A high temperature resistant detection optical cable

Abstract

The present invention relates to a high-temperature resistant detection optical cable applied in the field of optical cables. Through the setting of a temperature control sleeve, a temperature-adjustable protective layer can be formed outside the cable. When the ambient temperature or the temperature of the optical cable body itself is too high, the inner circulation medium softens, so that the temperature-adjustable bent pipe is turned on. At this time, the low-temperature medium can be automatically introduced into the temperature control sleeve. On the one hand, the influence of the ambient high temperature on the optical cable body is reduced, and on the other hand, the heat generated by the optical cable body can be taken away in time. Compared with the prior art, the cable can maintain a lower operating temperature in a high-temperature environment without changing the existing cable, effectively ensuring the stability of signal transmission. In addition, with the setting of an adaptive blocking rod, the airtightness of the temperature control circulation channel at low temperatures can be improved, so that the medium flow in the temperature control circulation channel changes more before and after the inner circulation medium softens, which is convenient for triggering the spontaneous temperature adjustment of the cable.

Description

Technical Field

[0001] The present invention relates to a high temperature resistant detection optical cable, in particular to a high temperature resistant detection optical cable applied in the field of optical cables. Background Art

[0002] Optical cables are manufactured to meet optical, mechanical or environmental performance specifications. They are communication cable components that use one or more optical fibers placed in a sheath as transmission media and can be used individually or in groups. The basic structure of an optical cable is generally composed of a cable core, reinforcing steel wire, filler and sheath. In addition, there are waterproof layers, buffer layers, insulated metal wires and other components as needed.

[0003] The ambient temperature in which existing optical cables can be used stably is generally -20℃-60℃. However, in some high-temperature environments, the optical cables are affected by the ambient temperature, and their signal transmission stability will be affected. In addition, the heat generated by themselves is difficult to dissipate in time, which can easily form a vicious circle, resulting in slow and extremely unstable signal transmission efficiency in this environment.

[0004] In order to solve the above problems, the prior art generally manufactures the cable sheath of the optical cable by using special materials to improve its high temperature resistance performance. However, this method increases both the material cost and the production cost. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing optical cables have poor adaptability to high temperatures, which affects the efficiency and stability of signal transmission.

[0006] In order to solve the above problems, the present invention provides a high-temperature resistant detection optical cable, comprising an optical cable body, a temperature control sleeve wrapped outside the optical cable body, the temperature control sleeve comprising two temperature control rings and an outer sheath fixedly connected between the two temperature control rings, a control center integrated on the temperature control ring, a medium reset assembly and a transition pipe fixedly connected to the outer ends of the two temperature control rings, a conduit with a solenoid valve fixedly connected to the mouth of the transition pipe, and a gas flow sensor installed at one end of the conduit close to the transition pipe;

[0007] A connecting hole is opened in the middle of the outer sheath, and annular cavities are opened on the left and right inner walls of the connecting hole. The temperature control ring is an annular hollow structure, and the medium reset assembly and the transition pipe are connected to the inside of the temperature control ring. A temperature-adaptable elbow is fixedly connected between the top of the transition pipe and the inner wall of the temperature control ring close to the outer sheath, and the two openings of the temperature-adaptable elbow are connected to the conduit and the annular cavity respectively. The temperature control ring is filled with an internal circulation medium, and the internal circulation medium wraps the temperature-adaptable elbow.

[0008] In the above-mentioned high-temperature resistant detection optical cable, a temperature-adjustable protective layer can be formed outside the cable by setting a temperature control sleeve. On the one hand, it reduces the impact of the high environmental temperature on the optical cable body, and at the same time, it can also take away the heat generated by the optical cable body in time. Compared with the existing technology, this cable can maintain a lower operating temperature in a high-temperature environment without changing the existing cable, thereby effectively ensuring the stability of signal transmission.

[0009] As a further improvement of the present application, the inner circulation medium is made of a hot-melt material, and the inner circulation medium is solid at room temperature.

[0010] As a further improvement of the present application, the medium reset assembly includes a piston fixedly connected to the upper end of the temperature control ring, an electric push rod located on the side of the piston away from the transition pipe, and a pressure plate fixedly connected to the upper end of the electric push rod, a pressure sensor is installed at the lower end of the pressure plate, the pressure sensor is located directly above the piston, and the pressure sensor is connected to the control center signal.

[0011] As a further improvement of the present application, the temperature-adaptable elbow includes two forming sections and a temperature-adaptable section fixedly connected between the two forming sections, and the two forming sections are fixedly connected to the transition pipe and the temperature control ring respectively.

[0012] As a further improvement of the present application, the shaping section is a hard shaping structure, and the temperature-adapting section is an elastic sealing structure.

[0013] As another improvement of the present application, the suitable temperature section includes a pressing tube and two pressing strips fixedly embedded in the middle of the pressing tube, and the pressing tube is symmetrical about a line connecting the two pressing strips.

[0014] As another improvement supplement of the present application, the inner wall of the edge pressing tube is coated with a silicone layer, and the thickness of the silicone layer becomes thicker along the direction approaching the tube pressing strip.

[0015] As another improvement of the present application, an adaptive blocking rod is fixedly connected to the top of the connecting hole. The adaptive blocking rod includes a thermal control rod body and a temperature-adaptive airbag located inside the temperature-adaptive bent pipe. The temperature-adaptive airbag is fixedly connected to the thermal control rod body.

[0016] As another improved supplement of the present application, the thermal control rod body includes a positioning strip fixedly connected to the inner wall of the annular cavity and a temperature-following bag strip fixedly connected to the outer end. The connection between the temperature-following bag strip and the positioning strip just contacts the inside of the annular cavity, and the temperature-following bag strip is in communication with the suitable temperature air bag.

[0017] In summary, through the setting of the temperature control sleeve, a protective layer with adjustable temperature can be formed on the outside of the cable. When the ambient temperature or the temperature of the optical cable body itself is too high, the inner circulation medium softens, so that the temperature-adjustable bend is turned on. At this time, the low-temperature medium can be automatically introduced into the temperature control sleeve. On the one hand, it reduces the impact of the high ambient temperature on the optical cable body, and on the other hand, it can also take away the heat generated by the optical cable body in time. Compared with the existing technology, this cable can maintain a lower operating temperature in a high temperature environment without changing the existing cable, effectively ensuring the stability of signal transmission; in addition, with the setting of the adaptive blocking rod, the airtightness of the temperature control circulation channel at low temperatures can be improved, so that the medium flow in the temperature control circulation channel can change more before and after the inner circulation medium softens, which is convenient for triggering the spontaneous temperature adjustment of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of the first embodiment of the present application;

[0019] Figure 2 A cross-sectional view of part of the first embodiment of the present application;

[0020] Figure 3 This is a cross-sectional view of the temperature control circulation channel in the temperature control ring of the first embodiment of the present application when it is in a sealed state;

[0021] Figure 4 This is a cross-sectional view of the temperature control circulation channel in the temperature control ring of the first embodiment of the present application when it is in an open state;

[0022] Figure 5 This is the main principle diagram of the first implementation method of this application;

[0023] Figure 6 This is a front view of the temperature-adaptable elbow according to the first embodiment of the present application;

[0024] Figure 7 This is a cross-sectional change diagram of the temperature-adaptive elbow before and after the temperature-controlled circulation channel is opened and sealed in the second embodiment of the present application;

[0025] Figure 8 A schematic diagram of a transverse cross section of an adaptive blocking rod according to a third embodiment of the present application;

[0026] Fig. 9 It is a schematic diagram of a radial cross section of an adaptive blocking rod according to a third embodiment of the present application.

[0027] Description of the numbers in the figure:

[0028] 1 optical cable body, 3 temperature control sleeve, 31 temperature control ring, 32 outer sheath, 301 connecting hole, 302 annular cavity, 4 medium reset assembly, 41 piston, 42 electric push rod, 43 pressure plate, 401 pressure sensor, 5 transition pipe, 6 gas flow sensor, 7 temperature-adaptable bending pipe, 71 shaping section, 72 temperature-adaptable section, 721 edge pressing pipe, 722 pipe pressing strip, 81 temperature-adaptable airbag, 821 temperature-following bag strip, 822 positioning strip. DETAILED DESCRIPTION

[0029] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0030] The first implementation method:

[0031] Figure 1 A high-temperature resistant detection optical cable is shown, in which a represents a cold source, including an optical cable body 1, the optical cable body 1 is wrapped with a temperature control sleeve 3, the temperature control sleeve 3 includes two temperature control rings 31 and an outer sheath 32 fixedly connected between the two temperature control rings 31, the temperature control ring 31 is integrated with a control center, the outer ends of the two temperature control rings 31 are fixedly connected with a medium reset assembly 4 and a transition pipe 5, the mouth of the transition pipe 5 is fixedly connected with a conduit with an electromagnetic valve, and a gas flow sensor 6 is installed at one end of the conduit close to the transition pipe 5. When the optical cable is used in a high-temperature environment, the conduit can be connected to an external cold source, which can be low-temperature air or low-temperature cooling water. It can be selectively set according to actual needs. In this embodiment, low-temperature air is selected as the cold source, and when the cable is just put into use, the cold source is introduced into the temperature control circulation channel through the conduit, and then the electromagnetic valve is controlled to be closed; when the cold source selects low-temperature cooling water, the gas flow sensor 6 is replaced with a liquid flow sensor accordingly.

[0032] like Figure 3 In the figure, c represents the internal circulating medium. The medium reset assembly 4 includes a piston 41 fixedly connected to the upper end of the temperature control ring 31, an electric push rod 42 located on the side of the piston 41 away from the transition pipe 5, and a pressure plate 43 fixedly connected to the upper end of the electric push rod 42. A pressure sensor 401 is installed at the lower end of the pressure plate 43. The pressure sensor 401 is located directly above the piston 41, and the pressure sensor 401 is connected to the control center signal. It is worth noting that the pressure sensor 401 does not contact the piston rod of the piston 41.

[0033] like Figure 2In the figure, b represents a conduit, a connecting hole 301 is drilled in the middle of the outer sheath 32, and an annular cavity 302 is drilled on the left and right inner walls of the connecting hole 301, wherein the conduit, the transition pipe 5, the temperature-adapting elbow 7, the connecting hole 301 and the annular cavity 302 form a temperature control circulation channel, the temperature control ring 31 is an annular hollow structure, and the medium reset component 4 and the transition pipe 5 are both connected to the inside of the temperature control ring 31, and the temperature-adapting elbow 7 is fixedly connected between the top end of the transition pipe 5 and the inner wall of the temperature control ring 31 close to the outer sheath 32, as shown in FIG. Figure 6 The temperature-adaptable elbow 7 includes two shaping sections 71 and a temperature-adaptable section 72 fixedly connected between the two shaping sections 71. The two shaping sections 71 are fixedly connected to the transition pipe 5 and the temperature control ring 31 respectively. The shaping section 71 is a hard shaping structure, and the temperature-adaptable section 72 is an elastic sealing structure. The two openings of the temperature-adaptable elbow 7 are respectively connected to the conduit and the annular cavity 302. The temperature control ring 31 is filled with an internal circulation medium, which is made of a hot-melt material and is solid at room temperature. The internal circulation medium wraps the temperature-adaptable elbow 7. Figure 3 When the optical cable is not put into use, the inner circulation medium fills the inner cavity of the temperature control ring 31 and the interior of the transition tube 5, and squeezes the temperature-adapting bend 7, causing the temperature-adapting bend 7 to deform and close. At this time, there is no contact with the cold source in the conduit. At this time, the data generated by the gas flow sensor 6 is very small or no data is generated. Figure 5 After the abnormally high temperature, the inner circulation medium gradually softens and loosens, and even turns into liquid, so that the temperature-adapting elbow 7 gradually recovers its deformation and opens. At this time, the space in the temperature-controlled circulation channel becomes larger, so that the air inside will flow to a certain extent, and the gas flow sensor 6 will monitor obvious flow data changes, and the changes will be fed back to the control center. At this time, the control center controls the cold source to circulate in the temperature-controlled circulation channel to achieve cooling of the optical cable.

[0034] In this process, if Figure 4When the cold source passes through the temperature-adaptable elbow 7, the expansion amplitude of the temperature-adaptable elbow 7 gradually increases. On the one hand, the softened medium in the transition tube 5 is squeezed to move toward the temperature control ring 31, and at the same time, the medium in the temperature control ring 31 is squeezed to move toward the medium reset component 4, thereby pushing the piston rod of the piston 41 to move upward. When it contacts the contact pressure sensor 401, it indicates that the morphological change amplitude of the medium is large. At this time, the control center can adjust the temperature of the cold source according to the signal, and accelerate the cooling of the optical cable by lowering the temperature. As the cooling time increases, the inner circulation medium gradually hardens again. When the pressure of the cold source in the temperature control circulation channel remains unchanged, the volume of the gradually solidified medium will be reduced to a certain extent, so that the pressure of the piston rod on the pressure sensor 401 will be reduced to a certain extent. When the control center obtains the signal, it means that the temperature of the optical cable is controlled. At this time, the piston 41 can be controlled to shorten, so that the pressure plate 43 squeezes the piston 41 to gradually reset it, which will gradually squeeze the temperature-adapting elbow 7 to reset it. After the piston 41 is reset, the control center controls the piston 41 to reset, so that the pressure sensor 401 is completely separated from the piston rod.

[0035] In this process, the cold source does not need to be circulated continuously. When the optical cable is in use, it can be adaptively adjusted according to actual needs, so as to achieve cyclic temperature control of the optical cable, thereby improving its high temperature resistance performance.

[0036] The adaptive medium can be selected with a hot-melt temperature between 55-65°C, so that under abnormally high temperature conditions, it can quickly trigger the cyclic temperature control of the optical cable and achieve stable signal transmission under high temperature conditions.

[0037] In summary, by setting the temperature control sleeve 3, a protective layer with adjustable temperature can be formed outside the cable. When the ambient temperature or the temperature of the optical cable body 1 itself is too high, the internal circulation medium softens, so that the temperature-adjustable bend 7 is turned on. At this time, the low-temperature medium can be automatically introduced into the temperature control sleeve 3, which can reduce the impact of the high ambient temperature on the optical cable body 1 on the one hand, and can also take away the heat generated by the optical cable body 1 in time on the other hand. Compared with the prior art, the cable can maintain a lower operating temperature in a high-temperature environment without changing the existing cable, effectively ensuring the stability of signal transmission;

[0038] The second implementation method:

[0039] This embodiment is based on the first embodiment, and changes the arrangement of the temperature-adapting elbow 7, while the rest of the embodiments remain the same as the first embodiment.

[0040] Figure 7It is shown that the suitable temperature section 72 includes a pressing tube 721 and two pressing strips 722 fixedly embedded in the middle of the pressing tube 721. The pressing tube 721 is symmetrical about the line between the two pressing strips 722. The inner wall of the pressing tube 721 is coated with a silicone layer, and the thickness of the silicone layer becomes thicker along the direction approaching the pressing strips 722.

[0041] In the setting method, there is a tube pressing strip 722 as a keel on the suitable temperature section 72, so that the suitable temperature section 72 can be uniformly deformed or opened, so that after being squeezed and closed by the internal circulation medium, the inner wall has a higher fit and better sealing, and the data obtained on the gas flow sensor 6 before and after the internal circulation medium softens will change more obviously.

[0042] The second implementation method:

[0043] This embodiment is based on the first embodiment, and an adaptive blocking rod is added, and the rest of the parts are consistent with the first embodiment.

[0044] Figure 8 and Fig. 9 It is shown that an adaptive blocking rod is fixedly connected to the top of the connecting hole 301, and the adaptive blocking rod includes a thermal control rod body and a temperature-adaptive airbag 81 located inside the temperature-adaptive curved pipe 7, and the temperature-adaptive airbag 81 is fixedly connected to the thermal control rod body. The thermal control rod body includes a positioning strip 822 fixedly connected to the inner wall of the annular cavity 302 and a temperature-following bag strip 821 fixedly connected to the outer end of 811, and the connection between the temperature-following bag strip 821 and the positioning strip 822 is just in contact with the inside of the annular cavity 302, and the temperature-following bag strip 821 is communicated with the temperature-adaptive airbag 81.

[0045] It is worth noting that the diameter of the temperature-adapting bladder strip 821 is not less than half of the inner diameter of the annular cavity 302 , and both the suitable temperature airbag 81 and the temperature-adapting bladder strip 821 are filled with saturated gas.

[0046] When the adaptive medium squeezes the temperature-adapting bent pipe 7, the temperature-adapting airbag 81 will be squeezed synchronously, so that the gas inside it will be transferred to the temperature-following bag strip 821, causing it to expand and adhere to the inner wall of the annular cavity 302, so that the annular cavity 302 is blocked, further increasing the amplitude of the data change monitored by the gas flow sensor 6 before and after the softening of the internal circulation medium.

[0047] In addition, with the setting of the adaptive blocking rod, the airtightness of the temperature control circulation channel at low temperatures can be improved, so that the medium flow in the temperature control circulation channel can change more significantly before and after the internal circulation medium softens, which is convenient for triggering the spontaneous temperature regulation of the cable.

[0048] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A high temperature resistant detection optical cable, characterized in that: The optical cable comprises an optical cable body (1), the optical cable body (1) is wrapped with a temperature control sleeve (3), the temperature control sleeve (3) comprises two temperature control rings (31) and an outer sheath (32) fixedly connected between the two temperature control rings (31), the temperature control rings (31) are integrated with a control center, the outer ends of the two temperature control rings (31) are fixedly connected with a medium reset assembly (4) and a transition pipe (5), the mouth of the transition pipe (5) is fixedly connected with a conduit with a solenoid valve, and a gas flow sensor (6) is installed at one end of the conduit close to the transition pipe (5); A connecting hole (301) is bored in the middle of the outer sheath (32), and an annular cavity (302) is bored on the left and right inner walls of the connecting hole (301); the temperature control ring (31) is an annular hollow structure, and the medium reset assembly (4) and the transition pipe (5) are both in communication with the interior of the temperature control ring (31); a temperature-adapting curved pipe (7) is fixedly connected between the inner top of the transition pipe (5) and the inner wall of the temperature control ring (31) close to the outer sheath (32); two openings of the temperature-adapting curved pipe (7) are in communication with the catheter and the annular cavity (302) respectively; the interior of the temperature control ring (31) is filled with an internal circulation medium, and the internal circulation medium wraps the temperature-adapting curved pipe (7); The inner circulation medium is made of a hot-melt material and is solid at room temperature. The medium reset assembly (4) comprises a piston (41) fixedly connected to the upper end of the temperature control ring (31), an electric push rod (42) located on the side of the piston (41) away from the transition pipe (5), and a pressure plate (43) fixedly connected to the upper end of the electric push rod (42). A pressure sensor (401) is installed at the lower end of the pressure plate (43). The pressure sensor (401) is located directly above the piston (41), and the pressure sensor (401) is connected to a control center signal. The temperature-adaptable curved pipe (7) comprises two shaping sections (71) and a temperature-adaptable section (72) fixedly connected between the two shaping sections (71). The two shaping sections (71) are fixedly connected to the transition pipe (5) and the temperature control ring (31) respectively. The shaping section (71) is a hard shaping structure, and the temperature-adaptable section (72) is an elastic sealing structure.

2. A high temperature resistant detection optical cable according to claim 1, characterized in that: The temperature-adjusting section (72) comprises a side pressing tube (721) and two tube pressing strips (722) fixedly embedded in the middle of the side pressing tube (721); the side pressing tube (721) is symmetrical about a line connecting the two tube pressing strips (722).

3. A high temperature resistant detection optical cable according to claim 2, characterized in that: The inner wall of the edge pressing tube (721) is coated with a silicone layer, and the thickness of the silicone layer becomes thicker along the direction approaching the tube pressing strip (722).

4. A high temperature resistant detection optical cable according to claim 1, characterized in that: An adaptive blocking rod is fixedly connected to the top of the communicating hole (301), the adaptive blocking rod comprising a thermal control rod body and a temperature-adaptive airbag (81) located inside the temperature-adaptive curved pipe (7), the temperature-adaptive airbag (81) being fixedly connected to the thermal control rod body.

5. A high temperature resistant detection optical cable according to claim 4, characterized in that: The thermal control rod body comprises a positioning strip (822) fixedly connected to the inner wall of the annular cavity (302) and a temperature-adjusting bag strip (821) fixedly connected to the outer end of (811); the connection between the temperature-adjusting bag strip (821) and the positioning strip (822) just contacts the inside of the annular cavity (302), and the temperature-adjusting bag strip (821) is in communication with the temperature-adjusting air bag (81).

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