Composite closed type sleeve compensator for steam

Abstract

The invention relates to a pressure pipeline component, namely a composite closed type sleeve compensator for steam, wherein a core pipe outer sleeve is provided with an outer sleeve pipe, sealing filler is filled between a core pipe and the outer sleeve pipe, a fixed end outer sleeve pipe is fixedly connected with a tail pipe through a guiding and positioning ring, the sealing filler between thecore pipe and the outer sleeve pipe comprises fixed end sealing filler and movable end sealing filler, the two sections of the sealing filler is not connected with each other, the outer sleeve pipe corresponding to the fixed end sealing filler is provided with a material filling nozzle, and the material filling nozzle is used for filling and supplementing materials so as to adjust the sealing. Twoseal cavities adopted by the composite closed type sleeve compensator are filled with the sealing filler respectively, and a flange is arranged on the sleeve compensator and can adjust gaps of the movable end sealing filler, thus the sealability is greatly improved, the material filling time of the fixed end sealing filler is prolonged; besides, four guiding and positioning rings improve the positioning and guiding performances between the core pipe and the outer sleeve pipe, reduce the maintenance cost, improve the capability of products to deal with accidents, ensure the safe running of a pipe network, and achieve maintenance without stopping production.

Description

1. Technical field: [0001] The invention relates to a pressure pipeline element, in particular to a heat compensation device for a heat pipeline. 2. Background technology: [0002] The injection sleeve compensator has passed the test of long-term use, and it consists of a core pipe, an outer casing, a guide bush, a tail pipe, a sealing ring, an injection nozzle and a sealing packing. When working, rely on the relative sliding between the core tube and the outer tube to absorb the expansion and contraction of the pipeline caused by thermal expansion and contraction. The sealing between the core tube and the outer casing is realized through a sealing chamber composed of a sealing ring and a sealing packing. The sealing packing is injected by pressure from the injection nozzle, and can be replenished while the pipe network is running for non-stop maintenance. Operation practice has proved that the product is reliable in operation, easy in maintenance, and has a longer working...

AI Technical Summary

Problems solved by technology

But it still needs to be improved and improved. For example, it is not suitable for use on steam pipes. In a long-term thermal environment, the volatile components in the filled sealing packing will lose a lot, and it needs to be injected, and the injection time interval Short, which increases maintenance costs

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