ES2235619A1 - Protection tube, has multiple twisted threads whose inner side contains multiple metallic wires - Google Patents

Abstract

The tube has multiple twisted threads (1) whose inner side contains multiple metallic wires.

Description

High resistant protection tube temperatures

The present invention relates to a tube of high temperature resistant protection, for example for Mechanical and thermal protection of the automobile exhaust pipe.

Background of the invention

At present, protection tubes are used to protect electrical conductors and other components, especially The car field.

These protection tubes must combine different characteristics that make them suitable for this type of utilization.

First, the protection tubes must have a great mechanical and thermal resistance, since they are used in High temperature areas that are subject to abrasion.

In addition, these protection tubes must also include noise isolation characteristics, as it would be unacceptable that these protective tubes produced noise when They use in cars.

To solve these problems there are great number of protection tubes that combine these characteristics and which are currently used for cable protection in cars

One of the most important features that they have to have these protective tubes is high resistance temperatures

Currently there are protection tubes formed by a plurality of braided fiberglass threads knitted and knitted together and coated with an emulsion of sylicon. These protection tubes are used to achieve a Good thermal insulation.

These types of protection tubes comply with their objective but cannot withstand vibrations at very hot temperatures high, such as above 700 ° C for fiber glass and 1200 ° C for silica fibers. This is because the fibers lose mechanical properties at these temperatures so high, which prevents using these protection tubes in the automobile exhaust pipes, for example.

Description of the invention

With the protection tube of the invention, They manage to solve the aforementioned problems, presenting other advantages to be described.

The protection tube of the present invention comprises plurality of braided, knitted or knitted threads each other, characterized by the fact that said threads comprise Inside one or more metal wires.

According to a preferred embodiment, said wires Metallic are stainless steel.

Preferably, said threads are of fiber of glass or silica and may be coated with an emulsion of silicone.

With the protection tube of the present invention achieves great thermal and mechanical resistance, even at very high temperatures above 700ºC and 1200ºC, since metal wires provide more resistance mechanics.

Brief description of the drawings

For a better understanding of how much has been exposed Some drawings are accompanied in which, schematically and only to non-limiting example title, a case study of realization.

Figure 1 is a schematic sectional view. cross section of the protection tube of the present invention; Y

Figure 2 is a detail of one of said threads sectioned

Description of a preferred embodiment

As can be seen in the figures, the protection tube of the present invention is formed by a plurality of strands 1 braided, knitted or knitted between yes. Said threads 1 are made of fiberglass or silica and are coated with a silicone emulsion 2.

According to the invention, each of these threads inside it comprises a metallic wire 3, which preferably It is made of stainless steel.

As stated earlier, thanks to the presence of the metallic wire inside the wires is possible to use in a protection tube of the present invention in places subject to vibrations at very high temperatures, even higher than 700ºC and 1200ºC depending on the material, for example in the exhaust pipes of cars.

Although reference has been made to a Concrete embodiment of the invention is evident to an expert in the matter that the described protection tube is susceptible to numerous variations and modifications, and that all the details mentioned can be substituted by others technically equivalent, without departing from the scope of protection defined by the attached claims.

Claims (4)

1. High temperature resistant protection tube, comprising a plurality of strands (1) twisted, knitted or knitted together, characterized in that said threads (1) comprise one or more metal wires (3). 2. Protection tube according to claim 1, characterized in that said metal wires (3) are made of stainless steel. 3. Protection tube according to claim 1, characterized in that said threads (1) are made of fiberglass or silica. 4. Protection tube according to claim 1 or 3, characterized in that said threads (1) are coated with a silicone emulsion (2).