CN116721727B - Method, device and equipment for restricting hydrogen charge under material hydrogen content determination condition - Google Patents
Method, device and equipment for restricting hydrogen charge under material hydrogen content determination condition Download PDFInfo
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C60/00—Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
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- G—PHYSICS
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- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
- G01N7/04—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder by absorption or adsorption alone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Abstract
The application provides a hydrogen charging amount constraint method, a device and equipment under the condition of material hydrogen content measurement, comprising the following steps: providing samples of various qualities; measuring at least the pressure drop of each sample during the hydrogen filling process and the actual hydrogen content after the hydrogen filling is finished; constructing a sample database according to the determined characteristic set of the mass, pressure drop and actual hydrogen content of each sample; establishing a relation between the actual hydrogen content and other characteristics in the sample database; obtaining the mass and target hydrogen content of a material to be charged, and calculating the target pressure drop of the material to be charged by utilizing the relation, wherein the target hydrogen content is substituted into the relation as the actual hydrogen content; and correspondingly restricting the hydrogen charging amount of the material to be charged in the hydrogen charging process according to the target pressure drop. And further, the deviation between the actual hydrogen content and the expected value is effectively eliminated, the hydrogen charging material is ensured to reach the preset hydrogen content, the accuracy of the hydrogen charging process is improved, and the performance and the hydrogen storage efficiency of the hydrogen storage material are further optimized.
Description
Technical Field
The invention relates to the field of hydrogen absorption control of hydrogen absorption materials, in particular to a hydrogen charging amount constraint method, a device and equipment under the condition of material hydrogen content measurement.
Background
The hydrogen absorption means a process in which a hydrogen storage material reacts with gaseous hydrogen to form a metal hydride through phase transition. A large amount of hydrogen is stored in the hydrogen storage material in the form of a solid metal hydride by this reaction. Various materials have been developed for hydrogen absorption, including metal hydrides, porous materials, carbon-based materials, etc., which have the advantages of high adsorption capacity, good hydrogen storage performance, and reversible hydrogen absorption and desorption cycles.
Hydrogen charging is a key step for realizing hydrogen absorption of materials, and hydrogen is injected into the materials through hydrogen charging, so that the materials can absorb and store hydrogen. During the hydrogen charging process, precise control of the amount of hydrogen charged is critical to ensure that the hydrogen storage material reaches a predetermined hydrogen content. However, the existing hydrogen charging method lacks an accurate hydrogen charging amount constraint mechanism, and the hydrogen charging amount cannot be accurately controlled to meet the requirement of the expected hydrogen content of the material, so that the actual hydrogen content of the material after charging is different from the expected value, and the evaluation of the hydrogen absorption performance and the hydrogen storage capacity of the material is affected.
In order to better control the hydrogen charging process and accurately evaluate the hydrogen absorption performance and the hydrogen storage capacity of the material, an accurate hydrogen charging amount constraint method capable of solving the problem that the actual hydrogen content of the material after charging is different from an expected value needs to be developed.
Disclosure of Invention
In order to accurately control the hydrogen charge to meet the requirements of the expected hydrogen content of the material, one aspect of the application provides a hydrogen charge constraint method under the condition of material hydrogen content measurement, which comprises the following steps: providing samples of various qualities; measuring at least the pressure drop of each sample during the hydrogen filling process and the actual hydrogen content after the hydrogen filling is finished; constructing a sample database according to the determined characteristic set of the mass, pressure drop and actual hydrogen content of each sample; in the sample database, the relation between the actual hydrogen content and other features is: c (C) H =（K m *Δ P ）/M S Wherein delta is P Representing pressure drop, C H Indicating the actual hydrogen content, M S Representing quality, K m Representing a scale factor; obtaining the mass and target hydrogen content of a material to be charged, and calculating the target pressure drop of the material to be charged by utilizing the relation, wherein the target hydrogen content is substituted into the relation as the actual hydrogen content; according to the target pressure dropCorrespondingly restricting the hydrogen charging amount of the material to be charged in the hydrogen charging process.
In an exemplary embodiment, the method further comprises: obtaining target hydrogen content corresponding to each sample in the sample database; in the sample database, the relationship between the target hydrogen content and other features is: c (C) T =（K*Δ P ）/M S Wherein C T K is a scaling factor before correction for the target hydrogen content; correcting the K value according to the deviation of the actual hydrogen content and the target hydrogen content of each sample to obtain a corrected scale factor K m 。
In one exemplary embodiment, correcting the K value based on the deviation of the actual hydrogen content from the target hydrogen content for each sample includes: calculating the average deviation delta of the actual hydrogen content and the target hydrogen content of each sample C ，Δ C = C Hi - C Ti Wherein C Hi Represents the actual average value of hydrogen content, C Ti Representing a target hydrogen content average value; according to the average deviation delta C Increasing or decreasing the scale factor K such that the average value of the actual hydrogen content approaches or equals the average value of the target hydrogen content, the corrected scale factor K m = K + Δ K Wherein delta is K To be according to the average deviation delta C And (5) determining an adjustment value.
In an exemplary embodiment, the measuring method of the actual hydrogen content includes: the sample is dissolved by a chemical dissolution method to promote the release of hydrogen, and the content of the released hydrogen is measured by a hydrogen measuring device to be taken as the actual hydrogen content of the sample.
In an exemplary embodiment, the pressure drop is a difference between pressures of a space formed by communication of at least two chambers at the beginning and the end of charging, expressed as: delta P= P I - P E Wherein P is I Represents the initial pressure, P E Representing the final pressure.
In an exemplary embodiment, the at least two chambers are a metering chamber and a vacuum chamber, and hydrogen enters the vacuum chamber along the metering chamber and then enters the material to be charged along the vacuum chamber during the charging process.
In one exemplary embodiment, correspondingly constraining the hydrogen charge of the material to be charged during the charging process according to the target pressure drop includes: and monitoring the current pressure drop of the space in the hydrogen charging process, and stopping hydrogen charging when the current pressure drop is measured to reach the target pressure drop.
In an exemplary embodiment, the sample database is further provided with the following features: a hydrogen absorption mass, the hydrogen absorption mass having a relationship with the mass of the sample and the actual hydrogen content: bxC =m S *C H Wherein BxC represents a hydrogen absorption mass; the method further comprises the steps of: a fit equation is established to describe the relationship between the hydrogen absorption mass and the pressure drop, in which the pressure drop is on the abscissa and the hydrogen absorption mass is on the ordinate.
In order to accurately control the hydrogen charge to meet the requirements of the expected hydrogen content of the material, one aspect of the present application provides a hydrogen charge restraint device under material hydrogen content determination conditions comprising a processor and a memory communicatively coupled to the processor, the memory storing instructions that, when executed by the processor, perform operations comprising: obtaining at least the measured pressure drop of the samples with various masses in the hydrogen charging process and the actual hydrogen content after the hydrogen charging is finished; constructing a sample database according to the determined characteristic set of the mass, pressure drop and actual hydrogen content of each sample; in the sample database, the relation between the actual hydrogen content and other features is: c (C) H =（K m *Δ P ）/M S Wherein delta is P Representing pressure drop, C H Indicating the actual hydrogen content, M S Representing quality, K m Representing a scale factor; obtaining the mass and target hydrogen content of a material to be charged, and calculating the target pressure drop of the material to be charged by utilizing the relation, wherein the target hydrogen content is substituted into the relation as the actual hydrogen content; and correspondingly restricting the hydrogen charging amount of the material to be charged in the hydrogen charging process according to the target pressure drop.
In order to accurately control the hydrogen filling amount to meet the requirement of the expected hydrogen content of the material, one aspect of the application provides hydrogen filling amount constraint equipment under the condition of measuring the hydrogen content of the material, which comprises a hydrogen filling device and the hydrogen filling amount constraint device; wherein the hydrogen charging amount constraint device is used for controlling the hydrogen charging device.
Based on the above, the application constructs a sample database and establishes a relation between the actual hydrogen content and other characteristics by measuring the mass, pressure drop and characteristic set of the actual hydrogen content of each sample; when the material to be charged is charged, the target pressure drop is calculated according to the relation, so that the charging amount of the material to be charged in the charging process is accurately constrained based on the target pressure drop, the deviation between the actual hydrogen content and the expected value is effectively eliminated, the material to be charged is ensured to reach the preset hydrogen content, the accuracy of the charging process is improved, and the performance and the hydrogen storage efficiency of the material to be charged are further optimized.
Drawings
Having more clearly described embodiments of the present application or solutions in the prior art, the following description of the embodiments or the drawings required for the description of the prior art will briefly be presented, it being obvious that the drawings in the following description are only embodiments of the present application and that other drawings may be obtained from the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow diagram illustrating a method of constraining hydrogen charge provided by one or more embodiments of the present application;
FIG. 2 illustrates a schematic diagram of a hydrogen flow path during material charging provided by one or more embodiments of the present application;
FIG. 3 is a schematic diagram illustrating a flow chart for measuring actual hydrogen content provided by one or more embodiments of the present application;
FIG. 4 is a schematic diagram illustrating an optimization flow of the relationship between actual hydrogen content and other features provided by one or more embodiments of the present application;
FIG. 5 illustrates a scale factor correction flow diagram provided by one or more embodiments of the application;
FIG. 6 is a schematic diagram illustrating a fit between hydrogen absorption mass and pressure drop provided by one or more embodiments of the present application;
FIG. 7 is a schematic block diagram illustrating a hydrogen charge restraint device provided by one or more embodiments of the present application;
FIG. 8 is a schematic block diagram of a hydrogen charge restraint device provided by one or more embodiments of the present application;
fig. 9 is a schematic block diagram of a hydrogen charging device according to one or more embodiments of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
The applicant has previously filed and disclosed a patent document (CN 113697768A) describing a high-precision hydrogen charging control device, a hydrogen charging control method and apparatus, and briefly, the document mainly describes a hydrogen charging control device composed of a hydrogen generator, a metering chamber, a vacuum chamber and a tube furnace, and a method of controlling hydrogen charging based on the device, the main object of the method being to control the metering chamber to take a preset amount of hydrogen from the hydrogen generator and to deliver the hydrogen to the vacuum chamber for the material to be hydrogen absorbed by hydrogen in a hydrogen charging environment. In the method, the control principle of the hydrogen charge amount is to determine the initial pressure of the metering chamber according to the final pressure of a space formed between the vacuum chamber and the metering chamber after the material to be hydrogen-absorbed absorbs hydrogen, the mass of the material to be hydrogen-absorbed and the expected value of the hydrogen absorption amount (hydrogen content), and the state of the corresponding valve is controlled to enable the metering chamber to acquire the preset amount of hydrogen from the hydrogen generator. However, according to this method, there is a difference between the actual hydrogen content of the charged material and the expected value, which may be caused by differences in material characteristics, shape/quality, and activity of hydrogen, etc., and therefore, it is necessary to further optimize the charging control method to precisely control the charging amount and ensure that the charged material reaches the expected hydrogen content.
Certain embodiments of the present application include a method of constraining hydrogen charge under material hydrogen content determination conditions, the disclosed method of constraining hydrogen charge aiming at providing a method capable of accurately controlling hydrogen charge to ensure that the hydrogen charged material reaches a predetermined hydrogen content.
FIG. 1 is a flow diagram illustrating a method of constraining hydrogen charge provided by one or more embodiments of the present application. Referring to FIG. 1, in some embodiments of the application, the hydrogen charge constraint method 10 is divided into steps consisting of S11-S15.
S11, providing samples with various qualities.
The described sample refers to the hydrogen charging material after the hydrogen charging experiment is completed, and the material to be charged can be selected as the sample according to the requirement after the hydrogen charging experiment is performed; the described provision of samples of various masses means provision of samples of various masses measured prior to performing the hydrogen filling experiments, i.e. the masses of these samples have been accurately measured prior to performing the hydrogen filling experiments.
The weighing means employed may be, for example, a precision balance or other weighing device, and each sample is weighed and recorded following the corresponding standard measurement procedures and operating specifications; during weighing, care needs to be taken with respect to the sensitivity and accuracy of the weighing tool to ensure that the resulting mass data is reliable and accurate. The samples provided may be different batches of material produced, different shapes or sizes, or products from different suppliers; by covering multiple mass ranges of samples, the relationship between the charge and the different mass materials can be more fully understood and accurate data support is provided for subsequent charge constraints.
S12, measuring at least the pressure drop of each sample in the hydrogen charging process and the actual hydrogen content after the hydrogen charging is finished.
In this step, the pressure drop during the charging process and the actual hydrogen content after the end of the charging process are measured for each sample to obtain the key data of the sample during the charging process.
According to the requirement, monitoring the sample to be charged in the process of charging hydrogenThe pressure difference generated by the chambers, namely the pressure drop, the pressure drop refers to the difference value of the corresponding pressure of the space formed by the communication of at least two chambers at the beginning of charging and the end of charging, and the difference value is expressed as: delta P= P I - P E Wherein P is I Represents the initial pressure, P E Represents the final pressure, delta P Representing the pressure drop.
FIG. 2 illustrates a schematic diagram of a hydrogen flow path during a material charging process provided by one or more embodiments of the present application. Referring to fig. 2, in some embodiments of the application, the space is formed by two chambers E1, E2 in communication, the chambers E1 and E2 being connected to each other by a transmission medium, such as a pipe, so that hydrogen can be transferred between the two chambers. During the charging process, hydrogen gas enters the chamber E2 from the chamber E1, and then enters the high-temperature environment realized based on the heating control from the chamber E2 to charge the material transferred into the high-temperature environment. Of course, in alternative embodiments, the chambers E1 and E2 may be designed to communicate with each other with near or no gaps, such as by shortening the tubing between chambers E1 and E2 to reduce the resistance to flow and time delay of hydrogen between the two chambers, or by eliminating tubing between chambers E1 and E2, and instead communicating with each other through at least one gas delivery orifice.
For example, when the connection between the chambers E1 and E2 is achieved by a pipe, a valve D4 may be provided on the pipe between the chambers E1 and E2, and the control of the flow of hydrogen from the chamber E1 into the chamber E2 is achieved by the control of the valve D4, the provision of the valve D4 allowing the flow amount of hydrogen to be adjusted as needed to restrict the flow amount of hydrogen from the chamber E1 into the chamber E2. In addition, a pipeline may be further disposed upstream of the chamber E1 to enable hydrogen to enter the chamber E1 along the pipeline, and a valve D3 is disposed on the pipeline upstream of the chamber E1, so that the chamber E1 obtains a preset amount of hydrogen from the pipeline upstream through control of the valve D3.
It should be understood that the space formed by chambers E1 and E2 includes chambers E1, E2 and the tubing between chambers E1 and E2.
To achieve pressure drop measurement during charging, pressure transmission can be usedThe sensor and the monitoring equipment are used for ensuring that accurate pressure drop values are obtained, and the pressure drop condition of the sample in the hydrogen charging process is known by recording and tracking the change of the pressure difference in real time. At the initial stage of the charging process, the initial pressure P of the space is measured and recorded I Recording the final pressure P of the space after the end of the hydrogen filling E Pressure drop delta P Can be obtained by calculating the difference, i.e. delta P = P I - P E . Illustratively, chambers E1, E2 are each provided with a pressure sensor.
In some embodiments of the present application, the chambers E1 and E2 are a metering chamber and a vacuum chamber, respectively, along which hydrogen gas enters the vacuum chamber during the charging process, and then along which the material to be charged is introduced.
After the hydrogen charge is completed, the actual hydrogen content of each selected sample needs to be measured to obtain the actual hydrogen content of the sample after the hydrogen charge.
In some embodiments of the application, the actual hydrogen content of each sample is measured in the following manner: the sample is dissolved by a chemical dissolution method to promote the release of hydrogen, and the content of the released hydrogen is measured by a hydrogen measuring device to be taken as the actual hydrogen content of the sample.
Specifically, the sample is subjected to chemical dissolution treatment firstly, and certain chemical reagents and conditions can be utilized in the process to effectively release hydrogen in the sample; the released hydrogen content is then measured using a hydrogen measuring device, which is generally based on gas measurement principles, such as gas electrochemical sensors, gas chromatographs, etc., capable of accurately detecting the hydrogen content. The method for measuring the hydrogen content in the sample by combining the chemical dissolution method with the hydrogen measuring device can obtain the actual released hydrogen content in the sample, namely the actual hydrogen content of the sample, has high accuracy and repeatability, and can provide accurate assessment of hydrogen adsorption and release in the sample hydrogen charging process. It should be noted that in selecting the chemical dissolution method and the hydrogen gas measurement device, it is ensured that they match the properties of the sample to be measured and the actual hydrogen content measurement requirements, to ensure the accuracy of the measurement results, and to provide useful information about the actual hydrogen content of the sample.
FIG. 3 illustrates a schematic diagram of a measurement flow of actual hydrogen content provided by one or more embodiments of the application. Referring to fig. 3, an example of measurement of the actual hydrogen content of one sample is:
a. sample preparation
The sample of material to be measured is selected and corresponding sample preparation conditions are prepared, which may be cut to an appropriate size and shape, for example.
b. Chemical dissolution treatment
The sample is placed in a suitable chemical solution to facilitate the release of hydrogen therefrom, and appropriate dissolution agents and conditions are selected according to the nature and requirements of the sample, and the dissolution process may require a certain time and temperature control. Illustratively, a sodium hydroxide solution (NaOH) may be selected as the chemical dissolution agent, which has a certain alkalinity, which may promote the release of hydrogen gas in the sample, and the (NaOH) solution may be prepared at an appropriate concentration and volume ratio in preparation for the chemical solution.
c. Hydrogen measurement device preparation
The hydrogen measurement device is prepared to ensure its proper operation and connection to the sample, and depending on the characteristics of the measurement device, calibration and setup may be required. For example, a hydrogen measuring device based on a gas electrochemical sensor, such as a common hydrogen sensor of various types, can detect the concentration of hydrogen and output a corresponding electric signal by adopting a specific electrochemical reaction principle, and the sensor generally has the characteristics of high sensitivity and quick response and is suitable for measuring the content of hydrogen.
d. Hydrogen measurement
The dissolved sample is placed in a hydrogen measuring device, which is activated for the detection of the hydrogen content, which may be based on different principles, such as a gas electrochemical sensor or a gas chromatograph.
e. Measurement result record
The amount of hydrogen released from the sample is recorded based on the display or output of the hydrogen measuring device, and this value is used as the actual hydrogen content of the sample for subsequent analysis and evaluation.
Through the measurement example of the actual hydrogen content of the sample, the hydrogen content released in the sample can be accurately measured by using a chemical dissolution method and a hydrogen measurement device, so that the actual hydrogen content of the sample is obtained, and the measurement result can provide an important data basis for hydrogen filling quantity constraint, thereby helping to optimize hydrogen filling control and evaluate the hydrogen absorption performance of the material.
S13, constructing a sample database according to the determined characteristic set of the mass, pressure drop and actual hydrogen content of each sample; in the sample database, the relation between the actual hydrogen content and other features is: c (C) H =（K m *Δ P ）/M S Wherein delta is P Representing pressure drop, C H Indicating the actual hydrogen content, M S Representing quality, K m Representing the scale factor.
After acquiring data such as mass, pressure drop, and actual hydrogen content of each sample measured based on the execution of S11 and S12, a sample database is constructed based on these data. Specifically, based on the collected sample data, taking the quality, the pressure drop and the actual hydrogen content as elements of a feature set, for each sample, integrating the feature values together to form a feature set of the sample, and integrating the feature sets of all the samples into a sample database, wherein the sample database can adopt a proper data structure and a storage mode so as to effectively manage and inquire the data; in the sample database, each sample is associated with its corresponding feature set for subsequent analysis and calculation. Furthermore, the mathematical relationship between the characteristics is described by establishing the above-mentioned relational expression according to the relationship between the actual hydrogen content and other characteristics, and the relational expression is obtained according to experimental data and statistical analysis, so that the relationship between the actual hydrogen content and the pressure drop and quality can be accurately described.
By way of example, a sample database constructed from a set of characteristics of mass, pressure drop, and actual hydrogen content of each sample is shown in table 1 below, with more than 100 sets of sample data having been actually measured and incorporated into the sample database, table 1 being only a portion of an exemplary sample database.
TABLE 1
S14, obtaining the mass and the target hydrogen content of the material to be charged, and calculating the target pressure drop of the material to be charged by utilizing the relation, wherein the target hydrogen content is substituted into the relation as the actual hydrogen content.
In this step, the mass of the material to be charged and the target hydrogen content are obtained in order to determine the target pressure drop required by the material to be charged in order to achieve the desired hydrogen content constraint, the purpose of this step being to ensure that the material to be charged reaches a predetermined hydrogen content during charging to meet the specific application requirements or performance requirements.
Specifically, by obtaining the mass of the material to be charged, the initial state of charging can be accurately determined, the mass is an important parameter in the charging process, and is directly related to the hydrogen absorption capacity of the material and the hydrogen content after charging, the total weight of the material to be charged is reflected, and by accurately measuring and recording the mass of the material to be charged, an accurate starting point can be ensured at the beginning of the charging process, that is, a reference value is provided, so that the charging amount can be adjusted according to the target hydrogen content and the pressure drop later.
The target hydrogen content represents the hydrogen content level that the material to be charged is expected to achieve. During the hydrogen charging process, it is generally desirable that the material to be charged be able to absorb a predetermined amount of hydrogen to meet specific hydrogen content requirements; by setting the target hydrogen content, the target of the hydrogen charging process can be clarified, can be determined according to the actual application requirement, and can be adjusted in laboratory research or industrial production; the target hydrogen content may be used as a reference point in the hydrogen filling control process so that it can be adjusted and controlled according to the difference from the actual hydrogen content.
By utilizing the above relation between the actual hydrogen content and other characteristics, substituting the target hydrogen content as the actual hydrogen content into the relation, and calculating, the target pressure drop of the material to be charged can be obtained, namely, in order to make the actual hydrogen content approach or reach the target hydrogen content, the chambers E1 and E2 are communicated to form the pressure change corresponding to the space. The target pressure drop ensures that the material to be charged absorbs sufficient hydrogen to achieve a predetermined hydrogen content during charging, and depending on the value of the target pressure drop, the pressure or flow rate applied during charging may be adjusted, for example, to ensure that hydrogen is sufficiently drawn into the material and to achieve the desired hydrogen content constraint.
S15, correspondingly restraining the hydrogen charging amount of the material to be charged in the hydrogen charging process according to the target pressure drop.
By controlling the amount of hydrogen charge, it is ensured that the material to be charged reaches a predetermined target pressure drop during charging, in other words, according to the target pressure drop, the amount of hydrogen required by the material to be charged during charging, in other words, by precisely controlling the amount of hydrogen charge, it is ensured that the material to be charged reaches a desired hydrogen content after charging is completed.
For example, when the hydrogen charging process is started, the upper limit of the hydrogen charging amount is determined according to the target pressure drop, namely, the hydrogen charging amount is controlled to be not more than the set target pressure drop, the hydrogen charging amount is monitored in real time in the hydrogen charging process and is compared with the target pressure drop, the hydrogen charging amount can be dynamically adjusted, and the pressure drop of the material to be charged in the hydrogen charging process is ensured to be consistent with the target pressure drop.
The amount of hydrogen charge needs to be constrained during the charging process to ensure that the material to be charged achieves the desired hydrogen content. By way of example, specific restriction means may involve, for example, adjusting the hydrogen supply rate, controlling the charging time, or controlling the flow of hydrogen through adjustment of a valve; in addition, the hydrogen amount required by the material to be charged can be accurately calculated according to the actual hydrogen adsorption performance and the hydrogen charging dynamics, so that the hydrogen charging process is optimized. The method for restraining the hydrogen charging amount of the material to be charged in the hydrogen charging process according to the target pressure drop can ensure that the hydrogen charging process is accurate and controllable, avoid the situation of over-charging or under-charging, further ensure that the material to be charged reaches the expected hydrogen content and ensure the stability of the hydrogen charging process. In addition, by precisely controlling the hydrogen charging amount, the service life of the material to be charged can be prolonged, and the hydrogen storage performance of the material to be charged can be improved.
That is, the method for constraining the hydrogen filling amount can ensure that the difference value of the corresponding pressure of the two communicated chambers reaches the preset target pressure drop at the beginning and the ending of the hydrogen filling of the material to be filled in the hydrogen filling process through accurate constraint of the hydrogen filling amount, thereby realizing the expected hydrogen content level.
In one exemplary implementation of S15, the charging is stopped when the current pressure drop is determined to reach the target pressure drop by monitoring the current pressure drop of the space during the charging.
Specifically, during the hydrogen filling process, the pressure change of the hydrogen filling space (i.e. the space where the chambers E1 and E2 are communicated) is monitored in real time by a pressure sensor or a monitoring device, and pressure drop data measured in real time are recorded by a data acquisition device connected to a computer or a control system, and these data are used for subsequent analysis and control. Before the hydrogen charging process is started, a required target pressure drop is preset, the target pressure drop is determined according to factors such as the hydrogen charging experiment requirement, the characteristics of the material to be charged, the application scene and the like, and the target pressure drop is an important reference standard for controlling the hydrogen charging amount, because when the target pressure drop is reached, the actual hydrogen content of the material to be charged is close to an expected value. During the hydrogen filling process, hydrogen enters the chamber E1 from the hydrogen generator, and hydrogen is allowed to flow from the chamber E1 into the chamber E2 by controlling the states of the corresponding valves. In the hydrogen charging process, the pressure change of the hydrogen charging space is monitored and compared with a preset target pressure drop, and when the pressure drop measured in real time reaches or approaches the target pressure drop, the control system automatically closes the hydrogen charging device to stop the injection of hydrogen so as to avoid excessive hydrogen charging. Once the charging process has stopped, indicating that the material to be charged has reached the target pressure drop, the amount of hydrogen charged may be deemed satisfactory, with the actual hydrogen content of the material to be charged approaching the desired value.
According to the application, through monitoring the pressure drop change of the hydrogen charging space in real time and carrying out adaptive control according to the target pressure drop, the accurate and controllable hydrogen charging process can be ensured, the situation of over-charging or insufficient hydrogen charging is avoided, and the hydrogen content of the material to be charged is ensured to reach the expected value, so that the stability and efficiency of the hydrogen charging process are improved.
FIG. 4 is a schematic diagram illustrating an optimization flow of the relationship between actual hydrogen content and other features provided by one or more embodiments of the present application. Referring to fig. 4, in some embodiments of the present application, the hydrogen charge constraint method 10 is divided into steps S21 and S22 in addition to the steps S11 to S15, where S21 and S22 can be regarded as the preceding steps of S14.
S21, obtaining target hydrogen content corresponding to each sample in the sample database; in the sample database, the relationship between the target hydrogen content and other features is: c (C) T =（K*Δ P ）/M S Wherein C T For the target hydrogen content, K is the scale factor before correction.
The target hydrogen content refers to the level of hydrogen content that the material is expected to achieve during the charging process and may also be considered as a target or expected value for the charging process. In this step, the mass M of each sample is obtained from a sample database S And pressure drop delta of each sample during charging P Then calculating the target hydrogen content C of each sample according to the relation between the target hydrogen content and other characteristics T . Since the K value in this relation is the scale factor before correction, meaning that the K value is not corrected, i.e., is the initial value, in the calculation of the target hydrogen content for each sample, about 440 wppm -1 Measured experimentally; this means that there may be a certain deviation between the calculated target hydrogen content and the actual value.
S22, correcting the K value according to the deviation of the actual hydrogen content and the target hydrogen content of each sample to obtain a corrected scale factor K m 。
A modified example, for example, first calculates an average deviation between the actual hydrogen content and the target hydrogen content for each sample, and then adjusts the K value according to the average deviation so that the modified scale factor K m The deviation between the actual hydrogen content and the target hydrogen content can be reduced. The correction of the K value can be determined according to the average deviation, and when the average deviation between the actual hydrogen content and the target hydrogen content of each sample is larger, the degree of larger K value is correspondingly adjusted; the average deviation is smaller, and the adjustment degree is smaller.
FIG. 5 illustrates a scale factor correction flow diagram provided by one or more embodiments of the application. Referring to fig. 5, in some embodiments of the application, S22 is divided into S221 and S222.
S221, calculating the average deviation delta of the actual hydrogen content and the target hydrogen content of each sample C ，Δ C = C Hi - C Ti Wherein C Hi Represents the actual average value of hydrogen content, C Ti The target hydrogen content average value is represented.
In this step, the actual hydrogen content C of each sample is first obtained from a sample database H And the corresponding target hydrogen content C T Actual hydrogen content C H Is the hydrogen amount actually contained by each sample after the hydrogen charging process is finished and the target hydrogen content C T Is the hydrogen content level that the material to be charged is expected to achieve, calculated in S21, and may also be referred to as the target or expected value of the charging process. Through C Hi - C Ti Calculating the average deviation delta of the actual hydrogen content and the target hydrogen content of each sample C A deviation of the sample hydrogen loading effect from the target value may be obtained, a positive value indicating that the actual hydrogen content average is higher than the target average, a negative value indicating that the actual hydrogen content average is lower than the target average, and a value close to zero indicating that the actual hydrogen content average is nearly identical to the target average.
S222, according to the average deviation delta C Increasing or decreasing the scale factor K such that the average value of the actual hydrogen content approaches or equals the average value of the target hydrogen content, the corrected scale factor K m = K + Δ K Wherein delta is K To be according to the average deviation delta C And (5) determining an adjustment value.
In this step, the average deviation Δ calculated in S221 is used C To adjust the scaling factor K to achieve a correction to the average of the actual hydrogen content if delta C Is positive, meaning that the actual hydrogen content average is higher than the target hydrogen content average, i.e., the target average, the scale factor K is moderately reduced, thereby reducing the actual hydrogen content average to be close to or equal toAt a target average; conversely, if delta C Negative, meaning that the actual hydrogen content average is below the target average, then the scale factor K will be moderately increased to increase the actual hydrogen content average to be near or equal to the target average; the increased or decreased value is the adjustment value delta K By taking into account the mean deviation delta C The positive and negative conditions of (2) to adjust the scale factor K to obtain a corrected scale factor K m . In the charging control process, K will be used m To calculate a target pressure drop of the material to be charged, thereby precisely controlling the amount of hydrogen charged, and ensuring that the material to be charged reaches a desired hydrogen content level.
The combination of S221 and S222 realizes the correction of the comparison factor K, thereby effectively eliminating or reducing the deviation between the actual hydrogen content and the target hydrogen content, improving the accuracy and precision of the hydrogen charging process, and further optimizing the performance and the hydrogen storage efficiency of the hydrogen storage material.
With the increasing of the sample database, more experimental data of the sample are obtained, the data can more comprehensively reflect the actual situation of the hydrogen charging process under various different conditions, and the value of the scale factor K, namely the corrected scale factor K, can be more accurately determined by analyzing the data m The accuracy of the scaling factor K is relative to the calculation of the pressure drop delta before charging P It is important that when the scale factor K is accurate, the target pressure drop of the material to be charged can be accurately calculated, thereby determining the amount of hydrogen required in the charging process. Due to the accuracy of the scaling factor K and the pressure drop delta calculated prior to charging P Accuracy of (C) actual hydrogen content H Will be closer to the intended target hydrogen content C T This means that by accurate calculation and accurate control of the amount of hydrogen charged prior to charging, accurate control of the hydrogen content of the material to be charged to a desired target level can be achieved.
Therefore, along with the increase of the sample database and the improvement of the accuracy of the scale factor K value, the hydrogen charging process can be better optimized, the actual hydrogen content of the material after hydrogen charging is ensured to be closer to the expected value, and the performance and the hydrogen storage efficiency of the hydrogen storage material are further improved.
FIG. 6 is a schematic diagram illustrating a fit between hydrogen absorption mass and pressure drop provided by one or more embodiments of the present application. Referring to FIG. 6, in some embodiments of the application, the sample database is further characterized by the following features: hydrogen absorption quality.
The relationship between the hydrogen absorption mass and the mass of the sample and the actual hydrogen content is: bxC =m S *C H Wherein BxC represents the hydrogen absorption mass.
The hydrogen charge constraint method further includes: a fit equation is established to describe the relationship between the hydrogen absorption mass and the pressure drop, in which the pressure drop is on the abscissa and the hydrogen absorption mass is on the ordinate.
The sample database is characterized by the quality of hydrogen absorption in addition to the quality, pressure drop and actual hydrogen content of each sample. To better understand the relationship between the hydrogen absorption mass and the pressure drop, a fitting equation was established describing the trend between the hydrogen absorption mass and the pressure drop, in which a mathematical model BxC =k was obtained by fitting the hydrogen absorption mass and the pressure drop data in the sample database with the pressure drop on the abscissa and the hydrogen absorption mass on the ordinate m * Δ P The model can describe the relationship between the hydrogen absorption quality and the pressure drop more accurately; by means of the fitting equation, the hydrogen absorption quality corresponding to the material to be charged under the specific pressure drop condition can be predicted.
Wherein the fit relationship between hydrogen absorption mass and pressure drop shown in fig. 6 was constructed based on the data in table 2, it being understood that table 2 is only a partial example sample database.
TABLE 2
The hydrogen filling quantity constraint method combines the hydrogen absorption quality characteristics in the sample database and the prediction capability of the fitting equation, so that the hydrogen filling process is more accurate and controllable, the actual hydrogen content of the material after hydrogen filling is ensured to be more approximate to an expected value by optimizing the control of the hydrogen filling quantity, and the performance and the hydrogen storage efficiency of the hydrogen storage material are further improved.
Certain embodiments of the present application include a hydrogen charge restraint device under material hydrogen content measurement conditions, the disclosed hydrogen charge restraint device being directed to providing a device capable of accurately controlling the charge to ensure that the hydrogen charged material reaches a predetermined hydrogen content.
Fig. 7 is a schematic block diagram of a hydrogen charge restraint device provided by one or more embodiments of the present application. Referring to fig. 7, in some embodiments of the application, the hydrogen charge restraint device 30 includes a processor 31 and a memory 32 communicatively coupled to the processor 31.
Wherein the memory 32 stores instructions that, when executed by the processor 31, perform operations comprising:
obtaining at least the measured pressure drop of the samples with various masses in the hydrogen charging process and the actual hydrogen content after the hydrogen charging is finished;
constructing a sample database according to the determined characteristic set of the mass, pressure drop and actual hydrogen content of each sample; in the sample database, the relation between the actual hydrogen content and other features is: c (C) H =（K m *Δ P ）/M S Wherein delta is P Representing pressure drop, C H Indicating the actual hydrogen content, M S Representing quality, K m Representing a scale factor;
obtaining the mass and target hydrogen content of a material to be charged, and calculating the target pressure drop of the material to be charged by utilizing the relation, wherein the target hydrogen content is substituted into the relation as the actual hydrogen content;
and correspondingly restricting the hydrogen charging amount of the material to be charged in the hydrogen charging process according to the target pressure drop.
In some embodiments of the application, the instructions, when executed by the processor 31, further perform operations comprising:
obtaining target hydrogen content corresponding to each sample in the sample database; in the sample database, the relationship between the target hydrogen content and other features is: c (C) T =（K*Δ P ）/M S Wherein C T To target hydrogenThe content, K, is the scale factor before correction; and
correcting the K value according to the deviation of the actual hydrogen content and the target hydrogen content of each sample to obtain K m 。
In some embodiments of the application, the instructions, when executed by the processor 31, further perform operations comprising:
calculating the average deviation delta of the actual hydrogen content and the target hydrogen content of each sample C ，Δ C = C Hi - C Ti Wherein C Hi Represents the actual average value of hydrogen content, C Ti Representing a target hydrogen content average value;
according to the average deviation delta C Increasing or decreasing the scale factor K such that the average value of the actual hydrogen content approaches or equals the average value of the target hydrogen content, the corrected scale factor K m = K + Δ K Wherein delta is K To be according to the average deviation delta C And (5) determining an adjustment value.
The above operations performed by the processor 31 may refer to the foregoing embodiments in the specific implementation process, with corresponding technical effects.
In some embodiments of the application, the instructions stored in memory 32 may be computer programs.
Illustratively, the computer program may be partitioned into one or more modules/units that are stored in the memory 32 and executed by the processor 31 to complete the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing the specified functions, which are used to describe the execution of the computer program in the present application.
In some embodiments of the application, the processor 31 described may be, by way of example, a central processing unit (CentralProcessingUnit, CPU), but may be other general purpose processors, digital signal processors (DigitalSignalProcessor, DSP), application specific integrated circuits (ApplicationSpecificIntegratedCircuit, ASIC), off-the-shelf programmable gate arrays (Field-ProgrammableGateArray, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and the processor 31 is a control center of the hydrogen charge restraint device 30, connecting various parts of the overall device using various interfaces and lines.
The memory 32 may be used to store the computer program and/or module, and the processor 31 may implement various functions of the hydrogen charge restraint device 30 by executing or executing the computer program and/or module stored in the memory 32 and invoking data stored in the memory 32. The memory 32 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory 32 may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, a plug-in hard disk, a smart memory card (SmartMediaCard, SMC), a secure digital (SecureDigital, SD) card, a flash card (FlashCard), at least one magnetic disk storage device, a flash memory device, or other volatile solid state storage device.
Fig. 8 is a schematic block diagram of a hydrogen charge restraint device provided by one or more embodiments of the present application. Referring to fig. 8, in some embodiments of the application, the hydrogen charge restraint device 50 includes two main components: a charging device 40 and a charging amount restriction device 30; wherein the hydrogen charge amount restriction device 30 is used to control the hydrogen charging device 40.
The hydrogen charging device 40 is a device for charging hydrogen into a material to be charged, and has a main function of injecting hydrogen into the material to be charged to make it absorb hydrogen and store, and the hydrogen charging device 40 generally includes components such as a hydrogen generator, a metering chamber, a vacuum chamber, a tube furnace, etc., through which accurate hydrogen charging operation can be achieved to meet the requirement that the material to be charged reaches a predetermined hydrogen content.
The hydrogen filling amount constraint device 30 is a device for controlling the hydrogen filling device 40, and in the hydrogen filling process, the hydrogen filling device 40 can be regulated and controlled by the hydrogen filling amount constraint device 30, and the hydrogen filling amount constraint device 30 calculates the target pressure drop of the material to be filled according to the characteristics of the mass, the pressure drop, the actual hydrogen content and the like of the material to be filled based on a pre-established sample database, so as to determine the required hydrogen filling amount.
Specifically, the hydrogen charge restriction device 30 adjusts the scale factor K according to the deviation between the actual hydrogen content and the target hydrogen content of the hydrogen charging device 40, and calculates the corrected scale factor K m Then, the charging device 40 generates a corrected scale factor K m To control the hydrogen charge to ensure that the material to be charged achieves a target pressure drop during charging and to achieve the desired hydrogen content level.
By precisely controlling the hydrogen charging amount constraint device 30, the hydrogen charging device 40 can enable the material to be charged to absorb the exactly required hydrogen amount in the hydrogen charging process according to the constraint of the hydrogen charging amount, thereby realizing precise control of the hydrogen content and optimizing the hydrogen absorption performance and the hydrogen storage efficiency of the material.
Fig. 9 is a schematic block diagram of a hydrogen charging device according to one or more embodiments of the present application. Referring to fig. 9, in the embodiment of the present application, the hydrogen charging device 40 is a complex system, and in addition to components including the hydrogen generator, the metering chamber E1, the vacuum chamber E2, and the tube furnace, key components including the molecular vacuum pump P2, the mechanical vacuum pump P1, the valves C1, C2, C3 and D1, D2, D3, D4, D5, and the sensors S1, S2 are integrated. The components and the control principle realize the accurate hydrogen charging of the material to be charged together, and provide powerful technical support for the research and application of the hydrogen storage material.
In the description of the present specification, a description referring to terms "an embodiment," "some embodiments," "example embodiments," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (12)
1. The hydrogen charging amount constraint method under the material hydrogen content measurement condition is characterized by comprising the following steps:
providing samples of various qualities;
measuring at least the pressure drop of each sample during the hydrogen filling process and the actual hydrogen content after the hydrogen filling is finished;
constructing a sample database according to the determined characteristic set of the mass, pressure drop and actual hydrogen content of each sample; in the sample database, the relation between the actual hydrogen content and other features is: c (C) H =（K m *Δ P ）/M S Wherein delta is P Representing pressure drop, C H Indicating the actual hydrogen content, M S Representing quality, K m Representing a scale factor;
obtaining the mass and target hydrogen content of a material to be charged, and calculating the target pressure drop of the material to be charged by utilizing the relation, wherein the target hydrogen content is substituted into the relation as the actual hydrogen content; and
and correspondingly restricting the hydrogen charging amount of the material to be charged in the hydrogen charging process according to the target pressure drop.
2. The method of constraining hydrogen charge under hydrogen content determination of a material of claim 1, further comprising:
obtaining target hydrogen content corresponding to each sample in the sample database; in the sample database, the relationship between the target hydrogen content and other features is: c (C) T =（K*Δ P ）/M S Wherein C T K is a scaling factor before correction for the target hydrogen content; and
correcting the K value according to the deviation of the actual hydrogen content and the target hydrogen content of each sample to obtain a corrected scale factor K m 。
3. The method for limiting hydrogen charge under hydrogen content measurement conditions of a material according to claim 2, wherein correcting the K value according to a deviation of an actual hydrogen content from a target hydrogen content of each sample comprises:
calculating the average deviation delta of the actual hydrogen content and the target hydrogen content of each sample C ，Δ C = C Hi - C Ti Wherein C Hi Represents the actual average value of hydrogen content, C Ti Representing a target hydrogen content average value;
according to the average deviation delta C Increasing or decreasing the scale factor K such that the average value of the actual hydrogen content approaches or equals the average value of the target hydrogen content, the corrected scale factor K m = K + Δ K Wherein delta is K To be according to the average deviation delta C And (5) determining an adjustment value.
4. The method for constraining hydrogen charge under the condition of measuring hydrogen content of material according to claim 1, wherein the measuring mode of the actual hydrogen content comprises:
the sample is dissolved by a chemical dissolution method to promote the release of hydrogen, and the content of the released hydrogen is measured by a hydrogen measuring device to be taken as the actual hydrogen content of the sample.
5. The method for limiting hydrogen charge under hydrogen content determination conditions according to claim 1, wherein the pressure drop is such that a space formed by at least two communicated chambers is divided between initial charging and final chargingThe difference in pressure is expressed as: delta P= P I - P E Wherein P is I Represents the initial pressure, P E Representing the final pressure.
6. The method according to claim 5, wherein the at least two chambers are a measuring chamber and a vacuum chamber, and hydrogen enters the vacuum chamber along the measuring chamber and then enters the material to be charged along the vacuum chamber during the charging process.
7. The method for constraining hydrogen charge under hydrogen content measurement conditions of a material according to claim 5 or 6, wherein the constraining the hydrogen charge of the material to be charged in the hydrogen charging process according to the target pressure drop corresponds to the method comprises:
And monitoring the current pressure drop of the space in the hydrogen charging process, and stopping hydrogen charging when the current pressure drop is measured to reach the target pressure drop.
8. The method of constraining hydrogen loading under hydrogen content of a material according to any one of claims 1 to 6, wherein the sample database further comprises the following features:
a hydrogen absorption mass, the hydrogen absorption mass having a relationship with the mass of the sample and the actual hydrogen content: bxC =m S *C H Wherein BxC represents a hydrogen absorption mass;
the method further comprises the steps of:
a fit equation is established to describe the relationship between the hydrogen absorption mass and the pressure drop, in which the pressure drop is on the abscissa and the hydrogen absorption mass is on the ordinate.
9. The hydrogen charge constraint device under the material hydrogen content measurement condition is characterized by comprising:
a processor;
a memory communicatively coupled to the processor, the memory storing instructions that, when executed by the processor, perform operations comprising:
obtaining at least the measured pressure drop of the samples with various masses in the hydrogen charging process and the actual hydrogen content after the hydrogen charging is finished;
constructing a sample database according to the determined characteristic set of the mass, pressure drop and actual hydrogen content of each sample; in the sample database, the relation between the actual hydrogen content and other features is: c (C) H =（K m *Δ P ）/M S Wherein delta is P Representing pressure drop, C H Indicating the actual hydrogen content, M S Representing quality, K m Representing a scale factor;
obtaining the mass and target hydrogen content of a material to be charged, and calculating the target pressure drop of the material to be charged by utilizing the relation, wherein the target hydrogen content is substituted into the relation as the actual hydrogen content; and
and correspondingly restricting the hydrogen charging amount of the material to be charged in the hydrogen charging process according to the target pressure drop.
10. The hydrogen charge restraint device under material hydrogen content determination conditions of claim 9, wherein the instructions, when executed by the processor, further perform operations comprising:
obtaining target hydrogen content corresponding to each sample in the sample database; in the sample database, the relationship between the target hydrogen content and other features is: c (C) T =（K*Δ P ）/M S Wherein C T K is a scaling factor before correction for the target hydrogen content; and
correcting the K value according to the deviation of the actual hydrogen content and the target hydrogen content of each sample to obtain a corrected scale factor K m 。
11. The hydrogen charge restraint device in accordance with claim 10, wherein the instructions, when executed by the processor, further perform operations comprising:
Calculating the average deviation delta of the actual hydrogen content and the target hydrogen content of each sample C ，Δ C = C Hi - C Ti Wherein C Hi Represents the actual average value of hydrogen content, C Ti Representing a target hydrogen content average value;
according to the average deviation delta C Increasing or decreasing the scale factor K such that the average value of the actual hydrogen content approaches or equals the average value of the target hydrogen content, the corrected scale factor K m = K + Δ K Wherein delta is K To be according to the average deviation delta C And (5) determining an adjustment value.
12. The hydrogen charging amount constraint device under the material hydrogen content measurement condition is characterized by comprising:
a hydrogen charging device; and
the hydrogen charge restraint device of any one of claims 9 to 11; wherein the hydrogen charging amount constraint device is used for controlling the hydrogen charging device.
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| CN101748352A (en) * | 2010-01-22 | 2010-06-23 | 中国航空工业集团公司北京航空制造工程研究所 | Method of establishing precise control model of hydrogen content in hydrogen treatment of titanium alloy |
| CN112908424A (en) * | 2021-01-21 | 2021-06-04 | 上海海事大学 | Method for reducing octane number loss in catalytic gasoline cracking process of S-zorb device |
| CN113701045A (en) * | 2021-09-02 | 2021-11-26 | 西北工业大学太仓长三角研究院 | Multi-stage hydrogen charging control device, multi-stage hydrogen charging control method and equipment |
| CN113739067A (en) * | 2021-09-02 | 2021-12-03 | 西北工业大学太仓长三角研究院 | Dual-cavity-based hydrogen charging control device, hydrogen charging control method and equipment |
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| CN101748352A (en) * | 2010-01-22 | 2010-06-23 | 中国航空工业集团公司北京航空制造工程研究所 | Method of establishing precise control model of hydrogen content in hydrogen treatment of titanium alloy |
| CN112908424A (en) * | 2021-01-21 | 2021-06-04 | 上海海事大学 | Method for reducing octane number loss in catalytic gasoline cracking process of S-zorb device |
| CN113701045A (en) * | 2021-09-02 | 2021-11-26 | 西北工业大学太仓长三角研究院 | Multi-stage hydrogen charging control device, multi-stage hydrogen charging control method and equipment |
| CN113739067A (en) * | 2021-09-02 | 2021-12-03 | 西北工业大学太仓长三角研究院 | Dual-cavity-based hydrogen charging control device, hydrogen charging control method and equipment |
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