阅读说明：本技术 一种机车车辆用感温电缆 (Temperature sensing cable for rolling stock ) 是由 李芃 于 2020-06-02 设计创作，主要内容包括：本发明公开了一种机车车辆用感温电缆,包括两个钢芯导体,所述钢芯导体的外部均设置有热敏绝缘层,所述钢芯导体包裹于热敏绝缘层的内部,两个所述热敏绝缘层连接处的两侧均设置有金属条,所述金属条的外壁与两个热敏绝缘层的外壁相切设置,两个所述热敏绝缘层的外部设置有弹性金属线,所述弹性金属线绕设于两个热敏绝缘层和两个金属条组成整体的外部,所述弹性金属线的外部固定绕设有弹性橡胶带。本发明通过在两个热敏绝缘层的接触处放置金属条,并将弹性金属线紧密绕设在外部,热敏绝缘层融化时,可以使得金属条、弹性金属线以及两个钢芯导体紧密接触,提高两个钢芯导体导电的精准性,增强了缆线使用的实用性。(The invention discloses a temperature sensing cable for rolling stock, which comprises two steel core conductors, wherein heat-sensitive insulating layers are respectively arranged outside the steel core conductors, the steel core conductors are wrapped inside the heat-sensitive insulating layers, metal strips are respectively arranged on two sides of the joint of the two heat-sensitive insulating layers, the outer walls of the metal strips are arranged in a tangent mode with the outer walls of the two heat-sensitive insulating layers, elastic metal wires are arranged outside the two heat-sensitive insulating layers, the elastic metal wires are wound on the outer portions of the two heat-sensitive insulating layers and the two metal strips which form a whole, and elastic rubber belts are fixedly wound on the outer portions of the elastic metal wires. According to the invention, the metal strip is placed at the contact position of the two thermosensitive insulating layers, and the elastic metal wire is tightly wound outside, so that the metal strip, the elastic metal wire and the two steel core conductors can be tightly contacted when the thermosensitive insulating layers are melted, the conductive accuracy of the two steel core conductors is improved, and the use practicability of the cable is enhanced.)

1. The utility model provides a temperature sensing cable for rolling stock, includes two steel core conductors (1), its characterized in that: the heat-sensitive insulating layers (2) are arranged outside the steel core conductor (1), the steel core conductor (1) is wrapped inside the heat-sensitive insulating layers (2), metal strips (3) are arranged on two sides of the joint of the two heat-sensitive insulating layers (2), the outer walls of the metal strips (3) are arranged in a tangent mode with the outer walls of the two heat-sensitive insulating layers (2), elastic metal wires (4) are arranged outside the two heat-sensitive insulating layers (2), the elastic metal wires (4) are wound on the outer portion of the whole formed by the two heat-sensitive insulating layers (2) and the two metal strips (3), elastic rubber belts (5) are fixedly wound on the outer portions of the elastic metal wires (4), metal powder filling layers (13) are filled between the inner portions of the elastic rubber belts (5) and the outer portions of the two heat-sensitive insulating layers (2), mica belt layers (6) are fixedly wound on the outer portions of the elastic rubber belts (5), the utility model discloses a mica tape layer, including mica tape layer (6), the outside fixed cover of mica tape layer (6) is equipped with buffer layer (7), it has flame retardant coating (8) to fill between the inside of buffer layer (7) and the outside of mica tape layer (6), the outside fixedly connected with sand grip (10) of buffer layer (7), adjacent two be provided with support bar (9) between sand grip (10), the outside fixed cover of buffer layer (7) is equipped with shielding layer (11), the outside fixed cover of shielding layer (11) is equipped with oversheath (12).

2. The temperature-sensitive cable for a rolling stock according to claim 1, wherein: the winding pitch of the elastic metal wire (4) is set to be 1 mm.

3. The temperature-sensitive cable for a rolling stock according to claim 1, wherein: the metal powder filling layer (13) is arranged as an aluminum powder filling layer.

4. The temperature-sensitive cable for a rolling stock according to claim 1, wherein: the fire-resistant layer (8) is arranged as a fire-resistant silicon rubber filling layer.

5. The temperature-sensitive cable for a rolling stock according to claim 1, wherein: the quantity of the outside sand grip (10) of buffer layer (7) sets up to a plurality ofly, and is a plurality of sand grip (10) evenly distributed is in the outside of buffer layer (7), just sand grip (10) and the central line parallel arrangement of buffer layer (7).

6. The temperature-sensitive cable for a rolling stock according to claim 1, wherein: the support bar (9) is a nylon member.

7. The temperature-sensitive cable for a rolling stock according to claim 1, wherein: an adhesive layer is filled between the shielding layer (11) and the buffer layer (7).

8. The temperature-sensitive cable for a rolling stock according to claim 1, wherein: the winding directions of the elastic rubber belt (5) and the mica belt layer (6) are opposite.

Technical Field

The invention relates to the technical field of rail transit, in particular to a temperature sensing cable for a rolling stock.

Background

The temperature sensing cable, also called a linear temperature sensing fire detector, has the capability of continuously monitoring the temperature of a protected object along the whole linear length, and in rail traffic, such as high-speed rails, motor cars, subways and the like, in order to ensure the running safety of the locomotive, the internal and external environments of the locomotive need to be monitored in real time to ensure the normal running of the locomotive, and because the lengths of the locomotive monomers are large, the temperature sensing cable is preferably used for monitoring the temperature in the locomotive;

Disclosure of Invention

The invention aims to provide a temperature sensing cable for rolling stock, which is characterized in that a metal strip is placed at the contact position of two heat-sensitive insulating layers, and an elastic metal wire is tightly wound outside, so that the metal strip, the elastic metal wire and two steel core conductors can be tightly contacted when the heat-sensitive insulating layers are melted, the conductive accuracy of the two steel core conductors is improved, and the defects in the prior art are overcome.

In order to achieve the above purpose, the invention provides the following technical scheme: a temperature sensing cable for rolling stock comprises two steel core conductors, wherein heat-sensitive insulating layers are arranged outside the steel core conductors, the steel core conductors are wrapped inside the heat-sensitive insulating layers, metal strips are arranged on two sides of the joint of the two heat-sensitive insulating layers, the outer walls of the metal strips are arranged in a tangent mode with the outer walls of the two heat-sensitive insulating layers, elastic metal wires are arranged outside the two heat-sensitive insulating layers and are wound outside the whole formed by the two heat-sensitive insulating layers and the two metal strips, an elastic rubber belt is fixedly wound outside the elastic metal wires, a metal powder filling layer is filled between the inside of the elastic rubber belt and the outside of the two heat-sensitive insulating layers, a mica tape layer is fixedly wound outside the elastic rubber belt, a buffer layer is fixedly sleeved outside the mica tape layer, and a fire-resistant layer is filled between the inside of the buffer layer and the outside of the mica tape layer, the outside fixedly connected with sand grip of buffer layer, adjacent two be provided with the support bar between the sand grip, the outside fixed cover of buffer layer is equipped with the shielding layer, the fixed cover in outside of shielding layer is equipped with the oversheath.

Preferably, the winding pitch of the elastic metal wire is set to be 1 mm.

Preferably, the metal powder filling layer is an aluminum powder filling layer.

Preferably, the fire-resistant layer is provided as a fire-resistant silicone rubber filling layer.

Preferably, the quantity of the outside sand grip of buffer layer sets up to a plurality ofly, and is a plurality of sand grip evenly distributed is in the outside of buffer layer, just sand grip and the central line parallel arrangement of buffer layer.

Preferably, the support bar is provided as a nylon member.

Preferably, an adhesive layer is filled between the shielding layer and the buffer layer.

Preferably, the winding direction of the elastic rubber belt is opposite to that of the mica belt layer.

In the technical scheme, the invention provides the following technical effects and advantages:

according to the invention, the metal strip is placed at the contact position of the two thermosensitive insulating layers, the elastic metal wire is tightly wound outside, so that the two thermosensitive insulating layers are tightly contacted with the two metal strips, the metal strip can be used as an auxiliary support to enhance the overall strength of the cable, and when the external temperature is too high, so that the thermosensitive insulating layers are melted, the metal strip, the elastic metal wire and the two steel core conductors are tightly contacted, therefore, the two steel core conductors can be also in conductive connection through the metal strip or the elastic metal wire, so that the conductive accuracy of the two steel core conductors is improved, the reaction sensitivity of the cable after the thermosensitive insulating layers are fused is improved, and the use practicability of the cable is enhanced.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

FIG. 3 is an enlarged view of the portion A of FIG. 2 according to the present invention.

Description of reference numerals:

1. a steel core conductor; 2. a heat-sensitive insulating layer; 3. a metal strip; 4. an elastic metal wire; 5. an elastic rubber band; 6. a mica tape layer; 7. a buffer layer; 8. a refractory layer; 9. a supporting strip; 10. a convex strip; 11. a shielding layer; 12. an outer sheath; 13. and a metal powder filling layer.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

The invention provides a temperature sensing cable for rolling stock as shown in figures 1-3, which comprises two steel core conductors 1, wherein heat-sensitive insulating layers 2 are respectively arranged outside the steel core conductors 1, the steel core conductors 1 are wrapped inside the heat-sensitive insulating layers 2, metal strips 3 are respectively arranged on two sides of the joint of the two heat-sensitive insulating layers 2, the outer walls of the metal strips 3 are tangent to the outer walls of the two heat-sensitive insulating layers 2, elastic metal wires 4 are arranged outside the two heat-sensitive insulating layers 2, the elastic metal wires 4 are wound outside the two heat-sensitive insulating layers 2 and the two metal strips 3, an elastic rubber belt 5 is fixedly wound outside the elastic metal wires 4, a metal powder filling layer 13 is filled between the inside of the elastic rubber belt 5 and the outside of the two heat-sensitive insulating layers 2, a mica belt layer 6 is fixedly wound outside the elastic rubber belt 5, a buffer layer 7 is fixedly sleeved outside the mica tape layer 6, a fireproof layer 8 is filled between the inside of the buffer layer 7 and the outside of the mica tape layer 6, convex strips 10 are fixedly connected to the outside of the buffer layer 7, a support strip 9 is arranged between every two adjacent convex strips 10, a shielding layer 11 is fixedly sleeved outside the buffer layer 7, and an outer sheath 12 is fixedly sleeved outside the shielding layer 11;

further, in the above technical solution, the winding pitch of the elastic metal wire 4 is set to 1mm, so as to ensure the wrapping density of the elastic metal wire 4 and ensure the accuracy of the contact between the elastic metal wire 4 and the steel core conductor 1 when the thermal insulation layer 2 is fused;

further, in the above technical solution, the metal powder filling layer 13 is configured as an aluminum powder filling layer, so that the possibility of conducting electricity of the two steel core conductors 1 can be further improved when the heat-sensitive insulating layer 2 is fused by using the metal powder filling layer 13;

further, in the above technical scheme, the fire-resistant layer 8 is a fire-resistant silicone rubber filling layer, so that the fire resistance of the cable can be improved;

furthermore, in the above technical solution, the number of the convex strips 10 outside the buffer layer 7 is set to be multiple, the convex strips 10 are uniformly distributed outside the buffer layer 7, and the convex strips 10 are arranged in parallel with the central line of the buffer layer 7, so that the overall strength of the cable body can be greatly improved, and the cable is prevented from being bent too much to cause the accidental breakage of the internal thermosensitive insulating layer 2;

further, in the above technical solution, the supporting bar 9 is a nylon member, so as to further improve the overall strength of the cable;

further, in the above technical scheme, an adhesive layer is filled between the shielding layer 11 and the buffer layer 7, so that the support bars 9 are conveniently and fixedly connected;

further, in the above technical solution, the winding directions of the elastic rubber belt 5 and the mica belt layer 6 are opposite, so as to enhance the firmness of the elastic rubber belt 5 in wrapping;