WO2020134702A1 - Method for pressure pipe blocking status detection using pulse pressure wave - Google Patents
Method for pressure pipe blocking status detection using pulse pressure wave Download PDFInfo
- Publication number
- WO2020134702A1 WO2020134702A1 PCT/CN2019/119199 CN2019119199W WO2020134702A1 WO 2020134702 A1 WO2020134702 A1 WO 2020134702A1 CN 2019119199 W CN2019119199 W CN 2019119199W WO 2020134702 A1 WO2020134702 A1 WO 2020134702A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- wave
- pulse pressure
- pressure wave
- pulse
- Prior art date
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
Definitions
- the invention relates to the technical field of pipeline detection, in particular to a method for detecting a blockage in a pressure pipeline using a pulse pressure wave.
- the current common pipeline blockage detection methods include acoustic wave detection and gamma rays Methods of detection and pressure signal analysis.
- the operation method of sound wave detection is to arrange acoustic sensors in pairs in the monitoring area to form an array.
- the sensors on both sides receive signals to analyze and determine the location of the blockage, but this method is easily interfered by background noise, which affects the accuracy and accuracy of the positioning;
- the gamma-ray method uses the penetration characteristics of gamma rays to locate the blockage , The result is more accurate, but the main limitation of this method is that when it is blocked in the submarine pipeline, the operation is more troublesome and the cost is higher;
- the pressure signal analysis method is based on the characteristics of the pressure signal in the pipeline with the pipeline and the event to determine the location and degree of blockage This method is simple to operate, but has poor detection accuracy.
- the present invention provides a method for detecting a blockage in a pressure pipeline using a pulse pressure wave.
- the technical solution adopted by the present invention is: a method for detecting a blockage in a pressure pipe using a pulse pressure wave, including the following steps:
- the high-frequency dynamic pressure sensor A records the pulse pressure wave signal S1 at the entrance of the pressure pipeline, and set a high-frequency dynamic pressure at a distance of L from the entrance of the pressure pipeline Sensor B, high-frequency dynamic pressure sensor B records the pulse pressure wave signal S2 at a distance L from the entrance of the pressure pipe;
- the pulse pressure wave is a single peak negative pressure wave, the width is less than 50 ms, and the signal acquisition frequency of the high-frequency dynamic pressure sensor A and the high-frequency dynamic pressure sensor B is higher than 10 kHz.
- the analysis of the pulse pressure wave signal S1 and the pulse pressure wave signal S2 specifically obtains that the first incident wave of the pulse pressure wave signal S1 is D1, and the first mutation point of D1 is recorded as the characteristic point 1, then the characteristic point The time of 1 is T 1 , and the maximum value of the pressure fluctuation of D1 is P 1 ; the first incident wave of the pulse pressure wave signal S2 obtained is D2, and the first mutation point of D2 is recorded as characteristic point 2, then the characteristic point 2 The time is T 2 , and the maximum value of the pressure fluctuation of D2 is P 2 .
- the obtaining of the pulse pressure wave propagation speed C and the pulse pressure wave attenuation coefficient ⁇ is specifically the pulse pressure wave propagation velocity C calculated by the wave velocity formula, and the pulse pressure wave attenuation coefficient ⁇ calculated by the definition of the attenuation coefficient; the wave velocity formula for:
- the attenuation coefficient is defined as:
- step (4) is specifically:
- the blockage is a short blockage
- the reflected wave is a single negative pulse pressure wave followed by a single positive pulse pressure wave, then the blockage is a long blockage.
- step (5) to obtain the blocked position of the blocked section as x and the blocked rate as S.
- the blocked condition is the occurrence of a long blocked section
- the length of the blocked section is l; the first one generated by the blocked section at this time
- the negative pulse pressure wave is D3, the first mutation point of D3 is recorded as characteristic point 3, then the time of characteristic point 3 is T 3 , and the maximum value of the pressure fluctuation of D3 is P 3 ;
- the blockage is a long blockage, Then the first negative pulse pressure wave is followed by the first positive pulse pressure wave, the first positive pulse pressure wave is D4, the first mutation point of D4 is recorded as characteristic point 4, and the time of characteristic point 4 is T 4.
- the maximum value of the pressure fluctuation of D4 is P 4 .
- k is the maximum ratio of the pressure fluctuation of the reflected wave and the incident wave at the clogging position.
- ⁇ is a non-linear coefficient
- ⁇ 0 is the incident wave particle velocity
- T is the pulse pressure wave width
- ⁇ is the pi.
- the beneficial effect of the present invention is: by quickly opening and closing the solenoid valve, it actively emits a pulse pressure wave in the pipeline, analyzes the effective information in the incident wave and the reflected wave, can accurately determine the number and type of the blocked section, and can obtain the blocked Position, clogging rate and clogging length, easy to operate and high precision.
- FIG. 1 is a schematic diagram of a pressure wave curve diagram of the present invention.
- the quick opening and closing solenoid valve at the entrance of the pipeline emits a pulse pressure wave into the pressure pipeline at the entrance of the pressure pipeline;
- the high-frequency dynamic pressure sensor A records the pulse pressure wave signal S1 at the entrance of the pressure pipeline, and set a high-frequency dynamic pressure at a distance of L from the entrance of the pressure pipeline Sensor B, high-frequency dynamic pressure sensor B records the pulse pressure wave signal S2 at a distance L from the entrance of the pressure pipe; preferably, L takes 50m;
- the pulse pressure wave is a single peak negative pressure wave, the width is less than 50 ms, and the signal acquisition frequency of the high-frequency dynamic pressure sensor A and the high-frequency dynamic pressure sensor B is higher than 10 kHz.
- the analysis of the pulse pressure wave signal S1 and the pulse pressure wave signal S2 is specifically to obtain the first incident wave of the pulse pressure wave signal S1 as D1, and the first mutation point of D1 (that is, the inflection point where the dynamic pressure signal starts to mutate) is written as Feature point 1, then the time of feature point 1 is T 1 , and the maximum value of the pressure fluctuation of D1 is P 1 ; the first incident wave of the pulse pressure wave signal S2 obtained is D2, and the first mutation point of D2 is recorded as the feature point 2, the time of feature point 2 is T 2 , and the maximum value of the pressure fluctuation of D2 is P 2 ; using the pressure wave curve chart can be more intuitive and improve work efficiency.
- the obtaining of the pulse pressure wave propagation speed C and the pulse pressure wave attenuation coefficient ⁇ is specifically the pulse pressure wave propagation velocity C calculated by the wave velocity formula, and the pulse pressure wave attenuation coefficient ⁇ calculated by the definition of the attenuation coefficient; the wave velocity formula is:
- the attenuation coefficient is defined as:
- ln is the natural logarithmic symbol.
- the step (4) is specifically as follows:
- the reflected wave is a single negative pulse pressure wave, it means that the diameter of the pipeline becomes smaller in a certain section, and the length of this section is shorter.
- the reflected wave is a single negative pulse pressure wave followed by a single positive pulse pressure wave, it means that the pipe diameter becomes smaller in a certain section, and the pipe diameter becomes larger after a certain distance. It can be judged that the blockage is a long blockage;
- the reflected wave includes two or more combinations of the above two cases, it can be determined that the clogging situation is also a combination of two or more of the above two cases.
- step (5) to obtain the blocked position of the blocked section as x and the blocked rate as S.
- the length of the blocked section is obtained as l; the first negative pulse pressure generated by the blocked section at this time
- the wave reflection wave is D3, the first mutation point of D3 is recorded as characteristic point 3, then the time of characteristic point 3 is T 3 , and the maximum value of pressure fluctuation of D3 is P 3 ;
- the blockage is a long blockage, then The first negative pulse pressure wave is followed by the first positive pulse pressure wave, the first positive pulse pressure wave is D4, and the first mutation point of D4 is recorded as characteristic point 4, then the time of characteristic point 4 is T 4 ,
- the maximum value of the pressure fluctuation of D4 is P 4 .
- k is the maximum ratio of the pressure fluctuation of the reflected wave and the incident wave at the clogging position.
- the pulse pressure wave will form a shock wave during the propagation process, and the calculation formula of the shock wave travel distance is:
- ⁇ is a nonlinear coefficient
- ⁇ 0 is the velocity of the incident wave particle
- T is the pulse pressure wave width
- ⁇ is the pi.
- the method of this embodiment is a method for detecting the clogging in the pressure pipeline by using the propagation characteristics of the pulse pressure wave, and actively launches a pulse pressure wave in the pipeline by quickly opening and closing the solenoid valve, and the pulse pressure wave propagates along the pipeline.
- reflection will occur, and then extract its incident and reflected signals, analyze the effective information in the incident wave and the reflected wave, so as to accurately determine the number and type of the jammed section, and obtain the jam position, jam rate and jam length by calculation , Simple operation and high precision.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
- Geophysics And Detection Of Objects (AREA)
- Pipeline Systems (AREA)
Abstract
A method for pressure pipe blocking status detection using a pulse pressure wave, comprising the following steps: 1, using a solenoid valve to emit a pulse pressure wave at the inlet of a pressure pipe; 2, providing a high-frequency dynamic pressure sensor A at the inlet of the pressure pipe to record a pulse pressure wave signal S1 here, and providing a high-frequency dynamic pressure sensor B at a position at a distance of L from the inlet of the pressure pipe to record a pulse pressure wave signal S2 here; 3, analyzing the S1 and the S2 to obtain the propagation velocity C of the pulse pressure wave and the attenuation coefficient η of the pulse pressure wave; and 4, analyzing the pulse pressure wave signal S2 to obtain a blocking status. In the method, the solenoid valve is rapidly opened and closed to actively emit a pulse pressure wave in the pipe, and effective information in the incident waves and the reflected waves of the wave are analyzed. Therefore, the number and types of blocked segments can be determined accurately; blocking positions, rate and length can be obtained; and the method is simple in operation and high in precision.
Description
本发明涉及管道检测技术领域，尤其涉及一种使用脉冲压力波检测压力管道内堵塞情况的方法。The invention relates to the technical field of pipeline detection, in particular to a method for detecting a blockage in a pressure pipeline using a pulse pressure wave.
随着全球化石能源的日渐枯竭以及人类对油气资源开发利用的深化，人类对油气资源的开发逐渐由陆地转入了海洋，因此作为最主要的油气输送方式，海底管道的里程也不断增长，在海洋油气的开发中，海底管道的运行状况直接关系到海上油气田的安全，而管道在运行过程中，可能会由于石蜡、沥青等固体的堆积以及天然气水合物固体的生成等各种原因造成堵塞；With the depletion of globalized fossil energy and the deepening of human exploitation of oil and gas resources, the development of human oil and gas resources has gradually shifted from land to ocean. Therefore, as the most important way of oil and gas transportation, the mileage of submarine pipelines has also continued to increase. In the development of offshore oil and gas, the operation status of submarine pipelines is directly related to the safety of offshore oil and gas fields. During the operation of pipelines, it may be blocked due to various reasons such as the accumulation of paraffin, asphalt and other solids and the formation of natural gas hydrate solids;
当管道堵塞发生后，快速实现堵塞位置和堵塞程度的检测，及时解堵以降低堵塞造成的经济损失成为石油公司越来越迫切的需求；目前常见的管道堵塞检测方法有声波检测、伽玛射线检测以及压力信号分析等方法，声波检测的操作方法是将声学传感器成对布置于监测区形成阵列，当管道内发生堵塞时，流道截面积的变化会引起压力波动，从而产生声波，堵塞区两侧的传感器接收到信号进行分析，确定堵塞的位置，但是这一方法容易受到背景噪声的干扰，影响定位的精度与准确性；γ射线法是利用γ射线的穿透特性对堵塞位置进行定位，结果较为准确，但该方法主要的局限在于当堵塞在海底管道时，操作较为麻烦，成本较高；压力信号分析法是根据管道内压力信号随管线和事件变化特点来判断堵塞位置和堵塞程度，这种方法操作简单，但检 测精度很差。When pipeline blockage occurs, it is necessary to quickly detect the location and degree of blockage, and to remove the blockage in time to reduce the economic loss caused by the blockage has become an increasingly urgent demand for oil companies; the current common pipeline blockage detection methods include acoustic wave detection and gamma rays Methods of detection and pressure signal analysis. The operation method of sound wave detection is to arrange acoustic sensors in pairs in the monitoring area to form an array. When a blockage occurs in the pipeline, the change in the cross-sectional area of the flow channel will cause pressure fluctuations, thereby generating sound waves. The sensors on both sides receive signals to analyze and determine the location of the blockage, but this method is easily interfered by background noise, which affects the accuracy and accuracy of the positioning; the gamma-ray method uses the penetration characteristics of gamma rays to locate the blockage , The result is more accurate, but the main limitation of this method is that when it is blocked in the submarine pipeline, the operation is more troublesome and the cost is higher; the pressure signal analysis method is based on the characteristics of the pressure signal in the pipeline with the pipeline and the event to determine the location and degree of blockage This method is simple to operate, but has poor detection accuracy.
发明内容Summary of the invention
为解决现有管道堵塞检测方法或容易受干扰、或成本较高、或检测精度差的问题，本发明提供了一种使用脉冲压力波检测压力管道内堵塞情况的方法。In order to solve the problems of the existing pipeline blockage detection method that is easily interfered with, or has a high cost, or poor detection accuracy, the present invention provides a method for detecting a blockage in a pressure pipeline using a pulse pressure wave.
为实现上述目的，本发明采用的技术方案是：一种使用脉冲压力波检测压力管道内堵塞情况的方法，包括以下步骤：In order to achieve the above object, the technical solution adopted by the present invention is: a method for detecting a blockage in a pressure pipe using a pulse pressure wave, including the following steps:
(1)利用电磁阀在压力管道入口处发射一段脉冲压力波；(1) Use a solenoid valve to emit a pulse pressure wave at the entrance of the pressure pipe;
(2)在压力管道入口处设置高频动态压力传感器A，高频动态压力传感器A记录下压力管道入口处的脉冲压力波信号S1，在距离压力管道入口处L距离的位置设置高频动态压力传感器B，高频动态压力传感器B记录下距离压力管道入口处L距离的位置处的脉冲压力波信号S2；(2) Set a high-frequency dynamic pressure sensor A at the entrance of the pressure pipeline. The high-frequency dynamic pressure sensor A records the pulse pressure wave signal S1 at the entrance of the pressure pipeline, and set a high-frequency dynamic pressure at a distance of L from the entrance of the pressure pipeline Sensor B, high-frequency dynamic pressure sensor B records the pulse pressure wave signal S2 at a distance L from the entrance of the pressure pipe;
(3)分析脉冲压力波信号S1与脉冲压力波信号S2，获得脉冲压力波传播速度C和脉冲压力波衰减系数η；(3) Analyze the pulse pressure wave signal S1 and the pulse pressure wave signal S2 to obtain the pulse pressure wave propagation speed C and the pulse pressure wave attenuation coefficient η;
(4)分析脉冲压力波信号S2，获取堵塞情况。(4) Analyze the pulse pressure wave signal S2 to obtain the blockage.
进一步的，所述脉冲压力波为单峰负压力波，宽度小于50ms，高频动态压力传感器A和高频动态压力传感器B的信号采集频率高于10khz。Further, the pulse pressure wave is a single peak negative pressure wave, the width is less than 50 ms, and the signal acquisition frequency of the high-frequency dynamic pressure sensor A and the high-frequency dynamic pressure sensor B is higher than 10 kHz.
进一步的，所述分析脉冲压力波信号S1与脉冲压力波信号S2具体为获得脉冲压力波信号S1的第一个入射波为D1，D1的第一个突变点记为特征点1，则特征点1的时间为T
1，D1的压力波动最值为P
1； 获得脉冲压力波信号S2的第一个入射波为D2，D2的第一个突变点记为特征点2，则特征点2的时间为T
2，D2的压力波动最值为P
2。
Further, the analysis of the pulse pressure wave signal S1 and the pulse pressure wave signal S2 specifically obtains that the first incident wave of the pulse pressure wave signal S1 is D1, and the first mutation point of D1 is recorded as the characteristic point 1, then the characteristic point The time of 1 is T 1 , and the maximum value of the pressure fluctuation of D1 is P 1 ; the first incident wave of the pulse pressure wave signal S2 obtained is D2, and the first mutation point of D2 is recorded as characteristic point 2, then the characteristic point 2 The time is T 2 , and the maximum value of the pressure fluctuation of D2 is P 2 .
进一步的，所述获得脉冲压力波传播速度C和脉冲压力波衰减系数η具体为通过波速公式计算得到脉冲压力波传播速度C，通过衰减系数定义计算得到脉冲压力波衰减系数η；所述波速公式为：Further, the obtaining of the pulse pressure wave propagation speed C and the pulse pressure wave attenuation coefficient η is specifically the pulse pressure wave propagation velocity C calculated by the wave velocity formula, and the pulse pressure wave attenuation coefficient η calculated by the definition of the attenuation coefficient; the wave velocity formula for:
所述衰减系数定义为：The attenuation coefficient is defined as:
进一步的，所述步骤(4)具体为：Further, the step (4) is specifically:
当在S2的入射波后出现了压力波动值更小的反射波，则压力管道内出现堵塞段；When a reflected wave with a smaller pressure fluctuation value appears after the incident wave of S2, a blocked section appears in the pressure pipeline;
若反射波为单个负脉冲压力波，则堵塞情况为出现短堵塞段；If the reflected wave is a single negative pulse pressure wave, the blockage is a short blockage;
若反射波为单个负脉冲压力波且后面跟随有单个正脉冲压力波，则堵塞情况为出现长堵塞段。If the reflected wave is a single negative pulse pressure wave followed by a single positive pulse pressure wave, then the blockage is a long blockage.
进一步的，还包括步骤(5)获得堵塞段的堵塞位置为x、堵塞率为S，当堵塞情况为出现长堵塞段时，获得堵塞段长度为l；此时由堵塞段产生的第一个负脉冲压力波为D3，D3的第一个突变点记为特征点3，则特征点3的时间为T
3，D3的压力波动最值为P
3；当堵塞情况为出现长堵塞段时，则第一个负脉冲压力波后面跟随有第一个正脉冲压力波，第一个正脉冲压力波为D4，D4的第一个突变点记为特征点4，则特征点4的时间为T
4，D4的压力波动最值为P
4。
Further, it also includes step (5) to obtain the blocked position of the blocked section as x and the blocked rate as S. When the blocked condition is the occurrence of a long blocked section, the length of the blocked section is l; the first one generated by the blocked section at this time The negative pulse pressure wave is D3, the first mutation point of D3 is recorded as characteristic point 3, then the time of characteristic point 3 is T 3 , and the maximum value of the pressure fluctuation of D3 is P 3 ; when the blockage is a long blockage, Then the first negative pulse pressure wave is followed by the first positive pulse pressure wave, the first positive pulse pressure wave is D4, the first mutation point of D4 is recorded as characteristic point 4, and the time of characteristic point 4 is T 4. The maximum value of the pressure fluctuation of D4 is P 4 .
进一步的，所述堵塞位置的计算公式为：Further, the calculation formula of the blocking position is:
所述堵塞段长度的计算公式为：The formula for calculating the length of the blocked section is:
进一步的，所述堵塞率的计算公式为：Further, the calculation formula of the blocking rate is:
其中：k为堵塞位置处反射波和入射波的压力波动最值比。Where: k is the maximum ratio of the pressure fluctuation of the reflected wave and the incident wave at the clogging position.
进一步的，所述堵塞位置处反射波和入射波的压力波动最值比的计算公式为：Further, the calculation formula of the maximum value ratio of the pressure fluctuation of the reflected wave and the incident wave at the clogging position is:
其中X
S为冲击波行程距离，e为自然常数。
Where X S is the shock wave travel distance and e is the natural constant.
进一步的，所述冲击波行程距离的计算公式为：Further, the calculation formula of the shock wave travel distance is:
其中：β为非线性系数，μ
0为入射波质点运动速度，T为脉冲压力波宽度，π为圆周率。
Among them: β is a non-linear coefficient, μ 0 is the incident wave particle velocity, T is the pulse pressure wave width, and π is the pi.
本发明的有益效果是：通过快速开闭电磁阀在管道内主动发射一段脉冲压力波，分析其入射波和反射波中的有效信息，能准确判断堵塞段的个数和类型，并且可以获得堵塞位置、堵塞率和堵塞长度，操作简便，精度高。The beneficial effect of the present invention is: by quickly opening and closing the solenoid valve, it actively emits a pulse pressure wave in the pipeline, analyzes the effective information in the incident wave and the reflected wave, can accurately determine the number and type of the blocked section, and can obtain the blocked Position, clogging rate and clogging length, easy to operate and high precision.
图1为本发明压力波曲线图的示意图。FIG. 1 is a schematic diagram of a pressure wave curve diagram of the present invention.
一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，包括以下步骤：A method of using pulsed pressure waves to detect blockages in a pressure pipeline is characterized by the following steps:
(1)快速开闭位于管道入口处的电磁阀在压力管道入口处向压力管道内发射一段脉冲压力波；(1) The quick opening and closing solenoid valve at the entrance of the pipeline emits a pulse pressure wave into the pressure pipeline at the entrance of the pressure pipeline;
(2)在压力管道入口处设置高频动态压力传感器A，高频动态压力传感器A记录下压力管道入口处的脉冲压力波信号S1，在距离压力管道入口处L距离的位置设置高频动态压力传感器B，高频动态压力传感器B记录下距离压力管道入口处L距离的位置处的脉冲压力波信号S2；优选的，L取50m；(2) Set a high-frequency dynamic pressure sensor A at the entrance of the pressure pipeline. The high-frequency dynamic pressure sensor A records the pulse pressure wave signal S1 at the entrance of the pressure pipeline, and set a high-frequency dynamic pressure at a distance of L from the entrance of the pressure pipeline Sensor B, high-frequency dynamic pressure sensor B records the pulse pressure wave signal S2 at a distance L from the entrance of the pressure pipe; preferably, L takes 50m;
(3)通过脉冲压力波信号S1与脉冲压力波信号S2建立压力波曲线图，分析脉冲压力波信号S1与脉冲压力波信号S2，获得脉冲压力波传播速度C和脉冲压力波衰减系数η；(3) The pressure wave curve is established by the pulse pressure wave signal S1 and the pulse pressure wave signal S2, and the pulse pressure wave signal S1 and the pulse pressure wave signal S2 are analyzed to obtain the pulse pressure wave propagation speed C and the pulse pressure wave attenuation coefficient η;
(4)分析脉冲压力波信号S2，获取堵塞情况。(4) Analyze the pulse pressure wave signal S2 to obtain the blockage.
所述脉冲压力波为单峰负压力波，宽度小于50ms，高频动态压力传感器A和高频动态压力传感器B的信号采集频率高于10khz。The pulse pressure wave is a single peak negative pressure wave, the width is less than 50 ms, and the signal acquisition frequency of the high-frequency dynamic pressure sensor A and the high-frequency dynamic pressure sensor B is higher than 10 kHz.
所述分析脉冲压力波信号S1与脉冲压力波信号S2具体为获得脉冲压力波信号S1的第一个入射波为D1，D1的第一个突变点(即动态压力信号开始突变的拐点)记为特征点1，则特征点1的时间为T
1，D1的压力波动最值为P
1；获得脉冲压力波信号S2的第一个入射波为D2，D2的第一个突变点记为特征点2，则特征点2的时间为T
2，D2的压力波动最值为P
2；使用压力波曲线图能更直观，提升工作效率。
The analysis of the pulse pressure wave signal S1 and the pulse pressure wave signal S2 is specifically to obtain the first incident wave of the pulse pressure wave signal S1 as D1, and the first mutation point of D1 (that is, the inflection point where the dynamic pressure signal starts to mutate) is written as Feature point 1, then the time of feature point 1 is T 1 , and the maximum value of the pressure fluctuation of D1 is P 1 ; the first incident wave of the pulse pressure wave signal S2 obtained is D2, and the first mutation point of D2 is recorded as the feature point 2, the time of feature point 2 is T 2 , and the maximum value of the pressure fluctuation of D2 is P 2 ; using the pressure wave curve chart can be more intuitive and improve work efficiency.
所述获得脉冲压力波传播速度C和脉冲压力波衰减系数η具体为通过波速公式计算得到脉冲压力波传播速度C，通过衰减系数定义计算得到脉冲压力波衰减系数η；所述波速公式为：The obtaining of the pulse pressure wave propagation speed C and the pulse pressure wave attenuation coefficient η is specifically the pulse pressure wave propagation velocity C calculated by the wave velocity formula, and the pulse pressure wave attenuation coefficient η calculated by the definition of the attenuation coefficient; the wave velocity formula is:
所述衰减系数定义为：The attenuation coefficient is defined as:
其中：ln为自然对数符号。Among them: ln is the natural logarithmic symbol.
所述步骤(4)具体为：The step (4) is specifically as follows:
当在S2的入射波后出现了压力波动值更小的反射波，则压力管道内出现堵塞段；When a reflected wave with a smaller pressure fluctuation value appears after the incident wave of S2, a blocked section appears in the pressure pipeline;
若反射波为单个负脉冲压力波，则说明管道在某一段管径变小，且这一段长度较短，可判断堵塞情况为出现短堵塞段；If the reflected wave is a single negative pulse pressure wave, it means that the diameter of the pipeline becomes smaller in a certain section, and the length of this section is shorter.
若反射波为单个负脉冲压力波且后面跟随有单个正脉冲压力波，则说明管道在某一段管径变小，且过一段距离后管径变大，可判断堵塞情况为出现长堵塞段；If the reflected wave is a single negative pulse pressure wave followed by a single positive pulse pressure wave, it means that the pipe diameter becomes smaller in a certain section, and the pipe diameter becomes larger after a certain distance. It can be judged that the blockage is a long blockage;
若反射波包含为以上两种情况的两个或多个组合的形式，则可判断堵塞情况也为以上两种情况的两个或多个组合的形式。If the reflected wave includes two or more combinations of the above two cases, it can be determined that the clogging situation is also a combination of two or more of the above two cases.
还包括步骤(5)获得堵塞段的堵塞位置为x、堵塞率为S，当堵塞情况为出现长堵塞段时，获得堵塞段长度为l；此时由堵塞段产生的第一个负脉冲压力波反射波为D3，D3的第一个突变点记为特征点3，则特征点3的时间为T
3，D3的压力波动最值为P
3；当堵塞情况为 出现长堵塞段时，则第一个负脉冲压力波后面跟随有第一个正脉冲压力波，第一个正脉冲压力波为D4，D4的第一个突变点记为特征点4，则特征点4的时间为T
4，D4的压力波动最值为P
4。
It also includes step (5) to obtain the blocked position of the blocked section as x and the blocked rate as S. When the blocked situation is that a long blocked section occurs, the length of the blocked section is obtained as l; the first negative pulse pressure generated by the blocked section at this time The wave reflection wave is D3, the first mutation point of D3 is recorded as characteristic point 3, then the time of characteristic point 3 is T 3 , and the maximum value of pressure fluctuation of D3 is P 3 ; when the blockage is a long blockage, then The first negative pulse pressure wave is followed by the first positive pulse pressure wave, the first positive pulse pressure wave is D4, and the first mutation point of D4 is recorded as characteristic point 4, then the time of characteristic point 4 is T 4 , The maximum value of the pressure fluctuation of D4 is P 4 .
所述堵塞位置的计算公式为：The calculation formula of the blocking position is:
所述堵塞段长度的计算公式为：The formula for calculating the length of the blocked section is:
所述堵塞率的计算公式为：The calculation formula of the blocking rate is:
其中：k为堵塞位置处反射波和入射波的压力波动最值比。Where: k is the maximum ratio of the pressure fluctuation of the reflected wave and the incident wave at the clogging position.
所述堵塞位置处反射波和入射波的压力波动最值比的计算公式为：The formula for calculating the maximum value ratio of the pressure fluctuation of the reflected wave and the incident wave at the clogging position is:
其中X
S为冲击波行程距离，e为自然常数。
Where X S is the shock wave travel distance and e is the natural constant.
脉冲压力波在传播过程中会形成冲击波，所述冲击波行程距离的计算公式为：The pulse pressure wave will form a shock wave during the propagation process, and the calculation formula of the shock wave travel distance is:
其中：β为非线性系数，μ
0为入射波质点运动速度，T为脉冲压力波宽度，π为圆周率。
Among them: β is a nonlinear coefficient, μ 0 is the velocity of the incident wave particle, T is the pulse pressure wave width, and π is the pi.
本实施例的方法是一种利用脉冲压力波传播特性对压力管道内堵塞情况进行检测的方法，通过快速开闭电磁阀在管道内主动发射一 段脉冲压力波，该脉冲压力波沿管道进行传播，遇到堵塞时会发生反射，然后提取其入射和反射信号，分析其入射波和反射波中的有效信息，从而准确判断堵塞段的个数和类型，通过计算得到堵塞位置、堵塞率和堵塞长度，操作简便，精度高。The method of this embodiment is a method for detecting the clogging in the pressure pipeline by using the propagation characteristics of the pulse pressure wave, and actively launches a pulse pressure wave in the pipeline by quickly opening and closing the solenoid valve, and the pulse pressure wave propagates along the pipeline. When encountering a jam, reflection will occur, and then extract its incident and reflected signals, analyze the effective information in the incident wave and the reflected wave, so as to accurately determine the number and type of the jammed section, and obtain the jam position, jam rate and jam length by calculation , Simple operation and high precision.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明披露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above is only the preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited to this, any person skilled in the art in the technical field within the technical scope disclosed by the present invention, according to the technical solutions of the present invention Equivalent substitutions or changes to the inventive concept should be covered within the protection scope of the present invention.
Claims (10)
- 一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，包括以下步骤：A method of using pulsed pressure waves to detect blockages in a pressure pipeline is characterized by the following steps:(1)在压力管道入口处发射一段脉冲压力波；(1) Launch a pulse pressure wave at the entrance of the pressure pipeline;(2)在压力管道入口处设置高频动态压力传感器A，高频动态压力传感器A记录下压力管道入口处的脉冲压力波信号S1，在距离压力管道入口处L距离的位置设置高频动态压力传感器B，高频动态压力传感器B记录下距离压力管道入口处L距离的位置处的脉冲压力波信号S2；(2) Set a high-frequency dynamic pressure sensor A at the entrance of the pressure pipeline. The high-frequency dynamic pressure sensor A records the pulse pressure wave signal S1 at the entrance of the pressure pipeline, and set a high-frequency dynamic pressure at a distance of L from the entrance of the pressure pipeline Sensor B, high-frequency dynamic pressure sensor B records the pulse pressure wave signal S2 at a distance L from the entrance of the pressure pipe;(3)分析脉冲压力波信号S1与脉冲压力波信号S2，获得脉冲压力波传播速度C和脉冲压力波衰减系数η；(3) Analyze the pulse pressure wave signal S1 and the pulse pressure wave signal S2 to obtain the pulse pressure wave propagation speed C and the pulse pressure wave attenuation coefficient η;(4)分析脉冲压力波信号S2，获取堵塞情况。(4) Analyze the pulse pressure wave signal S2 to obtain the blockage.
- 根据权利要求1所述的一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，所述脉冲压力波为单峰负压力波，宽度小于50ms，高频动态压力传感器A和高频动态压力传感器B的信号采集频率高于10khz，脉冲压力波由电磁阀在压力管道入口处快速开闭产生。A method for detecting clogging in a pressure pipeline using a pulse pressure wave according to claim 1, wherein the pulse pressure wave is a single-peak negative pressure wave, the width is less than 50 ms, and the high-frequency dynamic pressure sensor A and high The signal acquisition frequency of the frequency dynamic pressure sensor B is higher than 10khz, and the pulse pressure wave is generated by the rapid opening and closing of the solenoid valve at the entrance of the pressure pipeline.
- 根据权利要求1所述的一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，所述分析脉冲压力波信号S1与脉冲压力波信号S2具体为获得脉冲压力波信号S1的第一个入射波为D1，D1的第一个突变点记为特征点1，则特征点1的时间为T 1，D1的压力波动最值为P 1；获得脉冲压力波信号S2的第一个入射波为D2，D2的第一个突变点记为特征点2，则特征点2的时间为T 2，D2的压力波动最值 为P 2。 The method for detecting blockages in a pressure pipe using pulse pressure waves according to claim 1, wherein the analysis of the pulse pressure wave signal S1 and the pulse pressure wave signal S2 is specifically the first step to obtain the pulse pressure wave signal S1 An incident wave is D1, the first mutation point of D1 is recorded as characteristic point 1, then the time of characteristic point 1 is T 1 , and the maximum value of the pressure fluctuation of D1 is P 1 ; the first one to obtain the pulse pressure wave signal S2 The incident wave is D2, the first mutation point of D2 is recorded as characteristic point 2, then the time of characteristic point 2 is T 2 , and the maximum value of the pressure fluctuation of D2 is P 2 .
- 根据权利要求1所述的一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，所述获得脉冲压力波传播速度C和脉冲压力波衰减系数η具体为通过波速公式计算得到脉冲压力波传播速度C，通过衰减系数定义计算得到脉冲压力波衰减系数η；所述波速公式为：The method of using pulsed pressure waves to detect blockages in a pressure pipeline according to claim 1, characterized in that the obtained pulsed pressure wave propagation speed C and pulsed pressure wave attenuation coefficient η are specifically calculated by the wave velocity formula. The pressure wave propagation velocity C is calculated by the attenuation coefficient definition and the pulse pressure wave attenuation coefficient η; the wave velocity formula is:
所述衰减系数定义为：The attenuation coefficient is defined as:
- 根据权利要求1所述的一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，所述步骤(4)具体为：A method for detecting blockage in a pressure pipeline using pulse pressure waves according to claim 1, wherein the step (4) is specifically:当在S2的入射波后出现了压力波动值更小的反射波，则压力管道内出现堵塞段；When a reflected wave with a smaller pressure fluctuation value appears after the incident wave of S2, a blocked section appears in the pressure pipeline;若反射波为单个负脉冲压力波，则堵塞情况为出现短堵塞段；If the reflected wave is a single negative pulse pressure wave, the blockage is a short blockage;若反射波为单个负脉冲压力波且后面跟随有单个正脉冲压力波，则堵塞情况为出现长堵塞段。If the reflected wave is a single negative pulse pressure wave followed by a single positive pulse pressure wave, then the blockage is a long blockage.
- 根据权利要求1所述的一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，还包括步骤(5)获得堵塞段的堵塞位置为x、堵塞率为S，当堵塞情况为出现长堵塞段时，获得堵塞段长度为l；此时由堵塞段产生的第一个负脉冲压力波为D3，D3的第一个突变点记为特征点3，则特征点3的时间为T 3，D3的压力波动最值为P 3；当 堵塞情况为出现长堵塞段时，则第一个负脉冲压力波后面跟随有第一个正脉冲压力波，第一个正脉冲压力波为D4，D4的第一个突变点记为特征点4，则特征点4的时间为T 4，D4的压力波动最值为P 4。 A method for detecting clogging in a pressure pipeline using pulse pressure waves according to claim 1, further comprising the step (5) of obtaining the clogging position of the clogging section as x and the clogging rate as S, when the clogging condition is When there is a long clogged section, the length of the clogged section is l; at this time, the first negative pulse pressure wave generated by the clogged section is D3, and the first mutation point of D3 is recorded as characteristic point 3, then the time of characteristic point 3 is The maximum value of the pressure fluctuation of T 3 and D3 is P 3 ; when the clogging situation is the occurrence of a long clogging segment, the first negative pulse pressure wave is followed by the first positive pulse pressure wave, and the first positive pulse pressure wave is D4, the first mutation point of D4 is recorded as characteristic point 4, then the time of characteristic point 4 is T 4 , and the maximum value of the pressure fluctuation of D4 is P 4 .
- 根据权利要求6所述的一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，所述堵塞位置的计算公式为：A method for detecting clogging in a pressure pipe using pulse pressure waves according to claim 6, wherein the calculation formula of the clogging position is:
所述堵塞段长度的计算公式为：The formula for calculating the length of the blocked section is:
- 根据权利要求6所述的一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，所述堵塞率的计算公式为：A method for detecting clogging in a pressure pipe using pulse pressure waves according to claim 6, wherein the calculation formula of the clogging rate is:
其中：k为堵塞位置处反射波和入射波的压力波动最值比。Where: k is the maximum ratio of the pressure fluctuation of the reflected wave and the incident wave at the clogging position. - 根据权利要求8所述的一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，所述堵塞位置处反射波和入射波的压力波动最值比的计算公式为：A method for detecting clogging in a pressure pipe using a pulse pressure wave according to claim 8, wherein the formula for calculating the maximum value ratio of the pressure fluctuation of the reflected wave and the incident wave at the clogged position is:
其中X S为冲击波行程距离，e为自然常数。 Where X S is the shock wave travel distance and e is the natural constant. - 根据权利要求9所述的一种使用脉冲压力波检测压力管道内堵塞情况的方法，其特征在于，所述冲击波行程距离的计算公式为：A method for detecting blockages in a pressure pipe using pulse pressure waves according to claim 9, wherein the calculation formula of the travel distance of the shock wave is:
其中：β为非线性系数，μ 0为入射波质点运动速度，T为脉冲压力波 宽度，π为圆周率。 Among them: β is a nonlinear coefficient, μ 0 is the velocity of the incident wave particle, T is the pulse pressure wave width, and π is the pi.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811627188.7 | 2018-12-28 | ||
| CN201811627188.7A CN109780447B (en) | 2018-12-28 | 2018-12-28 | Method for detecting blockage condition in pressure pipeline by using pulse pressure wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020134702A1 true WO2020134702A1 (en) | 2020-07-02 |
Family
ID=66498804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2019/119199 WO2020134702A1 (en) | 2018-12-28 | 2019-11-18 | Method for pressure pipe blocking status detection using pulse pressure wave |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109780447B (en) |
| WO (1) | WO2020134702A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3110977C (en) | 2018-12-05 | 2023-07-11 | Halliburton Energy Services, Inc. | Detecting and quantifying liquid pools in hydrocarbon fluid pipelines |
| CN109780447B (en) * | 2018-12-28 | 2020-11-06 | 大连理工大学 | Method for detecting blockage condition in pressure pipeline by using pulse pressure wave |
| CN113280266B (en) * | 2021-06-21 | 2022-10-04 | 上海天麦能源科技有限公司 | Urban gas medium-low pressure pipe network blockage diagnosis and positioning method and system |
| CN113670512B (en) * | 2021-07-16 | 2023-08-18 | 国家石油天然气管网集团有限公司 | Pipe cleaner blocking detection method based on mode maximum single-scale correlation |
| CN113551699B (en) * | 2021-09-17 | 2022-01-11 | 山东德仕化工有限公司 | Method and equipment for detecting blockage of oil well pipeline |
| CN113958287B (en) * | 2021-12-13 | 2022-04-05 | 德仕能源科技集团股份有限公司 | Oil well pipeline blockage removing method, equipment and medium based on artificial intelligence |
| CN116821845A (en) * | 2023-06-20 | 2023-09-29 | 郑州大学 | Pipeline siltation condition diagnosis method and device based on multi-sensor data fusion |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0300647A1 (en) * | 1987-07-08 | 1989-01-25 | BRITISH TELECOMMUNICATIONS public limited company | Duct testing |
| CN104295907A (en) * | 2014-08-12 | 2015-01-21 | 上海中联重科桩工机械有限公司 | System and method for detecting pipeline blockage position |
| GB2517411A (en) * | 2013-07-17 | 2015-02-25 | Atmos Wave Ltd | Monitoring pipelines |
| CN107830412A (en) * | 2017-10-30 | 2018-03-23 | 重庆科技学院 | The incomplete blocking position detecting system of pipeline and detection method |
| CN109780447A (en) * | 2018-12-28 | 2019-05-21 | 大连理工大学 | A method of using stopping state in pulsed pressure wave detection pressure pipeline |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08159400A (en) * | 1994-12-02 | 1996-06-21 | Tokyo Gas Co Ltd | Unprocessed feed pipe retrieving system |
| JP2001090900A (en) * | 1999-09-24 | 2001-04-03 | Nkk Corp | Method and device for detecting position of foreign matter in liquid transporting pipeline |
| CN102588743B (en) * | 2012-03-08 | 2013-08-07 | 东北大学 | Device and method for real-time tracking and accurate positioning for internal detector in pipeline |
| GB2506837B (en) * | 2012-08-07 | 2017-08-09 | Atmos Wave Ltd | A method of identifying leaks in a fluid carrying conduit |
| CN107329167B (en) * | 2017-06-09 | 2019-05-07 | 中国石油大学(北京) | Detect method, system and the computer storage media of pipeline sediment distribution |
| CN108626579A (en) * | 2018-04-04 | 2018-10-09 | 哈尔滨商业大学 | A kind of oil pipeline wax deposition quantity measuring method based on pressure wave method |
-
2018
- 2018-12-28 CN CN201811627188.7A patent/CN109780447B/en not_active Expired - Fee Related
-
2019
- 2019-11-18 WO PCT/CN2019/119199 patent/WO2020134702A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0300647A1 (en) * | 1987-07-08 | 1989-01-25 | BRITISH TELECOMMUNICATIONS public limited company | Duct testing |
| GB2517411A (en) * | 2013-07-17 | 2015-02-25 | Atmos Wave Ltd | Monitoring pipelines |
| CN104295907A (en) * | 2014-08-12 | 2015-01-21 | 上海中联重科桩工机械有限公司 | System and method for detecting pipeline blockage position |
| CN107830412A (en) * | 2017-10-30 | 2018-03-23 | 重庆科技学院 | The incomplete blocking position detecting system of pipeline and detection method |
| CN109780447A (en) * | 2018-12-28 | 2019-05-21 | 大连理工大学 | A method of using stopping state in pulsed pressure wave detection pressure pipeline |
Non-Patent Citations (1)
| Title |
|---|
| "Detecting System of Hydrate Blockage in Gas Pipeline with Pressure Wave Propagation Method", WANG, ZHE, 2018-04-10 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109780447A (en) | 2019-05-21 |
| CN109780447B (en) | 2020-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020134702A1 (en) | Method for pressure pipe blocking status detection using pulse pressure wave | |
| Meng et al. | Experimental study on leak detection and location for gas pipeline based on acoustic method | |
| CN103644457B (en) | A kind of localization method of line clogging and device | |
| CN101592288B (en) | Method for identifying pipeline leakage | |
| Tariq et al. | Data-driven application of MEMS-based accelerometers for leak detection in water distribution networks | |
| CN104373821A (en) | Natural gas pipeline safety monitoring device based on acoustical science active spurring | |
| EA028919B1 (en) | Method and system for continuous remote monitoring of the integrity of pressurized pipelines and properties of the fluids transported | |
| EP3938622A1 (en) | Detecting events at a flow line using acoustic frequency domain features | |
| CN110469782B (en) | Pipeline leakage positioning device based on self-adaptive filter | |
| US20230043381A1 (en) | Detecting flow obstruction events within a flow line using acoustic frequency domain features | |
| CN105954358B (en) | A kind of small defect location detection method of supersonic guide-wave that TR is combined with Duffing systems | |
| US20210285324A1 (en) | Method for Determining the Integrity of a Solid Bonding between a Wellbore and a Casing | |
| CN110687592B (en) | Microseism seismic phase identification first arrival picking method, device and storage medium | |
| CN105909980A (en) | Underground pipeline leakage point positioning method based on combination of amplitude fading and correlative detection | |
| Mostafapour et al. | Leakage locating in underground high pressure gas pipe by acoustic emission method | |
| US9261484B1 (en) | Acoustic waveguide for the detection and characterization of obstructions in liquid-filled tubes | |
| Ahmad et al. | Industrial fluid pipeline leak detection and localization based on a multiscale Mann-Whitney test and acoustic emission event tracking | |
| CN115184455A (en) | Method and system for sensing acoustic characteristics of corrosion defects of pressure pipeline | |
| Yang et al. | Multi-acoustic-wave-feature-based method for detection and quantification of downhole tubing leakage | |
| Wu et al. | Novel signal denoising approach for acoustic leak detection | |
| Lanjile et al. | Exploiting multi-modal sensing for increased detection fidelity of pipeline leakage | |
| CA3066808C (en) | Automated determination of valve closure and inspection of a flowline | |
| Chen et al. | Using acoustic technique to detect leakage in city gas pipelines | |
| Huiqin et al. | Research on Wavelet Threshold Denoising Method of Ultrasonic Echo Signal in Ultrasonic Drilling Fluid Leak Detection System | |
| CN111608650B (en) | Method for detecting oil well oil pipe and casing pipe defects by using infrasonic waves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19906050 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 19906050 Country of ref document: EP Kind code of ref document: A1 |