CN203250666U - Arc-extinguishing apparatus of direct-current mechanical switch - Google Patents
Arc-extinguishing apparatus of direct-current mechanical switch Download PDFInfo
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- CN203250666U CN203250666U CN 201320297413 CN201320297413U CN203250666U CN 203250666 U CN203250666 U CN 203250666U CN 201320297413 CN201320297413 CN 201320297413 CN 201320297413 U CN201320297413 U CN 201320297413U CN 203250666 U CN203250666 U CN 203250666U
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- mechanical switch
- current mechanical
- arc
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Abstract
The utility model provides an arc-extinguishing apparatus of direct-current mechanical switch. The arc-extinguishing apparatus comprises an absorption circuit and a direct-current mechanical switch. The direct-current mechanical switch is installed on a direct-current power supply circuit, and the absorption circuit is connected with two ends of the direct-current mechanical switch in parallel. The absorption circuit is connected with two ends of a conventional direct-current mechanical switch in parallel, and thus when the direct-current mechanical switch is disconnected, arc discharge is prevented and the service life of the direct-current mechanical switch is prolonged.
Description
Technical field
The utility model relates to a kind of arc-control device, is specifically related to a kind of arc-control device of direct current mechanical switch.
Background technology
DC power supply, for example storage battery is widely used in the every field of people's productive life, is used to various instruments, instrument and the power supply of lighting apparatus even load.
In the direct current supply line that DC power supply and load form, usually adopt the break-make of mechanical switch control supply line.But mechanical switch is in the process that disconnects, because the existence of electric current, switch contact often produces arc light when separating, thus the useful life of reducing mechanical switch; And, when arc light is serious, can directly burn switch contact even breaking out of fire.Therefore, in order to reduce the arc light phenomenon, improve the useful life of dc switch, in the prior art, people need to use professional dc switch, still, the specialty dc switch has the expensive and larger shortcoming of volume, thus the popularizing of inconvenient professional dc switch.
The utility model content
Defective for the prior art existence, the utility model provides a kind of arc-control device of direct current mechanical switch, absorbing circuit is parallel to the two ends of conventional direct current mechanical switch, the arcing phenomenon that can avoid the direct current mechanical switch in the disconnection process, to occur, thus useful life of direct current mechanical switch prolonged.
The technical scheme that the utility model adopts is as follows:
The utility model provides a kind of arc-control device of direct current mechanical switch, and described arc-control device comprises absorbing circuit and direct current mechanical switch; Described direct current mechanical switch is installed on the direct current supply line, and described absorbing circuit is installed in parallel the two ends of described direct current mechanical switch.
Preferably, described absorbing circuit is electric capacity.
Preferably, described absorbing circuit is the RC circuit of series connection.
Preferably, described absorbing circuit is the RCD circuit; Described RCD circuit comprises resistance R, capacitor C and diode D; Wherein, diode D and capacitor C are connected in series, and resistance R and capacitor C are connected in parallel.
Preferably, described direct current mechanical switch is installed in the main track side of described direct current supply line.
Preferably, described direct current mechanical switch is installed in the negative wire side of described direct current supply line.
Preferably, described direct current mechanical switch comprises the first direct current mechanical switch and the second direct current mechanical switch; Described the first direct current mechanical switch is installed in the main track side of described direct current supply line, and described the second direct current mechanical switch is installed in the negative wire side of described direct current supply line.
The utility model also provides a kind of arc-suppressing method of direct current mechanical switch, may further comprise the steps:
S1, when described direct current mechanical switch was in closure state, described absorbing circuit was in short-circuit condition, and the terminal voltage of described absorbing circuit is 0;
S2, when described direct current mechanical switch changes off-state into from closure state, that is: the moving contact of described direct current mechanical switch is gradually in the process away from fixed contact, described absorbing circuit changes conducting state into from short-circuit condition, and described absorbing circuit absorbs the inductive current of the direct current supply line generation of described direct current machinery switch input terminal position;
S3, when described absorbing circuit absorbs described inductive current and reaches capacity state, described absorbing circuit automatic disconnection, and, at this moment, distance between the moving contact of described direct current mechanical switch and the described fixed contact reaches safe distance, and the arcing that described direct current mechanical switch produces in the disconnection process is absorbed by described absorbing circuit.
The beneficial effects of the utility model are as follows:
The utility model provides a kind of arc-control device and arc-suppressing method of direct current mechanical switch, this arc-control device is parallel to the two ends of conventional direct current mechanical switch, can effectively absorb the energy that produces when the direct current mechanical switch disconnects, the arcing phenomenon of avoiding the direct current mechanical switch in the disconnection process, to occur, thus useful life of direct current mechanical switch prolonged.And the arc-control device of this direct current mechanical switch has advantages of that also volume is little and cost is low, conveniently popularizes.
Description of drawings
The circuit diagram of the direct current mechanical switch that Fig. 1 provides for the utility model embodiment when main track side and absorbing circuit are C;
The circuit diagram of the direct current mechanical switch that Fig. 2 provides for the utility model embodiment when main track side and absorbing circuit are RC;
A kind of circuit diagram of the direct current mechanical switch that Fig. 3 provides for the utility model embodiment when main track side and absorbing circuit are RCD;
The another kind of circuit diagram of the direct current mechanical switch that Fig. 4 provides for the utility model embodiment when main track side and absorbing circuit are RCD;
The circuit diagram of the direct current mechanical switch that Fig. 5 provides for the utility model embodiment when negative wire side and absorbing circuit are C;
The circuit diagram of the direct current mechanical switch that Fig. 6 provides for the utility model embodiment when negative wire side and absorbing circuit are RC;
A kind of circuit diagram of the direct current mechanical switch that Fig. 7 provides for the utility model embodiment when negative wire side and absorbing circuit are RCD;
The another kind of circuit diagram of the direct current mechanical switch that Fig. 8 provides for the utility model embodiment when negative wire side and absorbing circuit are RCD;
The direct current mechanical switch that Fig. 9 provides for the utility model embodiment is a kind of circuit diagram when positive negative wire side respectively.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
The utility model provides a kind of arc-control device of direct current mechanical switch, and described arc-control device comprises absorbing circuit and direct current mechanical switch; Described direct current mechanical switch is installed on the direct current supply line, and described absorbing circuit is installed in parallel the two ends of direct current mechanical switch.
When using the said apparatus arc extinguishing, concrete arc-suppressing method may further comprise the steps:
S1, when the direct current mechanical switch was in closure state, absorbing circuit was in short-circuit condition, and the terminal voltage of absorbing circuit is 0;
S2, when the direct current mechanical switch changes off-state into from closure state, that is: the moving contact of direct current mechanical switch is gradually in the process away from fixed contact, absorbing circuit changes conducting state into from short-circuit condition, and absorbing circuit absorbs the inductive current of the direct current supply line generation of direct current machinery switch input terminal position;
S3, when absorbing circuit absorption inductor electric current reaches capacity state, the absorbing circuit automatic disconnection, and, at this moment, the moving contact of direct current mechanical switch and the distance between the fixed contact reach safe distance, and the arcing that the direct current mechanical switch produces in the disconnection process is absorbed circuit and absorbs.
Therefore, in the utility model, absorbing circuit is parallel to the two ends of conventional direct current mechanical switch, can effectively absorbs the energy that produces when the direct current mechanical switch disconnects, the arcing phenomenon of avoiding the direct current mechanical switch in the disconnection process, to occur.In the utility model, the concrete form of absorbing circuit is not limited, every possess the absorbing circuit of above-mentioned functions all within the utility model protection range.And the direct current mechanical switch can be installed in main track side or the negative wire side of direct current supply line or be installed in simultaneously the main track side or the negative wire side, and take direct current mechanical switch installation site as example, the below enumerates the particular circuit configurations of several arc-control devices.
Embodiment one: the direct current mechanical switch is installed in the main track side of direct current supply line
When the direct current mechanical switch was installed in the main track side of direct current supply line, absorbing circuit can arrange flexibly.The present embodiment is enumerated 4 kinds of absorbing circuits altogether.
The first absorbing circuit:
As shown in Figure 1, absorbing circuit is capacitor C.
Its operation principle is:
S1, when direct current machinery K switch was in closure state, capacitor C was in short-circuit condition, exported to load behind the direct current process direct current mechanical switch;
S2, when direct current machinery K switch changes off-state into from closure state, that is: the moving contact of direct current machinery K switch is gradually in the process away from fixed contact, capacitor C changes conducting state into from short-circuit condition, and the inductive current that the direct current supply line of direct current machinery switch input terminal position produces charges to capacitor C;
S3, when capacitor C absorption inductor electric current reached capacity state, capacitor C transferred cut-off state to, and at this moment, the moving contact of direct current machinery K switch and the distance between the fixed contact reach safe distance, and the complete off-state of whole power supply circuits does not power to the load.Because the arcing that the direct current mechanical switch produces in the disconnection process is absorbed by capacitor C, therefore, in direct current mechanical switch disconnection process, can not produce arc light.
The second absorbing circuit:
As shown in Figure 2, absorbing circuit is the RC circuit of series connection.
To capacitor C series resistance R, resistance R has damping action, and its operation principle is:
S1, when direct current machinery K switch was in closure state, capacitor C and resistance R place branch road were in short-circuit condition, and resistance R does not consume electric energy, exports to load behind the direct current process direct current mechanical switch;
S2, when direct current machinery K switch changes off-state into from closure state, that is: the moving contact of direct current machinery K switch is gradually in the process away from fixed contact, capacitor C changes conducting state into from short-circuit condition, the inductive current that the direct current supply line of direct current machinery switch input terminal position produces charges to capacitor C, simultaneously, by resistance R capacitor C is charged.Owing to the effect of resistance R, it is large that impedance becomes, and therefore, capacitor C has increased the shunt capacitance capacity of direct current machinery K switch equivalently, thus the voltage surge when having suppressed the disconnection of direct current machinery K switch;
S3, when capacitor C absorption inductor electric current reached capacity state, capacitor C transferred cut-off state to, and at this moment, the moving contact of direct current machinery K switch and the distance between the fixed contact reach safe distance, and the complete off-state of whole power supply circuits does not power to the load.Because the arcing that the direct current mechanical switch produces in the disconnection process is absorbed by capacitor C, therefore, in direct current mechanical switch disconnection process, can not produce arc light.
When direct current machinery K switch changed closure state into again from off-state, capacitor C was by the discharge of direct current mechanical switch, and its discharging current is limited by resistance R, avoided capacitor discharge current excessive and damage related electronic devices in the circuit.
The third absorbing circuit:
As shown in Figure 3 and Figure 4, absorbing circuit is the RCD circuit; Wherein, the RCD circuit comprises resistance R, capacitor C and diode D; Diode D and capacitor C are connected in series, and resistance R and capacitor C are connected in parallel.Concrete, among Fig. 3, after resistance R and capacitor C were connected in parallel, output was electrically connected diode D; Among Fig. 4, the current output terminal of diode D is electrically connected with the input of capacitor C with the resistance R of parallel connection.
Take RCD circuit shown in Figure 3 as example, diode D act as unilateal conduction, by diode D, can guarantee that electric current only when direct current machinery K switch disconnects, charges to capacitor C.
Embodiment two: the direct current mechanical switch is installed in the negative wire side of direct current supply line
When the direct current mechanical switch was installed in the negative wire side of direct current supply line, absorbing circuit can arrange flexibly.The present embodiment is enumerated 4 kinds of absorbing circuits altogether.
As shown in Figure 5, absorbing circuit is capacitor C.
As shown in Figure 6, absorbing circuit is the RC circuit of series connection.
As shown in Figure 7 and Figure 8, absorbing circuit is the RCD circuit; Wherein, the RCD circuit comprises resistance R, capacitor C and diode D; Diode D and capacitor C are connected in series, and resistance R and capacitor C are connected in parallel.Concrete, among Fig. 7, the current output terminal of diode D is electrically connected with the input of capacitor C with the resistance R of parallel connection; Among Fig. 8, after resistance R and capacitor C were connected in parallel, output was electrically connected diode D.
The principle of absorbing circuit shown in Fig. 5-8 is identical with the principle of absorbing circuit shown in Fig. 1-4, does not repeat them here.
Embodiment three: the direct current mechanical switch is installed in respectively main track side and the negative wire side of direct current supply line
Concrete, as shown in Figure 9, the direct current mechanical switch comprises the first direct current mechanical switch and the second direct current mechanical switch; The first direct current mechanical switch is installed in the main track side of direct current supply line, and the second direct current mechanical switch is installed in the negative wire side of direct current supply line.
At the two ends of the first direct current mechanical switch the first absorbing circuit in parallel, at the two ends of the second direct current mechanical switch the second absorbing circuit in parallel.Wherein, the structure of the first absorbing circuit is identical with the structure of Fig. 1 to Fig. 4, and the structure of the second absorbing circuit is identical with the structure of Fig. 5 to Fig. 8, no longer describes in detail at this.
In sum, arc-control device and the arc-suppressing method of the direct current mechanical switch that the utility model provides, this arc-control device is parallel to the two ends of conventional direct current mechanical switch, can effectively absorb the energy that produces when the direct current mechanical switch disconnects, the arcing phenomenon of avoiding the direct current mechanical switch in the disconnection process, to occur, thus useful life of direct current mechanical switch prolonged.And the arc-control device of this direct current mechanical switch has advantages of that also volume is little and cost is low, conveniently popularizes.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be looked protection range of the present utility model.
Claims (7)
1. the arc-control device of a direct current mechanical switch is characterized in that, described arc-control device comprises absorbing circuit and direct current mechanical switch; Described direct current mechanical switch is installed on the direct current supply line, and described absorbing circuit is installed in parallel the two ends of described direct current mechanical switch.
2. the arc-control device of direct current mechanical switch according to claim 1 is characterized in that, described absorbing circuit is electric capacity.
3. the arc-control device of direct current mechanical switch according to claim 1 is characterized in that, described absorbing circuit is the RC circuit of series connection.
4. the arc-control device of direct current mechanical switch according to claim 1 is characterized in that, described absorbing circuit is the RCD circuit; Described RCD circuit comprises resistance R, capacitor C and diode D; Wherein, diode D and capacitor C are connected in series, and resistance R and capacitor C are connected in parallel.
5. the arc-control device of direct current mechanical switch according to claim 1 is characterized in that, described direct current mechanical switch is installed in the main track side of described direct current supply line.
6. the arc-control device of direct current mechanical switch according to claim 1 is characterized in that, described direct current mechanical switch is installed in the negative wire side of described direct current supply line.
7. the arc-control device of direct current mechanical switch according to claim 1 is characterized in that, described direct current mechanical switch comprises the first direct current mechanical switch and the second direct current mechanical switch; Described the first direct current mechanical switch is installed in the main track side of described direct current supply line, and described the second direct current mechanical switch is installed in the negative wire side of described direct current supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320297413 CN203250666U (en) | 2013-05-28 | 2013-05-28 | Arc-extinguishing apparatus of direct-current mechanical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320297413 CN203250666U (en) | 2013-05-28 | 2013-05-28 | Arc-extinguishing apparatus of direct-current mechanical switch |
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| Publication Number | Publication Date |
|---|---|
| CN203250666U true CN203250666U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320297413 Expired - Lifetime CN203250666U (en) | 2013-05-28 | 2013-05-28 | Arc-extinguishing apparatus of direct-current mechanical switch |
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| CN (1) | CN203250666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325592A (en) * | 2013-05-28 | 2013-09-25 | 北京联动天翼科技有限公司 | Arc-control device and arc-control method of direct-current mechanical switch |
| WO2018138723A1 (en) * | 2017-01-24 | 2018-08-02 | Gridon Ltd. | Dc power supply arrangement |
-
2013
- 2013-05-28 CN CN 201320297413 patent/CN203250666U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325592A (en) * | 2013-05-28 | 2013-09-25 | 北京联动天翼科技有限公司 | Arc-control device and arc-control method of direct-current mechanical switch |
| WO2018138723A1 (en) * | 2017-01-24 | 2018-08-02 | Gridon Ltd. | Dc power supply arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100095 floor No. 1, courtyard No. 33, purple Bird Road, Haidian District, Beijing City, -1 to 5 floor 101 Patentee after: BEIJING LINKDATA TECHNOLOGIES CO.,LTD. Address before: 100044 Beijing city Haidian District Road No. 5 Building 2 401 P.Tricuspidata Patentee before: BEIJING LIANDONG TIANYI TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |
|
| CX01 | Expiry of patent term |