CN209747446U - X-ray tube with lead protection device - Google Patents
X-ray tube with lead protection device Download PDFInfo
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- CN209747446U CN209747446U CN201920418927.5U CN201920418927U CN209747446U CN 209747446 U CN209747446 U CN 209747446U CN 201920418927 U CN201920418927 U CN 201920418927U CN 209747446 U CN209747446 U CN 209747446U
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- ray tube
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Abstract
The utility model discloses an X-ray tube with a lead protection device, which comprises an X-ray tube main body, a lead window, an insulating layer, a lead cylinder, an end cover and a supporting device; the X-ray tube main body comprises a sealed shell, an anode assembly and a cathode assembly, wherein the tail end of the anode assembly is provided with a radiator; the X-ray tube main body is sleeved with a lead cylinder, the radiator is positioned outside the sealing shell and inside the lead cylinder, the insulating layer is arranged on the inner wall of the lead cylinder in a tight fit mode, and a gap is reserved between the insulating layer and the X-ray tube main body; a lead window is arranged on the lead cylinder; the end covers are arranged at two ends of the lead cylinder, the radiator and the end cover at the same side of the lead cylinder are fixed through a connecting device, and a supporting device is arranged between the sealing shell close to one side of the cathode component and the insulating layer. The lead cylinder is sleeved on the outer wall of the X-ray tube main body, so that the lead protection of the shell of the machine head can be greatly reduced, and the lead consumption is reduced; a radiator is arranged in the lead cylinder to avoid the expansion and deformation of the anode; the diameters of the two ends of the sealing shell are smaller than that of the middle diameter structure, so that the insulativity is enhanced.
Description
Technical Field
The utility model relates to a core component X-ray tube technical field in X-ray machine of safety inspection, medical treatment, flaw detection specifically is a from X-ray tube of taking plumbous protector.
Background
The X-ray tube is a core component of the X-ray machine, and the X-ray tube emits X-rays to perform detection and observation of an object to be measured. The X-ray tube comprises an anode and a cathode, which are respectively a target for receiving electron bombardment and a filament for emitting electrons, and the two electrodes are sealed in a high-vacuum glass or ceramic shell.
The power supply part of the X-ray tube at least comprises a low-voltage power supply for heating the filament and a high-voltage generator for applying high voltage to the two poles, when the tungsten filament passes through enough current to generate electron cloud, and enough voltage (kilovolt grade) is applied between the anode and the cathode, so that the electron cloud is pulled to the anode, at this time, the electrons impact the tungsten target in a high-energy and high-speed state, the high-speed electrons reach the target surface, the movement is suddenly stopped, a small part of the kinetic energy is converted into radiation energy, and the radiation generated in the form is emitted in the form of X-rays, namely bremsstrahlung radiation.
Changing the magnitude of the filament current changes the temperature of the filament and the amount of electron emission, thereby changing the magnitude of the tube current and the X-ray intensity. Changing the X-ray tube excitation potential or selecting different targets can change the energy of the incident X-rays or the intensity at different energies.
when the existing X-ray tube works, if the insulation performance is not good enough, the phenomenon of discharge and ignition can be generated, and the X-ray tube can be seriously punctured. Although a relatively large power is supplied to the anode of the X-ray tube, since the efficiency of the X-ray tube is low, only less than 1% of the X-rays become X-rays, and 99% or more of the electron beam power becomes anode heat loss, and the anode metal material undergoes expansion deformation when the temperature rises, and the position of the electron hitting the target is constantly shifted. In addition, the existing X-ray tube has no X-ray protection function, the ray leakage exceeds the standard and cannot reach the safety standard, so that a corresponding lead protection device needs to be specially made for the X-ray tube.
SUMMERY OF THE UTILITY MODEL
an object of the utility model is to provide a from X-ray tube who takes plumbous protector to the problem that prior art exists.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
An X-ray tube with a lead protection device comprises an X-ray tube main body, a lead window, an insulating layer, a lead cylinder, an end cover and a supporting device;
The X-ray tube main body comprises a sealed shell, an anode assembly and a cathode assembly, wherein the anode assembly and the cathode assembly are arranged in the sealed shell and are opposite in position, and a radiator is arranged at the tail end of the anode assembly;
The lead cylinder is sleeved outside the X-ray tube main body, the radiator is positioned outside the sealing shell and inside the lead cylinder, the insulating layer is arranged on the inner wall of the lead cylinder in a tight fit mode, and a gap is reserved between the insulating layer and the X-ray tube main body;
the lead cylinder is provided with a convex lead window, the insulating layer is provided with an insulating layer window, and the lead window corresponds to the insulating layer window in position;
The two ends of the lead cylinder are respectively provided with the end covers, the radiator and the end cover on the same side of the radiator are fixed through a connecting device, and the supporting device is arranged between the sealing shell on one side close to the cathode component and the insulating layer, so that the X-ray tube main body and the lead cylinder are coaxially arranged;
The anode assembly comprises a tungsten target positioned at the center of the X-ray tube body and an anode head covered on the tungsten target, and the cathode assembly comprises a cathode head and a filament arranged on the cathode head.
the technical scheme is further set, the supporting device comprises at least three supporting columns which are uniformly distributed along the circumference, and the supporting columns are made of elastic insulating materials.
The basic technical scheme is further set, the insulating layer adopts a laminated paper tube phenolic paper tube, the substrate of the phenolic paper tube adopts winding paper, and the adhesive adopts phenol formaldehyde resin.
The basic technical scheme is further set, and the diameters of the two ends of the sealing shell are smaller than the diameter of the middle of the sealing shell.
the basic technical scheme is further set, and the thickness of the wall of the lead cylinder is 2-2.5 mm.
the basic technical scheme is further set, and the sealing shell is a glass shell or a metal ceramic shell.
the utility model discloses an advantage and positive effect:
The protective lead cylinder with the insulating material is sleeved on the outer wall of the X-ray tube main body, so that the lead protection of the shell of the machine head can be greatly reduced, and the using amount of lead is reduced;
The gap is reserved between the insulating layer and the X-ray tube main body, so that the heat dissipation of the X-ray tube main body is facilitated; the heat radiator is arranged in the lead cylinder to reduce the heat consumption of the anode and avoid the expansion deformation of the anode metal material when the temperature rises;
the sealed shell is designed to be of a structure with diameters at two ends smaller than the diameter of the middle part, so that the distance from the top end of a high voltage to the sealed shell is increased, the insulation distance is increased, and the insulation property is also enhanced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
The notations in fig. 1 have the following meanings: the device comprises an X-ray tube body 1, a lead window 2, an insulating layer 3, a lead cylinder 4, an end cover 5, a supporting device 6, a sealed shell 7, an anode assembly 8, a cathode assembly 9, a radiator 10, an insulating layer window 11 and a tungsten target 12.
Detailed Description
in the description of the present invention, it is to be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are all the directions or positional relationships shown on the drawings, and the objects are only for convenience of description of the present invention and simplification of description, and do not indicate or imply that the parts indicated must have a specific direction, be constructed and operated in a specific direction, and thus, are not to be construed as limiting the present invention.
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
An X-ray tube with a lead protection device comprises an X-ray tube body 1, a lead window 2, an insulating layer 3, a lead cylinder 4, an end cover 5 and a supporting device 6, wherein the X-ray tube is shown in figure 1;
The X-ray tube body 1 comprises a sealed shell 7, an anode assembly 8 and a cathode assembly 9, wherein the anode assembly 8 and the cathode assembly 9 are arranged in the sealed shell 7 and are opposite to each other in position, and a heat radiator 10 is arranged at the tail end of the anode assembly 8;
the lead cylinder 4 is sleeved outside the X-ray tube main body 1, the radiator 10 is positioned outside the sealing shell 7 and inside the lead cylinder 4, the insulating layer 3 is arranged on the inner wall of the lead cylinder 4 in a tight fit manner,
a gap is reserved between the insulating layer 3 and the X-ray tube main body 1 to prevent the discharge from puncturing the tube, and the transformer oil can form self circulation to be beneficial to the heat dissipation of the X-ray tube main body 1;
the lead cylinder 4 is provided with a convex lead window 2, the insulating layer 3 is provided with an insulating layer window 11, and the lead window 2 corresponds to the insulating layer window 11 in position;
the two ends of the lead cylinder 4 are respectively provided with the end covers 5, the radiator 10 and the end cover 5 on the same side of the radiator are fixed through a connecting device, the supporting device 6 is arranged between the sealing shell 7 on one side close to the cathode component 9 and the insulating layer 3, the supporting device 6 comprises at least three supporting columns which are uniformly distributed along the circumference, and the supporting columns are made of elastic insulating materials, so that the X-ray tube main body 1 and the lead cylinder 4 are coaxially arranged, the problems of breakdown and firmness are solved, the supporting columns and the sealing shell 7 are adhered by 504 glue, and the assembly is completed after the drying;
The anode assembly 8 comprises a tungsten target 12 positioned at the center of the X-ray tube body 1 and an anode head covered on the tungsten target 12, and the cathode assembly 9 comprises a cathode head and a filament arranged on the cathode head.
The lead cylinder 4 is tightly matched with the insulating layer 3, the insulating layer 3 has hardness capable of supporting a lead layer not to deform, when the X-ray tube works, about 1% of energy is converted into X-rays, 99% of energy needs to be conducted outside the tube, and then circulating oil takes away heat, so that the insulating layer 3 is required to be oil-resistant, heat-resistant and good in heat dissipation; therefore, the insulating layer 3 adopts a laminated paper tube phenolic paper tube 3520, because the laminated paper tube phenolic paper tube has better pressure resistance, thermal stability and the like, the substrate of the phenolic paper tube adopts winding paper, and the adhesive adopts phenol formaldehyde resin; in order to ensure the positions of the windows of the lead cylinder 4 and the 3520 paper cylinder, a special die for assembly and manufacture is designed, interference fit is adopted for the fit, and then epoxy glue is poured to manufacture a lead sleeve;
the wall thickness of the lead cylinder 4 is 2-2.5 mm, and the sealing shell 2 is a glass shell or a metal ceramic shell.
The utility model discloses during the use, apply positive negative high-voltage at X-ray tube both ends, wherein, at the voltage low at X-ray tube both ends, and the voltage in the centre is highest, and the tungsten target is just in the highest voltage position, and sealed shell 7 designs to be that two diameters are less than the diameter structure in the centre, has just so increased the distance of top department distance sealed shell 7 of high voltage, makes the increase of insulation distance, and insulating nature also strengthens.
the utility model can be applied to medical X-ray equipment, and provides convenience for modern medical treatment and daily examination.
the above-mentioned embodiment is only the preferred embodiment of the present invention, all the basis the utility model discloses a technical entity all belongs to the utility model discloses any simple modification, modification and substitution change to what the above embodiment was done the within range of technical scheme.
Claims (4)
1. An X-ray tube with a lead protection device, characterized in that: the X-ray tube comprises an X-ray tube body (1), a lead window (2), an insulating layer (3), a lead cylinder (4), an end cover (5) and a supporting device (6);
the X-ray tube main body (1) comprises a sealed shell (7), an anode assembly (8) and a cathode assembly (9), wherein the anode assembly (8) and the cathode assembly (9) are arranged in the sealed shell (7) and are opposite in position, and a radiator (10) is arranged at the tail end of the anode assembly (8);
The lead cylinder (4) is sleeved outside the X-ray tube main body (1), the radiator (10) is positioned outside the sealing shell (7) and inside the lead cylinder (4), the insulating layer (3) is arranged on the inner wall of the lead cylinder (4) in a tight fit mode, and a gap is reserved between the insulating layer (3) and the X-ray tube main body (1);
A convex lead window (2) is arranged on the lead cylinder (4), an insulating layer window (11) is arranged on the insulating layer (3), and the lead window (2) corresponds to the insulating layer window (11);
the end covers (5) are respectively arranged at two ends of the lead cylinder (4), the radiator (10) and the end cover (5) on the same side of the radiator are fixed through a connecting device, and the supporting device (6) is arranged between the sealing shell (7) on one side close to the cathode component (9) and the insulating layer (3) to enable the X-ray tube main body (1) and the lead cylinder (4) to be coaxially arranged;
the anode assembly (8) comprises a tungsten target (12) positioned in the center of the X-ray tube body (1) and an anode head covered on the tungsten target (12), and the cathode assembly (9) comprises a cathode head and a filament arranged on the cathode head;
the supporting device (6) comprises at least three supporting columns which are uniformly distributed along the circumference, and the supporting columns are made of elastic insulating materials;
The diameters of two ends of the sealing shell (7) are smaller than the diameter of the middle.
2. An X-ray tube with lead shielding as defined in claim 1, wherein: the insulating layer (3) adopts a laminated paper tube phenolic paper tube, the substrate of the phenolic paper tube adopts winding paper, and the adhesive adopts phenol formaldehyde resin.
3. an X-ray tube with lead shielding as defined in claim 1, wherein: the thickness of the wall of the lead cylinder (4) is 2-2.5 mm.
4. An X-ray tube with lead shielding as defined in claim 1, wherein: the sealing shell (7) is a glass shell or a metal ceramic shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920418927.5U CN209747446U (en) | 2019-03-29 | 2019-03-29 | X-ray tube with lead protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920418927.5U CN209747446U (en) | 2019-03-29 | 2019-03-29 | X-ray tube with lead protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209747446U true CN209747446U (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920418927.5U Active CN209747446U (en) | 2019-03-29 | 2019-03-29 | X-ray tube with lead protection device |
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| CN (1) | CN209747446U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111968900A (en) * | 2020-08-25 | 2020-11-20 | 伟杰科技（苏州）有限公司 | X-ray tube with ionizing radiation protection |
| CN113347771A (en) * | 2020-03-02 | 2021-09-03 | 苏州博思得电气有限公司 | Tube core structure and X-ray high-voltage generator with same |
-
2019
- 2019-03-29 CN CN201920418927.5U patent/CN209747446U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113347771A (en) * | 2020-03-02 | 2021-09-03 | 苏州博思得电气有限公司 | Tube core structure and X-ray high-voltage generator with same |
| CN111968900A (en) * | 2020-08-25 | 2020-11-20 | 伟杰科技（苏州）有限公司 | X-ray tube with ionizing radiation protection |
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