Normal-temperature spherical solid projectile injection device

Abstract

The application 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 gas source, a quick valve, a launching gun barrel, a differential chamber, a vacuum air extraction system, a projectile receiving pipeline, a stop valve and a target chamber; the projectiles in the discharging chamber fall 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 by high-pressure gas and then launched, the other end of the launching gun barrel is communicated with the differential chamber, the differential chamber is provided with the projectile receiving pipeline at the end opposite to the launching gun barrel, and the projectiles flying out of the projectile receiving pipeline reach the target chamber after passing through the stop valve. The application can realize the continuous injection of spherical solid projectiles and is used for the continuous injection of solid projectiles in a nuclear fusion device.

Description

Technical Field

[0001] This invention relates to the field of nuclear fusion projectile injection, and more specifically to a room-temperature spherical solid projectile injection device. Background Technology

[0002] During operation, tokamak fusion reactors often experience boundary localized modes (ELMs) at the plasma boundary. ELMs release intense heat loads within a very short time, damaging internal components of the fusion device. Therefore, measures must be taken to mitigate the transient heat loads caused by ELMs. Continuous high-frequency, small-sized solid impurity pellet injection has been found to be an effective method for ELM control. It can trigger high-frequency, low-amplitude ELMs, thereby reducing the amplitude of spontaneous ELMs and mitigating their impact. Therefore, conducting room-temperature solid impurity pellet injection experiments is of great significance for the future operation of fusion reactors. Besides controlling ELMs, solid impurity pellet injection can also be used to study the transport behavior of impurity particles in tokamas, providing support for impurity control in high-temperature plasmas. Therefore, developing impurity pellet injection technology is of great importance for the future operation of fusion reactors. Summary of the Invention

[0003] To achieve the injection of solid projectiles at room temperature, this invention proposes a room temperature solid spherical projectile injection device. The technical solution adopted by this invention is as follows:

[0004] A room-temperature spherical solid projectile injection device 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 firing barrel, a differential chamber, a vacuum pumping system, a projectile receiving pipe, a shut-off valve, and a target chamber. The discharge chamber is equipped with a stirrer. Projectiles in the discharge chamber fall along the discharge chamber outlet pipe under the action of the stirrer. The discharge chamber outlet pipe is connected to the push rod sleeve. Projectiles entering the push rod sleeve are pushed into the firing barrel by the push rod under the action of the push-pull electromagnet. The high-pressure gas source is connected to the firing barrel through the quick valve. When the quick valve opens, the high-pressure gas accelerates the projectile, thus launching it. The other end of the firing barrel is connected to the differential chamber. A projectile receiving pipe is installed at the end of the differential chamber opposite the firing barrel. Projectiles flying out from the projectile receiving pipe pass through the shut-off valve and reach the target chamber. The differential chamber is also connected to the vacuum pumping system to achieve rapid gas discharge.

[0005] The present invention has the following beneficial effects:

[0006] This invention enables the continuous injection of spherical solid projectiles, and is suitable for the continuous injection of room-temperature solid projectiles in nuclear fusion devices, with a projectile firing rate of up to 10 per second. Attached Figure Description

[0007] Figure 1This invention relates to a room-temperature spherical solid pellet injection device.

[0008] The components are: 1-discharge chamber, 2-projectile, 3-discharge chamber outlet pipe, 4-push-pull electromagnet, 5-push rod, 6-push rod sleeve, 7-motor, 8-stirrer, 9-differential chamber, 10-high pressure gas source, 11-fast valve, 12-launching gun barrel, 13-first vacuum valve, 14-rough vacuum pumping unit, 15-second vacuum valve, 16-high vacuum pumping unit, 17-projectile receiving pipe, 18-stop valve, 19-target chamber. Detailed Implementation

[0009] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other. To achieve the above objectives, this invention adopts the following technical solution.

[0010] 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, a stirrer 8, a differential chamber 9, a high-pressure gas source 10, a fast valve 11, a firing 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 shut-off valve 18, and a target chamber 19. The projectile 2 is placed in the discharge chamber 1. The agitator 8 is driven by the motor 7 to rotate, thereby agitating 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 falls into the push rod sleeve 6 along the discharge chamber outlet pipe 3 by gravity. The push rod sleeve 6 is horizontally and vertically connected to the firing barrel 12. The projectile 2 entering the push rod sleeve 6 is pushed into the firing barrel 12 by the push rod 5 under the action of the push-pull electromagnet 4. Then the fast valve 11 opens to release the high-pressure gas in the high-pressure gas source 10, thereby accelerating the projectile 2. The projectile 2 passes through the firing barrel 12, the differential chamber 9, the projectile receiving pipe 17, and the shut-off valve 18 in sequence, and finally enters the target chamber 19.

[0011] The discharge chamber 1 has a discharge port for feeding the projectiles 2. After feeding, the chamber is sealed with a sealing flange.

[0012] The discharge chamber 1 is connected to the discharge chamber outlet pipe 3, which 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. Then, the push and pull electromagnet 4 drives the push rod 5 to push the projectile 2 into the firing barrel 12.

[0013] The inner diameter of the firing 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, while 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. Furthermore, the firing barrel 12 is slightly tilted upward to prevent the projectile 2 from moving back and forth after entering the firing barrel 12.

[0014] After push rod 5 pushes projectile 2 into firing barrel 12, quick valve 11 opens rapidly, and projectile 2 is launched under the action of high-pressure gas. Push rod 5 remains in a position that can block the discharge chamber outlet pipe 3 when quick valve 11 is open, thereby preventing excessive gas from entering discharge chamber 1.

[0015] The differential chamber 9 is used to separate the projectile 2 from the propellant gas. It is equipped with a partition, which divides the entire cavity into two chambers. The partition has small holes for the projectile 2 to pass through. The chamber near the firing barrel 12 is connected to the coarse vacuum pumping unit 14 and a first vacuum valve 13 is set between the two. The chamber near the projectile receiving pipe 17 is connected to the high vacuum pumping unit 16 and a second vacuum valve 15 is set between the two, thus achieving the separation of the projectile 2 from the propellant gas.

[0016] After the projectile 2 enters the firing barrel 12, the quick valve 11 opens, releasing 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 by the shut-off valve 18, and finally enters the target chamber 19.

Claims

1. A room-temperature spherical solid projectile injection device, characterized in that: The system includes a motor, a mixer, 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 firing barrel, a differential chamber, a vacuum pumping system, a projectile receiving pipe, a shut-off valve, and a target chamber. The discharge chamber is equipped with a mixer, driven by a motor. Projectiles in the discharge chamber fall along the discharge chamber outlet pipe under the action of the mixer. The discharge chamber outlet pipe is connected to the push rod sleeve. Projectiles entering the push rod sleeve are pushed into the firing barrel by the push rod under the action of the push-pull electromagnet. The high-pressure gas source is connected to the firing barrel through a quick valve. When the quick valve opens, the high-pressure gas accelerates the projectile, thus launching it. The other end of the firing barrel is connected to the differential chamber. A projectile receiving pipe is installed at the end of the differential chamber opposite the firing barrel. Projectiles flying out of the projectile receiving pipe pass through the shut-off valve and reach the target chamber. The differential chamber is also connected to the vacuum pumping system to achieve rapid gas discharge. The discharge chamber is connected to the discharge chamber outlet pipe, which 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. Then, the push-pull electromagnet drives the push rod to push the projectile into the firing barrel. 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, while the inner diameter of the pipe from the discharge chamber outlet pipe to the differential chamber is larger than the diameter of the projectile. In addition, the firing barrel is slightly tilted upward to prevent the projectile from moving back and forth after entering the firing barrel. The differential chamber is used to separate the projectile from the propellant gas. It is equipped with a partition, which divides the entire cavity into two chambers. The partition has small holes for the projectile to pass through. The chamber closer to the firing barrel is connected to the coarse vacuum pumping unit and a first vacuum valve is installed between the two. The chamber closer to the projectile receiving pipe is connected to the high vacuum pumping unit and a second vacuum valve is installed between the two. Finally, the separation of the projectile from the propellant gas is achieved.

2. The room-temperature spherical solid projectile injection device as described in claim 1, characterized in that: After the push rod pushes the projectile into the firing barrel, the quick-release valve opens rapidly, and the projectile is launched under the action of high-pressure gas. When the quick-release valve is open, the push rod is still in a position that can block the outlet pipe of the discharge chamber, thereby preventing too much gas from entering the discharge chamber.

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