Water jet source apparatus with constant pressure

Abstract

The invention discloses a water jet source apparatus with constant pressure. The apparatus comprises a water pump guide pipe, a guiding gutter, a guiding pipe, an overflow pipe, a current stabilizing grid, a water storage tank and an overflow groove, and is characterized in that one end of the water pump guide pipe is connected with a submersible pump, the other end of the water pump guide pipe is connected with the guiding gutter, the guiding gutter is connected with the guiding pipe and the overflow pipe, one end of the guiding pipe is connected with the guiding gutter, the other end of the guiding pipe is connected with the water storage tank, the outer side of the water storage tank is connected with the overflow groove, and water in the overflow groove flows to the submersible pump. According to water jet source apparatus with the constant pressure, by means of a water level difference between the water storage tank and a jet nozzle, jet pressure is generated due to the effect of gravity, additional vibration and noise are not caused, the pressure is constant, and the water jet source apparatus is suitable for a jet source in an underwater jet research process.

Description

technical field [0001] The invention relates to a water jet source device with constant pressure, which belongs to the field of acoustic measurement. Background technique [0002] Underwater jet noise is the radiation noise generated by the interaction of high-speed water when it is sharply mixed with still water. It is turbulent noise. In order to evaluate the radiation ability of jet noise generated by different nozzles, it is required that the pressure of the jet source be kept constant during the process of jet flow. At present, there are mainly three types of jet sources commonly used: one is to use a pressure tank to inflate and pressurize the water storage container, and use a pipeline to connect the water in the container to the nozzle to form an underwater jet; the other is to use a plunger to The pump combined with the energy storage device directly sends water to the nozzle through the pipeline to form an underwater jet; the third is to use the water tank placed a...

AI Technical Summary

Problems solved by technology

[0002] Underwater jet noise is the radiation noise generated by the interaction of high-speed water when it is sharply mixed with still water. It is turbulent noise. In order to evaluate the radiation ability of jet noise generated by different nozzles, it is required that the pressure of the jet source be kept constant during the process of jet flow. At present, there are mainly three types of jet sources commonly used: one is to use a pressure tank to inflate and pressurize the water storage container, and use a pipeline to connect the water in the container to the nozzle to form an underwater jet; the other is to use a plunger to The pump combined with the energy storage device directly sends water to the nozzle through the pipeline to form an underwater jet; the third is to use the water tank placed at a certain height to connect the water to the nozzle at a lower position through the pipeline, and use the water level between the water tank and the nozzle to Poor, the pressure formed by the gravity of water realizes the underwater jet; but there are still the following deficiencies in the process of use: one is to use the pressure tank to inflate and pressurize the water storage container to realize the underwater jet, due to the pressure of the air The volume compression coefficient is much larger than that of water. When the water in the water storage container is continuously sprayed out, the process of increasing the volume of air in the container to compensate for the decrease of water is a dynamic equilibrium process, which causes the pressure at the nozzle to change, resulting in unstable jet velocity; The second is the underwater jet realized by the plunger pump combined with the energy storage device. Although it can eliminate the pressure pulsation effect of the plunger pump during use, the plunger pump is easily affected by the voltage fluctuation of the power grid during operation, causing the flow rate at the nozzle to change. Changes, and due to the large flow resistance caused by the small nozzle, the plunger pump is often unbearable and easy to damage the plunger pump; the third is to use the underwater jet realized by the high water tank. When the water level in the water tank gradually decreases, making The pressure at the nozzle is also decreasing, causing the velocity of the jet to be unstable

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