Vapor pressure regulation systems, methods, devices, media, and electronic devices

Abstract

The application relates to the technical field of metallurgical refining processes, and discloses a steam pressure adjusting system, method, device, medium and electronic equipment. The system comprises a first adjusting valve, a second adjusting valve, a front sensor and a rear sensor and a control mechanism. The first adjusting valve and the second adjusting valve are installed in parallel in a steam transmission pipeline. The front sensor is installed in the steam transmission pipeline and used for detecting the steam pressure before entering the first adjusting valve and the second adjusting valve. The rear sensor is installed in the steam transmission pipeline and used for detecting the steam pressure after exiting the first adjusting valve and the second adjusting valve. The control mechanism is connected with the front sensor and the rear sensor at input signal ends, and is connected with the first adjusting valve and the second adjusting valve at output signal ends. The application can keep the stability of the steam pressure input to a RH furnace steam jet pump, maintain the stability of the vacuum effect of the RH furnace, and improve the quality of molten steel in the RH furnace.

Description

Technical Field

[0001] This application relates to the field of metallurgical refining process technology, and in particular to a steam pressure regulation system, method, apparatus, medium and electronic equipment. Background Technology

[0002] In the metallurgical refining process, the RH furnace uses a steam jet pump to create a vacuum in the molten steel, effectively reducing harmful gases and improving steel quality. The RH furnace steam jet pump requires steam at a constant pressure to ensure its efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a steam pressure regulation system, method, apparatus, medium, and electronic equipment, which can improve the working efficiency of the steam jet pump in an RH boiler.

[0004] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0005] According to one aspect of the embodiments of this application, a steam pressure regulation system is provided, the system comprising: a first regulating valve; a second regulating valve, the first regulating valve and the second regulating valve being installed in parallel on a steam transmission pipeline; a front sensor, installed on the steam transmission pipeline, for detecting the steam pressure before entering the first regulating valve and the second regulating valve; a rear sensor, installed on the steam transmission pipeline, for detecting the steam pressure exiting the first regulating valve and the second regulating valve; and a control mechanism, the input signal terminal of the control mechanism being connected to the front sensor and the rear sensor respectively, and the output signal terminal of the control mechanism being connected to the first regulating valve and the second regulating valve respectively.

[0006] In one embodiment of this application, based on the foregoing scheme, the system further includes: a local display screen for displaying the values ​​of the front sensor, the rear sensor, the first regulating valve, and the second regulating valve, for local monitoring of the first regulating valve and the second regulating valve; and a host computer monitoring mechanism for displaying the values ​​of the front sensor, the rear sensor, the first regulating valve, and the second regulating valve, for remote monitoring of the first regulating valve and the second regulating valve.

[0007] The control mechanism, the local display screen, and the host computer monitoring mechanism are connected via an industrial Ethernet network.

[0008] In one embodiment of this application, based on the foregoing scheme, the control mechanism includes a PID controller.

[0009] According to one aspect of the embodiments of this application, a steam pressure regulation method is provided, the method comprising: acquiring the pre-regulation steam pressure and the post-regulation steam pressure; calculating the difference between the post-regulation steam pressure and a preset pressure and saving it as a trigger value; inputting the trigger value to a control mechanism, if the trigger value is not equal to zero, the control mechanism calculates and outputs regulation commands to a first regulating valve and a second regulating valve respectively, the first regulating valve and the second regulating valve being installed in parallel in a steam transmission pipeline; adjusting the opening degree of the first regulating valve and the second regulating valve respectively according to the regulation command; inputting the trigger value to the control mechanism, if the trigger value is equal to zero, the control mechanism has no output signal, and the first regulating valve and the second regulating valve maintain their current opening degree.

[0010] In one embodiment of this application, based on the aforementioned scheme, the method includes: setting a preset pressure of 10 Bar; when 18 Bar ≤ front steam pressure ≤ 22 Bar, selecting a first regulating valve as the working valve, the control mechanism outputs a regulating command to the first regulating valve, the first regulating valve adjusts its opening according to the regulating command, the control mechanism outputs a closing command to a second regulating valve, the second regulating valve adjusts its opening to zero according to the closing command; when 12 Bar ≤ front steam pressure ≤ 18 Bar, selecting a first regulating valve and a second regulating valve as working valves, the control mechanism transmits regulating commands to the first regulating valve and the second regulating valve respectively, the first regulating valve and the second regulating valve adjust their openings according to the regulating commands; when 12 Bar ≤ front steam pressure or front steam pressure ≥ 22 Bar, the control mechanism outputs a closing command to the first regulating valve and the second regulating valve respectively, the first regulating valve and the second regulating valve both adjust their openings to zero according to the closing command, and the control mechanism outputs an alarm.

[0011] In one embodiment of this application, based on the aforementioned scheme, when 12 Bar ≤ front steam pressure ≤ 18 Bar, the first regulating valve and the second regulating valve are selected as working valves. The control mechanism transmits regulation commands to the first regulating valve and the second regulating valve respectively. The first regulating valve and the second regulating valve adjust their openings according to the regulation commands. The method includes: the control mechanism outputting regulation commands; the regulation commands being processed according to the following formula and then outputting first control commands and second control commands to the first regulating valve and the second regulating valve respectively:

[0012]

[0013] Wherein, x1 is the signal segment controlling u1, with a value of 50, x2 is the signal segment controlling u2, with a value of 30, u1 is the first control command, and u2 is the second control command; the opening degree of the first regulating valve and the second regulating valve are adjusted according to the first control command and the second control command respectively.

[0014] In one embodiment of this application, based on the aforementioned scheme, in the step of processing the adjustment command according to the following formula and outputting the first control command and the second control command to the first regulating valve and the second regulating valve respectively, when the first control command and the second control command are less than 1, the opening degree of the corresponding regulating valve is adjusted to zero; when the first control command and the second control command are greater than 1 and less than 2, the opening degree of the corresponding regulating valve is adjusted according to the adjustment command; when the first control command and the second control command are equal to 2, the opening degree of the corresponding regulating valve is adjusted to fully open.

[0015] According to one aspect of the embodiments of this application, a steam pressure regulating device is provided. The device includes: an acquisition unit, configured to acquire the pre-regulation steam pressure and the post-regulation steam pressure; a calculation unit, configured to calculate the difference between the post-regulation steam pressure and a preset pressure and save it as a trigger value; a first control unit, configured to input the trigger value to a control mechanism, and if the trigger value is not equal to zero, the control mechanism calculates and outputs regulation commands to a first regulating valve and a second regulating valve respectively, wherein the first regulating valve and the second regulating valve are installed in parallel in a steam transmission pipeline; an adjustment unit, configured to adjust the opening degree of the first regulating valve and the second regulating valve respectively according to the regulation command; and a second control unit, configured to input the trigger value to the control mechanism, and if the trigger value is equal to zero, the control mechanism has no output signal, and the first regulating valve and the second regulating valve maintain their current opening degree.

[0016] According to one aspect of the embodiments of this application, a computer-readable storage medium is provided, wherein at least one piece of program code is stored therein, the at least one piece of program code being loaded and executed by a processor to perform the operations as described in the above embodiments.

[0017] According to one aspect of the embodiments of this application, an electronic device is provided, the electronic device including one or more processors and one or more memories, the one or more memories collectively storing at least one piece of program code, the at least one piece of program code being loaded and executed by the one or more processors to perform the operations performed as described in the above embodiments.

[0018] In the technical solution of this application embodiment, the first regulating valve and the second regulating valve are connected in parallel, and the first regulating valve and the second regulating valve jointly regulate the pressure of external steam entering the steam jet pump of the RH furnace. Before the steam enters the first regulating valve and the second regulating valve, the steam pressure is detected by a front sensor. After the steam is adjusted by the first regulating valve and the second regulating valve, the steam pressure is detected by a rear sensor. The control mechanism calculates based on the data from the front sensor and the rear sensor and outputs corresponding regulation commands to the first regulating valve and the second regulating valve respectively, so as to keep the steam pressure entering the steam jet pump of the RH furnace stable and improve the quality of molten steel in the RH furnace.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the steam pressure regulation system according to an embodiment of this application;

[0022] Figure 2 This is a flowchart illustrating a vapor pressure regulation method according to an embodiment of this application;

[0023] Figure 3 This is a detailed flowchart illustrating how, according to an embodiment of this application, a trigger value is input to a control mechanism, and if the trigger value is not equal to zero, the control mechanism calculates and outputs adjustment commands to the first and second control valves respectively.

[0024] Figure 4 This is a block diagram of a vapor pressure regulating device according to an embodiment of this application;

[0025] Figure 5 This is a schematic diagram of a computer-readable storage medium according to an embodiment of this application;

[0026] Figure 6 This is a schematic diagram of an electronic device according to an embodiment of this application.

[0027] Reference numerals: 10, first regulating valve; 20, second regulating valve; 30, front sensor; 40, rear sensor; 50, control mechanism. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0029] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0030] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0031] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0032] It should be noted that "multiple" in this article refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of these terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described.

[0034] The implementation details of the technical solutions in the embodiments of this application are described in detail below:

[0035] First, it should be noted that the steam pressure regulation system proposed in this application can be applied to the field of metallurgical refining process technology. For example, the steam pressure stability of the steam jet pump in the RH furnace affects the quality of molten steel in the RH furnace. Therefore, ensuring the steam pressure input to the steam jet pump is particularly important.

[0036] According to one aspect of this application, a vapor pressure regulation system is provided. Figure 1This is a schematic diagram of a vapor pressure regulation system according to an embodiment of this application.

[0037] Please refer to Figure 1 The steam pressure regulation system includes a first regulating valve 10, a second regulating valve 20, a front sensor 30, a rear sensor 40, and a control mechanism 50. The first regulating valve 10 and the second regulating valve 20 are installed in parallel on the steam transmission pipeline. The front sensor 30 is installed on the steam transmission pipeline and is used to detect the steam pressure before entering the first regulating valve 10 and the second regulating valve 20. The rear sensor 40 is installed on the steam transmission pipeline and is used to detect the steam pressure exiting the first regulating valve 10 and the second regulating valve 20. The input signal terminals of the control mechanism 50 are connected to the front sensor 30 and the rear sensor 40, respectively, and the output signal terminals of the control mechanism 50 are connected to the first regulating valve 10 and the second regulating valve 20, respectively.

[0038] In this application, external steam is delivered to the steam jet pump inside the RH furnace through a steam transmission pipeline. The front sensor 30 and the rear sensor 40 detect the steam pressure before and after adjustment, respectively, and input the data to the control mechanism 50. After analysis, the control mechanism 50 performs calculations and outputs adjustment commands to the first regulating valve 10 and the second regulating valve 20, respectively. The first regulating valve 10 and the second regulating valve 20 adjust their respective openings according to the adjustment commands to keep the steam pressure delivered to the steam jet pump of the RH furnace stable.

[0039] Because the external steam pressure fluctuates constantly, the front sensor 30 and the rear sensor 40 monitor the steam pressure in the steam delivery pipeline in real time, ensuring that the steam entering the RH boiler steam jet pump remains in dynamic equilibrium. Simultaneously, the two parallel first regulating valves 10 and the second regulating valve 20 greatly enhance the overall regulating range and help reduce steam peaks, allowing for a smooth transition in steam pressure before and after regulation.

[0040] In one embodiment of this application, the steam pressure regulation system further includes a local display screen and a host computer monitoring mechanism. The local display screen is used to display the values ​​of the front sensor 30, the rear sensor 40, the first regulating valve 10, and the second regulating valve 20, and is used for local monitoring of the first regulating valve 10 and the second regulating valve 20. The host computer monitoring mechanism is used to display the values ​​of the front sensor 30, the rear sensor 40, the first regulating valve 10, and the second regulating valve 20, and is used for remote monitoring of the first regulating valve 10 and the second regulating valve 20. The control mechanism 50, the local display screen, and the host computer monitoring mechanism are connected via an industrial Ethernet network.

[0041] In this application, the control mechanism 50 sends the detection data from the front sensor 30 and the rear sensor 40 to a local display screen and a host computer monitoring unit, respectively. The detection data from the front sensor 30 and the rear sensor 40 are displayed in real time on both the local display screen and the host computer monitoring unit. Furthermore, the opening data of the first regulating valve 10 and the second regulating valve 20 are also displayed in real time on both the local display screen and the host computer monitoring unit. This helps production personnel monitor the operation of the entire system in real time and input necessary intervention commands in special circumstances to improve production safety.

[0042] In one embodiment of this application, the control mechanism 50 includes a PID controller.

[0043] In this application, the PID controller consists of a proportional unit (P), an integral unit (I), and a derivative unit (D). Data processing and control are achieved by setting three parameters: Kp, Ki, and Kd. Unlike other simple control operations, the PID controller can adjust the input value based on historical data and the frequency of differences, thus making the system more accurate and stable.

[0044] On the other hand, this application also provides a method for regulating vapor pressure. Figure 2 The diagram below illustrates a vapor pressure regulation method according to an embodiment of this application. This vapor pressure regulation method can be executed by a device with computational processing capabilities. The vapor pressure regulation method includes at least steps 110 to 150, which are described in detail below:

[0045] Please refer to Figure 2 In step 110, the pre-adjustment steam pressure and the post-adjustment steam pressure are obtained.

[0046] In this application, the front steam pressure before regulation and the rear steam pressure after regulation are obtained by means of a front sensor and a rear sensor installed on the steam transmission pipeline.

[0047] In step 120, the difference between the post-vapor pressure and the preset pressure is calculated and saved as the trigger value.

[0048] In this application, the steam pressure required by the RH boiler steam jet pump is set as the preset pressure, and the difference between the subsequent steam pressure and the preset pressure is set as the trigger value. If the trigger value is not equal to zero, it indicates that there is a pressure difference between the subsequent steam pressure and the preset pressure, and the steam pressure needs to be adjusted. If the trigger value is equal to zero, it indicates that the subsequent steam pressure is equal to the preset pressure, which meets the steam pressure required by the RH boiler steam jet pump.

[0049] In step 130, the trigger value is input to the control mechanism. If the trigger value is not equal to zero, the control mechanism calculates and outputs adjustment commands to the first regulating valve and the second regulating valve respectively. The first regulating valve and the second regulating valve are installed in parallel in the steam transmission pipeline.

[0050] In this application, a trigger value is input to the control mechanism. If the trigger value is not equal to zero, the control mechanism calculates the required opening degree of the first and second regulating valves based on the magnitude of the trigger value. After calculation, the control mechanism outputs adjustment commands to the first and second regulating valves respectively.

[0051] In step 140, the opening degrees of the first regulating valve and the second regulating valve are adjusted according to the adjustment command.

[0052] In this application, the first regulating valve and the second regulating valve adjust their opening degree according to the regulating command, so that the subsequent steam pressure approaches the preset pressure to meet the steam demand of the RH boiler steam jet pump.

[0053] In step 150, the trigger value is input to the control mechanism. If the trigger value is equal to zero, the control mechanism has no output signal, and the first regulating valve and the second regulating valve maintain their opening at this moment.

[0054] In this application, if the trigger value is zero, the steam pressure after characterization is equal to the preset pressure, which satisfies the steam demand of the RH boiler steam jet pump. At this time, the opening of the first regulating valve and the second regulating valve remains unchanged.

[0055] In one embodiment of this application, step 130 involves inputting a trigger value to the control mechanism. If the trigger value is not equal to zero, the control mechanism calculates and outputs adjustment commands to the first and second control valves respectively, which can be performed as follows: Figure 3 Perform the steps shown.

[0056] Please refer to Figure 3 This is a detailed flowchart illustrating how, according to an embodiment of this application, a trigger value is input to a control mechanism. If the trigger value is not equal to zero, the control mechanism calculates and outputs adjustment commands to the first and second control valves respectively. Specifically, it includes steps 131 to 134:

[0057] Step 131: Set the preset pressure to 10 Bar.

[0058] Step 132: When 18 Bar ≤ front steam pressure ≤ 22 Bar, select the first regulating valve as the working valve, and the control mechanism outputs a regulating command to the first regulating valve. The first regulating valve adjusts its opening according to the regulating command. The control mechanism outputs a closing command to the second regulating valve, and the second regulating valve adjusts its opening to zero according to the closing command.

[0059] Step 133: When 12 Bar ≤ front steam pressure ≤ 18 Bar, select the first regulating valve and the second regulating valve as working valves. The control mechanism transmits the regulation command to the first regulating valve and the second regulating valve respectively. The first regulating valve and the second regulating valve adjust their opening degree according to the regulation command.

[0060] Step 134: When 12 Bar ≤ front steam pressure or front steam pressure ≥ 22 Bar, the control mechanism outputs a shut-off command and transmits it to the first regulating valve and the second regulating valve respectively. The first regulating valve and the second regulating valve adjust their opening to zero according to the shut-off command, and the control mechanism outputs an alarm.

[0061] In this application, the first and second regulating valves installed on the steam delivery pipeline are pressure reducing valves. When the external input pressure is greater than 18 Bar, a single regulating valve can adjust the upstream steam pressure to the preset pressure. When the external input pressure is less than 18 Bar, both regulating valves need to be opened to a certain degree to adjust the upstream steam pressure to the preset pressure. When the external input pressure is less than 12 Bar or greater than 22 Bar, the first and second regulating valves cannot meet the regulation requirements and are prone to peak fluctuations, affecting the working efficiency of the RH furnace injection pump and the quality of the molten steel in the RH furnace. In this case, the first and second regulating valves are fully closed, the control mechanism outputs an alarm signal, and the RH furnace stops working to protect the stability of the molten steel quality in the RH furnace.

[0062] In one embodiment of this application, step 133, when 12 Bar ≤ front steam pressure ≤ 18 Bar, selects the first regulating valve and the second regulating valve as working valves, and transmits the control mechanism regulation command to the first regulating valve and the second regulating valve respectively. The first regulating valve and the second regulating valve adjust their opening degree according to the regulation command, which can be executed according to the following steps:

[0063] The control mechanism outputs adjustment commands.

[0064] After processing the adjustment command according to the following formula, the first control command and the second control command are output to the first control valve and the second control valve respectively:

[0065]

[0066] Where x1 is the signal segment controlling u1, with a value of 50, x2 is the signal segment controlling u2, with a value of 30, u1 is the first control command, and u2 is the second control command.

[0067] The opening degrees of the first regulating valve and the second regulating valve are adjusted according to the first control command and the second control command, respectively.

[0068] In this application, when 12 Bar ≤ upstream steam pressure ≤ 18 Bar, both the first and second regulating valves are operational valves and require opening adjustment to bring the downstream steam pressure close to the preset pressure. The control mechanism calculates the required opening and outputs a regulating command. This command is then processed according to a formula, and the total regulating command is broken down into a first control command and a second control command, which are then sent to the first and second regulating valves respectively.

[0069] The total output command range is 0-100. When either u1 or u2 is less than 1, the corresponding regulating valve maintains its current opening and no adjustment is needed. When the ratio of u1 to u2 is greater than 1, the opening of the regulating valve is proportionally reduced or increased. Through graded control of the first and second regulating valves, the peak value of steam fluctuations can be effectively reduced, and the stability of the downstream steam pressure can be improved. This enhances the stability of the steam input to the RH furnace steam jet pump, helps maintain the vacuum within the RH furnace, and improves the quality of the molten steel in the RH furnace.

[0070] In one embodiment of this application, in the step of processing the adjustment command according to the following formula and outputting the first control command and the second control command to the first regulating valve and the second regulating valve respectively, when the first control command and the second control command are less than 1, the opening degree of the corresponding regulating valve is adjusted to zero; when the first control command and the second control command are greater than 1 and less than 2, the opening degree of the corresponding regulating valve is adjusted according to the adjustment command; when the first control command and the second control command are equal to 2, the opening degree of the corresponding regulating valve is adjusted to fully open.

[0071] In this application, when 12 Bar ≤ front steam pressure ≤ 18 Bar, the steam peak value is relatively large when the first regulating valve and the second regulating valve are adjusted separately. This is not conducive to the working stability of the RH furnace steam jet pump and the maintenance of vacuum in the RH furnace. Therefore, a graded control method is adopted to simultaneously adjust the first regulating valve and the second regulating valve, so that the value change of the rear steam pressure is more gradual, which is conducive to improving the stability of the RH furnace water.

[0072] In summary, in the embodiments of this application, by means of graded control, the two parallel first and second regulating valves are controlled in stages according to the front steam pressure, so as to reduce the peak fluctuation of the rear steam pressure, improve the stability of the steam in the steam injection pump of the RH furnace, improve the stability of the vacuum in the RH furnace, and achieve the effect of improving the quality of molten steel in the RH furnace.

[0073] The following describes an embodiment of the apparatus described in this application, which can be used to execute the vapor pressure regulation method described in the above embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the vapor pressure regulation method described in the above embodiments of this application.

[0074] Figure 4 A block diagram of a vapor pressure regulating device according to an embodiment of this application is shown.

[0075] Reference Figure 4 As shown, a vapor pressure regulating device 400 according to an embodiment of this application includes: an acquisition unit 401, a calculation unit 402, a first control unit 403, an adjustment unit 404, and a second control unit 405.

[0076] The system includes: an acquisition unit 401, which acquires the pre-steam pressure before adjustment and the post-steam pressure after adjustment; a calculation unit 402, which calculates the difference between the post-steam pressure and the preset pressure and saves it as a trigger value; a first control unit 403, which inputs the trigger value to the control mechanism. If the trigger value is not equal to zero, the control mechanism calculates and outputs adjustment commands to the first and second control valves respectively. The first and second control valves are installed in parallel in the steam transmission pipeline; an adjustment unit 404, which adjusts the opening degree of the first and second control valves respectively according to the adjustment command; and a second control unit 405, which inputs the trigger value to the control mechanism. If the trigger value is equal to zero, the control mechanism has no output signal, and the first and second control valves maintain their current opening degree.

[0077] In another aspect, this application also provides a computer-readable storage medium storing a program product capable of implementing the vapor pressure regulation method described above. In some possible embodiments, various aspects of this application may also be implemented as a program product comprising program code that, when run on a terminal device, causes the terminal device to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this application.

[0078] refer to Figure 5 As shown, a program product 500 for implementing the above-described method according to an embodiment of this application is described. It may employ a portable compact disc read-only memory (CD-ROM) and include program code, and can run on a terminal device, such as a personal computer. However, the program product of this application is not limited thereto. In this application, the readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0079] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0080] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0081] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0082] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0083] In another respect, this application also provides an electronic device capable of implementing the above-described method.

[0084] Those skilled in the art will understand that various aspects of this application can be implemented as a system, method, or program product. Therefore, various aspects of this application can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software implementations, collectively referred to herein as a "circuit," "module," or "system."

[0085] The following reference Figure 6 To describe an electronic device 600 according to this embodiment of the present application. Figure 6 The electronic device 600 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0086] like Figure 6 As shown, the electronic device 600 is manifested in the form of a general-purpose computing device. The components of the electronic device 600 may include, but are not limited to: at least one processing unit 610, at least one storage unit 620, and a bus 630 connecting different system components (including storage unit 620 and processing unit 610).

[0087] The storage unit stores program code that can be executed by the processing unit 610, causing the processing unit 610 to perform the steps described in the "Embodiment Methods" section above according to various exemplary embodiments of this application.

[0088] Storage unit 620 may include readable media in the form of volatile storage units, such as random access memory (RAM) 621 and / or cache memory 622, and may further include read-only memory (ROM) 623.

[0089] Storage unit 620 may also include a program / utility 624 having a set (at least one) of program modules 625, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0090] Bus 630 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0091] Electronic device 600 can also communicate with one or more external devices 1200 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 600, and / or with any device that enables electronic device 600 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 650. Furthermore, electronic device 600 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 660. As shown, network adapter 660 communicates with other modules of electronic device 600 via bus 630. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 600, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0092] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the method according to the embodiments of this application.

[0093] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of this application, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0094] It should be understood that this application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A method for regulating vapor pressure, characterized in that, Applied to a vapor pressure regulating system, the system comprising: a first regulating valve; The second regulating valve is installed in parallel with the first regulating valve in the steam transmission pipeline; A front sensor, installed in the steam transmission pipeline, is used to detect the steam pressure before it enters the first regulating valve and the second regulating valve; The rear sensor, installed in the steam transmission pipeline, is used to detect the steam pressure coming out of the first regulating valve and the second regulating valve; A control mechanism, wherein the input signal terminals of the control mechanism are respectively connected to the front sensor and the rear sensor, and the output signal terminals of the control mechanism are respectively connected to the first regulating valve and the second regulating valve; and a local display screen is used to display the values ​​of the front sensor, the rear sensor, the first regulating valve and the second regulating valve, and to monitor the first regulating valve and the second regulating valve locally. The host computer monitoring mechanism is used to display the values ​​of the front sensor, the rear sensor, the first regulating valve, and the second regulating valve, and to remotely monitor the first regulating valve and the second regulating valve. The control mechanism, the local display screen, and the host computer monitoring mechanism are connected via an industrial Ethernet network. The control mechanism includes a PID controller. The method includes: Obtain the pre-regulation steam pressure and the post-regulation steam pressure; The difference between the calculated steam pressure and the preset pressure is saved as the trigger value; The trigger value is input to the control mechanism. If the trigger value is not equal to zero, the control mechanism calculates and outputs adjustment commands to the first and second regulating valves respectively. The first and second regulating valves are installed in parallel on the steam transmission pipeline. The opening degrees of the first regulating valve and the second regulating valve are adjusted according to the adjustment command; The trigger value is input to the control mechanism. If the trigger value is equal to zero, the control mechanism has no output signal, and the first and second regulating valves maintain their opening at this moment. The method involves inputting a trigger value to the control mechanism. If the trigger value is not equal to zero, the control mechanism calculates and outputs adjustment commands to the first and second control valves respectively. Set the preset pressure to 10 Bar; When 18 Bar ≤ front steam pressure ≤ 22 Bar, the first regulating valve is selected as the working valve, the control mechanism outputs a regulating command to the first regulating valve, the first regulating valve adjusts its opening according to the regulating command, the control mechanism outputs a closing command to the second regulating valve, the second regulating valve adjusts its opening to zero according to the closing command; When 12Bar≤front steam pressure<18Bar, the first regulating valve and the second regulating valve are selected as working valves. The control mechanism's regulation command is transmitted to the first regulating valve and the second regulating valve respectively. The first regulating valve and the second regulating valve adjust their opening degree according to the regulation command. When 12 Bar > front steam pressure or front steam pressure > 22 Bar, the control mechanism outputs a shut-off command, which is transmitted to the first regulating valve and the second regulating valve respectively. The first regulating valve and the second regulating valve adjust their opening to zero according to the shut-off command, and the control mechanism outputs an alarm.

2. The method according to claim 1, characterized in that, When 12 Bar ≤ front steam pressure < 18 Bar, the first regulating valve and the second regulating valve are selected as working valves. The control mechanism transmits the regulation command to the first regulating valve and the second regulating valve respectively. The first regulating valve and the second regulating valve adjust their opening degree according to the regulation command. The method includes: The control mechanism outputs adjustment commands; After processing the adjustment command according to the following formula, the first control command and the second control command are output to the first control valve and the second control valve respectively: ， in, To control The signal segment, The value is 50. To control signal segment, The value is 30. This is the first control command. This is the second control command; The opening degrees of the first regulating valve and the second regulating valve are adjusted according to the first control command and the second control command, respectively.

3. The method according to claim 2, characterized in that, In the step of processing the adjustment command according to the following formula and outputting the first control command and the second control command to the first regulating valve and the second regulating valve respectively, when the first control command and the second control command are less than 1, the opening of the corresponding regulating valve is adjusted to zero; when the first control command and the second control command are greater than 1 and less than 2, the opening of the corresponding regulating valve is adjusted according to the adjustment command; when the first control command and the second control command are equal to 2, the opening of the corresponding regulating valve is adjusted to fully open.

4. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one piece of program code, which is loaded and executed by a processor to perform the operations described in any one of claims 1 to 2.

5. An electronic device, characterized in that, The electronic device includes one or more processors and one or more memories, the one or more memories storing at least one piece of program code, the at least one piece of program code being loaded and executed by the one or more processors to perform the operations performed by the method as described in any one of claims 1 to 2.

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