CN203322645U

CN203322645U - Directly buried pipe

Info

Publication number: CN203322645U
Application number: CN2013203921216U
Authority: CN
Inventors: 牛凤阁; 包卫军; 任景鑫; 沈春亚
Original assignee: JIANGSU DILONG PIPE CO Ltd
Current assignee: JIANGSU DILONG PIPE CO Ltd
Priority date: 2013-07-03
Filing date: 2013-07-03
Publication date: 2013-12-04
Anticipated expiration: 2023-07-03

Abstract

The utility model relates to a directly buried pipe which structurally comprises the following components from inside to outside: a working core pipe, a heat insulation layer, a moisture-proof layer and an outer protective sheath. A part of the outer protective sheath, which is next to the end surface, is fixedly connected with a positioning board. The positioning board is fixedly connected with a backing board which is placed on the external surface of the working core pipe. The outer protective sheath is fixedly connected with the working core pipe through a fixing hook. The directly buried pipe can prevent outer protective sheath damage caused by thermal expansion and contraction of the working core rod, and also can prevent underground water seepage after outer protective sheath damage. The directly buried pipe has the following advantages: simple and reliable structure, and long service life.

Description

Direct buried pipe

Technical field

The utility model relates to heat distribution pipeline equipment, especially direct buried pipe.

Background technique

Direct buried pipe is a kind of underground heat distribution pipeline for remote conveying that is embedded in; usually by outer pillar, thermal insulation layer and work core pipe, formed; steam circulates in work core pipe; reduce the temperature of steam in transmitting procedure by thermal insulation layer and descend, outer pillar plays the effect of isolated earth, support and protective core pipe.Once in use the Groundwater infiltration direct buried pipe, because expanding with heat and contract with cold or the unexpected breakage that causes shell and thermal insulator, can be caused in the direct buried pipe somewhere, reduces the heat insulation effect of pipe network, and searches the breakage spot difficulty.

The model utility content

For addressing the above problem, it is a kind of simple in structure that the utility model provides, the service-strong direct buried pipe, and concrete technological scheme is:

Direct buried pipe is work core pipe, thermal insulation layer, vapor barrier, outer pillar internally successively to outside, be provided with positioning plate and backing plate between described work core end surfaces and outer pillar end face, described positioning plate one end is fixedly connected with outer pillar, the described positioning plate the other end is fixedly connected with backing plate, and described backing plate is placed on work core tube outer surface.

Described positioning plate and backing plate have two groups at least, and annular distribution is outside in pillar.

Described outer pillar end face and work core end surfaces also are provided with fixation hooks, and described fixation hooks one end is fixed on described outer pillar, and the other end is movably connected on work core pipe.

The utility model, because work core pipe is to be positioned on the backing plate face, leaves gap, has avoided bursting outer pillar because of work core pipe expanded by heating.Due to the existence of vapor barrier, even outer pillar breaks, can not infiltrate a large amount of underground water yet, guaranteed the heat insulation effect of pipe network.Fixation hooks is fixed work core pipe, prevents work core pipe play.

The accompanying drawing explanation

Fig. 1 is the utility model master TV structure schematic diagram;

Fig. 2 is the utility model sectional structure schematic diagram.

Embodiment

Embodiment of the present utility model now is described in conjunction with the drawings, and as depicted in figs. 1 and 2, direct buried pipe is work core pipe 1, thermal insulation layer 2, vapor barrier 3, outer pillar 4 internally successively to outside.Be provided with positioning plate 5 and backing plate 6 between work core pipe 1 end face and outer pillar 4 end faces, be fixed together by welding between positioning plate 5 and backing plate 6.The other end of positioning plate 5 is welded and fixed outside on pillar 4, thereby backing plate 6 is fixed.Backing plate 6 is positioned over work core pipe 1 outer surface, leaves gap.Backing plate 6 Main Functions are to hold work core pipe 1.Backing plate 6 and positioning plate 5 use in groups, can outside in pillar 4, prevent that work core pipe is pressed on thermal insulation layer with four groups of ring-type uniform weldings, cause thermal insulation layer and vapor barrier to damage.Also include fixation hooks 7, an end of fixation hooks 7 is fixed on outer pillar 4, and the other end is movably connected on work core pipe 1, prevents work core pipe 1 play.

Claims

1. direct buried pipe, it is characterized in that: to outside, be work core pipe, thermal insulation layer, vapor barrier, outer pillar internally successively, be provided with positioning plate and backing plate between described work core end surfaces and outer pillar end face, described positioning plate one end is fixedly connected with outer pillar, the described positioning plate the other end is fixedly connected with backing plate, and described backing plate is placed on work core tube outer surface.

2. direct buried pipe according to claim 1, it is characterized in that: described positioning plate and backing plate have two groups at least, and annular distribution is outside in pillar.

3. according to the described direct buried pipe of claim 1 or 2, it is characterized in that: described outer pillar end face and work core end surfaces also are provided with fixation hooks, and described fixation hooks one end is fixed on described outer pillar, and the other end is movably connected on described work core pipe.