CN220542393U

CN220542393U - Gas-liquid two-phase flow test device

Info

Publication number: CN220542393U
Application number: CN202322214823.1U
Authority: CN
Inventors: 徐菁菁; 孙海素; 陆琛亮
Original assignee: Shanghai Merchant Ship Design and Research Institute
Current assignee: Shanghai Merchant Ship Design and Research Institute
Priority date: 2023-08-17
Filing date: 2023-08-17
Publication date: 2024-02-27
Anticipated expiration: 2033-08-17

Abstract

The utility model belongs to the technical field of ships and discloses a gas-liquid two-phase flow test device which comprises a circulating water pipe, an air pipe, a particle emission mechanism and a measuring mechanism, wherein the circulating water pipe is provided with a water flow channel, the air pipe and the circulating water pipe are integrally arranged, the air pipe is provided with a gas channel, the gas channel is communicated with the water flow channel to form the gas-liquid channel, the particle emission mechanism is arranged on the air pipe, the measuring mechanism is positioned at the outer side of the circulating water pipe, a tested piece is positioned in the gas-liquid channel, trace particles are emitted to the water flow channel and the gas channel through the particle emission mechanism, the measuring mechanism can capture flow field information of a water flow field, an air flow field and a gas-liquid interface of the tested piece, and the wind tunnel test and the circulating water channel test are organically combined.

Description

Gas-liquid two-phase flow test device

Technical Field

The utility model relates to the technical field of ships, in particular to a gas-liquid two-phase flow test device.

Background

The wind tunnel test is an aerodynamic experimental method for arranging a tested object in a wind tunnel, researching the gas flow and the interaction of the gas flow and the tested object so as to know the aerodynamic characteristics of the tested object, and can be applied to the development of aircrafts, the optimization design of ship superstructures and the coupling research of air flow fields. Wind resistance in the air flow field of the ship superstructure is a factor affecting the rapidity of the ship and the environmental conditions of the take-off and landing of the aircraft.

Because the air flow field of the ship superstructure is very complex, the maneuverability and the flight safety of the aircraft can be directly influenced, the method is very important for the experimental study of the air flow field of the ship superstructure, and particularly for the measurement of hydrodynamic performance. In the prior art, an object to be measured is fixed in a circulating water tank, water flow is pushed by a water pump to circularly flow in the circulating water tank, and the water flow speed can be changed by adjusting the rotating speed of the water pump, so that the relative motion between the object to be measured and the water flow is formed, and the hydrodynamic performance of the object to be measured is measured. However, whether it is an aerodynamic wind tunnel test or a hydrodynamic performance measurement circulating water tank test, only a dynamic flow field under one medium is measured singly, and the test conditions are different, so that the consistency and accuracy of the test results are affected.

Therefore, a gas-liquid two-phase flow test apparatus is needed to solve the above problems.

Disclosure of Invention

The utility model aims to provide a gas-liquid two-phase flow test device, which organically combines a wind tunnel test and a circulating water tank test in practical application, efficiently, accurately and comprehensively captures a microscopic flow field of a gas-liquid two-phase flow of a piece to be tested for testing and analyzing, thereby obtaining a more complete and comprehensive test result.

In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme:

a gas-liquid two-phase flow test device comprising:

a circulating water pipe having a water flow passage;

the air pipe is positioned above the circulating water pipe, the air pipe and the circulating water pipe are integrally arranged, the air pipe is provided with a gas channel, the gas channel is communicated with the water flow channel and forms a gas-liquid channel, and the gas-liquid channel is used for accommodating a tested piece;

the particle emission mechanism is arranged on the air pipe and is used for emitting trace particles to the water flow channel and the gas channel;

the measuring mechanism is positioned at the outer side of the circulating water pipe and is used for measuring the air flow field and the water flow field of the measured piece.

Preferably, the gas-liquid two-phase flow test device further comprises a telescopic support, the telescopic support is movably arranged above the air pipe, a telescopic end of the telescopic support is located in the gas-liquid channel and used for fixing the tested piece, and the telescopic support can be lifted in the vertical direction so that the tested piece moves in the gas channel and the water flow channel.

Preferably, the telescopic bracket comprises a fixing part and a telescopic part, the fixing part is mounted on the air pipe, the telescopic part is rotatably connected to the fixing part through a rotating shaft, and the telescopic part is configured to rotate relative to the fixing part and can adjust an angle between the telescopic part and the air pipe.

Preferably, the adjustment range of the included angle between the telescopic part and the air pipe is more than or equal to 0 degrees and less than or equal to 180 degrees.

Preferably, the particle emission mechanism comprises a particle generator and a particle emitter, the particle generator is located outside the air pipe, the particle emitter is located in the air channel, the particle generator is communicated with the particle emitter, the particle emitter is provided with a plurality of emission ports, one part of the emission ports face the air channel, and the other part of the emission ports face the water flow channel.

Preferably, the measuring mechanism comprises a camera and a laser, and the camera and the laser are respectively used for capturing an air flow field and a water flow field of the measured piece in the gas-liquid channel.

Preferably, the gas-liquid two-phase flow test device further comprises a damping net, wherein the damping net is arranged in the gas channel and is used for stabilizing the gas flow in the gas channel.

Preferably, the gas-liquid two-phase flow test device further comprises a honeycomb device, the honeycomb device is arranged in the gas channel, the honeycomb device is located between the particle emission mechanism and the damping net, the honeycomb device is multiple in number, and the honeycomb devices are arranged at intervals along the gas flow direction of the gas channel.

Preferably, the gas-liquid two-phase flow test device further comprises a driving mechanism, the driving mechanism comprises a motor and paddles, the motor is arranged on the circulating water pipe, the output end of the motor is connected with the paddles, the paddles are rotatably arranged in the water flow channel, and the water flow channel is of an annular structure.

Preferably, the gas-liquid two-phase flow test device further comprises a flowmeter, wherein the flowmeter is arranged in the gas channel and is positioned at one side of the particle emission mechanism, and the flowmeter is used for measuring the flow of different gases in the gas channel.

The beneficial effects of the utility model are as follows:

the utility model provides a gas-liquid two-phase flow test device, wherein a circulating water pipe is provided with a water flow channel, an air pipe is positioned above the circulating water pipe, the air pipe and the circulating water pipe are integrally arranged, the air pipe is provided with a gas channel, the gas channel is communicated with the water flow channel to form a gas-liquid channel, and the gas-liquid channel is used for accommodating a tested piece. The particle emission mechanism is arranged on the air pipe, and the measuring mechanism is positioned on the outer side of the circulating water pipe. Air is continuously supplied into the air pipe, the water flow channel of the circulating water pipe is provided with water flow, the measured piece is positioned in the gas-liquid channel, trace particles are simultaneously emitted to the water flow channel and the gas channel through the particle emission mechanism, and in the test process, the measuring mechanism can capture flow field information of the water flow field of the measured piece positioned in the water flow channel, the air flow field of the air channel and the gas-liquid interface of the gas-liquid channel through collecting images and providing a sheet light source. The device organically combines the wind tunnel test and the circulating water tank test in practical application, and efficiently, accurately and comprehensively captures the microscopic flow field of the gas-liquid two-phase flow of the piece to be tested for testing and analyzing under the conditions of not disturbing the flow field to be tested and the same working condition, thereby obtaining more complete and comprehensive test results.

Drawings

Fig. 1 is a schematic structural diagram of a gas-liquid two-phase flow test device according to an embodiment of the present utility model.

Reference numerals:

1. a circulating water pipe; 2. a water flow channel; 3. an air duct; 4. a gas channel; 5. a gas-liquid passage; 6. a telescopic bracket; 7. a particle generator; 8. a particle emitter; 9. a camera; 10. a laser; 11. a damping net; 12. a honeycomb device; 13. a motor; 14. a paddle; 15. a flow meter.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1, in the present embodiment, the gas-liquid two-phase flow test apparatus includes a circulating water pipe 1, an air pipe 3, a particle emission mechanism, and a measurement mechanism. The circulating water pipe 1 is provided with a water flow channel 2, the air pipe 3 is positioned above the circulating water pipe 1, the air pipe 3 and the circulating water pipe 1 are integrally arranged, the air pipe 3 is provided with a gas channel 4, the gas channel 4 is communicated with the water flow channel 2 to form a gas-liquid channel 5, and the gas-liquid channel 5 is used for accommodating a tested piece. The particle emission mechanism is arranged on the air pipe 3 and is used for emitting trace particles to the water flow channel 2 and the gas channel 4, the measuring mechanism is positioned on the outer side of the circulating water pipe 1 and is used for measuring the air flow field and the water flow field of the measured piece. Specifically, be provided with the fan in the air intake department of tuber pipe 3, under the effect of fan, with the continuous air feed in tuber pipe 3, simultaneously, circulating water pipe 1's rivers passageway 2 has rivers to pass through, and the measured piece is located gas-liquid channel 5, launches the tracer particle to rivers passageway 2 and gas channel 4 simultaneously through particle emission mechanism, in the test process, measuring mechanism through gathering the image and providing the light source of piece, can catch the measured piece and be located the water flow field of rivers passageway 2, be located the air flow field of air passageway and be located the flow field information of the gas-liquid interface of gas-liquid channel 5. The device applies PIV test technology, is a two-dimensional flow field non-contact test technology based on flow field image analysis, and has the basic principle that the particle speed is used for representing the movement speed of fluid at a corresponding point in the flow field where the particle speed is positioned, the flow field speed vector distribution is obtained by measuring the particle speed, a wind tunnel test and a circulating water tank test are organically combined in practical application, and the microscopic flow field of the gas-liquid two-phase flow of a piece to be tested is efficiently, accurately and comprehensively captured for test and analysis under the condition of not disturbing the flow field to be tested and the same working condition, so that a more complete and comprehensive test result is obtained, and the device has great significance in development of aircrafts, performance research of propellers, hydrodynamic performance research of underwater aircrafts, research of air flow field characteristics of ship superstructures and the like.

Further, with continued reference to fig. 1, the gas-liquid two-phase flow test device further includes a telescopic support 6, the telescopic support 6 is movably disposed above the air duct 3, a telescopic end of the telescopic support 6 is located in the gas-liquid channel 5 and is used for fixing a tested piece, and the telescopic support 6 can be lifted in a vertical direction, so that the tested piece moves in the gas channel 4 and the water flow channel 2. Specifically, one end of the telescopic bracket 6 is arranged on the side wall of the air pipe 3, and the other end of the telescopic bracket extends into the air-liquid channel 5 and is connected with a measured piece. Under the telescopic action of the telescopic bracket 6, the tested piece can stretch up and down along the vertical direction, namely, moves between the gas channel 4 and the water flow channel 2, so that the information of the air flow field and the water flow field can be measured.

Further, with continued reference to fig. 1, the telescopic bracket 6 includes a fixing portion mounted to the air duct 3 and a telescopic portion rotatably connected to the fixing portion through a rotation shaft, the telescopic portion being configured to rotate relative to the fixing portion and capable of adjusting an angle between the telescopic portion and the air duct 3, and an adjustment range of an included angle between the telescopic portion and the air duct 3 is greater than or equal to 0 ° and less than or equal to 180 °. The telescopic bracket 6 can rotate relative to the air pipe 3, and can adjust air flow fields or water flow fields with different sections of the water flow direction or the air flow direction of the to-be-tested piece, so that test data are more complete and comprehensive.

Further, with continued reference to fig. 1, the particle emission mechanism includes a particle generator 7 and a particle emitter 8, the particle generator 7 is located outside the air duct 3, the particle emitter 8 is located in the air channel 4, the particle generator 7 is communicated with the particle emitter 8, the particle emitter 8 is provided with a plurality of emission ports, one part of the emission ports face the air channel 4, and the other part of the emission ports face the water flow channel 2. Specifically, the particle emitter 8 is composed of a plurality of resin tubules, and the particle emitter 8 distributes the trace particles as uniformly as possible without disturbing the flow field. The particle generator generates trace particles through the controller, provides uniform trace particles for the air pipe 3 and the circulating water pipe 1, and finally captures flow field information through the testing mechanism.

Further, with continued reference to fig. 1, the measuring mechanism includes a camera 9 and a laser 10, where the camera 9 and the laser 10 are used to capture an air flow field and a water flow field of the measured piece in the gas-liquid channel 5, respectively. Specifically, the camera 9 collects images, the laser 10 provides a sheet light source, and in the test stage, the flow field information of the water flow field, the air flow field and the gas-liquid interface of the tested piece can be captured by the adjustable high-speed camera 9 and changing the position of the laser 10.

Further, with continued reference to fig. 1, the gas-liquid two-phase flow test apparatus further includes a damping net 11 and a plurality of honeycombs 12, the damping net 11 is disposed in the gas channel 4, the damping net 11 is used for stabilizing the gas flow in the gas channel 4, the honeycombs 12 are disposed in the gas channel 4, the honeycombs 12 are located between the particle emitting mechanism and the damping net 11, the number of the honeycombs 12 is plural, and the plurality of honeycombs 12 are disposed at intervals along the gas flow direction of the gas channel 4. Specifically, the tracer particles enter the particle emitter 8 through the pipeline to emit, and then the air flow can be rectified, straightened and stabilized as much as possible through the damping net 11 and the plurality of honeycombs 12, and PIV measurement tests can be performed. Preferably, the water flow channel 2 is also provided with a honeycomb 12, and the water flow in the water flow channel 2 is rectified by the honeycomb 12.

Further, with continued reference to fig. 1, the gas-liquid two-phase flow test device further includes a driving mechanism, the driving mechanism includes a motor 13 and a blade 14, the motor 13 is disposed in the circulating water pipe 1, an output end of the motor 13 is connected to the blade 14, the blade 14 is rotatably disposed in the water flow channel 2, and the water flow channel 2 is in a ring structure. Specifically, the motor 13 is started, and the motor 13 drives the blades 14 to rotate in the water flow channel 2, so that water flows circularly in the annular circulating water pipe 1 and is rectified through the honeycomb 12.

Further, with continued reference to fig. 1, the gas-liquid two-phase flow test apparatus further includes a flow meter 15, where the flow meter 15 is disposed in the gas channel 4 and located at one side of the particle emission mechanism, and the flow meter 15 is used to measure the flow rates of different gases in the gas channel 4. Specifically, the particle emitter 8 emits trace particles to the air duct 3 and the circulating water pipe 1, and the flowmeter 15 measures to obtain the distribution concentration of the trace particles suitable for PIV image processing under different airflow rates.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The gas-liquid two-phase flow test device is characterized by comprising:

a circulation water pipe (1), the circulation water pipe (1) having a water flow passage (2);

the air pipe (3), the air pipe (3) is located above the circulating water pipe (1), the air pipe (3) and the circulating water pipe (1) are integrally arranged, the air pipe (3) is provided with a gas channel (4), the gas channel (4) is communicated with the water flow channel (2) to form a gas-liquid channel (5), and the gas-liquid channel (5) is used for accommodating a tested piece;

the particle emission mechanism is arranged on the air pipe (3) and is used for emitting trace particles to the water flow channel (2) and the gas channel (4);

the measuring mechanism is positioned at the outer side of the circulating water pipe (1) and is used for measuring the air flow field and the water flow field of the measured piece.

2. The gas-liquid two-phase flow test device according to claim 1, further comprising a telescopic bracket (6), wherein the telescopic bracket (6) is movably arranged above the air pipe (3), a telescopic end of the telescopic bracket (6) is positioned in the gas-liquid channel (5) and is used for fixing the tested piece, and the telescopic bracket (6) can be lifted in the vertical direction so that the tested piece moves in the gas channel (4) and the water flow channel (2).

3. The gas-liquid two-phase flow test apparatus according to claim 2, wherein the telescopic bracket (6) comprises a fixing portion and a telescopic portion, the fixing portion is mounted to the air duct (3), the telescopic portion is rotatably connected to the fixing portion through a rotation shaft, the telescopic portion is configured to rotate relative to the fixing portion, and an angle between the telescopic portion and the air duct (3) can be adjusted.

4. A gas-liquid two-phase flow test apparatus according to claim 3, characterized in that the adjustment range of the angle between the telescopic part and the air duct (3) is greater than or equal to 0 ° and less than or equal to 180 °.

5. The gas-liquid two-phase flow test device according to claim 1, wherein the particle emission mechanism comprises a particle generator (7) and a particle emitter (8), the particle generator (7) is located outside the air pipe (3), the particle emitter (8) is located in the air channel (4), the particle generator (7) is communicated with the particle emitter (8), the particle emitter (8) is provided with a plurality of emission ports, one part of the emission ports face the air channel (4), and the other part of the emission ports face the water flow channel (2).

6. The gas-liquid two-phase flow test device according to claim 1, wherein the measuring mechanism comprises a camera (9) and a laser (10), and the camera (9) and the laser (10) are respectively used for capturing an air flow field and a water flow field of the tested piece in the gas-liquid channel (5).

7. The gas-liquid two-phase flow test device according to claim 1, further comprising a damping net (11), the damping net (11) being arranged in the gas channel (4), the damping net (11) being used for stabilizing the gas flow in the gas channel (4).

8. The gas-liquid two-phase flow test apparatus according to claim 7, further comprising a honeycomb (12), the honeycomb (12) being disposed in the gas channel (4), and the honeycomb (12) being located between the particle emitting mechanism and the damping net (11), the number of the honeycomb (12) being plural, the plural honeycomb (12) being disposed at intervals along the gas flow direction of the gas channel (4).

9. The gas-liquid two-phase flow test device according to claim 1, further comprising a driving mechanism, wherein the driving mechanism comprises a motor (13) and paddles (14), the motor (13) is arranged on the circulating water pipe (1), an output end of the motor (13) is connected with the paddles (14), the paddles (14) are rotatably arranged in the water flow channel (2), and the water flow channel (2) is in a ring structure.

10. The gas-liquid two-phase flow test apparatus according to claim 1, further comprising a flow meter (15), the flow meter (15) being arranged in the gas channel (4) and being located at one side of the particle emission mechanism, the flow meter (15) being adapted to measure the flow rates of different gases in the gas channel.