CN114280140A - Two-phase flow detection device and detection method based on ultrasonic sensing technology - Google Patents

Two-phase flow detection device and detection method based on ultrasonic sensing technology Download PDF

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CN114280140A
CN114280140A CN202111464084.0A CN202111464084A CN114280140A CN 114280140 A CN114280140 A CN 114280140A CN 202111464084 A CN202111464084 A CN 202111464084A CN 114280140 A CN114280140 A CN 114280140A
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ultrasonic
liquid
module
oil
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CN114280140B (en
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蒋超
何峰
张龙赐
李剑斌
王小浩
罗鹏
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CETC 48 Research Institute
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Abstract

The invention discloses a two-phase flow detection device and a detection method based on an ultrasonic sensing technology, wherein the detection device comprises a rectifier tube, a detection tube, an ultrasonic sensor module and an imaging module; the rectifying tube is used for changing the flowing state of the oil-gas mixed liquid to form gas-liquid layering; the detection tube is butted with the outlet end of the rectifying tube and is used for stabilizing the fluid form of the oil-gas mixed liquid; the ultrasonic sensor module is arranged on the outer wall of the detection pipe and used for detecting the content of gas and liquid in the oil-gas mixed liquid in the detection pipe; and the imaging module is connected with the ultrasonic sensor module and used for collecting and correcting the spatial coordinate data of the ultrasonic sensor module and coupling the data to form a three-dimensional scale model. The invention has the advantages of simple structure, high precision, good accuracy, high integration level, stable performance, good adaptability and the like.

Description

Two-phase flow detection device and detection method based on ultrasonic sensing technology
Technical Field
The invention mainly relates to the technical field of petroleum detection, in particular to a two-phase flow detection device and a detection method based on an ultrasonic sensing technology.
Background
The detection of the gas content in petroleum is an urgent problem to be solved in the petroleum industry, and the main reason is that the petroleum extracted from different oil fields has complex components and various forms such as gas-in-oil or gas-in-water. At present, methods such as a capacitance tomography technology, a conductivity detection technology, a radio frequency detection technology and the like are mainly adopted in the technical field of oil gas content detection, but the detection methods have the defects of more flow pattern limitation, poor measurement precision, large detection blind area, large fitting difficulty of detection data and the like, the oil gas content data and the proportion of the oil gas content data are difficult to accurately measure, and the oil gas content can be simply judged only according to an empirical formula.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the problems in the prior art, the invention provides the two-phase flow detection device and the detection method based on the ultrasonic sensing technology, which have the advantages of simple structure, high precision and high integration level.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a two-phase flow detection device based on an ultrasonic sensing technology comprises a rectifier tube, a detection tube, an ultrasonic sensor module and an imaging module;
the rectifying tube is used for changing the flowing state of the oil-gas mixed liquid to form gas-liquid layering;
the detection tube is butted with the outlet end of the rectifying tube and is used for stabilizing the fluid form of the oil-gas mixed liquid;
the ultrasonic sensor module is arranged on the outer wall of the detection pipe and used for detecting the content of gas and liquid in the oil-gas mixed liquid in the detection pipe;
and the imaging module is connected with the ultrasonic sensor module and used for collecting and correcting the spatial coordinate data of the ultrasonic sensor module and coupling the data to form a three-dimensional scale model.
As a further improvement of the above technical solution:
the rectifying tube comprises a base and a splitter vane, the base is a gas-liquid splitter component with a special-shaped cavity structure, an inner cavity at an inlet end of the base is of a circular structure and gradually transits to a square structure close to an outlet end of the base, and the base is used for smoothly transiting oil-gas mixed liquid in the inner cavity of the circular structure to the inner cavity of the square structure and forming a standard fluid form with a definite boundary; the splitter vane is arranged in the inner cavity of the square structure and used for separating gas and liquid in the oil-gas mixed liquid.
The splitter plate is provided with semicircular protruding punching structures which are arranged at intervals, so that the separation and splitting of gas in the oil-gas mixed liquid are facilitated; wherein the section of the semicircular protruding punching structure faces the outlet end of the rectifier tube.
The ultrasonic sensor module comprises a high-frequency ultrasonic module and a low-frequency ultrasonic module; wherein, the two groups of high-frequency ultrasonic modules are respectively arranged on the bottom surface and the side surface of the outer wall of the outlet end of the detection tube; the two groups of low-frequency ultrasonic modules are respectively installed on the top and the side of the outer wall of the outlet end of the detection tube in a perforation way and are symmetrically arranged with the high-frequency ultrasonic modules; the high-frequency ultrasonic module is transmitted in liquid but cannot be transmitted in gas and is used for detecting the space ratio of the liquid; the low-frequency ultrasonic module is propagated in gas but not propagated in liquid and is used for detecting the space occupation ratio of the gas.
The high-frequency ultrasonic module is a group of 2-5 MHZ ultrasonic sensor longitudinal arrays; the low-frequency ultrasonic module is a group of 100-800 KHZ ultrasonic sensor longitudinal arrays.
The detection tube is a stainless steel tube with flanges at two ends, the inside of the detection tube has high smoothness to reduce the flowing resistance of the oil-gas mixed liquid, and the detection tube is connected with the rectifier tube through a stud combination.
And a sealing element is arranged between the detection tube and the rectifying tube to form effective sealing.
The sealing element is a metal winding sealing ring.
The imaging module comprises an upper computer, and when a cubic three-dimensional scale model is formed, a gas-liquid volume proportion parameter data file is automatically generated.
The invention also discloses a detection method of the two-phase flow detection device based on the ultrasonic sensing technology, which comprises the following steps:
the ultrasonic sensor module detects the content of gas and liquid in the oil-gas mixed liquid in the detection pipe;
the imaging module collects and corrects the spatial coordinate data of the ultrasonic sensor module and couples the data to form a three-dimensional scale model.
Compared with the prior art, the invention has the advantages that:
the two-phase flow detection device provided by the invention utilizes the transmission characteristics of ultrasonic waves with different frequencies to detect the liquid level height and the fluid state (wherein the transmission characteristics of high-frequency ultrasonic waves in a solid are good, the measurement is accurate, the transmission capability of low-frequency ultrasonic waves in gas is strong, and the distance measurement is fast and accurate), the high-frequency ultrasonic modules and the low-frequency ultrasonic modules are symmetrically arranged and installed, the oil-gas mixed liquid is detected, the gas content in oil is judged by distinguishing the space curve of the interface of two substances, so that the gas-liquid content proportion can be quickly and accurately analyzed, a very intuitive continuously updated three-dimensional proportion model can be provided, and the observation and analysis of the gas-liquid proportion and the flow pattern state of the oil-gas mixed liquid by operators are facilitated.
The two-phase flow detection device based on different ultrasonic frequency transmission characteristics has the advantages of low data fitting difficulty, good engineering implementation, simple structure, high precision, good accuracy, high integration level, stable performance, good adaptability and the like in the overall design.
The two-phase flow detection device provided by the invention adopts the ultrasonic sensing module with mature technology and higher precision, so that the processing difficulty of detection data can be greatly simplified, and the measurement precision is effectively improved. Meanwhile, due to the mature and diversified technology of the ultrasonic sensing module, the requirements of installation, debugging and cost control can be well met, and the ultrasonic sensing module has a very wide market application prospect.
Drawings
Fig. 1 is a schematic structural diagram of a detection apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a rectifying tube according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a detection tube and an ultrasonic sensor module according to an embodiment of the present invention.
Fig. 4 is a schematic layout diagram of an ultrasonic sensor module according to an embodiment of the present invention.
FIG. 5 is an effect diagram of a three-dimensional scale model after data fitting of the imaging module of the present invention.
Illustration of the drawings: 1. a rectifier tube; 11. a splitter plate; 111. a semicircular convex punching structure; 12. a base; 2. a detection tube; 3. an ultrasonic sensor module; 31. a high-frequency ultrasonic module; 32. a low frequency ultrasound module; 4. an imaging module; 5. combining the stud bolts; 6. a metal winding seal ring; 7. oil-gas mixed liquid; 71. a gas; 72. a liquid.
Detailed Description
The invention is further described below with reference to the figures and the specific embodiments of the description.
As shown in fig. 1, the two-phase flow detection device according to the embodiment of the present invention includes a rectifier tube 1, a detection tube 2, an ultrasonic sensor module 3, and an imaging module 4; the rectifying tube 1 is used for changing the flowing state of the oil-gas mixed liquid 7 to form gas-liquid layered flow; the detection tube 2 is butted with the outlet end of the rectifying tube 1 and is used for stabilizing the fluid form of the oil-gas mixed liquid 7; the ultrasonic sensor module 3 is arranged on the outer wall of the detection pipe 2 and is used for detecting the content of gas 71 and liquid 72 in the oil-gas mixed liquid 7 in the detection pipe 2; and the imaging module 4 is connected with the ultrasonic sensor module 3 and used for collecting and correcting detection data of the ultrasonic sensor module 3 and coupling the data to form a cubic three-dimensional proportion model.
As shown in fig. 1 and fig. 2, in a specific embodiment, the rectifier tube 1 includes a splitter 11 and a base 12, wherein the base is a gas-liquid splitter with a special-shaped cavity structure, and an inner cavity of an inlet end of the base is a circular structure and gradually transits to a square structure adjacent to an outlet end of the base, so as to smoothly transit the oil-gas mixture in the inner cavity of the circular structure to the inner cavity of the square structure and form a standard fluid form with a definite boundary. The flow dividing plate 11 is arranged in the inner cavity of the square structure and is used for separating gas 71 and liquid 72 in the oil-gas mixed liquid 7; and the base 12 is used for welding and fixing the splitter plate 11 and is formed into a whole.
Specifically, the number of the splitter plates 11 is multiple, the splitter plates are vertically arranged in an inner cavity of a square structure, a plurality of through holes are arranged on each splitter plate 11 at intervals, each splitter plate 12 is gradually inclined downwards along the direction from the inlet end to the outlet end of the rectifying tube 1 and is used for extruding fluid to enable gas to be upwards discharged through the through holes as soon as possible, semicircular protruding punching structures 111 are arranged on the splitter plates 11 at intervals, and the sections of the semicircular protruding punching structures 111 face the outlet end; when the oil-gas mixture 7 passes through, the semicircular convex punching structure 111 generates a fluid vortex strip (as shown in fig. 2) due to the pressure difference between the upper surface and the lower surface, and contributes to the separation and diversion of the gas 71 in the oil-gas mixture 7.
As shown in fig. 1 and 3, in a specific embodiment, the detecting tube 2 is a stainless steel tube (e.g. a square tube, where the square tube facilitates the installation of the ultrasonic sensor and the establishment of spatial coordinates through the installation position to facilitate stereoscopic imaging display) with flanges at both ends, and has a high finish inside to reduce the flow resistance of the oil-gas mixture 7 for stabilizing the fluid form of the oil-gas mixture 7, and one end of the detecting tube is connected with the rectifying tube 1 by a stud bolt assembly 5, and a metal wound sealing ring 6 is added between the two for pressing to form a seal.
As shown in fig. 3 and 4, the ultrasonic sensor modules 3 are mounted on the outer wall of the detection tube 2 in a symmetrical layout and in pairs. Specifically, the ultrasonic sensor module 3 includes a high-frequency ultrasonic module 31 and a low-frequency ultrasonic module 32,. Two groups of high-frequency ultrasonic modules 31 are respectively arranged on the bottom surface and the side surface of the outer wall of the outlet end of the detection tube 2; the low-frequency ultrasonic modules 32 are arranged in two groups, are respectively installed on the top and the side of the outer wall of the outlet end of the detection tube 2 through holes and are symmetrically arranged in pairs with the high-frequency ultrasonic modules 31. The high-frequency ultrasonic module 31 is a group of 2-5 MHz ultrasonic sensor longitudinal arrays which can be transmitted in liquid but can not be transmitted in gas and is used for detecting the space ratio of the liquid 72; the low-frequency ultrasonic module 32 is a group of 100-800 KHZ ultrasonic sensor longitudinal arrays which can be transmitted in gas but can not be transmitted in liquid and is used for detecting the space occupation ratio of the gas 71.
As shown in fig. 5, in a specific embodiment, the imaging module 4 is configured to process spatial coordinate data information detected by the ultrasonic sensor module 3 for coupling and correcting, combine the spatial coordinate data information into an intuitive three-dimensional stereo scale model which is updated in real time and can drag the mouse to display coordinate point data, and automatically generate data files such as gas-liquid volume ratio parameters (a specific imaging technology belongs to a conventional technology).
The two-phase flow detection device utilizes the transmission characteristics of ultrasonic waves with different frequencies to detect the liquid level height and the fluid state (wherein the transmission characteristics of high-frequency ultrasonic waves in a solid are good, the measurement is accurate, the transmission capability of low-frequency ultrasonic waves in gas is strong, and the distance measurement is fast and accurate), the high-frequency ultrasonic modules 31 and the low-frequency ultrasonic modules 32 are symmetrically arranged and installed, simultaneously detect oil-gas mixed liquid, judge the gas content in oil by distinguishing a space curve of an interface of two substances, can quickly and accurately analyze the gas-liquid content ratio, can provide a very intuitive continuously updated three-dimensional proportion model, and is beneficial to observing and analyzing the gas-liquid ratio and the flow pattern state of oil-gas by operators.
The two-phase flow detection device based on different ultrasonic frequency transmission characteristics has the advantages of low data fitting difficulty, good engineering implementation, simple structure, high precision, good accuracy, high integration level, stable performance, good adaptability and the like in the overall design.
The two-phase flow detection device adopts the ultrasonic sensing module 3 with mature technology and higher precision, can greatly simplify the processing difficulty of detection data and effectively improve the measurement precision. Meanwhile, due to the mature and diversified technology of the ultrasonic sensing module 3, the requirements of installation, debugging and cost control can be well met, and the ultrasonic sensing module has a very wide market application prospect.
The embodiment of the invention also discloses a detection method of the two-phase flow detection device based on the ultrasonic sensing technology, which comprises the following steps: the ultrasonic sensor module 3 detects the contents of gas 71 and liquid 72 in the oil-gas mixed liquid 7 in the detection pipe 2; the imaging module 4 collects and corrects the space coordinate data of the ultrasonic sensor module 3, couples and processes the data to form a three-dimensional proportion model, and automatically generates data files such as gas-liquid volume proportion parameters. The detection method is realized based on the detection device, and the detection method is accurate in measurement and easy to realize.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.

Claims (10)

1. A two-phase flow detection device based on an ultrasonic sensing technology is characterized by comprising a rectifying tube (1), a detection tube (2), an ultrasonic sensor module (3) and an imaging module (4);
the rectifying tube (1) is used for changing the flowing state of the oil-gas mixed liquid (7) to form gas-liquid layering;
the detection tube (2) is in butt joint with the outlet end of the rectifying tube (1) and is used for stabilizing the fluid form of the oil-gas mixed liquid (7);
the ultrasonic sensor module (3) is arranged on the outer wall of the detection pipe (2) and is used for detecting the content of gas (71) and liquid (72) in the oil-gas mixed liquid (7) in the detection pipe (2);
and the imaging module (4) is connected with the ultrasonic sensor module (3) and is used for collecting and correcting the spatial coordinate data of the ultrasonic sensor module (3) and coupling the data to form a three-dimensional scale model.
2. The two-phase flow detection device based on the ultrasonic sensing technology according to claim 1, wherein the rectifier tube (1) comprises a base (12) and a splitter vane (11), the base (12) is a gas-liquid splitter component with a special-shaped cavity structure, an inner cavity of an inlet end of the base (12) is of a circular structure, the base gradually transits to a square structure adjacent to an outlet end, and is used for smoothly transiting oil-gas mixed liquid in the inner cavity of the circular structure to the inner cavity of the square structure and forming a standard fluid form with a definite boundary; the flow dividing plate (11) is arranged in an inner cavity of the square structure and used for separating gas (71) and liquid (72) in the oil-gas mixed liquid (7).
3. The two-phase flow detection device based on the ultrasonic sensing technology according to claim 2, wherein the splitter vane (11) is provided with semicircular protruding punching structures (111) arranged at intervals to facilitate the separation and splitting of the gas (71) in the oil-gas mixed liquid (7); wherein the section of the semicircular convex punching structure (111) faces the outlet end of the rectifying tube (1).
4. The two-phase flow detection device based on ultrasonic sensing technology according to claim 1, 2 or 3, characterized in that the ultrasonic sensor module (3) comprises a high-frequency ultrasonic module (31) and a low-frequency ultrasonic module (32); wherein, two groups of high-frequency ultrasonic modules (31) are respectively arranged on the bottom surface and the side surface of the outer wall of the outlet end of the detection tube (2); two groups of low-frequency ultrasonic modules (32) are respectively installed on the top and the side of the outer wall of the outlet end of the detection tube (2) in a perforation way and are symmetrically arranged with the high-frequency ultrasonic module (31); wherein the high-frequency ultrasonic module (31) is propagated in the liquid but not propagated in the gas and is used for detecting the space ratio of the liquid (72); the low frequency ultrasound module (32) is propagated in a gas but not in a liquid for detecting the spatial occupancy of the gas (71).
5. The two-phase flow detection device based on the ultrasonic sensing technology according to claim 4, wherein the high-frequency ultrasonic module (31) is a group of 2-5 MHZ ultrasonic sensor longitudinal arrays; the low-frequency ultrasonic module (32) is a group of 100-800 KHZ ultrasonic sensor longitudinal array.
6. The two-phase flow detection device based on the ultrasonic sensing technology according to claim 1, 2 or 3, wherein the detection pipe (2) is a stainless steel pipe with flanges at two ends, the inside of the detection pipe is highly polished to reduce the flow resistance of the oil-gas mixed liquid (7), and the detection pipe (2) is connected with the rectifier pipe (1) through a stud bolt combination (5).
7. The two-phase flow detection device based on ultrasonic sensing technology according to claim 6, characterized in that a sealing member is arranged between the detection pipe (2) and the rectifying pipe (1) to form an effective seal.
8. The two-phase flow detection device based on ultrasonic sensing technology according to claim 7, wherein the sealing member is a metal-wound sealing ring (6).
9. The two-phase flow detection device based on the ultrasonic sensing technology according to claim 1, 2 or 3, wherein the imaging module (4) comprises an upper computer, and when a cubic three-dimensional scale model is formed, a gas-liquid volume proportion parameter data file is automatically generated.
10. A detection method of the two-phase flow detection device based on the ultrasonic sensing technology according to any one of claims 1 to 9, characterized by comprising the steps of:
the ultrasonic sensor module (3) detects the content of gas (71) and liquid (72) in the oil-gas mixed liquid (7) in the detection pipe (2);
the imaging module (4) collects and corrects the spatial coordinate data of the ultrasonic sensor module (3), and couples the data to form a three-dimensional scale model.
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