High-voltage measurement divider

• US 9,817,033 B2
• Filed: 08/17/2015
• Issued: 11/14/2017
• Est. Priority Date: 08/22/2014
• Status: Active Grant

• Current Assignee: Siemens Healthineers AG (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Beyerlein, Walter, Eichhorn, Richard
• Primary Examiner(s): Nguyen, Vinh
• Application Number:
  US14/827,914
• Publication Number:
  US 20160054358A1
• Time in Patent Office: 820 Days
• CPC Class Codes: G01R 15/04 Voltage dividers
• CPC Class Codes: G01R 15/06 having reactive components, e.g. capacitive transformer
• CPC Class Codes: G01R 19/0084 measuring voltage only all subgroups of G01R19/00 take precedence
• CPC Class Codes: H05G 1/265 Measurements of current, voltage or power

Abstract

A high-voltage measurement divider for an X-ray tube is provided. The high-voltage measurement divider includes a ground connection, a high-voltage connection, a measuring tap, and divider modules of substantial identical design apart from the circuitry. Each of the divider modules has a first connection, a second connection, a resistor board, and at least one flat potential electrode. The divider modules are connected at corresponding connections in series between the ground connection and the high-voltage connection. At least one division stage is formed by each of the divider modules, and a first division stage is formed between the measuring tap and the ground connection.

Claims

1. A high-voltage measurement divider for an X-ray tube, the high-voltage measurement divider comprising:

a ground connection;

a high-voltage connection;

a measuring tap; and

a plurality of divider modules, the plurality of divider modules having a substantially identical design except for circuitry,

wherein each divider module of the plurality of divider modules comprises a first connection, a second connection, a resistor board, and at least one flat potential electrode, the first connection, the second connection, the resistor board, and the at least one flat potential electrode being in electrical communication with each other,

wherein the plurality of divider modules are connected in series between the ground connection and the high-voltage connection,

wherein, in a first divider module of the plurality of divider modules, the resistor board is interconnected to the measuring tap, the first divider module being the divider module of the plurality of divider modules closest to the ground connection,

wherein at least one division stage is formed by each divider module of the plurality of divider modules, and

wherein a first division stage of the at least one division stage is formed between the measuring tap and the ground connection.

2. The high-voltage measurement divider of claim 1, wherein the resistor board has a first end, a second end opposite the first end, and a tap point in each divider module of the plurality of divider modules,

wherein the tap point with respect to resistance per unit area of the resistor board is arranged in the vicinity of the first end, and

wherein the resistor board is interconnected with the first connection at the tap point or at the first end, is connected directly at the second end to a first base point of the at least one flat potential electrode, and is arranged with respect to the at least one flat potential electrode such that a capacitive coupling is produced.

3. The high-voltage measurement divider of claim 2, wherein the second connection is formed by a second base point of the at least one flat potential electrode, and

wherein the second base point is opposite the first base point in each divider module of the plurality of divider modules.

4. The high-voltage measurement divider of claim 2, wherein, in the first divider module of the plurality of divider modules, the resistor board is interconnected at the tap point to the measuring tap, and is interconnected at the first end to the first connection, and

wherein the first connection is connected directly to the ground connection.

5. The high-voltage measurement divider of claim 3, wherein, in the first divider module of the plurality of divider modules, the resistor board is interconnected at the tap point to the measuring tap, and is interconnected at the first end to the first connection, and

wherein the first connection is connected directly to the ground connection.

6. The high-voltage measurement divider of claim 4, wherein the resistor board of the first divider module of the plurality of divider modules is connected at the tap point directly to a free potential electrode,

wherein the free potential electrode, facing away from the first divider module of the plurality of divider modules, is in electrical communication with the resistor board of the first divider module of the plurality of divider modules and arranged with respect to the resistor board of the first divider module of the plurality of divider modules such that a capacitive coupling is produced.

7. The high-voltage measurement divider of claim 6, wherein a capacitive coupling exists between in each case two series-connected divider modules of the plurality of divider modules via arrangement of the at least one flat potential electrode of a divider module of the plurality of divider modules with respect to the resistor board of the following divider module of the plurality of divider modules.

8. The high-voltage measurement divider of claim 6, wherein the free potential electrode, facing away from the first divider module of the plurality of divider modules, is shielded by a flat shielding electrode that is connected directly to the ground connection.

9. The high-voltage measurement divider of claim 7, wherein the free potential electrode, facing away from the first divider module of the plurality of divider modules, is shielded by a flat shielding electrode that is connected directly to the ground connection.

10. The high-voltage measurement divider of claim 4, wherein each divider module of the plurality of divider modules includes a further potential electrode,

wherein each further potential electrode is connected at a base point directly to the tap point or the first end of each resistor board of each divider module of the plurality of divider modules, is in electrical communication with each resistor board of each divider module of the plurality of divider modules, and is arranged with respect to each resistor board of each divider module of the plurality of divider modules, respectively, such that a capacitive coupling is produced.

11. The high-voltage measurement divider of claim 10, wherein the resistor board of the first divider module with respect to the ground connection is connected at the tap point to the base point of the further potential electrode.

12. The high-voltage measurement divider of claim 11, wherein each divider module of the plurality of divider modules is shielded by a flat shielding electrode that is connected directly to the first connection of each divider module of the plurality of divider modules and is in electrical communication with each resistor board of each divider module of the plurality of divider modules, respectively.