Air injection device for measuring gas content of gas-liquid two-phase flow in pipeline

Abstract

The utility model relates to the technical field of nozzles, in particular to an air injection device for measuring the gas content of gas-liquid two-phase flow in a pipeline. Comprising a fixing piece communicated with an air source; the movable part is arranged on the fixed part in an orientation-adjustable manner and is provided with a nozzle communicated with an air source; and the rotating sheet is rotatably arranged in the movable part and is positioned at the air inlet end of the nozzle. The rotating piece is of a central symmetry structure and comprises a first blade and a second blade, the second blade is perpendicular to the first blade; the third blade is arranged at the ends, facing the nozzle, of the first blade and the second blade and is perpendicular to the first blade and the second blade. The first blade and the second blade are of a semicircular sheet structure, and the third blade is of a rectangular sheet structure. According to the device, the air injection direction can be adjusted, and the uniformly distributed air injection flow can be provided, so that the applicability and the accuracy of the measurement of the gas content of the gas-liquid two-phase flow in the pipeline are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nozzle technical field, concretely is a kind of for the gas-liquid two-phase flow gas content measurement of inside pipeline air injection device. BACKGROUND

[0002] Gas-liquid two-phase flow widely exists in the industrial processes of energy, power, oil and gas and chemical industry, wherein the gas content is a key parameter to characterize the flow characteristics of two-phase flow, directly affects process control, resource utilization efficiency and system safe operation. Therefore, the accurate measurement of gas content has important significance for the optimization and safety protection of related industrial processes.

[0003] At present, the common gas-liquid two-phase flow gas content measurement device in pipe usually needs to pass gas into liquid to form two-phase flow medium. For example, patent CN222926629U discloses a pipe gas-liquid two-phase flow gas content measurement device based on image recognition, which identifies by visual means and then obtains gas content data.

[0004] However, the air injection device for forming two-phase flow in the prior art generally has problems such as single air injection direction, uneven air distribution, easy flow turbulence and the like. These deficiencies make it difficult to form stable and uniform gas-liquid two-phase flow in the pipeline, thereby directly affecting the accuracy and reliability of gas content measurement, and limiting the further application of such measurement method.

[0005] Therefore, it is a key problem to design an air injection device capable of realizing uniform air distribution and stable and controllable flow to form a gas-liquid two-phase flow environment meeting the measurement requirements, so as to improve the accuracy and reliability of gas content measurement. UTILITY MODEL CONTENT

[0006] In order to solve the technical problems in the background art, the utility model provides an air injection device for gas-liquid two-phase flow gas content measurement in pipeline, which can adjust the air injection direction and provide uniform air injection flow, thereby significantly improving the applicability and accuracy of gas-liquid two-phase flow gas content measurement in pipeline.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] An air injection device for gas-liquid two-phase flow gas content measurement in pipeline, comprising:

[0009] A fixed part in communication with a gas source;

[0010] A movable part adjustably disposed on the fixed part and provided with a nozzle in communication with the gas source;

[0011] A rotating plate rotatably disposed in the movable part and located at the air inlet end of the nozzle.

[0012] Further, the rotating piece is a center-symmetrical structure, comprising:

[0013] a first blade;

[0014] a second blade, which is arranged perpendicularly to the first blade;

[0015] a third blade, which is arranged at one end of the first blade and the second blade towards the nozzle and is arranged perpendicularly to the first blade and the second blade.

[0016] Further, the first blade and the second blade are semi-circular sheet structures, and the third blade is a rectangular sheet structure.

[0017] Further, the movable piece comprises:

[0018] a ball, which is movably embedded on the fixed piece;

[0019] a ball groove, which is arranged on the ball and is used for rotatably embedding the first blade and the second blade;

[0020] a conical groove, which is arranged on the ball and is used for rotatably embedding the third blade;

[0021] The gas source is communicated with the nozzle through the ball groove and the conical groove in sequence.

[0022] Further, the fixed piece is provided with a rotating fastener, the rotating fastener is threadedly connected with the fixed piece, and the movable piece is pressed on the fixed piece.

[0023] Further, the fixed piece is provided with a buckle, and the buckle is used for connecting and fixing the fixed piece with the gas source.

[0024] Further, a sealing ring is arranged at the connection between the fixed piece and the gas source.

[0025] The beneficial effects of the utility model are as follows:

[0026] (1) The movable piece is arranged on the fixed piece in a direction-adjustable manner, so that the spraying direction of the nozzle can be flexibly adjusted according to actual pipeline working conditions and measurement requirements. The adaptability of the device to different installation positions and different flow patterns of two-phase flow is enhanced, and the use range is expanded.

[0027] (2) By arranging the rotating piece with the center-symmetrical structure, the airflow is guided and rectified in multiple directions before entering the nozzle, the uniformity and stability of the airflow distribution are effectively improved, and reliable gas source conditions are provided for the subsequent accurate measurement of the gas content.

[0028] (3) The ball groove and the conical groove are arranged in the movable piece to rotatably embed the blades of the rotating piece, which not only ensures the smooth rotation of the rotating piece under the action of the airflow, but also ensures the continuity and smoothness of the flow channel from the gas source to the nozzle, reduces unnecessary flow loss and disturbance. BRIEF DESCRIPTION OF DRAWINGS

[0029] The utility model is further explained in connection with the drawings and examples.

[0030] Figure 1 is the structure diagram of the utility model;

[0031] Figure 2 is the explosion drawing of the utility model;

[0032] Figure 3 is the structure diagram of the rotary piece;

[0033] Figure 4 is the sectional view of the movable part;

[0034] Figure 5 is the sectional view of the utility model.

[0035] In the drawing:

[0036] 1. fixed part, 2. movable part, 3. rotary part, 4. rotary piece, 5. sealing ring, 6. buckle;

[0037] 21. ball, 22. ball groove, 23. taper groove, 24. nozzle;

[0038] 41. first blade, 42. second blade, 43. third blade. DETAILED DESCRIPTION

[0039] The utility model is further explained in connection with the drawings.

[0040] As Figure 1 、 2 shown, a kind of for the gas-liquid two-phase flow gas rate measurement of pipeline inside jet device, its specific structure includes fixed part 1, fixed part 1 is fixedly connected with gas source and is communicated with.To specific embodiment, gas source is the trachea of internal ventilation, fixed part 1 is fixedly arranged on the trachea, and is communicated with the ventilation hole on the lateral wall of trachea.

[0041] Movable part 2 is adjustably arranged on fixed part 1, and is provided with nozzle 24 communicated with gas source.No.2 movable part is adjustably arranged on fixed part, so that the jet direction of nozzle 24 can be flexibly adjusted according to actual pipeline working condition and measurement demand.Enhances the adaptability of device to different installation positions, different flow pattern two-phase flow, expands its use range.

[0042] The rotating piece 4 is in clearance fit with the movable piece 2, and is rotatably arranged in the movable piece 2 and located at the air inlet end of the nozzle 24. By arranging the rotating piece 4, the air flow is guided and straightened in multiple directions before entering the nozzle 24, effectively improving the uniformity and stability of the air flow distribution, thereby providing reliable air source conditions for the subsequent accurate measurement of the gas content.

[0043] As shown in Figure 3 , the rotating piece 4 is a central symmetric structure, and its specific structure includes a first blade 41, a second blade 42 and a third blade 43. The second blade 42 is arranged perpendicularly to the first blade 41. The third blade 43 is arranged at one end of the first blade 41 and the second blade 42 towards the nozzle 24, and is arranged perpendicularly to the first blade 41 and the second blade 42. The first blade 41 and the second blade 42 are semicircular sheet structures, and are inclined at a certain angle to the center line of the rotating piece 4. The third blade 43 is a rectangular sheet structure, and coincides with the center line of the rotating piece 4. The first blade 41, the second blade 42 and the third blade 43 form a spiral flow guide structure.

[0044] As shown in Figure 4 , 5 , the specific structure of the movable piece 2 includes a ball 21, which is movably embedded on the fixed piece 1 and is in sealed connection with the fixed piece 1. A ball groove 22 is formed on the ball 21 for rotatably embedding the first blade 41 and the second blade 42. A tapered groove 23 is formed on the ball 21 for rotatably embedding the third blade 43. The ball groove 22, the tapered groove 23 and the nozzle 24 are connected in sequence. The air source is in communication with the nozzle 24 through the ball groove 22 and the tapered groove 23 in sequence. The inside of the movable piece 2 rotatably embeds the blades of the rotating piece 4 through the ball groove 22 and the tapered groove 23, which not only ensures the smooth rotation of the rotating piece 4 along its center line under the action of the air flow, but also ensures the continuity and smoothness of the flow channel from the air source to the nozzle 24, reducing unnecessary flow loss and disturbance. The rotation of the rotating piece 4 can further play a guiding and straightening role, effectively improving the uniformity and stability of the air flow distribution, thereby providing reliable air source conditions for the subsequent accurate measurement of the gas content.

[0045] The fixed piece 1 is provided with a rotating fastener 3, which is in threaded connection with the fixed piece 1 and presses the movable piece 2 tightly on the fixed piece 1. The fixed piece 1 is provided with a buckle 6 for connecting and fixing the fixed piece 1 with the air source. A sealing ring 5 is arranged at the connection between the fixed piece 1 and the air source. The above structures can be referred to the related existing structures, so the specific structural details will not be described in detail.

[0046] With the above ideal embodiment of the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A gas injection device for gas-liquid two-phase flow gas holdup measurement in a pipe, characterized in that, The utility model relates to a kind of gas injection devices for pipe gas-liquid two-phase flow gas holdup measurement, including: Fixed part (1) is communicated with gas source; Movable part (2) is adjustably arranged on the fixed part (1) towards, and nozzle (24) is opened with the gas source communication; Rotary vane (4) is rotatably arranged in the movable part (2), and located the air inlet end of nozzle (24).

2. The gas injection device of claim 1, wherein: The rotary vane (4) is a center-symmetric structure, comprising: First blade (41); Second blade (42) is arranged perpendicularly to the first blade (41); Third blade (43) is arranged at one end of the first blade (41) and the second blade (42) towards the nozzle (24), and is arranged perpendicularly to the first blade (41) and the second blade (42).

3. The gas injection device of claim 2, wherein: The first blade (41) and the second blade (42) are semicircular sheet structures, and the third blade (43) is a rectangular sheet structure.

4. The gas injection device of claim 3, wherein: The movable part (2) comprises: Ball (21) is movably embedded on the fixed part (1); Ball groove (22) is opened on the ball (21), for rotatably embedding the first blade (41) and the second blade (42); Conical groove (23) is opened on the ball (21), for rotatably embedding the third blade (43); The gas source is communicated with the nozzle (24) through the ball groove (22) and the conical groove (23) in turn.

5. The gas injection device of claim 1, wherein: A threaded fastener (3) is provided on the fixed part (1), the threaded fastener (3) is threadedly connected with the fixed part (1), and the movable part (2) is pressed on the fixed part (1).

6. The gas injection device of claim 1, wherein: A buckle (6) is installed on the fixed part (1), and the buckle (6) is used to connect and fix the fixed part (1) with the gas source.

7. The gas injection device of claim 1, wherein: A sealing ring (5) is provided at the connection between the fixed part (1) and the gas source.

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