CN114420326A - Fluid mixing testing device and testing method - Google Patents

Abstract

The present invention provides a fluid mixing test device and a test method. The device includes a first fluid system for providing a first fluid, controlling preset parameters of the first fluid, and recovering the mixed fluid; the second a fluid system, used for providing a second fluid, controlling preset parameters of the second fluid, and recovering the mixed fluid; a mixing system, respectively connected to the first fluid system and the second fluid system, using for providing a preset mixing mode and mixing space of the first fluid and the second fluid; a test system, connected to the mixing system, for testing the fluids in the mixing space and placing them in the mixing space The temperature data of the solid part is collected and processed; wherein the temperature of the first fluid is different from the temperature of the second fluid. The invention can objectively and effectively analyze the temperature fluctuation characteristics when fluids of different temperatures are mixed and their influence on solid parts.

Description

Fluid mixing test device and test method

technical field

The invention relates to the technical field of liquid mixing testing, in particular to a fluid mixing testing device and a testing method.

Background technique

A nuclear reactor operates by heating water (or other media) into steam through a large amount of thermal energy generated by the nuclear fission process to drive a steam turbine to generate electricity. The core, as a key core component, consists of fuel assemblies and control rod assemblies arranged in a core frame with a certain grid. Due to the particularity of the core assembly structure, the number of fuel assemblies distributed around the control rod assembly is large, and the distances are different, resulting in different temperatures of the coolant at the core outlet. The hot and cold fluids mix with each other in the form of jets and plumes, causing the fluid temperature in the region to change repeatedly, that is, thermal oscillations. The fluid temperature fluctuation acts on the surface of the solid structure through thermal conduction and thermal convection, thereby causing the temperature fluctuation of the structure and finally the stress fluctuation of the structure. Due to the structural characteristics of the reactor, temperature fluctuations caused by this hot and cold fluid are unavoidable. In the temperature fluctuation region, the solid components are affected by the fluid to generate alternating thermal stress, and there is a risk of thermal fatigue during long-term operation, and even lead to crack penetration, which eventually leads to leakage accidents.

Therefore, the present invention provides a fluid mixing test device, which is important for analyzing the action mechanism of fluid thermal oscillation, studying the influence of fluid thermal oscillation on the reliability of solid components, improving the reliability of nuclear power equipment, and rationally designing and operating nuclear power equipment safely. significance.

SUMMARY OF THE INVENTION

The invention provides a fluid mixing test device and a test method, which are used to study the action mechanism of fluid thermal oscillation and its influence on the reliability of solid components, so as to avoid the problem of thermal fatigue of components during application.

In a first aspect, the present invention provides a fluid mixing test device, the device comprising:

a first fluid system for providing a first fluid, controlling preset parameters of the first fluid, and recovering the mixed fluid;

a second fluid system for providing a second fluid, controlling preset parameters of the second fluid, and recovering the mixed fluid;

a mixing system, connected to the first fluid system and the second fluid system respectively, for providing a preset mixing manner and mixing space of the first fluid and the second fluid;

a testing system, connected to the mixing system, for collecting and processing temperature data of the fluid in the mixing space and the solid components placed in the mixing space;

Wherein, the temperature of the first fluid is different from the temperature of the second fluid.

In an embodiment of the present invention, the first fluid system includes:

The first inlet valve is used to control the inflow of fluid;

a first electrically heated constant temperature water tank, connected to the first liquid inlet valve, for controlling the temperature parameter of the fluid to obtain the first fluid;

a first valve, connected to the first electrically heated constant temperature water tank, for controlling the outflow of the first fluid from the first electrically heated constant temperature water tank;

a first booster pump, connected to the first valve, for increasing the flow rate of the first fluid;

a first flow meter, connected to the first booster pump, for calculating the flow rate parameter of the first fluid;

a second valve, one end of which is connected to the first flow meter and the other end is connected to the mixing system, for controlling the speed of the first fluid flowing into the mixing system;

a first liquid storage tank, connected with the mixing system, for storing the liquid flowing out from the mixing system;

a first liquid discharge valve, one end of which is connected to the first liquid storage tank, and the other end is connected to the first electrically heated constant temperature water tank, for controlling the outflow of liquid from the first liquid storage tank;

Wherein, the first fluid system is connected by a pipeline, the outside of the pipeline is covered with a thermal insulation layer, and the preset parameters of the first fluid include a temperature parameter and a flow velocity parameter.

In an embodiment of the present invention, the second fluid system includes:

The second liquid inlet valve is used to control the inflow of fluid;

a second electrically heated thermostatic water tank, connected to the second liquid inlet valve, for controlling the temperature parameter of the fluid to obtain the second fluid;

a third valve, connected to the second electrically heated constant temperature water tank, for controlling the flow of the second fluid from the second electrically heated constant temperature water tank;

a second booster pump, connected to the third valve, for increasing the flow rate of the second fluid;

a second flow meter, connected to the second booster pump, for calculating the flow rate parameter of the second fluid;

a fourth valve, one end of which is connected to the second flow meter and the other end is connected to the mixing system, for controlling the speed of the second fluid flowing into the mixing system;

a second liquid storage tank, connected with the mixing system, for storing the liquid flowing out of the mixing system;

A second liquid discharge valve, one end of which is connected to the second liquid storage tank, and the other end is connected to the second electrically heated constant temperature water tank, for controlling the outflow of the liquid from the second liquid storage tank;

Wherein, the second fluid system is connected by a pipeline, the outside of the pipeline is wrapped with a thermal insulation layer, and the preset parameters of the second fluid include a temperature parameter and a flow velocity parameter.

In an embodiment of the present invention, the mixing system includes:

an inlet section, the inlet ends of which are respectively connected with the first fluid system and the second fluid system, for providing a preset mixing manner for the first fluid and the second fluid;

The bottom of the mixing box is connected with the outlet end of the inlet section, the upper end of which is provided with a first outlet port and a second outlet port, the first outlet port is connected with the first fluid system, and the second outlet port connected with the second fluid system for providing a mixing space for the first fluid and the second fluid;

The third liquid discharge valve is connected to the bottom of the mixing box and is used to control the discharge of the fluid in the mixing box.

In an embodiment of the present invention, the inlet section is a first inlet section or a second inlet section:

The first inlet section takes the second flow channel corresponding to the second fluid at the second fluid inlet as the central axis, and the first flow channel corresponding to the first fluid at the first fluid inlet wraps the fluid at a preset interval distance. The second flow channel is described to form the first mixing mode;

The second inlet section takes the second flow channel corresponding to the second fluid at the second fluid inlet as the central axis, and the two sides of the second flow channel are the first flow channels corresponding to the first fluid, respectively. constitute the second mixing mode;

Wherein, the shown preset mixing manner includes the first mixing manner and the second mixing manner.

In an embodiment of the present invention, the plane of the outlet end of the inlet section is higher than the plane of the bottom in the mixing box.

In an embodiment of the present invention, the testing system includes:

a rack including a first rack for placing a first part and a second rack for placing a second part, the first rack and the second rack being located within the mixing box, the second part having preset thickness;

a temperature sensor comprising at least one first temperature sensor, at least one second temperature sensor and at least one third temperature sensor, the first temperature sensor being located at the outlet of the inlet section, for detecting the first fluid respectively and the temperature of the second fluid; the second temperature sensor is fixed on the first part for detecting the temperature of the mixed fluid; the third temperature sensor is located on the upper and lower surfaces of the second part for detecting the surface temperature of the second part;

a data acquisition instrument, which is respectively connected with the first temperature sensor, the second temperature sensor and the third temperature sensor, and is used for collecting temperature data of the temperature sensor;

A data processing device, which is connected with the data acquisition instrument, is used for processing the data sent by the data acquisition instrument.

In an embodiment of the present invention, the first bracket is provided with a positioning hole for positioning the first component and adjusting the height of the first component, and the second bracket is provided with a positioning hole for positioning the second component and adjusting the height of the first component. A positioning groove for adjusting the height of the second part.

In an embodiment of the present invention, the data processing device is further used for:

Draw a temperature-time curve according to the temperature data of the temperature sensor collected by the data acquisition instrument, and calculate the temperature mean value, peak-peak value and standard deviation of different measurement points, so as to obtain the temperature distribution and temperature fluctuation data at different positions ;

Wherein, the expression for calculating the temperature average value is: T _avg =∑T _i /N, T _avg represents the temperature average value, T _i represents the instantaneous temperature data, i represents the ith temperature data, and N represents the total number of temperature data;

Wherein, the expression for calculating the peak-to-peak value is: T _PP =T _max -T _min , T _PP represents the temperature peak-to-peak value, T _max represents the maximum temperature data, and T _min represents the minimum temperature data;

Wherein, the expression for calculating the standard deviation value is:

T_σ表示标准差值。

_Tσ represents the standard deviation value.

In an embodiment of the present invention, the data processing device is further used for:

According to the temperature data of the upper and lower surfaces of the second part collected by the data acquisition instrument, calculate the average temperature decay value of the second part under different thicknesses;

Wherein, the expression for calculating the average temperature decay value is:

表示上表面的瞬时温度数据，

表示下表面的瞬时温度数据。a _avg represents the average temperature decay value, i represents the ith temperature data, N represents the total number of temperature data,

represents the instantaneous temperature data of the upper surface,

Indicates the instantaneous temperature data of the lower surface.

In an embodiment of the present invention, the data processing device is further used for:

Perform fast Fourier transform on the data collected by the data acquisition instrument to obtain the real part and the imaginary part under the corresponding frequency, and calculate the corresponding amplitude and power spectral density according to the real part and the imaginary part;

The amplitude-frequency curve and the power spectral density-frequency curve of temperature are plotted according to the amplitude and the power spectral density, so as to obtain frequency distribution data of temperature fluctuation.

Re表示实部，Im表示虚部，A表示幅值，n表示数据总数；Wherein, the expression for calculating the amplitude (single sideband) is:

Re represents the real part, Im represents the imaginary part, A represents the amplitude, and n represents the total number of data;

Wherein, the expression for calculating the power spectral density (single sideband) is: PSD=2Δt·(Re ² +Im ² )/n, n=1, 2...n/2-1, PSD represents the power spectrum Density, Δt is the sampling time interval, and n is the total number of data.

In a second aspect, the present invention also provides a test method based on the fluid mixing test device described in any one of the first aspects, the method comprising:

providing a first fluid and a second fluid having different temperatures;

adjusting the flow rates of the first fluid and the second fluid;

Detect the temperature of the first fluid and the second fluid that reach the preset flow rate before mixing, the temperature of the first fluid and the second fluid when mixing, and the temperature of the second component. , to get the corresponding temperature data;

The temperature data is processed to obtain analytical data for fluid temperature fluctuations and resulting second component temperature fluctuations.

In an embodiment of the present invention, the providing the first fluid and the second fluid with different temperatures includes:

Open the first liquid inlet valve and the second liquid inlet valve, and inject the circulatable liquid into the first electric heating thermostatic water tank and the second electric heating thermostatic water tank respectively;

The first electrically heated constant temperature water tank and the second electrically heated constant temperature water tank are opened, and the circulatable liquid is heated to a preset temperature to obtain corresponding first fluid and second fluid. A fluid and the second fluid have different temperatures.

In an embodiment of the present invention, the adjusting the flow rates of the first fluid and the second fluid includes:

Open the first valve and the third valve, and open the first booster pump and the second booster pump, so that the first fluid and the second fluid are respectively discharged from the corresponding first electric heating constant temperature water tank and the The second electric heating constant temperature water tank flows out;

The second valve and the fourth valve are adjusted so that the first fluid and the second fluid reach a preset flow rate at the outlet of the inlet section.

In an embodiment of the present invention, the temperature of the first fluid and the second fluid that have reached a preset flow rate before being mixed, respectively, the temperature of the first fluid and the second fluid during mixing temperature, the temperature of the second component is detected to obtain corresponding temperature data including:

Place the bracket and temperature sensor in the preset position in advance;

Turn on the data acquisition instrument and set the sampling frequency. After the velocity of the first fluid and the second fluid at the outlet of the inlet section reaches a stable level within a preset time, record the temperature detected by the temperature sensor under different working conditions. The temperature data, the temperature data includes the respective temperature data of the first fluid and the second fluid before mixing, the temperature data of the first fluid and the second fluid when mixing, and the temperature data of the upper and lower surfaces of the second component;

Wherein, the different working conditions include any one or more combinations of the following:

According to adjusting the temperature data of the fluid and/or the second component detected by the temperature sensor at different heights;

temperature data detected by changing the flow rates and temperatures of the first fluid and the second fluid;

According to the detected temperature data of the first fluid and the second fluid in the first mixing mode or the second mixing mode.

In an embodiment of the present invention, before the processing of the temperature data, the method further includes:

closing the second valve and the fourth valve, and stopping the first booster pump and the second booster pump;

Open the first liquid discharge valve and the second liquid discharge valve, so that the fluid of the mixing tank flows back to the first electric heating thermostatic water tank and the second electric heating thermostatic water tank;

Open the third drain valve to drain the mixing tank of fluid.

The fluid mixing testing device and testing method provided by the present invention can collect and process the temperature of the fluid and the surface of the second component by providing the first fluid system, the second fluid system, the mixing system and the testing system. Efficiently analyze the temperature fluctuation characteristics when fluids of different temperatures are mixed and their effect on solid parts.

Description of drawings

In order to explain the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are the For some embodiments of the invention, for those of ordinary skill in the art, other embodiments can also be obtained according to these drawings without creative efforts.

Fig. 1 is the structural representation of the fluid mixing test device provided by the present invention;

2 is one of the structural schematic diagrams of a fluid mixing test device provided by an embodiment of the present invention;

3 is a second schematic structural diagram of a fluid mixing test device provided by an embodiment of the present invention;

4 is a longitudinal schematic diagram of a first inlet section provided by an embodiment of the present invention;

5 is a transverse schematic diagram of a first inlet section provided by an embodiment of the present invention;

6 is a longitudinal schematic diagram of a second inlet section provided by an embodiment of the present invention;

7 is a transverse schematic diagram of a second inlet section provided by an embodiment of the present invention;

8 is a longitudinal schematic diagram of a mixing box provided by an embodiment of the present invention;

FIG. 9 is a transverse schematic diagram of a mixing box provided by an embodiment of the present invention;

10 is a longitudinal schematic diagram of a first bracket provided by an embodiment of the present invention;

FIG. 11 is a transverse schematic diagram of a first bracket provided by an embodiment of the present invention;

12 is a longitudinal schematic diagram of a second bracket provided by an embodiment of the present invention;

FIG. 13 is a transverse schematic diagram of a second bracket provided by an embodiment of the present invention;

Figure 14(a) is a schematic diagram of the instantaneous temperature provided by an embodiment of the present invention;

Figure 14(b) is a schematic diagram of an average temperature provided by an embodiment of the present invention;

Figure 14(c) is a schematic diagram of a power spectral density provided by an embodiment of the present invention;

Figure 15(a) is a schematic diagram of the instantaneous temperature of the upper and lower surfaces of the second component provided by an embodiment of the present invention;

Figure 15(b) is a schematic diagram of the power spectral density of the upper and lower surfaces of the second component provided by an embodiment of the present invention;

16 is a schematic flowchart of a testing method of a fluid mixing testing device provided by an embodiment of the present invention.

Label description:

Fluid Mixing Test Device:

10: First fluid system; 20: Second fluid system; 30: Mixing system; 40: Test system.

First fluid system 10:

101: The first liquid inlet valve; 102: The first electric heating constant temperature water tank; 103: The first valve; 104: The first booster pump; 105: The first flow meter; 106: The second valve; 107: The first liquid storage tank; 108: the first drain valve.

Second fluid system 20:

201: the second liquid inlet valve; 202: the second electric heating constant temperature water tank; 203: the third valve; 204: the second booster pump; 205: the second flow meter; 206: the fourth valve; 207: the second liquid storage Tank; 208: Second drain valve.

Hybrid System 30:

301: Inlet section; 302: Mixing box; 303: Third drain valve;

301-A: first inlet section; 301-B: second inlet section; 301-1: first fluid inlet; 301-2: second fluid inlet; 301-3: first flow channel; 301-4: second 302-1: inlet section interface; 302-2: drain pipe interface; 302-3: first outlet interface; 302-4: second outlet interface; 302-5: support platform.

Measurement System 40:

401: bracket; 402: temperature sensor; 403: data acquisition instrument; 404: data processing equipment;

401-A: first bracket; 401-A-1: positioning hole; 401-A-2: first part; 401-B: second bracket; 401-B-1: positioning groove; 401-B-2: second part.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms "first", "second" and the like in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that the embodiments described herein can be practiced in sequences other than those illustrated or described herein.

The technical terms involved in the present invention are described below:

A fluid is a flowing substance, an object that is continuously deformed by any slight shearing force. Fluid is a general term for liquids and gases.

In order to study the action mechanism of fluid thermal oscillation and its influence on the reliability of solid components, and to improve the reliability of nuclear power equipment to avoid the problem of thermal fatigue of components during application, the fluid mixing test device and test method provided by the present invention can be The first fluid system, the second fluid system, the mixing system and the test system are provided to collect and process the temperature of the fluid and the surface of the solid parts, which can objectively and effectively analyze the temperature fluctuation characteristics when fluids of different temperatures are mixed and its effect on the surface. Effects of solid parts.

Further, the present invention also provides different mixing forms through the mixing system, which is convenient to adjust the height of the temperature sensor in space, measure the temperature of the fluid and the surface of the solid part, and control the temperature of the hot and cold fluids through the first fluid system and the second fluid system. The speed can realize the temperature fluctuation measurement under various working conditions.

The fluid mixing testing device and testing method of the present invention will be described below with reference to FIGS. 1 to 16 .

FIG. 1 is a schematic structural diagram of a fluid mixing test device provided by the present invention, as shown in FIG. 1 . A fluid mixing testing device includes a first fluid system 10 , a second fluid system 20 , a mixing system 30 and a testing system 40 .

Exemplarily, the first fluid system 10 is used to provide the first fluid, control preset parameters of the first fluid, and recover the mixed fluid. The preset parameters of the first fluid include temperature parameters and flow rate parameters.

Exemplarily, the second fluid system 20 is used to provide the second fluid, control preset parameters of the second fluid, and recover the mixed fluid. The preset parameters of the second fluid include temperature parameters and flow rate parameters.

The temperature of the first fluid is different from the temperature of the second fluid, that is, the temperature of the first fluid may be greater than the temperature of the second fluid, or the temperature of the first fluid may be lower than the temperature of the second fluid. For example, the temperature of the first fluid is 40°C and the temperature of the second fluid is 20°C, or the temperature of the first fluid is 20°C and the temperature of the second fluid is 40°C.

Exemplarily, the mixing system 30 is respectively connected with the first fluid system 10 and the second fluid system 20 for providing a preset mixing manner and mixing space of the first fluid and the second fluid. The preset mixing mode can be set according to experimental requirements, and the present invention does not limit the mixing mode.

Illustratively, the testing system 40 is connected to the mixing system 30 for collecting and processing temperature data of fluids within the mixing space and solid components placed within the mixing space. The fluid in the mixing space refers to the fluid obtained by mixing the first fluid and the second fluid.

Exemplarily, the above-mentioned first fluid system 10 and second fluid system 20 are respectively connected by pipes, and the outer layers of the pipes are covered with a thermal insulation layer.

Based on the first fluid system 10, the second fluid system 20, the mixing system 30 and the testing system 40 provided above, the present invention can realize temperature fluctuation measurement under various working conditions, and can objectively and effectively analyze when fluids of different temperatures are mixed. The characteristics of temperature fluctuations and their effects on solid parts.

The first fluid system 10 , the second fluid system 20 , the mixing system 30 , and the testing system 40 will be described in detail below.

FIG. 2 is a schematic structural diagram of a fluid mixing test device provided by an embodiment of the present invention, as shown in FIG. 2 . The first fluid system 10 includes a first liquid inlet valve 101, a first electrically heated thermostatic water tank 102, a first valve 103, a first booster pump 104, a first flow meter 105, a second valve 106, a first liquid storage Tank 107 and first drain valve 108.

The first inlet valve 101 is used to control the inflow of the fluid, which is the fluid that flows in from the outside. The first electrically heated thermostatic water tank 102 is connected to the first liquid inlet valve 101 for controlling the temperature parameters of the fluid to obtain the first fluid. The temperature parameters of the first fluid can be set according to specific experimental requirements. The difference between the first fluid and the fluid flowing through the first inlet valve 101 lies in the difference in temperature.

The first valve 103 is connected to the first electrically heated constant temperature water tank 102 for controlling the first fluid to flow out from the first electrically heated constant temperature water tank 102 . The first booster pump 104 is connected to the first valve 103 for increasing the flow rate of the first fluid. The first flow meter 105 is connected to the first booster pump 104 for calculating the flow rate parameter of the first fluid. One end of the second valve 106 is connected to the first flow meter 105 , and the other end is connected to the mixing system 30 for controlling the flow rate of the first fluid flowing into the mixing system 30 .

The first liquid storage tank 107 is connected to the mixing system 30 for storing the liquid flowing out of the mixing system 30 . One end of the first liquid discharge valve 108 is connected to the first liquid storage tank 107, and the other end is connected to the first electric heating constant temperature water tank 102, and is used to control the outflow of the liquid from the first liquid storage tank 107, so that the liquid from the first liquid storage tank 107 flows out of the first liquid storage tank 107. 107 The liquid flowing out can be recycled.

As shown in FIG. 2 , the second fluid system 20 includes a second liquid inlet valve 201 , a second electrically heated thermostatic water tank 202 , a third valve 203 , a second booster pump 204 , a second flow meter 205 , and a fourth valve 206 , the second liquid storage tank 207 and the second liquid discharge valve 208 .

The second inlet valve 201 is used to control the inflow of the fluid, which is the fluid that flows in from the outside. The second electrically heated constant temperature water tank 202 is connected to the second liquid inlet valve 201 for controlling the temperature parameters of the fluid to obtain the second fluid. The temperature parameters of the second fluid can be set according to specific experimental requirements. The difference between the second fluid and the fluid flowing in through the second inlet valve 201 lies in the difference in temperature. It should be noted that the difference between the second fluid and the first fluid lies in the difference in temperature.

The third valve 203 is connected to the second electrically heated constant temperature water tank 202 for controlling the flow of the second fluid from the second electrically heated constant temperature water tank 202 . The second booster pump 204 is connected to the third valve 203 for increasing the flow rate of the second fluid. The second flow meter 205 is connected to the second booster pump 204 for calculating the flow rate parameter of the second fluid. One end of the fourth valve 206 is connected with the second flow meter 205 , and the other end is connected with the mixing system 30 , and is used for controlling the speed of the second fluid flowing into the mixing system 30 .

The second liquid storage tank 207 is connected to the mixing system 30 for storing the liquid flowing out of the mixing system 30 . One end of the second liquid discharge valve 208 is connected to the second liquid storage tank 207, and the other end is connected to the second electric heating constant temperature water tank 202, and is used to control the outflow of the liquid from the second liquid storage tank 207, so that the liquid from the second liquid storage tank 207 flows out of the second liquid storage tank 207. The liquid flowing out of 207 can be recycled.

FIG. 3 is a second schematic structural diagram of a fluid mixing test device provided by an embodiment of the present invention, as shown in FIG. 3 . The mixing system 30 includes an inlet section 301 , a mixing tank 302 and a third drain valve 303 .

The inlet ends of the inlet section 301 are respectively connected with the first fluid system 10 and the second fluid system 20, for providing a preset mixing manner for the first fluid and the second fluid. The preset mixing manner is the first mixing manner or the second mixing manner.

Illustratively, the inlet section 301 may be a first inlet section 301-A (eg, a coaxial inlet section) or a second inlet section 301-B (eg, a parallel inlet section).

Exemplarily, the schematic diagrams of the first inlet section 301-A are shown in FIG. 4 and FIG. 5 . The first inlet section 301-A corresponds to the second flow channel 301- of the second fluid at the second fluid inlet 301-2. 4 is the central axis, and the first flow channel 301-3 corresponding to the first fluid at the first fluid inlet 301-1 wraps the second flow channel 301-4 at a preset interval to form a first mixing method.

Exemplarily, the schematic diagrams of the second inlet section 301-B are shown in FIG. 6 and FIG. 7 , the second inlet section 301-B is the second flow channel 301- corresponding to the second fluid at the second fluid inlet 301-2. 4 is the central axis, the two sides of the second flow channel 301-4 are the first flow channels 301-3 corresponding to the first fluid, that is to say, the left side of the second flow channel 301-4 is the first flow channel 301-3, The right side is also the first flow channel 301-3 to constitute the second mixing mode.

Exemplarily, as shown in FIGS. 4 and 5 , in the first inlet section 301-A, the outlet size of the first flow channel 301-3 is φ=24.5×32 mm, and the outlet size of the second flow channel 301-4 is φ =10mm.

It should be noted that the preset mixing method described in the present invention is not limited to the first mixing method and the second mixing method provided above, and can also be other mixing methods. For example, the first flow channel 301-3 can also be set in the second mixing method. Around the flow channel 301-4, the number of flow channels may be greater than two.

Exemplarily, as shown in FIG. 8 and FIG. 9 , the bottom of the mixing box 302 is connected to the outlet end of the inlet section 301 (ie, the inlet section interface 302-1), and the upper end thereof is provided with a first outlet interface 302-3 and a second outlet port 302-3. The outlet port 302-4, the first outlet port 302-3 is connected to the first liquid storage tank 107 of the first fluid system 10, the second outlet port 302-4 is connected to the second liquid storage tank 207 of the second fluid system 20, For providing a mixing space for the first fluid and the second fluid, that is, in the mixing space, the first fluid and the second fluid are mixed together.

As shown in FIG. 8 , the mixing box 302 is composed of upper and lower cubic spaces, which are in an inverted “convex” shape. For example, the upper dimension is 340×340×100mm, and the lower dimension is 250×250×100mm. A bracket platform 302-5 for placing brackets is placed at the interfaces of the upper and lower parts. As shown in FIG. 9 , the bottom of the mixing box 302 is further provided with a drain port 302-2. The inlet section interface 302-1 is located at the center of the bottom of the mixing box 302.

Exemplarily, the mixing box 302 may be made of plexiglass, which is convenient for observing the internal fluid, and the shape of the mixing box 302 may also be a cube or a cylinder, and the shape of the mixing box 302 is not limited in the present invention.

Illustratively, the outlet end plane of the inlet section 301 is higher than the bottom plane within the mixing tank 302 to reduce the effect of the tank on the fluid outlet. For example, the outlet end plane of the inlet section 301 is 10 mm higher than the bottom plane inside the mixing box 302 .

As shown in FIG. 3 , the third drain valve 303 is connected to the drain pipe interface 302 - 2 at the bottom of the mixing box, and is used to control the discharge of the fluid in the mixing box 302 .

Exemplarily, the interfaces of the mixing box 302, such as the inlet section interface 302-1, the first outlet interface 302-3, the second outlet interface 302-4 and the drain pipe interface 302-2, can use pipe thread interfaces to facilitate replacement. And to ensure the tightness of the connection, the material of the interface can be metal or non-metal.

As shown in FIG. 3 , the test system 40 includes a stand 401 , a temperature sensor 402 , a data acquisition instrument 403 and a data processing device 404 .

The bracket 401 includes a first bracket 401-A and a second bracket 402-B. The first bracket 401-A is shown in FIGS. 10 and 11 . The second bracket 402-B is shown in FIGS. 12 and 13 . The first bracket 401-A is used to place the first part, and the second bracket 401-B is used to place the second part (ie, the solid part described above). The first bracket 401 -A and the second bracket 401 -B are located on the bracket platform 302 - 5 of the mixing box 302 . The second part is a second part with a specific preset thickness.

Exemplarily, the first bracket 401-A is provided with a plurality of positioning holes 401-A-1, and the positioning holes 401-A-1 are used for positioning the first part 401-A-2 and adjusting the first part 401 - Height of A-2. The second bracket 401-B is provided with a plurality of positioning grooves 401-B-1, and the positioning grooves 401-B-1 are used for positioning the second component 401-B-2 and adjusting the second component 401-B-2 the height of.

For example, positioning holes 401-A-1 with a diameter of φ 1 mm are opened in the first bracket 401-A every 10 mm, and positioning grooves 401-B- with a width of 50 mm and a height of 3 mm are opened in the second bracket 401-B every 10 mm. 1. The width of the first bracket 401-A or the second bracket 401-B is 70mm, which can be used in pairs.

Exemplarily, the first part 401-A-2 can be a thin tungsten steel rod, and the second part 401-B-2 can be a metal flat plate.

The temperature sensor 402 includes at least one first temperature sensor (not shown in the figure), at least one second temperature sensor (not shown in the figure) and at least one third temperature sensor (not shown in the figure).

Exemplarily, a first temperature sensor is placed at the outlet of the inlet section 301 (ie, the inlet section interface 302-1), and a plurality of first temperature sensors may be placed at the outlet of the first fluid and the outlet of the second fluid, respectively, For detecting the temperature of the first fluid and the second fluid respectively.

Exemplarily, at least one second temperature sensor is fixed with the first part 401-A-2 for detecting the temperature of the mixed fluid.

Exemplarily, at least one third temperature sensor is placed on the upper and lower surfaces of the second component 401-B-2 for detecting the surface temperature of the second component. The second part has a preset thickness, for example, the second part 401-B-1 has a series of thicknesses of 0.5mm, 1mm, 1.5mm, and 2mm.

Illustratively, the temperature sensor 402 may be a T-type thermocouple, model TT-T-40, with a diameter of 0.08 mm. Starting from the position corresponding to the center of the second fluid, one measuring point can be arranged at intervals of 5 mm on both sides of the straight line, 13 measuring points in total, and the temperature measurement data can be obtained according to the measuring points.

As shown in FIG. 3 , the data acquisition instrument 403 is respectively connected to the first temperature sensor, the second temperature sensor and the third temperature sensor, and is used to collect temperature data of the temperature sensors. The data processing device 404 is connected to the data acquisition instrument 403 for processing the data sent by the data acquisition instrument 403 . The data processing device 404 may be a computer device.

Exemplarily, the data processing device 404 is also used for:

Draw a temperature-time curve according to the temperature data of the temperature sensor collected by the data acquisition instrument, and calculate the temperature mean value, peak-to-peak value and standard deviation value of different measurement points, so as to obtain the data of temperature distribution and temperature fluctuation at different positions;

Wherein, the expression for calculating the temperature average value is: T _avg =∑T _i /N, T _avg represents the temperature average value, T _i represents the instantaneous temperature data, i represents the ith temperature data, and N represents the total number of temperature data;

Wherein, the expression for calculating the peak-to-peak value is: T _PP =T _max -T _min , T _PP represents the temperature peak-to-peak value, T _max represents the maximum temperature data, and T _min represents the minimum temperature data;

Wherein, the expression for calculating the standard deviation value is:

T_σ表示标准差值。

_Tσ represents the standard deviation value.

Exemplarily, the data processing device 404 is also used for:

According to the temperature data of the upper and lower surfaces of the second part collected by the data acquisition instrument, calculate the average temperature decay value of the second part under different thicknesses;

Wherein, the expression for calculating the average temperature decay value is:

表示上表面的瞬时温度数据，

表示下表面的瞬时温度数据。a _avg represents the average temperature decay value, i represents the ith temperature data, N represents the total number of temperature data,

represents the instantaneous temperature data of the upper surface,

Indicates the instantaneous temperature data of the lower surface.

Exemplarily, the data processing device 404 is also used for:

Fast Fourier transform is performed on the data collected by the data acquisition instrument to obtain the real part and the imaginary part at the corresponding frequency, and the corresponding amplitude and power spectral density are calculated according to the real part and the imaginary part.

The amplitude-frequency curve and the power spectral density-frequency curve of temperature are plotted according to the amplitude and the power spectral density, so as to obtain frequency distribution data of temperature fluctuation.

Re表示实部，Im表示虚部，A表示幅值，n表示数据总数；Wherein, the expression for calculating the amplitude (single sideband) is:

Re represents the real part, Im represents the imaginary part, A represents the amplitude, and n represents the total number of data;

Wherein, the expression for calculating the power spectral density (single sideband) is: PSD=2Δt·(Re ² +Im ² )/n, n=1, 2...n/2-1, PSD represents the power density , Δt represents the sampling time interval, and n represents the total number of data.

The above data processing device 404 will be specifically described below through an application example.

Figures 14(a) to 14(c) and Figures 15(a) to 15(b) show the mixing method using the first inlet section (eg coaxial inlet section) 301-A, the fluid medium is water, the second The material of the component (such as a metal plate) is 316H, the temperature of the first fluid is 40°C, the temperature of the second fluid is 20°C, and the outlet flow velocity is both 0.5m/s. Figure 14(a) shows fluid temperature measurement data in the mixing region, and Figure 15(a) shows temperature measurement data for the second component.

Fig. 14(a) is a schematic diagram of the instantaneous temperature provided by an embodiment of the present invention. As shown in Fig. 14(a) ) 401-A-2, measure the mixing temperature of the fluid at a height of 10 mm from the outlet position of the first inlet section 301-A, and X represents the distance from the measurement point to the center of the second fluid.

计算测量点P₂、P₃、P₅峰-峰值分别为9.80、1.51、1.13℃，标准差值分别为1.84、0.23、0.24，获得混合区域中各测量点的温度波动程度。通过对温度-时间曲线的数据进行快速傅里叶变换，使用公式PSD＝2Δt·(Re²+Im²)/n，n＝1，2...n/2-1计算功率谱密度，绘制功率谱密度-频率曲线(如图14(c)所示)，获取温度波动的频率分布区间和波动主频率。From the temperature-time curve shown in Fig. 14(a) and the average temperature-measurement point curve shown in Fig. 14(b), the temperature fluctuation and distribution in the mixed region are obtained. And by calculating the formula T _PP =T _max -T _min and

The peak-to-peak values of the calculated measurement points P ₂ , P ₃ and P ₅ were 9.80, 1.51, and 1.13°C, respectively, and the standard deviations were 1.84, 0.23, and 0.24, respectively, to obtain the temperature fluctuation degree of each measurement point in the mixed region. The power spectral density was calculated using the formula PSD=2Δt·(Re ² +Im ² )/n, n=1, 2...n/2-1 by fast Fourier transforming the data of the temperature-time curve, plotted The power spectral density-frequency curve (as shown in Figure 14(c)), obtains the frequency distribution interval of temperature fluctuations and the main frequency of fluctuations.

Figure 15(a) is a metal plate with a thickness of 1mm measured at a height of 50mm from the exit position of the first inlet section 301-A through the second bracket 401-B and the second component (such as a metal plate) 401-B-2 The upper surface temperature and lower surface temperature of , X represents the distance from the measurement point to the center of the second fluid.

计算1mm厚度的金属平板在其下表面的测量点P₂位置到上表面的测量点位置P₂’的平均温度衰减，得到该平均温度衰减的值为7.37％。Through the temperature-time curve (as shown in Fig. 15(a)) and the power spectral density-frequency curve (as shown in Fig. 15(b)), the temperature fluctuation of the measurement point is analyzed. and use the formula

The average temperature decay of a ₁ mm thick metal plate from the measurement point P2 on the lower surface to the measurement point P2' _on the upper surface was calculated, and the value of the average temperature decay was 7.37%.

The specific operation of the temperature fluctuation test in the above-mentioned fluid mixing test device will be described in detail below.

FIG. 16 is a schematic flowchart of a testing method of a fluid mixing testing device provided by an embodiment of the present invention, as shown in FIG. 16 .

Step 1600: Open the first liquid inlet valve and the second liquid inlet valve, and inject circulatable liquid into the first electrically heated constant temperature water tank and the second electrically heated constant temperature water tank, respectively.

Step 1601: Open the first electrically heated constant temperature water tank and the second electrically heated constant temperature water tank, and heat the circulatable liquid to a preset temperature to obtain corresponding first fluid and second fluid.

Wherein, the first fluid and the second fluid have different temperatures.

Step 1602, place the bracket and the temperature sensor in a preset position.

Wherein, the support includes a first support and a second support, and the temperature sensor may be a thermocouple.

It should be noted that the step 1602 may be performed in any of the above steps. For example, step 1602 may be performed before step 1600 described above.

Step 1603, open the first valve and the third valve, and open the first booster pump and the second booster pump, so that the first fluid and the second fluid are heated from the corresponding first electric heating to a constant temperature, respectively. The water tank and the second electrically heated constant temperature water tank flow out.

Step 1604, adjusting the second valve and the fourth valve so that the first fluid and the second fluid reach a preset flow rate at the outlet of the inlet section.

Step 1605: Turn on the data acquisition instrument and set the sampling frequency. When the speed of the first fluid and the second fluid at the outlet of the inlet section reaches a stable level within a preset time, record the temperature sensor under different working conditions. The detected temperature data below.

The temperature data includes the respective temperature data of the first fluid and the second fluid before mixing, the temperature data of the first fluid and the second fluid after mixing, and the temperature data of the upper and lower surfaces of the second component.

Wherein, the different working conditions include any one or more combinations of the following:

According to adjusting the temperature data of the fluid and/or the second component detected by the temperature sensor at different heights;

temperature data detected by changing the flow rates and temperatures of the first fluid and the second fluid;

According to the first mixing method of the first fluid and the second fluid (that is, the inlet section is the structure of the coaxial inlet section, as shown in FIG. 4 ) or the second mixing method (that is, the inlet section shown is a parallel inlet section structure, as shown in Figure 6) detected temperature data.

Step 1606, close the second valve and the fourth valve, and stop the first booster pump and the second booster pump.

Step 1607: Open the first drain valve and the second drain valve, so that the fluid in the mixing tank flows back to the first electrically heated constant temperature water tank and the second electrically heated constant temperature water tank, and open the first electrically heated constant temperature water tank. Three drain valves to drain the fluid in the mixing tank.

Step 1608: Process the temperature data to obtain analysis data of fluid temperature fluctuations and the resulting temperature fluctuations of the second component.

By adjusting the height of the temperature sensor, changing the temperature and flow rate of the first fluid and the second fluid, and changing the mixing method of the inlet section, and repeating the above steps 1600 to 1607, the temperature of the fluid and the second component under various combined operating conditions can be completed. Measurement.

In the above step 1608, formulas such as the temperature mean value, peak-to-peak value, standard deviation value, average temperature decay value, and power spectral density of different measurement points are calculated with reference to the above, and will not be repeated again.

In summary, the present invention can realize various jet mixing forms of cold and hot fluids; it is convenient to adjust the height of the temperature sensor in space to measure the temperature of the fluid and the surface of the components; by controlling the temperature and speed of the cold and hot fluids, various working conditions can be realized measurement of temperature fluctuations. It can objectively and effectively analyze the temperature fluctuation characteristics of fluid mixing at different temperatures and its influence on solid components.

The device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

From the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on this understanding, the above-mentioned technical solutions can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., includes several first instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in each embodiment or some part of the embodiment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (16)

1. A fluid mixing testing device, the device comprising:

the first fluid system is used for providing a first fluid, controlling preset parameters of the first fluid and recycling the mixed fluid;

the second fluid system is used for providing a second fluid, controlling preset parameters of the second fluid and recycling the mixed fluid;

the mixing system is connected with the first fluid system and the second fluid system respectively and used for providing a preset mixing mode and a mixing space of the first fluid and the second fluid;

the testing system is connected with the mixing system and is used for collecting and processing temperature data of the fluid in the mixing space and the solid component placed in the mixing space;

wherein the temperature of the first fluid is different from the temperature of the second fluid.

2. The fluid mixing testing device of claim 1, wherein the first fluid system comprises:

the first liquid inlet valve is used for controlling the inflow of fluid;

the first electric heating constant-temperature water tank is connected with the first liquid inlet valve and used for controlling the temperature parameter of the fluid to obtain the first fluid;

the first valve is connected with the first electric heating constant-temperature water tank and used for controlling the first fluid to flow out of the first electric heating constant-temperature water tank;

the first booster pump is connected with the first valve and used for increasing the flow rate of the first fluid;

the first flow meter is connected with the first booster pump and used for calculating a flow rate parameter of the first fluid;

a second valve, one end of which is connected with the first flowmeter, the other end of which is connected with the mixing system, and is used for controlling the speed of the first fluid flowing into the mixing system;

the first liquid storage tank is connected with the mixing system and is used for storing liquid flowing out of the mixing system;

one end of the first liquid discharging valve is connected with the first liquid storage tank, and the other end of the first liquid discharging valve is connected with the first electric heating constant-temperature water tank and used for controlling liquid in the first liquid storage tank to flow out;

the first fluid system is connected through a pipeline, an insulating layer covers the outside of the pipeline, and preset parameters of the first fluid comprise temperature parameters and flow rate parameters.

3. The fluid mixing testing device of claim 1, wherein the second fluid system comprises:

the second liquid inlet valve is used for controlling the inflow of the fluid;

the second electric heating constant-temperature water tank is connected with the second liquid inlet valve and used for controlling the temperature parameter of the fluid to obtain a second fluid;

the third valve is connected with the second electric heating constant-temperature water tank and is used for controlling the second fluid to flow out of the second electric heating constant-temperature water tank;

a second booster pump connected to the third valve for increasing a flow rate of the second fluid;

the second flowmeter is connected with the second booster pump and used for calculating a flow rate parameter of the second fluid;

a fourth valve, one end of which is connected with the second flowmeter and the other end of which is connected with the mixing system, and is used for controlling the speed of the second fluid flowing into the mixing system;

the second liquid storage tank is connected with the mixing system and is used for storing liquid flowing out of the mixing system;

one end of the second liquid discharge valve is connected with the second liquid storage tank, and the other end of the second liquid discharge valve is connected with the second electric heating constant-temperature water tank and used for controlling liquid in the second liquid storage tank to flow out;

the second fluid system is connected through a pipeline, an insulating layer covers the outside of the pipeline, and preset parameters of the second fluid comprise temperature parameters and flow rate parameters.

4. The fluid mixing testing device of claim 1, wherein the mixing system comprises:

the inlet end of the inlet section is respectively connected with the first fluid system and the second fluid system and is used for providing a preset mixing mode for the first fluid and the second fluid;

the bottom of the mixing box is connected with the outlet end of the inlet section, the upper end of the mixing box is provided with a first outlet interface and a second outlet interface, the first outlet interface is connected with the first fluid system, and the second outlet interface is connected with the second fluid system and used for providing a mixing space for the first fluid and the second fluid;

and the third drain valve is connected with the bottom of the mixing box and is used for controlling the discharge of the fluid in the mixing box.

5. The fluid mixing testing device of claim 4, wherein the inlet section is a first inlet section or a second inlet section:

the first inlet section takes a second flow passage corresponding to the second fluid at the second fluid inlet as a central axis, and a first flow passage corresponding to the first fluid at the first fluid inlet wraps the second flow passage at a preset interval distance to form a first mixing mode;

the second inlet section takes a second flow channel corresponding to the second fluid at the second fluid inlet as a central axis, and two sides of the second flow channel are provided with first flow channels corresponding to the first fluid so as to form a second mixing mode;

wherein the preset mixing mode comprises the first mixing mode and the second mixing mode.

6. The fluid mixing test device of claim 4, wherein the outlet end plane of the inlet section is higher than the bottom plane within the mixing tank.

7. The fluid mixing testing device of claim 4, wherein the testing system comprises:

a bracket including a first bracket for placing a first member and a second bracket for placing a second member, the first and second brackets being located within the mixing box, the second member having a predetermined thickness;

temperature sensors comprising at least one first temperature sensor, at least one second temperature sensor and at least one third temperature sensor, the first temperature sensor being located at the outlet of the inlet section for detecting the temperature of the first fluid and the second fluid, respectively; the second temperature sensor is fixed on the first component and used for detecting the temperature of the mixed fluid; the third temperature sensor is positioned on the upper surface and the lower surface of the second component and used for detecting the surface temperature of the second component;

the data acquisition instrument is respectively connected with the first temperature sensor, the second temperature sensor and the third temperature sensor and is used for acquiring temperature data of the temperature sensors;

and the data processing equipment is connected with the data acquisition instrument and is used for processing the data sent by the data acquisition instrument.

8. The fluid mixing test device of claim 7, wherein the first bracket has positioning holes for positioning the first member and adjusting the height of the first member, and the second bracket has positioning grooves for positioning the second member and adjusting the height of the second member.

9. The fluid mixing testing device of claim 7, wherein the data processing apparatus is further configured to:

drawing a temperature-time curve according to the temperature data of the temperature sensor acquired by the data acquisition instrument, and calculating the temperature mean value, peak-peak value and standard difference value of different measurement points to obtain the data of temperature distribution and temperature fluctuation at different positions;

wherein the expression for calculating the temperature mean value is: t is_avg＝∑T_i/N,T_avgDenotes the mean temperature value, T_iRepresenting instantaneous temperature data, i represents ith temperature data, and N represents the total number of the temperature data;

wherein the expression for calculating the peak-to-peak value is: t is_P-P＝T_max-T_min，T_P-PDenotes the temperature peak-to-peak value, T_maxRepresents maximum temperature data, T_minRepresents minimum temperature data;

wherein the expression for calculating the standard deviation value is as follows:

T_σthe standard deviation is indicated.

10. The fluid mixing testing device of claim 7, wherein the data processing apparatus is further configured to:

calculating average temperature attenuation values of the second component under different thicknesses according to temperature data of the upper surface and the lower surface of the second component acquired by the data acquisition instrument;

wherein the expression for calculating the average temperature decay value is:

a_avgrepresents an average temperature decay value, i represents the ith temperature data, N represents the total number of temperature data,

the instantaneous temperature data of the upper surface is represented,

representing instantaneous temperature data of the lower surface.

11. The fluid mixing testing device of claim 7, wherein the data processing apparatus is further configured to:

carrying out fast Fourier transform on the data acquired by the data acquisition instrument to obtain a real part and an imaginary part under corresponding frequencies, and calculating corresponding amplitude and power spectral density according to the real part and the imaginary part;

and drawing an amplitude-frequency curve and a power spectral density-frequency curve of the temperature according to the amplitude and the power spectral density to obtain frequency distribution data of temperature fluctuation.

Wherein the expression for calculating the amplitude is:

re represents a real part, Im represents an imaginary part, A represents an amplitude, and n represents the total number of data;

wherein the power spectral density is calculated by the expression: PSD 2 Δ t (Re)²+Im²) N, n 1, 2.. n/2-1, PSD represents power spectral density, Δ t represents sampling time interval, and n represents total data number.

12. A method of testing a bulk mixing testing device using the fluid mixing testing device of any of claims 1-11, the method comprising:

providing a first fluid and a second fluid having different temperatures;

adjusting the flow rates of the first fluid and the second fluid;

respectively detecting the temperature of the first fluid and the second fluid reaching a preset flow rate before mixing, the temperature of the first fluid and the second fluid during mixing and the temperature of the second component to obtain corresponding temperature data;

the temperature data is processed to derive analytical data of the fluid temperature fluctuations and the resulting second component temperature fluctuations.

13. The method of testing a fluid mixing testing device of claim 12, wherein said providing a first fluid and a second fluid having different temperatures comprises:

opening a first liquid inlet valve and a second liquid inlet valve, and respectively injecting recyclable liquid into the first electric heating constant-temperature water tank and the second electric heating constant-temperature water tank;

and opening the first electric heating constant-temperature water tank and the second electric heating constant-temperature water tank, and respectively heating the recyclable liquid to preset temperatures to obtain corresponding first fluid and second fluid, wherein the first fluid and the second fluid have different temperatures.

14. The method of testing a fluid mixing testing device of claim 13, wherein said adjusting the flow rate of the first fluid and the second fluid comprises:

opening a first valve and a third valve, and opening a first booster pump and a second booster pump so that the first fluid and the second fluid respectively flow out of the corresponding first electric heating constant-temperature water tank and the second electric heating constant-temperature water tank;

adjusting the second valve and the fourth valve to achieve a preset flow rate of the first fluid and the second fluid at the outlet of the inlet section.

15. The method for testing a fluid mixing testing device according to claim 14, wherein the detecting the temperatures of the first fluid and the second fluid before mixing, the temperatures of the first fluid and the second fluid when mixing, and the temperature of the second component to obtain the corresponding temperature data comprises:

placing a bracket and a temperature sensor at preset positions in advance;

opening a data acquisition instrument and setting sampling frequency, and recording temperature data detected by the temperature sensor under different working conditions after the speeds of the first fluid and the second fluid at the outlet of the inlet section are stabilized within a preset time, wherein the temperature data comprises respective temperature data of the first fluid and the second fluid before mixing, temperature data of the first fluid and the second fluid during mixing and temperature data of the upper surface and the lower surface of a second component;

wherein the different operating conditions include any one or more of the following:

according to the temperature data of the fluid and/or the second component detected by the temperature sensor at different heights;

temperature data detected by changing the flow rate and temperature of the first fluid and the second fluid;

and according to the temperature data of the first fluid and the second fluid detected in the first mixing mode or the second mixing mode.

16. The method of testing a fluid mixing testing device of claim 15, wherein prior to processing the temperature data, the method further comprises:

closing the second valve and the fourth valve and stopping the first booster pump and the second booster pump;

opening the first and second drain valves to return fluid from the mixing tank to the first and second electrically heated thermostated water tanks;

opening a third drain valve to drain the fluid in the mixing tank.

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