Condensed and blocked pipeline dredging equipment

Abstract

The invention relates to a congealed and blocked pipeline dredging device which comprises a steam pipeline, a pushing mechanism and a non-return mechanism, one end of the steam pipeline is used for stretching into the congealed and blocked pipeline, the other end of the steam pipeline is used for introducing steam, and the pushing mechanism drives the steam pipeline to synchronously move towards the congealed and blocked pipeline or to be separated from the steam pipeline and reversely move and reset. And the non-return mechanism is used for fixing the steam pipeline when the propelling mechanism moves reversely. The method has the beneficial effects that on the basis of the characteristic of high condensation point of the condensation and blockage medium, common steam of a chemical device is used as a medium to melt and carry exhausted gas. The propelling mechanism drives the steam pipeline to move to a condensation and blockage point in the condensation and blockage pipeline, the steam pipeline enables steam to directly reach the condensation and blockage point, high temperature and high pressure of the steam serve as a heat source for melting a condensation and blockage medium, and the steam further has a gas carrying effect for conveying the condensation and blockage medium. A non-return mechanism is arranged on the steam pipeline, so that the steam pipeline is prevented from retreating along with the propelling mechanism or retreating due to steam blowback force.

Description

technical field

[0001] The invention relates to a dredging device, in particular to a dredging device for a clogged pipeline. Background technique

[0002] Some chemical process production involves high freezing point medium, and related common pipelines are designed with heat tracing to ensure that the temperature of the pipeline is higher than the freezing point of the medium. Blockage will occur. This kind of blockage is different from sewer blockage in life. The medium with high freezing point may exist in a solid state for several meters or even tens of meters inside the pipeline. Using high-pressure gas to rely on absolute pressure to push the blocking medium to move and dredge is extremely dangerous and cannot guarantee the effect. However, using the conventional extended spring rotary dredging machine cannot break the clogged medium and discharge it. After a heat tracing pipeline needs to be melted for a long time after troubleshooting, pressure dredging can be use...

Images