Devices and methods for arcing detection

Patent metadata

Field	Value
Publication number	US-11650242-B2
Application number	US-202117305538-A
Country	US
Kind code	B2
Filing date	Jul 9, 2021
Priority date	Jul 9, 2020
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

The present disclosure provides an arcing detection device. The arcing detection device may include a detection coil and a processing circuit operably connected to the detection coil. The detection coil may be configured to detect a current variation of a system. The processing circuit may be configured to determine information of an arcing event of the system based on the current variation of the system. The information of the arcing event of the system may include a position where the arcing event occurs in the system.

First claim

What is claimed is:

1. An arcing detection device, comprising:
a detection coil configured to detect a current variation of a system; and
a processing circuit operably connected to the detection coil, wherein the processing circuit is configured to determine information of an arcing event of the system based on the current variation of the system, the information of the arcing event of the system comprising a position where the arcing event occurs in the system, wherein the system includes an X-ray system comprising:
an X-ray tube configured to emit an X-ray beam; and
a high-voltage tank configured to generate a high voltage, the high voltage being applied to the X-ray tube to provide power to the X-ray tube, the detection coil being located between the high-voltage tank and the X-ray tube.

2. The arcing detection device of claim 1 , wherein the information of the arcing event further includes whether the arcing event of the system is a small arcing event or a big arcing event.

3. The arcing detection device of claim 2 , wherein the processing circuit includes a comparison circuit configured to:
generate a comparison result by comparing the current variation of the system with one or more current variation thresholds; and
determine the information of the arcing event of the system based on the comparison result.

4. The arcing detection device of claim 3 , wherein
the comparison circuit includes a first comparator of a first current variation threshold and a second comparator of a second current variation threshold;
the first comparator and the second comparator are configured to compare the current variation with the first current variation threshold and the second current variation threshold, respectively, the first current variation threshold being lower than the second current variation threshold;
in response to determining that the current variation is higher than the first current variation threshold and lower than the second current variation threshold, the comparison circuit determines that the small arcing event occurs in the system;
in response to determining that the current variation is higher than the second current variation threshold, the comparison circuit determines that the big arcing event occurs in the system.

5. The arcing detection device of claim 3 , wherein
the processing circuit includes a transformer, a first end of which is operably connected to the detection coil, and a second end of which is operably connected to the comparison circuit; and
the transformer is configured to insulate a signal associated with the current variation from a magnetic field generated by the arcing event of the system and transmit the signal to the comparison circuit.

6. The arcing detection device of claim 1 , wherein the detection coil includes a winding material and a framework configured to support the winding material.

7. The arcing detection device of claim 6 , wherein the winding material includes a winding wire or a winding laying.

8. The arcing detection device of claim 6 , wherein the winding material is wound, by multiple turns, from a first position of the framework to a second position of the framework.

9. The arcing detection device of claim 8 , wherein the winding material is further wound, on a central region of the framework, from the second position to the first position along a circumferential direction of the framework.

10. The arcing detection device of claim 9 , wherein
the framework has a cross-section of an annular shape formed by an outer ring and an inner ring; and
the central region of the frame is midway between the outer ring and the inner ring of the framework such that a deviation of a centerline of the central region of the framework from a centerline of the framework is below a threshold.

11. The arcing detection device of claim 1 , further comprising a casing configured to accommodate the detection coil.

12. The arcing detection device of claim 1 , wherein
the detection coil is operably connected to a high-voltage connection assembly configured to operably connect the detection coil to the system; and
the high-voltage connection assembly includes at least one of a plug, a socket, or a flange.

13. The arcing detection device of claim 1 , wherein
the high-voltage tank comprising a high-voltage connection assembly configured to operably connect the detection coil to the X-ray system; and
in response to determining that the arcing event occurs in the system based on the current variation detected by the detection coil, the arcing event is determined to occur in the X-ray tube or a high-voltage cable operably connecting the high-voltage tank and the X-ray tube.

14. The arcing detection device of claim 1 , wherein
the X-ray tube includes a high-voltage connection assembly configured to operably, connect the detection coil to the X-ray system; and
in response to determining that the arcing event occurs in the system based on the current variation detected by the detection coil, the arcing event is determined to occur in the X-ray tube.

15. The arcing detection device of claim 1 , wherein
the detection coil includes a first detection coil located at a high-voltage connection assembly of the high-voltage tank and a second detection coil located at a high-voltage connection assembly of the X-ray tube; and
in response to determining that the arcing event occurs in the system based on a current variation detected by the first detection coil and no arcing event occurs in the system based on a current variation detected by the second detection coil, the arcing event is determined to occur in a high-voltage cable that operably connects the high-voltage tank and the X-ray tube.

16. The arcing detection device of claim 1 , wherein
the detection coil includes a first detection coil located at a high-voltage connection assembly of the high-voltage tank and a second detection coil located at lead of an arcing suppression unit of the high-voltage tank; and
in response to determining that the arcing event occurs in the system based on a current variation detected by the second detection coil and no arcing event occurs in the system based on a current variation detected by the first detection coil, the arcing event is determined to occur in the high-voltage connection assembly of the high-voltage tank.

17. The arcing detection device of claim 1 , wherein
the detection coil includes a first detection coil located at a lead of an arcing suppression unit of the high-voltage tank and a second detection coil located at a lead of a filter capacitor of the high-voltage tank; and
in response to determining that the arcing event occurs in the system based on a current variation detected by the second detection coil and no arcing event occurs in the system based on a current variation detected by the first detection coil, the arcing event is determined to occur in the arcing suppression unit of the high-voltage tank.

18. The arcing detection device of claim 1 , wherein
in response to determining that an electric current detected by a current detection unit of the high-voltage tank is larger than a first current threshold and smaller than a second current threshold, the arcing event is determined to occur in a high-voltage connection assembly of the high-voltage tank.

19. A detection coil, comprising:
a winding material; and
a framework configured to support the winding material, wherein
the winding material is wound, by multiple turns, from a first position of the framework to a second positi

Assignees

• Shanghai United Imaging Healthcare Co Ltd

Inventors

• Chen Siming
• Zhu Guoping
• Wu Jinglin
• Luo Biao
• Chu Xu

Classifications

• G01R19/0092

  Measuring current only · CPC title

• G01R31/14 Primary

  Circuits therefor {, e.g. for generating test voltages, sensing circuits (G01R31/1209 - G01R31/1227 take precedence; for testing switches G01R31/327)} · CPC title

• G01R15/181

  using coils without a magnetic core, e.g. Rogowski coils · CPC title

• G01R31/1227 Primary

  of components, parts or materials (G01R31/1209, G01R31/1218, G01R31/18 take precedence; circuits therefor G01R31/14; testing vessels of electrodes G01R31/16) · CPC title

• H01J35/02

  Details · CPC title