CN114362000A - Ring main unit air box and ring main unit - Google Patents
Ring main unit air box and ring main unit Download PDFInfo
- Publication number
- CN114362000A CN114362000A CN202111647023.8A CN202111647023A CN114362000A CN 114362000 A CN114362000 A CN 114362000A CN 202111647023 A CN202111647023 A CN 202111647023A CN 114362000 A CN114362000 A CN 114362000A
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- plate
- main unit
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- box
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 15
- 238000002955 isolation Methods 0.000 claims description 8
- 239000003351 stiffener Substances 0.000 claims 3
- 241000274582 Pycnanthus angolensis Species 0.000 description 15
- 239000011087 paperboard Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 230000014509 gene expression Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005728 strengthening Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention relates to a ring main unit air box and a ring main unit, wherein the ring main unit air box comprises a box body, an isolating switch and a switch supporting mechanism, wherein the box body comprises a front box plate and a rear sealing plate; the isolating switch is arranged in the box body; the switch supporting mechanism is used for supporting the isolating switch and comprises at least two support rods and a reinforcing rib connected with the at least two support rods, one end of each support rod is connected with the front box plate, and the other end of each support rod is connected with the rear sealing plate. Different from the prior art, the support rods are respectively supported between the front box plate and the rear sealing plate, at least two support rods can form a whole through the reinforcing ribs, and the stress of a single support rod is transmitted to all the support rods, so that the support force of the single support rod is improved, the inward collapse of the support rods is avoided, and the safety of the ring main unit is improved.
Description
Technical Field
The invention relates to the technical field of ring main units, in particular to a ring main unit air box and a ring main unit.
Background
The Ring Main Unit (Ring Main Unit) is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval Ring Main power supply Unit, and the core part of the Ring Main Unit adopts a load switch and a fuse. The power supply device has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like.
In the process of implementing the invention, the inventor finds that the following problems exist in the prior art:
in the prior art, the support rod is used for supporting the isolating switch, but in the using process, the isolating switch needs to frequently act due to the fact that the isolating switch is too heavy, the support rod is easily collapsed towards the inner pressure, and the whole ring main unit is caused to lose efficacy.
Disclosure of Invention
Therefore, a ring main unit air box and a ring main unit are needed to be provided, and the technical problem that in the prior art, a stay bar is prone to inward pressure collapse to cause failure of the whole ring main unit is solved.
To achieve the above object, the inventor provides a ring main unit air box, comprising
The box body comprises a front box plate and a rear sealing plate;
the isolating switch is arranged in the box body; and
the switch supporting mechanism is used for supporting the isolating switch and comprises at least two support rods and a reinforcing rib connected with the at least two support rods, one end of each support rod is connected with the front box plate, and the other end of each support rod is connected with the rear sealing plate.
Be different from prior art, the technical scheme of this application is used for supporting through switch supporting mechanism isolator, switch supporting mechanism includes two at least vaulting poles and connects the strengthening rib of two at least vaulting poles, the one end of vaulting pole with preceding boxboard is connected, the other end of vaulting pole with the back shrouding is connected. So, the vaulting pole supports respectively between front box board and back shrouding, and at least two vaulting poles can form a whole through the strengthening rib, and on single vaulting pole atress transmitted all vaulting poles, improved the holding power of single vaulting pole, avoid the vaulting pole to inwards press and sink, improve the security of looped netowrk cabinet.
In one embodiment of the present invention, the stay is connected to the front box panel by a first connecting plate, one end of the stay is welded to the first connecting plate, and the first connecting plate is welded to the front box panel. Therefore, the supporting rod improves the stress area between the supporting rod and the front box plate through the first connecting plate, and the bearing capacity of the supporting rod is improved.
In one embodiment of the present invention, the first connecting plate is long, one end of the stay is welded to a middle section of the first connecting plate, and upper and lower ends of the first connecting plate are welded to the front box plate through connecting columns, respectively. Therefore, the first connecting plate is in a long strip shape, one end of the support rod is welded in the middle section of the first connecting plate, the upper end and the lower end of the first connecting plate are respectively welded on the front box plate through the connecting column, the connecting strength of the first connecting plate and the front box plate is enhanced, and the bearing capacity of the support rod is further improved.
As an embodiment of the present invention, the reinforcing rib is connected to an upper end of the first connecting plate, and the reinforcing rib is welded to the front box plate through at least two connecting posts. So, can improve the joint strength between strengthening rib and the preceding boxboard through two at least spliced poles.
As an embodiment of the present invention, one ends of at least two stay bars are connected to each other by a reinforcing rib, and the other ends of at least two stay bars are connected to each other by a mounting reinforcing plate. Therefore, all the support rods can form a frame through the reinforcing ribs and the installation reinforcing plates, and the stress degree of the single support rod is further improved.
As an embodiment of the present invention, the other end of the stay is connected to the mounting reinforcing plate through a second connecting plate, the other end of the stay is welded to the second connecting plate, and the second connecting plate is welded to the mounting reinforcing plate. So, the other end of vaulting pole passes through the second connecting plate, improves the joint strength between vaulting pole and the installation reinforcing plate.
As an embodiment of the present invention, the box body further includes a left box board and a right box board, and two ends of the installation reinforcing plate are respectively connected to the left box board and the right box board through positioning plates. So, the installation reinforcing plate can make gravity disperse to left boxboard, right boxboard through the locating plate respectively with left boxboard, right boxboard, improves the support intensity of installation reinforcing plate.
As an embodiment of the invention, the isolating switch comprises an isolating switch bracket rear wall plate, and the top end of the isolating switch bracket rear wall plate is connected with the installation reinforcing plate. So, isolator support back wall board is hung on the installation reinforcing plate, and isolator support back wall board weight is born by the installation reinforcing plate, can make isolator support back wall board's atress more even.
As an embodiment of the invention, the isolating switch further comprises a front wall plate of the isolating switch bracket, the reinforcing rib is located on the outer side of the front box plate, the front wall plate of the isolating switch bracket is connected with the front box plate, the reinforcing rib is welded on the front box plate, and the reinforcing rib is arranged opposite to the top of the front wall plate of the isolating switch bracket. So, the wallboard is connected with the strengthening rib before the isolator support through preceding boxboard, makes the gravity of wallboard before the isolator support bear by wallboard before the isolator support, can make the atress of wallboard before the isolator support more even.
In order to achieve the above object, the inventor further provides a ring main unit, including any one of the ring main unit air boxes provided by the inventor.
Be different from prior art, the technical scheme's of this application looped netowrk cabinet, the vaulting pole supports respectively between front box board and back shrouding, and two at least vaulting poles can form a whole through the strengthening rib, and single vaulting pole atress transmits all vaulting poles on, improves the holding power of single vaulting pole, avoids the vaulting pole to inwards sink, improves looped netowrk cabinet's security.
The above description of the present invention is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clearly understood by those skilled in the art, the present invention may be further implemented according to the content described in the text and drawings of the present application, and in order to make the above objects, other objects, features, and advantages of the present application more easily understood, the following description is made in conjunction with the detailed description of the present application and the drawings.
Drawings
The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of particular embodiments of the present application, as well as others related thereto, and are not to be construed as limiting the application.
In the drawings of the specification:
fig. 1 is a three-dimensional structural view of a ring main unit air box according to an embodiment of the present application;
fig. 2 is a schematic internal view of a ring main unit air box according to an embodiment of the present application;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
fig. 4 is an internal schematic view of another angle of the ring main unit air box according to an embodiment of the present application;
FIG. 5 is an enlarged schematic view at B in FIG. 4;
FIG. 6 is a schematic diagram of an embodiment of a disconnector and switch support mechanism according to the present application;
fig. 7 is a schematic structural diagram of another angle of the disconnector and switch support mechanism according to an embodiment of the present application.
The reference numerals referred to in the above figures are explained below:
11. the front box plate is arranged on the front box plate,
12. a rear sealing plate is arranged on the back side of the frame,
13. the left box plate is arranged on the left box plate,
2. the isolation switch is connected with the power supply and the power supply,
21. a rear wall plate of the isolating switch bracket,
22. a front wall board of the isolating switch bracket,
31. the support rod is arranged on the support rod,
32. the reinforcing ribs are arranged on the outer wall of the shell,
33. a first connecting plate which is connected with the first connecting plate,
34. a connecting column is arranged at the bottom of the groove,
35. the installation of the reinforcing plate is carried out,
36. a second connecting plate is arranged on the first connecting plate,
37. a positioning plate is arranged on the base plate,
4. an operating mechanism of the circuit breaker is provided,
5. three station mechanisms.
Detailed Description
In order to explain in detail possible application scenarios, technical principles, practical embodiments, and the like of the present application, the following detailed description is given with reference to the accompanying drawings in conjunction with the listed embodiments. The embodiments described herein are merely for more clearly illustrating the technical solutions of the present application, and therefore, the embodiments are only used as examples, and the scope of the present application is not limited thereby.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or related to other embodiments specifically defined. In principle, in the present application, the technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution as long as there is no technical contradiction or conflict.
Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the use of relational terms herein is intended only to describe particular embodiments and is not intended to limit the present application.
In the description of the present application, the term "and/or" is a expression for describing a logical relationship between objects, meaning that three relationships may exist, for example a and/or B, meaning: there are three cases of A, B, and both A and B. In addition, the character "/" herein generally indicates that the former and latter associated objects are in a logical relationship of "or".
In this application, terms such as "first" and "second" are 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.
Without further limitation, in this application, the use of "including," "comprising," "having," or other similar expressions in phrases and expressions of "including," "comprising," or "having," is intended to cover a non-exclusive inclusion, and such expressions do not exclude the presence of additional elements in a process, method, or article that includes the recited elements, such that a process, method, or article that includes a list of elements may include not only those elements but also other elements not expressly listed or inherent to such process, method, or article.
As is understood in the examination of the guidelines, the terms "greater than", "less than", "more than" and the like in this application are to be understood as excluding the number; the expressions "above", "below", "within" and the like are understood to include the present numbers. In addition, in the description of the embodiments of the present application, "a plurality" means two or more (including two), and expressions related to "a plurality" similar thereto are also understood, for example, "a plurality of groups", "a plurality of times", and the like, unless specifically defined otherwise.
In the description of the embodiments of the present application, spatially relative expressions such as "central," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used, and the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the specific embodiments or drawings and are only for convenience of describing the specific embodiments of the present application or for the convenience of the reader, and do not indicate or imply that the device or component in question must have a specific position, a specific orientation, or be constructed or operated in a specific orientation and therefore should not be construed as limiting the embodiments of the present application.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and "disposed" used in the description of the embodiments of the present application are to be construed broadly. For example, the connection can be a fixed connection, a detachable connection, or an integrated arrangement; it can be a mechanical connection, an electrical connection, or a communication connection; they may be directly connected or indirectly connected through an intermediate; which may be communication within two elements or an interaction of two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains in accordance with specific situations.
The inventor finds that in the prior art, the stay bar is used for supporting the isolating switch, but in the using process, the isolating switch needs to be frequently operated due to the fact that the weight of the isolating switch is too heavy, the stay bar is easily collapsed towards the inner pressure, and the whole ring main unit is caused to be invalid.
Therefore, the embodiment of the present application provides a technical solution, please refer to fig. 1 to 7, and the embodiment relates to a ring main unit air box, including a box body, an isolating switch 2 and a switch supporting mechanism, where the box body includes a front box plate 11 and a rear sealing plate 12, the isolating switch 2 is disposed in the box body, the switch supporting mechanism is used for supporting the isolating switch 2, the switch supporting mechanism includes at least two supporting rods 31 and a reinforcing rib 32 connected to the at least two supporting rods 31, one end of each supporting rod 31 is connected to the front box plate 11, and the other end of each supporting rod 31 is connected to the rear sealing plate 12.
In this embodiment, the isolating switch 2 includes an isolating fixed contact and an isolating movable contact, and the isolating fixed contact and the isolating movable contact are switched on and off with each other, so as to isolate the current.
In this embodiment, the switch support mechanism is used for supporting the disconnecting switch 2, and the switch support mechanism includes at least two support rods 31 and a reinforcing rib 32 connected to the at least two support rods 31, one end of each support rod 31 is connected to the front box plate 11, and the other end of each support rod 31 is connected to the rear closing plate 12. So, vaulting pole 31 supports respectively between preceding boxboard 11 and back shrouding 12, and at least two vaulting poles 31 can form a whole through strengthening rib 32, and single vaulting pole 31 atress improves single vaulting pole 31's holding power on transmitting all vaulting poles 31, avoids vaulting pole 31 inwards to cave in, improves looped netowrk cabinet's security.
In some embodiments, as shown in fig. 2 and 3, the stay 31 is connected to the front box panel 11 by a first connecting plate 33, one end of the stay 31 is welded to the first connecting plate 33, and the first connecting plate 33 is welded to the front box panel 11. In this way, the first connecting plate 33 of the stay 31 increases the force-receiving area between the stay 31 and the front box plate 11, thereby increasing the force-receiving capacity of the stay 31.
In some embodiments, the first connecting plate 33 is long, one end of the strut 31 is welded to the middle section of the first connecting plate 33, and the upper and lower ends of the first connecting plate 33 are respectively welded to the front box plate 11 through the connecting column 34. Therefore, the first connecting plate 33 is long, one end of the stay bar 31 is welded in the middle section of the first connecting plate 33, the upper end and the lower end of the first connecting plate 33 are respectively welded on the front box plate 11 through the connecting column 34, the connecting strength between the first connecting plate 33 and the front box plate 11 is enhanced, and the bearing capacity of the stay bar 31 is further improved.
In some embodiments, the disconnecting switch 2 further comprises a disconnecting switch bracket front wall plate 22, a reinforcing rib 32 is located on the outer side of the front box plate 11, the disconnecting switch bracket front wall plate 22 is connected with the front box plate 11, the reinforcing rib 32 is welded on the front box plate 11, and the reinforcing rib 32 is arranged opposite to the top of the disconnecting switch bracket front wall plate 22. So, isolator support front wall panel 22 is connected with strengthening rib 32 through preceding boxboard 11, makes isolator support front wall panel 22's gravity bear by isolator support front wall panel 22, can make isolator support front wall panel 22's atress more even.
In some embodiments, as shown in fig. 4 to 7, one ends of at least two stays 31 are connected to each other by a reinforcing rib 32, and the other ends of at least two stays 31 are connected to each other by a mounting reinforcing plate 35. In this way, all the struts 31 can form a frame through the reinforcing ribs 32 and the mounting reinforcing plates 35, and the stress degree of the single strut 31 is further improved.
In some embodiments, the other end of the strut 31 is connected to the mounting reinforcement plate 35 through a second connecting plate 36, the other end of the strut 31 is welded to the second connecting plate 36, and the second connecting plate 36 is welded to the mounting reinforcement plate 35. In this way, the other end of the stay 31 passes through the second connecting plate 36, and the connection strength between the stay 31 and the mounting reinforcement plate 35 is improved.
In some embodiments, the box further comprises a left box plate 13 and a right box plate, and two ends of the mounting reinforcing plate 35 are connected to the left box plate 13 and the right box plate respectively through positioning plates 37. Thus, the installation reinforcing plate 35 can be respectively separated from the left box plate 13 and the right box plate by the positioning plate 37, so that the gravity is dispersed on the left box plate 13 and the right box plate, and the supporting strength of the installation reinforcing plate 35 is improved.
In some embodiments, as shown in fig. 6, the disconnector 2 comprises a disconnector housing back wall panel 21, the top end of which disconnector housing back wall panel 21 is connected to a mounting reinforcement panel 35. So, isolator support back wall board 21 is hung on installation reinforcing plate 35, and isolator support back wall board 21 weight is born by installation reinforcing plate 35, can make isolator support back wall board 21's atress more even.
In some embodiments, as shown in fig. 7, a reinforcing bar 32 is coupled to the upper end of the first coupling plate 33, and the reinforcing bar 32 is welded to the front box plate 11 by at least two coupling posts 34. In this way, the strength of the connection between the reinforcing beads 32 and the front box plate 11 can be improved by at least two connecting columns 34.
The embodiment also relates to a ring main unit which comprises a ring main unit air box, a circuit breaker operating mechanism 4 and a three-station mechanism 5, wherein the three-station mechanism 5 is used for rotating three movable disconnecting switches 2 of the disconnecting switches 2, and the circuit breaker operating mechanism 4 is used for controlling the vacuum switches to move downwards and upwards. The circuit breaker operating mechanism 4 and the three-position mechanism 5 are conventional technical means, and will not be described in a repeated manner.
Vacuum circuit breakers mainly comprise three major parts: vacuum interrupter, electromagnetism or spring operating mechanism, support and other parts. The working principle of the vacuum circuit breaker is as follows: when the moving contact and the static contact are switched off under the action of the operating mechanism, electric arcs are generated between the contacts, steam is volatilized from the surfaces of the contacts at high temperature, a magnetic field is generated when current passes through the contacts due to the special shape of the contacts, the electric arcs rapidly move along the tangential direction of the surfaces of the contacts under the action of the magnetic field, partial metal steam is condensed on the metal cylinder (shielding cover), the electric arcs are extinguished when the electric arcs naturally pass through zero, and the medium strength between the contacts is rapidly recovered.
Different from the prior art, in the ring main unit of this embodiment, the brace rods 31 are respectively supported between the front box plate 11 and the rear closing plate 12, at least two brace rods 31 may form a whole through the reinforcing rib 32, and the stress of a single brace rod 31 is transmitted to all the brace rods 31, so as to improve the supporting force of the single brace rod 31, prevent the brace rod 31 from collapsing inward, and improve the safety of the ring main unit.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present patent.
Claims (10)
1. A ring main unit gas tank is characterized by comprising
The box body comprises a front box plate and a rear sealing plate;
the isolating switch is arranged in the box body; and
the switch supporting mechanism is used for supporting the isolating switch and comprises at least two support rods and a reinforcing rib connected with the at least two support rods, one end of each support rod is connected with the front box plate, and the other end of each support rod is connected with the rear sealing plate.
2. The ring main unit gas box as claimed in claim 1, wherein the stay bar is connected to the front box plate by a first connecting plate, one end of the stay bar is welded to the first connecting plate, and the first connecting plate is welded to the front box plate.
3. The ring main unit gas box according to claim 2, wherein the first connecting plate is an elongated bar, one end of the supporting rod is welded to a middle section of the first connecting plate, and upper and lower ends of the first connecting plate are respectively welded to the front box plate through connecting columns.
4. The ring main unit air box of claim 3, wherein the reinforcing rib is connected to the upper end of the first connecting plate, and the reinforcing rib is welded to the front box plate through at least two connecting columns.
5. The ring main unit air box according to any one of claims 1 to 4, wherein one ends of at least two stay bars are connected to each other by a reinforcing rib, and the other ends of at least two stay bars are connected to each other by a mounting reinforcing plate.
6. The ring main unit gas box according to claim 5, wherein the other end of the stay bar is connected to the mounting reinforcing plate through a second connecting plate, the other end of the stay bar is welded to the second connecting plate, and the second connecting plate is welded to the mounting reinforcing plate.
7. The ring main unit air box of claim 5, wherein the box body further comprises a left box plate and a right box plate, and two ends of the installation reinforcing plate are respectively connected with the left box plate and the right box plate through positioning plates.
8. The ring main unit air box of claim 5, wherein the isolation switch comprises an isolation switch bracket back wall plate, and the top end of the isolation switch bracket back wall plate is connected with the installation reinforcing plate.
9. The ring main unit air box of claim 8, wherein the isolation switch further comprises a front wall panel of the isolation switch bracket, the stiffener is located at an outer side of the front wall panel, the front wall panel of the isolation switch bracket is connected with the front wall panel, the stiffener is welded on the front wall panel, and the stiffener is arranged opposite to a top of the front wall panel of the isolation switch bracket.
10. A ring main unit, comprising: the ring main unit air box of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111647023.8A CN114362000A (en) | 2021-12-30 | 2021-12-30 | Ring main unit air box and ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111647023.8A CN114362000A (en) | 2021-12-30 | 2021-12-30 | Ring main unit air box and ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114362000A true CN114362000A (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111647023.8A Pending CN114362000A (en) | 2021-12-30 | 2021-12-30 | Ring main unit air box and ring main unit |
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| CN (1) | CN114362000A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203052952U (en) * | 2013-01-09 | 2013-07-10 | 江门市利隆五金电器实业有限公司 | Supporting frame used for installation of air-conditioning outdoor unit |
| CN207719710U (en) * | 2018-01-31 | 2018-08-10 | 南京鼎淳电气有限公司 | Air insulation ring main unit |
| CN214506121U (en) * | 2021-02-26 | 2021-10-26 | 福建中能电气有限公司 | A support and looped netowrk cabinet for looped netowrk cabinet |
| CN216872536U (en) * | 2021-12-30 | 2022-07-01 | 福建中能电气有限公司 | Ring main unit air box and ring main unit |
-
2021
- 2021-12-30 CN CN202111647023.8A patent/CN114362000A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203052952U (en) * | 2013-01-09 | 2013-07-10 | 江门市利隆五金电器实业有限公司 | Supporting frame used for installation of air-conditioning outdoor unit |
| CN207719710U (en) * | 2018-01-31 | 2018-08-10 | 南京鼎淳电气有限公司 | Air insulation ring main unit |
| CN214506121U (en) * | 2021-02-26 | 2021-10-26 | 福建中能电气有限公司 | A support and looped netowrk cabinet for looped netowrk cabinet |
| CN216872536U (en) * | 2021-12-30 | 2022-07-01 | 福建中能电气有限公司 | Ring main unit air box and ring main unit |
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