CN106949273B - Protection device and protection mechanism for SF6 equipment rupture membrane - Google Patents
Protection device and protection mechanism for SF6 equipment rupture membrane Download PDFInfo
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- CN106949273B CN106949273B CN201710169690.7A CN201710169690A CN106949273B CN 106949273 B CN106949273 B CN 106949273B CN 201710169690 A CN201710169690 A CN 201710169690A CN 106949273 B CN106949273 B CN 106949273B
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- explosion
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/14—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member
- F16K17/16—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member with fracturing diaphragm ; Rupture discs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
Abstract
The invention discloses a protection device and a protection mechanism for an explosion-proof membrane of SF6 equipment, which comprises a base ring seat, wherein the base ring seat is provided with an assembly cavity formed by enclosing an inner ring wall; the protective cover comprises an assembly barrel and a sealing ring plate which are coaxially arranged and mutually connected, the assembly barrel is sleeved in the assembly chamber, and the sealing ring plate is buckled on the bottom ring seat in a sealing manner; and the protection piece is arranged on the end face, away from the assembling cylinder, of the sealing ring plate in an overlaying mode or embedded in the assembling cylinder. The protective cover is arranged on the bottom ring seat, the sealing ring plate is buckled on the bottom ring seat, and then the protective piece is covered on the opening of the sealing ring plate or embedded in the assembling cylinder, so that the assembling cavity of the bottom ring seat forms a closed cavity. Therefore, the explosion-proof membrane can be isolated from being contacted with external humid air, the corrosion phenomenon is avoided, the explosion-proof membrane has better metal performance and action value, and the normal operation of SF6 equipment is ensured.
Description
Technical Field
The invention relates to the technical field of protection of electric power facilities, in particular to a protection device and a protection mechanism for an explosion-proof membrane of SF6 equipment.
background
The function of the explosion-proof membrane is to release high-pressure gas with over-high pressure in the gas chamber so as to protect the safety of equipment. Therefore, for safety and economic reasons, most of the air chambers of SF6 equipment in an operating substation require the deployment of rupture membranes. When the pressure of the SF6 gas increases due to a failure in the gas chamber, the rupture disk in the explosion-proof device is ruptured when a predetermined pressure value (i.e., an operation value) is reached to prevent the pressure in the gas chamber from becoming too high, and the high-pressure gas in the gas chamber is released outward.
At present, the anti-corrosion capability of materials used for an anti-explosion membrane used in SF6 equipment is weak, in addition, equipment manufacturers do not take moisture-proof and rust-proof measures for the anti-explosion membrane, and do not put forward specific requirements for daily operation and maintenance of the anti-explosion membrane, and most SF6 equipment runs in an outdoor environment, and the anti-explosion membrane is exposed in humid air for a long time, so that the anti-explosion membrane is easy to rust. The performance of the rusted explosion-proof membrane is reduced, and the action value is reduced along with the performance reduction, so that the explosion-proof membrane is easy to break abnormally, and the normal operation of equipment is seriously threatened.
Disclosure of Invention
Based on the above, the invention aims to overcome the defects of the prior art, and provides a protection device and a protection mechanism for an explosion-proof membrane of SF6 equipment, which can avoid the phenomenon that the explosion-proof membrane is rusted due to exposure to humid air, so that the metal performance and the action value of the explosion-proof membrane are influenced, and the safety and the normal operation of the equipment are ensured.
The technical scheme is as follows:
A protection device for an explosion-proof membrane of SF6 equipment comprises:
The bottom ring seat is provided with an assembly cavity formed by enclosing an inner ring wall;
The protective cover is provided with an exhaust through hole communicated with the assembly cavity and comprises an assembly barrel and a sealing ring plate which are coaxially arranged and mutually connected, the assembly barrel is sleeved in the assembly cavity, and the sealing ring plate is in sealing buckling connection with the bottom ring seat; and
And the protection piece is arranged on the end face, away from the assembly cylinder, of the sealing ring plate in a sealing mode or is embedded in the assembly cylinder in a sealing mode.
When the protection device of the explosion-proof membrane of the SF6 equipment is used, the bottom ring seat is sleeved outside the exhaust hole of the SF6 equipment, then the protection cover is installed on the bottom ring seat through the assembly cylinder, the sealing ring plate is in sealing buckling connection with the end face of the bottom ring seat, and at the moment, the exhaust through hole is communicated with the assembly cavity. And then, the protective piece made of the material with the lower explosion value is hermetically covered on the opening of the sealing ring plate or is hermetically embedded in the assembly cylinder, so that the assembly cavity and the exhaust through hole of the base ring seat form a closed cavity. Therefore, the explosion-proof membrane can be isolated from being contacted with external humid air, so that the corrosion phenomenon of the explosion-proof membrane is avoided, the explosion-proof membrane has better metal performance and action value, and the normal operation of SF6 equipment is ensured.
The technical scheme is further explained as follows:
in one embodiment, the sealing device further comprises a first sealing element, wherein the first sealing element is sleeved on the assembling cylinder and is pressed between the sealing ring plate and the bottom ring seat. Therefore, the first sealing element is sleeved on the assembling cylinder and is pressed between the end faces of the sealing ring plate and the bottom ring seat, the sealing reliability of the protection device can be further improved, and the corrosion and damage of the explosion-proof membrane caused by the intrusion of moisture can be avoided.
In one embodiment, the outer peripheral wall of the assembling cylinder is provided with an external thread structure, the inner ring wall of the bottom ring seat is provided with an internal thread structure, and the external thread structure is in thread fit with the internal thread structure. Therefore, the assembly and disassembly convenience of the base ring seat and the protective cover can be improved through the thread matching of the external thread structure on the assembly cylinder and the internal thread structure on the base ring seat, and the operation and maintenance efficiency is improved.
In one embodiment, an annular clamping groove is formed in the outer cylinder wall of the assembling cylinder along the circumferential direction, and the first sealing element is provided with a clamping portion clamped in the annular clamping groove. Therefore, the clamping portion is clamped in the annular clamping groove, the first sealing piece can be fixedly installed, the first sealing piece is prevented from falling off at will when the protective cover is assembled, disassembled and replaced, and operation convenience is not affected.
In one embodiment, a first annular boss is circumferentially arranged on a side surface of the sealing ring plate opposite to the base ring seat, a second annular boss is circumferentially arranged on an end surface of the base ring seat opposite to the sealing ring plate, and the first annular boss and the second annular boss are mutually buckled and in sealing fit. Therefore, through the mutual buckle of first annular boss and second annular boss and sealed cooperation, not only can improve the assembly steadiness of protective cover and bottom ring seat, can improve protector's sealing performance simultaneously, guarantee that the airtight cavity is interior dry comfortable, guarantee that the explosion-proof membrane has good working property.
In one embodiment, the sealing ring plate comprises a ring plate body connected with the assembling cylinder and a cover plate detachably connected with the ring plate body, the ring plate body comprises a first assembling surface, the cover plate comprises a second assembling surface, the exhaust through hole comprises a first through hole arranged on the ring plate body, the protecting piece is arranged on the first assembling surface in a covering mode and covers the first through hole, an annular clamping groove is formed in the first assembling surface in an inwards concave mode, an annular clamping column is arranged in the second assembling surface in an outwards convex mode, the annular clamping column is in snap fit with the annular clamping groove, and the protecting piece is arranged between the first assembling surface and the second assembling surface in a pressing mode. So not only set up in the first assembly surface of ring plate body and sealed shielding first through-hole through the protection piece to protector forms airtight cavity, isolated outside humid air, simultaneously through the snap-fit of annular card post with ring groove, can also reliably compress tightly the protection piece between ring plate body and apron, with the installation fastness and the operational reliability that improve the protection piece.
in one embodiment, the annular plate further comprises a second sealing element and a third sealing element, the first assembly surface is further provided with a first sealing groove surrounding the first through hole, the second assembly surface is further provided with a second sealing groove opposite to the first sealing groove, the first sealing element is embedded in the first sealing groove, the protection element is arranged on the first sealing element, the second sealing element is embedded in the second sealing groove, and when the annular plate body is assembled with the cover plate, the protection element is arranged between the first sealing element and the second sealing element in a pressing mode. Therefore, when the ring plate body is assembled with the cover plate, the protection piece is arranged between the second sealing piece and the third sealing piece and is compressed, the sealing performance of the protection device can be further improved, external damp air is prevented from invading into the device to corrode the explosion-proof film, meanwhile, a certain protection effect on the protection piece is achieved, and the protection piece is prevented from being compressed for a long time and being damaged.
In one embodiment, the annular clamping column is provided with a first thread, the groove wall of the annular clamping groove is provided with a second thread, and the first thread is screwed with the second thread in a matching manner. Therefore, the first thread and the second thread are matched and screwed, the assembly and disassembly operation of the ring plate body and the cover plate can be realized more conveniently in a threaded connection mode, and the use convenience and later maintenance efficiency of the protective device are facilitated.
In one embodiment, the outer ring wall of the base ring seat is provided with an anti-slip structure. Therefore, when the protection device needs to be integrally replaced, the friction force between the protection device and the hand of a worker can be increased through the anti-skidding structure arranged on the outer ring wall of the base ring seat, so that the protection device is prevented from skidding when being pulled out, and the reliability of detachment and replacement is improved.
The invention also provides a protection mechanism which comprises SF6 equipment and the protection device of the explosion-proof membrane of the SF6 equipment, wherein the SF6 equipment is provided with an exhaust hole, the explosion-proof membrane is arranged in the exhaust hole, and the protection device of the explosion-proof membrane of the SF6 equipment is hermetically covered on the explosion-proof membrane.
The protection mechanism is characterized in that a protection device of an explosion-proof membrane of the SF6 equipment is sleeved on a vent hole of the SF6 equipment, namely, a bottom ring seat is arranged outside the vent hole of the SF6 equipment, then a protection cover is arranged on the bottom ring seat through an assembly cylinder, a sealing ring plate is buckled on the end face of the bottom ring seat, and then a protection piece made of a material with a low explosion value is covered on an opening of the sealing ring plate or embedded in the assembly cylinder, so that an assembly cavity of the bottom ring seat forms a closed cavity. Therefore, the explosion-proof membrane can be isolated from being contacted with external humid air, so that the corrosion phenomenon of the explosion-proof membrane is avoided, the explosion-proof membrane has better metal performance and action value, and the normal operation of SF6 equipment is ensured.
Drawings
Fig. 1 is a schematic diagram of an explosion structure of a protection device of an explosion-proof membrane of an SF6 equipment according to an embodiment of the invention;
Fig. 2 is a schematic side view of a protective cover according to an embodiment of the invention;
Fig. 3 is a schematic structural diagram of an embodiment of a protecting cover according to an embodiment of the present invention.
Description of reference numerals:
100. the sealing ring comprises a base ring seat, 110, an assembly cavity, 120, an internal thread structure, 200, a protective cover, 210, an assembly cylinder, 211, an external thread structure, 212, an annular clamping groove, 220, a sealing annular plate, 221, an annular plate body, 221a, a first assembly surface, 221b, an annular clamping groove, 221c, a first sealing groove, 222, a cover plate, 222a, a second assembly surface, 222b, an annular clamping column, 222c, a second sealing groove, 300, a protection piece, 400, a first sealing piece, 500, a handle, 600, a second sealing piece, 700 and a third sealing piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to," "disposed on" 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 specific manner of fixedly connecting one element to another element can be implemented by the prior art, and will not be described herein, and preferably, a screw-threaded connection is used.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
the terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
Referring to fig. 1 and fig. 2, the protection device for the rupture disk of the SF6 equipment according to an embodiment of the present invention includes: the base ring seat 100 is provided with an assembly cavity 110 formed by enclosing an inner ring wall, wherein the assembly cavity is formed by enclosing an inner ring wall; the protective cover 200 is provided with a vent through hole communicated with the assembly cavity 110, the protective cover 200 comprises an assembly barrel 210 and a sealing ring plate 220 which are coaxially arranged and mutually connected, the assembly barrel 210 is sleeved in the assembly cavity 110, and the sealing ring plate 220 is hermetically buckled on the base ring seat 100; and a protection member 300, wherein the protection member 300 is hermetically covered on the end surface of the sealing ring plate 220 away from the assembling cylinder, or the protection member 300 is hermetically embedded in the assembling cylinder 210, so that the assembling cavity 110 forms a closed chamber.
When the protection device for the rupture disk of the SF6 equipment is used, the base ring seat 100 is sleeved outside the vent hole of the SF6 equipment, then the protection cover 200 is installed on the base ring seat 100 through the assembly cylinder 210, the sealing ring plate 220 is buckled on the end face of the base ring seat 100, and then the protection piece 300 made of a material with a low bursting value (such as fiber, polyester and the like) is covered on the opening of the sealing ring plate 220 or embedded in the assembly cylinder 210, so that the assembly cavity 110 of the base ring seat 100 forms a closed cavity. Therefore, the explosion-proof membrane can be isolated from being contacted with external humid air, so that the corrosion phenomenon of the explosion-proof membrane is avoided, the explosion-proof membrane has better metal performance and action value, and the normal operation of SF6 equipment is ensured.
Specifically, the SF6 equipment may be a GIS, HGIS device, or the like. The base ring seat 100 may be a cylinder body having a hollow cavity, and an assembly cavity 110 is defined by an inner wall of the cylinder body; correspondingly, the protecting cover 200 is also a cylinder body, the hollow cavity of the cylinder body is a vent hole, and the protecting cover 200 comprises an assembly cylinder 210 and a sealing ring plate 220 which are integrally formed, the sealing ring plate 220 is optionally fixed at the end of the assembly cylinder 210, and the central hole of the sealing ring plate 220 is coaxially arranged with the inner circular cavity of the assembly cylinder 210 and is matched with the inner circular cavity in size. Therefore, the assembling cylinder 210 is sleeved into the hollow cavity of the cylinder, and the sealing ring plate 220 is tightly buckled with the end surface of the bottom ring seat 100 to realize the assembling connection of the two. In addition, the protection member 300 is a film member made of a material with a low bursting value, and the film member may be covered on a side of the sealing ring plate 220 away from the assembling cylinder 210, and sealed and fixed by applying glue therebetween; or the outer edge wall of the film member is connected with the inner wall of the cylinder in a ring manner (by bonding or the like) and embedded in the assembly cylinder 210, so as to realize the sealing treatment of the assembly cavity 110, i.e. to isolate the contact of the protective film with the outside air. In one embodiment, the number of the protection members 300 is two or more, and two adjacent protection members 300 are spaced apart. This ensures that when one of the protection members 300 is damaged by abnormal factors, the remaining protection members 300 also protect the rupture disk, so as to further improve the usability of the protection device. Specifically, the two shielding members 300 may be spaced apart from each other in such a manner that one shielding member is disposed on the end surface of the sealing ring plate 220 and the other shielding member is disposed on the inner wall of the assembly cavity 110; or both are arranged on the inner wall of the assembly cavity 110 at intervals; or two stacked on the end face of the seal ring plate 220.
On the basis of the above embodiment, optionally, the outer peripheral wall of the assembly cylinder 210 is in interference fit with the inner ring wall of the base ring seat 100. Therefore, through the excessive cooperation between the outer peripheral wall of the assembling cylinder 210 and the inner ring wall of the base ring seat 100, not only can the base ring seat 100 and the protecting cover 200 be firmly assembled, but also the gap formed between the assembling surfaces can be avoided, and the sealing performance of the protecting device can be prevented from being influenced.
referring to fig. 1, further, an outer circumferential wall of the assembly cylinder 210 is provided with an external thread structure 211, an inner circumferential wall of the base ring seat 100 is provided with an internal thread structure 120, and the external thread structure 211 is in thread fit with the internal thread structure 120. Therefore, the external thread structure 211 on the assembling cylinder 210 is in threaded fit with the internal thread structure 120 on the base ring seat 100, so that the assembly and disassembly convenience of the base ring seat 100 and the protective cover 200 can be improved, and the operation and maintenance efficiency can be improved.
Furthermore, a first annular boss (not shown in the figure) is circumferentially arranged on the side surface of the sealing ring plate 220 opposite to the base ring seat 100, a second annular boss is circumferentially arranged on the end surface of the base ring seat 100 opposite to the sealing ring plate 220, and the first annular boss and the second annular boss are mutually buckled and in sealing fit. Therefore, the S-shaped sealing channel is formed by the mutual buckling of the first annular boss and the second annular boss, so that the protective cover 200 and the foundation ring seat 100 can be prevented from moving and loosening laterally, the assembling stability of the protective cover 200 and the foundation ring seat 100 is improved, the sealing performance of the protective device can be improved, the airtight chamber is ensured to be dry and comfortable, and the explosion-proof membrane has excellent working performance.
As shown in fig. 2, the above-mentioned protection device for the rupture disk of the SF6 apparatus further includes a first sealing member 400, and the first sealing member 400 is sleeved on the assembly cylinder 210 and is pressed between the sealing ring plate 220 and the base ring seat 100. Therefore, the first sealing element 400 is sleeved on the assembling cylinder 210, and the first sealing element 400 is pressed between the sealing ring plate 220 and the end surface of the base ring seat 100, so that the sealing performance of the protection device can be further improved, and the corrosion damage of the explosion-proof membrane caused by the intrusion of moisture can be avoided. Specifically, the first sealing member 400 may be an O-ring, an oil seal, or the like, and the present embodiment is preferably an O-ring. Deformation occurs by extruding the O-shaped sealing ring, so that certain pre-tightening force of the protective cover 200 can be provided, and loosening of the threaded structure after long-time work is avoided.
further, an annular groove 212 is circumferentially formed in the outer cylinder wall of the assembling cylinder 210, and the first sealing element 400 is provided with a clamping portion (not shown) clamped in the annular groove 212. Therefore, the clamping portion is clamped in the annular clamping groove 212, so that the first sealing element 400 can be installed and fixed, and the first sealing element 400 is prevented from falling off randomly when the protective cover 200 is assembled, disassembled and replaced, so that the operation convenience is not influenced.
Referring to fig. 3, in addition, the sealing ring plate 220 includes a ring plate body 221 coupled to the assembling cylinder, and a cover plate 222 detachably connected to the ring plate body 221, the ring plate body 221 includes a first assembling surface 221a, the cover plate 222 includes a second assembling surface 222a, the exhaust through hole includes a first through hole disposed on the ring plate body 221, the protection element is disposed on the first assembling surface 221a and covers the first through hole, the first assembling surface 221a is inwardly recessed and provided with a ring-shaped clamping groove 221b, the second assembling surface 222a is outwardly protruded and provided with a ring-shaped clamping column 222b, the ring-shaped clamping column 222b is in snap fit with the ring-shaped clamping groove 221b, and at this time, the protection element is disposed between the first assembling surface 221a and the second assembling surface 222a in a pressing manner. Therefore, the protection member is disposed on the first mounting surface 221a of the ring plate body 221 and seals and shields the first through hole, so that the protection device forms a sealed chamber to isolate external moisture from air, and meanwhile, the protection member can be reliably pressed between the ring plate body 221 and the cover plate 222 by the snap fit of the annular clamping column 222b and the annular clamping groove 221b, thereby improving the mounting firmness and the working reliability of the protection member. Specifically, the cover plate 220 is a hollow ring body, the hollow cavity is an exhaust through hole, and the ring plate body 221 and the cover plate 222 are formed by being divided along the radial direction of the middle portion of the sealing ring plate 220. Therefore, the exhaust through hole is divided into a first through hole on the ring plate body 221 and a second through hole on the cover plate 222, and when the shielding member is disposed on the first through hole in a shielding manner, the first through hole and the second through hole are isolated, that is, the inner cavity of the shielding member is isolated from the air circulation of the external environment. The protection element can be pressed and fixed by the clamping connection between the ring plate body 221 and the cover plate 222, and compared with the bonding mode and the like, the fixing mode is more reliable, and the protection element can be prevented from falling off during long-time work. In addition, the annular clamping column 222b and the annular clamping groove 221b are connected in a buckling mode, so that the assembly and disassembly are more convenient.
Further, the annular clamping column 222b is provided with a first thread (an internal thread or an external thread), and two side walls of the annular clamping groove 221b are provided with second threads matched with the internal thread or the external thread, so that the first thread and the second threads are matched and screwed, the assembly and disassembly operation of the annular plate body 221 and the cover plate 222 can be realized more conveniently in a threaded connection mode, and the use convenience and the later maintenance efficiency of the protection device are facilitated.
Further, the sealing structure further includes a second sealing element 600 and a third sealing element 700, the first mounting surface 221a is further provided with a first sealing groove 221c surrounding the first through hole, the second mounting surface 222a is further provided with a second sealing groove 222c opposite to the first sealing groove 221c, the first sealing element is embedded in the first sealing groove 221c, the shielding element is disposed on the first sealing element, the second sealing element 600 is embedded in the second sealing groove 222c, and when the ring plate body 221 is mounted with the cover plate 222, the shielding element is disposed between the third sealing element 700 and the second sealing element 600 in a pressing manner. Therefore, when the ring plate body 221 and the cover plate 222 are assembled, the protection member is disposed between the second sealing member 600 and the third sealing member 700 and compressed, so that the sealing performance of the protection device can be further improved, the external humid air can be prevented from invading into the device to corrode the explosion-proof membrane, and meanwhile, a certain protection effect can be achieved on the protection member, and the protection member can be prevented from being compressed and damaged by hard objects for a long time. Optionally, the second sealing element 600 is an O-ring, and has a width greater than the groove depth of the first sealing groove 221 c; the third sealing member 700 is an O-ring, and has a width that is also larger than the depth of the second sealing groove 222c, and the size of the protection member should be not smaller than the size of the O-ring, so as to ensure that the protection member can be reliably clamped and fixed between the upper and lower O-rings.
At least one handle 500 is convexly arranged on the side of the sealing ring plate 220 facing away from the assembly cylinder 210. Therefore, after the handle is arranged on the side of the sealing ring plate 220, which is far away from the assembling cylinder 210, a worker can conveniently rotate the protective cover 200 to take the protective cover down, and the operation convenience and the use experience are improved.
In addition, the outer ring wall of the base ring seat 100 is provided with an anti-slip structure (not shown). Therefore, when the protection device needs to be integrally replaced, the friction force between the protection device and the hand of a worker can be increased through the anti-skidding structure arranged on the outer ring wall of the base ring seat 100, so that the protection device is prevented from skidding when being pulled out, and the reliability of detachment and replacement is improved. Specifically, the protection structure may be a plurality of protrusions or recesses arranged at intervals, and the protrusions or recesses may also be in various shapes, which are not described herein again.
The invention also provides a protection mechanism which comprises SF6 equipment and the protection device of the explosion-proof membrane of the SF6 equipment, wherein the SF6 equipment is provided with an exhaust hole, the explosion-proof membrane is arranged in the exhaust hole, and the protection device of the explosion-proof membrane of the SF6 equipment is hermetically covered on the explosion-proof membrane.
The protection mechanism is characterized in that a protection device of an explosion-proof membrane of the SF6 equipment is sleeved outside an exhaust hole of the SF6 equipment, namely, a base ring seat 100 is installed in the exhaust hole of the SF6 equipment, then a protection cover 200 is installed on the base ring seat 100 through an assembly cylinder 210, a sealing ring plate 220 is buckled on the end face of the base ring seat 100, and then a protection piece 300 made of a material with a lower explosion value is covered on an opening of the sealing ring plate 220 or embedded in the assembly cylinder 210, so that an assembly cavity 110 of the base ring seat 100 forms a closed cavity. Therefore, the explosion-proof membrane can be isolated from being contacted with external humid air, so that the corrosion phenomenon of the explosion-proof membrane is avoided, the explosion-proof membrane has better metal performance and action value, and the normal operation of SF6 equipment is ensured.
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 more specific and detailed, but not construed 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 (9)
1. a protection device for an explosion-proof membrane of SF6 equipment is characterized by comprising:
The bottom ring seat is provided with an assembly cavity formed by enclosing an inner ring wall;
The protective cover is provided with an exhaust through hole communicated with the assembly cavity and comprises an assembly barrel and a sealing ring plate which are coaxially arranged and mutually connected, the assembly barrel is sleeved in the assembly cavity, and the sealing ring plate is in sealing buckling connection with the bottom ring seat; and
The protection piece is arranged on the end face, away from the assembling barrel, of the sealing ring plate in a sealing mode or is embedded in the assembling barrel in a sealing mode; the two protection parts are arranged at intervals, one protection part covers the end face of the sealing ring plate, and the other protection part is embedded on the inner wall of the assembly cavity; the sealing ring plate is provided with a first annular boss along the circumferential direction on the side face opposite to the base ring seat, a second annular boss along the circumferential direction on the end face opposite to the sealing ring plate is arranged on the base ring seat, and the first annular boss and the second annular boss are mutually buckled and are in sealing fit.
2. The apparatus of claim 1, further comprising a first sealing member sleeved on the mounting cylinder and compressed between the sealing ring plate and the base ring seat.
3. The protection device for the explosion membrane of SF6 equipment of claim 2, wherein said outer peripheral wall of said fitting cylinder is provided with an external thread structure, and said inner peripheral wall of said base ring seat is provided with an internal thread structure, said external thread structure being screw-fitted with said internal thread structure.
4. The protection device for the explosion-proof membrane of SF6 equipment of claim 2, wherein an annular groove is circumferentially formed on the outer cylindrical wall of said assembly cylinder, said first sealing member has a clamping portion, and said clamping portion is clamped in said annular groove.
5. the protection device for the rupture disk of SF6 equipment according to any one of claims 1 to 4, wherein the sealing ring plate comprises a ring plate body coupled to the mounting cylinder and a cover plate detachably connected to the ring plate body, the ring plate body comprises a first mounting surface, the cover plate comprises a second mounting surface, the exhaust through hole comprises a first through hole arranged on the ring plate body, the protection member covers the first mounting surface and covers the first through hole, the first mounting surface is provided with an annular clamping groove inwards, the second mounting surface is provided with an annular clamping column outwards, the annular clamping column is in snap fit with the annular clamping groove, and the protection member is arranged between the first mounting surface and the second mounting surface in a pressing manner.
6. The device as claimed in claim 5, further comprising a second sealing element and a third sealing element, wherein the first mounting surface further comprises a first sealing groove surrounding the first through hole, the second mounting surface further comprises a second sealing groove opposite to the first sealing groove, the first sealing element is embedded in the first sealing groove, the protection element is disposed on the first sealing element, the second sealing element is embedded in the second sealing groove, and when the ring plate body is assembled with the cover plate, the protection element is disposed between the first sealing element and the second sealing element in a pressing manner.
7. The device for protecting an explosion-proof membrane of SF6 equipment of claim 5, wherein said annular clamping post is provided with a first thread, a groove wall of said annular clamping groove is provided with a second thread, and said first thread is screwed with said second thread.
8. The rupture disk protection device for SF6 apparatus as claimed in claim 1, wherein an anti-slip structure is provided on the outer ring wall of said base ring seat.
9. A protection mechanism comprising SF6 equipment and a protection device of the rupture disk of SF6 equipment as claimed in any one of claims 1 to 8, wherein the SF6 equipment is provided with a vent hole, a rupture disk is arranged in the vent hole, and the protection device of the rupture disk of SF6 equipment is hermetically covered on the rupture disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710169690.7A CN106949273B (en) | 2017-03-21 | 2017-03-21 | Protection device and protection mechanism for SF6 equipment rupture membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710169690.7A CN106949273B (en) | 2017-03-21 | 2017-03-21 | Protection device and protection mechanism for SF6 equipment rupture membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106949273A CN106949273A (en) | 2017-07-14 |
| CN106949273B true CN106949273B (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710169690.7A Active CN106949273B (en) | 2017-03-21 | 2017-03-21 | Protection device and protection mechanism for SF6 equipment rupture membrane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115978192B (en) * | 2023-01-10 | 2023-07-14 | 安徽美祥实业有限公司 | Framework structure sealing film and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR89600E (en) * | 1965-11-12 | 1967-07-13 | Lorraine Carbone | Glassy carbon-graphite or glassy carbon-amorphous carbon composite rupture disc |
| JPH07303311A (en) * | 1994-04-30 | 1995-11-14 | Nissin Electric Co Ltd | Pressure relief device for gas-filled switchgear |
| CN2694452Y (en) * | 2004-03-09 | 2005-04-20 | 广东四会互感器厂有限公司 | Sulfur hexafluoride current transformer |
| CN202855528U (en) * | 2012-06-05 | 2013-04-03 | 安徽省电力公司马鞍山供电公司 | Explosion-proof membrane protective cover of power grid SF6 current transformer |
| CN204558987U (en) * | 2015-04-14 | 2015-08-12 | 山东电工电气日立高压开关有限公司 | A kind of rupture pressure disc structure |
| CN205211824U (en) * | 2015-12-21 | 2016-05-04 | 广东九九华立新材料股份有限公司 | Battery blast resistant construction |
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