Sand-proof shutter and box-type substation

Abstract

The invention relates to the field of special equipment related to doors and windows, in particular to a sand-proof shutter and a box-type substation. The sand-proof blind window comprises a blind window frame and blades, the blades are installed in the blind window frame and are of an S-shaped structure, the blades are buckled end to end, each blade comprises two vertical plates in the vertical direction and an inclined plate connected with the two vertical plates, the upper end of each blade is provided with a transverse plate and an upper inclined baffle which is connected with the transverse plate and inclines towards the lower right portion, and the lower end of each blade is provided with a lower inclined baffle which inclines towards the lower right portion. The lower ends of the blades are provided with lower inclined baffles which are connected with vertical plates at the lower ends of the blades and incline towards the lower left portion, the tail ends of the upper inclined baffles are close to the outer side of the shutter, and the tail ends of the lower inclined baffles are close to the inner side of the shutter. The sand-proof louver has a good sand-proof effect, meanwhile, ventilation of the box-type substation is guaranteed, and the reliability and safety of operation of the box-type substation are improved.

Description

Technical Field

[0001] The invention relates to the field of special equipment related to doors and windows, and in particular to a sand-proof shutter and a box-type transformer substation. Background Art

[0002] With the continuous growth of electricity demand, the application of box-type substations in power distribution systems is becoming more and more widespread. Shutters are installed on box-type substations to prevent sand and dust, but in some specific environments such as deserts, Gobi and other dusty areas, the traditional shutters on box-type substations are not ideal in preventing sand and dust. Under the action of strong winds, sand and dust can easily enter the box-type substation through the gaps in the shutter structure. The accumulation of sand and dust will affect the normal operation of the equipment, and more seriously, it may even cause electrical failures and cause safety hazards. The spacing between the blades of traditional shutters is usually large, and the structure of the blades is generally a simple flat plate structure. There is a lack of special anti-sand design, and sand and dust can easily enter the interior of the box-type substation. In order to ensure the normal operation of the box-type substation in a dusty environment, and at the same time to reduce maintenance costs and improve the stability of power supply, a shutter with good anti-sand performance is urgently needed.

[0003] The Chinese utility model patent with authorization announcement number CN205225026U disclosed a dust-proof shutter on May 11, 2016. The dust-proof shutter includes a frame and blades. The cross-section of the blades is inverted S-shaped. Two adjacent blades are interlocked end to end, and an S-shaped ventilation duct is formed between the two adjacent blades. When dust enters the shutter with the airflow, the inclined baffle at the upper end of the blade will block and rebound the dust, effectively improving the anti-sand effect of the shutter. However, the projections of the baffle ends at the head and tail ends of the two adjacent blades of the shutter are not on the same plane, and there is a directly connected flow channel. Under strong wind conditions, some dust will directly enter the substation through the flow channel. At the same time, the baffle at the upper end of the blade is a single inclined structure, and the rebound direction of the dust is in one direction, which is easy to form a sand flow. Subsequent dust will more easily enter the box-type substation under the action of airflow, and the sand-proof effect is not ideal. Summary of the invention

[0004] The object of the present invention is to provide a sand-proof shutter to solve the problem that the existing sand-proof shutter has unsatisfactory sand-proof effect in strong wind conditions.

[0005] Another object of the present invention is to provide a box-type substation to solve the problem that the sand-proof shutters on the existing box-type substations have unsatisfactory sand-proof effects under strong wind conditions.

[0006] The sand-proof shutter of the present invention adopts the following technical solutions:

[0007] The sand-proof shutter comprises a shutter frame and blades, wherein the blades are installed in the shutter frame, the blades are of an S-shaped structure, and the blades are interlocked end to end. The blades comprise two vertical plates in a vertical direction and an inclined plate connecting the two vertical plates, the upper end of the blade is provided with a horizontal plate and an upper inclined baffle connected to the horizontal plate and inclined toward the lower right, the lower end of the blade is provided with a lower inclined baffle connected to the vertical plate at the lower end of the blade and inclined toward the lower left, the end of the upper inclined baffle is close to the outer side of the shutter, and the end of the lower inclined baffle is close to the inner side of the shutter.

[0008] Furthermore, among two adjacent blades, a sand settling buffer space is formed between the lower end of the upper blade and the upper end of the lower blade, and the cross section of the sand settling buffer space is larger than the area of ​​its inlet and outlet.

[0009] Further, the vertical projections of the end of the upper inclined baffle plate and the end of the lower inclined baffle plate coincide with each other.

[0010] Furthermore, the vertical projections of the end of the upper inclined baffle plate and the end of the lower inclined baffle plate overlap at the middle of the inclined plate.

[0011] Further, the vertical projections of the end of the upper inclined baffle and the end of the lower inclined baffle intersect.

[0012] Furthermore, the shutter frame includes four side panels, and the four side panels are connected end to end to form a surrounding frame structure.

[0013] Furthermore, the four side panels are vertically installed in pairs.

[0014] Furthermore, blade mounting holes are opened on the side surfaces of the inner wall of the shutter frame, and the blades are mounted in the shutter frame through the corresponding mounting holes.

[0015] Furthermore, the shutter frame and the blades are made of galvanized sheet metal.

[0016] Beneficial effects: The sand-proof shutters of the present invention are an improved invention. The sand-proof shutters of the present invention are designed with a blade structure, and the blades adopt an S-shaped structure. An upper inclined baffle inclined to the lower right is provided at the upper end of the blade, and a lower inclined baffle inclined to the lower left is provided at the lower end of the blade. The sand and dust particles will be blocked and rebounded in two directions on the horizontal plate and the upper inclined baffle at the upper end of the blade. At the same time, there is a certain angle between the horizontal plate and the upper inclined baffle on the blade, which increases the contact area of ​​the airflow and can reduce the flow rate of the gas, thereby ensuring that the shutters of the present invention also have a good sand-proof effect under strong wind conditions. The sand-proof shutters of the present invention have a good sand-proof effect, while ensuring the ventilation of the box-type substation and improving the reliability and safety of the operation of the box-type substation.

[0017] The box-type substation of the present invention adopts the following technical solutions:

[0018] A box-type substation comprises an external box body, and the above-mentioned sand-proof shutters are installed on the external box body. The sand-proof shutters comprise a shutter frame and blades, and the blades are installed in the shutter frame. The blades are of an S-shaped structure, and the blades are interlocked end to end. The blades comprise two vertical plates in a vertical direction and an inclined plate connecting the two vertical plates. A horizontal plate and an upper inclined baffle connected to the horizontal plate and obliquely directed to the lower right are arranged at the upper end of the blade. A lower inclined baffle connected to the vertical plate at the lower end of the blade and obliquely directed to the lower left is arranged at the lower end of the blade. The end of the upper inclined baffle is close to the outer side of the shutter, and the end of the lower inclined baffle is close to the inner side of the shutter.

[0019] Furthermore, among two adjacent blades, a sand settling buffer space is formed between the lower end of the upper blade and the upper end of the lower blade, and the cross section of the sand settling buffer space is larger than the area of ​​its inlet and outlet.

[0020] Further, the vertical projections of the end of the upper inclined baffle plate and the end of the lower inclined baffle plate coincide with each other.

[0021] Furthermore, the vertical projections of the end of the upper inclined baffle plate and the end of the lower inclined baffle plate overlap at the middle of the inclined plate.

[0022] Further, the vertical projections of the end of the upper inclined baffle and the end of the lower inclined baffle intersect.

[0023] Furthermore, the shutter frame includes four side panels, and the four side panels are connected end to end to form a surrounding frame structure.

[0024] Furthermore, the four side panels are vertically installed in pairs.

[0025] Furthermore, blade mounting holes are opened on the side surfaces of the inner wall of the shutter frame, and the blades are mounted in the shutter frame through the corresponding mounting holes.

[0026] Furthermore, the shutter frame and the blades are made of galvanized sheet metal.

[0027] Beneficial effects: The box-type substation of the present invention is an improved invention. The outer box of the box-type substation of the present invention is provided with anti-sand shutters. The present invention designs the blade structure of the anti-sand shutters. An upper inclined baffle inclined to the lower right is provided at the upper end of the blade, and a lower inclined baffle inclined to the lower left is provided at the lower end of the blade. The sand and dust particles will be blocked and rebounded in two directions on the horizontal plate and the upper inclined baffle at the upper end of the blade. At the same time, there is a certain angle between the horizontal plate and the upper inclined baffle on the blade, which increases the contact area of ​​the airflow and can reduce the flow rate of the gas, thereby ensuring that the shutters of the present invention also have a good anti-sand effect under strong wind conditions. The anti-sand shutters of the present invention have a good anti-sand effect, while ensuring the ventilation of the box-type substation and improving the reliability and safety of the operation of the box-type substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A front view of an embodiment of the sand-proof shutter of the present invention;

[0029] Figure 2 The sand-proof shutter of the present invention Figure 1 A schematic diagram of the internal structure of an embodiment;

[0030] Figure 3 The sand-proof shutter of the present invention Figure 1 A top view of an embodiment;

[0031] Figure 4 The sand-proof shutter of the present invention Figure 1 Axonometric drawing of an embodiment;

[0032] Figure 5 The figure is a schematic diagram of the sand-proof principle of the sand-proof shutter of the present invention.

[0033] In the figure: 1. frame; 2. side panels of the shutter; 3. blades; 4. inlet; 5. outlet; 6. upper inclined baffle; 7. lower inclined baffle; 8. horizontal plate; 9. inclined plate; 10. upper vertical plate; 11. lower vertical plate. DETAILED DESCRIPTION

[0034] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0035] Aiming at the problem that the existing sand-proof shutters have unsatisfactory sand-proof effect when facing strong wind conditions, the present invention proposes a sand-proof shutter with better sand-proof effect.

[0036] In a basic embodiment, Figure 1-4 As shown, blades 3 are installed inside the sand-proof shutter frame. Blades 3 are S-shaped. Blades 3 include upper vertical plates 10, lower vertical plates 11 and inclined plates 9. A horizontal plate 8 is arranged on the upper vertical plate 10. The horizontal plate 8 is connected to an upper inclined baffle plate 6 inclined to the lower right. A lower inclined baffle plate 7 inclined to the lower left is arranged on the vertical plate 11. The upper inclined baffle plate 6, the lower inclined baffle plate 7 and the blades 3 are an integrated structure. Two adjacent blades 3 are linked end to end to form an S-shaped channel. A sand buffer space is formed between the upper inclined baffle plates 6 and the lower inclined baffle plates 7 at the upper and lower ends of the adjacent blades and the vertical plates 10, the horizontal plate 8 and the inclined plate 9 at the upper end of the blades. Blades 3 are welded inside the frame 1. Figure 5 As shown, when the sand and dust enter the shutter from the inlet 4 with the air flow, the sand and dust will rebound in two directions at the horizontal plate 8 and the upper inclined baffle 6 respectively, which can prevent the sand and dust from forming a sand flow. There is a certain angle between the horizontal plate 8 and the upper inclined baffle 6 to increase the contact area of ​​the airflow. When the airflow passes through the sand settling buffer space in the shutter, the speed will be reduced under the action of the horizontal plate 8 and the upper inclined baffle 6, and the sand and dust will fall out of the shutter more easily due to its own gravity, and the airflow enters the interior of the box-type substation from the outlet 5.

[0037] In a preferred embodiment, the projections of the ends of the upper inclined baffle 6 and the lower inclined baffle 7 on the blade 3 coincide with each other. When dust enters the shutter from the inlet 4 along with the airflow, the dust will rebound in two directions at the horizontal plate 8 and the upper inclined baffle 6 respectively. There is a certain angle between the horizontal plate 8 and the upper inclined baffle 6 to increase the contact area of ​​the airflow. When the airflow passes through the sand settling buffer space in the shutter, the speed will be reduced under the action of the horizontal plate 8 and the upper inclined baffle 6, and the dust will fall down and flow out of the shutter more easily due to its own gravity.

[0038] In other embodiments, the projections of the ends of the upper inclined baffle 6 and the lower inclined baffle 7 on the blade 3 intersect, the end of the lower inclined baffle 7 at the lower end of the blade 3 is closer to the inside of the shutter, and the end of the upper inclined baffle 6 is closer to the outside of the shutter. The same anti-sand effect can be achieved when sand and dust enter the sand settling buffer space of the shutter.

[0039] In a preferred embodiment, the exterior of the shutter frame is composed of four shutter side panels 2 connected end to end to form a surrounding frame structure, which improves the stability and firmness of the shutter structure.

[0040] In other embodiments, four shutter side panels 2 are vertically installed in pairs.

[0041] In a preferred embodiment, blade mounting holes are opened on the inner wall side of the shutter frame, and the blades 3 are installed in the corresponding blade mounting holes, so as to further improve the stability and firmness of the anti-sand shutter structure.

[0042] In other embodiments, the blades are welded directly into the shutter frame.

[0043] In a preferred embodiment, all sheet metal parts of the sand-proof shutters are made of galvanized sheets, which can enhance the corrosion resistance of the sand-proof shutters.

[0044] In other embodiments, the surface of the sand-proof shutter is spray-painted to enhance the corrosion resistance of the sand-proof shutter and improve the aesthetics of the sand-proof shutter.

[0045] The specific implementation of the box-type substation of the present invention is as follows:

[0046] The above-mentioned sand-proof shutters are installed on the external box body of the box-type substation. The specific implementation of the sand-proof shutters is as described above and will not be repeated here.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A sand-proof shutter, comprising a shutter frame and blades, wherein the blades are installed in the shutter frame, the blades are S-shaped, and the blades are interlocked end to end, characterized in that: The blade includes two vertical plates and an inclined plate connecting the two vertical plates. The upper end of the blade is provided with a horizontal plate and an upper inclined baffle connected to the horizontal plate and inclined to the lower right. The lower end of the blade is provided with a lower inclined baffle connected to the vertical plate at the lower end of the blade and inclined to the lower left. The end of the upper inclined baffle is close to the outside of the blinds, and the end of the lower inclined baffle is close to the inside of the blinds.

2. The sand-proof shutter according to claim 1, characterized in that: Among two adjacent blades, a sand settling buffer space is formed between the lower end of the upper blade and the upper end of the lower blade, and the cross section of the sand settling buffer space is larger than the area of ​​its inlet and outlet.

3. The sand-proof shutter according to claim 1 or 2, characterized in that: The vertical projections of the end of the upper inclined baffle plate and the end of the lower inclined baffle plate coincide with each other.

4. The sand-proof shutter according to claim 3, characterized in that: The vertical projections of the ends of the upper inclined baffle plate and the lower inclined baffle plate overlap at the middle of the inclined plate.

5. The sand-proof shutter according to claim 1 or 2, characterized in that: The vertical projections of the end of the upper inclined baffle and the end of the lower inclined baffle intersect.

6. The sand-proof shutter according to claim 1, characterized in that: The shutter frame comprises four side panels, and the four side panels are connected end to end to form a surrounding frame structure.

7. The sand-proof shutter according to claim 6, characterized in that: The four side panels are vertically installed in pairs.

8. The sand-proof shutter according to claim 1, characterized in that: The inner wall side of the shutter frame is provided with blade mounting holes, and the blades are mounted in the shutter frame through the corresponding mounting holes.

9. The sand-proof shutter according to claim 1, characterized in that: The shutter frame and blades are both made of galvanized sheets.

10. A box-type substation, comprising an external box, characterized in that: The sand-proof shutter described in any one of claims 1 to 9 is installed on the external box.

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