Drill rod connection sealing device and drill rods
A technology for sealing devices and drill pipes, applied in the direction of drill pipes, drill pipes, drilling equipment, etc., can solve problems such as poor sealing effect, achieve the effects of improving service life, reducing corrosion, and ensuring sealing effect
Inactive Publication Date: 2019-08-20
周兆弟
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Problems solved by technology
[0004] The first purpose of the present invention is to provide a drill pipe connection sealing device to alleviate the technical problem of poor sealing effect in the prior art
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[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention relates to the technical field of pile drivers, in particular to a drill rod connection sealing device and drill rods. The inner wall of a liquid storage sealing sleeve is provided witha first annular liquid storage groove, the first annular liquid storage groove surrounds the outer wall of the inner-layer drill rod, and liquid is injected into the first annular liquid storage groove. Clay or mud on the outer wall of the inner-layer drill rod can make contact with the liquid in the first annular liquid storage groove when the inner-layer drill rod is retracted or extended into the outer-layer drill rod, most of the clay and the mud are dissolved in the liquid in the first annular liquid storage groove, the problem that clay and mud are too much and abrade the liquid storagesealing sleeve is voided, the sealing effect of the liquid storage sealing sleeve is guaranteed, meanwhile, the corrosion of clay and mud on the inner-layer drill rod to the inner-layer drill rod is reduced, and the service life of the inner-layer drill rod is prolonged. The drill rods have the advantages compared with the prior art.
Description
technical field [0001] The invention relates to the technical field of pile drivers, in particular to a drill pipe connection sealing device and a drill pipe. Background technique [0002] Existing drilling rigs have multi-stage drill rods, and seals are arranged between the drill rods for sealing. Usually only one level of seal is set, which can block most of the mud, etc., but there will still be some clay or mud sticking to the outer wall of the inner drill pipe. The process will cause wear and tear on the seal, damage the seal, and reduce the sealing effect of the seal; secondly, the clay or mud sticking to the outer wall of the inner drill pipe will also corrode the inner drill pipe and reduce the service life of the inner drill pipe . [0003] Therefore, it is an important technical problem to be solved by those skilled in the art to provide a drill pipe connection sealing device with good sealing effect and a drill pipe. Contents of the invention [0004] The fir...
Claims
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IPC IPC(8): E21B17/04E21B17/10
CPCE21B17/04E21B17/1078
Inventor 周兆弟
Owner 周兆弟