CN114337245A - Special high-power medium-frequency grid-connected power supply system for uranium concentration centrifugal machine - Google Patents
Special high-power medium-frequency grid-connected power supply system for uranium concentration centrifugal machine Download PDFInfo
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- CN114337245A CN114337245A CN202111672760.3A CN202111672760A CN114337245A CN 114337245 A CN114337245 A CN 114337245A CN 202111672760 A CN202111672760 A CN 202111672760A CN 114337245 A CN114337245 A CN 114337245A
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Abstract
The invention discloses a special high-power medium-frequency grid-connected power supply system for a uranium concentration centrifuge, wherein commercial power is input through an EMI filter, current output from the EMI filter passes through a rectifying circuit, current passing through the rectifying circuit passes through a DC/AC converting circuit, current converted by the DC/AC converting circuit passes through a current output filtering circuit, current output from the current output filtering circuit passes through an output high-low grade converting circuit, and current passing through the output high-low grade converting circuit is output through NFB; the output high-low gear switching circuit is connected with a voltmeter, a frequency meter, a current meter and a power meter, current passing through the voltmeter, the frequency meter, the current meter and the power meter flows through the SIN wave circuit and the PWM circuit, and the current is output to the driving circuit from the PWN output controller and then returns to the DC/AC switching circuit. The invention has the advantages of strong anti-pulse interference capability and maximally avoiding the influence of pulses on a power supply system in the use process.
Description
Technical Field
The invention relates to the technical field of medium-frequency grid-connected power supplies, in particular to a high-power medium-frequency grid-connected power supply system special for a uranium concentration centrifuge.
Background
The centrifugal machine has the characteristics of high vacuum, high rotating speed, strong corrosion, high Mach number, long service life, unrepairable property and the like, the research and development of the centrifugal machine relate to the theory and technical fields of various subjects such as machinery, electricity, mechanics, materials science, aerodynamics, hydromechanics, computer application and the like, and the uranium concentration centrifugal machine technology is a key technology for nuclear fuel production.
The medium frequency power supply is a static frequency conversion device, and converts a three-phase power frequency power supply into a single-phase power supply. Has strong adaptability to various loads and wide application range. The intermediate frequency power supply is developed into a silicon controlled variable frequency power supply from an early intermediate frequency generator set, and is developed and perfected continuously to become a new generation of variable frequency power supply device at present. The medium frequency power supply mainly comprises a rectifier transformer, a silicon controlled rectifier, a fly-wheel diode, an inverter, a direct current reactor for connecting the rectifier and the inverter, and a corresponding control loop and a corresponding protection loop.
The working principle of the intermediate frequency power supply is as follows: a three-phase bridge type fully-controlled rectifying circuit is adopted to rectify alternating current into direct current, the direct current becomes a direct current power supply after being smoothed by an electric reactor, and the direct current is inverted into single-phase intermediate-frequency current with certain frequency through a single-phase inverting bridge. The load consists of an induction coil and a compensation capacitor, and is connected into a parallel resonant circuit.
When the common intermediate frequency grid-connected power supply system is used, the common intermediate frequency grid-connected power supply system is easily interfered by pulses, the anti-interference capability is not strong, and once the common intermediate frequency grid-connected power supply system is interfered, faults are easily caused, and normal use is influenced.
Disclosure of Invention
The invention aims to provide a special high-power medium-frequency grid-connected power supply system for a uranium concentrating centrifuge, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: according to the special high-power medium-frequency grid-connected power supply system for the uranium concentration centrifuge, mains supply is input and passes through an EMI filter, current output from the EMI filter passes through a rectifying circuit, current passing through the rectifying circuit passes through a DC/AC conversion circuit, current converted by the DC/AC conversion circuit passes through a current output filter circuit, current output from the current output filter circuit passes through an output high-low level conversion circuit, and current passing through the output high-low level conversion circuit is output through an NFB;
the output high-low gear switching circuit is connected with a voltmeter, a frequency meter, a current meter and a power meter, current passing through the voltmeter, the frequency meter, the current meter and the power meter flows through the SIN wave circuit and the PWM circuit, and the current is output to the driving circuit from the PWN output controller and then returns to the DC/AC switching circuit.
As a further aspect of the invention, the PWN output controller includes over-current detection, over-temperature detection, FUSE blow detection, and power down detection.
As a further scheme of the invention, the SIN wave circuit is connected with the D/A conversion circuit, the ROM, the programmable circuit and the quartz oscillation circuit in sequence, the current enters the SIN wave circuit through the quartz oscillation circuit, the programmable circuit, the ROM and the D/A conversion circuit in sequence, and the quartz oscillation circuit is connected with the triangular wave circuit.
A high-power medium-frequency grid-connected power supply system special for a uranium concentration centrifuge is characterized in that the system maintenance is as follows:
the meters used were: the system comprises a universal meter, an insulation megger, an inductance capacitance meter, an oscilloscope, a circuit breaker, a three-phase full-wave rectifier, a filter and an inverter;
connecting a three-phase alternating current input;
maintenance of a power supply control system:
the working personnel check the circuit breaker and the control circuit thereof, if the detection result is that the circuit breaker is normally operated and the door panel button and the indicator lamp are normal, the circuit breaker and the control circuit thereof have no problem; if the detection result is that the circuit breaker is abnormal in operation and the door panel button and the indicator lamp are abnormal, the circuit breaker and the control circuit thereof are in failure, and maintenance is carried out;
detection of a rectification circuit:
the system firstly leads water, a main loop is disconnected from the front stage of a filter reactor, a resistive load which is less than or equal to 500 omega and more than or equal to 500W is connected to two output ends of a three-phase full-wave rectifier, after the system is started, a voltmeter indicates that the rectifying circuit is normal in a range from 1.30U 1 to 1.40U 1, and the voltmeter indicates that the rectifying circuit is abnormal outside a range from 1.30U 1 to 1.40U 1, and maintenance is carried out;
inversion and intermediate frequency load detection:
when the power control system and the rectification circuit are normal, the system is connected with the inversion and intermediate frequency loads, if the system cannot be started normally, the wiring of the main circuit board is checked, 114 and 115 are removed, the system is restarted, the fault is relieved when the system is started normally, the main circuit board is replaced when the system cannot be started, or the system cannot be started, and the inversion and intermediate frequency loads are detected one by one to judge the fault.
Compared with the prior art, the invention has the beneficial effects that: the commercial power input passes through the EMI filter, the current output from the EMI filter passes through the rectifying circuit, the current passing through the rectifying circuit passes through the DC/AC converting circuit, the current converted by the DC/AC converting circuit passes through the current output filter circuit, the current output from the current output filter circuit passes through the output high-low level converting circuit, and the current passing through the output high-low level converting circuit is output through the NFB. The anti-pulse interference capability is strong, and the influence of pulses on a power supply system is avoided to the maximum extent in the use process.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown herein, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The embodiment provided by the invention comprises the following steps: according to the special high-power medium-frequency grid-connected power supply system for the uranium concentration centrifuge, mains supply is input and passes through an EMI filter, current output from the EMI filter passes through a rectifying circuit, current passing through the rectifying circuit passes through a DC/AC conversion circuit, current converted by the DC/AC conversion circuit passes through a current output filter circuit, current output from the current output filter circuit passes through an output high-low level conversion circuit, and current passing through the output high-low level conversion circuit is output through an NFB;
the output high-low gear switching circuit is connected with a voltmeter, a frequency meter, a current meter and a power meter, current passing through the voltmeter, the frequency meter, the current meter and the power meter flows through an SIN wave circuit and a PWM circuit, the SIN wave circuit is sequentially connected with a D/A switching circuit, a ROM, a programmable circuit and a quartz oscillation circuit, the current sequentially passes through the quartz oscillation circuit, the programmable circuit, the ROM and the D/A switching circuit and enters the SIN wave circuit, the quartz oscillation circuit is additionally connected with a triangular wave circuit, the current is output from a PWN output controller to a driving circuit and then returns to the DC/AC switching circuit, and the PWN output controller comprises overcurrent detection, over-temperature detection, FUSE fusing detection and power failure detection.
Example 2
The embodiment provided by the invention comprises the following steps: a high-power medium-frequency grid-connected power supply system special for a uranium concentration centrifuge is characterized in that a power supply control system is maintained:
the circuit breaker and the control circuit thereof are input by three-phase alternating current, a worker checks the circuit breaker and the control circuit thereof, if the detection result is that the circuit breaker is normally operated and the door panel button and the indicator lamp are normal, the circuit breaker and the control circuit thereof have no problem; and if the detection result is that the circuit breaker is abnormal in operation and the door panel button and the indicator lamp are abnormal, the circuit breaker and the control circuit thereof are in failure, and maintenance is carried out.
Example 3
The embodiment provided by the invention comprises the following steps: the special high-power intermediate frequency grid-connected power supply system for the uranium concentration centrifuge has the following detection by a rectifying circuit:
the system firstly leads water, is connected with three-phase alternating current input, disconnects the main loop from the front stage of the filter reactor, and connects a resistive load which is less than or equal to 500 omega and more than or equal to 500W to the two output ends of the three-phase full-wave rectifier, after the system is started, the indication of the voltmeter indicates that the rectifying circuit is normal in the interval from 1.30U 1 to 1.40U 1, and the indication of the voltmeter indicates that the rectifying circuit is abnormal outside the interval from 1.30U 1 to 1.40U 1, so that maintenance is carried out.
Example 4
The embodiment provided by the invention comprises the following steps: a high-power medium-frequency grid-connected power supply system special for a uranium concentration centrifuge is characterized in that inversion and medium-frequency load detection are carried out:
and (3) receiving three-phase alternating current input, after a power control system and a rectification circuit are normal, accessing the inversion and intermediate frequency loads to the system, if the system cannot be started normally, checking the wiring of a main circuit board, resetting the system after 114 and 115 are removed, removing the fault when the system is started normally, replacing the main circuit board when the system cannot be started, or else, detecting the inversion and intermediate frequency loads one by one to judge the fault.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. The special high-power intermediate frequency grid-connected power supply system for the uranium concentrating centrifuge is characterized in that: the commercial power input passes through the EMI filter, the current output from the EMI filter passes through the rectifying circuit, the current passing through the rectifying circuit passes through the DC/AC converting circuit, the current converted by the DC/AC converting circuit passes through the current output filter circuit, the current output from the current output filter circuit passes through the output high-low level converting circuit, and the current passing through the output high-low level converting circuit is output through the NFB;
the output high-low gear switching circuit is connected with a voltmeter, a frequency meter, a current meter and a power meter, current passing through the voltmeter, the frequency meter, the current meter and the power meter flows through the SIN wave circuit and the PWM circuit, and the current is output to the driving circuit from the PWN output controller and then returns to the DC/AC switching circuit.
2. The special high-power medium-frequency grid-connected power supply system for the uranium concentrating centrifuge according to claim 1, wherein: the PWN output controller includes overcurrent detection, overtemperature detection, FUSE blow detection, and power-off detection.
3. The special high-power medium-frequency grid-connected power supply system for the uranium concentrating centrifuge according to claim 1, wherein: the SIN wave circuit is connected with the D/A conversion circuit, the ROM, the programmable circuit and the quartz oscillation circuit in sequence, the current enters the SIN wave circuit through the quartz oscillation circuit, the programmable circuit, the ROM and the D/A conversion circuit in sequence, and the quartz oscillation circuit is connected with the triangular wave circuit.
4. The special high-power intermediate frequency grid-connected power supply system for the uranium concentrating centrifuge is characterized in that: system maintenance:
the meters used were: the system comprises a universal meter, an insulation megger, an inductance capacitance meter, an oscilloscope, a circuit breaker, a three-phase full-wave rectifier, a filter and an inverter;
connecting a three-phase alternating current input;
maintenance of a power supply control system:
the working personnel check the circuit breaker and the control circuit thereof, if the detection result is that the circuit breaker is normally operated and the door panel button and the indicator lamp are normal, the circuit breaker and the control circuit thereof have no problem; if the detection result is that the circuit breaker is abnormal in operation and the door panel button and the indicator lamp are abnormal, the circuit breaker and the control circuit thereof are in failure, and maintenance is carried out;
detection of a rectification circuit:
the system firstly leads water, a main loop is disconnected from the front stage of a filter reactor, a resistive load which is less than or equal to 500 omega and more than or equal to 500W is connected to two output ends of a three-phase full-wave rectifier, after the system is started, a voltmeter indicates that the rectifying circuit is normal in a range from 1.30U 1 to 1.40U 1, and the voltmeter indicates that the rectifying circuit is abnormal outside a range from 1.30U 1 to 1.40U 1, and maintenance is carried out;
inversion and intermediate frequency load detection:
when the power control system and the rectification circuit are normal, the system is connected with the inversion and intermediate frequency loads, if the system cannot be started normally, the wiring of the main circuit board is checked, 114 and 115 are removed, the system is restarted, the fault is relieved when the system is started normally, the main circuit board is replaced when the system cannot be started, or the system cannot be started, and the inversion and intermediate frequency loads are detected one by one to judge the fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672760.3A CN114337245A (en) | 2021-12-31 | 2021-12-31 | Special high-power medium-frequency grid-connected power supply system for uranium concentration centrifugal machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672760.3A CN114337245A (en) | 2021-12-31 | 2021-12-31 | Special high-power medium-frequency grid-connected power supply system for uranium concentration centrifugal machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114337245A true CN114337245A (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111672760.3A Pending CN114337245A (en) | 2021-12-31 | 2021-12-31 | Special high-power medium-frequency grid-connected power supply system for uranium concentration centrifugal machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114337245A (en) |
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2021
- 2021-12-31 CN CN202111672760.3A patent/CN114337245A/en active Pending
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