CN115791683A - Full-automatic high-precision oil-gas-water three-phase metering system based on infrared detection - Google Patents

Full-automatic high-precision oil-gas-water three-phase metering system based on infrared detection Download PDF

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CN115791683A
CN115791683A CN202211705848.5A CN202211705848A CN115791683A CN 115791683 A CN115791683 A CN 115791683A CN 202211705848 A CN202211705848 A CN 202211705848A CN 115791683 A CN115791683 A CN 115791683A
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test tube
screw rod
gas
motor
oil
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CN115791683B (en
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胡义升
史晨辉
蒲磊
庞康
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Southwest Petroleum University
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Southwest Petroleum University
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Abstract

The invention relates to a full-automatic high-precision oil-gas-water three-phase metering system based on infrared detection. The main structure comprises a flat-bottom test tube, a clamping device, a transmission device, a separator, an infrared transmitting and receiving device, a gas storage container and the like; a light source is arranged below the test tube, a light receiving and processing device is arranged above the test tube, and the information is transmitted to a control center to calculate the height of the liquid level in the test tube; the flat-bottom test tube can be moved into the separator and the test tube rack through the clamping device and the transmission device; a motor is arranged below the separator, and the motor rotates to separate oil from water; the test tube rack is arranged in an open box body, and infrared transmitting and receiving devices are arranged on two sides of the test tube rack to obtain oil-water volume data; gas enters a gas storage container from a pipeline on the test tube through the pressure sensor, the pressure in the container is monitored constantly and fed back to a control center, and the container is connected with a switch and can release the gas in the container; the invention can simultaneously measure the volume of oil, gas and water, has full-automatic process, does not need manual control, has smaller infrared analysis liquid level height and oil-water interface error compared with manual reading, and has more obvious oil-water interface and more accurate measurement through separation action.

Description

Full-automatic high-precision oil-gas-water three-phase metering system based on infrared detection
Technical Field
The invention belongs to the field of indoor displacement experiments, and relates to a full-automatic oil-gas-water metering device.
Background
When an indoor displacement experiment is carried out, most metering devices need to manually read displaced oil, gas or water, but the manual reading error is large, the obtained data is inaccurate, the devices need to be kept on site all the time, the time and the labor are consumed, the existing metering devices are various, but most of the metering devices cannot complete oil, gas and water three-phase metering and cannot automatically read and record, for example, the published patent CN101832804A is an oil and water metering instrument, the metering instrument can only calculate the quality of oil and water, and cannot collect gas volume information; the oil-water metering device disclosed in the patent publication CN101986107A avoids errors caused by oil-water mixing, but errors are easily caused because readings need to be read manually; the patent CN109752507A is an oil-gas-water metering device, the oil-water interface in the collector of the metering device needs to be kept fixed, so the liquid level height needs to be observed manually at any time, and in addition, the boundary of oil-water stratification is not obvious, which easily causes errors in data reading and makes the obtained data inaccurate. The oil-water or oil-gas-water metering devices briefly described above all need manual operation and the metering mode is mainly scale reading or weighing method, which affects the metering accuracy and wastes human resources. Aiming at the existing problems, a full-automatic oil-gas-water metering device needs to be designed to complete the experimental process of full-automatic fluid collection, automatic metering and recording.
Disclosure of Invention
The invention aims to solve the problems of time consumption, labor consumption and inaccuracy caused by the fact that the volume of oil, gas and water needs to be manually recorded when a displacement experiment is carried out at present, and designs and invents a full-automatic high-precision oil, gas and water three-phase metering system based on infrared detection. The device is simple to use, and the measurement is accurate, can solve the partial problem that the manpower record appears.
In order to achieve the technical purpose, the invention adopts the following technical scheme.
A full-automatic high-precision oil-gas-water three-phase metering system based on infrared detection mainly comprises a motor, a gear, a screw rod, a rack, a separator, a dryer, a one-way valve, a compressor, a gas storage container, a control panel and the like. Fluid that the displacement was gone out flows out to flat test tube in through the pipeline from the backpressure valve, and this test tube is different with ordinary test tube, and it is whole cylindrically, and the bottom is difficult for rocking, reads the fluid volume more accurate. The test tube stopper is provided with a light receiving and processing device, a light source is arranged below the test tube, the light receiving and processing device receives light rays passing through liquid, changes of the intensity and the receiving time of the light rays are converted into electric signals, the information is transmitted to a control center, the height of the liquid level is analyzed, and the control center operates a clamping device to take down the test tube. The flat-bottom test tube moves through a transmission device, the transmission device mainly comprises a motor, a screw rod, a gear and other parts, a guide rod is connected with the screw rod through a cross beam, a transmission device with internal threads is arranged on the screw rod, the motor below the screw rod rotates to drive a bevel gear to rotate, the bevel gear is meshed with another bevel gear to enable the gear to be changed into horizontal rotation to drive a bearing rod to rotate, and the gear on the bearing rod is meshed with the screw rod to drive the screw rod to rotate. Along with the rotation of the screw rod, the driver can drive the slider on the guide rod to move up and down. The motor on the slider drives the rotating head, so that the test tube can realize multi-dimensional operation displacement. The motor is installed on the left of the rotating head, the motor can drive the telescopic rod to rotate, the telescopic rod is composed of an external thread screw rod and an internal thread screw rod, when the motor rotates, the external thread screw rod is driven by the motor to rotate, and the internal thread screw rod can be driven to move forwards or backwards due to a thread structure, so that the extending and contracting functions are completed. In addition, the guide rod and the screw rod are arranged on the same conveying belt, and the motor drives the driving belt wheel to rotate so that the conveying belt moves forwards or backwards.
Automatic clamping device mainly has structures such as motor, oval cam, grip block, spring, and when needs centre gripping test tube, the motor operation drives the cam and rotates for oval cam's major axis direction is in the level, links to each other by the spring between the baffle, and the spring is stretched, and the baffle is pushed open, and the grip block links to each other with the baffle, also is pulled open, puts into wherein the test tube this moment, and the motor stall, the automatic shrink of spring is with the baffle pull back, and the test tube is consequently held.
Through above part, can shift the flat test tube to separator and test-tube rack on to accomplish the full-automatic purpose of changing the test tube. The separator passes through the motor operation for the separator is rotatory constantly, through the oil-water separation of centrifugal action in with the test tube, and oil-water interface is more clear, and the volume calculation of profit is more accurate.
Have unsealed cuboid around measurement system's the test-tube rack, there is infrared emitter cuboid one side, and the motor drives the gear operation for rack up-and-down motion, infrared emitter also reciprocates thereupon, and infrared receiver can feed back control center with the refractive index change of removal in-process, and control center can obtain the interface of profit through the calculation, and then obtains the volume of profit.
The displaced fluid contains gas, the gas enters the dryer through a pipeline on the test tube, the dryer can separate moisture in the gas, the gas continuously flows, low-pressure gas is compressed into high-pressure gas through the compressor and is transferred into the gas storage container, in order to avoid gas backflow, one-way valves are arranged on the pipeline in front of and behind the compressor, and the gas is only allowed to flow in a one-way mode. The volume of the gas storage container is fixed, a pressure sensor is arranged in the gas storage container, pressure data are transmitted to a control center, and the volume of gas under normal pressure can be obtained through calculation.
In addition, the test tube plug and the pipeline are fixed and cannot move, the light receiving and processing device is arranged on the test tube plug, the light source is arranged below the test tube, light emitted by the light source irradiates the test tube, the test tube enters air after being refracted by water and oil liquid, and the air is finally collected by the light receiving and processing device. When the liquid level reaches a certain height, the control center controls the motor to operate to take and replace the test tube; when the liquid level is kept stable for a long time, the output signals are kept consistent, the control center judges that no oil is produced, and then the back pressure pump is operated to increase the back pressure, so that the back pressure is greater than the fluid pressure, and the experiment is ended. Whole oil gas water metering device top can be opened, and the accessible top opening takes out used test tube after the experiment, convenient and fast, and pipeline etc. in it can be dismantled or the adjustment position.
Compared with the existing metering device, the metering device has the following advantages: (1) The metering device can simultaneously measure the volume of oil, gas and water, and the displacement process is fully automatic operation, so that an instrument is not required to be operated by manpower constantly; (2) An infrared transmitting and receiving device is adopted, information is automatically collected by utilizing infrared ray light change, the fluid volume is obtained through analysis, and compared with the manual reading, the error is smaller; (3) The oil-water separation is realized by adopting the centrifugal action of the separator, the interface of the oil and the water in the test tube is more obvious, and the collected data is more accurate.
Drawings
FIG. 1 is a front view of an oil, gas and water metering device
FIG. 2 is a side view of the oil, gas and water metering device
FIG. 3 is a top view of the oil, gas and water metering device
FIG. 4 is a view of a test tube rack device
FIG. 5 shows an automatic clamping device
FIG. 6 is a detailed view of the automatic clamping device
FIG. 7 is a route diagram of an oil-gas-water-gas meter
In the figure, 1, a back pressure valve; 2. a sample introduction line; 3. an air outlet line; 4. a flat-bottomed test tube; 5. a light reception processing device; 6. an automatic clamping device; 7. a telescopic rod; 8. a guide bar; 9, a motor; 10. a driver; 11. rotating the head; 12. a screw rod; 13. a slider; 14. a transmission device; 15. a conveyor belt; 16. a drive pulley; 17. a test tube rack; 18. an open box body; 19. a separator; 20. a light source; 21. an infrared emitter; 22. a gear; 23. an infrared receiver; 24. a clamping plate; 25. a spring; 26. a partition plate; 27. an elliptical cam; 28. a cross beam; 29. a dryer; 30. a one-way valve; 31. an air compressor; 32. a gas storage container; 33. a pressure sensor; 34. a switch; 35. a control panel.
Detailed Description
The present invention is further described below with reference to the accompanying drawings so as to facilitate understanding of the present invention by those skilled in the art. It is to be understood that the invention is not limited in scope to the specific embodiments disclosed, but that various changes in form and detail will be suggested to one skilled in the art and are to be included within the spirit and purview of this application and scope of the appended claims.
A full-automatic high-precision oil-gas-water three-phase metering system based on infrared detection mainly comprises a motor (9), a clamping device (6), an expansion rod (7), a screw rod (11), a dryer (29), a separator (19), a compressor (31), a gas storage container (32) and the like. The fluid that displaces flows out from back pressure valve (1), via pipeline (2) get into flat test tube (4), the difference of flat test tube and ordinary test tube is that whole test tube is cylindricly, the bottom level, and the purpose of design like this is the fluid volume in the test tube of being convenient for the accuracy to confirm.
The test tube is taken down and transferred to a test tube rack (17) through a clamping device (6) and a transmission device (14), the clamping device mainly comprises a guide rod (8), an expansion rod (7), a clamping plate (24) and the like, and the transmission device mainly comprises a screw rod (12), a motor (9), a driver (10), a slider (13), a conveyor belt (15) and the like. The test tube is clamped and fixed by the clamping plate (24), the motor operates to drive the oval cam (27) to rotate, so that the partition plate (26) is pushed away, and the partition plate is connected with the clamping plate, so that the clamping plate is opened; after the motor stops, the elastic force of the spring (25) tightens the partition plate, the clamping plates are combined immediately, and the test tube is clamped.
Automatic clamping device connects telescopic link (7), and grip block (24) and telescopic link (7) are fixed on guide arm (8) through slider (13), and the telescopic link comprises external screw thread pole and internal thread pole, has a motor in the slider, and when the motor operation, external screw thread pole rotates along with the motor rotation, because external screw thread pole can not remove with the motor is fixed, internal thread pole and external screw thread pole meshing, therefore the internal thread pole begins the migration, and the telescopic link begins to extend or shrink promptly for the test tube can be controlled and remove. The guide rod (8) is connected with the screw rod (12) through a cross beam (28), a driver (10) and a slider (13) are respectively arranged on two sides of the cross beam, the driver (10) is a block body embedded with threads and is meshed with the screw rod and moves up and down along with the rotation of the screw rod, a driving device (14) is arranged below the screw rod, and the motor rotates to enable the screw rod to rotate and enable the driver (10) to move up and down. The driver is connected with the slider through a cross beam, and the driver moves, and the slider also moves along with the driver, so that the test tube can move up and down. The motor above the slider drives the rotating head (11) to rotate, so that the test tube can finish multi-dimensional movement. The screw rod and the guide rod are both arranged on a conveying belt (15), the motor drives the driving belt wheel (16) to rotate, the belt wheel is operated through friction force, and the screw rod and the guide rod are both fixed on the conveying belt and move along with the movement of the conveying belt. By the device, the test tube can move up and down, left and right and back and forth, and can be automatically clamped or released, so that the full-automatic test tube replacing process is completed, wherein the left and right movement, the up and down movement and the back and forth movement are determined based on the front view of the oil-gas-water metering device.
The test tube is placed into the separator (19) by the transmission device, the separator is a truncated cone-shaped kettle body, an inclined cylindrical hole is formed in the separator to place the test tube, a motor (9) is arranged below the separator, the motor drives the separator to rotate, oil and water are separated through the centrifugal effect, the oil-water interface is more obvious, and the metering is more accurate.
After taking out the test tube, put into test-tube rack (17) with the test tube automatically on, the test-tube rack is fixed in cuboid (18) that one is not sealed, infrared transmitting device is installed to one side of test-tube rack, infrared transmitting device is by infrared emitter (21), gear (22) and motor (9) are constituteed, infrared emitter's interval is unanimous with the interval between the test tube, infrared receiver (23) are installed to the opposite side, infrared emitter moves about being driven by the motor, the infrared ray of transmission passes oil or water in the test tube, receive and feed back to control center (35) by infrared receiver (23) after the refraction, it is oil or water to analyze out the refraction medium, infrared transmitting device accessible rack reciprocates, the rack can drive infrared emitter (21) through motor and gear operation and move about, therefore the volume that can accurately obtain oil and water through the different feedbacks of refracting index to control center.
The gas in the test tube enters a dryer (29) through an upper pipeline, the dryer (29) removes moisture in the gas, then the low-pressure gas is compressed into high-pressure gas through a compressor (31), the pipelines on two sides of the compressor are connected with a one-way valve (30), only the gas is allowed to pass in one way and enter the high-pressure side from the low-pressure side, and the gas in a gas storage container (32) is prevented from flowing back into the compressor (31). A pressure sensor (33) is arranged in the gas storage container (32), can detect the pressure in the gas storage container and feed back to the control center (35), and when the pressure reaches a certain value, a valve (34) is opened to release the gas in the gas storage container.
The test tube plug is fixed on the pipeline and cannot move, a light receiving and processing device (5) is arranged on the test tube plug, and a light source (20) is arranged below the test tube. In the experimental process, a light source emits a beam of light from the lower part, the light passes through the bottom of the test tube and then enters the liquid in the test tube, and the light passes through the liquid and enters the air, and finally the light is received by the light receiving and processing device and the liquid level is analyzed. When the signal collected by the light receiving and processing device is unchanged for a certain time, namely the liquid level is stable for a long time, the control center (35) judges that the pipeline (2) does not produce oil, controls the back pressure pump to increase the back pressure, and ends the experiment.
The specific experimental process is as follows, reducing the back pressure and making the fluid driven out gradually, the fluid passes through pipeline (2) and gets into test tube (4), when the fluid in the test tube reaches a take the altitude, light receiving processing apparatus (5) on the test tube stopper feeds back to control center (35) after handling the light information, control motor (9) move down and take out the test tube, then put into separator (19) with the test tube according to the operating procedure that sets for, simultaneously, take out another clean test tube (4) on test tube rack (17) and continue to collect the fluid. After a certain period of centrifugal oil-water separation, the test tube is taken out and put into a test tube rack (17), an infrared emitter (21) automatically emits infrared rays, the infrared rays are received by an infrared receiver (23) after passing through fluid in the test tube, and are fed back to a control center (35) according to different refractive indexes, and the volume of oil and water is obtained after the calculation of a computer. The gas is dehydrated by the drier (29) and then enters the compressor (31) through the one-way valve (30), the compressor compresses the gas into high-pressure gas and then injects the high-pressure gas into the gas storage container (32), the pressure sensor (33) transmits the pressure in the gas storage container at any time, and when the pressure reaches a certain value, the valve (34) can be opened to discharge the gas. And when the information received by the light receiving and processing device (5) is stable and unchanged for a certain time, the control center (35) judges that the pipeline does not produce oil at the moment, controls the back pressure pump to increase the back pressure, and stops the experiment.
Fig. 7 is oil gas water metering device's circuit diagram, control center reduces the back pressure and makes the fluid flow out, light receiving processing apparatus in the test tube feeds back to control center and calculates the liquid level height, when reaching a take the altitude, control center controls centre gripping transmission and shifts the test tube to the separator, on shifting the test tube to the test-tube rack after the oil-water separation, the information transmission that the infrared emission receiving arrangement of test-tube rack both sides will be collected gives control center, control center calculates the volume of profit. In addition, the gas in the test tube enters the gas storage container after being processed, a pressure sensor in the gas storage container feeds pressure information back to the control center, the control center calculates the volume of the gas, and when the pressure reaches a certain value, the control center controls the gas storage container to open the valve to release the gas. When the information fed back to the control center by the light receiving processing device in the test tube is unchanged for a long time, the oil is considered to be not discharged any more, the control center raises the back pressure, and the experiment is ended.
The present invention is not limited to the above embodiments, and various modifications are possible for those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A full-automatic high-precision oil-gas-water three-phase metering system based on infrared detection mainly comprises a motor, a gear, a screw rod, a rack, a separator, a dryer, a one-way valve, a compressor, a gas storage container, a control panel and the like; the fluid displaced flows out of the back pressure valve to a flat-bottom test tube through a pipeline, a light receiving and processing device is arranged on a test tube plug, a light source is arranged below the test tube, the flat-bottom test tube moves through a transmission device, the transmission device mainly comprises a motor, a screw rod, a gear and the like, a guide rod is connected with the screw rod through a cross beam, an actuator with internal threads is arranged on the screw rod, the motor below the screw rod drives the gear to rotate, the gear on a bearing rod is meshed with the screw rod to drive the screw rod to rotate, and the actuator can drive a slider on the guide rod to move up and down along with the rotation of the screw rod; the motor on the slider drives the rotating head to realize multi-dimensional operation displacement of the test tube; a motor is arranged on the left of the rotating head and can drive a telescopic rod to rotate, the telescopic rod consists of an external thread screw rod and an internal thread screw rod, in addition, the guide rod and the screw rods are arranged on one conveying belt, and the motor drives a driving belt wheel to rotate so that the conveying belt moves forwards or backwards; the automatic clamping device clamps the test tube through structures such as a motor, an oval cam, a clamping plate, a spring and the like; the separator rotates to separate liquid by centrifugal action; the test tube rack is provided with an infrared transmitting and receiving device and a gear rack, and can analyze the volume of the liquid; the gas storage container calculates the gas volume via a pressure sensor.
2. The transmission device as claimed in claim 1, which mainly comprises a motor, a screw rod, a gear and the like, wherein the guide rod is connected with the screw rod through a cross beam, the screw rod is provided with a transmission device with internal threads, the motor below the screw rod rotates to drive a bevel gear to rotate, the bevel gear is meshed with another bevel gear to enable the gear to rotate horizontally to drive a bearing rod to rotate, and the gear on the bearing rod is meshed with the screw rod to drive the screw rod to rotate; along with the rotation of the screw rod, the driver can drive the slider on the guide rod to move up and down; the motor on the slider drives the rotating head to realize multi-dimensional operation displacement of the test tube; the motor is arranged on the left side of the rotating head and can drive the telescopic rod to operate, the telescopic rod consists of an external thread screw rod and an internal thread screw rod, and when the motor operates, the external thread screw rod is driven by the motor to rotate so as to complete the functions of extension and contraction; the guide rod and the screw rod are arranged on the same conveying belt, and the motor drives the driving belt wheel to rotate so that the conveying belt moves forwards or backwards.
3. A holding device according to claim 1, wherein the holding device is adapted to automatically perform both the gripping of the test tube and the releasing of the test tube.
4. The separator of claim 1, wherein the kettle body is driven by the motor to rotate, so that oil-water separation is more obvious, and the obtained volume data is more accurate.
5. The system of claim 1, wherein the volume of the fluid in the test tube is monitored in real time by the infrared ray transmitting and receiving device and the refractive index change of the infrared ray passing through the liquid, and the system automatically controls the back pressure to finish the test.
6. A gas storage container according to claim 1, wherein after the gas is pressurized, the volume of the gas at a certain pressure is calculated by a pressure sensor in the container and related information such as a gas volume coefficient inputted in advance.
7. The full-automatic high-precision oil-gas-water three-phase metering system based on infrared detection as claimed in claim 1, wherein the whole metering system is fully automatically carried out, and the system automatically judges that the experiment is finished when no fluid is produced, and does not need manual operation, and fluid information is observed or recorded.
CN202211705848.5A 2022-12-29 2022-12-29 Full-automatic high-precision oil-gas-water three-phase metering system based on infrared detection Active CN115791683B (en)

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