CN203644593U - Switch apparatus contact device - Google Patents
Switch apparatus contact device Download PDFInfo
- Publication number
- CN203644593U CN203644593U CN201320870791.4U CN201320870791U CN203644593U CN 203644593 U CN203644593 U CN 203644593U CN 201320870791 U CN201320870791 U CN 201320870791U CN 203644593 U CN203644593 U CN 203644593U
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- China
- Prior art keywords
- guide rod
- contact
- arc
- arc extinguishing
- shaped guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000003068 static effect Effects 0.000 claims abstract description 43
- 238000012546 transfer Methods 0.000 claims abstract description 18
- 238000002955 isolation Methods 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 6
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000000712 assembly Effects 0.000 abstract description 4
- 238000000429 assembly Methods 0.000 abstract description 4
- 230000000630 rising effect Effects 0.000 abstract 2
- 238000010891 electric arc Methods 0.000 description 33
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 230000009194 climbing Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000002679 ablation Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a switch apparatus contact device and belongs to the technical field of low voltage electrical apparatuses. The switch apparatus contact device comprises static contact assemblies, movable contact assemblies and arc extinguishing gate piece assemblies, wherein a moving contact is fixed on each movable contact assembly; each static contact assembly comprises a U-shaped guide rod and a static contact; an arc transfer channel region is arranged between each arc extinguishing gate piece assembly and each moving contact; and the U-shaped guide rod is provided with a U-shaped guide rod cavity. The switch apparatus contact device is characterized in that the U-shaped guide rod cavity is internally provided with a magnet vane; the magnet vane extends towards the direction of the arc extinguishing gate piece assembly from the region corresponding to the moving contact and the static contact and extends at least to the region of the foot end part of the arc extinguishing gate piece, facing one side of the movable contact assembly, of the arc extinguishing gate piece assembly. Arc can be fully and timely cut, the rising rate of the arc voltage can be effectively improved, the phenomenon that arc roots stop for a long time on the contacts to cause the contacts to be excessively ablated to reduce the electrical service life can be avoided, the rising rate of the arc voltage is obviously improved, arc voltage peak keeping is facilitated, the current limiting performances are enhanced, and successful breaking can be ensured.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, is specifically related to a kind of contact apparatus of device for switching.
Background technology
The contact apparatus of device for switching generally includes a pedestal, on pedestal, form and have pedestal chamber, pedestal chamber can be one, also can be not only parallel but also that mutually separate a plurality of, in pedestal chamber, in pluggable mode, electrode group is set, electrode group comprise fixed contact (also claiming fixed contact), match with fixed contact and corresponding to movable bridge-shaped contact (also claiming moving contact) and the arc extinguishing grid pieces assembly of fixed contact below.
The contact apparatus of said structure form can be seen in " starter double-break contact device " that notification number CN1157746C recommends, this patent scheme has overcome the tripper of CN1034616C(circuit breaker) shortcoming, have its Instructions Page 2 the 15th to 18 row record technique effect.
The version of the contact apparatus of the device for switching in the prior art including above mentioned two patents is: between the region at the place, dynamic and static contact of dynamic and static contact and the region at arc extinguishing grid pieces group place, have certain distance, in break-make normal circuit or while cut-offfing faulty circuit, the electric arc producing when dynamic and static contact is scolded out each other enters arc extinguishing grid pieces group through this certain distance, by arc extinguishing grid pieces group, electric arc cutting is realized to arc extinguishing.But, because region automatic, fixed contact place is longer to the distance between the region at arc extinguishing grid pieces place, thereby electric arc is driven, produce between fixed contact until arrive arc extinguishing grid pieces assembly and conventionally have a tediously long arc transfer process, industry custom is called arc transfer passage area by this arc transfer process with quantification manner.According to electromagnetic principle, the guide rod support arm that the contact guide rod (fixed contact guide rod) that shape is generally U-shaped does not arrange fixed contact can produce and hinder the electric power that electric arc is advanced to arc extinguishing grid pieces assembly direction, slow down the speed that electric arc shifts to arc extinguishing grid pieces assembly from fixed contact, even hinder electric arc and enter arc extinguishing grid pieces assembly, thereby cause electric arc fully not cut by arc extinguishing grid pieces assembly in time and reduce the climbing of arc voltage, the following unfavorable factor of final initiation: the one, cause electric arc arc root to increase in the time of staying at contact place, cause the excessive ablation in contact and affect electrical endurance, the 2nd, the prolongation (also can claim that transfer velocity is slow) because of the arc transfer time while cut-offfing fault current reduces current limiting performance, causes that arcing energy increases suddenly, exists disjunction unsuccessfully to jeopardize the anxiety of safety.
In view of above-mentioned prior art, be necessary rational modification in addition, the applicant has done useful design for this reason, and has formed technical scheme described below.
Summary of the invention
Task of the present utility model is to provide a kind of electric arc that is conducive to shift to arc extinguishing grid pieces assembly region fast and use and avoid reducing electrical endurance and be conducive to promote current limiting performance because of pitting of contacts the contact apparatus of using the device for switching of guaranteeing the reliable effect of cut-offfing fault current from fixed contact.
Task of the present utility model completes like this, a kind of contact apparatus of device for switching, comprise static contact component, the moving contact component matching with static contact component and arc extinguishing grid pieces assembly, on described moving contact component, be fixed with moving contact, described static contact component comprise U-shaped guide rod be fixed on U-shaped guide rod and the position fixed contact corresponding with moving contact, between between arc extinguishing grid pieces assembly and moving contact, be separated with an arc transfer passage area, wherein: described U-shaped guide rod forms a U-shaped guide rod chamber, it is characterized in that: in described U-shaped guide rod chamber, be provided with magnetic isolation plate, this magnetic isolation plate from the described moving contact region corresponding with fixed contact the direction towards described arc extinguishing grid pieces assembly extend and at least extend to the region of arc extinguishing grid pieces assembly towards the arc extinguishing grid pieces leg end of a side of moving contact component.
U-shaped guide rod described in the utility model includes one first guide rod support arm and one second guide rod support arm, the second guide rod support arm forms towards one end of described fixed contact bending at the first guide rod support arm, and corresponding to the below of the first guide rod support arm, space between first, second guide rod support arm is configured to described U-shaped guide rod chamber, and described fixed contact is fixed on the side of the second guide rod support arm towards described moving contact.
Magnetic isolation plate described in the utility model is pure iron, mild steel or ferro-silicium.
The technical scheme that the utility model provides is owing to being provided with magnetic isolation plate in the U-shaped guide rod chamber of U-shaped guide rod, and magnetic isolation plate is driven, the corresponding region of fixed contact extends to the region of the arc extinguishing grid pieces leg end of arc extinguishing grid pieces assembly to the direction of arc extinguishing grid pieces assembly, the arc transfer passage area being incorporated between arc extinguishing grid pieces assembly at the driven fixed contact of electric arc all can play good magnetic screening effect, being conducive to electric arc shifts from fixed contact, and be beneficial to electric arc and enter fast arc extinguishing grid pieces assembly, arc energy is fully cut in time and effectively promote the climbing of arc voltage, avoid causing that because of electric arc arc root long-time stop on contact the excessive ablation in contact reduces electrical endurance.And, cut-offfing in fault current process because arc energy fast transfer is to arc extinguishing grid pieces assembly and fully cut, thereby can significantly promote the climbing of arc voltage, be beneficial to the maintenance of electric arc arc voltage peak value, promote current limiting performance, guarantee to cut-off successfully.
Accompanying drawing explanation
Fig. 1 is that the contact apparatus of the utility model device for switching is applied to the schematic diagram of controlling with protective device.
Fig. 2 is the stereochemical structure exploded view of the electrode assemblie shown in Fig. 1.
Fig. 3 is that the fixed contact strutting piece shown in Fig. 2 coordinates schematic diagram with static contact component and magnetic isolation plate.
Fig. 4 is electric arc formation stages contact apparatus schematic diagram.
Fig. 5 is electric arc contact apparatus schematic diagram while being about to enter arc extinguishing grid pieces assembly.
Embodiment
Refer to Fig. 2 and Fig. 4, provide static contact component 4, the moving contact component 3 coordinating with static contact component 4 and arc extinguishing grid pieces assembly 11, on moving contact component 3, be fixed with moving contact 31, static contact component 4 comprises U-shaped guide rod 40 and is fixed on the fixed contact 41 on the second guide rod support arm 403 of the side towards moving contact 31 of U-shaped guide rod 40.The technical essential of the technical scheme providing as the utility model: the bending inside at U-shaped guide rod 40 is provided with magnetic isolation plate 10, this magnetic isolation plate 10 starts to extend and at least extend to arc extinguishing grid pieces assembly 11 directions 110 regions, arc extinguishing grid pieces leg end of arc extinguishing grid pieces assembly 11 from the contact region at moving contact 31 and fixed contact 41 places.As shown in Figure 4, aforementioned U-shaped guide rod 40 is made up of the first guide rod support arm 401 and the second guide rod support arm 403 in fact, the second guide rod support arm 403 forms towards one end of fixed contact 41 bending at the first guide rod support arm 401, and corresponding to the below of the first guide rod support arm 401, first, the second guide rod support arm 401, space between 403 is configured to U-shaped guide rod chamber 404, this U-shaped guide rod chamber 404 is the bending inside of aforesaid U-shaped guide rod 40, aforesaid fixed contact 41 is fixed on the side of the second guide rod support arm 403 towards moving contact 31, and aforesaid magnetic isolation plate 10 is placed in U-shaped guide rod chamber 404.
Refer to Fig. 1 to Fig. 5, wherein, Fig. 1 and Fig. 4 and Fig. 5 have represented that the contact apparatus of the utility model device for switching is applied to the embodiment in control and protective device, this control and protective device, comprise pedestal 1 and be arranged at least one electrode assemblie 2 in the pedestal chamber 15 on pedestal 1, each electrode assemblie 2 comprises two static contact components 4, 5, with static contact component 4, the 5 movable bridge-shaped contacts that match, movable bridge-shaped contact is connected and composed by the moving contact component 3 described in two, one compresses the compression spring 13 of movable bridge-shaped contact, the run-on tab 6 of a bottom that is placed in pedestal chamber 15 and point be located at the arc extinguishing grid pieces assembly 11 at 15 two ends, pedestal chamber, aforesaid two static contact components 4, 5 fixed contact 41, 51 are arranged at the two second guide rod support arms 403 towards movable bridge-shaped contact one side, on 503, at two static contact components 4, 5 bendings are inner and in two fixed contacts 41, 51 behind region division has magnetic isolation plate 10, magnetic isolation plate 10 extends and at least extends to the region at 110 places, arc extinguishing grid pieces leg end of arc extinguishing grid pieces assembly 11 to the direction of arc extinguishing grid pieces assembly 11.Aforesaid compression spring 13 is placed on run-on tab 6, and between run-on tab 6, is also provided with a cross-over block 14, and cross-over block 14 shows by the boss 141(Fig. 5 on it) match with the hole of offering on run-on tab 6.Between two described static contact components 4,5 and magnetic isolation plate 10, be provided with for insulating and two fixed contact strutting pieces 8,9(Fig. 2 of supporting role show).Aforesaid magnetic isolation plate 10 is pure iron or mild steel or ferro-silicium (silicon steel sheet).
As aforementioned, U-shaped guide rod 40 comprises the first guide rod support arm 401 and the second guide rod support arm 403, and the bottom in aforesaid U-shaped guide rod chamber 404 is U-shaped bottom 402, and fixed contact 41 is arranged at the second guide rod support arm 403 and is close to the region of U-shaped bottom 402.The U-shaped guide rod 50 that is equivalent to U-shaped guide rod 40 comprises i.e. the first guide rod support arm 501 of two guide rod support arm 501() and i.e. the second guide rod support arm 503 of 503() and U-shaped bottom 502, fixed contact 51 is arranged at the region that is close to U-shaped bottom 502 on guide rod support arm 503.Guide rod 30 is arranged in the support 32 between static contact component 4 and static contact component 5, and guide rod 30 both sides are respectively arranged with moving contact 31, and moving contact 31 matches with the fixed contact 41,51 of two static contact components 4,5 and forms main circuit loop.
Two groups of arc extinguishing grid pieces assemblies 11 are the both sides that dynamic and static contact 31,41 and dynamic and static contact 31,51 lay respectively at support 32 corresponding to counterpart contact combination, and are set up in respectively between two second guide rod support arms 403,503 and run-on tab 6.Especially, between dynamic and static contact 31,41 combinations of arc extinguishing grid pieces assembly 11 and pairing and dynamic and static contact 31,51 combinations of pairing, there is the arc space of race, be arc transfer passage area, the level interval between arc extinguishing grid pieces assembly 11 as shown in Figure 4,5 and counterpart contact combination.
Fixed contact strutting piece 8 is for the relative position between fixing magnetic isolation plate 10, static contact component 4 and pedestal 1, in like manner, fixed contact strutting piece 9 is for the relative position between fixing magnetic isolation plate 10, static contact component 5 and pedestal 1, specifically: as Fig. 3, fixed contact strutting piece 8 has groove 81, support edge 83 and locating part 82, magnetic isolation plate 10 is placed in groove 81, locating part 82 is for joining with the both sides hook of the second guide rod support arm 403, support edge 83 with on pedestal 1 for matching every the dividing plate that sets out the pedestal chamber 15 identical with electrode assemblie 2 quantity.
The position that is positioned at arc transfer passage area of run-on tab 6 is bent with magnetic conductive board 61(Fig. 2 and shows), magnetic conductive board 61 is arranged on insulation aerogenesis plate 7, further strengthens the movement velocity of electric arc.
As shown in Figure 4, while cut-offfing circuit, between the dynamic and static contact 31,41 of pairing, produce electric arc, between the dynamic and static contact 31,51 of pairing, produce electric arc.The flow direction of electric current I as shown in Figure 4, A1-A2-B1-E1-F1-C1-D1-D2.According to electromagnetism principle, in the first guide rod support arm 401, for the electric arc C1F1 section generation obstruction between dynamic and static contact 31,41 combinations of pairing, it is transferred to the electric power f of arc extinguishing grid pieces assembly 11 to electric current I diagram D1D2 section, and in the second guide rod support arm 403, electric current I produces and promotes it to be transferred to the electric power F of arc extinguishing grid pieces assembly 11 for the electric arc C1F1 section between the combination of the dynamic and static contact 31,41 of pairing.In like manner, for the electric arc B1E1 section generation obstruction between the dynamic and static contact 31,51 of combinations of pairs, it is transferred to the electric power f of arc extinguishing grid pieces assembly 11 to electric current A1A2 section in the first guide rod support arm 501, and the electric current in the second guide rod support arm 503 produces and promotes it to be transferred to the electric power F of arc extinguishing grid pieces assembly 11 for the electric arc B1E1 section between the dynamic and static contact 31,51 of combinations of pairs.Clearly, the electric current in two first guide rod support arms 401 and 501 produces inhibition for arc transfer.Therefore, the existence of magnetic isolation plate 10, can shield the unfavorable dynamo-electric effect that in two first guide rod support arms 401 and 501, electric current produces to a great extent.And, owing to thering is arc transfer passage area level interval as shown in Figure 4,5 between the dynamic and static contact 31,41 of matching and dynamic and static contact 31,51 and arc extinguishing grid pieces assembly 11, from better screen effect, magnetic isolation plate 10 preferably should extend and at least should extend to the arc extinguishing grid pieces leg end 110 of arc extinguishing grid pieces assembly 11 from the region, behind of two fixed contacts 41,51 to arc extinguishing grid pieces assembly 11.
Be illustrated in figure 5 electric arc circuit path afterwards from counterpart contact combination jumps to run-on tab 6: A1-A2-B1-B2-E2-F2-C2-C1-D1-D2.Thus, the transfering channel scope being incorporated into from counterpart contact between arc extinguishing grid pieces assembly 11 at electric arc can obtain good magnetic screening effect, be beneficial to the effective transfer of electric arc from fixed contact, and be beneficial to electric arc and enter fast arc extinguishing grid pieces assembly 11, arc energy is fully cut in time and effectively promote the climbing of arc voltage, effectively avoid because electric arc arc root long-time stop on contact causes that the excessive ablation in contact reduces electrical endurance, and, cut-offfing fault current process because electric arc fast transfer to arc extinguishing grid pieces is fully cut, can greatly promote the climbing of arc voltage, be beneficial to the maintenance of electric arc arc voltage peak value, promoting current limiting performance guarantees successfully to cut-off.
Contact apparatus of the present utility model also can use to be had on the electric switch of a static contact component 4, moving contact component 3 and arc extinguishing grid pieces assembly 11, equally, by the setting of magnetic isolation plate 10, can obtain good magnetic screening effect at electric arc from dynamic/static contact region to the arc transfer passage area between arc extinguishing grid pieces group 11, be beneficial to the effective transfer of electric arc from fixed contact, and be beneficial to electric arc and enter fast arc extinguishing grid pieces group.
In addition, contact apparatus of the present utility model also can be useful in has two static contact components 4 that are symmetrically set, on the electric switch of two moving contact components that match with static contact component 4 respectively, two rotatably setting or translation settings as described in above-described embodiment of moving contact component.
Claims (3)
1. the contact apparatus of a device for switching, comprise static contact component (4), the moving contact component (3) matching with static contact component (4) and arc extinguishing grid pieces assembly (11), on described moving contact component (3), be fixed with moving contact (31), described static contact component (4) comprises U-shaped guide rod (40) and is fixed on fixed contact (41) on U-shaped guide rod (40) and that position is corresponding with moving contact (31), between between arc extinguishing grid pieces assembly (11) and moving contact (31), be separated with an arc transfer passage area, wherein: described U-shaped guide rod (40) forms a U-shaped guide rod chamber (404), it is characterized in that: in described U-shaped guide rod chamber (404), be provided with magnetic isolation plate (10), this magnetic isolation plate (10) from described moving contact (31) region corresponding with fixed contact (41) direction towards described arc extinguishing grid pieces assembly (11) extend and at least extend to the region of arc extinguishing grid pieces assembly (11) towards the arc extinguishing grid pieces leg end (110) of a side of moving contact component (3).
2. the contact apparatus of device for switching according to claim 1, it is characterized in that described U-shaped guide rod (40) includes one first guide rod support arm (401) and one second guide rod support arm (403), the second guide rod support arm (403) forms towards one end of described fixed contact (41) bending at the first guide rod support arm (401), and corresponding to the below of the first guide rod support arm (401), first, the second guide rod support arm (401, 403) space between is configured to described U-shaped guide rod chamber (404), described fixed contact (41) is fixed on the side of the second guide rod support arm (403) towards described moving contact (31).
3. the contact apparatus of device for switching according to claim 1, is characterized in that described magnetic isolation plate (10) is pure iron, mild steel or ferro-silicium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320870791.4U CN203644593U (en) | 2013-12-27 | 2013-12-27 | Switch apparatus contact device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320870791.4U CN203644593U (en) | 2013-12-27 | 2013-12-27 | Switch apparatus contact device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203644593U true CN203644593U (en) | 2014-06-11 |
Family
ID=50875819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320870791.4U Expired - Lifetime CN203644593U (en) | 2013-12-27 | 2013-12-27 | Switch apparatus contact device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203644593U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105719865A (en) * | 2016-04-29 | 2016-06-29 | 浙江英洛华新能源科技有限公司 | Opposite arcs isolation apparatus of high voltage direct current relay |
| CN107818896A (en) * | 2016-09-12 | 2018-03-20 | 浙江正泰电器股份有限公司 | The arc extinguishing structure of breaker |
| WO2022041324A1 (en) * | 2020-08-27 | 2022-03-03 | 乐清市通达有线电厂 | Protective switch of pressure cooker lid |
-
2013
- 2013-12-27 CN CN201320870791.4U patent/CN203644593U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105719865A (en) * | 2016-04-29 | 2016-06-29 | 浙江英洛华新能源科技有限公司 | Opposite arcs isolation apparatus of high voltage direct current relay |
| CN107170604A (en) * | 2016-04-29 | 2017-09-15 | 浙江英洛华新能源科技有限公司 | The opposite arc shielding apparatus of HVDC relay |
| CN107818896A (en) * | 2016-09-12 | 2018-03-20 | 浙江正泰电器股份有限公司 | The arc extinguishing structure of breaker |
| WO2022041324A1 (en) * | 2020-08-27 | 2022-03-03 | 乐清市通达有线电厂 | Protective switch of pressure cooker lid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
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| CX01 | Expiry of patent term |