A regulating valve device, oxygen chamber pressure regulating method and system

Abstract

The present invention relates to the field of gas regulating valve equipment, specifically a regulating valve device, an oxygen chamber pressure regulating method, and a system, wherein the regulating valve device includes a first valve and a second valve, respectively located in a first pipeline and a second pipeline, and controls the first valve and the second valve to operate with different switching action times, so that the second valve transmits and supplements gas flow when the first valve is in an unstable state during a response delay period, thereby achieving continuous and stable airflow transmission in the first pipeline; in addition, based on the dynamic data of the gas composition and temperature data inside the oxygen chamber, the oxygen chamber is isothermally adjusted and the intake and exhaust directional guidance is adjusted. The present invention uses the regulating valve device to adjust the gas inlet and outlet of the oxygen chamber, ensuring that the oxygen chamber continuously maintains a stable oxygen supply state and air pressure state during the intake and exhaust periods.

Description

Technical Field

[0001] The present invention relates to the field of gas regulating valve equipment, and in particular to a regulating valve device, an oxygen chamber pressure regulating method and a system. Background Art

[0002] Oxygen chambers, as oxygen supply devices, are primarily used to provide a stable and continuous oxygen supply in a sealed environment. Objects inside the chamber release carbon dioxide, causing the oxygen concentration inside the chamber to drop and making it impossible to maintain a suitable oxygen supply environment for a long time. To ensure proper operation, the chamber is equipped with multiple air inlets and outlets, one for supplying oxygen to the chamber and the other for discharging gas with a high carbon dioxide content, thereby maintaining a stable oxygen supply inside the chamber.

[0003] At present, oxygen chambers mainly use one-way solenoid valves to control the gas delivery at the air inlet and exhaust ends. The one-way solenoid valve adjusts the air inlet / exhaust flow by changing the valve opening size. Considering that the solenoid valve has a time response delay characteristic, it takes a certain amount of time for the valve to switch to the target opening size after the control signal is applied to the solenoid valve. The gas transmission adjustment time delay characteristic of the above-mentioned solenoid valve cannot ensure stable and continuous gas inlet and outlet adjustment inside the oxygen chamber, and cannot maintain a stable air pressure environment inside the oxygen chamber for a long time. Therefore, how to design a regulating valve with low time response delay and capable of stable and continuous gas inlet and outlet adjustment, and adjust the oxygen input and gas output of the oxygen chamber according to the actual gas composition and air pressure conditions inside the oxygen chamber, is of great significance for maintaining a stable oxygen supply inside the oxygen chamber. Summary of the Invention

[0004] Considering that the existing gas regulating valve has a time response delay and cannot achieve real-time and accurate adjustment of the gas flow, and cannot ensure that the oxygen chamber maintains a stable oxygen supply state during the intake and exhaust periods, the present invention provides a regulating valve device, including a first valve and a second valve;

[0005] The first valve is located in the first pipeline;

[0006] The second valve is located in the second pipeline, the input end of the second pipeline is connected to the first pipeline upstream of the first valve, and the output end of the second pipeline is connected to the first valve;

[0007] a first controller, configured to estimate a gas flow variation characteristic of the first pipeline downstream of the first valve based on an on / off operation time of the first valve;

[0008] a first flow sensor, configured to obtain a first gas flow rate in the first pipeline upstream of an input end of the second pipeline;

[0009] The second controller is used to adjust the switching action of the second valve according to the first gas flow rate and the gas flow rate change characteristics, so as to keep the gas flow rate of the first pipeline downstream of the first valve stable.

[0010] Preferably, it further comprises a second flow sensor for obtaining a second gas flow rate of the second valve upstream of the second pipeline;

[0011] The second controller is used to adjust the switching action of the second valve according to the time change difference between the first gas flow rate and the second gas flow rate and the gas flow change characteristics.

[0012] In another aspect, the present invention provides a method for regulating oxygen chamber pressure, the method comprising the following steps:

[0013] S100: Acquiring dynamic data of gas composition inside the oxygen chamber to estimate gas flow characteristics inside the oxygen chamber; determining intake and exhaust guiding paths of the oxygen chamber based on the gas flow characteristics;

[0014] S200: Acquire temperature data inside the oxygen chamber to calibrate a temperature-imbalanced subregion inside the oxygen chamber; and adjust the temperature inside the oxygen chamber according to temperature variation characteristics and spatial distribution characteristics of the temperature-imbalanced subregion to achieve an isothermal state inside the oxygen chamber.

[0015] S300: Selecting an air intake end and an air exhaust end associated with the air intake and exhaust guide path inside the oxygen chamber, and adjusting the working state of the respective regulating valve devices of the selected air intake end and the selected air exhaust end according to the air pressure data inside the oxygen chamber; wherein the regulating valve device is the above-mentioned regulating valve device.

[0016] Preferably, in S100, dynamic data of the gas composition inside the oxygen chamber is obtained to estimate the gas flow characteristics inside the oxygen chamber; and the air intake and exhaust guide paths of the oxygen chamber are determined based on the gas flow characteristics, specifically:

[0017] Performing gas component concentration detection inside the oxygen chamber to obtain oxygen concentration data and carbon dioxide concentration data inside the oxygen chamber; synchronously performing airflow detection inside the oxygen chamber to obtain airflow movement data inside the oxygen chamber;

[0018] estimating oxygen flow characteristics and carbon dioxide flow characteristics inside the oxygen chamber based on the oxygen concentration data, the carbon dioxide concentration data, and the airflow movement data;

[0019] Based on the oxygen flow characteristics and the carbon dioxide flow characteristics, the oxygen aggregation sub-area and the carbon dioxide aggregation sub-area inside the oxygen chamber are predicted; based on the spatial distribution of the oxygen aggregation sub-area and the carbon dioxide aggregation sub-area, the air intake and exhaust guide paths of the oxygen chamber are determined.

[0020] Preferably, in S200, temperature data inside the oxygen chamber is obtained to calibrate a temperature-unbalanced subregion inside the oxygen chamber; and temperature inside the oxygen chamber is adjusted according to temperature variation characteristics and spatial distribution characteristics of the temperature-unbalanced subregion to make the interior of the oxygen chamber reach an isothermal state, specifically:

[0021] Acquiring dynamic spatial distribution data of temperature within the oxygen chamber, performing spatial-temporal variation identification on the dynamic spatial distribution data of temperature, and obtaining a temperature drift range of each spatial sub-region within the oxygen chamber, thereby calibrating the temperature imbalance sub-region within the oxygen chamber;

[0022] The heat transfer state inside the oxygen chamber is estimated based on the temperature difference between the actual temperature of each of the temperature-imbalanced subregions and the actual temperature of the adjacent spatial subregions, as well as the spatial distribution positions of all the temperature-imbalanced subregions. The temperature inside the oxygen chamber is adjusted to achieve a globally isothermal state inside the oxygen chamber.

[0023] Preferably, in S300, an air intake end and an air exhaust end associated with the air intake and exhaust guide path inside the oxygen chamber are selected, and the working states of the respective regulating valve devices of the selected air intake end and exhaust end are adjusted according to the air pressure data inside the oxygen chamber, specifically:

[0024] comparing the spatial distribution of the air inlet and exhaust ends inside the oxygen chamber with the air inlet and exhaust guide paths, and selecting the air inlet and exhaust ends associated with the air inlet and exhaust guide paths;

[0025] The air pressure distribution data inside the oxygen chamber is obtained to determine the air pressure change trend in the vicinity of the selected air inlet end and the exhaust end, thereby adjusting the air intake flow and exhaust flow of the respective regulating valve devices of the selected air inlet end and the exhaust end.

[0026] In another aspect, the present invention provides an oxygen chamber pressure regulation system, the system comprising the following modules:

[0027] a gas flow estimation module, configured to obtain dynamic data of gas composition inside the oxygen chamber, thereby estimating gas flow characteristics inside the oxygen chamber;

[0028] a guide path determination module, configured to determine the intake and exhaust guide paths of the oxygen chamber according to the gas flow characteristics;

[0029] a temperature imbalance calibration module, configured to obtain temperature data inside the oxygen chamber and calibrate the temperature imbalance sub-region inside the oxygen chamber;

[0030] a temperature adjustment module, configured to adjust the temperature inside the oxygen chamber according to the temperature variation characteristics and spatial distribution characteristics of the temperature imbalance sub-region, so as to make the interior of the oxygen chamber reach an isothermal state;

[0031] The air intake and exhaust adjustment module is used to select the air intake end and the exhaust end associated with the air intake and exhaust guide path inside the oxygen chamber, and adjust the working state of the respective regulating valve devices of the selected air intake end and the exhaust end according to the air pressure data inside the oxygen chamber; wherein the regulating valve device is the above-mentioned regulating valve device.

[0032] Preferably, the gas flow estimation module is used to obtain dynamic data of gas composition inside the oxygen chamber to estimate the gas flow characteristics inside the oxygen chamber, specifically:

[0033] Performing gas component concentration detection inside the oxygen chamber to obtain oxygen concentration data and carbon dioxide concentration data inside the oxygen chamber; synchronously performing airflow detection inside the oxygen chamber to obtain airflow movement data inside the oxygen chamber;

[0034] estimating oxygen flow characteristics and carbon dioxide flow characteristics inside the oxygen chamber based on the oxygen concentration data, the carbon dioxide concentration data, and the airflow movement data;

[0035] The guide path determination module is used to determine the intake and exhaust guide paths of the oxygen chamber according to the gas flow characteristics, specifically:

[0036] Based on the oxygen flow characteristics and the carbon dioxide flow characteristics, the oxygen aggregation sub-area and the carbon dioxide aggregation sub-area inside the oxygen chamber are predicted; based on the spatial distribution of the oxygen aggregation sub-area and the carbon dioxide aggregation sub-area, the air intake and exhaust guide paths of the oxygen chamber are determined.

[0037] Preferably, the temperature imbalance calibration module is used to obtain temperature data inside the oxygen chamber to calibrate the temperature imbalance sub-region inside the oxygen chamber, specifically:

[0038] Acquiring dynamic spatial distribution data of temperature within the oxygen chamber, performing spatial-temporal variation identification on the dynamic spatial distribution data of temperature, and obtaining a temperature drift range of each spatial sub-region within the oxygen chamber, thereby calibrating the temperature imbalance sub-region within the oxygen chamber;

[0039] The temperature adjustment module is used to adjust the temperature inside the oxygen chamber according to the temperature change characteristics and spatial distribution characteristics of the temperature imbalance sub-region so that the interior of the oxygen chamber reaches an isothermal state, specifically:

[0040] The heat transfer state inside the oxygen chamber is estimated based on the temperature difference between the actual temperature of each of the temperature-imbalanced subregions and the actual temperature of the adjacent spatial subregions, as well as the spatial distribution positions of all the temperature-imbalanced subregions. The temperature inside the oxygen chamber is adjusted to achieve a globally isothermal state inside the oxygen chamber.

[0041] Preferably, the air intake and exhaust adjustment module is used to select the air intake end and the exhaust end associated with the air intake and exhaust guide path inside the oxygen chamber, and adjust the working state of the respective regulating valve devices of the selected air intake end and the exhaust end according to the air pressure data inside the oxygen chamber, specifically:

[0042] comparing the spatial distribution of the air inlet and exhaust ends inside the oxygen chamber with the air inlet and exhaust guide paths, and selecting the air inlet and exhaust ends associated with the air inlet and exhaust guide paths;

[0043] The air pressure distribution data inside the oxygen chamber is obtained to determine the air pressure change trend in the vicinity of the selected air inlet end and the exhaust end, thereby adjusting the air intake flow and exhaust flow of the respective regulating valve devices of the selected air inlet end and the exhaust end.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] The regulating valve device of the present invention includes a first valve and a second valve, respectively, located in a first pipeline and a second pipeline. The first valve and the second valve are controlled to operate with different switching times, so that the second valve transmits and supplements gas flow when the first valve is in an unstable state during a response delay period, thereby achieving continuous and stable airflow transmission in the first pipeline. Furthermore, the regulating valve device is used to adjust the oxygen chamber's isothermal state and adjust the intake and exhaust direction based on dynamic data of the gas composition and temperature within the oxygen chamber. The regulating valve device adjusts the gas inflow and outflow of the oxygen chamber, ensuring that the oxygen chamber maintains a stable oxygen supply and pressure during intake and exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0047] Figure 1 It is a structural diagram of a regulating valve device provided by the present invention.

[0048] Figure 2 It is the flow rate variation curve of the transmission gas of the first valve and the second valve.

[0049] Figure 3 The present invention provides a flow chart of an oxygen chamber pressure regulating method.

[0050] Figure 4 This is the internal layout of the oxygen chamber.

[0051] Figure 5 It is the air intake and exhaust guide path of the oxygen chamber.

[0052] Figure 6 It is the temperature drift of the temperature imbalance sub-area of ​​the oxygen chamber.

[0053] Figure 7 It is a structural diagram of an oxygen chamber pressure regulating system provided by the present invention. DETAILED DESCRIPTION

[0054] 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. It will be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0055] The terms "comprise," "comprising," and "having," and any variations thereof, as used herein, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0056] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] See also Figure 1 As shown, the present invention provides a regulating valve device, comprising a first valve and a second valve;

[0058] The first valve is located in the first pipeline;

[0059] The second valve is located in the second pipeline, the input end of the second pipeline is connected to the first pipeline upstream of the first valve, and the output end of the second pipeline is connected to the first valve;

[0060] a first controller, configured to estimate a gas flow variation characteristic of the first pipeline downstream of the first valve based on an on / off operation time of the first valve;

[0061] a first flow sensor, configured to obtain a first gas flow rate in the first pipeline upstream of an input end of the second pipeline;

[0062] The second controller is used to adjust the switching action of the second valve according to the first gas flow rate and the gas flow rate change characteristics, so as to keep the gas flow rate of the first pipeline downstream of the first valve stable.

[0063] Furthermore, it also includes a second flow sensor for obtaining the second gas flow upstream of the second valve in the second pipeline;

[0064] The second controller is used to adjust the switching action of the second valve according to the time variation difference between the first gas flow rate and the second gas flow rate and the gas flow variation characteristics.

[0065] Furthermore, it also includes a pressure pump located downstream of the second valve of the second pipeline; the pressure pump can intercept, store and pressurize the gas transmitted through the second valve, thereby increasing the gas flow rate transmitted to the first valve through the second pipeline, thereby supplementing the gas transmission flow of the first valve.

[0066] Please continue reading Figure 1 , the first pipeline includes an air inlet end and an air outlet end, wherein the air inlet end is usually connected to an oxygen supply source such as an oxygen cylinder or an oxygen concentrator or to the air outlet of the oxygen chamber, and the air outlet end is usually connected to the air inlet of the oxygen chamber or to the external environment, and is used to transmit oxygen from the oxygen supply source to the inside of the oxygen chamber or to transmit the gas inside the oxygen chamber (such as gas with a high carbon dioxide content) to the external environment. The gas transmission flow rate in the first pipeline depends on the working state of the first valve. Among them, the first valve can be but is not limited to a solenoid valve. The first valve changes its own valve opening size under the control of the first controller, thereby changing the gas transmission flow rate in the first pipeline. Considering that there will be a corresponding response time delay after the first valve receives the opening instruction from the first controller, the above-mentioned response time delay is mainly reflected in that the first valve cannot immediately switch to the desired valve opening size, the valve will slowly open, and the valve may oscillate during the opening period and cannot smoothly open to the above-mentioned desired valve opening size, so that the gas flow transmitted to the air outlet end of the first pipeline through the first valve appears as follows. Figure 2 The gradually increasing trend in the time interval Δt3 is shown. It can be seen that if only the first valve is set in the first pipeline to control the gas flow, the gas outlet of the first pipeline cannot maintain a stable gas output flow, affecting the gas transmission flow stability of the regulating valve device.

[0067] In view of the fact that the first valve alone cannot maintain a stable flow rate for gas transmission in the first pipeline, a second pipeline is added to the first pipeline to supplement the gas transmission in the first pipeline. Specifically, the input end of the second pipeline is connected to the first pipeline at an upstream position of the first valve, and the output end of the second pipeline is connected to the first valve. In this way, the gas input from the air inlet end of the first pipeline can be partially diverted to the second pipeline at an upstream position of the first valve. The diverted gas is then processed by the second valve and the pressure pump in the second pipeline to adjust the transmission flow rate and control the pressure increase rate, so as to transmit a gas flow greater than the original gas transmission flow rate of the first pipeline to the first valve, thereby making up for the gas transmission gap caused by the slow increase in gas transmission flow rate within the time interval Δt3 after the first valve receives the opening command from the first controller.

[0068] A second valve and a pressure pump are provided in the second pipeline. The second valve may be, but is not limited to, a solenoid valve. The second valve changes its valve opening under the second controller, thereby changing the gas transmission flow in the second pipeline. Considering that there will be a corresponding response time delay after the second valve receives the opening instruction and the closing instruction from the second controller; for example, when the second valve receives the opening instruction, the second valve cannot immediately switch to the desired valve opening, the valve will slowly open, and the valve may oscillate during the opening period and cannot smoothly open to the above-mentioned desired valve opening, so that the gas flow transmitted to the gas outlet end of the second pipeline through the second valve appears as follows. Figure 2 When the second valve receives the closing command, it cannot switch to the fully closed state immediately. The valve will close slowly, so that the gas flow transmitted to the outlet end of the second pipeline through the second valve is as follows. Figure 2 The above analysis shows that the purpose of setting up the second pipeline is to supplement the gas transmission to the first pipeline during the time interval Δt3 when the first valve is in operation, and the second valve of the second pipeline also has unstable gas transmission flow rate during the time interval Δt1. In order to enable the second pipeline to supplement the gas transmission to the first pipeline at a stable gas transmission flow rate, the time when the second valve is triggered to open needs to be earlier than the time when the first valve is triggered to open. Figure 2It can be seen that the time point when the second valve is triggered to open and switched to transmitting gas at a stable flow rate is at least not later than the time point when the first valve is triggered to open, that is, there is a time difference Δt2 between the time point when the second valve is triggered to open and switched to transmitting gas at a stable flow rate and the time point when the first valve is triggered to open, and the above time difference Δt2 ≥ 0, thereby ensuring that the second pipeline effectively transmits and supplements the first pipeline with gas. In addition, the pressure pump can intercept, store gas, and pressurize the gas transmitted through the second valve in the second pipeline. Specifically, the pressure pump can intercept the gas transmitted through the second valve for a corresponding period of time, so that the pressure pump forms a sufficient volume of gas, and then increases the speed and pressure of the intercepted gas, thereby increasing the flow rate of gas transmitted from the second pipeline to the first valve, thereby making up for the gas transmission flow gap of the first valve in the time interval Δt3, and ensuring that the first valve can also output gas to the gas outlet at a stable flow rate within the time interval Δt3.

[0069] The first controller and the second controller may be, but are not limited to, microcontrollers. The first controller is connected to the first valve and the first flow sensor, while the second controller is connected to the second valve and the second flow sensor. The first controller estimates the gas flow variation characteristics of the first pipeline downstream of the first valve (e.g., the gas flow variation characteristics of the first valve downstream of the first valve corresponding to time interval Δt3) based on the future time point at which an opening instruction is sent to the first valve and the theoretical time required for the first valve to switch from its current valve opening state to its desired valve opening state. Simultaneously, the first controller reads the first gas flow rate of the first pipeline upstream of the input end of the second pipeline from the first flow sensor and transmits the first gas flow rate to the second controller. Based on the first gas flow rate and the gas flow variation characteristics, the second controller adjusts the opening and closing behavior of the second valve (e.g., the valve opening triggering time and the desired valve opening of the second valve) so that the second valve is triggered to open and switch to transmitting gas at a stable flow rate earlier than the time point at which the first valve is triggered to open, and the second valve is able to switch to an appropriate valve opening to promptly transmit gas flow to the pressure pump, ensuring that the pressure pump receives sufficient gas flow to increase the speed and pressure. This replenishes the gas flow transmitted to the first valve, maintaining a stable gas flow at the outlet end of the first pipeline downstream of the first valve. In addition, the second controller can also read the second gas flow of the second valve in the upstream section of the second pipeline from the second flow sensor, compare the time changes of the first gas flow and the second gas flow, determine the time change difference between the two (that is, the time change data of the difference between the two), and adjust the valve opening trigger time and the expected valve opening of the second valve in combination with the above-mentioned airflow change characteristics, so as to improve the accuracy and real-time performance of the airflow transmission supplement of the second pipeline to the first pipeline.

[0070] See also Figure 3 As shown, the present invention provides an oxygen chamber pressure adjustment method, which includes the following steps:

[0071] S100: Obtain dynamic data of the gas composition inside the oxygen chamber to estimate the gas flow characteristics inside the oxygen chamber; determine the intake and exhaust guide paths of the oxygen chamber based on the gas flow characteristics.

[0072] Furthermore, in S100, dynamic data of the gas composition inside the oxygen chamber is obtained to estimate the gas flow characteristics inside the oxygen chamber; based on the gas flow characteristics, the intake and exhaust guide paths of the oxygen chamber are determined, specifically:

[0073] The gas component concentration inside the oxygen chamber is detected to obtain the oxygen concentration data and carbon dioxide concentration data inside the oxygen chamber; the airflow inside the oxygen chamber is detected synchronously to obtain the airflow movement data inside the oxygen chamber;

[0074] Estimate the oxygen flow characteristics and carbon dioxide flow characteristics inside the oxygen chamber based on the oxygen concentration data, carbon dioxide concentration data, and airflow movement data;

[0075] Based on the oxygen flow characteristics and carbon dioxide flow characteristics, the oxygen and carbon dioxide aggregation sub-areas inside the oxygen chamber are predicted; based on the spatial distribution of the oxygen and carbon dioxide aggregation sub-areas, the intake and exhaust guidance paths of the oxygen chamber are determined.

[0076] See also Figure 4 Multiple oxygen sensors, multiple carbon dioxide sensors, multiple airflow sensors, and multiple temperature sensors are distributed inside the oxygen cabin. Among them, the oxygen sensor and the carbon dioxide sensor respectively detect the oxygen concentration data and carbon dioxide concentration data of the corresponding area inside the oxygen cabin where they are located. Considering that the oxygen cabin provides a stable oxygen environment for the breathing of people inside, people inhale oxygen and exhale carbon dioxide during the breathing process, which causes the oxygen concentration inside the oxygen cabin to decrease and the carbon dioxide concentration to increase. In addition, a relatively distributed airflow environment is formed inside the oxygen cabin, and the exhaled carbon dioxide diffuses to different areas inside the oxygen cabin with the movement of the airflow inside the oxygen cabin, further reducing the oxygen pressure inside the oxygen cabin. In order to ensure the normal operation of the oxygen cabin and maintain a stable internal oxygen pressure, it is necessary to supply oxygen to the interior of the oxygen cabin and exhaust the carbon dioxide inside the oxygen cabin to the maximum extent possible.

[0077] The above analysis demonstrates that a relatively independent airflow environment forms within the oxygen chamber, with oxygen and carbon dioxide diffused and transported along with the airflow. To accurately supply oxygen and exhaust carbon dioxide within the oxygen chamber, spatial localization of the oxygen and carbon dioxide flow patterns within the chamber is necessary. Specifically, multiple distributed oxygen and carbon dioxide sensors are used to detect oxygen and carbon dioxide concentrations within the chamber, generating oxygen and carbon dioxide concentration distributions for the regions adjacent to each oxygen and carbon dioxide sensor. Based on the locations of all oxygen and carbon dioxide sensors within the chamber, spatial modeling is performed to determine the oxygen and carbon dioxide concentrations for all oxygen and carbon dioxide sensors, generating global oxygen and carbon dioxide concentration data for the chamber. Simultaneously, multiple airflow sensors simultaneously detect and globally integrate airflow within the chamber, generating airflow motion data within the chamber. This airflow motion data may include, but is not limited to, the direction and velocity of airflow within the chamber.

[0078] Oxygen and carbon dioxide within the oxygen chamber are transported by airflow, reaching different areas within the chamber and potentially accumulating within these areas. To accurately locate the movement of oxygen and carbon dioxide within the chamber, oxygen concentration data, carbon dioxide concentration data, and airflow data are dynamically analyzed within the chamber to estimate the oxygen and carbon dioxide flow characteristics within the chamber. These flow characteristics refer to the flow rate and direction of oxygen and carbon dioxide, respectively, within the chamber. Based on these flow characteristics, the locations of oxygen and carbon dioxide accumulation within the chamber are predicted, resulting in oxygen and carbon dioxide accumulation subregions within the chamber. These subregions are defined as those where the actual oxygen concentration exceeds a first threshold and the actual carbon dioxide concentration exceeds a second threshold, respectively. This analysis demonstrates that the proper functioning of an oxygen chamber depends on the timely removal of carbon dioxide from the chamber and the continuous, stable supply of oxygen to maintain an appropriate oxygen pressure. The accumulation of oxygen and carbon dioxide in local sub-areas inside the oxygen chamber cannot maintain normal operation of the oxygen chamber. Therefore, the air intake and exhaust guidance paths of the oxygen chamber are determined based on the spatial distribution of the oxygen and carbon dioxide accumulation sub-areas. Please refer to Figure 5 The above-mentioned intake and exhaust guide paths refer to the effective transmission paths for inputting oxygen into the oxygen chamber and the effective transmission paths for discharging carbon dioxide inside the oxygen chamber to the external environment, which provide a reliable basis for the subsequent control of oxygen input and carbon dioxide discharge inside the oxygen chamber.

[0079] S200: Acquire temperature data inside the oxygen chamber to calibrate the temperature imbalance sub-region inside the oxygen chamber; adjust the temperature inside the oxygen chamber according to the temperature change characteristics and spatial distribution characteristics of the temperature imbalance sub-region to make the interior of the oxygen chamber reach an isothermal state.

[0080] Furthermore, in S200, temperature data inside the oxygen chamber is obtained to calibrate the temperature imbalance sub-region inside the oxygen chamber; based on the temperature change characteristics and spatial distribution characteristics of the temperature imbalance sub-region, the temperature inside the oxygen chamber is adjusted to make the interior of the oxygen chamber reach an isothermal state, specifically:

[0081] Obtain dynamic spatial distribution data of the temperature inside the oxygen chamber, identify spatial-temporal changes in the temperature spatial distribution dynamic data, and obtain the temperature drift range of each spatial sub-region inside the oxygen chamber, thereby calibrating the temperature imbalance sub-region inside the oxygen chamber;

[0082] Based on the temperature difference between the actual temperature of each temperature-imbalanced sub-region and the actual temperature of the adjacent spatial sub-region and the spatial distribution of all temperature-imbalanced sub-regions, the heat transfer state inside the oxygen chamber is estimated, and the temperature inside the oxygen chamber is adjusted to achieve a globally isothermal state.

[0083] According to the ideal gas equation, the gas pressure inside a sealed space is related to the gas temperature inside the sealed space. When the temperature inside a sealed space such as an oxygen chamber is uneven, the gas pressure inside the chamber (especially the oxygen pressure) is also uneven, and it is impossible to ensure that the oxygen pressure inside the chamber is continuously stable and uniform. This not only reduces the operating stability of the oxygen chamber, but also cannot ensure that the oxygen input into the chamber is evenly distributed in the entire space. For this reason, please refer to Figure 4 , through the multiple temperature sensors distributed inside the oxygen cabin, the global range of the oxygen cabin is dynamically detected to obtain the dynamic data of the spatial distribution of temperature inside the oxygen cabin. The above-mentioned dynamic data of spatial distribution of temperature refers to the data of the temperature change over time in different spatial sub-regions of the global range inside the oxygen cabin. Then the spatial-temporal change identification is performed on the above-mentioned dynamic data of spatial distribution of temperature to obtain the temperature drift range of each spatial sub-region inside the oxygen cabin. The above-mentioned temperature drift range refers to the difference between the highest temperature value and the lowest temperature value during the period of temperature drift change in each spatial sub-region. If the temperature difference of the above-mentioned temperature drift range is greater than the preset temperature difference threshold, the corresponding spatial sub-region is calibrated as a temperature imbalance sub-region. Otherwise, the corresponding spatial sub-region is not calibrated as a temperature imbalance sub-region, so as to provide a basis for converting the interior of the oxygen cabin into a global isothermal state. Please refer to Figure 6 , is the temperature drift of one of the temperature imbalance sub-areas inside the oxygen chamber, from Figure 6 It can be seen that the temperature imbalance sub-region presents large temperature fluctuations within a short time interval, resulting in the gas pressure (especially oxygen pressure) in the temperature imbalance sub-region being unable to maintain stability.

[0084] In order to quickly convert the global scope of the oxygen chamber interior to an isothermal state, the heat transfer state inside the oxygen chamber is estimated based on the temperature difference between the actual temperature of each temperature-imbalanced sub-region and the actual temperature of the adjacent spatial sub-region and the spatial distribution position of all temperature-imbalanced sub-regions. Generally speaking, the above-mentioned heat transfer state refers to the heat transfer flow rate and transfer flow direction inside the oxygen chamber, and the temperature increase or decrease trend of each spatial sub-region inside the oxygen chamber is determined. In this way, the semiconductor refrigeration component or semiconductor heating component inside the oxygen chamber is used to adjust the temperature of the corresponding spatial sub-region to make the interior of the oxygen chamber reach a global isothermal state, that is, the global scope of the oxygen chamber is at the same target temperature state, avoiding the temperature space difference inside the oxygen chamber that affects the gas pressure stability inside the oxygen chamber.

[0085] S300: Selecting an air intake end and an air exhaust end associated with the air intake and exhaust guide paths inside the oxygen chamber, and adjusting the working states of the respective regulating valve devices of the selected air intake end and the selected air exhaust end according to the air pressure data inside the oxygen chamber; wherein the regulating valve device is the above-mentioned regulating valve device.

[0086] Furthermore, in S300, an air intake end and an air exhaust end associated with the air intake and exhaust guide paths inside the oxygen chamber are selected, and the working states of the respective regulating valve devices of the selected air intake end and exhaust end are adjusted according to the air pressure data inside the oxygen chamber, specifically:

[0087] Comparing the spatial distribution of the air inlet and exhaust ends inside the oxygen chamber and the air inlet and exhaust guide paths, selecting the air inlet and exhaust ends associated with the air inlet and exhaust guide paths;

[0088] The air pressure distribution data inside the oxygen chamber is obtained to determine the air pressure change trend in the areas adjacent to the selected air inlet and exhaust ends, thereby adjusting the air intake and exhaust flow rates of the respective regulating valve devices at the selected air inlet and exhaust ends.

[0089] See also Figure 4 , multiple air inlet ends and multiple air outlet ends are distributed inside the oxygen chamber, and each air inlet end and each air outlet end is correspondingly provided with a regulating valve device. Among them, the regulating valve device at the air inlet end is used to input oxygen into the oxygen chamber, and the regulating valve device at the air outlet end is used to output the gas with a high carbon dioxide content inside the oxygen chamber, so as to realize the circulation and replacement of oxygen and carbon dioxide inside the oxygen chamber. In order to replenish the oxygen input into the oxygen chamber in time and output the carbon dioxide accumulated inside the oxygen chamber to the external environment in time, by comparing the spatial distribution of the air inlet end and the air outlet end inside the oxygen chamber and the air inlet and exhaust guide paths, the air inlet end and the exhaust end associated with the air inlet and exhaust guide paths are selected, wherein the selected air inlet end and exhaust end are preferably the air inlet end and exhaust end whose distance from the air inlet and exhaust guide paths is less than a preset distance threshold, so as to facilitate the accurate replenishment of oxygen and discharge of carbon dioxide inside the oxygen chamber.

[0090] In order to prevent the overall air pressure inside the oxygen chamber from fluctuating too much during the period of replenishing oxygen and discharging carbon dioxide inside the oxygen chamber, the air pressure distribution data inside the oxygen chamber is analyzed to determine the pressure change trend of the adjacent areas of the above-selected air inlet end and exhaust end inside the oxygen chamber, that is, to determine the pressure increase or decrease trend of the adjacent areas of the above-selected air inlet end and exhaust end, so as to adjust the air intake flow rate and exhaust flow rate of the regulating valve devices of the above-selected air inlet end and exhaust end respectively, to ensure that the gas pressure inside the oxygen chamber is effectively maintained stable during the dynamic operation of oxygen input and carbon dioxide discharge inside the oxygen chamber, thereby achieving dynamic balanced ventilation of the gas inside the oxygen chamber.

[0091] See also Figure 7 As shown, the present invention provides an oxygen chamber pressure regulation system, which includes the following modules:

[0092] The gas flow estimation module is used to obtain dynamic data of the gas composition inside the oxygen chamber to estimate the gas flow characteristics inside the oxygen chamber;

[0093] A guidance path determination module is used to determine the intake and exhaust guidance paths of the oxygen chamber based on the gas flow characteristics;

[0094] A temperature imbalance calibration module is used to obtain temperature data inside the oxygen chamber and calibrate the temperature imbalance sub-area inside the oxygen chamber;

[0095] A temperature adjustment module is used to adjust the temperature inside the oxygen chamber according to the temperature change characteristics and spatial distribution characteristics of the temperature imbalance sub-region to achieve an isothermal state inside the oxygen chamber;

[0096] The air intake and exhaust adjustment module is used to select the air intake end and exhaust end associated with the air intake and exhaust guide path inside the oxygen chamber, and adjust the working state of the respective regulating valve devices of the selected air intake end and exhaust end according to the air pressure data inside the oxygen chamber; wherein the regulating valve device is the above-mentioned regulating valve device.

[0097] Furthermore, the gas flow estimation module is used to obtain dynamic data of the gas composition inside the oxygen chamber to estimate the gas flow characteristics inside the oxygen chamber, specifically:

[0098] The gas component concentration inside the oxygen chamber is detected to obtain the oxygen concentration data and carbon dioxide concentration data inside the oxygen chamber; the airflow inside the oxygen chamber is detected synchronously to obtain the airflow movement data inside the oxygen chamber;

[0099] Estimate the oxygen flow characteristics and carbon dioxide flow characteristics inside the oxygen chamber based on the oxygen concentration data, carbon dioxide concentration data, and airflow movement data;

[0100] The guidance path determination module is used to determine the intake and exhaust guidance paths of the oxygen chamber based on the gas flow characteristics, specifically:

[0101] Based on the oxygen flow characteristics and carbon dioxide flow characteristics, the oxygen and carbon dioxide aggregation sub-areas inside the oxygen chamber are predicted; based on the spatial distribution of the oxygen and carbon dioxide aggregation sub-areas, the intake and exhaust guidance paths of the oxygen chamber are determined.

[0102] Furthermore, the temperature imbalance calibration module is used to obtain temperature data inside the oxygen chamber and calibrate the temperature imbalance sub-area inside the oxygen chamber, specifically:

[0103] Obtain dynamic spatial distribution data of the temperature inside the oxygen chamber, identify spatial-temporal changes in the temperature spatial distribution dynamic data, and obtain the temperature drift range of each spatial sub-region inside the oxygen chamber, thereby calibrating the temperature imbalance sub-region inside the oxygen chamber;

[0104] The temperature adjustment module is used to adjust the temperature inside the oxygen chamber according to the temperature change characteristics and spatial distribution characteristics of the temperature imbalance sub-region to achieve an isothermal state. Specifically:

[0105] Based on the temperature difference between the actual temperature of each temperature-imbalanced sub-region and the actual temperature of the adjacent spatial sub-region and the spatial distribution of all temperature-imbalanced sub-regions, the heat transfer state inside the oxygen chamber is estimated, and the temperature inside the oxygen chamber is adjusted to achieve a globally isothermal state.

[0106] Furthermore, the air intake and exhaust adjustment module is used to select the air intake end and the exhaust end associated with the air intake and exhaust guide path inside the oxygen chamber, and adjust the working state of the respective regulating valve devices of the selected air intake end and the exhaust end according to the air pressure data inside the oxygen chamber, specifically:

[0107] Comparing the spatial distribution of the air inlet and exhaust ends inside the oxygen chamber and the air inlet and exhaust guide paths, selecting the air inlet and exhaust ends associated with the air inlet and exhaust guide paths;

[0108] The air pressure distribution data inside the oxygen chamber is obtained to determine the air pressure change trend in the areas adjacent to the selected air inlet and exhaust ends, thereby adjusting the air intake and exhaust flow rates of the respective regulating valve devices at the selected air inlet and exhaust ends.

[0109] The operation and effects of the oxygen chamber pressure regulating system of the present invention correspond to and are consistent with those of the above-mentioned oxygen chamber pressure regulating method, and the description of the oxygen chamber pressure regulating system will not be repeated here.

[0110] Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by adding the necessary general-purpose hardware platform, or of course, by combining hardware and software. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the prior art, can be embodied in the form of a computer product. The present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it, and other embodiments may also be used. Although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A regulating valve device, comprising a first valve and a second valve, characterized in that: The first valve is located in the first pipeline; The second valve is located in the second pipeline, the input end of the second pipeline is connected to the first pipeline upstream of the first valve, and the output end of the second pipeline is connected to the first valve; a first controller, configured to estimate a gas flow variation characteristic of the first pipeline downstream of the first valve based on an on / off operation time of the first valve; a first flow sensor, configured to obtain a first gas flow rate in the first pipeline upstream of an input end of the second pipeline; The second controller is used to adjust the switching action of the second valve according to the first gas flow rate and the gas flow rate change characteristics, so as to keep the gas flow rate of the first pipeline downstream of the first valve stable.

2. The regulating valve device according to claim 1, characterized in that: Also included is a second flow sensor for obtaining a second gas flow rate of the second valve upstream of the second pipeline; The second controller is used to adjust the switching action of the second valve according to the time change difference between the first gas flow rate and the second gas flow rate and the gas flow change characteristics.

3. A method for regulating oxygen chamber pressure, characterized in that: The method comprises the following steps: S100: Acquiring dynamic data of gas composition inside the oxygen chamber to estimate gas flow characteristics inside the oxygen chamber; determining intake and exhaust guiding paths of the oxygen chamber based on the gas flow characteristics; S200: Acquire temperature data inside the oxygen chamber to calibrate a temperature-imbalanced subregion inside the oxygen chamber; and adjust the temperature inside the oxygen chamber according to temperature variation characteristics and spatial distribution characteristics of the temperature-imbalanced subregion to achieve an isothermal state inside the oxygen chamber. S300: Selecting an intake end and an exhaust end associated with the intake and exhaust guide path inside the oxygen chamber, and adjusting the working states of the respective regulating valve devices of the selected intake end and exhaust end according to the air pressure data inside the oxygen chamber; wherein the regulating valve device is the regulating valve device according to any one of claims 1-2.

4. The method according to claim 3, characterized in that In S100, dynamic data of the gas composition inside the oxygen chamber is obtained to estimate the gas flow characteristics inside the oxygen chamber; based on the gas flow characteristics, the intake and exhaust guide paths of the oxygen chamber are determined, specifically: Performing gas component concentration detection inside the oxygen chamber to obtain oxygen concentration data and carbon dioxide concentration data inside the oxygen chamber; synchronously performing airflow detection inside the oxygen chamber to obtain airflow movement data inside the oxygen chamber; estimating oxygen flow characteristics and carbon dioxide flow characteristics inside the oxygen chamber based on the oxygen concentration data, the carbon dioxide concentration data, and the airflow movement data; Based on the oxygen flow characteristics and the carbon dioxide flow characteristics, the oxygen aggregation sub-area and the carbon dioxide aggregation sub-area inside the oxygen chamber are predicted; based on the spatial distribution of the oxygen aggregation sub-area and the carbon dioxide aggregation sub-area, the air intake and exhaust guide paths of the oxygen chamber are determined.

5. The method according to claim 3, characterized in that In S200, temperature data inside the oxygen chamber is obtained to calibrate a temperature-unbalanced subregion inside the oxygen chamber; and temperature inside the oxygen chamber is adjusted according to temperature variation characteristics and spatial distribution characteristics of the temperature-unbalanced subregion to achieve an isothermal state inside the oxygen chamber, specifically: Acquiring dynamic spatial distribution data of temperature within the oxygen chamber, performing spatial-temporal variation identification on the dynamic spatial distribution data of temperature, and obtaining a temperature drift range of each spatial sub-region within the oxygen chamber, thereby calibrating the temperature imbalance sub-region within the oxygen chamber; The heat transfer state inside the oxygen chamber is estimated based on the temperature difference between the actual temperature of each of the temperature-imbalanced subregions and the actual temperature of the adjacent spatial subregions, as well as the spatial distribution positions of all the temperature-imbalanced subregions. The temperature inside the oxygen chamber is adjusted to achieve a globally isothermal state inside the oxygen chamber.

6. The method according to claim 3, characterized in that In S300, an air intake end and an air exhaust end associated with the air intake and exhaust guide path inside the oxygen chamber are selected, and the working states of the respective regulating valve devices of the selected air intake end and exhaust end are adjusted according to the air pressure data inside the oxygen chamber, specifically: comparing the spatial distribution of the air inlet and exhaust ends inside the oxygen chamber with the air inlet and exhaust guide paths, and selecting the air inlet and exhaust ends associated with the air inlet and exhaust guide paths; The air pressure distribution data inside the oxygen chamber is obtained to determine the air pressure change trend in the vicinity of the selected air inlet end and the exhaust end, thereby adjusting the air intake flow and exhaust flow of the respective regulating valve devices of the selected air inlet end and the exhaust end.

7. An oxygen chamber pressure regulating system, characterized in that: The system includes the following modules: a gas flow estimation module, configured to obtain dynamic data of gas composition inside the oxygen chamber, thereby estimating gas flow characteristics inside the oxygen chamber; a guide path determination module, configured to determine the intake and exhaust guide paths of the oxygen chamber according to the gas flow characteristics; a temperature imbalance calibration module, configured to obtain temperature data inside the oxygen chamber and calibrate the temperature imbalance sub-region inside the oxygen chamber; a temperature adjustment module, configured to adjust the temperature inside the oxygen chamber according to the temperature variation characteristics and spatial distribution characteristics of the temperature imbalance sub-region, so as to make the interior of the oxygen chamber reach an isothermal state; An intake and exhaust adjustment module is used to select the intake end and exhaust end associated with the intake and exhaust guide path inside the oxygen chamber, and adjust the working state of the respective regulating valve devices of the selected intake end and exhaust end according to the air pressure data inside the oxygen chamber; wherein the regulating valve device is the regulating valve device according to any one of claims 1-2.

8. The system according to claim 7, characterized in that The gas flow estimation module is used to obtain dynamic data of the gas composition inside the oxygen chamber to estimate the gas flow characteristics inside the oxygen chamber, specifically: Performing gas component concentration detection inside the oxygen chamber to obtain oxygen concentration data and carbon dioxide concentration data inside the oxygen chamber; synchronously performing airflow detection inside the oxygen chamber to obtain airflow movement data inside the oxygen chamber; estimating oxygen flow characteristics and carbon dioxide flow characteristics inside the oxygen chamber based on the oxygen concentration data, the carbon dioxide concentration data, and the airflow movement data; The guide path determination module is used to determine the intake and exhaust guide paths of the oxygen chamber according to the gas flow characteristics, specifically: Based on the oxygen flow characteristics and the carbon dioxide flow characteristics, the oxygen aggregation sub-area and the carbon dioxide aggregation sub-area inside the oxygen chamber are predicted; based on the spatial distribution of the oxygen aggregation sub-area and the carbon dioxide aggregation sub-area, the air intake and exhaust guide paths of the oxygen chamber are determined.

9. The system according to claim 7, wherein: The temperature imbalance calibration module is used to obtain temperature data inside the oxygen chamber to calibrate the temperature imbalance sub-area inside the oxygen chamber, specifically: Acquiring dynamic spatial distribution data of temperature within the oxygen chamber, performing spatial-temporal variation identification on the dynamic spatial distribution data of temperature, and obtaining a temperature drift range of each spatial sub-region within the oxygen chamber, thereby calibrating the temperature imbalance sub-region within the oxygen chamber; The temperature adjustment module is used to adjust the temperature inside the oxygen chamber according to the temperature change characteristics and spatial distribution characteristics of the temperature imbalance sub-region so that the interior of the oxygen chamber reaches an isothermal state, specifically: The heat transfer state inside the oxygen chamber is estimated based on the temperature difference between the actual temperature of each of the temperature-imbalanced subregions and the actual temperature of the adjacent spatial subregions, as well as the spatial distribution positions of all the temperature-imbalanced subregions. The temperature inside the oxygen chamber is adjusted to achieve a globally isothermal state inside the oxygen chamber.

10. The system according to claim 7, wherein: The air intake and exhaust adjustment module is used to select the air intake end and the exhaust end associated with the air intake and exhaust guide path inside the oxygen chamber, and adjust the working state of the regulating valve device of each of the selected air intake end and the exhaust end according to the air pressure data inside the oxygen chamber, specifically: comparing the spatial distribution of the air inlet and exhaust ends inside the oxygen chamber with the air inlet and exhaust guide paths, and selecting the air inlet and exhaust ends associated with the air inlet and exhaust guide paths; The air pressure distribution data inside the oxygen chamber is obtained to determine the air pressure change trend in the vicinity of the selected air inlet end and the exhaust end, thereby adjusting the air intake flow and exhaust flow of the respective regulating valve devices of the selected air inlet end and the exhaust end.

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