CN118099483A - Method and system for testing injection flow - Google Patents
Method and system for testing injection flow Download PDFInfo
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Abstract
The invention relates to the technical field of fuel cell injection performance test, in particular to an injection flow test method and an injection flow test system; the method comprises the following steps: s100: preparing a test system; s200: initializing a test system; s300: and (3) control starting: adjusting the state of the ball valve according to the real-time flow error e flow (t) and the pressure error e pressure (t), and enabling the system to enter a proper working state; the controller starts to calculate a control signal U (t) comprising a flow error compensation term f 1 (t) and a pressure error compensation term f 2 (t); s400: monitoring the flow and the pressure; s500: adjusting the state of the ball valve and adjusting the pressure rise and flow of the ejector; s600: and (3) adjusting real-time parameters: s700: and after the test is finished, data analysis is carried out, so that the overall test and adjustment of the injection flow performance can be achieved, all the steps are mutually linked, the stability, the accuracy and the controllability of a test system are jointly ensured, and therefore, a precise test result is obtained, and the injection performance of the injector is more effectively detected.
Description
Technical Field
The invention relates to the technical field of fuel cell injection performance test, in particular to an injection flow test method and an injection flow test system.
Background
In the prior art, the injection performance test method and the injection performance test system of the fuel cell have a plurality of problems in various aspects, and the improvement of the overall performance of the fuel cell is restricted. Firstly, the injection performance test method and system of the fuel cell in the prior art are complex in operation, multiple parameters are required to be manually adjusted, so that the operation complexity is increased, human errors are easily introduced, and the operability and stability of the test system are reduced. Secondly, the fuel cell injection performance test method and system in the prior art lack of flexibility in coping with dynamic changes in experiments, have limited adaptivity, are difficult to monitor and adjust in real time, and influence the adaptability to different working conditions in the test process. In the aspect of monitoring precision, the fuel cell injection performance testing method and system in the prior art are limited by the technical level, and the accuracy of monitoring key parameters is insufficient, so that the reliability of a testing result is affected. In addition, in the fuel cell injection performance test method and system in the prior art, real-time data are difficult to fully utilize for accurate data analysis and system optimization after the test is finished, so that the analysis and optimization difficulty of the test result is high. Finally, in the prior art lacking in modular design, the fuel cell injection performance test system causes insufficient tight connection between the functional modules, and the overall cooperative work effect of the system is affected.
Disclosure of Invention
The invention aims to provide a method and a system for testing the injection flow, which aim at overcoming the defects in the prior art, so that the overall test and adjustment of the performance of the injection flow can be realized, the steps are mutually connected, the stability, the accuracy and the controllability of a test system are jointly ensured, and the accurate test result is obtained, and the effect of detecting the injection performance of an injector is more effectively achieved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a method of testing injection flow, the method comprising:
S100: preparing a test system, and installing and connecting all components;
S200: initializing a test system, ensuring that all connections are correct, and setting an initial state;
S300: and (3) control starting: adjusting the state of the ball valve according to the real-time flow error e flow (t) and the pressure error e pressure (t), and enabling the system to enter a proper working state; the controller starts to calculate a control signal U (t) comprising a flow error compensation term f 1 (t) and a pressure error compensation term f 2 (t);
s400: monitoring the flow and the pressure, and monitoring the inlet flow and the reflux flow, and the inlet pressure and the reflux pressure in real time;
s500: adjusting the state of the ball valve: adjusting the state of the ball valve according to the control signal U (t), the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t), and adjusting the pressure rise and flow of the ejector;
S600: and (3) adjusting real-time parameters: dynamically adjusting parameters of a controller according to the real-time flow error e flow (t) and the pressure error e pressure (t) data; to optimize the test effect to the greatest extent;
S700: and (5) ending the test and performing data analysis.
Further, S101: installing a gas cylinder and a pressure regulating valve to provide the required gas;
S102: all the components are connected; s103: the ejector is installed and is sequentially connected with the main pipeline, the return pipeline and the outlet pipeline.
Further, S201: initializing the state of the ball valve;
s202: calibrating the first flowmeter and the second flowmeter;
S203: the first pressure sensor and the second pressure sensor are calibrated.
Further, the real-time flow error e flow (t) is calculated using the following formula:
e flow (t) =target flow-actual flow;
the pressure error e pressure (t) is calculated using the following formula:
e pressure (t) =target pressure-actual pressure;
The flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t) are calculated using the following formulas:
f 1 (t) =scaling factor 1·eflow (t)
F 2 (t) =scaling factor 2·epressure (t);
the control signal U (t) is calculated using the following formula:
Further, S400: and acquiring real-time data through the first flowmeter, the second flowmeter, the first pressure sensor and the second pressure sensor, and monitoring inlet flow and reflux flow, inlet pressure and reflux pressure in real time.
Further, S601: defining a gain adjustment coefficient beta: setting an initial value to represent the step length of the proportional gain adjustment;
S602: real-time data processing: acquiring the real-time flow error e flow (t) and the pressure error e pressure (t);
s603: gain adjustment: the proportional gain K p° is adjusted according to the direction of the flow error and the pressure error:
if the real-time flow error e flow (t) and the pressure error e pressure (t) are the same in number, indicating that the flow and the pressure direction are consistent, increasing the proportional gain K p°;
If the real-time flow error e flow (t) and the pressure error e pressure (t) are different, indicating that the flow and the pressure are opposite, reducing the proportional gain K p°;
S604: ball valve state adjustment: using the adjusted value of K p°, in combination with the previous control signal U (t) and the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t), the state of the ball valve is adjusted.
Further, after the test is completed, test data, including parameters of flow correlation, pressure correlation and the state of the ball valve are recorded, and experimental results are analyzed.
A test system for injection flow for carrying out the method of claim 7, the system comprising:
A gas supply module including the gas cylinder and the pressure regulating valve;
a control and monitoring module including the controller, the first flow meter, the second flow meter, the first pressure sensor, the second pressure sensor;
the ejector module comprises the ejector and a programmable power supply;
The power supply and electric module comprises an atmospheric pressure, a 5V power supply box and a voltmeter;
a flow and pressure regulation module comprising the ball valve;
An outlet module including an outlet.
Further, the ejector is sequentially provided with a main pipeline, a return pipeline and an outlet pipeline;
The inlet of the ejector is connected with the first pressure sensor, the first pressure sensor and the first flowmeter on the controller pipeline, the controller end is connected with the pressure regulating valve, and the pressure regulating valve is connected with the gas cylinder;
The ejector reflux port is connected with the second flowmeter;
the ejector outlet is connected with the ball valve, the second pressure sensor is connected in parallel between the ejector outlet and the ball valve pipeline, the second pressure sensor is connected with the 5V power supply box, the 5V power supply box is connected with the voltmeter, and the rear end of the ball valve is the outlet;
The ejector is connected with the programmable power supply.
The method for testing the injection flow comprises the following steps: s100: preparing a test system, and installing and connecting all components; s200: initializing a test system, ensuring that all connections are correct, and setting an initial state; s300: and (3) control starting: adjusting the state of the ball valve according to the real-time flow error e flow (t) and the pressure error e pressure (t), and enabling the system to enter a proper working state; the controller starts to calculate a control signal U (t) comprising a flow error compensation term f 1 (t) and a pressure error compensation term f 2 (t); s400: monitoring the flow and the pressure, and monitoring the inlet flow and the reflux flow, and the inlet pressure and the reflux pressure in real time; s500: adjusting the state of the ball valve: adjusting the state of the ball valve according to the control signal U (t), the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t), and adjusting the pressure rise and flow of the ejector; s600: and (3) adjusting real-time parameters: dynamically adjusting parameters of a controller according to the real-time flow error e flow (t) and the pressure error e pressure (t) data; to optimize the test effect to the greatest extent; s700: the test is finished, data analysis is carried out, and a system for testing the injection flow for implementing the method is provided, wherein the system comprises: a gas supply module including the gas cylinder and the pressure regulating valve; a control and monitoring module including the controller, the first flow meter, the second flow meter, the first pressure sensor, the second pressure sensor; the ejector module comprises the ejector and a programmable power supply; the power supply and electric module comprises an atmospheric pressure, a 5V power supply box and a voltmeter; a flow and pressure regulation module comprising the ball valve; the outlet module comprises an outlet structure, so that the overall test and adjustment of the injection flow performance can be achieved, all the steps are mutually connected, the stability, the accuracy and the controllability of the test system are jointly ensured, and therefore the accurate test result is obtained, and the injection performance effect of the injector is effectively detected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of a method of testing injection flow according to the present invention;
FIG. 2 is a schematic diagram of a preparation phase of the test system of the present invention;
FIG. 3 is a schematic diagram of an initialization phase of the test system of the present invention;
FIG. 4 is a schematic diagram of a pair of real-time parameter adjustment stages according to the present invention;
FIG. 5 is a schematic diagram of a method system for testing injection flow according to the present invention;
reference numerals:
The device comprises a gas cylinder 1, a pressure regulating valve 2, a controller 3, a first flowmeter 4, a first pressure sensor 5, an ejector 6, a programmable power supply 7, atmospheric pressure 8, a second flowmeter 9, a second pressure sensor 10, a 5V power supply box 11, a voltmeter 12, a ball valve 13 and an outlet 14.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be noted that the directions or positional relationships indicated as being "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1, the method for testing the injection flow comprises the following steps:
S100: preparing a test system, and installing and connecting all components;
S200: initializing a test system, ensuring that all connections are correct, and setting an initial state;
S300: and (3) control starting: adjusting the state of the ball valve 13 according to the real-time flow error e flow (t) and the pressure error e pressure (t), and enabling the system to enter a proper working state; the controller 3 starts to calculate the control signal U (t) including the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t);
s400: monitoring the flow and the pressure, and monitoring the inlet flow and the reflux flow, and the inlet pressure and the reflux pressure in real time;
S500: adjusting the state of the ball valve: the state of the ball valve 13 is adjusted according to the control signal U (t), the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t), and the pressure rise and the flow of the ejector 6 are adjusted;
S600: and (3) adjusting real-time parameters: dynamically adjusting parameters of the controller 3 according to the real-time flow error e flow (t) and the pressure error e pressure (t) data; to optimize the test effect to the greatest extent;
S700: and (5) ending the test and performing data analysis.
Specifically, by S100: preparing the test system, installing and connecting all components to ensure the stability and readiness of the test system and provide reliable gas supply and data monitoring for subsequent testing; then through S200: initializing a test system, ensuring that all connections are correct, and setting an initial state to improve the accuracy and repeatability of the test, and ensuring that the corresponding system is in a controllable state before starting the test; then through S300: and (3) control starting: adjusting the state of the ball valve 13 according to the real-time flow error e flow (t) and the pressure error e pressure (t), and enabling the system to enter a proper working state; the controller 3 starts to calculate a control signal U (t) including a flow error compensation term f 1 (t) and a pressure error compensation term f 2 (t) so as to realize adjustment control of a corresponding test system, so that the test system can stably work under different working conditions, and the flexibility and the adaptability of the test are improved; then through S400: monitoring the flow and the pressure, monitoring the inlet flow and the reflux flow, and the inlet pressure and the reflux pressure in real time, so as to provide real-time data in the test process, control and adjust the data, and further ensure the stability and the accuracy in the test process; then through S500: adjusting the state of the ball valve: the state of the ball valve 13 is adjusted according to the control signal U (t) and the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t), the pressure rise and the flow of the ejector 6 are adjusted to control the gas flow of the test system, the flow and the pressure are ensured to accord with expectations, and the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t) are combined, so that the adjustment is more accurate, and a more stable condition is provided for the subsequent test; then through S600: and (3) adjusting real-time parameters: dynamically adjusting parameters of the controller 3 according to the real-time flow error e flow (t) and the pressure error e pressure (t) data; the test effect is optimized to the greatest extent, so that the adaptability and the performance of the test system are further improved, the test system can be better adapted to the change of the test conditions, and the test effect is optimized; finally, through S700: ending the test and performing data analysis to provide complete test data for evaluating the results and performance of the test and guiding subsequent improvement and optimization; the overall test and adjustment of the injection flow performance are realized through the overall injection flow test method, the steps are mutually connected, the stability, the accuracy and the controllability of a test system are jointly ensured, and therefore, the accurate test result is obtained, and the injection performance of the injector is more effectively detected.
As a preference for the above embodiment, S101, as shown in fig. 2: installing a gas cylinder 1 and a pressure regulating valve 2 to supply a required gas; s102: all the components are connected; s103: the ejector 6 is installed and connected with a main pipeline, a return pipeline and an outlet pipeline in sequence.
Specifically, through S101: installing a gas cylinder 1 and a pressure regulating valve 2 to supply a required gas; s102: all the components are connected; s103: the ejector 6 is installed and sequentially connected with the main path, the return pipeline and the outlet pipeline, so that test conditions are met, a test foundation is established, meanwhile, stable gas supply of the test system is ensured, a complete test experiment system is constructed by connecting all components, gas can reach the ejector 6 from the gas cylinder 1 through the pressure regulating valve 2, the reliability and the accuracy of the test are further improved through monitoring and adjustment of other components, a fluid passage of the ejector 6 is constructed, the gas can flow according to a designed path, the correct trend of the gas flow of the test system is ensured, and controllable and stable test conditions are further provided for subsequent performance tests.
As a preference for the above embodiment, S201, as shown in fig. 3: initializing the state of the ball valve 13; s202: calibrating the first flowmeter 4 and the second flowmeter 9; s203: the first pressure sensor 5, the second pressure sensor 10 are calibrated.
Specifically, by S201: initializing the state of the ball valve 13; s202: calibrating the first flowmeter 4 and the second flowmeter 9; s203: the first pressure sensor 5 and the second pressure sensor 10 are calibrated to set the state of the ball valve 13 to be the initial state, so that the ball valve 13 is in a known state at the beginning of the test, and thus the problem caused by uncertain state of the ball valve 13 at the beginning of the test is avoided, the repeatability and the accuracy of the test are improved, and the accuracy and the reliability of test data are further improved by calibrating the flowmeter and the pressure sensor, so that the controllability and the data quality of the test are improved.
As a preference to the above embodiment, as shown in fig. 1, the real-time flow error e flow (t) is calculated using the following formula:
e flow (t) =target flow-actual flow;
the pressure error e pressure (t) is calculated using the following formula:
e pressure (t) =target pressure-actual pressure;
The flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t) are calculated using the following formulas:
f 1 (t) =scaling factor 1·eflow (t)
F 2 (t) =scaling factor 2·epressure (t);
the control signal U (t) is calculated using the following formula:
Specifically, the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t) are introduced through a calculation formula of the control signal U (t), so that the correction can be performed according to the actual flow error and the real-time monitoring pressure error, the robustness of the system to nonlinear factors and external disturbance is improved, the two compensation terms are comprehensively considered, and the error in the test system can be more comprehensively corrected. The control signal U (t) will not only depend on the desired flow, which makes the test system more adaptable to changes in the actual working environment, further improving the performance and control accuracy of the test system.
As a preference for the above embodiment, S400, as shown in fig. 1: real-time data is acquired by the first flowmeter 4, the second flowmeter 9, the first pressure sensor 5 and the second pressure sensor 10, and the inlet flow rate and the reflux flow rate, as well as the inlet pressure and the reflux pressure, are monitored in real time.
Specifically, through S400: real-time data are acquired through the first flowmeter 4, the second flowmeter 9, the first pressure sensor 5 and the second pressure sensor 10, the inlet flow and the reflux flow, and the inlet pressure and the reflux pressure are monitored in real time so as to provide real-time information of the running state of the test system, and support is provided for real-time regulation and control, fault diagnosis and test result verification of the system, so that the controllability, reliability and optimality of the test are enhanced.
As a preference for the above embodiment, S601, as shown in fig. 4: defining a gain adjustment coefficient beta: setting an initial value to represent the step length of the proportional gain adjustment;
S602: real-time data processing: acquiring the real-time flow error e flow (t) and the pressure error e pressure (t);
s603: gain adjustment: the proportional gain K p° is adjusted according to the direction of the flow error and the pressure error:
if the real-time flow error e flow (t) and the pressure error e pressure (t) are the same in number, indicating that the flow and the pressure direction are consistent, increasing the proportional gain K p°;
If the real-time flow error e flow (t) and the pressure error e pressure (t) are different, indicating that the flow and the pressure are opposite, reducing the proportional gain K p°;
S604: ball valve state adjustment: using the adjusted value of K p°, the state of the ball valve 13 is adjusted in combination with the previous control signal U (t) and the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t).
Specifically, by dynamically adjusting the proportional gain K p°, the test system can more precisely adjust the state of the ball valve 13 based on the real-time flow error e flow (t) and the pressure error e pressure (t). The method is helpful for ensuring that the flow and the pressure in the injection flow test system reach the expected values, improving the accuracy of test data, and simultaneously, the test system can effectively avoid system instability caused by fluctuation of the flow and the pressure by utilizing real-time adjustment of the proportional gain K p°. The state adjustment of the ball valve 13 is smoother, so that the oscillation risk of the test system is reduced, and the stability of the test system is improved; the test system has the capability of rapidly responding to system changes by adjusting the proportional gain K p° according to the directions of the real-time flow error e flow (t) and the pressure error e pressure (t), so that the test system can adapt to the changes of real-time working conditions more rapidly, and the instantaneity of the injection flow test system is ensured; and because the running of the test system is more stable through the state adjustment of the smoother and more accurate ball valve 13, the abrasion and loss of the components of the test system are further reduced, thereby prolonging the service life of the injection flow test system and improving the reliability and durability of the system.
As a preferred embodiment of the above embodiment, as shown in fig. 1, after the test is completed, test data including parameters of flow rate correlation, pressure correlation and the state of the ball valve 13 are recorded and the experimental results are analyzed.
Specifically, after the test is completed, test data including parameters of flow correlation, pressure correlation and the state of the ball valve 13 are recorded, experimental results are analyzed, the scientificity, reliability and repeatability of the test are further improved, and basic data and important references are provided for further optimizing a test system and in-depth research.
A test system for injection flow for carrying out the method of claim 7, as shown in fig. 5, said system comprising:
a gas supply module comprising the gas cylinder 1 and the pressure regulating valve 2;
A control and monitoring module comprising said controller 3, said first flowmeter 4, said second flowmeter
9. The first pressure sensor 5 and the second pressure sensor 10;
The ejector module comprises the ejector 6 and a programmable power supply 7;
A power supply and electrical module comprising an atmospheric pressure 8, a 5V power supply box 11 and a voltmeter 12;
A flow and pressure regulation module comprising said ball valve 13;
An outlet module comprising an outlet 14.
As a preference of the above embodiment, as shown in fig. 5, the ejector 6 is provided with a main circuit, a return circuit and an outlet circuit in this order;
The inlet of the ejector 6 is connected with the first pressure sensor 5, the first pressure sensor 5 and the first flowmeter 4 on the pipeline of the controller 3, the end of the controller 3 is connected with the pressure regulating valve 2, and the pressure regulating valve 2 is connected with the gas cylinder 1;
The reflux port of the ejector 6 is connected with the second flowmeter 9;
The outlet of the ejector 6 is connected with the ball valve 13, a second pressure sensor 10 is connected in parallel between the outlet of the ejector 6 and a pipeline of the ball valve 13, the second pressure sensor 10 is connected with the 5V power box 11, the 5V power box 11 is connected with the voltmeter 12, and the rear end of the ball valve 13 is the outlet 14;
the ejector 6 is connected with the programmable power supply 7.
Specifically, by means of the module arrangement and the corresponding arrangement mode of the test system, the system is more convenient to install, the instantaneity and the accuracy of each data acquisition in the test system are ensured, each part of the system is further tightly connected, the flow is clear, and meanwhile, the stability and the flexibility of the system are ensured.
The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A method for testing injection flow is characterized by comprising the following steps:
The method comprises the following steps:
S100: preparing a test system, and installing and connecting all components;
S200: initializing a test system, ensuring that all connections are correct, and setting an initial state;
S300: and (3) control starting: adjusting the state of the ball valve (13) according to the real-time flow error e flow (t) and the pressure error e pressure (t), and enabling the system to enter a proper working state; the controller (3) starts to calculate a control signal U (t) comprising a flow error compensation term f 1 (t) and a pressure error compensation term f 2 (t);
s400: monitoring the flow and the pressure, and monitoring the inlet flow and the reflux flow, and the inlet pressure and the reflux pressure in real time;
S500: adjusting the state of the ball valve: adjusting the state of the ball valve (13) according to the control signal U (t), the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t), and adjusting the pressure rise and flow of the ejector (6);
S600: and (3) adjusting real-time parameters: dynamically adjusting parameters of a controller (3) according to the real-time flow error e flow (t) and the pressure error e pressure (t) data; to optimize the test effect to the greatest extent;
S700: and (5) ending the test and performing data analysis.
2. The method for testing the injection flow according to claim 1, wherein,
S101: installing a gas cylinder (1) and a pressure regulating valve (2) to provide the required gas;
s102: all the components are connected;
s103: the ejector (6) is installed and is sequentially connected with the main pipeline, the return pipeline and the outlet pipeline.
3. The method for testing the injection flow according to claim 2, wherein,
S201: initializing the state of the ball valve (13);
s202: calibrating the first flowmeter (4) and the second flowmeter (9);
S203: the first pressure sensor (5) and the second pressure sensor (10) are calibrated.
4. A method for testing an ejector flow according to claim 3, wherein,
The real-time flow error e flow (t) is calculated using the following formula:
e flow (t) =target flow-actual flow;
the pressure error e pressure (t) is calculated using the following formula:
e pressure (t) =target pressure-actual pressure;
The flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t) are calculated using the following formulas:
f 1 (t) =scaling factor 1·eflow (t)
F 2 (t) =scaling factor 2·epressure (t);
the control signal U (t) is calculated using the following formula:
5. The method and system for testing the injection flow according to claim 4, wherein,
S400: real-time data are acquired through the first flowmeter (4), the second flowmeter (9), the first pressure sensor (5) and the second pressure sensor (10), and inlet flow and reflux flow, inlet pressure and reflux pressure are monitored in real time.
6. The method for testing the injection flow according to claim 5, wherein,
S601: defining a gain adjustment coefficient beta: setting an initial value to represent the step length of the proportional gain adjustment;
S602: real-time data processing: acquiring the real-time flow error e flow (t) and the pressure error e pressure (t);
S603: gain adjustment: the proportional gain K po is adjusted according to the direction of the flow error and the pressure error:
If the real-time flow error e flow (t) and the pressure error e prssure (t) are the same in number, indicating that the flow and the pressure direction are consistent, increasing the proportional gain K po;
if the real-time flow error e flow (t) and the pressure error e pressure (t) are different, indicating that the flow and the pressure are opposite, reducing the proportional gain K po;
S604: ball valve state adjustment: using the adjusted value of K po, in combination with the previous control signal U (t) and the flow error compensation term f 1 (t) and the pressure error compensation term f 2 (t), the state of the ball valve (13) is adjusted.
7. The method according to claim 6, wherein after the completion of the test, the test data, parameters including the flow rate dependence, the pressure dependence and the state of the ball valve (13) are recorded and the experimental result is analyzed.
8. A system for testing the injection flow rate for carrying out the method of claim 7, said system comprising:
A gas supply module comprising the gas cylinder (1) and the pressure regulating valve (2);
a control and monitoring module comprising the controller (3), the first flowmeter (4), the second flowmeter (9), the first pressure sensor (5), the second pressure sensor (10);
The ejector module comprises the ejector (6) and a programmable power supply (7);
a power supply and electrical module comprising an atmospheric pressure (8), a 5V power supply box (11) and a voltmeter (12);
a flow and pressure regulation module comprising said ball valve (13);
An outlet module comprising an outlet (14).
9. The injection flow test system according to claim 8, wherein the injector (6) is provided with a main line, a return line and an outlet line in sequence;
The inlet of the ejector (6) is connected with the first pressure sensor (5), the first pressure sensor (5) and the first flowmeter (4) on the pipeline of the controller (3), the end of the controller (3) is connected with the pressure regulating valve (2), and the pressure regulating valve (2) is connected with the gas cylinder (1);
The reflux port of the ejector (6) is connected with the second flowmeter (9);
The outlet of the ejector (6) is connected with the ball valve (13), a second pressure sensor (10) is connected in parallel between the outlet of the ejector (6) and a pipeline of the ball valve (13), the second pressure sensor (10) is connected with the 5V power box (11), the 5V power box (11) is connected with the voltmeter (12), and the rear end of the ball valve (13) is provided with the outlet (14);
the ejector (6) is connected with the programmable power supply (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410100197.XA CN118099483A (en) | 2024-01-24 | 2024-01-24 | Method and system for testing injection flow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410100197.XA CN118099483A (en) | 2024-01-24 | 2024-01-24 | Method and system for testing injection flow |
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| Publication Number | Publication Date |
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| CN118099483A true CN118099483A (en) | 2024-05-28 |
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| CN202410100197.XA Pending CN118099483A (en) | 2024-01-24 | 2024-01-24 | Method and system for testing injection flow |
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| CN (1) | CN118099483A (en) |
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