| 摘要 |
The automatic insertion device will insert or withdraw a piston rod into a pressurized fluid pipeline. In one embodiment, the piston rod will allow intrumentation on the exterior of the pipeline to directly sense the pressure of the fluid inside of the pipeline. In an alternate embodiment, the piston rod may be used to remove liquids from the pressurized pipeline. In the preferred embodiment, a cap is put on the end of the piston rod to isolate it from the pressure inside of the pipeline. The automatic insertion device can then be equipped with a turbine meter, a temperature sensor, or doppler measuring equipment. In another embodiment, a pitot probe can be placed on the end of the pipeline for measurement of differential pressure which, with additional instrumentation, can be used to measure flow through the pipeline. In another embodiment, the automatic insertion device can be combined with a pump to remove samples of the fluid within the pipeline.
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