Single-target-surface multi-focus-point X-ray bulb tube

Abstract

The invention relates to a single-target-surface multi-focus-point X-ray bulb tube. The single-target-surface multi-focus-point X-ray bulb tube comprises a bulb tube housing consisting of a bulb tube head and a straight bulb tube, wherein a plurality of berylium windows uniformly arranged in a round shape by taking the center of a closed end surface as a center are arranged on the closed end surface of the bulb tube head; a positive electrode consisting of a positive electrode bulb tube and a positive electrode straight tube is arranged in the bulb tube housing; the positive electrode bulb tube is positioned in the bulb tube head, and the positive electrode straight tube is positioned in the straight bulb tube; and a bearing, a positive electrode seat, a rotor and a copper bush are arranged between the positive electrode straight tube and the straight bulb tube in sequence, the outer wall of the positive electrode straight tube is closely connected with an inner ring of the bearing, an outer ring of the bearing is closely connected with the inner wall of the positive electrode seat, the rotor is embedded into the inner wall of the copper bush, and one end, close to the positive electrode bulb tube, of the copper bush is connected with the positive electrode straight tube through an outer iron cover. The single-target-surface multi-focus-point X-ray bulb tube further comprises two negative electrodes arranged in different positions. According to the single-target-surface multi-focus-point X-ray bulb tube, multiple pairs of X-rays in different positions can be exposed within a short time. The single-target-surface multi-focus-point X-ray bulb tube is comprehensive and accurate in imaging, simple in structure and wide in application range.

Description

technical field [0001] The invention relates to the field of X-ray tubes, in particular to an X-ray tube with a single target surface and multiple focus points. Background technique [0002] X-ray tubes are widely used in X-ray imaging technology. There are two types of common X-ray tubes on the market, one is a fixed anode tube, and the other is a rotating anode tube with increased heat capacity. The principle is that a DC high voltage is added between the anode and the filament, and the electrons emitted by the heated filament bombard the anode target surface at high speed under this high voltage to generate X-rays. The fixed anode tube includes a vacuum glass tube, a filament and an anode. The filament and the anode are respectively fixed at both ends of the vacuum glass tube. The anode of the rotating anode tube with increased heat capacity is fixed at one end of the vacuum glass tube through the rotor. On the bearing seat of the vacuum glass tube, it can be driven to r...

AI Technical Summary

Problems solved by technology

However, the dual-window X-ray tube has the following three disadvantages. The first disadvantage is that when the equipment containing the tube rotates and the detection object does not rotate accordingly (for example, the vascular machine approaches from the side to the top), a pair of focus The generated image will change from horizontal parallax to vertical parallax, and the 3D display effect does not conform to the observation habit. In order to solve this problem, a rotating mechanism must be added to ensure that the ball tube produces parallax images of the measured object in the habitual direction at any time , which not only increases the cost and equipment complexity, but also reduces the efficiency of equipment application; the second disadvantage is that the design of the double target surface increases the distance from the center of gravity of the target surface to the bearing support point, which increases the burden on the bearing and also increases the This increases the difficulty of dynamic balance of the target surface, which will inevitably limit the weight of the target surface, and accordingly, limit the maximum heat capacity that the tube can achieve; the third disadvantage is that only a pair of parallax images can be collected at one position of the tube , will inevitably produce dead angles for 3D display and measurement

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