CN211083132U

CN211083132U - Fireproof and heat-resistant PE pipe

Info

Publication number: CN211083132U
Application number: CN201922303885.3U
Authority: CN
Inventors: 叶观群
Original assignee: Anhui Wanan Environment Technology Co ltd
Current assignee: Anhui Wanan Environment Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-07-24
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a heat-resisting PE tubular product of fire prevention in drainage pipe technical field, include: the heat insulation layer wraps the outer wall of the pipe body, integrally-formed reinforcing ribs are symmetrically arranged at two ends of the outer wall of the pipe body, an inner cavity of the pipe body and the heat-resistant layer are formed, and integrally-formed wire grooves are uniformly formed in the circumferential inner wall of the heat-resistant layer; the asbestos net coating layer is sleeved outside the heat insulation layer; the fireproof braided layer is wrapped on the circumferential outer wall of the asbestos net wrapping layer; fireproof coating layer, its even coating is on the fire prevention weaving layer, the utility model discloses simple structure, reasonable in design uses through the cooperation of fireproof coating, asbestos stratum reticulare and fire prevention weaving layer, very big reinforcing the fire behavior of tubular product, and the heat resistance who makes by moulding aluminum plate book is set up at the inner wall of tubular product simultaneously, improves the heat resistance of tubular product, has that insulation can is efficient, coefficient of thermal conductivity is low and high temperature resistance characteristics.

Description

Fireproof and heat-resistant PE pipe

Technical Field

The utility model relates to a drainage pipe technical field specifically is a heat-resisting PE tubular product prevents fires.

Background

PE is polyethylene plastic, the most basic plastic, plastic bags, preservative films and the like are PE, and HDPE is a nonpolar thermoplastic resin with high crystallinity. The appearance of the original HDPE is milky white, and the micro-thin section is semitransparent to a certain degree. PE has excellent resistance to most domestic and industrial chemicals. The PE pipe includes a medium density polyethylene pipe and a high density polyethylene pipe. The series was classified according to wall thickness as SDR11 and SDR 17.6. The former is suitable for conveying gaseous artificial gas, natural gas and liquefied petroleum gas, and the latter is mainly used for conveying natural gas. Compared with a steel pipe, the construction process is simple, has certain flexibility, and is mainly not used for anticorrosion treatment, so that a large number of working procedures are saved. The disadvantage is that the device is not as good as steel pipe, the safety space of thermal heating is specially paid attention to in construction, and the device can not be exposed in the sun in the air and is sensitive to chemical substances, thus preventing the sewage pipeline from being leaked to cause damage.

The PE pipe used as a water supply and drainage pipe also has certain defects, and on one hand, the pipe made of the PE material generally has the defect of poor flame retardant property because the PE material is a flammable polymer. In order to be used safely, the flame retardant is added into the PE pipe to improve the flame retardant performance of the PE pipe, but the flame retardant causes certain harm to the environment more or less, and is not suitable for being used in a large range. Therefore, we propose a fireproof and heat-resistant PE pipe to be put into use to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat-resisting PE tubular product of fire prevention to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a flame and heat resistant PE pipe comprising:

the heat insulation layer wraps the outer wall of the pipe body, integrally-formed reinforcing ribs are symmetrically arranged at two ends of the outer wall of the pipe body, an inner cavity of the pipe body and the heat-resistant layer are formed, and integrally-formed wire grooves are uniformly formed in the circumferential inner wall of the heat-resistant layer;

the asbestos net coating layer is sleeved outside the heat insulation layer;

the fireproof braided layer is wrapped on the circumferential outer wall of the asbestos net wrapping layer;

and the fireproof coating layer is uniformly coated on the fireproof woven layer.

Preferably, the heat-resistant layer is formed by bonding and rolling plastic aluminum plates through hot melt adhesive, and is combined with the inner cavity of the pipe body into a whole through the hot melt adhesive.

Preferably, the fireproof woven layer is formed by weaving phenolic fibers and melamine fibers in a mixed mode.

Preferably, the fireproof coating layer is an intumescent organic flame retardant layer.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses simple structure, reasonable in design uses through the cooperation of fire retardant coating, asbestos stratum reticulare and fire prevention weaving layer, very big reinforcing the fire behavior of tubular product, and the heat resistance that is made by moulding aluminum plate roll at the inner wall setting of tubular product simultaneously improves the heat resistance of tubular product, has the efficient, the low and high temperature resistance characteristics of coefficient of thermal conductivity of insulation can.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view of the tube body of the present invention.

In the figure: 1 body, 11 heat-resistant layer, 12 wire casings, 2 strengthening ribs, 3 insulating layers, 4 asbestos mesh coating layers, 5 fireproof weaving layers and 6 fireproof coating layers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, the present invention provides a technical solution: a flame and heat resistant PE pipe comprising:

the heat insulation layer 3 wraps the outer wall of the pipe body 1, integrally-formed reinforcing ribs 2 are symmetrically arranged at two ends of the outer wall of the pipe body 1, an inner cavity of the pipe body 1 and the heat-resistant layer 11 are formed, and integrally-formed wire grooves 12 are uniformly formed in the circumferential inner wall of the heat-resistant layer 11;

the asbestos net coating layer 4 is sleeved outside the heat insulation layer 3;

the fireproof braided layer 5 is wrapped on the circumferential outer wall of the asbestos net wrapping layer 4;

and the fireproof coating layer 6 is uniformly coated on the fireproof woven layer 5.

The heat-resistant layer 11 is formed by bonding and rolling plastic aluminum plates through hot melt adhesive, and is compounded with the inner cavity of the pipe body 1 into a whole through the hot melt adhesive, the fireproof weaving layer 5 is formed by weaving phenolic fibers and melamine fibers in a mixed mode, and the fireproof coating layer 6 is an expansion type organic flame retardant layer.

The working principle is that the PE pipe is placed in a closed container, air in the container is pumped out, the pressure is reduced to be below 0.88 to 2.45 × 105Pa, after 0.25 to 1.5 hours, fireproof coating liquid is injected and pressurized to be 1.2MPa, the pressure is kept for 7 hours at 65 ℃, an expansive fireproof coating layer 6 is formed on the surface of the PE pipe, the expansive fireproof coating layer 6 is thin and can be made into a smooth plane, the decorative effect is good, the expansion foaming can be rapidly realized under the action of high temperature or heat radiation, a firmer and tighter spongy heat insulation foam layer or hollow foam layer is formed, flame can not directly act on a combustible base material, the propagation and spread of flame on the base material are effectively prevented, the base material is subjected to heat insulation protection, after the fireproof woven layer 5 is contacted with flame or a hot object, the ignition or the combustion can be stopped, the pipe body 1 is protected from flame burning, meanwhile, a heat-resistant layer 11 made of plastic is compounded in the inner cavity of the pipe body 1, the heat-resistant performance, the heat-resistant coefficient is low, the high-resistant hot-melt adhesive can be simultaneously, the heat-resistant wire groove can be formed, and the novel heat-resistant wire groove structure can be reasonably designed, and the novel heat-resistant wire groove can be suitable for the high.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A fireproof and heat-resistant PE pipe is characterized in that: the method comprises the following steps:

the heat insulation layer (3) wraps the outer wall of the pipe body (1), integrally-formed reinforcing ribs (2) are symmetrically arranged at two ends of the outer wall of the pipe body (1), an inner cavity of the pipe body (1) and the heat-resistant layer (11) are formed, and integrally-formed wire grooves (12) are uniformly formed in the circumferential inner wall of the heat-resistant layer (11);

the asbestos net coating layer (4) is sleeved outside the heat insulation layer (3);

the fireproof braided layer (5) is wrapped on the circumferential outer wall of the asbestos mesh wrapping layer (4);

and the fireproof coating layer (6) is uniformly coated on the fireproof woven layer (5).

2. The flame-resistant and heat-resistant PE pipe material according to claim 1, wherein: the heat-resistant layer (11) is formed by bonding and rolling plastic aluminum plates through hot melt adhesive and is compounded with the inner cavity of the pipe body (1) into a whole through the hot melt adhesive.

3. The flame-resistant and heat-resistant PE pipe material according to claim 1, wherein: the fireproof woven layer (5) is formed by mixing and weaving phenolic fibers and melamine fibers.

4. The flame-resistant and heat-resistant PE pipe material according to claim 1, wherein: the fireproof coating layer (6) is an intumescent organic flame retardant layer.