CN207731893U - A kind of hollow structure X-ray tube - Google Patents
A kind of hollow structure X-ray tube Download PDFInfo
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- CN207731893U CN207731893U CN201820202082.1U CN201820202082U CN207731893U CN 207731893 U CN207731893 U CN 207731893U CN 201820202082 U CN201820202082 U CN 201820202082U CN 207731893 U CN207731893 U CN 207731893U
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- target assembly
- anode
- anode target
- ray tube
- hollow structure
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Abstract
The utility model discloses a kind of hollow structure X-ray tubes, including glass bulb (2), adapter (4), anode assemblies and cathode assembly (1), the anode assemblies include anode cap (5) and anode target assembly (3), and the anode target assembly (3) is welded with the anode cap (5)；It is big diameter and deep pore structure (32) inside the anode target assembly (3)；The adapter (4) stretches to the internal bosom of the big diameter and deep pore structure (32) and is fixed with anode target assembly (3).The utility model can effectively reduce focal spot drift value.
Description
Technical field
The utility model is related to X-ray tube technical fields, and in particular to a kind of hollow structure X-ray tube.
Background technology
In X-ray tube, X-ray tube cathode generates electronics high velocity bombardment anode target surface under high voltage electric field effect, generates X and penetrates
Line is focal spot by high-velocity electron beam impingement region, is bombarded 98% of electron energy or more and is converted into thermal energy in anode.It is held
Continuous thermal energy effect, anode surface focal spot can move in an axial direction, to generate focal spot drift.Focal spot is relative to axial centre position
It sets and changes, be X-ray tube inherent characteristic, easily cause the acute variation that detector receives signal amplitude, complete machine image is carried on the back
Scape influences very big.
The anode target assembly of Conventional X-ray tubes generally selects the anaerobic steel structure of solid core.As shown in Figure 1, using solid knot
The anode target assembly 101 of structure, because anode target 103 it is heated after transfer heat to anode target assembly 101 cause anode assemblies 101 by
It thermally expands, so that position movement occurs for the physical location of focal spot.Matched using common joint 102 and anode target assembly 101
It closes, there are gaps between 101 threaded hole of common transfer head 102 and anode target assembly, have blocked the transmission of heat, have exacerbated anode target
Expansion so that focal spot drift value becomes larger.
Utility model content
In view of the deficiencies of the prior art, the utility model is intended to provide a kind of hollow structure X-ray tube, can effectively reduce
Focal spot drift value.
To achieve the goals above, the utility model adopts the following technical solution：
A kind of hollow structure X-ray tube, including glass bulb, adapter, anode assemblies and cathode assembly, the anode assemblies packet
Anode cap and anode target assembly are included, the anode target assembly is welded with the anode cap；The anode target component internal is equipped with big
Aperture deep-hole structures；Bosom that the adapter stretches in the big diameter and deep pore structure is simultaneously fixed with anode target assembly.
Further, the big diameter and deep pore structure and anode target assembly are concentric.
Further, the aperture of the big diameter and deep pore structure is less than the outer diameter of anode target assembly, and hole depth is less than anode target
Distance of the target center of component to the end of anode target assembly.
Further, the outer diameter of anode target assembly is 20mm~50mm, and the aperture of big diameter and deep pore structure is ranging from
10mm~20mm, range 60mm~150mm of the distance of the target center of anode target assembly to the end of anode target assembly, big diameter and deep
Ranging from 50mm~100mm of the hole depth of pore structure.
Further, the adapter is solid by the innermost threaded hole of big diameter and deep pore structure and the anode target assembly
It is fixed.
Further, the both ends of the adapter are respectively equipped with external screw thread connecting pin and internal thread connecting hole；The spiral shell
The external screw thread match specifications of the internal thread specification of pit and the external screw thread connecting pin, external screw thread connecting pin are screwed on spiral shell
In pit, internal thread connecting hole for realizing hollow structure X-ray tube and outer rays source fixation and cooperation.
Still further, the external screw thread specification limit of external screw thread connecting pin is M5~M12, the internal thread of internal thread connecting hole
Specification limit is M6~M20.
Further, the anode target and anode target assembly are fixed by being brazed.
The beneficial effects of the utility model are：
1, the anode of hollow structure X-ray tube uses large-diameter deep hole structure design, can minimize expander
Length dimension, to achieve the purpose that effectively reduce ray tube anode swell increment and improve the hot drift of focal spot.
2, big diameter and deep pore structure and anode target assembly are concentric, can effectively avoid focal spot discrete, reduce assembly difficulty.
3, the aperture of big diameter and deep pore structure is less than the outer diameter of anode target assembly, and the hole depth of big diameter and deep pore structure is less than target
The heart can effectively reduce gas leakage hidden danger to the distance of anode target element end, ensure the reliability of ray tube work.
Description of the drawings
Fig. 1 is the anode assemblies structural schematic diagram of existing X-ray tube；
Fig. 2 is the general structure schematic diagram of the utility model embodiment；
Fig. 3 is the structural schematic diagram of Fig. 2 Anodic target assemblies；
Fig. 4 is Fig. 3 large pore deep-hole structures structural schematic diagrams；
Fig. 5 is the structural schematic diagram of adapter in Fig. 2.
Specific implementation mode
Below with reference to attached drawing, the utility model will be further described, it should be noted that following embodiment is with this
Premised on technical solution, detailed embodiment and specific operating process are given, but the scope of protection of the utility model is simultaneously
It is not limited to the present embodiment.
As shown in Fig. 2, a kind of hollow structure X-ray tube, including glass bulb 2, adapter 4, anode assemblies and cathode assembly 1,
The anode assemblies include anode cap 5 and anode target assembly 3, and the anode target assembly 3 welds (soldering) with the anode cap 5.
As shown in Figure 4, Figure 5, the anode target assembly 3 is internally provided with big diameter and deep pore structure 32, the large-diameter deep hole
Structure 32 and anode target assembly 3 are concentric；The aperture D2 of the big diameter and deep pore structure 32 is less than the outer diameter of anode target assembly 3
D1, hole depth L2 are less than the target center of anode target assembly 3 to the distance L1 of the end of anode target assembly 3；The adapter 4 stretches into described
Bosom in big diameter and deep pore structure 32 is simultaneously fixed with anode target assembly 3.
Further, as shown in figure 4, the outer diameter D 1 of anode target assembly 3 is 20mm~50mm, big diameter and deep pore structure 32
Ranging from 10mm~20mm of aperture D2, the range of the distance L1 of the target center of anode target assembly 3 to the end of anode target assembly 3
60mm~150mm, ranging from 50mm~100mm of the hole depth L2 of big diameter and deep pore structure 32.
Further, as shown in Figure 2 and Figure 3, the spiral shell that the adapter 4 passes through 32 deepest inside of big diameter and deep pore structure
Pit 31 is fixed with the anode target assembly 3.
Further, as shown in Fig. 5, Fig. 3, the both ends of the adapter 4 are respectively equipped with external screw thread connecting pin 41 and interior spiral shell
Line connecting hole 42；The external screw thread specification limit of external screw thread connecting pin 41 is M5~M12, the internal thread specification of internal thread connecting hole 42
Ranging from M6~M20；The external screw thread match specifications of the internal thread specification of the threaded hole 31 and the external screw thread connecting pin 41,
External screw thread connecting pin 41 is screwed in threaded hole 31, and internal thread connecting hole 42 is for realizing hollow structure X-ray tube and outside
The fixation and cooperation of portion's radiographic source.
The operation principle of hollow structure X-ray tube：Cathode assembly focus emission electronics, electronics is by anode assemblies high voltage electric field
It acts on high velocity bombardment anode target assembly and generates X-ray；The energy of electronics only has about 1% to be converted to X-ray, remaining is transformed into
Thermal energy；Anode target assembly is heated to be thermally expanded, and the anode target assembly energy of hollow structure will be fixed turn with anode target assembly
One end of connector extends to the position close enough from anode target, as shown in figure 4, the length of anode actual participation expansion is by original
L1 becomes present (L1-L2), to reduce anode entire expanse, achievees the purpose that improve the drift of X-ray tube focal spot.
For those skilled in the art, it can be provided various corresponding according to above technical solution and design
Change and distortion, and all these change and distortions, should be construed as being included in the utility model claims protection domain it
It is interior.
Claims (8)
1. a kind of hollow structure X-ray tube, including glass bulb (2), adapter (4), anode assemblies and cathode assembly (1), the sun
Pole component includes anode cap (5) and anode target assembly (3), and the anode target assembly (3) is welded with the anode cap (5)；It is special
Sign is that the anode target assembly (3) is internally provided with big diameter and deep pore structure；The adapter (4) stretches to the large aperture
Bosom in deep-hole structures (32) is simultaneously fixed with anode target assembly (3).
2. hollow structure X-ray tube according to claim 1, which is characterized in that the big diameter and deep pore structure (32) with
Anode target assembly (3) is concentric.
3. hollow structure X-ray tube according to claim 1, which is characterized in that the big diameter and deep pore structure (32)
Aperture is less than the outer diameter of anode target assembly (3), and hole depth is less than the target center of anode target assembly (3) to the end of anode target assembly (3)
Distance.
4. hollow structure X-ray tube according to claim 3, which is characterized in that the outer diameter of anode target assembly (3) is 20mm
~50mm, the ranging from 10mm~20mm in the aperture of big diameter and deep pore structure (32), the target center of anode target assembly (3) to anode target
Range 60mm~150mm of the distance of the end of component (3), the ranging from 50mm of the hole depth of big diameter and deep pore structure (32)~
100mm。
5. hollow structure X-ray tube according to claim 1, which is characterized in that the adapter (4) passes through big diameter and deep
Pore structure (32) innermost threaded hole (31) is fixed with the anode target assembly (3).
6. hollow structure X-ray tube according to claim 5, which is characterized in that the both ends of the adapter (4) are set respectively
There are external screw thread connecting pin (41) and internal thread connecting hole (42)；The internal thread specification of the threaded hole (31) and the external screw thread connect
The external screw thread match specifications at end (41) are connect, external screw thread connecting pin (41) are screwed in threaded hole (31), internal thread connection
Hole (42) for realizing hollow structure X-ray tube and outer rays source fixation and cooperation.
7. hollow structure X-ray tube according to claim 6, which is characterized in that the external screw thread of external screw thread connecting pin (41)
Specification limit is M5~M12, internal thread specification ranging from M6~M20 of internal thread connecting hole (42).
8. hollow structure X-ray tube according to claim 1, which is characterized in that the anode cap (5) and anode target assembly
(3) it is fixed by being brazed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820202082.1U CN207731893U (en) | 2018-02-05 | 2018-02-05 | A kind of hollow structure X-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820202082.1U CN207731893U (en) | 2018-02-05 | 2018-02-05 | A kind of hollow structure X-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207731893U true CN207731893U (en) | 2018-08-14 |
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ID=63081340
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820202082.1U Active CN207731893U (en) | 2018-02-05 | 2018-02-05 | A kind of hollow structure X-ray tube |
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| Country | Link |
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| CN (1) | CN207731893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321071A (en) * | 2018-02-05 | 2018-07-24 | 公安部第研究所 | A kind of hollow structure X-ray tube |
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2018
- 2018-02-05 CN CN201820202082.1U patent/CN207731893U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321071A (en) * | 2018-02-05 | 2018-07-24 | 公安部第研究所 | A kind of hollow structure X-ray tube |
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