CN101859677A

CN101859677A - CT bulb tube with outer rotor structure

Info

Publication number: CN101859677A
Application number: CN 201010168395
Authority: CN
Inventors: 陶乃波; 宋文昌
Original assignee: ZHUHAI RCAN VACUUM ELECTRON CO Ltd
Current assignee: ZHUHAI RCAN VACUUM ELECTRON CO Ltd
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2010-10-13

Abstract

The invention discloses a CT bulb tube with an outer rotor structure, which aims to provide the CT bulb tube with an outer rotor structure with good use effect, long service life and lower use cost. The CT bulb tube of the invention comprises a bulb tube shell (1), wherein a cathode (2) and an anode target (3) are respectively arranged at two ends in the bulb tube shell (1); the CT bulb tube of the invention also comprises a rotating device, wherein the rotating device comprises a stator (4), a rotor (5) and a fixed shaft (6); the rotor (5) is connected with the anode target (3); the stator (4) is arranged outside the bulb tube shell (1) and corresponds to the rotor (5) in position; the rotor (5) is sleeved outside the fixed shaft (6); a plurality of rolling balls (7) are arranged between the rotor (5) and the fixed shaft (6); and the rotor (5) is in rotatable fit with the fixed shaft (6) through the rolling balls (7). The invention can be widely applied in the technical field of CT bulb tubes.

Description

The CT bulb of outer-rotor structure

Technical field

The present invention relates to a kind of CT bulb, relate in particular to a kind of CT bulb of outer-rotor structure.

Background technology

The CT machine is a kind of multiple functional state of an illness detection instrument, and along with the development of technology, the CT machine is widely used at medical field with high resolution and intuitive and accurate diagnosis effect and popularized.The CT bulb is also referred to as X-ray tube, is the core component in the CT machine, is used to produce X ray, and whether the technology of CT bulb is improved directly influences the work of CT machine effect.When the CT bulb uses on the CT machine, because the thermal capacity of its target disc is very big, be generally 2M-6M, even it is bigger, make the weight of himself very big (more than maximum reached at the 3kg), so, require very high to the moving bearing capacity of transfering from one department to another, in theory, the size of bearing capacity directly is directly proportional with size, the volume of bearing.As shown in Figure 1, existing X-ray bulb and the employed tube core of CT bulb all adopt the whirligig of inner rotor core, in this whirligig, the rotating shaft 02 of rotor 01 matches with fixed hub 04 by bearing 03, during its work, by described rotating shaft 02 in described fixed hub 04 inner rotation, be rotated to drive plate target, because the design problem of existing CT bulb, make that the use of this bearing 03 is limited on diameter, can't strengthen the diameter of bearing, and its bearing capacity is reduced greatly, and, need under several Baidu hot environment, work because the environment for use of CT bulb is extremely abominable, and employing solid lubrication, its lubricant effect is relatively poor, thereby the CT bulb of inner rotor core is very easily caused damage, influences the result of use and the life-span of CT bulb, particularly high-power CT bulb, exhausted most because of above-mentioned former thereby cause damage, scrap.Domestic present CT machine development trend is to multi-detector CT development, so the power of CT bulb is also increasing.And be exactly a sizable expense (can reach several hundred million U.S. dollars) replacing with of CT bulb every year only.Because technical monopoly, this product is abroad controlled fully, thereby causes the use cost of CT bulb high, and domestic a lot of hospitals are not with rising, and has hindered at home popularization of CT machine and correlation technique, universal to a great extent.

In sum, result of use is relatively poor, the life-span is short, the higher technological deficiency of use cost owing to the imperfection of structure exists for existing C T bulb.

Summary of the invention

Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and the CT bulb of the outer-rotor structure that a kind of result of use is good, the life-span long, use cost is lower is provided.

The technical solution adopted in the present invention is: the present invention includes the bulb housing, described bulb enclosure interior two ends are respectively equipped with negative electrode, plate target, the CT bulb of described outer-rotor structure also comprises whirligig, described whirligig comprises stator, rotor, fixed axis, described rotor is connected with described plate target, described stator is arranged on the outside and corresponding with the position of described rotor of described bulb housing, described rotor is enclosed within described fixed axis outside, be provided with plurality of balls between described rotor and the described fixed axis, described rotor cooperates by described ball and described fixed axis are rotatable.

Be provided with some bearings between described rotor and the described fixed axis, described rotor cooperates by described bearing and described fixed axis are rotatable, and described bearing can adopt standard component.Between described rotor and the described fixed axis two bearings can be set preferably.

The invention has the beneficial effects as follows: among the present invention, described whirligig comprises stator, rotor, fixed axis, described rotor is connected with described plate target, described stator is arranged on the outside and corresponding with the position of described rotor of described bulb housing, described rotor is enclosed within described fixed axis outside, promptly adopted the structure of external rotor, be provided with plurality of balls between described rotor and the described fixed axis, described rotor cooperates by described ball and described fixed axis are rotatable; Adopt the whirligig of above-mentioned outer-rotor structure, the running that has greatly improved whirligig is a performance, because the internal diameter of rotor is equivalent to the external diameter of bearing, makes its external diameter increase greatly, therefore its bearing capacity is promoted greatly, fundamentally changed the transhipment performance of rotor, and, in the utility model, saved rotating shaft of the prior art, make the overall weight of CT bulb descend, further improve the rotor behavior in service, and be reduced because of the use that reduces existing parts makes to make; In sum, the utility model can reduce the bearing capacity little damage that cause of original CT bulb because of bearing effectively, make the CT bulb obtain good result of use, effectively improve its useful life, greatly reduced the use cost of CT bulb, and greatly improve the manufacturing capacity and the level of China CT bulb, help the CT machine and further popularize at home.

Be provided with some bearings between described rotor and the described fixed axis, described rotor cooperates by described bearing and described fixed axis are rotatable, the external diameter of described bearing can increase with the increase of described rotor internal diameter, thereby improve the bearing capacity of bearing, and can select the standard component of bearing for use, help processing, assembling, and can effectively reach the purpose that reduces cost.

Description of drawings

Fig. 1 is the rotary device structure schematic diagram of existing CT bulb;

Fig. 2 is the structural representation of the embodiment of the invention one;

Fig. 3 is the structural representation of the embodiment of the invention two.

Embodiment

Embodiment one:

As shown in Figure 2, the present invention includes bulb housing 1, described bulb housing 1 inside is vacuum state, described bulb housing 1 adopts high temperature resistant, the dielectric strength height, the boric acid hard glass that the coefficient of expansion is little, described bulb housing 1 inner two ends are respectively equipped with negative electrode 2, plate target 3, the CT bulb of described outer-rotor structure also comprises whirligig, described whirligig comprises stator 4, rotor 5, fixed axis 6, described rotor 5 is fixedlyed connected with described plate target 3, described stator 4 is arranged on the outside and corresponding with the position of described rotor 5 of described bulb housing 1, described rotor 5 is enclosed within described fixed axis 6 outsides, be provided with plurality of balls 7 between described rotor 5 and the described fixed axis 6, described rotor 5 is by described ball 7 and described 6 rotatable cooperations of fixed axis, at this moment, the internal diameter of described rotor 5 is equivalent to the external diameter of prior art middle (center) bearing, therefore its bearing capacity is promoted greatly, fundamentally changed the transhipment performance of rotor, and saved rotating shaft of the prior art, alleviate the overall weight of CT bulb on the one hand, reduced the manufacturing cost of CT bulb on the other hand; In the described stator 4 winding is arranged, the electric current stator winding of flowing through, produce rotating magnetic field, drive described rotor 5 and rotate, and rotate by described rotor 5 drive plate targets 3, during work, the electronics of the bunchy of being sent out by described negative electrode 2 one ends is advanced with the described plate target 3 in rotation at a high speed in a vacuum, and described plate target 3 is bombarded, and power conversion takes place this moment, thereby form the X line, for medical application.

Embodiment two:

As shown in Figure 3, in the present embodiment, be provided with two bearings 8 between described rotor 5 and the described fixed axis 6, described rotor 5 is by described bearing 8 and described 6 rotatable cooperations of fixed axis, and the external diameter of described bearing 8 can increase with the increase of described rotor 5 internal diameters, improve the bearing capacity of described bearing 8, in actual applications, described bearing 8 can be selected suitable standard component, to reduce technology difficulty, and the raising assembly precision, other features of present embodiment are identical with embodiment one.

The present invention can be widely used in CT bulb technical field.

Claims

1. the CT bulb of an outer-rotor structure, comprise bulb housing (1), the inner two ends of described bulb housing (1) are respectively equipped with negative electrode (2), plate target (3), the CT bulb of described outer-rotor structure also comprises whirligig, it is characterized in that: described whirligig comprises stator (4), rotor (5), fixed axis (6), described rotor (5) is connected with described plate target (3), described stator (4) is arranged on the outside and corresponding with the position of described rotor (5) of described bulb housing (1), described rotor (5) is enclosed within described fixed axis (6) outside, be provided with plurality of balls (7) between described rotor (5) and the described fixed axis (6), described rotor (5) cooperates by described ball (7) and described fixed axis (6) are rotatable.

2. the CT bulb of outer-rotor structure according to claim 1 is characterized in that: be provided with some bearings (8) between described rotor (5) and the described fixed axis (6), described rotor (5) turns with described fixed axis (6) by described bearing (8) and cooperates.

3. the CT bulb of outer-rotor structure according to claim 2 is characterized in that: be provided with two bearings (8) between described rotor (5) and the described fixed axis (6).