CN201764160U

CN201764160U - High-density PE pipe flange joint device

Info

Publication number: CN201764160U
Application number: CN2010202975889U
Authority: CN
Inventors: 王洪信; 张汉
Original assignee: FURUI SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd KELAMAYI CITY
Current assignee: FURUI SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd KELAMAYI CITY
Priority date: 2010-08-19
Filing date: 2010-08-19
Publication date: 2011-03-16
Anticipated expiration: 2020-08-19

Abstract

Disclosed is a high-density PE pipe flange joint device. A port of a modified PED pipe 5 lined in an original steel pipe 6 is connected with a PED transition pipe 7 and then fixedly connected with a steel flange 2 at a port of a steel pipe 1 through a PE flange 11 after being connected with a PED pup joint 3, outer walls of the PE transition pipe 7 and the PE pup joint 3 are wrapped with cement mortar 8 and then wrapped with a steel jacket 4, and one end of the steel jacket 4 is connected with the original steel pipe 6. A high-density PE pipe is inserted into an old pipe required to be repaired, by means of adopting the original old pipe with rigidity and strength as a load-bearing structure and adopting characteristics of corrosion resistance, wear resistance, seepage resistance and the like of the high-density HDPE pipe, a pipe-in-pipe composite structure is formed, and the repaired and connected pipe has comprehensive properties of the steel pipe and the high-density PE pipe, thereby prolonging service life of the original old pipe and reducing pipeline replacement cost. In addition, the high-density PE pipe flange joint device is applicable to various different complex construction environments, can repair broken pipelines timely after pipelines are broken, saves cost and reduces loss.

Description

High density PE pipe flange piecing devices

Technical field:

The utility model relates to a kind of constructional device to oil, gas, water pipeline mounting flange joint, especially high density PE pipe flange piecing devices.

Background technique:

At present, in the known technology, at oil to be repaired, gas, after the high density polyethylene (HDPE) (being called for short HDPE) that interts in water pipeline carries out is managed bushing pipe, reach pipeline rehabilitation and corrosion-resistant purpose, at the scene in the construction, pipeline cleaning and HDPE pipe liner will be divided into a plurality of construction sections to carry out respectively, after each construction section cleaning liner is finished, will require according to the technological process of pipeline each construction section HDPE pipe is interconnected perforation, when wherein the bigger needs of caliber adopt the flange connection, after prior art is installed, be prone to the interface corrosion, unfavorable accidents such as infiltration and wearing and tearing, and anticorrosion, anti-infiltration, anti abrasive related art scheme is not seen open.

Summary of the invention:

When the purpose of this utility model provides a kind of high density PE pipe that will repair after the preservative treatment and adopts flange plate to connect, have anticorrosion, anti-infiltration, anti abrasive constructional device, i.e. high density PE pipe flange piecing devices.

Realize that the measure of the present utility model purpose comprises: lining modified PE tube opening in former steel pipe connects the PE CONCENTRIC REDUCER, connect again that the steel flange by PE flange and steel pipe port is fastenedly connected behind the PE pipe nipple, Cladding Steel overcoat after PE CONCENTRIC REDUCER and PE pipe nipple outer wall parcel slush, steel sleeve one end connects former steel pipe.

The utility model advantage: highdensity PE pipe is inserted in the old pipeline that needs to repair, utilize the rigidity of former pipeline and intensity for load-carrying construction and characteristics such as high density HDPE pipe is corrosion-resistant, wear-resistant, anti-infiltrations, form the pipe-in-pipe composite structure, make repair and connect after pipeline possess the combination property of steel pipe and high density PE pipe, original old pipeline is increased the service life, thereby reduce the cost of changing pipeline; Adapt to multiple different complicated construction environment, after pipeline breaking, can timely the pipeline that breaks be repaired, save cost, reduce loss.

Description of drawings:

Fig. 1 is the utility model embodiment 1 a structural representation

Reference character comprises: steel pipe 1, steel flange 2, PE pipe nipple 3, steel sleeve 4, modified PE pipe 5, former steel pipe 6, PE CONCENTRIC REDUCER 7, slush 8, PE electric smelting cover 9, steel horn mouth 10, PE flange 11.

Embodiment:

Embodiment 1: lining modified PE pipe 5 ports in former steel pipe 6 connect PE CONCENTRIC REDUCER 7, connecting PE pipe nipple 3 backs again is fastenedly connected by the steel flange 2 of PE flange 11 with steel pipe 1 port, at PE CONCENTRIC REDUCER 7 and PE pipe nipple 3 outer walls parcel slush 8 back Cladding Steel overcoats 4, steel sleeve 4 one ends connect former steel pipe 6.

Fixedly connected PE electric smelting cover 9 with PE pipe nipple 3 connection part outer rims in PE CONCENTRIC REDUCER 7.

Steel sleeve 4 diameters are greater than former steel pipe 6, and steel sleeve 4 outer ends connect steel horn mouth 10, and steel horn mouth 10 connects PE flange 11.

When the utility model embodiment used, with the artificial power of electrically powered machine, the wire rope that drives 2mm passed through former steel pipe 6, had been that power drive scissors rule are cleaned the impurity in the former steel pipe 6 with the tractor; With file rule the overlap in former steel pipe 6 tube walls is removed; With the tractor is that power drive steel plate brush cleans the impurity in former steel pipe 6 pipelines; With wire brush the greasy dirt of remaining residue in the pipeline is carried out repeatedly removing at last, to reach the construction quality requirement of liner modified PE pipe 5; Drawing head is fixed on the head end of HDPE modified PE pipe 5 bushing pipes, links to each other with the tractor wire rope; Start size reducing machine and tractor synchronously, behind the temporary transient undergauge of HDPE modified PE pipe 5 advanced size reducing machines, enter former steel pipe 6 pipelines then, under the effect of tractive force, pull out from the other end.In the end of modified PE pipe 5 welding PE CONCENTRIC REDUCER 7, the welding back connects the fixedly PE pipe nipple 3 of PE flange 11 of rear end, with alcohol wipe PE pipe nipple 3 and PE CONCENTRIC REDUCER 7 connecting port dusts, extract PE electric smelting cover 9 in outer rim, measure suitable welding distance, welding scope with PE electric smelting cover 9 is a benchmark, get identical distance in both sides port average magnitude respectively, be communicated with power supply, on PE electric smelting cover 9, connect hot-melt welding machine, will advance scanning to the accent type sign indicating number on the PE electric smelting cover 9 earlier before welding, the identification of thermofussion welding function can be carried out sweat soldering, must be from new replacing PE electric smelting cover 9 as not discerning; In the sweat soldering process, by the hot melt situation that manhole is observed welding, the PE that is extruded during as appearance welding in manhole, then the expression welding is all right, if the PE of hot melt does not appear in manhole when welding, then need from new welding, hot melt generally is controlled at about 15 minutes heating time.There is the steel sleeve 4 of steel horn mouth 10 to be welded on former steel pipe 6 ports filling concrete mortar 8 in steel sleeve 4 tail end; At last, connect fastening steel flange 2 and PE flange 11 with bolt.

In the utility model, highdensity PE pipe is inserted in the old pipeline that needs to repair, utilize the rigidity of former pipeline and intensity for load-carrying construction and characteristics such as high density HDPE pipe is corrosion-resistant, wear-resistant, anti-infiltrations, form the pipe-in-pipe composite structure, make repair and connect after pipeline possess the combination property of steel pipe and high density PE pipe, original old pipeline is increased the service life, thereby reduce the cost of changing pipeline; Adapt to multiple different complicated construction environment, after pipeline breaking, can timely the pipeline that breaks be repaired, save cost, reduce loss.

Claims

1. high density PE pipe flange piecing devices, it is characterized in that, lining modified PE pipe (5) port in former steel pipe (6) connects PE CONCENTRIC REDUCER (7), connecting PE pipe nipple (3) back again is fastenedly connected by the steel flange (2) of PE flange (11) with steel pipe (1) port, at PE CONCENTRIC REDUCER (7) and PE pipe nipple (3) outer wall parcel slush (8) back Cladding Steel overcoat (4), steel sleeve (4) one ends connect former steel pipe (6).

2. high density PE pipe flange piecing devices as claimed in claim 1 is characterized in that, fixedly connected PE electric smelting cover (9) with PE pipe nipple (3) connection part outer rim in PE CONCENTRIC REDUCER (7).

3. high density PE pipe flange piecing devices as claimed in claim 1 is characterized in that, steel sleeve (4) diameter is greater than former steel pipe (6), and steel sleeve (4) outer end connects steel horn mouth (10), and steel horn mouth (10) connects PE flange (11).