CN204497583U - The exhaust apparatus of switchgear and the medium voltage switchgear equipment of correspondence - Google Patents
The exhaust apparatus of switchgear and the medium voltage switchgear equipment of correspondence Download PDFInfo
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- CN204497583U CN204497583U CN201420826012.5U CN201420826012U CN204497583U CN 204497583 U CN204497583 U CN 204497583U CN 201420826012 U CN201420826012 U CN 201420826012U CN 204497583 U CN204497583 U CN 204497583U
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- masked segment
- exhaust apparatus
- panel wall
- switchgear
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Abstract
A kind of exhaust apparatus being used for switchgear (2), comprising: panel wall (3), it is suitable for arranging near the compartment (4) of described switchgear (2); At the upper one or more masked segments (5) arranged of described panel wall (3), described masked segment (5) is set to for closing described compartment (4) and being configured to make when being short-circuited or occur electric arc the corresponding exhaust outlet (6) in described panel wall (3) open wide, discharge to make the gas produced in compartment (4), described masked segment (5) and described panel wall (3) are all obtained, to limit unitary members by single flat piece of shape body (7).
Description
Technical field
The utility model relates to a kind of exhaust apparatus for switchgear, the discharge of the burning gases produced when there is electric arc especially for switchgear inside.This exhaust apparatus is particularly suitable for being applied to medium voltage switchgear equipment, and wherein this term refers to the magnitude of voltage had between 1kV to tens kV, such as 52kV, application.
Background technology
It is known that in medium voltage switchgear equipment, particularly in compartment---wherein contain many devices, as movable contact, cable, bus, electric switch etc., the such as fault such as current overload, short circuit may be there is, these faults produce electric arc, produce unexpected superpressure phenomenon subsequently, set off an explosion even phenomenon sometimes.The burning gases caused by electric arc cause internal pressure to increase suddenly, and it must be discharged from switchgear by the perforate of appropriate size and position usually immediately, the potential region that perforate may be close away from operating personnel.
In order to make gas discharge compartment, have employed various solution at present.The first solution comprises the wire netting using and be applied to the side of the compartment of switchgear.In order to promote that gas is discharged to outside further, a tendency is the size of the mesh of the wire netting increased.But the wire netting with wide mesh effectively can not stop and protect dust or less desirable foreign body enters compartment interior, and these dusts and less desirable foreign body enter the operation that compartment may jeopardize switchgear.
Another solution comprises the exhaust wallboard using and be made up of the metallic plate arranging two or more windows.Such window is sealed by metallic plate band or shielding part, and described metallic plate band or shielding part have rectangle or foursquare shape, is namely well known also referred to as term " bulla " with jargon.This shielding part or bulla are made up of metallic plate, and it is thinner than the thickness of wallboard sheet.When phenomenon of blasting, the thrust that this shielding part is obtained from overvoltage by them is separated from wallboard, and exposes the window of below, makes gas discharging to outside.Each shielding part or bulla are fixed on wallboard in corresponding exhaust ports by suitable metal or continuously connected fastener or suitable Connection Element, these suitable metals or continuously connected fastener or suitable Connection Element must have well-chosen mechanical damage resistance, to reach certain safety requirements.In other words, suitably rupture when the overvoltage that the retaining element of these nails or equivalence must be caused at the electric arc caused from fault or the electric arc triggered by accident by operating personnel under some particular task in some cases occurs.The fracture of this nail makes shielding part or bulla can depart from from metallic walls, thus opens relative exhaust window.Each shielding part has the scope larger than the exhaust outlet of below, can shelve along the neighboring district of opening, and can fix with above-mentioned nail or Connection Element.
Although the exhaustion plate of above disclosed type performs the function of protection and exhaust well, it is desirable to realize a kind of structure simply, more fast and more cheap solution, be namely extremely reliably simultaneously and strict safety requirements can be met.
It also will be solution easily, can guarantee that burning gases are rapidly to outside outflow, but simultaneously can than the internal components of above-mentioned disclosed wire netting exhaust apparatus more effectively and more accurately protection switch equipment.
Utility model content
The purpose of this utility model is to provide a solution, and it can meet these demands, and realizes larger effect and ease for use.
By a kind of exhaust apparatus for switchgear, this becomes possibility, and this exhaust apparatus comprises:
Panel wall, it is suitable for arranging near the compartment of described switchgear,
At least one masked segment that described panel wall is arranged, described masked segment is set to for closing described compartment and being configured to make when being short-circuited or occur electric arc the corresponding exhaust outlet in described panel wall open wide, discharge to make the gas produced in compartment
It is characterized in that, at least one masked segment described and described panel wall are all obtained, to limit unitary members by single flat piece of shape body.
Due in the utility model, provide such exhaust apparatus, its structure simplifies significantly relative to the bulla device of prior art, and does not need to use more retaining element separately, such as, follow closely, keep shielding part or bulla to be anchored on closed position.
Masked segment and panel wall energy on a metallic plate by shear simply or die-cut or laser cutting or water jet cutting or other suitable processing operation directly obtain.Therefore, in order to obtain processing operation according to exhaust apparatus of the present utility model thus reduce and significantly simplify.In addition, due to the specific structural allocation of exhaust apparatus, can utilize the material of use better, as metallic plate, the amount of waste material significantly reduces.
Accompanying drawing explanation
The feature and advantage of this exhaust apparatus by by claims and by following with the mode of non-limiting example illustrate the explanation of its embodiment and accompanying drawing more clear, wherein:
Fig. 1 shows on it and installs according to the casing frame of the switchgear of exhaust apparatus of the present utility model;
Fig. 2 and Fig. 3 is perspective view according to the first embodiment of exhaust apparatus of the present utility model and front view respectively, comprises a panel wall, panel wall is provided with four masked segments;
Fig. 4 is a partial view, and masked segment is wherein high-visible;
Fig. 5 to Fig. 7 is the details of the different amplification of Fig. 4, shows the separated region between the masked segment of this device and panel wall peripheral region and connecting bridge region;
Fig. 8 shows the second embodiment of exhaust apparatus, it has two adjacent masked segments, wherein, in order to understand operation better, masked segment is shown as the normal position of the normal running be in corresponding to described switchgear, and another masked segment can by the structure used after being shown as the overvoltage being in and being applied by the burning gases of electric arc;
Shown in Fig. 9 and Figure 10 is the details in the connecting bridge region of having ruptured after there is electric arc.
Embodiment
With reference to accompanying drawing, it illustrates two embodiments of the exhaust apparatus 1 for switchgear 2.The burning gases that the impact by short circuit or electric arc of compartment 4 inside of switchgear 2 can produce by exhaust apparatus 1 are discharged, and contain electrical contact, conductive cable, electric switchgear such as circuit breaker, switch and various miscellaneous part in compartment 4.This exhaust apparatus 1---as below better disclosed in---the unexpected overvoltage preventing these gas from producing can destroy or affect opposite side to make the gas produced when short circuit or electric arc can discharge---directly discharging towards desired region---fast and effectively, and this opposite side is expect to maintain safety on the other hand---the region that the region such as occupied by other sensitive devices or operating personnel may often can go.
In the following description and the drawings, relate to such mounting structure, wherein, this exhaust apparatus 1 is installed to the rear side of switchgear 2, therefore, away from potentially in the face of switchgear 2 exist operating personnel.Especially, in a possible configuration, provide two different embodiments of exhaust apparatus 1, they plan the upper area and the lower area that are arranged on switchgear 2 respectively.But according to application-specific needs, device 1 can be configured to the not homonymy or the zones of different that are applied to switchgear 2.
In FIG, illustrate only the external frame of switchgear 2, and the various electric elements insides of switchgear 2 are removed, to make exhaust apparatus 1 more obvious.
Exhaust apparatus 1 comprises the panel wall 3 of the rear side of the compartment 4 being applied to switchgear 2.In the embodiment illustrated better in figs 2 and 3, exhaust apparatus 1 comprises the adjacent masked segment 5 of two couple be arranged in panel wall 3, and in the embodiment in fig. 8, and exhaust apparatus 1 comprises highly lower panel wall 3 and only a pair masked segment 5.Especially, each masked segment 5 has rectangular shape.But, the quantity of the height of panel wall 3 and masked segment 5 and width and masked segment 5, geometry, position and mutual arrangement can from display and describe different, and to select according to the requirement of application-specific and needs.
In each embodiment of exhaust apparatus 1, masked segment 5 and panel wall 3 is whole is obtained by single parts, is namely obtained by single flat piece of shape body 7, to limit single unitary members.In other words, masked segment 5 and panel wall 3 are one mutually, are obtained by unitary members.This exhaust apparatus 1 is therefore different from the device of prior art, and the device of prior art is then to provide independent bulla, and described bulla is fixed on wall by unique with independent nail or Connection Element.
Especially, flat piece of shape body 7 comprises metallic plate, as cold rolling and zinc-plated steel plate.Particularly, the mechanical resistance Rm of the material of selection is at about 270N/mm
2about 500N/mm
2between.
But it is also possible for obtaining exhaust apparatus 1 from the flat piece of shape bulk material being different from steel, as long as it is suitable for special-purpose disclosed herein.
Flat piece of shape body 7 arranges separated region 8, it limits the border of each masked segment 5 and it is separated to the corresponding peripheral region 9 in panel wall 3, also be provided with connecting bridge region 10,10A, 10B, each masked segment 5 is connected to corresponding peripheral region 9 by connecting bridge region 10,10A, 10B.
On flat piece of shape body 7, separated region 8 and connecting bridge region 10,10A, 10B is obtained by shearing manipulation.But, by other technology, if the acquisition separated region 8 such as laser or water jet cutting and connecting bridge region 10,10A, 10B are also possible.Substantially, the exhaust apparatus 1 metallic plate or flat piece obtained simply by shearing manipulation or other equivalent operation has uniform thickness in each area and has two complete smooth opposite faces.In other words, the peripheral region 9 of masked segment 5 and panel wall 3 has identical thickness, and is positioned at same plane.This exhaust apparatus 1---mode with non-limiting example---has the thickness equaling 2mm.
Under the normal operating condition of switchgear 2, masked segment 5 is arranged to enclosed compartment 4.Masked segment 5 is constructed to: set off an explosion due to such as short circuit or electric arc in compartment or overvoltage, the corresponding exhaust outlet 6 that described masked segment 5 makes to be arranged in panel wall 3 opens wide, thus enables the gas of compartment 4 be discharged to outside.Once gas has been discharged the interior compartment 4 of switchgear 2, they can flow to outside by suitable pipeline and exhaust uptake.
Separated region 8 and connecting bridge region 10,10A, 10B are configured to limit the pre-geosutures 11 arranged around each masked segment 5.Pre-geosutures 11 like this make each masked segment 5 can in a selective way (namely only at the peripheral edge portion of masked segment 5) be separated from corresponding peripheral region 9 and leave.In other words, exhaust apparatus 1 is configured to: in the case of arcing, and this masked segment 5 rotates around the transverse edge of self substantially, instead of departs from from panel wall 3 completely.Especially, described connecting bridge region 10 comprises: the fracture bridge region 10A of just fracture when being configured to overvoltage occurs in compartment 4; And flexible bridges region 10B, flexible bridges region 10B are set to for making each masked segment 5 move, but be not exclusively separated from panel wall 3.
When blasting, this advantageously prevents masked segment 5 towards adjacent domain by ejection and collision or also away from switchgear 2.Fig. 9 and Figure 10 schematically shows damaged fracture bridge region 10A.Can notice in the drawings, masked segment 5 rotates by exploding, and the exhaust outlet 6 in panel wall 3 is opened wide with Exhaust Gas.Advantageously, from use be easy to be separated from switchgear when blasting event independent retaining element such as follow closely or the gas extraction system of Connection Element different, according in exhaust apparatus 1 of the present utility model, two remainders of each fracture bridge region 10A keep being anchored well in masked segment 5 and wall 3 after explosive incident, and can not damage the parts around switchgear 2.
Or rather, fracture bridge region 10A is disposed in the first outer circumferential side 12 of each masked segment 5, and flexible bridges region 10B distributes along the second outer circumferential side 12 relative with aforementioned first side 12.Flexible bridges region 10B can make masked segment 5 be rotated around the second outer circumferential side 13 by the impact of overvoltage, opens wide the corresponding exhaust outlet 6 for gas.In order to only obtain breaking effect on bridge region 10A is particularly ruptured in the bridge region 10 determined under overpressure situation, and on the other hand along other bridge regions 10 particularly flexible bridges region 10B realize " hinge " effect, select one or more suitable parameter value.Particularly, can suitably select, to obtain above-mentioned breaking effect and " hinge " effect at desired zone around the suitable quantity in the bridge region 10 of each masked segment 5 and suitable distribution, flexible bridges region 10B and the fracture thickness of bridge region 10A and/or the area of cross section.
In the embodiment shown in the figures, by the mode of non-limiting example, each masked segment 5 is connected to panel wall 3, and side has three fracture bridge region 10A, and has four flexible bridges region 10B on the opposite sides.Fracture bridge region 10A and flexible bridges region 10B distributes equably in corresponding both sides.Fracture bridge region 10A has the cross section less than the cross section of flexible bridges region 10B.Particularly, flexible bridges region 10B has the width S 1 (being parallel to the plane survey of metallic plate) equaling 1.5mm, thus rectangular cross section is determined as 1.5 × 2mm.
Fracture bridge region 10A has little of negligible mechanical resistance, and only to have during switchgear 2 normal running and particularly between erecting stage by function that masked segment 5 is held in place.Especially, fracture bridge region 10A has the width S 2 (being parallel to the plane survey of metallic plate) equaling 1mm accordingly, thus rectangular cross section is determined as 1 × 2mm.
But consider the type of the material for exhaust apparatus 1, also relate to the quantity in the bridge region that expectation limits in a device, flexible bridges region 10B and fracture bridge region 10A can have the cross section of the shape and size being different from above-mentioned disclosed embodiment.
In an illustrated embodiment, the often pair of masked segment 5 is arranged in the mode of relative to each other specular, and namely the fracture bridge region 10A of often pair of masked segment is arranged close to each other, and flexible bridges region 10B be placed on each other the most away from both sides.By this way, in the event of excess pressure, two masked segments 5 adjacent one another are rotate in reciprocal corresponding direction of rotation 14 and 15.
From content that is open and that illustrate, be clear that to say it is the solution simplified very much from the angle of structure according to exhaust apparatus 1 of the present utility model, but be effectively and reliably simultaneously, and most importantly implement simple economy.Exhaust apparatus 1 does not need to use independent retaining element, such as follow closely, or Connection Element, and directly obtained by single piece of metal sheet simply by the operation performing shearing manipulation or other equivalences further, this point is different from known panel system, wherein bulla---there is the thickness different from the remainder of panel, and there is the expanded range larger than each opening to be capped---can not obtain from same metallic plate, but obtain from another different lamellar material.Therefore be advantageously also related to remarkable minimizing and the simplification of the processing born needed for exhaust apparatus 1, and therefore achieve the more good utilisation of material requested such as metallic plate, the amount of waste material appreciably reduces, and produces the corresponding saving of cost.
For disclosed in above-mentioned accompanying drawing and the content explained, further distortion and/or to add be possible, and construct exhaust apparatus 1 according to the function of the application-specific of expection in the mode expected and determine that the size of exhaust apparatus 1 is also possible.Finally, the material for the manufacture of exhaust apparatus 1 can be selected as required, as long as it is suitable for the special-purpose of expecting.
Claims (14)
1., for an exhaust apparatus for switchgear (2), comprising:
Panel wall (3), it is suitable for arranging near the compartment (4) of described switchgear (2),
At upper at least one masked segment (5) arranged of described panel wall (3), described masked segment (5) is set to for closing described compartment (4) and being configured to make when being short-circuited or occur electric arc the corresponding exhaust outlet (6) in described panel wall (3) open wide, discharge to make the gas produced in compartment (4)
It is characterized in that, described at least one masked segment (5) and described panel wall (3) are all obtained, to limit unitary members by single flat piece of shape body (7).
2. exhaust apparatus according to claim 1, it is characterized in that, described flat piece of shape body (7) is provided with separated region (8), and described separated region limits the border of each masked segment (5) and is separated with the corresponding peripheral region (9) in described panel wall (3) by each masked segment; Described flat piece of shape body (7) arranges connecting bridge region (10 further, 10A, 10B), described connecting bridge region (10,10A, 10B) each masked segment (5) is connected to corresponding peripheral region (9).
3. exhaust apparatus according to claim 2, is characterized in that, described at least one masked segment (5) and described panel wall (3) have identical uniform thickness, and coplanar.
4. exhaust apparatus according to claim 2, it is characterized in that, described separated region (8) and described connecting bridge region (10,10A, 10B) constructed around each masked segment (5) and arranged, to be defined for the pre-geosutures (11) of described masked segment (5), described pre-geosutures (11) can make each masked segment (5) only be separated at the outer peripheral edge portion place of masked segment (5) from corresponding peripheral region (9) and remove in a selectable manner.
5. exhaust apparatus according to claim 2, it is characterized in that, described connecting bridge region (10) comprises fracture bridge region (10A) and flexible bridges region (10B), described fracture bridge region (10A) is arranged on first outer circumferential side (12) of each masked segment (5) and is configured to by the inner overvoltage effect of compartment (4) and ruptures, described flexible bridges region (10B) is arranged to described masked segment (5) can be rotated around the second outer circumferential side (13) by described overvoltage effect, and do not depart from from described panel wall (3), thus the exhaust outlet (6) being used in gas opens wide.
6. exhaust apparatus according to claim 5, is characterized in that, is provided with the described fracture bridge region (10A) of varying number relative to described flexible bridges region (10B).
7. exhaust apparatus according to claim 5, is characterized in that, described fracture bridge region (10A) has the cross section less than the cross section of described flexible bridges region (10B).
8. exhaust apparatus according to claim 5, it is characterized in that, described flexible bridges region (10B) is selected as making to impel each masked segment (5) to be only separated with described panel wall (3) at described fracture bridge region (10A) place when overvoltage occurs described compartment (4) with cross section with the quantity of described fracture bridge region (10A), and using described flexible bridges region (10B) as the mode of hinge, described masked segment (5) can be rotated relative to described panel wall (3).
9. exhaust apparatus according to claim 5, it is characterized in that, for each masked segment (5), its first side is provided with three fracture bridge regions (10A), and on second side relative with described first side, is provided with four flexible bridges regions (10B).
10. exhaust apparatus according to claim 2, it is characterized in that, described separated region (8), described connecting bridge region (10,10A, 10B) and at least one masked segment described (5) by shear or clicking technique or Laser cutting or water jet cutting processing technique in the upper directly acquisition of described flat piece of shape body (7).
11. exhaust apparatus according to claim 1, is characterized in that, described flat piece of shape body (7) comprises metallic plate.
12. exhaust apparatus according to claim 1, is characterized in that, described flat piece of shape body (7) comprises cold rolling and zinc-plated steel plate.
13. exhaust apparatus according to claim 1, it is characterized in that, at least one pair of masked segment (5) is set to arrange adjacent to each other in the mode of specular, and be constructed to rotate according to reciprocal direction of rotation (14,15) when overvoltage occurs in compartment (4) inside.
14. 1 kinds of medium voltage switchgear equipments, comprise one or more according to exhaust apparatus in any one of the preceding claims wherein (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMO20130030 ITMO20130030U1 (en) | 2013-10-02 | 2013-10-02 | DEVICE FOR GAS VENTILATION FOR AN ELECTRIC PANEL |
| ITMO2013U000030 | 2013-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204497583U true CN204497583U (en) | 2015-07-22 |
Family
ID=50683352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420826012.5U Active CN204497583U (en) | 2013-10-02 | 2014-10-08 | The exhaust apparatus of switchgear and the medium voltage switchgear equipment of correspondence |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204497583U (en) |
| IT (1) | ITMO20130030U1 (en) |
-
2013
- 2013-10-02 IT ITMO20130030 patent/ITMO20130030U1/en unknown
-
2014
- 2014-10-08 CN CN201420826012.5U patent/CN204497583U/en active Active
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| Publication number | Publication date |
|---|---|
| ITMO20130030U1 (en) | 2015-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180525 Address after: Baden, Switzerland Patentee after: ABB TECHNOLOGY LTD. Address before: Zurich Patentee before: ABB Transmit OY |
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| TR01 | Transfer of patent right |