Thermal assembly device used for connecting aluminium alloy drill rod body with steel joint
An aluminum alloy and thermal assembly technology, which is applied in the direction of drill pipe, drill pipe, metal processing, etc., can solve the problems of joint damage, cannot completely avoid the problems of aluminum alloy and steel fastening, thread connection jamming, etc., and achieve the effect of reliable connection
Inactive Publication Date: 2014-03-19
JILIN UNIV
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Problems solved by technology
[0003] Generally, the method of applying a certain torque to the aluminum alloy drill pipe body and the steel joint is assembled. Although this method is widely used, it has its shortcomings. For example, when the aluminum alloy drill pipe and the steel joint move relatively along the thread at the same time, When a higher contact pressure is reached, the local aluminum alloy and steel fastening cannot be completely avoided
When there are many fastened places like this, the threaded connection may get stuck during assembly, and such joints will be damaged during later use
Method used
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Embodiment Construction
[0023] The present invention is composed of a steel joint heating mechanism 1, a feeding mechanism 2, a steel joint turning mechanism 3, a rod body clamping mechanism 4, an aluminum alloy drill pipe internal cooling mechanism 5, a steel joint external cooling mechanism 6, a parameter detection mechanism 7 and an experiment The platform consists of 8;
[0024] The induction heater 11 of the steel joint heating mechanism 1 is fixed on the sliding bracket 24, the induction heater 11 is connected with the induction coil 12, and the induction coil 12 is set on the steel joint 13, and the steel joint 13 can be heated. Take out the induction coil 12;
[0025] The handwheel 21 of described feeding mechanism 2 is connected on the leading screw 22 by thread, and the other end of leading screw 22 is fixed on the test bench by leading screw fixing plate 25, and leading screw 22 is connected with opening and closing nut 23, and opening and closing The top of the nut 23 is connected with t...
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The invention discloses a thermal assembly device used for connecting an aluminium alloy drill rod body with a steel joint. The thermal assembly device comprises a steel joint heating mechanism, a feeding mechanism, a steel joint rotation mechanism, a rod body clamping mechanism, an internal aluminium alloy drill rod body cooling mechanism, an external steel joint cooling mechanism, a parameter detection mechanism and an experiment bench. The thermal assembly device is adopted to assemble the aluminium alloy drill rod body and the steel joint. In thermal assembly, at first, the steel joint is heated to a certain temperature to be expanded, then screwed on the aluminium alloy drill rod body in the thermal state, and next cooled, and a certain pretightening force can be obtained at the threaded connection after cooling, so that the requirements of torque transmission and load bearing of the aluminium alloy drill rod are met. The thermal assembly device can be used on the same experiment bench, the thermal assembly is realized only through replacing different materials and sizes of drill rod bodies and joints, and the connection strength and the connection reliability of the drill rod body and the steel joint are improved.
Description
technical field [0001] The invention relates to a thermal assembly device for connecting an aluminum alloy drill rod body and a steel joint. Background technique [0002] Drill pipes are used in the drilling process of geological exploration, oil and gas, coal, metal mines and other exploration and development. As the drilling depth increases, the difficulty also increases, and the quality requirements for drill pipes are higher. Aluminum alloy drill pipe has the advantages of low density, high specific strength, and strong corrosion resistance. With the increase of drilling depth, its advantages become more obvious, but its wear resistance is low. In drilling operations, joints need to be frequently screwed Therefore, in actual use, the aluminum alloy drill pipe body and the steel joint are generally assembled to form a drill string, and the steel joint is used to withstand the unscrewing operation. Due to the differences in elastic modulus, thermal expansion coefficient,...
Claims
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IPC IPC(8): E21B19/16B23P11/02
Inventor 孙友宏毛建设王晓峰刘宝昌范晓鹏薛军高科郭威
Owner JILIN UNIV