Two-stage gas-entrapping proportion-adjustable gas-liquid mixing nozzle device and use method
A technology of gas-liquid mixing and nozzle device, which is applied in the direction of earthwork drilling, discharge machinery, cutting machinery, etc., can solve the problems of low erosion efficiency, non-adjustable gas-liquid ratio, jet atomization, etc., and achieve erosion efficiency Improved effect
Active Publication Date: 2021-07-30
NANTONG UNIVERSITY
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Problems solved by technology
[0004] The present invention provides a two-stage gas-filling adjustable ratio gas-liquid mixing nozzle device and its use method, which solves the problems of severe atomization, low erosion efficiency and non-adjustable gas-liquid ratio of conventional gas-liquid two-phase water jets pointed out in the background technology. problem, it can effectively improve the efficiency of jet rock breaking
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[0047]The present invention is described in further detail now in conjunction with accompanying drawing. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "left side", "right side", "upper", "lower" are based on the orientations or positional relationships shown in the drawings, and are only For the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, "first", "second" and the like do not represent components importance, and therefore should not be construed as limiting the invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.
[0048] In the mining of coal seam gas in the prior art, ...
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The invention relates to a two-stage gas-entrapping proportion-adjustable gas-liquid mixing nozzle device and a using method. The device comprises a nozzle assembly, a valve body assembly and a piston assembly, wherein the nozzle assembly comprises a nozzle seat and a nozzle, the valve body assembly comprises a valve body, a spring, a gland, a lead screw and a valve element, the piston assembly comprises a piston cylinder, high-pressure gas is introduced into the device through a gas pipe connector of the nozzle seat, pure water jet flow is changed into gas-liquid mixed bubble flow or slug flow by introducing high-pressure water into a water inlet connector of a piston cylinder, secondary gas adding is achieved through the high-pressure gas based on the nozzle seat, the jet flow erosion capacity is improved, meanwhile, the pressing degree of the spring is changed by adjusting the lead screw, so that the overflowing annular space between the valve element and the valve body is controlled, and the purposes of controlling the water inlet flow and adjusting the gas-liquid proportion are achieved. The problems that conventional gas-liquid two-phase water jet atomization is serious, the erosion efficiency is low and the gas-liquid proportion cannot be adjusted are solved, and the jet rock breaking efficiency can be effectively improved according to different working conditions.
Description
technical field [0001] The invention relates to a two-stage gas-filling adjustable ratio gas-liquid mixing nozzle device and a use method thereof, which belong to the technical field of high-pressure water jet engineering. Background technique [0002] The distribution of mineral resources in my country shows a state of more coal and less oil. Therefore, coal, as one of the important energy sources supporting economic development, has a huge demand. With the wide application of high-pressure water jets, it has gradually evolved into a hot field in coal seam gas mining. . In recent years, with the research and application of new high-pressure jet technologies such as abrasive jet, cavitation jet, pulse jet, self-excited oscillation jet and gas-liquid two-phase jet, the efficiency of coal mining has been greatly improved. [0003] However, the above-mentioned new high-pressure jet technology has more or less problems such as serious abrasive wear and damage, limited target dis...
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Login to View More IPC IPC(8): E21C37/06E21C35/00
CPCE21C37/06E21C35/00
Inventor 张华朱钱威高鹏
Owner NANTONG UNIVERSITY