CN113161877B

CN113161877B - Flange rainproof device

Info

Publication number: CN113161877B
Application number: CN202110275094.3A
Authority: CN
Inventors: 曾凡威; 肖洋; 张友刚; 余广译; 刘专红; 王康翔
Original assignee: Shenzhen Power Supply Bureau Co Ltd
Current assignee: Shenzhen Power Supply Bureau Co Ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2023-03-03
Anticipated expiration: 2041-03-15
Also published as: CN113161877A

Abstract

The invention relates to a flange rainproof device which is suitable for covering a flange with an end face vertically placed. The flange rain insensitive device covers and establishes in the perpendicular flange top of placing of terminal surface, establishes the rain-proof cap and the rain-proof eaves in the flange top through covering and guides the rainwater to the position of keeping away from the flange to avoid the rainwater to corrode the flange, carry out effectual protection to the flange, be favorable to improving the life of flange, reduce cost.

Description

Flange rainproof device

Technical Field

The invention relates to the technical field of power equipment, in particular to a flange rainproof device.

Background

The Gas Insulated totally-enclosed switchgear (Gas Insulated switchgear, referred to as GIS for short) is a high-voltage electrical equipment widely used in power systems, and the GIS equipment has the advantages of compact structure, small occupied area, high operation reliability, less maintenance work, long overhaul period and the like, is increasingly applied to power grids, and most of newly-produced substations in recent years mainly use GIS equipment.

In the early GIS equipment, due to the consideration of cost, iron materials are cheaper than aluminum materials, so more metal flanges are made of iron materials, but because the influence of external environment is less considered in the treatment of the metal butt joint flange surface, except for the sealing by two rubber rings (wherein the inner ring is sealed and the outer ring is waterproof) when the flanges are butted, only one layer of antirust oil or other waterproof materials is simply coated on the periphery of the outer waterproof rubber ring or no treatment is carried out. However, in the southern rainy region, the influence of rainwater is serious, especially for outdoor GIS equipment, the flange surface of iron materials is rusted seriously due to the year-round corrosion, even some of the flange surface corrodes to the inner-layer sealing ring, so that the aging of the sealing rubber ring is accelerated, the sealing performance of the sealing rubber ring is seriously influenced, the SF6 gas leakage is quicker, and the SF6 leakage condition of the outdoor equipment is more serious than that of indoor equipment in terms of actual operation conditions; when viewed from the flange surface disassembled from the maintenance equipment, the periphery is basically completely rusted, so that unsafe hidden danger is caused to the stable operation of the equipment if the problem that the metal flange is influenced by rainwater is not solved.

The maintenance period of the flange surface is too long, the cost is too high, and the power failure problem of GIS equipment is also solved, at present, a simple peripheral treatment mode is adopted, namely waterproof glue is smeared on the flange surface to prevent rainwater erosion, and on new operation equipment, except for the peripheral smearing of the waterproof glue, the waterproof glue is injected into glue injection holes on the periphery of a waterproof rubber ring of the flange surface to increase a layer of waterproof protection. The problem that the metal flange face is corroded and rusted by rainwater is improved to a certain extent by the two treatment modes, however, the service life of common waterproof glue is short, ageing, dry cracking and the like appear in one to two years generally, the flange face is still led to water inflow after the service life is long, the waterproof glue is injected into the flange face through the glue injection holes, and due to the fact that the space is narrow and small, the problem of glue injection uniformity is solved, the waterproof glue can be injected into all the peripheral regions of the flange face, and therefore rainwater can enter the flange face.

Disclosure of Invention

In view of the above, it is necessary to provide a flange rain protection device.

The utility model provides a flange rain insensitive device, is suitable for to cover and establishes the flange that the terminal surface is vertical placing, a serial communication port, including rain-proof cap and the rain-proof eaves, rain-proof cap includes the roof and reaches the both sides board of being connected with the roof, the roof is the arc along flange circumference and extends, both sides board is located flange terminal surface both sides, the rain-proof eaves is located rain-proof cap tip and extends towards the direction that deviates from rain-proof cap.

Above-mentioned flange rain insensitive device covers establishes in the perpendicular flange top of placing of terminal surface, establishes the rain-proof cap and prevents that the rain eaves in flange top guides the rainwater to the position of keeping away from the flange through the cover to avoid rainwater to corrode the flange, carry out effectual protection to the flange, be favorable to improving the life of flange, reduce cost.

In one embodiment, an included angle between a connecting line from the end part of the rain hat to the center of the flange and the horizontal plane of the center of the flange is alpha, and the alpha angle is 45-60 degrees.

In one embodiment, the rain protection eaves extend away from the rain hat to completely cover the outer diameter of the flange.

In one embodiment, the side plate comprises a mounting portion and an extending portion, the mounting portion is connected with the top plate, and the extending portion extends in a direction away from the end face of the flange.

In one embodiment, the periphery of the flange extends upwards obliquely and is provided with a grounding bar; the flange rainproof device further comprises a connecting piece, the connecting piece penetrates through the two side plates from the position below the grounding bar and between the peripheries of the flanges, and part of the connecting piece is clamped below the corresponding grounding bar.

In one embodiment, the connecting piece comprises a stud and a nut, the head of the stud penetrates through one side plate and penetrates out of the other side plate, and the nut is sleeved on the bolt through the head of the bolt and is tightly attached to the other side plate.

In one embodiment, the side plates are provided with mounting holes for the connecting piece to pass through, and the mounting holes on the two side plates are respectively and correspondingly arranged.

In one embodiment, two mounting holes are formed in each side plate, and the mounting holes are symmetrically distributed at two ends of each side plate.

In one embodiment, a rain-proof foot rest is arranged above the mounting hole.

In one embodiment, the end part of the rain-proof eave is provided with a water baffle plate, and the water baffle plate extends towards the axial direction close to the flange.

Drawings

FIG. 1 is a schematic view of installation of a flanged rain protection device;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 isbase:Sub>A sectional view taken along line A-A;

FIG. 5 is an enlarged view of portion C of FIG. 4;

FIG. 6 is a left side view B-B in cross section;

FIG. 7 is an enlarged view of portion D of FIG. 6;

FIG. 8 is a schematic view of a rain guard with extensions;

fig. 9 is a schematic view of a flashing device provided with a water deflector.

The meaning of the reference symbols in the drawings is:

100-a rain-proof device; rain-proof hat-110; 111-top plate; 112-side plate; 1121-mounting part; 1122-an extension; 1123-mounting holes; 113-an end portion; 120-rain-proof eaves; 121-a water baffle; 130-a connector; 140-rain-proof foot rest; 200-a flange; 210-end face; 220-a screw; 230-ground bar; 231-left ground bar; 232-right ground bar; 240-ground bar.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 9, a flange rain protection device 100 according to an embodiment of the present invention is adapted to cover a flange 200 with an end face 210 vertically disposed, and the flange 200 is fixedly connected to an external component through a screw 220.

Referring to fig. 1 and 3, the rain-proof device 100 is made of metal. Rain insensitive device 100 includes rain-proof cap 110 and rain-proof eaves 120, rain-proof cap 110 includes roof 111 and the both sides board 112 of being connected with roof 111, roof 111 is the arc along flange 200 circumference and extends, and the relative both sides of roof 111 are located respectively to two curb boards 112, both sides board 112 is located flange terminal surface 210 both sides, the tip that rain-proof eaves 120 is located rain-proof cap 120 and extends towards the direction that deviates from rain-proof cap 110, through covering rain insensitive device 100 in flange 200 top, rain-proof cap 110 and rain-proof eaves 120 guide the rainwater to the position of keeping away from flange 200 to avoid rainwater to corrode flange 200, carry out effectual protection to flange 200, be favorable to improving flange 200's life, reduce cost.

In some embodiments, the top plate 111 is welded, such as laser welded, to the side plate 112. In other embodiments, the top panel 111 is integrally formed with the side panel 112.

Referring to fig. 1 and 2, two grounding bars 240 symmetrically distributed with respect to the axis of the flange are disposed on the periphery of the flange, which is inclined upward by about 30 °, and two ends of the grounding bars 240 are connected to adjacent flanges 200. Further, the ground bar 240 is connected to the flange 200 by means of screws.

Referring to fig. 2, in order to prevent the rain guard 100 from being mounted on the flange 200 and interfering with the ground bar 240, which affects the stability of the rain guard 100 mounted on the flange 200, the angle between the connection line from the end 113 of the rain guard to the center of the flange and the horizontal plane of the flange is α, and the α angle is 45 ° to 60 °. That is to say, an included angle between a connection line from the end portion 113 of the rain hat to the center of the flange 200 and the horizontal plane of the flange 200 is greater than an included angle between a connection line from the end portion of the ground row 240 to the center of the flange 200 and the horizontal plane of the flange 200, so that after the rain hat 110 is installed on the end face 210 of the flange, the end portion 113 of the rain hat 110 is located above the ground row 240, and the rain brim 120 is connected to the end portion 113 of the rain hat 110 and extends in a direction away from the rain hat 110 to cover the upper portion of the end face 210 of the flange. In order to avoid interference with the grounding bar 240 in the extension process of the rain-proof eaves 120, the extension direction of the rain-proof eaves 120 away from the rain-proof hat 110 is parallel to the grounding bar 240, so that the extension process of the rain-proof eaves 120 is always kept at a distance from the grounding bar 240, and the stability of the rain-proof device 100 mounted above the flange 200 is ensured.

Referring again to fig. 1 and 2, further, to improve the rain protection performance of flanged rain protection device 100, the rain protection eaves 120 extend away from the rain hat 110 to completely cover the outer diameter of the flange 200, and it can be understood that the rain protection device 100 completely covers the outer diameter of the flange 200 in the vertical direction. When the flange 200 is in a rain environment, the rain-proof cap 110 and the rain-proof brim 120 cover the flange 200 to form a protective umbrella of the flange 200, so that the flange 200 is prevented from being corroded by rain water, and the service life of the flange 200 is prolonged.

Referring to fig. 8 and 9, in an embodiment, in order to prevent rainwater dropping from above the rain hat 110 and the rain brim 120 from sliding down to below the flange end face 210 and eroding the screw 220 connected to the flange 200 below the flange 200, the side plate 112 includes a mounting portion 1121 and an extending portion 1122, wherein the mounting portion 1121 is connected to the top plate 111, and the mounting portion 1121 is parallel to the end face 210 of the flange 200. The extending portion 1122 is connected to the mounting portion 1121, the extending portion 1122 extends in a direction away from the flange end surface 210, and the extending portion 1122 is perpendicular to the end surface 210 of the flange 200. When rainwater above the top plate 111 flows to the mounting portion 1121, the extension portion 1122 connected to the mounting portion 1121 guides the rainwater to a position away from the flange end surface 210. Further, even in a heavy rain environment with a large rainfall, there is a certain inertia when the rainwater slides from the top plate 111 to the extension portion 1122, and the rainwater slides to a position away from the end surface 210 under the action of the inertia of the rainwater, so that the rainwater is prevented from eroding the screws 220 below the flange end surface 210, and the service life of the flange 200 is further prolonged.

In some embodiments, one side of the mounting portion 1121 is welded, such as laser welded, to one side of the extension portion 1122. In other embodiments, the mounting portion 1121 is integrally formed with the extension portion 1122.

In the process of installing the flange rainproof device above the flange 200, the rainproof device is firstly placed above the flange end face 210, namely the top plate 111 is distributed at the periphery of the flange end face 210, the side plates 112 are positioned at the front side and the rear side of the flange end face 210, and then the angle of the rainproof cap 110 is adjusted left and right, so that the included angle between the connecting line from the end part 113 of the rainproof cap to the center of the flange and the horizontal plane of the flange is 45-60 degrees, the extending direction of the rainproof brim 120 far away from the rainproof cap 110 is parallel to the grounding bar 240, the flange rainproof device 100 is covered above the flange 200, and the flange 200 is effectively prevented from being corroded by rainwater.

Referring to fig. 6 and 7, two grounding bars 230 are disposed on the periphery of the flange 200 at an angle of 45 ° upward, and the grounding bars 230 are symmetrically distributed with respect to the axial center of the flange 200.

In order to improve the stability of the flange rain protection device 100 installed above the flange 200, the flange rain protection device 100 further comprises a connecting member 130, the connecting member 130 is arranged on the two side plates 112 in a penetrating manner from the lower side of the grounding bar 230 and the position between the peripheries of the flanges, and the part of the connecting member 130 is clamped below the corresponding grounding bar 230 so as to limit the rain protection device 100 and prevent the rain protection device 100 from shaking along the circumferential direction of the flange 200 to generate deviation. Specifically, in the perspective of fig. 6 and 7, the left grounding bar 231 prevents the link 130 from rotating to the right about the center of the flange 200, and the right grounding bar 232 prevents the link 130 from rotating to the left about the center of the flange. So, through flange 200 upper portion periphery slope two ground connection row 230 of controlling on upwards 45 upwards carry on spacingly to rain insensitive device 100, prevent connecting piece 130 around flange 200 circumferential direction, and then avoid rain-proof cap 110 and rain-proof eaves 120 to rock about flange 200 center, lie in the ground connection row 230 of connecting piece 130 top moreover and can also prevent connecting piece 130 at the ascending direction removal of perpendicular, avoid rain insensitive device to take out and drop at will in daily use.

Referring to fig. 3 to 5, in some embodiments, in order to quickly mount the connecting member 130 on the side plates 112, the connecting member 130 includes a stud and a nut cooperatively connected with the stud, after the rain hat 110 is covered over the flange 200, a head of the stud passes through one side plate 112 and out of the other side plate 112, and the nut is sleeved on the bolt through the head of the bolt and closely attached to the other side plate 112, that is, the nut is screwed on the stud, so that the mounting is convenient and the mounting speed is fast.

Further, with reference to fig. 3 to fig. 5, the side plates 112 are provided with mounting holes 1123 for the connecting member 130 to pass through, the mounting holes 1123 on the two side plates 112 are respectively correspondingly disposed, and two ends of the connecting member 130 respectively pass through the corresponding mounting holes 1123 on the two side plates 112. It is understood that the connecting member 130 passes through the two corresponding mounting holes 1123 of the two side plates 112, so that the connecting member 130 passes through the two side plates 112. Further, as shown in fig. 8, the mounting hole 1123 is provided on the mounting portion 1121 of the side plate 112.

Referring to fig. 8, in an embodiment, each side plate 112 is provided with two mounting holes 1123, and the mounting holes 1123 are symmetrically distributed at two ends of the side plate 112. When the rainproof device 100 is installed on the flange 200, the installation hole 1123 is located between the grounding bar 230 and the periphery of the flange 200 by adjusting the position of the installation hole 1123 relative to the grounding bar 230, so that the rainproof cap 110 and the rainproof brim 120 are prevented from swinging left and right around the center of the flange 200, the rainproof device 100 is covered on the flange 200 for stability, and the rainproof cap 110 can be conveniently and symmetrically distributed right above the flange 200 through the position of the installation hole 1123 relative to the grounding bar 230, so that the rainproof performance of the rainproof device 100 is improved. The connection member 130 is mounted by the outer contour of the flange 200 and the grounding bar 230 outside the flange 200, and is not directly connected or interfered with the inside of the flange 200, so that any matching structure is not required to be arranged on the flange 200, and the effects of simple use and convenient operation are achieved.

Referring to fig. 6 and 7 again, in the specific process of installing the flange 200 on the flange rain protection device 100, the rain hat 110 is firstly covered on the flange 200, then the rain hat 110 is adjusted left and right around the circumference of the flange 200 to make the installation holes 1123 on the side plates 112 located between the lower side of the grounding bar 230 and the periphery of the flange 200, and finally the connecting member 130 is passed through the corresponding installation holes 1123 on the two side plates 112, so that part of the connecting member 130 is clamped under the corresponding grounding bar 230 to limit the rain protection device 100, and the rain protection device 100 is prevented from shifting along the circumference of the flange 200.

Referring to fig. 5, 8 and 9, in order to prevent rainwater from sliding down to the upper side of the connecting member 130, and thus the rainwater corrodes the connecting member 130 to affect the stability of the rain hat 100 connected to the upper side of the flange 200, a rain foot 140 is disposed above the mounting hole 1123. Further, in order to prevent rainwater on two sides above the mounting hole from sliding down to the mounting hole, the width of the rain-proof foot rest 140 is larger than the diameter of the mounting hole 1123, and the rainwater sliding down to the upper side of the mounting hole 1123 is guided by the rain-proof foot rest 140 and then slides down to the extension portion 1122 bypassing the mounting hole 1123, so as to prevent the rainwater from eroding the connecting member 130. Specifically, the rain-proof foot rest 140 is disposed on the side plate 112, and the rain-proof foot rest 140 is disposed on the side plate 112 in various ways, such as welding the rain-proof foot rest 140 on the side plate 112, and integrally forming the rain-proof foot rest 140 and the side plate 112.

Further, in order to make the rain water sliding to the upper side of the rain-proof foot rest 140 slide to the extension portion 1122 in time, the rain-proof foot rest 140 is a rain-proof foot rest 140 with a triangular arc protruding upwards in the middle. After the rain water slides down to the rain-proof foot rest 140 above the mounting hole 1123, the rain water slides down to the extension portion 1122 in time under the guidance of the two sides of the rain-proof foot rest 140, so as to prevent the rain water from adhering to the top of the rain-proof foot rest 140, and meanwhile, in order to prolong the service life of the rain-proof foot rest 140, the rain-proof foot rest 140 is made of corrosion-resistant materials such as stainless steel.

It should be noted that there are various ways to fixedly cover the rain protection device 100 above the flange 200, for example, the rain protection device 100 is sleeved outside the flange 200, and the side plate 112 of the rain protection device 100 is in frictional contact with the flange end face 210, so that the rain protection device 100 is fixedly sleeved on the flange 200. Alternatively, the rain guard 100 is sleeved outside the flange 200, and the top plate 111 of the rain guard 100 is in contact with the grounding bar 230 on the upper portion of the flange 200, it can be understood that the rain guard 100 is erected on the grounding bar 230 on the upper portion of the flange 200, and at this time, there is a gap between the side plate 112 of the rain guard 100 and the flange end face 210, that is, the side plate 112 of the rain guard 100 is not in contact with the flange end face 210. Alternatively, the rain protection device 100 is sleeved on the flange 200, the studs of the connecting member 130 are inserted into the two side plates 112 of the rain protection device 100, and then the nuts are screwed on the studs, so that the two side plates 112 are close to each other and clamped on the two sides of the flange 200.

Specifically, in one embodiment, in order to prevent rainwater falling from the rain eaves 120 from flowing down to the adjacent flange end faces 210 under the action of inertia, the rain eaves end 113 is provided with a water baffle 121, as shown in fig. 9, and the water baffle 121 extends towards the direction close to the axis of the flange 200. After the rain water falls off the rain eaves 120, the rain water impacts the water baffle 121 of the adjacent flange rain protection device 100 under the action of self inertia, and the water baffle 121 blocks the rain water falling off the rain eaves 120 and makes the rain water fall off downwards along the water baffle 121 under the action of self gravity.

In the process of installing the flange rain protection device above the flange 200, the rain protection cover 110 is first placed above the flange end face 210, the position of the installation hole 1123 on the installation portion 1121 relative to the ground row 230 is adjusted left and right, so that the installation hole 1123 is located below the ground row 230 and between the periphery of the flange 200, and finally the connecting member 130 passes through the installation hole 1123, so that the two ends of the connecting member 130 are located below the rain protection foot rest 140, thereby fixing the flange rain protection device 100 above the flange 200.

In the specific use process of the flange rain protection device 100 installed above the flange 200, rainwater above the top plate 111 flows through the installation portion 1121 and the extension portion 1122 in the front-rear direction, the rainwater flows to a position away from the flange end face 210 under the action of self gravity, rainwater above the top plate 111 flows to the rain-proof eaves 120 in the left-right direction, rainwater sliding from the top of the rain-proof eaves 120 flows to the water baffle 121 of the adjacent flange 200 under the action of self inertia, and the rainwater slides along the water baffle 121 under the action of self gravity, so that the phenomenon that the flange 200 is corroded by the rainwater is avoided, and the normal use of the flange 200 is influenced.

The rainproof device 100 comprises a rainproof cap 110 and a rainproof brim 120, wherein the rainproof cap 110 comprises a top plate 111 and two side plates 112 connected with the top plate 111, the top plate 111 is arranged on the periphery of the flange 200, the top plate 111 extends in an arc shape along the circumferential direction of the flange 200, the two side plates 112 are arranged on two sides of the end face 210 of the flange, the rainproof brim 120 is arranged at the end part of the rainproof cap 120 and extends towards the direction away from the rainproof cap 110, the rainproof device 100 is covered above the flange 200, and the rainproof cap 110 and the rainproof brim 120 guide rainwater to the position away from the flange 200, so that the flange 200 is prevented from being corroded by the rainwater, the flange 200 is effectively protected, and the service life of the flange is prolonged. The side plate 112 includes an installation portion 1121 and an extension portion 1122 connected to the installation portion 1121, and the extension portion 1122 guides rainwater to a position away from the flange end face 210, so that rainwater dripping from the upper side of the rain hat 110 and the rain brim 120 is effectively prevented from sliding down to the lower side of the flange end face 210, and the bolt 220 connected to the flange 200 below the flange 200 is prevented from being eroded. Through the spacing below at ground connection 230 of connecting piece 130, effectively prevent rain insensitive device 100 along the circumference swing of flange 200 to produce the skew, prevent simultaneously that rain insensitive device 100 from breaking away from the flange from the top of flange 200, effectively improve the stability of flange rain insensitive device 100 installation in the flange 200 top. Through being equipped with rain-proof foot rest 140 above mounting hole 1123, effectively avoid the rainwater landing to connecting piece 130 top, lead to rainwater erosion connecting piece 130 and influence the stability that rain-proof cap 100 connects in flange 200 top.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A flange rainproof device for a GIS (geographic information system) is suitable for covering a flange with an end face vertically placed, and is characterized by comprising a rainproof cap and a rainproof eave, wherein the rainproof cap comprises a top plate and two side plates connected with the top plate, the top plate extends in an arc shape along the circumferential direction of the flange, the two side plates are positioned on two sides of the end face of the flange, the rainproof eave is positioned at the end part of the rainproof cap and extends towards the direction deviating from the rainproof cap, a grounding bar is arranged on the periphery of the flange in an inclined and upward extending manner, the flange rainproof device further comprises a connecting piece, the connecting piece penetrates through the two side plates from the position below the grounding bar and between the periphery of the flange, and part of the connecting piece is clamped below the corresponding grounding bar; an included angle between a connecting line from the end part of the rain hat to the center of the flange and the horizontal plane of the flange is larger than an included angle between a connecting line from the end part of the grounding bar to the center of the flange and the horizontal plane of the flange.

2. The flanged rain protection device of claim 1, wherein an angle between a line connecting the end of the rain cap to the center of the flange and a horizontal plane at the center of the flange is α, and the α angle is 45 ° to 60 °.

3. The flange flashing device of claim 2, wherein the flashing eaves extend away from the flashing cap to completely cover the outer diameter of the flange.

4. The flanged rain protection device of claim 1, wherein the side plates include mounting portions connected to the top plate and extending portions extending away from the end faces of the flanges.

5. The flanged rain protection device according to claim 1, wherein said connecting member comprises a stud and a nut, the head of said stud passes through one of said side plates and out of the other side plate, and the nut is sleeved on the bolt through the head of the bolt and clings to the other side plate.

6. The flanged rain protection device of claim 1, wherein the side plates are provided with mounting holes for the connecting members to pass through, and the mounting holes of the two side plates are respectively correspondingly arranged.

7. The flanged rain protection device of claim 6, wherein two mounting holes are provided on each side plate, and the mounting holes are symmetrically distributed at both ends of the side plate.

8. The flanged rain protection device of claim 6, wherein a rain foot rest is provided above the mounting hole.

9. The flanged rain protection device of claim 1, wherein the rain eaves are provided with water baffles at their ends, the water baffles extending in a direction close to the axis of the flange.