Test method and device of flow regulating valve, electronic equipment and storage medium

Abstract

The invention provides a test method and device of a flow regulating valve, electronic equipment and a storage medium, and relates to the technical field of valve body testing. According to the invention, the conditions of the flow regulating valve in various different working states in actual use can be simulated, the performance change node of the flow regulating valve is judged according to the change of the air flow of the air outlet of the flow regulating valve and based on the change condition of the air flow, and then the life cycle is calculated. The life cycle test of the flow regulating valve can be more comprehensive, accurate and reliable, and more valuable data support is provided for evaluating the quality and performance of the flow regulating valve. On the premise that the life cycle of the flow regulating valve is accurately and reliably determined, the air flow of the breathing machine can be effectively regulated, and the accuracy of output performance parameters of the breathing machine and the stability of the breathing machine are improved.

Description

Technical Field

[0001] The present invention relates to the field of valve body testing technology, and in particular to a method, device, electronic equipment and storage medium for testing a flow control valve. Background Art

[0002] In modern clinical medicine, ventilators are a medical device that can replace the function of spontaneous ventilation. They are widely used in patients with respiratory failure, anesthesia respiratory management during surgery, respiratory support therapy, and emergency resuscitation. Accurate control of the size of the airflow and pressure in the ventilator is crucial. A flow control valve is usually used to control the airflow or pressure of the ventilator. As the performance parameters of the ventilator output change, the flow control valve will adjust its own output flow to meet the accuracy of the ventilator performance parameters and the stability of the ventilator. As the use time of the ventilator increases, the output performance of the flow control valve itself will also decrease. The performance of the flow control valve itself needs to be tested so that the flow control valve in the ventilator can be replaced before the output performance of the flow control valve decreases.

[0003] At present, the output performance test method of the flow control valve is: when the flow control valve travels from fully open to fully closed, the flow control valve is opened and closed several times in a unit time, and it runs continuously for several hours until the output performance of the flow control valve decreases. At this time, the continuous operation time is the life cycle of the flow control valve.

[0004] However, in the above test method, the flow control valve is always in a fully open state or a fully closed state, while in actual use of the ventilator, the flow control valve is usually in an intermediate state between the fully open state and the fully closed state. Compared with the actual use of the ventilator, the fluid in the flow control valve during the test has less impact on the flow control valve, resulting in the life cycle of the flow control valve obtained from the test being longer than the life cycle of the flow control valve during actual use. As a result, before the flow control valve in the ventilator is replaced based on the life cycle obtained from the test, the output performance of the flow control valve has declined, affecting the accuracy of the output performance parameters of the ventilator and the stability of the ventilator. Summary of the invention

[0005] The problem solved by the present invention is how to accurately determine the life cycle of a flow control valve.

[0006] In order to solve the above problems, the present invention provides a flow control valve testing method, device, electronic equipment and storage medium.

[0007] In a first aspect, the present invention provides a method for testing a flow control valve, wherein the flow control valve is applied to a ventilator, comprising:

[0008] Setting multiple openings of the flow control valve and the duration corresponding to each opening;

[0009] Start injecting gas into the air inlet of the flow control valve, and obtain the first air flow rate and the second air flow rate of the air outlet at the current opening of the flow control valve; wherein the first air flow rate is the air flow rate of the air outlet at the beginning of the duration corresponding to the current opening, and the second air flow rate is the air flow rate of the air outlet at the end of the duration corresponding to the current opening;

[0010] determining a flow rate difference between the first air flow rate and the second air flow rate;

[0011] When the flow difference is less than the preset standard flow difference, the opening of the flow regulating valve is changed, and the first air flow rate and the second air flow rate of the air outlet under the changed opening of the flow regulating valve are re-obtained; until it is determined that the flow difference between the first air flow rate and the second air flow rate of the air outlet under the changed opening is greater than the preset standard flow difference;

[0012] Stop injecting gas into the gas inlet of the flow control valve, and calculate the life cycle of the flow control valve according to the start time and stop time of injecting gas.

[0013] Optionally, the multiple opening degrees of the flow regulating valve include at least: fully closed, half open, half closed and fully open.

[0014] Optionally, the setting of multiple openings of the flow regulating valve includes:

[0015] The flow rate change sensitive opening area of ​​the flow control valve is obtained, and at least three openings corresponding to the flow rate change sensitive opening area are set.

[0016] Optionally, setting the duration corresponding to each opening degree includes:

[0017] According to the application scenario of the ventilator, the time proportions of the various openings at which the flow control valve stays in different working processes are determined, and the duration corresponding to each opening is determined according to the time proportions of the various openings.

[0018] Optionally, the obtaining of the first gas flow rate and the second gas flow rate of the gas outlet at the current opening of the flow regulating valve includes:

[0019] The first gas flow rate and the second gas flow rate of the gas outlet are collected by a flow meter for measuring flow rate, and a standard flow generator is used to perform multi-point calibration on the flow meter.

[0020] Optionally, the changing the opening of the flow regulating valve includes:

[0021] An electric actuator or a pneumatic actuator is used to control the opening of the flow control valve, and an opening control signal is sent to the electric actuator or the pneumatic actuator through a valve controller.

[0022] Optionally, calculating the life cycle of the flow control valve according to the start time and stop time of injecting gas includes:

[0023] The difference between the start time and the stop time is taken as the life cycle of the flow control valve.

[0024] In a second aspect, the present invention provides a test device for a flow control valve, wherein the flow control valve is applied to a ventilator, and comprises:

[0025] A setting module, used to set multiple openings of the flow control valve and a duration corresponding to each opening;

[0026] A measuring module, used to start injecting gas into the air inlet of the flow regulating valve, and obtain a first air flow rate and a second air flow rate of the air outlet at the current opening of the flow regulating valve; wherein the first air flow rate is the air flow rate of the air outlet at the beginning of the duration corresponding to the current opening, and the second air flow rate is the air flow rate of the air outlet at the end of the duration corresponding to the current opening;

[0027] a calculation module, configured to determine a flow rate difference between the first air flow rate and the second air flow rate;

[0028] A judgment module, configured to change the opening of the flow regulating valve when the flow difference is less than a preset standard flow difference, and re-acquire the first air flow rate and the second air flow rate of the air outlet under the changed opening of the flow regulating valve; until it is determined that the flow difference between the first air flow rate and the second air flow rate of the air outlet under the changed opening is greater than the preset standard flow difference;

[0029] The test module is used to stop injecting gas into the gas inlet of the flow control valve and calculate the life cycle of the flow control valve according to the start time and stop time of injecting gas.

[0030] In a third aspect, the present invention provides an electronic device, including a memory and a processor;

[0031] The memory is used to store computer programs;

[0032] The processor is used to implement the flow control valve testing method as described in the first aspect when executing the computer program.

[0033] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the method for testing a flow control valve as described in the first aspect is implemented.

[0034] The beneficial effects of the flow control valve test method, device, electronic device and storage medium of the present invention are: by setting a plurality of different openings of the flow control valve and the corresponding duration, it is possible to simulate the flow control valve in various working states in actual use, and judge the performance change node of the flow control valve according to the change of the air flow at the outlet of the flow control valve and the change of the air flow, and then calculate the life cycle, which can make the life cycle test of the flow control valve more comprehensive, accurate and reliable, and provide more valuable data support for evaluating the quality and performance of the flow control valve. Under the premise of accurately and reliably determining the life cycle of the flow control valve, it is possible to effectively adjust the air flow of the ventilator, improve the accuracy of the output performance parameters of the ventilator and the stability of the ventilator. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The figure is a flow chart of a method for testing a flow control valve according to an embodiment of the present invention.

[0036] Figure 2 The figure is a schematic diagram of the decomposed structure of a flow control valve involved in a test method of a flow control valve according to an embodiment of the present invention.

[0037] Figure 3 It is a schematic diagram of the partial structure of a flow control valve involved in a test method of a flow control valve according to an embodiment of the present invention.

[0038] Figure 4 The figure is a schematic diagram of the opening structure of a flow control valve involved in a method for testing a flow control valve according to an embodiment of the present invention.

[0039] Figure 5 The figure is a schematic structural diagram of a flow control valve testing device according to an embodiment of the present invention.

[0040] Figure 6 A schematic diagram of the structure of an electronic device according to an embodiment of the present invention;

[0041] Figure 7 It is a schematic structural diagram of a flow regulation test device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0043] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0044] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0045] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0046] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes, and are not used to limit the scope of these messages or information.

[0047] This embodiment provides a flow control valve testing method, device, electronic equipment and storage medium.

[0048] like Figure 1 As shown, an embodiment of the present invention provides a method for testing a flow control valve, the flow control valve is applied to a ventilator, and the method for testing the flow control valve includes:

[0049] S100: setting a plurality of openings of the flow control valve and a duration corresponding to each opening.

[0050] In this step, by setting a plurality of different openings of the flow control valve and the corresponding durations, the flow control valve can be simulated in various working states in actual use, and the impact of the performance change of the flow control valve on the life cycle can be simulated. Different openings indicate different degrees of control of the flow control valve on the flow, and the duration determines the length of time the flow control valve operates in this control state, which is consistent with the situation in actual working conditions where the flow control valve is at different working points for a long time.

[0051] In this embodiment, when setting multiple openings of the flow control valve, multiple representative opening values ​​can be selected according to the flow characteristic curve of the flow control valve (such as linear, equal percentage, fast opening, etc.). It is also possible to set at least three openings corresponding to the flow change sensitive opening area after determining the flow change sensitive opening area of ​​the flow control valve. By setting multiple openings in the flow change sensitive opening area for testing, the performance change of the flow control valve in the key area of ​​flow control can be more accurately detected. It should be noted that the multiple openings of the flow control valve include at least: fully closed, half-open, half-closed and fully open of the flow control valve.

[0052] In this embodiment, when setting the duration corresponding to each opening, the duration corresponding to each opening can be determined by determining the opening time ratio of the flow control valve in different working processes according to the application scenario of the ventilator. That is, the time ratio of each opening in which the flow control valve stays in different working processes is determined, and the duration corresponding to each opening is determined according to the time ratio of each opening.

[0053] For example, when the ventilator is in operation, the flow regulating valve is in a medium opening state (such as 40%-60%) most of the time, and the duration corresponding to the medium opening can be set to be relatively long, such as 40%-50% of the total test time; while the small opening (such as 10%-20%) and large opening (such as 80%-100%) states are relatively rare, and their durations can be set to 20%-30% of the total test time respectively.

[0054] S200: Start injecting gas into the air inlet of the flow regulating valve, and obtain the first air flow rate and the second air flow rate at the air outlet under the current opening of the flow regulating valve; wherein, the first air flow rate is the air flow rate at the air outlet at the beginning of the duration corresponding to the current opening, and the second air flow rate is the air flow rate at the air outlet at the end of the duration corresponding to the current opening.

[0055] In this step, gas is injected into the air inlet of the flow control valve, and the air flow at the outlet of the flow control valve at the beginning and end of the duration corresponding to the current opening is obtained, in order to monitor the flow stability through the flow control valve within the duration interval. The core function of the flow control valve is to accurately control the flow. By comparing the flow at these two time points, it can be intuitively understood whether the flow has changed during the continuous operation of the opening, and the change in flow can often reflect whether the internal structure and sealing of the flow control valve have aging or performance changes.

[0056] For example: In the 15-minute duration corresponding to 50% opening, the first air flow measured at the beginning is 10m 3 / h, and the second air flow at the end is 9.8m 3 / h, this flow difference can be used as one of the bases for judging whether the valve performance is stable.

[0057] In this embodiment, when obtaining the first air flow rate and the second air flow rate of the outlet at the current opening of the flow control valve, the first air flow rate and the second air flow rate of the outlet are collected by a flow meter for measuring the flow rate. The flow meter is used to accurately measure the flow through the flow control valve. Specifically, multiple flow meters can be used at the same time to measure the flow rate, and flow meters with different principles (such as turbine flow meters, vortex flow meters, thermal mass flow meters, etc.) can be used to compare and verify the measurement results. Each flow meter is installed at different positions of the outlet of the flow control valve to ensure the accuracy and representativeness of the measurement.

[0058] In addition, in order to calibrate the flowmeter with high precision and ensure that its measurement error is within a very small range (for example, the error does not exceed ±0.5%), a standard flow generator is used to perform multi-point calibration on the flowmeter within the possible working flow range of the flow control valve.

[0059] S300: Determine a flow rate difference between the first air flow rate and the second air flow rate.

[0060] S400: When the flow difference is smaller than a preset standard flow difference, the opening of the flow regulating valve is changed, and the first air flow rate and the second air flow rate of the air outlet under the changed opening of the flow regulating valve are re-obtained; until it is determined that the flow difference between the first air flow rate and the second air flow rate of the air outlet under the changed opening is greater than the preset standard flow difference.

[0061] In this step, determining the flow difference between the first air flow and the second air flow and comparing it with the preset standard flow difference is the key link to determine whether the performance of the flow control valve at the current opening is up to standard. If the flow difference is less than the standard flow difference, it means that the flow control valve can maintain flow stability well at this opening without obvious performance changes; otherwise, it may indicate that the regulating ability of the flow control valve begins to decline, and factors such as internal structure or sealing have affected flow control.

[0062] When the flow difference is less than the standard flow difference, the opening is changed and the gas flow at the new opening (changed opening) is obtained again to further determine the performance of the flow control valve at other openings. Repeat this process until the flow difference is greater than the standard flow difference at a certain changed opening, indicating that the flow control performance of the flow control valve at this opening has experienced a more obvious fluctuation, which is likely a sign of valve aging or failure.

[0063] For example: The preset standard flow difference is 0.2m 3 / h. When the opening is 20%, the flow difference is less than the standard flow difference. Change the opening to 50% and continue the test until the flow difference reaches 0.3m at a certain opening, such as 80%. 3 / h, which is greater than the standard flow difference, indicating that the flow control of the flow control valve has changed significantly when the opening degree is 80%.

[0064] In this step, when changing the opening of the flow control valve, an electric actuator or a pneumatic actuator is used to control the opening of the flow control valve, and an opening control signal is sent to the electric actuator or the pneumatic actuator through a valve controller.

[0065] The valve controller (programmable logic controller) sends an opening or closing signal to the electric actuator of the flow control valve, and controls the duration of the signal at the same time to accurately control the opening stroke of the flow control valve and achieve accurate setting of the opening.

[0066] S500: Stop injecting gas into the gas inlet of the flow control valve, and calculate the life cycle of the flow control valve according to the start time and stop time of injecting gas.

[0067] In this step, after stopping injecting gas into the air inlet of the flow control valve, the life cycle of the flow control valve is calculated based on the start time and stop time of gas injection. The premise is that based on the test of flow changes under different opening degrees in the above steps S100 to S400, when the flow difference exceeds the preset standard flow difference, it indicates that the flow control valve has reached a node where its performance has changed significantly during the entire test process.

[0068] In this embodiment, the difference between the start time and the stop time is regarded as the life cycle of the flow control valve. That is, the time from the start of the test to this point is regarded as the life cycle of the flow control valve, and the life cycle provides a reference for evaluating the reliable operation time of the flow control valve in actual use.

[0069] From the above description, it can be seen that in this embodiment, by setting a plurality of different openings of the flow control valve and the corresponding duration, it is possible to simulate the flow control valve in various working conditions in actual use, and judge the performance change node of the flow control valve according to the change of the air flow at the outlet of the flow control valve and based on the change of the air flow, and then calculate the life cycle, which can make the life cycle test of the flow control valve more comprehensive, accurate and reliable, and provide more valuable data support for evaluating the quality and performance of the flow control valve. Under the premise of accurately and reliably determining the life cycle of the flow control valve, it is possible to effectively adjust the air flow of the ventilator, improve the accuracy of the output performance parameters of the ventilator and the stability of the ventilator.

[0070] This embodiment also provides a specific application example of the test method of the flow control valve. Figure 2 and Figure 3 As shown, the flow control valve includes:

[0071] The rotating disk 121 has a first opening 1211 and a through hole 1212 .

[0072] The stationary disc 122 has a second opening 1221 matching the first opening 1211 and a fixed shaft 1222 passing through the through hole 1212 .

[0073] The torsion column 123 is connected to the rotating disc 121 through a fixing pin 1213 . The torsion column 123 rotates the rotating disc 121 through the fixing pin 1213 . The rotating disc 121 rotates around the fixing shaft 1222 to control the connection and disconnection between the first opening 1211 and the second opening 1221 .

[0074] The motor 124 , the torsion column 123 is connected to the motor shaft 1241 of the motor 124 .

[0075] The spring 125 has one end connected to the motor shaft 1241 , and the other end installed on the fixed shaft 1222 through the through hole 1212 .

[0076] The principle of the flow regulating valve is as follows: the rotational force is transmitted through the torsion column 123 to rotate the rotating disc 121, so as to adjust the relative angle between the rotating disc 121 and the stationary disc 122, so that the first opening 1211 and the second opening 1221 are connected or disconnected, and further by adjusting the rotation angle of the rotating disc 121, the overlap degree of the first opening 1211 and the second opening 1221 is adjusted, thereby achieving the purpose of adjusting the flow size using the flow regulating valve.

[0077] The test methods specifically include:

[0078] (1) Control the motor of the flow control valve to start running, record the starting running time of the motor, ensure that the flow rate of the air inlet of the flow control valve remains unchanged, and obtain the rotation angle of the rotating disc and the air outlet flow rate. In this step, the rotation angle of the rotating disc can adjust the opening of the flow control valve. During this test, the opening of the flow control valve is: fully closed, half open, half closed and fully open. Among them, the rotation angle of the rotating disc corresponding to fully closed is 0 degrees, corresponding to Figure 4 (A) in the figure. The half-open and half-closed state corresponds to a 90-degree rotation angle of the rotating disc. Figure 4 (B) in the figure. The rotation angle of the rotating disc corresponding to full opening is 180 degrees, corresponding to Figure 4 (C) in.

[0079] (2) The motor starts to run continuously at a fixed frequency. Specifically, when the flow control valve is initially fully closed, that is, the rotating angle of the rotating disc is 0 degrees, the motor is started to run continuously for a preset running time, and the outlet flow rate after the first cycle at this time is recorded; after working for several preset running times, the outlet flow rate of the flow control valve at this time is recorded. When the flow control valve is initially half-open and half-closed, that is, the rotating angle of the rotating disc is 90 degrees, the motor is started to run continuously for a preset running time, and the outlet flow rate after the first cycle at this time is recorded; after working for several preset running times, the outlet flow rate of the flow control valve at this time is recorded. When the flow control valve is initially fully open, that is, the rotating angle of the rotating disc is 180 degrees, the motor is started to run continuously for a preset running time, and the outlet flow rate after the first cycle at this time is recorded; after working for several preset running times, the outlet flow rate of the flow control valve at this time is recorded.

[0080] Calculate the difference in the outlet flow rate between the first and last cycles of the rotating disc at three rotation angles (0°, 90°, 180°). Specifically, at the beginning of the test, record the outlet flow rate of the first cycle of the disc in three different states (i.e., fully closed, half-open and half-closed, and fully open); the motor runs at a fixed frequency (such as 20HZ) for each cycle, and records the outlet flow rate of the disc in the corresponding state, and calculates the deviation from the outlet flow rate of the first cycle.

[0081] If the flow deviation between the first cycle and each running cycle exceeds 5% (the ratio of the preset standard flow difference to the flow value of the first cycle), the motor stop time is recorded, and the total working time of the motor is recorded, which is the normal service life cycle of the flow control valve. If the flow deviation between the first cycle and each running cycle does not exceed 5%, continue to run the test. It should be noted that when the running time of the flow control valve exceeds this life cycle, it indicates that the performance of the flow control valve has declined and needs to be replaced.

[0082] In this application example, by controlling the motor in the flow control valve, the rotating disc is further driven to move continuously within a certain range of angles (0-180 degrees), and a certain rotation angle (0 degrees, 90 degrees, 180 degrees) is set. The change in flow at the initial moment and the rotation angle after the movement cycle is tested to determine the performance change node of the flow control valve, and then the life cycle is calculated. This can make the life cycle test of the flow control valve more comprehensive, accurate and reliable, ensure the service life of the flow control valve, effectively adjust the air flow size of the ventilator, improve the quality of ventilator products, and better ensure the life, health and safety of patients.

[0083] like Figure 5 As shown, an embodiment of the present invention provides a flow control valve testing device 500, the flow control valve is applied to a ventilator, and the testing device includes:

[0084] A setting module 510, used to set multiple openings of the flow control valve and the duration corresponding to each opening;

[0085] The measuring module 520 is used to start injecting gas into the air inlet of the flow control valve, and obtain the first air flow rate and the second air flow rate of the air outlet at the current opening of the flow control valve; wherein the first air flow rate is the air flow rate of the air outlet at the beginning of the duration corresponding to the current opening, and the second air flow rate is the air flow rate of the air outlet at the end of the duration corresponding to the current opening;

[0086] A calculation module 530, configured to determine a flow rate difference between the first air flow rate and the second air flow rate;

[0087] The judgment module 540 is used to change the opening of the flow regulating valve when the flow difference is less than the preset standard flow difference, and re-acquire the first air flow rate and the second air flow rate of the air outlet under the changed opening of the flow regulating valve; until it is determined that the flow difference between the first air flow rate and the second air flow rate of the air outlet under the changed opening is greater than the preset standard flow difference;

[0088] The test module 550 is used to stop injecting gas into the gas inlet of the flow control valve, and calculate the life cycle of the flow control valve according to the start time and stop time of injecting gas.

[0089] Optionally, the multiple opening degrees of the flow control valve of the setting module 510 include at least: fully closed, half open, half closed and fully open of the flow control valve.

[0090] Optionally, the setting module 510 is further used to obtain a flow change sensitive opening area of ​​the flow control valve, and set at least three openings corresponding to the flow change sensitive opening area.

[0091] Optionally, the module 510 is set to determine the time proportions of various openings that the flow control valve stays at in different working processes according to the application scenario of the ventilator, and determine the duration corresponding to each opening according to the time proportions of various openings.

[0092] Optionally, the measuring module 520 is further used to collect the first air flow rate and the second air flow rate at the air outlet through a flow meter for measuring flow and to perform multi-point calibration on the flow meter using a standard flow generator.

[0093] Optionally, the judgment module 540 is further configured to control the opening of the flow control valve by using an electric actuator or a pneumatic actuator, and to send an opening control signal to the electric actuator or the pneumatic actuator through a valve controller.

[0094] Optionally, the testing module 550 is further configured to use the difference between the start time and the stop time as the life cycle of the flow control valve.

[0095] The testing device for the flow control valve of this embodiment is used to implement the testing method for the flow control valve as described above. Its advantages over the prior art are the same as the advantages of the testing method for the flow control valve as described above over the prior art, and will not be repeated here.

[0096] like Figure 6 As shown, an electronic device 600 provided by an embodiment of the present invention includes a memory 620 and a processor 610; the memory 620 is used to store a computer program; the processor 610 is used to implement the test method of the flow control valve as described above when executing the computer program.

[0097] In other words, an electronic device 600 includes a memory 620 and a processor 610 coupled to the memory 620; the memory 620 is configured to store a computer program; and the processor 610 is configured to perform the following operations when executing the computer program:

[0098] Setting multiple openings of the flow control valve and the duration corresponding to each opening;

[0099] Start injecting gas into the air inlet of the flow control valve, and obtain the first air flow rate and the second air flow rate of the air outlet at the current opening of the flow control valve; wherein the first air flow rate is the air flow rate of the air outlet at the beginning of the duration corresponding to the current opening, and the second air flow rate is the air flow rate of the air outlet at the end of the duration corresponding to the current opening;

[0100] determining a flow rate difference between the first air flow rate and the second air flow rate;

[0101] When the flow difference is less than the preset standard flow difference, the opening of the flow regulating valve is changed, and the first air flow rate and the second air flow rate of the air outlet under the changed opening of the flow regulating valve are re-obtained; until it is determined that the flow difference between the first air flow rate and the second air flow rate of the air outlet under the changed opening is greater than the preset standard flow difference;

[0102] Stop injecting gas into the gas inlet of the flow control valve, and calculate the life cycle of the flow control valve according to the start time and stop time of injecting gas.

[0103] Specifically, this embodiment can adopt the following Figure 7 The flow regulating test device shown includes a flow regulating device, a fixing plate 12, an adapter 2, a connecting pipe 3 (which may be a PU pipe), a flow sensor 4, an air circuit block 5 and a base plate 6. The flow regulating device includes a stepping motor 7, a first air inlet 8 connected to an air source, a second air inlet 9 connected to a high-frequency device, a third air inlet 10 connected to the atmosphere, and an air outlet 11 connected to a patient's breathing circuit. It should be noted that the second air inlet 9 and the third air inlet 10 are respectively controlled by a first solenoid valve and a second solenoid valve to control the switches, and the flow regulating valve is arranged in the flow regulating device. The flow regulating device can be set on the bottom plate 6 through the fixing plate 12 by means of, for example, screws. The adapter 2 is set on the air outlet 11 and connected to the flow sensor 4 set on the air circuit block 5 through the connecting pipe 3. When in use, the air inlet 2 and the air inlet 3 are first closed by the electromagnetic switch valves 1 and 2, that is, only the flow of the air inlet 1 and the air outlet 8 is concerned. The pulse signal is sent by the stepping motor 7 to drive the rotation of the disc in the flow regulating valve, that is, the opening and closing size adjustment of the rotating disc 121 and the stationary disc 122 is realized to ensure the output flow of the air outlet 8. The output air flow enters the air circuit block 5 through the connecting pipe 3. There are air inlet holes and air outlet holes on the air circuit block 5. The air flow flows through the flow sensor 4 through the air inlet hole. The flow sensor 4 feeds back data to the control module (which can be a test device 500 for the flow regulating valve) according to the measured output flow. After data processing, the control module further adjusts the rotation angle of the disc by changing the pulse of the stepping motor 7 so that the output flow meets the preset standard.

[0104] It should be noted that the flow regulating test device can simultaneously perform flow detection of multiple flow regulating devices. Correspondingly, the number of structures such as the adapter 2, the connecting pipe 3 (which can be a PU pipe), and the flow sensor 4 is adjusted, such as Figure 7 As shown, the detection installation structure of two flow regulating devices is demonstrated.

[0105] An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned method for testing a flow control valve is implemented.

[0106] In other words, a non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor performs the following operations:

[0107] Setting multiple openings of the flow control valve and the duration corresponding to each opening;

[0108] Start injecting gas into the air inlet of the flow control valve, and obtain the first air flow rate and the second air flow rate of the air outlet at the current opening of the flow control valve; wherein the first air flow rate is the air flow rate of the air outlet at the beginning of the duration corresponding to the current opening, and the second air flow rate is the air flow rate of the air outlet at the end of the duration corresponding to the current opening;

[0109] determining a flow rate difference between the first air flow rate and the second air flow rate;

[0110] When the flow difference is less than the preset standard flow difference, the opening of the flow regulating valve is changed, and the first air flow rate and the second air flow rate of the air outlet under the changed opening of the flow regulating valve are re-obtained; until it is determined that the flow difference between the first air flow rate and the second air flow rate of the air outlet under the changed opening is greater than the preset standard flow difference;

[0111] Stop injecting gas into the gas inlet of the flow control valve, and calculate the life cycle of the flow control valve according to the start time and stop time of injecting gas.

[0112] An electronic device 600 that can be used as a server or client of the present invention will now be described, which is an example of a hardware device that can be applied to various aspects of the present invention. The electronic device 600 is intended to represent various forms of digital electronic computer equipment, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device 600 can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples, and are not intended to limit the implementation of the present invention described and / or required herein.

[0113] The electronic device 600 includes a computing unit, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) or a computer program loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for the operation of the device can also be stored. The computing unit, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0114] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc. In the present application, the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment of the present invention. In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0115] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A method for testing a flow control valve, wherein the flow control valve is used in a ventilator, characterized in that: include: Setting multiple openings of the flow control valve and the duration corresponding to each opening; Start injecting gas into the air inlet of the flow control valve, and obtain the first air flow rate and the second air flow rate of the air outlet at the current opening of the flow control valve; wherein the first air flow rate is the air flow rate of the air outlet at the beginning of the duration corresponding to the current opening, and the second air flow rate is the air flow rate of the air outlet at the end of the duration corresponding to the current opening; determining a flow rate difference between the first air flow rate and the second air flow rate; When the flow difference is less than the preset standard flow difference, the opening of the flow regulating valve is changed, and the first air flow rate and the second air flow rate of the air outlet under the changed opening of the flow regulating valve are re-obtained; until it is determined that the flow difference between the first air flow rate and the second air flow rate of the air outlet under the changed opening is greater than the preset standard flow difference; Stop injecting gas into the gas inlet of the flow control valve, and calculate the life cycle of the flow control valve according to the start time and stop time of injecting gas.

2. The method for testing a flow control valve according to claim 1, characterized in that: The multiple opening degrees of the flow control valve include at least: fully closed, half open, half closed and fully open.

3. The method for testing a flow control valve according to claim 1, characterized in that: The setting of multiple openings of the flow control valve includes: The flow rate change sensitive opening area of ​​the flow control valve is obtained, and at least three openings corresponding to the flow rate change sensitive opening area are set.

4. The method for testing a flow control valve according to claim 1, characterized in that: Set the duration corresponding to each opening, including: According to the application scenario of the ventilator, the time proportions of the various openings at which the flow control valve stays in different working processes are determined, and the duration corresponding to each opening is determined according to the time proportions of the various openings.

5. The method for testing a flow control valve according to claim 1, characterized in that: The step of obtaining the first gas flow rate and the second gas flow rate of the gas outlet at the current opening of the flow regulating valve comprises: The first gas flow rate and the second gas flow rate of the gas outlet are collected by a flow meter for measuring flow rate, and a standard flow generator is used to perform multi-point calibration on the flow meter.

6. The method for testing a flow control valve according to claim 1, characterized in that: The changing of the opening of the flow regulating valve comprises: An electric actuator or a pneumatic actuator is used to control the opening of the flow control valve, and an opening control signal is sent to the electric actuator or the pneumatic actuator through a valve controller.

7. The method for testing a flow control valve according to claim 1, characterized in that: The method of calculating the life cycle of the flow control valve according to the start time and stop time of gas injection includes: The difference between the start time and the stop time is taken as the life cycle of the flow control valve.

8. A test device for a flow control valve, the flow control valve being used in a ventilator, characterized in that: include: A setting module, used to set multiple openings of the flow control valve and a duration corresponding to each opening; A measuring module, used to start injecting gas into the air inlet of the flow regulating valve, and obtain a first air flow rate and a second air flow rate of the air outlet at the current opening of the flow regulating valve; wherein the first air flow rate is the air flow rate of the air outlet at the beginning of the duration corresponding to the current opening, and the second air flow rate is the air flow rate of the air outlet at the end of the duration corresponding to the current opening; a calculation module, configured to determine a flow rate difference between the first air flow rate and the second air flow rate; A judgment module, configured to change the opening of the flow regulating valve when the flow difference is less than a preset standard flow difference, and re-acquire the first air flow rate and the second air flow rate of the air outlet under the changed opening of the flow regulating valve; until it is determined that the flow difference between the first air flow rate and the second air flow rate of the air outlet under the changed opening is greater than the preset standard flow difference; The test module is used to stop injecting gas into the gas inlet of the flow control valve and calculate the life cycle of the flow control valve according to the start time and stop time of injecting gas.

9. An electronic device, characterized in that: including memory and processor; The memory is used to store computer programs; The processor is used to implement the flow control valve testing method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the method for testing a flow control valve according to any one of claims 1 to 7 is implemented.

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