CN216816445U - Laser telemetering monitor for greenhouse gas in open light path of oil-gas station - Google Patents
Laser telemetering monitor for greenhouse gas in open light path of oil-gas station Download PDFInfo
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- CN216816445U CN216816445U CN202220054428.4U CN202220054428U CN216816445U CN 216816445 U CN216816445 U CN 216816445U CN 202220054428 U CN202220054428 U CN 202220054428U CN 216816445 U CN216816445 U CN 216816445U
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Abstract
The utility model provides an open light path greenhouse gas laser telemetering measurement monitoring devices in oil gas station, relate to check out test set technical field, it includes the circuit, laser emission receiving arrangement, laser control and signal processing transmission device, the camera, the concave surface speculum, a pedestal, the connecting pipe, vertical rotation structure, connection structure and horizontal rotation structure, install the connecting pipe on the base, the connecting pipe respectively with laser emission receiving arrangement, concave surface speculum and laser control and signal processing transmission device are connected, pass through the circuit connection between laser emission receiving arrangement and the laser control and the signal processing transmission device. The open light path greenhouse gas laser telemetering and monitoring device for the oil and gas station realizes mirror reflection by using diffuse reflection of a non-cooperative target and a concave mirror, realizes 24-hour monitoring of greenhouse gas concentration, and can find a corresponding high-concentration position and determine the concentration when the greenhouse gas concentration at a certain position is too high.
Description
The technical field is as follows:
the utility model relates to the technical field of detection equipment, in particular to a laser telemetering and monitoring device for greenhouse gas in an open light path of an oil-gas station.
The background art comprises the following steps:
global warming is one of the most complex challenges facing mankind in the twenty-first century, as the most significant environmental problem facing mankind to date. The emission of greenhouse gases mainly containing carbon due to human activities is a major cause of global warming. Current problems associated with carbon emissions are causing concern for countries around the world.
The oil gas station is used as the core function of natural gas and petroleum storage and transmission, and is also designed to be the main source of greenhouse gas. Methane, the major component of natural gas, is the second largest greenhouse gas next to carbon dioxide, and the resulting greenhouse effect is not insignificant. Therefore, the method has great practical significance and effect on the detection of the concentration of the carbon dioxide and methane gas in the natural gas station.
The utility model content is as follows:
the utility model aims to overcome the defects of the prior art and provides the greenhouse gas laser telemetering and monitoring device with the open optical path for the oil and gas station. The method effectively improves the efficiency and the sensitivity of gas detection, and realizes the concentration analysis and the display of the main greenhouse gases of carbon dioxide and methane in real time.
In order to solve the problems existing in the background technology, the utility model adopts the following technical scheme: including circuit, laser emission receiving arrangement, laser control and signal processing transmission device, camera, concave surface speculum, base, connecting pipe, vertical rotation structure, connection structure and horizontal rotation structure, the connecting pipe includes vertical connecting line and right angle connecting line, and right angle connecting line buries underground in the base, is equipped with three vertical connecting line on the base perpendicularly, and three vertical connecting line is connected with right angle connecting line respectively, installs laser emission receiving arrangement, concave surface speculum and laser control and signal processing transmission device respectively on the three vertical connecting line, passes through circuit connection between laser emission receiving arrangement and the laser control and the signal processing transmission device.
The circuit comprises a laser fiber circuit, an image acquisition control circuit and a data acquisition circuit.
The laser transmitting and receiving device comprises an optical fiber collimator and a photoelectric detector which are connected with each other.
The laser control and signal processing transmission device comprises a signal processing module, a signal analysis module, a laser control module and a communication module, wherein the signal processing module is connected with the signal analysis module through a wire, the signal analysis module is connected with the laser control module through a wire, and the laser control module is connected with the communication module through a wire.
The optical fiber collimator is connected with the laser control module through the laser optical fiber circuit and the image acquisition control circuit; the photoelectric detector is connected with the signal processing module through the data acquisition circuit.
The bottom end of the right-angle connecting pipeline is provided with a vertical rotating structure, and the vertical rotating structure is connected with the horizontal rotating structure through a connecting structure.
And a display module is arranged below the base.
The communication module is connected with the display module.
The utility model has the beneficial effects that: the method aims to realize 24-hour monitoring of the concentration of the greenhouse gas by using diffuse reflection of a non-cooperative target and realizing mirror reflection through a concave mirror, and meanwhile, when the concentration of the greenhouse gas at a certain position is too high, the corresponding high-concentration position can be found, and the concentration can be determined.
Description of the drawings:
FIG. 1 is a general principle framework of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a diagram of the laser distribution of the gas space of the open space temperature sensing chamber of the present invention;
FIG. 4 is a diagram of a concave mirror and its optical path according to the present invention.
Description of reference numerals: 1.1 laser fiber circuit, 1.2 image acquisition control circuit, 1.3 data acquisition circuit, 2 laser emission receiving device, 2.1 fiber collimator, 2.2 photodetector, 3 laser control and signal processing transmission device, 3.1 signal processing module, 3.2 signal analysis module, 3.3 laser control module, 3.4 communication module, 4 camera, 5 concave reflector, 6 display module, 7 base, 8.1 longitudinal connecting pipeline, 8.2 right-angle connecting pipeline, 9 vertical rotation structure, 10 connecting structure, 11 horizontal rotation structure
The specific implementation mode is as follows:
referring to the drawings, the present invention specifically adopts the following embodiments: including circuit, laser emission receiving arrangement 2, laser control and signal processing transmission device 3, camera 4, concave surface reflector 5, base 7, connecting pipe, vertical rotation structure 9, connection structure 10 and horizontal rotation structure 11, the connecting pipe includes vertical connecting line 8.1 and right angle connecting line 8.2, and right angle connecting line 8.2 buries underground in base 7, is equipped with three vertical connecting line 8.1 on the base 7 perpendicularly, and three vertical connecting line 8.1 is connected with right angle connecting line 8.2 respectively, installs laser emission receiving arrangement on the three vertical connecting line 8.1 respectively, concave surface reflector 5 and laser control and signal processing transmission device, passes through circuit connection between laser emission receiving arrangement 2 and the laser control and signal processing transmission device 3. The circuit comprises a laser fiber circuit 1.1, an image acquisition control circuit 1.2 and a data acquisition circuit 1.3. The laser transmitting and receiving device 2 comprises an optical fiber collimator 2.1 and a photoelectric detector 2.2, wherein the optical fiber collimator 2.1 and the photoelectric detector 2.2 are connected with each other. Laser control and signal processing transmission device 3 include signal processing module 3.1, signal analysis module 3.2, laser control module 3.3 and communication module 3.4, signal processing module 3.1 is connected with signal analysis module 3.2 through the wire, signal analysis module 3.2 is connected with laser control module 3.3 through the wire, laser control module 3.3 is connected with communication module 3.4 through the wire. The optical fiber collimator 2.1 is connected with the laser control module 3.3 through the laser optical fiber circuit 1.1 and the image acquisition control circuit 1.2; the photodetector 2.2 is connected to the signal processing module 3.1 via a data acquisition circuit 1.3. The bottom end of the right-angle connecting pipeline 8.2 is provided with a vertical rotating structure 9, and the vertical rotating structure 9 is connected with a horizontal rotating structure 11 through a connecting structure 10. And a display module 6 is arranged below the base 7. The communication module 3.4 is connected with the display module 6.
The laser control and signal processing transmission device 3 is positioned behind the concave reflector 5. The signal processing module 3.1 is mainly a lock-in amplifier, which amplifies the harmonic signals. The laser control module 3.3 comprises a power supply and two laser transmitters. Communication module 3.4 wireless communication device. The emission wavelengths of the two laser emitters are respectively 1653.1nm and 2004 nm. The laser emitted by the two is coupled by a coupler, controlled by a photoelectric switch and directly connected with a collimator by an optical fiber.
The concave mirror 5 is used for the size of the concave mirror, and the concave mirror has a length of 10cm, an opening radius of 40cm, and a focal point of 10 cm.
When it rains, rainwater may adhere to the mirror surface to reduce the reflection capability of the mirror surface, thereby reducing the detection sensitivity. The best solution to this problem is to plate a nano-film on the mirror surface by HT-CVD (high temperature chemical vapor deposition). The waterproof film has strong waterproof performance, acid and alkali corrosion resistance and strong adhesive force.
Sometimes, the intensity of laser light scattered by the surface of the ground or the oil and gas pipeline is low due to various factors, and in addition, the reflection intensity is further reduced due to the transmission factor of the concave mirror, so that the concave mirror needs to be coated with a reflection film to increase the mirror reflectivity. The optional reflection increasing film is silver or aluminum, and the aluminum is suitable to be used as a film plating material in consideration of cost performance and other factors.
Due to the geographical position factors of the oil and gas field station, the oil and gas field station frequently encounters the conditions of strong wind weather and flying dust. Dust adheres to the mirror surface, which also causes a decrease in the mirror reflectivity and a decrease in the received light intensity, resulting in a decrease in the detection sensitivity. And the influence of dust on laser reflection is eliminated by adopting a nitrogen purging mode.
The display module 6 may display real-time data. Including the name of the gas being measured, real-time data of the measured gas, and the temperature of the day.
The staff operation control console sends out control signal, and after wireless transmission equipment 3.4 received the signal, laser control module 3.3 control laser instrument began to emit laser. The two lasers are coupled through the coupler, the photoelectric switch controls the two lasers to select the needed wavelength laser, and the laser is transmitted to the light collimator 2.1 through the optical fiber circuit 1.1 to be emitted. The image control acquisition circuit 1.2 divides the camera 4 into operations. The photoelectric switch can be selective to two beams of light, emits laser which can be absorbed by carbon dioxide or methane, and emits the laser to a non-cooperative target surface through the optical fiber collimator 2.1. The laser that the diffuse reflection returns is received by concave reflector 5 and is gathered and get into photoelectric detector 2.2, photoelectric detector 2.2 changes the light signal into the signal of telecommunication, pass back to signal processing module 3.1 in proper order through data acquisition circuit 1.3, carry out lock-in amplification and carrier wave extraction to the signal of telecommunication, get into the singlechip circuit through AD sampling circuit in signal analysis circuit 3.2, singlechip circuit calculates the gas concentration that surveys, upload the control cabinet and show through control module 3.3 with the concentration information of image information and relevant position through wireless transmission equipment 3.4 at last.
Greenhouse gases are mainly carbon dioxide and methane and therefore are monitored mainly for their concentrations. In the absorption line of the carbon dioxide in the near infrared spectrum, the optimal wavelength of an absorption peak is in a wave band of 2004nm, and the optimal wavelength of an absorption peak of the methane in the near infrared absorption spectrum is 1653.4. In order to make the final detected carbon dioxide and methane concentration more accurate, the wavelength of the transmitted laser light needs to be transmitted by the optical fiber circuit 1.1 and is always stabilized at the corresponding gas measurement wavelength.
The laser in the laser control module 3.3 uses a tunable semiconductor laser, and the tunable semiconductor laser has the advantages of high analysis speed, non-contact type, short acquisition time and high accuracy.
The laser control module 3.3 can be connected with an alarm. When the concentration of methane or carbon dioxide is too high, the photoelectric detector 2.3 senses the change of the laser intensity, converts the optical signal into an electric signal and enables the alarm to give an alarm.
The camera 4 can upload the image information of monitoring point in real time, annotates the measuring point with the cross target, and accessible image recognition technology analysis gas concentration roughly exceeds the standard value.
The concave reflecting mirror 5 is provided with a gas purging device which is positioned right above the concave reflecting mirror, so that all-around nitrogen purging can be realized, and dust affecting mirror reflection can be blown.
The optical signal obtained by the photoelectric detector 2.2 is converted into an electric signal after photoelectric conversion, the electric signal is input into a pre-amplifying circuit, the amplified signal is demodulated by a phase-locked amplifier circuit to obtain a WMS-2f signal, and finally the WMS-2f signal is obtained according to the principle that the signal is amplified by the pre-amplifying circuit
The measured gas concentration, photodiode responsivity K and gain G2 of the digital phase-locked amplifier,
is the average light intensity, G1Is the amplification gain.
The detection device can be placed on a vertical rod in an open space and is bound on the vertical rod through a horizontal rotation and fixing device, so that the all-dimensional monitoring of the greenhouse gas in the open space of the oil and gas station is realized.
The utility model can measure the concentration of carbon dioxide or methane in an open space to obtain the corresponding concentration value of greenhouse gas, and can also utilize the singlechip to control and emit laser wavelength matched with the optimal absorption peak of the carbon dioxide or methane to realize the conversion monitoring of the carbon dioxide or methane if the gas exceeds the normal value to warn people. As shown in fig. 3, a monitoring device is placed on the vertical rod in the open space. If the gas concentration is higher at the position c, after scanning, the system can give an alarm to indicate that the concentration is too high, then the laser can scan the three areas a, b and c, so as to determine the area with the gas concentration exceeding the standard value, and the area is transmitted to the console through the wireless communication device.
The console controls the transmission platform to rotate, so that the laser transmitter transmits laser light sources at different positions, the laser detector acquires reflected laser and image information of a detection position, the gas concentration to the area to be detected after photoelectric conversion and signal processing is carried out, and an average value is obtained after the gas concentration reaches the concentration of the gas to be detected after multiple detections, so that the error is reduced, and the final concentration value of the gas is reached.
The wireless display module 6 is directly connected with the communication module through a display circuit, and the display module is arranged below the whole base 7, so that people can be more conveniently helped to see the concentration value of the methane or the carbon dioxide monitored in real time.
The process comprises
The method comprises the following steps: the singlechip controls the laser transmitting and receiving device 2 to transmit the wavelength of the absorption peak corresponding to the carbon dioxide or the methane;
step two: the modulated laser is emitted out through an optical fiber collimator 2.1;
step three: the laser passes through the gas area to be measured and is reflected by the non-cooperative target, and the reflected laser is converged on the photoelectric detector 2.2 through the concave reflector 5.
Step four: the photoelectric detector 2.2 converts the optical signal into an electric signal, and the electric signal is demodulated, amplified and filtered, then is processed by a microprocessor to obtain the concentration of the gas to be detected, and is transmitted to an upper computer.
The device is self-adjustable, and can be used for self-adjusting the monitoring of the concentration of carbon dioxide or methane gas.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
In conclusion, the open light path greenhouse gas laser telemetering and monitoring device for the oil and gas station realizes the mirror reflection by using the diffuse reflection of the non-cooperative target and the concave mirror, realizes the 24-hour monitoring of the concentration of the greenhouse gas, and can find the corresponding high-concentration position and determine the concentration when the concentration of the greenhouse gas at a certain position is too high.
Claims (8)
1. The utility model provides an open light path greenhouse gas laser telemetering measurement monitoring devices of oil gas station which characterized in that: comprises a circuit, a laser transmitting and receiving device (2), a laser control and signal processing and transmitting device (3), a camera (4), a concave reflector (5), a base (7), a connecting pipe, a vertical rotating structure (9), a connecting structure (10) and a horizontal rotating structure (11), the connecting pipe comprises a longitudinal connecting pipeline (8.1) and a right-angle connecting pipeline (8.2), the right-angle connecting pipeline (8.2) is buried in a base (7) in an underground mode, three longitudinal connecting pipelines (8.1) are perpendicularly arranged on the base (7), the three longitudinal connecting pipelines (8.1) are respectively connected with the right-angle connecting pipeline (8.2), a laser transmitting and receiving device, a concave reflecting mirror (5) and a laser control and signal processing and transmitting device are respectively installed on the three longitudinal connecting pipelines (8.1), and the laser transmitting and receiving device (2) is connected with the laser control and signal processing and transmitting device (3) through a circuit.
2. The open optical path greenhouse gas laser telemetering and monitoring device of an oil and gas station according to claim 1, characterized in that: the circuit comprises a laser fiber circuit (1.1), an image acquisition control circuit (1.2) and a data acquisition circuit (1.3).
3. The open optical path greenhouse gas laser telemetering and monitoring device of an oil and gas station according to claim 1, characterized in that: the laser transmitting and receiving device (2) comprises an optical fiber collimator (2.1) and a photoelectric detector (2.2), wherein the optical fiber collimator (2.1) and the photoelectric detector (2.2) are connected with each other.
4. The open optical path greenhouse gas laser telemetering and monitoring device of an oil and gas station according to claim 1, characterized in that: laser control and signal processing transmission device (3) include signal processing module (3.1), signal analysis module (3.2), laser control module (3.3) and communication module (3.4), signal processing module (3.1) is connected with signal analysis module (3.2) through the wire, signal analysis module (3.2) are connected with laser control module (3.3) through the wire, laser control module (3.3) are connected with communication module (3.4) through the wire.
5. The oil and gas station open optical path greenhouse gas laser telemetry monitoring device of claim 1, 2, 3 or 4, characterized in that: the optical fiber collimator (2.1) is connected with the laser control module (3.3) through the laser optical fiber circuit (1.1) and the image acquisition control circuit (1.2); the photoelectric detector (2.2) is connected with the signal processing module (3.1) through a data acquisition circuit (1.3).
6. The open optical path greenhouse gas laser telemetering and monitoring device of an oil and gas station according to claim 1, characterized in that: the bottom end of the right-angle connecting pipeline (8.2) is provided with a vertical rotating structure (9), and the vertical rotating structure (9) is connected with a horizontal rotating structure (11) through a connecting structure (10).
7. The open optical path greenhouse gas laser telemetering and monitoring device of an oil and gas station according to claim 1, characterized in that: and a display module (6) is arranged below the base (7).
8. The open optical path greenhouse gas laser telemetering and monitoring device of an oil and gas station according to claim 4 or 7, characterized in that: the communication module (3.4) is connected with the display module (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220054428.4U CN216816445U (en) | 2022-01-10 | 2022-01-10 | Laser telemetering monitor for greenhouse gas in open light path of oil-gas station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220054428.4U CN216816445U (en) | 2022-01-10 | 2022-01-10 | Laser telemetering monitor for greenhouse gas in open light path of oil-gas station |
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| CN216816445U true CN216816445U (en) | 2022-06-24 |
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| CN202220054428.4U Active CN216816445U (en) | 2022-01-10 | 2022-01-10 | Laser telemetering monitor for greenhouse gas in open light path of oil-gas station |
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