Maintenance-free directly-buried prefabricated heat-insulating pressure difference dredging and draining water vapor pipe

Abstract

The invention relates to the field of vapor pipeline dredging nodes, in particular to a maintenance-free directly-buried prefabricated heat-insulating pressure difference dredging and draining water vapor pipe. The pipe is characterized by comprising a water collection tank, a forced-drainage one-way valve, a working pipe connecting section and a water collection pipe, one end of the water collection pipe is vertically communicated with the working pipe connecting section while the other end of the same is connected on the water collection tank in an inserted manner, the forced-drainage one-way valve is arranged on the water collection pipe, a water dredging leading-out pipe and a forced-drainage air supply pipe are inserted on the water collection tank, an inlet of a control valve air pipe, an inlet of the forced-exhaust air supply pipe and an outlet of the water dredging leading-out pipe are all arranged above the working pipe connecting section, and the working pipe connecting section, the water collection tank and the water dredging leading-out pipe are connected into a whole through a heat-insulating layer and a closed steel shell. Compared with the prior art, the maintenance-free directly-buried prefabricated heat-insulating pressure difference dredging and draining water vapor pipe has the advantages that functions of water dredging, water draining and a water dredging well chamber are realized at the same time, and the pipe is used for dredging of along-path condensed water and draining of starting condensed water and needless of manual maintenance and drainage during running.

Description

technical field [0001] The invention relates to the field of drainage nodes of steam pipelines, in particular to a maintenance-free direct-buried prefabricated thermal insulation pressure difference drainage steam pipe fitting. Background technique [0002] At present, for the drainage and drainage of directly buried prefabricated thermal insulation steam pipelines in engineering, the general practice is to install drainage pipe fittings at the drainage point, connect the condensate outlet pipe of the drainage fitting to the steam trap group, and the condensate discharge pipe of the steam trap group leads into the drain The collection well unit of the well chamber, the collection well chamber and the trap group well chamber are independent of each other. During the start-up operation, the operator needs to enter the well chamber of the trap valve group, manually open the bypass valve of the trap unit and close the branch valve of the drain, so as to ensure that the condensed...

AI Technical Summary

Problems solved by technology

This method of constructing and operating drainage points has the disadvantages of large investment, cumbersome operation, heavy manual work, and heavy daily maintenance workload. In addition, water accumulation in the well chamber and serious corrosion of the valve group are often caused by the unqualified well chamber seal. , the service life of the equipment is greatly shortened and needs to be improved urgently

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