CN209748043U - rotary propelling type gas tank of gas insulated metal-enclosed switchgear and three-station isolating switch - Google Patents
rotary propelling type gas tank of gas insulated metal-enclosed switchgear and three-station isolating switch Download PDFInfo
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- CN209748043U CN209748043U CN201920575917.2U CN201920575917U CN209748043U CN 209748043 U CN209748043 U CN 209748043U CN 201920575917 U CN201920575917 U CN 201920575917U CN 209748043 U CN209748043 U CN 209748043U
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Abstract
The utility model discloses a rotary propelling type gas-insulated metal-enclosed switchgear gas tank and a three-station isolating switch, wherein the gas tank body is internally provided with the three-station isolating switch and a breaker component; the three-station isolating switch comprises an isolating grounding part, an isolating static knife, an isolating movable knife sleeve, a rotating push rod and a conductive copper part; the isolation moving knife sleeve is arranged between the isolation grounding part and the isolation static knife and the isolation grounding part, and the isolation moving knife sleeve, the isolation static knife and the isolation static knife are positioned on the same straight line; one end of the rotary push rod is connected with the rotary push type isolation mechanism, and the other end of the rotary push rod is provided with a conductive copper piece along the length direction of the rotary push rod; the rotary push rod is movably arranged in the isolation grounding part and the isolation movable knife sleeve in a penetrating mode and can move back and forth under the driving of the rotary push type isolation mechanism to drive the conductive copper part to move so as to achieve rotary type brake opening, brake closing or grounding. The isolating moving cutter sleeve is connected and fixed on the circuit breaker assembly; the transmission portion of the circuit breaker assembly is connected to the circuit breaker operating mechanism.
Description
Technical Field
the utility model belongs to the technical field of power system power transmission and distribution equipment makes, concretely relates to rotatory impulse type gas insulated metal enclosed switchgear gas tank and three-station isolator.
Background
In the existing power supply network system in China, in order to improve the power supply reliability, along with the rapid development of modern social economy and modern industrial technology, the power demand is continuously increased in various industries, particularly a medium-voltage power distribution system plays a role of 'starting and stopping' in the whole power distribution system and occupies a very important position, so that the performance of medium-voltage power distribution equipment is of great importance for the safe and continuous operation of the whole power grid. The rotary propelling gas-insulated metal-enclosed switchgear gas tank and the three-station isolating switch, referred to as C-GIS for short, are power distribution equipment developed at the end of the last century and specially applied to medium-voltage systems, and the outstanding safety and reliability enable the equipment to be rapidly developed at the beginning of the century, so that the C-GIS manufacturing industry is rapidly developed, and the manufacturing technology is rapidly advanced.
Before and after 2000 years, medium-voltage C-GIS equipment has been developed in a leap-type manner, and new technologies, structures, processes, equipment and the like enter the popularization and use stage. The technical parameters and reliability of the product are further improved, and the size is further reduced.
SUMMERY OF THE UTILITY MODEL
the purpose is as follows: in order to overcome the deficiencies in the prior art, the utility model provides a rotatory impulse type gas insulated metal enclosed switchgear gas tank and three-station isolator.
the technical scheme is as follows: in order to solve the technical problem, the utility model discloses a technical scheme does:
in one aspect, a three-position isolator switch comprises: the isolation grounding part is electrically connected with the grounding loop, the isolation static knife is electrically connected with the bus, the isolation movable knife sleeve, the rotary push rod and the conductive copper piece;
The isolation moving knife sleeve is a conductive piece, is arranged between the isolation grounding part and the isolation static knife and is positioned on the same straight line;
one end of the rotary push rod is connected with the rotary push type isolating mechanism and is driven by the rotary push type isolating mechanism to rotate and move back and forth, and the other end of the rotary push rod is provided with a conductive copper piece along the length direction of the rotary push rod;
the isolation grounding part and the isolation movable knife sleeve are horizontally provided with through holes matched with the rotary push rod, the rotary push rod is movably arranged in the isolation grounding part and the isolation movable knife sleeve in a penetrating mode and can move back and forth under the driving of the rotary push type isolation mechanism to drive the conductive copper piece to be in a position enabling the isolation movable knife sleeve to be in conductive electric connection with the isolation grounding part and enabling the isolation movable knife sleeve to be in conductive electric connection with the isolation static knife or enabling the isolation movable knife sleeve to be in non-conductive electric connection with the isolation grounding part and the isolation static knife.
furthermore, the conductive copper piece is sleeved and fixed at the end part of the rotary push rod, and the outer diameter of the conductive copper piece is matched with the inner diameter of the through hole in the isolation grounding part and the isolation movable cutter sleeve.
Furthermore, the length of the conductive copper piece is not less than the distance between the isolation movable knife sleeve and the isolation grounding part and the distance between the isolation movable knife sleeve and the isolation static knife, and is less than the distance between the isolation grounding part and the isolation static knife.
on the other hand, the utility model also provides a rotary propelling type gas insulated metal enclosed switchgear gas tank, which comprises a gas tank body, wherein the three-station isolating switch and the breaker component are arranged in the gas tank body;
the front part of the gas box body is provided with a rotary push type isolation mechanism and a circuit breaker operating mechanism; the rotary push type isolating mechanism and the circuit breaker operating mechanism are arranged up and down;
The isolating movable cutter sleeve of the three-station isolating switch is connected and fixed on the circuit breaker assembly;
the rotary push rod of the three-station isolating switch is connected with the rotary push type isolating mechanism, and rotary switching-off, switching-on or grounding is realized by operating the rotary push type isolating mechanism;
the transmission part of the circuit breaker assembly is connected with the circuit breaker operating mechanism, and the vacuum bubbles in the circuit breaker assembly are switched on and off by operating the circuit breaker operating mechanism.
Preferably, the circuit breaker assembly comprises a vacuum bulb, a vacuum bulb static end copper part, a vacuum bulb moving end copper part, a double-end screw, an insulating pull rod, an aluminum clamping part and an insulating rod;
the outer end of the vacuum bubble static conductive rod is fixedly connected with a vacuum bubble static end copper part, and the outer end of the vacuum bubble movable conductive rod is connected with a vacuum bubble movable end copper part in a sliding manner;
The outer end of the vacuum bubble moving conducting rod is connected with one end of an insulating pull rod through a double-end screw, and the other end of the insulating pull rod is connected with a circuit breaker operating mechanism;
The vacuum bubble static end copper piece and the vacuum bubble movable end copper piece are respectively clamped through an aluminum clamping piece;
the aluminum clamping pieces are arranged in a bilateral symmetry mode, and the upper end and the lower end of each aluminum clamping piece are respectively provided with a bolt hole used for being connected with the insulating rod;
The insulating rods are respectively arranged in parallel along the length direction of the vacuum bubbles; the insulating rod is provided with bolt holes at the corresponding positions of the bolt holes on the aluminum clamping piece; the rear end of the insulating rod is fixedly connected with the aluminum clamping piece and the vacuum bubble static end copper piece through bolts and nuts, and the middle part of the insulating rod is fixedly connected with the aluminum clamping piece and the vacuum bubble movable end copper piece through bolts and nuts.
furthermore, a pressure equalizing piece is arranged at the joint of the insulating rod and the aluminum clamping piece;
The pressure equalizing piece is provided with a hole for a bolt to pass through and a groove for accommodating the bolt and the nut; the bolt is arranged in the equalizing piece in a penetrating mode;
the pressure equalizing piece is of a circular structure, and the upper surface of the pressure equalizing piece is of a hemispherical structure.
the outer end of the vacuum bubble movable conducting rod adopts a conical inclined surface structure, and the vacuum bubble movable end copper piece is provided with a watchband contact finger groove which is used for realizing the matching connection of an inclined surface and a watchband contact finger with the outer end of the vacuum bubble movable conducting rod;
The insulating rod is made of epoxy resin; the insulating rod is of a square strip-shaped structure; the insulating rod is provided with an insulating rod skirt edge for increasing creepage distance;
the aluminum material clamping piece is of a hoop structure which is bilaterally symmetrical.
Furthermore, the gas tank of the rotary propelling type gas-insulated metal-enclosed switchgear further comprises a corrugated pipe and a circuit breaker transmission assembly, the insulating pull rod is connected with the circuit breaker operating mechanism through the circuit breaker transmission assembly, and the circuit breaker assembly is connected with the circuit breaker operating mechanism in a sealing mode through the corrugated pipe.
Furthermore, the rotary propelling type gas insulated metal enclosed switchgear gas tank is characterized in that the isolation grounding part is fixed on the inner wall in front of the gas tank body, and the isolation static knife is connected and fixed on the bus copper bar;
the isolation moving cutter sleeve is fixedly connected to the vacuum bubble moving end copper part, and is used as a conductive piece to be electrically connected with the vacuum bubble moving end copper part; the vacuum bubble static end copper piece is connected with the outlet copper bar.
furthermore, the gas-insulated metal-enclosed switchgear gas tank also comprises a wire outlet sleeve, wherein the wire outlet sleeve is positioned at the front lower part of the gas tank body and is arranged at the left, middle and right parts; the outgoing copper bar is supported and fixed through an outgoing copper bar supporting seat; the breaker component is connected with the outgoing copper bar and then penetrates out of the gas tank body through the outgoing sleeve;
the gas box body is also provided with a bus extension sleeve; the bus extension sleeve comprises an A-phase bus extension sleeve, a B-phase bus extension sleeve and a C-phase bus extension sleeve; the bus expansion sleeve is arranged at the top of the gas tank body and is respectively fixed with a three-phase bus copper bar;
the bus copper bar is supported by the bus copper bar supporting seat, one end of the bus copper bar supporting seat is connected with the bus copper bar, and the other end of the bus copper bar supporting seat is connected and fixed on the inner wall of the gas tank body.
further, an air box pressure relief flange is arranged at the bottom of the air box body.
Has the advantages that: the utility model provides a rotatory impulse type gas insulated metal enclosed switchgear gas tank and three station isolator have following advantage:
1. the three-station isolating switch adopts a rotary direct-push mode driving mode, the contact of the moving contact and the static contact adopts the mutual matching of a screw rod and a conductive copper piece, the screw rod drives the conductive copper piece to move forward or backward for switching on and off, and the switching on and off can be effectively carried out due to the adoption of slow switching-on and switching-off.
2. the vacuum bulb of the circuit breaker assembly is installed in the later period, the assembly is simple and convenient, the vacuum bulb is selected flexibly, and the requirements of different users are met.
3. the aluminum bar for fixing the vacuum bubble is made of epoxy resin materials, and the skirt edge of the insulating bar is designed to increase the creepage distance;
4. and the miniaturization can be realized by adopting various voltage-sharing and insulating means.
5. The movable end of the vacuum bulb and the movable end copper piece adopt a matching mode of an inclined plane and a watchband contact finger, and the vacuum bulb can adapt to occasions with large current.
5. The air box is provided with multiple safety measures for protecting operators, such as a three-station isolation position observation window, a pressure relief flange and the like.
Drawings
fig. 1 is a front view of a gas cabinet of a rotary push type gas insulated metal enclosed switchgear of an embodiment;
figure 2 is a front view of the circuit breaker assembly of the embodiment;
fig. 3 is a left side view of the circuit breaker assembly of the embodiment;
FIG. 4 is a schematic structural view of a equalizer in an embodiment;
FIG. 5 is a schematic structural view of an insulating rod in the example;
Fig. 6 is a schematic closing diagram of the three-position disconnecting switch according to the embodiment;
FIG. 7 is a schematic grounding diagram of a three-position disconnecting switch according to an embodiment;
In the figure: the three-station isolating switch comprises a three-station isolating switch 1, a circuit breaker assembly 2, an air box body 3, a rotary push type isolating mechanism 4, a circuit breaker operating mechanism 5, an outlet copper bar 6 and a bus copper bar 7;
An isolation grounding part 101, an isolation static knife 102, an isolation movable knife sleeve 103, a rotary push rod 104 and a conductive copper piece 105;
the device comprises a vacuum bubble 201, a vacuum bubble static end copper part 202, a vacuum bubble movable conducting rod outer end 203, a vacuum bubble movable end copper part 204, a double-headed screw 205, an insulating pull rod 206, a corrugated pipe 207, a rim rod 208, a rear end aluminum part 209, a front end aluminum part 210, a pressure equalizing part 211, a fastening bolt 212, a watchband contact finger groove 213, a breaker transmission assembly 214 and an insulating rod skirt 215;
The bus expansion bushing comprises a wire outlet bushing 301, a bus expansion bushing 302 and an air box pressure relief flange 303; an outgoing line copper bar supporting seat 601 and a bus copper bar supporting seat 701.
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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
example 1
As shown in fig. 1, 6 and 7, a three-position disconnecting switch 1 includes: an isolation grounding part 101 electrically connected with a grounding loop, an isolation static knife 102 electrically connected with a bus, an isolation movable knife sleeve 103, a rotary push rod 104 and a conductive copper piece 105;
The isolation movable knife sleeve 103 is arranged between the isolation grounding part 101 and the isolation static knife 102, and the isolation movable knife sleeve, the isolation static knife and the isolation static knife are positioned on the same straight line;
one end of the rotating push rod 104 is connected with the rotating push type isolating mechanism 4 and is driven by the rotating push type isolating mechanism 4 to rotate and move back and forth, and the other end of the rotating push rod 104 is provided with a conductive copper part 105 along the length direction of the rotating push rod 104;
the isolation grounding part 101 and the isolation movable knife sleeve 103 are horizontally provided with through holes matched with the rotary push rod 104, the rotary push rod 104 is movably arranged in the isolation grounding part 101 and the isolation movable knife sleeve 103 in a penetrating manner and can move back and forth under the driving of the rotary push type isolation mechanism 4 to drive the conductive copper piece 105 to be in a state that the isolation movable knife sleeve is electrically connected with the isolation grounding part in a conducting manner, and the isolation movable knife sleeve is electrically connected with the isolation static knife or the isolation movable knife sleeve is electrically connected with the isolation grounding part and the isolation static knife in a non-conducting manner.
in some embodiments, as shown in fig. 1, the rotating push rod 104 is an external thread structure, the diameter of the through holes in the isolating and grounding portion 101 and the isolating movable knife pouch 103 is larger than the maximum diameter of the rotating push rod 104, and the rotating push rod 104 is movably disposed through the through holes in the isolating and grounding portion 101 and the isolating movable knife pouch 103.
Further, in some embodiments, as shown in fig. 1, the conductive copper part 105 of the busbar copper bar supporting seat 701 is sleeved and fixed at the end of the rotating push rod 104, and the outer diameter of the conductive copper part 105 is matched with the inner diameter of the through hole in the isolation grounding part 101 and the isolation moving knife sleeve 103.
Further, in some embodiments, as shown in fig. 1, 6 and 7, the length of the conductive copper part of the busbar copper bar supporting seat 701 is not less than the distance between the isolation movable knife rest 103 and the isolation grounding portion 101 and the isolation movable knife rest 103 and the isolation stationary knife 102, and is less than the distance between the isolation grounding portion 101 and the isolation stationary knife 102.
further, in some embodiments, the isolating movable knife sleeve 103 is a conductive member and is also a fixing member of the rotating push rod, and it is necessary to ensure the concentricity of the rotating push rod and the isolating stationary knife; the rotary push type isolation mechanism 4 acts on the rotary push rod to enable the rotary push rod to move back and forth, and isolation switching-off, switching-on and grounding are achieved. As shown in fig. 1, the three-position isolating switch is opened.
As shown in fig. 6, the electric copper part 105 makes the isolation moving knife sleeve 103 and the isolation stationary knife 102 electrically connected, and the three-position isolation switch is closed.
As shown in fig. 7, the electric copper piece 105 is in a state of making the isolation movable knife sleeve 103 and the isolation grounding part 101 electrically connected in a conducting way, and the three-position isolation switch is grounded.
Example 2
As shown in fig. 1, 2, 3 and 4, the gas box of the rotary propelling type gas insulated metal enclosed switchgear comprises a gas box body 3, wherein a three-position disconnecting switch 1 and a breaker assembly 2 in the embodiment are arranged in the gas box body 3;
A rotary push type isolation mechanism 4 and a circuit breaker operating mechanism 5 are arranged at the front part of the gas box body 3; the rotary push type isolation mechanism 4 and the circuit breaker operating mechanism 5 are arranged up and down; the structure of the upper isolation lower circuit breaker assembly is formed;
the isolation moving knife sleeve 103 of the three-station isolating switch is fixedly connected to the circuit breaker assembly 2; the rotary push rod 104 of the three-station isolating switch is connected with the rotary push type isolating mechanism 4, and rotary opening and closing or grounding is realized by operating the rotary push type isolating mechanism 4;
The transmission part of the circuit breaker assembly 2 is connected with the circuit breaker operating mechanism 5, and the circuit breaker operating mechanism 5 is operated to realize the on-off of the vacuum bubbles in the circuit breaker assembly 2.
In some embodiments, as shown in fig. 2 and 3, the circuit breaker assembly 2 includes a vacuum bulb 201, a vacuum bulb static end copper member 202, a vacuum bulb moving end copper member 204, a double-headed screw 205, an insulating pull rod 206, a bellows 207, an aluminum clamping member, an insulating rod 208;
In this embodiment, as shown in fig. 2 and 3, the aluminum clamping piece has a bilaterally symmetrical hoop structure. The aluminum clamping piece comprises a rear end aluminum piece 209 and a front end aluminum piece 210;
The outer end of the vacuum bubble static conductive rod is fixedly connected with a vacuum bubble static end copper part 202;
the outer end 203 of the vacuum bubble movable conducting rod is connected with a vacuum bubble movable end copper piece 204 in a sliding manner;
the outer end 203 of the vacuum bubble moving conducting rod is connected with one end of an insulating pull rod 206 through a double-head screw 205, and the other end of the insulating pull rod 206 is fixedly connected with a corrugated pipe 207 and is used for being connected with a circuit breaker operating mechanism through the corrugated pipe 207;
the vacuum bubble static end copper part 202 is clamped through a rear end aluminum part 209, and the vacuum bubble moving end copper part 204 is clamped through a front end aluminum part 210;
The rear-end aluminum piece 209 and the front-end aluminum piece 210 are arranged in a left-right symmetry manner, and bolt holes for connecting with the insulating rod 208 are respectively arranged at the upper end and the lower end of the rear-end aluminum piece 209 and the front-end aluminum piece 210;
The four insulating rods 208 are respectively arranged in parallel along the length direction of the vacuum bulb 201; the corresponding positions of the bolt holes on the rear-end aluminum piece 209 and the front-end aluminum piece 210 of the insulating rod 208 are provided with bolt holes, the rear end of the insulating rod 208 is fixedly connected with the rear-end aluminum piece 209 and the vacuum bubble static end copper piece 202 through bolts and nuts, and the middle part of the insulating rod 208 is fixedly connected with the front-end aluminum piece 210 and the vacuum bubble dynamic end copper piece 204 through bolts and nuts.
Further, in some embodiments, as shown in fig. 2, a voltage equalizer 211 is disposed at the connection of the insulating rod 208 and the aluminum clamp. As shown in fig. 3 and 4, a hole for a bolt to pass through and a groove for accommodating the bolt and the nut are formed on the pressure equalizing member 211; the bolt is inserted into the equalizer 211. The voltage equalizing piece 211 is of a circular structure, and the upper surface of the voltage equalizing piece 211 is of a hemispherical structure and used for improving electric field distribution.
Further, as shown in fig. 2, the outer end 203 of the vacuum bubble moving conductive rod adopts a conical inclined surface structure, and is matched with the copper piece 204 at the moving end of the vacuum bubble to realize sliding connection. The vacuum bubble moving end copper piece 204 is provided with a watchband contact finger groove 213, and is used for realizing the matching connection of the inclined plane and the watchband contact finger with the outer end of the vacuum bubble moving conductive rod.
in some embodiments, as shown in fig. 2 and 5, the insulating rod 208 is made of epoxy resin. Further, the insulating rod 208 is a square strip-shaped structure; an insulating rod skirt 215 is arranged on the insulating rod 208 for increasing the creepage distance.
In this embodiment, as shown in fig. 3, the four insulating rods 208 are an upper left insulating rod, an upper right insulating rod, a lower left insulating rod, and a lower right insulating rod, respectively;
The front-end aluminum piece 210 and the rear-end aluminum piece 209 have the same structure and are of a bilaterally symmetrical hoop structure, the front end and the rear end of the vacuum bubble 201 are clamped and fixed through the front-end aluminum piece 210 and the rear-end aluminum piece 209 respectively and are fixed in an upper left insulating rod, an upper right insulating rod, a lower left insulating rod and a lower right insulating rod, and a fastening bolt 212 is sleeved in a pressure equalizing piece 211 and sequentially penetrates through a bolt hole in the insulating rod 208, a clamping piece and the vacuum bubble static-end copper piece 202 or the vacuum bubble movable-end copper piece 204 and is fastened through a nut;
the outer end 203 of the vacuum bubble movable conducting rod adopts the design of an inclined plane and is matched with the vacuum bubble movable end copper piece 204, so that the friction between the copper pieces is reduced, the contact area is increased, meanwhile, the vacuum bubble movable end copper piece 204 is provided with a watchband contact finger groove 213, and a watchband contact finger can be used in the occasion of using large current; the outer end 203 of the vacuum bubble movable conducting rod is connected with an insulating pull rod 206 through a double-head screw 205, the insulating pull rod 206 is tightly connected with a corrugated pipe 207, and the circuit breaker assembly 2 is hermetically connected with a circuit breaker operating mechanism through the corrugated pipe 207. The opening and closing acting force of the vacuum bubble 201 is pushed by the circuit breaker operating mechanism, and the corrugated pipe 207 has the additional functions of sealing and reducing the rebounding acting force of the operating mechanism, so that the damage to the vacuum bubble 201 is reduced.
further, in some embodiments, as shown in fig. 1, the isolating movable knife pouch 103 is fixedly connected to the vacuum bubble movable end copper component 204, and the isolating movable knife pouch 103 is used as a conductive component and electrically connected to the vacuum bubble movable end copper component 204; the vacuum bubble moving end copper part 204 is connected with the circuit breaker operating mechanism 5 through the circuit breaker transmission assembly 214, and the opening and closing of the circuit breaker assembly 2 are realized through the action of the circuit breaker operating mechanism 5;
The vacuum bubble static end copper piece 202 is connected with the outgoing line copper bar 6. The outlet copper bar 6 is supported and fixed by the outlet copper bar supporting seat 601.
in some embodiments, as shown in fig. 1, the gas box of the rotary-propelling gas-insulated metal-enclosed switchgear further includes a wire outlet sleeve 301, where the wire outlet sleeve 301 is located at the front of the gas box body 3 and arranged in the left-middle-right direction; the circuit breaker assembly is connected with the outgoing line copper bar 6 and then penetrates out of the air box body 3 through the outgoing line sleeve 301.
in some embodiments, as shown in fig. 1, the isolating static blade 102 is connected and fixed on the busbar 7. The bus copper bar 7 passes through bus copper bar supporting seat 701 supports, bus copper bar supporting seat 701 one end is connected with bus copper bar 7, and the other end is connected to be fixed on the gas tank box inner wall.
in some embodiments, as shown in fig. 1, a bus bar extension sleeve 302 is further mounted on the gas box body 3; the bus expansion sleeve 302 comprises an A-phase bus expansion sleeve, a B-phase bus expansion sleeve and a C-phase bus expansion sleeve. The A-phase bus expansion sleeve, the B-phase bus expansion sleeve and the C-phase bus expansion sleeve are arranged at the top of the gas box body 3.
In some embodiments, as shown in fig. 1, the bottom of the air box body 3 is provided with an air box pressure relief flange 303.
preferably, the air box body 3 is made of metal.
The utility model provides a rotatory impulse type gas insulated metal enclosed switchgear gas tank, wherein three station isolator 1 adopts rotatory impulse type transmission, circuit breaker subassembly 2 adopts the assembled, the vacuum bubble moves quiet end and connects with the copper spare, the front and back end copper spare is fixed with aluminium spare clamping piece, it is fixed with each two piece insulating rod 208 from top to bottom after, thus, vacuum bubble and all electrically conductive, the contact surface all exposes, the purpose is just for better heat dissipation, the exposed electrified part adopts the circular shape voltage-sharing piece, modes such as oblate feeder, improve electrified partial electric field, even also can reach corresponding insulation level under normal atmospheric pressure.
2. Because the vacuum bubble is exposed, no bubble exists like a solid-sealed circuit breaker, the influence of partial discharge is solved, and the potential safety hazard of discharge breakdown of the outer surface of the vacuum bubble is eliminated.
3. the insulating rod 208 for fixing the vacuum bubbles is made of epoxy resin materials, and an insulating rod skirt 215 is connected and arranged on the insulating rod 208, so that the creepage distance is increased;
4. the circuit breaker assembly of the present application can be installed in switchgear of various insulating gases, such as dryable air, high purity nitrogen, or SF 6.
5. the exposed live part and the fastener adopt the modes of a circular pressure equalizing piece, an oblate feeder line and the like, the electric field of the live part is improved, and the corresponding insulation level can be achieved even under normal atmospheric pressure.
6. The outer end 203 of the vacuum bubble movable conducting rod and the vacuum bubble movable end copper piece 204 adopt a matching mode of an inclined plane and a watchband contact finger, and the vacuum bubble movable conducting rod can adapt to the occasions of large current.
7. the circuit breaker assembly 2 and the circuit breaker operating mechanism are sealed by a corrugated pipe 207, and an insulating pull rod 206 is matched and connected with a double-head screw 205, so that a sufficient electrical distance is ensured.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting with respect to the scope of the present invention.
the above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (10)
1. a three-position isolating switch is characterized by comprising: the isolation grounding part is electrically connected with the grounding loop, the isolation static knife is electrically connected with the bus, the isolation movable knife sleeve, the rotary push rod and the conductive copper piece;
The isolation moving knife sleeve is a conductive piece, is arranged between the isolation grounding part and the isolation static knife and is positioned on the same straight line;
One end of the rotary push rod is connected with the rotary push type isolating mechanism and is driven by the rotary push type isolating mechanism to rotate and move back and forth, and the other end of the rotary push rod is provided with a conductive copper piece along the length direction of the rotary push rod;
The isolation grounding part and the isolation movable knife sleeve are horizontally provided with through holes matched with the rotary push rod, the rotary push rod is movably arranged in the isolation grounding part and the isolation movable knife sleeve in a penetrating mode and can move back and forth under the driving of the rotary push type isolation mechanism to drive the conductive copper piece to be in a position enabling the isolation movable knife sleeve to be in conductive electric connection with the isolation grounding part and enabling the isolation movable knife sleeve to be in conductive electric connection with the isolation static knife or enabling the isolation movable knife sleeve to be in non-conductive electric connection with the isolation grounding part and the isolation static knife.
2. The three-position isolating switch according to claim 1, wherein the conductive copper member is sleeved and fixed at the end of the rotating push rod, and the outer diameter of the conductive copper member is matched with the inner diameter of the through hole in the isolating grounding part and the isolating movable knife sleeve.
3. the three-position isolating switch according to claim 1, wherein the length of the conductive copper part is not less than the distance between the isolating movable knife sleeve and the isolating grounding part and the isolating movable knife sleeve and the isolating static knife, and is less than the distance between the isolating grounding part and the isolating static knife.
4. a rotary-propelling gas-insulated metal-enclosed switchgear gas tank comprising a gas tank body, characterized in that a three-position disconnector and circuit breaker assembly according to any one of claims 1 to 3 is mounted in the gas tank body;
the front part of the gas box body is provided with a rotary push type isolation mechanism and a circuit breaker operating mechanism; the rotary push type isolating mechanism and the circuit breaker operating mechanism are arranged up and down;
The isolating movable cutter sleeve of the three-station isolating switch is connected and fixed on the circuit breaker assembly;
The rotary push rod of the three-station isolating switch is connected with the rotary push type isolating mechanism, and rotary switching-off, switching-on or grounding is realized by operating the rotary push type isolating mechanism;
The transmission part of the circuit breaker assembly is connected with the circuit breaker operating mechanism, and the vacuum bubbles in the circuit breaker assembly are switched on and off by operating the circuit breaker operating mechanism.
5. the gas box of claim 4, wherein the breaker assembly comprises vacuum bubbles, vacuum bubble static end copper pieces, vacuum bubble moving end copper pieces, double-headed screws, insulated pull rods, aluminum clamping pieces, insulated bars;
The outer end of the vacuum bubble static conductive rod is fixedly connected with a vacuum bubble static end copper part, and the outer end of the vacuum bubble movable conductive rod is connected with a vacuum bubble movable end copper part in a sliding manner;
the outer end of the vacuum bubble moving conducting rod is connected with one end of an insulating pull rod through a double-end screw, and the other end of the insulating pull rod is connected with a circuit breaker operating mechanism;
The vacuum bubble static end copper piece and the vacuum bubble movable end copper piece are respectively clamped through an aluminum clamping piece;
The aluminum clamping pieces are arranged in a bilateral symmetry mode, and the upper end and the lower end of each aluminum clamping piece are respectively provided with a bolt hole used for being connected with the insulating rod;
the insulating rods are respectively arranged in parallel along the length direction of the vacuum bubbles; the insulating rod is provided with bolt holes at the corresponding positions of the bolt holes on the aluminum clamping piece; the rear end of the insulating rod is fixedly connected with the aluminum clamping piece and the vacuum bubble static end copper piece through bolts and nuts, and the middle part of the insulating rod is fixedly connected with the aluminum clamping piece and the vacuum bubble movable end copper piece through bolts and nuts.
6. The gas box of the rotary propelling gas-insulated metal-enclosed switchgear as claimed in claim 5, wherein a pressure equalizing member is further provided at the junction of the insulating rod and the aluminum clamping member;
the pressure equalizing piece is provided with a hole for a bolt to pass through and a groove for accommodating the bolt and the nut; the bolt is arranged in the equalizing piece in a penetrating mode;
the pressure equalizing piece is of a circular structure, and the upper surface of the pressure equalizing piece is of a hemispherical structure.
7. The gas tank of the rotary propelling gas-insulated metal-enclosed switchgear as claimed in claim 5, wherein the outer end of the vacuum bubble movable conducting rod adopts a conical bevel structure, and the vacuum bubble movable end copper member is provided with a watchband contact finger groove for realizing the matching connection of the bevel and the watchband contact finger with the outer end of the vacuum bubble movable conducting rod;
and/or the insulating rod is made of epoxy resin; the insulating rod is of a square strip-shaped structure; the insulating rod is provided with an insulating rod skirt edge for increasing creepage distance;
And/or the aluminum clamping piece is of a hoop structure which is bilaterally symmetrical.
8. The gas box of claim 5, further comprising a bellows and a breaker transmission assembly, wherein the insulation pull rod is connected with the breaker operation mechanism through the breaker transmission assembly, and the breaker assembly is hermetically connected with the breaker operation mechanism through the bellows.
9. The gas tank of the rotary propelling gas-insulated metal-enclosed switchgear as claimed in claim 5, wherein the isolating and grounding part is fixed on the inner wall of the gas tank body in front of the gas tank body, and the isolating and static knife is fixed on the busbar copper bar;
the isolation moving cutter sleeve is fixedly connected to the vacuum bubble moving end copper part, and is used as a conductive piece to be electrically connected with the vacuum bubble moving end copper part; the vacuum bubble static end copper piece is connected with the outlet copper bar.
10. The gas-insulated metal-enclosed switchgear gas box according to claim 9, further comprising a wire outlet bushing, wherein the wire outlet bushing is located at the front lower part of the gas box body and arranged at the left, middle and right; the outgoing copper bar is supported and fixed through an outgoing copper bar supporting seat; the breaker component is connected with the outgoing copper bar and then penetrates out of the gas tank body through the outgoing sleeve;
And/or a bus expansion sleeve is also arranged on the gas box body; the bus extension sleeve comprises an A-phase bus extension sleeve, a B-phase bus extension sleeve and a C-phase bus extension sleeve; the bus expansion sleeve is arranged at the top of the gas tank body and is respectively fixed with a three-phase bus copper bar;
The bus copper bar is supported by a bus copper bar supporting seat, one end of the bus copper bar supporting seat is connected with the bus copper bar, and the other end of the bus copper bar supporting seat is fixedly connected to the inner wall of the air box body;
And/or an air tank pressure relief flange is arranged at the bottom of the air tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920575917.2U CN209748043U (en) | 2019-04-25 | 2019-04-25 | rotary propelling type gas tank of gas insulated metal-enclosed switchgear and three-station isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920575917.2U CN209748043U (en) | 2019-04-25 | 2019-04-25 | rotary propelling type gas tank of gas insulated metal-enclosed switchgear and three-station isolating switch |
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| CN209748043U true CN209748043U (en) | 2019-12-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011213A (en) * | 2019-04-25 | 2019-07-12 | 上海巴佩开关设备有限公司 | Rotating propulsion type Cubicle Gas-Insulated Switchgear gas tank and tri-station isolating switch |
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2019
- 2019-04-25 CN CN201920575917.2U patent/CN209748043U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011213A (en) * | 2019-04-25 | 2019-07-12 | 上海巴佩开关设备有限公司 | Rotating propulsion type Cubicle Gas-Insulated Switchgear gas tank and tri-station isolating switch |
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