CN104608306A

CN104608306A - Thermal insulation tube forming process capable of automatically exhausting gas

Info

Publication number: CN104608306A
Application number: CN201510054972.3A
Authority: CN
Inventors: 丛树界
Original assignee: DALIAN KAIYUAN PIPELINE Co Ltd
Current assignee: DALIAN KAIYUAN PIPELINE Co Ltd
Priority date: 2015-01-30
Filing date: 2015-01-30
Publication date: 2015-05-13

Abstract

The invention discloses a thermal insulation tube forming process capable of automatically exhausting gas. The thermal insulation tube forming process comprises the following steps: uniformly mixing a plurality of supporting frames at an outer side of a working core tube in a spaced manner; arranging an outer protective tube with a thermal insulation material filling hole in middle at the outer sides of the supporting frames in a sleeving mode, and keeping the outer protective tube to be relatively coaxial with the working core tube; arranging end enclosures at the two ends of the outer protective tube, and arranging the end enclosures on the working core tube in the sleeving mode; forming spigots in the inner sides of the end enclosures, and arranging the end head of the outer protective tube at the outer sides of the spigots in the sleeving mode; and forming through holes in the end enclosures, arranging gas exhausting plugs at inner end ports of the through holes, and arranging a plurality of gas vent holes in the gas exhausting plugs, wherein the diameter of the gas vent holes is smaller than 1.2 mm. Compared with the prior art, the labor power is saved, the working efficiency is improved, the potential safety hazards are avoided and the processing cost is reduced.

Description

Can self-bleeding insulating tube moulding process

Technical field

The present invention relates to a kind of tube forming technique, particularly one can self-bleeding insulating tube moulding process.

Background technology

Existing heat supply insulating tube comprises the work core pipe being positioned at inner side, the outer pillar of middle part with filled thermal insulation materials mouth is set with in the outside of work core pipe, be provided with multiple even and spaced bracing frame outside between pillar and work core pipe, relatively keep coaxial between outer pillar and work core pipe by bracing frame.Insulation material is had outside between pillar and work core pipe.The insulating tube moulding process of this structure is as follows: first also evenly fix multiple bracing frame at the outside spacers of work core pipe; Middle part is contained in the outside of multiple bracing frame with the outer protective pipe sleeve of filled thermal insulation materials mouth, keeps outer pillar and work core pipe confronting coaxial; The two ends of pillar are provided with end socket outside, i.e. the termination of the tubular space of the outer pillar of shutoff and the formation of work core pipe.Filling-foam insulation material in the tubular space formed by the outside pillar of filled thermal insulation materials mouth and work core pipe, expand gradually after foaming thermal-insulating reaction and extend to two ends, form heat-insulation layer, simultaneously in order to discharge original gas, the lateral wall at pillar two ends offers exhaust outlet, staff during foaming, must be had to observe exhaust outlet at any time, when being about to when there being insulation material discharge, artificial shutoff exhaust outlet, discharges from exhaust outlet to prevent insulation material immediately.This moulding process has following shortcoming: one, manual operation adds the quantity of operator, and because needs are observed and shutoff exhaust outlet, each station manipulation personnel must not be less than 3 people; Two, there is shutoff phenomenon not in time sometimes in manual operation, and foamed material will vomit from exhaust outlet, causes product rejection, also has potential safety hazard to operating personnel; Three, because exhaust outlet is positioned at the side of filling termination, chamber, exhaust effect is not good, has portion gas and is wrapped up by the foamed material reacted rapidly and form pore, affect product quality; Four, production efficiency is low, and production cost is high.

Summary of the invention

The object of this invention is to provide that a kind of technique is simple, production efficiency is high, smooth in exhaust, exhaust link carry out Artificial Control without the need to operating personnel, it is artificial to save, production cost reduces can self-bleeding insulating tube moulding process, overcomes the deficiencies in the prior art.

Of the present invention can self-bleeding insulating tube moulding process, step is as follows:

1., also evenly multiple bracing frame is fixed at the outside spacers of work core pipe;

2., be contained in the outside of described multiple bracing frames by middle part with the outer protective pipe sleeve of filled thermal insulation materials mouth, keep outer pillar and work core pipe confronting coaxial;

3., outside the two ends of pillar all end socket is set, described end socket is sleeved on described work core pipe; There is seam the inner side of described end socket, and the termination point casing of outer pillar is contained in the outside of described seam; End socket is provided with open-work, is provided with venting plug at the inner port place of open-work, venting plug is arranged with multiple steam vent; The diameter of described steam vent is 1.2 millimeters ~ 2 millimeters.

There is the edge extended laterally the inner of described venting plug, and edge rides against on the medial surface of described end socket, venting plug has the part of multiple steam vent be positioned at described open-work.

Of the present invention can self-bleeding insulating tube moulding process, due to exhaust structure unlike the prior art, therefore compared with prior art tool has the following advantages: can realize automatic vent in foaming process, smooth in exhaust, without the need to manual observation and shutoff exhaust outlet, the diameter of each steam vent on venting plug is below 1.2 millimeters, can exhaust be ensured and not leak material (foamed material), intraluminal pressure can be kept again, the density of foam is made to reach product standard requirement, reduce human cost 50%, process-cycle shortens nearly 20%, the quality problems because exhausting problem occurs are stopped, operational security have also been obtained remarkable improvement.Technique is simple, and production efficiency is high.

Accompanying drawing explanation

Fig. 1 be work in the present invention core pipe, outer pillar, bracing frame and end socket package assembly signal drawing;

Fig. 2 is the A portion close-up schematic view shown in Fig. 1;

Fig. 3 is the structural representation of venting plug in the present invention;

Fig. 4 is that schematic diagram is looked on the left side shown in Fig. 3.

Detailed description of the invention

As shown in Figure 1, 2: of the present invention can self-bleeding insulating tube moulding process, step is as follows:

1., also evenly multiple bracing frame 2 is fixed at the outside spacers of work core pipe 4;

2., be sleeved on the outside of multiple bracing frame 2 by middle part with the outer pillar 1 of filled thermal insulation materials mouth 3, keep outer pillar 1 and work core pipe 4 confronting coaxial;

3., outside the two ends of pillar 4 end socket 6 is all set, end socket 6 is sleeved on described work core pipe 4; There is seam the inner side of end socket 6, and the termination point casing of outer pillar 1 is contained in the outside of seam;

Existing frock and relevant device is utilized to complete above-mentioned three steps.

As shown in Figure 3,4: on end socket 6, be provided with open-work 7, be provided with venting plug 5 at the inner port place of open-work 7, venting plug 5 is arranged with multiple steam vent 8; The diameter of steam vent 8 is 1.2 millimeters ~ 2 millimeters, namely 1.2 millimeters or 1.4 millimeters or 1.6 millimeters or 1.8 millimeters or 2 millimeters.

There is the edge 9 extended laterally the inner of venting plug 5, and edge 9 rides against on the medial surface of end socket 6, venting plug 5 has the part of multiple steam vent 8 be positioned at open-work 7.

By filling foaming thermal-insulating in the cavity between the outside pillar 1 of filled thermal insulation materials mouth 3 and work core pipe 4, expand to two ends gradually after reaction, and by steam vent 8 Exhaust Gas on venting plug 5, when expanded material arrives venting plug 5, there will not be squeeze-out phenomenon.Without the need to manual observation and plug-hole, save manpower, increase work efficiency, there is no potential safety hazard, cut down finished cost.

Claims

1. can a self-bleeding insulating tube moulding process, it is characterized in that: step is as follows:

1., also evenly multiple bracing frame (2) is fixed at the outside spacers of work core pipe (4);

2., be sleeved on the outside of described multiple bracing frames (2) by middle part with the outer pillar (1) of filled thermal insulation materials mouth (3), keep outer pillar (1) and work core pipe (4) confronting coaxial;

3., outside the two ends of pillar (4) end socket (6) is all set, described end socket (6) is sleeved on described work core pipe (4); There is seam the inner side of described end socket (6), and the termination point casing of outer pillar (1) is contained in the outside of described seam; End socket (6) is provided with open-work (7), is provided with venting plug (5) at the inner port place of open-work (7), venting plug (5) is arranged with multiple steam vent (8); The diameter of described steam vent (8) is 1.2 millimeters ~ 2 millimeters.

2. according to claim 1 can self-bleeding insulating tube moulding process, it is characterized in that: there is the edge (9) extended laterally the inner of described venting plug (5), edge (9) rides against on the medial surface of described end socket (6), venting plug (5) has the part of multiple steam vent (8) be positioned at described open-work (7).