Monitoring and positioning device for leakage of gas delivery pipe

A technology for gas pipelines and positioning devices, which is applied in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems of low detection sensitivity of warning devices, potential safety hazards, and dangers of installation and modification, etc., and achieve signal transmission. The effect of short distance, lower construction cost and lower operating cost

Inactive Publication Date: 2012-07-11
张钧 +1
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  • Claims
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Problems solved by technology

The detection sensitivity of this kind of leakage alarm is low, it is easy to be interfered, and the detection distance is short. Therefore, it is necessary to distribute sensors along the pipeline at in

Method used

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  • Monitoring and positioning device for leakage of gas delivery pipe
  • Monitoring and positioning device for leakage of gas delivery pipe
  • Monitoring and positioning device for leakage of gas delivery pipe

Examples

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Embodiment Construction

[0022] The natural gas pipeline leakage monitoring and positioning device provided in this embodiment has a structure such as figure 1 As shown, it includes a monitoring host, a monitoring extension, and a piezoelectric ceramic sensor. The monitoring extension and the piezoelectric ceramic sensor are arranged at the first station and the last station of the natural gas pipeline. The monitoring extension communicates with the monitoring host, and the monitoring extension is equipped with a GPS antenna. And by receiving GPS signals to realize time synchronization between monitoring extensions, the piezoelectric ceramic sensor is installed on the natural gas pipeline of the first station and the last station, the rear end of the piezoelectric ceramic sensor is connected with a signal amplifier, and the signal output terminal of the signal amplifier It is connected with the data acquisition card of the monitoring extension, and the audio receiving frequency of the piezoelectric cer...

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Abstract

The invention relates to a monitoring and positioning device for leakage of a gas delivery pipe. The monitoring and positioning device comprises a monitoring host, a monitoring extension set and piezoelectric ceramic sensors, wherein the piezoelectric ceramic sensors are arranged at two ends of a gas pipe, the monitoring extension set is connected with the monitoring host in a communication way, a GPS (global positioning system) antenna is installed on the monitoring extension set, the piezoelectric ceramic sensors are arranged on gas pipes at the initial station and the terminal station, a signal amplifier is connected at the rear end of the piezoelectric ceramic sensor, the signal output end of the signal amplifier is connected with a data acquisition card of the monitoring extension set, and the audio receiving frequency of the piezoelectric sensor is 0.1Hz-10Hz. The monitoring and positioning device can sample and distinguish infrasonic wave of frequencies of 0.1Hz-10Hz in the gas pipes and are used for online monitoring on gas leakage. Proved by practice, the accuracy of the device on judging leakage can reach more than 98 percent; and compared with existing leakage monitoring devices, the device has considerable progress no matter in distinguishing efficiency or feasibility.

Description

technical field [0001] The invention relates to a natural gas pipeline leakage location device which can monitor pipeline leakage online and determine the specific location of the leakage when a natural gas transmission pipeline leaks or is stolen, and belongs to the safety equipment that must be installed in gas production fields or gas transmission pipelines. field of monitoring equipment. Background technique [0002] During the long-term operation of natural gas pipelines, cracks and trachoma occur due to their own material defects, rot occurs due to corrosion, cracks occur due to external damage, and gas leakage occurs due to gas theft, causing great losses to economic construction and extremely serious damage to safe operation. serious damage to the surrounding environment. For a long time, a lot of manpower and material resources have been invested in the research of online monitoring devices for natural gas pipeline leakage at home and abroad. Some tertiary institu...

Claims

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Application Information

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IPC IPC(8): F17D5/06
Inventor 张钧陈钟荣
Owner 张钧
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