CN210806570U - Dust keeper, gas circuit system and looped netowrk cabinet - Google Patents
Dust keeper, gas circuit system and looped netowrk cabinet Download PDFInfo
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- CN210806570U CN210806570U CN201922073610.5U CN201922073610U CN210806570U CN 210806570 U CN210806570 U CN 210806570U CN 201922073610 U CN201922073610 U CN 201922073610U CN 210806570 U CN210806570 U CN 210806570U
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Abstract
The utility model discloses a dust keeper, because the installation department has the gas transmission passageway that link up air inlet and gas outlet, dustproof unit mount can filter the gas that comes from the air inlet and will filter the gas after from the gas outlet discharge in gas transmission passageway. Consequently, the dust keeper that this scheme of adoption provided, the metal dust that the wearing and tearing were peeled off can be along with SF6 is gaseous from the air inlet entering gas transmission passageway after, filters the metal dust by dustproof subassembly, has prevented that the SF6 gas that has the metal dust from getting into the looped netowrk cabinet inside, has avoided bringing the hidden danger for the safe operation of SF6 looped netowrk cabinet. Furthermore, the utility model also discloses a gas circuit system and looped netowrk cabinet.
Description
Technical Field
The utility model relates to an electric power industry field especially relates to a dust keeper, gas circuit system and looped netowrk cabinet.
Background
With the development of science and technology, the power system puts higher requirements on the safety and reliability of high-voltage distribution equipment, in particular to a 10KV looped network power supply and double-radiation power supply system. For example, a medium-voltage 10kV SF6 ring main unit, due to the fact that medium SF6 gas used for breaking and insulation has excellent insulation and arc extinguishing performance, the service life and the reliability of the product are remarkably enhanced.
SF6 gas in an SF6 ring main unit is sealed in a shell poured by epoxy resin, an SF6 gas full-insulation ring main unit is switching equipment for sealing important high-voltage elements such as a bus, a circuit breaker, a disconnecting switch, a mutual inductor and the like in a stainless steel shell filled with SF6 gas with lower pressure, and an SF6 gas tank is opened and closed through a valve device so as to fill SF6 gas into the stainless steel shell. After multiple times of switching, the sealing surfaces of the valve core and the valve body can be abraded, and metal dust peeled off by abrasion can be diffused along with SF6 gas, so that hidden dangers are brought to safe operation of the SF6 ring main unit.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the metal dust that produces wearing and tearing and peel off because of the sealed face of case and valve body among the prior art can spread along with SF6 is gaseous, brings the problem of hidden danger for the safe operation of SF6 looped netowrk cabinet. Therefore, the utility model provides a dust keeper, gas circuit system and looped netowrk cabinet filters the metal dust in the SF6 gas, avoids bringing the hidden danger for the safe operation of SF6 looped netowrk cabinet.
In order to solve the above problem, an embodiment of the present invention discloses a dustproof device, including: the mounting part is provided with an air inlet and an air outlet, and the air inlet and the air outlet are communicated to form an air transmission channel;
and the dustproof assembly is arranged in the gas transmission channel so as to filter the gas from the gas inlet and discharge the filtered gas from the gas outlet.
By adopting the technical scheme, the installation part is provided with the gas transmission channel penetrating through the gas inlet and the gas outlet, and the dustproof assembly is installed in the gas transmission channel, so that gas from the gas inlet can be filtered, and the filtered gas is discharged from the gas outlet. Consequently, the dust keeper that this scheme of adoption provided, the metal dust that the wearing and tearing were peeled off can be along with SF6 is gaseous from the air inlet entering gas transmission passageway after, filters the metal dust by dustproof subassembly, has prevented that the SF6 gas that has the metal dust from getting into the looped netowrk cabinet inside, has avoided bringing the hidden danger for the safe operation of SF6 looped netowrk cabinet.
Further, in the embodiment of the present invention, the dustproof assembly includes: the dustproof breathable film, the two polytetrafluoroethylene components and the fixing component are arranged on the base;
the dustproof breathable film is arranged between the two polytetrafluoroethylene parts, and the two polytetrafluoroethylene parts and the dustproof breathable film are respectively welded into an integral structure through ultrasonic waves;
the fixing component fixes the two polytetrafluoroethylene components and the dustproof breathable film into an integrated structure in the gas transmission channel.
By adopting the technical scheme, the dustproof breathable film and the two polytetrafluoroethylene components can automatically adjust the size along with different temperature conditions, the dustproof assembly is high in flexibility, and the dustproof assembly can be flexibly applied to switch cabinets, ring main units and the like.
Further, in the embodiment of the present invention, the dustproof breathable film is a PUW breathable film.
By adopting the technical scheme, the dustproof breathable film adopts the PUW breathable film, and has the following advantages: the PUW breathable film can prevent water, dust and oil stains, and the protection grade reaches IP 68; the condensation and the fogging are prevented, and the service life of the product is prolonged; the heat dissipation and the pressure difference balance can improve the integrity of the dustproof device; chemical agent resistance, high and low temperature resistance, aging resistance and the like, and the reliability of the product in a harsh environment is improved; the maximum diameter of the meshes is 0.45um, so that the harmful metal dust particles can be effectively filtered.
Further, in the embodiment of the present invention, the polytetrafluoroethylene member is a polytetrafluoroethylene ring having an opening in the middle thereof, the opening being opposite to the air inlet, and the air inlet is communicated with the opening of the polytetrafluoroethylene member so that the gas enters the gas transmission channel.
By adopting the technical scheme, the polytetrafluoroethylene component is designed into the polytetrafluoroethylene adjusting ring with the structure for plugging, and the dustproof breathable film and the polytetrafluoroethylene component are tightly attached to the gas transmission channel through the fastening piece under different temperature conditions, so that the integral installation size of the dustproof device is ensured to be unchanged.
Further, in the embodiment of the present invention, the fixing component includes: a compression spring;
the wall surface of the polytetrafluoroethylene component, which is far away from the dustproof and breathable film, is tightly attached to and covers the air inlet;
the other polytetrafluoroethylene component is in close contact with one end of the compression spring, and the wall surface of the polytetrafluoroethylene component, which is far away from the dustproof and breathable film, is close to the other end of the compression spring;
the other end of the compression spring penetrates through the gas transmission channel and is tightly pressed on the mounting wall where the gas outlet is located along the direction of the central axis of the dustproof and breathable film.
Adopt above-mentioned technical scheme, be a body structure through compression spring with two polytetrafluoroethylene parts respectively with dustproof ventilated membrane through ultrasonic bonding and sticis in gas transmission channel, avoid the metal dust to pass through the gap diffusion, in addition, the spring is hugged closely to the up end when installing the ventilated membrane, and the spring other end is spacing by the retaining ring, ensures that the spring is in compression state all the time. The dustproof breathable film outer ring is made of polytetrafluoroethylene materials, and can correspondingly contract or expand when the environmental temperature changes, and the spring ensures that the breathable film is always tightly attached to the valve body by the spring force.
Further, in the embodiment of the present invention, the fixing component further includes:
a retainer ring member;
grooves are arranged on the inner wall surface of the gas transmission channel at intervals relative to the gas outlet;
the retainer ring component is fixedly arranged in the groove, and the height of the retainer ring component in the radial direction is higher than the depth of the groove;
the other end of the compression spring is pressed on the retainer ring component in the gas transmission channel along the direction of the central axis of the dustproof and breathable film.
Adopt above-mentioned technical scheme, the position department of the predetermined distance in the gas transmission passageway sets up the recess, with retaining ring part joint in the recess with fixed retaining ring part to support with compression spring and lean on, avoided compression spring from the wall landing at gas outlet place, improved dust keeper's reliability.
Further, in the embodiment of the present invention, the dustproof device further includes:
a support member;
the wall surface of the polytetrafluoroethylene component far away from the dustproof and breathable film is in close contact with one wall surface of the supporting component;
the other wall surface of the supporting component is tightly attached to and covers the air inlet, an opening is formed in the middle of the supporting component relative to the air inlet, and the air inlet is communicated with the opening of the supporting component so that the air enters the air transmission channel;
wherein the central axis of the air inlet and the central axis of the opening coincide.
By adopting the technical scheme, the supporting component is utilized to support the two polytetrafluoroethylene components and the dustproof breathable film to form an integrated structure through ultrasonic welding, so that the polytetrafluoroethylene components are protected, and the polytetrafluoroethylene components are prevented from being damaged.
Further, in an embodiment of the present invention, the supporting member specifically includes:
a first support member and a second support member;
the first support member has a bottom plate portion and a peripheral wall portion,
the middle part of the chassis part is provided with a first opening;
the peripheral wall part extends along the circumferential direction of the chassis part and surrounds the outer periphery of the chassis part, and the peripheral wall part extends from the outer periphery of the chassis part along the direction departing from the chassis part along the axial direction of the chassis part, wherein the peripheral wall part is perpendicular to the chassis part;
the second support component is provided with a bottom part and a flange part protruding out of the bottom part, the flange part is positioned in a space formed by the peripheral wall part and the bottom part, and the outer periphery edge of the bottom part is tightly contacted with the outer periphery edge of the peripheral wall part;
a second opening is formed in the middle of the bottom, and the central axis of the first opening is coincident with the central axis of the second opening;
the flange portion extends along a circumferential direction of the second opening and surrounds a circumferential edge of the second opening, and the flange portion extends from the circumferential edge of the second opening in a direction away from the bottom portion in an axial direction of the bottom portion, wherein the flange portion is perpendicular to the bottom portion.
Further, the utility model discloses an embodiment discloses a gas circuit system, include: SF6 gas tank and be used for opening the valve gear of SF6 gas tank still include as above arbitrary dust keeper, the air inlet of dust keeper with the SF6 gas outlet through connection of valve gear.
By adopting the technical scheme, the installation part is provided with the gas transmission channel penetrating through the gas inlet and the gas outlet, and the dustproof assembly is installed in the gas transmission channel, so that gas from the gas inlet can be filtered, and the filtered gas is discharged from the gas outlet. Consequently, the dust keeper that this scheme of adoption provided, the metal dust that the wearing and tearing were peeled off can be along with SF6 is gaseous from the air inlet entering gas transmission passageway after, filters the metal dust by dustproof subassembly, has prevented that the SF6 gas that has the metal dust from getting into the looped netowrk cabinet inside, has avoided bringing the hidden danger for the safe operation of SF6 looped netowrk cabinet.
Further, the utility model discloses an embodiment discloses a looped netowrk cabinet, include: the above-mentioned gas circuit system
By adopting the technical scheme, the installation part is provided with the gas transmission channel penetrating through the gas inlet and the gas outlet, and the dustproof assembly is installed in the gas transmission channel, so that gas from the gas inlet can be filtered, and the filtered gas is discharged from the gas outlet. Consequently, the dust keeper that this scheme of adoption provided, the metal dust that the wearing and tearing were peeled off can be along with SF6 is gaseous from the air inlet entering gas transmission passageway after, filters the metal dust by dustproof subassembly, has prevented that the SF6 gas that has the metal dust from getting into the looped netowrk cabinet inside, has avoided bringing the hidden danger for the safe operation of SF6 looped netowrk cabinet.
Other features and corresponding advantages of the invention are set forth in the following part of the specification, and it is to be understood that at least some of the advantages become apparent from the description of the invention.
Drawings
Fig. 1 is an exploded schematic view of a dustproof device disclosed in embodiment 1 of the present invention;
fig. 2 is a schematic sectional structure view of a dustproof device disclosed in embodiment 1 of the present invention.
Reference numerals:
1: an installation part; 10: an air inlet; 11: an air outlet; 2: a dust-proof assembly; 22: a fixing assembly; 23: a retainer ring member; 3: a support member; 31: a first support member; 32: a second support member.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
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. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
The following description is made with reference to fig. 1 and fig. 2 for a dust-proof device disclosed in embodiment 1 of the present invention, fig. 1 is a schematic view of an exploded structure of a dust-proof device disclosed in embodiment 1 of the present invention, and fig. 2 is a schematic view of a cross-sectional structure of a dust-proof device disclosed in embodiment 1 of the present invention.
The embodiment 1 of the utility model discloses a dustproof device, include: the mounting part 1 is provided with an air inlet 10 and an air outlet 11, and the air inlet 10 and the air outlet 11 are communicated to form an air transmission channel.
And the dustproof component 2 is arranged in the gas transmission channel, so that the gas from the gas inlet 10 is filtered, and the filtered gas is discharged from the gas outlet.
Specifically, as shown in fig. 1 and fig. 2, as an optional embodiment of the present invention, the dustproof assembly 2 includes: a dust-proof, breathable membrane, two polytetrafluoroethylene components, and a retaining assembly 22.
The dustproof breathable film is arranged between the two polytetrafluoroethylene components, and the two polytetrafluoroethylene components and the dustproof breathable film are in an integral structure through ultrasonic welding. The dustproof breathable film and the two polytetrafluoroethylene components can automatically adjust the size along with different temperature conditions.
The fixing assembly 22 fixes the two polytetrafluoroethylene members and the dustproof and breathable film into an integral structure in the gas transmission channel.
Specifically, the polytetrafluoroethylene component and the dustproof and breathable film can be welded in other ways besides ultrasonic welding, such as: by gluing, etc.
Further, dustproof ventilated membrane can be the PUW ventilated membrane, and the polytetrafluoroethylene part can have the open-ended polytetrafluoroethylene ring with air inlet 10 assorted for the middle part, and dustproof ventilated membrane sets up between two polytetrafluoroethylene rings, and compresses tightly by two polytetrafluoroethylene rings, exposes partial dustproof ventilated membrane at the ring portion at the center of two polytetrafluoroethylene rings, and the ring portion at the center of two polytetrafluoroethylene rings exposes partial dustproof ventilated membrane and aims at air inlet 10 to filter the gas that gets into from air inlet 10.
In particular, other types can also be selected for the type of dustproof breathable film, and the embodiment of the present invention is not limited to the mode of adopting the PUW breathable film. In addition, the teflon member may have a central opening that matches the shape and size of the air inlet 10 and may be the same or similar to the air inlet 10.
Further, the retaining member 22 may be selected as a compression spring as shown, wherein a teflon member is attached to and covers the air inlet 10 away from the wall of the dustproof and breathable membrane. The other polytetrafluoroethylene component is in close contact with one end of the compression spring, and the wall surface of the other polytetrafluoroethylene component is far away from the dustproof breathable film. The other end of compression spring compresses tightly in the wall at gas outlet 11 place along the direction of the central axis of dustproof ventilated membrane in gas transmission channel, and it should be noted that fixed subassembly 22 also can be selected to other modes, the embodiment 1 of the utility model does not limit this, under the temperature condition of difference, hugs closely dustproof ventilated membrane and polytetrafluoroethylene part in gas transmission channel through compression spring, guarantees that dust keeper's whole installation size is unchangeable.
Specifically, as shown in fig. 1 and 2, one of the ptfe members abuts and covers the inlet port 10 for filtering gas entering through the inlet port 10. When the polytetrafluoroethylene part has the polytetrafluoroethylene ring with air inlet 10 assorted open-ended for the middle part, dustproof ventilated membrane sets up between two polytetrafluoroethylene rings, and compresses tightly by two polytetrafluoroethylene rings, exposes partial dustproof ventilated membrane in the ring portion at two polytetrafluoroethylene ring's center, and at this moment, the dustproof ventilated membrane of ring portion exposure part at two polytetrafluoroethylene ring's center should aim at air inlet 10 to filter the gas that gets into from air inlet 10.
Another polytetrafluoroethylene part in the polytetrafluoroethylene part supports and leans on in compression spring's one end, and compression spring's the other end supports and leans on in the face wall at gas outlet 11 places for compression spring is in compression state, and the elasticity that compression spring produced is compressed tightly in the installation department with two polytetrafluoroethylene parts and dustproof ventilated membrane through ultrasonic bonding structure that is an organic whole, reaches two polytetrafluoroethylene parts of fixed mounting and dustproof ventilated membrane and is an integrative structure through ultrasonic bonding.
Further, in order to avoid the compression spring from slipping off the air inlet 10, as shown in fig. 1 and 2, as an alternative embodiment of the present invention, the fixing assembly 22 further includes: a retainer ring member 23;
grooves are arranged on the inner wall surface of the gas transmission channel at intervals relative to the gas outlet 11;
the retainer ring member 23 is fixedly installed in the groove, and the height of the retainer ring member 23 in the radial direction is higher than the depth of the groove.
The other end of the compression spring is pressed against the retainer ring member 23 in the gas transmission passage in the direction of the central axis of the dustproof and breathable film.
Specifically, the structure of the retainer ring component 23 is as shown, the retainer ring component 23 is specifically an open ring, holes are arranged at two ends of the ring close to the opening, when the retainer ring component 23 is installed in the groove, the two holes can be pinched by tweezers, so that the width of the opening is reduced, and the retainer ring component 23 is installed in the groove of the gas transmission channel.
Further, in order to support and protect the structure in which the two ptfe members and the dustproof and breathable film are integrally formed by ultrasonic welding, as shown in fig. 1 and 2, as an alternative embodiment of the present application, the dustproof device further includes:
a support member 3;
a wall surface of a polytetrafluoroethylene member remote from the dustproof and breathable film is in close contact with a wall surface of the support member 3.
The central part of the support member 3 is provided with an opening opposite to the gas inlet 10, the gas inlet 10 communicates with the opening of the support member 3 to let gas enter the gas transmission passage, and the central axis of the gas inlet 10 coincides with the central axis of the opening of the support member 3.
Specifically, as shown in fig. 1 and fig. 2, the supporting member 3 is used for supporting two ptfe members and the dustproof and breathable membrane, and is integrally formed by ultrasonic welding, it should be noted that an opening needs to be formed in the supporting member 3 and the opening needs to be aligned with the gas inlet 10 to ensure that gas enters the input channel, and the size of the opening formed in the supporting member 3 should be smaller than that of the ptfe member to support the ptfe member.
Further, as an alternative embodiment of the present invention, as shown, the supporting member 3 specifically includes:
a first support member 31 and a second support member 32;
the first support member 31 has a bottom plate portion and a peripheral wall portion,
the middle part of the chassis part is provided with a first opening;
the peripheral wall part extends along the circumferential direction of the chassis part and surrounds the outer periphery of the chassis part, and the peripheral wall part extends from the outer periphery of the chassis part along the axial direction of the chassis part and is away from the chassis part, wherein the peripheral wall part is vertical to the chassis part;
the second support member 32 has a bottom portion and a flange portion protruding from the bottom portion, the flange portion is located in a space formed by the peripheral wall portion and the bottom portion, and an outer peripheral edge of the bottom portion is in close contact with an outer peripheral edge of the peripheral wall portion;
a second opening is arranged in the middle of the bottom, and the central axis of the first opening is coincided with the central axis of the second opening;
the flange portion extends along a circumferential direction of the second opening and surrounds a periphery of the second opening, and the flange portion extends from the periphery of the second opening in a direction facing away from the bottom portion in an axial direction of the bottom portion, wherein the flange portion is perpendicular to the bottom portion.
The embodiment 1 discloses a dust keeper, because the installation department has the gas transmission passageway that link up air inlet and gas outlet, dustproof unit mount can filter the gas that comes from the air inlet and will filter the gas after from the gas outlet discharge in gas transmission passageway. Consequently, the dust keeper that this scheme of adoption provided, the metal dust that the wearing and tearing were peeled off can be along with SF6 is gaseous from the air inlet entering gas transmission passageway after, filters the metal dust by dustproof subassembly, has prevented that the SF6 gas that has the metal dust from getting into the looped netowrk cabinet inside, has avoided bringing the hidden danger for the safe operation of SF6 looped netowrk cabinet.
Example 2
The embodiment 2 of the utility model discloses gas circuit system, include: SF6 gas box and valve device for opening SF6 gas box, and also includes the dust keeper as mentioned in any one of the above embodiments, and the air inlet of the dust keeper is connected with the SF6 gas outlet of the valve device.
The embodiment 2 discloses a dust keeper, because the installation department has the gas transmission passageway that link up air inlet and gas outlet, dustproof unit mount can filter the gas that comes from the air inlet and will filter the gas after from the gas outlet discharge in gas transmission passageway. Consequently, the dust keeper that this scheme of adoption provided, the valve opens and shuts at the valve gear and the metal dust that the wearing and tearing were peeled off can filter the metal dust along with SF6 is gaseous after getting into gas transmission channel from the air inlet, has prevented that the SF6 gas that has the metal dust from getting into the looped netowrk cabinet inside, has avoided bringing the hidden danger for the safe operation of SF6 looped netowrk cabinet.
Example 3
The embodiment 3 of the utility model discloses ring main unit, include the gas circuit system as mentioned in above embodiment.
The embodiment of the utility model provides a ring main unit that 3 discloses because the ring main unit contains the gas circuit system that above embodiment mentioned, the gas circuit system contains dust keeper, therefore, the utility model discloses a ring main unit that 3 discloses has following beneficial effect:
because the installation part is provided with the gas transmission channel penetrating through the gas inlet and the gas outlet, the dustproof assembly is installed in the gas transmission channel, and can filter the gas from the gas inlet and discharge the filtered gas from the gas outlet. Consequently, the dust keeper that this scheme of adoption provided, the valve opens and shuts at the valve gear and the metal dust that the wearing and tearing were peeled off can filter the metal dust along with SF6 is gaseous after getting into gas transmission channel from the air inlet, has prevented that the SF6 gas that has the metal dust from getting into the looped netowrk cabinet inside, has avoided bringing the hidden danger for the safe operation of SF6 looped netowrk cabinet.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, decomposed, or have some or all of their technical features replaced with equivalents; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A dust-proof device, comprising:
the mounting part is provided with an air inlet and an air outlet, and the air inlet and the air outlet are communicated to form an air transmission channel;
and the dustproof assembly is arranged in the gas transmission channel so as to filter the gas from the gas inlet and discharge the filtered gas from the gas outlet.
2. The dust keeper of claim 1, wherein the dust keeper comprises: dustproof transparent
The air film, the two polytetrafluoroethylene components and the fixing component;
the dustproof breathable film is arranged between the two polytetrafluoroethylene parts, and the two polytetrafluoroethylene parts and the dustproof breathable film are respectively welded into an integral structure through ultrasonic waves;
the fixing component fixes the two polytetrafluoroethylene components and the dustproof breathable film into an integrated structure in the gas transmission channel.
3. The dust-repellent device according to claim 2, wherein said dust-repellent gas-permeable membrane is a PUW gas-permeable membrane.
4. The dust keeper of claim 2, wherein said teflon member is a teflon ring having an opening in a middle portion thereof opposite said air inlet, said air inlet communicating with said teflon member opening to allow said air to enter said air delivery passage.
5. The dust keeper of claim 2, wherein the securing assembly comprises: a compression spring;
the wall surface of the polytetrafluoroethylene component, which is far away from the dustproof and breathable film, is tightly attached to and covers the air inlet;
the other polytetrafluoroethylene component is in close contact with one end of the compression spring, and the wall surface of the polytetrafluoroethylene component, which is far away from the dustproof and breathable film, is close to the other end of the compression spring;
the other end of the compression spring penetrates through the gas transmission channel and is tightly pressed on the mounting wall where the gas outlet is located along the direction of the central axis of the dustproof and breathable film.
6. The dust keeper of claim 5, wherein the securing assembly further comprises:
a retainer ring member; grooves are arranged on the inner wall surface of the gas transmission channel at intervals relative to the gas outlet;
the retainer ring component is fixedly arranged in the groove, and the height of the retainer ring component in the radial direction is higher than the depth of the groove;
the other end of the compression spring is pressed on the retainer ring component in the gas transmission channel along the direction of the central axis of the dustproof and breathable film.
7. The dust keeper of any of claims 2-6, further comprising:
a support member;
the wall surface of the polytetrafluoroethylene component far away from the dustproof and breathable film is in close contact with one wall surface of the supporting component;
the other wall surface of the supporting component is tightly attached to and covers the air inlet, an opening is formed in the middle of the supporting component relative to the air inlet, and the air inlet is communicated with the opening of the supporting component so that the air enters the air transmission channel;
wherein a central axis of the air inlet and a central axis of the opening of the support member coincide.
8. The dust keeper of claim 7, characterized in that the support member comprises in particular:
a first support member and a second support member;
the first support member has a bottom plate portion and a peripheral wall portion,
the middle part of the chassis part is provided with a first opening;
the peripheral wall part extends along the circumferential direction of the chassis part and surrounds the outer periphery of the chassis part, and the peripheral wall part extends from the outer periphery of the chassis part along the direction departing from the chassis part along the axial direction of the chassis part, wherein the peripheral wall part is perpendicular to the chassis part;
the second support component is provided with a bottom part and a flange part protruding out of the bottom part, the flange part is positioned in a space formed by the peripheral wall part and the bottom part, and the outer periphery edge of the bottom part is tightly contacted with the outer periphery edge of the peripheral wall part;
a second opening is formed in the middle of the bottom, and the central axis of the first opening is coincident with the central axis of the second opening;
the flange portion extends along a circumferential direction of the second opening and surrounds a circumferential edge of the second opening, and the flange portion extends from the circumferential edge of the second opening in a direction away from the bottom portion in an axial direction of the bottom portion, wherein the flange portion is perpendicular to the bottom portion.
9. A gas circuit system comprising: SF6 gas box and valve device for opening said SF6 gas box, characterized in that, said gas circuit system also includes the dust-proof device of any claim 1-8, the air inlet of said dust-proof device is connected with SF6 gas outlet of said valve device.
10. A ring main unit, comprising: the air path system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922073610.5U CN210806570U (en) | 2019-11-27 | 2019-11-27 | Dust keeper, gas circuit system and looped netowrk cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922073610.5U CN210806570U (en) | 2019-11-27 | 2019-11-27 | Dust keeper, gas circuit system and looped netowrk cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210806570U true CN210806570U (en) | 2020-06-19 |
Family
ID=71226438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922073610.5U Active CN210806570U (en) | 2019-11-27 | 2019-11-27 | Dust keeper, gas circuit system and looped netowrk cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210806570U (en) |
-
2019
- 2019-11-27 CN CN201922073610.5U patent/CN210806570U/en active Active
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