Ejector device with adjustable nozzle cross-sectional area
A technology of nozzle section and ejector, which is applied in the field of ejector device, can solve the problems that the parameters of the outlet flow of the ejector cannot be adjusted, the working efficiency of the ejector decreases, and it cannot work normally, so as to reduce environmental pollution and resources Effects of waste, solving air lock phenomenon, and solving recycling problems
Inactive Publication Date: 2020-12-29
YANGTZE UNIVERSITY
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Problems solved by technology
The geometric structure of the traditional ejector is fixed, and the cross-sectional area of the nozzle has been determined at the beginning of the design, so the parameters of the outlet flow of the ejector cannot be adjusted
Under the designed working conditions, this type of ejector can achieve the highest working efficiency, but when the working conditions change, the working efficiency of the ejector will decrease, or even fail to work normally
Method used
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[0030] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
[0031] Such as figure 1 As shown, an ejector device with adjustable nozzle cross-sectional area includes an ejector housing 1, and a through drainage channel 2 is arranged in the ejector housing 1, and the drainage channel 2 includes sequentially connected The liquid inlet section 3, the variable cross-sectional area nozzle 8, the receiving chamber 5, the mixing chamber 6 and the diffusion chamber 7; the ejector housing 1 is also provided with a gas inlet section 4, and the gas inlet section 4 is connected to the receiving chamber 5 connected. The mixing chamber 6 is in the shape of...
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The invention provides an ejector device with an adjustable nozzle cross-sectional area. The ejector device comprises an ejector shell, wherein a drainage channel formed by a liquid inlet section, a variable cross-sectional area nozzle, a receiving chamber, a mixing chamber and a diffusion chamber which are sequentially connected is arranged in the ejector shell; a gas inlet section communicatingwith the receiving chamber is arranged on the ejector shell; the variable cross-sectional area nozzle comprises an annular nozzle shell I, an annular nozzle shell II, a gear ring and adjusting valves;the gear ring is arranged between the nozzle shell I and the nozzle shell II; the adjusting valves are arranged on the nozzle shell II; a plurality of adjusting valves are sequentially embedded in anend-to-end manner to form an annular structure; the annular structure is positioned in the drainage channel; each adjusting valve is fixedly connected with a linkage rod piece; the adjusting valves are connected with the gear ring through the linkage rod pieces; an adjusting knob is arranged outside the ejector shell; and the adjusting knob is connected with gear teeth of the gear ring through atoothed bar. According to the ejector device disclosed by the invention, the nozzle aperture of the ejector can be changed, so that the ejector can efficiently recover casing gas under different working conditions.
Description
technical field [0001] The invention relates to an ejector device, in particular to an ejector device with adjustable nozzle sectional area. Background technique [0002] In the field of oil and gas well development, there are many processes involving the transition of wellhead pressure from low pressure to high pressure and then to low pressure. Low-pressure gas wells cannot be effectively exported because the wellhead pressure is too low, and special equipment and a large amount of energy are required to meet the requirements of the production process; while high-pressure gas wells need to be throttled and depressurized before they can enter the export pipeline to avoid excessive pressure causing damage to the suction port of the oil pump. In actual production, the method of periodically releasing casing gas is generally used to reduce the wellhead pressure. This practice causes resource waste and environmental pollution. How to recover this part of the vented casing gas...
Claims
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IPC IPC(8): F04F5/04F04F5/46E21B43/12
CPCF04F5/04F04F5/461E21B43/121
Inventor 刘凯廖洲阳葛英杰钟浩张海燕
Owner YANGTZE UNIVERSITY