Vacuum dynamic seal imaging pinhole and radiation source composite adjustment mechanism

Abstract

The present invention relates to the field of plasma diagnosis technology, and in particular to a vacuum dynamic sealed imaging pinhole and radioactive source composite adjustment mechanism. The bipolar cone pinhole and the radioactive source chamber are connected by a movable connecting rod, and are placed in a sealed chamber composed of a sealing sleeve, a sealing ring and a sealing flange. The adjustment mechanism is used for positioning switching to achieve precise switching between the imaging pinhole and the radioactive source of the nuclear measurement imaging diagnosis system of the nuclear fusion device. The present invention effectively solves the precise switching between the imaging pinhole and the radioactive source of the vacuum sealed imaging diagnosis system, greatly simplifies the difficulty and procedure of replacement, improves the efficiency of test calibration and the accuracy of measurement results, and is suitable for magnetic confinement nuclear fusion nuclear measurement imaging diagnosis system.

Description

Technical Field

[0001] The invention relates to the technical field of plasma diagnosis, and in particular to a vacuum dynamic sealing imaging pinhole and a radiation source composite regulating mechanism. Background Art

[0002] There are two main tasks to be completed before and during the measurement of magnetic confinement nuclear fusion nuclear measurement imaging diagnosis:

[0003] 1. Before measurement, install the radiation source to the position of pinhole imaging to debug and calibrate the diagnostic system, such as: collimation of the optical path, shape of the output pulse, energy calibration, etc.;

[0004] 2. During the measurement, the imaging pinhole mechanism is adjusted and installed to the position of the pinhole imaging to perform plasma imaging measurement.

[0005] Therefore, nuclear measurement imaging diagnosis requires frequent replacement of the radiation source and pinhole mechanism during commissioning, calibration and measurement.

[0006] Since the radiation source is radioactive, a complicated procedure is required to ensure safety when replacing it. For imaging diagnostic systems with vacuum seals, the difficulty and procedures of replacing the radiation source and the pinhole mechanism are greatly increased. Summary of the invention

[0007] The purpose of the present invention is to address the above-mentioned defects in the prior art and provide a vacuum dynamic sealing imaging pinhole and radiation source composite adjustment mechanism, which can easily and simply perform precise switching between the two, greatly simplifying the difficulty and procedure of replacement, improving the efficiency of test calibration and the accuracy of measurement results, and at the same time completely solving the vacuum problem caused by replacement.

[0008] The technical solution of the present invention is as follows:

[0009] A vacuum dynamic seal imaging pinhole and radioactive source composite adjustment mechanism for nuclear measurement of nuclear fusion device, comprising: a lifting handle, a positioning and fixing pin, a moving connecting rod, a nut, a sealing sleeve, a support 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 room, a cover, a radioactive source, a radioactive source room, an adjustment bracket assembly and a screw hole. The bipolar cone small hole and the radioactive source room are connected by a moving connecting rod, placed in a sealed room composed of a sealing sleeve, a sealing ring and a sealing flange, and the positioning switching is performed by the adjustment mechanism to realize the precise switching between the imaging pinhole and the radioactive source of the nuclear measurement imaging diagnosis system of the nuclear fusion device.

[0010] The bipolar cone pinhole and the radiation source chamber are connected by a movable connecting rod, and the vacuum seal is switched by adjusting the positioning system. The lifting handle is installed at the top of the movable connecting rod, and the positioning pin is fixed to the support frame through the adjusting bracket assembly. These components together constitute the adjustment and positioning system. The vacuum sealing of the diagnostic system is guaranteed by the vacuum sealing system during the switching adjustment. The sealing system consists of the following components: nut, sealing sleeve, upper sealing ring, middle sealing cover, middle sealing ring, front sealing flange, rear sealing flange, lower sealing ring and screw hole. The radiation source is fixed by the baffle cover and the radiation source chamber and is located in the lead shielding room. By adjusting the positioning system and the vacuum sealing system, it is convenient and simple to perform precise switching between the imaging pinhole and the radiation source.

[0011] A vacuum dynamic seal imaging pinhole and radioactive source composite adjustment mechanism, including an adjustment and positioning mechanism, a vacuum sealing mechanism, a radiation shielding chamber and an imaging pinhole, specifically including a lifting handle, a positioning and fixing pin, a movable connecting rod, a nut, a sealing sleeve, a support 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 baffle, a radioactive source, a radioactive source chamber, an adjustment bracket assembly and a screw hole;

[0012] The adjustment and positioning mechanism includes a lifting handle, a positioning and fixing pin, a movable connecting rod, a support frame and an adjustment bracket assembly, wherein the lifting handle is located at the top of the movable connecting rod and is fixedly connected to the movable connecting rod. The movable connecting rod can be adjusted up and down through the lifting handle. The positioning and fixing pin is located below the lifting handle and is fixed to the support frame through the adjustment bracket assembly. When the movable connecting rod is adjusted to a predetermined position, the movable connecting rod is fixed by the positioning and fixing pin.

[0013] A vacuum dynamic sealing imaging pinhole and a radioactive source composite adjustment mechanism, wherein the vacuum sealing mechanism comprises a nut, a sealing sleeve, a support 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;

[0014] The nut, sealing sleeve and upper sealing ring are used for the dynamic seal of the upper end of the moving connecting rod. The installation of these three parts is smooth from top to bottom: nut, sealing sleeve and upper sealing ring. The middle sealing cover presses the middle sealing ring to vacuum seal the upper end of the moving connecting rod.

[0015] The vacuum dynamic seal imaging pinhole and radiation source composite adjustment mechanism, the lower sealing ring is located between the support frame and the lead shielding room, and is used for vacuum sealing between the support frame and the lead shielding room. The front sealing flange, rear sealing flange and screw holes are used for vacuum sealing between the diagnostic system and the device.

[0016] A vacuum dynamic sealing imaging pinhole and a radiation source composite adjustment mechanism, the radiation shielding room comprises a lower sealing ring, a lead shielding room, a baffle, a radiation source and a radiation source room; the lower sealing ring is located above the lead shielding room, the baffle is located at the front end of the radiation source room, the radiation source is located in the radiation source room, the radiation source room is fixedly connected to the lower end of the movable connecting rod, and the baffle and the radiation source room are located in the lead shielding room.

[0017] The vacuum dynamic sealing imaging pinhole and the radiation source composite adjustment mechanism, the imaging pinhole is a bipolar cone small hole mechanism, the bipolar cone small hole is located at the end of the moving connecting rod and is fixed on the moving connecting rod.

[0018] A vacuum dynamic sealing imaging pinhole and a radioactive source composite regulating mechanism, wherein the device is applied to a magnetic confinement nuclear fusion measurement imaging system.

[0019] A vacuum dynamic sealing imaging pinhole and a radioactive source composite regulating mechanism, wherein the device is applied to a detection system of a fusion reactor.

[0020] The beneficial effects of the present invention are:

[0021] The present invention effectively solves the problem of accurate switching between the imaging pinhole and the radiation source of the vacuum-sealed imaging diagnostic system, greatly simplifies the difficulty and procedure of replacement, improves the efficiency of test calibration and the accuracy of measurement results, and is suitable for magnetic confinement nuclear fusion nuclear measurement imaging diagnostic systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Cross-sectional view of vacuum dynamic seal imaging pinhole and radiation source composite adjustment mechanism

[0023] Figure 2 Front view of vacuum dynamic seal imaging pinhole and radiation source composite adjustment mechanism

[0024] Among them, 1-lifting handle; 2-positioning fixing pin; 3-moving connecting rod; 4-nut; 5-sealing sleeve; 6-support frame; 7-upper sealing ring; 8-middle sealing cover; 9-middle sealing ring; 10-rear sealing flange; 11-front sealing flange; 12-bipolar cone small hole; 13-lower sealing ring; 14-lead shielding room; 15-blocking cover; 16-radiation source; 17-radiation source room; 18-adjusting bracket assembly; 19-screw hole. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Magnetic confinement nuclear fusion nuclear measurement imaging diagnosis requires system testing and calibration and normal measurement operation before and during measurement, so the radiation source and pinhole mechanism need to be replaced frequently. Due to the radioactivity of the radiation source and the vacuum sealing of the diagnostic system, replacing the radiation source and pinhole mechanism requires cumbersome procedures and steps, which reduces work efficiency and affects measurement accuracy. In order to simplify the operation and improve efficiency and accuracy, we designed a vacuum dynamic sealing imaging pinhole and radiation source composite adjustment mechanism.

[0027] like Figure 1 and Figure 2 As shown, the mechanism includes: a lifting handle 1, a positioning and fixing pin 2, a movable connecting rod 3, a nut 4, a sealing 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 cone hole 12, a lower sealing ring 13, a lead shielding room 14, a baffle 15, a radiation source 16, a radiation source room 17, an adjustment bracket assembly 18 and a screw hole 19.

[0028] The adjustment and positioning mechanism includes: a lifting handle 1, a positioning and fixing pin 2, a moving connecting rod 3, a support frame 6 and an adjustment bracket assembly 17. The lifting handle 1 is located at the top of the moving connecting rod 6 and is fixedly connected to the moving connecting rod 6. Figure 1 As shown, the movable connecting rod 6 can be adjusted up and down by the lifting handle 1. The positioning fixing pin 2 is located below the lifting handle 1 and is fixed to the support frame 6 by adjusting the bracket assembly 17. Figure 2 When the movable link 6 is adjusted to a predetermined position, the movable link 6 is fixed by the positioning fixing pin 2.

[0029] The vacuum sealing mechanism includes: nut 4, sealing sleeve 5, support frame 6, upper sealing ring 7, middle sealing cover 8, middle sealing ring 9, front sealing flange 11, rear sealing flange 10, lower sealing ring 13 and screw hole 18. Nut 4, sealing sleeve 5 and upper sealing ring 7 are used for dynamic sealing at the upper end of the mobile connecting rod. The installation of these three parts is smooth from top to bottom: nut 4, sealing sleeve 5 and upper sealing ring 7, as shown in FIG. Figure 1 As shown. The middle sealing cover 8 presses the middle sealing ring 9 to vacuum seal the upper end of the moving connecting rod. The lower sealing ring 13 is located between the support frame and the lead shielding room and is used for vacuum sealing between the support frame and the lead shielding room. The front sealing flange 11, the rear sealing flange 10 and the screw hole 18 are used for vacuum sealing between the diagnostic system and the device.

[0030] The radiation shielding room includes: a lower sealing ring 13, a lead shielding room 14, a cover 15, a radiation source 16 and a radiation source room 17. Figure 1As shown, the lower sealing ring 13 is located above the lead shielding room 14, the 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 room 17 is fixedly connected to the lower end of the movable connecting rod. The cover 15 and the radiation source room 17 are located in the lead shielding room 14.

[0031] The imaging pinhole is a bipolar cone pinhole mechanism, and the bipolar cone pinhole 12 is located at the end of the moving connecting rod and is fixed on the moving connecting rod.

Claims

1. A vacuum dynamic sealing imaging pinhole and a radioactive source composite adjustment mechanism, including an adjustment and positioning mechanism, a vacuum sealing mechanism, a radiation shielding chamber and an imaging pinhole; Features: The adjustment and positioning mechanism includes a lifting handle, a positioning and fixing pin, a movable connecting rod, a support frame and an adjustment support assembly, wherein the lifting handle is located at the top of the movable connecting rod and is fixedly connected to the movable connecting rod, the movable connecting rod can be adjusted up and down by the lifting handle, the positioning and fixing pin is located below the lifting handle and is fixed to the support frame by the adjustment support assembly, and when the movable connecting rod is adjusted to a predetermined position, the movable connecting rod is fixed by the positioning and fixing pin; The lifting handle is installed on the top of the moving connecting rod, and the positioning fixing pin is fixed to the supporting frame through the adjusting bracket assembly; The vacuum sealing mechanism comprises a nut, a sealing sleeve, a support 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, sealing sleeve and upper sealing ring are used for the dynamic seal of the upper end of the moving connecting rod. The installation of these three parts is smooth from top to bottom: nut, sealing sleeve and upper sealing ring. The middle sealing cover presses the middle sealing ring to vacuum seal the upper end of the moving connecting rod. The lower sealing ring is located between the support frame and the lead shielding room and is used for vacuum sealing between the support frame and the lead shielding room. The front sealing flange, the rear sealing flange and the screw holes are used for vacuum sealing between the diagnostic system and the device. The radiation shielding room comprises a lower sealing ring, a lead shielding room, a baffle, a radiation source and a radiation source room; the lower sealing ring is located above the lead shielding room, the baffle is located at the front end of the radiation source room, the radiation source is located in the radiation source room, the radiation source room is fixedly connected to the lower end of the movable connecting rod, and the baffle and the radiation source room are located in the lead shielding room; The imaging pinhole is a bipolar cone pinhole mechanism, the bipolar cone pinhole is located at the end of the moving connecting rod and is fixed on the moving connecting rod. The bipolar cone pinhole and the radiation source chamber are connected through the moving connecting rod, and the vacuum sealing is switched by adjusting the positioning system.

2. The vacuum dynamic seal imaging pinhole and radiation source composite adjustment mechanism according to claim 1, characterized in that: Applied in magnetic confinement nuclear fusion measurement imaging system.

3. The vacuum dynamic seal imaging pinhole and radiation source composite adjustment mechanism according to claim 1, characterized in that: Used in the detection system of fusion reactor.

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