Normal-temperature spherical solid pellet injection device

Abstract

The invention provides a normal-temperature spherical solid projectile injection device which comprises a motor, a stirrer, a discharging chamber, a discharging chamber outlet pipeline, a push-pull electromagnet, a push rod sleeve, a push rod, a high-pressure air source, a quick valve, a launching gun barrel, a differential cavity, a vacuum air exhaust system, a projectile receiving pipeline, a stop valve and a target chamber. The projectiles in the discharging chamber fall down along the discharging chamber outlet pipeline under the action of the stirrer, the discharging chamber outlet pipeline is connected with the push rod sleeve, the projectiles entering the push rod sleeve are pushed into the launching gun barrel by the push rod under the action of the push-pull electromagnet, the high-pressure gas source is connected with the launching gun barrel through the quick valve, the projectiles are accelerated through high-pressure gas, and the projectiles are launched. The other end of the launching gun barrel is communicated with the differential cavity, a projectile receiving pipeline is installed at the end, right opposite to the launching gun barrel, of the differential cavity, and projectiles flying out of the projectile receiving pipeline pass through the stop valve and then reach the target chamber. The continuous injection device can realize continuous injection of the spherical solid projectile and is used for continuous injection of the solid projectile in a nuclear fusion device.

Description

Technical Field

[0001] The invention relates to the field of nuclear fusion projectile injection, and in particular to a room-temperature spherical solid projectile injection device. Background Art

[0002] When a tokamak fusion reactor is in operation, the plasma boundary is often accompanied by boundary localized modes (ELMs). ELMs will discharge strong heat loads in a very short time and damage the internal components of the fusion device. Therefore, certain measures must be taken to alleviate the transient heat load caused by ELMs. It has been found that continuous high-frequency small-size solid projectile injection is an effective ELM control method. It can trigger high-frequency small-amplitude ELMs, thereby reducing the amplitude of spontaneous ELMs and playing a role in alleviating ELMs. Therefore, conducting injection experiments of solid impurity projectiles at room temperature is of great significance for the operation of future fusion reactors. In addition to controlling ELMs, solid impurity projectile injection can also be used to study the transport behavior of impurity particles in tokamaks and provide support for the control of impurities in high-temperature plasmas. Therefore, the development of impurity projectile injection technology is of great significance for the operation of future fusion reactors. Summary of the invention

[0003] In order to realize the injection of room temperature solid projectiles, the present invention proposes a room temperature solid spherical projectile injection device, and the technical solution adopted by the present invention is: A room temperature spherical solid projectile injection device comprises a motor, a stirrer, a discharge chamber, a discharge chamber outlet pipe, a push-pull electromagnet, a push rod sleeve, a push rod, a high-pressure gas source, a quick valve, a launch gun barrel, a differential chamber, a vacuum pumping system, a projectile receiving pipe, a stop valve, and a target chamber; a stirrer is installed on the discharge chamber, and the projectile in the discharge chamber falls along the discharge chamber outlet pipe under the action of the stirrer; the discharge chamber outlet pipe is connected to the push rod sleeve, and the projectile entering the push rod sleeve is pushed into the launch gun barrel by the push rod under the action of the push-pull electromagnet; the high-pressure gas source is connected to the launch gun barrel through the quick valve; when the quick valve is opened, the high-pressure gas accelerates the projectile, thereby launching the projectile; the other end of the launch gun barrel is connected to the differential chamber; the end of the differential chamber directly facing the launch gun barrel is equipped with a projectile receiving pipe; the projectile flying out of the projectile receiving pipe reaches the target chamber after passing through the stop valve; the differential chamber is also connected to the vacuum pumping system to realize the rapid discharge of gas.

[0004] The present invention has the following beneficial effects: The invention can realize the continuous injection of spherical solid projectiles, is suitable for the continuous injection of room-temperature solid projectiles in nuclear fusion devices, and the number of projectiles fired per second can reach 10. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 The invention discloses a room temperature spherical solid projectile injection device.

[0006] Among them: 1-discharging chamber, 2-projectile, 3-discharging chamber outlet pipe, 4-push-pull electromagnet, 5-push rod, 6-push rod sleeve, 7-motor, 8-agitator, 9-differential chamber, 10-high-pressure gas source, 11-fast valve, 12-launching barrel, 13-first vacuum valve, 14-rough vacuum pumping unit, 15-second vacuum valve, 16-high vacuum pumping unit, 17-projectile receiving pipeline, 18-stop valve, 19-target chamber. DETAILED DESCRIPTION

[0007] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other. To achieve the above-mentioned purpose, the present invention adopts the following technical scheme.

[0008] like Figure 1 As shown, a room temperature spherical solid projectile injection device includes a discharge chamber 1, a discharge chamber outlet pipe 3, a push-pull electromagnet 4, a push rod 5, a push rod sleeve 6, a motor 7, an agitator 8, a differential chamber 9, a high-pressure gas source 10, a fast valve 11, a launch gun barrel 12, a first vacuum valve 13, a rough vacuum pumping unit 14, a second vacuum valve 15, a high vacuum pumping unit 16, a projectile receiving pipe 17, a stop valve 18, and a target chamber 19. The projectile 2 is placed in the discharge chamber 1, and the agitator 8 is driven by the motor 7 to rotate to achieve stirring of the projectile 2. The discharge chamber 1 is located above the push rod sleeve 6 and is connected to the push rod sleeve 6. Under the action of the agitator 8, the projectile 2 relies on gravity to fall into the push rod sleeve 6 along the discharge chamber outlet pipe 3. The push rod sleeve 6 is horizontally and vertically connected to the launch barrel 12. The projectile 2 entering the push rod sleeve 6 is pushed into the launch barrel 12 by the push rod 5 under the action of the push-pull electromagnet 4, and then the fast valve 11 is opened to release the high-pressure gas in the high-pressure gas source 10, thereby accelerating the projectile 2. The projectile 2 passes through the launch barrel 12, the differential chamber 9, the projectile receiving pipe 17, the stop valve 18 in sequence, and finally enters the target chamber 19.

[0009] The discharge chamber 1 is provided with a discharge port for discharging the projectiles 2. After the discharging is completed, the discharge port is sealed by a sealing flange.

[0010] The discharge chamber 1 is connected to the discharge chamber outlet pipe 3 at the bottom, and the discharge chamber outlet pipe 3 is connected to the push rod sleeve 6. Under the action of the agitator 8, the projectile 2 relies on its own gravity to enter the push rod sleeve 6 along the discharge chamber outlet pipe 3, and then the push-pull electromagnet 4 drives the push rod 5 to push the projectile 2 into the launching barrel 12.

[0011] The inner diameter of the launching barrel 12 is variable. The inner diameter of the pipe from the discharge chamber outlet pipe 3 to the quick valve 11 is smaller than the diameter of the projectile, and the inner diameter of the pipe from the discharge chamber outlet pipe 3 to the differential chamber 9 is larger than the diameter of the projectile. The launching barrel 12 is slightly tilted upward to prevent the projectile 2 from moving back and forth after entering the launching barrel 12.

[0012] After the push rod 5 pushes the projectile 2 into the launch barrel 12, the quick valve 11 opens quickly, and the projectile 2 is launched under the action of the high-pressure gas. When the quick valve 11 opens, the push rod 5 is still in a position to block the discharge chamber outlet pipe 3, thereby preventing excessive gas from entering the discharge chamber 1.

[0013] The differential chamber 9 is used to separate the projectile 2 from the propelling gas. A partition is arranged inside the differential chamber 9, thereby dividing the entire cavity into two chambers. A small hole is opened on the partition for passing the projectile 2. The chamber close to the launching barrel 12 is connected to the rough vacuum pumping unit 14 and a first vacuum valve 13 is arranged between the two. The chamber close to the projectile receiving pipe 17 is connected to the high vacuum pumping unit 16 and a second vacuum valve 15 is arranged between the two, thereby finally realizing the separation of the projectile 2 from the propelling gas.

[0014] After the projectile 2 enters the firing barrel 12, the quick valve 11 opens to release the high-pressure gas in the high-pressure gas source 10, thereby accelerating the projectile 2. After passing through the differential chamber 9, the projectile 2 is received by the projectile receiving pipe 17, then the stop valve 18, and finally enters the target chamber 19.

Claims

1. A room temperature spherical solid projectile injection device, characterized in that: It includes a motor, a stirrer, a discharge chamber, a discharge chamber outlet pipe, a push-pull electromagnet, a push rod sleeve, a push rod, a high-pressure gas source, a quick valve, a launch gun barrel, a differential chamber, a vacuum pumping system, a projectile receiving pipe, a stop valve, and a target chamber; a stirrer is installed on the discharge chamber, and the motor drives the stirrer to rotate. The projectiles in the discharge chamber fall along the discharge chamber outlet pipe under the action of the stirrer, and the discharge chamber outlet pipe is connected to the push rod sleeve. The projectiles entering the push rod sleeve are pushed into the launch gun barrel by the push rod under the action of the push-pull electromagnet. The high-pressure gas source is connected to the launch gun barrel through the quick valve. When the quick valve is opened, the high-pressure gas accelerates the projectiles, thereby launching the projectiles. The other end of the launch gun barrel is connected to the differential chamber, and a projectile receiving pipe is installed at the end of the differential chamber opposite to the launch gun barrel. The projectiles flying out of the projectile receiving pipe reach the target chamber after passing through the stop valve. The differential chamber is also connected to the vacuum pumping system to achieve rapid discharge of gas.

2. A room temperature spherical solid projectile injection device as claimed in claim 1, characterized in that: The discharge chamber is connected to the discharge chamber outlet pipe at the bottom, and the discharge chamber outlet pipe is connected to the push rod sleeve. Under the action of the agitator, the projectile can enter the push rod sleeve along the discharge chamber outlet pipe by its own gravity, and then the push-pull electromagnet drives the push rod to push the projectile into the launch barrel.

3. A room temperature spherical solid projectile injection device as claimed in claim 1, characterized in that: The inner diameter of the firing barrel is variable. The inner diameter of the pipe from the discharge chamber outlet pipe to the quick valve is smaller than the diameter of the projectile, and the inner diameter of the pipe from the discharge chamber outlet pipe to the differential chamber is larger than the diameter of the projectile. The firing barrel is slightly tilted upward to prevent the projectile from moving back and forth after entering the firing barrel.

4. A room temperature spherical solid projectile injection device as claimed in claim 1, characterized in that: After the push rod pushes the projectile into the firing barrel, the quick valve opens quickly and the projectile is fired under the action of high-pressure gas. When the quick valve opens, the push rod is still in a position to block the outlet pipe of the discharge chamber, thereby preventing excessive gas from entering the discharge chamber.

5. A room temperature spherical solid projectile injection device as claimed in claim 1, characterized in that: The differential chamber is used to separate the projectile from the propellant gas. A partition is arranged inside the differential chamber, thereby dividing the entire cavity into two chambers. A small hole is opened on the partition for passing the projectile. The chamber close to the launching barrel is connected to the rough vacuum pumping unit and a first vacuum valve is arranged between the two. The chamber close to the projectile receiving pipe is connected to the high vacuum pumping unit and a second vacuum valve is arranged between the two, thereby finally realizing the separation of the projectile from the propellant gas.

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