CN109688685A - The arcing detection circuit of X-ray generator and a kind of X-ray generator - Google Patents
The arcing detection circuit of X-ray generator and a kind of X-ray generator Download PDFInfo
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- CN109688685A CN109688685A CN201910045788.0A CN201910045788A CN109688685A CN 109688685 A CN109688685 A CN 109688685A CN 201910045788 A CN201910045788 A CN 201910045788A CN 109688685 A CN109688685 A CN 109688685A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/265—Measurements of current, voltage or power
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Abstract
The invention discloses the arcing detection circuit of X-ray generator and a kind of X-ray generators, wherein transformer has the first vice-side winding and the second vice-side winding, the second conducting wire for connecting the second vice-side winding of the first conducting wire and connection of the first vice-side winding is each passed through the iron core-closed of current transformer and is grounded again, or so that first conducting wire and the second conducting wire is first connected then and be grounded jointly.Since when striking sparks, the electric current on two vice-side winding ground lines can generate variation " from scratch ", and above-mentioned set-up mode can sense when the significant change, therefore be convenient for Arc detection.Whether, when sparking occurs so that two vice-side winding ground lines power on changing of miscarriage, electromotive force can accordingly be generated by being wound in the winding on iron core-closed, strike sparks to can be detected in insulation fuel tank according to the electromotive force of winding.The present invention is just able to detect that the spark phenomenon in insulation fuel tank using the higher comparison module replacement voltage-stabiliser tube of accuracy, and testing result is more accurate.
Description
Technical field
The present invention relates to X-ray generator technical fields, and in particular to the arcing detection circuit of X-ray generator and
A kind of X-ray generator.
Background technique
As shown in Figure 1A, a kind of X-ray generator includes PFC unit, H bridge control circuit, controller, transformer,
One voltage-multiplying circuit, the second voltage-multiplying circuit and X-ray tube.PFC unit and H bridge control circuit (S1, S2, S3 and S4 in such as Figure 1A
It is shown), for network voltage to be converted to DC voltage, controller is used to control each controllable switch in H bridge control circuit
It is turned on or off, and control X-ray generator starts or stops operation.The primary side winding of transformer and H-bridge circuit it is defeated
Outlet connection, the first end of the first vice-side winding export positive voltage, and the first end of the second vice-side winding exports negative voltage, and first is secondary
The second end of side winding and the second end of the second vice-side winding are grounded.First voltage-multiplying circuit is located at the first of the first vice-side winding
Between output end and the anode of X-ray tube, the positive voltage for being exported the first vice-side winding boosts.Second times of piezoelectricity
Road is located between the first output end of the second vice-side winding and the cathode of X-ray tube, for exported the second vice-side winding
Negative voltage boosts.
The voltage level as involved in transformer, the first voltage-multiplying circuit, the second voltage-multiplying circuit and X-ray tube is higher, is
Security consideration is usually disposed in the insulation fuel tank of sealing.Voltage in insulation fuel tank is typically up to 160kV, and insulate
It is flooded with alternation high-voltage electromagnetic field in fuel tank, when insulating oil, the insulating properties of fuel tank internal part, the vacuum degree of X-ray tube, X are penetrated
When spool does not have to instruct the either sides problems such as pipe, X-ray tube quality, fuel tank air-tightness, it will strike sparks in fuel tank, and
Sparking, which occurs, in insulation fuel tank to be absolutely avoided.
Form high voltage between spark phenomenon i.e. two potential point, and exhausted between the high electrical breakdown two potential points
Edge medium and the violent electric discharge phenomena generated.Due to the conservation of energy on the former and deputy side of transformer, when transformer secondary in insulation fuel tank
When side is struck sparks, the electric current of the outer transformer primary side side of insulation fuel tank can be caused to increased dramatically, if protected not in time
Shield then will lead to the power device damage of the outer transformer primary side side of insulation fuel tank.However, due to the voltage etc. in insulation fuel tank
Grade is higher, electric current is smaller, and when striking sparks in the fuel tank that insulate, the current variation value of transformer secondary side is also smaller；Also,
Transformer secondary side there is electric current originally, even if current value changes, and the variation of " from small to large ", for example, electric
Flow valuve is changed to 0.8A from 0.5A, i.e. the curent change of transformer secondary side is often more faint, this to pass through transformer
The curent change of secondary side side is more difficult to detect the spark phenomenon in insulation fuel tank.
For this purpose, the prior art proposes a kind of arcing detection circuit, as shown in FIG. 1A and 1B, the first vice-side winding with
Sampling resistor R5 is set between grounding point, sampling resistor R6 is set between the second vice-side winding and grounding point, passes through sampling electricity
Arc detection is realized in resistance and the combination of triode, voltage-stabiliser tube.Specifically, by taking sampling resistor R6 as an example, the one of sampling resistor R6
End ground connection, the other end are connected to the cathode of voltage-stabiliser tube；The anode of voltage-stabiliser tube is connected to the base stage b of NPN triode；NPN triode
Emitter e ground connection, collector c is connected to power supply VCC；By the Voltage Feedback value controller of collector c.Its testing principle is such as
Under: when sparking, which occurs, in the fuel tank that insulate causes the current values for flowing through sampling resistor R6 to increase, due on sampling resistor R6
On the right side of electric current is flowed to from left side, and right side ground, therefore left side voltage is higher than ground voltage；Again due to the emitter e of NPN triode
Ground connection, therefore when NPN triode does not turn on, the voltage of base stage b is ground voltage；Above Ground due to the left side sampling resistor R6 voltage
Voltage, so that voltage is higher than ground voltage on the right side of voltage-stabiliser tube namely voltage-stabiliser tube right side voltage is higher than left side voltage；On the right side of voltage-stabiliser tube
When voltage difference between voltage and left side voltage reaches the reverse turn-on voltages threshold value of voltage-stabiliser tube, so that voltage-stabiliser tube is reversely led
It is logical；Also, NPN triode is connected, controller receives level signal, so that controller can be according to the level received
Spark phenomenon has occurred in signal judgement insulation fuel tank.It is beaten by the combination of sampling resistor R5 and triode, voltage-stabiliser tube to realize
The principle of fire detection is similar, and details are not described herein.
Inventors have found that although foregoing circuit can be changed by the weak current of transformer secondary side in insulation fuel tank
Realize Arc detection, still, the reverse turn-on voltages threshold value of voltage-stabiliser tube in actual use usually with its nominal value it
Between there are error, this makes the testing result inaccuracy of above-mentioned arcing detection circuit.
Summary of the invention
In view of this, the embodiment of the invention provides the arcing detection circuits of X-ray generator and a kind of X-ray to occur
Device, to solve the problems, such as the testing result inaccuracy of existing arcing detection circuit.
According in a first aspect, the embodiment of the invention provides a kind of arcing detection circuit of X-ray generator, the X
The transformer and X-ray tube of ray generating device are set in insulation fuel tank；The transformer has the first vice-side winding and the
Two vice-side windings, the first end of first vice-side winding are connect with the anode of the X-ray tube, second vice-side winding
First end is connect with the cathode of the X-ray tube, is connected described in the first conducting wire and the connection of the first vice-side winding second end
Second conducting wire of the second vice-side winding second end is grounded；The arcing detection circuit includes: current transformer, including closure iron
Core and winding；Also, first conducting wire and second conducting wire are passed through from the first iron core-closed side, and described
Iron core-closed second side ground connection or first conducting wire and second conducting wire connect in the first iron core-closed side
It connects, the privates of stretching passes through described iron core-closed at tie point, and in iron core-closed second side ground connection；Compare mould
Block, for judging whether the electromotive force of the current transformer winding is greater than comparison reference；It is defeated when being greater than comparison reference
The testing result signal struck sparks out.
Optionally, the comparison module includes: sampling resistor, the windings in series with the current transformer；At least one
Comparator, input terminal obtain the voltage at the sampling resistor both ends, and output end is used to export the testing result letter struck sparks
Number.
Optionally, the comparator is at least two, and the comparison reference of each comparator is different.
Optionally, the arcing detection circuit further include: rectified current is set to the sampling resistor and the comparator
Between, for the ac voltage signal at the sampling resistor both ends to be converted to d. c. voltage signal.
According to second aspect, the embodiment of the invention provides a kind of X-ray generators, comprising: transformer, X-ray tube,
It is set in insulation fuel tank；The transformer has the first vice-side winding and the second vice-side winding, first vice-side winding
First end is connect with the anode of the X-ray tube, and the first end of second vice-side winding and the cathode of the X-ray tube connect
It connects, connect the first conducting wire of the first vice-side winding second end and connects the second conducting wire of the second vice-side winding second end
It is grounded；Arcing detection circuit described in first aspect or its any optional embodiment.
Optionally, described device further include: controller is connect with the output end of the comparison module, for controlling the X
Ray generating device starts or stops operation.
Optionally, the comparison module includes: sampling resistor, the windings in series with the current transformer；At least one
Comparator, input terminal obtain the voltage at the sampling resistor both ends, and output end is used to export the testing result letter struck sparks
Number；The X-ray generator further include: DA conversion circuit is separately connected with the controller and the comparator, is used for root
Comparison reference is provided according to the control instruction of the controller for the comparator.
Optionally, described device further include: the first voltage-multiplying circuit, positioned at first vice-side winding the first output end with
Between the anode of the X-ray tube, for being the X-ray tube power supply after positive voltage boosts；And/or second voltage-multiplying circuit,
Between the first output end of second vice-side winding and the cathode of the X-ray tube, for being after negative voltage boosts
The X-ray tube power supply.
According to the third aspect, the embodiment of the invention provides X described in second aspect or its any optional embodiment to penetrate
The Protection of arcing method of line generating device, comprising: judge whether strike sparks in insulation fuel tank according to Arc detection consequential signal；
When striking sparks in the fuel tank that insulate, it is out of service to control the X-ray generator.
Optionally, described when striking sparks in the fuel tank that insulate, the step out of service of X-ray generator described in controller
It suddenly include: to judge whether the intensity of Arc detection signal is greater than or equal to preset threshold when striking sparks in the fuel tank that insulate；When
When the intensity of Arc detection signal is less than preset threshold, controls the X-ray generator and close weight after the first predetermined amount of time
It is new to open；Otherwise, it controls the X-ray generator to close and be not then turned in the second predetermined amount of time, described second is predetermined
Period is greater than first predetermined amount of time.
The arcing detection circuit of X-ray generator provided by the embodiment of the present invention and a kind of X-ray generator, will
The first conducting wire and the second conducting wire for being separately connected two vice-side windings of transformer be each passed through current transformer it is iron core-closed again
Ground connection, or first conducting wire and the second conducting wire is made first to connect then common ground connection, due to when striking sparks, two pair sides around
Curent change on group ground line is more obvious, and above-mentioned set-up mode can sense when that two vice-side windings are grounded upper electric current
" from scratch " more apparent variation, therefore it is convenient for Arc detection.When generation sparking so that two vice-side windings ground lines
When powering on the variation for life " from scratch " of miscarrying, electromotive force can accordingly be generated by being wound in the winding on iron core-closed, to compare
Whether module can detect in insulation fuel tank according to the electromotive force of winding and strike sparks.Above-mentioned arcing detection circuit and X-ray
Generating device is not used voltage-stabiliser tube and is just able to detect that the spark phenomenon in insulation fuel tank using comparison module, and comparison module
Comparison accuracy it is higher, so that testing result is more accurate.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Figure 1A shows the structural schematic diagram and Arc detection schematic diagram of existing X-ray generator；
Figure 1B shows the circuit diagram of existing comparison module；
Fig. 2A shows a kind of schematic diagram of arcing detection circuit according to an embodiment of the present invention；
Fig. 2 B shows the schematic diagram of another arcing detection circuit according to an embodiment of the present invention；
Fig. 3 shows a kind of circuit diagram of comparison module according to an embodiment of the present invention；
Fig. 4 shows another circuit diagram of comparison module according to an embodiment of the present invention；
Fig. 5 shows the flow chart for the Protection of arcing method implemented according to the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Inventors have found that being substantially to discharge over the ground when striking sparks in the fuel tank that insulate, due to the volume in insulation fuel tank
Smaller, which position is struck sparks in the fuel tank that whether insulate, and can all cause two vice-side windings of transformer in insulation fuel tank
The variation of " from scratch " occurs for the electric current on ground line, i.e., almost without electric current on ground line when not striking sparks, generation is beaten
There is electric current on ground line when fiery；Also, should curent change situation " from scratch " than transformer secondary side " from it is few to
It is more " curent change situation it is obvious, such as electric current on ground line is changed to 1A from 0, and transformer secondary is around the electricity for doing side
Stream is changed to 0.8A from 0.5A.Based on this, inventor proposes the ground line by two vice-side windings of transformer in insulation fuel tank
On curent change realize Arc detection.
Embodiment one
The embodiment of the invention provides a kind of arcing detection circuits of X-ray generator.Such as Fig. 2A or Fig. 2 B and Fig. 3
Shown, the transformer and X-ray tube of X-ray generator are set in insulation fuel tank.The transformer has the first vice-side winding
With the second vice-side winding, the first vice-side winding first end output positive voltage simultaneously with X-ray tube anode connect, second pair side around
The first end output negative voltage of group is simultaneously connect with the cathode of X-ray tube.The arcing detection circuit includes Current Transmit and ratio
Compared with module.
Current transformer includes iron core-closed and winding.Connect the first vice-side winding of transformer second end the first conducting wire and
The second conducting wire for connecting the second vice-side winding second end is grounded, and there are two types of earthing modes.
The first is as shown in Figure 2 A, i.e. the first conducting wire and the second conducting wire are passed through from the first iron core-closed side, and are being closed
Close second side ground connection of iron core.Due to the current direction on the first conducting wire and the second conducting wire on the contrary, when not striking sparks, first
It flows to opposite electric current on conducting wire and the second conducting wire almost to cancel out each other no residual current, only when striking sparks, first is led
It is flowed to after opposite electric current is cancelled out each other on line and the second conducting wire and just has residual current.Electricity on first conducting wire and the second conducting wire
For stream in iron core-closed interior generated variation magnetic field on the contrary, therefore under the earthing mode, iron core-closed interior variation magnetic field is practical
Corresponding to changing magnetic caused by (flow on the first conducting wire and the second conducting wire opposite electric current cancel out each other after) residual current
?.
Second as shown in Figure 2 B, i.e. the first conducting wire and the second conducting wire are connected in the first iron core-closed side, and connection is pointed out
The privates of stretching passes through iron core-closed, and is grounded in iron core-closed second side.Under the earthing mode, in privates
Electric current is that the residual current after opposite electric current is cancelled out each other is flowed on the first conducting wire and the second conducting wire, iron core-closed interior change
Magnetizing field actually corresponds to variation magnetic field caused by residual current.
According to the discovery of inventor, the above two earthing mode of the first conducting wire and the second conducting wire be can sense when generation
When sparking, insulate fuel tank in two vice-side windings of transformer ground line on electric current " from scratch " variation, and the electric current become
Change is more obvious, is convenient for Arc detection.
Comparison module is using the electromotive force that Current Transmit winding is exported as input signal, for judging Current Mutual Inductance
Whether the electromotive force of device is greater than comparison reference.When being greater than comparison reference, the testing result signal struck sparks is exported.
Above-mentioned arcing detection circuit distinguishes the first conducting wire for being separately connected two vice-side windings of transformer and the second conducting wire
Iron core-closed across current transformer is grounded again, or so that first conducting wire and the second conducting wire is first connected then and be grounded jointly,
Since when striking sparks, the more apparent variation of " from scratch " occurs for the electric current on two vice-side winding ground lines, and above-mentioned
Set-up mode can sense when the more apparent variation, therefore be convenient for Arc detection.When sparking occurs so that two secondary sides around
When group ground line powers on the variation for life " from scratch " of miscarrying, electromotive force can accordingly be generated by being wound in the winding on iron core-closed,
Whether strike sparks to which comparison module can detect in insulation fuel tank according to the electromotive force of winding.Above-mentioned arcing detection circuit
And X-ray generator is not used voltage-stabiliser tube and is just able to detect that the spark phenomenon in insulation fuel tank using comparison module, and
The comparison accuracy of comparison module is higher, so that testing result is more accurate.
Above-mentioned comparison module can be CPU processing chip, handles chip by CPU and executes judgement operation；It is also possible to not
Comparison circuit comprising CPU processing chip.As a kind of optional embodiment of the latter, as shown in Figure 3 and Figure 4, comparison module
Including sampling resistor R10 and at least one comparator.The windings in series of sampling resistor R10 and Current Transmit.Comparator
Input terminal obtains the voltage at the both ends sampling resistor R10, and output end is for exporting the testing result signal struck sparks.Optionally,
As shown in figure 4, be additionally provided with rectification circuit between sampling resistor R10 and comparator, for by the both ends sampling resistor R10
Ac voltage signal is converted to d. c. voltage signal.
As the further optional embodiment of above-mentioned optional embodiment, comparator can be at least two, and each
The comparison reference of comparator is different.Comparison reference can be realized by the way that different peripheral circuits is arranged, and can also be passed through
Controller provides comparison reference.Pass through at least two comparators and its corresponding different reference values, it can be determined that change out
The size rank of electric current, and then judge the degree rank (such as belonging to slight sparking or acutely sparking) of spark phenomenon, in turn
Using different safeguard measures.
Embodiment two
The embodiment of the invention provides a kind of X-ray generator, including transformer, X-ray tube and embodiment one or
Arcing detection circuit described in its any optional embodiment.Wherein, transformer and X-ray tube are set in insulation fuel tank；And
And transformer has the first vice-side winding and the second vice-side winding, the first end of the first vice-side winding and the anode of X-ray tube connect
Connect, the cathode of the first end of the second vice-side winding and X-ray tube connects, connect the first vice-side winding second end the first conducting wire and
The second conducting wire for connecting the second vice-side winding second end is grounded.
Optionally, which further includes controller, is connect with the output end of comparison module, is penetrated for controlling X
Line generating device starts or stops operation.
Optionally, as shown in Figure 3 and Figure 4, comparison module includes sampling resistor and at least one comparator.Sampling resistor with
The windings in series of current transformer.The input terminal of comparator obtains the voltage at sampling resistor both ends, and output end is for exporting detection
Consequential signal.Specifically refer to embodiment one.X-ray generator further includes DA conversion circuit, with controller and comparator point
It does not connect, the conversion from digital signal to analog signal is realized, for providing ratio according to the control instruction of controller for comparator
Compared with reference value.
Comparison reference is provided for comparator by controller, comparison reference can be adjusted flexibly, to be adjusted flexibly
The degree rank judgment criteria of spark phenomenon.In addition, controller root can also be passed through when the device of comparator is affected by temperature
Comparison reference is adjusted in real time according to temperature change, no matter so that all more accurate for what temperature detection result.
Optionally, which further includes the first voltage-multiplying circuit and the second voltage-multiplying circuit.First voltage-multiplying circuit position
Between the first output end of the first vice-side winding and the anode of X-ray tube, for being that X-ray tube supplies after positive voltage boosts
Electricity.Second voltage-multiplying circuit is located between the first output end of the second vice-side winding and the cathode of X-ray tube, is used for negative voltage liter
It powers after pressure for X-ray tube.
Embodiment three
The embodiment of the invention provides a kind of Protection of arcing methods, are used for embodiment two or its any optional embodiment
The X-ray generator.As shown in figure 5, this method comprises the following steps:
S10: judge whether strike sparks in insulation fuel tank according to Arc detection consequential signal.Occur to beat when in insulation fuel tank
When fiery, step S20 is executed；Otherwise, unprotect operates.
S20: control X-ray generator is out of service.
" control X-ray generator is out of service " in the application can be turned off the power supply of X-ray generator,
It can be control controller and stop output pwm pulse, the pwm pulse is each in the H-bridge circuit for controlling transformer primary side can
Control switch.When stopping exporting pwm pulse, the voltage of primary transformer coil just no longer changes, thus without normal direction transformer pair
Transmit electric energy in side.
As a kind of optional embodiment of the present embodiment, strike sparks in insulation fuel tank as long as step S20 may is that,
Just control X-ray generator is out of service.
Alternatively, step S20 may be: when striking sparks in the fuel tank that insulate, judging that the intensity of Arc detection signal is
It is no to be greater than or equal to preset threshold；When the intensity of Arc detection signal is less than preset threshold, control X-ray generator is closed
It is reopened after first predetermined amount of time；Otherwise, control X-ray generator is closed and is no longer opened in the second predetermined amount of time
It opens, the second predetermined amount of time is greater than the first predetermined amount of time.The embodiment judges that spark phenomenon belongs to slight sparking still
Acutely sparking, and then different safeguard measures is used, so that both can guarantee safety in the case where slight sparking, additionally it is possible to
Guarantee that X-ray generator can be fully utilized.
Although being described in conjunction with the accompanying the embodiment of the present invention, those skilled in the art can not depart from the present invention
Spirit and scope in the case where various modifications and variations can be made, such modifications and variations are each fallen within by appended claims institute
Within the scope of restriction.
Claims (10)
1. a kind of arcing detection circuit of X-ray generator, which is characterized in that the transformer and X of the X-ray generator
Ray tube is set in insulation fuel tank；The transformer has the first vice-side winding and the second vice-side winding, the described first secondary side
The first end of winding is connect with the anode of the X-ray tube, the first end of second vice-side winding and bearing for the X-ray tube
Pole connection connects the first conducting wire and the second of connection the second vice-side winding second end of the first vice-side winding second end
Conducting wire is grounded；
The arcing detection circuit includes:
Current transformer, including iron core-closed and winding；Also, first conducting wire and second conducting wire are from the closure
First side of iron core passes through, and in iron core-closed second side ground connection or first conducting wire and second conducting wire
It is connected in the first iron core-closed side, the privates of stretching passes through described iron core-closed at tie point, and closes described
Close second side ground connection of iron core；
Comparison module, for judging whether the electromotive force of the current transformer winding is greater than comparison reference；Compare when being greater than
When reference value, the testing result signal struck sparks is exported.
2. the arcing detection circuit of X-ray generator according to claim 1, which is characterized in that the comparison module
Include:
Sampling resistor, the windings in series with the current transformer；
At least one comparator, input terminal obtain the voltage at the sampling resistor both ends, and output end is struck sparks for exporting
Testing result signal.
3. the arcing detection circuit of X-ray generator according to claim 1, which is characterized in that the comparator is
At least two, and the comparison reference of each comparator is different.
4. the arcing detection circuit of X-ray generator according to claim 2 or 3, which is characterized in that further include:
Rectified current is set between the sampling resistor and the comparator, for by the exchange at the sampling resistor both ends
Voltage signal is converted to d. c. voltage signal.
5. a kind of X-ray generator characterized by comprising
Transformer, X-ray tube are set in insulation fuel tank；The transformer has the first vice-side winding and the second vice-side winding,
The first end of first vice-side winding is connect with the anode of the X-ray tube, the first end of second vice-side winding and institute
The cathode connection for stating X-ray tube, connect the first conducting wire of the first vice-side winding second end and connect the described second secondary side around
Second conducting wire of group second end is grounded；
The described in any item arcing detection circuits of Claims 1-4.
6. X-ray generator according to claim 5, which is characterized in that further include:
Controller is connect with the output end of the comparison module, starts or stops fortune for controlling the X-ray generator
Row.
7. X-ray generator according to claim 6, which is characterized in that the comparison module includes:
Sampling resistor, the windings in series with the current transformer；
At least one comparator, input terminal obtain the voltage at the sampling resistor both ends, and output end is struck sparks for exporting
Testing result signal；The X-ray generator further include:
DA conversion circuit is separately connected with the controller and the comparator, for the control instruction according to the controller
Comparison reference is provided for the comparator.
8. X-ray generator according to claim 5, which is characterized in that further include:
First voltage-multiplying circuit is used between the first output end of first vice-side winding and the anode of the X-ray tube
It is the X-ray tube power supply after positive voltage is boosted；And/or
Second voltage-multiplying circuit is used between the first output end of second vice-side winding and the cathode of the X-ray tube
It is the X-ray tube power supply after negative voltage is boosted.
9. the Protection of arcing method of the described in any item X-ray generators of claim 5 to 8 characterized by comprising
Judge whether strike sparks in insulation fuel tank according to Arc detection consequential signal；
When striking sparks in the fuel tank that insulate, it is out of service to control the X-ray generator.
10. the Protection of arcing method of X-ray generator according to claim 9, which is characterized in that described to work as insulating oil
When striking sparks in case, the step out of service of X-ray generator described in controller includes:
When striking sparks in the fuel tank that insulate, judge whether the intensity of Arc detection signal is greater than or equal to preset threshold；
When the intensity of Arc detection signal is less than preset threshold, controls the X-ray generator and closed for the first predetermined time
It is reopened after section；Otherwise, it controls the X-ray generator to close and be not then turned in the second predetermined amount of time, described the
Two predetermined amount of time are greater than first predetermined amount of time.
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| CN201910045788.0A CN109688685B (en) | 2019-01-17 | 2019-01-17 | Ignition detection circuit of X-ray generating device and X-ray generating device |
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| CN201910045788.0A CN109688685B (en) | 2019-01-17 | 2019-01-17 | Ignition detection circuit of X-ray generating device and X-ray generating device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880055A (en) * | 2020-07-09 | 2020-11-03 | 上海联影医疗科技有限公司 | Sparking detection apparatus and method |
| CN113792781A (en) * | 2021-09-10 | 2021-12-14 | 西门子爱克斯射线真空技术(无锡)有限公司 | Method and device for evaluating performance of X-ray tube |
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| CN111880055B (en) * | 2020-07-09 | 2024-04-16 | 上海联影医疗科技股份有限公司 | Spark detection device and method |
| CN113792781A (en) * | 2021-09-10 | 2021-12-14 | 西门子爱克斯射线真空技术(无锡)有限公司 | Method and device for evaluating performance of X-ray tube |
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| CN109688685B (en) | 2020-08-28 |
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