Improved central jet pump based on ring jet technology
A center jet technology, applied in the field of jet pumps, can solve problems such as increasing the contact surface, shortening the length of the throat, and greatly affecting the operation performance of the jet pump, achieving the effect of process realization, easy process processing, and wide application prospects
Active Publication Date: 2021-02-19
SICHUAN UNIV
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Problems solved by technology
Practice has shown that: the use of pulse jet pumps can improve the efficiency of jet pumps, but the pulse device system needs to be added; the use of multi-nozzles can increase the contact surface between the working fluid and the liquid being sucked and shorten the length of the throat, thereby improving the efficiency of the jet pump. However, the multi-nozzle structure has a greater impact on the performance of the jet pump
The above improved technologies and structural forms can promote the efficiency of the jet pump, but they do not improve the cavitation problem of the jet pump under the limit flow ratio condition.
Method used
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[0031] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0032] Such as figure 1 As shown, the conventional central jet pump in the prior art includes a working water pipe 1, a central nozzle 2, a suction chamber 4, a water suction pipe 3, a throat inlet section 5, a throat pipe 6, a diffuser pipe 7 and a water outlet pipe 8, and the working water pipe 1 It is connected with the central nozzle 2, and the central nozzle 2 is installed in the suction chamber 4. One end of the suction chamber 4 is connected with a water suction pipe 3, and the other end of the suction chamber 4 is connected with a throat inlet section 5, a throat pipe 6, a diffuser pipe 7 and an outlet pipe in sequence. water pipe8. When it works, the contact surface acting on the liquid to be absorbed is the cylindrical surface of...
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The invention discloses an improved central jet pump based on a ring jet technology, and relates to the technical field of jet pumps. A combined pipe sleeve device is arranged on the basis of an existing central jet pump structure, and comprises an annular sleeve, a working water pipe branch pipe, a water suction pipe branch pipe, a flow adjusting valve, a control valve A, a control valve B and acheck valve. When the improved central jet pump is used and the jet pump runs under the working condition of a small flow ratio, working liquid can be automatically controlled by the control valve A to be carried in a throat pipe from the outer side to be sucked, the rolling suction capacity is improved, the backflow phenomenon is improved, and efficiency is improved; and when the jet pump runs under the working condition of a large flow ratio, the sucked liquid can be automatically supplemented into the throat pipe through the control valve B, the pressure in the throat pipe is improved, thenegative pressure is reduced, cavitation flow under the limiting working condition is improved, and therefore the running performance of the central jet pump is improved.
Description
technical field [0001] The invention relates to the technical field of jet pumps, in particular to an improved center jet pump based on ring jet technology. Background technique [0002] The jet pump is a kind of fluid machinery that uses high-speed fluid as the working power to realize the suction, mixing and delivery of low-speed fluid through the viscous friction between fluids. The jet pump itself has no moving parts, and has a series of unique advantages such as simple structure, low cost, convenient installation and maintenance, good sealing performance, and reliable operation. Therefore, jet pumps are widely used in various fields of national economic production such as agriculture, animal husbandry and fishery, water conservancy, electric power, transportation, petroleum and geological exploration, especially for special occasions such as underwater, high temperature, high pressure, radiation and corrosion. Generate huge economic and social benefits. [0003] The s...
Claims
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Login to View More IPC IPC(8): F04F5/10F04F5/46F04F5/48
CPCF04F5/10F04F5/46F04F5/48
Inventor 陈云良华有明徐永党晓强刘旻
Owner SICHUAN UNIV