Louver for box-type substation
By using movable blades and repelling magnets on the shutters of the box substation, the problem of sand and dust or rainwater countercurrent during heavy wind is solved, ventilation during low wind and sealing during heavy wind is achieved, and the inside of the box is protected. Substation facilities.
Patent Information
- Application Number
- CN202420958659.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-07
AI Technical Summary
When the ventilation windows of the box-type substation are strong, the shutters fail to reverse the shutters, causing sandstorm or rainwater to flow backflow into the box and damage the substation facilities.
A blind for a box-type substation is designed, and the rotating connection between the movable blades and the window frame is used. The repulsive magnet is used to push the blades to form a gap in the low wind force to discharge hot air, and to close the gap in the high wind force to prevent external objects from entering.
It effectively prevents sand and dust or rainwater from strong winds from entering the box, protects the substation facilities, and the rotating connection of the movable blades and the design of the buffer pads improve ventilation effect and service life.
Smart Images
Figure CN222207698U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electric power engineering facilities, in particular to a shutter used in a box-type transformer substation. Background Art
[0002] Box-type substation, also known as prefabricated substation or prefabricated substation, is a high-voltage switchgear, distribution transformer and low-voltage distribution device. This equipment is integrated into one according to a certain wiring scheme, realizing factory-prefabricated indoor and outdoor compact distribution equipment. Box-type substation organically combines transformer step-down, low-voltage distribution and other functions, and is installed in a fully enclosed box that is moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, anti-theft and heat-insulated.
[0003] Ventilation windows are generally set on the box body of the box-type substation. The ventilation windows can connect the internal and external environments of the box body, and the hot air generated by the substation equipment inside the box body can be discharged through the ventilation windows. In order to achieve the function of rodent prevention, the ventilation windows of the box-type substations on the market are usually equipped with shutters. The inclined and fixed blades of the shutters can prevent small animals such as rodents from entering and play a role in preventing backflow when the external wind force is small. However, the shutters with fixed blades will lose their anti-backflow effect when the wind force is strong. The designers of our company found that when the wind force is strong, it is often accompanied by dust or heavy rain. The airflow with a faster flow rate is very likely to carry dust or rainwater backflow into the box body and damage the substation facilities in the box body. Utility Model Content
[0004] In order to solve the above problems, the utility model provides a shutter for a box-type substation.
[0005] The technical solution of the utility model is as follows:
[0006] A shutter for a box-type substation is arranged on the ventilation window of the box-type substation box body, the shutter includes a window frame and a plurality of movable blades, the shape of the window frame matches the shape of the ventilation window, and can be fixedly installed on the ventilation window, the movable blades are arranged horizontally and parallel on the inner side of the window frame, the two ends of the movable blades are rotatably connected to the inner side of the window frame, and the side of the movable blade away from the box body faces obliquely downward, the upper and lower side surfaces of the movable blades are both provided with repulsive magnets, and the lower inner side of the window frame is also provided with repulsive magnets, and the opposite surfaces of adjacent repulsive magnets have the same polarity, when there is no wind or the wind is weak, the movable blades can be repelled, so that gaps can be formed between the upper and lower adjacent movable blades, and the greater the wind force between the repulsive magnets and the outside world, the smaller the gap between the upper and lower adjacent movable blades, and when the thrust of the wind on the movable blades is greater than or equal to the repulsive force of the repulsive magnets, the gap will be completely closed.
[0007] In order to enable the movable blade to form a rotational connection with the window frame, raised rotation pins are provided at both ends of the movable blade, and a rotation groove is provided at the position where the movable blade is rotationally connected inside the window frame, and the rotation pin is rotationally connected in the rotation groove.
[0008] Furthermore, a fixing groove is provided on the side of the window frame facing the box body, and a fixing frame connected by bolts is provided in the fixing groove, the shape of the fixing frame matches the shape of the fixing groove, and the shape of the rotating groove includes the letter U shape, one open end of which is connected to the bottom surface of the fixing groove, and the fixing frame can close the opening of the rotating groove after being fixed in the fixing groove by bolts.
[0009] Furthermore, in order to ensure the smoothness of the rotational connection of the movable blade relative to the window frame and make the repulsive force of the repulsive magnet sufficient to lift the movable blade, a rotating bearing is sleeved on the rotating pin. The setting of the rotating bearing can reduce the friction between the rotating pin and the inner wall of the rotating groove.
[0010] In order to reduce the collision caused by the opening and closing of adjacent movable blades, a buffer pad is provided on the lower side of the movable blade, and the buffer pad is arranged at one end of the movable blade away from the box body.
[0011] Furthermore, the buffer pad is composed of a plurality of buffer strips, which are arranged along the length direction of the movable blades. Ventilation slots are arranged between adjacent buffer strips. The ventilation slots can enable hot air in the box to be discharged through the ventilation slots after the movable blades are fully closed.
[0012] Preferably, the thickness of the buffer pad does not exceed 2 mm, and the width of the ventilation slot does not exceed 2 mm, so as to control the cross-sectional shape and size of the ventilation slot.
[0013] Furthermore, in order to enable the upper and lower adjacent movable blades to overlap and completely close, the distance between the upper and lower adjacent rotating grooves is 2-3 mm longer than the width of the movable blades.
[0014] Preferably, in order to enable the repulsion magnet to provide sufficient repulsion force, the repulsion magnet is in the shape of a long strip and is arranged along the length direction of the movable blade.
[0015] In order to prevent the movable blade body from being affected by the repelling magnet and to reduce the weight while ensuring its structural strength, the movable blade is made of metal aluminum.
[0016] The beneficial effects of the utility model are:
[0017] The utility model discloses a shutter for a box-type substation. The shutter adopts movable blades. Compared with the fixed blades of traditional shutters, the movable blades of the shutter can rotate relative to the window frame. When the environmental wind force outside the box-type substation box is relatively small, the repulsive magnets arranged on the movable blades can lift up the upper and lower adjacent movable blades under the action of repulsive force, so that gaps are formed between the movable blades, so that hot air in the box can be discharged through the gaps between the movable blades. When the external environmental wind force is too strong, the thrust of the wind on the movable blades is greater than or equal to the repulsive force of the repulsive magnets, and the gaps between the movable blades will be closed due to the wind force, so as to prevent the strong wind from blowing dust or rainwater into the box through the gaps. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.
[0019] In the attached picture:
[0020] Figure 1 This is a structural schematic diagram of a shutter for a box-type substation according to the utility model;
[0021] Figure 2 This is a schematic diagram of the structure of the window frame of the utility model;
[0022] Figure 3 It is a partial structural schematic diagram of the shutter of the utility model in a closed state of movable blades;
[0023] Figure 4 It is a partial structural schematic diagram of the movable blades of the shutter of the utility model in the unfolded state;
[0024] Figure 5 This is a schematic diagram of the structure of the movable blades of the utility model;
[0025] The components represented by the reference numerals in the figure are:
[0026] 1. Window frame; 11. Rotating groove; 12. Fixed groove; 13. Fixed frame; 2. Movable blades; 21. Repelling magnet; 22. Rotating pin; 23. Rotating bearing; 24. Buffer pad; 25. Buffer strip; 26. Ventilation groove. DETAILED DESCRIPTION
[0027] See also Figure 1-Figure 5A shutter for a box-type substation is arranged on the ventilation window of the box-type substation box body, the shutter comprises a window frame 1 and a plurality of movable blades 2, the shape of the window frame 1 matches the shape of the ventilation window, and can be fixedly installed on the ventilation window, the movable blades 2 are arranged horizontally and parallelly on the inner side of the window frame 1, the two ends of the movable blades 2 are rotatably connected to the inner side of the window frame 1, and the side of the movable blade 2 away from the box body faces obliquely downward, the upper and lower surfaces of the movable blade 2 are both provided with repelling magnets 21, the inner lower side of the window frame 1 is also provided with a repelling magnet 21, and the adjacent repelling magnets 2 1 have the same polarity. Under the principle of like-pole magnets repelling each other, when there is no wind or the wind is weak, the movable blades 2 can be repelled so that gaps can be formed between the movable blades 2 adjacent to each other, so as to prevent small animals such as mice from entering the box and to discharge the hot air in the box. Under the repulsive force of the repelling magnets 21, the greater the external wind force, the smaller the gap between the movable blades 2 adjacent to each other. When the thrust of the wind on the movable blades 2 is greater than or equal to the repulsive force of the repelling magnets 21, the gap will be completely closed to prevent excessive wind from blowing sand or rain into the box through the gap.
[0028] See also Figure 5 In order to enable the movable blade 2 to form a rotational connection with the window frame 1, raised rotation pins 22 are provided at both ends of the movable blade 2, and a rotation groove 11 is provided at the position on the inner side of the window frame 1 where the movable blade 2 is rotationally connected. The rotation pin 22 is rotationally connected in the rotation groove 11, so that the movable blade 2 is rotationally connected to the window frame 1.
[0029] For further information, see Figure 2-Figure 4 The window frame 1 is provided with a fixing groove 12 on the side facing the box body, and a fixing frame 13 connected by bolts is provided in the fixing groove 12. The shape of the fixing frame 13 matches the shape of the fixing groove 12. The shape of the rotating groove 11 includes the letter U shape, and one open end thereof is connected to the bottom surface of the fixing groove 12. After the fixing frame 13 is fixed in the fixing groove 12 by bolts, the opening of the rotating groove 11 can be closed, thereby preventing the rotating pins 22 at both ends of the movable blade 2 from escaping from the rotating groove 11.
[0030] Furthermore, in order to ensure the smoothness of the rotation connection of the movable blade 2 relative to the window frame 1, the repulsive force of the repulsive magnet 21 is sufficient to lift the movable blade 2. Figure 2 The rotating pin 22 is sleeved with a rotating bearing 23 . The setting of the rotating bearing 23 can reduce the friction between the rotating pin 22 and the inner wall of the rotating groove 11 , thereby improving the smoothness of the rotation of the movable blade 2 .
[0031] In order to reduce the collision caused by the opening and closing of the adjacent movable blades 2, see Figure 2The lower side of the movable blade 2 is provided with a buffer pad 24, and the buffer pad 24 is arranged at one end of the movable blade 2 away from the box. The setting of the buffer pad 24 can buffer the collision of the adjacent movable blades 2 when opening and closing, and extend the working life of the movable blade 2.
[0032] Furthermore, the same buffer pad 24 is composed of a plurality of buffer strips 25, and the buffer strips 25 are arranged along the length direction of the movable blade 2. Ventilation slots 26 are arranged between adjacent buffer strips 25. The ventilation slots 26 are arranged so that the hot air in the box can be discharged through the ventilation slots 26 after the movable blade 2 is fully closed. Moreover, because the ventilation slots 26 are directed vertically downward after the movable blade 2 is fully closed, the outside wind cannot carry sand or rainwater into the box through the ventilation slots 26.
[0033] Preferably, the thickness of the buffer pad 24 does not exceed 2 mm, and the width of the ventilation slot 26 does not exceed 2 mm, so as to control the cross-sectional shape and size of the ventilation slot 26 and avoid the cross-sectional shape and size of the ventilation slot 26 being too large, so that dust or rainwater will be blown into the box through the ventilation slot 26 when the wind force is too strong.
[0034] For further information, see Figure 3 and Figure 4 In order to enable the upper and lower adjacent movable blades 2 to overlap and completely close, the distance between the upper and lower adjacent rotating grooves 11 is 2-3mm longer than the width of the movable blades 2, so that the upper and lower adjacent movable blades 2 can overlap and the movable blades 2 of the shutter can be closed when the wind is strong.
[0035] Preferably, in order to enable the repulsion magnet 21 to provide sufficient repulsion force, the repulsion magnet 21 has a shape of a long strip and is arranged along the length direction of the movable blade 2. The arrangement area of the long strip repulsion magnet 21 is large enough to provide sufficient repulsion force, thereby causing the upper and lower adjacent movable blades 2 to tilt upward.
[0036] In order to prevent the main body of the movable blade 2 from being affected by the repulsive magnet 21 and to reduce its weight while ensuring its structural strength, the movable blade 2 is made of metal aluminum. The movable blade 2 made of metal aluminum is relatively light in weight and can be lifted up by the repulsive force of the repulsive magnet 21, and its main body will not be affected by the repulsive magnet 21.
Claims
1. A shutter for a box-type substation, arranged on a ventilation window of a box-type substation box, characterized in that: The shutter comprises a window frame (1) and a plurality of movable blades (2); the shape of the window frame (1) matches the shape of the ventilation window; the movable blades (2) are arranged in parallel and transversely on the inner side of the window frame (1); both ends of the movable blades (2) are rotatably connected to the inner side of the window frame (1); the side of the movable blades (2) away from the box body faces obliquely downward; the upper and lower surfaces of the movable blades (2) are both provided with repulsive magnets (21); the lower inner side of the window frame (1) is also provided with repulsive magnets (21); and the opposite surfaces of adjacent repulsive magnets (21) have the same polarity.
2. A shutter for a box-type substation according to claim 1, characterized in that: Both ends of the movable blade (2) are provided with protruding rotation pins (22), and a rotation groove (11) is provided at a position inside the window frame (1) that is rotationally connected to the movable blade (2), and the rotation pin (22) is rotationally connected in the rotation groove (11).
3. A shutter for a box-type substation according to claim 2, characterized in that: The window frame (1) is provided with a fixing groove (12) on the side facing the box body, and a fixing frame (13) connected by bolts is provided in the fixing groove (12), and the shape of the fixing frame (13) matches the shape of the fixing groove (12), and the shape of the rotating groove (11) includes the letter U shape, and its open end is connected to the bottom surface of the fixing groove (12).
4. A shutter for a box-type substation according to claim 3, characterized in that: The rotating pin (22) is sleeved with a rotating bearing (23).
5. The shutter for a box-type substation according to claim 2, characterized in that: A buffer pad (24) is provided on the lower side of the movable blade (2), and the buffer pad (24) is arranged at an end of the movable blade (2) away from the box body.
6. The shutter for a box-type substation according to claim 5, characterized in that: The buffer pad (24) is composed of a plurality of buffer strips (25), wherein the buffer strips (25) are arranged along the length direction of the movable blade (2), and ventilation slots (26) are arranged between adjacent buffer strips (25).
7. The shutter for a box-type substation according to claim 6, characterized in that: The thickness of the buffer pad (24) does not exceed 2 mm, and the width of the ventilation slot (26) does not exceed 2 mm.
8. The shutter for a box-type substation according to claim 2, characterized in that: The distance between the upper and lower adjacent rotating grooves (11) is 2-3 mm longer than the width of the movable blade (2).
9. The shutter for a box-type substation according to claim 2, characterized in that: The repelling magnet (21) is in the shape of a long strip and is arranged along the length direction of the movable blade (2).
10. The shutter for a box-type substation according to claim 2, characterized in that: The movable blades (2) are made of metal aluminum.