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Heat preservation pipeline system special for pipe gallery laying without fixing piers and laying method

A heat-insulating pipeline without fixing technology, which is applied in the direction of pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc. It can solve the problems of heat preservation and outer protection pipe materials, flammability, fire safety, pipe buckling and deformation, etc., and achieve shortening The effect of installation cycle, space saving, good safety and fire performance

Active Publication Date: 2016-09-14
廊坊华宇天创能源设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a special thermal insulation pipeline system and laying method for laying without fixed piers in the pipeline gallery, which can automatically eliminate the thermal stress between the compensation units in the thermal insulation pipeline system, and effectively solve the problem of no soil bondage of the thermal insulation pipeline in the pipeline gallery. Safety issues of pipeline buckling deformation caused by overcoming axial force in the case of fixed pier
At the same time, it can solve the fire safety problem of flammable insulation and outer protection pipe materials

Method used

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  • Heat preservation pipeline system special for pipe gallery laying without fixing piers and laying method
  • Heat preservation pipeline system special for pipe gallery laying without fixing piers and laying method
  • Heat preservation pipeline system special for pipe gallery laying without fixing piers and laying method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] See figure 1 , figure 2 , the compensation unit includes a working pipe 3, a fixed flange 1, a sliding flange 8, a support flange 9, a tie rod 2, a thermal insulation compensator 4, a thermal insulation layer, and a galvanized spiral air duct 7, and the fixed flange 1 is fixed on the working At both ends of the pipe 3, the insulation compensator 4 is installed in the middle of the working pipe 3, the insulation layer is wrapped on the outside of the working pipe 3, and the galvanized spiral air duct 7 is wrapped on the outside of the insulation layer as an outer protective pipe. A plurality of sliding flanges 8 and supporting flanges 9 are sleeved on the air duct 7, the fixed flange 1 is connected to the adjacent sliding flange 8 through the tie rod 2, and the two adjacent sliding flanges 8 are connected through the tie rod 2 For connection, the supporting flanges 9 are evenly distributed between the sliding flange 8 and the fixed flange 1 and between two adjacent sli...

Embodiment 2

[0030] See image 3 , Figure 4 , the compensation unit includes a working pipe 3, a fixed flange 1, a sliding flange 8, a support flange 9, a pull rod 2, a thermal insulation compensator 4, a thermal insulation layer, a galvanized spiral air duct 7, an alarm line 10, and a fixed flange 1 is fixed at both ends of the working tube 3, the thermal insulation compensator 4 is installed in the middle of the working tube 3, the thermal insulation layer is wrapped on the outside of the working tube 3, and the galvanized spiral air duct 7 is wrapped on the outer side of the thermal insulation layer as an outer protective tube. A plurality of sliding flanges 8 and supporting flanges 9 are socketed on the galvanized spiral air duct 7 , the fixed flange 1 is connected to the adjacent sliding flange 8 through a tie rod 2 , and the connection between the two adjacent sliding flanges 8 The two are connected by tie rods 2, and the supporting flanges 9 are evenly distributed between the slid...

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PUM

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Abstract

The invention provides a heat preservation pipeline system special for pipe gallery laying without fixing piers and a laying method. The pipeline system is formed by fixedly connecting multiple compensation units. A heat preservation compensator is arranged in the middle of each compensation unit, and fixing flanges are arranged at the two ends of each compensation unit and connected and located through a pull rod. When working pipes expand when heated, the tensile force of the pull rods counteract axial elongation force in the compensation units, and thermal elongation of the working pipes is absorbed through the heat preservation compensators in the middles of the compensation units, so that thermal stress among all the compensation units in the pipeline system is eliminated. According to the heat preservation pipeline system special for pipe gallery laying without the fixing piers and the laying method, the pipeline system is easy and convenient to mount in a pipe gallery, no fixing piers or loop expansion pipes need to be manufactured, and the influence on other pipeline facilities of pipe galleries of other companies in the same field is avoided; the space occupied by the pipe gallery is saved, and pipelines are easy and convenient to mount and can be directly placed on a bracket of the pipe gallery; no fixing piers need to be arranged, the pipeline mounting expenses are reduced, mounting efficiency is improved, and the mounting period is shortened; and very good safety fireproof performance is achieved.

Description

technical field [0001] The invention relates to the technical field of laying heat-insulating pipelines for pipe racks, in particular to a special heat-insulating pipe system for laying pipe racks without fixed piers and a laying method. Background technique [0002] The current conventional prefabricated direct-buried insulation pipe structure is (from inside to outside) working pipe-polyurethane insulation layer-polyethylene outer protection pipe. There are pipeline accessories such as compensators and fixed piers in the pipeline network to ensure the safe operation of the pipeline. Such a pipeline structure system is suitable for underground direct burial laying, and the axial force of the pipeline is overcome by the binding of the soil to the fixed pier of the pipeline. The existing problems are: first, in the pipe gallery, the laying of the thermal insulation pipe loses the restraint of the soil and the fixing effect of the fixed pier, and the compensator in the pipeli...

Claims

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Application Information

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IPC IPC(8): F16L1/036
CPCF16L1/036
Inventor 史朝旭叶连基
Owner 廊坊华宇天创能源设备有限公司