CN211536248U - BNCT liquid lithium target device - Google Patents
BNCT liquid lithium target device Download PDFInfo
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- CN211536248U CN211536248U CN201922254176.0U CN201922254176U CN211536248U CN 211536248 U CN211536248 U CN 211536248U CN 201922254176 U CN201922254176 U CN 201922254176U CN 211536248 U CN211536248 U CN 211536248U
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Abstract
A BNCT liquid lithium target device comprises a vacuum pump, a lithium tank, a filtering tank, a cooling mechanism, an electromagnetic pump, a flowmeter, a pressure gauge, a valve and a target chamber; the outer layer of the lithium tank body is provided with an electric heating wire, the upper end of the lithium tank body is provided with a vacuum pump joint, the filtering tank is arranged in the lower end of the lithium tank body, and a plurality of filter screens are arranged in the filtering tank; the cooling pipe is arranged at the upper side in the lithium tank body; the vacuum pump joint is connected with a vacuum pump; the lithium tank body is connected with the electromagnetic pump; the electromagnetic pump is connected with the flowmeter, the flowmeter is connected with the valve, and the pressure gauge is arranged on one side of a pipeline at the liquid outlet end of the flowmeter; the target chamber comprises an outer shell, a proton beam inlet pipe, a neutron outlet pipe and lithium target equipment, wherein one side of the proton beam inlet pipe is arranged on one side of the outer shell, and a neutron outlet is formed in the other side of the outer shell; the upper end of the outer shell is provided with a light beam diagnosis tube; the upper end of the proton beam inlet pipe is provided with a cold trap pipe, and the other side of the proton beam inlet pipe is connected with a proton accelerator; the lower end of the cold trap pipe is provided with a plurality of baffle plates, and the lithium target equipment is arranged in the outer shell. This is novel, has guaranteed BNCT treatment cancer effect.
Description
Technical Field
The utility model relates to a cancer treatment auxiliary assembly field, especially a BNCT liquid lithium target device.
Background
BNCT (boron neutron capture therapy) is a therapeutic technique for destroying cancer cells by nuclear reactions within the tumor cells. The basic principle is to inject a boron compound having a strong affinity with cancer cells into a patient. The compound is only rapidly gathered in cancer cells after entering a human body, and then the compound is irradiated by thermal neutron rays which do not damage the human body greatly, but the thermal neutron rays and boron entering the cancer cells can generate strong nuclear reaction to release rays with strong lethality; because the range of the ray is very short and is only the length of one cancer cell, only the cancer cell is killed in the process, the surrounding tissues of the human body are not damaged, and the better cancer treatment effect can be achieved.
In order to minimize the exposure time of human body during treatment, BNCT requires that the thermal neutron flux be greater than 1 × 1013m－2s－1(ii) a Only neutrons produced by fission reactors currently meet this flux density requirement, but due to their structural and application safety considerations, reactors cannot be built in large hospitals located in densely populated areas. In order to solve the problem, the U.S. Lorentz national laboratory develops a thermal neutron flux which is generated by bombarding a lithium target by using energy obtained by a proton accelerator and a proton beam with the flow intensity of 20mA at 2.1-2.6 MeV, meets the BNCT requirement, has the whole treatment time of about 40 minutes and has the tumor dose of 21Gy-Eq (photon equivalent absorption dose) at the depth of 8 cm and can achieve better treatment effect; more importantly, the main advantages of using a proton accelerator to generate neutrons are that the accompanying radiation is less polluted, the cost is low, the volume is small, and the device can be installed in hospitals for use. In practice, using BNCT based proton accelerators, the target that produces neutrons is one of two key technology points, in addition to the accelerator that produces the high energy ion beam. At present, BNCT based on a proton accelerator uses a fixed lithium target, the fixed lithium target has poor heat conduction in practical application, is easy to generate heat load deposition, causes slow temperature rise speed of equipment, and has limited bearing capacity for impact effect caused by high-energy pulse generated by the proton accelerator, so that the fixed lithium target can be used for solving the problems of poor heat conduction, high temperature rise speed and low impact resistanceHas certain influence on the treatment of cancer by BNCT based on a proton accelerator.
Disclosure of Invention
In order to overcome current BNCT based on proton accelerator, because of adopting fixed lithium target, in the practical application, fixed lithium target heat-conduction is not good, produce the heat load deposit easily, lead to equipment temperature rising speed slow, the impact effect that the high energy pulse that produces the proton accelerator arouses bearing capacity is limited, can bring the drawback of influence to the treatment cancer, the utility model provides a under each parts combined action, can circulate and produce the liquid lithium target that flows, liquid lithium melting point is low, the boiling point is high for BNCT based on proton accelerator can select operating temperature and pressure lower, can more eliminate the temperature that the heat load deposit leads to and rise fast, and can bear the impact effect that the proton accelerator produced the high energy pulse and arouse, guaranteed a BNCT liquid lithium target device based on proton accelerator's BNCT treatment cancer effect from this.
The utility model provides a technical scheme that its technical problem adopted is:
a BNCT liquid lithium target device comprises a vacuum pump, a lithium tank, a filtering tank, a cooling mechanism, an electromagnetic pump, a flowmeter, a pressure gauge, a valve and a target chamber; the lithium ion battery is characterized in that an electric heating wire is fixedly arranged on the outer layer of the lithium tank body in a surrounding manner, a vacuum pump joint is arranged on one side of the upper end of the lithium tank body, a filter tank is fixedly arranged in the lower end of the lithium tank body, filter holes are distributed in the bottom of the filter tank at intervals, a plurality of filter screens are fixedly arranged in the filter tank at intervals from top to bottom, and the filter holes of the plurality of filter screens become smaller gradually from top to bottom; the annular cooling pipe of the cooling mechanism is fixedly arranged at the inner upper side of the lithium tank body, a liquid inlet of the cooling pipe of the cooling mechanism is fixedly connected with a liquid outlet pipe of the cooling mechanism, and a liquid outlet of the cooling pipe is fixedly connected with a liquid inlet pipe of the cooling mechanism; the vacuum pump joint is fixedly connected with the air inlet end of the vacuum pump; the liquid outlet pipe of the lithium tank body is fixedly connected with the liquid inlet pipe of the electromagnetic pump; the liquid outlet pipe of the electromagnetic pump is fixedly connected with the liquid inlet end of the flowmeter, the liquid outlet end of the flowmeter is fixedly connected with the liquid inlet end of the valve, and the liquid inlet pipe of the pressure gauge is arranged on one side of the liquid outlet end pipeline of the flowmeter; the target chamber comprises an outer shell, a proton beam inlet tube, a neutron outlet tube and lithium target equipment, wherein one side of the proton beam inlet tube is fixedly arranged on one side of the outer shell, and a neutron outlet is formed in the other side of the outer shell; the upper end of the outer shell is provided with a light beam diagnosis tube, an optical fiber camera is arranged in the light beam diagnosis tube, and the optical fiber camera is connected with the display equipment through an optical fiber line; the upper end of the proton beam inlet pipe is provided with a cold trap pipe, and the other side of the proton beam inlet pipe is fixedly connected with an outlet of the proton accelerator; the lower end of the cold trap tube is provided with a plurality of separation blades at intervals, and the outer diameter of each separation blade is smaller than the inner diameter of the proton beam inlet tube; the lithium target device is mounted within an outer housing.
Furthermore, the lithium target device is an arc-shaped flow surface, one end of the lithium target device is of an open structure, a liquid inlet target pipe is arranged at the upper end of the lithium target device, the inner diameter of the lower portion of the liquid inlet target pipe is narrower than the inner diameter of the upper portion of the liquid inlet target pipe, the liquid inlet target pipe inclines for a certain angle and faces to the inner side end of the lithium target device, a liquid outlet target pipe is arranged at the lower end of the outer shell of the target chamber, the upper end of the liquid outlet target pipe and the lower end of the lithium target device are staggered, a certain height is formed in the lower end of the outer shell, the upper end of the liquid inlet target pipe, the lower end of the liquid.
Furthermore, one section of the upper end of the liquid inlet pipe of the filtering tank body is positioned in the middle of the inner part of the annular cooling pipe and is tightly attached to the inner side end of the annular cooling pipe.
Further, the upper part and the lower part of the lithium tank body are of closed structures.
Furthermore, an observation tube is fixedly arranged in the middle of the lower end of the other side of the target chamber outer shell.
Furthermore, the outer sides of the pipeline and the pipeline joint connected with the lithium tank body, the electromagnetic pump, the cooling mechanism, the flowmeter, the pressure gauge, the valve and the target chamber are all wrapped with a layer of heat insulating material.
The utility model has the advantages that: the utility model discloses deposit a quantitative metallic lithium in the lithium jar, electric heating wire heating is with its melting back, carries liquid lithium to the target chamber through the electromagnetic pump, forms liquid lithium surface of flowing at the target chamber, utilizes the proton beam bombardment that the accelerator obtained liquid lithium surface of flowing, produces the neutron. Then the neutrons and boron compounds gathered in the cancer cells generate nuclear reaction to destroy the cancer cells. The utility model discloses can circulate and produce the liquid lithium target that flows, liquid lithium melting point is low, the boiling point is high for the optional operating temperature of BNCT based on proton accelerator and pressure are lower, more can eliminate the temperature that the heat load deposit leads to and rise fast, and can bear the impact effect that proton accelerator produced high energy pulse and arouse, guaranteed from this that BNCT based on proton accelerator treats cancer effect. Based on the foregoing, the utility model discloses good application prospect has.
Drawings
The invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in FIG. 1, a BNCT liquid lithium target device comprises a vacuum pump (model CFB-1200K), a lithium tank 1, a filtering tank 2, a cooling mechanism 3, a high-temperature liquid metal electromagnetic pump 4, a high-temperature flowmeter 5 (model F03-25), a high-temperature pressure gauge 6 (model DEC-308 DIIIIER), a high-temperature valve 7 and a target chamber 8; the outer layer of the lithium tank body 1 is fixedly provided with an electric heating wire 9 (with power of 2.5Kw) in a surrounding manner, the right side of the upper end of the lithium tank body 1 is welded with a vacuum pump joint 11, the filter tank 2 is fixedly arranged in the lower end of the lithium tank body 1, the lower end and the periphery of the filter tank are spaced from the inner lower end and the periphery of the lithium tank body 1 at a certain distance, a plurality of filter holes with the diameter of 1mm are distributed at the bottom of the filter tank 2 at a certain distance so as to facilitate the flow of filtered lithium liquid, filter screens 21 are stacked in the filter tank 2 from top to bottom, the filter holes of the filter screens 21 are gradually reduced from top to bottom, the filter holes at the top are 50 meshes (30 meshes, staggered), the filter holes at the middle are 80 meshes (20 meshes; the annular cooling pipe 3 of the cooling mechanism is fixedly arranged at the inner upper side of the lithium tank body 1, a liquid inlet of the cooling pipe 3 of the cooling mechanism is fixedly connected with a liquid outlet pipe of the cooling mechanism through a pipeline and a pipeline joint, and a liquid outlet of the cooling pipe 3 is fixedly connected with a liquid inlet pipe of the cooling mechanism through a pipeline and a pipeline joint; the upper end of the liquid inlet and the lower end of the liquid outlet of the cooling pipe 3 are respectively positioned at the upper outer part of the left end and the lower outer part of the right end of the lithium tank body 1, the upper end of a vacuum pump joint 11 is positioned at the upper outer part of the right end of the lithium tank body 1, and the vacuum pump joint 11 is fixedly connected with the air inlet end of a vacuum pump through a pipeline and a pipeline joint; the liquid outlet pipe at the left middle part of the lithium tank body 1 is fixedly connected with the liquid inlet pipe of the electromagnetic pump 4 through a pipeline and a pipeline joint; the liquid outlet pipe of the electromagnetic pump 4 is fixedly connected with the liquid inlet end of the flowmeter 5 through a pipeline and a pipeline joint, the liquid outlet end of the flowmeter 5 is fixedly connected with the liquid inlet end of the valve 7 through a pipeline and a pipeline joint, the liquid inlet pipe of the pressure gauge 6 is arranged on the right side of the liquid outlet pipe of the flowmeter 5, and the liquid inlet pipe of the pressure gauge 6 is communicated with the inner space of the liquid outlet pipe of the flowmeter 5; the target chamber 8 comprises an outer shell 81 with an upper cover, a proton beam inlet pipe 82, a neutron outlet pipe 83 and liquid lithium target equipment 84, wherein the left end of the proton beam inlet pipe 82 is welded in the middle of the right end of the outer shell 81 and is communicated with the inner space of the outer shell 81, and an opening is formed in the middle of the left end of the outer shell and serves as a neutron outlet 83; a light beam diagnosis tube 89 is welded in the middle of the upper end of the upper cover of the outer shell 81, an optical fiber camera (with a high temperature resistance function) is arranged at the inner upper end of the light beam diagnosis tube 89, and the optical fiber camera is connected with a display device through an optical fiber line; the upper end of the right part of the proton beam inlet pipe 82 is welded with a cold trap pipe 85 communicated with the inner space of the cold trap pipe, and the right side end of the proton beam inlet pipe 82 is connected with the outlet of the proton accelerator through a pipeline and a pipeline joint; a plurality of baffle plates 86 are welded at the inner position of the proton beam inlet pipe 82 at the lower end of the cold trap pipe 85 at intervals, and the outer diameter of each baffle plate 86 is 3mm smaller than the inner diameter of the proton beam inlet pipe 82; the liquid lithium target device 84 is mounted within the outer casing 81.
As shown in fig. 1, the liquid lithium target device 84 is an arc-shaped flow surface, the right end is an open structure, the middle part of the upper end of the liquid lithium target device is welded with a liquid inlet target pipe 84-1 communicated with the liquid lithium target device, the inner diameter of the lower part of the liquid inlet target pipe 84-1 is narrower than that of the upper part and inclines for a certain angle towards the right inner side end of the lithium target device 84, the middle part of the lower end of the outer shell of the target chamber is welded with a liquid outlet target pipe 84-2 (staggered with the lower end of the lithium target device 84 and 5mm in the lower end of the outer shell 81), after the liquid lithium target device 84 is installed in the outer shell 81, the upper end of the liquid inlet target pipe 84-1, the lower end of the liquid outlet target pipe 84-2, the right side of the liquid outlet end of the valve 7 and the upper end of the liquid inlet pipe in the middle part of the filter tank, the outer shell 81 is provided with a heat insulation layer at the lower outer side end of the electric heating wire 84-3. One section of the upper end of the upper middle liquid inlet pipe of the filtering tank body (of an upper and lower closed structure) 2 is positioned in the inner middle of the annular cooling pipe 3 and is tightly attached to the inner side end of the annular cooling pipe 3. The upper part and the lower part of the lithium tank body 1 are closed structures. An observation tube 87 communicated with the inner space of the outer shell is welded in the middle of the lower end of the right side of the outer shell of the target chamber 8, the observation tube 87 is in an inclined state, the left end of the observation tube is high, the right end of the observation tube 87 is low, and a high-temperature-resistant round toughened glass plate is fixedly arranged on the right side of the observation tube 87. The outer sides of the pipeline and the pipeline joint connected with the lithium tank body 1, the electromagnetic pump 4, the cooling mechanism 3, the flowmeter 5, the pressure gauge 6, the valve 7 and the target chamber 8 are all wrapped with a layer of heat insulation material.
As shown in fig. 1, the utility model stores a certain amount of metal lithium in the lithium tank 1, and the electric heating wire 9 surrounding the lithium tank 1 generates heat to heat and melt the solid metal lithium after being electrified (the electric heating wire 9 is matched with a temperature control device, and the heating is stopped when the temperature is about 250 ℃, so as to ensure that the solid metal lithium is heated and changed into liquid state at constant temperature); the vacuum pump works all the time when being electrified, negative pressure suction is generated after the work to pump out the air in the lithium tank body 1, and the metal lithium is ensured not to be polluted by oxygen, nitrogen and the like. After the electromagnetic pump 4 works by electricity, liquid lithium is pumped out after being heated and melted in the lithium tank body 1 and is input into the liquid lithium target equipment 84 through the flowmeter 5, the valve 7 with the opened valve core and the liquid inlet target pipe 84-1, because the pressure of the liquid lithium flowing into the liquid inlet target pipe 84-1 after the inner diameter of the lower part of the liquid inlet target pipe is narrower than the inner diameter of the upper part of the liquid inlet target pipe 84-1 is increased and the lower part of the liquid inlet target pipe 84-1 inclines for a certain angle towards the right inner side end of the lithium target equipment 8, under the action of the pressure, the liquid lithium is sprayed onto the arc flow curved surface on the inner side end of the lithium target equipment 84 and is evenly spread, the liquid lithium forms a liquid lithium flow surface on the inner side end of the liquid lithium target equipment 84, a proton beam output by the proton accelerator enters the shell body 81 through the proton beam inlet pipe 82 to act on the liquid lithium flow surface, required neutrons are generated, are output through the neutron, the cancer cells are destroyed by the nuclear reaction of neutrons with boron compounds that accumulate within the cancer cells. Before the boron neutron capture treatment equipment is used for treatment, the basic principle is that a boron compound with strong affinity with cancer cells is injected into a patient, the boron compound is only rapidly gathered in the cancer cells after entering a human body, and then the boron compound is irradiated by thermal neutron rays, the rays do not damage the human body greatly, neutrons and the boron entering the cancer cells can generate strong nuclear reaction, rays with strong lethality are released, the range of the rays is very short, and the rays only have the length of one cancer cell, so that the cancer cells are only killed, surrounding tissues are not damaged, and a good treatment effect can be achieved. In the working process of the utility model, the baffle 86 at the lower end of the cold trap tube 85 can block the liquid lithium vapor in the outer shell 81 of the target chamber 8 (the baffle can not block the proton beam from entering the outer shell 81 through the proton beam inlet tube 82), so that the lithium vapor can be effectively prevented from diffusing to the proton beam inlet 82; the proton beam is ensured to effectively enter the outer shell 81 of the lithium target chamber 8; lithium vapor is discharged from the upper end of the cold trap pipe 85 and introduced into the waste lithium vapor treatment device through a pipeline for treatment. In the process, the flow of the liquid lithium can be regulated by regulating the valve 7, the flow can be monitored by the flowmeter 5, and the pressure of the liquid lithium in the pipeline is detected by the pressure gauge 6; through the video signal of optical fiber camera output to display device of upper end in the light beam diagnosis pipe 89, the condition in the shell body 81 of operating personnel accessible display device's screen real-time observation lithium target room to can also observe the condition in the shell body 81 of lithium target room through the visual observation pipe 87. The utility model discloses in, liquid lithium can get into the lithium jar body 1 after 8 flows out of lithium target chamber and be heated by electric heating wire 9 once more, take out through electromagnetic pump 4 and flow into lithium target chamber 8 once more in, by proton beam effect generation required thermoneutron, reach the cycle work purpose, until closing all consumer switches, the utility model discloses just stop work. The utility model discloses in, liquid lithium gets into the lithium jar body 1 internal preceding high temperature (about 350 ℃, proton beam enters the pipe 82 through proton beam and acts on liquid lithium surface of flowing in getting into the shell body 81, generate required neutron and can lead to liquid lithium temperature to rise simultaneously), because the effect of high temperature, it can the metal surface phenomenon of coming off to produce impurity to be difficult to avoid in the follow liquid lithium target equipment 84, consequently need to separate out the liquid lithium impurity of outflow and deposit the back and then get into the lithium jar body 1 in, prevent that follow-up impurity from getting into in the liquid lithium target equipment 84 through the effect of electromagnetic pump 4, to proton accelerator work output proton beam, it acts on liquid lithium surface of flowing in getting into the shell body 81 through proton beam 82, generate required neutron and cause certain influence. Because the liquid outlet target pipe 84-2 close to the front in the middle of the lower end of the outer shell 81 and the lower end of the lithium target device 84 are staggered, and the liquid outlet target pipe 84-2 has a height of 5mm in the lower end of the outer shell 81, liquid lithium can fall on the lower part of the inner shell 81 after entering the liquid lithium target device 84, and can be higher than the upper end of the liquid outlet target pipe 84-2 after the depth of the liquid lithium reaches a certain depth (5 mm), and then enters the lithium tank body 1 to be reheated; in the process, impurities are precipitated at the lower part in the outer shell 81, and lithium liquid after the impurities are precipitated enters the lithium tank body 1; because the electric heating wire 84-3 at the lower end outside the outer shell body is in an electric heating state during working, the lithium which is precipitated and cooled into solid at the lower end inside the outer shell body is heated into liquid after being used last time, and the liquidity of the liquid lithium is ensured (the electric heating wire 84-3 is provided with a temperature control device, stops heating after the temperature reaches about 200 ℃, and can open the upper cover of the outer shell body 81 after being used for a long time, and the solid lithium containing impurities is taken out and put into the solid lithium containing no impurities in an equivalent amount). Because the temperature of the liquid lithium entering the lithium tank 1 from the target chamber is about 350 ℃, the liquid lithium with too high temperature directly enters the lithium tank 1 to cause the pressure in the lithium tank 1 to be too high, which causes the hidden trouble of damage, and the liquid state of the lithium changes due to too high temperature, the liquid lithium before entering the lithium tank 1 needs to be cooled; because the upper end of the middle liquid inlet pipe on the filtering tank body 2 is positioned in the middle of the annular cooling pipe 3 and is tightly attached to the inner side end of the annular cooling pipe 3, the cooling mechanism can continuously flow refrigerating liquid in the cooling pipe when in work, and the liquid lithium before flowing into the lithium tank body 1 through the lower end of the liquid outlet target pipe 84-2 and the middle liquid inlet pipe on the filtering tank body 2 can be quickly cooled to about 200 ℃, thereby not only preventing the adverse effect caused by overhigh temperature, but also fully utilizing the heat energy generated by the proton beam action of the liquid lithium. The utility model discloses in, get into the liquid lithium that filters in the jar body 2 and can filter the back earlier through five layers of filter screens 21 in the jar body 2, flow out from the 2 lower extremes of the jar body of filtering again and get into the lithium jar body 1 in, then take out once more through electromagnetic pump 4, reach good filter effect. The utility model discloses can circulate and produce liquid mobile lithium target, liquid lithium melting point is low, the boiling point is high for the optional operating temperature of BNCT based on proton accelerator and pressure are lower, more can eliminate the temperature that the heat load deposit leads to and rise fast, and can bear the proton accelerator and produce the impulse effect that high energy pulse arouses, guaranteed the BNCT based on proton accelerator treatment cancer effect from this.
The basic principles and essential features of the invention and the advantages of the invention have been shown and described above, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but rather can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A BNCT liquid lithium target device comprises a vacuum pump, a lithium tank, a filtering tank, a cooling mechanism, an electromagnetic pump, a flowmeter, a pressure gauge, a valve and a target chamber; the lithium ion battery is characterized in that an electric heating wire is fixedly arranged on the outer layer of the lithium tank body in a surrounding manner, a vacuum pump joint is arranged on one side of the upper end of the lithium tank body, a filter tank is fixedly arranged in the lower end of the lithium tank body, filter holes are distributed in the bottom of the filter tank at intervals, a plurality of filter screens are fixedly arranged in the filter tank at intervals from top to bottom, and the filter holes of the plurality of filter screens become smaller gradually from top to bottom; the annular cooling pipe of the cooling mechanism is fixedly arranged at the inner upper side of the lithium tank body, a liquid inlet of the cooling pipe of the cooling mechanism is fixedly connected with a liquid outlet pipe of the cooling mechanism, and a liquid outlet of the cooling pipe is fixedly connected with a liquid inlet pipe of the cooling mechanism; the vacuum pump joint is fixedly connected with the air inlet end of the vacuum pump; the liquid outlet pipe of the lithium tank body is fixedly connected with the liquid inlet pipe of the electromagnetic pump; the liquid outlet pipe of the electromagnetic pump is fixedly connected with the liquid inlet end of the flowmeter, the liquid outlet end of the flowmeter is fixedly connected with the liquid inlet end of the valve, and the liquid inlet pipe of the pressure gauge is arranged on one side of the liquid outlet end pipeline of the flowmeter; the target chamber comprises an outer shell, a proton beam inlet tube, a neutron outlet tube and lithium target equipment, wherein one side of the proton beam inlet tube is fixedly arranged on one side of the outer shell, and a neutron outlet is formed in the other side of the outer shell; the upper end of the outer shell is provided with a light beam diagnosis tube, an optical fiber camera is arranged in the light beam diagnosis tube, and the optical fiber camera is connected with the display equipment through an optical fiber line; the upper end of the proton beam inlet pipe is provided with a cold trap pipe, and the other side of the proton beam inlet pipe is fixedly connected with an outlet of the proton accelerator; the lower end of the cold trap tube is provided with a plurality of separation blades at intervals, and the outer diameter of each separation blade is smaller than the inner diameter of the proton beam inlet tube; the lithium target device is mounted within an outer housing.
2. The BNCT liquid lithium target device according to claim 1, wherein the lithium target device is an arc-shaped flow surface, one end of the lithium target device is an open structure, the upper end of the lithium target device is provided with a liquid inlet target tube, the inner diameter of the lower part of the liquid inlet target tube is narrower than the inner diameter of the upper part of the liquid inlet target tube and is inclined at a certain angle towards the inner side end of the lithium target device, the lower end of the outer shell of the target chamber is provided with a liquid outlet target tube, the upper end of the liquid outlet target tube is staggered with the lower end of the lithium target device, the lower end of the liquid outlet target tube is provided with a certain height in the lower end of the outer shell, the upper end of the liquid inlet target tube, the lower end of the liquid.
3. The BNCT liquid lithium target device according to claim 1, wherein a section of the upper end of the liquid inlet pipe of the filter tank is located at the inner middle part of the annular cooling pipe and is tightly attached to the inner end of the annular cooling pipe.
4. The BNCT liquid lithium target device according to claim 1, wherein the upper and lower portions of the lithium tank are closed structures.
5. The BNCT liquid lithium target device according to claim 1, wherein an observation tube is fixedly installed at the middle part of the lower end of the other side of the outer shell of the target chamber.
6. The BNCT liquid lithium target device according to claim 1, wherein the pipes and pipe joints connecting the lithium tank, the electromagnetic pump, the cooling mechanism, the flow meter, the pressure gauge, the valve and the target chamber are coated with a layer of heat insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922254176.0U CN211536248U (en) | 2019-12-16 | 2019-12-16 | BNCT liquid lithium target device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922254176.0U CN211536248U (en) | 2019-12-16 | 2019-12-16 | BNCT liquid lithium target device |
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| CN211536248U true CN211536248U (en) | 2020-09-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110812719A (en) * | 2019-12-16 | 2020-02-21 | 成都达信成科技有限公司 | BNCT liquid lithium target device |
| CN114225232A (en) * | 2021-09-26 | 2022-03-25 | 散裂中子源科学中心 | Beam shaping body with rotary target body |
| CN114272521A (en) * | 2021-12-07 | 2022-04-05 | 中国科学院上海应用物理研究所 | Liquid lithium target system and forming method of flowing liquid lithium target |
| CN114272521B (en) * | 2021-12-07 | 2024-05-10 | 中国科学院上海应用物理研究所 | Liquid lithium target system and method for forming flowing liquid lithium target |
-
2019
- 2019-12-16 CN CN201922254176.0U patent/CN211536248U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110812719A (en) * | 2019-12-16 | 2020-02-21 | 成都达信成科技有限公司 | BNCT liquid lithium target device |
| CN114225232A (en) * | 2021-09-26 | 2022-03-25 | 散裂中子源科学中心 | Beam shaping body with rotary target body |
| CN114272521A (en) * | 2021-12-07 | 2022-04-05 | 中国科学院上海应用物理研究所 | Liquid lithium target system and forming method of flowing liquid lithium target |
| CN114272521B (en) * | 2021-12-07 | 2024-05-10 | 中国科学院上海应用物理研究所 | Liquid lithium target system and method for forming flowing liquid lithium target |
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