CN205090197U - Leak detection system and monitoring facilities of pipeline - Google Patents

Abstract

The utility model relates to a pipeline leakage monitoring system and monitoring equipment. The monitoring equipment includes a data acquisition module, which is used to obtain infrasonic signal, pressure, temperature and flow data in the pipeline; a data processing module, which is used to perform infrasonic leak detection according to the infrasonic signal to obtain the leakage state and time of leakage of the pipeline, according to Negative pressure wave leakage detection is performed on pressure and temperature data to obtain the leakage state and time of leakage of the pipeline, and flow balance leakage detection is performed based on flow data to obtain the leakage state of the pipeline; the data output module is used to output The obtained leakage occurrence time and/or the leakage occurrence time obtained from the detection of the infrasonic wave signal are sent to the server. The utility model integrates three leakage monitoring methods of infrasonic wave, negative pressure wave and flow balance into one leakage monitoring device, which can achieve the mutual complementarity of various methods, improve the leakage alarm rate, and reduce the false alarm rate and missed alarm rate.

Description

Pipeline leakage monitoring system and monitoring equipment

technical field

The utility model relates to the technical field of oil and gas pipeline leakage monitoring, in particular to a pipeline leakage monitoring system and monitoring equipment.

Background technique

With the large-scale investment and construction of oil and gas pipelines brought about by the rapid economic development of our country, the problems of oil and gas pipeline leakage, blockage and defects are becoming more and more serious. The operating data is read manually, which is very unfavorable to the safe operation of the pipeline. It is estimated that the output value of oil and gas pipeline leakage monitoring and detection system products alone will be close to 100 billion. In the long run, in addition to more reliable and effective technical means and products to ensure the real-time performance, accuracy and effectiveness of leakage monitoring, as well as high positioning accuracy and low false alarm rate, the pipeline leakage monitoring industry needs more Long-term high-quality localization services and expert analysis are required.

With the passage of time, in recent years, more and more pipeline leakage monitoring devices have been applied to the domestic pipeline leakage monitoring market, and the monitoring equipment on the market is generally based on a single negative pressure wave method, infrasonic wave method or flow method. Whether the pipeline leaks, both the negative pressure wave method and the infrasonic wave method can monitor whether the pipeline leaks and the time when the leakage occurs, while the negative pressure wave method has a large error in the monitoring method, and the flow monitoring method can only monitor whether the pipeline leaks and cannot monitor the leakage Therefore, based on the existing leak detection equipment, the leak alarm rate is generally low, and the false alarm rate and false negative rate are high. However, there is an urgent need for a leak detection system with a high leak alarm rate, a low false positive rate, and a low negative rate in the market. Leakage monitoring equipment needs a leakage monitoring method and system that can more quickly and accurately locate the position of the pipeline section where the leakage point is located when a pipeline leak occurs.

Utility model content

The purpose of this utility model is to solve the problems of low leakage alarm rate, high false alarm rate and false alarm rate existing in the existing pipeline leakage monitoring equipment, and the existing pipeline leakage monitoring device cannot be timely, fast and accurate when the pipeline leaks The problem of locating the position of the pipe section where the leakage point is located, thereby providing a pipeline leakage monitoring system and monitoring equipment.

In a first aspect, the utility model provides a leakage monitoring device. The device includes: a data acquisition module for acquiring infrasonic signal, pressure, temperature and flow data in the pipeline; connected with the data acquisition module, it is used to perform infrasonic leakage detection according to the infrasonic signal to obtain the leakage status and When the leakage occurs, the negative pressure wave leakage detection is performed according to the pressure and temperature data to obtain the leakage state and leakage occurrence time of the pipeline, and the data processing module is used to obtain the leakage state of the pipeline by performing flow balance leakage detection according to the flow data; The data processing module is connected to the data output module for outputting the leak occurrence time obtained from the infrasonic wave signal detection and/or the leakage occurrence time obtained from the infrasonic wave signal detection to the server.

Preferably, the leakage monitoring device further includes an infrasonic signal conditioning module connected to the data acquisition module and the data processing module, and is used for amplifying, filtering and analog-to-digital conversion processing of the acquired infrasonic signal.

Further preferably, the infrasound wave signal processing module is also connected to a GPS module, and the GPS module is used to receive a GPS antenna to obtain a standard time signal from a satellite.

Preferably, the leakage monitoring device further includes a power supply module connected to the data processing module for supplying power to the leakage monitoring device.

Further preferably, the power supply module includes a solar cell assembly and a storage battery, and the solar energy is converted into electrical energy by the solar cell assembly and stored in the storage battery.

In the second aspect, the utility model provides a pipeline leakage monitoring system. The system includes two leak monitoring devices as described above.

Preferably, the pipeline leakage monitoring system further includes a server, a pipeline, two pressure/temperature/flow data acquisition devices and two infrasonic sensors, and the two infrasonic sensors are respectively connected to two ends of the pipeline for The infrasonic signals acquired respectively are transmitted to the leakage monitoring equipment connected thereto; the two pressure/temperature/flow data acquisition devices are respectively connected to the two leakage monitoring equipments for transmitting the acquired temperature, pressure and flow data to the leakage monitoring equipment connected thereto; the two leakage monitoring equipment are respectively connected to the server, and are used to perform leakage detection according to the acquired infrasonic wave, temperature, pressure and flow data to obtain the leakage state and the time when the leakage occurs of the pipeline; The above-mentioned server is used for calculating according to the leakage occurrence time detected by the two leakage monitoring devices to obtain the specific leakage position of the pipeline.

Beneficial effects of the utility model: through the integration of infrasonic wave, negative pressure wave, and flow balance three leakage monitoring methods into one leakage monitoring equipment, various methods can complement each other, improve leakage alarm rate, reduce false alarm rate and missed alarm Rate. The pipeline leakage monitoring system based on two leakage monitoring equipment and a server can quickly and accurately locate the location of the pipeline section where the leakage point is located when the pipeline leaks, which can not only reduce the cost, but also reduce the workload, and can be widely used in oil pipelines , natural gas pipelines and oil and gas mixed pipeline leakage monitoring and other fields.

Description of drawings

Fig. 1 is a structural block diagram of a pipeline leakage monitoring device according to an embodiment of the present invention;

Fig. 2 is a structural block diagram of a server for locating pipeline leakage points according to an embodiment of the present invention;

Fig. 3 is a structural block diagram of a pipeline leakage monitoring system according to an embodiment of the present invention;

Fig. 4 is a flow chart of a method for pipeline monitoring by leakage monitoring equipment according to an embodiment of the present invention; and

Fig. 5 is a flowchart of a method for a server to locate a pipeline leakage point based on a leakage monitoring device according to an embodiment of the present invention.

detailed description

In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the utility model, and to make the above-mentioned purpose, features and advantages of the embodiments of the utility model more obvious and easy to understand, the following is a description of the utility model through the accompanying drawings and embodiments The technical scheme of the utility model is further described in detail. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

Fig. 1 is a structural block diagram of a pipeline leakage monitoring device according to an embodiment of the present invention.

As shown in FIG. 1 , the pipeline leakage monitoring device according to the embodiment of the present invention includes: a data acquisition module, an infrasonic signal conditioning module, a GPS module, a data processing module, a data output module, and a power supply module.

The data acquisition module is connected with the infrasonic signal conditioning module, which is mainly responsible for collecting signal data in the pipeline. The data acquisition module is divided into an infrasonic signal acquisition module, a pressure/temperature data acquisition module and a flow data acquisition module. The infrasonic signal acquisition module is used to acquire The infrasound signal, the pressure/temperature data module is used to obtain pressure and temperature data, and the flow data acquisition module is used to obtain flow data. Among them, the infrasonic signal acquisition module is specifically an infrasonic sensor interface, which can be connected to an external infrasonic sensor and send the infrasonic signal collected by the infrasonic sensor to the data processing module; the pressure/temperature data module is specifically a pressure/temperature data transmission network port, which can be connected to an external pressure/temperature /Flow data acquisition device (SCADA system or RTU/PRC equipment) and send the temperature and pressure data collected by the SCADA system or RTU/PRC equipment to the data processing module; the flow data acquisition module is specifically the flow data output network port, which can be externally connected to the pressure /temperature/flow data acquisition device (SCADA system or RTU/PRC equipment) and send the flow data collected by the SCADA system or RTU/PRC equipment to the data processing module.

The GPS module is connected with the infrasonic signal conditioning module, and is responsible for receiving the standard time signal obtained from the satellite by the GPS antenna and sending it to the infrasonic signal conditioning module.

The infrasonic signal conditioning module is specifically a hardware board, which is also connected with the data processing module. Infrasonic waveform GPS timing processing.

The data processing module is also respectively connected with the pressure/temperature data acquisition module and the flow data acquisition module in the data output module and the data acquisition module, and is mainly responsible for receiving the infrasonic signal output by the infrasonic signal conditioning module and the pressure sent by the pressure/temperature data acquisition module. , the temperature data and the flow data sent by the flow data acquisition module, and responsible for outputting the leakage occurrence time obtained by the data processing module. Among them, the data processing module is mainly divided into an infrasound wave processing module, a negative pressure wave processing module and a flow balance processing module. The infrasonic wave processing module is mainly responsible for the infrasonic wave leakage detection based on the infrasonic wave signal to obtain the leakage status and leakage occurrence time of the pipeline. The negative pressure wave processing module is mainly responsible for the negative pressure wave leakage detection based on the pressure and temperature data to obtain the pipeline leakage state and The moment the leak occurs. Both the infrasonic wave processing module and the negative pressure wave processing module first determine whether a leak occurs, and if so, further determine the time when the leak occurs. The flow balance processing module is mainly responsible for flow balance leakage detection based on the flow data to obtain the leakage status of the pipeline. The three modules complement each other to achieve the complementarity of various methods, improve the leakage alarm rate, and reduce the false alarm rate and missed alarm rate. .

The data output module outputs the leakage occurrence time obtained from the detection of the infrasonic wave signal and/or the leakage occurrence time obtained from the detection of the infrasound wave signal. The data output module can specifically be a data output network port, which transmits data to the server by connecting a network cable. Of course, the data output module can also be a wireless communication module, which transmits data to the server through a wireless network.

The power supply module is connected with the data processing module, and is mainly responsible for supplying power to the entire leakage monitoring equipment. The power supply module includes a storage battery and a solar panel assembly connected thereto. The application scenario of this solution is that when the installation environment of the leakage monitoring equipment does not have the power supply, the solar energy can be converted into electrical energy through the solar panel assembly and stored in the battery.

Fig. 2 is a structural block diagram of a server for locating pipeline leakage points according to an embodiment of the present invention.

As shown in FIG. 2, the server according to the embodiment of the present invention includes a data receiving module and a processor. The data receiving module is used to receive the pipeline leakage occurrence time t1 obtained from the infrasonic wave leakage detection by the leakage monitoring equipment located at the head end of the pipeline according to the infrasonic wave signal and/or the pipeline leakage occurrence time t2 obtained from the negative pressure wave leakage detection based on the pressure and temperature data , and/or receive the pipeline leakage occurrence time t3 obtained from the infrasonic wave leakage detection by the leakage monitoring equipment located at the end of the pipeline according to the infrasonic wave signal and/or the pipeline leakage occurrence time t4 obtained from the negative pressure wave leakage detection based on the pressure and temperature data.

The processor is connected with the data receiving module, and is mainly responsible for calculating the specific leakage position of the pipeline according to the received pipeline leakage occurrence time value. Specifically, the processor can substitute the received time values t1 and t3 of the occurrence of pipeline leakage into the leakage point location formula of the infrasonic method , and/or substitute t2 and t4 into the leakage point location formula of negative pressure wave method The specific leakage position of the pipeline is calculated, where L is the length of the pipeline between the head-end leakage monitoring equipment and the tail-end leakage monitoring equipment, v is the sound wave transmission velocity of the pipeline medium, and X is the distance between the leakage point and the tail-end leakage monitoring equipment. distance. Obviously, according to the embodiment of the present invention, the specific leak point of the pipeline can be judged based on the negative pressure wave method, and the specific leak point of the pipeline can also be judged based on the infrasonic wave method, and the leak point obtained by these two calculations may be the same point, There may also be deviations that are not at the same point. Calculating the leak point through two sets of data can more accurately determine the location of the leak point.

Fig. 3 is a structural block diagram of a pipeline leakage monitoring system according to an embodiment of the present invention.

As shown in FIG. 3 , the pipeline leakage monitoring system according to the embodiment of the present invention includes the above-mentioned leakage monitoring equipment and server, as well as pipelines, infrasonic sensors, and pressure/temperature/flow data acquisition devices.

The leakage monitoring equipment in this embodiment includes two sets, and the infrasonic wave sensor includes two, and the two sensors are respectively installed at the head end and the tail end of the pipeline, the head end infrasonic wave sensor is connected with a leakage monitoring equipment, and the tail end infrasonic wave sensor is connected with a They are connected to two leak monitoring devices, and respectively send the monitored infrasonic signals in the pipeline to the respectively connected leak monitoring devices. Two pressure/temperature/flow data acquisition devices, which can be SCADA system or RTU/PRC equipment. Connect with two leakage monitoring equipment respectively, and send the pressure, temperature and flow data collected respectively to the leakage monitoring equipment connected respectively. The server is connected to the above two leakage monitoring devices respectively, and the leakage point of the pipeline is calculated according to the leakage occurrence time sent by the two leakage monitoring devices, that is, calculated according to the time difference between the infrasonic wave or pressure wave generated by the leakage reaching the two leakage monitoring devices in the pipeline leak point.

Fig. 4 is a flowchart of a pipeline monitoring method performed by a leakage monitoring device according to an embodiment of the present invention.

In step 401, the infrasonic signal, pressure, temperature and flow data in the pipeline are acquired.

In step 402, the infrasonic wave leak detection is performed according to the infrasonic wave signal in step 401 to obtain the leakage state and leakage occurrence time of the pipeline, and the negative pressure wave leakage detection is carried out according to the pressure and temperature data in step 401 to obtain the leakage state of the pipeline and the time when the leakage occurs, the flow balance leakage detection is performed according to the flow data in step 401 to obtain the leakage state of the pipeline.

In step 403, output the leakage occurrence time detected according to the infrasonic wave signal in step 402 and/or the leakage occurrence time detected according to the infrasonic wave signal to the server.

Fig. 5 is a flowchart of a method for a server to locate a pipeline leakage point based on a leakage monitoring device according to an embodiment of the present invention.

In step 501, the pipeline leakage occurrence time t1 obtained by the leakage monitoring equipment located at the head end of the pipeline through infrasonic wave leakage detection according to the infrasonic wave signal and/or the pipeline leakage occurrence time t2 obtained by negative pressure wave leakage detection according to the pressure and temperature data , and/or the pipeline leakage occurrence time t3 obtained by the infrasonic wave leakage detection based on the infrasonic wave signal by the leakage monitoring equipment at the end of the pipeline, and/or the pipeline leakage occurrence time t4 obtained by the negative pressure wave leakage detection based on the pressure and temperature data.

In step 502, the specific leakage position of the pipeline is calculated according to the time value of pipeline leakage received in step 501.

Specifically include: substituting the received pipeline leakage occurrence time value into the leakage point positioning formula of the infrasonic method And/or negative pressure wave method leak point location formula Calculate the specific leakage position of the pipeline, where L is the length of the pipeline between the head leakage monitoring equipment and the tail leakage monitoring equipment, v is the sound wave transmission speed of the pipeline medium, and X is the distance between the leakage point and the tail leakage monitoring equipment. The distance between end leak monitoring devices.

As mentioned above, the utility model can be used to solve the problems of low leakage alarm rate, high false alarm rate and false alarm rate existing in the existing pipeline leakage monitoring equipment, and the existing pipeline leakage monitoring device cannot detect the leakage in time when the pipeline leaks. Quickly and accurately locate the problem of the location of the pipe segment where the leak point is located. Through the leakage monitoring equipment that integrates the three leakage monitoring methods of infrasonic wave, negative pressure wave and flow balance, various methods can complement each other, improve the leakage alarm rate, and reduce the false alarm rate and missed alarm rate. The pipeline leakage monitoring system based on two leakage monitoring equipment and a server can quickly and accurately locate the location of the pipeline section where the leakage point is located when the pipeline leaks, which can not only reduce the cost, but also reduce the workload, and can be widely used in oil pipelines , natural gas pipelines and oil and gas mixed pipeline leakage monitoring and other fields.

The specific implementation manners described above have further described the purpose, technical solutions and beneficial effects of the present utility model in detail. Within the protection scope of the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (7)

1. a leakage monitoring equipment, is characterized in that, comprising:

For obtaining the data acquisition module of infrasonic wave signal, pressure, temperature and data on flows in pipeline;

Be connected with described data acquisition module, for carrying out infrasonic wave Leak testtion according to infrasonic wave signal to draw the leak condition of pipeline and to leak the generation moment, carry out suction wave Leak testtion to draw the leak condition of pipeline and to leak the generation moment according to pressure, temperature data, and carry out flow equilibrium Leak testtion to draw the data processing module of the leak condition of pipeline according to data on flows;

Be connected with described data processing module, the moment occur for exporting the leakage drawn according to infrasonic wave input and/or according to the leakage that infrasonic wave input draws, the data outputting module of moment to server occurs.

2. leakage monitoring equipment according to claim 1, it is characterized in that, also comprise the infrasonic wave Signal-regulated kinase be connected respectively with described data acquisition module and described data processing module, for being carried out by the infrasonic wave signal of acquisition amplifying, filtering and analog-to-digital conversion process.

3. leakage monitoring equipment according to claim 2, is characterized in that, described infrasonic wave signal processing module is also connected with GPS module, and described GPS module to obtain the time signal of standard from satellite for receiving gps antenna.

4. leakage monitoring equipment according to claim 1, is characterized in that, also comprise power supply module, and it is connected with described data processing module, for powering to described leakage monitoring equipment.

5. leakage monitoring equipment according to claim 4, is characterized in that, described power supply module comprises solar module and storage battery, converts solar energy to power storage in described storage battery by described solar module.

6. line leakage system, is characterized in that, comprises two leakage monitoring equipment as claimed in claim 1.

7. line leakage system according to claim 6, is characterized in that, also comprises server, pipeline, two Pressure/Temperature/flow data collector devices and two infrasonic sensors,

Described two infrasonic sensors are connected on the two ends of described pipeline respectively, for the infrasonic wave Signal transmissions extremely connected leakage monitoring equipment that will obtain separately;

Described two Pressure/Temperatures/flow data collector device respectively with described two leakage monitoring equipment connections, temperature, pressure and data on flows for being obtained transfer to connected leakage monitoring equipment;

Described two leakage monitoring equipment are connected with described server respectively, for carrying out Leak testtion according to the infrasonic wave obtained, temperature, pressure and data on flows to obtain the leak condition of pipeline and to leak the generation moment;

Described server, carries out for there is the moment according to the leakage of described two leakage monitoring Equipment Inspections the concrete leak position calculating to draw pipeline.