Double-chamber external connected type full-pressure suction and exhaust valve based on pressure distribution principle and application method thereof

Abstract

The invention relates to a double-chamber external connected type full-pressure suction and exhaust valve based on a pressure distribution principle and an application method thereof and belongs to the technical field of pipeline safety protection. The double-chamber external connected type full-pressure suction and exhaust valve comprises a main valve chamber, a main valve piston, a big floating ball, a main valve air-guide slot, a cylinder, a guide valve, a small floating ball, a guide valve air-guide slot and a pressure distribution mechanism, wherein the main valve piston, the big floating ball and the main valve air-guide slot are arranged in the main valve chamber; the cylinder is arranged on the upper part of the main valve piston; the guide valve is arranged on the outer side of the main valve chamber; the small floating ball and the guide valve air-guide slot are arranged in the guide valve; the pressure distribution mechanism is arranged on the upper part of the guide valve. On the basis of the pressure distribution principle, the guide valve is arranged on the outer side of the main valve chamber; the guide valve is composed of a guide valve chamber and the pressure distribution mechanism; a pressure distribution valve clack is driven to move up and down by the floating of the small floating ball in the guide valve, so that the automatic regulation and distribution for the flow direction of the airflow can be realized, the main valve piston is further driven to act, the big floating ball in the main valve chamber is pushed to automatically return to the original position, the next section of air is drained and the continuous air exhausting under the inter-phase working condition of air column is realized. The invention also discloses an application method for the device. The design is scientific; the principle is simple; the processing is convenient; the suction and exhaust effects are excellent.

Description

technical field [0001] The invention relates to an intake and exhaust valve and an application method thereof, in particular to a dual-chamber out-connected full-pressure intake and exhaust valve based on the principle of pressure distribution and an application method thereof, belonging to the technical field of pipeline safety protection. Background technique [0002] In large-scale irrigation projects or long-distance water transmission projects, the impact of pressure water flow on trapped air mass and the interruption and re-bridging of water hammer are the key points of pipeline system safety protection. Gas accumulation in pipelines will reduce pipeline flow and pump efficiency, and affect the flow rate. Accurate measurement, and more importantly, when the pipeline is not exhausted smoothly, a huge pressure shock will occur, and even the pipeline will rupture, resulting in huge economic losses. It is known that 80% of the pipe burst phenomenon is related to the gas con...

AI Technical Summary

Problems solved by technology

The exhaust port of the trace intake and exhaust valve has a small diameter, which can only be used for trace exhaust when the pipeline is working normally, and cannot discharge a large amount of gas generated during the initial operation, maintenance or other working conditions of the system

The high-speed intake and exhaust valves and composite intake and exhaust valves can discharge a large amount of gas generated under the above-mentioned working conditions, but when encountering the working conditions of the gas columns and phases, after the first stage of gas is discharged, the floating ball under the large exhaust port Due to the action of the air support, the exhaust will not be opened again, so the exhaust cannot be continuously performed

The cylinder-type intake and exhaust valve uses the principle of the cylinder to overcome the problem that the floating ball cannot be automatically opened and exhausted due to the action of the air support, but it still has serious water leakage, easy wear of pins, levers and other components, and low service life.

And it has extremely high requirements on the production process in the actual production process, and the production is extremely difficult

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