Clear water controlling device for high-energy mixer and high-energy mixer

Abstract

The invention relates to cementing equipment and mixing equipment for oil and gas field and provides a clear water controlling device for a high-energy mixer and the high-energy mixer. The clear water controlling device comprises a soleplate, a linear actuator, a hinge shaft, a rocking arm, a leading screw, a manual rocking handle, a thread spindle and a valve rod, and is characterized in that the soleplate is hinged with a mounting base of the linear actuator; the hinge shaft is inserted in a central shaft hole of the soleplate; one end of the leading screw is fixed on the hinge shaft; the central portion of the leading screw forms a sleeve joint with the thread spindle, which is inserted in a central hole of the rocking arm; the upper end of the rocking arm is hinged with the valve rod; the lower end of the rocking arm is hinged with a push rod of the linear actuator; a through hole is arranged at the junction of the thread spindle and the leading screw; and a pin is disposed inside the trough hole. According to the invention, automatic and accurate control of the valve rod feed can be conveniently realized such that the slurry mixing effect of the high-energy mixer is more excellent than that in the prior art and the high-energy mixer can be used in both automatic and manual modes.

Description

technical field [0001] The invention relates to a high-energy mixer for cementing equipment and mud-mixing equipment used in oil and gas fields, in particular to a high-energy mixer clear water control device and a high-energy mixer. Background technique [0002] In the process of cementing operations in oil and gas fields, there are strict requirements on the control of cement slurry density. As one of the core components of cementing equipment, the high-energy mixer is directly related to the cementing quality. The traditional single-variable high-energy mixer that uses manual valves to control the flow of clean water is completed by the operator adjusting the size of the valve. The flow of clean water can only be adjusted based on the experience and intuition of the operator, so it is difficult to ensure the density of the cement slurry. And because the fluctuation of cement slurry density may affect the quality of cementing, which in turn will affect the productivity of ...

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Problems solved by technology

[0003] At present, most of the clear water control mechanisms of double-variable high-energy mixers at home and abroad adopt a hydraulic drive method. For example, the high-energy mixer disclosed in Chinese patent CN 200620095469 belongs to this kind of double-variable mixer scheme. This type of control method uses a flow regulating plate structure to control the water volume. Although it has made great progress compared with manual control, there are still the following defects: First, due to the hydraulic drive mode, it is greatly affected by the ambient temperature and the instability of the hydraulic system, so it cannot achieve very precise control; There are many and complicated structural parts, the sealing surface of the clean water injection is easy to cause wear, and the number of wearing parts such as the mixer sealing ring is large, which brings inconvenience to daily maintenance and maintenance. In addition, the sealing surface is easy to freeze when it is used in winter. It is convenient for on-site operation and use; besides, when the driving mechanism fails, manual adjustment cannot achieve convenient and more accurate control

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