阅读说明：本技术 一种医院中子照射器堆芯冷却装置 (Reactor core cooling device of neutron irradiator in hospital ) 是由 许文泽 刘彤 王嵩 于 2021-06-28 设计创作，主要内容包括：本发明公开了一种医院中子照射器堆芯冷却装置,包括反应堆容器本体,所述反应堆容器本体固设有第一防护罩,所述反应堆容器本体固设有第一连接环,所述注水管上固设有第二防护罩、第二连接环,所述第一连接环、第二连接环皆设有真空腔、真空吸附槽、连接槽,所述第一防护罩、第二防护罩皆固设有微型真空泵,所述第一防护罩固设有漏水报警机构,通过将真空腔、真空吸附槽、连接槽内的空气进行抽走,使其内部形成真空状态,因此,真空腔、真空吸附槽、连接槽内的压强将小于真空腔、真空吸附槽、连接槽外的压强,从而第一连接环、第二连接环连接在一起,且真空腔、真空吸附槽、连接槽内部的真空度越高,第一连接环、第二连接环吸合的越紧。(The invention discloses a reactor core cooling device of a neutron irradiator in a hospital, which comprises a reactor container body, wherein a first protective cover is fixedly arranged on the reactor container body, a first connecting ring is fixedly arranged on the reactor container body, a second protective cover and a second connecting ring are fixedly arranged on a water injection pipe, the first connecting ring and the second connecting ring are respectively provided with a vacuum cavity, a vacuum adsorption groove and a connecting groove, a micro vacuum pump is fixedly arranged on the first protective cover and the second protective cover, a water leakage alarm mechanism is fixedly arranged on the first protective cover, and air in the vacuum cavity, the vacuum adsorption groove and the connecting groove is pumped away to form a vacuum state in the first protective cover and the second protective cover, so that the pressure intensity in the vacuum cavity, the vacuum adsorption groove and the connecting groove is smaller than the pressure intensity outside the vacuum cavity, the vacuum adsorption groove and the connecting groove, the first connecting ring and the second connecting ring are connected together, and the vacuum cavity, the second connecting ring and the connecting groove are connected together, The higher the vacuum degree in the vacuum adsorption groove and the connecting groove is, the tighter the first connecting ring and the second connecting ring are sucked.)

1. A hospital neutron irradiator reactor core cooling device comprises a reactor vessel body (1), and is characterized in that: reactor vessel body (1) left end of intaking has set firmly first protection casing (6), reactor vessel body (1) left end right-hand member of intaking has set firmly first go-between (5), first go-between (5) right side is provided with water injection pipe (2), second protection casing (8) have set firmly on water injection pipe (2), second protection casing (8) inside is provided with second go-between (7), second go-between (7) cover is established on water injection pipe (2), first go-between (5), second go-between (7) inner chamber all are provided with vacuum chamber (12), all the dislocation is provided with a plurality of vacuum adsorption groove (10) on first go-between (5), second go-between (7) the opposite face, vacuum adsorption groove (10) are linked together through spread groove (11) and vacuum chamber (12), first protection casing (6) have been established, The one side that second protection casing (8) deviated from mutually all sets firmly micro vacuum pump (3), micro vacuum pump (3) are connected with vacuum cavity (12) through vacuum tube (4), first protection casing (6) bottom sets firmly leak water alarm mechanism.

2. The reactor core cooling device of the hospital neutron irradiator according to claim 1, characterized in that: mounting grooves (14) are formed in opposite surfaces of the first connecting ring (5) and the second connecting ring (7), magnetic rings (13) are fixedly arranged in the mounting grooves (14), and the two magnetic rings (13) attract each other magnetically.

3. The reactor core cooling device of the hospital neutron irradiator according to claim 1, characterized in that: the water injection pipe is characterized in that a sealing ring (9) is arranged on the left side of the second connecting ring (7), the sealing ring (9) is sleeved on the water injection pipe (2), and the first protective cover (6) and the second protective cover (8) are connected in an inserting mode.

4. The reactor core cooling device of the hospital neutron irradiator according to claim 1, characterized in that: the water leakage alarm mechanism comprises a first connecting pipe (15), an alarm (16), a water storage tank (17), a mounting ring (18), an air bag (19), a mounting plate (20), a waterproof switch (21), a protection block (22), a sliding block (23), a powder drying agent (24), a sliding groove (25), a first spring (26), a water-absorbing cotton column (36), a truncated cone-shaped base (37), a movable plate (38), a second connecting pipe (39), a second spring (41), a connecting column (42) and a puncture needle (43), wherein the water storage tank (17) is fixedly connected with the bottom of the first protective cover (6), the top end of the first connecting pipe (15) and the top end of the second connecting pipe (39) both penetrate through the bottom of the first protective cover (6) and extend into the first protective cover (6), and the first connecting pipe (15) and the second connecting pipe (39) are fixedly connected with the first protective cover (6), the inside sliding connection of second connecting pipe (39) has fly leaf (38), fly leaf (38) top has set firmly round platform shape base (37), cotton post (36) that absorbs water has set firmly at round platform shape base (37) top, cotton post (36) top that absorbs water extends to inside first protection casing (6), fly leaf (38) bottom has set firmly spliced pole (42), spliced pole (42) bottom runs through second connecting pipe (39) and extends to second connecting pipe (39) below and felting needle (43) rigid coupling, the cover is equipped with second spring (41) on spliced pole (42), felting needle (43) below is provided with a plurality of collar (18), collar (18) and storage water tank (17) inner wall rigid coupling, the inside gasbag (19) that has set firmly of collar (18), the inside powder desiccant (24) that is provided with of gasbag (19), gasbag (19) below is provided with two mounting panels (20), mounting panel (20) and storage water tank (17) rigid coupling, two all be provided with spout (25) on mounting panel (20) the opposite face, spout (25) inside sliding connection has sliding block (23), sliding block (23) bottom is connected with spout (25) through first spring (26), two protection piece (22) have set firmly between sliding block (23), protection piece (22) below is provided with waterproof switch (21), waterproof switch (21) and storage water tank (17) rigid coupling, storage water tank (17) inner chamber left side inner wall has set firmly alarm (16).

5. The reactor core cooling device of the hospital neutron irradiator according to claim 4, characterized in that: the waterproof switch (21) is electrically connected with the alarm (16), the top of the second spring (41) is fixedly connected with the bottom of the movable plate (38), and the bottom end of the second spring (41) is fixedly connected with the second connecting pipe (39).

6. The reactor core cooling device of the hospital neutron irradiator according to claim 4, characterized in that: the left side and the right side of the second connecting pipe (39) are provided with a plurality of water outlet grooves (40) in a penetrating way.

7. The reactor core cooling device of the hospital neutron irradiator according to claim 1, characterized in that: ball bearing (35) have all been set firmly in first protection casing (6) top and bottom, ball bearing (35) inside has set firmly second telescopic link (32), the one end that first protection casing (6) were kept away from in second telescopic link (32) has set firmly connecting plate (28), one side right-hand member that connecting plate (28) are close to first protection casing (6) has set firmly first telescopic link (29), the one end surface that first telescopic link (29) are close to first protection casing (6) is provided with external screw thread (33), measurement thin slice (34) have set firmly in the middle of one side that connecting plate (28) are close to first protection casing (6), second protection casing (8) surface has set firmly spacing ring (27), spacing ring (27) top and bottom have all set firmly internal thread pipe (31), internal thread pipe (31) internal thread threaded connection has internal and external thread pipe (30), the internal and external threaded pipes (30) are in threaded connection with external threads (33).

8. The apparatus for cooling the core of a hospital neutron irradiator according to claim 7, wherein: the left side surface of the measuring sheet (34) and the right side surface of the first protective cover (6) are on the same plane.

9. The reactor core cooling device of the hospital neutron irradiator according to claim 1, characterized in that: an exhaust pipe (44) is fixedly arranged on the vacuum pipe (4), and a cover cap (45) is connected to one end, far away from the vacuum pipe (4), of the exhaust pipe (44) in a threaded mode.

Technical Field

The invention relates to the field of neutron irradiators, in particular to a reactor core cooling device of a neutron irradiator in a hospital.

Background

Cancer is a killer seriously harming human health, and the prevention and treatment of cancer are worldwide problems. Chinese science and technology workers always work together with all countries in the world on scientific and technological innovation and equipment innovation of cancer diagnosis and treatment, and struggle for improving human health and welfare. The Chinese cancer center and academy of Chinese academy of sciences Hosche think that China has made a series of major breakthroughs in the scientific research field of cancer diagnosis and treatment, and makes outstanding contribution to the human health career. Among them, the first nuclear device specially used for BNCT (boron neutron capture therapy) to treat cancer, namely the "hospital neutron irradiator", designed and constructed by Zhou Yongmaozhi courier and Wang loyal courier of China is a prominent representative.

Neutron therapy, i.e. boron neutron capture therapy. Boron neutron capture therapy destroys cancer cells by nuclear reactions within the tumor cells. The principle is as follows: the patient is first injected with a boron-containing specific compound which has a strong affinity with cancer cells and, after entering the body, rapidly accumulates in the cancer cells with little distribution in other tissues. The boron-containing compound is non-toxic and harmless to human bodies, and has no treatment effect on cancers. At this time, neutron rays are irradiated, which do not cause much damage to the human body, but the neutrons and boron entering the cancer cells undergo a strong nuclear reaction to release a ray having a very strong killing power, which has a short range and is only one cancer cell long. Therefore, only cancer cells are killed, and surrounding tissues are not damaged. This technique of selectively killing only cancer cells of complex shape without damaging normal tissues is called boron neutron capture therapy.

The inside main part that carries out work of current neutron irradiator is the reactor vessel, its reactor vessel's core is the reactor core, the reactor core mainly is formed by fuel assembly combination, when neutron irradiator is used, fuel assembly in the reactor core can work, thereby can produce a large amount of heats, for guaranteeing that the reactor core can be fine normal work and long-time use, all can set up the cooling chamber in the reactor vessel, current cooling method mainly adopts normal atmospheric temperature and pressure natural cooling circulation, utilize the cooling chamber connecting tube to carry out the circulation flow of cooling water and cool down for the reactor core, but because the connection between the pipeline generally only adopts bolted connection, after using for a long time, the bolt is very easy not hard up and leads to the pipeline connection department phenomenon to take place, therefore, we design a hospital neutron irradiator reactor core cooling device.

Disclosure of Invention

The invention aims to provide a reactor core cooling device for a neutron irradiator in a hospital, which aims to solve the technical problem.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a hospital neutron irradiator reactor core cooling device, includes reactor vessel, the left water inlet of reactor vessel is served and has been set firmly first protection casing, the left water inlet of reactor vessel is served the right-hand member and has been set firmly first go-between, first go-between right side is provided with the water injection pipe, the second protection casing has been set firmly on the water injection pipe, the inside second go-between that is provided with of second protection casing, the second go-between cover is established on the water injection pipe, first go-between, second go-between inner chamber all are provided with the vacuum cavity, all misplace on first go-between, the second go-between opposite face and be provided with a plurality of vacuum adsorption tanks, the vacuum adsorption tank is linked together through spread groove and vacuum cavity, the one side that first protection casing, second protection casing deviate from each other all sets firmly micro vacuum pump, micro vacuum pump is connected with the vacuum cavity through the vacuum tube, and a water leakage alarm mechanism is fixedly arranged at the bottom of the first protective cover.

Preferably, the opposite surfaces of the first connecting ring and the second connecting ring are provided with mounting grooves, magnetic rings are fixedly arranged in the mounting grooves, and the two magnetic rings are attracted magnetically.

Preferably, a sealing ring is arranged on the left side of the second connecting ring, the sealing ring is sleeved on the water injection pipe, and the first protective cover and the second protective cover are connected in an inserting mode.

Preferably, the water leakage alarm mechanism comprises a first connecting pipe, an alarm, a water storage tank, a mounting ring, an air bag, a mounting plate, a waterproof switch, a protective block, a sliding block, a powder drying agent, a sliding chute, a first spring, a water absorption cotton column, a truncated cone-shaped base, a movable plate, a second connecting pipe, a second spring, a connecting column and a puncture needle, wherein the water storage tank is fixedly connected with the bottom of the first protective cover, the top end of the first connecting pipe and the top end of the second connecting pipe both penetrate through the bottom of the first protective cover and extend into the first protective cover, the first connecting pipe and the second connecting pipe are fixedly connected with the first protective cover, the inner part of the second connecting pipe is slidably connected with the movable plate, the top of the movable plate is fixedly provided with the truncated cone-shaped base, the top of the truncated cone-shaped base is fixedly provided with the water absorption cotton column, the top of the water absorption cotton column extends into the first protective cover, and the bottom of the movable plate is fixedly provided with the connecting column, the spliced pole bottom runs through the second connecting pipe and extends to second connecting pipe below and felting needle rigid coupling, the cover is equipped with the second spring on the spliced pole, the felting needle below is provided with a plurality of collars, collar and storage water tank inner wall rigid coupling, the collar inside has set firmly the gasbag, the inside powder drier that is provided with of gasbag, the gasbag below is provided with two mounting panels, mounting panel and storage water tank rigid coupling, two all be provided with the spout on the mounting panel opposite face, the inside sliding connection of spout has the sliding block, the sliding block bottom is connected with the spout through first spring, two the protection piece has set firmly between the sliding block, protection piece below is provided with waterproof switch, waterproof switch and storage water tank rigid coupling, storage water tank inner chamber left side inner wall has set firmly the alarm.

Preferably, the waterproof switch is electrically connected with the alarm, the top of the second spring is fixedly connected with the bottom of the movable plate, and the bottom of the second spring is fixedly connected with the second connecting pipe.

Preferably, a plurality of water outlet grooves are formed in the left side and the right side of the second connecting pipe in a penetrating mode.

Preferably, state first protection casing top and bottom and all set firmly ball bearing, ball bearing inside has set firmly the second telescopic link, the one end that first protection casing was kept away from to the second telescopic link has set firmly the connecting plate, one side right-hand member that the connecting plate is close to first protection casing has set firmly first telescopic link, the one end surface that first telescopic link is close to first protection casing is provided with the external screw thread, the measuring thin slice has set firmly in the middle of one side that the connecting plate is close to first protection casing, second protection casing surface has set firmly the spacing ring, the internal thread pipe has all set firmly internal thread pipe in spacing ring top and bottom, internal thread pipe threaded connection has interior external thread pipe, interior external thread pipe and external thread threaded connection.

Preferably, the left side of the measuring sheet is in the same plane as the right side of the first protective cover.

Preferably, an exhaust pipe is fixedly arranged on the vacuum pipe, and a cover cap is connected to one end, far away from the vacuum pipe, of the exhaust pipe in a threaded manner.

The invention has the beneficial effects that:

1. according to the invention, air in the vacuum cavity, the vacuum adsorption groove and the connecting groove is pumped away to form a vacuum state in the vacuum cavity, so that the pressure inside the vacuum cavity, the vacuum adsorption groove and the connecting groove is smaller than the pressure outside the vacuum cavity, the vacuum adsorption groove and the connecting groove, the first connecting ring and the second connecting ring are connected together, and the higher the vacuum degree inside the vacuum cavity, the vacuum adsorption groove and the connecting groove is, the tighter the first connecting ring and the second connecting ring are sucked, and the connection of pipelines is realized.

2. Through the alarm mechanism that leaks not only can be timely send out the police dispatch newspaper and inform the staff that the trouble appears, need the maintenance, can carry out the gathering with the water source that flows out moreover dry, avoid the water source to flow to other places, cause the damage of other positions.

3. Through measuring thin slice, first telescopic link, second telescopic link, interior external screw thread pipe, internal thread pipe, not only can further the reinforcement connect, but also can whether not hard up production gap appears in automated inspection pipe connection department.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of the portion B of FIG. 1;

FIG. 4 is a left side view of the first link ring of the present invention;

FIG. 5 is a schematic view of the connection between the mounting plate and the slider according to the present invention;

FIG. 6 is a schematic view of the connection between the first and second shields of the present invention;

FIG. 7 is an enlarged view of a portion of portion C of FIG. 6 in accordance with the present invention;

FIG. 8 is a schematic view of the connection of the vacuum tube to the exhaust tube of the present invention;

reference numerals: 1-a reactor vessel body; 2-water injection pipe; 3-a micro vacuum pump; 4-vacuum tube; 5-a first connecting ring; 6-a first shield; 7-a second connecting ring; 8-a second shield; 9-sealing ring; 10-vacuum adsorption tank; 11-a connecting trough; 12-a vacuum chamber; 13-a magnetic ring; 14-mounting grooves; 15-a first connection pipe; 16-an alarm; 17-a water storage tank; 18-a mounting ring; 19-air bag; 20-mounting a plate; 21-waterproof switch; 22-a guard block; 23-a slider; 24-a powdered desiccant; 25-a chute; 26-a first spring; 27-a stop collar; 28-a connecting plate; 29-a first telescopic rod; 30-internal and external thread pipes; 31-an internally threaded tube; 32-a second telescoping rod; 33-external threads; 34-measuring the flakes; 35-ball bearings; 36-absorbent cotton columns; 37-a truncated cone shaped base; 38-a movable plate; 39-second connecting pipe; 40-water outlet groove; 41-a second spring; 42-connecting column; 43-a needle; 44-an exhaust pipe; 45-cover cap.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-8, a reactor core cooling device for a neutron irradiator in a hospital comprises a reactor vessel 1, a first protective cover 6 is fixedly arranged on a water inlet end on the left side of the reactor vessel 1, a first connecting ring 5 is fixedly arranged on the right end of the water inlet end on the left side of the reactor vessel 1, a water injection pipe 2 is arranged on the right side of the first connecting ring 5, a second protective cover 8 is fixedly arranged on the water injection pipe 2, a second connecting ring 7 is arranged inside the second protective cover 8, the second connecting ring 7 is sleeved on the water injection pipe 2, vacuum chambers 12 are arranged in inner cavities of the first connecting ring 5 and the second connecting ring 7, a plurality of vacuum adsorption tanks 10 are arranged on opposite surfaces of the first connecting ring 5 and the second connecting ring 7 in a staggered manner, the vacuum adsorption tanks 10 are communicated with the vacuum chambers 12 through connecting grooves 11, and micro vacuum pumps 3 are fixedly arranged on opposite surfaces of the first protective cover 6 and the second protective cover 8, the micro vacuum pump 3 is connected with the vacuum cavity 12 through the vacuum tube 4, the bottom of the first shield 6 is fixedly provided with a water leakage alarm mechanism, when in use, the second shield 8 is inserted into the first shield 6 on the reactor vessel body 1, when the first connecting ring 5 and the second connecting ring 7 are in close contact, the second shield 8 is stopped from being inserted into the first shield 6, and when the first connecting ring 5 and the second connecting ring 7 are in close contact, the vacuum adsorption grooves 10 on the first connecting ring 5 and the second connecting ring 7 are all staggered, then the micro vacuum pump 3 is started, the air in the vacuum cavity 12, the vacuum adsorption groove 10 and the connecting groove 11 is pumped away by the micro vacuum pump 3, so that the vacuum state is formed inside the vacuum cavity 12, the vacuum adsorption groove 10 and the connecting groove 11, therefore, the pressure inside the vacuum cavity 12, the vacuum adsorption groove 10 and the connecting groove 11 is smaller than the pressure outside the vacuum cavity 12, the vacuum adsorption groove 10 and the connecting groove 11, thereby the first connecting ring 5 and the second connecting ring 7 are connected together, the higher the vacuum degree inside the vacuum cavity 12, the vacuum absorption groove 10 and the connecting groove 11 is, the tighter the first connecting ring 5 and the second connecting ring 7 are sucked, thereby realizing the connection of the pipeline, the opposite surfaces of the first connecting ring 5 and the second connecting ring 7 are all provided with mounting grooves 14, magnetic rings 13 are fixedly arranged inside the mounting grooves 14, the two magnetic rings 13 are magnetically sucked, the stable connection can be further realized by virtue of the magnetism of the two magnetic rings 13, the left side of the second connecting ring 7 is provided with a sealing ring 9, the sealing ring 9 is sleeved on the water injection pipe 2, the first protective cover 6 and the second protective cover 8 are spliced, because the diameter of the water injection pipe 2 is smaller than the diameter of the connecting end of the reactor vessel body 1, the sealing ring 9 is arranged outside the water injection pipe 2, so that the water injection pipe 2 can be well spliced with the connecting end of the reactor vessel body 1, and the sealing ring 9 plays a role in sealing, the probability of water leakage at the joint is greatly reduced, the vacuum tube 4 is fixedly provided with the exhaust pipe 44, and one end of the exhaust pipe 44, which is far away from the vacuum tube 4, is in threaded connection with the cap 45.

Example 2

As shown in fig. 1 to 8, in the case where the other parts are the same as those of embodiment 1, this embodiment is different from embodiment 1 in that: the water leakage alarm mechanism comprises a first connecting pipe 15, an alarm 16, a water storage tank 17, a mounting ring 18, an air bag 19, a mounting plate 20, a waterproof switch 21, a protection block 22, a sliding block 23, a powder drying agent 24, a sliding groove 25, a first spring 26, a water absorption cotton column 36, a truncated cone-shaped base 37, a movable plate 38, a second connecting pipe 39, a second spring 41, a connecting column 42 and a puncture needle 43, wherein the water storage tank 17 is fixedly connected with the bottom of a first protection cover 6, the top end of the first connecting pipe 15 and the top end of the second connecting pipe 39 penetrate through the bottom end of the first protection cover 6 and extend into the first protection cover 6, the movable plate 38 is slidably connected in the second connecting pipe 39, the truncated cone-shaped base 37 is fixedly arranged at the top of the movable plate 38, the water absorption cotton column 36 is fixedly arranged at the top of the truncated cone-shaped base 37, the top end of the water absorption cotton column 36 extends into the first protection cover 6, a connecting column 42 is fixedly arranged at the bottom of the movable plate 38, the bottom of the connecting column 42 penetrates through the second connecting pipe 39 and extends to the lower part of the second connecting pipe 39 to be fixedly connected with a puncture needle 43, a second spring 41 is sleeved on the connecting column 42, a plurality of mounting rings 18 are arranged below the puncture needle 43, the mounting rings 18 are fixedly connected with the inner wall of the water storage tank 17, an air bag 19 is fixedly arranged inside the mounting rings 18, a powder drying agent 24 is arranged inside the air bag 19, two mounting plates 20 are arranged below the air bag 19, the mounting plates 20 are fixedly connected with the water storage tank 17, sliding grooves 25 are arranged on opposite surfaces of the two mounting plates 20, sliding blocks 23 are slidably connected inside the sliding grooves 25, the bottom of each sliding block 23 is connected with the corresponding sliding groove 25 through a first spring 26, a protection block 22 is fixedly arranged between the two sliding blocks 23, a waterproof switch 21 is arranged below the protection block 22, the waterproof switch 21 is fixedly connected with the water storage tank 17, and an alarm 16 is fixedly arranged on the left inner wall of the inner cavity of the water storage tank 17, when the waterproof switch 21 is electrically connected with the alarm 16, the top of the second spring 41 is fixedly connected with the bottom of the movable plate 38, and the bottom of the second spring 41 is fixedly connected with the second connecting pipe 39, when water leaks from the first connecting ring 5 and the second connecting ring 7, the water flows into the left side of the bottom of the inner cavity of the first protective cover 6 through the second protective cover 8, the inflowing water is absorbed by the absorbent cotton column 36, the weight of the absorbent cotton column 36 is increased along with the increase of the absorption of the absorbent cotton column 36, so that the absorbent cotton column 36 drives the movable plate 38 to move downwards, the movable plate 38 extrudes the second spring 41 to drive the connecting column 42 to move downwards, the connecting column 42 drives the pricking pins 43 to move downwards, when the pricking pins 43 move downwards to a designated position, the pricking pins 43 can puncture a plurality of air bags 19 in sequence, the air bags 19 explode, make a sound to prompt a worker that the worker has a fault and needs maintenance, and when the air bags 19 explode, the powder drying agent 24 in the air bags 19 can be ejected out, a part of the powder drying agent 24 is left in the water storage tank 17, the other part of the powder drying agent enters the first protective cover 6 through the first connecting pipe 15 to dry a water source, when the air bag 19 is completely exploded and a worker is not maintained, the needle 43 moves downwards, the needle 43 presses the protective block 22, the protective block 22 drives the sliding block 23 to move downwards to press the first spring 26, when the protective block 22 moves downwards to a specified position, the protective block 22 presses the waterproof switch 21, the waterproof switch 21 starts the alarm 16, the alarm 16 further gives an alarm, and therefore the worker is reminded that the position needs to be maintained; when part of water is not absorbed by the absorbent cotton column 36, the water will flow into the water storage tank 17 through the first connecting pipe 15, the inflowing water source can be further dried because the powder drying agent 24 sprayed after the air bag 19 explodes is arranged in the water storage tank 17, the left side and the right side of the second connecting pipe 39 are both provided with a plurality of water outlet grooves 40 in a penetrating manner, because the absorbent cotton column 36 has limited water absorption capacity, when absorbing a certain amount of water source, the water cannot be absorbed, at this time, the water will remain in the second connecting pipe 39, the movable plate 38 is driven by the absorbent cotton column 36 to continuously move downwards, when the movable plate 38 moves downwards below the water outlet grooves 40, the remaining water will flow into the water storage tank 17 through the water outlet grooves 40, the water source can be effectively transferred, and the water source is prevented from flowing randomly, so that the rest parts are damaged.

Example 3

As shown in fig. 1 to 8, in the case where the other parts are the same as those of embodiment 2, this embodiment is different from embodiment 1 in that: the top and the bottom of the first protection cover 6 are all fixedly provided with ball bearings 35, the inside of the ball bearings 35 is fixedly provided with a second telescopic rod 32, one end of the second telescopic rod 32, which is far away from the first protection cover 6, is fixedly provided with a connecting plate 28, the right end of one side of the connecting plate 28, which is close to the first protection cover 6, is fixedly provided with a first telescopic rod 29, the surface of one end of the first telescopic rod 29, which is close to the first protection cover 6, is provided with an external thread 33, the middle of one side of the connecting plate 28, which is close to the first protection cover 6, is fixedly provided with a measuring sheet 34, the surface of the second protection cover 8 is fixedly provided with a limiting ring 27, the top and the bottom of the limiting ring 27 are both fixedly provided with an internal thread pipe 31, the internal thread pipe 31 is internally and externally connected with an external thread pipe 30, the internal thread pipe 30 and the external thread 33 are in threaded connection, the left side surface of the measuring sheet 34 and the right side surface of the first protection cover 6 are on the same plane, when the first protection cover 6 and the second protection cover 8 are connected, through rotating second telescopic link 32, second telescopic link 32 drives first telescopic link 29 and rotates, make first telescopic link 29 be located inside and outside screwed pipe 30 top, inside and outside screwed pipe 30 rotates afterwards, make inside and outside screwed pipe 30 and the external screw thread 33 threaded connection on the first telescopic link 29 can, thereby first protection casing 6 has been consolidated, the connection of second protection casing 8, and measure thin slice 34 and just be in first protection casing 6, the junction of second protection casing 8, when first protection casing 6, the junction of second protection casing 8 appears becoming flexible, when producing and being greater than the gap of measuring thin slice 34 thickness, it can get into the gap to measure thin slice 34, thereby whether the staff can learn to take place to become flexible through the position of observing measurement thin slice 34, produce the gap.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.