A radioactive wastewater storage tank sampling device

Abstract

The present invention belongs to the technical field of radioactive wastewater detection, and specifically relates to a radioactive wastewater storage tank sampling device, comprising a support bracket (1) on which a straight rod type sampling rod (5) is installed, the sampling rod (5) can be lifted and lowered in the vertical direction, the support bracket (1) can drive the sampling rod (5) to move in the horizontal direction, and a rotary cutting tool (12) for sampling is also provided at the bottom end of the sampling rod (5). The mechanical part has a reasonable design structure, conforms to ergonomics, and is convenient for installation and operation. It is driven by a motor and is provided with a special control unit, which can realize remote control and reduce the radiation dose received by the operator. The control part of the present invention has protection functions such as remote start and stop, automatic power off in abnormal conditions, etc.; when encountering a stainless steel plate at the bottom of the wastewater tank, it can realize an alarm and automatically stop sampling to protect the stainless steel plate from being damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of radioactive wastewater detection and relates to a radioactive wastewater storage tank sampling device. Background Art

[0002] The traditional method of sampling radioactive wastewater is to use a piston sleeve to extract the air inside the sampling equipment to form a negative pressure, and then press the radioactive wastewater into the sampling container for sampling. However, this method is not suitable for sampling wastewater from research reactor (reactor) wastewater storage tanks, because in addition to a small amount of liquid, there is also some sludge in the research reactor wastewater storage tank that is not easy to extract, and the radioactivity level inside the research reactor wastewater tank is high, so personnel cannot take samples at close range. Therefore, it is necessary to design a device that is convenient for sampling and avoids radiation for the radioactive wastewater sampling operation of research reactor wastewater storage tanks. Summary of the invention

[0003] The purpose of the present invention is to provide a sampling device for on-site sampling of sludge samples in wastewater storage tanks of research reactors. The device can control the sampling mechanism to move up and down, left and right, front and back within a certain range through a control unit to achieve positioning; it is equipped with a camera tool and a lighting tool, and can transmit the image of the sampling position to a display device in real time.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is a radioactive wastewater storage tank sampling device, which includes a support bracket on which a straight rod-type sampling rod is installed. The sampling rod can move up and down in the vertical direction, and the support bracket can drive the sampling rod to move in the horizontal direction. A rotary cutting tool body for sampling is also provided at the bottom end of the sampling rod.

[0005] further,

[0006] The support bracket is welded by a rectangular tube and a steel plate; a Fomag wheel is installed at the bottom of the support bracket to realize the horizontal movement of the sampling rod, and the Fomag wheel can be locked when it is running; a safety guardrail, a sampling rod clamping and lifting mechanism, an automatic winding mechanism, an auxiliary guide mechanism and a self-locking hand-cranking mechanism are arranged on the support bracket;

[0007] The bottom end of the sampling rod is provided with the knife body energy supply mechanism, and the knife body energy supply mechanism includes an illumination lamp, a camera and a stepping motor;

[0008] The safety guardrail is arranged on the outer periphery of the support bracket, and the safety guardrail is welded from steel pipes, which can effectively ensure the safety of the operator;

[0009] The sampling rod clamping and lifting mechanism is located at the center of the support bracket, and is used to clamp the sampling rod and realize the lifting movement of the sampling rod. The bottom end of the sampling rod passes through the sampling rod clamping and lifting mechanism, and is arranged on the support bracket through the sampling rod clamping and lifting mechanism.

[0010] The auxiliary guide mechanism is located at the upper part of the support bracket and is used to guide the lifting movement of the sampling rod. The top end of the sampling rod can slide through the auxiliary guide mechanism.

[0011] The automatic winding mechanism is located on one side of the sampling rod clamping and lifting mechanism, and is used to cooperate with the curling and loosening of the related wires of the sampling rod clamping and lifting mechanism to assist in realizing the lifting movement of the sampling rod;

[0012] The self-locking hand-crank mechanism is located on the other side of the sampling rod clamping lifting mechanism, and is used to prevent the sampling rod from suddenly falling due to gravity during the lifting movement.

[0013] further,

[0014] The sampling rod clamping and lifting mechanism is composed of a lifting mechanism bracket, a first clamping roller, a bearing seat, a guide sleeve, a linear roller, a first positioning block, a guide block, a guide pin, a second positioning block, a compression spring, a locking top plate and a second clamping roller;

[0015] The lifting mechanism bracket is a plate-shaped structure, and the bottom end of the sampling rod passes through the opening of the bracket;

[0016] The first clamping roller is a fixed clamping roller, and the second clamping roller is a driven clamping roller; the first clamping roller and the second clamping roller are arranged oppositely on the lifting mechanism bracket, and the bottom end of the sampling rod passes between the first clamping roller and the second clamping roller;

[0017] The first clamping roller is arranged on the upper surface of the lifting mechanism bracket through one of the bearing seats;

[0018] The first positioning block is arranged on the upper surface of the lifting mechanism bracket, the positioning guide block is arranged on the first positioning block, the first positioning block is provided with a guide groove, and the positioning guide block slides in the guide groove;

[0019] The second clamping roller is mounted on the guide block through another bearing seat;

[0020] The locking top plate is arranged on the upper surface of the lifting mechanism bracket and is located on one side of the first positioning block;

[0021] The second positioning block is arranged on the guide block, one end of the guide pin is arranged on the locking top plate, and the other end is arranged on the second positioning block, and the compression spring is sleeved on the guide pin;

[0022] The bearing seat is used to fix the bearings connecting the first clamping roller and the second clamping roller to fix the first clamping roller and the second clamping roller;

[0023] The guide sleeve is installed between the bearing and the bearing seat, and the guide sleeve is embedded in the hole of the bearing seat to reduce the wear on the bearing;

[0024] The guide block is used to connect the second clamping roller and the locking top plate, and the guide block is slidably connected to the first positioning block;

[0025] The guide pin is used to connect the second positioning block and the locking top plate;

[0026] The second positioning block is used to position the compression spring;

[0027] The compression spring is used to control the mechanical movement of the second clamping roller, absorb vibration and impact energy, and help reset;

[0028] The locking top plate is used to limit the movement of the positioning compression spring;

[0029] The second clamping roller is used to cooperate with the first clamping roller to control the vertical lifting movement of the sampling rod;

[0030] The line-following roller is arranged on the lower surface of the lifting mechanism bracket, and is used to assist the automatic winding mechanism in winding the wire;

[0031] The lifting mechanism bracket is welded from a rectangular tube and a steel plate, and is stable, firm and does not deform during operation;

[0032] The first clamping roller is made of rubber and is used to control the movement of the sampling rod in the vertical direction;

[0033] During use, the first clamping roller and the second clamping roller clamp the sampling rod through the first positioning block, the guide block, the guide pin, the second positioning block, the compression spring and the locking top plate, and the self-locking hand-crank mechanism is connected through the bearings of the first clamping roller and the second clamping roller to control the forward and reverse rotation of the first clamping roller and the second clamping roller to drive the lifting movement of the sampling rod; under the action of the first positioning block, the guide block, the guide pin and the second positioning block, the force of the compression spring acts on the guide block along the guide direction, driving the second clamping roller and the first clamping roller to clamp the sampling rod; after clamping, tighten the bolts and nuts on the locking top plate to fix the clamping position.

[0034] further,

[0035] The self-locking hand-crank mechanism is composed of a self-locking mechanism bracket, a connecting sleeve, a transmission shaft, a bearing seat, a coupling and a display screen;

[0036] The self-locking mechanism bracket is arranged on the supporting bracket; the display screen and the bearing seat are arranged on the self-locking mechanism bracket;

[0037] The transmission shaft is passed through the bearing seat, one end of the transmission shaft is a coupling for connecting the bearing of the first clamping roller, and the other end of the transmission shaft is provided with a handle, and the rotation of the first clamping roller is realized through the handle, the transmission shaft and the coupling;

[0038] The connecting sleeve is a cylindrical sleeve made of rubber material, which is sleeved on the transmission shaft, and realizes a self-locking function through the friction between the rubber cylindrical sleeve and the transmission shaft;

[0039] The bearing seat is used to fix the transmission shaft;

[0040] The display screen monitors the sampling process by connecting to the camera;

[0041] The self-locking hand-crank mechanism can utilize the friction force of the connecting sleeve to control the transmission shaft; the transmission shaft indirectly controls the first clamping roller by controlling the coupling, and finally controls the sampling rod to prevent the sampling rod from suddenly falling due to gravity during the descent and ascent process.

[0042] further,

[0043] The cutter body energy supply mechanism also includes a sampling rod connecting plate, double-side vertical plates, a cable fixing plate, a rigid coupling and the rotary drilling cutter body;

[0044] The sampling rod connecting plate is connected to the bottom end of the sampling rod;

[0045] The double-side vertical plates are connected to the lower surface of the sampling rod connecting plate;

[0046] The stepper motor is arranged on the double-side vertical plates through a motor mounting bracket;

[0047] The stepper motor is connected to the rotary cutting cutter body through the rigid coupling;

[0048] The double-sided vertical plates are arranged on both sides of the stepping motor, and the lighting lamp, the camera and the cable fixing plate are arranged on the outer sides of the double-sided vertical plates;

[0049] The camera is electrically connected to the display screen;

[0050] The sampling rod connecting plate is used to connect the sampling rod and the rotary cutting cutter body;

[0051] The double-sided vertical plates are used to fix the cable fixing plate, the camera and the lighting lamp;

[0052] The cable fixing plate is used to fix the power cables of the stepping motor, the camera and the lighting lamp;

[0053] The stepper motor is used to provide power for the movement of the rotary drilling cutter body;

[0054] The rigid coupling is used to connect the stepping motor and the rotary cutting cutter body;

[0055] The camera is used to monitor the sampling process of the rotary cutting cutter body;

[0056] The illuminating lamp is used for illuminating the sampling process.

[0057] further,

[0058] The rotary drilling cutter body is composed of a fixed block, a butterfly nut, a rotary drilling cover plate, a cutter body, a cutter seat, a blade, a connecting block, a quick latch and a rotary drilling drill bit;

[0059] The upper end of the fixed block is connected to the rigid coupling, and the lower end is connected to the rotary drilling cover plate;

[0060] The butterfly nut is fixed on the rotary drilling cover plate;

[0061] The cutter body is a cylindrical structure and is rigidly hingedly connected to the rotary drilling cover plate through the butterfly nut;

[0062] The knife seat is fixed on the lower port of the knife body, and the blade is fixed inside the knife body;

[0063] The connecting block is located above the rotary drilling cover plate; the quick latch is fixed on the connecting block;

[0064] The fixing block is used to fix the quick latch and is connected to the rigid coupling via the quick latch;

[0065] The butterfly nut is used to connect the rotary drilling cover plate and the cutter body;

[0066] The rotary drilling cover plate cooperates with the knife body to realize the rapid removal of samples, and conveniently pour out the collected samples after sampling;

[0067] The interior of the knife body can be used to temporarily store the collected samples;

[0068] The knife holder is used to fix the knife blade, which can effectively prevent the collected sample from falling out;

[0069] The blade is used for scraping the sample;

[0070] The connecting block is used to fix the quick latch;

[0071] The quick latch is used to connect the rigid coupling to achieve quick replacement of the rotary cutter body;

[0072] The rotary drilling bit has a centering function during operation to prevent the sample from moving.

[0073] Furthermore, it also includes a control unit for controlling the camera, the lighting and the stepper motor, which can realize remote control and reduce the radiation dose received by the operator; the control unit has the functions of remote start and stop and automatic power-off protection under abnormal conditions; when encountering a stainless steel plate at the bottom of the wastewater tank, it can realize an alarm and automatically stop the sampling operation.

[0074] The beneficial effects of the present invention are:

[0075] The mechanical part is designed with reasonable structure, ergonomics and convenient installation and operation. It is driven by a motor and equipped with a special control unit to achieve remote control and reduce the radiation dose of operators. The control part has protection functions such as remote start and stop, automatic power off under abnormal conditions, etc. When encountering the stainless steel plate at the bottom of the wastewater tank, it can alarm and automatically stop sampling to protect the stainless steel plate from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] Figure 1 A schematic diagram of a radioactive wastewater storage tank sampling device according to a specific embodiment of the present invention;

[0077] Figure 2 A schematic diagram of the sampling rod clamping and lifting mechanism 3 in a specific embodiment of the present invention;

[0078] Figure 3 A schematic diagram of the structure of the self-locking hand-crank mechanism 9 in a specific embodiment of the present invention;

[0079] Figure 4 A schematic diagram of the blade energy supply mechanism in a specific embodiment of the present invention;

[0080] Figure 5 A schematic diagram of the rotary cutting tool body 12 in a specific embodiment of the present invention;

[0081] In the figure: 1-support bracket, 2-safety guardrail, 3-sampling rod clamping lifting mechanism, 4-automatic winding mechanism, 5-sampling rod, 6-auxiliary guide mechanism, 7-start and stop button box, 8-display screen, 9-self-locking hand-crank mechanism, 10-lighting lamp, 11-camera, 12-rotary cutting tool body, 13-lifting mechanism bracket, 14-first clamping roller (fixed clamping roller), 15-bearing seat, 16-guide sleeve, 17-line roller, 18-first positioning block (guide positioning block), 19-guide block, 20-guide pin, 21-first Second positioning block, 22-compression spring, 23-locking top plate, 24-second clamping roller (driven clamping roller), 25-self-locking mechanism bracket, 26-connecting sleeve, 27-transmission shaft, 28-bearing seat, 29-coupling, 30-sampling rod connecting plate, 31-double-side vertical plate, 32-cable fixing plate, 33-stepping motor, 34-rigid coupling, 35-fixing block, 36-butterfly nut, 37-rotary drilling cover plate, 38-knife body, 39-knife seat, 40-blade, 41-connecting block, 42-quick latch, 43-rotary drilling bit. DETAILED DESCRIPTION

[0082] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0083] The present invention provides a radioactive wastewater storage tank sampling device (such as Figure 1 As shown), it is used for on-site sampling of sludge samples in research reactor wastewater storage tanks, including a support bracket 1 with a straight rod type sampling rod 5 installed. The sampling rod 5 can be lifted and lowered in the vertical direction. The support bracket 1 can drive the sampling rod 5 to move in the horizontal direction (directions include front, back, left and right). A rotary cutting tool 12 for sampling is also provided at the bottom end of the sampling rod 5.

[0084] The support bracket 1 is welded from a rectangular tube and a steel plate, and is stable, firm and does not deform during operation; a Foma wheel is installed at the bottom of the support bracket 1 to realize the horizontal movement of the sampling rod 5, and the Foma wheel can be locked during operation; a safety guardrail 2, a sampling rod clamping and lifting mechanism 3, an automatic winding mechanism 4, an auxiliary guide mechanism 6 and a self-locking hand-cranking mechanism 9 are arranged on the support bracket 1;

[0085] The bottom end of the sampling rod 5 is provided with a knife body energy supply mechanism, and the knife body energy supply mechanism includes a camera 11;

[0086] The safety guardrail 2 is arranged on the outer periphery of the support bracket 1. The safety guardrail 2 is welded from steel pipes and can effectively ensure the safety of the operator;

[0087] The sampling rod clamping and lifting mechanism 3 is located at the center of the support bracket 1, and is used to clamp the sampling rod 5 and realize the lifting movement of the sampling rod 5. The bottom end of the sampling rod 5 passes through the sampling rod clamping and lifting mechanism 3, and is set on the support bracket 1 through the sampling rod clamping and lifting mechanism 3;

[0088] The auxiliary guide mechanism 6 is located at the upper part of the support bracket 1 and is used to guide the lifting movement of the sampling rod 5. The top end of the sampling rod 5 can slide through the auxiliary guide mechanism 6.

[0089] The automatic winding mechanism 4 is located on one side of the sampling rod clamping and lifting mechanism 3, and is used to cooperate with the curling and loosening of the relevant wires of the sampling rod clamping and lifting mechanism 3 to assist in realizing the lifting movement of the sampling rod 5;

[0090] The self-locking hand-crank mechanism 9 is located at the other side of the sampling rod clamping lifting mechanism 3, and is used to prevent the sampling rod 5 from suddenly falling due to the effect of gravity during the lifting movement.

[0091] like Figure 2 As shown, the sampling rod clamping and lifting mechanism 3 is composed of a lifting mechanism bracket 13, a first clamping roller 14, a bearing seat 15, a guide sleeve 16, a linear roller 17, a first positioning block 18, a guide block 19, a guide pin 20, a second positioning block 21, a compression spring 22, a locking top plate 23 and a second clamping roller 24;

[0092] The lifting mechanism bracket 13 is a plate-like structure, and the bottom end of the sampling rod 5 passes through the opening of the lifting mechanism bracket 13;

[0093] The first clamping roller 14 is a fixed clamping roller, and the second clamping roller 24 is a driven clamping roller; the first clamping roller 14 and the second clamping roller 24 are arranged on the lifting mechanism bracket 13 opposite to each other, and the bottom end of the sampling rod 5 passes through between the first clamping roller 14 and the second clamping roller 24;

[0094] The first clamping roller 14 is arranged on the upper surface of the lifting mechanism bracket 13 through a bearing seat 15;

[0095] The first positioning block 18 is arranged on the upper surface of the lifting mechanism bracket 13, and the positioning guide block 19 is arranged on the first positioning block 18. The first positioning block 18 is provided with a guide groove, and the positioning guide block 19 slides in the guide groove;

[0096] The second clamping roller 24 is mounted on the guide block 19 through another bearing seat 15;

[0097] The locking top plate 23 is disposed on the upper surface of the lifting mechanism bracket 13 and is located on one side of the first positioning block 18;

[0098] The second positioning block 21 is arranged on the guide block 19, one end of the guide pin 20 is arranged on the locking top plate 23, and the other end is arranged on the second positioning block 21, and the compression spring 22 is sleeved on the guide pin 20;

[0099] The bearing seat 15 is used to fix the bearings connecting the first clamping roller 14 and the second clamping roller 24 to fix the first clamping roller 14 and the second clamping roller 24;

[0100] The guide sleeve 16 is installed between the bearing and the bearing seat 15, and the guide sleeve 16 is embedded in the hole of the bearing seat 15 to reduce the wear on the bearing;

[0101] The guide block 19 is used to connect the second clamping roller 24 and the locking top plate 23, and the guide block 19 is slidably connected to the first positioning block 18;

[0102] The guide pin 20 is used to connect the second positioning block 21 and the locking top plate 23;

[0103] The second positioning block 21 is used to position the compression spring 22;

[0104] The compression spring 22 is used to control the mechanical movement of the second clamping roller 24, absorb vibration and impact energy, and help reset;

[0105] The locking top plate 23 is used to limit the movement of the positioning compression spring 22;

[0106] The second clamping roller 24 is used to cooperate with the first clamping roller 14 to control the vertical lifting movement of the sampling rod 5;

[0107] The wire following roller 17 is arranged on the lower surface of the lifting mechanism bracket 13, and is mainly used to assist the automatic wire winding mechanism 4 in winding the wire;

[0108] The lifting mechanism bracket 13 is welded from a rectangular tube and a steel plate, and is stable and firm without deformation during operation;

[0109] The first clamping roller 14 is made of rubber and is used to control the movement of the sampling rod 5 in the vertical direction;

[0110] During use, the first clamping roller 14 and the second clamping roller 24 clamp the sampling rod 5 through the first positioning block 18, the guide block 19, the guide pin 20, the second positioning block 21, the compression spring 22 and the locking top plate 23. The self-locking hand-crank mechanism 9 is connected through the bearings of the first clamping roller 14 and the second clamping roller 24 to control the forward and reverse rotation of the first clamping roller 14 and the second clamping roller 24, that is, the friction wheel, to drive the lifting movement of the sampling rod 5; under the action of the first positioning block 18, the guide block 19, the guide pin 20 and the second positioning block 21, the force of the compression spring 22 acts on the guide block 19 along the guide direction, driving the second clamping roller 24 and the first clamping roller 14 to clamp the sampling rod 5; after clamping, tighten the bolts and nuts on the locking top plate 23 to fix the clamping position.

[0111] like Figure 3 As shown, the self-locking hand-cranking mechanism 9 is mainly composed of a self-locking mechanism bracket 25, a connecting sleeve 26, a transmission shaft 27, a bearing seat 28, a coupling 29 and a display screen 8;

[0112] The self-locking mechanism bracket 25 is arranged on the supporting bracket 1; the display screen 8 and the bearing seat 28 are arranged on the self-locking mechanism bracket 25;

[0113] The transmission shaft 27 is passed through the bearing seat 28. One end of the transmission shaft 27 is a coupling 29 for connecting the bearing of the first clamping roller 14. The other end of the transmission shaft 27 is provided with a handle. The rotation of the first clamping roller 14 is realized through the handle, the transmission shaft 27 and the coupling 29.

[0114] The connecting sleeve 26 is a cylindrical sleeve made of rubber material, which is sleeved on the transmission shaft 27, and realizes a self-locking function through the friction between the rubber cylindrical sleeve and the transmission shaft 27;

[0115] The bearing seat 28 is used to fix the transmission shaft 27;

[0116] The display screen 8 monitors the sampling process by connecting to the camera 11, and transmits the image of the sampling position to the display screen 8 in real time;

[0117] The self-locking hand-crank mechanism 9 can utilize the friction force of the connecting sleeve 26 to control the transmission shaft 27; the transmission shaft 27 indirectly controls the first clamping roller 14 by controlling the coupling 29, and finally controls the sampling rod 5 to prevent the sampling rod 5 from suddenly falling due to gravity during the descent and ascent process.

[0118] like Figure 4 As shown, the cutter body energy supply mechanism is mainly composed of a sampling rod connecting plate 30, a double-side vertical plate 31, a cable fixing plate 32, a stepping motor 33, a rigid coupling 34, and an illuminating lamp 10, and also includes a rotary cutter body 12 and a camera 11;

[0119] The sampling rod connecting plate 30 is connected to the bottom end of the sampling rod 5;

[0120] The double-side vertical plates 31 are connected to the lower surface of the sampling rod connecting plate 30;

[0121] The stepper motor 33 is arranged on the double-side vertical plates 31 through a motor mounting bracket;

[0122] The stepper motor 33 is connected to the rotary cutter body 12 via a rigid coupling 34;

[0123] The double-sided vertical plates 31 are arranged on both sides of the stepping motor 33, and the lighting lamp 10, the camera 11 and the cable fixing plate 32 are arranged on the outer sides of the double-sided vertical plates 31;

[0124] The camera 11 is electrically connected to the display screen 8;

[0125] The sampling rod connecting plate 30 is used to connect the sampling rod 5 and the rotary cutting cutter body 12;

[0126] The double-sided vertical plates 31 are used to fix the cable fixing plate 32, the camera 11 and the lighting lamp 10;

[0127] The cable fixing plate 32 is used to fix the power cables of the stepping motor 33, the camera 11 and the lighting lamp 10;

[0128] The stepper motor 33 is used to provide power for the rotary cutter body 12 to move;

[0129] The rigid coupling 34 is used to connect the stepping motor 33 and the rotary cutting cutter body 12;

[0130] The camera 11 is used to monitor the sampling process of the rotary cutting cutter body 12;

[0131] The lighting lamp 10 is used to illuminate the sampling process, making it convenient for operators to check the working conditions.

[0132] like Figure 5 As shown, the rotary drilling cutter body 12 is mainly composed of a fixing block 35, a butterfly nut 36, a rotary drilling cover plate 37, a cutter body 38, a cutter seat 39, a blade 40, a connecting block 41, a quick latch 42 and a rotary drilling drill bit 43;

[0133] The upper end of the fixed block 35 is connected to the rigid coupling 34, and the lower end is connected to the rotary drilling cover plate 37;

[0134] The butterfly nut 36 is fixed on the rotary drilling cover plate 37;

[0135] The cutter body 38 is a cylindrical structure, and is rigidly hingedly connected to the rotary drilling cover plate 37 via a butterfly nut 36;

[0136] The knife seat 39 is fixed on the lower port of the knife body 38, and the blade 40 is fixed inside the knife body 38;

[0137] The connecting block 41 is located above the rotary excavation cover plate 37; the quick latch 42 is fixed on the connecting block 41;

[0138] The fixing block 35 is used to fix the quick latch 42 and is connected to the rigid coupling 34 through the quick latch 42;

[0139] The butterfly nut 36 is used to connect the rotary drilling cover plate 37 and the cutter body 38;

[0140] The rotary cover plate 37 cooperates with the cutter body 38 to realize the rapid removal of samples, and conveniently pour out the collected samples after sampling;

[0141] The interior of the blade body 38 can be used to temporarily store the collected samples;

[0142] The knife holder 39 is used to fix the knife blade 40, which can effectively prevent the collected sample from falling out;

[0143] The blade 40 is used for scraping the sludge sample;

[0144] The connecting block 41 is used to fix the quick latch 42;

[0145] The quick latch 42 is used to connect the rigid coupling 34 to achieve quick replacement of the rotary cutter body 12;

[0146] The rotary drill bit 43 has a centering function during operation to prevent the sample from moving. During operation, the rotary drill bit 43 is drilled into the ground, and after the position of the rotary cutter body 12 is fixed, the gear-shaped blade 40 is used to drill downward to obtain the sample, and the sample is screwed into the cutter body 38 for temporary storage.

[0147] The rotary excavator cover plate 37 is rigidly hingedly connected to the cutter body 38, and the rotary excavator cover plate 37 is locked on the cutter body 38 by a butterfly nut 36 and can rotate around the latch; after the sample retrieval is completed, the collected sample can be quickly taken out, which is convenient for pouring out the collected material after sampling; the quick latch 42 is arranged on the connecting block 41, which is convenient for rapid replacement of the rotary excavator cutter body 12; the knife seat 39 and the blade 40 are symmetrically arranged at the bottom of the cutter body 38, respectively, for scraping sludge samples and collecting them into the rotary excavator cutter body 12.

[0148] It also includes a control unit for controlling the camera 11, the lighting lamp 10 and the stepper motor 33, which can realize remote control and reduce the radiation dose received by the operator; the control unit has protection functions such as remote start and stop, and automatic power off under abnormal conditions; when encountering a stainless steel plate at the bottom of the wastewater tank (used to store radioactive wastewater), it can alarm and automatically stop the sampling operation.

[0149] The device described in the present invention is not limited to the embodiments described in the specific implementation manner. Those skilled in the art may derive other implementation manners based on the technical solution of the present invention, which also fall within the technical innovation scope of the present invention.

Claims

1. A radioactive wastewater storage tank sampling device, characterized in that: It comprises a support bracket (1) on which a straight-rod type sampling rod (5) is installed, the sampling rod (5) can move up and down in the vertical direction, the support bracket (1) can drive the sampling rod (5) to move in the horizontal direction, and a rotary cutting body (12) for sampling is also provided at the bottom end of the sampling rod (5); The support bracket (1) is welded from a rectangular tube and a steel plate; a Fomag wheel is installed at the bottom of the support bracket (1) to realize the horizontal movement of the sampling rod (5), and the Fomag wheel can be locked when in operation; the support bracket (1) is provided with a safety guardrail (2), a sampling rod clamping and lifting mechanism (3), an automatic winding mechanism (4), an auxiliary guide mechanism (6) and a self-locking hand-cranking mechanism (9); The sampling rod clamping and lifting mechanism (3) is composed of a lifting mechanism bracket (13), a first clamping roller (14), a bearing seat (15), a guide sleeve (16), a linear roller (17), a first positioning block (18), a guide block (19), a guide pin (20), a second positioning block (21), a compression spring (22), a locking top plate (23) and a second clamping roller (24); The lifting mechanism bracket (13) is a plate-shaped structure, and the bottom end of the sampling rod (5) passes through an opening of the lifting mechanism bracket (13); The first clamping roller (14) is a fixed clamping roller, and the second clamping roller (24) is a driven clamping roller; the first clamping roller (14) and the second clamping roller (24) are arranged opposite to each other on the lifting mechanism bracket (13), and the bottom end of the sampling rod (5) passes between the first clamping roller (14) and the second clamping roller (24); The first clamping roller (14) is arranged on the upper surface of the lifting mechanism bracket (13) via a bearing seat (15); The first positioning block (18) is arranged on the upper surface of the lifting mechanism bracket (13), the positioning guide block (19) is arranged on the first positioning block (18), the first positioning block (18) is provided with a guide groove, and the positioning guide block (19) slides in the guide groove; The second clamping roller (24) is mounted on the guide block (19) via another bearing seat (15); The locking top plate (23) is arranged on the upper surface of the lifting mechanism bracket (13) and is located on one side of the first positioning block (18); The second positioning block (21) is arranged on the guide block (19), one end of the guide pin (20) is arranged on the locking top plate (23), and the other end is arranged on the second positioning block (21), and the compression spring (22) is sleeved on the guide pin (20); The bearing seat (15) is used to fix the bearing connecting the first clamping roller (14) and the second clamping roller (24) so ​​as to fix the first clamping roller (14) and the second clamping roller (24); The guide sleeve (16) is installed between the bearing and the bearing seat (15), and the guide sleeve (16) is embedded in the hole of the bearing seat (15) to reduce wear on the bearing; The guide block (19) is used to connect the second clamping roller (24) and the locking top plate (23), and the guide block (19) is slidably connected to the first positioning block (18); The guide pin (20) is used to connect the second positioning block (21) and the locking top plate (23); The second positioning block (21) is used to position the compression spring (22); The compression spring (22) is used to control the mechanical movement of the second clamping roller (24), absorb vibration and impact energy, and help reset; The locking top plate (23) is used to limit the movement of the positioning compression spring (22); The second clamping roller (24) is used to cooperate with the first clamping roller (14) to control the vertical lifting movement of the sampling rod (5); The line-adjusting roller (17) is arranged on the lower surface of the lifting mechanism bracket (13) and is used to assist the automatic winding mechanism (4) in winding the wire; The lifting mechanism bracket (13) is welded from a rectangular tube and a steel plate, and is stable, firm and does not deform during operation; The first clamping roller (14) is made of rubber and is used to control the movement of the sampling rod (5) in the vertical direction.

2. A radioactive wastewater storage tank sampling device as claimed in claim 1, characterized in that: The bottom end of the sampling rod (5) is provided with the knife body energy supply mechanism, and the knife body energy supply mechanism includes an illumination lamp (10), a camera (11) and a stepping motor (33); The safety guardrail (2) is arranged on the outer periphery of the support bracket (1), and the safety guardrail (2) is welded from steel pipes, which can effectively ensure the safety of operators; The sampling rod clamping and lifting mechanism (3) is located at the center of the support bracket (1) and is used to clamp the sampling rod (5) and realize the lifting movement of the sampling rod (5). The bottom end of the sampling rod (5) passes through the sampling rod clamping and lifting mechanism (3) and is arranged on the support bracket (1) through the sampling rod clamping and lifting mechanism (3); The auxiliary guide mechanism (6) is located at the upper part of the support bracket (1) and is used to guide the lifting movement of the sampling rod (5). The top end of the sampling rod (5) can slide through the auxiliary guide mechanism (6); The automatic wire winding mechanism (4) is located on one side of the sampling rod clamping and lifting mechanism (3) and is used to cooperate with the curling and loosening of the relevant wires of the sampling rod clamping and lifting mechanism (3) to assist in realizing the lifting movement of the sampling rod (5); The self-locking hand-crank mechanism (9) is located on the other side of the sampling rod clamping lifting mechanism (3) and is used to prevent the sampling rod (5) from suddenly falling due to the effect of gravity during the lifting movement.

3. A radioactive wastewater storage tank sampling device as claimed in claim 2, characterized in that: The self-locking hand-cranking mechanism (9) is composed of a self-locking mechanism bracket (25), a connecting sleeve (26), a transmission shaft (27), a bearing seat (28), a coupling (29) and a display screen (8); The self-locking mechanism bracket (25) is arranged on the supporting bracket (1); the display screen (8) and the bearing seat (28) are arranged on the self-locking mechanism bracket (25); The transmission shaft (27) is passed through the bearing seat (28), one end of the transmission shaft (27) is a coupling (29) for connecting to the bearing of the first clamping roller (14), and the other end of the transmission shaft (27) is provided with a handle, and the rotation of the first clamping roller (14) is achieved through the handle, the transmission shaft (27) and the coupling (29); The connecting sleeve (26) is a cylindrical sleeve made of rubber material, which is sleeved on the transmission shaft (27) and realizes a self-locking function through the friction between the rubber cylindrical sleeve and the transmission shaft (27); The bearing seat (28) is used to fix the transmission shaft (27); The display screen (8) is connected to the camera (11) to monitor the sampling process; The self-locking hand-crank mechanism (9) can utilize the friction force of the connecting sleeve (26) to realize control of the transmission shaft (27); the transmission shaft (27) controls the first clamping roller (14) indirectly by controlling the coupling (29), thereby finally realizing control of the sampling rod (5), thereby preventing the sampling rod (5) from suddenly falling due to the effect of gravity during the descending and ascending process.

4. A radioactive wastewater storage tank sampling device as claimed in claim 3, characterized in that: The cutter body energy supply mechanism also includes a sampling rod connecting plate (30), double-side vertical plates (31), a cable fixing plate (32), a rigid coupling (34) and the rotary cutting cutter body (12); The sampling rod connecting plate (30) is connected to the bottom end of the sampling rod (5); The double-sided vertical plates (31) are connected to the lower surface of the sampling rod connecting plate (30); The stepping motor (33) is arranged on the double-side vertical plates (31) via a motor mounting bracket; The stepping motor (33) is connected to the rotary cutting cutter body (12) via the rigid coupling (34); The double-sided vertical plates (31) are arranged on both sides of the stepping motor (33), and the lighting lamp (10), the camera (11) and the cable fixing plate (32) are arranged on the outside of the double-sided vertical plates (31); The camera (11) is electrically connected to the display screen (8); The sampling rod connecting plate (30) is used to connect the sampling rod (5) and the rotary cutting tool body (12); The double-sided vertical plates (31) are used to fix the cable fixing plate (32), the camera (11) and the lighting lamp (10); The cable fixing plate (32) is used to fix the power cables of the stepping motor (33), the camera (11) and the lighting lamp (10); The stepping motor (33) is used to provide power for the rotary cutting cutter body (12) to move; The rigid coupling (34) is used to connect the stepping motor (33) and the rotary cutter body (12); The camera (11) is used to monitor the sampling process of the rotary cutting cutter body (12); The lighting lamp (10) is used for lighting during the sampling process.

5. A radioactive wastewater storage tank sampling device as claimed in claim 4, characterized in that: The rotary drilling cutter body (12) is composed of a fixing block (35), a butterfly nut (36), a rotary drilling cover plate (37), a cutter body (38), a cutter seat (39), a blade (40), a connecting block (41), a quick latch (42) and a rotary drilling drill bit (43); The upper end of the fixed block (35) is connected to the rigid coupling (34), and the lower end is connected to the rotary drilling cover plate (37); The butterfly nut (36) is fixed on the rotary drilling cover plate (37); The cutter body (38) is a cylindrical structure and is rigidly hingedly connected to the rotary drilling cover plate (37) via the butterfly nut (36); The knife seat (39) is fixed on the lower port of the knife body (38), and the blade (40) is fixed inside the knife body (38); The connecting block (41) is located above the rotary drilling cover plate (37); the quick latch (42) is fixed on the connecting block (41); The fixing block (35) is used to fix the quick latch (42), and is connected to the rigid coupling (34) via the quick latch (42); The butterfly nut (36) is used to connect the rotary drilling cover plate (37) and the cutter body (38); The rotary excavation cover plate (37) cooperates with the knife body (38) to realize the rapid removal of samples, and facilitates pouring out the collected samples after sampling; The interior of the blade body (38) can be used to temporarily store the collected samples; The blade holder (39) is used to fix the blade (40), and can effectively prevent the collected sample from falling out; The blade (40) is used for scraping the sample; The connecting block (41) is used to fix the quick latch (42); The quick latch (42) is used to connect the rigid coupling (34) to achieve quick replacement of the rotary cutter body (12); The rotary drilling bit (43) has a centering function during operation to prevent the sample from moving.

6. A radioactive wastewater storage tank sampling device as claimed in claim 5, characterized in that: It also includes a control unit for controlling the camera (11), the lighting lamp (10) and the stepping motor (33), which can realize remote control and reduce the radiation dose received by the operator; the control unit has the functions of remote start and stop and automatic power-off protection under abnormal conditions; and can realize an alarm and automatically stop the sampling operation when encountering a stainless steel plate at the bottom of the wastewater tank.

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