Chemical environment corrosion-resistant signal transmission cable

Abstract

The utility model discloses a chemical environment corrosion-resistant signal transmission cable, and relates to the technical field of cables, the chemical environment corrosion-resistant signal transmission cable comprises a cable core and a plurality of coating layers sleeving the outer surface of the cable core, a cavity is reserved between the peripheral side of the cable core and the coating layer located at the innermost layer, and an inflation structure used for filling the cavity with inert gas is fixedly installed on the coating layer. Through cooperative arrangement of the partition plate, the communicating pipe, the exhaust hole, the elastic rubber sleeve and other structures, due to the fact that the elastic rubber sleeve recovers to block the exhaust hole under the action of the elastic force of the elastic rubber sleeve after inflation, when the wrapping layer on the outer side of one independent space is damaged, inert gas in the independent space can be exhausted along the damaged position, and therefore the safety of the device is improved. Inert gas in independent spaces on the two sides of the damaged position cannot be removed, so that the protection performance of the cable core is greatly improved, and the problem that the protection of the cable core is seriously affected due to the fact that the protection gas leaks completely after a local wrapping part of an existing cable structure is damaged is solved as much as possible.

Description

Technical Field

[0001] The present application relates to the field of cable technology, and in particular to a chemical environment corrosion-resistant signal transmission cable. Background Art

[0002] The core of a communication cable is the main part of the cable that transmits information. In order to protect the cable core from moisture, external mechanical damage, corrosion, and electrical interference, a sheath is generally added to the outside of the cable core, and a protective layer is usually added to the outer surface of the cable core.

[0003] The utility model patent with announcement number CN220691749U proposes a chemical environment corrosion-resistant signal transmission cable including a copper core and a cable covering wrapped around the outer surface of the copper core for protecting the copper core. The interior of the cable covering is provided with an air intake mechanism for filling with protective gas. The air intake mechanism includes an air intake pipe and a blocking block. The interior of the air intake pipe is slidably connected to the outer surface of the blocking block. The top of the blocking block is fixedly connected to a spring, and the top of the spring is fixedly connected to a bracket.

[0004] The above cable structure protects the cable by inflating air between the cable covering and the cable core. Due to the long cable length, when the local covering is damaged, the protective gas will leak out completely, seriously affecting the protection of the cable core. Utility Model Content

[0005] The purpose of the utility model is to solve or at least alleviate the problem in existing cable structures that when a local covering is damaged, the protective gas will leak out completely, seriously affecting the protection of the cable core.

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

[0007] A chemical environment corrosion-resistant signal transmission cable comprises a cable core and a multi-layer coating sleeved on the outer surface of the cable core. A cavity is left between the peripheral side of the cable core and the innermost coating. An inflatable structure for filling the cavity with inert gas is fixedly mounted on the coating. A plurality of equally spaced partitions are provided in the cavity along the length of the cable. A connecting pipe fixedly connected to the partition is passed through the center of the partition. The end of the connecting pipe away from the inflatable structure is sealed, and exhaust holes are provided on the peripheral side of the sealed end of the connecting pipe. The outer surface of the sealed end of the connecting pipe is also sleeved with an elastic rubber sleeve whose inner wall fits tightly with the outer wall of the connecting pipe.

[0008] By adopting the above technical solution, when in use, the user first inflates the cavity between the cable core and the coating through the inflation tube. Since the cavity is divided by the partition to form multiple independent spaces, when the independent space connected to the inflation tube is filled with gas, the gas enters the connecting tube through the open end of the connecting tube under the action of air pressure, and is discharged from the exhaust hole under the action of air pressure, and squeezes the elastic rubber sleeve on the connecting tube to expand, so that a gap is generated between the inner wall of the elastic rubber sleeve and the connecting tube, thereby allowing air to enter the next independent space until multiple independent spaces are filled with inert gas. When the coating outside one of the independent spaces is damaged, the inert gas in the independent space will be discharged along the damaged position. Since the elastic rubber sleeve recovers to seal the exhaust hole under its own elastic force after inflation, the inert gas in the independent spaces on both sides of the damaged position cannot be discharged, which greatly improves the protection performance of the cable core and avoids the problem that the protective gas in the existing cable structure will leak out completely after the local coating is damaged, which seriously affects the protection of the cable core.

[0009] Optionally, the covering layer includes an inner sleeve which is sleeved on the outer surfaces of the multiple cable cores and is used to bundle the multiple cable cores, and the cavity is arranged between the inner wall of the inner sleeve and the cable cores.

[0010] By adopting the above technical solution, an inner sleeve is provided to bundle multiple cable cores, thereby reducing the diameter of the entire cable and preventing the cable cores from becoming loose.

[0011] Optionally, the cavity is filled with a filling layer made of porous material.

[0012] By adopting the above technical solution, the filling layer is made of asbestos, and the cable core is protected by wrapping it with asbestos, so as to avoid the problem that the pressure of the entire cable directly acts on the cable core after being compressed, causing deformation and damage of the cable core. The filling layer is made of porous material, so that the inert gas filled in the cavity can enter the pores of the filling layer.

[0013] Optionally, the outer surface of the inner sleeve is covered with an anti-corrosion layer whose inner wall is in contact with the inner sleeve, the outer surface of the anti-corrosion layer is wrapped with a copper tape shielding layer, and the outer surface of the copper tape shielding layer is further covered with an outer sleeve for fixing the copper tape shielding layer.

[0014] By adopting the above technical solution, an anti-corrosion layer is provided to isolate external water vapor and improve the protection of the cable core. A copper tape shielding layer is provided to shield and isolate signals and avoid external signal interference to the cable core as much as possible. Since the copper tape shielding layer is wrapped around the anti-corrosion layer, an outer layer is provided on the copper tape shielding layer to cooperate with the anti-corrosion layer to clamp and fix the copper tape shielding layer.

[0015] Optionally, the inflatable structure includes an inflatable tube with one end penetrating the covering layer and communicating with the cavity, and a sealing cover for sealing the inflatable tube is screwed on the outer end of the inflatable tube.

[0016] By adopting the above technical solution, when in use, the sealing cover is opened and inert gas is filled into the cavity through external inflation equipment, thereby discharging oxygen in the cavity and reducing the possibility of oxidation corrosion of the cable core. After inflation is completed, the user can re-fix the sealing cover on the inflation tube and seal the outer end of the inflation tube to minimize the backflow and leakage of the inert gas.

[0017] Optionally, the partition is disc-shaped, the connecting pipe is located at the center of the partition, and a plurality of through holes for the cable core to pass through are opened on the partition around the connecting pipe, and a sealing ring is embedded in the inner wall of the through hole.

[0018] By adopting the above technical solution, a through hole is opened on the partition so that the cable core can pass through the partition through the through hole, and a sealing ring is provided to seal the connection between the cable core and the partition, thereby improving the sealing performance of the connection between the cable core and the partition.

[0019] Optionally, an annular groove is provided around the sealing end of the connecting pipe, the exhaust hole is opened on the inner wall of the annular groove, and a section of the inner wall of the elastic rubber sleeve located at the position of the annular groove fits with the outer surface of the annular groove.

[0020] By adopting the above technical solution, the elastic rubber sleeve is interference-fitted with the outer wall of the connecting pipe, and an annular groove is provided to increase the contact surface between the elastic rubber sleeve and the connecting pipe, thereby increasing the friction between the elastic rubber sleeve and the connecting pipe and preventing the elastic rubber sleeve from slipping off the connecting pipe.

[0021] In summary, the beneficial effects of this application are as follows:

[0022] The present application adopts the coordinated arrangement of structures such as partitions, connecting pipes, exhaust holes and elastic rubber sleeves. After inflation, the elastic rubber sleeve restores the sealing of the exhaust holes under the action of its own elastic force. When the outer covering layer of one of the independent spaces is damaged, the inert gas in the independent space will be discharged along the damaged position, while the inert gas in the independent spaces on both sides of the damaged position cannot be discharged, which greatly improves the protection performance of the cable core and avoids the problem of the existing cable structure that when the local covering is damaged, the protective gas will leak out completely, seriously affecting the protection of the cable core. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the cross-sectional structure of the overall cable of this application;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the cable of the present application;

[0025] Figure 3 It is a schematic diagram of the connection structure of the connecting pipe and the elastic rubber sleeve of the present application.

[0026] Explanation of the accompanying symbols: 1. Cable core; 2. Inner sleeve; 3. Filling layer; 4. Anti-corrosion layer; 5. Copper tape shielding layer; 6. Outer sleeve; 7. Inflatable tube; 8. Sealing cover; 9. Partition; 10. Connecting tube; 11. Annular groove; 12. Exhaust hole; 13. Elastic rubber sleeve. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-3 This application is described in further detail.

[0028] See also Figure 1-3 A chemical environment corrosion-resistant signal transmission cable includes a cable core 1 and a multi-layer coating sleeved on the outer surface of the cable core 1. The multi-layer coating is sleeved on the outer surface of the cable core 1 to protect the fragile wire core and at the same time shield signal interference through the coating.

[0029] A cavity is left between the circumference of the cable core 1 and the innermost covering layer, and an inflation structure for filling the cavity with inert gas is fixedly installed on the covering layer. When in use, a large amount of inert gas is filled into the cavity through the inflation structure, thereby discharging the oxygen in the cavity, avoiding the cable core 1 from contacting with oxygen and being oxidized and corroded as much as possible, thereby greatly improving the corrosion resistance of the cable core 1.

[0030] A plurality of equally spaced partitions 9 are provided in the cavity along the length direction of the cable. The partitions 9 are used to divide the cavity into a plurality of independent spaces. When the coating layer is partially damaged, the inert gas filled in other independent spaces will not be discharged, and the cable core 1 in the independent space can still be protected.

[0031] A connecting pipe 10 fixedly connected to the partition 9 is passed through the center of the partition 9. The end of the connecting pipe 10 away from the inflatable structure is sealed, and an exhaust hole 12 is opened on the peripheral side of the sealed end of the connecting pipe 10. The outer surface of the sealed end of the connecting pipe 10 is also covered with an elastic rubber sleeve 13 whose inner wall fits tightly with the outer wall of the connecting pipe 10.

[0032] Reference Figure 1 The coating layer includes an inner sleeve 2 which is sleeved on the outer surface of the multiple cable cores 1 and is used to bundle the multiple cable cores 1. The cavity is set between the inner wall of the inner sleeve 2 and the cable cores 1. The inner sleeve 2 is used to bundle the multiple cable cores 1, reduce the diameter of the entire cable, and prevent the cable cores 1 from loosening.

[0033] Reference Figure 1 The cavity is filled with a filling layer 3 made of a porous material. The filling layer 3 is made of asbestos. The cable core 1 is protected by wrapping the asbestos around the cable core 1 to minimize the problem of direct pressure acting on the cable core 1 after the entire cable is compressed, which may cause deformation and damage to the cable core 1. The filling layer 3 is made of a porous material, so that the inert gas filled in the cavity can enter the pores of the filling layer 3.

[0034] Reference Figure 1 The outer surface of the inner sleeve 2 is provided with an anti-corrosion layer 4 whose inner wall is in contact with the inner sleeve 2. The outer surface of the anti-corrosion layer 4 is wrapped with a copper tape shielding layer 5. The outer surface of the copper tape shielding layer 5 is further covered with an outer sleeve 6 for fixing the copper tape shielding layer 5. The anti-corrosion layer 4 is provided to isolate external moisture and improve the protection of the cable core 1. The copper tape shielding layer 5 is provided to shield and isolate signals to minimize interference from external signals to the cable core 1. Since the copper tape shielding layer 5 is wrapped around the anti-corrosion layer 4, the outer sleeve 6 is provided on the copper tape shielding layer 5 to cooperate with the anti-corrosion layer 4 to clamp and fix the copper tape shielding layer 5.

[0035] Reference Figure 1 The inflation structure includes an inflation tube 7 with one end penetrating the sheath and communicating with the cavity. A sealing cap 8 is screwed onto the outer end of the inflation tube 7 to seal the inflation tube 7. When in use, the sealing cap 8 is opened and an inert gas is injected into the cavity through an external inflation device to expel oxygen from the cavity and reduce the possibility of oxidation and corrosion of the cable core 1. After inflation is completed, the user can re-fix the sealing cap 8 on the inflation tube 7 to seal the outer end of the inflation tube 7 and minimize the backflow and leakage of the injected inert gas.

[0036] Reference Figure 2 The partition 9 is a disc-shaped structure, and the connecting pipe 10 is located at the center of the partition 9. The partition 9 around the connecting pipe 10 is provided with multiple through holes for the cable core 1 to pass through. The inner walls of the through holes are also embedded with sealing rings. The through holes are provided in the partition 9 so that the cable core 1 can pass through the partition 9 through the through holes. The sealing ring is provided to seal the connection between the cable core 1 and the partition 9, thereby improving the sealing performance of the connection between the cable core 1 and the partition 9.

[0037] Reference Figure 1 An annular groove 11 is provided around the sealing end of the connecting pipe 10, and a vent hole 12 is formed on the inner wall of the annular groove 11. A section of the inner wall of the elastic rubber sleeve 13 located at the position of the annular groove 11 is in contact with the outer surface of the annular groove 11. The elastic rubber sleeve 13 is interference-fitted with the outer wall of the connecting pipe 10. The annular groove 11 is provided to increase the contact surface between the elastic rubber sleeve 13 and the connecting pipe 10, thereby increasing the friction between the elastic rubber sleeve 13 and the connecting pipe 10 and preventing the elastic rubber sleeve 13 from slipping off the connecting pipe 10.

[0038] The implementation principle of the present application is as follows: when in use, the user first inflates the cavity between the cable core 1 and the coating layer through the inflation tube 7. Since the cavity is divided by the partition 9 to form multiple independent spaces, when the independent space connected to the inflation tube 7 is filled with gas, the gas enters the connecting tube 10 through the open end of the connecting tube 10 under the action of air pressure, and is discharged from the exhaust hole 12 under the action of air pressure, and squeezes the elastic rubber sleeve 13 installed on the connecting tube 10 to expand, so that a gap is generated between the inner wall of the elastic rubber sleeve 13 and the connecting tube 10, thereby allowing air to enter the next independent space. The interior of the independent space is filled with inert gas until multiple independent spaces are filled with inert gas. When the outer coating layer of one of the independent spaces is damaged, the inert gas in the independent space will be discharged along the damaged position. Since the elastic rubber sleeve 13 recovers to seal the exhaust hole 12 under its own elastic force after inflation, the inert gas in the independent spaces on both sides of the damaged position cannot be eliminated, which greatly improves the protection performance of the cable core 1 and avoids the problem that the protective gas will leak out completely after the local coating is damaged in the existing cable structure, which seriously affects the protection of the cable core 1.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A chemical environment corrosion-resistant signal transmission cable, comprising a cable core (1) and a multi-layer coating layer sleeved on the outer surface of the cable core (1), a cavity is left between the peripheral side of the cable core (1) and the innermost coating layer, and an inflation structure for filling the cavity with an inert gas is fixedly mounted on the coating layer, characterized in that: A plurality of equally spaced partitions (9) are provided in the cavity along the length direction of the cable, a connecting pipe (10) fixedly connected to the partition (9) is provided through the center of the partition (9), the connecting pipe (10) is sealed at one end away from the inflatable structure, and an exhaust hole (12) is provided on the peripheral side of the sealed end of the connecting pipe (10), and an elastic rubber sleeve (13) whose inner wall is tightly fitted to the outer wall of the connecting pipe (10) is also provided on the outer surface of the sealed end of the connecting pipe (10).

2. The chemical environment corrosion-resistant signal transmission cable according to claim 1, characterized in that: The coating layer comprises an inner sleeve (2) which is sleeved on the outer surface of the plurality of cable cores (1) and is used to perform a bundling effect on the plurality of cable cores (1); the cavity is arranged between the inner wall of the inner sleeve (2) and the cable cores (1).

3. The chemical environment corrosion-resistant signal transmission cable according to claim 2, characterized in that: The cavity is filled with a filling layer (3) made of porous material.

4. The chemical environment corrosion-resistant signal transmission cable according to claim 2, characterized in that: The outer surface of the inner sleeve (2) is provided with an anti-corrosion layer (4) whose inner wall is in contact with the inner sleeve (2); the outer surface of the anti-corrosion layer (4) is wrapped with a copper tape shielding layer (5); and the outer surface of the copper tape shielding layer (5) is further provided with an outer sleeve (6) for fixing the copper tape shielding layer (5).

5. The chemical environment corrosion-resistant signal transmission cable according to claim 4, characterized in that: The inflatable structure comprises an inflatable tube (7) with one end penetrating the covering layer and communicating with the cavity, and a sealing cover (8) for sealing the inflatable tube (7) is screwed onto the outer end of the inflatable tube (7).

6. The chemical environment corrosion-resistant signal transmission cable according to claim 5, characterized in that: The partition (9) is in a disc-shaped structure, the connecting pipe (10) is located at the center of the partition (9), and a plurality of through holes for the cable core (1) to pass through are opened on the partition (9) on the peripheral side of the connecting pipe (10), and a sealing ring is also embedded in the inner wall of the through hole.

7. The chemical environment corrosion-resistant signal transmission cable according to claim 1, characterized in that: An annular groove (11) is provided on the circumferential side of the sealing end of the connecting pipe (10), the exhaust hole (12) is opened on the inner wall of the annular groove (11), and a section of the inner wall of the elastic rubber sleeve (13) located at the position of the annular groove (11) is in contact with the outer surface of the annular groove (11).

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