CN203747385U - Switch machine time-limited open-phase protector with two sets of control circuit - Google Patents
Switch machine time-limited open-phase protector with two sets of control circuit Download PDFInfo
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- CN203747385U CN203747385U CN201420101703.9U CN201420101703U CN203747385U CN 203747385 U CN203747385 U CN 203747385U CN 201420101703 U CN201420101703 U CN 201420101703U CN 203747385 U CN203747385 U CN 203747385U
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- 230000005284 excitation Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
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- 238000006243 chemical reaction Methods 0.000 description 3
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Abstract
A switch machine time-limited open-phase protector with two sets of control circuit comprises a current transformer, a first controller, a first driving circuit, a first dynamic circuit, a first diode, a protection relay, a second diode, a second dynamic circuit, a second driving circuit, a second controller, a second switching power supply, a first switching power supply, a second power transformer, a first power transformer, and an indication and alarm circuit. The beneficial effects of the utility model are that: the protector is equipped with two sets of independent control circuit, and adopts the parallel working mode; when either set of control circuit fails, the protector can normally output the DC 24V voltage used by the load and can timely alarm the external to prompt the user to repair; and because the probability that the two sets of independent control circuit fail at the same time is quite small, the mode that the two sets of independent control circuit are used simultaneously can significantly improve the availability and maintainability of the protector.
Description
Technical field
The utility model belongs to railway switch machine resist technology field, particularly relates to a kind of goat time-limit open-phase protector with two cover control circuits.
Background technology
In the three phase alternating current motor input circuit of point machine, seal in " time-limit open-phase protector ", when the control relay in goat on off control loop picks up moment, goat moment powers on and starts action, the input current of its three phase alternating current motor will pass through the built-in current sensor of " time-limit open-phase protector ", at three-phase current, all normally (amplitude is enough, not phase shortage) prerequisite under, the MCU(microcontroller of time-limit open-phase protector) will drive " power conversion " circuit operation, produce the output voltage of direct current 24V, this voltage drives BHJ(protection relay) excitation picks up, form the self stick circuit of goat on off control circuit controls relay.After goat conversion puts in place, the chop contact in start and stop loop disconnects, and automatically cuts off actuating circuit; the three phase alternating current motor input power-off of goat, protector no current flows through, and time-limit open-phase protector stops 24V output; BHJ thereupon loss of excitation falls, and completes track switch transfer process one time.
As shown in Figure 1, in the time that goat moves, A, B, C three-phase current, by disconnected phase test section, induce voltage VS to time-limit open-phase protector theory diagram, obtain direct voltage VD after rectifying and wave-filtering, can judge whether that accordingly open phase fault occurs.Meanwhile MCU(microcontroller) timing, when there being disconnected phase situation to occur, or after goat exceeds schedule time running time, MCU closes output of " power conversion " part, and BHJ loss of excitation falls, and cuts off goat power supply.This circuit adopts the dynamic way of output, and in circuit, any element breaks down, the equal no-output of protector.
There is certain potential safety hazard in sort circuit design:
(1) in the time of goat off-duty, if broken down in protector circuit, attendant cannot find protector fault in time, and reason is that protector lacks faults itself monitoring function; In this case, there will be goat cannot start operation, the problem that track switch cannot be changed, thus affect railways train operation efficiency.
(2), during goat action, if protector circuit breaks down, goat will Halfway Stopping move, and occurs that track switch cannot be pulled the problem putting in place, needs manually carry out manual operation to trackside, also can affect railways train operation efficiency.
Above-mentioned phenomenon illustrates that existing time-limit open-phase protector does not have certain resistivity to fault, has defect, needs to improve.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of goat time-limit open-phase protector with two cover control circuits.
In order to achieve the above object, the goat time-limit open-phase protector with two cover control circuits that the utility model provides comprises: current transformer, the first controller, the first drive circuit, the first dynamic circuit, the first diode, protection relay, the second diode, the second dynamic circuit, the second drive circuit, second controller, second switch power supply, the first Switching Power Supply, second source transformer, the first power transformer and instruction and warning circuit; Wherein: the first drive circuit, the first dynamic circuit, the first diode, the first Switching Power Supply and the first power transformer composition first control circuit, the second diode, the second dynamic circuit, the second drive circuit, second controller, second switch power supply and second source transformer form second control circuit, and two control circuits have identical internal structure and effect; First control circuit and second control circuit and current transformer and instruction and warning circuit form double loop control circuit jointly, and protection relay is output action relay;
Current transformer is threephase current transformer, and its A phase input is connected mutually with power supply A, and output is connected with second control circuit with first control circuit respectively;
The first controller in first control circuit is the controller circuitry taking microcontroller as core, and its three inputs are connected with the three-phase output end of current transformer respectively, and two outputs are connected with warning circuit with instruction with the first drive circuit respectively; The first controller also interconnects with second controller;
The first drive circuit is output driving circuit, and an one input is connected with the A phase output terminal of current transformer, and output is connected with the first dynamic circuit;
The first dynamic circuit is output control circuit, and an one output is connected with the anode of the first diode, and another output is connected with the second dynamic circuit;
The first Switching Power Supply is the working power of first control circuit, and its input is connected with the first power transformer, and output is connected with the first dynamic circuit with the first controller respectively;
The first power transformer is the power transformer of first control circuit, and two input is connected with the outlet of C phase with the B phase outlet of three phase mains respectively;
The first diode is output isolating device, and negative electrode is connected with the second diode cathode;
Three inputs of the second controller in second control circuit are connected with the three-phase output end of current transformer respectively, and two outputs are connected with warning circuit with instruction with the second drive circuit respectively;
An input of the second drive circuit is connected with the B phase output terminal of current transformer, and output is connected with the second dynamic circuit;
An output of the second dynamic circuit is connected with the anode of the second diode, and another output is connected with the first dynamic circuit;
Second switch power supply is the working power of second control circuit, and its input is connected with second source transformer, and output is connected with the second dynamic circuit with second controller respectively;
Second source transformer is the power transformer of second control circuit, and two input is connected with the outlet of B phase with the A phase outlet of three phase mains respectively;
Instruction is with warning circuit for showing and alarm output circuit, and it is connected with second controller with the first controller respectively;
Protection relay is actuation of an alarm output relay, and its one end is connected with the negative electrode of the second diode with the first diode simultaneously, and the output that the other end and the first dynamic circuit and the second dynamic circuit are existed side by side after connection joins.
In order to improve the resistivity of time-limit open-phase protector to fault, this programme also solves the problem of existing protector by the mode that working method and increase malfunction monitoring are reported to the police with two cover independent controling circuits.
The goat time-limit open-phase protector of what the utility model provided have two cover control circuits has following beneficial effect:
(1) protector arranges two cover independent controling circuits, takes parallel operation mode, wherein any a set of control circuit fault, and protector can normally be exported direct current 24V voltage for load externally alarm user maintenance in time; The probability simultaneously losing efficacy due to two cover independent controling circuits is extremely low, so the mode (supporting malfunction monitoring warning function) of this two cover independent controling circuit use can significantly improve the availability of protector with maintainable.
(2) control circuit mainly comprises the functions such as current detecting, disconnected judgement mutually, dynamic circuit, malfunction monitoring, warning instruction, and these functions are controlled and realized by MCU.
(3) the electric current formation voltage source producing when goat moves, for drive circuit provides power supply.In the time that goat does not move, if MCU mistake output drive signal, the energy that does not have voltage source to provide due to drive circuit; so protector can not produce wrong output, maintain no-voltage output, protection relay is failure to actuate without operating voltage; can not make goat misoperation, so its fail safe is high.
(4) monitoring, alarming function, in the time breaking down in time-limit open-phase protector inside, reports to the police in time automatically externally, and prompting maintenance personnel inspection equipment is very helpful to reducing trouble shoot workload, compression fault effects time.
Brief description of the drawings
Fig. 1 is the theory diagram of goat time-limit open-phase protector in prior art.
The structural representation of the goat time-limit open-phase protector with two cover control circuits that Fig. 2 provides for the utility model.
The schematic diagram of the goat time-limit open-phase protector with two cover control circuits that Fig. 3-Fig. 5 provides for the utility model.
Embodiment
The goat time-limit open-phase protector with two cover control circuits the utility model being provided below in conjunction with the drawings and specific embodiments is elaborated.
As shown in Figure 2, the goat time-limit open-phase protector with two cover control circuits that the utility model provides comprises: current transformer 2, the first controller 3, the first drive circuit 4, the first dynamic circuit 5, the first diode 6, protection relay 7, the second diode 8, the second dynamic circuit 9, the second drive circuit 10, second controller 11, second switch power supply 12, the first Switching Power Supply 13, second source transformer 14, the first power transformer 15 and instruction and warning circuit 16; Wherein: the first drive circuit 4, the first dynamic circuit 5, the first diode 6, the first Switching Power Supply 13 and the first power transformer 15 form first control circuit, the second diode 8, the second dynamic circuit 9, the second drive circuit 10, second controller 1, second switch power supply 12 and second source transformer 14 form second control circuit, and two control circuits have identical internal structure and effect; First control circuit and second control circuit and current transformer 2 and instruction and the common composition of warning circuit 16 double loop control circuit, protection relay 7 is output action relay;
Current transformer 2 is threephase current transformer, and its A phase input is connected mutually with power supply A, and output is connected with second control circuit with first control circuit respectively;
The first controller 3 in first control circuit is the controller circuitry taking microcontroller as core, its three inputs are connected with the three-phase output end of current transformer 2 respectively, and two outputs are connected with warning circuit 16 with instruction with the first drive circuit 4 respectively; The first controller 3 also interconnects with second controller 11;
The first drive circuit 4 is output driving circuit, and an one input is connected with the A phase output terminal of current transformer 2, and output is connected with the first dynamic circuit 5;
The first dynamic circuit 5 is output control circuit, and an one output is connected with the anode of the first diode 6, and another output is connected with the second dynamic circuit 9;
The working power that the first Switching Power Supply 13 is first control circuit, its input is connected with the first power transformer 15, and output is connected with the first dynamic circuit 5 with the first controller 3 respectively;
The power transformer that the first power transformer 15 is first control circuit, two input is connected with the outlet of C phase with the B phase outlet of three phase mains respectively;
The first diode 6 is output isolating device, and negative electrode is connected with the second diode 8 negative electrodes;
Three inputs of the second controller 11 in second control circuit are connected with the three-phase output end of current transformer 2 respectively, and two outputs are connected with warning circuit 16 with instruction with the second drive circuit 10 respectively;
An input of the second drive circuit 10 is connected with the B phase output terminal of current transformer 2, and output is connected with the second dynamic circuit 9;
An output of the second dynamic circuit 9 is connected with the anode of the second diode 8, and another output is connected with the first dynamic circuit 5;
The working power that second switch power supply 12 is second control circuit, its input is connected with second source transformer 14, and output is connected with the second dynamic circuit 9 with second controller 11 respectively;
The power transformer that second source transformer 14 is second control circuit, two input is connected with the outlet of B phase with the A phase outlet of three phase mains respectively;
Instruction is with warning circuit 16 for showing and alarm output circuit, and it is connected with second controller 11 with the first controller 3 respectively;
Protection relay 7 is actuation of an alarm output relay, and its one end is connected with the negative electrode of the second diode 9 with the first diode 6 simultaneously, and the output that the other end and the first dynamic circuit 5 and the second dynamic circuit 9 are existed side by side after connection joins.
The course of work and the operation principle of the goat time-limit open-phase protector of what the utility model provided have two cover control circuits are as follows:
A, B, C three phase mains are after the first power transformer 15, second source transformer 14 and the first Switching Power Supply 13, second switch power supply 12; for the each several part in first control circuit and second control circuit provides power supply; this part power supply is taken from A, B, C three-phase voltage; be not subject to the impact of goat operating current; output voltage stabilization is reliable, can guarantee protection relay 7 action requests.
In the time that the control relay in goat on off control loop picks up, goat starts action, A, B, C three-phase current produce induced voltage by current transformer 2, deliver to the first controller 3 and second controller 11, the first controller 3 and second controller 11 have judged whether that open phase fault occurs: if there is open phase fault, drive instruction and warning circuit 16 to move, externally report to the police and carry out corresponding faulty indication; If normal, the first controller 3 and second controller 11 output driving respectively to the first drive circuits 4 and the second drive circuit drive 10 circuit; The voltage source that A, B, C three-phase current produce provides power supply for the first drive circuit 4 and the second drive circuit 10 circuit; meet the service conditions of the first drive circuit 4 and the second drive circuit 10 circuit; the first drive circuit 4 and the second drive circuit 10 circuit drive respectively the first dynamic circuit 5 and the second dynamic circuit 9 to produce direct voltage output; drive protection relay 7 excitations to pick up; provide " output has electricity " index signal simultaneously, represent working properly.
Fig. 3-Fig. 5 shows the schematic diagram of the goat time-limit open-phase protector with two cover control circuits that the utility model provides.
The goat time-limit open-phase protector of what the utility model provided have two cover control circuits by the output of two cover control circuits by the first diode 6 and the second diode 8 and to together with, realize two cover control circuits and export and use.In the time that protector inside has a device to break down; defective device place circuit cannot normally be exported; another circuit still can normally be worked; not affected by faulty circuit; protector continues output normal voltage; the first controller 3 or second controller 11 are controlled protection relay simultaneously, realize external warning function.
In the time that output voltage is less than 18.5V ± 1.5V, the first controller 3 and/or second controller 11 collect under-voltage signal, and the first controller 3 and/or second controller 11 drive instruction and warning circuit 16 to move, and externally report to the police and carry out corresponding faulty indication.In the time occurring to squeeze trouble fault; goat exceedes the set point of 13 or 30 seconds operate time; the first controller 3 and/or second controller 11 timing exceed the upper limit; the first controller 3 and/or second controller 11 stop driving dynamic circuit immediately; making output voltage is that zero, BHJ loss of excitation falls, and the first controller 3 and/or second controller 11 drive instruction and warning circuit 16 to move; external alarm is also carried out corresponding faulty indication, realizes protection in limited time.
In the time that goat does not move, three-phase current is zero, and the voltage source that three-phase current produces is zero, even if the first controller 3 and/or second controller 11 are exported driving mistakenly, track switch protector also can keep correct output state, is output as zero.
The first controller 3 and 11 moment of second controller communicate, and examine mutually, and in the time that one of them controller breaks down, another controller carries out alarm, can find in time failure problems.
Claims (1)
1. one kind has the goat time-limit open-phase protector of two cover control circuits, it is characterized in that: it comprises: current transformer (2), the first controller (3), the first drive circuit (4), the first dynamic circuit (5), the first diode (6), protection relay (7), the second diode (8), the second dynamic circuit (9), the second drive circuit (10), second controller (11), second switch power supply (12), the first Switching Power Supply (13), second source transformer (14), the first power transformer (15) and instruction and warning circuit (16), wherein: the first drive circuit (4), the first dynamic circuit (5), the first diode (6), the first Switching Power Supply (13) and the first power transformer (15) composition first control circuit, the second diode (8), the second dynamic circuit (9), the second drive circuit (10), second controller (1), second switch power supply (12) and second source transformer (14) form second control circuit, and two control circuits have identical internal structure and effect, first control circuit and second control circuit and current transformer (2) and instruction and warning circuit (16) form double loop control circuit jointly, and protection relay (7) is output action relay,
Current transformer (2) is threephase current transformer, and its A phase input is connected mutually with power supply A, and output is connected with second control circuit with first control circuit respectively;
The first controller (3) in first control circuit is the controller circuitry taking microcontroller as core, its three inputs are connected with the three-phase output end of current transformer (2) respectively, and two outputs are connected with warning circuit (16) with instruction with the first drive circuit (4) respectively; The first controller (3) also interconnects with second controller (11);
The first drive circuit (4) is output driving circuit, and an one input is connected with the A phase output terminal of current transformer (2), and output is connected with the first dynamic circuit (5);
The first dynamic circuit (5) is output control circuit, and an one output is connected with the anode of the first diode (6), and another output is connected with the second dynamic circuit (9);
The working power that the first Switching Power Supply (13) is first control circuit, its input is connected with the first power transformer (15), and output is connected with the first dynamic circuit (5) with the first controller (3) respectively;
The power transformer that the first power transformer (15) is first control circuit, two input is connected with the outlet of C phase with the B phase outlet of three phase mains respectively;
The first diode (6) is output isolating device, and negative electrode is connected with the second diode (8) negative electrode;
Three inputs of the second controller (11) in second control circuit are connected with the three-phase output end of current transformer (2) respectively, and two outputs are connected with warning circuit (16) with instruction with the second drive circuit (10) respectively;
An input of the second drive circuit (10) is connected with the B phase output terminal of current transformer (2), and output is connected with the second dynamic circuit (9);
An output of the second dynamic circuit (9) is connected with the anode of the second diode (8), and another output is connected with the first dynamic circuit (5);
The working power that second switch power supply (12) is second control circuit, its input is connected with second source transformer (14), and output is connected with the second dynamic circuit (9) with second controller (11) respectively;
The power transformer that second source transformer (14) is second control circuit, two input is connected with the outlet of B phase with the A phase outlet of three phase mains respectively;
Instruction is with warning circuit (16) for showing and alarm output circuit, and it is connected with second controller (11) with the first controller (3) respectively;
Protection relay (7) is actuation of an alarm output relay, and its one end is connected with the negative electrode of the second diode (9) with the first diode (6) simultaneously, and the output that the other end and the first dynamic circuit (5) and the second dynamic circuit (9) are existed side by side after connection joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101703.9U CN203747385U (en) | 2014-03-07 | 2014-03-07 | Switch machine time-limited open-phase protector with two sets of control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101703.9U CN203747385U (en) | 2014-03-07 | 2014-03-07 | Switch machine time-limited open-phase protector with two sets of control circuit |
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| Publication Number | Publication Date |
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| CN203747385U true CN203747385U (en) | 2014-07-30 |
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| CN201420101703.9U Expired - Lifetime CN203747385U (en) | 2014-03-07 | 2014-03-07 | Switch machine time-limited open-phase protector with two sets of control circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660237A (en) * | 2015-03-13 | 2015-05-27 | 刘友仁 | One-out-three load transfer switch module |
| CN105896473A (en) * | 2016-06-03 | 2016-08-24 | 柳州辰天科技有限责任公司 | Open-phase protection device having a function of multi-redundancy intelligent carried charge display and control method of open-phase protection device |
| CN108711931A (en) * | 2018-06-25 | 2018-10-26 | 柳州辰天科技有限责任公司 | A kind of three-phase alternating current electric rotating rut machine phase failure protector of controllable composite power supply |
-
2014
- 2014-03-07 CN CN201420101703.9U patent/CN203747385U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660237A (en) * | 2015-03-13 | 2015-05-27 | 刘友仁 | One-out-three load transfer switch module |
| CN104660237B (en) * | 2015-03-13 | 2017-07-04 | 刘友仁 | A kind of one-out-three load switch module |
| CN105896473A (en) * | 2016-06-03 | 2016-08-24 | 柳州辰天科技有限责任公司 | Open-phase protection device having a function of multi-redundancy intelligent carried charge display and control method of open-phase protection device |
| CN105896473B (en) * | 2016-06-03 | 2018-04-17 | 柳州辰天科技有限责任公司 | The open phase protection and its control method that multiple redundancy Intelligent live amount is shown |
| CN108711931A (en) * | 2018-06-25 | 2018-10-26 | 柳州辰天科技有限责任公司 | A kind of three-phase alternating current electric rotating rut machine phase failure protector of controllable composite power supply |
| CN108711931B (en) * | 2018-06-25 | 2023-08-18 | 柳州辰天科技有限责任公司 | Controllable composite power supply three-phase alternating current electric switch machine phase failure protector |
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Granted publication date: 20140730 |