A measurement device and a measurement method for a gas jet in a two-phase flow environment

Abstract

The invention discloses a measuring device and a measuring method for a gas jet in a two-phase flow environment, comprising a rectangular water tank upper cover, a rectangular water tank body, an excitation end metal electrode wire, a receiving end metal electrode wire, a receiving end port, a water tank upper cover through hole, a water tank upper cover blind hole, an exhaust port, a water tank side blind hole, an excitation end port, a water tank side through hole, and an air injection port. The excitation end metal electrode wire and the receiving end metal electrode wire respectively pass through the water tank side through hole and the water tank upper cover through hole, are wound around screws at the water tank side blind hole and the water tank upper cover blind hole, and are orthogonally connected inside the rectangular water tank body; the excitation end metal electrode wire and the receiving end metal electrode wire are respectively connected to the excitation end port and the receiving end port after being fixed; the rectangular water tank upper cover is sealed with a sealant between the rectangular water tank body after the wire mesh probe is arranged; the receiving end port and the excitation end port are respectively led to the signal circuit by a wire; the air injection port is arranged on the lower side of the rectangular water tank body; the exhaust port is arranged on the rectangular water tank upper cover.

Description

Technical Field

[0001] The invention relates to the technical field of multiphase flow parameter measurement, and in particular to a measuring device and a measuring method for a gas jet in a two-phase flow environment. Background Art

[0002] Nuclear energy is a clean energy with broad application prospects. In the development and utilization of nuclear energy, safety issues are important issues that must be addressed. In the fourth-generation lead-bismuth nuclear reactor, steam generator rupture accidents are one of the common accidents, which leads to strong energy and mass transfer between the cold and hot fluids of the first and second loops, resulting in a large amount of water vapor. At the same time, a shock wave or jet will be formed at the rupture location. Under the influence of the jet, the steam is very likely to cavitate the main pump or cause the core heat transfer to deteriorate, bringing serious safety hazards.

[0003] At present, due to the lack of measurement methods for the dynamic characteristics of gas after the jet, the research on gas jets is very limited. Commonly used measurement methods are non-contact optical methods, including high-speed camera technology and ray technology, but the optical method will be affected by the refractive index, especially when encountering opaque or ray-absorbing media, the optical method is no longer applicable; and the optical method can usually only obtain qualitative results. On the other hand, the probe technology based on electrical methods can accurately measure the gas-liquid two-phase flow characteristics, but due to the fast speed and wide spatial distribution range of gas jets, most of the existing probe technologies are developed based on the principle of single-point local measurement, and it is difficult to capture the spatial distribution of the jet gas phase with high resolution. Therefore, it is necessary to redesign the probe to make it suitable for the study of gas jets in two-phase flow environments. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a measuring device and method for a gas jet in a two-phase flow environment, which can quantitatively obtain the phase distribution of the gas jet during its movement into the water space, thereby realizing real-time and accurate measurement of the gas phase under jet conditions.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted to solve the technical problem is as follows:

[0006] The invention discloses a measuring device for a gas jet in a two-phase flow environment, wherein the gas of the measuring device is ejected upward from the bottom, and the measuring device comprises a rectangular water tank upper cover, a rectangular water tank body, an excitation end metal electrode wire, a receiving end metal electrode wire, a receiving end port, a plurality of water tank upper cover through holes, a plurality of water tank upper cover blind holes, an exhaust port, a plurality of water tank side blind holes, an excitation end port, a plurality of water tank side through holes, and a gas injection port, wherein:

[0007] The excitation end metal electrode wire and the receiving end metal electrode wire are respectively passed through a plurality of the through holes on the side of the water tank and the through holes on the top cover of the water tank, and then wound around the screws at a plurality of the blind holes on the side of the water tank and the blind holes on the top cover of the water tank, and are orthogonally connected inside the rectangular water tank body, so as to realize the straightening of the excitation end metal electrode wire and the receiving end metal electrode wire;

[0008] After the excitation end metal electrode wire and the receiving end metal electrode wire are fixed, they are connected to the corresponding excitation end port and receiving end port respectively to form the two poles of the wire mesh probe signal transmission;

[0009] After the wire mesh probe is arranged, the upper cover of the rectangular water tank is sealed with the rectangular water tank body with sealant, and several through holes on the upper cover of the water tank and through holes on the side of the water tank are sealed with sealant to ensure the structural stability and sealing of the measuring device;

[0010] The receiving end port and the excitation end port are respectively led out to the signal circuit by wires, so as to realize the transmission and reception of the wire mesh probe signal;

[0011] The air injection port is arranged on the lower side of the rectangular water tank body;

[0012] The exhaust port is arranged on the top cover of the rectangular water tank, which is not sealed in the initial state and is sealed and fixed after the installation is completed.

[0013] Furthermore, several of the through holes on the top cover of the water tank and the through holes on the side of the water tank are coaxially corresponding to the centers of several of the blind holes on the top cover of the water tank and the blind holes on the side of the water tank, respectively, the diameters of several of the blind holes on the top cover of the water tank and the blind holes on the side of the water tank are respectively larger than the diameters of several of the through holes on the top cover of the water tank and the through holes on the side of the water tank, and the thicknesses of several of the blind holes on the top cover of the water tank and the blind holes on the side of the water tank are both half the thickness of the rectangular water tank body.

[0014] Furthermore, the diameters of the plurality of through holes on the side of the water tank and the through holes on the top cover of the water tank are respectively larger than the diameters of the metal electrode wire at the excitation end and the metal electrode wire at the receiving end.

[0015] Furthermore, the air injection port is sealed using sealant from the outside of the rectangular water tank body.

[0016] Preferably, the spacing between several of the through holes on the side of the water tank is 2-4mm, and the diameter of the through holes on the side of the water tank is 0.5mm; and / or, the spacing between several of the through holes on the top cover of the water tank is 2-4mm, and the diameter of the through holes on the top cover of the water tank is 0.5mm.

[0017] Preferably, the spacing between the excitation end metal electrode wire and the receiving end metal electrode wire is 2-4 mm.

[0018] The present invention also discloses a method for measuring a gas jet in a two-phase flow environment, wherein the measurement is performed using the above-mentioned measuring device, and the method at least comprises the following steps:

[0019] Step 1: Pass the excitation end metal electrode wire and the receiving end metal electrode wire through several water tank side through holes and water tank top cover through holes respectively, and then wrap them around the screws at several water tank side blind holes and water tank top cover blind holes, and orthogonally connect them inside the rectangular water tank body, and connect them to the corresponding excitation end port and receiving end port;

[0020] Step 2: Install the nozzle at the air injection port and seal the rectangular water tank body;

[0021] Step 3: Obtain the calibration base value of the measuring device;

[0022] Step 4: While injecting gas into the bottom nozzle, a signal is excited to the metal electrode wire at the excitation end;

[0023] Step 5: The metal electrode wire at the receiving end receives the detected induced electrical signal;

[0024] Step 6: Obtain the gas phase distribution of the jet process based on the electrical signal of the calibrated base value and the measured value.

[0025] Furthermore, in step 3, obtaining the calibration base value of the measuring device includes:

[0026] The received electrical signal value of the measuring device is measured when the measuring device is in a pure water state and does not spray airflow.

[0027] Furthermore, before measuring the gas jet phase distribution, the rectangular water tank is filled with water, and then the acquisition process is maintained at a specified number of frames for signal acquisition. The acquired signal is the received electrical signal value measured in the pure water state, which is regarded as the calibration base value;

[0028] The calibration method is linear calibration, and the calibration formula is as follows:

[0029]

[0030] Where: α is the gas content value at the measurement node; i is the number of rows at the excitation end; j is the number of columns at the receiving end; k is the number of frames collected; I exp,i,j,k is the signal current value collected during the formal test, A; I water,i,j,k is the calibration value of the signal current under the initial pure water condition.

[0031] Furthermore, the method further comprises the following steps:

[0032] By adjusting the distance between the gas injection port and the wire mesh probe or arranging another set of the same wire mesh probe behind the wire mesh probe, the velocity distribution of the airflow in space after being ejected can be obtained by cross-correlating the two sets of data.

[0033] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0034] 1. The measuring device provided in this application is suitable for measuring gas jets in a two-phase flow environment. It can quantitatively obtain the phase distribution of the gas jet during its movement into the water space, and realizes real-time and accurate measurement of the gas phase under the jet condition. It does not require cumbersome operations, and only requires connecting the circuit to realize signal acquisition of the gas jet.

[0035] 2. The present invention has a simple structure, can meet the measurement requirements of gas phase distribution under jet conditions, is easy to operate and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0037] Figure 1 It is a three-dimensional schematic diagram of the overall structure of a measuring device for a gas jet in a two-phase flow environment according to the present invention;

[0038] Figure 2 It is a front view of the overall structure of a measuring device for a gas jet in a two-phase flow environment of the present invention;

[0039] Figure 3 The invention discloses an imaging diagram of test results of a device for measuring a gas jet in a two-phase flow environment and a comparison thereof with a high-speed photography visualization image.

[0040]

Explanation of main symbols

[0041] 1-Rectangular water tank upper cover;

[0042] 2-Rectangular water tank body;

[0043] 3-excitation end metal electrode wire;

[0044] 4-receiving end metal electrode wire;

[0045] 5-receiving port;

[0046] 6-Through hole on the top cover of the water tank;

[0047] 7-Blind hole on the top cover of the water tank;

[0048] 8- Exhaust port;

[0049] 9-Blind hole on the side of the water tank;

[0050] 10-excitation port;

[0051] 11-Through hole on the side of the water tank;

[0052] 12-Gas injection port. DETAILED DESCRIPTION

[0053] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Embodiment 1

[0057] like Figure 1 and 2 As shown, the present invention discloses a measuring device for gas jet in a two-phase flow environment, wherein the gas of the measuring device is ejected upward from the bottom, and the measuring device comprises a rectangular water tank upper cover 1, a rectangular water tank body 2, an excitation end metal electrode wire 3, a receiving end metal electrode wire 4, a receiving end port 5, a plurality of water tank upper cover through holes 6, a plurality of water tank upper cover blind holes 7, an exhaust port 8, a plurality of water tank side blind holes 9, an excitation end port 10, a plurality of water tank side through holes 11, and a gas injection port 12, wherein:

[0058] The excitation end metal electrode wire 3 and the receiving end metal electrode wire 4 are respectively passed through a plurality of the water tank side through holes 11 and the water tank top cover through holes 6, and then are wound around a plurality of the water tank side blind holes 9 and the water tank top cover blind holes 7 screws, and are orthogonally connected inside the rectangular water tank body 2, so as to realize the straightening of the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4;

[0059] After the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4 are fixed, they are connected to the corresponding excitation end port 10 and the receiving end port 5 respectively to form the two poles of the wire mesh probe signal transmission;

[0060] After the wire mesh probe is arranged, the upper cover 1 of the rectangular water tank is sealed with the rectangular water tank body 2 by sealant, and several through holes 6 of the upper cover of the water tank and through holes 11 on the side of the water tank are sealed by sealant to ensure the structural stability and sealing of the measuring device;

[0061] The receiving end port 5 and the excitation end port 10 are respectively led out to the signal circuit by wires, so as to realize the transmission and reception of the wire mesh probe signal;

[0062] The air injection port 12 is arranged on the lower side of the rectangular water tank body 2, at a suitable distance from the wire mesh probe;

[0063] The exhaust port 8 is arranged on the top cover of the rectangular water tank, which is not sealed in the initial state and is sealed and fixed after the installation is completed.

[0064] Further, the plurality of through holes 6 on the water tank cover and the through holes 11 on the side of the water tank correspond to the centers of the plurality of blind holes 7 on the water tank cover and the blind holes 9 on the side of the water tank, respectively, the diameters of the plurality of blind holes 7 on the water tank cover and the blind holes 9 on the side of the water tank are respectively larger than the diameters of the plurality of through holes 6 on the water tank cover and the blind holes 11 on the side of the water tank, the thicknesses of the plurality of blind holes 7 on the water tank cover and the blind holes 9 on the side of the water tank are half the thickness of the rectangular water tank body 2, and screws are installed on the plurality of blind holes 7 on the water tank cover and the blind holes 9 on the side of the water tank. In this embodiment, the number of the plurality of through holes 6 on the water tank cover and the through holes 11 on the side of the water tank, and the number of the blind holes 7 on the water tank cover and the blind holes 9 on the side of the water tank is 64.

[0065] Furthermore, the diameters of the plurality of water tank side through holes 11 and the water tank top cover through holes 6 are respectively slightly larger than the diameters of the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4 .

[0066] Furthermore, the air injection port 12 is sealed from the outside of the rectangular water tank body 2 using a sealant.

[0067] In this embodiment, the spacing between the plurality of through holes 11 on the side of the water tank is 2-4 mm, and the diameter of the through holes 11 on the side of the water tank is 0.5 mm; and / or, the spacing between the plurality of through holes 6 on the top cover of the water tank is 2-4 mm, and the diameter of the through holes 6 on the top cover of the water tank is 0.5 mm. In order to obtain the best measurement data, the spacing between the plurality of through holes 11 on the side of the water tank is preferably 2 mm, and correspondingly, the spacing between the plurality of through holes 6 on the top cover of the water tank is preferably 2 mm.

[0068] In this embodiment, the distance between the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4 is 2-4 mm. Preferably, the distance between the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4 is 2 mm.

[0069] Preferably, the size of the rectangular water tank can be adjusted according to actual needs, the distance between the gas injection port 12 and the wire mesh probe can also be adjusted according to actual needs, and the number of the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4 can also be adjusted according to actual needs, but the number is generally a multiple of 16.

[0070] Embodiment 2

[0071] The present invention also discloses a method for measuring a gas jet in a two-phase flow environment, wherein the measurement is performed using the above-mentioned measuring device, and the method at least comprises the following steps:

[0072] Step 1: Pass the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4 through several water tank side through holes 11 and water tank top cover through holes 6 respectively, and then wind them around the screws at several water tank side blind holes 9 and water tank top cover blind holes 7, and orthogonally connect them inside the rectangular water tank body 2, and connect them to the corresponding excitation end port 10 and receiving end port 5;

[0073] Step 2: Install a nozzle at the air injection port 12 and seal the rectangular water tank body 2;

[0074] Step 3: Obtain the calibration base value of the measuring device;

[0075] Step 4: while injecting gas into the bottom nozzle, a signal is excited to the metal electrode wire 3 at the exciting end;

[0076] Step 5: The receiving end metal electrode wire 4 receives the detected induced electrical signal;

[0077] Step 6: Obtain the gas phase distribution of the jet process based on the electrical signal of the calibrated base value and the measured value.

[0078] Furthermore, in step 3, obtaining the calibration base value of the measuring device includes:

[0079] The received electrical signal value of the measuring device is measured when the measuring device is in a pure water state and does not spray airflow.

[0080] Furthermore, the method further comprises the following steps:

[0081] By adjusting the distance between the gas injection port 12 and the wire mesh probe or arranging another set of the same wire mesh probe behind the wire mesh probe, the velocity distribution of the airflow in space after being ejected can be obtained by cross-correlating the two sets of data.

[0082] The present application is further elaborated in the following in combination with the operating principle of the screen probe.

[0083] (1) Circuit working principle: Since there is a certain distance between the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4, a number of orthogonal spatial nodes are formed between the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4 in this example. When an electrical signal is excited at the excitation end port 10, the gas-liquid two-phase flow formed by gas and water will occupy the space between the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4, thereby realizing the connection of the circuit between the excitation end metal electrode wire 3 and the receiving end metal electrode wire 4 and forming a loop that allows current to pass. According to the different electrical conductivities of air and water, the resistance value in the loop changes, and the current will change accordingly with the different distribution of gas and water phases when flowing through the wire mesh.

[0084] The excitation end metal electrode wire 3 is excited in sequence, and then in the receiving end metal electrode wire 4, each row of the excitation end metal electrode wire 3 corresponding to the node formed by the receiving end metal electrode wire 4 will generate a column of current signal values ​​with different values ​​in sequence due to different electrical conductivities, and the received column of electrical signals is stored in the computer through the receiving end port 5. After the excitation end metal electrode wire 3 is excited in sequence, the receiving end can receive the electrical signal values ​​at all nodes in this time frame. At this point, the signal excitation and induction acquisition process of one frame is completed. The number of frames for collecting data can be adjusted as needed.

[0085] (2) Calibration of base value: Before measuring the gas jet phase distribution, fill the rectangular water tank with water, and then keep the acquisition process at a specified frame number for signal acquisition. The acquired signal is the received electrical signal value measured under pure water conditions, which is regarded as the calibration base value.

[0086] The calibration method is linear calibration, and the calibration formula is as follows:

[0087]

[0088] Where: α is the gas content value at the measurement node; i is the number of rows at the excitation end; j is the number of columns at the receiving end; k is the number of frames collected; I exp,i,j,k is the signal current value collected during the formal test, A; I water,i,j,k is the calibration value of the signal current under the initial pure water condition.

[0089] (3) Substituting the current signal value received by the measuring device in the formal experiment and the calibration base signal into the linear calibration formula and comparing them frame by frame, the distribution information of the gas phase during the acquisition time period can be obtained, such as Figure 3 shown.

[0090] In this embodiment, specific examples are used to illustrate the inventive concept in detail, and the description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, any obvious modifications, equivalent substitutions or other improvements made without departing from the inventive concept should be included in the protection scope of the present invention.

[0091] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are considered to be exemplary only, and the true scope and spirit of the present application are indicated by the above-mentioned claims.

[0092] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

[0093] It should be understood that the "several" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0094] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0095] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A measuring device for a gas jet in a two-phase flow environment, wherein the gas in the measuring device is ejected upward from the bottom, characterized in that: The measuring device comprises a rectangular water tank upper cover, a rectangular water tank body, an excitation end metal electrode wire, a receiving end metal electrode wire, a receiving end port, a plurality of water tank upper cover through holes, a plurality of water tank upper cover blind holes, an exhaust port, a plurality of water tank side blind holes, an excitation end port, a plurality of water tank side through holes, and an air injection port, wherein: The excitation end metal electrode wire and the receiving end metal electrode wire are respectively passed through a plurality of the through holes on the side of the water tank and the through holes on the top cover of the water tank, and then wound around the screws at a plurality of the blind holes on the side of the water tank and the blind holes on the top cover of the water tank, and are orthogonally connected inside the rectangular water tank body, so as to realize the straightening of the excitation end metal electrode wire and the receiving end metal electrode wire; After the excitation end metal electrode wire and the receiving end metal electrode wire are fixed, they are connected to the corresponding excitation end port and receiving end port respectively to form the two poles of the wire mesh probe signal transmission; After the wire mesh probe is arranged, the upper cover of the rectangular water tank is sealed with the rectangular water tank body with sealant, and several through holes on the upper cover of the water tank and through holes on the side of the water tank are sealed with sealant to ensure the structural stability and sealing of the measuring device; The receiving end port and the excitation end port are respectively led out to the signal circuit by wires, so as to realize the transmission and reception of the wire mesh probe signal; The air injection port is arranged on the lower side of the rectangular water tank body; The exhaust port is arranged on the upper cover of the rectangular water tank, is not sealed in the initial state, and is sealed and fixed after the installation is completed.

2. A device for measuring gas jet in a two-phase flow environment according to claim 1, characterized in that: Several of the through holes on the top cover of the water tank and the through holes on the side of the water tank are coaxially corresponding to the centers of the several blind holes on the top cover of the water tank and the blind holes on the side of the water tank, respectively. The diameters of the several blind holes on the top cover of the water tank and the blind holes on the side of the water tank are respectively larger than the diameters of the several through holes on the top cover of the water tank and the through holes on the side of the water tank, and the thicknesses of the several blind holes on the top cover of the water tank and the blind holes on the side of the water tank are both half of the thickness of the rectangular water tank body.

3. The device for measuring gas jet in a two-phase flow environment according to claim 1, characterized in that: The diameters of the plurality of through holes on the side of the water tank and the through holes on the top cover of the water tank are respectively larger than the diameters of the metal electrode wire at the excitation end and the metal electrode wire at the receiving end.

4. The device for measuring gas jet in a two-phase flow environment according to claim 1, characterized in that: The air injection port is sealed from the outside of the rectangular water tank body using a sealant.

5. The device for measuring gas jet in a two-phase flow environment according to claim 1, characterized in that: The spacing between several of the through holes on the side of the water tank is 2-4mm, and the diameter of the through holes on the side of the water tank is 0.5mm; and / or, the spacing between several of the through holes on the top cover of the water tank is 2-4mm, and the diameter of the through holes on the top cover of the water tank is 0.5mm.

6. The device for measuring gas jet in a two-phase flow environment according to claim 1, characterized in that: The distance between the excitation end metal electrode wire and the receiving end metal electrode wire is 2-4 mm.

7. A method for measuring a gas jet in a two-phase flow environment, characterized in that: The measurement is performed using a measuring device as shown in any one of claims 1 to 6, comprising at least the following steps: Step 1: Pass the excitation end metal electrode wire and the receiving end metal electrode wire through several water tank side through holes and water tank top cover through holes respectively, and then wrap them around the screws at several water tank side blind holes and water tank top cover blind holes, and orthogonally connect them inside the rectangular water tank body, and connect them to the corresponding excitation end port and receiving end port; Step 2: Install the nozzle at the air injection port and seal the rectangular water tank body; Step 3: Obtain the calibration base value of the measuring device; Step 4: While injecting gas into the bottom nozzle, a signal is excited to the metal electrode wire at the excitation end; Step 5: The metal electrode wire at the receiving end receives the detected induced electrical signal; Step 6: Obtain the gas phase distribution of the jet process based on the electrical signal of the calibrated base value and the measured value.

8. A method for measuring a gas jet in a two-phase flow environment according to claim 7, characterized in that: In step 3, obtaining the calibration base value of the measuring device includes: The received electrical signal value of the measuring device is measured when the measuring device is in a pure water state and does not spray airflow.

9. A method for measuring a gas jet in a two-phase flow environment according to claim 8, characterized in that: Before measuring the gas jet phase distribution, fill the rectangular water tank with water, and then keep the acquisition process at a specified number of frames for signal acquisition. The acquired signal is the received electrical signal value measured in the pure water state, which is regarded as the calibration base value. The calibration method is linear calibration, and the calibration formula is as follows: Where: α is the gas content value at the measurement node; i is the number of rows at the excitation end; j is the number of columns at the receiving end; k is the number of frames collected; I exp,i,j,k is the signal current value collected during the formal test, A; I water,i,j,k is the calibration value of the signal current under the initial pure water condition.

10. The method for measuring a gas jet in a two-phase flow environment according to claim 7, characterized in that: The method further comprises the following steps: By adjusting the distance between the gas injection port and the wire mesh probe or arranging another set of the same wire mesh probe behind the wire mesh probe, the velocity distribution of the airflow in space after being ejected can be obtained by cross-correlating the two sets of data.

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