CN102436981B - Breaker - Google Patents
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- CN102436981B CN102436981B CN201110305664.5A CN201110305664A CN102436981B CN 102436981 B CN102436981 B CN 102436981B CN 201110305664 A CN201110305664 A CN 201110305664A CN 102436981 B CN102436981 B CN 102436981B
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- temperature
- connecting portion
- temperature sensor
- circuit breaker
- contact
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Abstract
The invention discloses a breaker. The breaker comprises a shell, a contact system, an arc extinguish chamber, an operation mechanism and a temperature detection device, wherein the contact system, the arc extinguish chamber and the operation mechanism are arranged on the shell; the shell comprises a bottom plate and a pedestal; the contact system comprises a static contact and a moving contact, and the static contact is arranged on the bottom plate; the temperature detection device comprises a temperature detection module and a temperature sensor; the temperature sensor is used for collecting temperature signals, and transmitting the temperature signals to the temperature detection module; a cavity is formed between the static contact and the bottom plate; and the temperature sensor is positioned in the cavity. Compared with the prior art, the temperature sensor of the breaker disclosed by the invention is arranged in the cavity between the static contact and the bottom plate, the temperature of the static contact can be directly measured by virtue of the temperature sensor, the real-time temperature of the contact point of the static and moving contacts can be truly reflected, and the measurement accuracy is high.
Description
Technical field
The present invention relates to a kind of circuit breaker, specifically a kind of its inside is provided with the circuit breaker of temperature sensor.
Background technology
As Fig. 1, circuit breaker comprises housing 2, contact system 3, and arc control device 4, operating mechanism 5, described housing 2 holds contact system 3 and arc control device 4, and operating mechanism 5 is with movable contact system 3 to carry out a deciliter action, and arc control device 4 are for extinguishing the electric arc producing when circuit breaker is worked; Described housing 2 comprises pedestal 22 and base plate 21; The cavity of described base plate 21 and pedestal 22 mix proportion relative closures; Contact system 3 comprises fixed contact 31 and moving contact 32.Loaded current under contact closure state, due to the existence of galvanic circle resistance, each conductive component temperature raises.Facts have proved, temperature peak is at dynamic and static contact place, because dynamic and static contact place has higher contact resistance.Excess Temperature can cause the high annealing of metalwork, thereby reduce its mechanical strength, and the at high temperature oxidation rate of contact metal part aggravation, contact resistance is further strengthened, thereby cause vicious circle, the too high aging and insulation property that also can cause insulating material of simultaneous temperature reduce, and affect the long-time security performance using of electrical equipment.Therefore the temperature monitoring to switching device inside, especially extremely important to the temperature monitoring at contact place in switching device, user finds the excess Temperature of switching device early, is its prerequisite of taking in time counter-measure.
Prior art Patent 200810210850 has been described a kind of air circuit with temperature sensor, realizes the monitoring to circuit breaker internal temperature by patchhole temperature sensor being inserted in body base.As Fig. 2, the temperature-detecting device of circuit breaker comprises temperature sensor 150, overheated detection module 220, overheated notification module 230, Temperature Setting module 210.Temperature sensor 150, for the temperature sampling to circuit breaker heat generating components; Overheated notification module 230, for the temperature signal of temperature sensor 150 is carried out to analyzing and processing, and to overheated notification module 230 output signals; Overheated notification module 230, shows by the digital display on it for overheated detection module 220 is conducted to the signal of coming; Temperature Setting module 210, for overheated detection module 220 is controlled, makes the analysis processing result of described overheated detection module 220 meet user's requirement.Common above-mentioned overheated detection module 220, overheated notification module 230, Temperature Setting module 210 is integrated into an integral module and is positioned at circuit breaker outside, and is fixed on the panel of switch cubicle, convenient operation person operation and observation.
As Fig. 3, the temperature sensor schematic diagram of prior art, temperature sensor 150 is insinuated in the pedestal of contact system top, and its one end is also connected with connecting portion 156, and described connecting portion 156 leans out circuit breaker base.Temperature sensor 150 is electrically connected with overheated detection module 220 by connecting portion 156.
This thermometric mode is because temperature sensor is larger from the air line distance at dynamic and static contact place, and the parts at interval are more, and the contact temperature error of measuring is larger.And in some severe situations, can not reflect the actual temperature of contact to the measurement of switching device internal temperature.In the time there is large electric current or short circuit, the temperature of switching device contact rises rapidly, at short notice because radiating rate is limited, causes switching device internal temperature (as near temperature pedestal, mechanism) and the temperature of contact in fact to have larger gap; On the other hand, because existing contact mostly is silver-base alloy, divide and have no progeny through disjunction repeatedly or large electric current at switching device, silver in contact evaporates in a large number, cause the contact resistance of contact constantly to increase, the corresponding increase of caloric value, heating concentrates on dynamic and static contact place, now can not directly reflect the true temperature of contact to the measurement of circuit breaker internal temperature.In these cases, even reflect contact temperature by the mode that switching device internal temperature is increased to offset (considering the factors such as environment, material, life-span), due to complexity and the irregularities of situation, the error between the value that this mode draws and real contact temperature is also very large.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, and the more close dynamic and static contact of a kind of temperature sensor place is provided, thereby improves the circuit breaker of accuracy in detection.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of circuit breaker, comprises housing, contact system, arc control device, operating mechanism and temperature-detecting device; Described contact system, arc control device and operating mechanism is arranged on described housing, and described housing comprises base plate and pedestal, and described contact system comprises fixed contact and moving contact, and described fixed contact is arranged on described base plate; Described temperature-detecting device comprises temperature detecting module and temperature sensor; Temperature sensor is used for collecting temperature signal, and temperature signal is passed to temperature detecting module, it is characterized in that: between described fixed contact and base plate, be provided with a cavity, described temperature sensor is positioned at described cavity.
Described cavity is arranged in described base plate.
Described cavity is arranged in described fixed contact.
Described temperature sensor is connected with temperature detecting module by connecting portion, and described connecting portion comprises the first connecting portion, the second connecting portion and the 3rd connecting portion; Described pedestal coordinates with base plate; Described base plate is provided with the cable clamping interface of settling the first connecting portion; The second described connecting portion is electrically connected with the first connecting portion through pedestal, and the second connecting portion other end is connected with twice connector on circuit breaker, and the 3rd described connecting portion connects twice connector and temperature detecting module.
Described temperature sensor is connected with temperature detecting module by connecting portion, and described connecting portion comprises the first connecting portion, the second connecting portion; Described pedestal coordinates with base plate; Described base plate is provided with the cable clamping interface of settling the first connecting portion; The second described connecting portion is electrically connected with the first connecting portion through pedestal, and the second connecting portion other end is connected with temperature detecting module, and temperature detecting module is positioned at the controller inside of circuit breaker.
Described circuit breaker also comprises with described base plate and coordinates the cover plate for the temperature sensor of screening, and described cover plate is U-shaped.
Described temperature detecting module comprises: signal processing module, for the signal of temperature sensor is carried out to analyzing and processing; Temperature Setting module, sets for the parameter to signal processing module; Display module, shows for the output signal to signal processing module.
Signal processing module comprises communication interface.
Compared with prior art, the temperature sensor of circuit breaker of the present invention is arranged in the cavity between fixed contact and base plate, can directly measure by this temperature sensor the temperature of fixed contact, can react really the real time temperature of dynamic/static contact contact point, accuracy of measurement is high.
Brief description of the drawings
Fig. 1 prior art breaker structure figure.
The temperature-detecting device module diagram of Fig. 2 prior art.
The schematic diagram of the temperature sensor of the temperature-detecting device of Fig. 3 prior art.
Fig. 4 circuit breaker schematic diagram of the present invention.
Fig. 5 circuit breaker exploded perspective view of the present invention.
Fig. 6 line switch board schematic diagram of the present invention.
Fig. 7 line switch board of the present invention side plane diagram.
Fig. 8 temperature sensor partial schematic diagram of the present invention.
Fig. 9 circuit breaker base schematic diagram of the present invention.
Figure 10 temperature-detecting device circuit module of the present invention schematic diagram.
The temperature sensor partial schematic diagram of another mode of Figure 11 the present invention.
The temperature sensor partial schematic diagram of another mode of Figure 12 the present invention.
The inner integrated temperature detection module of Figure 13 circuit breaker of the present invention schematic diagram.
Embodiment
As Fig. 4,5,6,9, circuit breaker comprises housing 2, contact system 3, arc control device 4, operating mechanism 5, twice connectors 6; Described housing 2 holds contact system 3 and arc control device 4, and operating mechanism 5 is with movable contact system 3 to carry out a deciliter action, and arc control device 4 are for extinguishing the electric arc producing when circuit breaker is worked; Described housing 2 comprises pedestal 22 and base plate 21; The cavity of described base plate 21 and pedestal 22 mix proportion relative closures, this relative enclosed cavity is called breaker arc extinguishing chamber, and the mating cavity 213 of concrete base plate 21 is corresponding with the boss 221 on pedestal 22, and base plate 21 and pedestal 22 are closely cooperated; Contact system 3 comprises fixed contact 31 and moving contact (not shown); Twice connector 6 is for being communicated with circuit breaker outside and internal circuit.
As Fig. 7,8,10,11,12, this temperature-detecting device, comprises temperature detecting module 11 and temperature sensor 12; Temperature sensor 12 is for collecting temperature signal, and temperature signal is passed to temperature detecting module 11, in the cavity of described temperature sensor 12 between fixed contact 31 and base plate 21.
As Fig. 7, shown in 8, temperature sensor 12 is positioned at the cavity of the base plate 21 contacting with circuit breaker static contact 31, and is positioned at fixed contact 31 1 sides.
As Fig. 4,5,6 temperature-detecting devices are divided into three groups, detect respectively three contact systems of circuit breaker.If circuit breaker is four groups of contact systems, can adopt four groups of temperature-detecting devices.Temperature sensor 12 is other temperature monitoring elements such as thermocouple element or temperature-sensitive electricity group, temperature sensor 12 entirety are positioned at fixed contact 31 1 sides, temperature sensor 12 is positioned at the cable clamping interface 211 on base plate 21, described cable clamping interface 211 is L shaped, its horizontal part holds temperature sensor 12, and vertical portion holds the first connecting portion 1221, described horizontal part is the straight-line groove of an end opening, thereby in the time that temperature sensor 12 is arranged in this horizontal part, it is positioned at the blind end of this horizontal part, be positioned at the side that fixed contact 31 hits exactly, for moving contact (not shown) is carried out to temperature sampling, and temperature data is conducted in temperature detecting module 11 Treatment Analysis.
Outside temperature sensor 12, be provided with cover plate 212, cover plate 212 is working of plastics, and it can fixed temperature sensor 12, prevents from coming off, and meanwhile, can realize temperature sensor 12 and insulate mutually with fixed contact 31.
First connecting portion 1221 one end are connected with temperature sensor 12, first connecting portion 1221 other ends are connected with second connecting portion 1222 one end through pedestal 22, second connecting portion 1222 other ends connect twice connector 6, twice connector 6 and connect the 3rd connecting portion 1223 one end.
The first connecting portion 1221 coordinates for pegging graft with the second connecting portion 1222 junctions, and one end is plug, and one end is socket, and for example the first connecting portion 1221 is socket, and the second connecting portion 1222 is plug.
As Fig. 4, the 3rd connecting portion 1223 other ends connect external temperature detection module 11, and signal is analyzed, and process.
As Figure 13, as another kind of mode, second connecting portion 1222 other ends connect temperature detecting module 11, and temperature detecting module 11 is positioned at intelligent controller 7 inside that circuit breaker carries, integrated with intelligent controller.
As Figure 10, described temperature detecting module 11 comprises: signal processing module 111, carries out analyzing and processing for the signal of temperature sensor; Temperature Setting module 112, for setting the parameter of signal processing module 111; Display module 113, for showing the output signal of signal processing module 111.
As Figure 10, temperature sensor 12 gathers the temperature of the first side of stationary contact, the thermoelectric potential of himself changes, this kind of thermoelectric potential is transferred to signal processing module 111 as voltage signal, first signal processing module 111 carries out rectification, filtering and voltage stabilizing processing to above-mentioned voltage signal, and produces a processing signals to be analyzed; Signal processing module 111 is again to above-mentioned processing signals to be analyzed, and the parameter setting according to Temperature Setting module 112 is carried out threshold values and relatively processed; Finally export threshold values compare result signal to display module 113; Display module 113 shows above-mentioned result display thereon, thereby feeds back to observer or circuit breaker direct action.
Described signal processing module 111 generally includes a MCU micro-control unit, as signal processor.And display module 113 is provided with display.
Described signal processing module 111 can be provided with communication interface, and this communication interface can be used for communication module, for example: bluetooth module, short message module.
As Figure 11, it is the mounting means of the temperature sensor of another mode.On the basis of foregoing invention, cover plate 212 is adjusted into three faces and encircles structure, cover plate 212 surrounds temperature sensor 12 surrounding insulation with base plate 21, protection temperature sensor 12.
This improvement has further improved the insulation protection of temperature sensor 12, avoids the impact of circuit breaker loaded current, improves the life-span of device for detecting temperature.
As Figure 12, it is the mounting means of the temperature sensor of another mode.On the basis of basic scheme of the present invention, will on fixed contact 31, offer cavity, temperature sensor 12 is positioned at this cavity, and cover plate 212 surrounds temperature sensor 12 with base plate 21.This kind of scheme, makes temperature sensor 12 be positioned at fixed contact 31 inside, and it more can accurately reflect the temperature of fixed contact 31.
Be positioned at cable clamping interface 211, the second connecting portions 1222 that the first connecting portion 1221 of Shell of circuit breaker 2 inside is positioned on base plate 21 and run through pedestal 22, be conducive to protect connecting portion itself.
Claims (6)
1. a circuit breaker, comprises housing (2), contact system (3), arc control device (4), operating mechanism (5) and temperature-detecting device; Described contact system (3), arc control device (4) and operating mechanism (5) is arranged on described housing (2), described housing (2) comprises base plate (21) and pedestal (22), described contact system (3) comprises fixed contact (31) and moving contact, and described fixed contact (31) is arranged on described base plate (21); Described temperature-detecting device comprises temperature detecting module (11) and temperature sensor (12); Temperature sensor (12) is for collecting temperature signal, and temperature signal is passed to temperature detecting module (11), it is characterized in that: between described fixed contact (31) and base plate (21), be provided with a cavity, described temperature sensor (12) is positioned at described cavity, described cavity is arranged in described fixed contact (31), described circuit breaker also comprises the cover plate (212) that coordinates temperature sensor (12) that are used for screening with described base plate (21), and described cover plate 212 surrounds temperature sensor (12) with base plate 21.
2. circuit breaker according to claim 1, it is characterized in that: described temperature sensor (12) is connected with temperature detecting module (11) by connecting portion (122), and described connecting portion (122) comprises the first connecting portion (1221), the second connecting portion (1222) and the 3rd connecting portion (1223); Described pedestal (22) coordinates with base plate (21); Described base plate (21) is provided with the cable clamping interface (211) of settling the first connecting portion (1221); Described the second connecting portion (1222) is electrically connected with the first connecting portion (1221) through pedestal (22), the second connecting portion (1222) other end is connected with twice connector (6) on circuit breaker, and the 3rd described connecting portion (1223) connects twice connector (6) and temperature detecting module (11).
3. circuit breaker according to claim 1, it is characterized in that: described temperature sensor (12) is connected with temperature detecting module (11) by connecting portion (122), and described connecting portion (122) comprises the first connecting portion (1221), the second connecting portion (1222); Described pedestal (22) coordinates with base plate (21); Described base plate (21) is provided with the cable clamping interface (211) of settling the first connecting portion (1221); Described the second connecting portion (1222) is electrically connected with the first connecting portion (1221) through pedestal (22), the second connecting portion (1222) other end is connected with temperature detecting module (11), and temperature detecting module (11) is positioned at controller (7) inside of circuit breaker.
4. circuit breaker according to claim 1, is characterized in that: described cover plate (212) is for U-shaped.
5. circuit breaker according to claim 1, is characterized in that: described temperature detecting module (11) comprising: signal processing module (111), for the signal of temperature sensor is carried out to analyzing and processing; Temperature Setting module (112), for setting the parameter of signal processing module (111); Display module (113), for showing the output signal of signal processing module (111).
6. circuit breaker according to claim 5, is characterized in that: signal processing module (111) comprises communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110305664.5A CN102436981B (en) | 2011-10-11 | 2011-10-11 | Breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110305664.5A CN102436981B (en) | 2011-10-11 | 2011-10-11 | Breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102436981A CN102436981A (en) | 2012-05-02 |
| CN102436981B true CN102436981B (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110305664.5A Active CN102436981B (en) | 2011-10-11 | 2011-10-11 | Breaker |
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| Country | Link |
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| CN (1) | CN102436981B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3054717B1 (en) * | 2016-07-29 | 2018-09-07 | Hager Electro Sas | ELECTRONIC TRIGGER FOR ELECTRIC LINE PROTECTION APPARATUS |
| CN110211847A (en) * | 2019-07-03 | 2019-09-06 | 南京飞腾电子科技有限公司 | A kind of breaker of plastic casing with self-checking function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101211722A (en) * | 2006-12-29 | 2008-07-02 | Ls产电株式会社 | Protection apparatus for air circuit breaker |
| CN101373684A (en) * | 2007-08-20 | 2009-02-25 | Ls产电株式会社 | Air circuit breaker with temperature sensor |
| CN102034642A (en) * | 2010-12-29 | 2011-04-27 | 常州森源力拓开关有限公司 | Intelligent vacuum circuit breaker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100902684B1 (en) * | 2008-10-27 | 2009-06-15 | 주식회사 대륙 | The electrical device with sensor for temperature |
| CN201811807U (en) * | 2010-10-21 | 2011-04-27 | 南京新宁光电工程有限公司 | Online temperature measuring system of smart isolation switch |
-
2011
- 2011-10-11 CN CN201110305664.5A patent/CN102436981B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101211722A (en) * | 2006-12-29 | 2008-07-02 | Ls产电株式会社 | Protection apparatus for air circuit breaker |
| CN101373684A (en) * | 2007-08-20 | 2009-02-25 | Ls产电株式会社 | Air circuit breaker with temperature sensor |
| CN102034642A (en) * | 2010-12-29 | 2011-04-27 | 常州森源力拓开关有限公司 | Intelligent vacuum circuit breaker |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2010-103116A 2010.05.06 * |
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| Publication number | Publication date |
|---|---|
| CN102436981A (en) | 2012-05-02 |
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