one side, close to the second fan (81), of the cooling pipe (8), of the connecting pipe (10).

7. An environmental protection and energy saving transformer substation according to claim 4, characterized in that: the cooling tube (8) is close to the one end and the dehumidification space (4) intercommunication of the cabinet body (3), just cooling tube (8) are connected at the lateral wall of the cabinet body (3), communication port (311) have been seted up to the top side of inner bag (31), inner bag (31) are located communication port (311) department and articulate have intercommunication board (312), works as when intercommunication board (312) are opened, the opening of intercommunication board (312) is towards cooling tube (8), install third ooff valve (91) on communicating pipe (9).

8. An environmental protection and energy saving transformer substation according to claim 4, characterized in that: the driving piece is arranged as a second motor (82), and an output shaft of the second motor (82) is connected with an impeller shaft of the second fan (81).

9. An environmental protection and energy saving transformer substation according to claim 4, characterized in that: the driving piece (82) is set to be a first motor (72), the first motor (72) is a double-shaft servo motor, a first shaft of the double-shaft servo motor is connected with a first fan (71), a second shaft of the double-shaft servo motor is connected with a second fan (81), and two shafts of the double-shaft servo motor are respectively provided with a unidirectional rotation component (20) for driving the corresponding fan to rotate in a unidirectional mode.

10. An environmental protection and energy saving transformer substation according to claim 9, characterized in that: the unidirectional rotating assembly (20) comprises a ratchet wheel (201) and a pawl (202), wherein one ratchet wheel (201) is coaxially fixed with a first shaft of the double-shaft servo motor, the other ratchet wheel (201) is coaxially fixed with a second shaft of the double-shaft servo motor, connecting plates (30) are fixedly arranged on impeller shafts of the first fan (71) and the second fan (81), the pawl (202) is hinged to the corresponding connecting plates (30), the pawl (202) is in unidirectional engagement with the corresponding ratchet wheel (201), and the engagement directions of the two pawls (202) are opposite.