城鎮燃氣管網類似于人體脈絡，錯綜復雜的藏匿于整座城市中，而我們的任務就像管道醫生一樣，通過細致的診斷，將每條燃氣管道精確定位、梳理分類，有序進行歸整。

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.

地埋探測PE管道時主要用到燃氣PE管道定位儀，此設備基于聲學探測原理，分發射和接收兩部分組成。音頻驅動器通過轉換接頭連接到調壓箱或者放散閥接口上，向燃氣管道內施加特定組合頻率的聲波信號，聲波信號帶動管道內燃氣共振并向遠端傳播，傳播過程一部分聲波能量可以到達地地面，我們再通過手持接收裝置沿路面接收對應的聲波信號，通過耳機內反饋的聲波信號強度及數字顯示的聲波大小組合判斷，從而快速定位出地埋燃氣PE管道位置。使用效率及準確率較高。

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、PE管定位儀在探測時與閥井放散閥、調壓柜排污口、調壓箱法蘭盤、入戶登高管上的閥門等管道外露處連接。在監聽音頻信號定位時，根據管線外露部分來判斷管線大致走向。由已知到未知，橫切管線找出信號強度大的點作為管線位置點，依次找出后續位置點，并做出標記，將標記點連線即為管道的準確位置。

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、在無法確定管線的大致走向時，我們應該以接入點為圓心，以3-5米為半徑，沿著圓周線盲探，找出信號強度值大的點標記為管線個位置點，將接入點與個點連接起來，就可以判斷出管線大致走向；在沿著管線探測時，如果走向出現輕微彎曲，在彎曲線附近應當減小探測間距。

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、由于不同的土壤環境與管線埋設不一的深度，信號強度會有所不同。在確定管線走向的情況下，選擇相對大的點作為管線位置點。為了確保管線位置點的準確性，通常選取少3個點來判斷強弱。

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、彎頭的確定方法：在探測過程中，如果遇到彎頭，繼續沿初始方向向前探測，聲波信號會突然減弱直消失。此時我們應當回到初始方向后一個強點，以此點為圓心，3米為半徑沿圓周線盲探。在測出下一個相對信號強點后，將此點與圓心點連成一條直線作為假設管道大致走向。如果能在假設走向上繼續測出更多相對大點，則個圓心點可判定為管線的拐點。此外，如果在初強點沿圓周盲探時，沒有遇到信號強點，可以判定此點為管線終點。

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.

探測過程中注意事項：

Precautions during detection:

在現場探測過程中，由于PE管線抗壓性較差，敷設過路管線時還要在管線的外部加一層鋼制套管，在遇到過路套管時，音頻信號會突然消失，此時可沿管線走向，在路面另一側繼續尋找信號位置點。兩個位置點相連，即為管線走向。此外，出現信號丟失的現象時，也有可能是此處的土壤太過疏松，地下填埋建筑垃圾夯土不實，導致信號衰減厲害。

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.

現場探測時，可沿管線走向向前幾米處繼續尋找信號點進行探測；在現場探測中確實無法探測到信號的情況下，可以在上一個位置點來調整發射機波形、功率、頻率等參數來變換聲學信號組合，直找出一個清晰的聲音。

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.

地下管線錯綜復雜，地質環境多變，聲波信號在不同的傳播環境下，會有不同程度的衰減；因此在探測過程中要盡量詳細的收集已有管線資料，結合實際情況確定管道的走向和配件位置，這樣能夠大大減少工作量，提高工作效率。更多相關內容就來我們網站http://www.scnu-graduate.com咨詢！

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://www.scnu-graduate.com consulting service