Glue injection device and method for underwater repair of oil-filled submarine cable

Abstract

The invention provides a glue injection device and method for underwater repairing of an oil-filled submarine cable, and the glue injection device for underwater repairing of the oil-filled submarine cable is used for injecting an adhesive into a submarine cable clamp. The device comprises a first feeding container, a first stirring container, a second feeding container, a second stirring container and a gas storage assembly, wherein a first adhesive in the first feeding container can flow into the first stirring container, and the first stirring container stirs the first adhesive and the second adhesive in the first stirring container to form a first mixed adhesive; the third adhesive in the second feeding container can flow into a second stirring container, and the second stirring container stirs the third adhesive and the fourth adhesive in the second stirring container to form a second mixed adhesive; the gas storage assembly is configured to store gas and used for conveying gas to the first feeding container, the first stirring container, the second feeding container and the second stirring container.

Description

Technical Field

[0001] The present application relates to the technical field of oil-filled submarine cable repair, and in particular to a glue injection device and method for underwater repair of oil-filled submarine cables. Background Art

[0002] When oil-filled submarine cables work for a long time in a complex environment such as the ocean, it is easy for the outer sheath to rupture and cause insulation oil leakage, and the ruptured oil-filled submarine cables need to be repaired. At present, the repair of oil-filled submarine cables is mostly done by salvaging the submarine cables onto the ship for repair. This repair method not only requires the submarine cables to have sufficient redundant length for salvaging, but also easily causes damage to the outer sheath of the submarine cables during the salvaging process. Summary of the invention

[0003] The present application provides a glue injection device and method for underwater repair of oil-filled submarine cables, so as to solve the problem in the known technology that the repair of submarine cables is limited by their own redundant length and the submarine cables are easily damaged during the repair process.

[0004] The present application provides a glue injection device for underwater repair of oil-filled submarine cables, which is used for injecting glue into a submarine cable clamp. The glue injection device for underwater repair of oil-filled submarine cables comprises a first feeding container, a first stirring container, a second feeding container, a second stirring container, and an air storage component: the first feeding container is configured to contain a first glue; the first stirring container is configured to contain a second glue, and the first stirring container is fluidly connected to the first feeding container, so that the first glue in the first feeding container can flow into the first stirring container; the first stirring container is configured to stir the first glue and the second glue to form a first mixed glue, and inject the first mixed glue into the submarine cable clamp; the second feeding container is configured to contain a third glue, and the first stirring container is configured to contain a third glue. The viscosity of the third adhesive is greater than the viscosity of the first adhesive and the viscosity of the second adhesive; the second stirring container is configured to accommodate a fourth adhesive, and the viscosity of the fourth adhesive is greater than the viscosity of the first adhesive and the viscosity of the second adhesive. The second stirring container is fluidly connected to the second feeding container so that the third adhesive in the second feeding container can flow into the second stirring container; the second stirring container is configured to stir the third adhesive and the fourth adhesive to form a second mixed adhesive, and input the second mixed adhesive into the submarine cable clamp; the gas storage component is configured to store gas, and the gas storage component is used to transport gas to the first feeding container, the first stirring container, the second feeding container, and the second stirring container, respectively.

[0005] In a possible implementation, the gas storage assembly includes a first gas storage member and a second gas storage member, and the second gas storage member is used to deliver gas to the first feeding container, the first stirring container, the second feeding container, and the second stirring container respectively; A first air inlet pipeline is provided between the first air storage member and the first feeding container, the first air storage member is fluidically connected to the first feeding container through the first air inlet pipeline, a first pressure regulating valve is provided on the first air inlet pipeline, and the first pressure regulating valve is configured to adjust the pressure of the gas delivered to the first feeding container to V1, V1=V3+(0.1~0.3MPa); The first gas storage member is fluidly connected to the second gas storage member, a second pressure regulating valve is provided on the pipeline between the first gas storage member and the second gas storage member, and the second pressure regulating valve is configured to adjust the pressure of the gas delivered to the second gas storage member to V2, V2=V3+(0.4-0.8MPa); Wherein, V3 is the water pressure in the seawater where the glue injection device is located.

[0006] In a possible implementation manner, a first pressure-maintaining pipeline is provided between the second gas storage member and the first feeding container, and the second gas storage member is fluidically connected to the first feeding container through the first pressure-maintaining pipeline; After the first mixed adhesive is injected into the submarine cable clamp, the second gas storage member injects gas into the submarine cable clamp through the first pressure-maintaining pipeline to form a first pressure-maintaining environment.

[0007] In a possible implementation manner, a first stirring structure is provided in the first stirring container, and the first stirring structure can rotate relative to the first stirring container to stir the mixed first adhesive and the second adhesive; A first power pipeline is provided between the second air storage member and the first stirring container. The second air storage member is fluidly connected to the first stirring container through the first power pipeline and is used for blowing air toward the first stirring structure to drive the first stirring structure to rotate.

[0008] In a possible implementation manner, a second air inlet pipeline is provided between the second air storage member and the second feeding container, and the second air storage member is fluidically connected to the second feeding container through the second air inlet pipeline; The second gas storage member delivers gas to the second feeding container through the second gas inlet pipeline, so as to deliver the third adhesive in the second feeding container to the second stirring container; After the second mixed adhesive is injected into the submarine cable clamp, the second gas storage member injects gas into the submarine cable clamp through the second air inlet pipeline to form a second pressure-maintaining environment.

[0009] In a possible implementation manner, a second stirring structure is provided in the second stirring container, and the second stirring structure can rotate relative to the second stirring container to stir the mixed third adhesive and the fourth adhesive; A second power pipeline is provided between the second air storage member and the second stirring container. The second air storage member is fluidically connected to the second stirring container via the second power pipeline and is used for blowing air toward the second stirring structure to drive the second stirring structure to rotate.

[0010] In a possible implementation, the glue injection device for underwater repair of an oil-filled submarine cable further includes a first air outlet pipeline, and the first air outlet pipeline is fluidically connected to the first stirring container; and / or, The glue injection device for underwater repair of oil-filled submarine cables also includes a second air outlet pipeline, and the second air outlet pipeline fluid is connected to the second stirring container.

[0011] In a possible implementation manner, the submarine cable clamp is provided with a first glue inlet, the first glue inlet is provided on a side of the submarine cable clamp away from the sea level, and the first stirring container transports the first mixed adhesive into the submarine cable clamp through the first glue inlet; The submarine cable clamp is provided with a second glue inlet, which is arranged on a side of the submarine cable clamp close to the sea level, and the second mixing container transports the second mixed adhesive into the submarine cable clamp through the second glue inlet.

[0012] The present application also provides a method for injecting glue for underwater repair of an oil-filled submarine cable, which is applied to the above-mentioned device for injecting glue for underwater repair of an oil-filled submarine cable. The method for injecting glue for underwater repair of an oil-filled submarine cable comprises the following steps: Adding the first adhesive into the first feeding container, adding the second adhesive into the first stirring container, adding the third adhesive into the second feeding container, and adding the fourth adhesive into the second stirring container; Transporting the glue injection device for underwater repair of the oil-filled submarine cable to the location of the submarine cable to be repaired in the sea; delivering the first adhesive into the first stirring container, and stirring the first adhesive and the second adhesive to form a first mixed adhesive; delivering the first mixed adhesive into the submarine cable clamp; delivering the third adhesive into the second mixing container, and mixing the third adhesive and the fourth adhesive to form a second mixed adhesive; The second mixed adhesive is delivered into the submarine cable clamp.

[0013] In a possible implementation manner, after the first mixed adhesive is delivered into the submarine cable clamp, the step further includes: inputting gas into the submarine cable clamp to form a first pressure-maintaining environment, wherein a first pressure-maintaining pressure of the first pressure-maintaining environment is V4, V4=V6+(0.4-0.8MPa); After the second mixed adhesive is delivered into the submarine cable clamp, the step further includes: inputting gas into the submarine cable clamp to form a second pressure-maintaining environment, wherein the second pressure-maintaining pressure of the second pressure-maintaining environment is V5, V5=V6+(0.4-0.8MPa); Wherein, V6 is the water pressure in the seawater where the submarine cable clamp is located.

[0014] The glue injection device for underwater repair of oil-filled submarine cables of the present application places the first glue, the second glue, the third glue, and the fourth glue in different containers on shore, respectively, and then transports the glue injection device to the submarine cable to be repaired in the sea, and then mixes the first glue and the second glue to form a first mixed glue, which is then injected into the submarine cable clamp, and then mixes the third glue and the fourth glue to form a second mixed glue, which is then injected into the submarine cable clamp, so as to avoid mixing the first glue and the second glue and mixing the third glue and the fourth glue on land. In the subsequent process of transporting the glue injection device for underwater repair of oil-filled submarine cables to the submarine cable to be repaired in the sea, the first mixed glue and the second mixed glue are partially solidified, which affects the conveying efficiency and sealing effect of the glue. In addition, the viscosity of the third adhesive is greater than the viscosity of the first adhesive and the viscosity of the second adhesive, and the viscosity of the fourth adhesive is greater than the viscosity of the first adhesive and the viscosity of the second adhesive, which can make the viscosity of the second mixed adhesive greater than the viscosity of the first mixed adhesive, so that two adhesives with different viscosities can be injected into the submarine cable clamp according to the injection order, that is, the first mixed adhesive with good permeability and low viscosity is first injected into the submarine cable clamp, and then the second mixed adhesive with poor permeability and high viscosity is injected into the submarine cable clamp. After the first mixed adhesive and the second mixed adhesive are completely solidified, the cavity formed between the submarine cable clamp when the submarine cable clamp is wrapped around the submarine cable can be sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a glue injection device for underwater repair of an oil-filled submarine cable according to the present application in one embodiment.

[0016] Figure 2 A schematic diagram of gas flow in an embodiment of a glue injection device for underwater repair of an oil-filled submarine cable of the present application.

[0017] Figure 3 This is a schematic structural diagram of a first stirring container in one embodiment of a glue injection device for underwater repair of an oil-filled submarine cable of the present application.

[0018] Figure 4 This is a schematic structural diagram of a submarine cable clamp in one embodiment of a glue injection device for underwater repair of an oil-filled submarine cable of the present application.

[0019] Figure 5 This is a schematic structural diagram of a second clamp in one embodiment of a glue injection device for underwater repair of an oil-filled submarine cable of the present application.

[0020] Figure 6 It is a cross-sectional schematic diagram of a first clamp and a second clamp in one embodiment of a glue injection device for underwater repair of an oil-filled submarine cable of the present application.

[0021] Figure 7 It is a schematic flow chart of a method for injecting glue for underwater repair of an oil-filled submarine cable according to the present application in one embodiment.

[0022] Description of main component symbols: 200, glue injection method for underwater repair of oil-filled submarine cable; 100, glue injection device for underwater repair of oil-filled submarine cable; 1, first air inlet pipeline; 101, first valve; 2, first air outlet pipeline; 201, second valve; 3, first glue injection pipeline; 301, third valve; 4, first pressure-maintaining pipeline; 401, fourth valve; 5, first power pipeline; 501, fifth valve; 6, second air inlet pipeline; 601, sixth valve; 7, second power pipeline; 701, seventh valve; 8, second air outlet pipeline; 801, eighth valve; 9, second glue injection pipeline; 901, ninth valve; 10, air storage assembly; 11, first air storage member; 12, second air storage member; 20, first feeding container; 30, first stirring container; 31, first stirring structure; 311, rotating shaft; 312, Blade; 32, cylinder; 33, sealing plate; 40, second feeding container; 50, second stirring container; 51, second stirring structure; 60, storage rack; 70, first pressure regulating valve; 80, second pressure regulating valve; 90, submarine cable clamp; 91, first clamp; 911, first upper clamp; 912, first lower clamp; 913, oil discharge cavity; 914, first oil discharge pipeline; 915, second oil discharge pipeline; 916, first sealing groove; 92, second clamp; 921, second upper clamp; 922, second lower clamp; 923, glue injection cavity; 924, second sealing groove; 925, third sealing groove; 926, first glue inlet; 927, second glue inlet; 928, first outlet; 929, second outlet; 93, conical sealing ring; 931, conical part; 932, plane part; 94, pressing plate; 941, sub-plate.

[0023] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0024] The following description will refer to the accompanying drawings to more fully describe the content of the present application. Shown in the accompanying drawings are exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals represent identical or similar components.

[0025] The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include the plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the existence or addition of one or more other features, regions, integers, steps, operations, components and / or groups thereof.

[0026] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. In addition, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant technology and the content of this application, and will not be interpreted as an idealized or overly formal meaning.

[0027] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 3 As shown, this embodiment provides a glue injection device 100 for underwater repair of an oil-filled submarine cable, which is used to inject glue into a submarine cable clamp 90 .

[0029] The submarine cable clamp 90 includes a first clamp 91 and a second clamp 92. When the submarine cable leaks oil, the outer sheath of the submarine cable in the oil leakage area is peeled off to expose the armor layer, and then the first clamp 91 is wrapped around the outer peripheral surface of the exposed armor layer to form an oil drainage cavity 913 between the armor layer and the first clamp 91. The first clamp 91 can be provided with a valve to discharge the insulating oil in the oil drainage cavity 913 or to block the insulating oil in the oil drainage cavity 913. The number of the second clamps 92 is at least two. Two second clamps 92 are respectively provided at both ends of the first clamp 91 along the extension direction of the cable. The two second clamps 92 are both wrapped around the outer peripheral surface of the exposed armor layer to form a glue injection cavity 923 between the armor layer and the second clamp 92. The two second clamps 92 are both arranged adjacent to the first clamp 91. The oil leakage of the submarine cable can be blocked by injecting glue into the glue injection cavity 923.

[0030] The glue injection device 100 for underwater repair of oil-filled submarine cable includes a first feeding container 20, a first stirring container 30, a second feeding container 40, a second stirring container 50, and an air storage assembly 10. The first feeding container 20 is configured to contain a first adhesive, and the viscosity of the first adhesive is approximately in the range of 40-160 Pa·s (25°C). The first stirring container 30 is configured to contain a second adhesive, and the viscosity of the second adhesive is approximately in the range of 40-160 Pa·s (25°C). The first stirring container 30 is fluidly connected to the first feeding container 20, so that the first adhesive in the first feeding container 20 can flow into the first stirring container 30, and then the first adhesive and the second adhesive can be mixed in the first stirring container 30. The first stirring container 30 is configured to stir the mixed first adhesive and the second adhesive to form a first mixed adhesive, and the first stirring container 30 is used to transport the first mixed adhesive into the submarine cable clamp 90.

[0031] The second feeding container 40 is configured to contain a third adhesive, the viscosity of the third adhesive is greater than the viscosity of the first adhesive and the viscosity of the second adhesive, and the viscosity of the third adhesive is approximately in the range of 400-660 Pa·s (25°C). The second stirring container 50 is configured to contain a fourth adhesive, the viscosity of the fourth adhesive is greater than the viscosity of the first adhesive and the viscosity of the second adhesive, and the viscosity of the fourth adhesive is approximately in the range of 400-660 Pa·s (25°C). The second stirring container 50 is fluidly connected to the second feeding container 40, and is used to allow the third adhesive in the second feeding container 40 to flow into the second stirring container 50, so that the third adhesive and the fourth adhesive can be mixed in the second stirring container 50. The second stirring container 50 is configured to stir the mixed third adhesive and the fourth adhesive to form a second mixed adhesive, and the second stirring container 50 is used to transport the second mixed adhesive into the submarine cable clamp 90. The gas storage assembly 10 is configured to store gas, and the gas storage assembly 10 is used to deliver gas to the first feeding container 20 , the first stirring container 30 , the second feeding container 40 , and the second stirring container 50 , respectively.

[0032] In addition, the glue injection device 100 for underwater repair of oil-filled submarine cables also includes a storage rack 60, and the first feeding container 20, the first stirring container 30, the second feeding container 40, the second stirring container 50, and the gas storage assembly 10 are all installed in the storage rack 60 for easy transportation.

[0033] In this way, the glue injection device 100 for underwater repair of oil-filled submarine cables of the present application places the first adhesive, the second adhesive, the third adhesive, and the fourth adhesive in different containers on shore, and then transports the glue injection device 100 to the submarine cable to be repaired in the sea, and then mixes the first adhesive with the second adhesive to form a first mixed adhesive, which is then injected into the submarine cable clamp 90, and then mixes the third adhesive with the fourth adhesive to form a second mixed adhesive, which is then injected into the submarine cable clamp 90, so as to avoid mixing the first adhesive with the second adhesive and mixing the third adhesive with the fourth adhesive on land. In the subsequent process of transporting the glue injection device 100 for underwater repair of oil-filled submarine cables to the submarine cable to be repaired in the sea, the first mixed adhesive and the second mixed adhesive are partially cured, which affects the conveying efficiency and sealing effect of the adhesive. In addition, the viscosity of the third adhesive is greater than the viscosity of the first adhesive and the viscosity of the second adhesive, and the viscosity of the fourth adhesive is greater than the viscosity of the first adhesive and the viscosity of the second adhesive, which can make the viscosity of the second mixed adhesive greater than the viscosity of the first mixed adhesive, so that two adhesives with different viscosities can be injected into the submarine cable clamp 90 according to the injection order, that is, the first mixed adhesive with good permeability and low viscosity is first injected into the submarine cable clamp 90, and then the second mixed adhesive with poor permeability and high viscosity is injected into the submarine cable clamp 90. After the first mixed adhesive and the second mixed adhesive are completely solidified, the cavity formed between the submarine cable clamp 90 when the submarine cable clamp 90 is wrapped around the submarine cable can be sealed.

[0034] Please combine again Figures 1 to 3 In one embodiment, the gas storage assembly 10 includes a first gas storage member 11 and a second gas storage member 12. The first gas storage member 11 is a pressure vessel in which gas is stored, and the internal pressure of the first gas storage member 11 is 1~30MPa. Based on the seawater depth of the first gas storage member 11 and the gas storage pressure inside it during underwater operation, the wall thickness of the first gas storage member 11 is set to 10~25mm. The second gas storage member 12 is a pressure vessel in which gas is stored, and the internal pressure of the second gas storage member 12 is 0.5~1.2MPa. Based on the seawater depth of the second gas storage member 12 and the gas storage pressure inside it during underwater operation, the wall thickness of the second gas storage member 12 is set to 5~12mm.

[0035] A first air inlet pipeline 1 is provided between the first air storage member 11 and the first feeding container 20. The first air storage member 11 is fluidically connected to the first feeding container 20 through the first air inlet pipeline 1, so that the first air storage member 11 can inject gas into the first feeding container 20 and deliver the first adhesive stored in the first feeding container 20 to the first stirring container 30. A first pressure regulating valve 70 is provided on the first air inlet pipeline 1. The first pressure regulating valve 70 is configured to adjust the pressure of the gas delivered to the first feeding container 20 to V1, V1=V3+(0.1~0.3MPa). Among them, V3 is the water pressure in the seawater where the glue injection device 100 for underwater repair of oil-filled submarine cables is located, and V3 can be directly detected by a water pressure detection device. In this way, the gas output from the first gas storage member 11 is regulated by the first pressure regulating valve 70, which can, on the one hand, prevent the gas pressure from being too high and causing the first adhesive to be over-pressurized and splash after flowing into the first feeding container 20; on the other hand, ensure that when the gas outlet of the first stirring container 30 is opened, the gas injected into the first feeding container 20 by the first gas storage member 11 can overcome the water pressure of the seawater and deliver the first adhesive stored in the first feeding container 20 to the first stirring container 30.

[0036] The first gas storage member 11 is fluidly connected to the second gas storage member 12. A second pressure regulating valve 80 is provided on the pipeline between the first gas storage member 11 and the second gas storage member 12. The second pressure regulating valve 80 is configured to adjust the pressure of the gas delivered to the second gas storage member 12 to V2, V2=V3+(0.4~0.8MPa). Among them, V3 is the water pressure in the seawater where the glue injection device 100 for underwater repair of oil-filled submarine cables is located, and V3 can be directly detected by a water pressure detection device. The second gas storage member 12 is used to deliver gas to the first feeding container 20, the first stirring container 30, the second feeding container 40, and the second stirring container 50 respectively. The second gas storage member 12 can inject gas into the second feeding container 40 to deliver the third adhesive stored in the second feeding container 40 to the second stirring container 50. In this way, the pressure of the gas delivered from the first gas storage member 11 to the second gas storage member 12 is regulated by the second pressure regulating valve 80. On the one hand, it can prevent the gas pressure from being too high and causing the internal pressure of the second gas storage member 12 to surge and rupture after flowing into the second gas storage member 12; on the other hand, it can ensure that when the gas outlet of the second stirring container 50 is opened, the gas injected into the second feeding container 40 by the second gas storage member 12 can overcome the water pressure of the seawater and deliver the third adhesive stored in the second feeding container 40 to the second stirring container 50.

[0037] Please combine again Figures 1 to 3In one embodiment, the first feeding container 20 is a pressure container, and it is a hollow cylindrical structure. A sealing cover plate is provided at the top of the first feeding container 20, and the sealing cover plate can be fixed to the first feeding container 20 by a movable bolt, and a sealing ring is provided between the first feeding container 20 and the sealing cover plate to achieve sealing between the two. A conical discharge port is provided at the bottom end of the first feeding container 20, and the discharge port is connected to the first stirring container 30 through a feeding pipe, so that the first adhesive in the first feeding container 20 can flow into the first stirring container 30 through the discharge port and the feeding pipe in sequence. The structure and principle of the second feeding container 40 are substantially the same as those of the first feeding container 20, and will not be repeated here.

[0038] In this embodiment, the first stirring container 30 is a pressure container, and includes a cylinder 32, a sealing plate 33, and a first stirring structure 31. The cylinder 32 is a hollow cylindrical structure, the top end of the cylinder 32 is open, and the bottom end is sealed. The sealing plate 33 is fixed to the top end of the cylinder 32 to close the opening, and a sealing ring is provided between the sealing plate 33 and the cylinder 32.

[0039] The first stirring structure 31 includes a rotating shaft 311 and blades 312. The rotating shaft 311 is inserted into the mounting opening on the sealing plate 33, and the rotating shaft 311 can rotate relative to the sealing plate 33. A sealing ring is provided between the rotating shaft 311 and the sealing plate 33 to ensure the sealing of the cylinder 32. Part of the rotating shaft 311 is located outside the cylinder 32, and the other part is located inside the cylinder 32. The outer circumferential surface of the part of the rotating shaft 311 located inside the cylinder 32 is provided with blades 312, and the rotating shaft 311 can drive the blades 312 to rotate by blowing air into the first stirring structure 31, thereby realizing the stirring function with gas as a power source.

[0040] In this embodiment, the structure and principle of the second stirring container 50 are substantially the same as those of the first stirring container 30 , and will not be described in detail herein.

[0041] Please combine again Figures 1 to 3 In one embodiment, the first air intake pipeline 1 and the pipeline where the second pressure regulating valve 80 is located are connected in parallel to the air outlet end of the first air storage member 11. The first air intake pipeline 1 is provided with a first valve 101, which is located at the end of the first pressure regulating valve 70 away from the first air storage member 11, and the first air intake pipeline 1 can be controlled to be connected or disconnected by opening or closing the first valve 101.

[0042] In this embodiment, the glue injection device 100 for underwater repair of an oil-filled submarine cable further includes a first air outlet pipeline 2 and a first glue injection pipeline 3 .

[0043] The first gas outlet pipeline 2 is fluidically connected to the first stirring container 30 and is substantially connected to the top of the first stirring container 30, so that the gas in the first stirring container 30 can be discharged from the first gas outlet pipeline 2. A second valve 201 is provided on the first gas outlet pipeline 2, and the conduction or disconnection of the first gas outlet pipeline 2 can be controlled by opening or closing the second valve 201. A one-way valve is provided at the gas outlet end of the second valve 201, and the one-way valve can prevent seawater from flowing from the first gas outlet pipeline 2 into the first stirring container 30.

[0044] The first glue injection pipeline 3 is fluidically connected to the first stirring container 30 and is substantially connected to the bottom end of the first stirring container 30. The first mixed adhesive in the first stirring container 30 can flow from the first glue injection pipeline 3 to the glue injection cavity 923. The first glue injection pipeline 3 is provided with a third valve 301, and the opening or closing of the third valve 301 can be used to control the conduction or disconnection of the first glue injection pipeline 3.

[0045] In this embodiment, a first pressure-maintaining pipeline 4 is provided between the second gas storage member 12 and the first feeding container 20, and the second gas storage member 12 is fluidically connected to the first feeding container 20 through the first pressure-maintaining pipeline 4. After the first mixed adhesive is injected into the submarine cable clamp 90, the gas in the second gas storage member 12 can flow from the first pressure-maintaining pipeline 4 to the first feeding container 20, and then flow to the first stirring container 30 and then flow to the glue injection cavity 923, thereby forming a first pressure-maintaining environment in the glue injection cavity 923 to ensure that the first mixed adhesive is fully cured.

[0046] The first pressure-maintaining pipeline 4 is provided with a fourth valve 401 , and the opening or closing of the fourth valve 401 can be used to control the conduction or disconnection of the first pressure-maintaining pipeline 4 .

[0047] In this embodiment, a first power pipeline 5 is provided between the second air storage member 12 and the first stirring container 30. The second air storage member 12 is fluidly connected to the first stirring container 30 through the first power pipeline 5, and is used to blow air toward the first stirring structure 31 to drive the first stirring structure 31 to rotate.

[0048] One end of the first power pipeline 5 away from the second air storage component 12 is connected to the area of ​​the first stirring structure 31 located outside the first stirring container 30, and the first power pipeline 5 can be connected to the air channel set in the first stirring structure 31. The gas in the second air storage component 12 can enter the air channel from the first power pipeline 5, thereby driving the rotating shaft 311 of the first stirring structure 31 to rotate.

[0049] The first power pipeline 5 is provided with a fifth valve 501 , and the conduction or disconnection of the first power pipeline 5 can be controlled by opening or closing the fifth valve 501 .

[0050] Please combine again Figures 1 to 3In one embodiment, a second air inlet pipeline 6 is provided between the second air storage member 12 and the second feeding container 40. The second air storage member 12 is fluidically connected to the second feeding container 40 through the second air inlet pipeline 6, and the second air inlet pipeline 6 is substantially connected to the top of the second feeding container 40. The second air storage member 12 delivers gas to the second feeding container 40 through the second air inlet pipeline 6, so as to deliver the third adhesive in the second feeding container 40 to the second stirring container 50.

[0051] The second air intake pipeline 6 is provided with a sixth valve 601 , and the conduction or disconnection of the second air intake pipeline 6 can be controlled by opening or closing the sixth valve 601 .

[0052] In addition, after the second mixed adhesive is injected into the adhesive injection cavity 923 , the second gas storage member 12 injects gas into the adhesive injection cavity 923 through the second air inlet pipeline 6 and forms a second pressure-maintaining environment to ensure that the second mixed adhesive is fully cured.

[0053] In this embodiment, a second stirring structure 51 is provided in the second stirring container 50, and the second stirring structure 51 can rotate relative to the second stirring container 50 to stir the mixed third adhesive and the fourth adhesive. The specific structure and principle of the second stirring structure 51 are the same as those of the first stirring structure 31, and will not be repeated here.

[0054] A second power pipeline 7 is provided between the second air storage member 12 and the second stirring container 50 . The second air storage member 12 is fluidically connected to the second stirring container 50 via the second power pipeline 7 for blowing air toward the second stirring structure 51 to drive the second stirring structure 51 to rotate.

[0055] The second power pipeline 7 is provided with a seventh valve 701 , and the conduction or disconnection of the second power pipeline 7 can be controlled by opening or closing the seventh valve 701 .

[0056] In this embodiment, the glue injection device 100 for underwater repair of an oil-filled submarine cable further includes a second air outlet pipeline 8 and a second glue injection pipeline 9 .

[0057] The second gas outlet pipeline 8 is fluidically connected to the second stirring container 50 and is substantially connected to the top of the second stirring container 50, so that the gas in the second stirring container 50 can be discharged from the second gas outlet pipeline 8. An eighth valve 801 is provided on the second gas outlet pipeline 8, and the conduction or disconnection of the second gas outlet pipeline 8 can be controlled by opening or closing the eighth valve 801. A one-way valve is provided at the gas outlet end of the eighth valve 801, and the one-way valve can prevent seawater from flowing from the second gas outlet pipeline 8 into the second stirring container 50.

[0058] The second glue injection pipeline 9 is fluidically connected to the second stirring container 50 and is substantially connected to the bottom end of the second stirring container 50. The second mixed adhesive in the second stirring container 50 can flow from the second glue injection pipeline 9 to the glue injection cavity 923. A ninth valve 901 is provided on the second glue injection pipeline 9, and the opening or closing of the ninth valve 901 can control the conduction or disconnection of the second glue injection pipeline 9.

[0059] Please combine again Figures 4 to 6 , and see Figure 2 In one embodiment, the submarine cable clamp 90 is provided with a first glue inlet 926, which is located on a side of the submarine cable clamp 90 away from the sea level, and the first mixing container 30 delivers the first mixed adhesive into the submarine cable clamp 90 through the first glue inlet 926. The submarine cable clamp 90 is provided with a second glue inlet 927, which is located on a side of the submarine cable clamp 90 close to the sea level, and the second mixing container 50 delivers the second mixed adhesive into the submarine cable clamp 90 through the second glue inlet 927.

[0060] In this embodiment, the first clamp 91 includes a first upper clamp 911 and a first lower clamp 912. The first upper clamp 911 and the first lower clamp 912 are both Haversian structures, and the cross-sections of the two are both in the shape of a semicircular ring. The first upper clamp 911 and the first lower clamp 912 are sleeved on the outer peripheral surface of the armor layer, and the first upper clamp 911 and the first lower clamp 912 are connected to each other to enclose and form an oil drain chamber 913. The first upper clamp 911 and the first lower clamp 912 are connected by a live bolt, and a horizontal flange is provided between the first upper clamp 911 and the first lower clamp 912, and the connection between the two is sealed by a sealing strip. The first sealing groove 916 is provided at both ends of the first clamp 91. After the first upper clamp 911 and the first lower clamp 912 are fixed, the two end faces of the first clamp 91 are sealed by a conical sealing ring 93 to ensure the sealing of the oil drain chamber 913. The conical sealing ring 93 includes an integrally formed conical portion 931 and a flat portion 932. The conical portion 931 is clamped in the first sealing groove 916 to achieve axial sealing of the first fixture 91. The cross-sectional shape of the first sealing groove 916 is conical to match the conical portion 931.

[0061] A first oil drain pipeline 914 is disposed on the first upper fixture 911 , and a second oil drain pipeline 915 is disposed on the first lower fixture 912 . The first oil drain pipeline 914 and the second oil drain pipeline 915 are both fluidically connected to the oil drain chamber 913 .

[0062] The second clamp 92 includes a second upper clamp 921 and a second lower clamp 922. The second upper clamp 921 and the second lower clamp 922 are both Haversian structures, and the cross-sections of the two are both semicircular. The second upper clamp 921 and the second lower clamp 922 are sleeved on the outer peripheral surface of the armor layer, and the second upper clamp 921 and the second lower clamp 922 are connected to each other to enclose and form a glue injection cavity 923.

[0063] The second upper clamp 921 is disposed on a side of the second lower clamp 922 close to the sea level, the first glue inlet 926 is disposed on a side of the second lower clamp 922 away from the second upper clamp 921 , and the second glue inlet 927 is disposed on a side of the second upper clamp 921 away from the second lower clamp 922 .

[0064] In particular, the second upper fixture 921 is provided with a first outlet 928 on one side away from the second lower fixture 922, and the second lower fixture 922 is provided with a second outlet 929 on one side away from the second upper fixture 921. Valves are provided at the first glue inlet 926, the second glue inlet 927, the first outlet 928, and the second outlet 929 to control their on and off.

[0065] In this way, the first mixed adhesive with low viscosity and high permeability is first injected from bottom to top to replace the seawater in the injection cavity 923, and the replaced seawater is discharged from the first outlet 928, and the pressure is maintained for a period of time until the first mixed adhesive fully penetrates into the armor layer, and then the second mixed adhesive with high viscosity and low permeability is injected from top to bottom to replace the first mixed adhesive that has not penetrated into the armor layer, and the replaced first mixed adhesive is discharged from the second outlet 929, and the pressure is maintained for a period of time, and the injection operation is completed after the second mixed adhesive is cured. The sealing strength of the glue in the injection cavity 923 is improved by the composite injection of high-permeability glue and low-permeability glue, and the sealing effect is guaranteed.

[0066] The second upper clamp 921 and the second lower clamp 922 are connected by a movable bolt, and a horizontal flange is provided between the second upper clamp 921 and the second lower clamp 922, and the connection between the two is sealed by a sealing strip. The second sealing groove 924 and the third sealing groove 925 are respectively provided at both ends of the second clamp 92. The cross-sectional shape of the second sealing groove 924 is conical, and the cross-sectional shape of the third sealing groove 925 is rectangular. The third sealing groove 925 is located at one end of the second clamp 92 close to the first clamp 91, and the second sealing groove 924 is located at one end of the second clamp 92 away from the first clamp 91. After the second upper clamp 921 and the second lower clamp 922 are fixed, the second upper clamp 921 is fixed to the first upper clamp 911 by a movable bolt, and the second lower clamp 922 is fixed to the first lower clamp 912 by a movable bolt, so as to achieve a tight fixation between the first clamp 91 and the second clamp 92. In addition, the plane portion 932 of the conical sealing ring 93 installed in the first sealing groove 916 of the first fixture 91 is clamped in the third sealing groove 925 of the second fixture 92, and the conical sealing ring 93 is pressed against the end of the first fixture 91 through the second fixture 92, so that the conical sealing ring 93 seals the joint between the first fixture 91 and the second fixture 92. The second sealing groove 924 of the second fixture 92 is sealed by the conical sealing ring 93.

[0067] In particular, a pressure plate 94 is provided at one end of the second clamp 92 away from the first clamp 91. The pressure plate 94 is fixed to the second clamp 92 by a movable bolt, and the pressure plate 94 presses the conical sealing ring 93 installed in the second sealing groove 924 of the second clamp 92 against the second clamp 92, thereby ensuring the sealing of the end face of the second clamp 92 away from the first clamp 91. The pressure plate 94 includes two sub-plates 941, both of which are semicircular structures. The two sub-plates 941 are sleeved on the outer periphery of the armor layer, and a circular ring structure is formed by splicing the two sub-plates 941. The two sub-plates 941 are each fixed to the second clamp 92 by a movable bolt, and the plane where the joint surface between the two sub-plates 941 is located is perpendicular to the plane where the joint surface between the second upper clamp 921 and the second lower clamp 922 is located.

[0068] It is worth noting that in other embodiments, the number of the second clamps 92 located on any side of the first clamp 91 can be set to two or more. Two or more second clamps 92 are arranged adjacent to each other in sequence, and the installation method of the conical sealing ring 93 between any two adjacent second clamps 92 is the same as the installation method of the conical sealing ring 93 between the second clamp 92 and the first clamp 91. The end of the second clamp 92 located farthest from the first clamp 91 away from the first clamp 91 is sealed by the above-mentioned pressing plate 94.

[0069] like Figure 7 See Figure 2 and Figure 6 This embodiment also provides a method 200 for injecting glue for underwater repair of an oil-filled submarine cable, which is applied to the above-mentioned injecting glue device 100 for underwater repair of an oil-filled submarine cable. The method 200 for injecting glue for underwater repair of an oil-filled submarine cable comprises the following steps: S1. Add a first adhesive into the first feeding container 20 , add a second adhesive into the first stirring container 30 , add a third adhesive into the second feeding container 40 , and add a fourth adhesive into the second stirring container 50 .

[0070] In this step, the covers of the first feeding container 20, the first stirring container 30, the second feeding container 40, and the second stirring container 50 are opened on the shore, and the corresponding adhesive is added respectively, and the amount of adhesive added to each container is the same. Subsequently, the covers of the first feeding container 20, the first stirring container 30, the second feeding container 40, and the second stirring container 50 are reset to ensure the sealing of each container to prevent the sea from entering the container when working in the seawater later.

[0071] S2. Transport the glue injection device 100 for underwater repair of the oil-filled submarine cable to the location of the submarine cable to be repaired in the sea.

[0072] In this step, the glue injection device 100 for underwater repair of the oil-filled submarine cable is transported to the submarine cable to be repaired in the sea, so as to realize the in-situ repair of the submarine cable and avoid damage to the submarine cable when moving the submarine cable. After the glue injection device 100 for underwater repair of the oil-filled submarine cable is transported to the submarine cable to be repaired in the sea, the first glue injection pipeline 3 is connected to the first glue inlet 926, and the second glue injection pipeline 9 is connected to the second glue inlet 927.

[0073] S3, delivering the first adhesive into the first stirring container 30, and stirring the first adhesive and the second adhesive to form a first mixed adhesive.

[0074] In this step, the first pressure regulating valve 70 and the second pressure regulating valve 80 are adjusted to make the pressure of the gas flowing out of the first pressure regulating valve 70 to be 0.4 MPa, and the pressure of the gas flowing out of the second pressure regulating valve 80 to be 0.9 MPa. Subsequently, the second valve 201 is opened first, and then the first valve 101 is opened, and the gas in the first gas storage member 11 flows to the first feeding container 20, and then the first adhesive in the first feeding container 20 is all delivered to the first stirring container 30, and then the first valve 101 is closed first, and then the second valve 201 is closed.

[0075] Subsequently, the fifth valve 501 is opened, and gas is blown toward the first stirring structure 31 through the second gas storage member 12 to stir and mix the first adhesive and the second adhesive. The stirring is continued for 1.5 minutes, and then the fifth valve 501 is closed.

[0076] S4, conveying the first mixed adhesive into the submarine cable clamp 90.

[0077] In this step, the first valve 101 is opened first, and then the third valve 301 is opened, and the gas in the first gas storage member 11 flows to the first stirring container 30 , and then the first mixed adhesive in the first stirring container 30 is delivered to the glue injection cavity 923 .

[0078] Pigments of the same color, such as red pigment, can be added to the first adhesive and the second adhesive. When red adhesive appears continuously at the first outlet 928, the valve at the first outlet 928 is closed.

[0079] After the first mixed adhesive is delivered into the submarine cable clamp 90, the step further includes: inputting gas into the submarine cable clamp 90 to form a first pressure-maintaining environment, wherein the first pressure-maintaining pressure of the first pressure-maintaining environment is V4, V4=V6+(0.4-0.8MPa). V6 is the water pressure in the seawater where the submarine cable clamp 90 is located, and V6 can be directly measured by a water pressure detection device.

[0080] After closing the valve at the first outlet 928, the fourth valve 401 is opened, the first valve 101 is closed, and the second gas storage member 12 delivers gas to the injection cavity 923 to form a first pressure-maintaining environment. The gas pressure of the first pressure-maintaining environment is 0.9 MPa, and the pressure-maintaining time is 3.5 minutes.

[0081] S5, sending the third adhesive into the second stirring container 50, and stirring the third adhesive and the fourth adhesive to form a second mixed adhesive.

[0082] In this step, the eighth valve 801 is opened first, and then the sixth valve 601 is opened, and the gas in the second gas storage member 12 flows to the second feeding container 40, and then all the third adhesive in the second feeding container 40 is sent to the second stirring container 50, and then the sixth valve 601 is closed first, and then the eighth valve 801 is closed.

[0083] Subsequently, the seventh valve 701 is opened, and gas is blown toward the second stirring structure 51 through the second gas storage member 12 to stir and mix the third adhesive and the fourth adhesive. The stirring is continued for 1.5 minutes, and then the seventh valve 701 is closed.

[0084] S6. Deliver the second mixed adhesive into the submarine cable clamp 90.

[0085] In this step, the pressure-maintaining operation of the first mixed adhesive is completed first, and then the second mixed adhesive is delivered to the submarine cable clamp 90. That is, the valve at the first adhesive inlet 926 is closed first, then the third valve 301 is closed, and then the fourth valve 401 is closed.

[0086] Subsequently, the sixth valve 601 is opened, and then the ninth valve 901 is opened, so that the gas in the second gas storage member 12 flows to the second stirring container 50 , and then the second mixed adhesive in the second stirring container 50 is delivered to the glue injection cavity 923 .

[0087] The third adhesive and the fourth adhesive may be added with pigments of the same color, such as blue pigment. When the blue adhesive appears continuously at the second outlet 929, wait for 3 minutes before closing the valve at the second outlet 929.

[0088] After the second mixed adhesive is delivered into the submarine cable clamp 90, the step further includes: inputting gas into the submarine cable clamp 90 to form a second pressure-maintaining environment, wherein the second pressure-maintaining pressure of the second pressure-maintaining environment is V5, V5=V6+(0.4-0.8MPa). V6 is the water pressure in the seawater where the submarine cable clamp 90 is located, and V6 can be directly measured by a water pressure detection device.

[0089] After closing the valve at the second outlet 929, the second gas storage member 12 starts to transport gas into the glue injection cavity 923 to form a second pressure-maintaining environment. The gas pressure of the second pressure-maintaining environment is 0.9 MPa, and the pressure-maintaining time is 3 minutes. After the pressure-maintaining is completed, all valves on the second fixture 92 are closed, and then the ninth valve 901 is closed, and then the sixth valve 601 is closed, thereby completing the entire glue injection operation. After completing the glue injection operation, the oil discharge cavity 913 is drained to recover the insulating oil.

[0090] Example 1 In the ocean or in a simulated ocean environment, a sealing test is conducted. First, 3 kg of the first adhesive, 3 kg of the second adhesive, 3 kg of the third adhesive, and 3 kg of the fourth adhesive are prepared. The first adhesive is ZFG6528-00A-01, which is a fluorosilicone rubber component, and its main component is siloxane polymer, and its viscosity is 136 Pa·s (25°C). The second adhesive is ZFG6528-00B-01, and its main components are fluoride and cross-linking agent, and its viscosity is 132 Pa·s (25°C). The third adhesive is UTR1220-30A, which is a fluorosilicone component, and its main component is siloxane polymer, and its viscosity is 517 Pa·s (25°C). The fourth adhesive is UTR1220-30B, and its main components are fluoride and cross-linking agent, and its viscosity is 523 Pa·s (25°C). Subsequently, the glue injection operation is completed according to the above-mentioned glue injection method 200 for underwater repair of oil-filled submarine cables. After testing, it was found that the sealing performance of the repaired submarine cable met the requirements. After waiting for 48 hours to ensure that the glue solidified, a blind plate was used to seal one end of the oil-filled submarine cable, and the other end was continuously injected with oil into the oil channel of the submarine cable through the oil injection equipment. The oil injection pressure was 0.8MPa, and the observation was continued for 72 hours, and the oil leakage was counted. In this embodiment, the oil leakage of the submarine cable was 0mL, which met the sealing requirements.

[0091] Comparative Example 1 Prepare 3kg of the first adhesive and 3kg of the third adhesive. The type and viscosity of the first adhesive are the same as those in Example 1, and the type and viscosity of the third adhesive are the same as those in Example 1. In addition, the glue injection method used in Comparative Example 1 is also the same as that in Example 1. After testing, it was found that the sealing performance of the repaired submarine cable could not meet the plugging requirements. After waiting for 48 hours, a blind plate was used to seal one end of the oil-filled submarine cable, and the other end was continuously injected with oil into the oil channel of the submarine cable through an oil injection device. The oil injection pressure was 0.8MPa, and the observation was continued for 72 hours, and the amount of oil leakage was counted. The amount of oil leakage of the submarine cable in this comparative example is 932.6×10 3 mL, and the oil leakage rate is 215.9 mL / min, which does not meet the plugging requirements.

[0092] Comparative Example 2 In Comparative Example 2, no pressure-maintaining operation is performed after the first mixed adhesive is injected to form a first pressure-maintaining environment, nor is a pressure-maintaining operation performed after the second mixed adhesive is injected to form a second pressure-maintaining environment. The other injection methods and material preparations of Comparative Example 2 are the same as those of Example 1. After testing, it was found that the sealing performance of the repaired submarine cable could not meet the plugging requirements. After waiting for 48 hours, a blind plate was used to seal one end of the oil-filled submarine cable, and the other end was continuously injected with oil into the oil channel of the submarine cable through an oil injection device. The oil injection pressure was 0.8 MPa, and the observation was continued for 72 hours, and the amount of oil leakage was counted. The amount of oil leakage of the submarine cable in this comparative example is 615.3×10 3 mL, and the oil leakage rate is 142.4 mL / min, which does not meet the plugging requirements.

[0093] Comparative Example 3 In Comparative Example 3, when adjusting the first pressure regulating valve 70 and the second pressure regulating valve 80, the pressure of the gas flowing out of the first pressure regulating valve 70 is 0.2MPa, and the pressure of the gas flowing out of the second pressure regulating valve 80 is 0.7MPa. The other glue injection methods and material preparations of Comparative Example 3 are the same as those of Example 1. Due to the low gas pressure, the glue cannot fully enter the armor. The test results show that the sealing requirements cannot be met. After waiting for 48 hours, a blind plate is used to seal one end of the oil-filled submarine cable, and the other end is continuously injected into the oil channel of the submarine cable through an oil injection device. The oil injection pressure is 0.8MPa, and the observation is continued for 72 hours, and the oil leakage is counted. The oil leakage of the submarine cable in this comparative example is 316.5×10 3 mL, and the oil leakage rate is 73.3 mL / min, which does not meet the plugging requirements.

[0094] Comparative Example 4 In Comparative Example 4, when adjusting the first pressure regulating valve 70 and the second pressure regulating valve 80, the pressure of the gas flowing out of the first pressure regulating valve 70 is 0.6MPa, and the pressure of the gas flowing out of the second pressure regulating valve 80 is 1.1MPa. The other glue injection methods and material preparations of Comparative Example 4 are the same as those of Example 1. Due to the high gas pressure, the glue flows too fast and cannot meet the requirements. When the glue was injected into the shell, it was found that the glue flow rate was too fast, resulting in the glue in the first stirring container 30 and the second stirring container 50 being used too quickly. Eventually, the gas entered the interior of the submarine cable clamp 90, forming a cavity, causing the glue injection to fail. After waiting for 48 hours, a blind plate was used to seal one end of the oil-filled submarine cable, and the other end was continuously injected into the oil channel of the submarine cable through an oil injection device. The oil injection pressure was 0.8MPa, and the observation was continued for 72 hours, and the amount of oil leakage was counted. The amount of oil leakage of the submarine cable in this comparative example is 928.3×10 3 mL, and the oil leakage rate is 214.9 mL / min, which does not meet the plugging requirements.

[0095] In the above, the specific embodiments of the present application are described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific embodiments of the present application without departing from the scope of the present application. These changes and substitutions are all within the scope defined by the present application.

Claims

1. A glue injection device for underwater repair of oil-filled submarine cables, used for injecting adhesive into a submarine cable clamp, characterized in that: The glue injection device for underwater repair of oil-filled submarine cables comprises: a first loading container configured to contain a first adhesive; A first stirring container, which is configured to contain a second adhesive, the first stirring container is in fluid communication with the first feeding container, so that the first adhesive in the first feeding container can flow into the first stirring container; the first stirring container is configured to stir the first adhesive and the second adhesive to form a first mixed adhesive, and inject the first mixed adhesive into the submarine cable clamp; a second feeding container configured to contain a third glue having a viscosity greater than that of the first glue and that of the second glue; a second stirring container, which is configured to contain a fourth adhesive, wherein the viscosity of the fourth adhesive is greater than the viscosity of the first adhesive and the viscosity of the second adhesive; the second stirring container is fluidly connected to the second feeding container, so that the third adhesive in the second feeding container can flow into the second stirring container; the second stirring container is configured to stir the third adhesive and the fourth adhesive to form a second mixed adhesive, and input the second mixed adhesive into the submarine cable clamp; A gas storage component is configured to store gas, and the gas storage component is used to deliver gas to the first feeding container, the first stirring container, the second feeding container, and the second stirring container respectively.

2. The glue injection device for underwater repair of oil-filled submarine cables according to claim 1, characterized in that: The gas storage assembly includes a first gas storage member and a second gas storage member, wherein the second gas storage member is used to deliver gas to the first feeding container, the first stirring container, the second feeding container, and the second stirring container respectively; A first air inlet pipeline is provided between the first air storage member and the first feeding container, the first air storage member is fluidically connected to the first feeding container through the first air inlet pipeline, a first pressure regulating valve is provided on the first air inlet pipeline, and the first pressure regulating valve is configured to adjust the pressure of the gas delivered to the first feeding container to V1, V1=V3+(0.1~0.3MPa); The first gas storage member is fluidly connected to the second gas storage member, a second pressure regulating valve is provided on the pipeline between the first gas storage member and the second gas storage member, and the second pressure regulating valve is configured to adjust the pressure of the gas delivered to the second gas storage member to V2, V2=V3+(0.4-0.8MPa); Wherein, V3 is the water pressure in the seawater where the glue injection device is located.

3. The glue injection device for underwater repair of oil-filled submarine cables according to claim 2, characterized in that: A first pressure-maintaining pipeline is provided between the second gas storage member and the first feeding container, and the second gas storage member is fluidically connected to the first feeding container through the first pressure-maintaining pipeline; After the first mixed adhesive is injected into the submarine cable clamp, the second gas storage member injects gas into the submarine cable clamp through the first pressure-maintaining pipeline to form a first pressure-maintaining environment.

4. The glue injection device for underwater repair of oil-filled submarine cables according to claim 2, characterized in that: A first stirring structure is provided in the first stirring container, and the first stirring structure can rotate relative to the first stirring container to stir the mixed first adhesive and the second adhesive; A first power pipeline is provided between the second air storage member and the first stirring container. The second air storage member is fluidly connected to the first stirring container through the first power pipeline and is used for blowing air toward the first stirring structure to drive the first stirring structure to rotate.

5. The glue injection device for underwater repair of oil-filled submarine cables according to claim 2, characterized in that: A second air inlet pipeline is provided between the second air storage member and the second feeding container, and the second air storage member is fluidically connected to the second feeding container through the second air inlet pipeline; The second gas storage member delivers gas to the second feeding container through the second gas inlet pipeline, so as to deliver the third adhesive in the second feeding container to the second stirring container; After the second mixed adhesive is injected into the submarine cable clamp, the second gas storage member injects gas into the submarine cable clamp through the second air inlet pipeline to form a second pressure-maintaining environment.

6. The glue injection device for underwater repair of oil-filled submarine cables according to claim 2, characterized in that: A second stirring structure is provided in the second stirring container, and the second stirring structure can rotate relative to the second stirring container to stir the mixed third adhesive and the fourth adhesive; A second power pipeline is provided between the second air storage member and the second stirring container. The second air storage member is fluidically connected to the second stirring container via the second power pipeline and is used for blowing air toward the second stirring structure to drive the second stirring structure to rotate.

7. The glue injection device for underwater repair of oil-filled submarine cables according to claim 1, characterized in that: The glue injection device for underwater repair of oil-filled submarine cables further comprises a first air outlet pipeline, wherein the first air outlet pipeline is fluidically connected to the first stirring container; and / or, The glue injection device for underwater repair of oil-filled submarine cables also includes a second air outlet pipeline, and the second air outlet pipeline fluid is connected to the second stirring container.

8. The glue injection device for underwater repair of oil-filled submarine cables according to claim 1, characterized in that: The submarine cable clamp is provided with a first glue inlet, which is arranged on a side of the submarine cable clamp away from the sea level, and the first mixing container transports the first mixed adhesive into the submarine cable clamp through the first glue inlet; The submarine cable clamp is provided with a second glue inlet, which is arranged on a side of the submarine cable clamp close to the sea level, and the second mixing container transports the second mixed adhesive into the submarine cable clamp through the second glue inlet.

9. A method for injecting glue for underwater repair of oil-filled submarine cables, characterized in that: The glue injection device for underwater repair of an oil-filled submarine cable according to any one of claims 1 to 8 is applied, and the glue injection method for underwater repair of an oil-filled submarine cable comprises the following steps: Adding the first adhesive into the first feeding container, adding the second adhesive into the first stirring container, adding the third adhesive into the second feeding container, and adding the fourth adhesive into the second stirring container; Transporting the glue injection device for underwater repair of the oil-filled submarine cable to the location of the submarine cable to be repaired in the sea; delivering the first adhesive into the first stirring container, and stirring the first adhesive and the second adhesive to form a first mixed adhesive; delivering the first mixed adhesive into the submarine cable clamp; delivering the third adhesive into the second mixing container, and mixing the third adhesive and the fourth adhesive to form a second mixed adhesive; The second mixed adhesive is delivered into the submarine cable clamp.

10. The method for injecting glue for underwater repair of oil-filled submarine cables according to claim 9, characterized in that: After the first mixed adhesive is delivered into the submarine cable clamp, the step further includes: inputting gas into the submarine cable clamp to form a first pressure-maintaining environment, wherein a first pressure-maintaining pressure of the first pressure-maintaining environment is V4, V4=V6+(0.4-0.8MPa); After the second mixed adhesive is delivered into the submarine cable clamp, the step further includes: inputting gas into the submarine cable clamp to form a second pressure-maintaining environment, wherein the second pressure-maintaining pressure of the second pressure-maintaining environment is V5, V5=V6+(0.4-0.8MPa); Wherein, V6 is the water pressure in the seawater where the submarine cable clamp is located.

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