Tracer particle generator and tracer particle generating system

Abstract

The utility model discloses a tracer particle generator and a tracer particle generation system. The tracer particle generator comprises a tracer particle generator body, an ejection opening, a bubble liquid connector, an air connector, a gas connector, a bubble liquid flow channel, an air flow channel and a gas flow channel. Wherein the ejection opening, the bubble liquid interface, the air interface and the gas interface are arranged on the tracer particle generator body; the bubble liquid flow channel, the air flow channel and the gas flow channel are arranged in the tracer particle generator body, and the bubble liquid flow channel is communicated with the bubble liquid connector and the ejection opening; the air flow channel is communicated with the ejection opening; the gas flow channel is communicated with the gas interface and the ejection opening; an air pipe is arranged on the air connector, one end of the air pipe extends into the air flow channel, and the other end of the air pipe is communicated with the air module. The air pipe is arranged on the air connector, and one end of the air pipe extends into the air flow channel, so that bubble liquid is prevented from flowing back into the air module.

Description

Technical Field

[0001] The present application relates to the technical field of PIV velocity field measurement, and in particular to a tracer particle generator and a tracer particle generating system. Background Art

[0002] At present, a tracer particle generation system is used to perform tomographic PIV measurements on complex flow fields. The specific measurement principle is that the tracer particle generation system includes a tracer particle generator, a helium module, an infusion device and an air module. The helium source is used to transport helium into the tracer particle generator, the air module is used to transport air into the tracer particle generator, and the infusion device is used to transport bubble liquid into the tracer particle generator; after the helium, air and bubble liquid enter the tracer particle generator, the helium is squeezed and destabilized by the air under the wrapping of the bubble liquid to form continuous and stable bubble tracer particles; the bubble tracer particles are sprayed into the flow field through the nozzle of the tracer particle generator. After that, the movement of the bubble tracer particles is monitored by an imaging instrument to monitor the distribution of the flow field.

[0003] In the prior art, a tracer particle generator is provided with a bubble liquid flow channel for supplying bubble liquid to flow, an air flow channel for supplying air to flow, and a gas flow channel for supplying helium or other gases to flow; the bubble liquid in the bubble liquid flow channel, the air in the air flow channel, and the gas in the gas flow channel will converge at a certain place inside the tracer particle generator, which makes it easy for the bubble liquid to flow back into the air module through the air flow channel, causing interruption and turbulence of the air flow, thereby affecting the reliability and continuous stability of bubble generation. Utility Model Content

[0004] The purpose of the present application is to provide a tracer particle generator and a tracer particle generating system, which can prevent bubble liquid from flowing back into the air module.

[0005] The embodiment of the present application is implemented as follows:

[0006] In the first aspect, the present application provides a tracer particle generator, comprising a tracer particle generator body, a nozzle, a bubble liquid interface, an air interface, a gas interface, a bubble liquid flow channel, an air flow channel and a gas flow channel; wherein, the nozzle, the bubble liquid interface, the air interface and the gas interface are arranged on the tracer particle generator body; the bubble liquid flow channel, the air flow channel and the gas flow channel are arranged in the tracer particle generator body, the bubble liquid flow channel is connected with the bubble liquid interface and the nozzle; the air flow channel is connected with the nozzle; the gas flow channel is connected with the gas interface and the nozzle; an air pipe is provided on the air interface, one end of the air pipe extends into the air flow channel, and the other end of the air pipe is connected with the air module.

[0007] In one embodiment, the air interface and the bubble liquid interface are arranged at a preset angle along the circumference of the tracer particle generator body; wherein the preset angle is 0 to 10°.

[0008] In one embodiment, the tracer particle generator body includes a shell, a central axis tube and an inner tube; wherein the central axis tube is located inside the shell, and an air flow channel is formed between the outer wall surface of the central axis tube and the inner wall surface of the shell; the inner tube is located inside the central axis tube, a bubble liquid flow channel is formed between the inner wall surface of the central axis tube and the outer wall surface of the inner tube, and a gas flow channel is formed on the inner wall surface of the inner tube.

[0009] In one embodiment, the spray port, the bubble liquid interface, and the air interface are disposed on the housing.

[0010] In one embodiment, an opening is provided on the shell, and when the central axis tube is located in the shell, one end of the central axis tube extends through the opening to cooperate with the gas interface.

[0011] In one embodiment, a clamping portion communicating with the bubble liquid flow channel and the gas interface is disposed in the central axis tube, and one end of the inner tube is clamped in the clamping portion.

[0012] In one embodiment, the tracer particle generator further includes at least one fixing member; wherein the fixing member is disposed in the bubble liquid flow channel, and the fixing member is used to fix the inner tube.

[0013] In one embodiment, the fixing piece is sleeved on the inner tube, and a plurality of protrusions are arranged at intervals on the outer wall surface of the fixing piece, and the protrusions abut against the inner wall surface of the central axis tube.

[0014] In one embodiment, the shape of the tracer particle generator body is olive-shaped.

[0015] In the second aspect, the present application provides a tracer particle generating system, which, in addition to the above-mentioned tracer particle generator, also includes an infusion device, a gas module and an air module; wherein the infusion device is connected to the bubble liquid interface, and the infusion device is used to transport bubble liquid into the bubble liquid flow channel; the gas module is connected to the gas interface, and the gas module is used to transport gas into the gas flow channel; the air module is connected to the air pipe, and the air module is used to transport air into the air flow channel.

[0016] The beneficial effects of this application compared with the prior art are:

[0017] The present application provides a tracer particle generator, which includes a tracer particle generator body; a nozzle, a bubble liquid interface, an air interface and a gas interface are provided on the tracer particle generator body; a bubble liquid flow channel, an air flow channel and a gas flow channel are provided in the tracer particle generator body; the bubble liquid flow channel is connected with the bubble liquid interface and the nozzle; the air flow channel is connected with the nozzle; the gas flow channel is connected with the gas interface and the nozzle; an air pipe is provided on the air interface, one end of the air pipe extends into the air flow channel, and the other end of the air pipe is connected with the air module.

[0018] In the present application, an air pipe is provided on the air interface, and one end of the air pipe is extended into the air flow channel, so as to avoid the bubble liquid from flowing back into the air module. On the basis of avoiding the bubble liquid from flowing back into the air module, the interruption and turbulence of the air flow are avoided, and the reliability and continuous stability of the bubble generation are ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a tracer particle generation system in the prior art;

[0021] Figure 2 A schematic diagram of the structure of a tracer particle generator provided in one embodiment of the present application;

[0022] Figure 3 For the tracer particle generator Figure 2 Schematic diagram of the cross section along the AA direction;

[0023] Figure 4 A schematic diagram of the structure of a tracer particle generator body provided in one embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of a central axis tube provided in one embodiment of the present application;

[0025] Figure 6 A schematic diagram of the structure of a fixing member provided in one embodiment of the present application.

[0026] Reference numerals:

[0027] 1-tracer particle generating system; 10-infusion device; 20-tracer particle generator; 30-air module; 40-gas module; 210-tracer particle generator body; 211-shell; 2111-nozzle cover; 2112-nozzle body; 212-central axis tube; 2121-first annular protrusion; 2122-second annular protrusion; 2123-first through hole; 2124-fourth target flow channel; 213-inner tube; 220-spout; 230-bubble liquid interface; 231-third target flow channel; 240-air interface; 241-air tube; 250-gas interface; 251-second target flow channel; 260-air flow channel; 270-bubble liquid flow channel; 271-fixing piece; 2711-second through hole; 2712-protrusion; 280-gas flow channel; 290-sealing ring. DETAILED DESCRIPTION

[0028] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the products of the present application are usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0031] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0032] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings.

[0033] Please refer to Figure 1 , which is a schematic diagram of the structure of the tracer particle generation system 1 in the prior art. Figure 1As shown, the tracer particle generating system 1 includes an infusion device 10, a tracer particle generator 20, a gas module 40 and an air module 30. The infusion device 10, the gas module 40 and the air module 30 are all connected to the tracer particle generator 20; the tracer particle generator 20 is provided with at least one; each tracer particle generator 20 is provided with a spray port, a gas interface, an air interface and a bubble liquid interface, and each tracer particle generator 20 is provided with a bubble liquid flow channel, an air flow channel and a gas flow channel inside; the bubble liquid flow channel is connected to the bubble liquid interface and the spray port, the air flow channel is connected to the air interface and the spray port, and the gas flow channel is connected to the gas interface and the spray port. The infusion device 10 is connected to the bubble liquid interface on each tracer particle generator 20, and is used to transport bubble liquid into the bubble liquid flow channel; the gas module 40 is connected to the gas interface on each tracer particle generator 20, and is used to transport gases such as helium and hydrogen into the gas flow channel; the air module 30 is connected to the air interface on each tracer particle generator 20, and is used to transport air into the air flow channel.

[0034] In practice, the bubble liquid in the bubble liquid flow channel, the air in the air flow channel, and the gas in the gas flow channel will converge at a certain point inside the tracer particle generator 20, and the gas will be wrapped by the bubble liquid after convergence; then the air squeezes the gas wrapped by the bubble liquid, and after squeezing, continuous and stable bubble tracer particles are formed; then the bubble tracer particles are sprayed into the flow field through the nozzle of the tracer particle generator 20. Furthermore, by monitoring the movement of the tracer particles through an imaging instrument, the distribution of the flow field can be monitored. Among them, when the gas module 40 transports helium to the gas flow channel, the bubble tracer particles are helium bubbles; when the gas module 40 transports hydrogen to the gas flow channel, the bubble tracer particles are hydrogen bubbles; the tracer particles have good flow followability and imaging visibility.

[0035] However, in practice, a first target flow channel connected to the air flow channel and the air module 30 is provided in the air interface, and the air module 30 transports air to the air flow channel through the first target flow channel; further, because the bubble liquid in the bubble liquid flow channel, the air in the air flow channel and the gas in the gas flow channel will converge at a certain place inside the tracer particle generator 20, when the air interface is set downward, the bubble liquid can easily flow back into the air module 30 through the air flow channel and the first target flow channel, causing interruption and turbulence of the air flow, thereby affecting the reliability and continuous stability of bubble bubbling.

[0036] In order to solve the above problems, the present application provides a tracer particle generator 20. The specific structure of the tracer particle generator 20 in the present application is explained in detail below.

[0037] Please refer to Figure 2, which is a schematic diagram of the structure of a tracer particle generator 20 provided in one embodiment of the present application. Figure 3 , which is the tracer particle generator along Figure 2 Schematic diagram of the cross section along the AA direction. Figure 3 As shown, the tracer particle generator 20 in this embodiment includes a tracer particle generator body 210, a nozzle 220, a bubble liquid interface 230, an air interface 240, a gas interface 250, a bubble liquid flow channel 270, an air flow channel 260 and a gas flow channel 280; wherein the nozzle 220, the bubble liquid interface 230, the air interface 240 and the gas interface 250 are arranged on the tracer particle generator body 210; the bubble liquid flow channel 270, the air flow channel 260 and the gas flow channel 280 are arranged in the tracer particle generator body 210, the bubble liquid flow channel 270 is connected with the bubble liquid interface 230 and the nozzle 220; the air flow channel 260 is connected with the nozzle 220; the gas flow The channel 280 is connected to the gas interface 250 and the ejection port 220; specifically, the gas interface 250 is provided with a second target channel 251, the second target channel 251 is connected to the gas channel 280 and the gas module 40, and the gas module 40 transports gas to the gas channel 280 through the second target channel 251; the bubble liquid interface 230 is provided with a third target channel 231, the third target channel 231 is connected to the bubble liquid channel 270 and the infusion device 10, and the infusion device 10 transports bubble liquid to the bubble liquid channel 270 through the third target channel 231; the air interface 240 is provided with a first target channel, and the first target channel is connected to the air channel 260 and the air module 30, such as Figure 3 As shown, in this embodiment, an air pipe 241 is provided on the air interface 240. Specifically, as Figure 3 As shown, the air pipe 241 is arranged in the first target flow channel, one end of the air pipe 241 extends into the air flow channel 260, and the other end of the air pipe 241 is connected to the air module 30; the air module 30 introduces air into the air flow channel 260 through the air pipe 241.

[0038] In the prior art, such as Figure 3As shown, when the air interface 240 is set downward, the lowest flow channel surface of the air flow channel 260 is directly connected to the flow channel opening of the first target flow channel, so that the bubble liquid can easily flow into the first target flow channel under the action of gravity; in this embodiment, by setting an air pipe 241 in the first target flow channel, and making one end of the air pipe 241 extend into the air flow channel 260; so that the lowest flow channel surface of the air flow channel 260 is not directly connected to the port of the air pipe 241, it is effectively prevented from flowing into the air pipe 241 due to gravity, and then effectively blocks the bubble liquid from entering the air module 30. On the basis of preventing the bubble liquid from flowing back into the air module 30, the interruption and turbulence of the air flow are avoided, and the reliability and continuous stability of the bubble bubbling are guaranteed. Among them, the lowest flow channel surface of the air flow channel 260 refers to the flow channel surface in contact with the bubble liquid in the air flow channel 260.

[0039] It is worth noting that in this embodiment, the air tube 241 is in close contact with the flow channel surface of the first target flow channel, thereby preventing the bubble liquid from flowing out of the gap between the first target flow channel and the air tube 241. Specifically, the air tube 241 can be closely bonded to the flow channel surface of the first target flow channel by means of glue connection.

[0040] like Figure 3 As shown, the air interface 240 and the bubble liquid interface 230 are arranged at preset angles along the circumference of the tracer particle generator body 210; wherein the preset angle is 0 to 10 degrees.

[0041] In practice, the tracer particle generator 20 is usually used in a wind tunnel. However, when the air interface 240 and the bubble liquid interface 230 are set one downward and the other upward, the wind resistance is large, which will interfere with the flow field and affect the monitoring results of the flow field; it also affects the aesthetics of the tracer particle generator 20. For this reason, in this embodiment, by setting the air interface 240 and the bubble liquid interface 230 at a circumferential interval of 0 to 10° along the tracer particle generator body 210, the air interface 240 and the bubble liquid interface 230 are basically overlapped, thereby reducing wind resistance and improving the aesthetics of the tracer particle generator 20. In addition, in order to facilitate the removal of the tracer particle generator 20, one interface needs to be set at the bottom. In summary, Figure 3 As shown, in this embodiment, the air interface 240 and the bubble liquid interface 230 are both arranged at the bottom.

[0042] Please refer to Figure 4 , which is a schematic diagram of the structure of the tracer particle generator body 210 provided in one embodiment of the present application. Figure 5 , which is a schematic diagram of the structure of the central axis tube 212 provided in an embodiment of the present application. Figure 6 , which is a schematic diagram of the structure of the fixing member 271 provided in one embodiment of the present application.

[0043] like Figure 4 As shown, in this embodiment, the tracer particle generator body 210 includes a shell 211, a central shaft tube 212 and an inner tube 213; wherein the central shaft tube 212 is a cylindrical shaft structure, the central shaft tube 212 is located in the shell 211, and an air flow channel 260 is formed between the outer wall surface of the central shaft tube 212 and the inner wall surface of the shell 211; specifically, as Figure 4 and Figure 5 As shown, a first gap is formed between the outer wall of the central axis tube 212 and the inner wall of the shell 211, and a first annular protrusion 2121 is provided on the outer wall of the central axis tube 212. A plurality of first through holes 2123 connected to the first gap are formed on the first annular protrusion 2121. The first through holes 2123 and the first gap constitute an air flow channel 260. Figure 4 As shown, the inner tube 213 is located in the central axis tube 212, and a bubble liquid flow channel 270 is formed between the inner wall surface of the central axis tube 212 and the outer wall surface of the inner tube 213, and a gas flow channel 280 is formed on the inner wall surface of the inner tube 213. The ejection port 220, the bubble liquid interface 230 and the air interface 240 are arranged on the housing 211; Figure 4 As shown, the central axis tube 212 is provided with a fourth target flow channel 2124, the fourth target flow channel 2124 is connected to the third target flow channel 231 and the bubble liquid flow channel 270, and the bubble liquid flow channel 270 is connected to the third target flow channel 231 through the fourth target flow channel 2124; further, as Figure 4 As shown, the shell 211 is provided with an opening, and when the central shaft tube 212 is located in the shell 211, one end of the central shaft tube 212 extends through the opening to match with the gas interface 250; specifically, the gas interface 250 is provided with a matching hole, and one end of the central shaft tube 212 extends through the opening and then extends into the matching hole to match with the matching hole; illustratively, the central shaft tube 212 can be threadedly matched with the matching hole. Further, as Figure 4 As shown, after the central axis tube 212 is matched with the matching hole, the end surface of the gas interface 250 abuts against the end surface of the shell 211, and a sealing ring 290 is provided at the abutting point.

[0044] like Figure 4As shown, the shell 211 includes a nozzle cover 2111 and a nozzle body 2112, the spray port 220 is provided at one end of the nozzle cover 2111, and the other end of the nozzle cover 2111 is an open structure; both ends of the nozzle body 2112 are open structures; the other end of the nozzle cover 2111 is connected to one end of the nozzle body 2112. Specifically, a first annular groove is provided on the outer wall of the nozzle cover 2111, and a second annular groove is provided on the inner wall of the nozzle body 2112; the nozzle cover 2111 and the nozzle body 2112 are connected by the above-mentioned first annular groove and the second annular groove; illustratively, the nozzle cover 2111 and the nozzle body 2112 can be glued together. The air interface 240 and the bubble liquid interface 230 are provided on the nozzle body 2112 and are integrally formed with the nozzle body 2112. As shown Figure 4 As shown, a snap-fit ​​groove is provided in the housing 211, and a second annular protrusion 2122 is provided on the outer wall surface of the central axis tube 212. The second annular protrusion 2122 abuts against the groove surface of the snap-fit ​​groove, and a sealing ring 290 is provided between the second annular protrusion 2122 and the groove surface of the snap-fit ​​groove.

[0045] In this embodiment, the gas interface 250 is arranged at the tail of the tracer particle generator 20, so that the gas interface 250 is connected to the central axis tube 212 and abuts against the end surface of the shell 211, thereby reducing wind resistance and improving the aesthetics of the tracer particle generator 20.

[0046] In one embodiment, the tracer particle generator body 210 has an olive shape.

[0047] In this embodiment, the tracer particle generator body 210 is olive-shaped, which reduces wind resistance, reduces the interference of the tracer particle generator 20 on the flow field, and ensures the monitoring result of the flow field.

[0048] In one embodiment, the inner tube 213 is fixedly disposed in the bubble liquid flow channel 270. The fixing method of the inner tube 213 is described below. Figure 4 As shown, a clamping portion connected to the bubble liquid flow channel 270 and the gas interface 250 is provided in the central axis tube 212, one end of the inner tube 213 is clamped in the clamping portion, and the rest of the inner tube 213 is located in the bubble liquid flow channel 270; specifically, one end of the clamping portion is connected to one end of the bubble liquid flow channel 270, and the other end of the bubble liquid flow channel 270 is aligned with the ejection port 220; the other end of the clamping portion is connected to the second target flow channel 251. Exemplarily, the inner tube 213 and the clamping portion can be glued together.

[0049] When the inner tube 213 is fixed in the above manner, the suspended portion of the inner tube 213 is relatively long, and the suspended portion is unstable and prone to shaking under the impact of high-pressure air and bubble liquid; the nozzle 220 is relatively small, and when shaking occurs, the inner tube 213 and the nozzle 220 will be eccentric, and the eccentricity causes the tracer particle generator 20 to be unable to generate bubbles, or causes the tracer particle generator 20 to be unable to continuously and stably produce bubbles. In order to improve the above problems, in this embodiment, the tracer particle generator 20 also includes at least one fixing member 271, and the fixing member 271 is arranged in the bubble liquid flow channel 270. The suspended portion of the inner tube 213 is fixed by the fixing member 271 to prevent the suspended portion from shaking, so that the inner tube 213 and the nozzle 220 can be aligned, ensuring that the tracer particle generator 20 can continuously and stably generate bubbles.

[0050] In addition, the coaxiality between the clamping portion and the nozzle 220 can be improved to ensure that the inner tube 213 can be aligned with the nozzle 220 and no eccentricity occurs. However, this method requires very high processing accuracy, is not easy to process, has poor processability, cannot guarantee the consistency of processing accuracy of each batch of parts, and has high processing costs. In this embodiment, the inner tube 213 is fixed by the fixing member 271, which also effectively solves the above-mentioned problem.

[0051] like Figure 6 As shown, the fixing member 271 is provided with a second through hole 2711, and the fixing member 271 is sleeved on the inner tube 213 through the second through hole 2711. A plurality of protrusions 2712 are provided at intervals on the outer wall surface of the fixing member 271, and the protrusions 2712 abut against the inner wall surface of the central axis tube 212. By making the protrusions 2712 abut against the inner wall surface of the central axis tube 212, the fixing member 271 can be stably fixed in the bubble liquid flow channel 270, thereby ensuring that the fixing member 271 can stably fix the suspended part of the inner tube 213; in addition, by providing a plurality of protrusions 2712 at intervals on the outer wall surface of the fixing member 271, the gap formed between two adjacent protrusions 2712 can be connected to the bubble liquid flow channel 270, ensuring that the bubble liquid can flow smoothly. For example, as Figure 6 As shown, in this embodiment, there are three protrusions 2712, and the three protrusions 2712 are evenly distributed on the outer wall surface of the fixing member 271 in the circumferential direction; the fixing member 271 is close to the ejection port 220. The inner tube 213 and the fixing member 271 can be connected by gluing.

[0052] In another embodiment, the fixing member 271 can be a cylindrical structure, the outer wall surface of the fixing member 271 abuts against the inner wall surface of the central axis tube 212, the fixing member 271 is sleeved on the central axis tube 212, and a plurality of third through holes are provided on the fixing member 271, and the plurality of third through holes are connected to the bubble liquid flow channel 270 to ensure that the bubble liquid can flow smoothly.

[0053] Of course, it is understandable that the inner tube 213 can be fixed by using the above-mentioned clamping portion and multiple fixing members 271, or the inner tube 213 can be fixed by using only multiple fixing members 271. When multiple fixing members 271 are provided, the multiple fixing members 271 can be arranged in the bubble liquid flow channel 270 at equal intervals along the extension direction of the bubble liquid flow channel 270.

[0054] The working principle of the tracer particle generator 20 in this application is explained in detail below:

[0055] When monitoring the flow field, the air module 30 can pass high-pressure air into the air channel 260 through the air pipe 241; the infusion device 10 can input bubble liquid into the bubble liquid channel 270 through the third target channel 231 and the fourth target channel 2124; the gas module 40 can input helium and other gases into the gas channel 280 through the second target channel 251; after the input, the high-pressure air, bubble liquid, helium and other gases are Figure 4 The gas such as helium is gathered at C in the middle, and after the gathering, the gas is wrapped by the bubble liquid; then the air squeezes the gas wrapped by the bubble liquid, and after squeezing, a continuous and stable bubble tracer particle is formed; then the bubble tracer particle is sprayed into the flow field through the spray port 220 of the tracer particle generator 20. Furthermore, by monitoring the movement of the tracer particles through an imaging instrument, the distribution of the flow field can be monitored.

[0056] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tracer particle generator, characterized in that: The tracer particle generator comprises: Tracer particle generator body; The ejection port, the bubble liquid interface, the air interface and the gas interface are arranged on the tracer particle generator body; The bubble liquid flow channel, the air flow channel and the gas flow channel are arranged in the body of the tracer particle generator, the bubble liquid flow channel is connected with the bubble liquid interface and the ejection port; the air flow channel is connected with the ejection port; the gas flow channel is connected with the gas interface and the ejection port; Wherein, an air pipe is provided on the air interface, one end of the air pipe extends into the air flow channel, and the other end of the air pipe is connected to the air module.

2. The tracer particle generator according to claim 1, characterized in that: The air interface and the bubble liquid interface are arranged at preset angles along the circumference of the tracer particle generator body; wherein the preset angle is 0 to 10 degrees.

3. The tracer particle generator according to claim 1, characterized in that: The tracer particle generator body comprises: case; A central axis tube is located in the shell, and the air flow channel is formed between the outer wall surface of the central axis tube and the inner wall surface of the shell; The inner tube is located inside the central axis tube, the bubble liquid flow channel is formed between the inner wall surface of the central axis tube and the outer wall surface of the inner tube, and the inner wall surface of the inner tube forms the gas flow channel.

4. The tracer particle generator according to claim 3, characterized in that: The ejection port, the bubble liquid interface, and the air interface are arranged on the shell.

5. The tracer particle generator according to claim 3, characterized in that: The shell is provided with an opening. When the central axis tube is located in the shell, one end of the central axis tube extends out through the opening to match with the gas interface.

6. The tracer particle generator according to claim 3, characterized in that: A clamping portion communicating with the bubble liquid flow channel and the gas interface is provided in the central axis tube, and one end of the inner tube is clamped in the clamping portion.

7. The tracer particle generator according to claim 4 or 6, characterized in that: The tracer particle generator also includes: At least one fixing member is disposed in the bubble liquid flow channel and is used to fix the inner tube.

8. The tracer particle generator according to claim 7, characterized in that: The fixing piece is sleeved on the inner tube, and a plurality of protrusions are arranged at intervals on the outer wall surface of the fixing piece, and the protrusions abut against the inner wall surface of the central axis tube.

9. The tracer particle generator according to claim 1, characterized in that: The tracer particle generator body has an olive shape.

10. A tracer particle generation system, characterized in that: The tracer particle generating system includes, in addition to the tracer particle generator according to any one of claims 1 to 9, further comprising: an infusion device, connected to the bubble liquid interface, and used for delivering the bubble liquid into the bubble liquid flow channel; A gas module, connected to the gas interface, for delivering gas into the gas flow channel; An air module is communicated with the air pipe and is used for conveying air into the air flow channel.

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