CN212342335U - Insulated fireproof heat insulation sleeve for wires and cables of high-speed train - Google Patents

Abstract

A high-speed train wire and cable insulation fireproof heat insulation sleeve comprises an inner sleeve and an outer protection barrel arranged outside the inner sleeve, wherein a heat insulation reflection part is arranged between the inner sleeve and the outer protection barrel; the heat insulation reflection part comprises a plurality of layers of heat insulation reflection units which are arranged in a stacked mode, and each heat insulation reflection unit comprises a nanometer heat insulation plate arranged in an annular mode and a reflection metal plate arranged on the inner side of the nanometer heat insulation plate. This application forms the installation cavity through outside between outer protection section of thick bamboo and the inner skleeve to in arranging the installation cavity in thermal-insulated reflection unit, utilize the ultralow heat conductivity ability of nanometer heat insulating board, with thermal conduction, fall to minimumly. A layer of reflective metal plate is arranged between each layer of nano heat insulation plate, the reflection effect of the reflective metal plate is utilized to reduce heat radiation, and meanwhile, the reflection and refraction heat is reflected to reduce the radiation heat transfer to the minimum.

Description

Insulated fireproof heat insulation sleeve for wires and cables of high-speed train

Technical Field

The application relates to an insulating fireproof heat insulation sleeve for wires and cables of a high-speed train.

Background

The wires and cables of the high-speed railway train power supply system need to be manufactured with fireproof heat shields, and the temperature of the cable position does not exceed 60 ℃ within 6 hours of a fire disaster on the premise of reducing the volume as much as possible, so that the normal operation of the power supply system of the high-speed railway train is ensured, and the sufficient accident rescue time is obtained. At present, most of train electric wires and cables are provided with glass fiber fireproof sleeves, and the outside of the train electric wires and cables is not provided with a fireproof heat shield, so that the train electric wires and cables can be rapidly powered off when a fire disaster happens. Some scientific research units and manufacturers research and popularize the heat insulation cover of the aluminum silicate fiber board special-shaped piece, the heat insulation cover of the aerogel felt and the like, but the requirements of fire prevention and heat insulation are not met, or the thickness is too large, so that the aluminum silicate fiber board special-shaped piece and the aerogel felt heat insulation cover are not suitable for being used in a power supply system of a train.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the application provides an insulating fireproof heat insulation sleeve for wires and cables of a high-speed train, which comprises an inner sleeve and an outer protection barrel arranged outside the inner sleeve, wherein a heat insulation reflection part is arranged between the inner sleeve and the outer protection barrel; the heat insulation reflection part comprises a plurality of layers of heat insulation reflection units which are arranged in a stacked mode, and each heat insulation reflection unit comprises a nanometer heat insulation plate arranged in an annular mode and a reflection metal plate arranged on the inner side of the nanometer heat insulation plate. This application forms the installation cavity through outside between outer protection section of thick bamboo and the inner skleeve to in arranging the installation cavity in thermal-insulated reflection unit, utilize the ultralow heat conductivity ability of nanometer heat insulating board, with thermal conduction, fall to minimumly. A layer of reflective metal plate is arranged between each layer of nano heat insulation plate, the reflection effect of the reflective metal plate is utilized to reduce heat radiation, meanwhile, reflection and refraction heat are reflected, the radiation heat transfer is reduced to the minimum, in addition, the air holes in the nano heat insulation plates are closed air holes with the aperture smaller than 50nm, the aperture is smaller than the free stroke of air molecules of 70nm, so that the nano heat insulation plates are made of 0 convection material, and air convection heat transfer cannot be generated.

Preferably, the reflective metal plate comprises a fixed part and a movable part, wherein the fixed part is fixedly arranged, the movable part is hinged to the fixed part, and a plurality of fixing mechanisms used for fixing the nanometer thermal insulation plate are arranged on the movable part.

Preferably, the fixing mechanism is a metal protrusion or a metal needle.

Preferably, the ratio of the length of the section where the fixing mechanism is located to the length of the whole section is 0.2-0.5.

Preferably, the fixing mechanisms of the adjacent heat insulation reflection units are symmetrically arranged.

Preferably, a through hole is formed in the reflecting metal plate, a screw rod penetrates through the through hole, one side of the screw rod, which is far away from the nanometer heat insulation plate, is connected through a bolt, and one side of the screw rod, which faces the nanometer heat insulation plate, is an arc-shaped head to form a fixing mechanism. This application is through carrying out the functionalization setting with the reflection metal tube for it can carry out the location operation to a certain extent to the nanometer heat insulating board, and utilize the non-mode that corresponds the setting, avoid producing the heat transfer bridge, especially have better assurance overall stability's effect under the situation that can rotate such as circular cross-section, the form that adopts the screw rod setting mainly can play the effect of nanometer heat insulating board about the contact, and be unlikely to run through whole nanometer heat insulating board and influence thermal-insulated effect.

Preferably, the thickness of the inner sleeve is 0.2-1 mm.

Preferably, the inner sleeve is square or round, and the inner sleeve is a galvanized iron sheet pipe or an aluminum sheet pipe. The inner protective layer adopts galvanized iron sheets or aluminum sheets and the like which do not resist high temperature, only plays a role in protection and support, can reduce the material cost, and can greatly reduce the investment cost by changing the galvanized iron sheets or the aluminum sheets and the like because the inner temperature is lower than 60 ℃ and does not bear high temperature after passing through the heat insulation layer.

Preferably, the number of layers of the heat insulation reflection unit is 3-5, the thickness of the nanometer heat insulation plate is 6-10mm, and the reflection metal plate is an aluminum foil or a polished aluminum plate.

Preferably, the outer protective cylinder is a SUS310 stainless steel plate protective cylinder, and the thickness of the outer protective cylinder is 0.5-1 mm.

This application can bring following beneficial effect:

1. this application forms the installation cavity through outside between outer protection section of thick bamboo and the inner skleeve to in arranging the installation cavity in thermal-insulated reflection unit, utilize the ultralow heat conductivity ability of nanometer heat insulating board, with thermal conduction, fall to minimumly. A layer of reflective metal plate is arranged between each layer of nano heat insulation plate, the reflection effect of the reflective metal plate is utilized to reduce heat radiation, and meanwhile, the heat is reflected and refracted, so that the radiation heat transfer is reduced to the minimum;

2. the reflecting metal pipe is functionally arranged, so that the reflecting metal pipe can perform positioning operation on the nanometer heat insulation plate to a certain degree, a heat transfer bridge is avoided by using a non-corresponding arrangement mode, and the reflecting metal pipe has a better effect of ensuring the overall stability particularly under the condition that a circular section and the like can rotate;

3. the middle heat insulation material mainly adopts a nanometer heat insulation plate and a reflection metal plate, compared with heat insulation materials such as fiber board special-shaped products and aerogel heat insulation products applied in the current market, the heat insulation performance is improved by more than 40%, and the fireproof heat insulation requirement can be met under the working condition that the total thickness does not exceed 60 mm.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural view of an insulated reflector unit;

fig. 4 is a schematic structural diagram of the fixing mechanism.

Detailed Description

In order to clearly explain the technical features of the present invention, the present application will be explained in detail by the following embodiments in combination with the accompanying drawings.

As shown in the drawings, the following detailed description is given by way of example in order to more clearly explain the overall concept of the present application.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In a first embodiment, as shown in fig. 1-4, an insulating fireproof heat insulation sleeve for wires and cables of a high-speed train comprises an inner sleeve 1 and an outer protective sleeve 2 arranged outside the inner sleeve 1, wherein a heat insulation reflection part 3 is arranged between the inner sleeve 1 and the outer protective sleeve 2; the heat insulation reflection part 3 comprises a plurality of layers of heat insulation reflection units 4 which are arranged in a stacked mode, and each heat insulation reflection unit 4 comprises a nanometer heat insulation plate 5 which is arranged in an annular mode and a reflection metal plate 6 which is arranged on the inner side of the nanometer heat insulation plate 5. The reflecting metal plate 6 comprises a fixed part 7 and a movable part 8, wherein the fixed part 7 is fixedly arranged, the movable part 8 is hinged to the fixed part 7, and a plurality of fixing mechanisms 9 used for fixing the nanometer heat insulation plate 5 are arranged on the movable part 8. The fixing mechanism 9 is a metal protrusion or a metal needle. The proportion of the length of the section where the fixing mechanism 9 is located to the length of the whole section is 0.2-0.5. The fixing mechanisms 9 of the adjacent heat insulation reflection units 4 are symmetrically arranged. The reflecting metal plate 6 is provided with a through hole, a screw rod 10 penetrates through the through hole, one side of the screw rod 10, which is far away from the nanometer heat insulation plate 5, is connected through a bolt 11, and one side of the screw rod 10, which faces the nanometer heat insulation plate 5, is an arc-shaped head forming fixing mechanism 9. The thickness of the inner sleeve is 0.2-1 mm. The inner sleeve is square or round, and the inner sleeve is a galvanized iron sheet pipe or an aluminum sheet pipe. The number of layers of the heat insulation reflection unit 4 is 3-5, the thickness of the nanometer heat insulation plate is 6-10mm, and the reflection metal plate 6 is an aluminum foil or a polished aluminum plate. The outer protection cylinder 2 is an SUS310 stainless steel plate protection cylinder, and the thickness of the outer protection cylinder 2 is 0.5-1 mm.

When the cable is used, firstly, the nanometer thermal insulation board 5 and the reflective metal plate 6 are combined into the thermal insulation reflective unit 4, then the inner sleeve is sleeved outside the cable, the thermal insulation reflective unit 4 is sequentially sleeved outside the inner sleeve, and then the outer protective sleeve 2 is sleeved on the outermost side to complete installation. Compared with heat insulation materials such as fiberboard special-shaped products and aerogel heat insulation products applied to the current market, the heat insulation performance is improved by more than 40%, and the requirement of fire prevention and heat insulation can be met under the working condition that the total thickness does not exceed 60 mm.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. The utility model provides a high-speed train wire and cable insulation fire prevention radiation shield, its characterized in that: comprises an inner sleeve and an outer protection barrel arranged outside the inner sleeve, wherein a heat insulation reflection part is arranged between the inner sleeve and the outer protection barrel; the heat insulation reflection part comprises a plurality of layers of heat insulation reflection units which are arranged in a stacked mode, and each heat insulation reflection unit comprises a nanometer heat insulation plate arranged in an annular mode and a reflection metal plate arranged on the inner side of the nanometer heat insulation plate.

2. The high-speed train wire and cable insulation fireproof heat insulation sleeve as claimed in claim 1, wherein: the reflecting metal plate comprises a fixed part and a movable part, wherein the fixed part is fixedly arranged, the movable part is hinged to the fixed part, and a plurality of fixing mechanisms used for fixing the nanometer heat insulation plate are arranged on the movable part.

3. The high-speed train wire and cable insulation fireproof heat insulation sleeve as claimed in claim 2, wherein: the fixing mechanism is a metal protrusion or a metal needle.

4. The high-speed train wire and cable insulation fireproof heat insulation sleeve as claimed in claim 2, wherein: the proportion of the length of the section where the fixing mechanism is located to the length of the whole section is 0.2-0.5.

5. The high-speed train wire and cable insulation fireproof heat insulation sleeve as claimed in claim 4, wherein: the fixing mechanisms of the adjacent heat insulation reflection units are symmetrically arranged.

6. The high-speed train wire and cable insulation fireproof heat insulation sleeve as claimed in claim 2, wherein: the reflecting metal plate is provided with a through hole, a screw rod is arranged in the through hole in a penetrating mode, one side, away from the nanometer heat insulation plate, of the screw rod is connected through a bolt, and one side, facing the nanometer heat insulation plate, of the screw rod is an arc-shaped head forming fixing mechanism.

7. The high-speed train wire and cable insulation fireproof heat insulation sleeve as claimed in claim 1, wherein: the thickness of the inner sleeve is 0.2-1 mm.

8. The high-speed train wire and cable insulation fire-proof heat insulation sleeve according to claim 7, characterized in that: the inner sleeve is square or round, and the inner sleeve is a galvanized iron sheet pipe or an aluminum sheet pipe.

9. The high-speed train wire and cable insulation fireproof heat insulation sleeve as claimed in claim 1, wherein: the number of layers of the heat insulation reflection unit is 3-5, the thickness of the nanometer heat insulation plate is 6-10mm, and the reflection metal plate is an aluminum foil or a polished aluminum plate.

10. The high-speed train wire and cable insulation fireproof heat insulation sleeve as claimed in claim 1, wherein: the outer protective cylinder is an SUS310 stainless steel plate protective cylinder, and the thickness of the outer protective cylinder is 0.5-1 mm.

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