CN215377260U - Arc extinguish chamber flow guide structure and metal-enclosed switchgear - Google Patents
Arc extinguish chamber flow guide structure and metal-enclosed switchgear Download PDFInfo
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- CN215377260U CN215377260U CN202120800647.8U CN202120800647U CN215377260U CN 215377260 U CN215377260 U CN 215377260U CN 202120800647 U CN202120800647 U CN 202120800647U CN 215377260 U CN215377260 U CN 215377260U
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- 230000003068 static effect Effects 0.000 claims abstract description 72
- 238000004880 explosion Methods 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 description 15
- 230000009286 beneficial effect Effects 0.000 description 13
- 230000005684 electric field Effects 0.000 description 8
- 238000009413 insulation Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 229910021645 metal ion Inorganic materials 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to an arc extinguish chamber flow guide structure and metal enclosed switch equipment. Explosion chamber water conservancy diversion structure includes: the static contact seat is provided with an axial overflowing hole; the static support is of a cylindrical structure extending in the front-back direction, the front end of the static support is connected to the rear end of the static contact seat, the static support is provided with a flow guide cavity, the front end of the flow guide cavity is open, the rear end of the flow guide cavity is closed, the front end of the flow guide cavity is open and is communicated with an inner cavity of the static contact seat through an axial flow through hole, and a radial flow through hole is formed in the side wall of the rear part of the flow guide cavity; the inner flow guide cover is sleeved on the outer side of the static support to form a first flow guide channel with the static support in a surrounding manner, the front end of the first flow guide channel is opened, the rear end of the first flow guide channel is closed, and the first flow guide channel is communicated with the flow guide cavity through the radial overflowing hole; the outer air guide sleeve is sleeved on the outer side of the inner air guide sleeve to form a second air guide channel together with the inner air guide sleeve, the rear end of the second air guide channel is opened, the front end of the second air guide channel is closed, and the second air guide channel is communicated with the front end opening of the first air guide channel.
Description
Technical Field
The utility model relates to an arc extinguish chamber flow guide structure and metal enclosed switch equipment.
Background
The gas insulated metal enclosed switchgear (GIS for short) is favored by users with the advantages of excellent insulating property, compact structure, less maintenance, safety, reliability and the like, and the insulating property to the ground is an important content to be considered for the design of the arc extinguish chamber of the circuit breaker because the switch components of the gas insulated metal enclosed switchgear are all sealed in the grounded aluminum or steel metal shell; particularly, as the demand of users for miniaturization and compactness of products is increasingly deepened, the insulation design condition of the arc extinguish chamber is more rigorous due to the smaller size of the cylinder.
In the opening and closing process of the GIS breaker, hot air flow generated by electric arc often carries a large amount of metal ions, and the thermal breakdown after the opening and closing can be caused by the unsmooth discharge and low discharge speed of the hot air flow; unreasonable design of the exhaust direction also often causes ground breakdown during the breaking process, and particularly, when large current of 50kA or more is broken, the ground breakdown condition is more prominent.
The circuit breaker with 252kV voltage level does not need to be provided with a closing resistor, a parallel capacitor and the like, all the circuit breaker are of split-phase structures, and the ground insulation of an arc extinguishing chamber is a restriction factor of the design of the diameter of a shell; therefore, compared with a shell with a higher voltage level, the shell of the arc extinguishing chamber can be greatly reduced, and the corresponding arc extinguishing chamber structure and the air guide sleeve structure need to be designed reasonably.
Chinese utility model patent with publication number CN203631362U discloses a dome for an arc extinguish chamber of a combined electrical apparatus, which is provided with meshes for discharging hot air flow. In the process of breaking the arc extinguish chamber, partial hot air flows directly blow to the cylinder wall after passing through the meshes of the flow guide cover, so that the cooling path of the hot air flows is short, the cooling is insufficient, and metal ions carried by the hot air flows are easy to cause ground breakdown.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a diversion structure of an arc extinguish chamber, which aims to solve the technical problem that in the prior art, in the process of opening and closing the arc extinguish chamber, partial hot air flow directly blows to a cylinder wall after passing through meshes of a diversion cover, so that the arc extinguish chamber is easy to break down; the utility model also aims to provide the metal-enclosed switchgear.
In order to achieve the purpose, the technical scheme of the arc extinguish chamber flow guide structure is as follows:
explosion chamber water conservancy diversion structure includes:
the static contact seat is provided with an axial overflowing hole;
the static support is of a cylindrical structure extending in the front-back direction, the front end of the static support is connected to the rear end of the static contact seat, the static support is provided with a flow guide cavity, the front end of the flow guide cavity is open, the rear end of the flow guide cavity is closed, the front end of the flow guide cavity is open and is communicated with an inner cavity of the static contact seat through an axial flow through hole, and a radial flow through hole is formed in the side wall of the rear part of the flow guide cavity;
the inner flow guide cover is sleeved on the outer side of the static support to form a first flow guide channel with the static support in a surrounding manner, the front end of the first flow guide channel is opened, the rear end of the first flow guide channel is closed, and the first flow guide channel is communicated with the flow guide cavity through the radial overflowing hole;
the outer air guide sleeve is sleeved on the outer side of the inner air guide sleeve to form a second air guide channel together with the inner air guide sleeve, the rear end of the second air guide channel is opened, the front end of the second air guide channel is closed, and the second air guide channel is communicated with the front end opening of the first air guide channel.
The beneficial effects are that: by arranging the inner and outer guide hoods, the airflow channel is in an S-shaped structure, and the length of the airflow cooling channel is increased under the condition that the axial size of the arc extinguish chamber is not increased, so that hot airflow can be fully cooled in the flowing process, the content of metal ions in the airflow is greatly reduced, and the miniaturization design of the arc extinguish chamber is facilitated; in addition, because the opening of the second flow guide channel faces backwards, hot air flow is prevented from blowing to the cylinder wall, and the ground insulation performance of the arc extinguishing chamber is improved.
Further, the first flow guide channel and/or the second flow guide channel are annular channels.
The beneficial effects are that: by the design, enough over-flow can be ensured, so that the airflow can flow out of the flow guide cavity quickly.
Furthermore, the inner air guide sleeve is fixedly connected to the end face of the rear end of the static support.
The beneficial effects are that: due to the design, the inner air guide sleeve is convenient to fix, and the air flow in the first air guide channel cannot be influenced.
Furthermore, the outer side of the static contact seat is sleeved with a shielding cover, and the shielding cover and the outer air guide cover are fixed on the static contact seat or the static support through a common screw.
The beneficial effects are that: the shielding cover is used for shielding an internal electric field so as to ensure that the electric field at the fracture is uniformly distributed; the shielding cover and the outer air guide cover are fixed through the shared screw, so that the assembling time of the shielding cover and the outer air guide cover can be shortened, and the assembling efficiency is improved.
Further, the outer air guide sleeve and the shielding cover are of an integrated structure.
The beneficial effects are that: the design is beneficial to the integral installation of the outer air guide sleeve and the shielding cover.
In order to achieve the purpose, the technical scheme of the metal closed switch device is as follows:
metal-enclosed switchgear, including the barrel, be equipped with the explosion chamber in the barrel, the quiet side of explosion chamber is equipped with explosion chamber water conservancy diversion structure, explosion chamber water conservancy diversion structure includes:
the static contact seat is provided with an axial overflowing hole;
the static support is of a cylindrical structure extending in the front-back direction, the front end of the static support is connected to the rear end of the static contact seat, the static support is provided with a flow guide cavity, the front end of the flow guide cavity is open, the rear end of the flow guide cavity is closed, the front end of the flow guide cavity is open and is communicated with an inner cavity of the static contact seat through an axial flow through hole, and a radial flow through hole is formed in the side wall of the rear part of the flow guide cavity;
the inner flow guide cover is sleeved on the outer side of the static support to form a first flow guide channel with the static support in a surrounding manner, the front end of the first flow guide channel is opened, the rear end of the first flow guide channel is closed, and the first flow guide channel is communicated with the flow guide cavity through the radial overflowing hole;
the outer air guide sleeve is sleeved on the outer side of the inner air guide sleeve to form a second air guide channel together with the inner air guide sleeve, the rear end of the second air guide channel is opened, the front end of the second air guide channel is closed, and the second air guide channel is communicated with the front end opening of the first air guide channel.
The beneficial effects are that: by arranging the inner and outer guide hoods, the airflow channel is in an S-shaped structure, and the length of the airflow cooling channel is increased under the condition that the axial size of the arc extinguish chamber is not increased, so that hot airflow can be fully cooled in the flowing process, the content of metal ions in the airflow is greatly reduced, and the miniaturization design of the arc extinguish chamber is facilitated; in addition, because the opening of the second flow guide channel faces backwards, hot air flow is prevented from blowing to the cylinder wall, and the ground insulation performance of the arc extinguishing chamber is improved.
Further, the first flow guide channel and/or the second flow guide channel are annular channels.
The beneficial effects are that: by the design, enough over-flow can be ensured, so that the airflow can flow out of the flow guide cavity quickly.
Furthermore, the inner air guide sleeve is fixedly connected to the end face of the rear end of the static support.
The beneficial effects are that: due to the design, the inner air guide sleeve is convenient to fix, and the air flow in the first air guide channel cannot be influenced.
Furthermore, the outer side of the static contact seat is sleeved with a shielding cover, and the shielding cover and the outer air guide cover are fixed on the static contact seat or the static support through a common screw.
The beneficial effects are that: the shielding cover is used for shielding an internal electric field so as to ensure that the electric field at the fracture is uniformly distributed; the shielding cover and the outer air guide cover are fixed through the shared screw, so that the assembling time of the shielding cover and the outer air guide cover can be shortened, and the assembling efficiency is improved.
Further, the outer air guide sleeve and the shielding cover are of an integrated structure.
The beneficial effects are that: the design is beneficial to the integral installation of the outer air guide sleeve and the shielding cover.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment 1 of a current-guiding structure of an arc-extinguishing chamber according to the present invention;
FIG. 2 is a schematic view of the structure of the gas flow of FIG. 1;
in the figure: 11-a static support; 12-an inner pod; 13-an outer pod; 14-a common bolt; 15-a shield; 16-stationary contact block; 17-a stationary arc contact; 18-stationary main contacts; 19-a flow guide cavity; 20-a first flow guide channel; 21-a second flow guide channel; 22-a guide cone; 23-a radial overflow hole; 24-axial overflowing hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "upper" and "lower" are based on the orientation and positional relationship shown in the drawings and are only for convenience of description of the present invention, and do not indicate that the referred device or component must have a specific orientation, and thus, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
Embodiment 1 of the current guiding structure of the arc extinguish chamber of the utility model:
as shown in fig. 1 and 2, the current guiding structure of the arc extinguish chamber comprises a static contact seat 16 and a static support 11, wherein the static contact seat 16 and the static support 11 are arranged along the front-back direction; the static contact seat 16 is provided with a static arc contact 17 and a static main contact 18, the static arc contact 17 is used for being in conductive contact with the dynamic arc contact, the static main contact 18 is used for being in conductive contact with the dynamic main contact, and the static arc contact 17 and the dynamic arc contact are in contact with the dynamic main contact before the static main contact.
In this embodiment, the stationary support 11 is a tubular structure extending in the front-rear direction, the front end of the stationary support 11 is connected to the rear end of the stationary contact base 16, the stationary support 11 has a flow guide cavity 19, and the front end of the flow guide cavity 19 is open and the rear end is closed.
In this embodiment, the stationary contact base 16 has an axial through-flow hole 24, and the front end opening of the flow guiding cavity 19 is communicated with the inner cavity of the stationary contact base 16 through the axial through-flow hole 24.
In this embodiment, an inner air guide sleeve 12 is sleeved outside the static support 11, and the inner air guide sleeve 12 and the static support 11 are coaxially arranged; the inner air guide sleeve 12 and the static support 11 enclose a first air guide channel 20, and the front end of the first air guide channel 20 is open and the rear end is closed; the guide cavity 19 has a radial through-flow hole 23 on the rear side wall, and the first guide channel 20 is communicated with the guide cavity 19 through the radial through-flow hole 23. Wherein, radial overflowing hole 23 is provided with a plurality of and is arranged in the array to guarantee the excessive flow of air current.
In this embodiment, the outer air guide sleeve 13 is sleeved on the outer side of the inner air guide sleeve 12, and the inner air guide sleeve 12 and the outer air guide sleeve 13 are coaxially arranged; the outer air guide sleeve 13 and the inner air guide sleeve 12 enclose a second air guide channel 21, the rear end of the second air guide channel 21 is open, the front end of the second air guide channel is closed, and the second air guide channel 21 is communicated with the front end of the first air guide channel 20.
In this embodiment, the inner airflow guide sleeve 12 and the outer airflow guide sleeve 13 are both circular tubular structures, that is, the first airflow guide channel 20 and the second airflow guide channel 21 are both annular channels, so as to ensure sufficient over-flow, so that airflow flows out from the airflow guide cavity quickly, and meanwhile, the airflow guide sleeves and the cylinder form a coaxial cylindrical electric field, so that the electric field is improved, and the insulation performance is improved.
In this embodiment, the inner air guide sleeve 12 is fixedly connected to the rear end face of the stationary support 11 by screws, which not only facilitates the fixing of the inner air guide sleeve, but also does not affect the flow of the air flow in the first air guide channel 20.
In this embodiment, a diversion cone 22 is disposed on the bottom wall of the rear portion of the diversion cavity 19, and the diversion cone 22 is used for guiding hot air to the radial through-flow hole 23, so that hot air generated by electric arc in the process of breaking the arc extinguishing chamber is quickly led out of the diversion cavity 19, and the insulation performance of the fracture is improved.
In this embodiment, the outer side of the stationary contact base 16 is sleeved with a shielding case 15, the stationary arc contact 17 and the stationary main contact 18 are located in the shielding case 15, and the shielding case 15 is used for shielding an internal electric field to ensure that a fracture electric field is uniformly distributed; the shielding cover 15 and the outer air guide sleeve 13 are of an integral structure, namely the shielding cover 15 and the outer air guide sleeve 13 are integrally processed and formed, and the shielding cover 15 and the outer air guide sleeve 13 are fixed on the static support 11 through the shared screw 14. In other embodiments, the shield and the outer pod are secured to the stationary contact block by a common screw.
In this embodiment, the inner air guide sleeve 12 and the outer air guide sleeve 13 are processed by spin welding or tailor welding, and both the inner air guide sleeve and the outer air guide sleeve are made of stainless steel plates.
In the process of switching on and off the arc extinguish chamber, the flow path of hot air flow is as shown in fig. 2, the hot air flow enters the flow guide cavity 19 from the axial through hole 24 in the static contact base 16 and flows backwards from the front in the flow guide cavity 19; after the hot air flow contacts the diversion cone 22, the hot air flow is quickly guided to the radial through-flow hole 23 from the surface of the diversion cone 22, enters the first diversion channel 20 through the radial through-flow hole 23, and then moves from back to front in the first diversion channel 20; then, the airflow collides with the flange of the stationary support 11 and enters the second guide passage 21, flows backward from the front side in the second guide passage 21, and finally exits the outer guide cover 13.
In this embodiment, the flow area of the guide cavity 19 is smaller than or equal to the flow area of all the radial through holes 23, the flow area of all the radial through holes 23 is smaller than or equal to the flow area of the first guide passage 20, and the flow area of the first guide passage 20 is smaller than or equal to the flow area of the second guide passage 21, so as to ensure smooth flow of the air flow.
In the arc extinguish chamber flow guide structure in the embodiment, the inner and outer flow guide covers are arranged, so that the airflow channel is in an S-shaped structure, the length of the airflow cooling channel is increased under the condition that the axial size of the arc extinguish chamber is not increased, hot airflow can be fully cooled in the flowing process, the content of metal ions in the airflow is greatly reduced, and the arc extinguish chamber is beneficial to the miniaturization design; in addition, because the opening of the second flow guide channel faces backwards, hot air flow is prevented from blowing to the cylinder wall, and the ground insulation performance of the arc extinguishing chamber is improved.
Embodiment 2 of the current guiding structure of the arc extinguish chamber of the utility model:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the inner pod 12 and the outer pod 13 are both circular cylindrical structures, so that the first flow guide passage 20 and the second flow guide passage 21 are both annular passages. In this embodiment, the inner air guide sleeve and the outer air guide sleeve are both of a cylindrical structure, for example, the inner air guide sleeve is provided, and the wall surface of the inner air guide sleeve is of a corrugated structure, so that the inner air guide sleeve and the static support seat enclose a plurality of channel units, the channel units are arranged at intervals along the axial direction of the static support seat, and all the channel units form a first air guide channel together.
Embodiment 3 of the current guiding structure of the arc extinguish chamber of the utility model:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the inner airflow guide sleeve 12 is fixedly connected to the rear end surface of the stationary support 11. In this embodiment, the inner dome is fixedly attached to the outer circumferential surface of the stationary support.
Embodiment 4 of the current guiding structure of the arc extinguish chamber of the utility model:
the present embodiment is different from embodiment 1 in that in embodiment 1, the outer air guide sleeve 13 and the shield sleeve 15 are an integral structure, and the shield sleeve 15 and the outer air guide sleeve 13 are fixed on the stationary support 11 by the common screw 14. In this embodiment, the outer airflow guide cover and the shielding cover are of a split structure, and the shielding cover and the outer airflow guide cover are fixed on the stationary support through a common screw. In other embodiments, the shield can and the outer air guide sleeve can be fixed respectively, that is, the shield can is fixed on the static support through a screw, and the outer air guide sleeve is fixed on the static contact base through a screw.
In an embodiment of the metal-enclosed switchgear of the present invention, the metal-enclosed switchgear in this embodiment includes a cylinder, an arc extinguish chamber is disposed in the cylinder, and an arc extinguish chamber diversion structure is disposed on a stationary side of the arc extinguish chamber, where the arc extinguish chamber diversion structure is the same as that described in any one of embodiments 1 to 4 of the arc extinguish chamber diversion structure, and is not described herein again.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. Explosion chamber water conservancy diversion structure, its characterized in that includes:
the static contact seat is provided with an axial overflowing hole;
the static support is of a cylindrical structure extending in the front-back direction, the front end of the static support is connected to the rear end of the static contact seat, the static support is provided with a flow guide cavity, the front end of the flow guide cavity is open, the rear end of the flow guide cavity is closed, the front end of the flow guide cavity is open and is communicated with an inner cavity of the static contact seat through an axial flow through hole, and a radial flow through hole is formed in the side wall of the rear part of the flow guide cavity;
the inner flow guide cover is sleeved on the outer side of the static support to form a first flow guide channel with the static support in a surrounding manner, the front end of the first flow guide channel is opened, the rear end of the first flow guide channel is closed, and the first flow guide channel is communicated with the flow guide cavity through the radial overflowing hole;
the outer air guide sleeve is sleeved on the outer side of the inner air guide sleeve to form a second air guide channel together with the inner air guide sleeve, the rear end of the second air guide channel is opened, the front end of the second air guide channel is closed, and the second air guide channel is communicated with the front end opening of the first air guide channel.
2. The arc chute flow directing structure of claim 1, wherein the first flow directing channel and/or the second flow directing channel is an annular channel.
3. The arc extinguish chamber flow guiding structure according to claim 1 or 2, wherein the inner flow guiding cover is fixedly connected to the rear end face of the static support.
4. The arc extinguish chamber flow guiding structure as claimed in claim 1 or 2, wherein a shielding cover is sleeved outside the static contact seat, and the shielding cover and the outer flow guiding cover are fixed on the static contact seat or the static support through a common screw.
5. The arc chute current guiding structure of claim 4, wherein the outer current guiding housing and the shielding housing are a unitary structure.
6. Metal-enclosed switchgear, including the barrel, be equipped with the explosion chamber in the barrel, the quiet side of explosion chamber is equipped with explosion chamber water conservancy diversion structure, its characterized in that, explosion chamber water conservancy diversion structure includes:
the static contact seat is provided with an axial overflowing hole;
the static support is of a cylindrical structure extending in the front-back direction, the front end of the static support is connected to the rear end of the static contact seat, the static support is provided with a flow guide cavity, the front end of the flow guide cavity is open, the rear end of the flow guide cavity is closed, the front end of the flow guide cavity is communicated with the axial overflowing hole, and the side wall of the rear part of the flow guide cavity is provided with a radial overflowing hole;
the inner flow guide cover is sleeved on the outer side of the static support to form a first flow guide channel with the static support in a surrounding manner, the front end of the first flow guide channel is opened, the rear end of the first flow guide channel is closed, and the first flow guide channel is communicated with the flow guide cavity through the radial overflowing hole;
the outer air guide sleeve is sleeved on the outer side of the inner air guide sleeve to form a second air guide channel together with the inner air guide sleeve, the rear end of the second air guide channel is opened, the front end of the second air guide channel is closed, and the second air guide channel is communicated with the front end opening of the first air guide channel.
7. The metal enclosed switchgear according to claim 6, wherein the first flow guiding channel and/or the second flow guiding channel is an annular channel.
8. The metal enclosed switchgear according to claim 6 or 7, wherein the inner dome is fixedly attached to a rear end surface of the stationary support.
9. The metal enclosed switchgear according to claim 6 or 7, wherein the outside of the stationary contact block is sleeved with a shielding cover, and the shielding cover and the outer air guide cover are fixed on the stationary contact block or the stationary support through a common screw.
10. The metal enclosed switchgear of claim 9, wherein the outer pod and the shield are a unitary structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120800647.8U CN215377260U (en) | 2021-04-19 | 2021-04-19 | Arc extinguish chamber flow guide structure and metal-enclosed switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120800647.8U CN215377260U (en) | 2021-04-19 | 2021-04-19 | Arc extinguish chamber flow guide structure and metal-enclosed switchgear |
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| Publication Number | Publication Date |
|---|---|
| CN215377260U true CN215377260U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120800647.8U Active CN215377260U (en) | 2021-04-19 | 2021-04-19 | Arc extinguish chamber flow guide structure and metal-enclosed switchgear |
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| Country | Link |
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| CN (1) | CN215377260U (en) |
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- 2021-04-19 CN CN202120800647.8U patent/CN215377260U/en active Active
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