Pressurized coring tool
A tool and coring technology, applied in the direction of extracting undisturbed core devices, earthwork drilling and mining, etc., can solve the problems of easy broken cores
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Embodiment 1
[0049] A pressurized coring tool, including an upper joint 1, a hexagonal rod 2, a hexagonal sleeve 3, an outer cylinder short 11, an outer cylinder 13, a differential short 15, an inner cylinder assembly 14, a core bit 17, and a hexagonal sleeve 3 Connect the outer cylinder 13 with the outer cylinder short 11, the outer cylinder 13 is connected with the difference short 15, and the difference short 15 is connected with the core bit 17, and also includes a pressure bearing device, a rotating assembly 12 and a core claw combination piece 16.
[0050] The specific description of the pressure-bearing device among the present invention is as follows:
[0051] The pressure-bearing device includes a pressure-bearing assembly and a pin component. The pressure-bearing assembly includes a pressure-bearing piston 7 and a pressure-bearing sleeve 9 sleeved on the pressure-bearing piston 7. The pin component includes a shear pin 8. The pressure-bearing piston 7 The upper end is limited by...
Embodiment 2
[0072] The present invention is described in further detail below:
[0073]The pressure-bearing piston is arranged in the middle section of the pressurized coring tool, and a sand discharge hole 18 and a flow channel 19 are arranged at the front end of the pressure-bearing piston 7, and four flow channels 19 are arranged at the front end of the pressure-bearing piston 7, and the flow channel 19 is a groove shape, and three sand discharge holes 18 are arranged on the circumference of the pressure-bearing piston 7 at the rear end of the flow channel 19; the upper end of the pressure-bearing piston 7 is blocked by the pressure-bearing steel ball 6 in the pressure joint 5 of the coring tool , the upper end of the pressure joint 5 is a hexagonal rod 2, and a rubber seal 4 is arranged between the hexagonal rod 2 and the pressure joint 5; the hexagonal rod 2, the pressure joint 5 and the seal rubber 4 are arranged in the hexagonal sleeve 3 The upper end of the hexagonal rod 2 is conn...
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