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Computer tomography (CT) equipment and method for discharging direct current link in CT equipment

A technology of DC link and equipment, applied in the direction of computed tomography scanner, echo tomography, etc., to achieve the effect of fast discharge and low cost

Inactive Publication Date: 2014-01-22
SIEMENS SHANGHAI MEDICAL EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no patent application discloses how to achieve rapid discharge technology, and no patent application mentions how to perform rapid discharge technology on the DC link in high-speed rotating CT equipment

Method used

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  • Computer tomography (CT) equipment and method for discharging direct current link in CT equipment
  • Computer tomography (CT) equipment and method for discharging direct current link in CT equipment
  • Computer tomography (CT) equipment and method for discharging direct current link in CT equipment

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Embodiment Construction

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.

[0034] figure 2 A schematic diagram of a DC link in a high-speed rotating CT device. like figure 2 As shown, the DC link 200 includes a rectifier circuit 210, two energy storage capacitors C, and a resistor R with high resistance. Among them, the rectifier circuit 210 is used to convert the input three-phase AC power into DC power, the capacitor C is mainly used for energy storage and filtering, and the voltage monitoring circuit is used to monitor the DC voltage output by the DC link, which is equivalent to a resistor R in the figure, with very high resistance. Finally, the DC link 200 outputs a DC voltage at its output terminals, ie, the DC output positive and negative poles DC+ and DC-.

[0035] from figure 2 It can be seen that the DC link 200 does not have figure 1 Relay K ...

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PUM

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Abstract

The invention discloses computer tomography (CT) equipment. The CT equipment comprises an X-ray tube and a direct current link which provides high voltage for the X-ray tube through a high voltage generator; the CT equipment also comprises an energy consumption device which is connected with an output end of the direct current link; and the energy consumption device runs for a certain period of time when the direct current link is needed to be discharged so as to consume the energy of the direct current link. The invention also discloses a method for discharging the direct current link in the CT equipment. According to the technical scheme, the direct current link can be discharged quickly.

Description

technical field [0001] The invention relates to the field of computer X-ray tomography (CT) equipment, in particular to the technology for discharging a DC link (DC-Link) in the CT equipment. Background technique [0002] Today, CT equipment has been more and more widely used. When overhauling CT equipment, in addition to turning off the main power supply of the CT equipment, it is also necessary to wait for the electrical device in the CT equipment to fully discharge before opening the shell of the CT equipment to ensure the safety of maintenance personnel and CT equipment. Among them, the electrical devices that need to be discharged by the rotating part of the CT equipment include the DC link. [0003] For low-speed rotating CT equipment, the DC link includes a relay to discharge the DC link. figure 1 A DC link 800 of a CT device rotating at low speed is shown. like figure 1 As shown, the DC link 800 includes a rectifier circuit 810, two energy storage capacitors C, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
Inventor δΈι‡‘εŽ
Owner SIEMENS SHANGHAI MEDICAL EQUIP LTD