Beryllium sheet packaging structure of X-ray tube

Abstract

The invention belongs to the technical field of X-ray tube preparation, and particularly relates to a beryllium sheet packaging structure of an X-ray tube, which comprises an anode seat (1), a beryllium window mounting seat (4), a beryllium sheet (8) and a rubber sealing ring (9), wherein an X-ray outlet hole (3) penetrating through the anode seat (1) is formed in the middle in the anode seat (1),one end of the X-ray outlet hole (3) is arranged on the inclined plane side of the anode seat (1), and a circular groove (2) and a plurality of mounting holes (7) are formed in the inclined plane side; the circular groove (2) is sleeved outside the X-ray outlet hole (3), the plurality of mounting holes (7) are uniformly distributed at four corners of the circular groove (2), the middle part of the inner wall of the beryllium window mounting seat (4) is provided with a concave platform positioning surface (5), and a beryllium sheet (8) is placed in the concave platform positioning surface (5)and correspondingly arranged in the circular groove (2); the rubber sealing ring (9) is arranged in the circular groove (2); any welding operation on the beryllium sheet 8 is not needed.

Description

technical field [0001] The invention belongs to the technical field of X-ray tube preparation required by equipment such as industrial detection and medical CT, and in particular relates to a beryllium sheet packaging structure of the X-ray tube. Background technique [0002] An X-ray tube is an instrument that uses high-speed electrons emitted by the cathode to hit the surface of a metal target (anode target) to generate X-rays. There is a cathode wire in the cathode component to emit electrons. The electrons emitted by the cathode wire hit the anode target after being accelerated by a high voltage of thousands to hundreds of thousands of volts. After the high-energy electrons collide with the anode target, X-rays are emitted outward. Usually the cathode wire is surrounded by a metal grid cover with a hole at the front end, the voltage of the metal grid cover is slightly lower than the voltage of electrons emitted by the cathode wire, which makes the electrons emitted by th...

AI Technical Summary

Problems solved by technology

During brazing, because the brazing solder has poor wettability and fluidity on the surface of beryllium, and beryllium is easily oxidized, the oxide film is not easy to break during welding, so it is difficult to braze beryllium.

In addition, if the temperature is not properly controlled during brazing, the solder will easily penetrate into the window. The main component of the solder is an alloy of silver and copper, which has a low transmittance to X-rays, which will lead to a decrease in the quality of the output X-rays.

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