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

Abstract

The present invention discloses a device for sampling radioactive suspended matter and sediment in a storage tank, comprising a movable support seat, a slewing bearing mounted on the movable support seat, a shifting mechanism mounted on the slewing bearing, a tube reeling mechanism and a tank moving mechanism respectively mounted on the shifting mechanism, a lifting tank driven by the tank moving mechanism and connected to the tube reeling mechanism, and a control system respectively driven by the tank moving mechanism and electrically connected to the tube reeling mechanism, wherein the tube reeling mechanism is used to control the opening and closing of the lifting tank. The present invention can move the movable support seat 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 positions of the tank moving mechanism and the tube reeling mechanism can be moved by controlling the shifting mechanism, thereby taking out samples at different positions on the same plane in the radioactive waste liquid storage tank.

Description

Technical Field

[0001] The invention relates to the field of nuclear facility decommissioning and management, and in particular to a device for sampling radioactive suspended matter and sediment in a storage tank and a method for using the device. Background Art

[0002] During the decommissioning process of nuclear facility storage tanks, radioactive materials of different densities are stored in different locations in the storage tanks. Most of these materials have a certain fluidity, which may be mud, mud, or uncompacted resin and radioactive waste liquid and other radioactive materials with a certain fluidity. Due to the long storage time, they are deposited in a multi-layered state. When conducting research on radioactive waste treatment technology and designing decommissioning plans for radioactive waste liquid storage tanks, it is necessary to sample and analyze the waste in the radioactive waste liquid storage tank at different depths to accurately obtain the source information of the waste in the radioactive waste liquid storage tank.

[0003] Due to the early construction time of some nuclear facilities in my country and the imperfect information system, a complete and perfect special supporting system for sampling suspended matter and sediment in radioactive waste liquid storage tanks has not been established during the design, construction and maintenance of radioactive waste liquid storage tanks. At present, high, medium and low radioactive waste liquids in radioactive waste liquid storage tanks are equipped with special radioactive waste liquid sampling systems, but none of them considers the sampling of suspended matter and sediment in the storage tanks, and the radioactive waste liquid sampling system cannot be applied to the sampling of radioactive suspended matter and sediment. Since the radioactivity level of low-level radioactive waste liquid storage tanks is low, the degree of radiation damage to personnel is relatively small. The existing method of sampling radioactive sediment in the tank is that personnel use simple tools to insert into the bottom of the radioactive waste liquid storage tank through the manhole of the radioactive waste liquid storage tank, carry the radioactive sediment at the bottom and collect it in the sampling bottle. This method is difficult to carry out the sampling of suspended matter and sediment in the radioactive waste liquid storage tank, the collected radioactive suspended matter and sediment samples are not representative, and it is impossible to extract samples at different depths in the radioactive waste liquid storage tank. The distribution of suspended matter and sediment in the radioactive waste liquid storage tank cannot be accurately determined. Therefore, it is extremely important to design a new sampling system for suspended matter and sediment in radioactive waste storage tanks, which can solve the problems of inaccurate stratified sampling, poor solid-liquid separation, large amount of radioactive waste, poor safety and difficulty in controlling the amount of radioactive exposure to operators that occur in the sampling process of other sampling devices. Summary of the invention

[0004] In order to overcome the problems existing in the prior art, the present invention provides a device for sampling radioactive suspended matter and sediment in a storage tank, which can realize sampling at different positions in a radioactive waste liquid storage tank.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A device for sampling radioactive suspended matter and sediment in a storage tank comprises a movable support seat, a slewing bearing mounted on the movable support seat, a shifting mechanism mounted on the slewing bearing, a pipe reeling mechanism and a tank moving mechanism respectively mounted on the shifting mechanism, a lifting tank driven by the tank moving mechanism and connected to the pipe reeling mechanism, and a control system respectively driven by the tank moving mechanism and electrically connected to the pipe reeling mechanism, wherein the pipe reeling mechanism is used to control the opening and closing of the lifting tank.

[0007] Furthermore, the shift mechanism includes a base installed on the rotary bearing, a fixed sleeve fixed on the base, a screw with one end sleeved in the fixed sleeve, a first bearing fixed on the base and used to support the other end of the screw, a second bearing fixed to the fixed sleeve at one end away from the first bearing and used to support the screw, a handwheel located on the side of the second bearing and coaxially connected to the screw, a screw sleeve threadedly connected to the screw, a rack located on the base and fixedly connected to the screw sleeve, a support block fixedly connected to the screw sleeve, and a support member fixed on the base and slidably connected to the support block, wherein the tank body moving mechanism driving and the tube winding mechanism are respectively installed on the support block, the rack is meshed with the screw, and the tube winding mechanism and the tank body moving mechanism are respectively installed on the support block.

[0008] Specifically, the tube winding mechanism includes two support frames symmetrically arranged on the support block, a first rotating shaft which is installed on the support frames through bearings and is hollow inside, an air intake interface and an exhaust interface which are arranged on the first rotating shaft and are connected to the inside of the first rotating shaft, an air pipe roller and a chain roller which are adjacently sleeved on the first rotating shaft, an air pipe wound on the air pipe roller, a chain wound on the chain roller, a first sprocket sleeved on one end of the first rotating shaft, and a cylinder connected to the air pipe and installed on the lifting tank, wherein the two ends of the first rotating shaft are respectively connected to the external air intake pipe and exhaust pipe, the air pipe is respectively connected to the air intake interface and the exhaust interface, the cylinder is electrically connected to the control system, and the air pipe, chain and first sprocket are connected to the tank moving mechanism.

[0009] Specifically, the tank moving mechanism includes a tank conveying mechanism that drives the air pipe to move and is installed on the support block, and a tank lifting mechanism installed on the support block, wherein the first sprocket is connected to the tank lifting mechanism.

[0010] Specifically, the tank delivery mechanism includes a tank delivery motor installed on a support block, a first electromagnetic clutch coaxially connected to the tank delivery motor, a second rotating shaft coaxially connected to the first electromagnetic clutch, two bearing seats arranged on the support block and used to support the second rotating shaft, two second sprockets sleeved on the second rotating shaft and located between the two bearing seats, a shaft cover fixed on the bearing seat, and a third sprocket sleeved on the second rotating shaft and located outside the shaft cover, wherein the third sprocket is driven by the first sprocket through a transmission chain, 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 passing through the second sprocket sleeved on the second sprocket, and the tank delivery motor and the first electromagnetic clutch are electrically connected to the control system respectively.

[0011] 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, 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 sprocket located in the chain drum and sleeved on the third rotating shaft, wherein the chain and the air pipe are both fixedly connected to the lifting tank by bypassing the third rotating shaft, the fourth sprocket is connected to the second sprocket through a transmission chain, and the tank lifting motor and the second electromagnetic clutch are electrically connected to the control system respectively.

[0012] Specifically, the control system is a PLC control system.

[0013] Furthermore, the slewing angle of the slewing bearing is 140°.

[0014] Specifically, the lifting tank includes a tank body fixedly connected to a chain, and a lid covered on the tank body and opened and closed by a cylinder, wherein the cylinder is fixed on the tank body.

[0015] The present invention also provides a method for using a device for sampling radioactive suspended matter and sediment in a storage tank, comprising the following steps:

[0016] S1. According to the position of the sampling port of the radioactive storage tank, push the mobile support seat to the sampling port position and turn on the power of the control system;

[0017] S2. After confirming that the lifting tank is located above the sampling port and the lifting tank is well closed, the slewing bearing is rotated, and the shifting mechanism is controlled to move the position so that the tube winding mechanism and the tank body moving mechanism are located above the sampling port;

[0018] S3. Set the sampling position on the control system, control the tank moving mechanism to lower the lifting tank to the sampling position, and control the tube reel mechanism to open the lifting tank to load the sample;

[0019] S4. After the sample loading of the lifting tank is completed, the lifting position is set on the control system, and the control system controls the tube reel mechanism to close the lifting tank, and controls the tank moving mechanism to drive the lifting tank to rise;

[0020] S5. After the lifting tank rises to the designated position, the operator removes the lifting tank and moves it into the shielding transfer container for storage, and the sampling is completed.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The present invention can move the movable support seat 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 position of the tank moving mechanism and the tube reel mechanism can be moved by controlling the shifting mechanism, thereby taking out samples at different positions on the same plane in the radioactive waste liquid storage tank. Compared with the workers using simple tools to insert into the bottom of the radioactive waste liquid storage tank through the manhole of the radioactive waste liquid storage tank, 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, thereby ensuring the safety of sampling and making the amount of radioactive exposure to the operators controllable.

[0023] (2) The present invention can control the tank moving mechanism through a control system, specifically, control the tank lifting mechanism and the tank delivery mechanism to rotate in the forward and reverse directions, drive the air pipe and the chain to rise and fall, so as to achieve the purpose of sampling radioactive suspended matter and sediments at different heights, and can control the tube reel mechanism through the control system to realize the opening and closing of the lifting tank, specifically, control the opening and closing of the lid by controlling the operation of the cylinder, and then control the sampling of radioactive suspended matter and sediments at different heights of the tank, thereby improving the accuracy of sampling, sampling at different heights according to sampling requirements, and also improving the effect of solid-liquid separation.

[0024] (3) The sampling device of the present invention can be used not only for sampling suspended matter and sediment in low-level waste liquid storage tanks, but also for sampling suspended matter and sediment in medium- and high-level waste liquid storage tanks, as well as for sampling operations in the petrochemical field or other toxic and hazardous industries, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the shifting mechanism of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the pipe winding mechanism of the present invention.

[0028] Figure 4It is a structural schematic diagram of the can lifting mechanism of the present invention.

[0029] Figure 5 It is a structural schematic diagram of the can delivery mechanism of the present invention.

[0030] Figure 6 It is a partial enlarged view of the lifting tank of the present invention.

[0031] The names corresponding to the reference numerals are:

[0032] 1-mobile support seat, 2-slewing bearing, 3-shift mechanism, 4-pipe rolling mechanism, 5-tank moving mechanism, 6-lifting tank, 31-base, 32-fixed sleeve, 33-screw, 34-first bearing, 35-second bearing, 36-handwheel, 37-screw sleeve, 38-rack, 39-support block, 310-support member, 41-support frame, 42-first rotating shaft, 43-intake interface, 44-exhaust interface, 45-tracheal roller, 46-chain roller, 47-trachea, 4 8-first sprocket, 49-cylinder, 410-chain, 51-can delivery mechanism, 52-can lifting mechanism, 511-can delivery motor, 512-first electromagnetic clutch, 513-second rotating shaft, 514-bearing seat, 515-rotating shaft cover, 516-second sprocket, 517-third sprocket, 521-can lifting motor, 522-second electromagnetic clutch, 523-third rotating shaft, 524-chain drum, 525-third bearing, 526-fourth sprocket, 61-tank body, 62-lid. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The embodiments of the present invention include but are not limited to the following embodiments.

[0034] Example

[0035] like Figures 1 to 6 As shown, the radioactive suspended matter and sediment sampling device in the storage tank includes a mobile support seat 1, a slewing bearing 2, a shifting mechanism 3, a tube winding mechanism 4, a tank moving mechanism 5, a lifting tank 6 and a control system.

[0036] The mobile support seat 1 is used to support the shifting mechanism 3, the tube winding mechanism 4 and the tank moving mechanism 5. Four pulleys are installed at equal intervals on the bottom for movement on the ground, and two of the adjacent pulleys are equipped with brakes, so that the mobile support seat 1 can be fixed in position for easy sampling.

[0037] The slewing bearing 2 is mounted on the movable support seat 1, and its rotation angle is 140°, so that the moving mechanism 3 located thereon can rotate along with the rotation of the slewing bearing 2, so as to facilitate the adjustment of the sampling position.

[0038] The shifting mechanism 3 is mounted on the slewing bearing 2 , and includes a base 31 , a fixed sleeve 32 , a screw 33 , a first bearing 34 , a second bearing 35 , a hand wheel 36 , a screw sleeve 37 , a rack 38 , a support block 39 and a support member 310 . Among them, the base 31 is fixed on the slewing bearing 2, which is used for support; the fixed sleeve 32 is fixed to 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, and the other end is supported by the first bearing 34, and the end connected to the second bearing 35 is coaxially connected to the hand wheel 36, and the screw rod 33 rotates with the rotation of the hand wheel 26; the first bearing 34 is vertically fixed to the base 31, which 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 when the hand wheel 36 rotates, the screw rod 33 is driven to rotate together; the screw rod sleeve 37 is sleeved on the screw rod 33, and it is threadedly connected to the screw rod 33, and when the screw rod 36 rotates, the screw rod sleeve 37 is sleeved on the screw rod 33. As the rod 33 rotates, the screw sleeve 37 moves back and forth, and is fixedly connected to the support block 39, so as to drive the support block 39 to move back and forth; the rack 38 is slidably installed on the base 31, and is fixedly connected to the screw sleeve 37 and meshes with the screw 33. As the screw 33 rotates, the rack 38 moves back and forth, and at the same time brings supporting force to the screw sleeve 37, so as to support the support block 39; the bottom of one end of the support block 39 is installed on the screw sleeve 37, and moves with the back and forth movement of the screw sleeve 37, and the bottom of the other end is slidably installed on the support member 310; the support member 310 supports the support block 39, and when the support block 39 moves back and forth, the support member 310 supports the support block 39 without affecting the movement of the support block 39.

[0039] The tube winding mechanism 4 includes a support frame 41 , a first rotating shaft 42 , an air inlet interface 43 , an air outlet interface 44 , an air tube roller 45 , a chain roller 46 , an air tube 47 , a first sprocket 48 , a cylinder 49 and a chain 410 . Among them, there are two support frames 41 and they are symmetrically arranged on the support block 39, which are used to support the two ends of the first rotating shaft 42; the first rotating shaft 42 is installed on the support frame 41 through a bearing, and its interior is hollow and its two ends are respectively connected to the external air intake pipe and exhaust pipe; the air intake interface 43 is arranged on the first rotating shaft 42 and is connected to the first rotating shaft 42, when the external air compressor transports the air into the first rotating shaft 42 through the air intake pipe, and then transports it to the air intake interface 43, and the air intake interface 43 transports the air to the air pipe 47 to provide power for the cylinder 49; the exhaust interface 44 is also arranged on the first rotating shaft 42 and is connected to the first rotating shaft 42, the external air compressor is turned off and the exhaust pipe is opened at the same time, so that the gas in the air pipe 47 is discharged, and between exhaust and intake, the cylinder 49 drives the cover 62 to complete an opening and closing; the air pipe roller 45 is sleeved on the first rotating shaft 42, and it is used to wind the air pipe 47; the chain roller 46 is also sleeved on the first rotating shaft 42, and is used to wind the chain When the lifting tank 6 needs to be lowered, the tank feeding motor 511 is started, and the second rotating shaft 513 is driven to rotate through the first electromagnetic clutch 512, and then the second sprocket 516 and the third sprocket 517 are driven to rotate, and then the first sprocket 48 and the fourth sprocket 526 are driven to rotate through the transmission chain, and then the first rotating shaft 42 and the third rotating shaft 523 are driven to rotate, and the air pipe roller 45 and the chain roller 46 rotate in the opposite direction, and the air pipe 47 and the chain 410 are transported downward, so that the lifting tank 6 is lowered. Down; one end of the air pipe 47 is respectively connected to the air inlet interface 43 and the exhaust interface 44, and the other end thereof is connected to the cylinder 49, for transmitting the gas to the cylinder 49; the first sprocket 48 is sleeved on the first rotating shaft 42, and it is transmitted to the third sprocket 517 through a transmission chain, 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 to the cover 62, and it is electrically connected to the control system, and drives the cover 62 to open and close under the control of the control system.

[0040] The tank moving mechanism 5 includes a tank delivery mechanism 51 and a tank lifting mechanism 52. The tank delivery mechanism 51 is used to drive the air pipe 47 and the chain 410 to transport downward, and lower the lifting tank 6 to load the sample, and it 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 to rewind, and drive the lifting tank 6 to rise.

[0041] 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 . Among them, the tank sending 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 electrically connected to the second rotating shaft 513 and the control system, which drives the second rotating shaft 513 to rotate and stop; the second rotating shaft 513 is driven by the tank sending motor 511, and a second sprocket 516 is sleeved on it; there are two bearing seats 514 and they are connected to the second rotating shaft 513 through bearings, which are used to support and stabilize the second rotating shaft 513; the two ends of the shaft cover 515 are fixed on the two bearing seats 514, and an opening is opened on it to accommodate the passage of the transmission chain, so that the transmission chain is sleeved on the second sprocket 516; there are two second sprockets 516 and they are symmetrically distributed in the shaft cover 515, and they are connected to the fourth The sprocket 526 is driven by a transmission chain; the third sprocket 517 is sleeved on the end of the second rotating shaft 513 and is driven by the first sprocket 48 through 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 to rotate, and then driving 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. When the third rotating shaft 523 rotates, the second electromagnetic clutch 522 stops working, so that the third rotating shaft 523 can rotate with the fourth sprocket 526, and the air pipe roller 45 and the chain roller 46 rotate in the opposite direction, and the air pipe 47 and the chain 410 are transported downward, so that the lifting tank 6 is lowered.

[0042] The can lifting mechanism 52 includes a can lifting motor 521, a second electromagnetic clutch 522, a third rotating shaft 523, a chain reel 524, a third bearing 525 and a fourth sprocket 526. The can lifting motor 521 is installed on the support block 39 and is electrically connected to the control system. It 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 electrically connected to the control system, which drives the third rotating shaft 523 to rotate. When the second electromagnetic clutch 522 is working, the first electromagnetic clutch 512 is in a stopped state. When the first electromagnetic clutch 512 is working, the second electromagnetic clutch 522 is in a stopped state. The third rotating shaft 523 is used to bypass the chain 410 and the air pipe 47. There are two chain reels 524, which are fixed to the third rotating shaft. On the driving shaft 523, a fourth sprocket 526 is installed in the two chain winding drums 524; the fourth sprocket 526 is connected to the second sprocket 516 through a transmission chain, so that the two rotate in the same direction. When it is necessary to lift the can, the can lifting motor 521 and the second electromagnetic clutch 522 can be turned on, and the can delivery motor 511 and the first electromagnetic clutch 512 can be turned off, so as to drive the third rotating shaft 523 to rotate, and then drive the fourth sprocket 526 to rotate, drive the second sprocket 516 to rotate, make the third sprocket 517 rotate, drive the first sprocket 48 to rotate, make the tube winding mechanism 4 rotate accordingly, rewind the chain 410 and the air pipe 47, and drive the lifting can 6 to move upward.

[0043] The sample tank 6 includes a tank body 61 and a cover 62. The tank body 61 is used to hold samples and is fixedly connected to the fourth sprocket 526. The cylinder 49 is fixed to the side wall of the tank body 61. The cover 62 is covered on the tank body 61 and is fixedly connected to the cylinder 49. The cover 62 is opened and closed under the action of the cylinder 49.

[0044] The control system is a PLC control system, which is electrically connected to the cylinder 49, the tank delivery motor 511, the first electromagnetic clutch 512, the tank lifting motor 521 and the second electromagnetic clutch 522 respectively.

[0045] The method for using the radioactive suspended matter and sediment sampling device in a storage tank comprises the following steps:

[0046] S1. According to the position of the sampling port of the radioactive storage tank, push the mobile support base 1 to the sampling port position and turn on the power of the control system;

[0047] S2. After confirming that the extraction tank 6 is located above the sampling port and the cover 62 of the extraction tank 6 is well closed with the tank body 61, the slewing bearing 2 is rotated so that the tube reeling mechanism 4 on the support block 39 and the tank body moving mechanism 5 are located above the sampling port;

[0048] S3. Set the sampling position on the PLC control system. The PLC control system starts 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 the first sprocket 48 to rotate through the transmission chain, so that the air pipe 47 and the chain 410 descend at the same time. After the lifting 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 air inlet interface 43 intakes air. The PLC control system controls the cylinder 49 to open the lid 62 to hold the sample;

[0049] S4, after the sample is loaded, the PLC control system controls the cylinder 49 to close the lid 62, and at the same time the air intake interface 43 stops intake, and the exhaust interface 44 starts exhausting, and the lifting position is set on the PLC control system. The PLC control system controls the tank delivery motor 511 and the first electromagnetic clutch 512 to stop working, and the second electromagnetic clutch 522 and the tank lifting motor 521 to start working, and the fourth sprocket 526 rotates, and drives the second sprocket 516 to rotate through the transmission chain, and the second sprocket 516 drives the third sprocket 517 to rotate through the second rotating shaft 513, 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 rewound, and the lifting tank 6 is driven to rise;

[0050] S5. After the lifting tank 6 rises to the designated position, the operator removes the lifting tank 6 and moves it into the shielding transfer container for storage, and the sampling is completed.

[0051] The above embodiment is only one of the preferred implementation modes of the present invention and should not be used to limit the protection scope of the present invention. Any changes or modifications that are made to the main design concept and spirit of the present invention and have no substantive significance, and the technical problems they solve are still consistent with the present invention, should be included in the protection scope of the present invention.

Claims

1. A device for sampling radioactive suspended matter and sediment in a storage tank, characterized in that: The invention comprises a movable support seat (1), a slewing bearing (2) mounted on the movable support seat (1), a displacement mechanism (3) mounted on the slewing bearing (2), a pipe reeling mechanism (4) and a tank moving mechanism (5) respectively mounted on the displacement mechanism (3), a lifting tank (6) driven by the tank moving mechanism (5) and connected to the pipe reeling mechanism (4), and a control system respectively electrically connected to the tank moving mechanism (5) and the pipe reeling mechanism (4), wherein the pipe reeling mechanism (4) is used to control the opening and closing of the lifting tank (6); four pulleys are evenly spaced at the bottom of the movable support seat (1); The shifting mechanism (3) comprises a base (31) mounted on the slewing bearing (2), a fixed sleeve (32) fixed on the base (31), a screw rod (33) with one end sleeved in the fixed sleeve (32), a first bearing (34) fixed on the base (31) and used to support the other end of the screw rod (33), a second bearing (35) fixed on the end of the fixed sleeve (32) away from the first bearing (34) and used to support the screw rod (33), a hand wheel (36) located on the side of the second bearing (35) and coaxially connected to the screw rod (33), and a a screw sleeve (37) threadedly connected to the 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 member (310) fixed to the base (31) and slidably connected to the support block (39), wherein the tank moving mechanism (5) and the tube winding mechanism (4) are respectively mounted on the support block (39), the rack (38) is meshed with the screw (33), and the tube winding mechanism (4) and the tank moving mechanism (5) are respectively mounted on the support block (39); The tube reel mechanism (4) comprises two support frames (41) symmetrically arranged on the support block (39), a first rotating shaft (42) which is mounted on the support frame (41) via a bearing and is hollow inside, an air inlet interface (43) and an air outlet interface (44) which are arranged on the first rotating shaft (42) and are in communication with the inside of the first rotating shaft (42), an air tube roller (45) and a chain roller (46) which are adjacently sleeved on the first rotating shaft (42), an air tube (47) wound around the air tube roller (45), and an air tube (48) wound around the chain roller (49). 6), a 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 lifting tank (6), wherein the two ends of the first rotating shaft (42) are respectively connected to an external air intake pipe and an exhaust pipe, the air pipe (47) is respectively connected to an air intake interface (43) and an exhaust interface (44), the cylinder (49) is electrically connected to a control system, and the air pipe (47), the chain (410) and the first sprocket (48) are connected to a tank moving mechanism (5); The tank moving mechanism (5) comprises a tank conveying mechanism (51) installed on a support block (39) for driving an air pipe (47) to move, and a tank lifting mechanism (52) installed on the support block (39), wherein the first sprocket (48) is connected to the tank lifting mechanism (52); the tank conveying mechanism (51) comprises a tank conveying motor (511) installed on the support block (39), a first electromagnetic clutch (512) coaxially connected to the tank conveying motor (511), and a second rotating shaft (513) coaxially connected to the first electromagnetic clutch (512), and a second rotating shaft (513) arranged on the support block (39). The support block (39) includes two bearing seats (514) for supporting the second rotating shaft (513), two second sprockets (516) sleeved on the second rotating shaft (513) and located between the two bearing seats (514), a rotating shaft cover (515) fixed on the bearing seats (514), and a third sprocket (517) sleeved on the second rotating shaft (513) and located outside the rotating shaft cover (515), wherein the third sprocket (517) and the first sprocket (48) are driven by a transmission chain, and the second sprocket (516) and the can lifting mechanism ( The can lifting mechanism (52) is connected by a transmission chain, the rotating shaft cover (515) is provided with an opening for accommodating the transmission chain to pass through the second sprocket (516), the can delivery motor (511) and the first electromagnetic clutch (512) are respectively electrically connected to the control system; the can lifting mechanism (52) comprises a can lifting motor (521) installed in the support block (39), a second electromagnetic clutch (522) coaxially connected to the can lifting motor (521), a third rotating shaft (523) coaxially connected to the second electromagnetic clutch (522), and a third rotating shaft (523) fixed to the third rotating shaft (52 3), two chain drums (524) on the third rotating shaft (523), a third bearing (525) installed at the end of the third rotating shaft (523), and a fourth sprocket (526) located in the chain drum (524) and sleeved on the third rotating shaft (523), wherein the chain (410) and the air pipe (47) are both bypassed around the third rotating shaft (523) and fixedly connected to the lifting tank (6), the fourth sprocket (526) is connected to the second sprocket (516) through a transmission chain, and the lifting tank motor (521) and the second electromagnetic clutch (522) are respectively electrically connected to the control system.

2. The device for sampling radioactive suspended matter and sediment in a storage tank according to claim 1, characterized in that: The control system is a PLC control system.

3. A device for sampling radioactive suspended matter and sediment in a storage tank according to claim 2, characterized in that: The slewing angle of the slewing bearing (2) is 140°.

4. A device for sampling radioactive suspended matter and sediment in a storage tank according to claim 1, 2 or 3, characterized in that: The lifting tank (6) comprises a tank body (61) fixedly connected to a chain (410), and a lid (62) covering the tank body (61) and opened and closed by a cylinder (49), wherein the cylinder (49) is fixed to the tank body (61).

5. The method for using the device for sampling radioactive suspended matter and sediment in a storage tank according to claim 4, characterized in that: The steps include: S1. According to the position of the sampling port of the radioactive storage tank, the movable support base (1) is pushed to the sampling port position, and the power supply of the control system is turned on; S2. After confirming that the lifting tank (6) is located above the sampling port and the lifting tank (6) is well closed, the slewing bearing (2) is rotated, and at the same time, the shifting mechanism (3) is controlled to move its position so that the tube winding mechanism (4) and the tank body moving mechanism (5) are located above the sampling port; S3, setting a sampling position on the control system, controlling the tank moving mechanism (5) to lower the lifting tank (6) to the sampling position, and controlling the tube reel mechanism (4) to open the lifting tank (6) to load the sample; S4. After the loading of the lifting tank (6) is completed, the lifting position is set on the control system, and the control system controls the tube reel mechanism (4) to close the lifting tank (6), and controls the tank moving mechanism (5) to drive the lifting tank (6) to rise; S5. After the lifting tank (6) rises to the designated height, the operator removes the lifting tank (6) and moves it into the shielding transfer container for storage, and the sampling is completed.

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