Corrosion-resistant double-sheath gas guide cable for liquid level transmitter

Abstract

The utility model discloses a corrosion-resistant double-layer sheath gas guide cable for a liquid level transmitter, which belongs to the technical field of cables, comprises a liquid level transmitter cable protective sleeve, four core wires and four filling strips, and is characterized in that the liquid level transmitter cable protective sleeve comprises an outer sheath, a belting layer, a braid layer, a shielding layer and an inner sheath, a hollow pipe is arranged in the liquid level transmitter cable protection sleeve, the outer surface of an inner sheath is fixedly connected with a shielding layer, the outer surface of the shielding layer is fixedly connected with a braid layer, and through the arrangement of a core wire and the hollow pipe, the cable can conduct electricity and transmit signals; according to the technical scheme, the liquid can be conveyed in the electric conduction and signal transmission process of the cable, the cable can be protected through the arrangement of the outer sleeve and the inner sleeve, the influence of external signals on the transmission operation of the cable can be prevented through the arrangement of the braid layer, the shielding layer and the filling strips, the overall strength of the cable is greatly improved, and the cable is suitable for popularization and application. Therefore, the service life of the cable is longer.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a corrosion-resistant double-layer sheathed gas-conducting cable for a liquid level transmitter. Background Art

[0002] Liquid level transmitter is an extension and development of pressure transmitter technology. It realizes accurate measurement and transmission of volume, liquid height and weight of water, oil and paste based on the principle that the pressure generated by liquids with different specific gravities at different heights is linearly related. It is suitable for measuring flow, liquid level and pressure, differential pressure, gauge pressure and absolute pressure. It is an ideal measuring instrument in the fields of petroleum, chemical industry, metallurgy, power station, light industry and municipal engineering. Liquid level transmitter needs to be used with air guide tube and transmission cable.

[0003] However, the commonly used method now is to twist the air guide tube and the signal transmission fiber core together to form an air guide cable. However, due to the relatively harsh underground environment, the cables and conduits are easily corroded by acids and alkalis and hydrolyzed, and the signal transmission is easily interfered and interrupted. The current air guide cables are not very flexible and tensile-resistant, which affects the normal use of the composite cable. The number of air guide tubes is single and the use is not diverse enough. Therefore, the technicians in this field provide a corrosion-resistant double-layer sheathed liquid level transmitter air guide cable to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A corrosion-resistant double-layer sheathed liquid level transmitter air-conducting cable, comprising a liquid level transmitter cable protective sheath, four core wires and four filling strips, the liquid level transmitter cable protective sheath comprising an outer sheath, a tape layer, a braided layer, a shielding layer and an inner sheath, a hollow tube is provided inside the liquid level transmitter cable protective sheath, the outer surface of the inner sheath is fixedly connected to the shielding layer, the outer surface of the shielding layer is fixedly connected to the braided layer, the outer surface of the braided layer is fixedly connected to the tape layer, and the outer surface of the tape layer is fixedly connected to the outer sheath.

[0007] As a further solution of the utility model: an insulator is fixedly connected to the outer surface of each core wire, and each core wire is made of a plurality of tinned copper strands twisted together.

[0008] As a further solution of the utility model: the color of each of the insulators is different, namely black, white, blue and red, and the inner wall of each of the inner sheaths and the outer surface of the hollow tube are in contact with the insulator.

[0009] As a further solution of the utility model: the wrapping layer is made of strip-shaped steel material, and the shielding layer is made of aluminum foil.

[0010] As a further solution of the utility model: the braided layer is made of nylon braiding, and the wrapping layer is PET wrapping.

[0011] As a further solution of the utility model: the inner wall of each inner sheath and the outer surface of the hollow tube are in contact with the outer surface of the filling strip, and the outer surface of each insulator is in contact with the outer surface of the filling strip.

[0012] As a further solution of the utility model: the inner sheath is a silane cross-linked PE insulation layer, and each of the filling strips is braided from four nylon wires.

[0013] As a further solution of the utility model: the outer sheath is made of rubber material, and the hollow tube is a PVC plastic tube.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The corrosion-resistant double-layer sheathed gas-conducting cable for the liquid level transmitter, through the arrangement of the core wire and the hollow tube, can not only enable the cable to perform conductive and signal transmission operations, but also enable the cable to transport liquids during the conductive and signal transmission processes. The arrangement of the outer sheath and the inner sheath can protect the cable. The arrangement of the braided layer, the shielding layer and the filling strip can not only prevent external signals from affecting the transmission operation of the cable, but also greatly increase the overall strength of the cable, thereby extending the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable;

[0017] Figure 2 It is a side view of a corrosion-resistant double-sheathed gas-conducting cable for a liquid level transmitter;

[0018] Figure 3 It is a side cross-sectional view of a liquid level transmitter cable protective sheath in a corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable;

[0019] Figure 4 A corrosion-resistant double-sheathed gas-conducting cable for liquid level transmitters Figure 3 A schematic diagram of the structure with a partial enlargement at the center;

[0020] Figure 5 This is a material structure diagram of the braided layer in a corrosion-resistant double-sheathed liquid level transmitter gas-conducting cable.

[0021] In the figure: 1. Liquid level transmitter cable protective cover; 2. Filling strip; 3. Insulator; 4. Core wire; 5. Hollow tube; 6. Outer sheath; 7. Tape layer; 8. Braided layer; 9. Shielding layer; 10. Inner sheath. DETAILED DESCRIPTION

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] See also Figures 1 to 5 In an embodiment of the utility model, a corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable comprises a liquid level transmitter cable protective sheath 1, four core wires 4 and four filling strips 2. The liquid level transmitter cable protective sheath 1 comprises an outer sheath 6, a tape layer 7, a braided layer 8, a shielding layer 9 and an inner sheath 10. A hollow tube 5 is provided inside the liquid level transmitter cable protective sheath 1. The outer surface of the inner sheath 10 is fixedly connected to the shielding layer 9, the outer surface of the shielding layer 9 is fixedly connected to the braided layer 8, the outer surface of the braided layer 8 is fixedly connected to the tape layer 7, and the outer surface of the tape layer 7 is fixedly connected to the outer sheath 6.

[0025] The outer surface of each core wire 4 is fixedly connected to an insulator 3. Each core wire 4 is made of multiple tinned copper strands twisted together, which can not only make the cable more conductive and transmit signals better, but also make the cable have an insulating effect. The color of each insulator 3 is different, namely black, white, blue and red. The inner wall of each inner sheath 10 and the outer surface of the hollow tube 5 are in contact with the insulator 3. The core wires 4 and the filling strips 2 are arranged in a circular cross pattern outside the hollow tube 5.

[0026] The tape layer 7 is made of strip-shaped steel, the shielding layer 9 is made of aluminum foil, which can prevent external signals from affecting the transmission operation of the cable, the braided layer 8 is made of nylon braiding, the tape layer 7 is PET tape, the inner wall of each inner sheath 10 and the outer surface of the hollow tube 5 are in contact with the outer surface of the filling strip 2, the outer surface of each insulator 3 is in contact with the outer surface of the filling strip 2, the inner sheath 10 is a silane cross-linked PE insulation layer, each filling strip 2 is woven by four nylon wires, the outer sheath 6 is made of rubber, and the hollow tube 5 is a PVC plastic tube, which increases the overall strength of the cable, thereby greatly increasing the service life of the cable.

[0027] The working principle of the utility model is: first, the staff can connect the core wires 4 of different colors to the equipment and connect the hollow tube 5 to the equipment, the filling strip 2 and the braided layer 8 can prevent the cable from being damaged when subjected to external tension, the inner sheath 10 and the outer sheath 6 can protect the cable and prevent external objects from damaging the core wire 4 and the hollow tube 5, and the shielding layer 9 can block external signals to prevent external signals from affecting the transmission operation of the cable.

[0028] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and utility model concept of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable, comprising a liquid level transmitter cable protective sheath (1), four core wires (4) and four filling strips (2), characterized in that: The liquid level transmitter cable protective cover (1) comprises an outer sheath (6), a tape layer (7), a braided layer (8), a shielding layer (9) and an inner sheath (10); a hollow tube (5) is provided inside the liquid level transmitter cable protective cover (1); the outer surface of the inner sheath (10) is fixedly connected to the shielding layer (9); the outer surface of the shielding layer (9) is fixedly connected to the braided layer (8); the outer surface of the braided layer (8) is fixedly connected to the tape layer (7); and the outer surface of the tape layer (7) is fixedly connected to the outer sheath (6).

2. The corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable according to claim 1 is characterized in that: The outer surface of each core wire (4) is fixedly connected to an insulator (3), and each core wire (4) is made of a plurality of tinned copper strands twisted together.

3. The corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable according to claim 2 is characterized in that: The color of each of the insulators (3) is different, namely black, white, blue and red, and the inner wall of each of the inner sheaths (10) and the outer surface of the hollow tube (5) are in contact with the insulator (3).

4. The corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable according to claim 1 is characterized in that: The wrapping layer (7) is made of strip-shaped steel material, and the shielding layer (9) is made of aluminum foil.

5. The corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable according to claim 1 is characterized in that: The braided layer (8) is made of nylon braiding, and the tape layer (7) is a PET tape.

6. The corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable according to claim 3 is characterized in that: The inner wall of each inner sheath (10) and the outer surface of the hollow tube (5) are in contact with the outer surface of the filling strip (2), and the outer surface of each insulator (3) is in contact with the outer surface of the filling strip (2).

7. The corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable according to claim 1 is characterized in that: The inner sheath (10) is a silane cross-linked PE insulation layer, and each of the filling strips (2) is braided from four nylon threads.

8. The corrosion-resistant double-layer sheathed liquid level transmitter gas-conducting cable according to claim 1 is characterized in that: The outer sheath (6) is made of rubber material, and the hollow tube (5) is a PVC plastic tube.

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