CN201368293Y

CN201368293Y - Tunnel type electric heat tracing anticorrosive heat-insulating pipe

Info

Publication number: CN201368293Y
Application number: CNU2009201482307U
Authority: CN
Inventors: 孙凤霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-30
Filing date: 2009-03-30
Publication date: 2009-12-23
Anticipated expiration: 2019-03-30

Abstract

The utility model relates to a tunnel type electric heat tracing anticorrosive heat-insulating pipe, which mainly solves the problems of high electric fault rate and unable replacement of pipelines caused by bad sealing and loose connection of electric interfaces. The tunnel type electric heat tracing anticorrosive heat-insulating pipe is characterized in that a tunnel pipe (4) and a threading pipe (5) are fixed on the wall of a steel pipe (1) along the axial direction, and the outsides of the steel pipe (1), the tunnel pipe (4) and the threading pipe (5) are coated with heat insulating layers (2). A through tunnel and a threading pipeline can form on the whole pipeline, therefore, the electric interfaces are few or none, the replacement is convenient, the electric accidents of earth leakage, short-circuit, open circuit and the like which are caused by the bad sealing and loose connection of the electric interfaces can be reduced, the electric fault rate is low, the investment is few, and the installation speed is fast.

Description

Tunnel type electrical tracing anti-corrosion heat insulation pipe

Technical field:

The utility model relates to a kind of electrical tracing anti-corrosion heat insulation pipe, particularly a kind of tunnel type electrical tracing anti-corrosion heat insulation pipe.

Background technique:

Carbon fiber heating line is widely used in the electric tracing thermal insulation of various pipelines.Prefabricated electrical tracing anti-corrosion heat insulation pipe: connect on the steel pipe two and to lay carbon fiber electrothermal line, paste fixing along carbon fiber electrothermal line with aluminum foil and adhesive tape; Make thermal insulation layer and protective coating, add three power lines in the thermal insulation layer; Add tarpaulin in two ends, power line and carbon fiber electrothermal line termination pass tarpaulin.With the welding of electrical tracing anti-corrosion heat insulation pipe together, two ends and flowing medium turnover, mouth are met and discussed; Power line and carbon fiber electrothermal line are linked together by electric interfaces, be connected with power supply by temperature controlling device; Carry out repaired mouth at each weld bond place.Because be subjected to the restriction of the prefabricated length of electrical tracing anti-corrosion heat insulation pipe, on the electrical tracing corrosion-resistanting insulation pipe, all there is electric interfaces in each repaired mouth place.Poorly sealed because of electric interfaces, connect that factor such as unreal often causes electric leakage, short circuit, electrical failure such as open circuit, so electrical failure rate height; Because power line and carbon fiber electrothermal line are fixed on the electrical tracing anti-corrosion heat insulation pipe, when electrical failure takes place, can't change.

The model utility content:

Technical problem to be solved in the utility model is to overcome exist in the background technique many and electric interfaces is poorly sealed, connect the problem that electrical failure rate that factor such as unreal causes is high and can't change because of electric interfaces on the pipeline, and provide a kind of tunnel type electrical tracing anti-corrosion heat insulation pipe, this tunnel type electrical tracing anti-corrosion heat insulation pipe places in the tunnel and penetration pipe of perforation because of carbon fiber electrothermal line and power line, no unnecessary electric connecting point is difficult for that electrical failure takes place and replacing is convenient.

The invention for solving the technical problem can reach by following technical solution: this tunnel type electrical tracing anti-corrosion heat insulation pipe comprises steel pipe, thermal insulation layer, protective coating, thermal insulation layer is between steel pipe and protective coating, affixed tunneltron and penetration pipe steel pipe walls is axial, steel pipe, tunneltron and penetration pipe outsourcing thermal insulation layer.

Described tunneltron is the U-groove bevel of opening subtend steel pipe.

The utility model is compared with the above-mentioned background technology can have following beneficial effect: this tunnel type electrical tracing anti-corrosion heat insulation pipe is not subjected to this to manage prefabricated length and length of pipeline limits, electrically-heated-wire (band), power line, signaling line etc. all can penetrate by tunnel and penetration pipe, power line and carbon fiber electrothermal line (band) need not be fixed on the pipeline, thereby electric interfaces seldom or do not have, it is convenient to change, reduced poorly sealed because of electric interfaces, connect electric leakage, short circuit that factor such as unreal causes, electric accident such as open circuit, the electrical failure rate is low; Little investment, installation rate is fast.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is side views of Fig. 1.

Among the figure: 1-steel pipe, 2-thermal insulation layer, 3-protective coating, 4-tunneltron, 5-penetration pipe.

Embodiment:

Below in conjunction with accompanying drawing will the utility model is described in further detail:

Fig. 1 is in conjunction with shown in Figure 2, and this tunnel type electrical tracing anti-corrosion heat insulation pipe comprises steel pipe 1, thermal insulation layer 2, and protective coating 3, thermal insulation layer 2 are between steel pipe 1 and protective coating 3, and thermal insulation layer 2 is a polyurethane foam; Affixed tunneltron 4 and penetration pipe 5 steel pipe 1 wall is axial penetrate electrically-heated-wire (band) in the tunneltron 4, tunneltron 4 is the U-groove bevel of opening subtend steel pipe 1, can guarantee that electrically-heated-wire (band) heat conducts along tube wall; Penetrate power line or signaling line in the penetration pipe 5, when next stage pipeline non-transformer, the power line of can packing within it.For guaranteeing the control of pipeline bulk temperature rationally, need to survey multi-point temp, can in penetration pipe 5, penetrate signaling line, with the transmission that links together of each point probe unit.When next stage pipeline non-transformer and need threephase AC and during a signaling line, need to place 4 penetration pipes 5 at most.Tunneltron 4 and penetration pipe 5 will closely be arranged on every steel pipe in order, the conformity when connecting with maintenance, neat errorless arrangement.Steel pipe 1, tunneltron 4 and penetration pipe 5 outsourcing thermal insulation layers 2.

The prefabricated process of this tunnel type electrical tracing anti-corrosion heat insulation pipe: use to connect shorter slightly the U-shaped tunnel of a steel pipe than two and be buckled on the tube wall vertically, fix and be sealed in U type tunneltron on the pipeline with aluminum foil and adhesive tape, the two-port rubber belt sealing, the U-shaped tunneltron is the hard PVC material, is used to pass through electrically-heated-wire (band); Pass through the round penetration pipe of power line or signaling line, length is identical with the U-shaped tunneltron, is fixed on the pipeline two-port rubber belt sealing with adhesive tape; The sealing of tunneltron and penetration pipe is in the prefabricated process of thermal insulation layer and protective layer, prevents that polyurethane foam from clamp-oning tunneltron and penetration pipe and blocking pipe, and U type tunneltron and penetration pipe quantity are determined according to actual needs and arranged in certain sequence.Thermal insulation layer is a polyurethane foam, and protective layer is a polyvinyl plastics, and thermal insulation layer, protective layer and tarpaulin (SY/T0415-1996) are made by " burying ground steel pipe RPUF anticorrosion insulating layer technical standard ".

When being used for corrosion-resistanting insulation pipe, penetrate the ribbon heater, penetrate power line and signaling line, be electrically connected, last repaired mouth along round penetration pipe at the tunnel type electrical tracing corrosion-resistanting insulation pipe upper edge U type tunneltron that has connected.This tunnel type electrical tracing anti-corrosion heat insulation pipe little investment, installation rate is fast.Also be applicable to built on stilts or temporary pipeline.

Claims

1, a kind of tunnel type electrical tracing anti-corrosion heat insulation pipe, comprise steel pipe (1), thermal insulation layer (2), protective coating (3), thermal insulation layer (2) is between steel pipe (1) and protective coating (3), it is characterized in that: axially go up affixed tunneltron (4) and penetration pipe (5) at steel pipe (1) wall, steel pipe (1), tunneltron (4) and penetration pipe (5) outsourcing thermal insulation layer (2).

2, tunnel type electrical tracing anti-corrosion heat insulation pipe according to claim 1, it is characterized in that: described tunneltron (4) is the U-groove bevel of opening subtend steel pipe (1).

3, tunnel type electrical tracing anti-corrosion heat insulation pipe according to claim 1 and 2 is characterized in that: described tunneltron (4) and penetration pipe (5) are closely arranged in order.

4, tunnel type electrical tracing anti-corrosion heat insulation pipe according to claim 3, it is characterized in that: described penetration pipe (5) can be 4.