Power cable moisture removal platform and method
A power cable, moisture technology, applied in the direction of drying solid materials, dryers, drying solid materials without heating, etc., can solve the problems of cable electrical performance deterioration, resistance and breakdown field strength drop, cable main insulation breakdown, etc. , to achieve the effect of water removal
Pending Publication Date: 2019-11-19
HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST
View PDF0 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] Power cables are important equipment for power transmission and transshipment in power systems. Compared with overhead lines, power cables are laid underground, have many insulation layers, and their state is poor in observability. Internal hidden dangers left by improper product quality and installation processes are difficult to be discovered and checked in time. There are often various potential hidden dangers, which will affect the use of cable equipment and endanger the safe and stable operation of the power system
Among them, the most widespread hidden danger is the water ingress of the cable. The intrusion of moisture will deteriorate the electrical performance of the cable, reduce the resistance and breakdown field strength, increase the capacitance and dielectric loss tangent, and cause long-term operation after the main insulation of the cable enters water. The main insulation will cause water branches under the lower electric field strength, and then cause the main insulation breakdown fault of the cable
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below with reference to the accompanying drawings and through specific embodiments.
[0024] like figure 1 As shown, the present invention provides a power cable moisture removal platform, which includes a nitrogen gas equipment and heating system, a moisture removal system and a moisture detection system.
[0025] Among them, the nitrogen equipment and heating system includes a high-pressure gas cylinder 100 storing nitrogen gas, and the output port of the high-pressure gas cylinder 100 is sequentially installed with a valve 101, a pressure reducing valve 102, a flow rate meter 103, a pressure gauge 104, a quick connector 105, and a gas pipe 106. The pressure valve 102 is used to regulate the air intake rate, the flow rate meter 103 and the air pressure meter 104 are used to observe the residual amount of nitrogen in the high-pressure gas cyl...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a power cable moisture removal platform and method. The power cable moisture removal platform comprises a nitrogen preparation and heating system, a moisture removal system and a moisture detection system which communicate in sequence, wherein the nitrogen preparation and heating system provides heated nitrogen for the moisture removal system, the moisture removal system is used for removing moisture in cable, and the moisture detection system is used for detecting whether the moisture in the cable is completely removed. According to the power cable moisture removal platform, liquid water and vapour water in a water-filled cable can be removed, and the insulating property of the cable can be recovered.
Description
technical field [0001] The present invention relates to the field of power cable equipment, and more particularly, to a power cable moisture removal platform and method. Background technique [0002] Power cables are important equipment for power transmission and transfer in the power system. Compared with overhead lines, power cables are laid underground, with many insulation levels, and their status is not observable. Internal hidden dangers left by improper product quality and installation process are difficult to be discovered and checked in time. There are often various potential hidden dangers, which will affect the use of cable equipment and endanger the safe and stable operation of the power system. One of the most widespread potential hidden dangers is the water ingress of the cable. The intrusion of water will deteriorate the electrical performance of the cable, the resistance and breakdown field strength will decrease, and the capacitance and dielectric loss tange...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F26B5/04F26B21/14F26B25/22
CPCF26B5/048F26B21/14F26B25/22
Inventor 符方达江翼张静杨旭周文程林王录亮唐炬潘成舍从东
Owner HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST