CN103808737B - Portable high-frequency X-ray flaw - Google Patents
Portable high-frequency X-ray flaw Download PDFInfo
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- CN103808737B CN103808737B CN201410057028.9A CN201410057028A CN103808737B CN 103808737 B CN103808737 B CN 103808737B CN 201410057028 A CN201410057028 A CN 201410057028A CN 103808737 B CN103808737 B CN 103808737B
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Abstract
The present invention relates to field of non destructive testing, disclose a kind of Portable high-frequency X-ray flaw, including guidance panel and ray generator, ray generator includes Power Entry Module, circuit of synchronous rectification, bridge inverter main circuit, high frequency transformer, ten voltage doubling rectifing circuits and X-ray tube, connect between ten voltage doubling rectifing circuits and X-ray tube and have voltage, tube current sample circuit, connecting between X-ray tube and constant current source has current sampling circuit, voltage, tube current sample circuit that the accelerating potential signal of collection is fed back to ARM single-chip microcomputer and drive circuit；The filament current signal of collection is fed back to ARM single-chip microcomputer and constant current source by current sampling circuit.The method have the advantages that, X-ray tube accelerating potential and heater current use digital simulation two close cycles working method, can monitor in real time and corrected X ray tube accelerating potential and heater current, and film making definition is high, and X-ray penetration thickness is big.
Description
Technical field
The present invention relates to field of non destructive testing, particularly relate to a kind of Portable high-frequency X-ray flaw.
Background technology
Portable X-ray detection apparatus is applied widely in field of non destructive testing, current domestic and international market
Portable X-ray detection apparatus mainly includes controller, head and power cable three part.The internal bag of controller
Containing control circuit and power circuit, mainly produce medium-frequency pulse voltage.Intermediate frequency liter is mainly comprised inside head
Pressure high voltage package and X-ray tube two parts.The shortcoming using the x-ray flaw detector of this structure to be primarily present is
Power cable must use big electric current cable, and the electric current in cable is pulsating current, can produce bigger interference
And radiation.Requirement to cable and connection terminal is the highest, causes cost high.The high-voltage tube electricity of X-ray tube
Stream measure loop can be connected to controller by this cable, there is certain potential safety hazard.
Portable X defectoscope controller many employings controllable silicon is used for rectification as power device, controllable silicon at present
With frequency conversion copped wave.It is big that the circuit controller using this technology has volume, and heating is big, and operating frequency is low, effect
Rate is low, and energy consumption is high, and is only applicable to power frequency AC and powers, and drive circuit is complicated, needs large volume
Inductance, the shortcomings such as input power factor is low.Meanwhile, currently used portable X-ray detection apparatus controller
Controlling the mode of X-ray tube accelerating potential output voltage stabilizing is that digital open loop, the mode of the single closed loop of simulation work.
The accelerating potential of X-ray tube and heater current are all from same high voltage package power supply.Cause heater current uncontrollable,
Setting voltage is uncontrollable, and actual output voltage corresponding relation relies only on Default Value, it is impossible to monitor in real time
And adjust actual output voltage, the shortcomings such as output voltage precision is low.Heater current is uncontrollable, therefore X-ray tube
The amount produced is the most uncontrollable, the definition of impact film making.
Portable X defectoscope head section uses the mode of intermediate frequency boosting high voltage package by action of low-voltage pulse voltage at present
Boosting to 150KV～350KV, the later voltage that boosts remains as pulse voltage, and X-ray tube to be supplied uses,
Lean on is the self-rectifying mode of X-ray tube.The shortcoming using this technology is that boosting high voltage package volume is big, weight
Greatly, cost is high, high voltage package easy high-voltage breakdown damage etc., and the voltage of supply X-ray tube is pulsating volage, institute
Being interrupted with the X-ray of generation, the efficiency of the X-ray produced in the unit interval is low, and ray energy is the most not
Stable, therefore in the unit interval during film making exposure, the object thickness penetrated is the most much smaller.
Summary of the invention
It is an object of the invention to provide a kind of Portable high-frequency X-ray flaw, X-ray tube accelerating potential and
Heater current uses digital simulation two close cycles working method, it is possible to monitoring in real time corrected X ray tube accelerate electricity
Pressure and heater current, output voltage precision is high, and the definition of film making is high, and X-ray penetration thickness is big.
To achieve these goals, present invention employs following technical scheme: a kind of portable high frequency X penetrates
Line defectoscope, including guidance panel and connected ray generator, described ray generator includes power supply
Input module, for alternating current become unidirectional current and the circuit of synchronous rectification being connected with Power Entry Module,
For unidirectional current being become high-frequency alternating current and the bridge inverter main circuit being connected with circuit of synchronous rectification and bridge-type
High frequency transformer that inverter circuit connects, increase voltage and and high frequency for alternating current is become unidirectional current simultaneously
Ten voltage doubling rectifing circuits that transformator connects and produce X-ray and the X-ray that is connected with ten voltage doubling rectifing circuits
Pipe, described constant current source provides electric current for X-ray tube；Between described ten voltage doubling rectifing circuits and X-ray tube
Connect and have for gathering the voltage of accelerating potential, tube current sample circuit, described circuit of synchronous rectification and DC-DC
Voltage transformation module connects, and described DC-DC voltage transformation module is connected with drive circuit, described drive circuit
It is connected with bridge inverter main circuit；It is connected between described constant current source and drive circuit and has ARM single-chip microcomputer, described
The current sampling circuit having for gathering heater current it is connected between X-ray tube with constant current source, described voltage,
The accelerating potential signal of collection is fed back to ARM single-chip microcomputer and drive circuit by tube current sample circuit；Described electricity
The filament current signal correspondence of collection is fed back to ARM single-chip microcomputer and constant current source by stream sample circuit.
Further, described circuit of synchronous rectification and bridge inverter main circuit all use metal-oxide-semiconductor as power device.
Further, described guidance panel is provided with power supply and single-chip microcomputer, this single-chip microcomputer respectively with button, aobvious
Show that device and RS485 communication interface connect.
Further, connected by the communications cable between described guidance panel and ray generator.
Further, described guidance panel is provided with radiation monitoring equipment, this radiation monitoring equipment and buzzer
Connect.
Further, on described ARM single-chip microcomputer, connection has RS485 communication interface.
The beneficial effects of the present invention is: 1, use high frequency transformer and ten voltage doubling rectifing circuits, make acceleration electricity
Pressure is constant DC voltage, and it is little that high frequency transformer hinge structure has volume, lightweight, low cost,
Efficiency advantages of higher, ten voltage multiplying rectifier hinge structure have voltage constant, definition advantages of higher of making film.
2, X-ray tube accelerating potential and heater current use digital simulation two close cycles working method, setting voltage
Controlled, it is possible to monitoring corrected X ray tube accelerating potential and heater current in real time, output voltage precision is high,
The definition of film making is high, and X-ray penetration thickness is big.
3, the wire before guidance panel and ray generator is connected as the communications cable and small-power connects terminal,
Connect and need not thick wire and big current connection terminal.Reduce cost, increase the service life, reduce behaviour
Make the carrying labor intensity of personnel.The length of the communications cable can be set according to field demand, it is to avoid to behaviour simultaneously
Make the harm that personnel are healthy.
4, power device uses metal-oxide-semiconductor to instead of controllable silicon of the prior art, relatively and for controllable silicon,
It is high that metal-oxide-semiconductor has frequency, and volume is little, lightweight, and power capacity is big, generates heat little, and efficiency is high, low cost
Etc. advantage.
Accompanying drawing explanation
In order to be illustrated more clearly that embodiment of the present invention technical scheme, required in embodiment being described below
The accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below be only the present invention in order to
It is illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In technology description, the required accompanying drawing used is briefly described, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the module principle figure of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
A kind of Portable high-frequency X-ray flaw as shown in Figure 1, including guidance panel 1 and connected
Ray generator 2, connected by the communications cable between guidance panel 1 and ray generator 2, by communication
Guidance panel 1 and ray generator 2 can be separated to more than safe distance by cable, are prevented effectively from operator
The harm radiated.Pass through in the communications cable is low-voltage small-signal, does not interferes with and radiates, and
Small-power adapter, low cost can be used.
Described ray generator 2 includes Power Entry Module 3, for alternating current becomes unidirectional current and and power supply
Circuit of synchronous rectification 4 that input module 3 connects, for unidirectional current being become high-frequency alternating current and and synchronous rectification
Circuit 4 connect bridge inverter main circuit 5 is connected with bridge inverter main circuit 5 high frequency transformer 6, for general
Alternating current become unidirectional current increase simultaneously voltage and ten voltage doubling rectifing circuits 7 being connected with high frequency transformer 6 and
Producing X-ray and the X-ray tube 8 being connected with ten voltage doubling rectifing circuits 7, described constant current source 14 is X
Ray tube 8 provides electric current；It is little that high frequency transformer 6 hinge structure has volume, lightweight, low cost,
Efficiency advantages of higher, ten voltage multiplying rectifier hinge structure have voltage constant, definition advantages of higher of making film.
The accelerating potential of ray generator 2 internal supply X-ray tube 8 is by high frequency transformer 6 and ten voltage multiplying rectifiers electricity
Road 7 provides jointly.High frequency transformer 6 operating frequency is 40-200KHz, has volume little, lightweight,
The advantages such as efficiency is high.Whole via ten voltage doubling rectifing circuits 7 through the high-voltage alternating voltage of high frequency transformer 6 output
Stream becomes DC voltage, and is promoted further by DC voltage, it is ensured that promoted by the accelerating potential of X-ray tube 8
To the voltage range being suitable for X-ray tube 8 work.
Connect between described ten voltage doubling rectifing circuits 7 and X-ray tube 8 have voltage for gathering accelerating potential,
Tube current sample circuit 9, described circuit of synchronous rectification 4 is connected with DC-DC voltage transformation module 11, described
DC-DC voltage transformation module 11 is connected with drive circuit 12, described drive circuit 12 and bridge inverter main circuit
5 connect.
Being connected between described constant current source 14 and drive circuit 12 and have ARM single-chip microcomputer 13, described ARM is mono-
Connect on sheet machine 13 and have RS485 communication interface, for being connected with external equipment.Described X-ray tube 8 is with permanent
Connect between stream power supply 14 and have the current sampling circuit 10 for gathering heater current, described voltage, tube current
The accelerating potential signal of collection is fed back to ARM single-chip microcomputer 13 and drive circuit 12 by sample circuit 9；ARM
Single-chip microcomputer 13 and drive circuit 12 produce numeral accelerating potential signal and simulation accelerated voltage signal respectively.Institute
State current sampling circuit 10 and the filament current signal of collection is fed back to ARM single-chip microcomputer 13 and constant current source
14.APM single-chip microcomputer 13 and constant current source 14 produce numeral filament current signal and simulation heater current respectively
Signal, the internal accelerating potential to supply X-ray tube 8 of such ray generator 2 and heater current are controlled respectively
System.The accelerating potential of X-ray tube 8 uses digital simulation two close cycles pattern, the real-time voltage stabilizing of analog closed-loop, number
Word closed loop monitors correction voltage in real time, therefore the accelerating potential control accuracy of X-ray tube 8 is high, voltage stabilization,
Produced X-ray has the advantage that penetration capacity is strong.The heater current of X-ray tube 8 uses constant current source
14 supplies, and use digital simulation two close cycles pattern.The real-time constant current of analog closed-loop, digital closed loop is supervised in real time
Surveying correcting current, therefore the heater current control accuracy of X-ray tube 8 is high, current stabilization, produced X penetrates
Line amount is stable, has the advantage that definition is high.The accelerating potential of X-ray tube 8 and heater current all use number
Two close cycles mode of operation intended by type matrix, and both are used in combination, it is ensured that it is high that X-ray possesses definition, penetration capacity
The advantage such as strong.
Wherein, described circuit of synchronous rectification 4 and bridge inverter main circuit 5 all use metal-oxide-semiconductor as power device.
Relatively with controllable silicon for, it is high that metal-oxide-semiconductor has frequency, and volume is little, lightweight, and power capacity is big, generates heat
Little, efficiency is high, low cost and other advantages.
Wherein, described guidance panel 1 is provided with power supply and single-chip microcomputer 15, this single-chip microcomputer 15 respectively with button
16, display 17 and RS485 communication interface connects.Power supply provides voltage, button 16 for guidance panel 1
Input instruction, single-chip microcomputer 15 plays pivotal role, and display 17 shows that various parameter, RS485 communication connect
Mouth is for being connected with external equipment.Guidance panel 1 volume is little, lightweight, can be with the labor of reduction operation personnel
Fatigue resistance.
Wherein, described guidance panel 1 is provided with radiation monitoring equipment 19, this radiation monitoring equipment 19 and buzzing
Device 18 connects.Radiation monitoring equipment 19 makes guidance panel 1 possess Radiation monitoring function, when amount of radiation reaches
When human body is produced harm, buzzer 18 alarm operator are away from x ray generator 2, reduce X and penetrate
The harm that line is healthy to operator.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (6)
1. a Portable high-frequency X-ray flaw, it is characterised in that include guidance panel (1) and with
Its ray generator (2) connected, described ray generator (2) includes Power Entry Module (3), is used for
Alternating current is become unidirectional current and the circuit of synchronous rectification (4) being connected with Power Entry Module (3), for will
Unidirectional current becomes high-frequency alternating current and the bridge inverter main circuit (5) being connected with circuit of synchronous rectification (4) and bridge
High frequency transformer (6) that formula inverter circuit (5) connects, increase for high-frequency alternating current is become unidirectional current simultaneously
Big voltage and ten voltage doubling rectifing circuits (7) being connected with high frequency transformer (6) and generation X-ray and with ten
The X-ray tube (8) that voltage doubling rectifing circuit (7) connects, described constant current source (14) is X-ray tube (8)
Electric current is provided；
Described ten voltage doubling rectifing circuits (7) connect to be had for gathering the voltage of accelerating potential, tube current sampling electricity
Road (9), described circuit of synchronous rectification (4) is connected with DC-DC voltage transformation module (11), described DC-DC
Voltage transformation module (11) is connected with drive circuit (12), described drive circuit (12) and bridge type inverse
Circuit (5) connects；
It is connected between described constant current source (14) with drive circuit (12) and has ARM single-chip microcomputer (13), institute
State and between X-ray tube (8) with constant current source (14), be connected the current sample electricity having for gathering heater current
Road (10), the accelerating potential signal of collection is fed back to ARM by described voltage, tube current sample circuit (9)
Single-chip microcomputer (13) and drive circuit (12)；The heater current letter that described current sampling circuit (10) will gather
Number feed back to ARM single-chip microcomputer (13) and constant current source (14).
Portable high-frequency X-ray flaw the most according to claim 1, it is characterised in that: described same
Step rectification circuit (4) and bridge inverter main circuit (5) all use metal-oxide-semiconductor as power device.
Portable high-frequency X-ray flaw the most according to claim 1, it is characterised in that: described behaviour
Make panel (1) and be provided with power supply and single-chip microcomputer (15), this single-chip microcomputer (15) respectively with button (16), aobvious
Show that device (17) and RS485 communication interface connect.
Portable high-frequency X-ray flaw the most according to claim 1, it is characterised in that: described behaviour
Make to be connected by the communications cable between panel (1) and ray generator (2).
Portable high-frequency X-ray flaw the most according to claim 1, it is characterised in that: described behaviour
Make panel (1) and be provided with radiation monitoring equipment (19), this radiation monitoring equipment (19) and buzzer (18)
Connect.
6. according to the Portable high-frequency X-ray flaw described in Claims 1 to 5 any one claim, its
It is characterised by: the upper connection of described ARM single-chip microcomputer (13) has RS485 communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057028.9A CN103808737B (en) | 2014-02-19 | 2014-02-19 | Portable high-frequency X-ray flaw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057028.9A CN103808737B (en) | 2014-02-19 | 2014-02-19 | Portable high-frequency X-ray flaw |
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| Publication Number | Publication Date |
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| CN103808737A CN103808737A (en) | 2014-05-21 |
| CN103808737B true CN103808737B (en) | 2016-08-17 |
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| CN201410057028.9A Active CN103808737B (en) | 2014-02-19 | 2014-02-19 | Portable high-frequency X-ray flaw |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430858B (en) * | 2015-11-06 | 2017-06-23 | 苏州博思得电气有限公司 | The filament current value calibration method and device of a kind of X-ray tube |
| CN109060848A (en) * | 2018-09-05 | 2018-12-21 | 杭州惠威无损探伤设备有限公司 | A kind of portable high frequency direct-current X-ray defectoscope and its control method |
| CN116602702B (en) * | 2023-06-05 | 2023-11-17 | 珠海西格医疗设备有限公司 | Dental X-ray machine based on high-frequency direct-current constant-voltage control |
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|---|---|---|---|---|
| CN101975785A (en) * | 2010-12-03 | 2011-02-16 | 丹东奥龙射线仪器有限公司 | Portable high-frequency X-ray inspection machine |
| CN202335054U (en) * | 2011-08-16 | 2012-07-11 | 上海碧埃荻电子科技有限公司 | Portable-type X-ray production machine |
| CN203949884U (en) * | 2014-02-19 | 2014-11-19 | 成都迈硕电气有限公司 | Portable high-frequency X-ray flaw |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090030531A (en) * | 2007-09-20 | 2009-03-25 | (주)디알젬 | X-ray high voltage generator |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975785A (en) * | 2010-12-03 | 2011-02-16 | 丹东奥龙射线仪器有限公司 | Portable high-frequency X-ray inspection machine |
| CN202335054U (en) * | 2011-08-16 | 2012-07-11 | 上海碧埃荻电子科技有限公司 | Portable-type X-ray production machine |
| CN203949884U (en) * | 2014-02-19 | 2014-11-19 | 成都迈硕电气有限公司 | Portable high-frequency X-ray flaw |
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| CN103808737A (en) | 2014-05-21 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zeng Maoliang Inventor after: Xie Junhe Inventor after: Liu Cheng Inventor after: Luo Jian Inventor after: Fang Fei Inventor before: Zeng Maoliang Inventor before: Xie Junhe Inventor before: Liu Cheng Inventor before: Luo Jian |
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| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160122 Address after: Tianchen 610000 Chengdu Road, Sichuan province high tech Zone No. 88 No. 6 Building 4 unit 2 floor Applicant after: CHENGDU AISHUO TECHNOLOGY CO., LTD. Address before: 610000 No. 9, No. 9, 18 venture Road, hi tech Zone, Sichuan, Chengdu Applicant before: CHENGDU MYSOOW ELECTRICAL CO., LTD. |
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