CN213922416U

CN213922416U - Prevent gaseous recovery collection device of SF6 against current

Info

Publication number: CN213922416U
Application number: CN202022706529.9U
Authority: CN
Inventors: 刘涛
Original assignee: Wuhan Chuangyi Electrical Equipment Co ltd
Current assignee: Wuhan Chuangyi Electrical Equipment Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-08-10
Anticipated expiration: 2030-11-20

Abstract

The utility model discloses a prevent gaseous recovery collection device of SF6 against current, include: the structure of the recovery box body, the mounting plate, the air duct, the collection duct, the connecting duct and the like; the upper surface of the recovery box body is fixedly provided with a mounting plate, the upper surface of the mounting plate is fixedly welded with a concentric air duct, a sealing ring with a ring structure is embedded in a hole site on the lower surface of the mounting plate, two sides of the sealing ring are vertically fixed with a hinge plate, the two hinge plates are jointly matched with two rotating shafts, a rotating pair is formed between the hinge plate and the rotating shafts, each rotating shaft is externally connected and fixed with an external rotating rod with a round rod structure, the external rotating rods are concentrically and externally embedded with a torsional spring, one end of the torsional spring is fixed on the external rotating rod through a shaft plate, and the other end of the torsional spring is fixed on the recovery box body; the utility model has the advantages that: the preparation cost of the sulfur hexafluoride is avoided from being increased due to the leakage of the sulfur hexafluoride, and the potential safety hazard caused by the leakage of the sulfur hexafluoride is also avoided.

Description

Prevent gaseous recovery collection device of SF6 against current

Technical Field

The utility model relates to the electrical apparatus field specifically is a prevent gaseous recovery collection device of SF6 against current.

Background

The SF6 (sulfur hexafluoride) gas recovery and purification charging and discharging device is used in manufacturing factories of SF6 gas insulated electrical equipment, uses departments of operation and scientific research and the like to vacuumize various electrical equipment, charge SF6 gas into the electrical equipment, recover SF6 gas from used or tested electrical equipment, and simultaneously perform purification treatment, compression and storage in a storage tank; the recovery device is suitable for SF6 electric appliances, GIS combined electric appliances and the like; the SF6 gas recovery device is based on the standard of DL/T662-1999 sulfur hexafluoride gas charging and recovery device, and comprises a recovery system, a gas charging system, a vacuum pumping system, a purification system and a gas storage system; most of recovery systems in the existing SF6 gas recovery and purification charging and discharging devices are lack of anti-reflux devices, sulfur hexafluoride leaks to increase the preparation cost of the sulfur hexafluoride, and the sulfur hexafluoride leaks to be an asphyxiant which causes dyspnea, wheezing, blue skin and mucous membrane and general spasm under high concentration, so that the addition of the anti-reflux devices to the recovery systems in the SF6 gas recovery and purification charging and discharging devices is necessary.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent gaseous recovery collection device of adverse current SF6 to solve the problem mentioned in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an anti-reflux SF6 gas recovery and collection device, comprising: the device comprises a recovery box body, a mounting plate, an air duct, a collecting barrel, a connecting barrel, a flange, a torsional spring, a rotating wheel, a fan blade, a rotating shaft, a hinge plate, a sealing ring, a base, a motor, an external rotating rod, a shaft plate, a first spring block, a fixed block, a second spring block, a side plate and a rubber layer; the recycling box body is of a prismatic table structure with a square cross section, the recycling box body is of a casing which is through from top to bottom, a square platy structure is fixed on the upper surface of the recycling box body to form a mounting plate, a concentric air duct is fixed on the upper surface of the mounting plate in a welded mode, the air duct is of a circular cylindrical structure, hole sites which are the same in diameter as the inner diameter of the air duct and are concentric with the inner diameter of the air duct are arranged on the mounting plate, a collecting tube with a tapered structure and a narrow top and wide bottom is fixed on the upper surface of the air duct through bolts, a connecting tube with a cylindrical structure is fixed above the collecting tube, a flange with a ring structure is arranged on the connecting tube, a base with a T-shaped cross section is fixed in the air duct in a welded or bolt fixing mode, a motor is fixed on the base through bolts, the output shaft and the air duct of the motor are coaxial, a rotating wheel with a disc structure is fixed on the output shaft of the motor through a clamping key, and at least eight groups of fan blades are arranged on the rotating wheel in a circumferential array, the fan blades and the rotating wheel form a same rotation angle, a sealing ring with a ring structure is embedded in a hole position of the lower surface of the mounting plate, two hinge plates are vertically fixed on two sides of the sealing ring, two rotating shafts are matched on the two hinge plates together, a rotating pair is formed between the hinge plates and the rotating shafts, a sealing plate with a semicircular structure is matched on each rotating shaft, the two rotating shafts respectively extend to one side surface of the recovery box body and extend out of the recovery box body, an external rotating rod with a circular rod structure is fixed on the external connection of the recovery box body, a shaft plate with a notch-shaped plate structure is fixed on the external rotating rod, a torsion spring is embedded outside the external rotating rod in a concentric manner, a plurality of groups of first spring blocks penetrate through one end of the torsion spring, the first spring blocks are fixed on the shaft plate, a fixing block with a square block structure is arranged on the non-shaft side of the recovery box body, and a second spring block with a tubular structure penetrates through the non-first spring block end of the torsion spring, the second spring block is fixed on the fixing block, and the two groups of sealing plates are tightly attached to the lower surface of the sealing ring under the action of the elastic force of the torsion spring.

Preferably, the two rotating shafts are respectively and externally embedded with a rubber layer with a rubber pipe structure, the thickness of the rubber layer is larger than one half of the gap between the two rotating shafts, so that the two rotating shafts are sealed by the two rubber layers, and the rubber layer is provided with a strip-shaped opening to facilitate the sealing plate to penetrate through the strip-shaped opening and be connected with the rotating shafts.

Preferably, four groups of baffles perpendicular to the mounting plate are arranged on the mounting plate to form a side plate.

Preferably, the mounting plate and the side plate are provided with mounting holes (the mounting holes are not shown in the figure).

Preferably, the outer diameter of the flange is larger than that of the connecting cylinder, and the flange is provided with upper and lower through holes which are circumferentially distributed.

When in use, the shaft plate tends to a stable angle under the action of the torsion spring, because the shaft plate is fixed on the rotating shaft through the external rotating rod, the sealing plate fixed on the rotating shaft has a stable angle, the angle is set to be biased to the sealing ring, the sealing plate is tightly attached to the sealing ring to form sealing, meanwhile, two rubber layers are arranged between the two rotating shafts to seal the upper space and the lower space of the sealing plate in an isolating way, the two sealing plates are connected with a working area of gas to be recovered or a cavity container containing the gas to be recovered through a flange in a sealing way, the mounting holes on the mounting plate and the side plate are used for integrally fixing the device, the recovery box body is connected with a recovery bearing container through the mounting holes on the mounting plate and the side plate or directly connected with the recovery bearing container through bolts through holes arranged below the recovery box body, when SF gas is required to be recovered, a lead is used for electrifying the motor, and the motor starts to work, the output shaft of the motor rotates to drive the rotating wheel and the fan blades to rotate, according to the aerodynamic principle, a downward negative pressure is formed above the rotating wheel and the fan blades, SF gas in a working area connected with a flange or a cavity container containing gas to be recovered begins to be absorbed, the rotating wheel and the fan blades work to blow downwards to generate wind pressure (the direction is a relative direction in the drawing and is not a reference direction with the outside when the device is actually installed), the two sealing plates rotate around the rotating shaft to be blown and opened, the SF gas absorbed by the rotation of the fan blades enters the recovery box body from a gap opened by the sealing plates and then enters a recovery bearing container connected with the recovery box body to complete the collection, the power supply of the motor is cut off after the collection is completed, the fan blades stop rotating, the wind pressure of the fan blades to the sealing plates disappears, the two sealing plates seal the upper position and the lower position of the sealing plates under the action of a torsion spring, and prevent the collected SF gas from flowing backwards, when the atmospheric pressure of SF gas department is big more and has the leakage risk, the gaseous SF that atmospheric pressure is big more can oppress the shrouding, makes it more hug closely in the sealing washer, and the leakage atmospheric pressure that also is SF gas department is big more, and the sealed degree of shrouding and sealing washer is also higher more, further prevents the gaseous countercurrent of SF.

Compared with the prior art, the beneficial effects of the utility model are that:

the sealing plate and the sealing ring are arranged, so that the sulfur hexafluoride gas recovery device has an anti-reflux function for recovering SF6 gas, the problem that sulfur hexafluoride leaks to increase the preparation cost of the sulfur hexafluoride is avoided, and potential safety hazards caused by sulfur hexafluoride leakage are also avoided.

Drawings

Fig. 1 is a schematic perspective view of an anti-reflux SF6 gas recovery and collection device.

Fig. 2 is a schematic bottom structure diagram of an anti-reflux SF6 gas recovery and collection device.

Fig. 3 is a schematic diagram of the internal structure of an anti-reflux SF6 gas recovery and collection device.

Fig. 4 is a schematic structural diagram of a torsion spring of the anti-backflow SF6 gas recovery and collection device.

Fig. 5 is a schematic diagram of a rubber layer cross-sectional structure of an anti-reflux SF6 gas recovery and collection device.

In the figure: 1. recovering the box body; 2. mounting a plate; 3. an air duct; 4. a collection cylinder; 5. a connecting cylinder; 6. a flange; 7. a torsion spring; 8. a rotating wheel; 9. a fan blade; 10. a rotating shaft; 11. hinging a plate; 12. closing the plate; 13. a seal ring; 14. a base; 15. a motor; 16. an external rotating rod; 17. a shaft plate; 18. a first spring block; 19. a fixed block; 20. a second spring block; 21 side plates; 22. a rubber layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, in an embodiment of the present invention, an anti-reflux SF6 gas recycling and collecting device includes: the device comprises a recovery box body 1, a mounting plate 2, an air duct 3, a collecting barrel 4, a connecting barrel 5, a flange 6, a torsion spring 7, a rotating wheel 8, a fan blade 9, a rotating shaft 10, a hinge plate 11, a sealing plate 12, a sealing ring 13, a base 14, a motor 15, an external rotating rod 16, a shaft plate 17, a first spring block 18, a fixed block 19, a second spring block 20, a side plate 21 and a rubber layer 22; the recycling box body 1 is of a prismatic table structure with a square cross section, the recycling box body 1 is of a vertically through shell, a square plate-shaped structure is fixed on the upper surface of the recycling box body 1 to form a mounting plate 2, a concentric air duct 3 is fixed on the upper surface of the mounting plate 2 in a welding manner, the air duct 3 is of a circular cylindrical structure, hole sites which are equal in diameter and concentric with the inner diameter of the air duct 3 are arranged on the mounting plate 2, a collecting duct 4 with a tapered structure which is narrow at the upper part and wide at the lower part is fixed on the upper surface of the air duct 3 through bolts, a connecting duct 5 with a cylindrical structure is fixed above the collecting duct 4, a flange 6 with a ring structure is arranged on the connecting duct 5, a base 14 with a T-shaped cross section is fixed in the air duct 3 in a welding or bolt fixing manner, a motor 15 is fixed on the base 14 by utilizing bolts, the output shaft of the motor 15 is coaxial with the air duct 3, and a rotating wheel 8 with a disc structure is fixed on the output shaft of the motor 15 through a clamping key, the circumference array has eight at least sets of flabellum 9 on the runner 8, be a same spiral angle between all flabellum 9 and the runner 8, the hole site department of the lower surface of mounting panel 2 embeds has a sealing washer 13 of ring structure, the both sides of sealing washer 13 are fixed with a hinge board 11 perpendicularly, two pivot boards 11 cooperate jointly to have two pivot shafts 10, form the revolute pair between hinge board 11 and the pivot shaft 10, each pivot shaft 10 cooperates with a shrouding 12 of a semicircle structure, two pivot shafts 10 extend to one of them side of retrieving box body 1 respectively, and lean out retrieving box body 1 external fixed with an external bull stick 16 of a round bar structure, external bull stick 16 is fixed with a shaft panel 17 of notch plate column structure, external bull stick 16 inlays with a torsional spring 7 with one heart outward, torsional spring 7 one end runs through has multiunit first spring piece 18, first spring piece 18 is fixed on shaft panel 17, retrieving box body 1 is equipped with the fixed block 19 of a square structure in torsional spring 7 non-shaft panel 17 side, a second spring block 20 with a tubular structure penetrates through the end, not the first spring block, 18 of the torsion spring 7, the second spring block 20 is fixed on the fixing block 19, and the two sealing plates 12 are tightly attached to the lower surface of the sealing ring 13 under the action of the elastic force of the torsion spring 7.

The two rotating shafts 10 are respectively and externally embedded with a rubber layer 22 with a rubber pipe structure, the thickness of the rubber layer 22 is larger than one half of the gap between the two rotating shafts 10, so that the two rubber layers 22 are sealed between the two rotating shafts 10, and the rubber layer 22 is provided with a strip-shaped opening to facilitate the sealing plate 12 to penetrate through the strip-shaped opening to be connected with the rotating shafts 10.

Four groups of baffles perpendicular to the mounting plate 2 are arranged on the mounting plate 2 to form a side plate 21.

The mounting plate 2 and the side plate 21 are provided with mounting holes (the mounting holes are not shown in the figure).

The outer diameter of the flange 6 is larger than that of the connecting cylinder 5, and upper and lower through holes which are circumferentially distributed are formed in the flange 6.

When in use, under the action of the torsion spring 7, the shaft plate 17 tends to a stable angle, because the shaft plate 17 is fixed on the rotating shaft 10 through the external rotating rod 16, the closing plate 12 fixed on the rotating shaft 10 has a stable angle, the angle is set to be biased to the sealing ring 13, the closing plate 12 is tightly attached to the sealing ring 13 to form sealing, meanwhile, two rubber layers 22 are arranged between the two rotating shafts 10 to seal, so that the two closing plates 12 isolate and seal the upper and lower spaces of the closing plate 12, then the flange 6 is used for sealing and connecting a working area of gas to be recovered or a chamber container containing the gas to be recovered, the mounting holes on the mounting plate 2 and the side plate 21 are used for integrally fixing the device, the recovery box body 1 is connected with a recovery bearing container through the mounting holes on the mounting plate 2 and the side plate 21, or is directly connected with the recovery bearing container through a bolt through a hole arranged below the recovery box body 1, when SF6 gas is required to be recovered, the motor 15 is electrified by using a lead, the motor 15 starts to work, the output shaft of the motor 15 rotates to drive the rotating wheel 8 and the fan blades 9 to rotate, a downward negative pressure is formed above the rotating wheel 8 and the fan blades 9 according to the aerodynamic principle, SF6 gas in a working area connected with the flange 6 or a chamber container containing gas to be recovered begins to be sucked, the rotating wheel 8 and the fan blades 9 work to blow downwards to generate wind pressure (the direction is a relative direction in the drawing and is not a reference direction with the outside during the actual installation of the device), the two seal plates 12 rotate around the rotating shaft 10 to be blown open, the SF6 gas sucked by the rotation of the fan blades 9 enters the recovery box body 1 from a gap opened by the seal plates 12 and then enters the recovery bearing container connected with the recovery box body 1 to complete the collection, the power supply of the motor 15 is cut off after the collection is completed, the rotation of the fan blades 9 stops, and the wind pressure of the fan blades 9 to the seal plates 12 disappears, the two sealing plates 12 are used for sealing the upper position and the lower position of the sealing plate 12 under the action of the torsion spring 7, collected SF6 gas is prevented from flowing backwards, when the SF6 gas pressure is larger and has leakage risk, the SF6 gas with larger gas pressure can press the sealing plate 12 to be more tightly attached to the sealing ring 13, namely, the larger the leakage gas pressure at the SF6 gas position is, the higher the sealing degree of the sealing plate 12 and the sealing ring 13 is, and the SF6 gas is further prevented from flowing backwards.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein; any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An anti-reflux SF6 gas recovery and collection device, comprising: the device comprises a recovery box body (1), a mounting plate (2), an air duct (3), a collecting barrel (4), a connecting barrel (5), a flange (6), a torsion spring (7), a rotating wheel (8), fan blades (9), a rotating shaft (10), a hinge plate (11), a sealing plate (12), a sealing ring (13), a base (14), a motor (15), an external rotating rod (16), a shaft plate (17), a first spring block (18), a fixed block (19), a second spring block (20), a side plate (21) and a rubber layer (22); the method is characterized in that: the recycling box body (1) is of a frustum pyramid structure with a square cross section, the recycling box body (1) is of a vertically through shell, a square plate-shaped structure is fixed on the upper surface of the recycling box body (1) to form a mounting plate (2), a concentric air duct (3) is fixed on the upper surface of the mounting plate (2) in a welded mode, the air duct (3) is of a circular tube-shaped structure, hole sites which are equal in diameter and concentric with the inner diameter of the air duct (3) are arranged on the mounting plate (2), a narrow-upper-lower-wide-cone-shaped-structure collecting tube (4) is fixed on the upper surface of the air duct (3) through bolts, a connecting tube (5) of a cylinder structure is fixed above the collecting tube (4), a flange (6) of a ring structure is arranged on the connecting tube (5), a base (14) with a T-shaped cross section structure is fixed in the air duct (3) through a welding or bolt fixing mode, and a motor (15) is fixed on the base (14) through bolts, the output shaft of the motor (15) and the air duct (3) are coaxial, the output shaft of the motor (15) is fixed with a rotating wheel (8) with a disc structure through a clamping key, at least eight groups of fan blades (9) are arranged on the rotating wheel (8) in a circumferential array, the same rotating angle is formed between all the fan blades (9) and the rotating wheel (8), a sealing ring (13) with a ring structure is embedded in the hole position of the lower surface of the mounting plate (2), two hinge plates (11) are vertically fixed on two sides of the sealing ring (13), two rotating shafts (10) are matched on the two hinge plates (11) together, a rotating pair is formed between the hinge plates (11) and the rotating shafts (10), a sealing plate (12) with a semi-circular structure is matched on each rotating shaft (10), the two rotating shafts (10) extend out to one side surface of the recovery box body (1) respectively, and an external rotating rod (16) with a circular rod structure is fixed on the recovery box body (1) externally is explored, the shaft plate (17) with a notch-shaped plate-shaped structure is fixed on the external rotating rod (16), a torsion spring (7) is concentrically embedded outside the external rotating rod (16), one end of the torsion spring (7) penetrates through a plurality of groups of first spring blocks (18), the first spring blocks (18) are fixed on the shaft plate (17), a fixed block (19) with a square block structure is arranged on the non-shaft plate (17) side of the torsion spring (7) in the recovery box body (1), a second spring block (20) with a tubular structure is penetrated through the non-first spring block (18) end of the torsion spring (7), the second spring block (20) is fixed on the fixed block (19), and the two groups of sealing plates (12) are tightly attached to the lower surface of the sealing ring (13) under the elastic action of the torsion spring (7).

2. The anti-reflux SF6 gas recovery and collection device as recited in claim 1, further comprising: the two rotating shafts (10) are respectively and externally embedded with a rubber layer (22) with a rubber pipe structure, the thickness of the rubber layer (22) is larger than one half of the gap between the two rotating shafts (10), and a strip-shaped opening is formed in the rubber layer (22) to facilitate the sealing plate (12) to penetrate through the strip-shaped opening and be connected with the rotating shafts (10).

3. The anti-reflux SF6 gas recovery and collection device as recited in claim 1, further comprising: four groups of baffles perpendicular to the mounting plate (2) are arranged on the mounting plate (2) to form a side plate (21).

4. The anti-reflux SF6 gas recovery and collection device as recited in claim 2, further comprising: and mounting holes are formed in the mounting plate (2) and the side plate (21).

5. The anti-reflux SF6 gas recovery and collection device as recited in claim 1, further comprising: the outer diameter of the flange (6) is larger than that of the connecting cylinder (5), and upper and lower through holes which are distributed circumferentially are formed in the flange (6).