CN112780951A - Method, device and system for detecting storage tank and pipeline invasion event - Google Patents
Method, device and system for detecting storage tank and pipeline invasion event Download PDFInfo
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- CN112780951A CN112780951A CN201911084244.1A CN201911084244A CN112780951A CN 112780951 A CN112780951 A CN 112780951A CN 201911084244 A CN201911084244 A CN 201911084244A CN 112780951 A CN112780951 A CN 112780951A
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- 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
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
- B65D90/50—Arrangements of indicating or measuring devices of leakage-indicating devices
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- 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
- F17D5/02—Preventing, monitoring, or locating loss
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The embodiment of the invention provides a method, a device and a system for detecting an intrusion event of a storage tank and a pipeline, and belongs to the technical field of storage tank safety detection. The method comprises the following steps: acquiring an optical fiber optical signal after passing through the optical fiber; controlling the optical fiber optical signal to be coherent with a reference optical signal to form an interference optical signal; processing the interference light signal to obtain phase change and light intensity change corresponding to the interference light signal; determining a vibration signal based on the phase change and the light intensity change; and judging whether the storage tank and/or the pipeline have an intrusion event or not based on the vibration signal and a preset intrusion event library. Therefore, the storage tank and the pipeline can be detected in real time, all-weather real-time monitoring is realized, and security defense management loopholes are made up. In addition, the places where the optical fibers are arranged on the storage tank and the pipeline can be detected, so that the storage tank and the pipeline can be monitored in an all-around and fine mode.
Description
Technical Field
The invention relates to the technical field of storage tank safety detection, in particular to a method, a device and a system for detecting an intrusion event of a storage tank and a pipeline.
Background
With the continuous and rapid development of economy in China, the production scale of petroleum processing and dangerous chemicals is continuously enlarged, the storage capacity of related raw materials, intermediate products and finished products is continuously increased, a storage tank is used as an important storage container structure type, nearly ten thousand storage tanks for liquid chemicals and ten thousand storage tanks for refining industry are provided. Meanwhile, in order to avoid the problem of national security risk caused by energy supply, 9 national oil storage bases such as Zhoushan, Zhenhai, Dalian and Huangdao have been built in China, wherein the minimum specification of the storage tank is 5 ten thousand, the maximum specification of the storage tank is 15 ten thousand, and 10 ten thousand storage tanks become mainstream. Nearly thousands of 10-ten-thousand square storage tanks are newly added in China before 2020 is predicted.
Such large-scale storage area storage tanks and pipelines have a huge challenge in daily operation, maintenance, repair and management. Traditional operation maintenance management only relies on patrolling and examining, and current safety precaution and leakage monitoring technique alarm accuracy still can not satisfy the oil and gas reservoir district safety production needs completely, can not implement all-round, the monitoring that becomes more meticulous to oil and gas reservoir district storage tank and pipeline, in oil and gas reservoir district whole journey within range, also can't realize all-weather real time monitoring, easily forms the defense management leak.
Disclosure of Invention
It is an object of the present invention to provide a method, apparatus and system for detecting tank and pipeline intrusion events that solves or at least partially solves the above mentioned problems.
In order to achieve the above objects, one aspect of the present invention provides a method for detecting an intrusion event of a storage tank and a pipeline, the storage tank and the pipeline having optical fibers arranged on their surfaces, the method comprising: acquiring an optical fiber optical signal after passing through the optical fiber, wherein the optical fiber optical signal comprises Rayleigh scattering light generated based on a Rayleigh scattering effect; controlling the optical fiber optical signal to be coherent with a reference optical signal to form an interference optical signal; processing the interference light signal to obtain phase change and light intensity change corresponding to the interference light signal; determining a vibration signal based on the phase change and the light intensity change; and judging whether the storage tank and/or the pipeline have an intrusion event or not based on the vibration signal and a preset intrusion event library.
Optionally, the method further comprises: in the event of an intrusion event in the tank and/or the pipeline, alarming and/or determining the location of the tank and/or the pipeline at which the intrusion event occurred.
Optionally, the determining a vibration signal based on the phase change and the light intensity change comprises determining the vibration signal based on a partial amplitude method.
Optionally, the fiber optical signal and the reference optical signal have no frequency difference.
Accordingly, another aspect of the present invention provides an apparatus for detecting an intrusion event in a storage tank and a pipeline, the storage tank and the pipeline having optical fibers arranged on a surface thereof, the apparatus comprising: the optical signal acquisition module is used for acquiring an optical fiber optical signal after passing through the optical fiber, wherein the optical fiber optical signal comprises Rayleigh scattering light generated based on a Rayleigh scattering effect; the coherent module is used for controlling the optical fiber optical signal to be coherent with the reference optical signal so as to form an interference optical signal; the signal processing module is used for processing the interference optical signal to obtain phase change and light intensity change corresponding to the interference optical signal; the vibration signal determination module is used for determining a vibration signal based on the phase change and the light intensity change; and the intrusion event determining module is used for judging whether the storage tank and/or the pipeline have intrusion events or not based on the vibration signals and a preset intrusion event library.
Optionally, the apparatus further comprises: the alarm module is used for giving an alarm under the condition that the storage tank and/or the pipeline have an intrusion event; and/or an intrusion event location determination module, configured to determine a location of the tank and/or the pipeline at which an intrusion event occurs, in case of an intrusion event in the tank and/or the pipeline.
Optionally, the vibration signal determination module determines the vibration signal based on the phase change and the light intensity change includes determining the vibration signal based on a partial amplitude method.
Optionally, the fiber optical signal and the reference optical signal have no frequency difference.
In addition, another aspect of the present invention provides a system for detecting tank and pipeline intrusion events, the system comprising: the above-described apparatus; the acousto-optic modulation module is used for modulating the optical fiber optical signal into pulsed light; and/or an amplifier for optically amplifying the fiber optic signal.
Optionally, the system further comprises: and the optical fiber circulator is connected between the light source corresponding to the optical fiber optical signal and the optical fiber.
Optionally, the system further comprises: and the coupler is used for dividing the optical signal emitted by the light source into two paths so as to form the optical fiber optical signal and the reference optical signal.
By the technical scheme, the optical fiber optical signals are acquired in real time, the acquired optical fiber optical signals are analyzed in real time to determine the vibration signals, whether the invasion event exists is determined based on the determined vibration signals, and therefore the storage tank and the pipeline can be detected in real time, all-weather real-time monitoring is achieved, and security defense management loopholes are made up. In addition, the places where the optical fibers are arranged on the storage tank and the pipeline can be detected, so that the storage tank and the pipeline can be monitored in an all-around and fine mode.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a flow chart of a method for detecting tank and pipeline intrusion events according to an embodiment of the present invention;
FIG. 2 is a block diagram of an apparatus for detecting tank and pipeline intrusion events according to a second embodiment of the present invention;
FIG. 3 is a schematic connection diagram of a system for detecting tank and pipeline intrusion events according to a third embodiment of the present invention; and
fig. 4 is a schematic application diagram of a system for detecting tank and pipeline intrusion events according to a third embodiment of the present invention.
Description of the reference numerals
1 optical signal acquisition module 2 coherent module
3 signal processing module 4 vibration signal determining module
5 intrusion event determination module
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
One aspect of embodiments of the present invention provides a method for detecting tank and pipeline intrusion events, wherein optical fibers are disposed on the surface of the tank and pipeline. For example, optical fibers are laid on the roof and outer wall of a storage tank (a storage tank with insulation, a roof and outer wall laid in an insulation layer) and the auxiliary pipelines. In addition, the optical fiber can be arranged on the surface of the storage tank and the pipeline according to the specific situation. For example, the optical fiber is laid from the center of the top of the storage tank to the edge of the top of the storage tank in a concentric ring manner, then laid from the outer wall of the storage tank to the edge of the bottom of the storage tank in a ring parallel winding manner, and laid along the longitudinal direction of the pipeline after being wound for 2 circles, wherein the effect schematic diagram of laying the optical fiber can be seen in fig. 3 or fig. 4. In addition, when arranging the optical fiber on the surface of the tank, a plurality of tanks can be connected at the same time, i.e. the plurality of tanks can be tested at the same time.
Example one
FIG. 1 is a flowchart of a method for detecting tank and pipeline intrusion events according to an embodiment of the present invention. As shown in fig. 1, the method includes the following.
In step S10, a fiber optic signal is acquired after passing through the optical fiber, wherein the fiber optic signal includes rayleigh scattered light generated based on the rayleigh scattering effect. In addition, the light source for generating the optical signal of the optical fiber may be a narrow line width light source, such as a laser light source, or other light sources capable of providing the optical signal passing through the optical fiber, which is not limited herein.
In step S11, the fiber optical signal is controlled to be coherent with the reference optical signal to form an interference optical signal. Optionally, in an embodiment of the present invention, the optical fiber optical signal has no frequency difference from the reference optical signal. For example, the reference optical signal and the optical fiber optical signal may be from the same optical source, for example, light emitted from the optical source is split into two paths after passing through the coupler, one path is the reference optical signal, and the other path is the optical fiber optical signal.
In step S12, the interference light signal is processed to obtain the corresponding phase change and light intensity change of the interference light signal. For example, the phase change and the light intensity change corresponding to the interference light signal can be obtained by performing frequency domain and time domain signal comprehensive analysis processing on the interference light signal, and specifically, the phase change and the light intensity change corresponding to the interference light signal can be obtained by demodulating the interference light signal.
In step S13, a vibration signal is determined based on the phase change and the light intensity change. Wherein the vibration signal represents a waveform of the vibration wave determined based on the phase change and the light intensity change. Optionally, determining the vibration signal based on the phase change and the light intensity change comprises determining the vibration signal based on a partial amplitude method. Specifically, the phase change and the light intensity change are restored according to a partial amplitude method, and the waveform of vibration is restored, so that the vibration signal is determined.
In step S14, it is determined whether there is an intrusion event in the tank and/or the pipeline based on the vibration signal and a preset intrusion event library. The preset intrusion event library comprises waveforms of vibration waves corresponding to different intrusion events, and the waveforms embodied by the determined vibration signals are compared with the waveforms in the preset intrusion event library; if the preset intrusion event library has a waveform matched with the waveform reflected by the determined vibration signal, an intrusion event exists in the storage tank and/or the pipeline, and the intrusion event corresponding to the matched waveform is the intrusion event existing in the storage tank and/or the pipeline; and if the preset intrusion event library does not have a waveform matched with the waveform reflected by the determined vibration signal, the intrusion event does not exist in the storage tank and/or the pipeline.
The optical fiber optical signal is acquired in real time, the acquired optical fiber optical signal is analyzed in real time to determine the vibration signal, and whether the invasion event exists is determined based on the determined vibration signal, so that the storage tank and the pipeline can be detected in real time, all-weather real-time monitoring is realized, and security defense management loopholes are made up. In addition, the places where the optical fibers are arranged on the storage tank and the pipeline can be detected, so that the storage tank and the pipeline can be monitored in an all-around and fine mode.
Optionally, in an embodiment of the present invention, in case of an intrusion event in the tank and/or the pipeline, an alarm is given and/or the location of the tank and/or the pipeline at which the intrusion event occurred is determined. Alternatively, the alarm may be an alarm by emitting light and/or sound. Alternatively, the determination of the position of the intrusion event may be based on a partial amplitude method. Specifically, two optical signal generating devices are arranged at one end of the optical fiber, and the two optical signal generating devices can send two optical signals to enter the optical fiber; or the end is provided with an optical signal generating device, and an optical signal sent by the optical signal generating device is divided into two paths to enter the optical fiber; and meanwhile, two optical signal receivers are arranged at the end, and are used for respectively receiving the two optical signals passing through the optical fiber and recording the time for receiving the two optical signals. Controlling two paths of optical signals to enter the optical fiber simultaneously, recording the time of the two paths of optical signals after passing through the optical fiber, calculating time difference, and calculating the distance based on the transmission speed of the optical signals, wherein the calculated distance is twice of the distance from the position of the invasion event to the other end of the optical fiber, which is not provided with the optical signal generating device, and then determining the distance from the position of the invasion event to the other end of the optical fiber based on the calculated distance, so as to determine the position of the invasion event.
Accordingly, another aspect of the embodiments of the present invention provides an apparatus for detecting tank and pipeline intrusion events. Wherein, the surface of the storage tank and the pipeline is provided with optical fibers.
Example two
Fig. 2 is a block diagram of an apparatus for detecting tank and pipeline intrusion events according to a second embodiment of the present invention. As shown in fig. 2, the apparatus includes an optical signal acquisition module 1, a coherent module 2, a signal processing module 3, a vibration signal determination module 4, and an intrusion event determination module 5. The optical signal acquisition module 1 is configured to acquire an optical fiber optical signal after passing through an optical fiber, where the optical fiber optical signal includes rayleigh scattered light generated based on a rayleigh scattering effect; the coherent module 2 is used for controlling the optical fiber optical signal to be coherent with the reference optical signal so as to form an interference optical signal; the signal processing module 3 is used for processing the interference light signal to obtain phase change and light intensity change corresponding to the interference light signal; the vibration signal determination module 4 is used for determining a vibration signal based on the phase change and the light intensity change; and the intrusion event determining module 5 is used for judging whether an intrusion event exists in the storage tank and/or the pipeline or not based on the vibration signal and a preset intrusion event library.
Optionally, in an embodiment of the present invention, the apparatus further includes: the alarm module is used for giving an alarm under the condition that an intrusion event exists in the storage tank and/or the pipeline; and/or an intrusion event location determination module for determining the location of the tank and/or the pipeline where the intrusion event occurs, in case of the tank and/or the pipeline having the intrusion event.
Optionally, in an embodiment of the present invention, the determining the vibration signal based on the phase change and the light intensity change includes determining the vibration signal based on a partial amplitude method.
Optionally, in an embodiment of the present invention, the optical fiber optical signal has no frequency difference from the reference optical signal.
The specific working principle and benefits of the apparatus for detecting storage tank and pipeline intrusion events provided by the embodiment of the present invention are similar to those of the method for detecting storage tank and pipeline intrusion events provided by the embodiment of the present invention, and will not be described herein again.
In addition, another aspect of the embodiments of the present invention further provides a system for detecting an intrusion event in a storage tank and a pipeline, the system including the apparatus in the above embodiments; the acousto-optic modulation module is used for modulating the optical fiber optical signal into pulsed light; and/or an amplifier for optically amplifying the fiber optic signal.
Optionally, in an embodiment of the present invention, the system further includes: and the optical fiber circulator is connected between a light source corresponding to the optical signal of the optical fiber and the optical fiber.
Optionally, in an embodiment of the present invention, the system further includes: and the coupler is used for dividing the optical signal emitted by the light source into two paths so as to form an optical fiber optical signal and a reference optical signal.
EXAMPLE III
The system for detecting tank and pipeline intrusion events provided in the embodiment of the present invention is explained with reference to fig. 3 and 4, wherein the explanation can also be used to explain the method and apparatus for detecting tank and pipeline intrusion events in the above embodiment.
The invention belongs to the technical field of storage tank safety detection, relates to safety detection and evaluation of storage tank and pipeline invasion events, and provides a system for detecting storage tank and pipeline invasion events, in particular to a system for detecting whether the storage tank and pipeline invasion events occur or not by applying an optical technology to monitor the operation of the storage tank and pipeline, for example, the system can detect the invasion event conditions of the tank wall and the tank top of the storage tank. According to the system for detecting the storage tank and pipeline invasion events, provided by the embodiment of the invention, whether the storage tank and the pipeline have the invasion events or not is determined by detecting the deformation of the storage tank and the pipeline. When the intrusion events of the storage tank and the pipeline are detected, the optical fibers are laid on the surfaces of the storage tank and the pipeline, and the optical fibers are laid on the top and the outer wall of the storage tank (the storage tank with the heat preservation layer, the top and the outer wall of the storage tank laid in the heat preservation layer) and the auxiliary pipeline. The system host is connected with an indoor detection system host through a signal transmission optical fiber, the system host comprises a laser, a coupler, an acousto-optic modulator, a driver, a semiconductor optical amplifier, an optical fiber circulator, a photoelectric detector and a data acquisition card, and the system host is connected with an upper computer. And the upper computer analyzes and processes the data to obtain the vibration parameters of the storage tank, synthesizes the production process parameters of the storage tank and judges the safety condition of the storage tank. And (4) monitoring for a long time all day, and alarming in time once an invasion event occurs.
The system for detecting the storage tank and pipeline intrusion event provided by the embodiment of the invention solves the following technical problems in the prior art: (1) the real-time monitoring of local vibration of the storage tank and the pipeline cannot be realized, and the real-time alarm of an invasion event cannot be realized; (2) the detection efficiency is low, and the detection can only be carried out one by one or point by point, and the large-range monitoring cannot be realized.
In the embodiment of the present invention, the optical fiber may be laid according to specific situations, for example, starting from the center of the top of the storage tank, the optical fiber is laid in a concentric ring manner to the edge of the top of the storage tank, then the optical fiber is laid in a ring parallel winding manner from the outer wall of the storage tank to the edge of the bottom of the storage tank, the optical fiber is connected to the joint of the storage tank and the material inlet and outlet pipeline, the optical fiber is laid longitudinally along the pipeline after being wound for 2 turns, the signal transmission optical fiber is connected, and the system host is connected to the indoor detection system host through the signal transmission optical fiber, wherein the system host includes a laser, a coupler, an acousto-optic modulator, a driver, an optical semiconductor amplifier.
In an embodiment of the present invention, tank and pipeline intrusion events are detected based on vibration parameters, as described in detail below.
When the device works, the narrow-line-width light source provides light signals when vibration parameters are monitored; the first coupler divides an optical signal at the input end into two paths of output optical signals, the first path of output optical signal enters the first acousto-optic modulation module, and the second path of output optical signal enters the second acousto-optic modulation module; the first acousto-optic modulation module is driven by a first driver and modulates the narrow-linewidth light source signal into pulsed light; the semiconductor amplifier optically amplifies the light source signal; the circulator receives the amplified periodic pulse light from the port 1 and transmits the periodic pulse light to the optical fiber, so that the optical fiber generates Rayleigh scattering light based on a Rayleigh scattering effect; rayleigh scattered light enters a port 2 of the circulator and is sent out to a port 3, and enters a first path of input of the second coupler; the second acousto-optic modulation module is driven by a second driver and modulates the narrow-linewidth light source signal into a reference light signal to be output, and the reference light signal enters a second path of input of a second coupler; two paths of input of the second coupler enter in sequence to be coherent to form interference light; two beams of signal light are output through the second coupler and enter the photoelectric detector to be converted into electric signals; the data acquisition card performs analog-to-digital conversion and sampling on the electric signals, and the obtained data is displayed, processed and stored at the upper computer terminal.
The laser periodically sends out optical signals, the upper computer signal processing and analyzing module completes comprehensive analysis and processing of frequency domain and time domain information, the coherent Rayleigh signals are demodulated, phase change and light intensity change corresponding to the coherent Rayleigh signals are obtained, and the phase change and the light intensity change are restored and the vibration source type is identified according to a partial amplitude method. When an intrusion event occurs to a storage tank and/or a pipeline in a reservoir area, vibration is caused, phase change and light intensity change are restored according to a partial amplitude method, a vibration waveform is restored, and the restored vibration waveform indicates the type of a vibration source. Comparing the restored waveform of the vibration with a waveform in a preset intrusion event library, wherein if the matched waveform exists, an intrusion event exists; if no matching waveform exists, no intrusion event exists. And under the condition that an intrusion event exists, determining the position of a vibration source according to a partial amplitude method and triggering an alarm. For determining the location of the vibration source according to the partial amplitude method, see how to determine the occurrence location of the intrusion event in the above embodiments. In addition, an intrusion event is determined according to the restored waveform, and the intrusion event corresponding to the waveform matched with the restored waveform in the preset intrusion event library is the occurred intrusion event. For example, the intrusion event may be an accidental damage of a storage tank and a pipeline in an oil and gas reservoir area by a third-party operation, an illegal intrusion damage and diversion behavior of an artificial and deliberate operation on the oil and gas reservoir area and the pipeline, and a storage tank and the pipeline are broken due to an event such as a damage of a natural disaster such as an earthquake, a debris flow, a flood and the like on the pipeline.
In the scheme, the sensing optical fibers are arranged on the surfaces of the storage tanks and the pipelines, and the storage tanks can be connected simultaneously for online monitoring, so that the detection efficiency and the monitoring range are improved.
In the scheme, the upper computer reads the technological parameters of the production control system, including temperature, pressure and other parameters, and performs comprehensive analysis and evaluation on the safe running state of the storage tank. Monitoring for a long time and alarming in time.
The system for detecting the storage tank and pipeline invasion event provided by the embodiment of the invention has the following beneficial effects: 1) the sensing optical fiber is a flexible sensor, is intrinsically safe, can be tightly attached to the surfaces of the storage tank and the pipeline, and is suitable for the storage tank and the pipeline in a reservoir area for storing flammable and explosive media; 2) the method is also suitable for storage tanks with heat insulation and buried pipelines, and the sensing optical fiber can be arranged on the surface of the storage tank and then covered with the heat insulation layer; the sensing optical fiber can be arranged on the surface of the pipeline and then covered with soil, and can also be directly connected with the optical fiber embedded during pipeline laying for monitoring; 3) the monitoring range is wide, the detection efficiency is high, the operation conditions of the storage tank and the pipeline are monitored in real time, and the intrusion event is alarmed in real time; 4) the method adopts a distributed optical monitoring method to detect the intrusion events of the storage tank and the pipeline in the reservoir area, and obtains the intrusion events of the operation of the storage tank and the pipeline by the change condition of the vibration parameters to obtain the characteristics and the position of the vibration source; 5) the temperature and the strain of the storage tank can be monitored simultaneously, the deformation condition of the storage tank is synchronously reflected through two parameters of the temperature and the strain, and the reliability is higher; 6) interference light demodulation errors generated by light source fluctuation can be inhibited by adopting the same light source; 7) the detection capability of the micro vibration can be improved by adopting an interference method; 8) the system can monitor large earthquake motion and landform change caused by earthquake, flood and landslide, monitor long-distance pipelines, carry out monitoring and early warning for 24 hours in an oil and gas reservoir area and the whole range of pipelines, accurately early warn various destructive behaviors, provide enough time for relevant departments to take precautionary measures, is safe and reliable, is distributed for all weather, has less maintenance amount and low cost, can be seamlessly integrated with the existing monitoring system, and can record and review destructive events in real time; 9) the event is accurately positioned, and the concealment and the environmental adaptability are strong; 10) the early warning ability of the safety in production of guarantee oil gas reservoir district and pipeline and preventing external force destruction promotes the administrative benefits that reservoir district perimeter security protection and pipeline patrol and examine the maintenance, and protection reservoir district and pipeline do not receive external force to destroy, realizes that the efficiency of reservoir district security protection and pipeline maintenance promotes, reduces economic loss, practices thrift personnel, maintenance cost to obtain indirect economic benefits, and provide the powerful guarantee for city life and social production.
For monitoring the temperature and the strain of the storage tank, the deformation condition of the storage tank is synchronously reflected by two parameters of the temperature and the strain, which can be seen in the following. After determining whether there is an intrusion event in the tank and/or the pipeline based on the vibration signal, the degree of the intrusion event may be judged according to the temperature and the strain.
Specifically, firstly, an invasion event is judged according to vibration, and relates to accidental damage of third-party operation to an oil and gas reservoir area and a pipeline, damage of the third party to accessory facilities such as the oil and gas reservoir area and the pipeline, illegal invasion damage and diversion behaviors of the third party to the oil and gas reservoir area and the pipeline artificially, damage of natural disasters such as earthquake, debris flow, flood and the like to the pipeline, building defects, material aging and the like, and pipeline air leakage or breakage and the like are caused. And judging the occurrence of the intrusion event by a vibration source positioning and identifying technology, and judging the damage degree of the intrusion event by the aid of temperature and strain parameters. When the detected temperature, strain parameter and process parameter are expressed as follows at the starting vibration point position, the invasion event is destructive invasion, namely the leakage of the medium occurs: the pressure of the production parameter of the process medium is reduced relative to the value of the operation standard pressure, the temperature parameter is changed relative to the preset standard value of the operation production temperature parameter, the temperature is equal to or close to the temperature of the production parameter of the process medium, and the strain parameter is changed relative to the preset standard value of the strain parameter; or the pressure of the production parameter of the process medium does not change greatly (is equal to or close to the standard pressure value) relative to the standard pressure value, the temperature parameter changes relative to the preset standard value of the temperature parameter, the temperature is equal to or close to the temperature of the production parameter of the process medium, and the strain parameter changes relative to the preset standard value of the strain parameter.
In addition, another aspect of the embodiments of the present invention also provides a machine-readable storage medium, which stores instructions for causing a machine to execute the method described in the above embodiments.
In addition, another aspect of the embodiments of the present invention further provides a processor, configured to execute a program, where the program is executed to perform the method described in the foregoing embodiments.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (11)
1. A method for detecting tank and pipe intrusion events, wherein optical fibers are disposed on the surface of the tank and the pipe, the method comprising:
acquiring an optical fiber optical signal after passing through the optical fiber, wherein the optical fiber optical signal comprises Rayleigh scattering light generated based on a Rayleigh scattering effect;
controlling the optical fiber optical signal to be coherent with a reference optical signal to form an interference optical signal;
processing the interference light signal to obtain phase change and light intensity change corresponding to the interference light signal;
determining a vibration signal based on the phase change and the light intensity change; and
and judging whether the storage tank and/or the pipeline have an intrusion event or not based on the vibration signal and a preset intrusion event library.
2. The method of claim 1, further comprising:
in the event of an intrusion event in the tank and/or the pipeline, alarming and/or determining the location of the tank and/or the pipeline at which the intrusion event occurred.
3. The method of claim 1, wherein determining the vibration signal based on the phase change and the light intensity change comprises determining the vibration signal based on a partial amplitude method.
4. The method of any of claims 1-3, wherein the fiber optical signal is frequency-independent of the reference optical signal.
5. An apparatus for detecting tank and pipeline intrusion events, wherein optical fibers are disposed on the surface of the tank and the pipeline, the apparatus comprising:
the optical signal acquisition module is used for acquiring an optical fiber optical signal after passing through the optical fiber, wherein the optical fiber optical signal comprises Rayleigh scattering light generated based on a Rayleigh scattering effect;
the coherent module is used for controlling the optical fiber optical signal to be coherent with the reference optical signal so as to form an interference optical signal;
the signal processing module is used for processing the interference optical signal to obtain phase change and light intensity change corresponding to the interference optical signal;
the vibration signal determination module is used for determining a vibration signal based on the phase change and the light intensity change; and
and the intrusion event determining module is used for judging whether the storage tank and/or the pipeline have intrusion events or not based on the vibration signals and a preset intrusion event library.
6. The apparatus of claim 5, further comprising:
the alarm module is used for giving an alarm under the condition that the storage tank and/or the pipeline have an intrusion event; and/or
And the intrusion event position determining module is used for determining the position of the storage tank and/or the pipeline where the intrusion event occurs under the condition that the storage tank and/or the pipeline have the intrusion event.
7. The apparatus of claim 5, wherein the vibration signal determination module determines the vibration signal based on the phase change and the light intensity change comprises determining the vibration signal based on a partial amplitude method.
8. The apparatus of any of claims 5-7, wherein the fiber optical signal is frequency-independent of the reference optical signal.
9. A system for detecting tank and pipeline intrusion events, the system comprising:
the device of any one of claims 5-8; and
the acousto-optic modulation module is used for modulating the optical fiber optical signal into pulsed light; and/or
And the amplifier is used for carrying out optical amplification on the optical fiber optical signal.
10. The system of claim 9, further comprising:
and the optical fiber circulator is connected between the light source corresponding to the optical fiber optical signal and the optical fiber.
11. The system of claim 9, further comprising:
and the coupler is used for dividing the optical signal emitted by the light source into two paths so as to form the optical fiber optical signal and the reference optical signal.
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