CN220156040U - An internal dehumidification device for a substation - Google Patents

Abstract

The utility model discloses an internal dehumidifying device of a transformer substation, which comprises a cabinet body, wherein a first electric heating component is arranged in the cabinet body, an air exhaust fan is arranged at the upper end of the side surface of the cabinet body, an air inlet mechanism is arranged at the lower end of the side surface of the cabinet body, the air inlet mechanism comprises a drying box, a drying chamber is arranged in the drying box, and a drying net is arranged in the drying chamber. Through setting up first electrical heating component in the cabinet body, set up bleed fan and air inlet mechanism in the side of the cabinet body to set up the drying net in air inlet mechanism, through the work of first electrical heating component, make the unsaturated degree of vapor in the air in the cabinet body increase, the steam in the cabinet is discharged through the work of bleed fan, through air inlet mechanism, the setting of drying net, carries out drying treatment to the internal gas of external entering cabinet, reaches the purpose of internal portion dehumidification of cabinet.

Description

An internal dehumidification device for a substation

Technical field

The utility model belongs to the technical field of substation equipment, and in particular relates to an internal dehumidification device of the substation.

Background technique

The purpose of solving the moisture problem of substation power equipment (such as switch cabinets) is to reduce the humidity of the air in the substation power equipment to make the relative humidity less than or equal to 60%, and meet the environmental temperature and humidity indicators for the safe operation of high-voltage power equipment. The high-voltage chamber is relatively poorly sealed. When the ambient humidity is high and the temperature difference is large, moist air can easily enter the room along the gaps in doors and windows, cable trenches and ventilation grilles, and some moist air will enter the switch cabinet along the gaps in the cabinet body, easily causing damage to the switch cabinet. It gathers at corners and cannot be discharged, which can easily lead to safe operation accidents, especially in the rainy season and when the weather temperature is high. The current dehumidification methods for switch cabinet equipment include: 1. Installing an electric heater in the cabinet to heat the inside of the equipment. By increasing the temperature inside the cabinet, the relative humidity in the cabinet is reduced. 2. Install moisture repellent in the cabinet, hang silica gel bags or other absorbent materials inside the cabinet to absorb moisture in the cabinet. 3. Install a fan outside the cabinet to reduce the humidity inside the electrical cabinet by exchanging air with dry air from the outside through air convection. 4. Use glue to seal the incoming and outgoing cable gaps, and seal the cabinet door with sealing tape. The disadvantage of dehumidification method 1 is that it uses an electric heater to heat the inside of the equipment to solve the condensation phenomenon. However, this method cannot fundamentally eliminate condensation because this method only increases the amount of condensation in the air. The degree of unsaturation of water vapor does not discharge the water vapor in the cabinet; for dehumidification method 3, the disadvantage lies in the use of a fan to exchange dry air with the outside through air convection to reduce the humidity inside the electrical cabinet. When the ambient humidity is high, the dehumidification effect is very small, and it is easy for dust and dirt to enter, making it difficult to achieve the purpose of dehumidification.

Utility model content

In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an internal dehumidification device for a substation to solve the technical problems raised in the background technology.

The utility model provides the following technical solutions:

An internal dehumidification device for a substation, including a cabinet. The inner wall of the cabinet is provided with a first electric heating component. The upper end of the side of the cabinet is provided with an exhaust fan. The lower end of the side of the cabinet is provided with an inlet fan. The air inlet mechanism includes a drying box. The drying box is in the shape of a hollow rectangular parallelepiped. The interior of the drying box is divided into three parts along its length direction. The middle part of the drying box is a drying chamber. The inside of the box is located on the left side of the drying chamber and is the first dehumidification chamber. The inside of the drying box is located on the right side of the drying chamber and is the second dehumidification chamber. The drying chamber is equipped with a drying net. The upper end surface of the drying box is provided with a The drying net is a displacement component that reciprocates along the length direction of the drying box. The first dehumidification chamber and the second dehumidification chamber are respectively provided with second electric heating components.

Preferably, a second air inlet pipe is provided on a side of the drying box close to the cabinet, and an end of the second air inlet pipe away from the cabinet penetrates the side of the drying box and communicates with the drying chamber.

Preferably, a first air inlet pipe is provided on a side of the drying box away from the cabinet, and an end of the first air inlet pipe close to the cabinet passes through the side of the drying box and communicates with the drying chamber.

Preferably, a filter is coaxially provided at one end of the first air inlet pipe away from the cabinet.

Preferably, the length direction of the drying net is arranged along the length direction of the drying box, and the drying net is divided into two parts along its length direction. The drying net includes a first drying area and a second drying area. The drying area is located in the drying chamber, and the second drying area is located in the second dehumidification chamber.

Preferably, the upper end surface of the drying box is provided with an elongated opening at the drying chamber, the length direction of the elongated opening is arranged along the length direction of the drying box, and the two ends of the elongated opening respectively extend to the first Dehumidification room, second dehumidification room.

Preferably, the displacement assembly includes two vertical plates, the two vertical plates are respectively located at the front and rear sides of the upper end surface of the drying box, and a ball screw is provided between the two vertical plates. , the axis direction of the ball screw is the same as the length direction of the drying box, the two ends of the ball screw are vertically connected to the two vertical plates through bearings, and the ball screw is equipped with a ball nut block, so The lower end of the ball nut block is connected to the upper end of the drying net through a long opening, and a motor for driving the ball screw to rotate is also provided on the upper end of the drying box.

Preferably, the second electric heating component includes a ventilation hole, a second electric heating rod, and an exhaust fan. The ventilation holes are respectively located at the upper ends of the first dehumidification chamber and the second dehumidification chamber. A plurality of the second electric heating components are The rods are respectively located on the left and right inner walls of the first dehumidification chamber and the second dehumidification chamber, and the exhaust fans are respectively located on the lower sides of the first dehumidification chamber and the second dehumidification chamber.

Preferably, the first electric heating component includes a first electric heating rod, and there are multiple first electric heating rods. The plurality of first electric heating rods are respectively located on the inner side wall of the cabinet, and the The inner wall of the cabinet is provided with a protective cover at each first electric heating rod.

Preferably, the upper end of the side of the cabinet is provided with a first opening where the exhaust fan is located, the output end of the exhaust fan is connected to the outside through the first opening, and the outer side of the cabinet is located on the first opening. A rectangular baffle is provided for blocking the first opening. The upper end of the rectangular baffle is connected to the cabinet body through a hinge axis, and the hinge axis is located above the first opening.

Compared with the existing technology, this utility model has the following beneficial effects:

(1) This utility model is an internal dehumidification device for a substation. By arranging a first electric heating component in the cabinet, an exhaust fan and an air inlet mechanism are provided on the side of the cabinet, and a drying net is provided in the air inlet mechanism. The first electric heating component works to increase the degree of unsaturation of water vapor in the air in the cabinet. The water vapor in the cabinet is discharged through the work of the exhaust fan. Through the settings of the air intake mechanism and drying net, the outside world enters the cabinet. The gas inside the cabinet is dried to achieve the purpose of dehumidifying the interior of the cabinet.

(2) This utility model is an internal dehumidification device in a substation. The drying box is divided into three parts, namely the drying chamber, the first dehumidification chamber and the second dehumidification chamber. The drying net is divided into two parts, namely the first dehumidification chamber. The drying area, the second drying area, and the drying room are connected with the cabinet. Second electric heating components are respectively provided in the first dehumidification room and the second dehumidification room. When the first drying area is located in the drying room to dry the gas, the The second drying zone is located in the second dehumidification chamber, and the second drying zone is dehumidified through the second electric heating component. When the second drying zone is located in the drying chamber to dry the gas, the first drying zone is located in the first dehumidification chamber. The two electric heating components dehumidify the first drying zone and reciprocate to ensure the dryness of the drying net during drying, improve the drying efficiency of the drying net, reduce the replacement frequency of the drying net, and save manpower.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings required for the implementation are briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model. Therefore, This should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of the utility model.

Figure 2 is a schematic structural diagram of the air intake mechanism of the present utility model.

Figure 3 is a schematic diagram of the internal structure of the drying box of the present invention.

Figure 4 is a schematic diagram of the upper end face structure of the drying box of the present invention.

Figure 5 is a schematic structural diagram of the displacement component of the present utility model.

Figure 6 is a partially enlarged schematic diagram of position A in Figure 1 of the present invention.

In the picture: 1. Cabinet; 2. First electric heating component; 3. First opening; 4. Exhaust fan; 6. Air intake mechanism; 61. Drying box; 62. Drying room; 63. First dehumidification room ; 64. Second dehumidification room; 65. Drying net; 651. First drying area; 652. Second drying area; 66. First air inlet pipe; 67. Second air inlet pipe; 7. Displacement assembly; 71. Vertical plate ; 72. Ball screw; 73. Ball nut block; 74. Guide rod; 75. Motor; 8. Long opening; 91. Breathing hole; 92. Second electric heating rod; 93. Exhaust fan; 10. Rectangle Baffle; 11. Filter.

Detailed ways

In order to make the purpose, technical solutions and advantages of the implementation of the present utility model more clear, the technical solutions in the implementation of the present utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the present utility model. Obviously, the description The embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Therefore, the following detailed description of embodiments of the invention provided in the appended drawings is not intended to limit the scope of the claimed invention, but rather to represent selected embodiments of the invention. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Referring to Figures 1-6, an internal dehumidification device for a substation includes a cabinet 1. The cabinet is a switch cabinet for the substation. A first electric heating component 2 is provided on the inner wall of the cabinet 1. An exhaust fan 4 is provided at the upper end of the side of the cabinet 1, and an air inlet mechanism 6 is provided at the lower end of the side of the cabinet 1. The air inlet mechanism 6 includes a drying box 61, and the drying box 61 is in the shape of a hollow rectangular parallelepiped. , the interior of the drying box 61 is divided into three parts along its length direction. The middle part of the drying box 61 is the drying chamber 62. The inside of the drying box 61 is located on the left side of the drying chamber 62 and is the first dehumidification chamber 63. The inside of the drying box 61 is located on the right side of the drying chamber 62 and is a second dehumidification chamber 64. A drying net 65 is provided in the drying chamber 62. The upper end surface of the drying box 61 is provided with a device for keeping the drying net 65 along the length of the drying box 61. The displacement component 7 moves reciprocally in the direction, and second electric heating components are respectively provided in the first dehumidification chamber 63 and the second dehumidification chamber 64. By arranging a first electric heating component in the cabinet, setting an exhaust fan and an air inlet mechanism on the side of the cabinet, and arranging a drying net in the air inlet mechanism, the air in the cabinet is increased through the work of the first electric heating component. The degree of unsaturation of water vapor in the cabinet is exhausted through the work of the exhaust fan, and at the same time, a negative pressure is generated inside the cabinet, so that the outside air enters the cabinet through the air intake mechanism and the drying net. It is set to dry the gas entering the cabinet from the outside, so as to achieve the purpose of dehumidifying the interior of the cabinet.

A second air inlet pipe 67 is provided on a side of the drying box 61 close to the cabinet 1 . An end of the second air inlet pipe 67 away from the cabinet 1 penetrates the side of the drying box 61 and communicates with the drying chamber 62 .

A first air inlet pipe 66 is provided on a side of the drying box 61 away from the cabinet 1 . An end of the first air inlet pipe 66 close to the cabinet 1 penetrates the side of the drying box 61 and communicates with the drying chamber 62 .

A filter 11 is coaxially disposed at one end of the first air inlet pipe 66 away from the cabinet 1 . The filter 11 can filter external dust, dirt and other debris to prevent them from entering the inside of the cabinet.

The length direction of the drying net 65 is arranged along the length direction of the drying box 61. The drying net 65 is divided into two parts along its length direction. The drying net 65 includes a first drying area 651 and a second drying area 652. The first drying area 651 is located in the drying chamber 62 , and the second drying area 652 is located in the second dehumidification chamber 64 . The length of the drying net 65 is two-thirds of the length of the drying box 61 .

The upper end surface of the drying box 61 is provided with a long opening 8 at the drying chamber 62. The length direction of the long opening 8 is arranged along the length direction of the drying box 61, and both ends of the long opening 8 extend respectively. to the first dehumidification chamber 63 and the second dehumidification chamber 64.

The displacement assembly 7 includes a vertical plate 71. There are two vertical plates 71. The two vertical plates are respectively located at the front and rear sides of the upper end surface of the drying box 61. A ball wire is provided between the two vertical plates. Rod 72. The axis direction of the ball screw is the same as the length direction of the drying box 61. Both ends of the ball screw 72 are vertically connected to the two vertical plates through bearings respectively. The ball screw is adapted to have balls. Nut block 73, the lower end of the ball nut block 73 is connected to the upper end of the drying net 65 through the elongated opening 8. The upper end surface of the drying box 61 is also provided with a motor 75 for driving the ball screw to rotate. The motor 75 is a forward and reverse rotating motor.

A guide rod 74 is arranged horizontally between the two vertical plates. The axis direction of the guide rod 74 is the same as the length direction of the drying box 61. The ball nut block 73 is provided with a guide rod 74 that matches the guide rod 74. guide hole. The guide rod can further improve the stability of the ball nut block when moving.

Through the operation of the motor 75, the ball screw can be driven to rotate. The rotation of the ball screw can cause the ball nut block to move along the axis of the ball screw. The movement of the ball nut block can drive the drying net 65 to move, thereby realizing the first drying zone 651. , the second drying zone 652 is switched within the drying chamber 62 .

The second electric heating component includes a ventilation hole 91, a second electric heating rod 92, and an exhaust fan 93. The ventilation holes 91 are located at the upper ends of the first dehumidification chamber 63 and the second dehumidification chamber 64 respectively. Two electric heating rods 92 are respectively located on the left and right inner walls of the first dehumidification chamber 63 and the second dehumidification chamber 64. The exhaust fans 93 are respectively located on the lower sides of the first dehumidification chamber 63 and the second dehumidification chamber 64. By dividing the drying box into three parts, namely the drying room, the first dehumidification room, and the second dehumidification room, the drying net is equally divided into two parts, namely the first drying area and the second drying area, and the drying room and cabinet Connected, second electric heating components are respectively provided in the first dehumidification chamber and the second dehumidification chamber. When the first drying zone is located in the drying chamber to dry the gas, the second drying zone is located in the second dehumidification chamber. Through the second electric heating The component dehumidifies the second drying zone (as shown in Figure 3); when the second drying zone is located in the drying chamber to dry the gas, the first drying zone is located in the first dehumidification chamber, and the first drying zone is dehumidified through the second electric heating component. Carry out dehumidification and reciprocate to ensure the dryness of the drying net during drying, improve the drying efficiency of the drying net, reduce the replacement frequency of the drying net, and save manpower (the drying net will become wet after absorbing water, and the drying effect will be reduced. Under normal circumstances, you need to take out the drying net and dry it, and then use it after it dries).

The first electric heating component 2 includes a first electric heating rod 21. There are multiple first electric heating rods 21. The plurality of first electric heating rods 21 are respectively located on the inner side walls of the cabinet 1, and A protective cover 22 is provided on each first electric heating rod 21 on the inner wall of the cabinet.

The upper end of the side of the cabinet is located at the exhaust fan 4 and is provided with a first opening 3. The output end of the exhaust fan 4 is connected to the outside world through the first opening. The outer side of the cabinet is located at the first opening. A rectangular baffle 10 is provided for blocking the first opening. The upper end of the rectangular baffle 10 is connected to the cabinet body through a hinge axis, and the hinge axis is located above the first opening. The mass of the rectangular baffle is made of lighter material. That is, when the exhaust fan 4 works, it can blow up the rectangular baffle to a certain angle. When the dehumidification device does not work, the rectangular baffle is affected by its own gravity and is set vertically downward to block the first opening to prevent external moisture and Dust and other debris enter the cabinet.

Working principle: This utility model is an internal dehumidification device in a substation. When the cabinet needs to be dehumidified, the first electric heating component 2 works for a period of time to increase the degree of unsaturation of water vapor in the air in the cabinet, and then the exhaust fan When it starts working, the water vapor in the cabinet is discharged through the work of the exhaust fan, and at the same time, a negative pressure is generated inside the cabinet, so that the outside air enters the cabinet through the air inlet mechanism. When the external humid air enters the drying box and passes through the drying net, the drying net The first drying zone absorbs moisture in the air and dries the gas entering the cabinet from the outside. At the same time, the first drying zone is located in the second dehumidification chamber and uses the work of the second electric heating component to dry the third part of the drying net. The moisture in the second drying zone is removed; after working for a period of time, the work of the motor 75 drives the ball screw to rotate. The rotation of the ball screw causes the ball nut block to move along the axis of the ball screw, and the movement of the ball nut block drives drying. The movement of the net 65 realizes the switching of the first drying zone 651 and the second drying zone 652 in the drying chamber 62. At this time, the second drying zone 652 is located in the drying chamber to perform drying work, and the first drying zone is located in the first dehumidification chamber through the The work of the two electric heating components removes moisture in the first drying zone of the drying net.

The above are only preferred embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person familiar with the technical field can, within the technical scope disclosed by the present utility model, proceed according to the present utility model. Any equivalent substitution or change of the technical solution and its inventive concept shall be covered by the protection scope of the present utility model.

Claims (7)

1. An internal dehumidification device for a substation, including a cabinet (1), characterized in that: a first electric heating component (2) is provided on the inner wall of the cabinet (1), and An exhaust fan (4) is provided at the upper end of the side, and an air inlet mechanism (6) is provided at the lower end of the side of the cabinet (1). The air inlet mechanism (6) includes a drying box (61), and the drying box (61) 61) is in the shape of a hollow rectangular parallelepiped. The interior of the drying box (61) is divided into three parts along its length direction. The middle part of the drying box (61) is the drying chamber (62). The inside of the drying box (61) The first dehumidification room (63) is located on the left side of the drying room (62), and the second dehumidification room (64) is located on the right side of the drying room (62) inside the drying box (61). A drying net (65) is provided, and a displacement assembly (7) for reciprocating the drying net (65) along the length direction of the drying box (61) is provided on the upper end surface of the drying box (61). The first dehumidification Second electric heating components are respectively provided in the chamber (63) and the second dehumidification chamber (64). 2. An internal dehumidification device in a substation according to claim 1, characterized in that a second air inlet pipe (67) is provided on one side of the drying box (61) close to the cabinet (1), and the second air inlet pipe (67) is One end of the air inlet pipe (67) away from the cabinet (1) penetrates the side of the drying box (61) and is connected to the drying chamber (62). 3. An internal dehumidification device in a substation according to claim 2, characterized in that a first air inlet pipe (66) is provided on a side of the drying box (61) away from the cabinet (1), and the first air inlet pipe (66) is provided on the side of the drying box (61) away from the cabinet (1). One end of the air inlet pipe (66) close to the cabinet (1) penetrates the side of the drying box (61) and is connected with the drying chamber (62). 4. An internal dehumidification device in a substation according to claim 3, characterized in that a filter (11) is coaxially provided at one end of the first air inlet pipe (66) away from the cabinet (1). 5. An internal dehumidification device in a substation according to claim 1, characterized in that the length direction of the drying net (65) is arranged along the length direction of the drying box (61), and the drying net (65) is arranged along the length direction of the drying box (61). The drying net (65) is divided into two parts in the length direction. The drying net (65) includes a first drying area (651) and a second drying area (652). The first drying area (651) is located in the drying chamber (62). The second drying zone (652) is located in the second dehumidification chamber (64). 6. An internal dehumidification device in a substation according to claim 5, characterized in that an elongated opening (8) is provided on the upper end surface of the drying box (61) at the drying chamber (62), and the elongated opening (8) is The length direction of the opening (8) is arranged along the length direction of the drying box (61), and both ends of the elongated opening (8) extend to the first dehumidification chamber (63) and the second dehumidification chamber (64) respectively. 7. An internal dehumidification device in a substation according to claim 6, characterized in that the displacement component (7) includes a vertical plate (71), and there are two vertical plates (71), and the two vertical plates (71) are The vertical plates are respectively located at the front and rear sides of the upper end surface of the drying box (61). A ball screw (72) is provided between the two vertical plates. The axis direction of the ball screw is consistent with the length direction of the drying box (61). Similarly, the two ends of the ball screw (72) are vertically connected to the two vertical plates through bearings respectively. The ball screw is equipped with a ball nut block (73). The lower end of the ball nut block (73) It is connected to the upper end of the drying net (65) through the elongated opening (8), and a motor (75) for driving the ball screw to rotate is also provided on the upper end surface of the drying box (61).