Water mist cooling drill bit
A water-mist cooling and water-mist nozzle technology, which is applied to drill bits, drilling equipment, earth-moving drilling, etc., can solve the problem of poor cooling effect of blade connection, and achieve the effect of significant cooling effect, reducing drilling cost and prolonging life.
Active Publication Date: 2019-10-15
TIANJIN LILIN BIT
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is: in the prior art, the problem that the cooling effect of the drilling fluid on the blade is not good
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[0024] In the following, the concept, specific structure and technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the drawings to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work belong to The scope of protection of the present invention. In addition, all the connection relations mentioned in the text do not only refer to the direct connection of the components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions. The various technical features in the invention can be combined interactively on the premise of not conflicting ...
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The invention discloses a water mist cooling drill bit. The water mist cooling drill bit comprises a blank body, the blank body is provided with tool wings, the tool wings and the blank body are integrally formed, and each tool wing is provided with an empty groove body with an upward opening; the water mist cooling drill bit further comprises cover plates, and the cover plates are arranged at theupper ends of the empty groove bodies and connected with the tool wings in a sealing manner; a main water channel and connecting channels are arranged in the blank body, and the inlet ends and the outlet ends of the connecting channels communicate with the main water channel and the empty groove bodies correspondingly; and the side walls of the tool wings are provided with secondary water holes,the secondary water holes communicate with the empty groove bodies, water mist sprayer heads are arranged in the empty groove bodies, and inlets and outlets of the water mist sprayer heads communicatewith the connecting channels and the empty groove bodies correspondingly. According to the PDC drill bit, the cooling effect is significant, the tool wings are directly cooled after drilling fluid forms mist, a very good protecting effect on polycrystalline diamond on the tool wings is achieved, the life of the polycrystalline diamond can be prolonged, and the drilling cost is reduced.
Description
Technical field [0001] The invention relates to the field of mechanical processing equipment, in particular to a water mist cooling drill bit. Background technique [0002] PDC drill bits, also known as polycrystalline diamond drill bits, are one of the commonly used drill bits in the petroleum drilling field. The PDC bit includes the embryo body, the blade, and the chip flute. The PDC bit uses the polycrystalline diamond chip on the blade as the cutting edge to cut the formation. A lot of heat is generated during the cutting process. Therefore, the highest heat on the PDC bit is Knife wing. Polycrystalline diamond has the characteristics of high hardness at room temperature, but after the temperature exceeds 380 degrees Celsius, its hardness begins to decrease, and high temperature easily destroys the molecular structure of polycrystalline diamond, resulting in PDC drill bit failure. [0003] The bottom of the embryo body of the PDC drill bit is provided with a water eye, and a ...
Claims
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IPC IPC(8): E21B10/60E21B10/61E21B10/54
CPCE21B10/54E21B10/60E21B10/61
Inventor 陈斌任振龙薛中学高磊刘振伟
Owner TIANJIN LILIN BIT