CN219716800U - Focusing head structure of cathode-ray tube - Google Patents
Focusing head structure of cathode-ray tube Download PDFInfo
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- CN219716800U CN219716800U CN202321243581.2U CN202321243581U CN219716800U CN 219716800 U CN219716800 U CN 219716800U CN 202321243581 U CN202321243581 U CN 202321243581U CN 219716800 U CN219716800 U CN 219716800U
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- 238000010894 electron beam technology Methods 0.000 abstract description 7
- 230000003245 working effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000002083 X-ray spectrum Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
The utility model relates to a cathode ray tube focusing head structure, which is provided with a focusing cylinder body, wherein the inner side of the front end of the focusing cylinder body is provided with an internal thread section, a straight cylinder section is connected with the internal thread section, the tail part of the straight cylinder section is provided with a focusing channel, the diameter of the focusing channel is smaller than that of the straight cylinder section, a first expansion section is connected with the focusing channel, a second expansion section is connected with the first expansion section, the diameter of the second expansion section is larger than that of the first expansion section, and the second expansion section is arranged on the inner side of the tail end of the focusing cylinder body; a focusing horn cover is also arranged in the straight cylinder section; through holes arranged along the radial direction are formed in the straight cylinder section and the first expansion section; the utility model is an optimized design for the cathode ray tube focusing head, better realizes the focusing of the cathode ray electron beam, and has better working effect, and meanwhile, the whole focusing head has more stable structure connection, more convenient disassembly and assembly, and good practical use and popularization value.
Description
Technical Field
The utility model relates to the technical field of flaw detector component structures, in particular to a cathode ray tube focusing head structure.
Background
The method of X-ray generation is to strike a metal target with the accelerated electrons. During the impact, the electrons suddenly decelerate and their lost kinetic energy is released in the form of photons forming a continuous portion of the X-ray spectrum, known as braking radiation. By increasing the acceleration voltage, the energy carried by the electrons increases, and there is a possibility that electrons in the inner layer of the metal atom may collide. The inner layer then forms a hole, and the outer layer electrons transition back to the inner layer to fill the hole, and simultaneously emit photons with a wavelength of about 0.1 nanometers. Since the energy emitted by the outer electron transitions is quantized, the wavelength of the emitted photons is also concentrated in certain parts, forming characteristic lines in the X-spectrum, which are called characteristic radiation.
In the flaw detector equipment, X-rays are generated from an X-ray tube, and the generation of the X-rays is not separated from the cathode rays formed by an electron beam, but in the practical application of the flaw detector, under the condition that the normal operation of the electron beam is not affected, the electron beam can form higher focusing or is more beneficial to the high-speed movement of electrons so as to better form the X-rays, and the current cathode focusing head has poor connection stability due to the fact that the connection mode is mostly in a sleeved mode, and the focusing effect of the cathode focusing head is not ideal, so that the optimal design of the cathode focusing head in the X-ray tube is still necessary.
Disclosure of Invention
The utility model aims to provide a focusing head structure of a cathode ray tube, which has more outstanding use performance after being optimally designed.
The specific scheme of the utility model is as follows: the focusing head structure of the cathode ray tube comprises a focusing cylinder body, wherein an inner thread section is arranged at the inner side of the front end of the focusing cylinder body, a straight cylinder section is connected with the inner thread section, a focusing channel is arranged at the tail part of the straight cylinder section, the diameter of the focusing channel is smaller than that of the straight cylinder section, a first expansion section is connected with the focusing channel, a second expansion section is connected with the first expansion section, the diameter of the second expansion section is larger than that of the first expansion section, and the second expansion section is arranged at the inner side of the tail end of the focusing cylinder body; a focusing horn cover is further arranged in the straight barrel section, and the aperture of the focusing horn cover is gradually reduced from left to right; through holes arranged along radial direction are arranged on the straight cylinder section and the first expansion section.
Further, in the utility model, the inner diameters of the second expansion section and the first expansion section are smaller than the inner diameter of the straight barrel section, and the inner diameter of the straight barrel section is smaller than the diameter of the internal thread section.
Further, in the utility model, the through holes formed in the straight cylinder section and the first expansion section are opposite through holes, and the axes of the through holes formed in the straight cylinder section and the first expansion section are mutually parallel.
Further, the inner diameter of the small-caliber end of the focusing horn cover is consistent with the inner diameter of the focusing channel.
The utility model is an optimized design for the cathode ray tube focusing head, better realizes the focusing of the cathode ray electron beam, and has better working effect, and meanwhile, the whole focusing head has more stable structure connection, more convenient disassembly and assembly, and good practical use and popularization value.
Drawings
FIG. 1 is a schematic general construction of the present utility model;
FIG. 2 is a schematic view of the main sectional direction structure of the present utility model;
fig. 3 is a right-view structural diagram of the present utility model.
In the figure: 1-through hole, 2-focusing cylinder, 3-internal thread section, 4-straight section, 5-focusing horn cover, 6-focusing channel, 7-first expansion section, 8-second expansion section.
Detailed Description
The following description of the embodiments of the present utility model will be made more apparent in the drawings of the present utility model, wherein it is to be understood that the embodiments described are merely some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model. In the description of the present utility model, it should be noted that, the terms "upper", "lower", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings, or an orientation or a positional relationship in which the inventive product is conventionally put in use, merely for convenience of describing the present utility model or simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured or operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 3, the utility model is a cathode ray tube focusing head structure, which is provided with a focusing cylinder 2, wherein the inner side of the front end of the focusing cylinder is provided with an internal thread section 3, a straight cylinder section 4 is connected with the internal thread section, the tail part of the straight cylinder section is provided with a focusing channel 6, the diameter of the focusing channel is smaller than that of the straight cylinder section, a first expansion section 7 is connected with the focusing channel, a second expansion section 8 is connected with the first expansion section, the diameter of the second expansion section is larger than that of the first expansion section, and the second expansion section is arranged on the inner side of the tail end of the focusing cylinder; a focusing horn cover 5 is further arranged in the straight barrel section, and the aperture of the focusing horn cover is gradually reduced from left to right; the straight cylinder section and the first expansion section are provided with through holes 1 which are arranged along the radial direction; further, in the utility model, the inner diameters of the second expansion section and the first expansion section are smaller than the inner diameter of the straight barrel section, and the inner diameter of the straight barrel section is smaller than the diameter of the internal thread section; further, in the utility model, the through holes formed in the straight cylinder section and the first expansion section are opposite through holes, and the axes of the through holes formed in the straight cylinder section and the first expansion section are mutually parallel.
Further, the inner diameter of the small-caliber end of the focusing horn cover is consistent with the inner diameter of the focusing channel.
The utility model is used as a part in an X-ray generating tube, the main function of the utility model is to focus a cathode ray electron beam so as to obtain better focusing effect and better impact energy, the traditional focusing head is generally connected with the inside of a long ceramic tube body in a sleeved mode, the stability is poor after the use, the focusing head is connected by adopting an internal thread section, flexible disassembly and replacement can be realized, and meanwhile, the threaded connection mode is more stable and reliable; furthermore, the utility model designs a focusing horn cover structure in the straight section, and the focusing horn cover structure can be directly and movably inserted into the straight section or fixedly arranged with the inner wall of the straight section, and the structure is designed to better realize the focusing effect on the cathode ray and is more beneficial to the generation of the subsequent X-rays.
The utility model achieves better use effect although only making partial improvement on the existing focusing head. The utility model is an optimized design for the cathode ray tube focusing head, better realizes the focusing of the cathode ray electron beam, and has better working effect, and meanwhile, the whole focusing head has more stable structure connection, more convenient disassembly and assembly, and good practical use and popularization value.
Claims (4)
1. A cathode ray tube focusing head structure, characterized in that: the device comprises a focusing barrel, wherein an internal thread section is arranged on the inner side of the front end of the focusing barrel, a straight barrel section is connected with the internal thread section, a focusing channel is arranged at the tail part of the straight barrel section, the diameter of the focusing channel is smaller than that of the straight barrel section, a first expansion section is connected with the focusing channel, a second expansion section is connected with the first expansion section, the diameter of the second expansion section is larger than that of the first expansion section, and the second expansion section is arranged on the inner side of the tail end of the focusing barrel; a focusing horn cover is further arranged in the straight barrel section, and the aperture of the focusing horn cover is gradually reduced from left to right; through holes arranged along radial direction are arranged on the straight cylinder section and the first expansion section.
2. A cathode-ray tube focusing head structure according to claim 1, wherein: the inner diameters of the second expansion section and the first expansion section are smaller than the inner diameter of the straight barrel section, and the inner diameter of the straight barrel section is smaller than the diameter of the internal thread section.
3. A cathode-ray tube focusing head structure according to claim 1, wherein: the through holes formed in the straight barrel section and the first expansion section are opposite through holes, and the axes of the through holes formed in the straight barrel section and the first expansion section are parallel to each other.
4. A cathode-ray tube focusing head structure according to claim 1, wherein: the inner diameter of the small-caliber end of the focusing horn cover is consistent with the inner diameter of the focusing channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321243581.2U CN219716800U (en) | 2023-05-22 | 2023-05-22 | Focusing head structure of cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321243581.2U CN219716800U (en) | 2023-05-22 | 2023-05-22 | Focusing head structure of cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219716800U true CN219716800U (en) | 2023-09-19 |
Family
ID=87977621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321243581.2U Active CN219716800U (en) | 2023-05-22 | 2023-05-22 | Focusing head structure of cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219716800U (en) |
-
2023
- 2023-05-22 CN CN202321243581.2U patent/CN219716800U/en active Active
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