A natural gas hydrogen blending premix control method and system applied to a setting machine

Abstract

The application provides a natural gas hydrogen mixing premixing control method and system applied to a setting machine, belongs to the pipeline technical field, and specifically comprises the following steps: a hydrogen production device and a natural gas supply device are connected through a pipeline, natural gas and hydrogen are mixed after entering a mixing device, the mixing device is responsible for the storage and treatment of the natural gas and hydrogen, and the mixed natural gas and hydrogen are provided to the setting machine; the setting machine utilizes the mixed natural gas and hydrogen for heating treatment, and utilizes the heat generated by the heating treatment for setting treatment of a setting treatment target, thereby improving the reliability of the natural gas hydrogen mixing premixing control treatment applied to the setting machine.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pipelines, and particularly relates to a natural gas hydrogen blending premixing control method and system applied to a setting machine. BACKGROUND

[0002] When setting treatment of clothes is performed, natural gas is often used to dry and set by burning in a burner, so that carbon emission is inevitably high.

[0003] Therefore, in order to solve the above technical problems, the prior art reduces carbon emission by hydrogen blending with natural gas, and specific similar technical solutions are given in the invention patent applications CN217635103U and CN115127032A, but the prior art has the following problems:

[0004] In the process of hydrogen blending premixing control, in order to reduce carbon emission, the hydrogen blending ratio is often increased on the basis of meeting temperature control temperature, and because the temperature control ranges of different setting stages are deviated, if the blending capacity is not adjusted, the adjustment efficiency of the hydrogen blending ratio is difficult to meet the requirements, and if a lower blending capacity is used at the beginning, when the hydrogen blending concentration of the hydrogen production device is abnormal, the temperature control reliability of the setting machine is difficult to meet the requirements, so it is urgent to determine the blending capacity adjustment processing strategy of different setting stages according to the variation of the hydrogen blending ratio of different setting stages and the capacity demand of the later setting stage.

[0005] To solve the above technical problems, the application provides a natural gas hydrogen blending premixing control method and system applied to a setting machine. SUMMARY

[0006] To achieve the object of the application, the application adopts the following technical solutions:

[0007] Specifically, the application provides a natural gas hydrogen blending premixing control method applied to a setting machine, which specifically includes the following steps:

[0008] S1, based on a setting treatment target of the setting machine, determining temperature control ranges in different setting stages, and determining optimal hydrogen blending ratios of the setting stages according to historical over-temperature data of the hydrogen blending ratios in the temperature control ranges.

[0009] S2, when it is determined that the adjustment of the mixing amount of the mixing device needs to be performed according to the variation of the optimal hydrogen mixing ratio between the current setting stage and the next setting stage and the historical over-temperature data of the optimal hydrogen mixing ratio in the next setting stage, proceeds to the next step;

[0010] S3, according to the variation of the optimal hydrogen mixing ratio between the current setting stage and the next setting stage and the historical temperature control data of the setting machine at the optimal hydrogen mixing ratio, determines the capacity switching matching type of different setting stages;

[0011] S4, according to the capacity switching matching type of the current setting stage, the capacity switching matching type of different future setting stages and the capacity adaptation interval, determines the adjustment strategy of the mixing capacity in the current setting stage.

[0012] Further, the setting stage includes a heating stage, a thermal equilibrium stage, a molecular restructuring stage and a cooling setting stage.

[0013] Further, the temperature control range is determined according to the type of the setting processing target and the parameter control requirement.

[0014] Further, the hydrogen mixing ratio is the proportion of hydrogen in the mixed gas of natural gas and hydrogen consumed by the setting machine.

[0015] Further, the parameters include one or more of dimensional stability, molecular structure change, breaking strength and softness.

[0016] Further, the method for determining the optimal hydrogen mixing ratio in the current setting stage is:

[0017] According to the historical over-temperature data of different hydrogen mixing ratios in the temperature control range, the historical over-temperature times at the hydrogen mixing ratio are determined.

[0018] Based on the historical over-temperature times, the optimal hydrogen mixing ratio in the current setting stage is determined.

[0019] Specifically, the historical over-temperature data is determined according to the deviation between the temperature adjustment target and the actual temperature in the temperature control process. Specifically, the number of times that the actual temperature exceeds the temperature adjustment target is taken as the historical over-temperature times.

[0020] Further, the method for determining the capacity switching matching type of the current setting stage is:

[0021] According to the variation of the optimal hydrogen mixing ratio between the current setting stage and the next setting stage, the variation amount of the optimal hydrogen mixing ratio between the current setting stage and the next setting stage is determined.

[0022] determine the number of historical over-temperature times of the setting stage and the next setting stage of the setting stage at the optimal hydrogen blending ratio based on the historical over-temperature data at the optimal hydrogen blending ratio;

[0023] determine the capacity switching matching type of the setting stage according to the variation, the setting stage and the number of historical over-temperature times of the next setting stage of the setting stage at the optimal hydrogen blending ratio.

[0024] In a second aspect, the application provides a natural gas hydrogen blending premix control system applied to a setting machine, which adopts the natural gas hydrogen blending premix control method applied to the setting machine, and specifically comprises:

[0025] a hydrogen production device, a natural gas supply device, a blending device and a setting machine.

[0026] The hydrogen production device and the natural gas supply device mix natural gas and hydrogen through a pipeline and then the mixture enters the blending device.

[0027] The blending device is responsible for the storage and processing of natural gas and hydrogen and provides the blended natural gas and hydrogen to the setting machine.

[0028] The setting machine uses the blended natural gas and hydrogen for heating treatment and uses the heat generated by the heating treatment for setting treatment of the setting treatment target.

[0029] Further, the hydrogen production device and the natural gas supply device are each provided with an electric valve in the pipeline before blending treatment, and the electric valve is used to adjust the supply of hydrogen and natural gas.

[0030] The application has the following advantages:

[0031] The variation of the optimal hydrogen blending ratio between the setting stage and the next setting stage and the historical temperature control data of the setting machine at the optimal hydrogen blending ratio are combined to determine the capacity switching matching type of different setting stages, so that the differences in capacity adjustment requirements caused by the variation are considered, and the historical temperature control data is also considered, the temperature regulation requirements of the setting machine in the current setting stage after capacity adjustment and the over-temperature risk of the next setting stage caused by not performing capacity adjustment are comprehensively considered, the capacity switching matching type is combined with the requirements of multiple setting stages, and the foundation for generating differentiated capacity adjustment processing strategies is laid.

[0032] The capacity switching matching type of the shaping stage, the capacity switching matching type of different future shaping stages and the capacity adaptation interval are used to determine the adjustment strategy of the blending capacity in the shaping stage, so as to avoid the technical problem of poor combustion stability caused by frequent capacity adjustment in different capacity switching matching types, and to perform the differentiated blending capacity adjustment processing in advance in the shaping stage with high adjustment demand, thereby reducing the number of blending capacity adjustment processing while ensuring the adjustment demand of the optimal hydrogen blending ratio of the blending capacity.

[0033] Other features and advantages will be set forth in the accompanying description, and in part will be apparent from the description and the drawings, or can be learned by practice of the application as claimed in the claims.

[0034] In order to make the above-mentioned objects, features and advantages of the present application more apparent, the following preferred embodiments are specifically described with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0035] The above and other features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0036] Figure 1 A flowchart of a natural gas hydrogen blending premixing control method applied to a setting machine;

[0037] Figure 2 A flowchart of a method for determining the optimal hydrogen blending ratio of a shaping stage;

[0038] Figure 3 A flowchart of determining the need for adjustment processing of the blending amount of the blending device;

[0039] Figure 4 A flowchart of a method for determining the capacity switching matching type of a shaping stage;

[0040] Figure 5 A framework diagram of a natural gas hydrogen blending premixing control system applied to a setting machine. DETAILED DESCRIPTION

[0041] In order to make the technical personnel in the art better understand the technical solutions in the specification, the technical solutions in the specification will be described clearly and completely below with reference to the drawings in the specification. Obviously, the described embodiments are only part of the embodiments of the specification, not all. Based on the embodiments of the specification, all other embodiments obtained by those of ordinary skill in the art without creative labor should belong to the scope of protection of the specification.

[0042] The optimal hydrogen blending ratio is the highest hydrogen blending ratio in a preset number range, where the average number of historical over-temperature times in different setting treatment times is the highest.

[0043] When the number of historical over-temperature times of the optimal hydrogen blending ratio in the variable demand stage in the next setting stage does not meet the requirement, the next setting stage is determined as a temperature control risk stage, and when the number of temperature control risk stages is more than 2, it is determined that the adjustment of the blending amount of the blending device is required.

[0044] The setting stage spaced between the nearest future stage and the nearest past stage is determined as a spacing setting stage, when the capacity switching matching type of the setting stage is a first type matching type, the capacity of the setting stage is directly adjusted to the maximum of the minimum end points of the capacity adaptation range in different spacing setting stages, and the blending capacity in the spacing setting stage is maintained at the maximum of the minimum end points, and when it is not a first type matching type, no adjustment is required.

[0045] Embodiment 1

[0046] As shown in Figure 1 The application provides a natural gas hydrogen blending premixing control method applied to a setting machine, which specifically comprises the following steps:

[0047] S1 determining the temperature control range in different setting stages based on the setting treatment target of the setting machine, and determining the optimal hydrogen blending ratio of the setting stage according to the historical over-temperature data of different hydrogen blending ratios in the temperature control range;

[0048] Further, the setting stage comprises a heating stage, a thermal equilibrium stage, a molecular restructuring stage and a cooling setting stage.

[0049] Specifically, the temperature control range is determined according to the type of the setting treatment target and the parameter control requirement.

[0050] Specifically, the hydrogen blending ratio is the proportion of hydrogen in the mixed gas of natural gas and hydrogen consumed by the setting machine.

[0051] Specifically, the parameters include one or more of dimensional stability, molecular structure change, breaking strength and softness.

[0052] It should be noted that, as shown in Figure 2 The method for determining the optimal hydrogen blending ratio of the setting stage is as follows:

[0053] According to the historical over-temperature data of different hydrogen blending ratios in the temperature control range, the number of historical over-temperature times under the hydrogen blending ratio is determined.

[0054] The optimal hydrogen blending ratio in the setting stage is determined based on the number of historical over-temperature times.

[0055] The specific historical over-temperature data is determined according to the deviation of the actual temperature from the temperature regulation target in the temperature control process, and specifically, the number of times that the actual temperature exceeds the temperature regulation target is taken as the historical over-temperature number.

[0056] Specifically, the optimal hydrogen doping ratio is determined as the highest hydrogen doping ratio within a preset number interval of the average of the historical over-temperature numbers in different shaping treatment numbers.

[0057] Optionally, the method for determining the optimal hydrogen doping ratio of the shaping stage is:

[0058] According to the historical over-temperature data of different hydrogen doping ratios within the temperature control range, the historical over-temperature number under the hydrogen doping ratio is determined;

[0059] Based on the historical over-temperature number of the historical over-temperature number in different shaping treatment numbers, the shaping treatment number whose historical over-temperature number is not within the preset number interval is determined as the over-temperature abnormal number.

[0060] The optimal hydrogen doping ratio in the hydrogen doping ratio is determined through the over-temperature abnormal number.

[0061] It should be noted that the optimal hydrogen doping ratio is the highest hydrogen doping ratio within the preset abnormal number interval of the over-temperature abnormal number.

[0062] S2 determines whether the adjustment of the mixing amount of the mixing device needs to be performed according to the variation of the optimal hydrogen doping ratio between the shaping stage and the next shaping stage and the historical over-temperature data of the optimal hydrogen doping ratio in the next shaping stage, and if so, proceeds to the next step.

[0063] Specifically, as shown in Figure 3 The determination of the need for adjustment of the mixing amount of the mixing device specifically includes:

[0064] The variation amount of the optimal hydrogen doping ratio between different shaping stages and the next shaping stage is determined according to the variation of the optimal hydrogen doping ratio between different adjacent shaping stages.

[0065] The temperature control risk stage is determined according to the historical over-temperature data of the optimal hydrogen doping ratio in the next shaping stage of different variation demand stages through the variation demand stage in the shaping stage.

[0066] Whether the adjustment of the mixing amount of the mixing device needs to be performed is determined through the number of the temperature control risk stages.

[0067] The specific variable demand stage is a stage in which the variation of the optimal hydrogen blending ratio between the current stage and the next stage is greater than a variation threshold.

[0068] It should be noted that when the number of historical over-temperature times of the optimal hydrogen blending ratio in the variable demand stage in the next stage does not meet the requirement, the next stage is determined to be a temperature control risk stage. Specifically, when the number of historical over-temperature times is not within a preset number of times interval, it is determined that the number of historical over-temperature times does not meet the requirement.

[0069] It should be noted that when the number of temperature control risk stages is greater than a preset risk period number, it is determined that the adjustment of the mixing amount of the mixing device needs to be performed.

[0070] In another possible embodiment, the adjustment of the mixing amount of the mixing device needs to be performed, specifically including:

[0071] The variation of the optimal hydrogen blending ratio between different adjacent stages is determined, the variation of the optimal hydrogen blending ratio between the current stage and the next stage is determined, and the variable demand stage in the current stage is determined according to the variation.

[0072] In a possible embodiment, if there is no variable demand stage in the above step, the variation of the optimal hydrogen blending ratio between different adjacent stages is small, and therefore the next stage has an over-temperature risk, and therefore it can be directly determined that the adjustment of the mixing amount of the mixing device is not required.

[0073] In addition, if there is a variable demand stage, it is also necessary to determine whether the number of variable demand stages meets the requirement. When the number of variable demand stages does not meet the requirement, that is, greater than a certain number threshold, the adjustment requirement of the optimal hydrogen blending ratio is too high, and therefore it can be directly determined that the adjustment of the mixing amount of the mixing device needs to be performed.

[0074] Further, even if the number of variable demand stages meets the requirement, if the sum of the stage setting processing time of the next stage of the variable demand stage is too long, that is, greater than a certain time threshold, the adjustment requirement of the optimal hydrogen blending ratio is too high, and therefore it can be directly determined that the adjustment of the mixing amount of the mixing device needs to be performed. Only when the above conditions do not exist, the next step is entered.

[0075] The number of historical over-temperature times of the next stage is determined by the historical over-temperature data of the optimal hydrogen blending ratio in the variable demand stage of the different variable demand stages.

[0076] It should be noted that if the number of historical over-temperature times of the next setting stage does not meet the requirement of the variable demand stage in the above step, the temperature of the setting stage needs to be adjusted in time, so the adjustment of the mixing amount of the mixing device can be directly determined.

[0077] In addition, it should be noted that if the number of historical over-temperature times of the next setting stage does not meet the requirement of the variable demand stage, it is necessary to determine whether the sum of the number of historical over-temperature times of different next setting stages meets the requirement. Specifically, when the sum of the number of historical over-temperature times of different next setting stages is too much, i.e., greater than the preset threshold, in order to ensure the stability of combustion, it can be determined that the adjustment of the mixing amount of the mixing device is required.

[0078] The number of historical over-temperature times of the next setting stage of different variable demand stages and the setting processing time are used to determine whether the adjustment of the mixing amount of the mixing device is required.

[0079] In one possible embodiment, the demand value of the adjustment of the mixing amount of different next setting stages is determined according to the number of historical over-temperature times and the setting processing time. In one possible embodiment, the demand value can be determined according to the product of the ratio of the number of historical over-temperature times to the preset number of over-temperature times and the ratio of the setting processing time to the preset setting processing time.

[0080] It should be noted that when the sum of the demand values of the adjustment of the mixing amount of different next setting stages is greater than the preset demand value, the demand degree of the adjustment of the mixing amount of the mixing device is higher, so it can be directly determined that the adjustment of the mixing amount of the mixing device is required.

[0081] S3 determines the variation of the optimal hydrogen mixing ratio between the setting stage and the next setting stage, and determines the capacity switching matching type of different setting stages in combination with the historical temperature control data of the setting machine under the optimal hydrogen mixing ratio;

[0082] Specifically, as shown in Figure 4 The method for determining the capacity switching matching type of the setting stage is as follows:

[0083] The variation of the optimal hydrogen mixing ratio between the setting stage and the next setting stage is determined based on the variation of the optimal hydrogen mixing ratio between the setting stage and the next setting stage;

[0084] The number of historical over-temperature times of the setting stage and the next setting stage under the optimal hydrogen mixing ratio is determined based on the historical over-temperature data under the optimal hydrogen mixing ratio;

[0085] The capacity switching matching type of the current calibration stage is determined according to the variation amount, the number of historical over-temperature times of the current calibration stage under the optimal hydrogen blending ratio, and the number of historical over-temperature times of the next calibration stage under the optimal hydrogen blending ratio.

[0086] It can be understood that when the number of historical over-temperature times is too large, the demand for temperature adjustment is large, and therefore when the blending capacity of the current calibration stage is adjusted, the blending capacity is reduced, and if the blending uniformity in the blending tank is not high, the adjustment reliability will inevitably be insufficient. In addition, when the number of historical over-temperature times of the next calibration stage is too large, if the blending capacity is not adjusted, the combustion stability will also be poor. Therefore, the capacity switching matching type is determined by comprehensively considering multiple factors.

[0087] It should be noted that the capacity switching matching type of the current calibration stage is determined according to the variation amount and the number of historical over-temperature times, and specifically includes:

[0088] According to the number of historical over-temperature times of the current calibration stage under the optimal hydrogen blending ratio, the number of historical over-temperature times of the next calibration stage under the optimal hydrogen blending ratio, the variation amount, and the matching of the number of historical over-temperature times interval and the variation amount interval of different preset switching matching types, the number of historical over-temperature times of the current calibration stage under the optimal hydrogen blending ratio, the number of historical over-temperature times of the next calibration stage under the optimal hydrogen blending ratio, and the variation amount are all in the corresponding preset over-temperature times interval and the preset switching matching type of the variation amount interval as the capacity switching matching type.

[0089] The preset over-temperature times interval corresponding to the number of historical over-temperature times of the current calibration stage under the optimal hydrogen blending ratio and the number of historical over-temperature times of the next calibration stage under the optimal hydrogen blending ratio are inconsistent.

[0090] It should be noted that the capacity switching matching type includes a first matching type, a second matching type, and a third matching type, wherein the capacity switching matching degree of the first matching type is greater than that of the second matching type, and the capacity switching matching degree of the second matching type is greater than that of the third matching type.

[0091] In another possible embodiment, the method for determining the capacity switching matching type of the current calibration stage includes:

[0092] S31 determines the variation amount of the optimal hydrogen blending ratio between the current calibration stage and the next calibration stage according to the variation of the optimal hydrogen blending ratio between the current calibration stage and the next calibration stage.

[0093] It should be noted that if the variation of the optimal hydrogen blending ratio between the shaping stage and the next shaping stage is within the preset interval, it indicates that the optimal hydrogen blending ratio at this time has a certain degree of adjustment, and directly enters the next step to determine the adjustment requirement type of the shaping stage.

[0094] It can be understood that if the variation of the optimal hydrogen blending ratio between the shaping stage and the next shaping stage is within the preset interval, if the variation is too large, i.e., greater than the fixed threshold, if the capacity adjustment processing is not performed, the overall combustion stability may be poor, and therefore the capacity switching matching type is determined to be a first matching type.

[0095] In addition, if the variation is not greater than the fixed threshold and is not within the preset interval, even if the capacity adjustment processing is not performed, the combustion stability will not be affected, and therefore the capacity switching matching type is determined to be a third matching type.

[0096] S32 determines, based on historical over-temperature data at the optimal hydrogen blending ratio, a historical over-temperature number of the shaping stage and a historical over-temperature number of the next shaping stage of the shaping stage at the optimal hydrogen blending ratio, and determines an adjustment requirement type of the shaping stage according to the historical over-temperature number of the shaping stage at the optimal hydrogen blending ratio and the historical over-temperature number of the next shaping stage of the shaping stage at the optimal hydrogen blending ratio;

[0097] In one possible embodiment, if the historical over-temperature number of the next shaping stage of the shaping stage at the optimal hydrogen blending ratio is relatively large or the historical over-temperature number of the shaping stage at the optimal hydrogen blending ratio is relatively small, specifically determined by a threshold, at this time, if the adjustment is not performed, the combustion stability of the next stage will be poor, and the adjustment requirement of the current shaping stage will not be affected, and therefore the capacity switching matching type can be determined to be a first matching type.

[0098] In addition, it should be noted that if the historical over-temperature number of the next shaping stage of the shaping stage at the optimal hydrogen blending ratio is not large or the historical over-temperature number of the shaping stage at the optimal hydrogen blending ratio is too large, specifically determined by a threshold, at this time, if the adjustment is not performed, the combustion stability of the next stage will not be poor, and the adjustment requirement of the current shaping stage will be affected, and therefore the capacity switching matching type can be determined to be a third matching type.

[0099] In other cases, in one possible embodiment, according to the historical over-temperature times of the current calibration stage under the optimal hydrogen blending ratio, the historical over-temperature times of the next calibration stage of the calibration stage under the optimal hydrogen blending ratio, and the correspondence relationship between different preset adjustment requirement types, it is determined that the historical over-temperature times of the current calibration stage under the optimal hydrogen blending ratio and the historical over-temperature times of the next calibration stage of the calibration stage under the optimal hydrogen blending ratio both fall into the over-temperature time interval of the preset adjustment requirement type, and the preset adjustment requirement type is taken as the adjustment requirement type of the calibration stage.

[0100] It should be noted that the adjustment requirement type of the calibration stage includes a first requirement type and a second requirement type.

[0101] S33 determines the capacity switching matching type of the calibration stage according to the variation amount and the adjustment requirement type of the calibration stage.

[0102] Specifically, in one possible embodiment, according to the adjustment requirement type of the calibration stage, a preset variation amount threshold under the adjustment requirement type is determined, and when the variation amount is greater than the preset variation amount threshold, it is determined that the calibration stage belongs to the second matching type, and otherwise, it is determined that the calibration stage belongs to the first matching type.

[0103] It can be understood that the capacity adaptation interval of the calibration stage is determined according to the optimal hydrogen blending ratio of the calibration stage, and specifically, a matching capacity is determined according to the preset capacity corresponding to the optimal hydrogen blending ratio of the calibration stage, and the capacity adaptation interval is constructed with the matching capacity as the lower limit, wherein the greater the optimal hydrogen blending ratio, the greater the matching capacity.

[0104] In one possible embodiment, the correspondence relationship between the optimal hydrogen blending ratio and different preset capacity adaptation intervals can be determined, and specifically, the preset capacity adaptation interval in which the optimal hydrogen blending ratio falls into the preset ratio interval corresponding to the preset capacity adaptation interval is determined.

[0105] S4 determines the adjustment strategy of the blending capacity of the calibration stage based on the capacity switching matching type of the calibration stage and in combination with the capacity switching matching types and the capacity adaptation intervals of different future calibration stages.

[0106] Specifically, the method for determining the adjustment strategy of the blending capacity of the calibration stage is as follows:

[0107] According to the capacity switching matching types of different future calibration stages, the calibration stages of the first matching type and the calibration stages of the second matching type in the future are determined and taken as the first stages and the second stages.

[0108] The calibration stages spaced from the nearest future first stage are taken as interval calibration stages.

[0109] According to the number of the first type and the second type of the future stage, and in combination with the capacity switching matching type of the shaping stage, the adjustment strategy of the blending capacity of the shaping stage is determined.

[0110] It should be noted that when the capacity switching matching type of the shaping stage is the first type, when there is no first type stage, it means that there is no shaping stage with large capacity adjustment demand in the later period, and therefore, on this basis, when the number of the second type stage in the later period is greater than the preset number threshold of the second type stage, the blending capacity is directly adjusted to the maximum of the minimum value of the capacity adaptation interval in the different interval shaping stage, and the blending capacity in the interval shaping stage is maintained at the maximum of the minimum value.

[0111] When the number of the second type stage in the later period is not greater than the preset number threshold of the second type stage, the blending capacity adjustment processing is not required, and the blending capacity adjustment processing can be performed by the preset target adjustment amount.

[0112] When there is a first type stage, it means that there is a shaping stage with large capacity adjustment demand in the later period, and therefore, in the shaping stage, the blending capacity is directly adjusted to the maximum of the minimum value of the capacity adaptation interval in the different interval shaping stage, and the blending capacity in the interval shaping stage is maintained at the maximum of the minimum value.

[0113] It can be understood that when the capacity switching matching type of the shaping stage is the second type, it is necessary to determine whether there is a first type stage or a second type stage in the later period, and when there is neither a first type stage nor a second type stage, the blending capacity adjustment processing is not required.

[0114] When there is a first type stage, the blending capacity is adjusted according to the maximum blending capacity that can be adjusted by the second type matching type in the shaping stage to obtain an adjustment result, and the blending capacity in the interval shaping stage is maintained at the adjustment result.

[0115] It can be understood that the maximum blending capacity that can be adjusted by the second type matching type is determined according to the deviation amount of the optimal hydrogen blending ratio between the shaping stage and the next shaping stage, and specifically, the maximum blending capacity that can be adjusted by the second type matching type is determined according to the preset maximum adjustment amount corresponding to the deviation amount.

[0116] In addition, it should be noted that if the blending amount adjusted by the preset maximum adjustment amount corresponding to the deviation amount is less than the minimum value of the end point of the capacity adaptation interval of the shaping stage between the next second type stage, the blending capacity is directly adjusted to the maximum of the minimum value of the capacity adaptation interval in the different interval shaping stage, and the blending capacity in the shaping stage between the next second type stage is maintained at the maximum of the minimum value.

[0117] When there is no Class I stage and only Class II stages exist, if the number of Class II stages in the later stage exceeds the preset threshold for the number of Class II stages, the mixing capacity is adjusted according to the maximum value of the mixing capacity that can be adjusted by the Class II matching type to obtain the adjustment result, and the adjustment result is maintained in the later shaping stage. If the number of Class II stages in the later stage does not exceed the preset threshold for the number of Class II stages, there is no need to adjust the mixing capacity, or the mixing capacity is adjusted by the preset target adjustment amount.

[0118] When the capacity switching matching type in the finalization stage is a third-class matching type, it is determined that no adjustment of the mixing capacity is required in the finalization stage.

[0119] Example 2

[0120] Secondly, such as Figure 5 As shown, this application provides a natural gas hydrogen-blended premixing control system for a stenter, employing the aforementioned natural gas hydrogen-blended premixing control method for a stenter, specifically including:

[0121] Hydrogen production equipment, natural gas supply equipment, blending equipment, and setting machine;

[0122] The hydrogen production device and the natural gas supply device mix natural gas and hydrogen through pipelines before entering the blending device;

[0123] The blending device is responsible for storing and processing natural gas and hydrogen, and then supplying the blended natural gas and hydrogen to a given machine.

[0124] The shaping machine uses a mixture of natural gas and hydrogen for heating treatment, and uses the heat generated by the heating treatment to shape the target.

[0125] Furthermore, both the hydrogen production device and the natural gas supply device are equipped with electric valves in their pipelines before the blending process, and the supply of hydrogen and natural gas is adjusted using these electric valves.

[0126] It should also be noted that the electric valve is equipped with an Internet of Things (IoT) communication device, which uses the mixing capacity adjustment command generated by the remote server to control the electric valve.

[0127] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the embodiments of apparatus, devices, and non-volatile computer storage media are basically similar to the method embodiments, so the descriptions are relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0128] The above-described embodiments of the application have several aspects, no single one of which is solely responsible for the application's desirable attributes. Without limiting the scope of this application, other aspects of the application will become apparent from consideration of the drawings and following detailed description, it being understood that such changes in the state of the art can be made without departing from the spirit and scope of the application.

[0129] The foregoing description of one or more implementations will be better understood in view of the accompanying drawings in which: The above description is intended to be illustrative and not restrictive. Many other implementations will be apparent to those of skill in the art upon reading and understanding the above description. The scope of the application should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. A method for controlling the hydrogen-doped natural gas premixing of a setting machine, characterized in that, Specifically comprising: Determine the temperature control range in different setting stages based on the setting target of the setting machine, and determine the optimal hydrogen blending ratio in the temperature control range according to the historical over-temperature data of different hydrogen blending ratios, so as to determine the optimal hydrogen blending ratio in the setting stage; If the adjustment of the blending amount of the blending device is needed, the next step is determined by the change of the optimal hydrogen blending ratio between the setting stage and the next setting stage and the historical over-temperature data of the optimal hydrogen blending ratio in the next setting stage; Determine the change of the optimal hydrogen blending ratio between the setting stage and the next setting stage, and determine the capacity switching matching type of different setting stages in combination with the historical temperature control data of the setting machine under the optimal hydrogen blending ratio; Determine the adjustment strategy of the blending capacity in the setting stage based on the capacity switching matching type of the setting stage, the capacity switching matching type of different future setting stages and the capacity adaptation interval; The method for determining the capacity switching matching type of the setting stage is: Determine the variation amount of the optimal hydrogen blending ratio between the setting stage and the next setting stage according to the change of the optimal hydrogen blending ratio between the setting stage and the next setting stage; Determine the historical over-temperature times of the setting stage and the next setting stage under the optimal hydrogen blending ratio based on the historical over-temperature data under the optimal hydrogen blending ratio; Determine the capacity switching matching type of the setting stage according to the variation amount, the historical over-temperature times of the setting stage and the next setting stage under the optimal hydrogen blending ratio; The method for determining the adjustment strategy of the blending capacity in the setting stage is: Determine the setting stages of a type of matching and the setting stages of a type of matching according to the capacity switching matching type of different future setting stages, and take them as a type of stage and a type of stage; Take the setting stages between the nearest future a type of stage and a type of stage as interval setting stages; Determine the adjustment strategy of the blending capacity in the setting stage according to the number of the future a type of stage and a type of stage and in combination with the capacity switching matching type of the setting stage.

2. The natural gas hydrogen-blended premix control method for a setting machine according to claim 1, wherein The setting stage includes a heating stage, a thermal equilibrium stage, a molecular restructuring stage and a cooling setting stage.

3. The natural gas hydrogen-blended premix control method for a setting machine according to claim 1, wherein The temperature control range is determined according to the type of the setting target and the parameter control requirement.

4. The natural gas hydrogen-blended premix control method for a setting machine according to claim 1, wherein The hydrogen blending ratio is the proportion of hydrogen in the mixed gas of natural gas and hydrogen consumed by the setting machine.

5. The natural gas hydrogen-blended premix control method for a setting machine according to claim 3, wherein The parameters include one or more of dimensional stability, molecular structure change, breaking strength and softness.

6. The natural gas hydrogen-blended premix control method for a setting machine according to claim 1, wherein The method for determining the optimal hydrogen blending ratio in the setting stage is: Determine the historical over-temperature times under the hydrogen blending ratio according to the historical over-temperature data of different hydrogen blending ratios in the temperature control range; Determine the optimal hydrogen blending ratio in the setting stage based on the historical over-temperature times.

7. The natural gas hydrogen-blended premix control method for a stenter according to claim 6, characterized by, The optimal hydrogen blending ratio is determined as the highest hydrogen blending ratio within a preset number interval of the average of the historical over-temperature times in different setting times.

8. A natural gas hydrogen blending premix control system for a setting machine, using the natural gas hydrogen blending premix control method of any one of claims 1-7, characterized in that, Specifically comprising: A hydrogen production device, a natural gas supply device, a blending device and a setting machine. The hydrogen production device and the natural gas supply device mix natural gas and hydrogen through a pipeline and then enter the mixing device; The mixing device is responsible for the storage and processing of natural gas and hydrogen, and provides mixed natural gas and hydrogen to the molding machine; The molding machine uses the mixed natural gas and hydrogen for heating treatment, and uses the heat generated by the heating treatment for the molding treatment of the target.

Images