CN111879567A - A radioactive suspended matter and sediment sampling device in a storage tank and a method of using the same - Google Patents

Abstract

The invention discloses a radioactive suspended matter and sediment sampling device in a storage tank, comprising a mobile support seat, a rotary bearing mounted on the mobile support seat, and a displacement mechanism mounted on the rotary bearing, respectively mounted on The reeling mechanism and the tank moving mechanism on the displacement mechanism, the lifting tank driven by the tank moving mechanism and connected with the reeling mechanism, and the reeling mechanism respectively driven by the tank moving mechanism and electrically connected to the reeling mechanism The control system, wherein the coiling mechanism is used to control the opening and closing of the extraction tank. The invention can move the mobile support base to a certain position according to the required sampling position, and rotate the slewing bearing to adjust the sampling angle. After adjusting to the required angle, the tank moving mechanism can also be moved by controlling the displacement mechanism. And the position of the coiling mechanism, and then take out the samples at different positions on the same plane in the radioactive waste liquid storage tank.

Description

A radioactive suspended matter and sediment sampling device in a storage tank and a method of using the same

technical field

The invention relates to the field of decommissioning and treatment of nuclear facilities, in particular to a radioactive suspended matter and sediment sampling device in a storage tank and a method for using the same.

Background technique

During the decommissioning process of storage tanks in nuclear facilities, radioactive substances of different densities are stored in different positions in the storage tanks. Most of these substances have a certain fluidity, which may be sediment, mud, or uncompacted resin and radioactive waste liquid. As well as other radioactive substances with certain mobility, due to the long storage time, they are layered in layers after deposition. When carrying out the research on the radioactive waste treatment technology of the radioactive waste liquid storage tank and the design of the decommissioning plan, it is necessary to carry out sampling and analysis of the waste in the radioactive waste liquid storage tank at different depths, so as to accurately obtain the source item information of the waste in the radioactive waste liquid storage tank.

Due to the early construction time of some nuclear facilities in my country and the imperfect information system, during the design, construction and maintenance of radioactive waste liquid storage tanks, no sound system has been established for the sampling of suspended solids and sediments in radioactive waste liquid storage tanks. Specialized matching system. At present, the high, medium and low radioactive waste liquids in the radioactive waste liquid storage tanks are equipped with dedicated radioactive waste liquid sampling systems, but the sampling of suspended solids and sediments in the storage tanks is not considered, and the radioactive waste liquid sampling system cannot be applied. for radioactive suspension and sediment sampling. Due to the low level of radioactivity in the low-level radioactive waste liquid storage tank, the degree of radiation damage to personnel is small. The existing method of sampling radioactive deposits in the tank is that personnel pass through the manhole of the radioactive waste liquid storage tank and use simple tools to insert the radioactive waste liquid. Bottom of storage tank, carrying bottom radioactive deposits and collecting into sampling bottles. This method is difficult to carry out sampling of suspended solids and sediments in radioactive waste liquid storage tanks, the collected radioactive suspended solids and sediment samples are not representative enough, and it is impossible to achieve sample extraction at different depths in radioactive waste liquid storage tanks. The distribution of suspended solids and sediments in the waste liquid storage tank cannot be accurately determined. Therefore, it is extremely important to design a new radioactive waste liquid storage tank suspension and sediment sampling system, which can solve the inaccuracy of stratified sampling, poor solid-liquid separation, large amount of radioactive waste, etc. Problems such as poor safety and difficulty in controlling the radiation exposure of operators.

SUMMARY OF THE INVENTION

In order to overcome the problems existing in the prior art, the present invention provides a radioactive suspension and sediment sampling device in a storage tank for sampling at different positions in a radioactive waste liquid storage tank.

For achieving the above object, the technical scheme adopted in the present invention is as follows:

A radioactive suspended matter and sediment sampling device in a storage tank, comprising a mobile support base, a rotary bearing mounted on the mobile support base, and a displacement mechanism mounted on the rotary bearing, respectively mounted on the displacement The reeling mechanism and the tank moving mechanism on the mechanism, the lifting tank driven by the tank moving mechanism and connected with the reeling mechanism, and the control system respectively driven by the tank moving mechanism and electrically connected to the reeling mechanism, Wherein, the coiling mechanism is used to control the opening and closing of the extraction tank.

Further, the displacement mechanism includes a base mounted on the slewing bearing, a fixed sleeve fixed on the base, a screw rod with one end sleeved in the fixed sleeve, and fixed on the base And the first bearing used to support the other end of the screw rod is fixed to the end of the fixed sleeve away from the first bearing and used to support the second bearing of the screw rod, which is located on the side of the second bearing and is connected to the second bearing. a hand wheel coaxially connected with the screw rod, a screw rod sleeve threadedly connected to the screw rod, a rack located on the base and fixedly connected to the screw rod sleeve, a support block fixedly connected to the screw rod sleeve, and A support piece fixed on the base and slidably connected to the support block, wherein the tank body moving mechanism drives and the coiling mechanism are respectively installed on the support block, the rack is engaged with the screw rod, and the coiling mechanism and the tank body moving mechanism are respectively installed on the support block.

Specifically, the tube reeling mechanism includes two support frames symmetrically arranged on the support block, and a hollow first rotating shaft mounted on the support frame through a bearing is disposed on the first rotating shaft The air inlet interface and the exhaust interface communicated with the inside of the first rotating shaft, the trachea drum and the chain drum that are sleeved on the first rotating shaft adjacently, and the trachea wrapped around the tracheal drum are wrapped around the The chain on the chain drum, the first sprocket that is sleeved on one end of the first rotating shaft, and the air cylinder connected to the air pipe and installed on the lifting tank, wherein the two ends of the first rotating shaft are respectively connected with the cylinder. The external air intake pipe is connected with the exhaust pipe, the air pipe is respectively connected with the intake port and the exhaust port, the cylinder is electrically connected with the control system, and the air pipe, the chain and the first sprocket are connected with the tank body moving mechanism.

Specifically, the tank moving mechanism includes a tank feeding mechanism that drives the gas pipe to move and is mounted on the support block, and a tank lifting mechanism mounted on the support block, wherein the first sprocket is connected to the tank lifting mechanism.

Specifically, the can feeding mechanism includes a can feeding motor mounted on a support block, a first electromagnetic clutch coaxially connected to the can feeding motor, and a second rotating shaft coaxially connected to the first electromagnetic clutch, The two bearing seats are arranged on the support block and used to support the second rotating shaft, and the two second sprockets are sleeved on the second rotating shaft and located between the two bearing seats, and are fixed to the two bearing seats. a rotating shaft cover on the bearing seat, and a third sprocket sleeved on the second rotating shaft and located outside the rotating shaft cover, wherein the third sprocket and the first sprocket are driven by a transmission chain, and the The second sprocket is connected to the tank lifting mechanism through a transmission chain, the shaft cover is provided with an opening for accommodating the transmission chain to pass through the second sprocket, and the tank feeding motor and the first electromagnetic clutch are respectively connected with the control system Electrical connection.

Specifically, the tank lifting mechanism includes a tank lifting motor installed in the support block, a second electromagnetic clutch coaxially connected to the tank lifting motor, and a third rotating shaft coaxially connected to the second electromagnetic clutch, Two chain drums fixed on the third rotating shaft, a third bearing installed at the end of the third rotating shaft, and a fourth chain located in the chain drum and sleeved on the third rotating shaft wheel, wherein the chain and the gas pipe are fixedly connected to the lifting tank around the third rotating shaft, the fourth sprocket and the second chain wheel are connected through a transmission chain, and the tank lifting motor and the second electromagnetic clutch are respectively Electrically connected to the control system.

Specifically, the control system is a PLC control system.

Further, the rotation angle of the slewing bearing is 140°.

Specifically, the extracting tank includes a tank body fixedly connected with a chain, a lid which is covered on the tank body and is opened and closed by a cylinder, wherein the cylinder is fixed on the tank body.

The present invention also provides a method for using the radioactive suspended matter and sediment sampling device in the storage tank, comprising the following steps:

S1. According to the position of the sampling port of the radioactive storage tank, push the moving support base to the position of the sampling port, and turn on the power of the control system;

S2. Make sure that the extraction tank is located above the sampling port, and after the extraction tank is well closed, rotate the slewing bearing, and at the same time control the moving position of the displacement mechanism, so that the coiling mechanism and the tank moving mechanism are located above the sampling port;

S3. Set the sampling position on the control system, control the tank moving mechanism to lower the extraction tank to the sampling position, and control the coiling mechanism to open the extraction tank for sample loading;

S4. After the sample loading in the extraction tank is completed, set a lifting position on the control system, the control system controls the coiling mechanism to close the extraction tank, and controls the tank moving mechanism to drive the extraction tank to rise;

S5. After the extraction tank rises to the designated position, the operator removes the extraction tank and moves it into a shielded transfer container for storage, and the sampling is completed.

Compared with the prior art, the present invention has the following beneficial effects:

(1) The present invention can move the mobile support base to a certain position according to the required sampling position, and rotate the slewing bearing to adjust the sampling angle. After adjusting to the required angle, the tank can also be moved by controlling the displacement mechanism. The position of the body moving mechanism and the coiling mechanism can be used to take out samples from different positions on the same plane in the radioactive waste liquid storage tank. Compared with the manhole of the radioactive liquid storage tank, a simple tool is used to insert the bottom of the radioactive waste liquid storage tank. In terms of carrying the radioactive sediment at the bottom and collecting it into the sampling bottle, the present invention can directly control the sampling of the extraction tank through the control system, without the need for people to come into close contact with the radioactive material, ensuring the safety of sampling, and at the same time, the operator is exposed to the amount of radioactive radiation. Controllable.

(2) The present invention can control the tank moving mechanism through the control system, specifically control the tank lifting mechanism and the tank feeding mechanism to rotate in the forward and reverse directions, and drive the air pipe and the chain to rise and fall, so as to realize the radioactivity of different heights. The purpose of sampling suspended solids and sediments, and the opening and closing of the extraction tank can be realized by controlling the coiling mechanism through the control system. Specifically, the opening and closing of the lid can be controlled by controlling the work of the cylinder, thereby controlling the radioactive suspension of the tank at different heights. Sampling of sediments and sediments can improve the accuracy of sampling. According to the needs of sampling, sampling at different heights can also improve the effect of solid-liquid separation.

(3) The sampling device of the present invention can not only be used for sampling of suspended solids and sediments in low-level waste liquid storage tanks, but also can be applied to the sampling of suspended solids and sediments in medium and high-level waste liquid storage tanks and petrochemical fields. Or sampling operations in other toxic and harmful industries, and have a wide range of applications.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of the displacement mechanism of the present invention.

FIG. 3 is a schematic structural diagram of the reeling mechanism of the present invention.

FIG. 4 is a schematic structural diagram of the can lifting mechanism of the present invention.

FIG. 5 is a schematic structural diagram of the tank feeding mechanism of the present invention.

Fig. 6 is a partial enlarged view of the extraction tank of the present invention.

Among them, the names corresponding to the reference signs are:

1-Moving support base, 2-Rotary bearing, 3-Shift mechanism, 4-Tube rolling mechanism, 5-Tank moving mechanism, 6-Lifting tank, 31-Base, 32-Fixing sleeve, 33-Screw , 34-first bearing, 35-second bearing, 36-handwheel, 37-screw sleeve, 38-rack, 39-support block, 310-support, 41-support frame, 42-first rotating shaft , 43-air inlet port, 44-exhaust port, 45-trachea roller, 46-chain roller, 47-trachea, 48-first sprocket, 49-cylinder, 410-chain, 51-tank feeding mechanism, 52- Tank lifting mechanism, 511-tank feeding motor, 512-first electromagnetic clutch, 513-second rotating shaft, 514-bearing seat, 515-rotating shaft cover, 516-second sprocket, 517-third sprocket, 521- Can carrying motor, 522-second electromagnetic clutch, 523-third rotating shaft, 524-winding drum, 525-third bearing, 526-fourth sprocket, 61-can body, 62-cover.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and examples, and the modes of the present invention include but are not limited to the following examples.

Example

As shown in Figures 1 to 6, the radioactive suspended matter and sediment sampling device in the storage tank includes a moving support base 1, a rotary bearing 2, a displacement mechanism 3, a coiling mechanism 4, a tank body moving mechanism 5, and a lifting tank 6 and control systems, etc.

The mobile support base 1 is used to support the displacement mechanism 3, the tube rolling mechanism 4 and the tank body moving mechanism 5, and four pulleys are installed at the bottom at equal intervals for moving on the ground, and there are two adjacent pulleys on the bottom. With a brake, the mobile support base 1 can be fixed in position, which is convenient for sampling.

The slewing bearing 2 is installed on the moving support base 1, and its rotation angle is 140°, so that the moving mechanism 3 located thereon can rotate with the rotation of the slewing bearing 2, which is convenient for adjusting the sampling position.

The displacement mechanism 3 is installed on the slewing bearing 2, and includes a base 31, a fixed sleeve 32, a screw rod 33, a first bearing 34, a second bearing 35, a hand wheel 36, a screw sleeve 37, a rack 38, and a support block 39 and support 310. The base 31 is fixed on the slewing bearing 2 for support; the fixed sleeve 32 is fixed on one end of the base 31 , and a screw rod 33 is sleeved inside it; one end of the screw rod 33 is connected to the fixed sleeve 32 through the second bearing 35 , the other end is supported by the first bearing 34, and the end connecting the second bearing 35 is coaxially connected with the handwheel 36. Under the rotation of the handwheel 26, the screw rod 33 rotates accordingly; the first bearing 34 is vertically fixed to the base 31, it is used to support the screw rod 33; the second bearing 35 is also used to support the screw rod 33; the hand wheel 36 is coaxially connected to the screw rod 33, and the hand wheel 36 rotates at the same time. Drive the screw rod 33 to rotate together; the screw rod sleeve 37 is sleeved on the screw rod 33, and it is threadedly connected with the screw rod 33. When the screw rod 33 rotates, the screw rod sleeve 37 moves back and forth, and is fixedly connected with the support block 39. , is used to drive the support block 39 to move back and forth; the rack 38 is slidably installed on the base 31, which is fixedly connected with the screw sleeve 37 and meshes with the screw 33. With the rotation of the screw 33, the rack 38 moves back and forth, At the same time, it brings a supporting force to the screw sleeve 37 to support the support block 39; the bottom of one end of the support block 39 is installed on the screw sleeve 37, which moves with the front and rear movement of the screw sleeve 37, and the bottom of the other end slides Installed on the support member 310; the support member 310 supports the support block 39. When the support block 39 moves back and forth, the support member 310 supports the support block 39 and does not affect the movement of the support block 39.

The tube reeling mechanism 4 includes a support frame 41 , a first rotating shaft 42 , an air intake port 43 , an exhaust port 44 , an air pipe roller 45 , a chain roller 46 , an air pipe 47 , a first sprocket 48 , a cylinder 49 and a chain 410 . Among them, there are two supporting frames 41 symmetrically arranged on the supporting block 39, which are used to support both ends of the first rotating shaft 42; the first rotating shaft 42 is mounted on the supporting frame 41 through bearings, and its interior is hollow and has two The ends are respectively connected with the external air intake pipe and the exhaust pipe; the air intake interface 43 is arranged on the first rotating shaft 42 and communicated with the first rotating shaft 42, and the external air compressor transports the air into the first rotating shaft 42 through the intake pipe The air is sent to the air intake port 43, and the air is delivered to the air pipe 47 by the air intake port 43 to provide power for the cylinder 49; the exhaust port 44 is also arranged on the first rotating shaft 42 and communicates with the first rotating shaft 42 , close the external air compressor and open the exhaust pipe at the same time, so that the gas in the gas pipe 47 is discharged, and between the exhaust and the intake, the cylinder 49 drives the cover 62 to complete one opening and closing; the gas pipe roller 45 is sleeved on the first On the rotating shaft 42, it is used to wind the air pipe 47; the chain drum 46 is also sleeved on the first rotating shaft 42 for winding the chain 410. When the lifting tank 6 needs to be lowered, the tank feeding motor 511 An electromagnetic clutch 512 drives the second rotating shaft 513 to rotate, thereby drives the second sprocket 516 and the third sprocket 517 to rotate, and then drives the first sprocket 48 and the fourth sprocket 526 to rotate through the transmission chain, thereby driving the first sprocket 48 and the fourth sprocket 526 to rotate. The rotating shaft 42 and the third rotating shaft 523 rotate, the trachea drum 45 and the chain drum 46 rotate in the opposite direction, the trachea 47 and the chain 410 are transported downward, so that the lifting tank 6 descends; The air port 44 is communicated with the other end of the air cylinder 49 for transmitting gas to the air cylinder 49; the first sprocket 48 is sleeved on the first rotating shaft 42, and is driven by the transmission chain with the third sprocket 517, so that The first rotating shaft 42 can be driven by the tank feeding motor 511; the cylinder 49 is installed on one side of the tank body 61, which is fixedly connected with the cover 62, and is electrically connected with the control system, and drives the cover 62 to open and close under the control of the control system .

The can body moving mechanism 5 includes a can feeding mechanism 51 and a can lifting mechanism 52 . Among them, the tank feeding mechanism 51 is used to drive the air pipe 47 and the chain 410 to convey downwards, and the lifting tank 6 is lowered for sample loading, which is installed on the support block 39; the tank lifting mechanism 52 is installed on the support block 39 and is used to drive the air pipe. 47 and the chain 410 are rewound, driving the lifting tank 6 to rise.

The can feeding mechanism 51 includes a can feeding motor 511 , a first electromagnetic clutch 512 , a second rotating shaft 513 , a bearing seat 514 , a rotating shaft cover 515 , a second sprocket 516 and a third sprocket 517 . Wherein, the tank feeding motor 511 is installed on the support block 39, which is electrically connected to the control system and coaxially connected to the first electromagnetic clutch 512, which is used to provide power; the first electromagnetic clutch 512 is connected to the second rotating shaft 513 and is connected to The control system is electrically connected, which drives the second rotating shaft 513 to rotate and stop; the second rotating shaft 513 is driven by the can feeding motor 511, on which a second sprocket 516 is sleeved; the number of bearing seats 514 is two and passes through the bearing It is connected with the second rotating shaft 513, which is used to support and stabilize the second rotating shaft 513; the two ends of the rotating shaft cover 515 are fixed on the two bearing seats 514, and there are openings for accommodating the transmission chain, so that the transmission chain is sleeved on the two bearing seats 514. On the second sprocket 516; the number of the second sprocket 516 is two and symmetrically distributed in the rotating shaft cover 515, and the fourth sprocket 526 is driven by a transmission chain; the third sprocket 517 is sleeved on the second rotating shaft 513 The end and the first sprocket 48 are driven by a transmission chain. When the lifting tank 6 is lowered, the tank feeding motor 511 is controlled to start, and the second rotating shaft 513 is driven to rotate through the first electromagnetic clutch 512, thereby driving the second sprocket. 516 and the third sprocket 517 rotate, and then drive the first sprocket 48 and the fourth sprocket 526 to rotate through the transmission chain, thereby driving the first rotating shaft 42 and the third rotating shaft 523 to rotate, and the third rotating shaft 523 rotates At this time, the second electromagnetic clutch 522 stops working, so that the third rotating shaft 523 can rotate with the fourth sprocket 526, the air tube drum 45 and the chain drum 46 rotate in the opposite direction, the air tube 47 and the chain 410 are transported downward, so that the lifting tank 6 drops.

The tank lifting mechanism 52 includes a tank lifting motor 521 , a second electromagnetic clutch 522 , a third rotating shaft 523 , a winding drum 524 , a third bearing 525 and a fourth sprocket 526 . The tank lift motor 521 is installed on the support block 39 and is electrically connected to the control system, and is coaxially connected to the second electromagnetic clutch 522; the second electromagnetic clutch 522 is coaxially connected to the third rotating shaft 523 and is connected to the control system It is electrically connected to drive the third rotating shaft 523 to rotate. When the second electromagnetic clutch 522 is working, the first electromagnetic clutch 512 is in a stop working state. When the first electromagnetic clutch 512 is working, the second electromagnetic clutch 522 is at a stop working state. The third rotating shaft 523 is used to bypass the chain 410 and the air pipe 47; the number of chain reels 524 is two, and is fixed on the third rotating shaft 523, and a fourth chain is installed in the two chain reels 524. wheel 526; the fourth sprocket 526 and the second sprocket 516 are connected by a transmission chain, so that the two rotate in the same direction. When the tank needs to be lifted, the tank lift motor 521 and the second electromagnetic clutch 522 can be turned on, and the tank feed motor 511 can be turned off. and the first electromagnetic clutch 512 to drive the third rotating shaft 523 to rotate, which in turn drives the fourth sprocket 526 to rotate, drives the second sprocket 516 to rotate, makes the third sprocket 517 rotate, drives the first sprocket 48 to rotate, and makes the coil The pipe mechanism 4 rotates accordingly, rewinds the chain 410 and the air pipe 47, and drives the lifting tank 6 to move up.

The extraction tank 6 includes a tank body 61 and a lid 62 . Among them, the tank 61 is used to hold the sample, it is fixedly connected with the fourth sprocket 526, and the cylinder 49 is fixed on its side wall; the cover 62 is covered on the tank 61, which is fixedly connected with the cylinder 49, , so that the cover 62 is opened and closed.

The control system is a PLC control system, which is electrically connected to the cylinder 49 , the tank feeding motor 511 , the first electromagnetic clutch 512 , the tank lifting motor 521 and the second electromagnetic clutch 522 , respectively.

The method for using the radioactive suspended matter and sediment sampling device in the storage tank includes the following steps:

S1. According to the position of the sampling port of the radioactive storage tank, push the moving support base 1 to the position of the sampling port, and turn on the power of the control system;

S2. After confirming that the extraction tank 6 is located above the sampling port and the lid 62 of the extraction tank 6 is well closed with the tank body 61, rotate the slewing bearing 2 so that the coiling mechanism 4 and the tank moving mechanism 5 on the support block 39 are located in the sampling position. above the mouth

S3. Set the sampling position on the PLC control system. The PLC control system turns on the tank feeding motor 511 and the first electromagnetic clutch 512, drives the second sprocket 516 and the third sprocket 517 to rotate, and drives the fourth sprocket 526 and 517 through the transmission chain. The first sprocket 48 rotates to make the air pipe 47 and the chain 410 descend at the same time. After the extraction tank 6 descends to the sampling position, the PLC control system controls the tank feeding motor 511 and the first electromagnetic clutch 512 to stop working, and the intake port 43 takes in the air. , the PLC control system controls the cylinder 49 to open the lid 62 and hold the sample;

S4. After the sample is filled, the PLC control system controls the cylinder 49 to close the lid 62, and at the same time, the intake port 43 stops air intake, and the exhaust port 44 starts to exhaust, and the lifting position is set on the PLC control system, and the PLC control system controls the tank feeding The motor 511 and the first electromagnetic clutch 512 stop working, the second electromagnetic clutch 522 and the tank lift motor 521 start to work, the fourth sprocket 526 rotates, and the second sprocket 516 is driven to rotate through the transmission chain, and the second sprocket 516 passes through the second sprocket 516. The rotating shaft 513 drives the third sprocket 517 to rotate, and the third sprocket 517 drives the first sprocket 48 to rotate through the transmission chain, so that the air pipe 47 and the chain 410 are rolled back, and the lifting tank 6 is driven to rise;

S5. After the extraction tank 6 rises to the designated position, the operator removes the extraction tank 6 and moves it into a shielded transfer container for storage, and the sampling is completed.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention. If the technical problem is still consistent with the present invention, it should be included within the protection scope of the present invention.

Claims (10)

1. A device for sampling radioactive suspended matter and sediment in a storage tank, characterized in that it comprises a mobile support base (1), a slewing bearing (2) mounted on the mobile support base (1), mounted on the The displacement mechanism (3) on the slewing bearing (2), the coiling mechanism (4) and the tank body moving mechanism (5) respectively installed on the displacement mechanism (3), through the tank body moving mechanism (5) A lifting tank (6) driven and connected to a tube rolling mechanism (4), and a control system electrically connected to the tank body moving mechanism (5) and the tube rolling mechanism (4), respectively, wherein the rolling tube The mechanism (4) is used to control the opening and closing of the extraction tank (6). 2. A device for sampling radioactive suspended matter and sediment in a storage tank according to claim 1, wherein the displacement mechanism (3) comprises a base (31) mounted on the slewing bearing (2) ), a fixed sleeve (32) fixed on the base (31), one end of which is sleeved with a lead screw (33) in the fixed sleeve (32), fixed on the base (31) and used The first bearing (34) supporting the other end of the screw rod (33) is fixed to the end of the fixing sleeve (32) away from the first bearing (34) and used for supporting the screw rod (33). Two bearings (35), a hand wheel (36) located on the side of the second bearing (35) and coaxially connected to the lead screw (33), and a lead screw sleeve (37) threadedly connected to the lead screw (33) ), a rack (38) located on the base (31) and fixedly connected to the screw sleeve (37), a support block (39) fixedly connected to the screw sleeve (37), and a support block (39) fixed to the screw sleeve (37) A support (310) on the base (31) and slidably connected with the support block (39), wherein the tank body moving mechanism (5) and the tube rolling mechanism (4) are respectively installed on the support block (39), so The rack (38) is meshed with the screw rod (33), and the coiling mechanism (4) and the tank body moving mechanism (5) are respectively mounted on the support block (39). 3. A device for sampling radioactive suspended matter and sediment in a storage tank according to claim 2, wherein the coiling mechanism (4) comprises two symmetrically arranged on the support block (39) A support frame (41), a first rotating shaft (42) which is mounted on the support frame (41) through a bearing and has a hollow interior, is arranged on the first rotating shaft (42) and is connected with the first rotating shaft (42) ) The air inlet port (43) and the exhaust port (44) communicated inside, the air pipe roller (45) and the chain roller (46), which are sleeved on the first rotating shaft (42) adjacently, are wound around the The air pipe (47) on the air pipe drum (45), the chain (410) wound on the chain drum (46), the first sprocket (48) sleeved on one end of the first rotating shaft (42), and a cylinder (49) connected to the air pipe (47) and installed on the extraction tank (6), wherein the two ends of the first rotating shaft (42) are respectively connected to the external air intake pipe and the exhaust pipe, so The air pipe (47) is respectively connected with the intake port (43) and the exhaust port (44), the cylinder (49) is electrically connected with the control system, the air pipe (47), the chain (410) and the first chain The wheel (48) is connected with the tank body moving mechanism (5). 4. A device for sampling radioactive suspended matter and sediment in a storage tank according to claim 3, characterized in that the tank body moving mechanism (5) comprises a drive air pipe (47) to move and is installed on a support block (39) ) on the tank feeding mechanism (51), and a tank lifting mechanism (52) mounted on the support block (39), wherein the first sprocket (48) is connected with the tank lifting mechanism (52). 5. A device for sampling radioactive suspended solids and sediments in a storage tank according to claim 4, wherein the tank feeding mechanism (51) comprises a tank feeding motor (511) installed on the support block (39) ), a first electromagnetic clutch (512) coaxially connected to the can feeding motor (511), and a second rotating shaft (513) coaxially connected to the first electromagnetic clutch (512), arranged on the support Two bearing seats (514) on the block (39) and used to support the second rotating shaft (513), sleeved on the second rotating shaft (513) and located between the two bearing seats (514) Two second sprockets (516), a shaft cover (515) fixed on the bearing seat (514), and a shaft cover (515) sleeved on the second rotation shaft (513) and located outside the shaft cover (515) The third sprocket (517), wherein the third sprocket (517) and the first sprocket (48) are driven by a transmission chain, and the second sprocket (516) and the tank lifting mechanism (52) are driven by transmission chain connection, the shaft cover (515) is provided with an opening for accommodating the transmission chain to pass through the second sprocket (516), the tank feeding motor (511) and the first electromagnetic clutch (512) are respectively connected with The control system is electrically connected. 6 . The device for sampling radioactive suspended matter and sediment in a storage tank according to claim 5 , wherein the can lifting mechanism ( 52 ) comprises a can lifting motor ( 521 ) installed in the support block ( 39 ). 7 . ), a second electromagnetic clutch (522) coaxially connected to the can lift motor (521), and a third rotating shaft (523) coaxially connected to the second electromagnetic clutch (522), fixed on the Two reeling drums (524) on the three rotating shafts (523), a third bearing (525) mounted on the end of the third rotating shaft (523), and a third bearing (525) located in the reeling drum (524) and sleeved the fourth sprocket (526) connected to the third rotating shaft (523), wherein the chain (410) and the air pipe (47) are fixed to the lifting tank (6) around the third rotating shaft (523) connected, the fourth sprocket (526) and the second sprocket (516) are connected through a transmission chain, and the tank lift motor (521) and the second electromagnetic clutch (522) are respectively electrically connected to the control system. 7 . The device for sampling radioactive suspended matter and sediment in a storage tank according to claim 6 , wherein the control system is a PLC control system. 8 . 8 . The device for sampling radioactive suspended matter and sediment in a storage tank according to claim 1 , wherein the rotation angle of the slewing bearing ( 2 ) is 140°. 9 . 9. The radioactive suspended matter and sediment sampling device in a storage tank according to claim 6, wherein the extraction tank (6) comprises a tank body (61) fixedly connected with the chain (410), A cover (62) is covered on the tank body (61) and opened and closed by a cylinder (49), wherein the cylinder (49) is fixed on the tank body (61). 10. The method for using a radioactive suspended matter and sediment sampling device in a storage tank according to claim 1, characterized in that, comprising the steps of: S1. According to the position of the sampling port of the radioactive storage tank, push the moving support base (1) to the position of the sampling port, and turn on the power supply of the control system; S2. Make sure that the extraction tank (6) is located above the sampling port, and after the extraction tank (6) is well closed, make the rotary bearing (2) rotate, and at the same time control the displacement mechanism (3) to move the position, so that the coiling mechanism (4) and the tank body moving mechanism (5) is located above the sampling port; S3, set the sampling position on the control system, control the tank moving mechanism (5) to lower the extraction tank (6) to the sampling position, and control the coiling mechanism (4) to open the extraction tank (6) for sample loading; S4. After the loading of the extracting tank (3) is completed, a lifting position is set on the control system, the control system controls the coiling mechanism (4) to close the extracting tank (6), and controls the tank moving mechanism (5) to drive the extracting Tank (6) rises; S5. After the extraction tank (6) rises to the designated position, the operator removes the extraction tank (6) and moves it into a shielded transfer container for storage, and the sampling is completed.

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