CN209087760U - A kind of CT tube filament with lead - Google Patents
A kind of CT tube filament with lead Download PDFInfo
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- CN209087760U CN209087760U CN201821616529.6U CN201821616529U CN209087760U CN 209087760 U CN209087760 U CN 209087760U CN 201821616529 U CN201821616529 U CN 201821616529U CN 209087760 U CN209087760 U CN 209087760U
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Abstract
A kind of CT tube filament with lead, including first lead, the second lead and filament, the first end of filament are connect with first lead, and the second end of filament is connect with the second lead, and filament is made of rhenium tungsten wire；First lead, the second lead include the cathode section made of molybdenum, the welding section made of teleoseal and draw section outside made of copper stranded conductor, cathode section, welding section draw section outside and are sequentially connected, cathode section is connect with the respective end of rhenium tungsten wire, welding section is used to weld with the glass shell of CT bulb, draws section outside and is in outside the glass shell of CT bulb.The filament made of rhenium tungsten wire, plasticity is higher, and stability and intensity with higher at high temperature, lead portion by cathode section, welding section, draw section outside and constitute, further increase filament adaptability in a high temperauture environment.
Description
Technical field
The utility model relates to CT bulb more particularly to a kind of CT tube filaments with lead.
Background technique
CT machine is a kind of multiple functional condition detection instrument, and with the development of technology, CT machine is with high resolution and directly
See, accurate diagnosis effect and popularized, be widely used in medical field.CT bulb, also referred to as X-ray
Pipe, is the core component in CT machine, and for generating X-ray, the technical perfection of CT bulb whether directly affects the work effect of CT machine
Fruit.X-ray tube mainly includes anode, cathode and glass shell, and anode is made of anode head, anode cap, glass collar and anode handle,
Cathode is mainly made of filament, focus mask (or referred to as cathode taps), cathode sheath and glass stem etc..Its working principle is that: it uses
Filament made of tungsten wire can emit sufficient amount of electronics, as electron source at high temperature；Plus enough between anode, cathode
Voltage (kilovolt grade) formed strong electrical field, accelerate electronics to anode movement and form high-speed electron flow；The effect of anode is to inhale
Draw electronics and accelerate electronics, and make the target surface of the electron bombardment anode head of high-speed motion, target surface, which is subjected to electron bombardment, makes it sharply
It is obstructed and generates X-ray.The electrode system of entire X-ray tube is encapsulated in the glass shell of high vacuum, and glass shell is to support
Yin, yang the two poles of the earth simultaneously provide vacuum environment necessary to high-velocity electrons flight and high temperature filament normal work.Wherein it is made of tungsten wire
Filament hardness it is big, it is more difficult to process, and tungsten wire Yi Dan through applied at elevated temperature occur recrystallization after once become very crisp, be hit
Or it is easily broken in the case where vibration.Most of X-ray tube cathode legs are plain conductor, the composition of cathode leg and glass shell
By the way of plain conductor and glass infiltration sealing, but since plain conductor diameter is smaller, all exist connection or after
Continuous operating process conducting wire is easy to be rotated distortion by external force, to destroy original sealing circle because of structural strength deficiency
Face generates X-ray tube air leakage failure.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of CT tube filament with lead, this CT with lead
Tube filament plasticity is higher, and stability and intensity with higher at high temperature.The technical solution adopted is as follows:
A kind of CT tube filament with lead, including first lead, the second lead and filament, the first end of filament and first
Lead connection, the second end of filament are connect with the second lead, it is characterised in that: the filament is made of rhenium tungsten wire；Described first
Lead, the second lead include the cathode section made of molybdenum, the welding section made of teleoseal and made of copper stranded conductor
Draw section outside, cathode section, welding section draw section outside and are sequentially connected, the respective end connection of cathode section and filament, welding section be used for it is described
The glass shell of CT bulb connects, and draws section outside and is in outside the glass shell of the CT bulb.
Above-mentioned rhenium tungsten wire is the alloy material made of rhenium and tungsten.
The filament made of rhenium tungsten wire can emit sufficient amount of electronics, as electron source at high temperature；Rhenium tungsten wire has
Higher resistivity, surface oxidation-resistant is good, and plasticity is higher at low temperature, and easily fabricated, moulding has good processing performance
And solderability, and stability and intensity with higher at high temperature, it cools down again after long-time service, material will not become fragile.
First lead, the second lead are divided into cathode section, welding section and outside draw section, cathode section is made of molybdenum, and cathode section is made to have resistance to height
The feature of temperature, makes that it is suitable for connecting with the respective end of rhenium tungsten wire；Welding section is made of teleoseal, and welding section is made to have glass
After the general intensity of glass and hardness, with the glass shell welding of CT bulb, it is not easy to distortion is rotated by external force, from
And original seal interface is avoided damage to, it avoids generating X-ray tube air leakage failure；Welding section material expansion and glass swelling
After coefficient similar, with the welding of the glass shell of CT bulb, can avoid glass shell because of frit caused by temperature change or
Fragmentation, to achieve the purpose that improve vacuum degree；Draw section outside and be made of copper stranded conductor, make it is outer draw section and have good conductive property, locate
Filament supply is connected outside the glass shell of CT bulb；The lead portion of filament adapts to energy in a high temperauture environment in summary
Power further increases.
As a preferred embodiment of the present invention, the filament diameter is 0.22 millimeter, and filament is helical heater, spiral
The axle diameter of shape filament is 1.20 millimeters.
As the further preferred embodiment of the utility model, the circle number of the helical heater is 13 circles, the length of filament
It is 9 millimeters.This filament is used for small focus.
As the further preferred embodiment of the utility model, the circle number of the helical heater is 24 circles, the length of filament
It is 13 millimeters.This filament is used for large focal spot.
As a preferred embodiment of the present invention, the first lead, the diameter of cathode section is 1.20 millis in the second lead
Rice, the diameter of welding section are 1.75 millimeters, and the diameter for drawing section outside is 2.00 millimeters.
The utility model compared with prior art, has the advantages that
The filament made of rhenium tungsten wire, plasticity is higher, and stability and intensity with higher at high temperature,
Lead portion by cathode section, welding section, draw section outside and constitute, further increase filament adaptability in a high temperauture environment, thus
Filament is set to meet the job requirement of CT bulb.
Detailed description of the invention
Fig. 1 the utility model structure diagram；
Fig. 2 is the structural schematic diagram of first lead or the second lead in Fig. 1.
Specific embodiment
It is described further with reference to the accompanying drawing with preferred embodiments of the present invention.
As shown in Figure 1 and Figure 2, a kind of CT tube filament with lead, including first lead 1, the second lead 2 and filament 3,
The first end of filament 3 is connect with first lead 1, and the second end of filament 3 is connect with the second lead 2, and filament 3 is made of rhenium tungsten wire；
First lead 1, the second lead 2 include the cathode section 4 made of molybdenum, the welding section 5 made of teleoseal and are twisted by copper
It is thread it is outer draw section 6, cathode section 4, welding section 5 draw section 6 outside and are sequentially connected, and cathode section 4 is connect with the respective end of filament 3, is welded
Section 5 is connect for connecting (welding) with the glass shell (not shown) of CT bulb, draws the glass shell that section 6 is in CT bulb outside
Outside.
Above-mentioned rhenium tungsten wire is the alloy material made of rhenium and tungsten.
Above-mentioned filament diameter is 0.22 millimeter, and filament is helical heater, and the axle diameter of helical heater is 1.20 millis
Rice.
The circle number of helical heater is 13 circles, and the length of filament is 9 millimeters.This filament is used for small focus.
The circle number of helical heater is 24 circles, and the length of filament is 13 millimeters.This filament is used for large focal spot.
The diameter of cathode section is 1.20 millimeters in above-mentioned first lead 1, the second lead 2, and the diameter of welding section is 1.75 millis
Rice, the diameter for drawing section outside is 2.00 millimeters.
The filament 3 made of rhenium tungsten wire can emit sufficient amount of electronics, as electron source at high temperature；Rhenium tungsten wire tool
There is higher resistivity, surface oxidation-resistant is good, and plasticity is higher at low temperature, and easily fabricated, moulding has good processability
Energy and solderability, and stability and intensity with higher at high temperature, cool down, material will not become again after long-time service
It is crisp.First lead 1, the second lead 2 are divided for cathode section 4, welding section 5 and outside draw section 6, cathode section 4 is made of molybdenum, makes cathode section
4 have the characteristics that resistant to high temperature, make that it is suitable for connecting with the respective end of rhenium tungsten wire；Welding section 5 is made of teleoseal, makes to weld
After section 5 is connect with the general intensity of glass and hardness, with the glass shell welding of CT bulb, it is not easy to be occurred by external force
Rotation twist avoids generating X-ray tube air leakage failure to avoid damage to original seal interface；5 material of welding section expansion system
Number is close with glass expansion coefficient, after the glass shell welding of CT bulb, caused by can avoid glass shell because of temperature change
Frit or fragmentation, with achieve the purpose that improve vacuum degree；Draw section 6 outside to be made of copper stranded conductor, there is outer section 6 of drawing well
Electric conductivity, connect filament supply outside glass shell in CT bulb；The lead portion of filament is in high temperature in summary
Adaptability under environment further increases.
In addition, it should be noted that, the specific embodiments described in this specification, each section title etc. can not
Together, all equivalent or simple changes done according to structure, feature and principle described in the concept of the patent of the utility model are included in this
In the protection scope of utility model patent.Those skilled in the art of the present invention can be to described specific reality
Example is applied to do various modifications or additions or be substituted in a similar manner, structure without departing from the utility model or
Beyond the scope defined by this claim, it all should belong to the protection range of the utility model.
Claims (5)
1. a kind of CT tube filament with lead, including first lead, the second lead and filament, the first end of filament are drawn with first
Line connection, the second end of filament are connect with the second lead, it is characterised in that: the filament is made of rhenium tungsten wire；Described first draws
Line, the second lead include the cathode section made of molybdenum, the welding section made of teleoseal and made of copper stranded conductor it is outer
Draw section, cathode section, welding section draw section outside and be sequentially connected, and the respective end connection of cathode section and filament, welding section is used for and the CT
The glass shell of bulb connects, and draws section outside and is in outside the glass shell of the CT bulb.
2. the CT tube filament with lead as described in claim 1, it is characterized in that: the filament diameter is 0.22 millimeter, lamp
Silk is helical heater, and the axle diameter of helical heater is 1.20 millimeters.
3. the CT tube filament with lead as claimed in claim 2, it is characterized in that: the circle number of the helical heater is 13
Circle, the length of filament are 9 millimeters.
4. the CT tube filament with lead as claimed in claim 2, it is characterized in that: the circle number of the helical heater is 24
Circle, the length of filament are 13 millimeters.
5. the CT tube filament with lead as described in claim 1, it is characterized in that: negative in the first lead, the second lead
The diameter of pole section is 1.20 millimeters, and the diameter of welding section is 1.75 millimeters, and the diameter for drawing section outside is 2.00 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821616529.6U CN209087760U (en) | 2018-09-30 | 2018-09-30 | A kind of CT tube filament with lead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821616529.6U CN209087760U (en) | 2018-09-30 | 2018-09-30 | A kind of CT tube filament with lead |
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| Publication Number | Publication Date |
|---|---|
| CN209087760U true CN209087760U (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821616529.6U Active CN209087760U (en) | 2018-09-30 | 2018-09-30 | A kind of CT tube filament with lead |
Country Status (1)
| Country | Link |
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| CN (1) | CN209087760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211027A (en) * | 2020-01-16 | 2020-05-29 | 清华大学 | Plane irradiation X-ray light source and irradiation equipment |
-
2018
- 2018-09-30 CN CN201821616529.6U patent/CN209087760U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211027A (en) * | 2020-01-16 | 2020-05-29 | 清华大学 | Plane irradiation X-ray light source and irradiation equipment |
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