Methods, systems, and electronic equipment for determining output gas pressure

Abstract

This disclosure provides a method for determining output gas pressure, including: determining the resistance information of the gas transmission path corresponding to each user terminal; determining the output gas mass flow rate of the supply terminal; for each output gas pressure in the output gas pressure test set pre-configured for the supply terminal, performing the following steps: determining the input gas pressure of each user terminal based on the selected output gas pressure and the resistance information of each gas transmission path, and detecting whether the input gas pressure of each user terminal is within the preset input gas pressure range corresponding to each user terminal; if so, the selected output gas pressure is used as a candidate output gas pressure; determining the pipeline network efficiency of the gas transmission network when the supply terminal outputs using the selected candidate output gas pressure based on the output gas mass flow rate required by the supply terminal; and determining the final output gas pressure of the supply terminal based on the pipeline network efficiency when the supply terminal outputs under different candidate output gas pressures.

Description

Technical Field

[0001] This disclosure relates to the field of gas pipeline design technology, and in particular to a method, system and electronic equipment for determining output gas pressure. Background Technology

[0002] In recent years, the proportion of different energy medium gases in my country's energy consumption has increased rapidly, and the construction of pipeline networks for multiple energy mediums (including but not limited to natural gas, compressed air, and other energy medium gases) has been accelerating. Ensuring efficient energy conservation and reliable gas supply from gas pipeline networks has become a crucial issue concerning economic development and social stability. However, the pipeline network is complex, and user-end (also known as "demand side") pressures change irregularly over time. Therefore, designing the output gas pressure at the supply end based on the user-end and pipeline network conditions is a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0003] This disclosure aims to solve at least one of the technical problems existing in the prior art, and proposes a method, system and electronic equipment for determining output gas pressure.

[0004] In a first aspect, this disclosure provides a method for determining the output gas pressure, including:

[0005] Determine the resistance information of the gas transmission path corresponding to each user terminal. One end of the gas transmission path is connected to the corresponding user terminal, and the other end of the gas transmission path is connected to the supply end.

[0006] The required output gas mass flow rate of the supply end is determined based on the input gas mass flow rate required by each user terminal.

[0007] For each output gas pressure in the output gas pressure test set pre-configured for the supply end, the following steps are performed: Based on the selected output gas pressure, the resistance information of the gas transmission path corresponding to each user end, and the required input gas mass flow rate of each user end, the input gas pressure of each user end is determined, and it is detected whether the input gas pressure of each user end is within the preset input gas pressure range corresponding to each user end. If so, the selected output gas pressure is used as the candidate output gas pressure.

[0008] For each of the alternative output gas pressures, determine the network energy efficiency of the gas transmission network formed by all the gas transmission passages when the supply end outputs the gas at the selected alternative output gas pressure.

[0009] The final output gas pressure of the supply end is determined based on the pipeline energy efficiency when the supply end outputs gas at different alternative output gas pressures.

[0010] In some embodiments, the step of determining the resistance information of the gas transmission path corresponding to each user terminal includes:

[0011] Obtain the resistance coefficient of each pipeline unit in the pipeline network;

[0012] For each user terminal corresponding to the gas transmission path, the equivalent resistance coefficient of the gas transmission path as a whole is determined based on the series and parallel connection relationship and resistance coefficient of each pipeline unit in the selected gas transmission path corresponding to the user terminal.

[0013] The resistance information of the gas transmission path is the equivalent resistance coefficient of the entire gas transmission path.

[0014] In some embodiments, in the step of determining the input gas pressure of each user terminal based on the selected output gas pressure, the resistance information of the gas delivery path corresponding to each user terminal, and the required input gas mass flow rate of each user terminal, the input gas pressure of each user terminal is determined according to the following formula:

[0015] P i =P0-m i 2 *R i

[0016] P0 is the selected output gas pressure, P i Let m be the input gas pressure of the i-th user terminal. i R is the required input gas mass flow rate for the i-th user terminal. i Let be the equivalent resistance coefficient of the gas transmission path corresponding to the i-th user terminal, where 1 ≤ i ≤ N and i is an integer, and N is the total number of user terminals.

[0017] In some embodiments, the required output gas mass flow rate of the supply end is greater than or equal to the sum of the input gas mass flow rates of all the user ends.

[0018] In some embodiments, the step of determining the network energy efficiency of the gas transmission network formed by all the gas transmission passages when the supply end outputs gas at the selected alternative output gas pressure includes:

[0019] Determine the sum of the pneumatic power at all user terminals when the supply end outputs the gas using the selected alternative output gas pressure, and the pneumatic power at the supply end.

[0020] The ratio of the sum of all pneumatic power at the user end to the pneumatic power at the supply end is used as the pipeline energy efficiency of the gas transmission network when the supply end outputs gas using the selected alternative output gas pressure.

[0021] In some embodiments, the step of determining the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas at different alternative output gas pressures includes:

[0022] The candidate output gas pressure that corresponds to a pipeline energy efficiency greater than or equal to a preset pipeline energy efficiency threshold shall be used as the final output gas pressure.

[0023] In some embodiments, the step of determining the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas at different alternative output gas pressures includes:

[0024] The pipeline energy efficiency corresponding to all the candidate output gas pressures is sorted, and the candidate output gas pressures corresponding to the M pipeline energy efficiencies with the highest pipeline energy efficiency are taken as the final output gas pressures, where M is a preset positive integer.

[0025] In some embodiments, after determining the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas at different alternative output gas pressures, the method further includes:

[0026] Based on the determined final output gas pressure of the supply end, the operating range of the output gas pressure of the supply end is determined.

[0027] In a second aspect, embodiments of this disclosure provide an output gas pressure determination system, which can be used to implement the output gas pressure determination method described in the first aspect above. The output gas pressure determination system includes:

[0028] The first determining module is configured to determine the resistance information of the gas transmission path corresponding to each user terminal, wherein one end of the gas transmission path is connected to the corresponding user terminal and the other end of the gas transmission path is connected to the supply end.

[0029] The second determining module is configured to determine the output gas mass flow rate required by the supply end based on the input gas mass flow rate required by each user terminal.

[0030] The testing module is configured to perform the following steps for each output gas pressure in the output gas pressure test set pre-configured for the supply end: based on the selected output gas pressure, the resistance information of the gas transmission path corresponding to each user end, and the required input gas mass flow rate of each user end, determine the input gas pressure of each user end, and detect whether the input gas pressure of each user end is within the preset input gas pressure range corresponding to each user end. If so, the selected output gas pressure is used as a candidate output gas pressure.

[0031] The third determining module is configured to determine the network energy efficiency of the gas transmission network formed by all the gas transmission passages when the supply end outputs the gas using the selected alternative output gas pressure for each alternative output gas pressure.

[0032] The fourth determining module is configured to determine the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas at different alternative output gas pressures.

[0033] Thirdly, embodiments of this disclosure provide an electronic device, comprising:

[0034] One or more processors;

[0035] Memory, used to store one or more programs;

[0036] When the one or more programs are executed by the one or more processors, the one or more processors implement the output gas pressure determination method as provided in the first aspect. Attached Figure Description

[0037] Figure 1 This is a flowchart of a method for determining output gas pressure provided in an embodiment of this disclosure.

[0038] Figure 2 This is a structural block diagram of a gas pipeline network system according to an embodiment of this disclosure.

[0039] Figure 3 A flowchart of another method for determining output gas pressure provided in an embodiment of this disclosure.

[0040] Figure 4 This is a structural block diagram of an output gas pressure determination system provided in an embodiment of the present disclosure.

[0041] Figure 5 This is a structural block diagram of an electronic device provided in an embodiment of the present disclosure. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solutions of this disclosure, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0044] In the various figures, the same elements are represented by similar reference numerals. For clarity, not all parts in the figures are drawn to scale. Furthermore, some well-known parts may not be shown in the figures.

[0045] Many specific details of this disclosure, such as the structure, materials, dimensions, processing methods, and techniques of the components, are described below to provide a clearer understanding of the disclosure. However, as those skilled in the art will understand, this disclosure may be implemented without following these specific details.

[0046] Figure 1 This is a flowchart of a method for determining output gas pressure provided in an embodiment of this disclosure. Figure 2 This is a structural block diagram of a gas pipeline network system according to an embodiment of this disclosure. Figure 1 and Figure 2 As shown, the gas transmission pipeline system includes: a supply end, a gas transmission pipeline, and at least one user end. The supply end can supply gas to each user end through the gas transmission pipeline. For each user end, there is a corresponding gas transmission path within the gas transmission pipeline. One end of the gas transmission path is connected to the supply end, and the other end of the gas transmission path is connected to the user end.

[0047] In some embodiments, the supply side may specifically be a compressed air station.

[0048] It is important to emphasize that, in this disclosure, a gas transmission path corresponding to a user end does not refer to a single gas pipeline, but rather to the collection of all pipelines through which the gas flows when the supply end transmits gas to the corresponding user end via the gas transmission network. In other words, a gas transmission path may include one or more gas transmission routes (also referred to as "gas transmission branches"), and these gas transmission routes can be connected in series, parallel, or other forms. The technical solution of this disclosure does not limit the number of gas transmission routes included in the gas transmission path, or the series or parallel connection relationship of each gas transmission branch.

[0049] exist Figure 2 The diagram illustrates an example of a pipeline system with N gas transmission paths corresponding to N user terminals. This illustration is for illustrative purposes only and does not limit the technical solutions disclosed herein.

[0050] See Figure 1 As shown, the method for determining the output gas pressure includes:

[0051] Step S1: Determine the resistance information of the gas transmission path corresponding to each user terminal.

[0052] One end of the gas transmission channel is connected to the corresponding user end, and the other end of the gas transmission channel is connected to the supply end.

[0053] Step S2: Determine the required output gas mass flow rate of the supply end based on the input gas mass flow rate required by each user terminal.

[0054] Step S3: For each output gas pressure in the pre-configured output gas pressure test set for the supply end, perform the following steps: Based on the selected output gas pressure, the resistance information of the gas transmission path corresponding to each user end, and the required input gas mass flow rate of each user end, determine the input gas pressure of each user end, and check whether the input gas pressure of each user end is within the preset input gas pressure range corresponding to each user end; if so, the selected output gas pressure is used as a candidate output gas pressure; if not, the processing of the currently selected output gas pressure ends, and the next output gas pressure in the output gas pressure test set is processed accordingly.

[0055] Step S4: For each alternative output gas pressure, determine the pipeline energy efficiency of the gas transmission network formed by all gas transmission paths when the supply end uses the selected alternative output gas pressure for output, based on the mass flow rate of the output gas required by the supply end.

[0056] Step S5: Determine the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas under different alternative output gas pressures.

[0057] In this embodiment of the disclosure, an output gas pressure test set is pre-designed for the supply end. The output gas pressure test set includes multiple output gas pressures. For each output gas pressure in the output gas pressure test set, based on the resistance information of the gas transmission path corresponding to each user end and the required input gas mass flow rate of each user end, the input gas pressure of each user end when the supply end uses the selected output gas pressure is determined. Then, based on the preset input gas pressure range corresponding to each user end, alternative output gas pressures are determined. Finally, the final output gas pressure of the supply end is determined based on the pipeline energy efficiency of the gas transmission network.

[0058] The technical solution disclosed herein can determine the final output gas pressure at the supply end by combining the gas mass flow rate and output gas pressure of the gas output at the supply end with the network energy efficiency of the gas transmission network, so that the gas transmission network can be at a relatively high energy efficiency level.

[0059] It should be noted that in the technical solution of this disclosure, it is only necessary to ensure that step S2 is executed before step S4. The case in the attached figure where step S2 is located between step S1 and step S3 is only an optional implementation scheme in this disclosure.

[0060] Figure 3 A flowchart of another method for determining output gas pressure provided in this embodiment of the disclosure is shown below. Figure 3 As shown. Figure 3 The method for determining the output gas pressure shown is based on Figure 1 One specific alternative implementation of the method shown is... Figure 3 The methods for determining the output gas pressure shown include:

[0061] Step S101: Obtain the resistance coefficient of each pipeline unit in the pipeline network.

[0062] In some embodiments, the gas transmission route is composed of pipeline units, which may include fittings and pipes. Fittings may include bends / elbows, reducers, tees, and valves. The resistance coefficient of the pipeline unit can be obtained by querying a pre-stored pipeline unit database (which records different pipeline units and their corresponding resistance coefficients), or by calculation based on the parameter information of the pipeline unit.

[0063] As an example, the parameter information includes the size, material, and surface treatment information of different pipe network units. Based on the material and surface treatment information, the corresponding pipe surface roughness, i.e., the resistance coefficient, can be obtained. For example, as follows:

[0064] The resistance coefficient Rg of a pipeline can be obtained using the following formula:

[0065]

[0066] The resistance coefficient Rw of a bend / elbow can be obtained by the following formula:

[0067]

[0068] The resistance coefficient Rj of the reducing joint can be obtained by the following formula:

[0069]

[0070]

[0071] ψ1=S1 / S0

[0072]

[0073]

[0074]

[0075] The resistance coefficient Rs of the tee can be obtained by the following formula:

[0076]

[0077] The resistance coefficient Rf of the valve can be obtained by the following formula:

[0078]

[0079] In the above formula, λ is the friction loss coefficient, D is the inner diameter of the pipe network unit, L is the length of the pipe network unit, ρ is the airflow density, ξ1, ξ3, and ξ4 are the given empirical values ​​of elbows, tees, and valves, respectively, L0 is the length of the reducing joint, D1 is the outlet diameter, and D0 is the inlet diameter.

[0080] Step S102: For each gas transmission path corresponding to a user terminal, determine the overall equivalent resistance coefficient of the gas transmission path based on the series and parallel connections and resistance coefficients of each pipeline unit in the selected gas transmission path corresponding to the user terminal, and use the resistance information of the gas transmission path as the overall equivalent resistance coefficient of the gas transmission path.

[0081] For any gas transmission path, a calculation method similar to that used in circuits can be employed. Based on the series and parallel connections of each pipeline unit within the path and their resistance coefficients, the overall equivalent resistance coefficient of the gas transmission path can be determined. This approach allows each gas transmission path to be treated as having only one transmission route, thus facilitating subsequent calculations.

[0082] As an example, the equivalent resistance coefficient of two pipe network units connected in series can be calculated using the following formula:

[0083] R'=R1+R2

[0084] The equivalent resistance coefficient of two parallel pipe network units can be calculated using the following formula:

[0085]

[0086] Where R' is the equivalent resistance coefficient of the two pipeline units, and R1 and R2 are the resistance coefficients of the two pipeline units.

[0087] Similarly, based on the above formula, the equivalent resistance coefficients of three or more pipe network units connected in series, as well as the equivalent resistance coefficients of three or more pipe network units connected in parallel, can be calculated. This will not be elaborated further here.

[0088] Step S2: Determine the required output gas mass flow rate of the supply end based on the input gas mass flow rate required by each user terminal.

[0089] Among them, the required output gas mass flow rate of the supply side is greater than or equal to the sum of the input gas mass flow rates of all users.

[0090] As an example,

[0091] Where, m i This represents the mass flow rate of the input gas required by the i-th user terminal, N is the total number of user terminals, and m0 represents the mass flow rate of the gas released from the gas pipeline network (m0≥0 kg / s, m0 can be set to a specific value based on actual experience).

[0092] Step S3: For each output gas pressure in the pre-configured output gas pressure test set for the supply end, perform the following steps: Based on the selected output gas pressure, the resistance information of the gas transmission path corresponding to each user end, and the required input gas mass flow rate of each user end, determine the input gas pressure of each user end, and check whether the input gas pressure of each user end is within the preset input gas pressure range corresponding to each user end. If so, the selected output gas pressure is used as the alternative output gas pressure.

[0093] In some embodiments, in the step of determining the input gas pressure of each user terminal based on the selected output gas pressure, the resistance information of the gas delivery path corresponding to each user terminal, and the required input gas mass flow rate of each user terminal, the input gas pressure of each user terminal is determined according to the following formula:

[0094] P i =P0-m i 2 *R i

[0095] P0 is the selected output gas pressure, P i Let m be the input gas pressure of the i-th user terminal. i R is the required input gas mass flow rate for the i-th user terminal. i Let be the equivalent resistance coefficient of the gas transmission path corresponding to the i-th user terminal, where 1 ≤ i ≤ N and i is an integer, and N is the total number of user terminals.

[0096] Step S401: Determine the sum of the pneumatic power at all user terminals and the pneumatic power at the supply end when the supply end outputs the selected alternative output gas pressure.

[0097] The aerodynamic power of the airflow at a certain location can be calculated using the following formula:

[0098]

[0099]

[0100] Where P represents the aerodynamic power of the airflow at the corresponding location, and p represents the gas pressure at the corresponding location. a q represents atmospheric absolute pressure. v This represents the volumetric flow rate of the airflow (gas in a compressed state) at the corresponding location. m represents the mass flow rate of the airflow at the corresponding location, and ρ is the airflow density.

[0101] Based on the aerodynamic power of the airflow described above, the sum of the aerodynamic power P at all user ends can be obtained. all And the pneumatic power P0 at the supply end.

[0102]

[0103]

[0104] Where, p i q represents the input gas pressure at the i-th user terminal. vi p0 represents the gas volumetric flow rate at the i-th user terminal, p0 represents the output gas pressure at the supply terminal, and q represents the gas volumetric flow rate at the i-th user terminal. v0 This indicates the gas volume flow rate at the supply end.

[0105] Step S402: The ratio of the sum of pneumatic power at all user ends to the pneumatic power at the supply end is used as the pipeline energy efficiency of the gas transmission network when the supply end outputs the gas using the selected alternative output gas pressure.

[0106] The pipeline energy efficiency η1 of the gas transmission pipeline network is:

[0107]

[0108] Step S5: Determine the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas under different alternative output gas pressures.

[0109] As an optional implementation, the candidate output gas pressure with the corresponding pipeline energy efficiency greater than or equal to the preset pipeline energy efficiency threshold is taken as the final output gas pressure.

[0110] As another optional implementation scheme, the pipeline energy efficiency corresponding to all candidate output gas pressures is sorted, and the candidate output gas pressures corresponding to the M pipeline energy efficiencies with the highest pipeline energy efficiency are taken as the final output gas pressures, where M is a preset positive integer.

[0111] It should be noted that after obtaining the pipeline energy efficiency at different alternative output gas pressures, the final output gas pressure can be determined from the alternative output gas pressures based on the actual situation. This disclosure does not limit the specific algorithm. For example, the scheme with the higher corresponding pipeline energy efficiency should be selected as much as possible.

[0112] In some embodiments, step S5 is followed by step S6.

[0113] Step S6: Determine the operating range of the output gas pressure of the supply end based on the determined final output gas pressure of the supply end.

[0114] In practical applications, to reduce computational load, the number of output gas pressures in the output gas pressure test set is generally small and discretely distributed. Therefore, the number of final output gas pressures obtained through step S5 is also small and discretely distributed. However, in practical applications, it is generally necessary to have continuously adjustable output gas pressure at the supply end. Therefore, in this disclosure, the operating range of the output gas pressure at the supply end can be determined based on the final output gas pressure obtained in step S5. For example, the lower limit of the operating range is the minimum value of the final output gas pressure obtained in step S5, and the upper limit is the maximum value of the final output gas pressure obtained in step S5. Alternatively, for each final output gas pressure determined in step S5, a corresponding offset can be configured to obtain the operating range of the output gas pressure corresponding to that final output gas pressure.

[0115] It should be noted that this disclosure does not limit the specific algorithm for setting the output gas pressure operating range based on the final output gas pressure obtained in step S5.

[0116] In addition, in some other embodiments, the corresponding scenario information (including: number of user terminals, gas transmission path resistance information of each user terminal, input gas mass flow rate of each user terminal), the final output gas pressure obtained in step S5 and / or the output gas pressure operating range obtained in step S6 can be stored in the database so that when the same application scenario occurs, the corresponding "final output gas pressure" and / or "output gas pressure operating range" can be directly obtained from the database for easy retrieval.

[0117] Based on the same inventive concept, this disclosure provides an output gas pressure determination system, which can be used to implement the output gas pressure determination method provided in the previous embodiments. Figure 4 This is a structural block diagram of an output gas pressure determination system provided in an embodiment of this disclosure. Figure 4 As shown, the output gas pressure determination system includes:

[0118] The first determining module is configured to determine the resistance information of the gas transmission path corresponding to each user terminal. One end of the gas transmission path is connected to the corresponding user terminal, and the other end of the gas transmission path is connected to the supply end.

[0119] The second determining module is configured to determine the output gas mass flow rate required by the supply end based on the input gas mass flow rate required by each user terminal.

[0120] The testing module is configured to perform the following steps for each output gas pressure in the pre-configured output gas pressure test set for the supply end: Based on the selected output gas pressure, the resistance information of the gas transmission path corresponding to each user end, and the required input gas mass flow rate of each user end, determine the input gas pressure of each user end, and detect whether the input gas pressure of each user end is within the preset input gas pressure range corresponding to each user end. If so, the selected output gas pressure is used as the alternative output gas pressure.

[0121] The third determining module is configured to determine the network energy efficiency of the gas transmission network formed by all gas transmission paths when the supply end outputs the gas at the selected alternative output gas pressure for each alternative output gas pressure.

[0122] The fourth determining module is configured to determine the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas under different alternative output gas pressures.

[0123] Figure 5 This is a structural block diagram of an electronic device provided in an embodiment of this disclosure. Figure 5As shown, the electronic device includes one or more processors 101 and a memory 102. The memory 102 stores one or more programs that, when executed by the one or more processors 101, cause the one or more processors to implement an output gas pressure determination method as described in any of the above embodiments.

[0124] In some embodiments, the electronic device further includes one or more I / O interfaces 103, which are connected between the processor and the memory and configured to enable information interaction between the processor and the memory.

[0125] The processor 101 is a device with data processing capabilities; the memory 102 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH); the I / O interface (read-write interface) 103 is connected between the processor 101 and the memory 102, and can realize information interaction between the processor 101 and the memory 102, including but not limited to data bus (Bus).

[0126] In some embodiments, the execution processor 101, memory 102, and I / O interface 103 are interconnected via bus 104, and thus connected to other components of the computing device.

[0127] In some embodiments, the execution processor 101 includes an FPGA; a program in memory may be loaded into the FPGA before implementing the gas pressure determination method provided herein.

[0128] According to embodiments of this disclosure, a computer-readable medium is also provided. This computer-readable medium stores a computer program, which, when executed by an execution processor, implements the steps in the output gas pressure determination method as described in any of the above embodiments.

[0129] In particular, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a machine-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication component, and / or installed from a removable medium. When the computer program is executed by a central processing unit (CPU), it performs the functions defined above in the system of this disclosure.

[0130] It should be noted that the computer-readable medium disclosed herein may be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-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 a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer 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 device, magnetic storage device, or any suitable combination thereof. In this disclosure, a computer-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. In this disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-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. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0131] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0132] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A method for determining output gas pressure, characterized in that, include: Determine the resistance information of the gas transmission path corresponding to each user terminal. One end of the gas transmission path is connected to the corresponding user terminal, and the other end of the gas transmission path is connected to the supply end. The required output gas mass flow rate of the supply end is determined based on the input gas mass flow rate required by each user terminal. For each output gas pressure in the output gas pressure test set pre-configured for the supply end, the following steps are performed: Based on the selected output gas pressure, the resistance information of the gas transmission path corresponding to each user end, and the required input gas mass flow rate of each user end, the input gas pressure of each user end is determined, and it is detected whether the input gas pressure of each user end is within the preset input gas pressure range corresponding to each user end. If so, the selected output gas pressure is used as the candidate output gas pressure. For each of the alternative output gas pressures, the network efficiency of the gas transmission network formed by all the gas transmission passages is determined based on the mass flow rate of the output gas required by the supply end. The final output gas pressure of the supply end is determined based on the pipeline energy efficiency when the supply end outputs gas at different alternative output gas pressures.

2. The method according to claim 1, characterized in that, The step of determining the resistance information of the gas transmission path corresponding to each user terminal includes: Obtain the resistance coefficient of each pipeline unit in the pipeline network; For each user terminal corresponding to the gas transmission path, the equivalent resistance coefficient of the gas transmission path as a whole is determined based on the series and parallel connection relationship and resistance coefficient of each pipeline unit in the selected gas transmission path corresponding to the user terminal. The resistance information of the gas transmission path is the equivalent resistance coefficient of the entire gas transmission path.

3. The method according to claim 2, characterized in that, In the step of determining the input gas pressure of each user terminal based on the selected output gas pressure, the resistance information of the gas transmission path corresponding to each user terminal, and the required input gas mass flow rate of each user terminal, the input gas pressure of each user terminal is determined according to the following formula: P i =P0-m i 2 *R i P0 is the selected output gas pressure, P i Let m be the input gas pressure of the i-th user terminal. i R is the required input gas mass flow rate for the i-th user terminal. i Let be the equivalent resistance coefficient of the gas transmission path corresponding to the i-th user terminal, where 1 ≤ i ≤ N and i is an integer, and N is the total number of user terminals.

4. The method according to claim 1, characterized in that, The required output gas mass flow rate from the supply end is greater than or equal to the sum of the input gas mass flow rates from all the user ends.

5. The method according to claim 1, characterized in that, The step of determining the pipeline energy efficiency of the gas transmission network formed by all the gas transmission passages when the supply end outputs gas at the selected alternative output gas pressure based on the required output gas mass flow rate of the supply end includes: Determine the sum of the pneumatic power at all user terminals when the supply end outputs the gas using the selected alternative output gas pressure, and the pneumatic power at the supply end. The ratio of the sum of all pneumatic power at the user end to the pneumatic power at the supply end is used as the pipeline energy efficiency of the gas transmission network when the supply end outputs gas using the selected alternative output gas pressure.

6. The method according to claim 1, characterized in that, The step of determining the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas at different alternative output gas pressures includes: The candidate output gas pressure that corresponds to a pipeline energy efficiency greater than or equal to a preset pipeline energy efficiency threshold is taken as the final output gas pressure.

7. The method according to claim 1, characterized in that, The step of determining the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas at different alternative output gas pressures includes: The pipeline energy efficiency corresponding to all the candidate output gas pressures is sorted, and the candidate output gas pressures corresponding to the M pipeline energy efficiencies with the highest pipeline energy efficiency are taken as the final output gas pressures, where M is a preset positive integer.

8. The method according to any one of claims 1 to 7, characterized in that, After determining the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas at different alternative output gas pressures, the method further includes: Based on the determined final output gas pressure of the supply end, the operating range of the output gas pressure of the supply end is determined.

9. A system for determining output gas pressure, characterized in that, The output gas pressure determination system can be used to implement the output gas pressure determination method according to any one of claims 1 to 8, and the output gas pressure determination system includes: The first determining module is configured to determine the resistance information of the gas transmission path corresponding to each user terminal, wherein one end of the gas transmission path is connected to the corresponding user terminal and the other end of the gas transmission path is connected to the supply end. The second determining module is configured to determine the output gas mass flow rate required by the supply end based on the input gas mass flow rate required by each user terminal. The testing module is configured to perform the following steps for each output gas pressure in the output gas pressure test set pre-configured for the supply end: based on the selected output gas pressure, the resistance information of the gas transmission path corresponding to each user end, and the required input gas mass flow rate of each user end, determine the input gas pressure of each user end, and detect whether the input gas pressure of each user end is within the preset input gas pressure range corresponding to each user end. If so, the selected output gas pressure is used as a candidate output gas pressure. The third determining module is configured to determine the network energy efficiency of the gas transmission network formed by all the gas transmission passages when the supply end outputs the gas using the selected alternative output gas pressure for each alternative output gas pressure. The fourth determining module is configured to determine the final output gas pressure of the supply end based on the pipeline energy efficiency when the supply end outputs gas at different alternative output gas pressures.

10. An electronic device, wherein, include: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the output gas pressure determination method as described in any one of claims 1 to 8.

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