CN203733756U

CN203733756U - X-ray generator

Info

Publication number: CN203733756U
Application number: CN201420066451.0U
Authority: CN
Inventors: 冷锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-02-13
Filing date: 2014-02-13
Publication date: 2014-07-23
Anticipated expiration: 2024-02-13

Abstract

The utility model relates to the medical instrument field and particularly relates to an X-ray generator. The X-ray generator mainly comprises a controller, a high voltage generator, an X-ray tube assembly and a high voltage cable, wherein the X-ray tube assembly comprises an X-ray sleeve, insulation oil and an X-ray tube, the X-ray tube comprises a glass cover casing, a cathode, an anode, a filament focusing cover, a target disc, an iron core and stator coil, a bearing, a rotor, a water cooling tank, a heat exchanger, a water pump and a water tank, a combination portion of the anode and the water cooling tank is provided with a sealing ring, and the high voltage cable sequentially comprises a protection layer, a metal mesh layer, an outer semiconductor layer, a high voltage insulation layer, an inner semiconductor layer, a first core wire layer, a second core wire layer and a third core wire layer from outside to inside. According to the X-ray generator, the anode has a large heat radiation area, the arranged water circulation loop can rapidly take heat of the anode away, so power of the X-ray tube is greatly improved, performance of the high voltage cable is reliable and stable, the sealing ring prepared by wear-resistant ceramic can maintain sealing between the anode and the water cooling tank during rotation of the anode, and service life is prolonged.

Description

A kind of x-ray generator

Technical field

The utility model relates to medical instruments field, especially a kind of x-ray generator.

Background technology

The straightforward procedure that produces X ray is with the electronic impact metallic target after accelerating.In knockout process, electronics slows down suddenly, and the kinetic energy of its loss can be emitted with photon form, forms the continuous part of X-ray spectrum, is referred to as bremsstrahlung radiation.By strengthening accelerating voltage, the energy that electronics carries increases, likely by knocking-on the inner electron of metallic atom.So internal layer forms hole, outer-shell electron transition is returned internal layer and is filled up hole, and emit wavelength is at the photon of 0.1 nanometer left and right simultaneously.The energy of emitting due to outer-shell electron transition is quantized, so the wavelength of the photon of emitting also concentrates on some part, has formed the characteristic curve in X-ray spectrum, and this is called characteristic radiation.

In order to shorten the radiographic time for exposure, obtain image clearly, X-ray tube should produce the X ray that density is higher within the extremely short time.For this reason, must improve the power of X-ray tube.But the power conversion of supplying with pipe becomes the power of X ray very low, more than 99% power conversion becomes heat energy and is dissipated on anode, and temperature of anode is raise rapidly.In fixed anode X-ray tube, because heat concentrates in a focus, very easily local overheating and melting of anode.

Utility model content

The utility model is intended to address the above problem, a kind of x-ray generator is provided, its anode heat dissipation area is large, the water-flow circuit simultaneously arranging can be taken away heat on anode and can greatly improve the power of X-ray tube fast, high-tension cable dependable performance, stable, the sealing ring that wear-resistant ceramic is made can make anode also keep when rotated sealing and the long service life between water cooling box, and its technical scheme adopting is as follows:

A kind of x-ray generator, it is mainly by controller, high pressure generator, X-ray tube assembly and high-tension cable composition, described high pressure generator is connected with X-ray tube assembly by high-tension cable, it is characterized in that, and described X-ray tube assembly comprises: X-ray tube cover, insulating oil and X-ray tube, described X-ray tube comprises: cloche shell, negative electrode, anode, filament focus mask, target disc, iron core and stator coil, bearing, rotor, water cooling box, heat exchanger, water pump and water tank, described negative electrode and anode are all arranged in cloche shell, described filament focus mask is fixed on negative electrode, described target disc is fixed on anode, described anode is connected with rotor by rotating shaft, described iron core and stator coil and cloche shell Joint, described rotor is rotationally connected by bearing and cloche shell, in described filament focus mask, be provided with filament, the focus of described filament focus mask drops on target disc and the edge of close target disc, described water cooling box be fixed in cloche shell and the water inlet of water cooling box and delivery port through cloche shell, the right-hand part of described anode is arranged in water cooling box, described water cooling box is by water pipe and heat exchanger, water pump and water tank composition circulation circuit, described anode is provided with sealing ring with the water cooling box place of combining, and described high-tension cable is certainly outside to inside successively by protective layer, metal net layer, outer semiconductor layer, High-Voltage Insulation is pressed, inner semiconductor layer, the first core-wire layer, the second core-wire layer and the 3rd core-wire layer composition, described the first core-wire layer, the second core-wire layer and the 3rd core-wire layer are mutually concentric, described the first core-wire layer, the second core-wire layer and the 3rd core-wire layer are by cable insulating layer and cable composition.

On technique scheme basis, described sealing ring is made up of wear-resistant ceramic.

On technique scheme basis, described target disc is tungsten target.

On technique scheme basis, in described cloche shell, be vacuum environment.

The utlity model has following advantage: anode heat dissipation area is large, the heat that electronic impact metallic target produces is distributed on an annular area, significantly reduce temperature of anode, not easy damaged anode, at identical temperature, can greatly improve the power of X-ray tube, simultaneously, the water-flow circuit arranging can be taken away heat on anode and further improve the power of X-ray tube fast, high-tension cable is reliable to X-ray tube feed tube voltage and filament heating voltage performance, stable, the sealing ring that wear-resistant ceramic is made can make anode also keep when rotated the sealing between water cooling box, because therefore wear-resistant ceramic resistance to wears high temperature resistant long service life.

Brief description of the drawings

Fig. 1: the structural representation of X-ray tube described in the utility model;

Fig. 2: the cross-sectional view of high-tension cable described in the utility model;

Embodiment

Below in conjunction with accompanying drawing and example, the utility model is described in further detail:

As depicted in figs. 1 and 2, a kind of x-ray generator of the present embodiment, it is mainly by controller, high pressure generator, X-ray tube assembly and high-tension cable composition, described high pressure generator is connected with X-ray tube assembly by high-tension cable, and described X-ray tube assembly comprises: X-ray tube cover, insulating oil and X-ray tube, described X-ray tube comprises: cloche shell 1, negative electrode 2, anode 3, filament focus mask 4, target disc 5, iron core and stator coil 6, bearing 7, rotor 8, water cooling box 30, heat exchanger 31, water pump 32 and water tank 35, described negative electrode 2 and anode 3 are all arranged in cloche shell 1, described filament focus mask 4 is fixed on negative electrode 2, described target disc 5 is fixed on anode 3, described anode 3 is connected with rotor 8 by rotating shaft, described iron core and stator coil 6 and cloche shell 1 Joint, described rotor 8 is rotationally connected by bearing 7 and cloche shell 1, in described filament focus mask 4, be provided with filament, the focus of described filament focus mask 4 drops on target disc 5 and the edge of close target disc 5, described water cooling box 30 be fixed in cloche shell 1 and the water inlet of water cooling box 30 and delivery port through cloche shell 1, the right-hand part of described anode 3 is arranged in water cooling box 30, and described water cooling box 30 is by water pipe 33 and heat exchanger 31, water pump 32 and water tank 35 form circulation circuit, and described anode 3 is provided with sealing ring 34 with water cooling box 30 places of combining, and described high-tension cable is certainly outside to inside successively by protective layer 10, metal net layer 11, outer semiconductor layer 12, High-Voltage Insulation presses 13, inner semiconductor layer 14, the first core-wire layer 20, the second core-wire layer 21 and the 3rd core-wire layer 22 form, described the first core-wire layer 20, the second core-wire layer 21 and the 3rd core-wire layer 22 are mutually concentric, described the first core-wire layer 20, the second core-wire layer 21 and the 3rd core-wire layer 22 form by cable insulating layer 201 and cable 202.

Preferably, described sealing ring 34 is made up of wear-resistant ceramic, the feature such as it has, and hardness is large, anti-wear performance is fabulous, lightweight and heat resistance is good.

Preferably, described target disc 5 is tungsten target.

Preferably, in described cloche shell 1, be vacuum environment.

The utility model is not limited to above-mentioned specific embodiment, and all any changes of doing based on the utility model or modification all belong to the claimed scope of the utility model.

Claims

1. an x-ray generator, it is mainly by controller, high pressure generator, X-ray tube assembly and high-tension cable composition, described high pressure generator is connected with X-ray tube assembly by high-tension cable, it is characterized in that, and described X-ray tube assembly comprises: X-ray tube cover, insulating oil and X-ray tube, described X-ray tube comprises: cloche shell (1), negative electrode (2), anode (3), filament focus mask (4), target disc (5), iron core and stator coil (6), bearing (7), rotor (8), water cooling box (30), heat exchanger (31), water pump (32) and water tank (35), described negative electrode (2) and anode (3) are all arranged in cloche shell (1), described filament focus mask (4) is fixed on negative electrode (2), described target disc (5) is fixed on anode (3), described anode (3) is connected with rotor (8) by rotating shaft, described iron core and stator coil (6) and cloche shell (1) Joint, described rotor (8) is rotationally connected by bearing (7) and cloche shell (1), in described filament focus mask (4), be provided with filament, the focus of described filament focus mask (4) drops on the edge of the upper and close target disc (5) of target disc (5), described water cooling box (30) be fixed in cloche shell (1) and the water inlet of water cooling box (30) and delivery port through cloche shell (1), the right-hand part of described anode (3) is arranged in water cooling box (30), described water cooling box (30) is by water pipe (33) and heat exchanger (31), water pump (32) and water tank (35) composition circulation circuit, described anode (3) is provided with sealing ring (34) with water cooling box (30) place of combining, and described high-tension cable is certainly outside to inside successively by protective layer (10), metal net layer (11), outer semiconductor layer (12), (13) are pressed in High-Voltage Insulation, inner semiconductor layer (14), the first core-wire layer (20), the second core-wire layer (21) and the 3rd core-wire layer (22) composition, described the first core-wire layer (20), the second core-wire layer (21) and the 3rd core-wire layer (22) are mutually concentric, described the first core-wire layer (20), the second core-wire layer (21) and the 3rd core-wire layer (22) are by cable insulating layer (201) and cable (202) composition.

2. a kind of x-ray generator according to claim 1, is characterized in that: described sealing ring (34) is made up of wear-resistant ceramic.

3. a kind of x-ray generator according to claim 1 and 2, is characterized in that: described target disc (5) is tungsten target.

4. a kind of x-ray generator according to claim 3, is characterized in that: in described cloche shell (1), be vacuum environment.