CN209748045U - Gas-insulated metal-enclosed switchgear - Google Patents
Gas-insulated metal-enclosed switchgear Download PDFInfo
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- CN209748045U CN209748045U CN201920575603.2U CN201920575603U CN209748045U CN 209748045 U CN209748045 U CN 209748045U CN 201920575603 U CN201920575603 U CN 201920575603U CN 209748045 U CN209748045 U CN 209748045U
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Abstract
The utility model discloses a gas-insulated metal-enclosed switchgear, a bus chamber, a gas tank pressure relief flange, a pressure relief channel chamber, a high-voltage cable chamber, a secondary instrument box and a mechanism operation chamber are arranged in a cabinet body; a three-position isolating switch and a circuit breaker are arranged in the gas tank; the mechanism operating chamber is positioned at the front part of the gas tank body, and an isolation operating mechanism and a circuit breaker operating mechanism are arranged in the mechanism operating chamber; the high-voltage cable chamber and the pressure relief channel chamber are positioned at the bottom of the air box body and are separated by an air chamber partition plate; the air box decompression flange is arranged at the bottom of the air box body and communicated with the decompression channel chamber; the circuit breaker in the gas tank is connected with the outgoing copper bar and then penetrates out of the gas tank body through the outgoing sleeve and then enters the high-voltage cable chamber; the secondary instrument box is arranged on the air box body; the bus chamber is positioned at the top or the side of the gas box body; and the bus in the gas box passes through the gas box body through a bus extension sleeve and then is arranged in the bus chamber.
Description
Technical Field
the utility model belongs to the technical field of power transmission and distribution equipment of electric power system makes, concretely relates to gas-insulated metal-enclosed switchgear.
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 gas insulated metal enclosed switchgear, called C-GIS for short, is a power distribution equipment developed at the end of the last century and specially applied to a medium-voltage system, and the outstanding safety and reliability enable the power distribution 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 defects existing in the prior art, the utility model provides a gas insulated metal enclosed switchgear.
a gas insulated metal enclosed switchgear comprises a cabinet body, wherein a bus chamber, a gas tank pressure relief flange, a pressure relief channel chamber, a high-voltage cable chamber, a secondary instrument box and a mechanism operation chamber are arranged in the cabinet body;
A three-position isolating switch and a circuit breaker are arranged in the gas box;
the mechanism operating chamber is positioned at the front part of the gas tank body, and an isolation operating mechanism and a circuit breaker operating mechanism are arranged in the mechanism operating chamber; the isolation operating mechanism and the circuit breaker operating mechanism are arranged up and down;
The high-voltage cable chamber and the pressure relief channel chamber are positioned at the bottom of the air box body and are separated by an air chamber partition plate;
The air box decompression flange is arranged at the bottom of the air box body and is communicated with the decompression channel chamber;
the circuit breaker in the gas box is connected with the outgoing copper bar and then penetrates out of the gas box body through the outgoing sleeve and then enters the high-voltage cable chamber;
the secondary instrument box is arranged on the air box body;
The bus chamber is positioned at the top or the side of the gas box body; and the bus in the gas box passes through the gas box body through a bus extension sleeve and then is arranged in the bus chamber.
as a preferred scheme, the three-station isolating switch comprises a grounding contact electrically connected with a grounding loop, a main knife contact electrically connected with a bus, a moving knife blade, a moving knife support, a moving knife crank arm, an insulating pull rod, a transmission crank arm, a worm wheel and a worm;
the movable knife blade is hinged on the movable knife support and can rotate around a hinged point; one end of the movable cutter crank arm is fixedly connected to the movable cutter blade, the other end of the movable cutter crank arm is connected with one end of an insulating pull rod, the other end of the insulating pull rod is connected with a transmission crank arm, and the transmission crank arm is fixedly connected with a central rotating shaft of the worm wheel;
The worm wheel is meshed with the worm, and the worm is connected with the isolation operating mechanism;
The main knife contact is positioned above the movable knife blade, and the grounding contact is positioned behind the movable knife blade;
under the active action force of the isolation operating mechanism, the worm moves back and forth to drive the worm wheel to rotate through the mutual matching and action of the worm and the worm wheel, the movable cutter blade is driven to rotate around a hinge point through the transmission connecting lever, the insulating pull rod and the movable cutter connecting lever in sequence, and the contact of the movable cutter blade rotates between the main cutter contact and the grounding contact to realize rotary switching-off, switching-on or grounding.
Furthermore, the gas insulated metal enclosed switchgear, the transmission connecting lever and the central rotating shaft of the worm wheel are fixedly connected through splines.
Preferably, the gas tank comprises a gas tank body, and a three-position disconnecting switch and a circuit breaker are arranged in the gas tank body;
The moving blade support of the three-station isolating switch is fixed at the rear end of the pole of the circuit breaker;
The lower end of each phase of breaker pole is supported and fixed by a pole supporting insulator;
The worm of the three-station isolating switch is connected with the isolating operation mechanism, and rotary opening and closing or grounding is realized by operating the isolating operation mechanism;
The transmission part of the circuit breaker is connected with the circuit breaker operating mechanism, and the circuit breaker operating mechanism is operated to realize the on-off of the vacuum arc extinguish chamber in the circuit breaker.
As a preferred scheme, the outlet sleeve is positioned at the front part of the gas tank body and is arranged in the left, middle and right directions; the circuit breaker is connected with the outgoing copper bar and then penetrates out of the gas tank body through the outgoing sleeve.
Preferably, the gas insulated metal-enclosed switchgear further comprises a grounding part, the grounding part is located at the rear part in the gas tank body, a grounding contact is fixedly connected to the upper end of the grounding part, and grounding current is led out of the gas tank body through a grounding copper block at the lower end of the grounding part.
As a preferred scheme, a bus expansion sleeve is further installed on the air 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.
as the preferred scheme, the front part of the air box body is provided with an isolation fracture observation window for an operator to observe the condition of an isolation position.
Preferably, the gas insulated metal-enclosed switchgear further comprises a bearing plate, wherein the bearing plate is used for assembling and supporting the central rotating shaft of the worm gear; the supporting plate is fixed on the inner wall of the air box body.
as a preferred scheme, the cabinet body adopts a stainless steel plate welding structure.
In addition, the pole of the circuit breaker is made of epoxy resin or composite insulating material, the vacuum bubble can be sealed or can be installed in the epoxy resin or composite insulating material at a later stage, the exposed electrified part adopts a circular voltage-sharing piece, an oblate feeder line and the like, the electric field of the electrified part is improved, and the corresponding insulation level can be achieved even under normal atmospheric pressure.
has the advantages that: the utility model provides a gas-insulated metal-enclosed switchgear has following advantage:
1. The isolating switch adopts a round copper knife switch type, so that the insulating capacity of a fracture is increased. The isolating switch adopts a rotary knife switch type, and the knife switch is fixed at the rear end of the pole of the circuit breaker.
2. The gas tank bottom is equipped with the pressure release flange, and the pressure release flange adopts the sheet metal, establishes the gas tank bottom to the weakest place of the cabinet body, and the release passage is special and with the environmental isolation. The cabinet body is provided with a special pressure relief channel, and finally, air enters the cable trench. A special clapboard is arranged between the cable chamber and the pressure relief channel for separation.
3. The bus extension sleeve can be expanded at the top of the cabinet body or expanded at the side of the cabinet body. The utility model discloses a multiple voltage-sharing and insulating means can realize the miniaturization.
4. The breaker pole can be pre-fixed with a vacuum bulb and can be mounted at a later stage, so that the breaker pole can be flexibly selected and used, and the requirements of different users are met.
5. The utility model discloses simple structure, easily production tissue, non-maintaining.
drawings
Fig. 1 is a front view of a gas insulated metal enclosed switchgear of an embodiment;
Fig. 2 is a front view of the gas insulated metal enclosed switchgear of the embodiment;
Fig. 3 is a bottom view of the gas-insulated metal-enclosed switchgear of the embodiment;
fig. 4 is a top view of the gas insulated metal enclosed switchgear of the embodiment;
FIGS. 5 to 7 are schematic structural views of an air box in the embodiment;
FIG. 8 and FIG. 9 are schematic structural views of a three-position isolating switch in the gas tank of the embodiment;
FIG. 10 is a schematic grounding diagram of a three-position disconnecting switch according to an embodiment;
fig. 11 is a closing schematic diagram of the three-position disconnecting switch according to the embodiment;
In the figure: the device comprises a three-station isolating switch 1, a breaker pole 2, a gas tank body 3, an isolating operation mechanism 4, a breaker operation mechanism 5, a high-voltage cable chamber 6, a pressure relief channel chamber 7, a secondary instrument box 8, a mechanism operation chamber 9 and a bus chamber 10;
The device comprises a ground contact 101, a main knife contact 102, a movable knife blade 103, a movable knife support 104, a movable knife crank arm 105, an insulating pull rod 106, a transmission crank arm 107, a worm gear 108 and a worm 109; the terminal post supporting insulator 201, the outgoing line copper bar 202, the outgoing line sleeve 301, the grounding part 302 and the grounding copper block 303; a bus expansion sleeve 304, an air box pressure relief flange 305, an isolation fracture observation window 306 and a support plate 307; a plenum partition 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, 2, 3, and 4, a gas insulated metal-enclosed switchgear includes a cabinet body, in which a bus bar chamber 10, a gas tank, a pressure relief channel chamber 7, a high voltage cable chamber 6, a secondary instrument box 8, and a mechanism operation chamber 9 are disposed;
a three-station isolating switch 1 and a circuit breaker are arranged in the gas box body;
an isolation operation mechanism 4 and a circuit breaker operation mechanism 5 are arranged in the mechanism operation chamber 9; the isolation operating mechanism 4 and the circuit breaker operating mechanism 5 are arranged up and down;
the high-voltage cable chamber 6 and the pressure relief channel chamber 7 are positioned at the bottom of the air box body 3, and the high-voltage cable chamber 6 and the pressure relief channel chamber 7 are separated by an air chamber partition plate 701;
the air box decompression flange 305 is arranged at the bottom of the air box body 3 and is communicated with the decompression channel chamber 7;
the circuit breaker in the air box is connected with the outgoing copper bar 202, penetrates out of the air box body 3 through the outgoing sleeve 301 and then enters the high-voltage cable chamber 6;
The secondary instrument box 8 is arranged on the air box body 3;
the bus chamber 10 is positioned at the top or the side of the gas box body 3; the bus bar in the gas box is arranged in the bus bar chamber 10 after passing through the gas box body 3 through a bus bar extension sleeve 304.
In some embodiments, as shown in fig. 5 to 7, the gas box comprises a gas box body 3, and a three-position disconnecting switch 1 and a circuit breaker are arranged in the gas box body 3;
An isolation operating mechanism 4 and a circuit breaker operating mechanism 5 are arranged at the front part of the air box body 3; the isolation operating mechanism 4 and the circuit breaker operating mechanism 5 are arranged up and down; the structure of the upper isolation lower circuit breaker is formed;
The moving blade support 104 of the three-station isolating switch is fixed at the rear end of the pole of the circuit breaker;
The lower end of each phase of breaker pole 2 is supported and fixed by a pole support insulator 201; for ensuring the strength of the disconnector and circuit breaker.
the worm 109 of the three-station isolating switch 1 is connected with the isolating operation mechanism 4, and rotary opening and closing or grounding is realized by operating the isolating operation mechanism 4;
the transmission part of the circuit breaker is connected with the circuit breaker operating mechanism 5, and the vacuum arc-extinguishing chamber in the circuit breaker is opened and closed by operating the circuit breaker operating mechanism 5.
in some embodiments, as shown in fig. 8 and 9, a three-position disconnecting switch 1 includes: the grounding contact 101 is electrically connected with a grounding loop, the main knife contact 102 is electrically connected with a bus, the movable knife blade 103, the movable knife support 104, the movable knife crank arm 105, the insulating pull rod 106, the transmission crank arm 107, the worm gear 108 and the worm 109;
The movable knife blade 103 is hinged on the movable knife support 104 and can rotate around a hinge point; one end of the movable knife crank arm 105 is fixedly connected to the movable knife blade 103, the other end of the movable knife crank arm is connected with one end of an insulating pull rod 106 through a bolt and a nut, the other end of the insulating pull rod 106 is connected with a transmission crank arm 107, and the transmission crank arm 107 is fixedly connected with a central rotating shaft of a worm gear 108;
As shown in fig. 9, the worm wheel 108 is engaged with a worm 109, and the worm 109 is connected with the isolation operating mechanism 4;
the main blade contact 102 is positioned above the movable blade 103, and the grounding contact 101 is positioned behind the movable blade 103;
under the active action force of the isolation operating mechanism 4, through the mutual matching and action of the worm 109 and the worm wheel 108, the worm 109 moves back and forth to drive the worm wheel 108 to rotate, and then the movable blade 103 is driven to rotate around a hinge point through the transmission connecting lever 107, the insulation pull rod 106 and the movable connecting lever 105 in sequence, so that the contact of the movable blade 103 rotates between the main blade contact 102 and the grounding contact 101 to realize rotary opening, closing or grounding. The three-position isolating switch 1 adopts a rotary type and is driven by the worm 109 and the worm gear 108, so that the whole operation is more convenient and faster.
as shown in fig. 10, the contact of the moving blade 103 is in contact with the ground contact 101, so that the three-position disconnecting switch 1 is in the ground position.
As shown in fig. 11, the contact of the moving blade 103 contacts the main blade contact 102, so that the three-position disconnecting switch 1 is located at the switching-on position.
Preferably, in some embodiments, as shown in fig. 8, the transmission crank arm 107 is fixedly connected with the central rotating shaft of the worm wheel 108 through a spline.
In some embodiments, as shown in fig. 1, the gas-insulated metal-enclosed switchgear gas box 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 is arranged in the left, middle and right direction; the circuit breaker is connected with the outgoing copper bar 202 and then penetrates out of the air box body 3 through the outgoing sleeve 301.
in the gas tank of the gas insulated metal enclosed switchgear, the grounding part 302 is positioned at the rear part in the gas tank body 3, the upper end of the grounding part 302 is fixedly connected with the grounding contact 101, and the lower end of the grounding part 302 guides grounding current out of the gas tank body 3 through the grounding copper block 303.
in some embodiments, as shown in fig. 5, a bus bar extension sleeve 304 is also mounted on the gas box body 3; the bus expansion sleeve 304 comprises an A-phase bus expansion sleeve, a B-phase bus expansion sleeve and a C-phase bus expansion sleeve. The A-phase bus extension sleeve, the B-phase bus extension sleeve and the C-phase bus extension sleeve can be arranged at the top of the gas box body 3 and can also be arranged at one side of the gas box body 3. The bus chamber 10 adopts a cabinet body top expansion mode or a cabinet body side expansion mode according to the installation position of the bus extension sleeve.
in some embodiments, as shown in fig. 5, the bottom of the air box body 3 is provided with an air box pressure relief flange 305.
In some embodiments, as shown in fig. 5, the front of the air box body 3 is provided with an isolation fracture observation window 306 for an operator to observe the isolation position.
In some embodiments, as shown in fig. 5, 8 and 9, the gas-insulated metal enclosed switchgear gas box further comprises a bearing plate 307, wherein the bearing plate 307 is used for assembling and supporting the central rotating shaft of the worm gear 108; the support plate 307 is fixed to the inner wall of the gas tank body 3.
as a preferred scheme, the cabinet body is of a stainless steel plate welding structure.
The utility model provides a gas-insulated metal-enclosed switchgear, three station isolator 1 adopt rotatory knife switch formula, move the knife switch and move the knife support through fixing at the circuit breaker rear end, circuit breaker utmost point post 2 adopts epoxy or composite insulation material, but vacuum bubble solid seal also the later stage is installed in epoxy or composite insulation material, naked electrified part adopts the circular shape equalizer, modes such as oblate feeder improve electrified part electric field, even also can reach corresponding insulating level under normal atmospheric pressure.
2. the load switch transmission adopts a mode that a main shaft is directly driven, and the movable knife blade is rotated through transmission.
3. The insulating gas may be dry air, high purity nitrogen, or an insulating gas such as SF 6.
4. The sealed air box body adopts a laser welding form, the change of the internal environment is monitored by adopting modes such as a barometer, a humidity indicator and the like, and the high reliability of insulation is ensured.
5. the bus extension sleeve 304 can be expanded at the top of the cabinet body or expanded at the side of the cabinet body.
6. the bottom of the gas tank body 3 is provided with a gas tank pressure relief flange 305, the tank body is provided with a special pressure relief channel chamber 7, and finally gas enters the cable trench.
7. a special air chamber partition plate 701 is arranged between the high-voltage cable chamber 6 and the pressure relief channel chamber 7 for separating.
The utility model discloses a gas insulated metal enclosed switchgear adopts corrosion resistant plate welded structure, adopts laser welding technique, synchronous evacuation and inflation technique, SF6 gas leak hunting technique, adopts neotype solid interface insulation grafting technique, is applied to between each air chamber, between the cabinet body and the connection of external high voltage component such as voltage transformer, arrester, and insulating medium can adopt insulating gas such as compressed air, N2 and SF 6. The explosion-proof membrane and the pressure release channel are designed in the design and production process of the equipment, so that the probability of injury of maintenance personnel caused by accidents is almost reduced to zero. The totally enclosed cabinet body structure isolates conductors and some high-voltage elements from the external environment completely, thereby avoiding the influence of damp heat, condensation, air pollution and the like caused by weather and environmental change, and the application of a laser welding process, a novel solid insulation interface splicing technology and a silica gel material greatly improves the sealing performance between air chambers of the cabinet body, the cabinet body and the external environment, the cabinet body strength and the like.
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 gas insulated metal enclosed switchgear comprises a cabinet body, and is characterized in that a bus chamber, a gas tank pressure relief flange, a pressure relief channel chamber, a high-voltage cable chamber, a secondary instrument box and a mechanism operation chamber are arranged in the cabinet body;
a three-position isolating switch and a circuit breaker are arranged in the gas box;
the mechanism operating chamber is positioned at the front part of the gas tank body, and an isolation operating mechanism and a circuit breaker operating mechanism are arranged in the mechanism operating chamber; the isolation operating mechanism and the circuit breaker operating mechanism are arranged up and down;
The high-voltage cable chamber and the pressure relief channel chamber are positioned at the bottom of the air box body and are separated by an air chamber partition plate;
the air box decompression flange is arranged at the bottom of the air box body and is communicated with the decompression channel chamber;
the circuit breaker in the gas box is connected with the outgoing copper bar and then penetrates out of the gas box body through the outgoing sleeve and then enters the high-voltage cable chamber;
The secondary instrument box is arranged on the air box body;
the bus chamber is positioned at the top or the side of the gas box body; and the bus in the gas box passes through the gas box body through a bus extension sleeve and then is arranged in the bus chamber.
2. gas-insulated metal-enclosed switchgear according to claim 1,
The three-station isolating switch comprises a grounding contact electrically connected with a grounding loop, a main knife contact electrically connected with a bus, a moving knife blade, a moving knife support, a moving knife crank arm, an insulating pull rod, a transmission crank arm, a worm wheel and a worm;
the movable knife blade is hinged on the movable knife support and can rotate around a hinged point; one end of the movable cutter crank arm is fixedly connected to the movable cutter blade, the other end of the movable cutter crank arm is connected with one end of an insulating pull rod, the other end of the insulating pull rod is connected with a transmission crank arm, and the transmission crank arm is fixedly connected with a central rotating shaft of the worm wheel;
The worm wheel is meshed with the worm, and the worm is connected with the isolation operating mechanism;
the main knife contact is positioned above the movable knife blade, and the grounding contact is positioned behind the movable knife blade;
Under the active action force of the isolation operating mechanism, the worm moves back and forth to drive the worm wheel to rotate through the mutual matching and action of the worm and the worm wheel, the movable cutter blade is driven to rotate around a hinge point through the transmission connecting lever, the insulating pull rod and the movable cutter connecting lever in sequence, and the contact of the movable cutter blade rotates between the main cutter contact and the grounding contact to realize rotary switching-off, switching-on or grounding.
3. gas-insulated metal-enclosed switchgear according to claim 2,
The transmission crank arm is fixedly connected with the central rotating shaft of the worm wheel through a spline.
4. gas-insulated metal-enclosed switchgear according to claim 2,
the gas tank comprises a gas tank body, and a three-station isolating switch and a circuit breaker are arranged in the gas tank body;
The moving blade support of the three-station isolating switch is fixed at the rear end of the pole of the circuit breaker;
The lower end of each phase of breaker pole is supported and fixed by a pole supporting insulator;
the worm of the three-station isolating switch is connected with the isolating operation mechanism, and rotary opening and closing or grounding is realized by operating the isolating operation mechanism;
The transmission part of the circuit breaker is connected with the circuit breaker operating mechanism, and the circuit breaker operating mechanism is operated to realize the on-off of the vacuum arc extinguish chamber in the circuit breaker.
5. gas-insulated metal-enclosed switchgear according to claim 4,
the outlet sleeve is positioned at the front part of the gas tank body and is arranged in the left, middle and right directions; the circuit breaker is connected with the outgoing copper bar and then penetrates out of the gas tank body through the outgoing sleeve.
6. The gas insulated metal enclosed switchgear of claim 4, further comprising a grounding portion, said grounding portion being located at the rear portion of the gas tank body, the upper end of the grounding portion being fixedly connected to the grounding contact, the lower end of the grounding portion guiding the grounding current to the outside of the gas tank body through the grounding copper block.
7. the gas insulated metal enclosed switchgear according to claim 1, wherein a bus bar extension sleeve is further installed on said 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.
8. the gas insulated metal enclosed switchgear according to claim 4, wherein said gas box body has an isolation fracture observation window at its front for operator to observe the condition of isolation position.
9. the gas insulated metal enclosed switchgear according to claim 4, further comprising a support plate for fitting and supporting said worm wheel central rotating shaft; the supporting plate is fixed on the inner wall of the air box body.
10. The gas insulated metal enclosed switchgear according to claim 4, wherein said cabinet is of welded structure of stainless steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920575603.2U CN209748045U (en) | 2019-04-25 | 2019-04-25 | Gas-insulated metal-enclosed switchgear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920575603.2U CN209748045U (en) | 2019-04-25 | 2019-04-25 | Gas-insulated metal-enclosed switchgear |
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| CN209748045U true CN209748045U (en) | 2019-12-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962426A (en) * | 2019-04-25 | 2019-07-02 | 上海巴佩开关设备有限公司 | A kind of Cubicle Gas-Insulated Switchgear |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962426A (en) * | 2019-04-25 | 2019-07-02 | 上海巴佩开关设备有限公司 | A kind of Cubicle Gas-Insulated Switchgear |
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