CN102510227B - Method for debugging electrical equipment, valves and instrumental equipment in installation process of nuclear power station - Google Patents
Method for debugging electrical equipment, valves and instrumental equipment in installation process of nuclear power station Download PDFInfo
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- CN102510227B CN102510227B CN201110325276.3A CN201110325276A CN102510227B CN 102510227 B CN102510227 B CN 102510227B CN 201110325276 A CN201110325276 A CN 201110325276A CN 102510227 B CN102510227 B CN 102510227B
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Abstract
The invention relates to installation of a nuclear power station, aiming at solving the problems that the existing method for debugging electrical and instrumental equipment has high debugging cost and is inconvenient. The invention provides a method for debugging electrical equipment, valves and instrumental equipment in the installation process of a nuclear power station, comprising the following steps of: firstly, connecting the output end of an AC (alternating current) power supply with the input end of a voltage regulating element, connecting the output end of the voltage regulating element with the input end of a bridge rectifier circuit, connecting the output end of the bridge rectifier circuit with the input end of a filter circuit, and connecting the output end of the filter circuit with the input end of equipment to be debugged; then connecting the circuit and adjusting the voltage regulating element; starting the equipment to be debugged, enabling the equipment to be in an operating state continuously for a period of time, checking whether the equipment can normally operate, if so, turning off the equipment to be debugged and cutting off the power supply; if not, turning off the equipment to be debugged, adjusting the related components, restarting the equipment to be debugged, repeating the operation until the equipment can normally operate; and if the equipment can not normally operate after repeating the operation multiple times, rejecting the equipment. The debugging method has low cost and is convenient.
Description
Technical field
The present invention relates to the installation of nuclear power station, particularly relate in nuclear power station safety process of assembling, the method for debugging electric equipment, valve arrangement and instrumentation.
Background technology
Because the electric equipment in nuclear power station is upgraded along with the continuous upgrading of technology, for improving fail safe, in nuclear power construction process, to electric equipment, detecting instrument, valve arrangement and electric adjustment must be carried out as monomer electric components such as contactor, relay, voltage transmitters.After above-mentioned debugging completes, DC power supply also to be utilized to carry out analogue test to the electrical system of installation, then just can put into operation.
At present, those skilled in the art usually direct output by the DC power supply purchased from the market such as storage battery is connected with the input of equipment to be debugged, and the output voltage of storage battery equals the nominal input voltage of equipment to be debugged, start equipment to be debugged, make it in running order and continue for some time, and check whether equipment to be debugged can normally work, if can, close debugged apparatus and cut off the electricity supply; If can not, close debugged apparatus, and regulate the associated components on debugged apparatus, and then start debugged apparatus, repetitive operation, until debugged apparatus can normally work, if repeatedly still cisco unity malfunction, then give up this equipment.Because in nuclear power projects, electric equipment, detecting instrument and monomer electric component quantity are more, its function and electrical characteristic are multifarious especially, so, when debugging, just need the DC power supply purchasing a large amount of different model, with the different equipment to be debugged of satisfied debugging to the different requirements of the power amount needed for input dc power, voltage amount and electric current amount.There is following problem in this adjustment method: first, because the output voltage of storage battery can not regulate according to commissioning requirements, cannot be that the equipment to be debugged of unconventional voltage and element are debugged to some input voltages; Secondly, because the electricity of storage battery is limited, can not use continuously, must often charge to it, carry out satisfied debugging demand to ensure sufficient electricity, like this, just cause debugging cycle to extend, and then cause claim for eot; Finally, because battery weight is comparatively large, mobile difficulty, inconvenience transfer debugging place.
In order to meet commissioning requirements input voltage being had to particular/special requirement equipment and element, the cabinet type DC power system that those skilled in the art adopts output voltage adjustable is usually powered to treat commissioning device, then equipment to be debugged is started, make it in running order and continue for some time, and check whether equipment to be debugged can normally work, if can, close equipment to be debugged and cut off the electricity supply; If can not, close debugged apparatus, and regulate the associated components on debugged apparatus, and then start equipment to be debugged, repetitive operation, until debugged apparatus can normally work, if repeatedly still cisco unity malfunction, then give up this equipment.But, the cabinet type DC power system on market, expensive, purchase one and need spend tens thousand of unit, and the adjustable extent of output voltage is little; Frequent use or frequent regulation output voltage, also easily cause cabinet type DC power system to break down, maintenance cycle is long, and maintenance cost is expensive; Complex structure, difficult in maintenance; Volume is comparatively large, not easily moves, is also not suitable for using in the small space in nuclear power station.
Summary of the invention
When utilizing storage battery or cabinet type DC power system to debug the electric equipment in nuclear power station, valve and instrumentation for solving in prior art, voltage adjustable extent is little, should not frequently use, heavy, mobile inconvenience, maintenance and the problem that maintenance cost is high, debugging cost is high.
The present invention proposes a kind of method of debugging electric equipment, valve and instrumentation in nuclear power station safety process of assembling, first build circuit, the output of AC power is connected with the input of voltage regulation component, the output of described voltage regulation component is connected with the input of bridge rectifier, the output of described bridge rectifier is connected with the input of filter circuit, and the output of described filter circuit is connected with the input of equipment to be debugged;
Then connect circuit and regulate described voltage regulation component, the direct current that described filter circuit output is exported meets the demand of described equipment work to be debugged;
Restart described equipment to be debugged, make described equipment to be debugged in running order and continue for some time, and check whether described equipment to be debugged can normally work, if can, close described equipment to be debugged, and cut off the electricity supply; If can not, judge that whether described equipment to be debugged is adjustable, if non-adjustable, close described equipment to be debugged and cut off the electricity supply; If adjustable, close described equipment to be debugged, and regulate the associated components of described equipment to be debugged, restart described equipment to be debugged, repetitive operation, until described equipment to be debugged can normally work, if repeatedly still cisco unity malfunction, then give up this equipment to be debugged.
The circuit structure that such adjustment method is built is simple, and selected electric component is primary element, be easy to safeguard, cost is low, small volume and less weight, be convenient to shift work-yard, and carried out the direct voltage of regulation output by the ac voltage regulating described bridge rectifier input to input, the adjustable extent of the direct voltage that described filter circuit output exports is large.In addition, the alternating current that AC power provides by this adjustment method is directly changed into direct current and powers to debugged apparatus, when AC power not power-off, need not worry to interrupt debugging when debugging because electricity is not enough.
Preferably, inductor filter circuit selected by described filter circuit, and described inductance is connected with the output of described bridge rectifier.Like this, just can provide comparatively level and smooth and magnitude of voltage galvanic current for described equipment to be debugged.
Preferably, capacitor filter selected by described filter circuit, and described electric capacity is in parallel with the output of described bridge rectifier filter circuit.Like this, the galvanic voltage that described bridge rectifier output exports would not described filter circuit dividing potential drop, and the maximum of the output dc voltage of described filter circuit is increased, and then the adjustable extent of expansion output voltage.
Preferably, the compound filter circuit that described filter circuit selects electric capacity and inductor combination to be formed, and described inductance is connected with the output of described bridge rectifier, described electric capacity is in parallel with the output of described bridge rectifier.
Further, described voltage regulation component can select voltage regulator or slide coil.
Preferably, the voltage 220V of the alternating current of the output output of described AC power, frequency 50Hz.Like this, daily electricity consumption just can be directly adopted to debug to treat commissioning device, convenient and cost is low.
Accompanying drawing explanation
Fig. 1 is the first circuit that the method for debugging electric equipment, valve and instrumentation in nuclear power station safety process of assembling of the present invention adopts;
Fig. 2 is the second circuit that the method for debugging electric equipment, valve and instrumentation in nuclear power station safety process of assembling of the present invention adopts;
Fig. 3 is the third circuit that the method for debugging electric equipment, valve and instrumentation in nuclear power station safety process of assembling of the present invention adopts.
Embodiment
The concrete implementation step of debugging the method for electric equipment, valve arrangement and instrumentation in nuclear power station safety process of assembling of the present invention is as follows: first, build circuit, be connected with the input of voltage regulation component by the output of AC power, the output of voltage regulation component is connected with the input of bridge rectifier, the output of bridge rectifier is connected with the input of filter circuit, and the output of filter circuit is connected with the input of equipment to be debugged.Described AC power can be daily electricity consumption, i.e. the alternating current of 220V (volt) 50Hz (hertz) that uses of nuclear power station job site, the alternating current of also can be rated output voltage be 380V or other values.Then, connect circuit, and regulate voltage regulation component according to the electrical characteristic of equipment to be debugged, the galvanic voltage that filter circuit output is exported meets the demand treated commissioning device and power.Finally start equipment to be debugged, make it in running order and continue for some time, and check whether equipment to be debugged can normally work, if can, close debugged apparatus, and cut off the electricity supply; If can not, close debugged apparatus, and regulate the associated components on debugged apparatus, and then start debugged apparatus, repetitive operation, until debugged apparatus can normally work, if repeatedly still cisco unity malfunction, then give up this equipment to be debugged.Certainly, said method also can be used to carry out down the simulated experiment before power transmission to the electrical system of installation in nuclear power station.Wherein, the direct current converted to by alternating current needed for debugging can adopt following several mode to realize.
As shown in Figure 1, this circuit comprises voltage regulator 1, bridge rectifier 2 and inductor filter circuit 3 to the first circuit that the method for debugging electric equipment, valve and instrumentation in nuclear power station safety process of assembling adopts.Wherein, the input of voltage regulator 1 is used for being connected with the output of AC power, and the output of voltage regulator 1 is connected with the input of bridge rectifier 2, to regulate the magnitude of voltage U of the input AC electricity of bridge rectifier 2
2AC, and then the galvanic magnitude of voltage U regulating it to export
3DC.Filter inductance L is in series with, after bridge rectifier 3 converts alternating current to direct current, to the direct current filtering that conversion is formed, to obtain smoothly and magnitude of voltage U at the output of bridge rectifier 2
3DCgalvanic current.Such circuit structure is simple, is easy to build, and is convenient to safeguard.Electric component in circuit is basic electric component, and cost is low, and small volume and less weight, be easy to carry.Technical staff, after debugging completes, can transfer to other positions easily, again builds circuit to debug other equipment to be debugged.Because this circuit directly converts the alternating current of AC power to direct current, treat commissioning device and power, so, in debug process, as long as AC power not power-off, just always for debugged apparatus is powered, and can there is not the problem of off-capacity in this circuit.
Those skilled in the art can the voltage of alternating current that provides of circuit according to Fig. 1, AC power and the electrical characteristic of frequency and equipment to be debugged, and according to
Wherein, U
3DCfor DC power output voltage, Δ I is current wave momentum, D
maxfor maximum duty cycle, D
minfor minimum duty cycle, T
rfor the transitional processes time, calculate the electric condition that the diode in bridge rectifier 2 and the inductance in inductor filter circuit 3 will meet, select suitable diode and inductance L to build circuit.After the output of inductor filter circuit 3 is connected with the input of equipment to be debugged, voltage regulator 1 and AC power are connected, and regulate voltage regulator 1, the debugging demand of equipment to be debugged is met with the direct current making the output of inductor filter circuit 3 export, and then start equipment to be debugged, it is debugged.
As shown in Figure 2, this circuit comprises voltage regulator 1, bridge rectifier 2 and capacitor filter 4 to the second circuit that the method for debugging electric equipment, valve and instrumentation in nuclear power station safety process of assembling adopts.Wherein, the input of voltage regulator 1 is used for being connected with AC power, and the output of voltage regulator 1 is connected with the input of bridge rectifier 2, makes the alternating current of AC power after voltage regulator 1 pressure regulation, enter bridge rectifier 2, carry out AC/DC (ac/dc) conversion.The output of bridge rectifier 2 is connected with the input of capacitor filter 4, is namely parallel with filter capacitor C at the output of bridge rectifier 2, carries out filtering to the direct current that rectifier obtains, and then obtains the level and smooth and magnitude of voltage galvanic current of voltage.
Before building circuit, those skilled in the art can the voltage of alternating current that provides of circuit according to Fig. 2, AC power and the electrical characteristic of frequency and equipment to be debugged, calculate the electric condition that the diode in bridge rectifier 2 and the electric capacity C in capacitor filter 4 will meet, select suitable diode and electric capacity C to build circuit.The voltage of the alternating current that such as AC power provides is 220V, when frequency is 50Hz, when the galvanic voltage range of output is 0 ~ 110V, the reverse voltage maximum that the diode being used for building bridge rectifier can bear is its withstand voltage, i.e. 110V × 1.414 × 1.1=171.9V (1.1 for restraining oneself coefficient), so diode should select withstand voltage at the diode of more than 172V; Suppose the resistance R of equipment to be debugged
lbe 2000 Ω (ohms), due to
wherein T is power cycle, T=0.02s (second), then C>=15 ~ 25 μ F (microfarad), its withstand voltage is greater than maximum voltage value 110V × 1.414=155.54V that bridge rectifier exports, and in engineering, capacitor has fixing specification, bulky capacitor, load is heavier, the ability of Absorption Current is stronger, and the capacity of this bulky capacitor will be larger, so filter capacitor can be the electric capacity that model is 450V 470 μ F.Because filter capacitor is in parallel with the output of bridge rectifier, so the adjustable extent adopting the output voltage of the circuit of capacitor filtering is that 0V arrives maximum output valve, maximum output voltage is 110V × 1.2=132V (output voltage of capacitor filtering formula bridge rectifier equals 1.2 times of input ac voltage effective value), and namely the adjustable extent of output voltage is 0 to 132V.
As shown in Figure 3, this circuit comprises voltage regulator 1, bridge rectifier 2 and compound filter circuit 5 to the third circuit that the method for debugging electric equipment, valve and instrumentation in nuclear power station safety process of assembling adopts.Wherein, the input of voltage regulator 1 is used for being connected with AC power, and the output of voltage regulator 1 is connected with the input of bridge rectifier 2, and the output of bridge rectifier 2 is connected with the input of compound filter circuit 5.Compound filter circuit 5 is formed by inductance L and electric capacity C, and wherein inductance L is connected with the output of bridge rectifier 2, and electric capacity C is in parallel with the output of bridge rectifier 2.The alternating current that AC power provides, after voltage regulator 1 pressure regulation, enters bridge type rectification circuit 2 and carries out AC/DC conversion, and form direct current, this direct current again through the filtering of compound filter circuit 5, and then obtains the direct current of smooth steady.
Those skilled in the art can the voltage of alternating current that provides of circuit according to Fig. 3, AC power and the electrical characteristic of frequency and equipment to be debugged, calculate the electric condition that in diode in bridge rectifier 2 and compound filter circuit 5, inductance L and electric capacity C will meet, select suitable diode, inductance and electric capacity to build circuit.After the output of compound filter circuit 5 is connected with the input of equipment to be debugged, connect AC power, and regulate voltage regulator, meet the debugging demand of equipment to be debugged with the direct current making the output of compound filter circuit 5 export, then start equipment to be debugged and it is debugged.Owing to adopting compound filter circuit to carry out filtering to the direct current that bridge rectifier rectifier obtains, make the galvanic voltage smooth steady more entering equipment to be debugged.
Because the electric component in above-mentioned several circuit is basic electric component, and quantity is little, and total cost is less than 200 yuan, and cost is low.
Those skilled in the art is known, according to above-mentioned thinking, when the direct current obtained rectifier carries out filtering, can also adopt other filter circuits; Same, slide coil also can be adopted to be used as voltage regulation component the voltage that the input of bridge rectifier inputs is regulated.
Claims (5)
1. debug a method for electric equipment, valve and instrumentation in nuclear power station safety process of assembling, it is characterized in that,
First build circuit, the output of AC power is connected with the input of voltage regulation component, the output of described voltage regulation component is connected with the input of bridge rectifier, the output of described bridge rectifier is connected with the input of filter circuit, and the output of described filter circuit is connected with the input of equipment to be debugged;
Then connect circuit and regulate described voltage regulation component, the direct current that described filter circuit output is exported meets the demand of described equipment work to be debugged;
Restart described equipment to be debugged, make described equipment to be debugged in running order and continue for some time, and check whether described equipment to be debugged can normally work, if can, close described equipment to be debugged, and cut off the electricity supply; If can not, close described equipment to be debugged, and regulate the associated components of described equipment to be debugged, restart described equipment to be debugged, repetitive operation, until described equipment to be debugged can normally work, if repeatedly still cisco unity malfunction, then give up this equipment to be debugged;
Described voltage regulation component is voltage regulator or slide coil.
2. debug the method for electric equipment, valve and instrumentation in nuclear power station safety process of assembling according to claim 1, it is characterized in that, inductor filter circuit selected by described filter circuit, and described inductance is connected with the output of described bridge rectifier.
3. debug the method for electric equipment, valve and instrumentation in nuclear power station safety process of assembling according to claim 1, it is characterized in that, capacitor filter selected by described filter circuit, and described electric capacity is in parallel with the output of described bridge rectifier filter circuit.
4. in nuclear power station safety process of assembling according to claim 1, debug the method for electric equipment, valve and instrumentation, it is characterized in that, the compound filter circuit that described filter circuit selects electric capacity and inductor combination to be formed, and described inductance is connected with the output of described bridge rectifier, described electric capacity is in parallel with the output of described bridge rectifier.
5. debug the method for electric equipment, valve and instrumentation in the nuclear power station safety process of assembling according to any one in claim 1-4, it is characterized in that, the voltage 220V of the alternating current of the output output of described AC power, frequency 50Hz.
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| CN201110325276.3A CN102510227B (en) | 2011-10-24 | 2011-10-24 | Method for debugging electrical equipment, valves and instrumental equipment in installation process of nuclear power station |
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| CN201110325276.3A CN102510227B (en) | 2011-10-24 | 2011-10-24 | Method for debugging electrical equipment, valves and instrumental equipment in installation process of nuclear power station |
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| CN102510227B true CN102510227B (en) | 2015-05-20 |
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| CN201383752Y (en) * | 2008-12-25 | 2010-01-13 | 中国铝业股份有限公司 | Dedicated AC/DC power supply device for electrical debugging working field |
| CN101817021A (en) * | 2009-02-26 | 2010-09-01 | 中国二十冶建设有限公司 | Layered and parallel debugging method of automation system of pickling line and tandem cold mill unit |
| EP2264599A2 (en) * | 1997-11-18 | 2010-12-22 | Altera Corporation | Enhanced embedded logic analyzer |
| CN201947188U (en) * | 2010-12-31 | 2011-08-24 | 深圳市君天恒讯科技有限公司 | Power supply of switch |
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2011
- 2011-10-24 CN CN201110325276.3A patent/CN102510227B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2264599A2 (en) * | 1997-11-18 | 2010-12-22 | Altera Corporation | Enhanced embedded logic analyzer |
| CN201383752Y (en) * | 2008-12-25 | 2010-01-13 | 中国铝业股份有限公司 | Dedicated AC/DC power supply device for electrical debugging working field |
| CN101817021A (en) * | 2009-02-26 | 2010-09-01 | 中国二十冶建设有限公司 | Layered and parallel debugging method of automation system of pickling line and tandem cold mill unit |
| CN201947188U (en) * | 2010-12-31 | 2011-08-24 | 深圳市君天恒讯科技有限公司 | Power supply of switch |
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