CN111839556A - Vacuum dynamic sealing imaging pinhole and radioactive source composite adjusting mechanism - Google Patents
Vacuum dynamic sealing imaging pinhole and radioactive source composite adjusting mechanism Download PDFInfo
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- CN111839556A CN111839556A CN201910348180.5A CN201910348180A CN111839556A CN 111839556 A CN111839556 A CN 111839556A CN 201910348180 A CN201910348180 A CN 201910348180A CN 111839556 A CN111839556 A CN 111839556A
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- 238000007789 sealing Methods 0.000 title claims abstract description 104
- 230000002285 radioactive effect Effects 0.000 title claims abstract description 54
- 238000003384 imaging method Methods 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title abstract description 8
- 238000005259 measurement Methods 0.000 claims abstract description 20
- 230000004927 fusion Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000005855 radiation Effects 0.000 claims description 20
- 230000000903 blocking effect Effects 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000003745 diagnosis Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
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Abstract
The invention relates to the technical field of plasma diagnosis, in particular to a composite adjusting mechanism for a vacuum dynamic seal imaging pinhole and a radioactive source. The bipolar cone small hole and the radioactive source chamber are connected through a movable connecting rod, are placed in a sealing chamber consisting of a sealing pressing sleeve, a sealing ring and a sealing flange, and are positioned and switched by utilizing an adjusting mechanism, so that the precise switching between the imaging pinhole and the radioactive source of the nuclear measurement imaging diagnostic system of the nuclear fusion device is realized. The invention effectively solves the problem of accurate switching between the imaging pinhole and the radioactive source of the vacuum sealed imaging diagnostic system, greatly simplifies the replacement difficulty and procedure, improves the efficiency of test calibration and the precision of the measurement result, and is suitable for the magnetic confinement nuclear fusion nuclear measurement imaging diagnostic system.
Description
Technical Field
The invention relates to the technical field of plasma diagnosis, in particular to a composite adjusting mechanism for a vacuum dynamic seal imaging pinhole and a radioactive source.
Background
The magnetic confinement nuclear fusion nuclear measurement imaging diagnosis is mainly completed by two major tasks before and during measurement:
1. Before measurement, a radioactive source is arranged at a position for imaging a small hole to debug and calibrate a diagnostic system, such as: collimation of light path, shape of output pulse, energy calibration and the like;
2. during measurement, the imaging pinhole mechanism is adjusted to be mounted to the position of pinhole imaging for plasma imaging measurement.
Therefore, nuclear metrology imaging diagnostics require frequent replacement of the radiation source and pinhole mechanism when performing commissioning and measurements.
Since the radiation source is radioactive, a cumbersome procedure is required for replacement to ensure safety. The difficulty and procedure of replacing the radiation source and pinhole mechanism is greatly increased for imaging diagnostic systems with vacuum seals.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a vacuum dynamic seal imaging pinhole and radioactive source composite adjusting mechanism which can be used for conveniently and simply accurately switching the imaging pinhole and the radioactive source, greatly simplifying the replacement difficulty and procedure, improving the efficiency of test calibration and the precision of a measurement result, and completely solving the vacuum problem caused by replacement.
The technical scheme of the invention is as follows:
a vacuum dynamic seal imaging pinhole and radioactive source composite adjusting mechanism applied to nuclear measurement of a nuclear fusion device comprises: the device comprises a lifting handle, a positioning fixing pin, a movable connecting rod, a screw cap, a sealing pressing sleeve, a supporting frame, an upper sealing ring, a middle sealing cover, a middle sealing ring, a rear sealing flange, a front sealing flange, a bipolar cone small hole, a lower sealing ring, a lead shielding chamber, a blocking cover, a radioactive source chamber, an adjusting bracket assembly and a screw hole. The bipolar cone small hole and the radioactive source chamber are connected through a movable connecting rod, are placed in a sealing chamber consisting of a sealing pressing sleeve, a sealing ring and a sealing flange, and are positioned and switched by utilizing an adjusting mechanism, so that the precise switching between the imaging pinhole and the radioactive source of the nuclear measurement imaging diagnostic system of the nuclear fusion device is realized.
The bipolar cone small hole and the radioactive source chamber are connected through a movable connecting rod, and vacuum sealing switching is performed through a positioning adjusting system. The lifting handle is arranged at the top end of the movable connecting rod, the positioning fixing pin is fixed on the supporting frame through the adjusting bracket component, and the components jointly form an adjusting and positioning system. The vacuum tightness of the diagnostic system during switching of the adjustment is ensured by a vacuum sealing system, which consists of the following components: the screw cap, sealed pressure cover, go up sealing washer, well sealed lid, well sealing washer, preceding sealing flange, back sealing flange, lower sealing washer and screw are constituteed. The radioactive source is fixed by the blocking cover and the radioactive source chamber and is positioned in the lead shielding chamber. The precise switching between the imaging pinhole and the radioactive source can be conveniently and simply carried out by adjusting the positioning system and the vacuum sealing system.
The vacuum dynamic seal imaging pinhole and radioactive source compound adjusting mechanism comprises an adjusting and positioning mechanism, a vacuum sealing mechanism, a radiation shielding chamber and an imaging pinhole, and specifically comprises a lifting handle, a positioning fixing pin, a movable connecting rod, a screw cap, a seal pressing sleeve, a support frame, an upper seal ring, a middle seal cover, a middle seal ring, a rear seal flange, a front seal flange, a bipolar cone small hole, a lower seal ring, a lead shielding chamber, a blocking cover, a radioactive source chamber, an adjusting bracket component and a screw hole;
The adjusting and positioning mechanism comprises a lifting handle, a positioning fixing pin, a moving connecting rod, a supporting frame and an adjusting bracket component, wherein the lifting handle is positioned at the top end of the moving connecting rod and is fixedly connected with the moving connecting rod, the moving connecting rod can be adjusted up and down through the lifting handle, the positioning fixing pin is positioned below the lifting handle and is fixed on the supporting frame through the adjusting bracket component, and when the moving connecting rod is adjusted to a preset position, the moving connecting rod is fixed through the positioning fixing pin.
The vacuum dynamic sealing imaging pinhole and radioactive source compound adjusting mechanism comprises a screw cap, a sealing pressing sleeve, a supporting frame, an upper sealing ring, a middle sealing cover, a middle sealing ring, a front sealing flange, a rear sealing flange, a lower sealing ring and a screw hole;
the nut, sealed pressure cover and last sealing washer are used for removing the movive seal of connecting rod upper end, and the installation of these three parts is from top to bottom in proper order smoothly: the middle sealing cover presses the middle sealing ring to carry out vacuum sealing on the upper end of the movable connecting rod;
the vacuum dynamic sealing imaging pinhole and the radioactive source compound adjusting mechanism, the lower sealing ring is positioned between the supporting frame and the lead shielding chamber and used for vacuum sealing between the supporting frame and the lead shielding chamber, and the front sealing flange, the rear sealing flange and the screw hole are used for vacuum sealing between the diagnostic system and the device.
The vacuum dynamic seal imaging pinhole and radioactive source compound adjusting mechanism is characterized in that a radiation shielding chamber comprises a lower sealing ring, a lead shielding chamber, a blocking cover, a radioactive source and a radioactive source chamber; the lower sealing ring is positioned above the lead shielding chamber, the blocking cover is positioned at the front end of the radioactive source chamber, the radioactive source is positioned in the radioactive source chamber, the radioactive source chamber is fixedly connected with the lower end of the movable connecting rod, and the blocking cover and the radioactive source chamber are positioned in the lead shielding chamber.
The vacuum dynamic sealing imaging pinhole and the radioactive source compound adjusting mechanism, the imaging pinhole is a bipolar cone small hole mechanism, and the bipolar cone small hole is positioned on the movable connecting rod, is interrupted and is fixed on the movable connecting rod.
The device is applied to a magnetic confinement nuclear fusion measurement imaging system.
The device is applied to a detection system of a fusion reactor.
The invention has the beneficial effects that:
the invention effectively solves the problem of accurate switching between the imaging pinhole and the radioactive source of the vacuum sealed imaging diagnostic system, greatly simplifies the replacement difficulty and procedure, improves the efficiency of test calibration and the precision of the measurement result, and is suitable for the magnetic confinement nuclear fusion nuclear measurement imaging diagnostic system.
Drawings
FIG. 1 is a cross-sectional view of a vacuum dynamic seal imaging pinhole and radioactive source composite adjusting mechanism
FIG. 2 is a front view of a vacuum dynamic seal imaging pinhole and radioactive source composite adjusting mechanism
Wherein, 1-lifting the handle; 2-positioning fixing pins; 3-moving the connecting rod; 4-a screw cap; 5-sealing and pressing the sleeve; 6-a support frame; 7-upper sealing ring; 8-middle sealing cover; 9-middle sealing ring; 10-rear sealing flange; 11-front sealing flange; 12-bipolar tapered aperture; 13-lower sealing ring; 14-lead shielded room; 15-a blocking cover; 16-a radioactive source; 17-a radiation source chamber; 18-adjusting the bracket assembly; 19-screw hole.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
Magnetic confinement nuclear fusion nuclear measurement imaging diagnosis requires test calibration and normal measurement operation of the system before and during measurement, so that the radioactive source and the pinhole mechanism need to be replaced frequently. Due to the radioactivity of the radioactive source and the vacuum tightness of the diagnostic system, complicated procedures and steps are required to replace the radioactive source and the pinhole mechanism, thereby reducing the working efficiency and affecting the measurement accuracy. In order to simplify operation and improve efficiency and precision, a vacuum dynamic sealing imaging pinhole and radioactive source compound adjusting mechanism is designed.
As shown in fig. 1 and 2, the mechanism includes: the device comprises a lifting handle 1, a positioning fixing pin 2, a movable connecting rod 3, a screw cap 4, a sealing pressing sleeve 5, a support frame 6, an upper sealing ring 7, a middle sealing cover 8, a middle sealing ring 9, a rear sealing flange 10, a front sealing flange 11, a bipolar taper small hole 12, a lower sealing ring 13, a lead shielding chamber 14, a blocking cover 15, a radioactive source 16, a radioactive source chamber 17, an adjusting bracket assembly 18 and a screw hole 19.
Adjust positioning mechanism includes: the lifting handle 1, the positioning fixing pin 2, the movable connecting rod 3, the support frame 6 and the adjusting bracket assembly 17. Wherein the lifting handle 1 is positioned at the top end of the movable connecting rod 6 and is fixedly connected with the movable connecting rod 6, as shown in figure 1, the movable connecting rod 6 can be adjusted up and down through the lifting handle 1. The positioning fixing pin 2 is positioned below the lifting handle 1 and is fixed on the support frame 6 through an adjusting bracket assembly 17, as shown in figure 2. When the moving link 6 is adjusted to a predetermined position, the moving link 6 is fixed by the positioning fixing pin 2.
The vacuum sealing mechanism includes: the sealing device comprises a screw cap 4, a sealing pressing sleeve 5, a supporting frame 6, an upper sealing ring 7, a middle sealing cover 8, a middle sealing ring 9, a front sealing flange 11, a rear sealing flange 10, a lower sealing ring 13 and a screw hole 18. Nut 4, sealed pressure cover 5 and last sealing washer 7 are used for removing the movive seal of connecting rod upper end, and the installation of these three parts is from top to bottom in proper order smoothly: a screw cap 4, a sealing pressing sleeve 5 and an upper sealing ring 7, as shown in figure 1. The middle sealing cover 8 presses the middle sealing ring 9 to carry out vacuum sealing on the upper end of the movable connecting rod. And the lower sealing ring 13 is positioned between the support frame and the lead shielding chamber and is used for vacuum sealing between the support frame and the lead shielding chamber. The front sealing flange 11, the rear sealing flange 10 and the screw holes 18 are used for vacuum sealing between the diagnostic system and the device.
The radiation shielded room includes: a lower sealing ring 13, a lead shielding chamber 14, a blocking cover 15, a radioactive source 16 and a radioactive source chamber 17. As shown in fig. 1, the lower seal ring 13 is located above the lead-shielded room 14, the shield cover 15 is located at the front end of the radiation source room 17, and the radiation source 16 is located in the radiation source room 17. The radiation source chamber 17 is fixedly connected with the lower end of the movable connecting rod. The shield cover 15 and the radiation source chamber 17 are located in the lead-shielded chamber 14.
The imaging pinhole is a bipolar cone pinhole mechanism, and the bipolar cone pinhole 12 is positioned at the interruption of the movable connecting rod and is fixed on the movable connecting rod.
Claims (7)
1. The vacuum dynamic seal imaging pinhole and radioactive source compound adjusting mechanism comprises an adjusting and positioning mechanism, a vacuum sealing mechanism, a radiation shielding chamber and an imaging pinhole, and specifically comprises a lifting handle, a positioning fixing pin, a movable connecting rod, a screw cap, a seal pressing sleeve, a support frame, an upper seal ring, a middle seal cover, a middle seal ring, a rear seal flange, a front seal flange, a bipolar cone small hole, a lower seal ring, a lead shielding chamber, a blocking cover, a radioactive source chamber, an adjusting bracket component and a screw hole;
the method is characterized in that: the adjusting and positioning mechanism comprises a lifting handle, a positioning fixing pin, a movable connecting rod, a support frame and an adjusting support assembly, wherein the lifting handle is positioned at the top end of the movable connecting rod and is fixedly connected with the movable connecting rod;
The lifting handle is arranged at the top end of the movable connecting rod, and the positioning fixing pin is fixed on the supporting frame through the adjusting bracket component.
2. The vacuum dynamic seal imaging pinhole and radiation source compound adjustment mechanism of claim 1, characterized in that: the vacuum sealing mechanism comprises a screw cap, a sealing pressing sleeve, a supporting frame, an upper sealing ring, a middle sealing cover, a middle sealing ring, a front sealing flange, a rear sealing flange, a lower sealing ring and a screw hole;
the nut, sealed pressure cover and last sealing washer are used for removing the movive seal of connecting rod upper end, and the installation of these three parts is from top to bottom in proper order smoothly: the middle sealing cover presses the middle sealing ring to carry out vacuum sealing on the upper end of the movable connecting rod.
3. The vacuum dynamic seal imaging pinhole and radiation source compound adjustment mechanism of claim 2, characterized in that: the lower sealing ring is positioned between the support frame and the lead shielding chamber and used for vacuum sealing between the support frame and the lead shielding chamber, and the front sealing flange, the rear sealing flange and the screw hole are used for vacuum sealing between the diagnostic system and the device.
4. The vacuum dynamic seal imaging pinhole and radiation source compound adjustment mechanism of claim 1, characterized in that: the radiation shielding chamber comprises a lower sealing ring, a lead shielding chamber, a blocking cover, a radioactive source and a radioactive source chamber; the lower sealing ring is positioned above the lead shielding chamber, the blocking cover is positioned at the front end of the radioactive source chamber, the radioactive source is positioned in the radioactive source chamber, the radioactive source chamber is fixedly connected with the lower end of the movable connecting rod, and the blocking cover and the radioactive source chamber are positioned in the lead shielding chamber.
5. The vacuum dynamic seal imaging pinhole and radiation source compound adjustment mechanism of claim 1, characterized in that: the imaging pinhole is a bipolar cone pinhole mechanism, the bipolar cone pinhole is positioned on the interruption of the movable connecting rod and fixed on the movable connecting rod, the bipolar cone pinhole is connected with the radioactive source chamber through the movable connecting rod, and vacuum sealing switching is carried out through the adjusting and positioning system.
6. The vacuum dynamic seal imaging pinhole and radiation source compound adjustment mechanism of claim 1, characterized in that: the device is applied to a magnetic confinement nuclear fusion measurement imaging system.
7. The vacuum dynamic seal imaging pinhole and radiation source compound adjustment mechanism of claim 1, characterized in that: the device is applied to a detection system of a fusion reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910348180.5A CN111839556A (en) | 2019-04-28 | 2019-04-28 | Vacuum dynamic sealing imaging pinhole and radioactive source composite adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910348180.5A CN111839556A (en) | 2019-04-28 | 2019-04-28 | Vacuum dynamic sealing imaging pinhole and radioactive source composite adjusting mechanism |
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| CN111839556A true CN111839556A (en) | 2020-10-30 |
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| CN201910348180.5A Pending CN111839556A (en) | 2019-04-28 | 2019-04-28 | Vacuum dynamic sealing imaging pinhole and radioactive source composite adjusting mechanism |
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2019
- 2019-04-28 CN CN201910348180.5A patent/CN111839556A/en active Pending
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