CN117156654A - Pulse X-ray generating device and radiographic imaging equipment - Google Patents
Pulse X-ray generating device and radiographic imaging equipment Download PDFInfo
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- CN117156654A CN117156654A CN202311321935.5A CN202311321935A CN117156654A CN 117156654 A CN117156654 A CN 117156654A CN 202311321935 A CN202311321935 A CN 202311321935A CN 117156654 A CN117156654 A CN 117156654A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 239000004065 semiconductor Substances 0.000 claims description 12
- 230000005855 radiation Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 abstract description 9
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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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
- H05G1/10—Power supply arrangements for feeding the X-ray tube
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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
- H05G1/10—Power supply arrangements for feeding the X-ray tube
- H05G1/22—Power supply arrangements for feeding the X-ray tube with single pulses
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Abstract
The invention relates to the technical field of high-voltage pulse, and discloses a pulse X-ray generating device and a ray imaging device, wherein the X-ray generating device comprises: direct current high voltage circuit, spiral transmission line, quick discharge switch and pulse X ray tube, wherein: the direct-current high-voltage circuit is used for converting the voltage of an external power supply into direct-current high voltage and transmitting the direct-current high voltage to the quick discharge switch; when the quick discharging switch is closed, the spiral transmission line converts direct current high voltage into high voltage pulse voltage and transmits the high voltage pulse voltage to the pulse X-ray tube, so that the pulse X-ray tube generates pulse X-rays. The rapid discharge switch, the spiral transmission line and the pulse X-ray tube are small in size and light in weight, and the generated pulse X-ray has strong penetrating power, so that the problems of larger size and lower voltage level of an X-ray source used in the open air or a narrow space are solved.
Description
Technical Field
The invention relates to the technical field of high-voltage pulses, in particular to a pulse X-ray generating device and a ray imaging device.
Background
The X-ray source (namely X-ray), also called Ronchi ray, axray, aiksray or Ronchi light, is widely applied to nondestructive testing industries such as electric power, oil gas pipelines and the like. In these applications, especially in outdoor or narrow spaces, it is desirable to use a light-weight X-ray source with strong X-ray transmission, but the conventional X-ray source is mainly a continuous X-ray source, or a digital X-ray source, and whether the continuous X-ray source or the digital X-ray source is a continuous X-ray source, or the digital X-ray source has a relatively large volume, a relatively heavy weight (for example, not less than 10 kg), and a relatively low voltage level (not more than 150 kV), so that the requirements of the existing nondestructive testing industries such as electric power, oil gas pipelines and the like in outdoor or narrow spaces are difficult to meet.
Disclosure of Invention
In view of the above, the present invention provides a pulsed X-ray generating device and a radiation imaging apparatus, so as to solve the problems of larger volume and lower voltage level of an X-ray source used in the open air or in a narrow space.
In a first aspect, the present invention provides a pulsed X-ray generation apparatus comprising: direct current high voltage circuit, spiral transmission line, quick discharge switch and pulse X ray tube, wherein:
one end of the direct-current high-voltage circuit is connected with an external power supply, and the other end of the direct-current high-voltage circuit is connected with one end of the quick discharge switch; the other end of the rapid discharge switch is connected with one end of a spiral transmission line, and the other end of the spiral transmission line is connected with a pulse X-ray tube;
the direct-current high-voltage circuit is used for converting the voltage of an external power supply into direct-current high voltage and transmitting the direct-current high voltage to the quick discharge switch; when the quick discharging switch is closed, the spiral transmission line converts direct current high voltage into high voltage pulse voltage and transmits the high voltage pulse voltage to the pulse X-ray tube, so that the pulse X-ray tube generates pulse X-rays.
The invention provides a pulse X-ray generating device, a direct-current high-voltage circuit converts a power supply signal of an external power supply into direct-current high voltage and transmits the direct-current high voltage to a quick discharge switch, the other end of the quick discharge switch is connected with one end of a spiral transmission line, and the other end of the spiral transmission line is connected with a pulse X-ray tube; when the quick discharging switch is closed, the spiral transmission line converts direct current high voltage into high voltage pulse voltage and transmits the high voltage pulse voltage to the pulse X-ray tube, so that the pulse X-ray tube generates pulse X-rays, the quick discharging switch, the spiral transmission line and the pulse X-ray tube are small in size and light in weight, and the generated pulse X-rays are strong in penetrating power, so that the problems of large size and low voltage level of an X-ray source used in the open air or a narrow space are solved.
In an alternative embodiment, the dc high voltage circuit includes: a control sub-circuit, a drive sub-circuit, a DC/AC sub-circuit, a step-up transformer, and a rectifier sub-circuit;
the first end of the control sub-circuit is connected with one end of an external power supply, the second end of the control sub-circuit is connected with one end of the driving sub-circuit, the third end of the control sub-circuit is connected with the first end of the rectifier sub-circuit, the control sub-circuit obtains a direct-current high-voltage feedback signal from the rectifier sub-circuit to perform direct-current high-voltage closed-loop control, the control sub-circuit is used for sending a conduction control signal to the driving sub-circuit, and the control sub-circuit obtains auxiliary power supply from the external power supply;
the first end of the DC/AC sub-circuit is used as one end of the direct-current high-voltage circuit and is connected with the other end of the external power supply, the second end of the DC/AC sub-circuit is connected with the other end of the driving sub-circuit, the third end of the DC/AC sub-circuit is connected with one end of the step-up transformer, and the DC/AC sub-circuit is used for converting a power supply signal of the external power supply into high-frequency alternating-current voltage;
the other end of the step-up transformer is connected with the second end of the rectifier circuit, the third end of the rectifier circuit is used as the other end of the direct-current high-voltage circuit, one end of the spiral transmission line is connected through the double cables, the step-up transformer is used for boosting high-frequency alternating-current voltage and then transmitting the boosted high-frequency alternating-current voltage to the rectifier circuit, and the rectifier circuit is used for rectifying the boosted high-frequency alternating-current voltage and then outputting direct-current high voltage.
The pulse X-ray generating device provided by the invention has the advantages that after the control sub-circuit in the direct-current high-voltage circuit sends the conduction control signal to the driving sub-circuit, the DC/AC sub-circuit, the step-up transformer and the rectifying sub-circuit are sequentially connected, the voltage of an external power supply is converted into direct-current high voltage, and the direct-current high voltage is transmitted to the rapid discharge switch, so that a voltage foundation is provided for the subsequent generation of high-frequency pulse voltage.
In an alternative embodiment, the DC/AC sub-circuit includes: a power semiconductor device;
the driving sub-circuit receives the on control signal and then drives the power semiconductor device to be turned on or turned off so as to output high-frequency alternating voltage and transmit the high-frequency alternating voltage to the step-up transformer.
The pulse X-ray generating device provided by the invention drives the power semiconductor device to be turned on or turned off after the driving sub-circuit receives the on control signal so as to output high-frequency alternating voltage and transmit the high-frequency alternating voltage to the step-up transformer, thereby providing a foundation for the subsequent output of direct-current high voltage. The control sub-circuit sends a conduction control signal to the driving sub-circuit to drive the DC/AC sub-circuit power semiconductor device to be turned on or turned off, so that the correct triggering of the DC/AC sub-circuit power semiconductor device to be turned on or turned off is ensured.
In an alternative embodiment, the pulsed X-ray generation apparatus further comprises: and one end of the feedback circuit is connected with the fourth end of the rectifier sub-circuit, the other end of the feedback circuit is connected with the fourth end of the control sub-circuit, the feedback circuit detects the direct-current high voltage and then generates feedback voltage, and the control sub-circuit controls the high-frequency alternating-current voltage output by the DC/AC sub-circuit based on the feedback voltage.
The pulse X-ray generating device provided by the invention detects the direct current high voltage through the feedback circuit, and utilizes the control sub-circuit to control the high-frequency alternating current voltage output by the DC/AC sub-circuit based on the feedback voltage, thereby realizing the closed-loop control of the direct current high-voltage circuit.
In an alternative embodiment, the pulsed X-ray tube is a cold cathode pulsed X-ray tube.
The cold cathode pulse X-ray tube adopted by the pulse X-ray generating device provided by the invention has the advantages of small volume, light weight and strong penetration of emitted pulse X-rays.
In an alternative embodiment, the quick discharge switch comprises: self-breakdown switches or active discharge switches.
The pulse X-ray generating device provided by the invention adopts the self-breakdown switch or the active discharge switch to have the characteristic of rapidly discharging electric energy, and provides electric energy for generating high-voltage pulse voltage for a follow-up spiral transmission line.
In an alternative embodiment, the voltage amplitude and pulse width of the high voltage pulse voltage output by the spiral transmission line are controlled by the closing time of the rapid discharge switch.
The pulse X-ray generating device provided by the invention realizes the control of the voltage amplitude and the pulse width of the high-voltage pulse voltage output by the spiral transmission line through the control of the closing time of the rapid discharge switch.
In an alternative embodiment, the pulsed X-ray generation apparatus further comprises: the power supply is provided with one end connected with the first end of the DC/AC sub-circuit, and the other end connected with the first end of the control sub-circuit; the power supply is used to power the DC/AC sub-circuit and the control sub-circuit.
The pulse X-ray generating device provided by the invention realizes the purpose of supplying power to the DC/AC sub-circuit and the control sub-circuit through the power supply.
In a second aspect, the present invention provides a radiation imaging apparatus comprising: the pulsed X-ray generation apparatus of the first aspect or any one of its corresponding embodiments described above.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a pulsed X-ray generation apparatus according to an embodiment of the present invention;
FIG. 2 is a block diagram of another pulsed X-ray generation apparatus in accordance with an embodiment of the present invention;
FIG. 3 is a block diagram of a still further pulsed X-ray generation apparatus in accordance with an embodiment of the present invention;
fig. 4 is a block diagram of a radiation imaging apparatus according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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 should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other. In the present embodiment, there is provided a pulsed X-ray generating apparatus, fig. 1 is a block diagram of a pulsed X-ray generating apparatus according to an embodiment, as shown in fig. 1, a dc high voltage circuit 14, a spiral transmission line 11, a rapid discharge switch 12, and a pulsed X-ray tube 13, wherein: one end of the direct-current high-voltage circuit 14 is connected with an external power supply, the other end of the direct-current high-voltage circuit 14 is connected with one end of the rapid discharge switch 12, the other end of the rapid discharge switch 12 is connected with one end of the spiral transmission line 11, and the other end of the spiral transmission line 11 is connected with the pulse X-ray tube 13; the dc high voltage circuit 14 is configured to convert the voltage of the external power supply into a dc high voltage and transmit the dc high voltage to the rapid discharge switch 12, and when the rapid discharge switch 12 is closed, the spiral transmission line 11 converts the dc high voltage into a high voltage pulse voltage and transmits the high voltage pulse voltage to the pulse X-ray tube 13, so that the pulse X-ray tube 13 generates pulse X-rays.
The direct current high voltage can be 10KV-220KV, and the voltage to ground is a high voltage signal above 250V. In a DC system, 550V is the high voltage. In an alternating current system, 3KV, 6KV, 10KV, 35KV and the like belong to high voltage.
Specifically, one end of the dc high voltage circuit 14 is connected to an external power supply, the other end of the dc high voltage circuit 14 is connected to one end of the rapid discharge switch 12, the rapid discharge switch 12 is connected to the spiral transmission line 11 through a two-cable, the pulsed X-ray tube includes an anode and a cathode, and the spiral transmission line 11 is connected to the cathode and the anode of the pulsed X-ray tube through the two-cable, respectively. When the dc high voltage circuit 14 converts the voltage of the external power supply into a dc high voltage, the dc high voltage is transmitted to the rapid discharge switch 12, and when the rapid discharge switch is closed, the dc high voltage is transmitted to the spiral transmission line, so that the spiral transmission line converts the dc high voltage into a high voltage pulse voltage, and the high voltage pulse voltage is applied between the anode and the cathode of the pulse X-ray tube, so that the pulse X-ray tube generates the pulse X-ray.
In the pulse X-ray generating device provided by the embodiment of the invention, one end of the rapid discharge switch is input with direct-current high voltage, the other end of the rapid discharge switch is connected with one end of a spiral transmission line, and the other end of the spiral transmission line is connected with a pulse X-ray tube; when the quick discharging switch is closed, the spiral transmission line converts direct current high voltage into high voltage pulse voltage and transmits the high voltage pulse voltage to the pulse X-ray tube, so that the pulse X-ray tube generates pulse X-rays, the quick discharging switch, the spiral transmission line and the pulse X-ray tube are small in size and light in weight, and the generated pulse X-rays are strong in penetrating power, so that the problems of large size and low voltage level of an X-ray source used in the open air or a narrow space are solved.
In an alternative embodiment, as shown in fig. 2, the dc high voltage circuit 14 includes: a control sub-circuit 141, a drive sub-circuit 142, a DC/AC sub-circuit 143, a step-up transformer 144, and a rectifier sub-circuit 145.
Specifically, as shown in fig. 2, a first end of the control sub-circuit 141 is connected to one end of an external power supply, a second end of the control sub-circuit 141 is connected to one end of the driving sub-circuit 142, a third end of the control sub-circuit 141 is connected to a first end of the rectifier sub-circuit 145, the control sub-circuit 141 obtains a feedback signal of a dc high voltage from the rectifier sub-circuit to perform closed loop control of the dc high voltage, and is used for sending a conduction control signal to the driving sub-circuit 142, and the control sub-circuit 141 obtains auxiliary power from the external power supply.
Specifically, as shown in fig. 2, a first end of the DC/AC sub-circuit 143 is used as one end of the DC high voltage circuit and is connected to the other end of the external power supply, a second end of the DC/AC sub-circuit 143 is connected to the other end of the driving sub-circuit, a third end of the DC/AC sub-circuit 143 is connected to one end of the step-up transformer 144, and the DC/AC sub-circuit 143 is used for converting the voltage of the external power supply into a high frequency AC voltage.
Specifically, as shown in fig. 2, the other end of the step-up transformer 144 is connected to the second end of the rectifier circuit 145, the third end of the rectifier circuit 145 is used as the other end of the dc high voltage circuit, and is connected to one end of the spiral transmission line 11 through a dual cable, the step-up transformer 144 is used for boosting the high-frequency ac voltage and transmitting the boosted ac voltage to the rectifier circuit 145, and the rectifier circuit 145 is used for rectifying the boosted high-frequency ac voltage and outputting the dc high voltage.
By way of example, high frequency alternating current refers to alternating current having a frequency greater than 100 kilohertz (100,000 hertz) referred to as high frequency current.
Specifically, the DC/AC sub-circuit 143 may include: a power semiconductor device; the driving sub-circuit 142 receives the on control signal and then drives the power semiconductor device to be turned on or off so as to output a high-frequency ac voltage and transmit the high-frequency ac voltage to the step-up transformer. The step-up transformer 144 steps up the high-frequency ac voltage and transmits the stepped-up high-frequency ac voltage to the rectifier circuit 145, and the rectifier circuit 145 rectifies the stepped-up high-frequency ac voltage and outputs a dc high voltage.
The pulse X-ray generating device provided by the embodiment of the invention is used for converting the voltage of an external power supply into direct-current high voltage after the control sub-circuit in the direct-current high-voltage circuit is used for sending the conduction control signal to the driving sub-circuit and the DC/AC sub-circuit, the step-up transformer and the rectifier sub-circuit are sequentially connected, and transmitting the direct-current high-voltage signal to the rapid discharge switch, so that a voltage foundation is provided for the subsequent generation of high-frequency pulse voltage. The driving sub-circuit receives the on control signal and then drives the power semiconductor device to be turned on or turned off so as to output high-frequency alternating voltage and transmit the high-frequency alternating voltage to the step-up transformer, thereby providing a basis for the subsequent output of direct-current high voltage. The control sub-circuit sends a conduction control signal to the driving sub-circuit to drive the DC/AC sub-circuit power semiconductor device to be turned on or turned off, so that the correct triggering of the DC/AC sub-circuit power semiconductor device to be turned on or turned off is ensured. The adopted cold cathode pulse X-ray tube has the advantages of small volume, light weight and strong penetration of the emitted pulse X-rays. The self-breakdown switch or the active discharge switch has the characteristic of rapidly discharging the electric energy, and provides the electric energy for generating high-voltage pulse voltage for the follow-up spiral transmission line.
In an alternative embodiment, as shown in fig. 3, the pulsed X-ray generation apparatus further includes: and a feedback circuit 15, wherein one end of the feedback circuit 15 is connected to the fourth end of the rectifier sub-circuit 145, the other end of the feedback circuit 15 is connected to the fourth end of the control sub-circuit 141, the feedback circuit 15 detects the DC high voltage and generates a feedback voltage, and the control sub-circuit 141 controls the high frequency AC voltage outputted from the DC/AC sub-circuit 143 based on the feedback voltage.
Specifically, the feedback circuit includes an amplifier, a dc high voltage is input to the amplifier of the feedback circuit, the dc high voltage is used as a reference voltage, the reference voltage is subtracted from the feedback voltage to generate an error signal, the error signal is amplified by the amplifier in the feedback circuit and then fed back to the input end of the amplifier, a new feedback voltage is generated after the amplification by the amplifier, the process is continuously circulated, and then the PI, PID or other controllers are utilized to realize closed-loop adjustment of the dc high voltage until the error between the amplified output signal (i.e., the feedback voltage) and the input signal (i.e., the dc high voltage) approaches zero, so that the dc high voltage reaches a stable state, and closed-loop control of the dc high voltage is realized.
In an alternative embodiment, the pulsed X-ray tube is a cold cathode pulsed X-ray tube. The fast discharge switch may be a self-breakdown switch or an active discharge switch. The voltage amplitude and pulse width of the high-voltage pulse voltage output by the spiral transmission line are controlled by the closing time of the quick discharging switch.
Specifically, by controlling the closing time of the rapid discharge switch, control of the output pulse voltage amplitude and pulse width of the high-voltage pulse voltage output by the spiral transmission line is achieved. The pulse width can be tens of nanoseconds to microseconds, and the pulse voltage amplitude can be hundreds of kilovolts at the highest.
The pulse X-ray generating device provided by the embodiment of the invention has the advantages of small volume, light weight, strong penetrating power of the emitted pulse X-ray and high amplitude of output pulse voltage which can reach hundreds of kilovolts. The pulse voltage amplitude and the pulse width of the output high-voltage pulse voltage are controllable, so that the reliability of the pulse X-ray source is improved.
In an alternative embodiment, as shown in fig. 3, the pulsed X-ray generation apparatus further includes: a power supply 16, one end of the power supply 16 is connected to the first end of the DC/AC sub-circuit 143, and the other end of the power supply 16 is connected to the first end of the control sub-circuit 141; the power supply 16 is used to power the DC/AC sub-circuits and the control sub-circuits.
Specifically, the power supply can be used as an external power supply, and can be a direct current power supply, a battery or an alternating current-direct current power supply. The purpose of supplying power to the DC/AC sub-circuit and the control sub-circuit is achieved through a power supply.
The present embodiment provides a radiation imaging apparatus, as shown in fig. 4, including: the pulsed X-ray generator shown in fig. 1 to 3 above. The above further functional description is the same as that of the above corresponding embodiment, and will not be repeated here.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (9)
1. A pulsed X-ray generation apparatus, the apparatus comprising: direct current high voltage circuit, spiral transmission line, quick discharge switch and pulse X ray tube, wherein:
one end of the direct-current high-voltage circuit is connected with an external power supply, and the other end of the direct-current high-voltage circuit is connected with one end of the rapid discharge switch; the other end of the rapid discharge switch is connected with one end of the spiral transmission line, and the other end of the spiral transmission line is connected with the pulse X-ray tube;
the direct-current high-voltage circuit is used for converting the voltage of an external power supply into direct-current high voltage and transmitting the direct-current high voltage to the rapid discharge switch; when the rapid discharge switch is closed, the spiral transmission line converts direct current high voltage into high voltage pulse voltage and transmits the high voltage pulse voltage to the pulse X-ray tube, so that the pulse X-ray tube generates pulse X-rays.
2. The apparatus of claim 1, wherein the dc high voltage circuit comprises: a control sub-circuit, a drive sub-circuit, a DC/AC sub-circuit, a step-up transformer, and a rectifier sub-circuit;
the control sub-circuit acquires a feedback signal of direct current high voltage from the rectifier sub-circuit to perform closed loop control of the direct current high voltage and is used for sending a conduction control signal to the driving sub-circuit, and the control sub-circuit acquires auxiliary power supply from the external power supply;
the first end of the DC/AC sub-circuit is used as one end of the direct current high-voltage circuit and is connected with the other end of the external power supply, the second end of the DC/AC sub-circuit is connected with the other end of the driving sub-circuit, the third end of the DC/AC sub-circuit is connected with one end of a step-up transformer, and the DC/AC sub-circuit is used for converting the voltage of the external power supply into high-frequency alternating current voltage;
the other end of the step-up transformer is connected with the second end of the rectifier circuit, the third end of the rectifier circuit is used as the other end of the direct current high-voltage circuit, one end of the spiral transmission line is connected through a double cable, the step-up transformer is used for boosting the high-frequency alternating current voltage and then transmitting the boosted high-frequency alternating current voltage to the rectifier circuit, and the rectifier circuit is used for rectifying the boosted high-frequency alternating current voltage and then outputting direct current high voltage.
3. The apparatus of claim 2, wherein the DC/AC sub-circuit comprises: a power semiconductor device;
and the driving sub-circuit receives the on control signal and then drives the power semiconductor device to be turned on or turned off so as to output high-frequency alternating voltage and transmit the high-frequency alternating voltage to the step-up transformer.
4. The apparatus of claim 2, wherein the apparatus further comprises: and one end of the feedback circuit is connected with the fourth end of the rectifier circuit, the other end of the feedback circuit is connected with the fourth end of the control sub-circuit, the feedback circuit detects the direct-current high voltage and then generates feedback voltage, and the control sub-circuit controls the high-frequency alternating-current voltage output by the DC/AC sub-circuit based on the feedback voltage.
5. The apparatus of claim 1, wherein the pulsed X-ray tube is a cold cathode pulsed X-ray tube.
6. The apparatus of claim 1, wherein the rapid discharge switch comprises: self-breakdown switches or active discharge switches.
7. The apparatus of claim 1, wherein the voltage amplitude and pulse width of the high voltage pulse voltage output by the spiral transmission line are controlled by the closing time of the rapid discharge switch.
8. The apparatus of claim 2, wherein the apparatus further comprises: one end of the power supply is connected with the first end of the DC/AC sub-circuit, and the other end of the power supply is connected with the first end of the control sub-circuit; the power supply is used for supplying power to the DC/AC sub-circuit and the control sub-circuit.
9. A radiation imaging apparatus, comprising: the pulsed X-ray generation apparatus of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311321935.5A CN117156654A (en) | 2023-10-12 | 2023-10-12 | Pulse X-ray generating device and radiographic imaging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311321935.5A CN117156654A (en) | 2023-10-12 | 2023-10-12 | Pulse X-ray generating device and radiographic imaging equipment |
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| Publication Number | Publication Date |
|---|---|
| CN117156654A true CN117156654A (en) | 2023-12-01 |
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| CN202311321935.5A Pending CN117156654A (en) | 2023-10-12 | 2023-10-12 | Pulse X-ray generating device and radiographic imaging equipment |
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| CN (1) | CN117156654A (en) |
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