Inflation device of isolation bag, isolation bag, inflation bottle and inflation method

Abstract

The invention discloses an inflation device of an isolation bag, the isolation bag, an inflation bottle and an inflation method. The inflation device comprises a first electric control valve, an inflation bottle connecting pipeline, an isolation bag connecting pipeline, a pressure detection device, a flow regulator and a controller, wherein the first electric control valve is provided with an airinlet and an air outlet; one end of the inflation bottle connecting pipeline is connected with the air inlet; one end of the isolation bag connecting pipeline is connected with the air outlet; the pressure detection device is mounted on the isolation bag connecting pipeline; the flow regulator is arranged on the inflation bottle connecting pipeline, and the flow regulator is connected with the pressure detection device in series; and the controller is configured to continuously obtain a pressure value detected by the pressure detection device after the pressure in the isolation bag reaches a set value, control the first electric control valve and the flow regulator to be opened when the pressure value detected by the pressure detection device is smaller than the set value, and according tothe pressure value detected by the pressure detection device, adjust the valve opening of the flow regulator. According to the inflation device, the problem that due to the fact that the isolation bag is pricked and leaks air, the pressure of the isolation bag is not enough to block a pipeline, oil-gas isolation fails, and potential safety hazards are caused can be solved.

Description

technical field [0001] The invention relates to the field of oil and gas pipelines, in particular to an inflator for an isolation bag, an isolation bag, an inflatable bottle and an inflatable method. Background technique [0002] When carrying out hot work on oil and gas pipelines that have been put into use (such as welding and cutting operations that may generate flames and sparks on oil and gas pipelines), it is necessary to block the oil and gas pipelines to achieve oil and gas isolation in the pipeline and prevent hot work. When the oil and gas enter the hot work area, it will cause safety problems. [0003] At present, the isolation bag is used to isolate oil and gas from the pipeline. When in use, the isolation bag is put into the pipeline, and the nitrogen bottle is used to fill the isolation bag with nitrogen. When filling, the nitrogen gas on the pipeline connected to the isolation bag can be adjusted. The outlet pressure of the pressure reducing valve fills the i...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides an isolation bag inflation device, an isolation bag, an inflatable bottle, and an inflation method, which can prevent the isolation bag from leaking due to puncture, so that the pressure of the isolation bag is not enough to block the pipeline, resulting in failure of oil and gas isolation. Issues that pose a safety hazard

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