CN201829426U - Circuit breaker body with heat dissipation effect through convection - Google Patents
Circuit breaker body with heat dissipation effect through convection Download PDFInfo
- Publication number
- CN201829426U CN201829426U CN 201020555884 CN201020555884U CN201829426U CN 201829426 U CN201829426 U CN 201829426U CN 201020555884 CN201020555884 CN 201020555884 CN 201020555884 U CN201020555884 U CN 201020555884U CN 201829426 U CN201829426 U CN 201829426U
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- insulation shell
- circuit breaker
- convection
- breaker body
- fixed contact
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Abstract
The utility model relates to a circuit breaker body with heat dissipation effect through convection, comprising an insulation shell, an arc extinguishing chamber, a fixed contact, a movable contact and a mutual inductor, wherein the insulation shell mainly comprises a base and a bottom plate, the arc extinguishing chamber is arranged at the upper part of the insulation shell, the fixed contact is arranged inside the insulation shell, the movable contact is arranged inside the insulation shell and can be separated from the fixed contact or contacted with the fixed contact, and the mutual inductor is arranged at the lower part of the insulation shell. The circuit breaker body is characterized in that: an air inlet communicated with the outside is arranged at the position of the insulation shell, where the mutual inductor is arranged; and an air outlet connected with the inner cavity of the insulation shell is arranged on the insulation shell, so as to enable the inner cavity of the insulation shell and the outside to form convection. In the utility model, temperature rise of a circuit breaker can be effectively reduced and heat stability of the circuit breaker can be enhanced.
Description
Technical field
The utility model relates to a kind of breaker body, belongs to the electric switch field.
Background technology
Circuit breaker is a kind of device for switching that is applied to be used in the distribution network distributing electric energy and protection circuit and power-supply device, rely on moving, the connection of fixed contact/minute come and to realize combined floodgate/separating brake.When closing a floodgate, heat can have a resistance because of the internal resistance of circuit breaker itself.Use instrument transformer in the present circuit breaker, it mainly works to provide signal and the control power supply is provided in circuit breaker, this instrument transformer mainly is made up of air core coil and iron-core coil, and wherein iron core generates heat because of electromagnetic induction, and its iron-core coil is because of the internal resistance generation resistance heat of itself.For the design of circuit breaker, need to consider heating and the balance of dispelling the heat, guarantee that temperature rise is no more than national normal value.Under the situation of, the consistent installation environment unanimity of internal structure certain in rated current, the heating of circuit breaker is certain.And the heat radiation of circuit breaker is also relevant with its radiating mode except outside the Pass, circuit breaker internal capacity long-pending with cross-sectional area of conductor have.
The heat radiation of circuit breaker at present mainly is the heat loss through radiation by the heat loss through conduction of conductor and arc control device part.Because of the security consideration of using from the circuit breaker product, almost do not have the mode of using heat loss through convection at present, and convection type is beneficial to heat radiation very much.Therefore how to guarantee under the safe situation that using heat loss through convection is the problem that need solve.
Figure 1 shows that the cooling system of DW450 omnipotent breaker in the existing known technology.Among the figure: 1 pedestal, 2 base plates, 3 arc control device, 4 fixed contacts, 5 moving contacts, 6 instrument transformers.Shown in arrow among the figure, its heat radiation mainly is the heat loss through conduction by conducting system, and the heat loss through radiation of arc control device part is realized.Instrument transformer part in easily heating is not done radiating treatment.
The utility model content
In view of above-mentioned, the purpose of this utility model provides a kind of breaker body, in the radiating mode of breaker body, increased heat loss through convection, this mode is added on around the iron core and iron-core coil of the easy heating of instrument transformer, can effectively reduce the temperature rise of instrument transformer, reduce the temperature rise of whole circuit breaker simultaneously, can improve the circuit breaker thermal stability, and simple in structure, can effectively dwindle the circuit breaker volume.
The utility model is achieved through the following technical solutions:
A kind of breaker body of tool heat loss through convection effect comprises: insulation shell, mainly form by pedestal, base plate; Arc control device are installed in insulation shell top; Fixed contact is installed in insulation shell inside; Moving contact is installed in insulation shell inside, can or separate with the fixed contact contact; Instrument transformer is installed in the insulation shell bottom, and wherein: the position that instrument transformer is installed on the described insulation shell has and the extraneous air inlet that communicates; The air outlet that links to each other with the insulation shell inner chamber is arranged on the described insulation shell, make insulation shell inner chamber and extraneous formation convection current.
Further:
Described air inlet is positioned at the bottom of insulation shell.
Described air outlet is opened on the base plate of insulation shell.
The beneficial effects of the utility model are:
1. can effectively reduce the temperature rise of circuit breaker, improve the thermal stability of circuit breaker.
2. the trend that meets the circuit breaker miniaturization can effectively be dwindled the volume of circuit breaker.
Description of drawings
Fig. 1 is the known technology schematic diagram;
Fig. 2 is the utility model first example structure sketch;
Fig. 3 is the second example structure sketch of the present utility model.
Embodiment
The utility model relates to a kind of breaker body of tool heat loss through convection effect, comprising: insulation shell, mainly form by pedestal, base plate; Arc control device are installed in insulation shell top; Fixed contact is installed in insulation shell inside; Moving contact is installed in insulation shell inside, can or separate with the fixed contact contact; Instrument transformer is installed in the insulation shell bottom, and wherein: the position that instrument transformer is installed on the described insulation shell has and the extraneous air inlet that communicates; The air outlet that links to each other with the insulation shell inner chamber is arranged on the described insulation shell, make insulation shell inner chamber and extraneous formation convection current.
Describe in detail below in conjunction with accompanying drawing 2.
As shown in Figure 2, breaker body of the present utility model comprises: insulation shell, mainly form by pedestal 1, base plate 2; Arc control device 3 are installed in insulation shell top; Fixed contact 4 is installed in insulation shell inside; Moving contact 5 is installed in insulation shell inside, can or separate with fixed contact 4 contacts; Instrument transformer 6 is installed in the insulation shell bottom.
Thick-line arrow part as shown, the position that instrument transformer is installed on base plate has and the extraneous air inlet that communicates; Have the heat dissipation channel that communicates with air inlet on the installed surface of base plate and instrument transformer, this heat dissipation channel is to realize by the mode of removing baseboard material; On insulation shell, be provided with the air outlet that links to each other with heat dissipation channel.This air outlet is to realize by the mode of removing material in base plate, is that 200810118064.6 breaking and decompressing device of breaker communicates with the external world by my company's application number again, makes the inner chamber and extraneous formation convection current of insulation shell, plays the effect of heat radiation.
In other embodiment of the present utility model, following structural change can also be arranged:
As shown in Figure 3, its heat radiation form is shown in thick-line arrow among the figure, and the distressed structure that air inlet is opened on the pedestal 1 of insulation shell is considered as equivalent structure of the present utility model or example structure.
What need statement is; the foregoing description only is used for the utility model is described but not the utility model is limited; therefore; for a person skilled in the art; under the situation that does not deviate from the utility model spirit and scope, it is carried out various conspicuous changes, all should be within protection range of the present utility model.
Claims (3)
1. the breaker body of a tool heat loss through convection effect comprises:
Insulation shell mainly is made up of pedestal, base plate;
Arc control device are installed in insulation shell top;
Fixed contact is installed in insulation shell inside;
Moving contact is installed in insulation shell inside, can or separate with the fixed contact contact;
Instrument transformer is installed in the insulation shell bottom,
It is characterized in that:
The position that instrument transformer is installed on the described insulation shell has and the extraneous air inlet that communicates;
The air outlet that links to each other with the insulation shell inner chamber is arranged on the described insulation shell, make insulation shell inner chamber and extraneous formation convection current.
2. the breaker body of tool heat loss through convection effect as claimed in claim 1 is characterized in that:
Described air inlet is positioned at the bottom of insulation shell.
3. the breaker body of tool heat loss through convection effect as claimed in claim 1 is characterized in that:
Described air outlet is opened on the base plate of insulation shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020555884 CN201829426U (en) | 2010-09-30 | 2010-09-30 | Circuit breaker body with heat dissipation effect through convection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020555884 CN201829426U (en) | 2010-09-30 | 2010-09-30 | Circuit breaker body with heat dissipation effect through convection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201829426U true CN201829426U (en) | 2011-05-11 |
Family
ID=43967946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020555884 Expired - Lifetime CN201829426U (en) | 2010-09-30 | 2010-09-30 | Circuit breaker body with heat dissipation effect through convection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201829426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446662A (en) * | 2010-09-30 | 2012-05-09 | 北京人民电器厂有限公司 | Breaker body with convection radiating effect |
-
2010
- 2010-09-30 CN CN 201020555884 patent/CN201829426U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446662A (en) * | 2010-09-30 | 2012-05-09 | 北京人民电器厂有限公司 | Breaker body with convection radiating effect |
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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: 20110511 |
|
| CX01 | Expiry of patent term |