CN220324349U - Quick grounding switch and gas-insulated fully-enclosed combined electrical appliance - Google Patents

Abstract

The utility model discloses a quick grounding switch and a gas-insulated fully-closed combined electrical appliance. The quick grounding switch comprises a shell, moving contact assemblies, a rotating shaft and a crank arm, wherein the moving contact assemblies are arranged in three, the three moving contact assemblies are arranged in the shell side by side, each moving contact assembly comprises a moving contact seat and a moving contact, each moving contact seat is fixedly arranged in the shell, and each moving contact penetrates through each moving contact seat and can move along the axial direction of each moving contact seat so that each moving contact is located at a closing position or a separating brake position; the rotating shaft is rotatably arranged on the shell; the turning arms are arranged in three, the three turning arms are arranged in one-to-one correspondence with the three moving contact assemblies, one end of each turning arm is fixedly connected with the rotating shaft, and when the rotating shaft rotates, the corresponding moving contact can be driven by the turning arms to move along the axial direction of the moving contact seat. The rapid grounding switch has the characteristics of miniaturization, simple structure, convenient assembly, small transmission action and the like, and can ensure that three phases are simultaneously subjected to opening and closing actions, and the opening and closing synchronism is high.

Description

Quick grounding switch and gas-insulated fully-enclosed combined electrical appliance

Technical Field

The utility model relates to the technical field of power engineering equipment, in particular to a quick grounding switch and a gas-insulated fully-closed combined electrical appliance.

Background

The rapid grounding switch is an important component in the gas-insulated fully-enclosed combined electrical appliance, and along with the increasing requirements of an electric power system on the electric energy quality, the high-voltage electrical equipment is correspondingly provided with higher requirements. Because the factors such as interval width, phase interval, synchronism, arrangement mode and cost optimization need to be considered in the design process of the quick grounding switch, the quick grounding switch in the prior art generally has the problems of large volume, complex structure, complex assembly process and the like.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the quick grounding switch which has the characteristics of miniaturization, simple structure and convenience in assembly.

The utility model also provides a gas-insulated fully-closed combined electrical appliance with the rapid grounding switch.

According to the embodiment of the first aspect of the utility model, the quick grounding switch comprises a shell, moving contact assemblies, a rotating shaft and a crank arm, wherein the moving contact assemblies are arranged in three, the three moving contact assemblies are arranged in the shell side by side, the moving contact assemblies comprise moving contact seats and moving contacts, the moving contact seats are fixedly arranged in the shell, and the moving contacts penetrate through the moving contact seats and can move along the axial direction of the moving contact seats so as to enable the moving contacts to be positioned at a closing position or a separating position; the rotating shaft is rotatably arranged on the shell; the turning arms are arranged in a one-to-one correspondence mode, the three turning arms are arranged with the three moving contact assemblies, one end of each turning arm is fixedly connected with the rotating shaft, and when the rotating shaft rotates, the corresponding moving contact can be driven by the turning arms to move along the axial direction of the moving contact seat.

The quick grounding switch provided by the embodiment of the utility model has at least the following beneficial effects: the three moving contact assemblies are arranged in the shell to form a common box type structure, so that the requirements of small interval width and phase spacing are met; and when the rotating shaft rotates, the three crank arms rotate simultaneously to directly drive the moving contact to perform opening and closing motions, so that the quick grounding switch has the characteristics of miniaturization, simple structure, convenience in assembly, small transmission action and the like, can ensure that three phases simultaneously perform opening and closing motions, and has high opening and closing synchronization.

According to some embodiments of the utility model, the housing is provided with an insulating base having a mounting plane, and three movable contact bases are mounted side by side on the mounting plane.

According to some embodiments of the utility model, a connecting seat is connected to one end of the moving contact, which is close to the crank arm, the crank arm is in transmission connection with the connecting seat, and the crank arm can drive the moving contact to move along the axial direction of the moving contact seat through the connecting seat.

According to some embodiments of the utility model, the connecting seat is provided with a bar-shaped hole, one end of the crank arm far away from the rotating shaft is provided with a driving piece, and the driving piece is arranged in the bar-shaped hole in a penetrating manner and can move along the length direction of the bar-shaped hole.

According to some embodiments of the utility model, the housing is provided with a plurality of grounding terminals, and the grounding terminals are respectively and electrically connected with the corresponding moving contacts.

According to some embodiments of the utility model, a quincuncial contact is installed in the movable contact base, and the quincuncial contact is electrically connected with the movable contact and the corresponding grounding terminal respectively.

According to some embodiments of the utility model, a guide ring is arranged in the movable contact seat, the plum blossom contact is arranged at one end of the guide ring, and the movable contact penetrates through the guide ring and the plum blossom contact.

According to some embodiments of the utility model, a transmission mechanism is connected to one end of the rotating shaft, and the transmission mechanism is used for being connected with a driving structure so as to enable the rotating shaft to rotate.

According to some embodiments of the utility model, the transmission mechanism comprises a first connecting rod, a second connecting rod and a third connecting rod, two ends of the second connecting rod are respectively hinged with the first connecting rod and the third connecting rod, the first connecting rod is fixedly connected with the rotating shaft, and the third connecting rod is used for being connected with the driving structure.

The gas-insulated fully-enclosed combined electrical apparatus according to the embodiment of the second aspect of the present utility model includes the fast grounding switch according to any one of the embodiments described above.

The gas-insulated fully-enclosed combined electrical apparatus provided by the embodiment of the utility model has at least the following beneficial effects: the gas-insulated fully-closed combined electrical appliance provided by the utility model has the characteristics of miniaturization, simple structure, convenience in assembly, small transmission action and the like by adopting the rapid grounding switch, and can meet the requirements of small interval width and phase spacing; and the three phases can be ensured to simultaneously perform switching-on and switching-off actions, the switching-on and switching-off synchronism is high, and the rapid grounding protection of the gas-insulated fully-closed combined electrical apparatus is facilitated.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic perspective view of a fast grounding switch according to an embodiment of the present utility model;

FIG. 2 is a perspective view of the embodiment of FIG. 1 with the housing removed;

FIG. 3 is a cross-sectional view of a fast grounding switch according to an embodiment of the present utility model in a closed state;

FIG. 4 is a cross-sectional view of a quick ground switch according to an embodiment of the present utility model in a tripped state;

FIG. 5 is a cross-sectional view of a quick ground switch in another orientation in accordance with one embodiment of the present utility model;

fig. 6 is a schematic perspective view of a housing of a fast grounding switch according to an embodiment of the present utility model;

FIG. 7 is an enlarged view of a portion of FIG. 2 at A;

fig. 8 is a partial enlarged view at B in fig. 3.

Reference numerals:

the device comprises a shell 100, a rotating shaft 110, an insulating seat 120, a mounting plane 121, a mounting seat 130, a grounding terminal seat 140 and a grounding terminal 141;

the movable contact assembly 200, the movable contact base 210, the plum blossom contact 220, the guide ring 230, the movable contact 240, the connecting base 250 and the strip-shaped hole 251;

crank arm 300, driver 310;

the transmission mechanism 400, the first connecting rod 410, the second connecting rod 420 and the third connecting rod 430.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The quick ground switch according to the first embodiment of the present utility model includes a housing 100, a moving contact assembly 200, a rotating shaft 110, and a crank arm 300.

Specifically, referring to fig. 1 and 2, the moving contact assemblies 200 are provided with three moving contact assemblies 200, the three moving contact assemblies 200 are arranged in the housing 100 side by side, the three moving contact assemblies 200 correspond to three-phase fixed contacts in the gas-insulated fully-closed combined electrical apparatus, the moving contact assemblies 200 comprise moving contact bases 210 and moving contacts 240, when the gas-insulated fully-closed combined electrical apparatus is grounded in a closing manner, the moving contacts 240 of the three moving contact assemblies 200 are connected with three fixed contacts corresponding to the gas-insulated fully-closed combined electrical apparatus, and when the gas-insulated fully-closed combined electrical apparatus is opened, the moving contacts 240 of the three moving contact assemblies 200 are disconnected with three fixed contacts corresponding to the gas-insulated fully-closed combined electrical apparatus.

The movable contact 210 is fixedly disposed on the housing 100 and is in insulating connection with the housing 100, so as to avoid the electrification phenomenon of the housing 100 when the quick grounding switch is grounded, and the movable contact 240 is disposed through the movable contact 210 and can move along the axial direction of the movable contact 210, so that the movable contact 240 is located at the closing position or the opening position. Referring to fig. 3, when the moving contact 240 moves to a closing position along the moving contact base 210, the moving contact 240 extends out of the moving contact base 210 by a certain length, and the moving contact 240 extending out of the moving contact base 210 can be connected with a fixed contact corresponding to electrical equipment to realize closing grounding; referring to fig. 4, when the moving contact 240 moves to the opening position along the moving contact base 210, the portion of the moving contact 240 extending from the moving contact base 210 is retracted into the moving contact base 210, and the moving contact 240 is disconnected from the fixed contact corresponding to the electrical equipment, so as to implement opening.

Referring to fig. 2 and 5, in order to implement the opening and closing operation of the moving contact 240 and the fixed contact corresponding to the electrical equipment, a rotating shaft 110 is provided in the housing 100, the rotating shaft 110 can rotate in the housing 100, three crank arms 300 are mounted on the rotating shaft 110, the three crank arms 300 are arranged in one-to-one correspondence with the three moving contact assemblies 200, one ends of the crank arms 300 are fixedly connected with the rotating shaft 110, and when the rotating shaft 110 rotates, the corresponding moving contact 240 can be driven to move along the axial direction of the moving contact seat 210 through the crank arms 300. The quick grounding switch of the utility model has the advantages that three moving contact assemblies 200 are arranged in the shell 100 to form a common box type structure, so that the requirements of small interval width and phase spacing are met; and, three crank arms 300 are installed at the rotating shaft 110, and when the rotating shaft 110 rotates, the three crank arms 300 simultaneously rotate to directly drive the moving contact 240 to perform opening and closing movements, so that the quick grounding switch has the characteristics of miniaturization, simple structure, convenient assembly, small transmission action and the like, and can ensure that three phases simultaneously perform opening and closing movements, and the opening and closing synchronization is high.

Referring to fig. 2, in some embodiments, the cross-sectional shape of the rotating shaft 110 is polygonal, the crank arm 300 is provided with a polygonal hole, the polygonal hole corresponds to the cross-sectional shape of the rotating shaft 110, the rotating shaft 110 passes through the polygonal hole of the crank arm 300, and the crank arm 300 cannot be actuated relative to the rotating shaft 110, so that the fixed connection of the crank arm 300 and the rotating shaft 110 is realized through the polygonal hole. It should be appreciated that the fixed connection between the lever 300 and the rotating shaft 110 may be implemented in various manners, for example, the lever 300 may be fixedly connected to the rotating shaft 110 by a fixing member, etc., which is not limited herein.

It can be understood that, in order to implement the switching-on and switching-off actions of the fast grounding switch, the rotation angle of the crank arm 300 may be set to 60 °, so that the moving contact 240 may be ensured to have a predetermined stroke, so as to effectively complete the switching-off and switching-on actions.

It should be understood that the crank arm 300 may be set to other rotation angles, without limitation, under the premise of ensuring that the opening and closing actions are effectively completed.

Referring to fig. 1 and 2, in order to facilitate assembly of three moving contact assemblies 200, in some embodiments, a housing 100 is provided with an insulating base 120, in this embodiment, the insulating base 120 is provided with a plate-shaped structure, the insulating base 120 has a mounting plane 121, three moving contact bases 210 are mounted on the mounting plane 121 side by side, the insulating base 120 not only plays a role of fixing the moving contact bases 210, but also plays a role of insulating the housing 100 and the moving contact 240, and the structure is simple, and meanwhile, the moving contact bases 210 of the three moving contact assemblies 200 are arranged on one mounting plane 121, so that the quick grounding switch can ensure three-phase simultaneous switching-on and switching-off in the working process.

Referring to fig. 2 and 3, in some embodiments, a connecting seat 250 is disposed at an end of the moving contact 240 near the crank arm 300, the connecting seat 250 is fixedly connected with the moving contact 240, the crank arm 300 is in transmission connection with the connecting seat 250, and when the crank arm 300 rotates, the moving contact 240 can be driven to move along the axial direction of the moving contact seat 210 through the connecting seat 250.

It can be appreciated that, in order to prevent the current from being conducted to the housing 100 along the connecting seat 250, the crank arm 300 and the rotating shaft 110 during the closing of the moving contact 240, one or all of the connecting seat 250, the crank arm 300 and the rotating shaft 110 is made of an insulating material, so as to prevent the conduction of the current and prevent the housing 100 from being electrified.

In order to realize the transmission connection between the crank arm 300 and the connecting seat 250, referring to fig. 2, 3 and 7, in some embodiments, the connecting seat 250 is provided with a bar-shaped hole 251, one end of the crank arm 300 away from the rotating shaft 110 is provided with a driving member 310, and the driving member 310 is disposed through the bar-shaped hole 251 and can move along the length direction of the bar-shaped hole 251.

Specifically, when the electrical equipment needs to be grounded in a closing manner, the rotating shaft 110 is rotated, the rotating shaft 110 drives the three crank arms 300 to synchronously rotate, and when the crank arms 300 rotate, the driving piece 310 moves along the length direction of the strip-shaped hole 251, meanwhile, the driving piece 310 is abutted to the upper side wall of the strip-shaped hole 251 to drive the connecting seat 250 to move, and then the moving contact 240 is driven to move along the axial direction of the moving contact seat 210, so that the moving contact 240 extends out of the moving contact seat 210 for a certain length, and the moving contact 240 extending out of the moving contact seat 210 can be connected with a fixed contact corresponding to the electrical equipment to realize the grounding in a closing manner; when the brake is opened, the rotating shaft 110 is reversely rotated, the rotating shaft 110 drives the three crank arms 300 to synchronously rotate, when the crank arms 300 rotate, the driving piece 310 reversely moves during closing, meanwhile, the driving piece 310 is abutted to the lower side wall of the strip-shaped hole 251 to drive the connecting seat 250 to move, the part of the movable contact 240 extending out of the movable contact seat 210 is retracted into the movable contact seat 210, and the movable contact 240 is disconnected with a fixed contact corresponding to electrical equipment to realize brake opening.

It is understood that the driving member 310 may be a pin, a bolt type needle bearing, or the like, which is not limited herein.

It should be noted that the driving connection between the lever 300 and the connecting base 250 may be achieved by other structures, which will not be described in detail herein.

Referring to fig. 1 and 2, the housing 100 is provided with a plurality of ground terminals 141, and the ground terminals 141 are electrically connected to the corresponding movable contacts 240, respectively, and when the quick ground switch is in the closing position, the ground is realized by the ground terminals 141.

Referring to fig. 3 and 8, in some embodiments, a tulip contact 220 is installed in a movable contact base 210, the tulip contact 220 is electrically connected with a movable contact 240 and a corresponding ground terminal 141, and effective electrical connection between the movable contact 240 and the ground terminal 141 can be achieved through the tulip contact 220, and a better centering effect of the movable contact 240 is ensured; the guide ring 230 is arranged in the movable contact base 210, the plum blossom contact 220 is arranged at one end of the guide ring 230, the movable contact 240 penetrates through the guide ring 230 and the plum blossom contact 220, the guide ring 230 plays a guide role on the movable contact 240, and the guide ring 230 can also play a role in enabling the movable contact 240 to have a good centering effect so as to avoid the deviation phenomenon of the movable contact 240 in the opening and closing actions and ensure the opening and closing accuracy; moreover, the plum blossom contact 220, the guide ring 230 and the moving contact 240 are matched, so that the moving contact assembly 200 is convenient to assemble.

Referring to fig. 1, 3 and 6, the housing 100 is provided with a mounting base 130, a ground terminal base 140 is mounted on the mounting base 130, a ground terminal 141 is mounted on the ground terminal base 140, and the tulip contact 220 and the ground terminal 141 are connected by a conductive sheet, so that the movable contact 240 and the ground terminal 141 are electrically connected.

It is understood that other connection structures between the movable contact 240 and the ground terminal 141 may be used, and will not be described in detail herein.

Referring to fig. 1 and 2, a transmission mechanism 400 is connected to one end of the rotating shaft 110, and the transmission mechanism 400 is used for being connected to a driving structure to rotate the rotating shaft 110. The drive structure may be a motor, a handle, etc., and is not limited herein.

Referring to fig. 1 and 2, in some embodiments, the transmission mechanism 400 includes a first link 410, a second link 420, and a third link 430, two ends of the second link 420 are respectively hinged to the first link 410 and the third link 430, the first link 410 is fixedly connected to the rotating shaft 110, and the third link 430 is used for connecting to a driving structure, and the transmission mechanism 400 has a simple structure and is convenient to assemble.

The gas-insulated fully-enclosed combined electrical apparatus according to the embodiment of the second aspect of the present utility model includes the fast grounding switch according to any one of the embodiments described above. The gas-insulated fully-closed combined electrical appliance provided by the utility model has the characteristics of miniaturization, simple structure, convenience in assembly, small transmission action and the like by adopting the rapid grounding switch, and can meet the requirements of small interval width and phase spacing; and the three phases can be ensured to simultaneously perform switching-on and switching-off actions, the switching-on and switching-off synchronism is high, and the rapid grounding protection of the gas-insulated fully-closed combined electrical apparatus is facilitated.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

Of course, the present utility model is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are included in the scope of the present utility model as defined in the claims.

Claims (10)

1. A quick ground switch, comprising:

a housing;

the movable contact assembly is provided with three movable contact assemblies, the three movable contact assemblies are arranged in the shell side by side, the movable contact assembly comprises a movable contact seat and a movable contact, the movable contact seat is fixedly arranged in the shell, and the movable contact penetrates through the movable contact seat and can move along the axial direction of the movable contact seat so that the movable contact is positioned at a closing position or a separating position;

the rotating shaft is rotatably arranged on the shell;

the crank arms are arranged in a one-to-one correspondence mode, the three crank arms are arranged with the three moving contact assemblies, one ends of the crank arms are fixedly connected with the rotating shaft, and when the rotating shaft rotates, the corresponding moving contacts can be driven by the crank arms to move along the axial direction of the moving contact seat.

2. The quick ground switch of claim 1, wherein the housing is provided with an insulating mount having a mounting plane, and wherein three of the movable contact mounts are mounted side-by-side to the mounting plane.

3. The quick grounding switch according to claim 1, wherein one end of the movable contact, which is close to the crank arm, is connected with a connecting seat, the crank arm is in transmission connection with the connecting seat, and the crank arm can drive the movable contact to move along the axial direction of the movable contact seat through the connecting seat.

4. The quick ground switch according to claim 3, wherein the connecting seat is provided with a bar-shaped hole, a driving member is arranged at one end of the crank arm far away from the rotating shaft, and the driving member penetrates through the bar-shaped hole and can move along the length direction of the bar-shaped hole.

5. The quick ground switch of claim 1, wherein a plurality of ground terminals are provided on the housing, the ground terminals being electrically connected to the corresponding movable contacts, respectively.

6. The quick ground switch of claim 5, wherein a tulip contact is mounted in the movable contact base, and the tulip contact is electrically connected to the movable contact and the corresponding ground terminal, respectively.

7. The quick ground switch of claim 6, wherein a guide ring is disposed in the movable contact base, the tulip contact is disposed at one end of the guide ring, and the movable contact is disposed through the guide ring and the tulip contact.

8. The quick ground switch of claim 1, wherein one end of the shaft is connected to a transmission mechanism for connecting to a drive structure to rotate the shaft.

9. The quick ground switch of claim 8, wherein the transmission mechanism comprises a first link, a second link, and a third link, two ends of the second link are respectively hinged to the first link and the third link, the first link is fixedly connected to the rotating shaft, and the third link is used for being connected to the driving structure.

10. A gas-insulated fully enclosed electrical combiner comprising a fast grounding switch as claimed in any one of claims 1 to 9.