CN213303983U - Load switch for inflating cabinet - Google Patents

Abstract

The utility model relates to the technical field of power equipment, a aerify load switch for cabinet is disclosed, which comprises a transparent shell, a separation plate, the moving contact, first static contact, the second static contact, pivot and moving contact insulating boot, the parallel spaced setting of length direction of baffle along transparent shell is on transparent shell's internal perisporium, all be filled with sulfur hexafluoride gas in the arc extinguishing compartment, the rotatable setting of pivot is in transparent shell, the moving contact sets up on the periphery wall of pivot, moving contact insulating boot detachable cover locates the both ends of moving contact respectively, first static contact and second static contact set up relatively respectively on the periphery wall of arc extinguishing compartment, and the both ends of moving contact are equallyd divide and do not can dismantle the electricity with the lower tip of first static contact and second static contact and be connected. The technical scheme of the utility model can improve load switch's insulation and arc extinguishing performance, and the power of opening and shutting is strong, long service life, and is easy and simple to handle, and simple structure, low cost, the practicality is strong.

Description

Load switch for inflating cabinet

Technical Field

The utility model relates to a power equipment, in particular to aerify load switch for cabinet.

Background

The gas-filled cabinet is indoor alternating-current high-voltage gas insulated metal-enclosed switchgear, is a new generation of switchgear, a main switch can be a permanent magnet mechanism vacuum circuit breaker or a spring mechanism vacuum circuit breaker, the whole cabinet is combined with a sulfur hexafluoride gas compartment in an air insulation mode, and the gas-filled cabinet is compact and expandable and is suitable for distribution automation. The inflatable cabinet has the characteristics of compact structure, flexible operation, reliable interlocking and the like, and can provide satisfactory technical schemes for various application occasions (particularly places with severe environment) and different user requirements. The adoption of sensing technology and the latest protective relay, together with advanced technical performance and a light and flexible assembly scheme, can completely meet different requirements of users. The inflatable cabinet is suitable for small-sized secondary substations, switching stations, box-type substations, residential districts, industrial and mining enterprises and large markets of power systems, and is particularly suitable for occasions with higher requirements on electricity consumption, such as airports, subways, railways and the like.

However, most of the existing load switches for the gas-filled cabinets have complex structures, complicated switching-on and switching-off operations of moving contacts and static contacts, unsatisfactory insulation and arc extinguishing performances, and easy generation of electric arcs when the contacts are switched off, which causes difficulty in breaking circuits.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an aerify load switch for cabinet aims at solving the current load switch who is used for aerifing the cabinet and exists the structure complicacy, moves, static contact switch-on and disconnection complex operation, and insulating, arc extinguishing performance ideal inadequately, produces electric arc easily when the contact is cut off, leads to the technical problem that the circuit is difficult to divide absolutely.

In order to achieve the above object, the utility model provides a load switch for gas-filled tank, including transparent shell, baffle, moving contact, first static contact, second static contact, pivot and moving contact insulating boot, the appearance of transparent shell is the cylindrical barrel structure setting, the moving contact is the rod-shaped structure setting, the baffle is provided with two, the baffle is along the length direction parallel interval of transparent shell set up on the internal perisporium of transparent shell, and will divide into three arc extinguishing compartments transparent shell is inside, all be filled with sulfur hexafluoride gas in the arc extinguishing compartment, the pivot is rotatable to be set up in the transparent shell, the moving contact is along the length direction of pivot parallel interval respectively and detachable set up on the periphery wall of pivot, and rotate along with the pivot, and the moving contact is rotatable respectively to be set up in the arc extinguishing compartment, the movable contact insulating bush is detachable respectively and is located the both ends setting of movable contact, first static contact and second static contact set up relatively respectively on the periphery wall of arc extinguishing compartment, first static contact and second static contact equally divide respectively through the screw with fixed connection can be dismantled to the periphery wall of casing, just first static contact and second static contact all lie in the coplanar setting, the lower tip of first static contact and second static contact is equallyd divide and is do not stretched into the inside setting of arc extinguishing compartment, just the both ends of movable contact equally divide respectively can with the lower tip of first static contact and second static contact can dismantle the electricity and be connected.

Furthermore, the lower end parts of the first static contact and the second static contact are respectively provided with a first open slot in a concave manner, and the two ends of the moving contact are respectively detachably and slidably embedded in the first open slot.

Further, the periphery wall of the upper end portion of the first opening groove is in an arc surface structure in an outer splayed shape, and the periphery wall of the upper end portion of the first opening groove is uniformly provided with a second opening groove which is obliquely arranged in a concave mode.

Furthermore, the movable contact device further comprises a first bolt, wherein the first bolt is detachably inserted into the two ends of the movable contact insulating sleeve and the two ends of the movable contact respectively, the inner side wall of the movable contact insulating sleeve is abutted to the outer peripheral wall of the rotating shaft respectively, and the movable contact insulating sleeve is detachably and fixedly connected with the movable contact through the first bolt.

Furthermore, two side walls of the moving contact insulating sleeve are respectively provided with a side plate in an opposite manner, the upper end part of the moving contact insulating sleeve is respectively provided with a third opening groove in a concave manner, two end parts of the moving contact are respectively arranged in the third opening groove in a protruding manner, and the lower end parts of the first static contact and the second static contact can respectively rotate along the third opening groove.

Further, still include C type jump ring, the both ends of pivot are rotatable respectively stretch out set up outside transparent housing's the both ends wall, the periphery wall at the both ends of pivot is concave respectively and is equipped with a draw-in groove that extends along the circumferencial direction, C type jump ring detachable card is located respectively set up in the draw-in groove, just the inside wall of C type jump ring equally divide do not with the rotatable butt setting of transparent housing's both ends wall.

The rotary knob comprises a rotary knob body, a front end portion of the rotary knob body is convexly provided with an inserting portion, the end portion of the rotary shaft is provided with a second bolt along the radial direction, a fourth opening groove is concavely formed in the front end portion of the inserting portion, the inserting portion is detachably inserted into the end portion of the rotary shaft, and the second bolt is detachably embedded in the fourth opening groove.

Furthermore, an end cover is arranged at the front end part of the knob, a containing groove is concavely arranged at the end part of the transparent shell, the end cover is detachably embedded in the containing groove, and the inserting part is rotatably arranged on the end cover in a penetrating mode.

The movable contact insulating sleeve is arranged on the inner peripheral wall of the transparent shell, the movable contact insulating sleeve is arranged between the lower end portions of the first static contact and the second static contact, and the movable contact insulating sleeve is connected with the movable contact insulating sleeve in an abutting mode.

Furthermore, a plurality of wiring holes are respectively formed in the upper end portions of the first static contact and the second static contact.

Adopt the technical scheme of the utility model, following beneficial effect has: the technical scheme of the utility model, through the parallel interval setting of baffle along the length direction of transparent housing on the internal perisporium of transparent housing, and divide transparent housing internal part into three arc extinguishing compartments, all fill sulfur hexafluoride gas in the arc extinguishing compartment, the rotatable setting of pivot is in transparent housing, the moving contact is parallel interval respectively and detachably set up on the periphery wall of pivot along the length direction of pivot, and rotate with the pivot, and the moving contact is rotatable respectively set up in the arc extinguishing compartment, the moving contact insulating bush is detachable cover respectively and is located the both ends of moving contact and sets up, first static contact and second static contact are relative to be set up respectively on the periphery wall of arc extinguishing compartment, first static contact and second static contact are respectively through the detachable fixed connection of screw with the periphery wall of housing, and first static contact and second static contact all lie in the coplanar setting, the lower end parts of the first static contact and the second static contact respectively extend into the arc extinguishing compartment, and two ends of the moving contact can be detachably abutted and electrically connected with the lower end parts of the first static contact and the second static contact.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a load switch for an inflatable cabinet according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a load switch for an inflatable cabinet according to an embodiment of the present invention;

fig. 3 is a schematic view of a partially exploded structure of a load switch for an inflatable cabinet according to an embodiment of the present invention;

fig. 4 is a schematic partial structural view of a load switch for an inflatable cabinet according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a first fixed contact of a load switch for an air-filled cabinet according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a knob of a load switch for an inflatable cabinet according to an embodiment of the present invention.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

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

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a aerify load switch for cabinet.

As shown in fig. 1 to 6, in an embodiment of the present invention, the load switch for an air-filled cabinet includes a transparent casing 101, a partition plate 102, a movable contact 103, a first fixed contact 104, a second fixed contact 105, a rotating shaft 106, and a movable contact insulating sleeve 107, the transparent casing 101 is configured in a cylindrical tube structure, the movable contact 103 is configured in a rod structure, two of the partition plates 102 are disposed on an inner peripheral wall of the transparent casing 101 along a length direction of the transparent casing 101 at intervals in parallel, and divides the inside of the transparent casing 101 into three arc extinguishing compartments 1011, the arc extinguishing compartments 1011 are filled with sulfur hexafluoride gas, the rotating shaft 106 is rotatably disposed in the transparent casing 101, the movable contact 103 is disposed on an outer peripheral wall of the rotating shaft 106 along a length direction of the rotating shaft 106 at intervals in parallel and detachably, the movable contact insulating sleeve 107 is detachably sleeved at two ends of the movable contact 103, the first fixed contact 104 and the second fixed contact 105 are respectively and oppositely arranged on the outer peripheral wall of the arc extinguishing compartment 1011, the first fixed contact 104 and the second fixed contact 105 are respectively and fixedly connected with the outer peripheral wall of the shell 101 through screws 108, the first fixed contact 104 and the second fixed contact 105 are both arranged on the same plane, the lower end portions of the first fixed contact 104 and the second fixed contact 105 are respectively and fixedly extended into the arc extinguishing compartment 1011, and two ends of the movable contact 103 are respectively and detachably and electrically connected with the lower end portions of the first fixed contact 104 and the second fixed contact 105.

Specifically, the lower end portions of the first fixed contact 104 and the second fixed contact 105 are respectively provided with a first opening groove 109 in a concave manner, and the two ends of the movable contact 103 are respectively detachably and slidably embedded in the first opening groove 109, so that the end portion of the movable contact can be conveniently clamped into the first opening groove.

Specifically, the periphery wall of the 109 upper end portion of the first opening groove is in an arc surface structure in an outward splayed shape, and the periphery wall of the upper end portion of the first opening groove 109 is uniformly provided with a second opening groove 110 which is obliquely arranged in a concave mode, so that the end portion of the movable contact can be clamped into the first opening groove conveniently, and the end portion of the movable contact can be clamped into the first opening groove more smoothly.

Specifically, the device further comprises a first pin 111, the first pin 111 is detachably inserted into two ends of the movable contact insulating sleeve 107 and the movable contact 103, an inner side wall of the movable contact insulating sleeve 107 is abutted to an outer peripheral wall of the rotating shaft 106, and the movable contact insulating sleeve 107 is detachably and fixedly connected with the movable contact 103 through the first pin 111.

Specifically, two side walls of the movable contact insulating sleeve 107 are respectively provided with a side plate 1071 in an opposite manner, an upper end portion of the movable contact insulating sleeve 107 is respectively provided with a third opening groove 1072 in a concave manner, two end portions of the movable contact 103 are respectively arranged in the third opening groove 1072 in a convex manner, and lower end portions of the first static contact 104 and the second static contact 105 are respectively arranged in a manner of rotating along the third opening groove 1072.

Specifically, still include C type jump ring 112, the both ends of pivot 106 are rotatable respectively and stretch out the both ends wall of transparent casing 101 sets up outward, the periphery wall at the both ends of pivot 106 is concave respectively and is equipped with a draw-in groove 1061 that extends along the circumferencial direction, C type jump ring 112 is detachable card respectively and locates set up in draw-in groove 1061, just 112 inside walls of C type jump ring equally divide do not with the rotatable butt setting of both ends wall of transparent casing 101 plays fixed rotating shaft on transparent casing.

Specifically, the multifunctional rotating device further comprises a knob 113, a protruding insertion part 1131 is arranged at the front end part of the knob 113, a second bolt 1062 is arranged at the end part of the rotating shaft 106 along the radial direction, a fourth opening groove 1132 is concavely arranged at the front end part of the insertion part 1131, the insertion part 1131 is detachably inserted into the end part of the rotating shaft 103, the second bolt 1062 is detachably embedded into the fourth opening groove 1132, the movable contact is driven to rotate by rotating the knob, the connection, disconnection and grounding of three working positions are realized, the operation is simple and convenient, and the efficiency is improved.

Specifically, a cover 1133 is disposed at a front end of the knob 113, a receiving groove 1012 is recessed at an end of the transparent casing 101, the cover 1133 is detachably embedded in the receiving groove 1012, and the insertion part 1031 is rotatably disposed to penetrate through the cover 1133.

Specifically, the movable contact type static contact device further comprises a limiting plate 114, the limiting plate 114 is horizontally arranged on the inner peripheral wall of the transparent shell 101, the limiting plate 114 is located between the lower end portions of the first static contact 104 and the second static contact 105, and the movable contact insulating sleeves 107 can be respectively abutted to the limiting plate 114, so that a limiting effect is achieved, the rotation range of the movable contact is limited, and connection errors between the movable contact and the static contact are avoided.

Specifically, the upper end portions of the first fixed contact 104 and the second fixed contact 105 are respectively provided with a plurality of wiring holes 115, so as to be electrically connected with the main circuit through a cable.

Specifically, sulfur hexafluoride gas is a strong electronegative gas, and its molecules are very easy to adsorb free electrons to form negative ions with large mass, so that the impact ionization process in the gas is weakened, and therefore, its electrical insulation strength is very high, and is about 2.5 times of that of air in a uniform electric field.

Specifically, the baffle plates are arranged on the inner peripheral wall of the transparent shell in parallel at intervals along the length direction of the transparent shell, the inner part of the transparent shell is divided into three arc extinguishing compartments, sulfur hexafluoride gas is filled in the arc extinguishing compartments, the rotating shaft is rotatably arranged in the transparent shell, the moving contacts are respectively arranged on the outer peripheral wall of the rotating shaft in parallel at intervals along the length direction of the rotating shaft and can detachably rotate along with the rotating shaft, the moving contacts are respectively rotatably arranged in the arc extinguishing compartments, moving contact insulating sleeves are respectively detachably sleeved at two ends of the moving contacts, the first fixed contact and the second fixed contact are respectively and oppositely arranged on the outer peripheral wall of the arc extinguishing compartments, the first fixed contact and the second fixed contact are respectively and fixedly connected with the outer peripheral wall of the shell in a detachable mode through screws, the first fixed contact and the second fixed contact are both arranged on the same plane, and the lower end parts of the first fixed contact, the two ends of the moving contact can be respectively detachably abutted and electrically connected with the lower end parts of the first static contact and the second static contact, sulfur hexafluoride gas is used as an insulating and arc extinguishing medium, when the contact is disconnected, an electric arc cannot be generated due to the existence of the sulfur hexafluoride gas, a circuit is easily disconnected, the insulating and arc extinguishing performance of the load switch is improved, the disconnection force is strong, the service life is long, the connection, disconnection and grounding of three working positions are realized by rotating the knob, the operation is simple and convenient, the structure is simple, the cost is low, the practicability is strong, the moving contact can be used for switching on and switching off load current and overload current, and can also be used for switching on and switching off no-load circuits, no-load transformers, capacitor banks and the like.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (10)

1. A load switch for an inflatable cabinet is characterized by comprising a transparent shell, a partition plate, two moving contacts, a first fixed contact, a second fixed contact, a rotating shaft and two moving contact insulating sleeves, wherein the transparent shell is in a cylindrical barrel structure, the moving contacts are in a rod-shaped structure, the partition plate is arranged on the inner peripheral wall of the transparent shell in parallel at intervals along the length direction of the transparent shell and divides the interior of the transparent shell into three arc extinguishing compartments, sulfur hexafluoride gas is filled in the arc extinguishing compartments, the rotating shaft is rotatably arranged in the transparent shell, the moving contacts are respectively arranged on the outer peripheral wall of the rotating shaft in parallel at intervals along the length direction of the rotating shaft and are detachably arranged in the arc extinguishing compartments and rotate along with the rotating shaft, and the moving contacts are respectively rotatably arranged in the arc extinguishing compartments, the movable contact insulating bush is detachable respectively and is located the both ends setting of movable contact, first static contact and second static contact set up relatively respectively on the periphery wall of arc extinguishing compartment, first static contact and second static contact equally divide respectively through the screw with fixed connection can be dismantled to the periphery wall of casing, just first static contact and second static contact all lie in the coplanar setting, the lower tip of first static contact and second static contact is equallyd divide and is do not stretched into the inside setting of arc extinguishing compartment, just the both ends of movable contact equally divide respectively can with the lower tip of first static contact and second static contact can dismantle the electricity and be connected.

2. The load switch of claim 1, wherein the lower ends of the first and second stationary contacts are respectively recessed with a first opening slot, and the two ends of the moving contact are respectively detachably and slidably embedded in the first opening slot.

3. The load switch of claim 2, wherein the outer peripheral wall of the upper end portion of the first opening groove is formed in an arc-shaped structure, and a second opening groove is formed in the outer peripheral wall of the upper end portion of the first opening groove and is obliquely recessed.

4. The load switch for the inflatable cabinet as claimed in claim 1, further comprising a first plug pin, wherein the first plug pin is detachably inserted into two ends of the moving contact insulating sleeve and the moving contact, an inner side wall of the moving contact insulating sleeve is abutted against an outer peripheral wall of the rotating shaft, and the moving contact insulating sleeve is detachably and fixedly connected with the moving contact through the first plug pin.

5. The load switch of claim 1, wherein two opposite side walls of the movable contact insulating sleeve are respectively provided with a side plate, an upper end portion of the movable contact insulating sleeve is respectively provided with a third opening slot in a concave manner, two end portions of the movable contact are respectively arranged in the third opening slot in a convex manner, and lower end portions of the first static contact and the second static contact are respectively arranged in a rotatable manner along the third opening slot.

6. The load switch for the inflatable cabinet according to claim 1, further comprising a C-shaped clamp spring, wherein the two ends of the rotating shaft respectively extend out of the two end walls of the transparent shell in a rotatable manner, a clamping groove extending along the circumferential direction is respectively concavely formed in the peripheral walls of the two ends of the rotating shaft, the C-shaped clamp spring is respectively detachably clamped in the clamping groove, and the inner side wall of the C-shaped clamp spring is equally divided into the two end walls of the transparent shell in a rotatable abutting manner.

7. The load switch of claim 1, further comprising a knob, wherein an insertion portion is protruded at a front end of the knob, a second pin is disposed at an end of the rotating shaft along a radial direction, a fourth opening slot is concavely disposed at a front end of the insertion portion, the insertion portion is detachably inserted into the end of the rotating shaft, and the second pin is detachably inserted into the fourth opening slot.

8. The load switch of claim 7, wherein an end cap is disposed at a front end of the knob, a receiving groove is concavely disposed at an end of the transparent housing, the end cap is detachably inserted into the receiving groove, and the insertion portion is rotatably inserted into the end cap.

9. The load switch of claim 1, further comprising a limiting plate horizontally disposed on an inner peripheral wall of the transparent housing, wherein the limiting plate is disposed between lower ends of the first and second stationary contacts, and the movable contact insulating sleeve is disposed in contact with the limiting plate.

10. The load switch of claim 1, wherein the upper ends of the first stationary contact and the second stationary contact are respectively provided with a plurality of wiring holes.

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