The urban gas pipeline network is similar to the human body vein, and is intricately hidden in the whole city. Our task is like that of pipeline doctors. Through careful and comprehensive diagnosis, each gas pipeline is accurately located, sorted and sorted, and sorted in an orderly manner.

The gas PE pipeline locator is mainly used in the underground detection of PE pipeline, which is based on the acoustic detection principle and consists of two parts: emission and reception. The audio driver is connected to the pressure regulating box or the vent valve interface through the adapter, and applies the acoustic signal of a specific combination frequency to the gas pipeline. The acoustic signal drives the gas in the pipeline to resonate and transmit to the far end. During the transmission process, part of the acoustic energy can reach the ground. Then we receive the corresponding acoustic signal along the road through the handheld receiver, The position of buried gas PE pipeline can be quickly located by judging the combination of the acoustic signal strength fed back from the headset and the acoustic wave size displayed by the digital display. High efficiency and accuracy.

1. The PE pipe locator is connected with the valve well vent valve, the drain outlet of the pressure regulating tank, the flange plate of the pressure regulating tank, the valve on the household climbing pipe and other exposed parts of the pipeline during detection. When monitoring the location of the audio signal, first judge the general direction of the pipeline according to the exposed part of the pipeline. From known to unknown, cross-cut the pipeline to find the point with high signal strength as the pipeline location point, find out the subsequent location points in turn, and make marks, and connect the marked points to the exact location of the pipeline.

2. When it is impossible to determine the general direction of the pipeline, we should take the access point as the center of the circle and take 3-5 meters as the radius, conduct blind exploration along the circumference line, find out the point with high signal strength and mark it as the first location point of the pipeline, and connect the access point with the first point to determine the general direction of the pipeline; When detecting along the pipeline, if the trend is slightly bent, the detection distance should be reduced near the curve.

3. Due to different soil environments and different buried depths of pipelines, the signal strength will vary. In the case of determining the pipeline direction, select a relatively large point as the pipeline location point. In order to ensure the accuracy of pipeline location points, at least 3 points are usually selected to judge the strength.

3. Determination method of elbow: in the process of detection, if the elbow is encountered, continue to detect along the initial direction, and the acoustic signal will suddenly weaken until it disappears. At this point, we should go back to the last strong point in the initial direction, take this point as the center of the circle, and take 3m as the radius to conduct blind exploration along the circumference. After measuring the next relatively strong signal point, connect this point with the center point to form a straight line as the approximate direction of the pipeline. If more relatively large points can be measured on the assumed trend, the first center point can be determined as the inflection point of the pipeline. In addition, if no signal strong point is encountered during blind detection along the circumference of the initial strong point, it can be determined that this point is the end of the pipeline.

Precautions during detection:

In the process of field detection, due to the poor compression resistance of PE pipeline, a layer of steel casing should be added to the outside of the pipeline when laying the crossing pipeline. When encountering the crossing casing, the audio signal will suddenly disappear. At this time, you can continue to find the signal location point along the pipeline direction on the other side of the road. The two location points are connected, which is the pipeline direction. In addition, when signal loss occurs, it is also possible that the soil here is too loose, and the underground construction waste is not compacted, resulting in severe signal attenuation.

During on-site detection, the signal points can be searched for several meters ahead of the pipeline direction; In the case that the signal cannot be detected in the field detection, the transmitter waveform, power, frequency and other parameters can be adjusted at the last location to transform the acoustic signal combination until a clear sound is found.

The underground pipelines are complex and the geological environment is changeable. The acoustic signal will have different degrees of attenuation in different propagation environments; Therefore, in the process of detection, the existing pipeline data should be collected in detail as much as possible, and the pipeline direction and fitting position should be determined according to the actual situation, which can greatly reduce the workload and improve the work efficiency. Come to our website for more relevant content http://webtest2.daoshangbao.cn consulting service