CN204243722U - Be suitable for the indoor overcurrent protector protecting railway circuit safety - Google Patents
Be suitable for the indoor overcurrent protector protecting railway circuit safety Download PDFInfo
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- CN204243722U CN204243722U CN201420594843.4U CN201420594843U CN204243722U CN 204243722 U CN204243722 U CN 204243722U CN 201420594843 U CN201420594843 U CN 201420594843U CN 204243722 U CN204243722 U CN 204243722U
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- overcurrent
- transducer
- processor module
- indoor
- short circuit
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Abstract
The utility model relates to a kind of indoor overcurrent protector being suitable for protecting railway circuit safety, comprise: for detecting overcurrent transducer and the short circuit current transducer of main circuit current, the processor module be connected with the signal output part of short circuit current transducer with overcurrent transducer; Processor module is suitable for the current detection signal according to overcurrent transducer, controls main electronic switch time delay disconnection or closed reduction; And according to the current detection signal of short circuit current transducer, control main electronic switch and disconnect or closed reduction; Processor module is also connected with clock chip, is set time delay opening time and the closed reduction time of main electronic switch by this clock chip; The utility model realizes overcurrent, short-circuit protection to main circuit by detecting current value in main circuit; namely time delayed turn-off, immediately shutoff carried out to main circuit and automatically recover the operation of conducting; greatly can alleviate the labour intensity of execute-in-place, improve the usefulness of signal management work.
Description
Technical field
The utility model relates to railway traffic safety field, particularly relates to a kind of indoor overcurrent protector being suitable for protecting railway circuit safety.
Background technology
All kinds of control power failure causes railway signals equipment can not one of the key factor of normal reliable work.At present, the indoor overcurrent of railway signals equipment or short-circuit protector mainly adopt fuse or circuit breaker, wherein, fuse with low cost, the discreteness that its blow-out current value ubiquity is larger, particularly also exist due to aging and cause in use fuse fracture of wire phenomenon occurs, normally run to equipment and bring serious hidden danger, even two fuse equipment exists above drawback equally; Circuit breaker all can play a protective role to overcurrent and short circuit; along with technological progress; the current class of circuit breaker continues to increase; time and the sensitivity of cutting off electric current also improve constantly; but circuit breaker does not possess runback function, particularly cause in circuit breaker tripping at the temporary over-current causing short circuit due to power-supply fluctuation, thunder and lightning strike, electrified impact, misoperation and cause or short circuit; circuit breaker can not recover conducting voluntarily, also needs artificial going to check and recover.
Therefore, need to design a kind of overcurrent protector with runback, time delay or turn-off function immediately, to realize monitoring to railway circuital current, protection, thus ensure that railway traffic signal system runs well.
Utility model content
The purpose of this utility model is to provide a kind of indoor overcurrent protector being suitable for protecting railway circuit safety, cannot realize the time delay of institute's protective circuit or the technical problem turning off and automatically recover conducting immediately to solve conventional overcurrent protector.
In order to solve the problems of the technologies described above, the utility model provides a kind of indoor overcurrent protector being suitable for protecting railway circuit safety, comprise: for detecting overcurrent transducer and the short circuit current transducer of main circuit current, the processor module be connected with the signal output part of short circuit current transducer with described overcurrent transducer; Described processor module is suitable for the current detection signal according to overcurrent transducer, controls main electronic switch time delay disconnection or closed reduction; And according to the current detection signal of short circuit current transducer, control described main electronic switch and disconnect or closed reduction; Described processor module is also connected with clock chip, and sets delay time and the closed reduction time of described main electronic switch disconnection by this clock chip.
Preferably, in order to avoid signal disturbing, described overcurrent transducer, short circuit current transducer are connected with the signal input part of described processor module respectively by an auxiliary electron switch, and the control end of this auxiliary electron switch is also connected with the signal output part of overcurrent transducer with short circuit current transducer.
Preferably, in order to solve after main circuit disconnects power supply further, carry out the technical problem resetted, described processor module is also connected for the reset button controlled of carrying out processor module resetting with one, possesses reset function to make indoor overcurrent protector.
Preferably, described processor module is also connected the state information that is applicable to show main circuit with a display module.
Preferably, the main circuit of described main electronic switch rear end also connects a failure protector, to realize when Module Fail such as the processor module being positioned at front end, current sensors, playing a protective role to power consumption equipment.
Technique scheme of the present utility model has the following advantages compared to existing technology: the utility model realizes overcurrent, short-circuit protection to main circuit by detecting current value in main circuit; namely time delayed turn-off, immediately shutoff carried out to main circuit and automatically recover the operation of conducting; greatly can alleviate the labour intensity of execute-in-place, improve the usefulness of signal management work.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below basis specific embodiment and by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 shows the theory diagram of described indoor the first execution mode of overcurrent protector;
Fig. 2 shows the theory diagram of described indoor overcurrent protector the second execution mode.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with embodiment also with reference to accompanying drawing, the utility model is further described.Should be appreciated that, these describe just exemplary, and do not really want to limit scope of the present utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present utility model.
Embodiment 1
Fig. 1 shows the theory diagram of described indoor the first execution mode of overcurrent protector.
As shown in Figure 1, a kind of indoor overcurrent protector being suitable for protection railway circuit safety, comprise: for detecting overcurrent transducer and the short circuit current transducer of main circuit current, the processor module be connected with the signal output part of short circuit current transducer with described overcurrent transducer; Described processor module is suitable for the current detection signal according to overcurrent transducer, controls main electronic switch time delay disconnection or closed reduction; And according to the current detection signal of short circuit current transducer, control described main electronic switch and disconnect or closed reduction; Described processor module is also connected with clock chip, and sets delay time and the closed reduction time of described main electronic switch disconnection by this clock chip.
Power consumption equipment in Fig. 1 is railway signals equipment.
Wherein, described overcurrent transducer and short circuit current transducer all adopt current sensor, and main circuit is each passed through the magnetic of described overcurrent transducer and short circuit current transducer.Processor in described processor module can be, but not limited to adopt the processor chips such as single-chip microcomputer, and described clock chip adopts but is not limited to DS12C887, DS1302Z.
Concrete, described overcurrent transducer, short circuit current transducer are suitable for gathering the current value on main circuit respectively.
Wherein, the concrete steps of overcurrent protection comprise: the criterion of described current circuit is excessively for its current value is more than 1.3I
0(I
0nominal current or setting electric current) and be less than 3I
0.If when described processor module judges that the electric current in main circuit is overcurrent, disconnected to control main electronic switch time delay by the delay time set by clock chip, namely cut off main circuit and power; And according to the described closed reduction time, processor module controls main electronic switch closes, recover main circuit and power, whether revert to normal value with the electric current detecting main circuit, if electric current continues overcurrent, then delay cutoff main circuit is powered again; Optionally, this process can repeat 3-4 time, if electric current is also in over-current state, then permanent shut-down main circuit is powered.
The concrete steps of short-circuit protection comprise: the criterion of short circuit current is more than or equal to 3I for its current value
0.If described processor module judges that the electric current in main circuit is short circuit current, then control main electronic switch and disconnect, namely cut off main circuit and power; And according to the described closed reduction time, processor module controls main electronic switch closes, recover main circuit and power, whether revert to normal value with the electric current detecting main circuit, if or short circuit current, then again cut off main circuit and power; Optionally, this process can repeat 3-4 time, if electric current is also in short-circuit condition, then permanent shut-down main circuit is powered.
Described processor module is also connected for the reset button controlled of carrying out processor module resetting with one.Described reset button is suitable for forever disconnecting at main circuit and recovering conducting main circuit after failture evacuation, that is, described processor module is after the reset signal of key entry receiving described reset button, controls main electronic switch closes, namely restores electricity.
Preferably, described processor module is also connected the state information that is applicable to show main circuit with a display module.
Preferably, the main circuit of described main electronic switch rear end also connects a failure protector, to realize when Module Fail such as the processor module being positioned at front end, current sensors, playing a protective role to power consumption equipment.Described failure protector is such as but not limited to protector such as employing fuse or air switch etc.
In the present embodiment about the method for the output signal of processor module process overcurrent transducer and short circuit current transducer at paper document: the third phase in 2006 is published in " Hall current sensor and the application in power protection thereof " of periodical " instrument and meter user " has carried out detailed discussion.Processor module is connected to carry out time setting method with clock chip belongs to prior art.Processor module is connected to carry out corresponding display method to display module belongs to prior art.
Embodiment 2
Fig. 2 shows the theory diagram of described indoor overcurrent protector the second execution mode.
As shown in Figure 2; as the second execution mode of described indoor overcurrent protector; namely on the basis of embodiment 1; with the addition of auxiliary electron switch; concrete; described overcurrent transducer, short circuit current transducer are connected with the signal input part of described processor module respectively by an auxiliary electron switch, and the control end of this auxiliary electron switch is also connected with the signal output part of overcurrent transducer, short circuit current transducer.
The interference of small-signal to processor module is effectively avoided by this auxiliary electron switch, concrete, the threshold voltage of the control end of auxiliary electron switch can be set, then when the voltage of main circuit is higher than I
0and lower than 1.3 I
0time, auxiliary electron switch is in closed condition, and processor is also without the need to processing current detection signal.Only have when electric current is higher than 1.3 I
0time, the signal strength signal intensity that described overcurrent transducer and short circuit current transducer produce just can reach described threshold voltage, and auxiliary electron switch is closed, and described processor module receives current detection signal, makes corresponding actions.
Overcurrent protection is identical with embodiment 1 with the detailed process of short-circuit protection, repeats no more here.
The main electronic switch adopted in embodiment 1 and embodiment 2 and auxiliary electron switch can adopt but be not limited to thyristor, transistor, field effect transistor, controllable silicon, relay.
Should be understood that, above-mentioned embodiment of the present utility model only for exemplary illustration or explain principle of the present utility model, and is not formed restriction of the present utility model.Therefore, any amendment made when not departing from spirit and scope of the present utility model, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.In addition, the utility model claims be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (5)
1. one kind is suitable for the indoor overcurrent protector protecting railway circuit safety, it is characterized in that, comprise: for detecting overcurrent transducer and the short circuit current transducer of main circuit current, the processor module be connected with the signal output part of short circuit current transducer with described overcurrent transducer;
Described processor module is suitable for the current detection signal according to overcurrent transducer, controls main electronic switch time delay disconnection or closed reduction; And
According to the current detection signal of short circuit current transducer, control described main electronic switch and disconnect or closed reduction;
Described processor module is also connected with clock chip, and sets delay time and the closed reduction time of described main electronic switch disconnection by this clock chip.
2. indoor overcurrent protector according to claim 1, is characterized in that,
Described overcurrent transducer, short circuit current transducer are connected with the signal input part of described processor module respectively by an auxiliary electron switch, and the control end of this auxiliary electron switch is also connected with the signal output part of overcurrent transducer with short circuit current transducer.
3. indoor overcurrent protector according to claim 1 and 2, is characterized in that, described processor module is also connected for the reset button controlled of carrying out processor module resetting with one.
4. indoor overcurrent protector according to claim 3, is characterized in that, described processor module is also connected the state information being applicable to show main circuit with a display module.
5. indoor overcurrent protector according to claim 4, is characterized in that, the main circuit of described main electronic switch rear end also connects a failure protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594843.4U CN204243722U (en) | 2014-10-14 | 2014-10-14 | Be suitable for the indoor overcurrent protector protecting railway circuit safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594843.4U CN204243722U (en) | 2014-10-14 | 2014-10-14 | Be suitable for the indoor overcurrent protector protecting railway circuit safety |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204243722U true CN204243722U (en) | 2015-04-01 |
Family
ID=52773169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420594843.4U Expired - Fee Related CN204243722U (en) | 2014-10-14 | 2014-10-14 | Be suitable for the indoor overcurrent protector protecting railway circuit safety |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204243722U (en) |
-
2014
- 2014-10-14 CN CN201420594843.4U patent/CN204243722U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20171014 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |