Device for draining water from vacuum environment to normal pressure environment

Abstract

The invention belongs to the technical field of free jet ground simulation tests, and particularly relates to a device capable of draining water from an environment with pressure lower than atmospheric pressure to an atmospheric pressure environment. According to the technical scheme, the device for draining the water from a vacuum environment to a normal pressure environment comprises upper drain pipes (2), a liquid level switch (4), an upper drain valve (5), a vent valve (7) and lower drain pipes (9), the upper drain pipes (2) enable a vacuum tank (1), an upper drain flange (3) and a drain tank (6) to be connected, the liquid level switch (4) and the upper drain valve (5) are arranged on the upper drain pipes (2), the vent valve (7) is arranged on the drain tank (6), and the lower drain pipes (9) enable the drain tank (6), a lower drain flange (8) and a lower drain valve (10) to be connected. According to the device for draining the water from the vacuum environment to the normal pressure environment, the principle that water flows downwards is utilized, the fact that water in the vacuum environment is drained into the normal pressure environment is achieved, and the device for draining the water from the vacuum environment to the normal pressure environment has the advantages of being simple in structure, low in operation cost and capable of adapting work demands well.

Description

technical field [0001] The invention belongs to the technical field of free-jet ground simulation tests, and in particular relates to a device capable of discharging water in an environment lower than atmospheric pressure into an atmospheric pressure environment. Background technique [0002] The vacuum system is a system for ejecting exhaust in the test area and simulating the high-altitude environment. It first reduces the pressure of the vacuum tank by suction to reach the vacuum degree required for the test. During the test, the connection conversion valve between the vacuum tank and the test bench is opened, and the pressure of the high-altitude cabin of the test bench is reduced to a certain pressure. After the main nozzle of the test bench works, Using the absorption function of the vacuum tank, the test airflow discharged from the test bench and the spray cooling water used to cool down the airflow are introduced into the vacuum container, and kept within a certain p...

AI Technical Summary

Problems solved by technology

After the test, although the pressure in the tank has increased and cannot meet the test requirements, the pressure is still lower than the atmospheric pressure. There is a large amount of cooling water sprayed into the tank group system. If it is not eliminated, it will greatly affect the suction and reduce the vacuum again. The efficiency of the tank pressure also reduces the life of the suction pump set

Images