Waterproof construction method characterized by heat pipeline sleeved in steel sleeve pre-buried in external wall and waterproof system structure using for same

A technology for thermal pipelines and construction methods, applied in the direction of pipes/pipe joints/fittings, pipes, machinery and equipment, etc., can solve the problems of long custom-made processing cycle, complicated on-site construction, high construction cost, and achieve good waterproof effect, simple construction, The effect of reducing engineering costs

Active Publication Date: 2012-07-04
BEIJING GAS & HEATING ENG DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waterproofing method applied to the pre-embedded steel casing of the thermal pipeline adopts the flange joint method for waterproof

Method used

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  • Waterproof construction method characterized by heat pipeline sleeved in steel sleeve pre-buried in external wall and waterproof system structure using for same
  • Waterproof construction method characterized by heat pipeline sleeved in steel sleeve pre-buried in external wall and waterproof system structure using for same
  • Waterproof construction method characterized by heat pipeline sleeved in steel sleeve pre-buried in external wall and waterproof system structure using for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like figure 1 , figure 2 As shown, the pre-design is used in a central heating pipe network project in a riverside city. Directly buried DN1000 large-diameter thermal main line, located in the Songhua River Basin, with high groundwater level, underground pipeline equipment valve room has waterproof requirements, the specific steps of the waterproof construction method of directly buried thermal pipeline through the wall:

[0051] 1. The processing factory customizes the pre-embedded steel casing DN1330X12, and processes the annular water-stop flange -100X10, -100X10 wing ring at the same time, and the length of the steel casing 1 is processed according to the thickness B of the side wall of the equipment valve chamber;

[0052] 2. The finished steel casing is pre-embedded in a fixed position on the side wall of the reinforced concrete equipment valve chamber;

[0053] 3. The directly buried thermal insulation pipeline 2 passes through the steel casing 1 and is instal...

Embodiment 2

[0060] The thermal main line is directly buried with a large pipe diameter of DN1000, and the waterproof construction method of the thermal pipeline through the wall is similar to Example 1. The difference is: the waterproof treatment of the outer corner of the thermal insulation pipeline and the side wall of the valve chamber:

[0061] The steel casing is pre-embedded on the outer wall of the valve, and the extruded polystyrene board is pasted as a cushion. The outer wall is waterproof along the cushion and makes three to five folds within 200mm of the corner to keep the waterproof membrane loose and along the heat After the insulation pipe is waterproofed to 200mm, the waterproof coiled material is firmly bonded to the outer wall of the direct-buried thermal insulation pipe and wrapped tightly with glass cloth;

[0062] 5mm polyethylene sheet is used for protection on the outside of the waterproof membrane, and another 20mm polyethylene sheet is used to tighten the loose ...

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Abstract

The invention provides a waterproof construction method characterized by a heat pipeline sleeved in a steel sleeve pre-buried in an external wall and a waterproof system structure. The waterproof construction method includes steps as follows: the steel sleeve is pre-buried in the wall; a heat insulation pipeline is sleeved in the steel sleeve and fixed; the clearance between the steel sleeve and the heat insulation pipeline is filled with a functional material; the functional material at least includes a set of water swellable rubber strip layers; baffles are arranged on the outer sides at both ends of the steel sleeve; the outer sides of the baffles are waterproof, and raiser blocks used for supporting are arranged and tightly clung to the baffles; a waterproof coiled material is laid inan intersection area of the external wall body and the heat insulation pipeline, and wrinkles are formed at the corner of the waterproof coiled material, so that the waterproof coiled material and the outer wall of a direct-buried heat insulation pipeline can be combined and wound tightly; the waterproof coiled material is externally provided with a protection layer; a local reinforcement protection facility is arranged on the outer side at the wrinkle part at the corner of the waterproof coiled material; and the backfilling is performed. The structure is an integral system structure established upon the method. The construction method is simple and short in period, and lowers the investment; the daily maintenance is convenient, the waterproof effect is excellent, the service life is long, and the operation management cost is low; and further, the requirement for the operation of a heat pipeline network can be satisfied.

Description

technical field [0001] The invention relates to a waterproof construction method for a stretchable thermal pipeline passing through an external wall pre-embedded steel casing and a waterproof system structure used in the method. Background technique [0002] At present, with the large-scale development of urban construction and central heating in my country, the construction scale of efficient and energy-saving heat pipe network is expanding day by day. Due to temperature changes during operation, thermal pipes cause thermal expansion and contraction, resulting in displacement. In this way, when thermal pipelines pass through equipment wells and building exterior walls, flexible waterproof pre-embedded steel casings are often used to meet the scalability and maintainability requirements of thermal pipelines. [0003] There are standard atlases (national standards and local standards) for conventional pre-embedded steel casing waterproofing methods. In addition to the outer ...

Claims

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Application Information

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IPC IPC(8): F16L5/02
Inventor 陆景慧
Owner BEIJING GAS & HEATING ENG DESIGN INST
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