CN104253407B - A kind of outdoor use overcurrent protector for being suitable to protect railway circuit safety - Google Patents
A kind of outdoor use overcurrent protector for being suitable to protect railway circuit safety Download PDFInfo
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- CN104253407B CN104253407B CN201410542997.3A CN201410542997A CN104253407B CN 104253407 B CN104253407 B CN 104253407B CN 201410542997 A CN201410542997 A CN 201410542997A CN 104253407 B CN104253407 B CN 104253407B
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Abstract
The present invention relates to a kind of outdoor use overcurrent protector for being suitable to protect railway circuit safety, it is characterised in that include：The electricity-fetching module being connected with main circuit, the charge and discharge control module being connected with the electricity-fetching module, the charge and discharge control module are connected with an accumulator；The accumulator is powered by charge and discharge control module stores electric energy or to the outdoor use overcurrent protector；The present invention realizes storage electric energy by electricity-fetching module, charge and discharge control module and accumulator or the outdoor use overcurrent protector is powered, and makes the outdoor use overcurrent protector departing from working power, can work independently out of doors.
Description
Technical field
The present invention relates to railway traffic safety field, more particularly to a kind of outdoor use for being suitable to protect railway circuit safety
Overcurrent protector.
Background technology
All kinds of control power failures are to cause railway signals equipment to be unable to one of key factor of normal reliable work.Mesh
Before, the outdoor use excessively stream of railway signals equipment or short-circuit protector mainly adopt fuse or chopper, wherein, the low cost of fuse
Honest and clean, the larger discreteness of its blow-out current value generally existing is especially in the presence of due to aging and cause fuse in use
Fracture of wire phenomenon, to equipment, normally operation brings serious hidden danger, even double fuse equipments equally exist above drawback；Chopper
Excessively stream and short circuit can be played a protective role, with technological progress, the current class of chopper is continued to increase, cut off electric current
Time and sensitivity are also improved constantly, but, chopper does not possess runback function, is particularly being beaten due to power-supply fluctuation, thunder and lightning
Hit, it is electrified affect, misoperation causes short circuit and during the temporary over-current or short circuit that cause cause circuit breaker tripping, chopper can not
Voluntarily recover conducting, in addition it is also necessary to which artificial goes to check and recover, and traditional overcurrent protector can only be installed on interior, in room
It is outer due to lacking supply line in the case of, it is impossible to maintain the normal work of overcurrent protector.
The content of the invention
It is an object of the invention to provide a kind of outdoor use overcurrent protector for being suitable to protect railway circuit safety, to solve to pass
The overcurrent protector of system relies on utility grid and powers, it is impossible to the technical problem of outside work.
In order to solve above-mentioned technical problem, the invention provides a kind of outdoor use excessively stream for being suitable to protect railway circuit safety
Protector, including：The electricity-fetching module being connected with main circuit, the charge and discharge control module being connected with the electricity-fetching module, the discharge and recharge
Control module is connected with an accumulator；The accumulator passes through charge and discharge control module stores electric energy or to the outdoor use excessively stream
Protector is powered.
Preferably, in order to solve conventional overcurrent protector cannot realize the time delay to institute's protection circuit or immediately turn off and from
The dynamic technical problem for recovering conducting；The outdoor use overcurrent protector also includes：For detecting the overcurrent of main circuit current
Sensor and short circuit current sensor, are connected with the signal output part of the overcurrent sensor and short circuit current sensor
Processor module；The processor module is suitable to the current detection signal according to overcurrent sensor, controls main electrical switch
Time delay is opened or closed reset；And according to the current detection signal of short circuit current sensor, control the main electronic cutting shut-off
Open or closed reduction；The processor module is also connected with clock chip, and sets the main electronic cutting by the clock chip
Delay time and closed reduction time that shut-off is opened.By detecting that current value realizes excessively stream, short circuit to main circuit in main circuit
Protection, i.e., carry out time delayed turn-off, immediately turn off and recover automatically the operation for turning on, can mitigate significantly execute-in-place to main circuit
Labor intensity, improve signal management work efficiency.
Preferably, in order to avoid signal is disturbed, the overcurrent sensor, short circuit current sensor are auxiliary by one respectively
Help electrical switch and the signal input part of the processor module to be connected, and the control end of the auxiliary electron switch is also electric with excessively stream
Flow sensor is connected with the signal output part of short circuit current sensor.
Preferably, disconnect after power supply to further solve main circuit, the technical problem for being resetted, the processor die
Block is also connected for SR that reset control is carried out to processor module with one, so that outdoor use overcurrent protector possesses multiple
Bit function.
Preferably, the processor module is also connected with a display module with the status information suitable for showing main circuit.
Preferably, the main circuit of the main electrical switch rear end is also connected with a failure protector, to realize when positioned at front end
Processor module, the Module Fail such as current sensor when, electrical equipment is played a protective role.
Preferably, blood pressure lowering power taking for convenience, the electricity-fetching module include：What is be connected with main circuit is suitable to a change of blood pressure lowering
Depressor, and current rectifying and wave filtering circuit；The main coil of the transformator is connected with main circuit, its secondary coil and the rectifying and wave-filtering
Circuit is connected, and the current rectifying and wave filtering circuit is connected with the charge and discharge control module.
The above-mentioned technical proposal of the present invention has advantages below compared to existing technology：The present invention passes through electricity-fetching module, charge and discharge
Electric control module and accumulator realize storage electric energy or the outdoor use overcurrent protector are powered, and make the outdoor use excessively stream
Protector can be worked independently out of doors departing from working power.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 shows the theory diagram of the first embodiment of the outdoor use overcurrent protector；
Fig. 2 shows the theory diagram of second embodiment of the outdoor use overcurrent protector.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are simplified schematic diagram, only with
The basic structure of the illustration explanation present invention, therefore which only shows the composition relevant with the present invention.
Embodiment 1
Fig. 1 shows the theory diagram of the first embodiment of the outdoor use overcurrent protector.
As shown in figure 1, a kind of outdoor use overcurrent protector for being suitable to protect railway circuit safety, including：With main circuit phase
Electricity-fetching module even, the charge and discharge control module being connected with the electricity-fetching module, the charge and discharge control module are connected with an accumulator；
The accumulator is powered by charge and discharge control module stores electric energy or to the outdoor use overcurrent protector.
Wherein, the electricity-fetching module includes：What is be connected with main circuit is suitable to a transformator of blood pressure lowering, and rectifying and wave-filtering
Circuit.Specifically, the main coil of the transformator is connected with the main circuit, and its secondary coil is connected with current rectifying and wave filtering circuit, institute
State filter circuit to be connected with the charge and discharge control module.The charge and discharge control module has correlation to chat in the prior art
State, for example Authorization Notice No. CN 201674254U intelligent accummulator charge and discharge devices.The accumulator can be deposited to electric energy
Storage, after processor module cuts off main circuit, the accumulator is able to maintain that the normal operation of outdoor use overcurrent protector, specifically
Function mode is referring to part below embodiment.
The outdoor use overcurrent protector also includes：For detecting the overcurrent sensor and short circuit electricity of main circuit current
Flow sensor, the processor module being connected with the signal output part of the overcurrent sensor and short circuit current sensor；Institute
State processor module and be suitable to the current detection signal according to overcurrent sensor, control main electrical switch time delay and be opened or closed
Reset；And according to the current detection signal of short circuit current sensor, control the main electrical switch and be opened or closed reset；Institute
State processor module to be also connected with clock chip, and the delay time that the main electrical switch disconnects is set by the clock chip
With the closed reduction time.
Electrical equipment in Fig. 1 is railway signals equipment.
Wherein, the overcurrent sensor and short circuit current sensor adopt current sensor, main circuit to wear respectively
Cross the magnetic of the overcurrent sensor and short circuit current sensor.Processor in the processor module can with but do not limit
In using processor chips such as single-chip microcomputers, the clock chip is adopted but is not limited to DS12C887, DS1302Z.
Specifically, the overcurrent sensor, short circuit current sensor are respectively adapted to gather the current value on main circuit.
Wherein, the concrete steps of overcurrent protection include：The criterion for crossing current circuit is its current value more than 1.3I0
(I0 nominal currents or setting electric current) and it is less than 3I0.If the processor module judges electric current in main circuit for overcurrent
When, disconnected with controlling the main electrical switch time delay by the delay time set by clock chip, that is, cut off main circuit and power；
And according to the closed reduction time, the processor module control main electrical switch closure is recovered main circuit and is powered, to examine
Whether the electric current for surveying main circuit reverts to normal value, if electric current continues excessively stream, delay cutoff main circuit is powered again；It is optional
, this process can repeat 3-4 time, if electric current is also in over-current state, permanent shut-down main circuit is powered.
The concrete steps of short-circuit protection include：The criterion of short circuit current is that its current value is more than or equal to 3I0.If described
Processor module judges that the electric current in main circuit controls the main electrical switch disconnection for short circuit current, then, that is, cut off main circuit
Power supply；And according to the closed reduction time, the processor module control main electrical switch closure is recovered main circuit and is supplied
Electricity, to detect whether the electric current of main circuit reverts to normal value, if or short circuit current, it is again switched off main circuit and powers；Can
Choosing, this process can repeat 3-4 time, if electric current is also in short-circuit condition, permanent shut-down main circuit is powered.
The processor module is also connected for SR that reset control is carried out to processor module with one.It is described multiple
Position button is suitable to forever disconnect in main circuit and recover conducting main circuit after failture evacuation, i.e. the processor module is being received
To after the reset signal of the key entry of the SR, the main electrical switch closure is controlled, that is, is restored electricity.
Preferably, the processor module is also connected with a display module with the status information suitable for showing main circuit.
Preferably, the main circuit of the main electrical switch rear end is also connected with a failure protector, to realize when positioned at front end
Processor module, the Module Fail such as current sensor when, electrical equipment is played a protective role.The failure protector is for example
But it is not limited to using protectors such as fuse or air switches.
The output signal of overcurrent sensor and short circuit current sensor is processed in the present embodiment with regard to processor module
Method in paper document：The third phase in 2006 is published in periodical《Instrument and meter user》" Hall current sensor and its
It is discussed in detail in application in power protection ".Processor module is connected to carry out the side of time setting with clock chip
It is owned by France in prior art.Processor module is connected to display module and belongs to prior art in the method for carrying out corresponding display.
Embodiment 2
Fig. 2 shows the theory diagram of second embodiment of the outdoor use overcurrent protector.
As shown in Fig. 2 as second embodiment of the outdoor use overcurrent protector, i.e., on the basis of embodiment 1
On, auxiliary electron switch is with the addition of, specifically, the overcurrent sensor, short circuit current sensor are respectively by an auxiliary
Electrical switch is connected with the signal input part of the processor module, and the control end of auxiliary electron switch also with overcurrent
Sensor, the signal output part of short circuit current sensor are connected.
Interference of the small-signal to processor module is effectively avoided by the auxiliary electron switch, specifically, can be set
Determine auxiliary electron switch control end threshold voltage, then when main circuit voltage be higher than I0 and less than 1.3I0 when, auxiliary electron
Switch is closed, and processor is without processing to current detection signal.Only when electric current is higher than 1.3I0, institute
The signal intensity for stating overcurrent sensor and the generation of short circuit current sensor can be only achieved the threshold voltage, make auxiliary electron
Switch closure, the processor module receive current detection signal, make corresponding actions.
The detailed process of overcurrent protection and short-circuit protection is same as Example 1, repeats no more here.
The described main electrical switch adopted in embodiment 1 and embodiment 2 and auxiliary electron switch can be adopted but be not limited to
IGCT, transistor, field effect transistor, controllable silicon, relay.
With the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various change and modification can be carried out in the range of without departing from this invention technological thought entirely.The technology of this invention
Property scope is not limited to the content in description, it is necessary to its technical scope is determined according to right.
Claims (6)
1. it is a kind of be suitable to protect railway circuit safety outdoor use overcurrent protector, it is characterised in that include：It is connected with main circuit
Electricity-fetching module, the charge and discharge control module being connected with the electricity-fetching module, the charge and discharge control module are connected with an accumulator；
The accumulator is powered by charge and discharge control module stores electric energy or to the outdoor use overcurrent protector；
The outdoor use overcurrent protector also includes：For detecting that the overcurrent sensor and short circuit current of main circuit current are passed
Sensor, the processor module being connected with the signal output part of the overcurrent sensor and short circuit current sensor；
The processor module is suitable to the current detection signal according to overcurrent sensor, controls main electrical switch time delay and disconnects
Or closed reduction；And
According to the current detection signal of short circuit current sensor, control the main electrical switch and be opened or closed reset；
The processor module is also connected with clock chip, and sets prolonging for the main electrical switch disconnection by the clock chip
When time and closed reduction time.
2. outdoor use overcurrent protector according to claim 1, it is characterised in that
The overcurrent sensor, short circuit current sensor are switched and the processor module by an auxiliary electron respectively
Signal input part is connected, and the control end of auxiliary electron switch also with overcurrent sensor and the letter of short circuit current sensor
Number outfan is connected.
3. outdoor use overcurrent protector according to claim 1 and 2, it is characterised in that the processor module is also with
SR for reset control is carried out to processor module is connected.
4. outdoor use overcurrent protector according to claim 3, it is characterised in that the processor module is also shown with
Module is connected with the status information suitable for showing main circuit.
5. outdoor use overcurrent protector according to claim 4, it is characterised in that the main electricity of the main electrical switch rear end
Road is also connected with a failure protector.
6. outdoor use overcurrent protector according to claim 1, it is characterised in that the electricity-fetching module includes：With main electricity
The transformator for being suitable to blood pressure lowering that road is connected, and current rectifying and wave filtering circuit；
The main coil of the transformator is connected with main circuit, and its secondary coil is connected with the current rectifying and wave filtering circuit, and the rectification is filtered
Wave circuit is connected with the charge and discharge control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410542997.3A CN104253407B (en) | 2014-10-14 | 2014-10-14 | A kind of outdoor use overcurrent protector for being suitable to protect railway circuit safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410542997.3A CN104253407B (en) | 2014-10-14 | 2014-10-14 | A kind of outdoor use overcurrent protector for being suitable to protect railway circuit safety |
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| CN104253407A CN104253407A (en) | 2014-12-31 |
| CN104253407B true CN104253407B (en) | 2017-04-05 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680412B (en) * | 2016-03-04 | 2018-03-20 | 常州东方铁路器材有限公司 | A kind of intelligent self-recovery overcurrent protector and its method of work |
| US10424908B2 (en) * | 2017-03-21 | 2019-09-24 | Texas Instruments Incorporated | Electronic fuse |
| CN110474402A (en) * | 2019-09-18 | 2019-11-19 | 展讯通信（深圳）有限公司 | Charge current foldback circuit and method |
| CN110970866A (en) | 2019-11-14 | 2020-04-07 | 华为技术有限公司 | Contactor control device and power supply system |
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| CN101667747A (en) * | 2009-08-14 | 2010-03-10 | 珠海瑞捷电气有限公司 | Conversion module for extracting working power from high-voltage power |
| CN101888121A (en) * | 2010-06-09 | 2010-11-17 | 重庆大学 | Energy acquisition and power supply management device of current transformer of overhead line |
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| CN103887899A (en) * | 2013-12-16 | 2014-06-25 | 重庆大学 | Induction energy taking power source of electric transmission line monitoring device |
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Patent Citations (5)
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| CN101667747A (en) * | 2009-08-14 | 2010-03-10 | 珠海瑞捷电气有限公司 | Conversion module for extracting working power from high-voltage power |
| CN101888121A (en) * | 2010-06-09 | 2010-11-17 | 重庆大学 | Energy acquisition and power supply management device of current transformer of overhead line |
| CN102262179A (en) * | 2011-04-19 | 2011-11-30 | 重庆大学 | Unipolar current-voltage integration sensor |
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| CN104253407A (en) | 2014-12-31 |
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Effective date of registration: 20190222 Address after: 213000 No. 257 Wujin Road, Changzhou City, Jiangsu Province Patentee after: Jiangsu Kailong Electronics Co., Ltd. Address before: 213025 No. 156 Dongfang East Road, Qishuyan Economic Development Zone, Changzhou City, Jiangsu Province Patentee before: Changzhou Dongfang Tielu Qicai Co., Ltd. |
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