CN103973295A - Signal isolation distribution device for analog quantity of nuclear power station - Google Patents
Signal isolation distribution device for analog quantity of nuclear power station Download PDFInfo
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- CN103973295A CN103973295A CN201410203810.7A CN201410203810A CN103973295A CN 103973295 A CN103973295 A CN 103973295A CN 201410203810 A CN201410203810 A CN 201410203810A CN 103973295 A CN103973295 A CN 103973295A
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- 238000002955 isolation Methods 0.000 title claims abstract description 25
- 238000004804 winding Methods 0.000 claims abstract description 29
- 230000005669 field effect Effects 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000004088 simulation Methods 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 7
- 230000001629 suppression Effects 0.000 claims description 7
- 230000001052 transient effect Effects 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
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Abstract
The invention discloses a signal isolation distribution device for the analog quantity of a nuclear power station, and relates to the technical field of electrical signal processing. The signal isolation distribution device for the analog quantity of the nuclear power station achieves the purposes of increasing the signal transmission distance and improving the capability for resisting electromagnetic interference. The signal isolation distribution device for the analog quantity of the nuclear power station comprises a signal transformation unit, an operational amplifier, a field-effect tube, a power module and multiple isolation transformers. Analog quantity signals are transmitted to the output end of the power module by being sequentially connected with all the primary windings of all the isolation transformers in series after passing through the signal transformation unit, the operational amplifier and the field-effect tube, the secondary line winding of each isolation transformer is connected with a signal distribution circuit, an output side filter inductor and an output side filter capacitor are connected in each signal distribution circuit, the output side positive end and the output side negative end of each signal distribution circuit form a shunt signal output port, and all the signal distribution circuit are in parallel connection. The signal isolation distribution device for the analog quantity of the nuclear power station is especially suitable for processing of the analog quantity signals of the nuclear power station.
Description
Technical field
The present invention relates to Electric signal processing technology, particularly relate to a kind of technology of Nuclear Power Plant Simulation amount signal isolation distributor.
Background technology
In all kinds of power stations, often single channel analog signals need to be outputed to multiple relevant devices, traditional analog signals processing mode is that analog signals is carried out to electromagnetic isolation point multichannel output.
Power supply output unit and the signal Isolation input unit of existing analog signals isolation distributor are arranged in parallel, and signal is easily decayed, and has the shortcoming that signal transmission distance is short and anti-electromagnetic interference capability is poor.
Summary of the invention
For the defect existing in above-mentioned prior art, technical problem to be solved by this invention is to provide a kind of long distance of signal transmission, and the strong Nuclear Power Plant Simulation amount signal isolation distributor of anti-electromagnetic interference capability.
In order to solve the problems of the technologies described above, a kind of Nuclear Power Plant Simulation amount signal isolation distributor provided by the present invention, is characterized in that: comprise signal conversion unit, operational amplifier, field effect transistor, power module, and multiple isolating transformer;
Described signal conversion unit comprises prime filter circuit, rear class the first filter circuit, rear class the second filter circuit;
The input of described prime filter circuit is received analog signals source, and is connected to data side fuse at the input of prime filter circuit, and the output of prime filter circuit is connected to data side Transient Suppression Diode;
The input of described rear class the first filter circuit is received the output of prime filter circuit, and the output head anode of rear class the first filter circuit is received respectively grid, the drain electrode of field effect transistor, the negative pole of output end ground connection of rear class the first filter circuit;
The input of described rear class the second filter circuit is received the output of prime filter circuit through a transfer resistance, the output head anode of rear class the second filter circuit is received the normal phase input end of operational amplifier, the negative pole of output end ground connection of rear class the second filter circuit;
The output of described operational amplifier is received respectively grid, the drain electrode of field effect transistor, the source electrode of self is received in the drain electrode of field effect transistor through a slide rheostat, the source electrode of field effect transistor is connected in series the former limit winding of each isolating transformer successively to the output of power module, each isolating transformer is all connected to a voltage stabilizing didoe between winding two ends, former limit, and each isolating transformer is all respectively connected to an input side filter inductance at winding two ends, former limit;
The secondary winding of each isolating transformer respectively connects a signal dispensing loop, is all connected to outlet side filter inductance and output survey filter capacitor in every bars dispensing loop, and the outlet side positive and negative terminal of each signal dispensing loop forms a shunting sign output port.
Further, described power module comprises rectifier bridge, power transformer;
The input of described rectifier bridge is received external power source through a mains side fuse, the output of rectifier bridge is received the former limit winding of power transformer through the former limit of a mains side filter circuit, and be connected to a mains side Transient Suppression Diode at the output of rectifier bridge, the secondary winding of power transformer connects a mains side secondary filter circuit, and the output of this mains side secondary filter circuit forms the output of power module.
Nuclear Power Plant Simulation amount signal isolation distributor provided by the invention, the former limit of each isolating transformer forms signal Isolation input part, power module is connected with the former limit of each isolating transformer, make the signal of Isolation input side be not easy decay, its signal transmission distance is relatively far away, and anti-electromagnetic interference capability is also stronger.
Brief description of the drawings
Fig. 1 is the circuit diagram of the Nuclear Power Plant Simulation amount signal isolation distributor of the embodiment of the present invention.
Embodiment
Below in conjunction with brief description of the drawings, embodiments of the invention are described in further detail, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof, all should list protection scope of the present invention in.
As shown in Figure 1, a kind of Nuclear Power Plant Simulation amount signal isolation distributor that the embodiment of the present invention provides, it is characterized in that: comprise signal conversion unit, operational amplifier N1, field effect transistor V13, power module U1, and four isolating transformer T1, T2, T3, T4;
Described signal conversion unit comprises prime filter circuit, rear class the first filter circuit, rear class the second filter circuit, and rear class the first filter circuit is wherein for electric current output, and rear class the second filter circuit is for Voltage-output;
Described prime filter circuit is made up of four filter capacitor C1, C2, C3, C4 and two filter resistance R1, R2, input Sin+, the Sin-of prime filter circuit receive analog signals source, and be connected to overcurrent signal side fuse F1, F2 at the input of prime filter circuit, the output of prime filter circuit is connected to overvoltage signal side Transient Suppression Diode V1, and the output of prime filter circuit is provided with current monitoring port x 1 and voltage monitoring port x 2;
Described rear class the first filter circuit is made up of four filter capacitor C5, C6, C7, C8 and two filter resistance R4, R5, the input of rear class the first filter circuit is received the output of prime filter circuit, the output head anode I_OUT+ of rear class the first filter circuit receives respectively grid, the drain electrode of field effect transistor V13, the negative pole of output end I_OUT-ground connection of rear class the first filter circuit;
Described rear class the second filter circuit is made up of four filter capacitor C9, C10, C11, C12 and two filter resistance R6, R7, the input of rear class the second filter circuit is received the output of prime filter circuit through a transfer resistance R3, the output head anode V_OUT+ of rear class the second filter circuit receives the normal phase input end of operational amplifier N1, the negative pole of output end V_OUT-ground connection of rear class the second filter circuit, operational amplifier N1 output is received the inverting input of self through a feedback diode V12;
The output of described operational amplifier N1 is received respectively grid, the drain electrode of field effect transistor V13, the drain electrode of field effect transistor V13 is received the source electrode of self through a slide rheostat R11, and the source electrode of field effect transistor V13 is connected in series the former limit winding of each isolating transformer successively to the output of power module;
Isolating transformer T1 is connected to a voltage stabilizing didoe V8 between winding two ends, former limit, and isolating transformer T1 is respectively connected to an input side filter inductance (L2, L4) at winding two ends, former limit, the secondary winding of isolating transformer T1 connects a signal dispensing loop, in this signal dispensing loop, be connected to outlet side filter inductance L3 and outlet side filter capacitor C20, outlet side positive and negative terminal Sout1+, the Sout1-of this signal dispensing loop form first shunting sign output port;
Isolating transformer T2 is connected to a voltage stabilizing didoe V9 between winding two ends, former limit, and isolating transformer T2 is respectively connected to an input side filter inductance (L5, L7) at winding two ends, former limit, the secondary winding of isolating transformer T2 connects a signal dispensing loop, in this signal dispensing loop, be connected to outlet side filter inductance L6 and outlet side filter capacitor C21, outlet side positive and negative terminal Sout2+, the Sout2-of this signal dispensing loop forms second shunting sign output port;
Isolating transformer T3 is connected to a voltage stabilizing didoe V10 between winding two ends, former limit, and isolating transformer T3 is respectively connected to an input side filter inductance (L8, L10) at winding two ends, former limit, the secondary winding of isolating transformer T3 connects a signal dispensing loop, in this signal dispensing loop, be connected to outlet side filter inductance L9 and outlet side filter capacitor C22, outlet side positive and negative terminal Sout3+, the Sout3-of this signal dispensing loop forms the 3rd shunting sign output port;
Isolating transformer T4 is connected to a voltage stabilizing didoe V11 between winding two ends, former limit, and isolating transformer T4 is respectively connected to an input side filter inductance (L11, L13) at winding two ends, former limit, the secondary winding of isolating transformer T4 connects a signal dispensing loop, in this signal dispensing loop, be connected to outlet side filter inductance L12 and outlet side filter capacitor C23, outlet side positive and negative terminal Sout4+, the Sout4-of this signal dispensing loop forms the 4th shunting sign output port.
In the embodiment of the present invention, described power module comprises rectifier bridge, power transformer T5;
Described rectifier bridge is by four rectifier diode V3, V4, V5, V6 forms, the input of rectifier bridge is received 24V external power source through a mains side fuse F3, the output of rectifier bridge is via filter resistance R9, the former limit of the mains side filter circuit of filter capacitor C14 composition is received the former limit winding of power transformer T5, and be connected to a mains side Transient Suppression Diode V7 at the output of rectifier bridge, the secondary winding of power transformer T5 connects a mains side secondary filter circuit, this mains side secondary filter circuit is by a filter resistance R10 and two filter capacitor C18, C19 composition, the output of mains side secondary filter circuit forms the output of power module, mains side fuse F3 plays overvoltage and overcurrent protection.
In other embodiment of the present invention, the quantity of described isolating transformer can be also two, more than three or four, each filter circuit in described signal conversion unit and power module can adopt existing other filter circuit that can realize identical function to substitute, and the rectifier bridge in described power module also can adopt existing other commutating circuit that can realize identical function to substitute.
The embodiment of the present invention is for being converted to multi-analog output signal by the single channel analog input signal of nuclear power station, and its operation principle is as follows:
The single channel analog input signal of nuclear power station is input to the former limit of each isolating transformer by signal conversion unit, realize electromagnetic isolation by each isolating transformer, thereby weed out the clutter producing because of interference in input signal, make signal return to perfect condition, the regenerated signal of each isolating transformer secondary is respectively by four bars dispensing loop outputs, four bars dispensing loop are separate, when short circuit or open circuit fault appear in any road wherein, do not affect the normal operation on other three tunnels;
The voltage stabilizing didoe V8-V11 of the former avris of each isolating transformer plays overvoltage protection effect to being input to the signal of each isolating transformer, and the input side filter inductance L2 of the former avris of each isolating transformer, L4, L5, L7, L8, L10, L11, L13 play inhibitory action to high-frequency current clutter;
In signal conversion unit time, by two data side fuse F1, F2 realizes overcurrent protection to analog input signal, by data side Transient Suppression Diode, V1 realizes overvoltage protection to analog input signal, analog input signal first carries out prime filtering by prime filter circuit, again by rear class first, the second filter circuit carries out respectively exporting after rear class filtering, four filter capacitor C1 in prime filter circuit, C2, C3, C4 and rear class first, filter capacitor C5-C12 in the second filter circuit plays respectively the effect that common and different mode disturbs that suppresses, transfer resistance R3 and operational amplifier N1 are for being converted to voltage signal by current signal, slide rheostat R11 is for fine-adjusting current, magnitude of voltage, play compensation and role of correcting, field effect transistor V13 is used for driving each isolating transformer,
The embodiment of the present invention has high-isolating, many output channels, high-precision signal, response fast, the feature that antijamming capability is strong, isolation voltage reaches 4KV AC, and power supply and signal I/O, signal input and signal output isolation, between many signal output channels, isolate, four passage outputs of a passage input, analog signals precision≤± 2 ‰, can be applicable in nuclear power station instrument control system, is placed in the outer mild environment of containment.
Claims (2)
1. a Nuclear Power Plant Simulation amount signal isolation distributor, is characterized in that: comprise signal conversion unit, operational amplifier, field effect transistor, power module, and multiple isolating transformer;
Described signal conversion unit comprises prime filter circuit, rear class the first filter circuit, rear class the second filter circuit;
The input of described prime filter circuit is received analog signals source, and is connected to data side fuse at the input of prime filter circuit, and the output of prime filter circuit is connected to data side Transient Suppression Diode;
The input of described rear class the first filter circuit is received the output of prime filter circuit, and the output head anode of rear class the first filter circuit is received respectively grid, the drain electrode of field effect transistor, the negative pole of output end ground connection of rear class the first filter circuit;
The input of described rear class the second filter circuit is received the output of prime filter circuit through a transfer resistance, the output head anode of rear class the second filter circuit is received the normal phase input end of operational amplifier, the negative pole of output end ground connection of rear class the second filter circuit;
The output of described operational amplifier is received respectively grid, the drain electrode of field effect transistor, the source electrode of self is received in the drain electrode of field effect transistor through a slide rheostat, the source electrode of field effect transistor is connected in series the former limit winding of each isolating transformer successively to the output of power module, each isolating transformer is all connected to a voltage stabilizing didoe between winding two ends, former limit, and each isolating transformer is all respectively connected to an input side filter inductance at winding two ends, former limit;
The secondary winding of each isolating transformer respectively connects a signal dispensing loop, is all connected to outlet side filter inductance and output survey filter capacitor in every bars dispensing loop, and the outlet side positive and negative terminal of each signal dispensing loop forms a shunting sign output port.
2. Nuclear Power Plant Simulation amount signal isolation distributor according to claim 1, is characterized in that: described power module comprises rectifier bridge, power transformer;
The input of described rectifier bridge is received external power source through a mains side fuse, the output of rectifier bridge is received the former limit winding of power transformer through the former limit of a mains side filter circuit, and be connected to a mains side Transient Suppression Diode at the output of rectifier bridge, the secondary winding of power transformer connects a mains side secondary filter circuit, and the output of this mains side secondary filter circuit forms the output of power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203810.7A CN103973295B (en) | 2014-05-15 | 2014-05-15 | A kind of Nuclear Power Plant Simulation amount signal isolation distributor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203810.7A CN103973295B (en) | 2014-05-15 | 2014-05-15 | A kind of Nuclear Power Plant Simulation amount signal isolation distributor |
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| Publication Number | Publication Date |
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| CN103973295A true CN103973295A (en) | 2014-08-06 |
| CN103973295B CN103973295B (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410203810.7A Active CN103973295B (en) | 2014-05-15 | 2014-05-15 | A kind of Nuclear Power Plant Simulation amount signal isolation distributor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227177A (en) * | 2014-06-30 | 2016-01-06 | 硅谷实验室公司 | Comprise the isolator of two-way adjuster |
| CN108832714A (en) * | 2016-07-27 | 2018-11-16 | 国网江苏省电力公司常州供电公司 | An active distribution network intelligent terminal battery isolation monitoring device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103325A (en) * | 1977-03-18 | 1978-07-25 | Sperry Rand Corporation | Aircraft power and phase converter |
| CN1729611A (en) * | 2002-12-27 | 2006-02-01 | 索尼株式会社 | Switching power supply circuit |
| CN2852513Y (en) * | 2005-07-11 | 2006-12-27 | 中兴通讯股份有限公司 | Isolated switch power supply |
| CN102291010A (en) * | 2011-08-08 | 2011-12-21 | 山东蓝天电能科技有限公司 | Series bus type multi-DC output high voltage high frequency isolated power supply |
| CN203851129U (en) * | 2014-05-15 | 2014-09-24 | 国核自仪系统工程有限公司 | Nuclear power station analog quantity signal isolation and distribution device |
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2014
- 2014-05-15 CN CN201410203810.7A patent/CN103973295B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103325A (en) * | 1977-03-18 | 1978-07-25 | Sperry Rand Corporation | Aircraft power and phase converter |
| CN1729611A (en) * | 2002-12-27 | 2006-02-01 | 索尼株式会社 | Switching power supply circuit |
| CN2852513Y (en) * | 2005-07-11 | 2006-12-27 | 中兴通讯股份有限公司 | Isolated switch power supply |
| CN102291010A (en) * | 2011-08-08 | 2011-12-21 | 山东蓝天电能科技有限公司 | Series bus type multi-DC output high voltage high frequency isolated power supply |
| CN203851129U (en) * | 2014-05-15 | 2014-09-24 | 国核自仪系统工程有限公司 | Nuclear power station analog quantity signal isolation and distribution device |
Non-Patent Citations (1)
| Title |
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| 韩敏等: "电流控制型多路输出开关电源设计与实现", 《航空计算技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227177A (en) * | 2014-06-30 | 2016-01-06 | 硅谷实验室公司 | Comprise the isolator of two-way adjuster |
| CN108832714A (en) * | 2016-07-27 | 2018-11-16 | 国网江苏省电力公司常州供电公司 | An active distribution network intelligent terminal battery isolation monitoring device |
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| CN103973295B (en) | 2019-01-04 |
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Address after: 200241 No. 428 East Jiangchuan Road, Shanghai, Minhang District Patentee after: STATE NUCLEAR POWER AUTOMATION SYSTEM ENGINEERING Co.,Ltd. Address before: 200241. A2036, building B, building 555, Dongchuan Road, Minhang District, Shanghai Patentee before: STATE NUCLEAR POWER AUTOMATION SYSTEM ENGINEERING Co.,Ltd. |