What is water ring vacuum pump auxiliary vacuum system -

in order to get better in the process of using water ring vacuum water pump pumping effect, must ensure that good vacuum conditions. When the equipment can not meet the conditions, but does not replace the equipment condition, can use the auxiliary vacuum system.

1, the function and composition of water ring vacuum pumps auxiliary vacuum system

for small volume, small deflated rate and leakage rate, specimens can be connected directly to the leak detector on the outside of the flange for leak detection and without auxiliary vacuum system. If the leakage rate and the gas release rate or larger volume is larger, if will leak detector connected directly to the leak detector, then may not be able to pull up leak detector of the vacuum degree, resulting in leakage detector will not work. In this case, to perform a leak test, you can only adjust the throttle valve to make it slightly open, but this will increase the response time. In addition, time specimen for the first time, water vapor and oil vapor pollution may leak detector, therefore also need auxiliary vacuum system. Auxiliary system includes a backing pump, auxiliary pump, valve, vacuum gauge and standard leak. Auxiliary pump can be a diffusion pump or roots water pump ( Whether you need auxiliary pump depends on the specific situation) Mechanical pump and backing pump gas town.

some of the water ring vacuum water pump leak detector has a series of valves. Use these valves, you can use the leak detector extraction system to complete the small, deflated and leakage of components of the extraction and leak detection. No additional auxiliary extraction system. However, from the viewpoint of maintain the stability of the leak detector sensitivity, do not use the vacuum pump is used to pump. Some foreign leak detector is equipped with auxiliary suction system, use rise more convenient.

2, water ring vacuum pump, leak detector position in the secondary system

leak detector and the connection between the two kinds of auxiliary system, the characteristics of the two methods are different. In the absence of large leakage clean containers on leak detection, leak detector shall be connected to the former level ( Low vacuum) Side. On the other hand, for the contaminated container, should find smaller container in the case of large leakage. Leakage, leakage detector should be located in the high vacuum side. The location of the leak detector should make conductance between instruments and specimen is larger, in order to make the nitrogen leak detector is higher.

when the side of the leak detector is connected to the former level, backing pump of pump speed instability will increase the sensitivity of instrument noise and reduce the leak detector. To do this, add a voltage stabilizing bottle or connect the diffusion pump.

water ring vacuum pumps auxiliary vacuum system is suitable for the leakage rate and deflated rate of large equipment. In use process, therefore, must according to the requirements for connection, and must carry out regular inspection, cleaning and maintenance, to ensure its play a good role.

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