A high-durability umbilical cable for heating and transporting high-viscosity oil

Abstract

This invention discloses a high-resistance umbilical cable for heating and transporting high-viscosity oil. It includes: a central oil delivery pipe; multiple heating medium delivery pipes and multiple hydraulic delivery pipes, evenly distributed around the outer periphery of the central oil delivery pipe; a high-performance cable disposed around the outer periphery of the central oil delivery pipe; an intelligent temperature control device disposed around the outer periphery of the central oil delivery pipe; a float filling layer filling the outer periphery and spaces between the central oil delivery pipe, heating medium delivery pipes, hydraulic delivery pipes, high-performance cable, and intelligent temperature control device; an umbilical cable sheath covering the outer periphery of the float filling layer; and a water injection flange. The beneficial effects of this invention are: it allows for segmented water injection into the central oil delivery pipe while heating it, improving fluidity and facilitating the transport of high-viscosity oil.

Description

Technical Field

[0001] This invention relates to the field of umbilical cable technology, and in particular to a highly durable umbilical cable for heating and transporting high-viscosity oil. Background Technology

[0002] High-viscosity oils (such as crude oil, heavy oil, and asphalt) are difficult to transport smoothly through conventional pipeline systems due to their poor flowability caused by their high viscosity. To ensure the fluidity of these oils, heating and viscosity reduction measures are necessary. While traditional umbilical cables are used for liquid and gas transport, they have shown problems such as difficulty in maintaining temperature and susceptibility to breakage and leakage in the transport of high-viscosity oils. In existing technologies, the application of heating cables and temperature control systems is limited by the precision required for temperature and flow control, making it difficult to meet the stringent requirements of transporting high-viscosity oils. Furthermore, the buoyancy design of umbilical cables typically relies on simple foam materials, which lack sufficient buoyancy and durability in complex marine environments.

[0003] While existing technologies employ heated cables and temperature control systems to aid in the transport of high-viscosity oils, technological limitations prevent them from fully meeting the stringent requirements for temperature and flow control. Furthermore, current umbilical cables typically rely on simple foam materials for buoyancy, which is insufficient to provide adequate buoyancy and durability in complex marine environments. Therefore, improving the durability, flowability, and safety of umbilical cables through innovative technologies has become a pressing technical challenge for the industry. Summary of the Invention

[0004] The purpose of this invention is to provide a high-resistance umbilical cable for heating and transporting high-viscosity oil. It is equipped with a central oil delivery pipe, a heating medium delivery pipe, a hydraulic delivery pipe, a high-performance cable, an intelligent temperature control device, a float filling layer, an umbilical cable sheath, and a water injection flange. It can inject water into the central oil delivery pipe in sections while heating the central oil delivery pipe, thereby improving fluidity and facilitating the transport of high-viscosity oil.

[0005] To achieve the above objectives, the present invention adopts the following technical solution, including: The central oil pipeline is used to output high-viscosity oil; Multiple heating medium delivery pipes and multiple hydraulic delivery pipes are evenly distributed around the outer periphery of the central oil delivery pipe; the heating medium delivery pipes are used to deliver steam or hot water and heat the central oil delivery pipe; the hydraulic delivery pipes are used to deliver high-pressure hydraulic oil. A high-performance cable, which is installed around the outer periphery of the central oil pipeline, is used for signal transmission; An intelligent temperature control device is installed on the outer periphery of the central oil pipeline to monitor strain and temperature changes; A float filler layer is filled around and between the central oil pipeline, heating medium delivery pipeline, hydraulic delivery pipeline, high-performance cable, and intelligent temperature control device to provide elastic support and buoyancy. The umbilical cable sheath, which covers the outer periphery of the float filling layer, is used to protect the central oil pipeline, heating medium delivery pipeline, hydraulic delivery pipeline, high-performance cable, intelligent temperature control device and float filling layer; Multiple water injection flanges are spaced apart on the central oil delivery pipe and connected to the heating medium delivery pipe. They are used to inject hot water from the heating medium delivery pipe into the central oil delivery pipe in sections, forming a continuous water film on the inner wall of the central oil delivery pipe, thereby reducing the frictional resistance between the high-viscosity oil and the pipe wall during long-distance transportation.

[0006] Preferably, there are two central oil pipelines arranged in parallel; each central oil pipeline is composed of multiple oil pipelines connected in sequence; the central oil pipeline consists of an adsorption inner layer and a structural outer layer; the adsorption inner layer is made of 70%-85% modified polyurethane foam, 10%-25% polypropylene fiber and 5%-10% reactive multifunctional additives; the structural outer layer is made of duplex stainless steel.

[0007] Preferably, it also includes: Pipeline fixing brackets are spaced out on the outer periphery of the central oil pipeline and are used to fix the central oil pipeline, heating medium conveying pipeline and hydraulic conveying pipeline. The pipe fixing bracket includes: A front support and a rear support are arranged one behind the other, and a central hole for the central oil pipe to pass through is provided in the center of the front support and the rear support, respectively. The second mounting holes are respectively located at the four corners of the rear bracket, for the heating medium delivery pipe or hydraulic delivery pipe to pass through, support and fix the heating medium delivery pipe or hydraulic delivery pipe.

[0008] Preferably, the heating medium conveying pipe includes three hot water conveying pipes for conveying hot water and three steam conveying pipes for conveying steam; the hydraulic conveying pipe consists of two pipes; and the hot water conveying pipe, steam conveying pipe, and hydraulic conveying pipe are all made of duplex stainless steel.

[0009] Preferably, a plurality of first mounting holes are evenly distributed on the outer edge of the water injection flange for mating with flange rings located at both ends of the oil supply branch pipe; An annular cavity is disposed within the water injection flange; Multiple water outlet holes are provided through the inner edge of the water injection flange and communicate with the annular cavity. The two ends of the water outlet holes are respectively connected to the inner cavity of the adjacent oil supply branch pipe. The water inlet has its inner end connected to the annular groove; the outer end of the water inlet is connected to the hot water delivery pipe for introducing hot water into the oil delivery branch pipe.

[0010] Preferably, the float filling layer is composed of multiple float spheres; the float spheres are made of hollow glass microspheres, and a coupling agent treatment layer is provided on the surface of the float spheres; the float spheres are hollow inside and filled with low-density gas; and gas nozzles for inflation and deflation are provided on the float spheres.

[0011] Preferably, the intelligent temperature control device consists of an optical fiber sensor and a temperature sensor, wherein the optical fiber sensor is used to detect stress changes and the temperature sensor is used to detect temperature changes.

[0012] Preferably, the umbilical cable sheath is made of polyether-type TPU / PUR.

[0013] The beneficial effects of this invention are: it is equipped with a central oil delivery pipe, a heating medium delivery pipe, a hydraulic delivery pipe, a high-performance cable, an intelligent temperature control device, a float filling layer, an umbilical cable sheath, and a water injection flange, which can inject water into the central oil delivery pipe in sections while heating the central oil delivery pipe, thereby improving fluidity and facilitating the delivery of high-viscosity oil. Attached Figure Description

[0014] Figure 1 This is a perspective view of a high-durability umbilical cable for heating and transporting high-viscosity oil according to the present invention. Figure 2 This is a body view of the water injection flange in this invention; Figure 3 This is a cross-sectional view of a high-durability umbilical cable for heating and transporting high-viscosity oil according to the present invention; Figure 4 This is a cross-sectional view of the floating sphere in this invention; Figure 5 This is a perspective view of the central oil delivery pipe, heating medium delivery pipe, and hydraulic delivery pipe in this invention; Figure 6 This is a perspective view of the pipe fixing bracket in this invention. Detailed Implementation

[0015] The invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0016] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0017] like Figure 1-6 As shown, a high-resistance umbilical cable 1 for heating and transporting high-viscosity oil according to the present invention includes: Central oil pipeline 110 is used to output high-viscosity oil; Multiple heating medium conveying pipes 120 and multiple hydraulic conveying pipes 130 are evenly distributed around the outer periphery of the central oil conveying pipe 110; the heating medium conveying pipes 120 are used to convey steam or hot water and heat the central oil conveying pipe 110; the hydraulic conveying pipes 130 are used to convey high-pressure hydraulic oil. A high-performance cable 140 is disposed on the outer periphery of the central oil pipeline 110 for signal transmission; The intelligent temperature control device 150 is located on the outer periphery of the central oil pipeline 110 and is used to monitor strain and temperature changes; The float filler layer 160 fills the outer periphery and between the central oil pipe 110, the heating medium conveying pipe 120, the hydraulic conveying pipe 130, the high-performance cable 140, and the intelligent temperature control device 150 to provide elastic support and buoyancy. The umbilical cable sheath 170 is placed around the outer periphery of the float filling layer 160 to protect the central oil pipeline 110, the heating medium delivery pipeline 120, the hydraulic delivery pipeline 130, the high-performance cable 140, the intelligent temperature control device 150, and the float filling layer 160. Multiple water injection flanges 180 are spaced apart on the central oil supply pipe 110 and connected to the heating medium supply pipe 120. They are used to inject hot water from the heating medium supply pipe 120 into the central oil supply pipe 110 in sections, forming a continuous water film on the inner wall of the central oil supply pipe 110, thereby reducing the frictional resistance between the high-viscosity oil and the pipe wall during long-distance transportation.

[0018] During use, the heating medium delivery pipe 120 releases heat to heat the central oil delivery pipe 110, facilitating the delivery of high-viscosity oil. The hydraulic delivery pipe 130 simultaneously delivers high-pressure hydraulic oil. The performance cable 140 transmits data, and the intelligent temperature control device 150 monitors strain and temperature changes; the float filler layer 160 provides elastic support and buoyancy, and the umbilical cable sheath 170 protects the internal structure of the high-strength umbilical cable 1.

[0019] In another embodiment, the central oil pipeline 110 consists of two parallel pipelines; each central oil pipeline 110 is formed by connecting multiple oil pipeline segments sequentially; the central oil pipeline 110 is composed of an adsorption inner layer 111 and a structural outer layer 112; the adsorption inner layer 111 is made of 70%-85% modified polyurethane foam, 10%-25% polypropylene fiber, and 5%-10% reactive multifunctional additives, wherein the mass ratio of flame retardant, hydrophobic modifier, and coupling agent in the reactive multifunctional additives is 60:20-40:5-15; the structural outer layer 112 is made of duplex stainless steel.

[0020] In another embodiment, it also includes: Pipeline fixing brackets 190 are spaced out around the outer periphery of the central oil pipeline 110 and are used to fix the central oil pipeline 110, the heating medium conveying pipe 120 and the hydraulic conveying pipe 130. The pipe fixing bracket 190 includes: A front support 191 and a rear support 192 are arranged one behind the other, and a central hole for the central oil pipe 110 to pass through is provided in the center of the front support 191 and the rear support 192, respectively. The second mounting holes 193 are respectively provided at the four corners of the rear bracket 192 for the heating medium conveying pipe 120 or the hydraulic conveying pipe 130 to pass through, and to support and fix the heating medium conveying pipe 120 or the hydraulic conveying pipe 130.

[0021] In another embodiment, the heating medium conveying pipe 120 includes three hot water conveying pipes 121 for conveying hot water and three steam conveying pipes 122 for conveying steam; the hydraulic conveying pipe 130 consists of two pipes; the hot water conveying pipes 121, steam conveying pipes 122 and hydraulic conveying pipes 130 are all made of duplex stainless steel.

[0022] In another embodiment, it further includes: a plurality of first mounting holes 181, which are evenly distributed on the outer edge of the water injection flange 180 for engaging with flange rings provided at both ends of the oil supply branch pipe; An annular cavity is provided within the water injection flange 180; Multiple water outlet holes 182 are disposed through the inner edge of the water injection flange 180 and communicate with the annular cavity. The two ends of the water outlet holes 182 are respectively connected to the inner cavities of the adjacent oil supply branch pipes. Water inlet 183, the inner end of which is connected to the annular groove; the outer end of water inlet 183 is connected to the hot water delivery pipe, for introducing hot water into the oil delivery branch pipe.

[0023] In another embodiment, the float filling layer 160 is composed of a plurality of float spheres 161; the float spheres are made of hollow glass microspheres and have a coupling agent treatment layer on their surface; the float spheres are hollow inside and filled with low-density gas; and the float spheres are provided with gas nozzles 162 for inflation and deflation.

[0024] In another embodiment, the intelligent temperature control device 150 comprises an optical fiber sensor 151 and a temperature sensor 152. The optical fiber sensor is used to detect stress changes, and the temperature sensor is used to detect temperature changes. Multiple optical fiber sensors 151 and temperature sensors 152 are arranged alternately at intervals.

[0025] In another embodiment, the umbilical cable sheath 170 is made of polyether-type TPU / PUR.

[0026] In summary, the present invention provides a high-durability umbilical cable 1 for heating and transporting high-viscosity oil, comprising a central oil delivery pipe 110, a heating medium delivery pipe 120, a hydraulic delivery pipe 130, a high-performance cable 140, an intelligent temperature control device 150, a float filling layer 160, an umbilical cable sheath 170, and a water injection flange 180. It can simultaneously heat the central oil delivery pipe 110 and inject water into the central oil delivery pipe 110 in sections to improve fluidity and facilitate the transport of high-viscosity oil.

[0027] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A high-resistance umbilical cable for heating and transporting high-viscosity oil, characterized in that, include: The central oil pipeline is used to output high-viscosity oil; Multiple heating medium delivery pipes and multiple hydraulic delivery pipes are evenly distributed around the outer periphery of the central oil delivery pipe; the heating medium delivery pipes are used to deliver steam or hot water and heat the central oil delivery pipe; the hydraulic delivery pipes are used to deliver high-pressure hydraulic oil. A high-performance cable, which is installed around the outer periphery of the central oil pipeline, is used for signal transmission; An intelligent temperature control device is installed on the outer periphery of the central oil pipeline to monitor strain and temperature changes; A float filler layer is filled around and between the central oil pipeline, heating medium delivery pipeline, hydraulic delivery pipeline, high-performance cable, and intelligent temperature control device to provide elastic support and buoyancy. The umbilical cable sheath, which covers the outer periphery of the float filling layer, is used to protect the central oil pipeline, heating medium delivery pipeline, hydraulic delivery pipeline, high-performance cable, intelligent temperature control device and float filling layer; Multiple water injection flanges are spaced apart on the central oil delivery pipe and connected to the heating medium delivery pipe. They are used to inject hot water from the heating medium delivery pipe into the central oil delivery pipe in sections, forming a continuous water film on the inner wall of the central oil delivery pipe, thereby reducing the frictional resistance between the high-viscosity oil and the pipe wall during long-distance transportation.

2. The high-resistance umbilical cable for heating and transporting high-viscosity oil according to claim 1, characterized in that: The central oil pipeline consists of two parallel pipelines; each central oil pipeline is composed of multiple oil pipelines connected in sequence; the central oil pipeline consists of an adsorption inner layer and a structural outer layer; the adsorption inner layer is made of 70%-85% modified polyurethane foam, 10%-25% polypropylene fiber and 5%-10% reactive multifunctional additives; the structural outer layer is made of duplex stainless steel.

3. The high-resistance umbilical cable for heating and transporting high-viscosity oil according to claim 2, characterized in that, Also includes: Pipeline fixing brackets are spaced out on the outer periphery of the central oil pipeline and are used to fix the central oil pipeline, heating medium conveying pipeline and hydraulic conveying pipeline. The pipe fixing bracket includes: A front support and a rear support are arranged one behind the other, and a central hole for the central oil pipe to pass through is provided in the center of the front support and the rear support, respectively. The second mounting holes are respectively located at the four corners of the rear bracket, for the heating medium delivery pipe or hydraulic delivery pipe to pass through, support and fix the heating medium delivery pipe or hydraulic delivery pipe.

4. The high-resistance umbilical cable for heating and transporting high-viscosity oil according to claim 3, characterized in that: The heating medium conveying pipe includes three hot water conveying pipes for conveying hot water and three steam conveying pipes for conveying steam; there are two hydraulic conveying pipes; the hot water conveying pipes, steam conveying pipes and hydraulic conveying pipes are all made of duplex stainless steel.

5. The high-resistance umbilical cable for heating and transporting high-viscosity oil according to claim 2, characterized in that, The water injection flange includes: Multiple first mounting holes are evenly distributed on the outer edge of the water injection flange for mating with flange rings located at both ends of the oil supply branch pipe; An annular cavity is provided inside the water injection flange; Multiple water outlet holes are provided through the inner edge of the water injection flange and communicate with the annular cavity. The two ends of the water outlet holes are respectively connected to the inner cavity of the adjacent oil supply branch pipe. The water inlet has its inner end connected to the annular groove; the outer end of the water inlet is connected to the hot water delivery pipe for introducing hot water into the oil delivery branch pipe.

6. The high-resistance umbilical cable for heating and transporting high-viscosity oil according to claim 2, characterized in that: The float filling layer consists of multiple float spheres; the float spheres are made of hollow glass microspheres, and a coupling agent treatment layer is provided on the surface of the float spheres; the float spheres are hollow inside and filled with low-density gas; and gas nozzles for inflation and deflation are provided on the float spheres.

7. The high-durability umbilical cable for heating and transporting high-viscosity oil according to claim 2, characterized in that: The intelligent temperature control device consists of an optical fiber sensor and a temperature sensor. The optical fiber sensor is used to detect stress changes, and the temperature sensor is used to detect temperature changes.

8. The high-resistance umbilical cable for heating and transporting high-viscosity oil according to claim 2, characterized in that: The umbilical cable sheath is made of polyether-type TPU / PUR.

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