5 results about "Nuclear waste storage" patented technology

This utility model discloses a welding fixture for manufacturing the wellhead of a nuclear waste storage well. It includes a base plate with mounting screws at its top. The connecting structure includes a first cylinder, a second cylinder, and a third cylinder, each with a first flange mounted on its outer side. A second fixing screw passes through the top of the second flange. This utility model uses a second flange mounted at the bottom of the first flange, with the first and second flanges engaging to sequentially assemble the cylinder and flange parts onto the fixture. Utilizing the positioning and limiting features on the fixture, and the stop on the flange's inner diameter, the spacing and parallelism of the flanges, the roundness of the cylinder, the coaxiality between cylinders, and the perpendicularity to surface A can be ensured. After assembly, the fixture is removed, and each weld is performed. The welds are then ground to meet non-destructive testing requirements, and the inner surface welds are ground smooth. This achieves the goal of facilitating stable assembly of the welding fixture for manufacturing the nuclear waste storage well head.

This utility model relates to the field of wellbore inspection tooling technology, and provides a precision inspection tooling for nuclear waste storage well manufacturing. It includes a base, a guide plate fixedly connected to the outer wall of the base, and a lifting mechanism fixedly connected to the outer wall of the base. The lifting mechanism includes a hydraulic rod fixedly installed on the top of the base, a movable plate fixedly connected to the output end of the hydraulic rod, a guide groove and a sliding groove inside the movable plate, and an L-shaped support rod movably connected inside the movable plate. A testing platform is fixedly connected to the top of the L-shaped support rod. This utility model, by activating the hydraulic rod, moves the movable plate, causing the L-shaped support rod to slide along the sliding groove, thus raising and lowering the testing platform fixedly connected to the top of the L-shaped support rod. This facilitates the adjustment of the wellbore height according to inspection requirements. The cooperation of the guide plate and the guide groove further enhances the stability of the testing platform's lifting and lowering.

This utility model relates to the field of nuclear waste storage well technology, and provides a manufacturing and welding fixture for a nuclear waste storage well shielding plug. The fixture includes a base, a first well opening at the top of the base, a second well opening above the first well opening, and a third well opening above the second well opening. A positioning structure is fixed to the top of the base inside the first well opening. This utility model incorporates an adjustment structure, allowing a first pressure ring and a second pressure ring to move outwards from the stud. Under the action of a first fixing nut and a second fixing nut, the first and second pressure rings can be fixed or disassembled with the stud. The action of a first flat washer and a second flat washer prevents loosening, thus enabling the assembly of storage wells of different lengths. This device facilitates height adjustment, thereby improving the applicability of the nuclear waste storage well shielding plug manufacturing and welding fixture in use.

This invention discloses a robot and method for grinding the walls of nuclear waste storage wells, belonging to the field of nuclear waste treatment technology. The device includes a three-axis truss mechanism and a grinding mechanism, connected by an adjustment mechanism. An electrical cabinet and a dust removal mechanism are installed on the three-axis truss mechanism. The method includes: 1. Preparatory work before grinding; 2. Determining the four walls of the nuclear waste storage well to be ground and installing the grinding robot; 3. Grinding the four walls of the nuclear waste storage well; 4. Determining the bottom surface of the nuclear waste storage well to be ground and installing the grinding robot; 5. Grinding the bottom surface of the nuclear waste storage well; 6. Removing the grinding robot. This invention replaces manual grinding operations in the well with an automated mechanism. Operators can remotely control the machine from outside the wellhead, completely avoiding the safety risks of falls, dust inhalation, and collisions associated with manual work in the confined space of deep wells, thus ensuring the occupational health and personal safety of construction workers.

This utility model relates to the field of well casing manufacturing technology, and provides a welding fixture for manufacturing nuclear waste storage well casings. The fixture includes a well casing body, on which an internal support structure is uniformly arranged. The internal support structure includes wedge-shaped blocks, an internal support plate, and connecting grooves. The wedge-shaped blocks are uniformly arranged on the inner wall of the well casing body, and connecting grooves are formed on the side of each wedge-shaped block away from the well casing body. By providing the internal support structure, the uniformly distributed wedge-shaped blocks closely contact the inner wall of the well casing body, ensuring that the well casing body maintains a standard circular shape during welding and avoiding roundness deviations. The interlocking connection between the internal support plate and the connecting grooves forms a rigid support, reducing vibration or deformation during welding and improving structural stability. The symmetrical distribution of the wedge-shaped blocks on both sides of the internal support plate facilitates quick installation and disassembly. This device enables the device to support the welding shape of the well casing body, improving the working efficiency of the welding fixture for manufacturing nuclear waste storage well casings during use.