CN203025199U

CN203025199U - Projectile speed measuring device

Info

Publication number: CN203025199U
Application number: CN 201220710400
Authority: CN
Inventors: 朱根良; 徐红兵; 刘德权; 王明建
Original assignee: Southwestern Institute of Physics
Current assignee: Southwestern Institute of Physics
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2013-06-26
Anticipated expiration: 2022-12-20

Abstract

The utility model relates to a projectile speed measuring device. The projectile speed measuring device comprises a projectile injection pipeline, a diagnosis cavity I, a diagnosis cavity II, an optical source I, an optical source II, an optical receiver I, an optical receiver II, an optical detector I, an optical detector II, a projectile speed measuring unit and a computer processing system, wherein the diagnosis cavity I is communicated with the diagnosis cavity II; the projectile injection pipeline penetrates through the diagnosis cavity I and the diagnosis cavity II sequentially; one side of the diagnosis cavity I is provided with the optical source I, and the other side of the diagnosis cavity I is provided with the optical receiver I; one side of the diagnosis cavity II is provided with the optical source II, and the other side of the diagnosis cavity II is provided with the optical receiver II; the optical receiver I is connected with the optical detector I; the optical receiver II is connected with the optical detector II; and both the output ends of the optical detector I and the optical detector II are connected with the projectile speed measuring unit which is connected with the computer processing system. The projectile speed measuring device can be used for accurately injecting projectiles into different parts of plasma.

Description

The velocity of shot measurement mechanism

Technical field

The utility model relates to a kind of velocity of shot measurement mechanism, particularly relates to a kind of velocity measuring device that is applicable to be injected into the solid-state dust-shot in fusion reactor.

Background technology

Bullet injects the solid-state piller that refers to the millimeter magnitude that is frozen into by hydrogen or its isotope and is injected into fusionplasma.The High-velocity Projectiles core injects and is considered to improve plasma density distribution and strengthens one of most important method of plasma confinement, with respect to common additional supplying gas and the reinforced means such as molecular beam injection, because it has higher reinforced efficient and the darker injection degree of depth is adopted by multinational fusion researcher.In recent years, along with the propelling of the realization of the high constrained operation pattern of tokamak (H mould) and ITER (ITER) work, low speed bullet shallow-layer injects the hot subject that becomes international fusion circle research for the triggering of the alleviation of plasma height restriction mode discharge process edge local mode (ELM) and modulation, L-H conversion and stylobate district effect of parameters etc.Bullet injects the difference of the degree of depth, determined that its impact for plasma is mainly reinforced or the control of H mould, and the bullet injection degree of depth is determined by velocity of shot mainly.The Measurement accuracy of velocity of shot not only can be studied itself and the relation that promotes gaseous tension, and can accurately control its penetration depth and deposition position, in order to carry out the research of the physics problem of different directions.In Physical Experiment in the past, the speed of bullet is to be carved into when estimating it from pellet injection to cause that the distance that plasma parameter passes through between changing constantly obtains, and these class methods are very rough, are difficult to obtain numerical value more accurately.Based on above reason, be necessary to provide a kind of velocity measuring device that can accurately measure velocity of shot.

Summary of the invention

The technical problems to be solved in the utility model is to provide a kind ofly can accurately measure projectile flight speed, thereby exactly bullet is injected into the diverse location of plasma, the velocity of shot measurement mechanism of important parameter is provided for the related physical experiment of carrying out the bullet injection.

Technical solution adopted in the utility model is as follows: a kind of velocity of shot measurement mechanism comprises the bullet flow in pipes, diagnoses chamber one, diagnoses chamber two, light source one, light source two, optical receiver one, optical receiver two, photodetector one, photodetector two, velocity of shot measuring unit, computer processing system;

Described diagnosis chamber one is communicated with diagnosing chamber two; The bullet flow in pipes runs through successively to be diagnosed chamber one and diagnoses chamber two; One side in diagnosis chamber one is provided with light source one, diagnoses the opposite side in chamber one to be provided with optical receiver one; One side in diagnosis chamber two is provided with light source two, diagnoses the opposite side in chamber two to be provided with optical receiver two;

Optical receiver one is connected with photodetector one; Optical receiver two is connected with photodetector two; The output terminal that photodetector one is connected with photodetector all is connected with the velocity of shot measuring unit; The velocity of shot measuring unit is connected with computer processing system.

It is that 650nm, beam diameter are the light emitting diode of 0.6-1mm that described light source one, light source two are wavelength.

Useful technique effect of the present utility model: the utility model adopts the shading method to measure the speed of Flight Projectile, thereby can be injected into bullet exactly the diverse location of plasma, provide important parameter for carry out the Physical Experiment relevant to the bullet injection on nuclear fusion device.

Description of drawings

Figure one is the schematic diagram of a kind of velocity of shot measurement mechanism provided by the utility model.

In figure: 1 is that light source one, 2 is bullet, and 3 is the bullet flow in pipes, and 4 are diagnosis chamber one, 5 is that light source two, 6 is that optical receiver one, 8 is optical receiver two for diagnosing chamber two, 7,9 is that photodetector one, 10 is the velocity of shot measuring unit, and 11 is that photodetector two, 12 is computer processing system.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.

A kind of velocity of shot measurement mechanism provided by the utility model comprises bullet flow in pipes 3, diagnoses chamber 1, diagnoses chamber 26, light source 1, light source 25 and optical receiver 1, optical receiver 28, photodetector 1, photodetector 2 11, velocity of shot measuring unit 10, computer processing system 12.

Diagnosis chamber 1 is communicated with by stainless steel pipes with diagnosing chamber 26; Bullet flow in pipes 3 is successively from diagnosing chamber 1 and diagnosing chamber 26 and pass.One side in diagnosis chamber 1 is provided with light source 1, diagnoses the opposite side in chamber 1 to be provided with optical receiver 1.One side in diagnosis chamber 26 is provided with light source 25, diagnoses the opposite side in chamber 26 to be provided with optical receiver 28.Light source 1 and light source 25 are arranged on bullet 2 flight must be through the vertical direction of track, the installation site of optical receiver 1, optical receiver 28 respectively with light source 1 corresponding to light source (1,5), the opposite side of light source 25.

The output terminal of optical receiver 1 is connected by cable with the input end of photodetector 1; The output terminal of optical receiver 28 is connected by cable with the input end of photodetector 2 11; Photodetector 1 is connected 11 output terminal and is connected by cable with an input end of velocity of shot measuring unit 10 separately with photodetector; The output terminal of velocity of shot measuring unit 10 is connected by cable with the input port of computer processing system 12.

Diagnose chamber 1 and diagnose chamber 26 all to require to have good sealing, be damaged with the vacuum tightness of avoiding bullet flow in pipes 3.

After computer processing system 12 gathers the output signal of velocity of shot measuring unit 10, velocity of shot is calculated, shows and save data.

The size of bullet 2 is hydrogen or deuterium balls of a millimeter magnitude (1.3 millimeters of diameters, length 1.3-1.7 is adjustable); The velocity range of bullet 2 is: 150m/s-1000m/s.

Diagnose chamber 1 and diagnose chamber 26 all to require to have good sealing, be damaged with the vacuum tightness of avoiding the bullet flow in pipes.

It is 650nm that light source 1, light source 25 are wavelength, and beam diameter is the light emitting diode of 0.6-1mm, and the color of light is ruddiness.

When the light beam that is arranged on diagnosis chamber (4,6) was passed in bullet 2 flights successively, due to shading, the light intensity that causes optical receiver (7,8) to receive changed, and measures the light signal of this variation, just can determine that bullet 2 leaps the moment of light beam.Diagnose chamber (4 owing to being arranged on respectively two, determining apart from s between the light beam 6), the distance between light source 1, light source 25 very, so, as long as measure the time t that bullet 2 leaps two light beams, just can calculate the flying speed of bullet 2 by formula v=s/t.

The above has done detailed description to the utility model in conjunction with the accompanying drawings and embodiments, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skills possess, can also make various variations under the prerequisite that does not break away from the utility model aim.The content that is not described in detail in the utility model all can adopt prior art.

Claims

1. a velocity of shot measurement mechanism, is characterized in that: comprise bullet flow in pipes (3), diagnose chamber one (4), diagnose chamber two (6), light source one (1), light source two (5), optical receiver one (7), optical receiver two (8), photodetector one (9), photodetector two (11), velocity of shot measuring unit (10), computer processing system (12);

Described diagnosis chamber one (4) is communicated with diagnosing chamber two (6); Bullet flow in pipes (3) runs through successively diagnosis chamber one (4) and diagnoses chamber two (6); One side in diagnosis chamber one (4) is provided with light source one (1), diagnoses the opposite side in chamber one (4) to be provided with optical receiver one (7); One side in diagnosis chamber two (6) is provided with light source two (5), diagnoses the opposite side in chamber two (6) to be provided with optical receiver two (8);

Optical receiver one (7) is connected with photodetector one (9); Optical receiver two (8) is connected with photodetector two (11); Photodetector one (9) is connected the output terminal of (11) and all is connected with velocity of shot measuring unit (10) with photodetector; Velocity of shot measuring unit (10) is connected with computer processing system (12).

2. velocity of shot measurement mechanism according to claim 1, it is characterized in that: it is that 650nm, beam diameter are the light emitting diode of 0.6-1mm that described light source one (1), light source two (5) are wavelength.