CN206149162U - Uranium ore well logging is with neutron tube ion source drive high -voltage pulse power - Google Patents
Uranium ore well logging is with neutron tube ion source drive high -voltage pulse power Download PDFInfo
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- CN206149162U CN206149162U CN201621103024.0U CN201621103024U CN206149162U CN 206149162 U CN206149162 U CN 206149162U CN 201621103024 U CN201621103024 U CN 201621103024U CN 206149162 U CN206149162 U CN 206149162U
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Abstract
The utility model discloses an uranium ore well logging is with neutron tube ion source drive high -voltage pulse power, including CPLD control chip (2), last bridge arm isolating driver (3), lower bridge arm isolating driver (7), CPLD control chip (2) are controlled bridge arm isolating driver (3) respectively and are descended bridge arm isolating driver (7) according to external input signal (12), go up bridge arm isolating driver (3) including last bridge arm DC DC keeps apart power (4), goes up bridge arm isolation opto -coupler (5) and last bridge arm high pressure MOS pipe (6), do bridge arm isolating driver (7) include bridge arm DC down DC keeps apart power (8), opto -coupler (9) and lower bridge arm high pressure MOS pipe (10) are kept apart to lower bridge arm, the utility model has the advantages of simple structure, convenient to use, it can be exported when using, and continuously adjustable high -voltage pulse, the output high -voltage pulse frequency that the duty cycle changes between 0%~95% can reach 0.8 mu s at 1Hz~2KHz continuously adjustable, output high -voltage pulse rising edge width, the falling edge width can reach 20ns, and the especially adapted neutron tube ion source that is used for the uranium ore well logging drives.
Description
Technical field
This utility model belongs to power management Design technical field, and in particular to a kind of high-voltage pulse power source, is particularly well-suited to uranium
Ore deposit well logging is driven with neutron tube ion source.
Background technology
Pulsed neutron log refers to that pulsed neutron source launches at regular intervals the fast neutron of one fixed width, irradiates stratum,
Stratum is studied by studying neutron with the interaction on stratum.At present the method is mainly used in oil and uranium exploration and opens
Adopt industry.Small-sized controllable pulse neutron generator（Neutron tube）It is a critical component in pulsed neutron log system, mainly
Including：Ion source circuit, memorizer heater circuit, the high volt circuit of target.It is applied to oil well logging industry and uranium ore well logging industry
Pulsed neutron log technology some similarities and differences, for oil well logging industry, its neutron tube ion source drives high-voltage pulse power source one
As meet amplitude in 2KV or so, frequency 20KHz, operating current 0.1mA～0.2mA, rising edge/trailing edge in a few μ s ~ several
The requirement of ms；And for uranium ore well logging industry, its neutron tube ion source drives high-voltage pulse power source general satisfaction amplitude to exist
The requirement of 2KV or so, frequency 10Hz ~ 2KHz, but its rising edge/trailing edge width requirement is within 1us and narrower
Better.
Existing neutron tube multimode ionization source adopts Penning ion source structure, but in recent years, rarely found abroad with regard to Pan
Research report in terms of peaceful ion source and its driving.The document that domestic scholars are delivered mainly includes：《Power Electronic Technique》's《In
Sub- pipe ion source high-voltage pulse power source》, Northeast Normal University《The development of ion source pulsed high voltage generator》, Xi'an Petroleum University
's《High temperature high yield controllable pulse neutron generator is studied》.However, these different neutron tube ion source driving pulse high pressure
Power Management Design method is that for oil pulsed neutron log, it exports the rising edge of pulse, trailing edge width can not mostly
The requirement of uranium ore pulsed neutron log is met very well.
Utility model content
Mesh of the present utility model is to provide a kind of simple structure, easy to use, output high-voltage pulse frequency and dutycycle
In certain limit continuously adjustabe, the very precipitous uranium ore well logging of rising edge of a pulse and trailing edge drives high pressure with neutron tube ion source
The pulse power.
The technical solution of the utility model is：A kind of uranium ore well logging neutron tube ion source drives high-voltage pulse power source, bag
CPLD control chips, upper bridge arm isolation drive, lower bridge arm isolation drive are included, CPLD control chips are according to external input signal control
CPLD processed exports suitable sequential, and upper bridge arm isolation drive and lower bridge arm isolation drive are controlled respectively, and the upper bridge arm isolation is driven
It is dynamic to include bridge arm DC-DC insulating power supplies, upper bridge arm isolation optocoupler and upper bridge arm high-voltage MOS pipe, the lower bridge arm isolation drive
Including lower bridge arm DC-DC insulating power supplies, lower bridge arm isolation optocoupler and lower bridge arm high-voltage MOS pipe；+ 5V power supplies are controlled with CPLD
Chip, upper bridge arm DC-DC insulating power supplies, the connection of lower bridge arm DC-DC insulating power supplies, upper bridge arm isolation optocoupler controls core with CPLD
Piece, upper bridge arm DC-DC insulating power supplies, the connection of upper bridge arm high-voltage MOS pipe, lower bridge arm isolation optocoupler and CPLD control chips, lower bridge
Arm DC-DC insulating power supplies, the connection of lower bridge arm high-voltage MOS pipe, input direct-current high voltage power supply is connected with upper bridge arm high-voltage MOS pipe, outward
Portion's input signal is connected with CPLD control chips, and high-voltage pulse power source is exported and upper bridge arm high-voltage MOS pipe, lower bridge arm high-pressure MOS
Pipe connects.
Model XC9536 of the CPLD control chips, using MAX809 as its reset chip, outside input is arrived
The frequency range of the pulse frequency/duty cycle signals of CPLD interfaces is 1Hz ~ 2KHz continuously adjustabes, duty cycle range is 0% ~ 95%
Between continuously adjustabe.
The input power supply of the upper bridge arm DC-DC insulating power supplies and lower bridge arm DC-DC insulating power supplies is+5V, export+
12V, -12V two-way insulating power supply.
Model ACPL-W340 of the upper bridge arm isolation optocoupler and lower bridge arm isolation optocoupler.
Model IXTH1N250 of the upper bridge arm high-voltage MOS pipe and lower bridge arm high-voltage MOS pipe, upper bridge arm high-voltage MOS pipe
Drain D termination input direct-current high voltage power supply, lower bridge arm high-voltage MOS pipe the drain D terminated high voltage pulse power output, in Shang Qiao
One high-voltage and current-limitation resistance of series connection between arm high-voltage MOS pipe and lower bridge arm high-voltage MOS pipe.
Advantage of the present utility model：It is simple structure, easy to use, its when in use can with output duty cycle 0% ~ 95% it
Between change continuously adjustabe high-voltage pulse, output high-voltage pulse frequency can be in 1Hz ~ 2KHz continuously adjustabes, output high-voltage pulse
Up to 0.8 μ s, trailing edge width up to 20ns, the neutron tube ion source for being highly suitable for uranium ore well logging drives rising edge width
It is dynamic.
Description of the drawings
Fig. 1 is the system structure diagram of the embodiment of the present invention 1；
Fig. 2 is the CPLD control chip and its peripheral interface schematic diagram of the embodiment of the present invention 1；
Fig. 3 is the upper bridge arm isolation drive and lower bridge arm isolation drive schematic diagram of the embodiment of the present invention 1.
In figure：+ 5V power supplies (1), CPLD control chips (2), upper bridge arm isolation drive (3), upper bridge arm DC-DC isolation
Power supply (4), upper bridge arm isolation optocoupler (5), upper bridge arm high-voltage MOS pipe (6), lower bridge arm isolation drive (7), lower bridge arm DC-DC every
From power supply (8), lower bridge arm isolation optocoupler (9), lower bridge arm high-voltage MOS pipe (10), input direct-current high voltage power supply (11), outside input
Signal (12), high-voltage pulse power source output (13).
Specific embodiment
This utility model is described in more detail below by the drawings and specific embodiments.
As shown in figure 1, including CPLD control chips 2, upper bridge arm isolation drive 3, lower bridge arm isolation drive 7, it is defeated by outside
Enter the frequency and dutycycle of the control high-voltage pulse of signal 12, one and half are accessed between input direct-current high voltage power supply 11 and high pressure ground
Bridge-type control circuit, using carrying out to DC high-voltage power supply by the way of copped wave, by the upper bridge arm of semibridge system high-voltage MOS pipe with
The mode of bridge arm alternate conduction come realize high voltage pulse export, wherein：CPLD control chips 2 are controlled according to external input signal 12
CPLD exports suitable sequential, and upper bridge arm isolation drive 3 and lower bridge arm isolation drive 7 are controlled respectively, and the upper bridge arm isolation is driven
Dynamic (3), including DC-DC insulating power supplies 4, isolation optocoupler 5 and upper bridge arm high-voltage MOS pipe 6, the lower bridge arm isolation drive 7 includes
DC-DC insulating power supplies 8, isolation optocoupler (9) and lower bridge arm high-voltage MOS pipe 10；+ 5V power supplies 1 and CPLD control chips 2, on
Bridge arm DC-DC insulating power supplies 4, lower bridge arm DC-DC insulating power supplies 8 connect, upper bridge arm isolation optocoupler 5 and CPLD control chips 2, on
Bridge arm DC-DC insulating power supplies 4, upper bridge arm high-voltage MOS pipe 6 connect, lower bridge arm isolation optocoupler 9 and CPLD control chips 2, lower bridge
Arm DC-DC insulating power supplies 8, lower bridge arm high-voltage MOS pipe 10 connect, input direct-current high voltage power supply 11 and upper bridge arm high-voltage MOS pipe 6
Connection, external input signal 12 is connected with CPLD control chips 2, high-voltage pulse power source export 13 with upper bridge arm high-voltage MOS pipe 6,
Lower bridge arm high-voltage MOS pipe 10 connects.
Model XC9536 of the CPLD control chips 2, using MAX809 as its reset chip, outside input is arrived
The frequency range of the pulse frequency/duty cycle signals of CPLD interfaces is 1Hz ~ 2KHz continuously adjustabes, duty cycle range is 0% ~ 95%
Between continuously adjustabe, the switching of specific sequential is realized according to input signal, including upper bridge arm driving interface and lower bridge arm drive and connect
Conducting, cut-off, Power MOSFET of mouth etc., schematic circuit is as shown in Figure 2.
The schematic circuit of the upper bridge arm isolation drive 3 and lower bridge arm isolation drive 7 is as shown in figure 3, upper and lower bridge arm isolation
Drive and include DC-DC insulating power supplies, isolation optocoupler and high-voltage MOS pipe, because the ground wire of upper bridge arm suspends, using high_voltage isolation
Optocoupler 5 and high voltage isolated power supply 4 realize that high-low voltage power source is isolated, i.e., driven using insulating power supply and realize in the form of isolation optocoupler height
The driving of pressure metal-oxide-semiconductor.It is used to strengthen in an indirect audion 8050 of CPLD outputs and isolation optocoupler control input and drives
Electric current.
Model DCH010512DN7 of the DC-DC insulating power supplies, including upper bridge arm insulating power supply 4 and the isolation of lower bridge arm
Power supply 8, its input power is+5V, output ± 12V, isolation voltage 3KV, and output is connected to the voltage of high-pressure MOS by isolation optocoupler
Control end.
Model ACPL-W340 of the isolation optocoupler, including upper bridge arm isolation optocoupler 5 and lower bridge arm isolation optocoupler 9, every
Ionization voltage is 3.5KV, and optocoupler input power supply connects+5V, the input control interface connection CPLD outputs of upper bridge arm isolation optocoupler
Upper bridge arm drive output interface, lower bridge arm isolation optocoupler input control interface connection CPLD output lower bridge arm drive it is defeated
The outgoing interface, ± 12V of isolation optocoupler outfan power supply connection DC-DC insulating power supply outputs, the connection of isolation optocoupler outfan
The voltage controling end of high-pressure MOS.
Realize that the upper bridge arm high-voltage MOS pipe 6 and lower bridge arm high-voltage MOS pipe 10 of copped wave, all directly from high-voltage MOS pipe, are abandoned
The mode of multiple low pressure metal-oxide-semiconductors series connection, it is to avoid because the parameter between different components is mismatched cause to export the rising edge of pulse,
Trailing edge width cannot meet requirement, or even damage metal-oxide-semiconductor.High-voltage MOS pipe selects IXTH1N250,2500V/1A, upper and lower bridge arm
The Dead Time of high-voltage MOS pipe is 1 μ s.One high pressure limit of series connection between upper bridge arm high-voltage MOS pipe 6 and lower bridge arm metal-oxide-semiconductor 10
Leakage resistance.
Generally the ionogenic operating current of neutron tube is 0.1mA～0.2mA, as long as adjustable DC high voltage power supply
Output-current rating reaches 1mA, and pulsed high voltage generator can normal work.
Non- detailed description is prior art.
The above is only that preferred implementation of the present utility model is described, and not thereby limits this utility model
The scope of the claims, equivalent structure or equivalent flow conversion that the explanation of every utilization this utility model and accompanying drawing content are done, or directly
Other related technical fields are connect or be used in indirectly, the protection domain that claims of the present utility model determine all should be fallen into
It is interior.
Claims (5)
1. a kind of uranium ore well logging neutron tube ion source drives high-voltage pulse power source, including CPLD control chips (2), upper bridge arm every
From driving (3), lower bridge arm isolation drive (7), it is characterised in that：CPLD control chips (2) are according to external input signal (12) point
Bridge arm isolation drive (3) and lower bridge arm isolation drive (7) Kong Zhi not be gone up, the upper bridge arm isolation drive (3) is including upper bridge arm DC-
DC insulating power supplies (4), upper bridge arm isolation optocoupler (5) and upper bridge arm high-voltage MOS pipe (6), the lower bridge arm isolation drive (7) includes
Lower bridge arm DC-DC insulating power supplies (8), lower bridge arm isolation optocoupler (9) and lower bridge arm high-voltage MOS pipe (10)；+ 5V power supplies (1)
Be connected with CPLD control chips (2), upper bridge arm DC-DC insulating power supplies (4), lower bridge arm DC-DC insulating power supplies (8), upper bridge arm every
It is connected with CPLD control chips (2), upper bridge arm DC-DC insulating power supplies (4), upper bridge arm high-voltage MOS pipe (6) from optocoupler (5), under
Bridge arm isolation optocoupler (9) and CPLD control chips (2), lower bridge arm DC-DC insulating power supplies (8), lower bridge arm high-voltage MOS pipe (10)
Connection, input direct-current high voltage power supply (11) is connected with upper bridge arm high-voltage MOS pipe (6), and external input signal (12) is controlled with CPLD
Chip (2) connects, and high-voltage pulse power source exports (13) with upper bridge arm high-voltage MOS pipe (6), lower bridge arm high-voltage MOS pipe (10) even
Connect.
2. the uranium ore well logging according to claim 1 drives high-voltage pulse power source with neutron tube ion source, it is characterised in that：
Model XC9536 of the CPLD control chips (2), using MAX809 as its reset chip, outside input is to CPLD interfaces
Pulse frequency/duty cycle signals frequency range be 1Hz ~ 2KHz continuously adjustabes, duty cycle range be continuous between 0% ~ 95%
It is adjustable.
3. the uranium ore well logging according to claim 1 drives high-voltage pulse power source with neutron tube ion source, it is characterised in that：
The input power supply of the upper bridge arm DC-DC insulating power supplies (4) and lower bridge arm DC-DC insulating power supplies (8) is+5V, export+
12V, -12V two-way insulating power supply.
4. the uranium ore well logging according to claim 1 drives high-voltage pulse power source with neutron tube ion source, it is characterised in that：
The upper bridge arm isolation optocoupler (5) and model ACPL-W340 of lower bridge arm isolation optocoupler (9).
5. the uranium ore well logging according to claim 1 drives high-voltage pulse power source with neutron tube ion source, it is characterised in that：
The upper bridge arm high-voltage MOS pipe (6) and model IXTH1N250 of lower bridge arm high-voltage MOS pipe (10), upper bridge arm high-voltage MOS pipe
(6) drain D termination input direct-current high voltage power supply (11), the drain D terminated high voltage pulse power of lower bridge arm high-voltage MOS pipe (10)
Output (13), a high-voltage and current-limitation resistance of connecting between upper bridge arm high-voltage MOS pipe (6) and lower bridge arm high-voltage MOS pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621103024.0U CN206149162U (en) | 2016-10-08 | 2016-10-08 | Uranium ore well logging is with neutron tube ion source drive high -voltage pulse power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621103024.0U CN206149162U (en) | 2016-10-08 | 2016-10-08 | Uranium ore well logging is with neutron tube ion source drive high -voltage pulse power |
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| CN206149162U true CN206149162U (en) | 2017-05-03 |
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| CN201621103024.0U Active CN206149162U (en) | 2016-10-08 | 2016-10-08 | Uranium ore well logging is with neutron tube ion source drive high -voltage pulse power |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612412A (en) * | 2017-10-24 | 2018-01-19 | 东华理工大学 | A kind of gas neutron detector high-low pressure Pulased power supply unit and its control method |
| CN108825219A (en) * | 2018-05-25 | 2018-11-16 | 东华理工大学 | The uranium ore log calibration parameter of fusion naturalγ-rayenergyspectrum and neutron time spectrum seeks method |
-
2016
- 2016-10-08 CN CN201621103024.0U patent/CN206149162U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612412A (en) * | 2017-10-24 | 2018-01-19 | 东华理工大学 | A kind of gas neutron detector high-low pressure Pulased power supply unit and its control method |
| CN108825219A (en) * | 2018-05-25 | 2018-11-16 | 东华理工大学 | The uranium ore log calibration parameter of fusion naturalγ-rayenergyspectrum and neutron time spectrum seeks method |
| CN108825219B (en) * | 2018-05-25 | 2021-08-10 | 东华理工大学 | Uranium mine logging scale parameter solving method fusing natural gamma energy spectrum and neutron time spectrum |
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