Test device for water penetration test of submarine cable and test method for water penetration of submarine cable
A technology for submarine cables and test devices, which is used in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problems that cannot fully meet the longitudinal water resistance test of submarine cable metal sleeves.
Active Publication Date: 2018-03-02
上海国缆检测股份有限公司
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Problems solved by technology
At present, the general pressure vessels on the market cannot fully meet the longitudinal water resistance test in the metal sleeve of submarine cables, so it is necessary to design according to the test conditions and the structure of submarine cables
Method used
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Embodiment
[0066] Embodiment: the container main body 5 selects the hollow cylinder of a long 5m, internal diameter 49cm common iron products for use, and the main body cover plate 6 selects the stainless steel cover plate for use, and the main body cover plate 6 and the container main body 5 are connected with screws 9. Two first through holes 601 with a diameter of 18 cm are respectively cut on each main body cover plate 6 . During the test, put the test cable 1 and the simulation cable 2 into the main body 5 of the container respectively, cover the main body cover 6, and pass the two ends of the test cable 1 and the simulation cable 2 through the corresponding first holes on the main body cover 6 respectively. A through hole 601; tighten the screw 9 to fix the main body cover plate 6 and the container main body 5, and use rubber for the gap between the test cable 1 and the main body cover plate 6, the simulation cable 2 and the main body cover plate 6 The sealing member 7 made is bloc...
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The invention provides a test device for a submarine cable water permeability test. The test device comprises a pressure container provided with a closed cavity and a heating unit, the closed cavity is used for containing two parallel test cables and a simulation cable, the heating unit is used for heating conductors of the test cables and a conductor of the simulation cable, and the pressure container is further provided with a water inlet pipe and an air inlet pipe which are communicated with the closed cavity, the water inlet pipe is provided with a water inlet valve, and the air inlet pipe is provided with an air pressure valve. The invention further provides a submarine cable water permeability test method. The method includes the steps that the test cables provided with water inlets and the simulation cable provided with a temperature test point are arranged in the pressure container of the test device in parallel, then water adding, pressing and heating are conducted, and the water blocking ability test of the test cables under the heating cycle test condition is completed, so that it is guaranteed that the submarine cable water permeability test can be completed smoothly.
Description
technical field [0001] The invention relates to the field of submarine cable water penetration test, in particular to a test device for the submarine cable water penetration test and a method for the submarine cable water penetration test. Background technique [0002] Submarine cables need to have a certain water-blocking ability to prevent the submarine cable from immersing the length of the cable in seawater as much as possible in the event of a fault. According to the regulations in CIGRE490, in the type test of submarine cables, there are three items about the water penetration test of submarine cables: longitudinal water resistance of conductors, radial water penetration of factory joints and longitudinal water resistance of metal sleeves. Provide pressure without heating the cable conductor, so the requirements for the test equipment during the test are relatively easy; and the longitudinal water resistance test in the metal sheath requires that the cable not only wit...
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IPC IPC(8): G01N15/08
CPCG01N15/08G01N15/082
Inventor 肖敬成李星辰范玉军张弘李文炜朱涛谌嘉伟
Owner 上海国缆检测股份有限公司