Alternating current relieving method suitable for town gas pipe network
A technology for gas pipes and towns, which is applied in the field of communication mitigation of urban gas pipe networks, can solve problems such as urban gas obstacles, and achieve the effect of small excavation area, technical feasibility and technical economy
Inactive Publication Date: 2015-12-16
BEIJING GAS GRP +2
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Problems solved by technology
Therefore, some commonly used AC mitigation measures are hindered in the application of town gas
Method used
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[0025] (1) According to the construction drawings, purchase a steel pipe with a diameter of 300mm and a length of 30m, an AC drain, an explosion-proof box and several cables;
[0026] (2) According to the construction drawings, reasonably select a piece of land at the place where the communication interference of the pipeline is the greatest;
[0027] (3) After selecting the land, use drilling technology to drill a deep well with a diameter of 500mm and a depth of 31m. 5m cable, backfill and compact;
[0028] (4) A cable with a length of 5m is drawn from one end of the steel pipe by ordinary welding technology;
[0029] (5) Put the steel pipe into the center of the deep well, pay attention to one end of the welding cable facing upwards and one end of the unwelded cable facing down, and fill the steel pipe with coke. Then backfill the soil and compact it;
[0030] (6) Install the purchased explosion-proof box near the deep well, and install the AC drainer in the explosion-pr...
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Abstract
The invention discloses an alternating current relieving method suitable for a town gas pipe network. The horizontal distance between a deep well alternating current draining ground bed and a pipeline is not limited. The materials of the deep well alternating current draining ground bed are more diverse, and can be a steel pipe, a hybrid metal oxide anode, a carbon rod, a high silicon cast iron anode and the like. The distance between the top end of the deep well alternating current draining ground bed and the ground in the depth direction is about 1 m. In the actual application, the periphery of the deep well alternating current draining ground bed is filled with coke with the thickness of 150 mm to 200 mm, and the deep well alternating current draining ground bed is used in cooperation with an alternating current electric drainager. In other words, a cable led out through the deep well alternating current draining ground bed is connected to a positive electrode binding post of the alternating current electric drainager, a cable led out of the pipeline is connected to a negative electrode binding post of the alternating current electric drainager, and the alternating current electric drainager is installed in an explosion-proof tank. The alternating current relieving method is an economical, effective, practical and feasible relieving method for the alternating current interference of the town gas pipe network, and very importance significance is achieved for ensuring the safe running of the town gas pipe network.
Description
technical field [0001] The invention relates to the technical field of AC mitigation of buried metal structures, in particular to the AC mitigation of urban gas pipeline networks, and is mainly used to reduce the risk of AC corrosion of urban gas pipeline networks and improve the safety of urban gas pipeline networks. AC Mitigation Methods for Town Gas Networks. Background technique [0002] With the continuous advancement of urbanization, urban high-voltage AC transmission lines, electrified railways (especially high-speed railways) and urban gas pipeline networks have entered a period of large-scale construction. Due to the limitation of the geographical location of the city, more and more buried gas pipelines are laid parallel to or crossed with high-voltage AC transmission lines or electrified railways. Infrastructure and even the personal safety of citizens. Therefore, the communication mitigation of the urban gas pipeline network is urgent. [0003] At present, the ...
Claims
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IPC IPC(8): C23F13/06
Inventor 颜丹平杜艳霞高顺利路民旭邢琳琳唐德志王一君秦臻姜子涛
Owner BEIJING GAS GRP