CN112582204B - Arc extinguishing chamber unit for gas-filled cabinet - Google Patents
Arc extinguishing chamber unit for gas-filled cabinet Download PDFInfo
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- CN112582204B CN112582204B CN202011406660.1A CN202011406660A CN112582204B CN 112582204 B CN112582204 B CN 112582204B CN 202011406660 A CN202011406660 A CN 202011406660A CN 112582204 B CN112582204 B CN 112582204B
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- extinguishing chamber
- arc
- outlet seat
- movable
- rod
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- 230000003068 static effect Effects 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 12
- 230000005684 electric field Effects 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 11
- 230000005404 monopole Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The present invention relates to an arc extinguishing chamber unit for an air charging cabinet. The arc-extinguishing chamber unit for the inflatable cabinet is used for being assembled in a closed space in the inflatable cabinet and comprises a vacuum arc-extinguishing chamber, wherein the front end and the rear end of the vacuum arc-extinguishing chamber are respectively a movable end and a static end, and the movable end is provided with a movable conducting rod; further comprises: the movable end wire outlet seat is provided with a guide hole which extends along the front-back direction; the conductive sliding block is assembled in the guide hole in a guiding way and is electrically connected with the movable end wire outlet seat through a touch guide, and the conductive sliding block is fixed on the movable conductive rod; the static end outlet seat is arranged at intervals in front and back of the movable end outlet seat and is fixedly connected with the static end of the vacuum arc extinguishing chamber; arc extinguishing chamber supporting rods are uniformly distributed around the vacuum arc extinguishing chambers, and two ends of each arc extinguishing chamber supporting rod are fixedly connected with the movable end outlet seat and the static end outlet seat respectively. The scheme can solve the problems of electric field distribution and partial discharge performance of the arc extinguish chamber unit for the existing inflatable cabinet, and has low cost and good heat dissipation.
Description
Technical Field
The present invention relates to an arc extinguishing chamber unit for an air charging cabinet.
Background
The existing breaker unit for the inflatable cabinet generally comprises an operating mechanism and an arc-extinguishing chamber unit, wherein the operating mechanism is arranged outside the inflatable cabinet, the arc-extinguishing chamber unit is arranged inside the inflatable cabinet, the arc-extinguishing chamber unit is isolated from the outside of the cabinet body through a corrugated pipe and is connected with the operating mechanism through an insulating pull rod in a transmission manner, the influence of severe environment on a vacuum arc-extinguishing chamber in the arc-extinguishing chamber unit can be avoided, and the service life of the vacuum arc-extinguishing chamber is prolonged. The vacuum arc-extinguishing chambers of each phase are generally in the form of solid-sealed polar columns or insulating cylinders, and are used as an integral monopole.
An arc-extinguishing chamber unit for an inflatable cabinet of a vacuum arc-extinguishing chamber in an insulating cylinder form is of a structure adopted by a pole type vacuum load switch for an inflatable ring main unit, disclosed in Chinese patent publication No. CN203733703U, wherein an upper wire outlet seat and a lower wire outlet seat are integrally cast in the insulating cylinder, the upper wire outlet seat is used for being connected with a movable end of the vacuum arc-extinguishing chamber through soft connection, and the lower wire outlet seat is used for being connected with a static end of the vacuum arc-extinguishing chamber. In order to facilitate heat dissipation, the insulating cylinder is provided with heat dissipation holes; in order to firmly fix the vacuum arc-extinguishing chamber, a nylon sleeve is arranged in the insulating cylinder, and the movable end of the vacuum arc-extinguishing chamber is fixed on the nylon sleeve; in order to avoid the problem of nonuniform electric field at the soft connection position, a shielding cover is arranged at the periphery of the connection part of the insulating pull rod and the movable end of the vacuum arc-extinguishing chamber.
However, in the case of a vacuum interrupter in the form of a solid-sealed pole or an insulating cylinder, the shape of the outer insulator or the insulating cylinder of the solid-sealed pole is irregular, which easily affects the electric field distribution and partial discharge performance, and thus affects the reliability. In addition, the solid-sealed polar pole and the insulating cylinder need to be poured with epoxy resin, so that the material consumption is high, and the manufacturing cost is high. And, due to the limitation of the self structural characteristics, the heat dissipation performance is difficult to improve.
Disclosure of Invention
The invention aims to provide an arc-extinguishing chamber unit for an inflatable cabinet, which solves the problems of electric field distribution and partial discharge performance easily occurring in the existing arc-extinguishing chamber unit for the inflatable cabinet.
The invention adopts the following technical scheme:
the arc-extinguishing chamber unit for the inflatable cabinet is used for being assembled in a closed space in the inflatable cabinet and comprises a vacuum arc-extinguishing chamber, wherein the front end and the rear end of the vacuum arc-extinguishing chamber are respectively a movable end and a static end, and the movable end is provided with a movable conducting rod;
further comprises:
the movable end wire outlet seat is provided with a guide hole which extends along the front-back direction;
the conductive sliding block is assembled in the guide hole in a guiding way and is electrically connected with the movable end wire outlet seat through a touch guide, and the conductive sliding block is fixed on the movable conductive rod;
the static end outlet seat is arranged at intervals in front and back of the movable end outlet seat and is fixedly connected with the static end of the vacuum arc extinguishing chamber;
arc extinguishing chamber supporting rods are uniformly distributed around the vacuum arc extinguishing chambers, and two ends of each arc extinguishing chamber supporting rod are fixedly connected with the movable end outlet seat and the static end outlet seat respectively.
The beneficial effects are that: by adopting the technical scheme, the movable end wire outlet seat and the static end wire outlet seat are arranged at intervals front and back, the movable end wire outlet seat and the static end wire outlet seat are fixedly connected through the arc-extinguishing chamber supporting rods, the arc-extinguishing chamber supporting rods are uniformly distributed around the vacuum arc-extinguishing chamber, the structure is regular, the influence on electric field distribution and partial discharge performance can be reduced, the whole monopole belongs to an open structure, and the monopole can be directly and fully contacted with gas in a gas tank, so that the heat dissipation effect is good, the structure is simple, and the cost is low; meanwhile, the vacuum arc-extinguishing chamber can be assembled in the guide hole on the movable end wire outlet seat in a guiding manner through the conductive sliding block fixed on the movable conductive rod, and the movable conductive rod is connected with the movable end wire outlet seat through the touch guide, so that the fixed requirement of the vacuum arc-extinguishing chamber and the guide requirement of the movable conductive rod can be met at the same time, and the structure is simple.
As a preferred technical scheme: the conductive sliding block is of a cylindrical structure, and a supporting plate is arranged in the conductive sliding block, so that the longitudinal section of the conductive sliding block is H-shaped;
the support plate is provided with a pull rod perforation, the rear end of the insulation pull rod is provided with a small-diameter section, the small-diameter section forms a shaft shoulder at the rear end of the insulation pull rod, and the shaft shoulder is used for being pressed on the front side surface of the support plate backwards; and the small-diameter section is provided with external threads, and the external threads are used for penetrating through the pull rod through holes and are connected to the threaded holes in the front end of the movable conducting rod.
The beneficial effects are that: by adopting the technical scheme, the fixed and conductive connection of the movable conductive rod and the conductive sliding block can be realized simultaneously after the insulating pull rod is fixedly connected with the movable conductive rod, so that the electric field uniformity is improved, and the assembly is convenient.
As a preferred technical scheme: the part of the conductive sliding block, which is positioned behind the supporting plate, is of a flaring conical structure, and the front end of the movable conductive rod is of a necking conical structure and has the same taper as the conical structure on the conductive sliding block.
The beneficial effects are that: by adopting the technical scheme, the fixing reliability of the movable conducting rod and the conductive sliding block is improved, the contact area of the movable conducting rod and the conductive sliding block can be increased, the through-flow effect is ensured, and the heating value is reduced.
As a preferred technical scheme: the movable end outlet seat comprises a plate-shaped main body and an outer convex cylinder body, wherein the outer convex cylinder body is arranged on at least one side of the plate-shaped main body and is used for forming the guide hole together with a through hole in the plate-shaped main body.
The beneficial effects are that: by adopting the technical scheme, the guide length can be increased, the guide performance is ensured, and the material consumption of the movable end wire outlet seat can be avoided.
As a preferred technical scheme: the rear side of the plate-shaped main body is provided with the convex cylinder body, and the plate-shaped main body is also provided with radiating fins at the rear side of the plate-shaped main body.
The beneficial effects are that: by adopting the technical scheme, the radiating fin can effectively utilize the space at the outer convex cylinder body, and the radiating performance is further improved.
As a preferred technical scheme: the arc-extinguishing chamber unit for the gas-filled cabinet further comprises an arc-extinguishing chamber bracket, wherein the arc-extinguishing chamber bracket is of a cylindrical structure, and an inner cavity is used for accommodating an insulating pull rod;
the front end of the arc extinguish chamber bracket is provided with a connecting plate fixing structure which is used for being fixed on a cabinet body connecting plate, and the cabinet body connecting plate is a connecting plate which is used for being fixed on a cabinet body of the inflatable cabinet;
the rear end of the arc extinguish chamber bracket is provided with an outlet seat fixing structure which is used for being fixed on the movable end outlet seat.
The beneficial effects are that: by adopting the technical scheme, the movable end wire outlet seat is convenient to assemble and fix, and the structure is simple.
As a preferred technical scheme: the front side of the movable end wire outlet seat is provided with radiating fins, the cylinder wall of the arc extinguishing chamber bracket is provided with radiating holes, and at least one radiating hole corresponds to the radiating fins.
The beneficial effects are that: by adopting the technical scheme, the heat dissipation effect is guaranteed.
As a preferred technical scheme: and the front side and/or the rear side of the static end outlet seat is/are provided with radiating fins.
The beneficial effects are that: by adopting the technical scheme, the heat dissipation performance of the static end outlet seat can be improved.
As a preferred technical scheme: the arc-extinguishing chamber supporting rod is a round rod manufactured by a vacuum gum dipping forming process.
The beneficial effects are that: the technical scheme adopted has the advantages of mature technology, low cost and good structural strength.
As a preferred technical scheme: metal threaded inserts are arranged at the two axial ends of the arc-extinguishing chamber supporting rod, and connecting holes are formed on the two end faces of the arc-extinguishing chamber supporting rod by the metal threaded inserts;
the movable end outgoing line seat and the static end outgoing line seat are provided with bolt perforations and are used for being fixedly connected with the arc-extinguishing chamber supporting rod through bolts and metal threaded inserts.
The beneficial effects are that: the metal threaded insert is convenient to manufacture, simple in structure and convenient to fix.
Drawings
Fig. 1 is a perspective view showing a combination state of an operation mechanism and an embodiment 1 of an arc extinguishing chamber unit for a gas-filled tank according to the present invention;
fig. 2 is a front view of the arc chute unit for the air tank of fig. 1;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a partial enlarged view at B in FIG. 4;
FIG. 6 is a schematic view of the structure of the front outlet base;
FIG. 7 is a schematic view of the structure of the rear outlet block;
fig. 8 is a schematic diagram of a connection structure of the arc extinguishing chamber bracket and the movable end outlet seat;
fig. 9 is a left side view of fig. 8.
The names of the corresponding components in the figures are: 11. a vacuum arc extinguishing chamber; 12. a movable conductive rod; 20. a cabinet body connecting plate; 21. a seal ring; 31. an operating mechanism; 32. a fixed rod; 33. a bellows; 34. an insulating pull rod; 35. a driving rod; 40. arc extinguishing chamber support; 41. a heat radiation hole; 42. an inner boss; 50. a movable end outlet seat; 51. a plate-shaped body; 52. a convex cylinder; 53. a guide hole; 54. watchband contact fingers; 55. a conductive slider; 56. a support plate; 60. a static end outlet seat; 61. a screw; 70. a heat radiation fin; 80. arc extinguishing chamber supporting rod.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It is noted that relational terms such as first and second, and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises a depicted element.
In the description of the present invention, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
In the description of the present invention, unless explicitly stated and limited otherwise, the term "provided" as may occur, for example, as an object of "provided" may be a part of a body, may be separately arranged from the body, and may be connected to the body, and may be detachably connected or may be non-detachably connected. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
The present invention is described in further detail below with reference to examples.
Embodiment 1 of the arc extinguishing chamber unit for a gas-filled tank in the present invention:
as shown in fig. 1 to 4, the arc extinguishing chamber unit for the gas charging cabinet includes a vacuum arc extinguishing chamber 11, and further includes a cabinet body connection plate 20, an arc extinguishing chamber bracket 40, a movable end outlet seat 50, a stationary end outlet seat 60, and an arc extinguishing chamber support bar 80. The vacuum interrupter 11 is provided with three, forming three monopoles. As a known structure, the front and rear ends of the vacuum interrupter 11 are respectively a movable end and a stationary end, and the movable end is provided with a movable conductive rod 12.
As shown in fig. 2, 3 and 4, the cabinet connecting plate 20 is used for being fixed on the cabinet body of the inflatable cabinet, and the inner side of the cabinet connecting plate is provided with a sealing ring 21 which can form sealing fit with the side wall of the cabinet body of the inflatable cabinet. The operating mechanism 31 is fixedly connected to the left side of the cabinet connecting plate 20 in the figure through a fixing rod 32 and can be independently detached. As shown in fig. 5, the operating mechanism 31 is connected with a driving rod 35, a limit boss is arranged on the driving rod 35, the limit boss is welded and fixed with the front end of the corrugated tube 33 and sealed, and the rear end of the corrugated tube 33 is connected with an opening on the cabinet connecting plate 20 and sealed with the cabinet connecting plate 20, so that the vacuum arc-extinguishing chamber 11 is positioned in the inner cavity of the closed inflatable cabinet. The driving rod 35 moves back and forth under the driving of the operating mechanism 31 and compresses or stretches the bellows 33, and the bellows 33 is used for maintaining the closed environment in the cabinet. The operating mechanism 31 may be of the prior art, irrespective of the technical solution to be protected by the present invention, and will not be described in detail here.
As shown in fig. 4, the rear side of the cabinet connecting plate 20 is connected with an arc-extinguishing chamber bracket 40, the arc-extinguishing chamber bracket 40 has a cylindrical structure, and an inner cavity is used for accommodating the insulating pull rod 34. The front end of the arc chute bracket 40 is provided with a flange forming a connection plate fixing structure for fixing to the cabinet connection plate 20. As shown in fig. 8 and 9, the rear end of the arc extinguishing chamber bracket 40 is provided with two inner bosses 42, the inner bosses 42 extend to the inner side of the arc extinguishing chamber bracket 40, and are provided with bolt holes in the form of inner flanges, forming a wire outlet seat fixing structure for being fixed to the movable end wire outlet seat 50 by screws.
The movable end outlet seat 50 is used for realizing the outlet of the movable end of the vacuum arc-extinguishing chamber 11, and is also used for realizing the support of the movable end of the vacuum arc-extinguishing chamber 11 and the guide of the movable conducting rod 12. As shown in fig. 6, the movable-end outlet 50 includes a plate-like body 51 and an outer cylindrical body 52, the outer cylindrical body 52 being provided at the rear side of the plate-like body 51 for forming a guide hole 53 together with a through hole in the plate-like body 51. The guide hole 53 extends in the front-rear direction, and is provided with a finger-touching groove on the inner wall thereof, and a watchband finger 54 is mounted in the finger-touching groove for guiding and mounting and electrically connecting the corresponding conductive slider 55. The conductive sliding block 55 is of a cylindrical structure, a supporting plate 56 is arranged inside the conductive sliding block 55, and the supporting plate 56 is located at the axial middle part of the conductive sliding block 55, so that the longitudinal section of the conductive sliding block 55 is H-shaped. Of course, in other embodiments, the support plate 56 may be located at the front end of the conductive slider 55, or at the rear end of the conductive slider 55. As shown in fig. 4, the supporting plate 56 is provided with a pull rod perforation, the rear end of the insulation pull rod 34 is provided with a small-diameter section, the small-diameter section forms a shaft shoulder at the rear end of the insulation pull rod 34, and the shaft shoulder is used for being pressed on the front side surface of the supporting plate 56 backwards; the small diameter section is provided with external threads which are used for penetrating through the pull rod through holes and connecting to the threaded holes at the front end of the movable conducting rod 12. The part of the conductive sliding block 55 behind the supporting plate 56 is in a flaring conical structure, the front end of the movable conductive rod 12 is in a necking conical structure, the movable conductive rod 12 is tensioned after the insulating pull rod 34 is screwed into the movable conductive rod 12, and good conductive contact between the movable conductive rod 12 and the conductive sliding block 55 is realized by means of the conical structure. Of course, the movable terminal outlet seat 50 is made of metal.
The plate-like body 51 is provided with heat radiating fins 70 on both the rear side and the front side of the plate-like body 51, and the heat radiating fins 70 on the rear side and the outer cylindrical body 52 on the rear side use the space on the rear side of the plate-like body 51 together. The wall of the arc extinguishing chamber bracket 40 is provided with heat dissipation holes 41, and part of the heat dissipation holes 41 correspond to the heat dissipation fins 70 on the front side of the plate-shaped main body 51 to form an air flow path which penetrates up and down, thereby facilitating heat dissipation.
The static end wire outlet seat 60 and the movable end wire outlet seat 50 are arranged at intervals in front and back, and in order to fix the vacuum arc extinguishing chamber 11, as shown in fig. 4, a screw hole is arranged in the middle of the static end wire outlet seat 60 for fixedly connecting the static end of the vacuum arc extinguishing chamber 11. As shown in fig. 2 and 7, the stationary outlet block 60 is also provided with heat radiating fins 70 on the front and rear sides, similar to the moving outlet block 50. Meanwhile, in order to facilitate the installation of the screw 61, the radiating fin 70 in the middle of the rear side of the stationary-end outlet seat 60 is shorter in size, and a disassembly and assembly space is reserved for the screw 61. Of course, the stationary outlet seat 60 is made of metal.
Four arc-extinguishing chamber supporting rods 80 are uniformly distributed around the vacuum arc-extinguishing chamber 11, and two ends of each arc-extinguishing chamber supporting rod 80 are fixedly connected with the movable end wire outlet seat 50 and the static end wire outlet seat 60 respectively. Specifically, the arc-extinguishing chamber supporting rod 80 is a round rod made by a vacuum impregnation molding process, is made of an insulating material, and is provided with metal threaded inserts at two axial ends, wherein the metal threaded inserts form connecting holes on two end surfaces of the arc-extinguishing chamber supporting rod 80; the movable end outlet seat 50 and the stationary end outlet seat 60 are provided with bolt perforations for fixedly connecting with the arc-extinguishing chamber supporting rod 80 through bolts and metal threaded inserts. The vacuum gum dipping forming process is the existing process, has mature technology and low cost, and is beneficial to controlling the overall cost of the arc extinguishing chamber unit for the air charging cabinet.
During assembly, the vacuum arc-extinguishing chamber 11 is fixedly connected with the conductive sliding block 55 through the insulating pull rod 34, and is led out by virtue of the front outlet seat and the rear outlet seat, and the front outlet seat and the rear outlet seat are led out to respectively realize the leading-out of the movable end and the static end of the vacuum arc-extinguishing chamber 11. In operation, the operating mechanism 31 drives the movable conducting rod 12 to act through the insulating pull rod 34, so that the switching-on and switching-off operation of the vacuum arc-extinguishing chamber 11 is realized.
In the above embodiment, the movable-end outlet seat 50 includes the plate-shaped main body 51 and the outer protruding cylinder 52 at the rear side, so that the material consumption can be reduced while the guiding fit length is increased, and the heat dissipation is facilitated; in other embodiments, the outer cylinder 52 may be provided on the front side of the plate-shaped body 51 alone or on both the front and rear sides of the plate-shaped body 51, or the thickness of the plate-shaped body 51 may be increased without providing the outer cylinder 52. In addition, in the above embodiment, the arc extinguishing chamber supporting rod 80 is fixed to the movable end outlet seat 50 and the stationary end outlet seat 60 by means of metal threaded inserts at the ends, and in other embodiments, flanges may be provided at both ends of the arc extinguishing chamber supporting rod 80, and connected by flanges. In the above embodiment, the conductive slider 55 is connected to the movable conductive rod 12 through the insulating rod 34, and in other embodiments, both ends of the conductive slider 55 may be connected to the insulating rod 34 and the movable conductive rod 12, for example, screwed to the insulating rod 34 and the movable conductive rod 12, respectively.
The above description is only a preferred embodiment of the present application, and is not intended to limit the present application, and the patent protection scope of the present application is defined by the claims, and all equivalent structural changes made by the specification and the attached drawings of the present application should be included in the protection scope of the present application.
Claims (9)
1. The arc-extinguishing chamber unit for the inflatable cabinet is used for being assembled in a closed space in the inflatable cabinet and comprises a vacuum arc-extinguishing chamber (11), wherein the front end and the rear end of the vacuum arc-extinguishing chamber (11) are respectively a movable end and a static end, and the movable end is provided with a movable conducting rod (12);
characterized by further comprising:
a movable end wire outlet seat (50) provided with a guide hole (53), wherein the guide hole (53) extends along the front-back direction;
the conductive sliding block (55) is assembled in the guide hole (53) in a guiding way and is electrically connected with the movable end wire outlet seat (50) through a touch guide, and the conductive sliding block (55) is fixed on the movable conductive rod (12);
the static end outlet seat (60) is arranged at intervals in front and back of the movable end outlet seat (50) and is fixedly connected with the static end of the vacuum arc-extinguishing chamber (11);
arc-extinguishing chamber supporting rods (80) are uniformly distributed around the vacuum arc-extinguishing chambers (11), and two ends of each arc-extinguishing chamber supporting rod (80) are fixedly connected with the movable end wire outlet seat (50) and the static end wire outlet seat (60) respectively; the movable end wire outlet seat (50) comprises a plate-shaped main body (51) and an outer convex cylinder body (52), wherein the outer convex cylinder body (52) is arranged on at least one side of the plate-shaped main body (51) and is used for forming the guide hole (53) together with a through hole on the plate-shaped main body (51).
2. The arc extinguishing chamber unit for the gas charging cabinet according to claim 1, wherein the conductive slider (55) has a cylindrical structure, a support plate (56) is provided inside, and the support plate (56) makes the longitudinal section of the conductive slider (55) be H-shaped;
the support plate (56) is provided with a pull rod perforation, the rear end of the insulation pull rod (34) is provided with a small-diameter section, the small-diameter section forms a shaft shoulder at the rear end of the insulation pull rod (34), and the shaft shoulder is used for being pressed on the front side surface of the support plate (56) backwards; the small-diameter section is provided with external threads which are used for penetrating through the pull rod through holes and connecting to the threaded holes at the front end of the movable conducting rod (12).
3. The arc extinguishing chamber unit for the gas charging cabinet according to claim 2, wherein the part of the conductive sliding block (55) located behind the supporting plate (56) is in a flaring conical structure, and the front end of the movable conductive rod (12) is in a necking conical structure and has the same taper as the conical structure on the conductive sliding block (55).
4. An arc extinguishing chamber unit for an air charging cabinet according to claim 1, 2 or 3, characterized in that the rear side of the plate-shaped body (51) is provided with the outer protruding cylinder (52), and the plate-shaped body (51) is further provided with heat radiating fins (70) on the rear side of the plate-shaped body (51).
5. An arc chute unit for a gas-filled cabinet according to claim 1, 2 or 3, characterized in that the arc chute unit for a gas-filled cabinet further comprises an arc chute support (40), the arc chute support (40) being of a cylindrical structure, an inner cavity for accommodating an insulating tie rod (34);
the front end of the arc extinguishing chamber bracket (40) is provided with a connecting plate fixing structure for being fixed on a cabinet connecting plate (20), and the cabinet connecting plate (20) is a connecting plate for being fixed on a cabinet body of the inflatable cabinet;
the rear end of the arc extinguishing chamber bracket (40) is provided with an outlet seat fixing structure which is used for being fixed on the movable end outlet seat (50).
6. The arc extinguishing chamber unit for the gas charging cabinet according to claim 5, wherein a radiating fin (70) is arranged on the front side of the movable end outlet seat (50), a radiating hole (41) is arranged on the cylinder wall of the arc extinguishing chamber bracket (40), and at least one radiating hole (41) corresponds to the radiating fin (70).
7. An arc chute unit for an air-filled cabinet according to claim 1 or 2 or 3, wherein the front side and/or the rear side of the stationary outlet seat (60) is provided with heat radiating fins (70).
8. An arc chute unit for an air cabinet according to claim 1 or 2 or 3, wherein the arc chute support bar (80) is a round bar made by a vacuum impregnation molding process.
9. An arc extinguishing chamber unit for an inflatable cabinet according to claim 1, 2 or 3, characterized in that the two axial ends of the arc extinguishing chamber supporting rod (80) are provided with metal threaded inserts, and the metal threaded inserts form connecting holes on the two end surfaces of the arc extinguishing chamber supporting rod (80);
the movable end wire outlet seat (50) and the static end wire outlet seat (60) are provided with bolt perforations and are used for being fixedly connected with the arc-extinguishing chamber supporting rod (80) through bolts and metal threaded inserts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406660.1A CN112582204B (en) | 2020-12-04 | 2020-12-04 | Arc extinguishing chamber unit for gas-filled cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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