Armored heat insulation pipe for flexible cable

Abstract

The utility model relates to the technical field of cables and cable assemblies, in particular to a flexible cable armored heat insulation pipe. The heat insulation pipeline is used for wrapping a cable, and the flanges are arranged at the two ends of the heat insulation pipeline. The heat insulation pipeline wraps an inner layer stainless steel corrugated pipe arranged on the outer surface of the cable in an attached mode. The outer-layer stainless steel corrugated pipe and the inner-layer stainless steel corrugated pipe are coaxially arranged, the outer-layer stainless steel corrugated pipe is arranged outside the inner-layer stainless steel corrugated pipe, and the heat insulation filling material is arranged between the inner-layer stainless steel corrugated pipe and the outer-layer stainless steel corrugated pipe and is silicon dioxide gel. The beneficial effects of the utility model are that the technical scheme realizes an armoring function through the stainless steel outer sleeve with a flexible structure, so that the flexible cable is protected, and the silicon dioxide gel is filled in the stainless steel outer sleeve, so that the cable can be adaptively used in a high-temperature or low-temperature environment, and the effect of isolation protection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe sleeves, in particular to a flexible cable armored heat-insulating pipe. Background Art

[0002] Generally, a cable refers to a wire made of one or more mutually insulated conductors and an outer insulating protective layer, which transmits electricity or information from one place to another. The application places of cables and optical cables are relatively complex, and these complex places pose challenges to the safe operation of cables. Fire hazards and ultra-low temperatures are one of the most important factors affecting the safe operation of cables. How to ensure the normal operation of cables in high-temperature environments is a technical problem that cable manufacturing enterprises need to solve.

[0003] In the prior art, the heat-insulating effect of cables is poor and the structure is complex.

[0004] Therefore, it is necessary to design a flexible cable armored heat-insulating pipe to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a flexible cable armored heat-insulating pipe to overcome the above-mentioned deficiencies existing in the current prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A flexible cable armored heat-insulating pipe includes a heat-insulating pipe for wrapping a cable, and flanges provided at both ends of the heat-insulating pipe. The heat-insulating pipe wraps an inner-layer stainless steel corrugated pipe disposed on the outer surface of the cable, an outer-layer stainless steel corrugated pipe coaxially disposed with the inner-layer stainless steel corrugated pipe and located outside the inner-layer stainless steel corrugated pipe, and a heat-insulating filling material disposed between the inner-layer stainless steel corrugated pipe and the outer-layer stainless steel corrugated pipe. The heat-insulating filling material is silica gel.

[0008] Preferably, the surfaces of the inner-layer stainless steel corrugated pipe and the outer-layer stainless steel corrugated pipe are provided with mirror layers.

[0009] Preferably, the distance between the inner-layer stainless steel corrugated pipe and the outer-layer stainless steel corrugated pipe is between 0.3 mm and 50 mm, and the thicknesses of the inner-layer stainless steel corrugated pipe and the outer-layer stainless steel corrugated pipe are between 0.1 mm and 0.8 mm.

[0010] Preferably, screw holes are further provided on the flange.

[0011] The beneficial effects of the present utility model are as follows: Through the stainless-steel outer sleeve with a flexible structure, the armoring function is realized, so that the soft cable can be protected. And silica gel is filled inside the stainless-steel outer sleeve, enabling it to be adapted for use in both high-temperature and low-temperature environments, achieving the effect of isolation and protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of a flexible cable armored heat-insulating pipe of the present utility model;

[0013] In the figure: 1, flange; 2, inner-layer stainless-steel bellows; 3, outer-layer stainless-steel bellows; 4, heat-insulating filling material; 11, screw hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0015] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0016] Refer to Figure 1 , a flexible cable armored heat-insulating pipe, which includes a heat-insulating pipe for wrapping the cable, and flanges 1 provided at both ends of the heat-insulating pipe;

[0017] The heat-insulating pipe wraps an inner-layer stainless-steel bellows 2 disposed on the outer surface of the cable, an outer-layer stainless-steel bellows 3 coaxially disposed with the inner-layer stainless-steel bellows and located outside the inner-layer stainless-steel bellows, and a heat-insulating filling material 4 disposed between the inner-layer stainless-steel bellows and the outer-layer stainless-steel bellows;

[0018] The heat-insulating filling material is silica gel, and the silica gel is evenly and densely filled between the inner-layer stainless-steel bellows and the outer-layer stainless-steel bellows, and the thermal conductivity of the silica gel is lower than that of air, about 0.02 W / (m·k);

[0019] The inner and outer stainless steel bellows are provided with a mirror layer on their surfaces, which can efficiently reflect infrared waves and further block the heat transfer by radiation.

[0020] The distance between the inner and outer stainless steel bellows is between 0.3 mm and 50 mm, and the thickness of the inner and outer stainless steel bellows is between 0.1 mm and 0.8 mm. The stainless steel materials are 316L, 316, 304, 201, etc.

[0021] The flange is also provided with screw holes 11 for fixed connection in cooperation with other structures. The flanges at both ends can be simplified into a ring. The inner ring of the ring is welded to the inner stainless steel bellows, and the outer ring of the ring is welded to the outer stainless steel bellows.

[0022] Specific usage cases

[0023] In high-temperature heat insulation scenarios:

[0024] The silica gel is composed of solid silica gel particles with ultra-high purity, no high-temperature decomposition volatiles, and a porosity of more than 99%. The particle size does not exceed 33% of the distance between the two-layer stainless steel bellows.

[0025] The silica gel particles are in close contact with each other, and the silica gel particles are in close contact with the stainless steel bellows. They are not easily displaced significantly under external forces. When the heat insulation pipe is bent, it can still support the inner and outer stainless steel bellows from direct contact, thus ensuring the heat insulation function of the heat insulation pipe during bending.

[0026] In high-temperature heat insulation scenarios, when the heat source is outside the outer bellows, it can ensure that heat is not easily intruded into the inner bellows. When the heat source is inside the inner bellows, it can ensure that heat is not easily dissipated outside the outer bellows.

[0027] In low-temperature heat insulation scenarios:

[0028] The silica gel can be made into a silica gel felt with glass fiber, polyester fiber, polyethylene fiber, plant fiber, etc., and then evenly and completely wrapped around the outside of the inner stainless steel bellows, with the number of wrapping layers being at least 1 layer.

[0029] Both ends of the inner and outer stainless steel bellows are welded to the flange plate, generally using laser welding to achieve airtight sealing.

[0030] In the low-temperature heat insulation scenario, when the cold source is outside the outer corrugated pipe, it can ensure that the cold quantity is not easily intruded into the inner corrugated pipe. When the heat and cold are inside the inner corrugated pipe, it can ensure that the cold quantity is not easily dissipated outside the outer corrugated pipe.

[0031] In addition, for the realization of the high-temperature vacuum state, the manufacturing of a stainless steel vacuum cup can be referred to.

[0032] For the realization of the low-temperature vacuum state, it can be achieved by evacuating with an externally mounted vacuum pump.

[0033] In order to be applicable to other scenarios, the stainless steel corrugated pipe can also be replaced with a stainless steel pipe, changing from flexible to rigid.

[0034] The beneficial effects of the present utility model are as follows: Through the stainless steel outer sleeve with a flexible structure, the function of armor is realized, so that the soft cable can be protected. And silica gel is filled inside the stainless steel outer sleeve, which can be adapted to use in both high-temperature and low-temperature environments, achieving the effect of isolation and protection.

[0035] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent replacements or changes should be covered within the protection scope of the present utility model.

Claims

1. A flexible cable armored insulation tube, characterized in that: It wraps an insulated pipe used to wrap cables, flanges are arranged at both ends of the insulated pipe, the insulated pipe wraps an inner stainless steel bellows arranged on the outer surface of the cable, an outer stainless steel bellows that is coaxially arranged with the inner stainless steel bellows and placed outside the inner stainless steel bellows, and an insulating filling material placed between the inner stainless steel bellows and the outer stainless steel bellows, and the insulating filling material is silica gel.

2. The flexible cable armored thermal insulation tube according to claim 1, characterized in that: The surfaces of the inner stainless steel corrugated pipe and the outer stainless steel corrugated pipe are provided with a mirror layer.

3. The flexible cable armored insulation tube according to claim 1, characterized in that: The distance between the inner stainless steel corrugated pipe and the outer stainless steel corrugated pipe is between 0.3 mm and 50 mm, and the thickness of the inner stainless steel corrugated pipe and the outer stainless steel corrugated pipe is between 0.1 mm and 0.8 mm.

4. The flexible cable armored thermal insulation tube according to claim 1, characterized in that: The flange is also provided with screw holes.

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