A method for selecting a circulating cooling water booster pump for a bypass piping system

Abstract

The present invention provides a method for selecting a bypass piping system circulating cooling water booster pump, and relates to the technical field of energy-saving of a steam turbine cold end system. The method comprises: obtaining booster pump data of a bypass piping system circulating cooling water booster pump, and constructing and updating a bypass piping system circulating cooling water booster pump selection database; performing a primary selection of the booster pump according to user selection requirements, and constructing a booster pump pre-selection set; calculating the bypass piping system circulating cooling water water resistance, and performing a secondary selection of the booster pump according to a corresponding selection score determined according to a user selection evaluation standard, and determining a finally selected bypass piping system circulating cooling water booster pump; visually outputting and displaying performance parameters, performance curves, and installation data diagrams; and effectively ensuring the accurate selection of the bypass piping system circulating cooling water booster pump.

Description

Technical Field

[0001] The invention relates to the technical field of energy-saving of a cold end system of a steam turbine, and in particular to a method for selecting a circulating cooling water booster pump of a bypass pipeline system. Background Art

[0002] With the development of thermal power generation technology, power plants generally use steam turbines to drive motors; steam turbines can directly convert thermal energy into wind energy, reducing energy loss and thus improving the operating efficiency of power plant units; and the working efficiency of steam turbines is limited by the circulating cooling water booster pump of the bypass pipe system. When there is a deviation in the selection, the circulating cooling water flow rate during the actual operation of the unit is reduced, which in turn leads to an increase in the back pressure of the steam turbine and a decrease in working efficiency, which seriously affects the efficiency of thermal power generation.

[0003] Therefore, the present invention provides a method for selecting a circulating cooling water booster pump for a bypass piping system. Summary of the invention

[0004] The present invention provides a method for selecting a circulating cooling water booster pump for a bypass piping system, which is used for constructing and updating a bypass piping system circulating cooling water booster pump selection database by acquiring booster pump data of the bypass piping system circulating cooling water booster pump; performing a primary selection of the booster pump according to user selection requirements, and constructing a booster pump pre-selection set; calculating the bypass piping system circulating cooling water water resistance, determining a corresponding selection score according to user selection evaluation criteria, and performing a secondary selection of the booster pump, and determining a finally selected bypass piping system circulating cooling water booster pump; visually outputting and displaying performance parameters, performance curves, and installation data diagrams; and effectively ensuring the accurate selection of the bypass piping system circulating cooling water booster pump.

[0005] The present invention provides a method for selecting a circulating cooling water booster pump for a bypass pipeline system, comprising:

[0006] Step 1: Acquire booster pump data of a bypass piping system circulating cooling water booster pump, and construct and update a bypass piping system circulating cooling water booster pump selection database, wherein the booster pump data includes: booster pump design data, booster pump update data, and booster pump feedback data;

[0007] Step 2: Select the booster pump from the bypass pipe system circulating cooling water booster pump selection database according to the user's selection requirements, and build a booster pump pre-selection set;

[0008] Step 3: Calculate the bypass pipe system circulating cooling water resistance of each bypass pipe system circulating cooling water booster pump in the booster pump pre-selection set, determine the corresponding selection score according to the user selection evaluation standard, perform secondary selection of the booster pump, and determine the final selected bypass pipe system circulating cooling water booster pump;

[0009] Step 4: Visually output and display the performance parameters, performance curves and installation data diagram of the finally selected bypass pipe system circulating cooling water booster pump.

[0010] According to a method for selecting a circulating cooling water booster pump of a bypass pipe system provided by the present invention, booster pump data of a circulating cooling water booster pump of a bypass pipe system is obtained, and a selection database for a circulating cooling water booster pump of a bypass pipe system is constructed and updated, including:

[0011] Acquire the booster pump design data of the bypass piping system circulating cooling water booster pump according to the booster pump standard parameter data, build a bypass piping system circulating cooling water booster pump selection database and divide the database according to the type, size and performance of the bypass piping system circulating cooling water booster pump;

[0012] Obtain booster pump update data and booster pump feedback data of the bypass piping system circulating cooling water booster pump, and update the bypass piping system circulating cooling water booster pump selection database;

[0013] When the user is selecting a circulating cooling water booster pump for a bypass piping system, the user selection requirements are obtained and analyzed, the corresponding bypass piping system circulating cooling water booster pump selection database is connected and the corresponding selection data is called.

[0014] According to a method for selecting a circulating cooling water booster pump of a bypass pipe system provided by the present invention, the booster pump update data and booster pump feedback data of the circulating cooling water booster pump of the bypass pipe system are obtained, and a selection database of the circulating cooling water booster pump of the bypass pipe system is updated, including:

[0015] According to the preset data update strategy, the updated data of the booster pump manufacturer and the modified data of the booster pump engineer are obtained to determine the booster pump update data of the bypass pipe system circulating cooling water booster pump;

[0016] The booster pump feedback data of the bypass pipe system circulating cooling water booster pump is obtained according to the feedback data of the booster pump users, and the bypass pipe system circulating cooling water booster pump selection database is updated.

[0017] A method for selecting a bypass pipe system circulating cooling water booster pump according to the present invention also includes:

[0018] When it is detected that there is data update in the bypass pipe system circulating cooling water booster pump selection database, the updated data will be processed according to the standard data format, and the data will be updated after the data standard processing is completed;

[0019] When it is detected that there is user access to the bypass pipe system circulating cooling water booster pump selection database, the user is allowed to input user selection requirements for data screening and processing;

[0020] Automatically monitor data updates. When it detects that there is data update in the circulating cooling water booster pump of the bypass pipe system selected by the user, it reminds the user to update the data.

[0021] According to a method for selecting a bypass pipe system circulating cooling water booster pump provided by the present invention, a booster pump is selected once from a bypass pipe system circulating cooling water booster pump selection database according to user selection requirements, and a booster pump pre-selection set is constructed, including:

[0022] Preset the selection input options for the user when selecting the bypass pipe system circulating cooling water booster pump, and quantitatively determine the user's selection requirements at one time, wherein the selection input options include: bypass pipe system circulating cooling water booster pump type, expected flow, expected head, expected efficiency, expected power, expected performance and bypass pipe system circulating cooling water water resistance;

[0023] When the user completes the selection input options, the installation data diagram and size range options of the bypass piping system circulating cooling water booster pump that meet the selection input options are provided, and the user's selection requirements are determined by secondary quantification;

[0024] Determine the user selection requirement according to the first quantification and the second quantification;

[0025] According to the user selection requirements, a booster pump is selected once from a bypass pipe system circulating cooling water booster pump selection database to construct a booster pump pre-selection set.

[0026] A method for selecting a bypass pipe system circulating cooling water booster pump according to the present invention also includes:

[0027] Performing a selection simulation test on the booster pump primary selection according to a preset test strategy, and when it is monitored that the booster pump primary selection efficiency and the booster pump primary selection accuracy rate both meet the test standards, determining that the booster pump primary selection can be performed;

[0028] Otherwise, the selection range is adjusted and optimized according to the booster pump primary selection efficiency and the booster pump primary selection accuracy;

[0029] The preset test strategies include: automatic periodic cycle simulation test strategy and artificial random simulation test strategy.

[0030] According to a method for selecting a bypass pipe system circulating cooling water booster pump provided by the present invention, the bypass pipe system circulating cooling water water resistance of each bypass pipe system circulating cooling water booster pump in a booster pump pre-selection set is calculated, and a corresponding selection score is determined according to a user selection evaluation standard to perform secondary selection of the booster pump, and a bypass pipe system circulating cooling water booster pump of a final selection is determined, including:

[0031] According to the bypass pipe system circulating cooling water structure, the bypass pipe system circulating cooling water resistance is divided into structural water resistance, wherein the structural water resistance includes: pipe water resistance, secondary filter water resistance and condenser water resistance;

[0032] Obtain the normal operating structural water resistance of the circulating cooling water booster pumps of each bypass pipeline system in the booster pump preselection set when they are in normal operation and the full load operating structural water resistance when they are in full load operation;

[0033] The pipes, secondary filter screens and condensers in the bypass pipe system are connected in series, and the bypass pipe system circulating cooling water water resistance of each bypass pipe system circulating cooling water booster pump in the booster pump pre-selection set is calculated according to the hydraulic calculation characteristics of the series pipes;

[0034] ;in, Indicates the bypass piping system circulating cooling water resistance when the bypass piping system circulating cooling water booster pump is in normal operation; Indicates the bypass piping system circulating cooling water resistance when the bypass piping system circulating cooling water booster pump is running at full load; Indicates the bypass pipe impedance; Indicates the normal operating flow rate of the circulating cooling water in the bypass piping system when it is in normal operation; Indicates the secondary filter water resistance when the circulating cooling water in the bypass pipe system is in normal operation; Indicates the condenser water resistance when the circulating cooling water in the bypass piping system is in normal operation; Indicates the resistance coefficient along the bypass pipe system circulating cooling water; Indicates the total length of the bypass piping system; Indicates the average pipe diameter of the bypass pipe system; Indicates the flow rate of cooling water circulating in the bypass piping system; represents the acceleration due to gravity; It indicates the full load flow rate when the circulating cooling water in the bypass piping system is running at full load; Indicates the secondary filter water resistance when the circulating cooling water in the bypass pipe system is running at full load; Indicates the correction factor of the circulating cooling water in the bypass piping system when running at full load; It represents the full load flow rate of circulating cooling water in the i1th section of the bypass piping system; Indicates the pipe diameter of the i1th pipe section in the bypass pipe system; represents the full load water resistance of the circulating cooling water in the i1th pipe section of the bypass pipe system; n1 represents the number of segmented pipes in the bypass pipe system;

[0035] Determine the head of the circulating cooling water in the bypass pipe system according to the water resistance of the circulating cooling water in the bypass pipe system, and when the flow-head of the circulating cooling water booster pump in the bypass pipe system in the booster pump pre-selection set at the expected operating point is within a preset efficiency range, obtain the user selection evaluation standard;

[0036] If there is no user selection evaluation standard, the standard selection evaluation standard is called;

[0037] According to the user selection evaluation criteria / standard selection evaluation criteria, the flow rate, head, power and efficiency are weighted to determine the corresponding selection score for secondary selection of the booster pump, and the final selection of the bypass pipe system circulating cooling water booster pump is determined.

[0038] According to a method for selecting a bypass pipe system circulating cooling water booster pump provided by the present invention, the performance parameters, performance curves and installation data diagram of the finally selected bypass pipe system circulating cooling water booster pump are visually output and displayed, including:

[0039] Obtaining the performance parameters of the bypass pipe system circulating cooling water booster pump that is finally selected, determining the flow-head change curve and the flow-power change curve, performing curve fitting processing on the change curves according to a preset curve processing strategy, and determining the performance curve of the bypass pipe system circulating cooling water booster pump that is finally selected;

[0040] Access the installation data diagram database to determine the final selected installation data diagram of the bypass piping system circulating cooling water booster pump;

[0041] When the user limits the data format, the user data format is obtained, the installation data diagram of the bypass pipe system circulating cooling water booster pump finally selected is called and the data format is converted;

[0042] The performance parameters, the performance curve and the installation data diagram are visually output and displayed.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] Obtain booster pump data of bypass piping system circulating cooling water booster pump, build and update bypass piping system circulating cooling water booster pump selection database; perform primary selection of booster pump according to user selection requirements, and build a booster pump pre-selection set; calculate the bypass piping system circulating cooling water water resistance, determine the corresponding selection score according to user selection evaluation standards, perform secondary selection of booster pump, and determine the final selected bypass piping system circulating cooling water booster pump; visualize performance parameters, performance curves and installation data diagrams for output display; effectively ensure the accurate selection of bypass piping system circulating cooling water booster pump.

[0045] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0046] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 The present invention is a flowchart of a method for selecting a circulating cooling water booster pump for a bypass pipe system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Embodiment 1:

[0051] like Figure 1 As shown, an embodiment of the present invention provides a method for selecting a circulating cooling water booster pump for a bypass pipe system, and the method mainly includes the following steps:

[0052] Step 1: Acquire booster pump data of a bypass piping system circulating cooling water booster pump, and construct and update a bypass piping system circulating cooling water booster pump selection database, wherein the booster pump data includes: booster pump design data, booster pump update data, and booster pump feedback data;

[0053] Step 2: Select the booster pump from the bypass pipe system circulating cooling water booster pump selection database according to the user's selection requirements, and build a booster pump pre-selection set;

[0054] Step 3: Calculate the bypass pipe system circulating cooling water resistance of each bypass pipe system circulating cooling water booster pump in the booster pump pre-selection set, determine the corresponding selection score according to the user selection evaluation standard, perform secondary selection of the booster pump, and determine the final selected bypass pipe system circulating cooling water booster pump;

[0055] Step 4: Visually output and display the performance parameters, performance curves and installation data diagram of the finally selected bypass pipe system circulating cooling water booster pump.

[0056] In this embodiment, the booster pump design data and the booster pump update data are obtained from the booster pump manufacturer or booster pump engineer. The booster pump design data includes: booster pump size data, type data, performance data (flow rate, head, power, efficiency).

[0057] In this embodiment, booster pump feedback data is obtained according to the booster pump user and is used to optimize and update the corresponding bypass pipe system circulating cooling water booster pump.

[0058] In this embodiment, the user selects the model according to the requirement. For example, the user selects a bypass pipe system circulating cooling water booster pump of type a1, size within the range of b1, and performance not lower than c1.

[0059] In this embodiment, selecting a booster pump from the bypass piping system circulating cooling water booster pump selection database according to the user selection requirements means performing a preliminary selection of the bypass piping system circulating cooling water booster pump to determine a bypass piping system circulating cooling water booster pump that meets the user selection requirements. For example, the booster pump is selected once to determine the bypass piping system circulating cooling water booster pump d1, the bypass piping system circulating cooling water booster pump d2, and the bypass piping system circulating cooling water booster pump d3.

[0060] In this embodiment, the booster pump pre-selection set refers to a set constructed according to the first selection result of the booster pump, for example, the bypass pipe system circulating cooling water booster pumps d1, d2 and d3.

[0061] In this embodiment, the user selection evaluation criteria, for example, the user selection focuses on the power of the circulating cooling water booster pump of the bypass pipe system.

[0062] In this embodiment, the selection score is used to quantify the circulating cooling water booster pump of the bypass pipe system, which is convenient for users to select.

[0063] In this embodiment, a secondary selection of the booster pump is performed based on the corresponding selection score determined according to the user's selection evaluation criteria to determine the final selected bypass pipe system circulating cooling water booster pump. For example, from the bypass pipe system circulating cooling water booster pumps d1, d2 and d3, the bypass pipe system circulating cooling water booster pump d1 is determined as the final selected bypass pipe system circulating cooling water booster pump.

[0064] The beneficial effects of the above technical solution are: obtaining the booster pump data of the bypass piping system circulating cooling water booster pump, building and updating the bypass piping system circulating cooling water booster pump selection database; performing a primary selection of the booster pump according to the user's selection requirements, and building a booster pump pre-selection set; calculating the bypass piping system circulating cooling water water resistance, determining the corresponding selection score according to the user's selection evaluation criteria for a secondary selection of the booster pump, and determining the final selected bypass piping system circulating cooling water booster pump; visually outputting and displaying the performance parameters, performance curves and installation data diagrams; and effectively ensuring the accurate selection of the bypass piping system circulating cooling water booster pump.

[0065] Embodiment 2:

[0066] An embodiment of the present invention provides a method for selecting a circulating cooling water booster pump of a bypass pipe system, obtaining booster pump data of a circulating cooling water booster pump of a bypass pipe system, and constructing and updating a selection database of a circulating cooling water booster pump of a bypass pipe system, including:

[0067] Acquire the booster pump design data of the bypass piping system circulating cooling water booster pump according to the booster pump standard parameter data, build a bypass piping system circulating cooling water booster pump selection database and divide the database according to the type, size and performance of the bypass piping system circulating cooling water booster pump;

[0068] Obtain booster pump update data and booster pump feedback data of the bypass piping system circulating cooling water booster pump, and update the bypass piping system circulating cooling water booster pump selection database;

[0069] When the user is selecting a circulating cooling water booster pump for a bypass piping system, the user selection requirements are obtained and analyzed, the corresponding bypass piping system circulating cooling water booster pump selection database is connected and the corresponding selection data is called.

[0070] In this embodiment, the standard parameter data of the booster pump is obtained according to the bypass pipe system circulating cooling water booster pump drawings, manufacturers or booster pump engineers, such as standard size parameter data, standard operating performance parameter data and standard type parameter data.

[0071] In this embodiment, the number of database divisions is determined according to the type, size and performance of the circulating cooling water booster pump of the bypass pipe system.

[0072] In this embodiment, the booster pump data of the same bypass pipe system circulating cooling water booster pump can be stored in multiple bypass pipe system circulating cooling water booster pump databases. For example, the bypass pipe system circulating cooling water booster pump a1 is stored in the b1 type bypass pipe system circulating cooling water booster pump database and the c1 performance bypass pipe system circulating cooling water booster pump database.

[0073] The beneficial effect of the above technical solution is: by acquiring the booster pump data of the bypass pipe system circulating cooling water booster pump, a bypass pipe system circulating cooling water booster pump selection database is constructed and updated, which facilitates subsequent users to make accurate selections and lays the foundation for selection.

[0074] Embodiment 3:

[0075] An embodiment of the present invention provides a method for selecting a circulating cooling water booster pump of a bypass pipe system, obtaining booster pump update data and booster pump feedback data of a circulating cooling water booster pump of a bypass pipe system, and updating a bypass pipe system circulating cooling water booster pump selection database, including:

[0076] According to the preset data update strategy, the updated data of the booster pump manufacturer and the modified data of the booster pump engineer are obtained to determine the booster pump update data of the bypass pipe system circulating cooling water booster pump;

[0077] The booster pump feedback data of the bypass pipe system circulating cooling water booster pump is obtained according to the feedback data of the booster pump users, and the bypass pipe system circulating cooling water booster pump selection database is updated.

[0078] In this embodiment, the preset data update strategy includes a strategy for periodically detecting data to update data and a strategy for immediate data update, which is selected according to the update data. For example, if the data is updated daily, the data is updated according to the strategy for periodically detecting data to update data.

[0079] In this embodiment, the updated data of the booster pump manufacturer and the modified data of the booster pump engineer are checked for data correctness. If the data is detected to be erroneous, the data update is not performed and the erroneous data update is recorded.

[0080] In this embodiment, the feedback data from the booster pump users is used to assist the booster pump manufacturers / boost pump engineers in updating data.

[0081] The beneficial effect of the above technical solution is: by obtaining the booster pump update data and booster pump feedback data of the bypass piping system circulating cooling water booster pump, the bypass piping system circulating cooling water booster pump selection database is updated, thereby ensuring the data validity of the bypass piping system circulating cooling water booster pump.

[0082] Embodiment 4:

[0083] An embodiment of the present invention provides a method for selecting a circulating cooling water booster pump for a bypass pipe system, further comprising:

[0084] When it is detected that there is data update in the bypass pipe system circulating cooling water booster pump selection database, the updated data will be processed according to the standard data format, and the data will be updated after the data standard processing is completed;

[0085] When it is detected that there is user access to the bypass pipe system circulating cooling water booster pump selection database, the user is allowed to input user selection requirements for data screening and processing;

[0086] Automatically monitor data updates. When it detects that there is data update in the circulating cooling water booster pump of the bypass pipe system selected by the user, it reminds the user to update the data.

[0087] In this embodiment, the standard data format refers to the format used to store data in the bypass pipe system circulating cooling water booster pump database. For example, the type data of the bypass pipe system circulating cooling water booster pump is stored in the a1 format.

[0088] In this embodiment, the updated data is processed according to the standard data format to ensure the consistency of the data format and avoid affecting the user's selection operation due to format problems.

[0089] In this embodiment, when it is detected that there is user access to the bypass pipe system circulating cooling water booster pump selection database, the user is allowed to input user selection requirements for data filtering processing. For example, when the user selects a booster pump, filtering options pop up: type filtering option, size filtering option and performance filtering option.

[0090] The beneficial effects of the above technical solution are: through data standard processing, it is convenient for users to perform selection operations; automatically monitor data updates and remind users to update data, which is conducive to ensuring the normal operation of the bypass pipe system circulating cooling water booster pump and subsequent correct selection.

[0091] Embodiment 5:

[0092] The embodiment of the present invention provides a method for selecting a circulating cooling water booster pump of a bypass pipe system, which selects a booster pump from a bypass pipe system circulating cooling water booster pump selection database according to user selection requirements, and constructs a booster pump pre-selection set, including:

[0093] Preset the selection input options for the user when selecting the bypass pipe system circulating cooling water booster pump, and quantitatively determine the user's selection requirements at one time, wherein the selection input options include: bypass pipe system circulating cooling water booster pump type, expected flow, expected head, expected efficiency, expected power, expected performance and bypass pipe system circulating cooling water water resistance;

[0094] When the user completes the selection input options, the installation data diagram and size range options of the bypass piping system circulating cooling water booster pump that meet the selection input options are provided, and the user's selection requirements are determined by secondary quantification;

[0095] Determine the user selection requirement according to the first quantification and the second quantification;

[0096] According to the user selection requirements, a booster pump is selected once from a bypass pipe system circulating cooling water booster pump selection database to construct a booster pump pre-selection set.

[0097] In this embodiment, the one-time quantitative determination of the user's selection requirements refers to the user filling in specific selection input options, for example, the expected flow rate a1 and type b1 of the bypass pipe system circulating cooling water booster pump.

[0098] In this embodiment, a one-time quantitative determination of the user's selection requirements is used to accurately determine the user's selection requirements, and is used when the user's selection requirements are clear.

[0099] In this embodiment, an installation data diagram and size range options of a bypass pipe system circulating cooling water booster pump that meet the selection input options are provided, and secondary quantification is performed to determine the user's selection requirements. For example, if the selection size is not determined when the user's selection requirements are determined in the first quantification, the size range c1 selected by the user is determined in the second quantification.

[0100] In this embodiment, the secondary quantization to determine the user's selection requirement is used to fuzzily determine the user's selection requirement, and is used when the user's selection requirement is fuzzy.

[0101] The beneficial effect of the above technical solution is: by selecting the booster pump once from the bypass pipe system circulating cooling water booster pump selection database according to the user's selection requirements, a booster pump pre-selection set is constructed, thereby improving the user's selection efficiency in selecting the bypass pipe system circulating cooling water booster pump.

[0102] Embodiment 6:

[0103] An embodiment of the present invention provides a method for selecting a circulating cooling water booster pump for a bypass pipe system, further comprising:

[0104] Performing a selection simulation test on the booster pump primary selection according to a preset test strategy, and when it is monitored that the booster pump primary selection efficiency and the booster pump primary selection accuracy rate both meet the test standards, determining that the booster pump primary selection can be performed;

[0105] Otherwise, the selection range is adjusted and optimized according to the booster pump primary selection efficiency and the booster pump primary selection accuracy;

[0106] The preset test strategies include: automatic periodic cycle simulation test strategy and artificial random simulation test strategy.

[0107] In this embodiment, performing a selection simulation test on the booster pump according to a preset test strategy refers to simulating the generation of user selection requirements and simulating the selection, and performing a simulation test on the booster pump selection. For example, the user selection requirement a1 is simulated and generated, and the corresponding model selects the bypass pipe system circulating cooling water booster pump b1, and the booster pump is selected once according to the simulated user selection requirement a1.

[0108] In this embodiment, the booster pump primary selection efficiency is determined according to the booster pump primary selection time. For example, if the simulated booster pump primary selection time t1 is lower than the preset booster pump selection time t2, the simulated booster pump primary selection efficiency meets the test standard.

[0109] The beneficial effect of the above technical solution is: by conducting a selection simulation test on the bypass pipe system circulating cooling water booster pump according to a preset test strategy, the data accuracy of the bypass pipe system circulating cooling water booster pump in the first selection result is ensured.

[0110] Embodiment 7:

[0111] The embodiment of the present invention provides a method for selecting a bypass pipe system circulating cooling water booster pump, which calculates the bypass pipe system circulating cooling water water resistance of each bypass pipe system circulating cooling water booster pump in a booster pump pre-selection set, determines a corresponding selection score according to a user selection evaluation standard, performs secondary selection of the booster pump, and determines a finally selected bypass pipe system circulating cooling water booster pump, including:

[0112] According to the bypass pipe system circulating cooling water structure, the bypass pipe system circulating cooling water resistance is divided into structural water resistance, wherein the structural water resistance includes: pipe water resistance, secondary filter water resistance and condenser water resistance;

[0113] Obtain the normal operating structural water resistance of the circulating cooling water booster pumps of each bypass pipeline system in the booster pump preselection set when they are in normal operation and the full load operating structural water resistance when they are in full load operation;

[0114] The pipes, secondary filter screens and condensers in the bypass pipe system are connected in series, and the bypass pipe system circulating cooling water water resistance of each bypass pipe system circulating cooling water booster pump in the booster pump pre-selection set is calculated according to the hydraulic calculation characteristics of the series pipes;

[0115] ;in, Indicates the bypass piping system circulating cooling water resistance when the bypass piping system circulating cooling water booster pump is in normal operation; Indicates the bypass piping system circulating cooling water resistance when the bypass piping system circulating cooling water booster pump is running at full load; Indicates the bypass pipe impedance; Indicates the normal operating flow rate of the circulating cooling water in the bypass piping system when it is in normal operation; Indicates the secondary filter water resistance when the circulating cooling water in the bypass pipe system is in normal operation; Indicates the condenser water resistance when the circulating cooling water in the bypass piping system is in normal operation; Indicates the resistance coefficient along the bypass pipe system circulating cooling water; Indicates the total length of the bypass piping system; Indicates the average pipe diameter of the bypass pipe system; Indicates the flow rate of cooling water circulating in the bypass piping system; represents the acceleration due to gravity; It indicates the full load flow rate when the circulating cooling water in the bypass piping system is running at full load; Indicates the secondary filter water resistance when the circulating cooling water in the bypass pipe system is running at full load; Indicates the correction factor of the circulating cooling water in the bypass piping system when running at full load; It represents the full load flow rate of circulating cooling water in the i1th section of the bypass piping system; Indicates the pipe diameter of the i1th pipe section in the bypass pipe system; represents the full load water resistance of the circulating cooling water in the i1th pipe section of the bypass pipe system; n1 represents the number of segmented pipes in the bypass pipe system;

[0116] Determine the head of the circulating cooling water in the bypass pipe system according to the water resistance of the circulating cooling water in the bypass pipe system, and when the flow-head of the circulating cooling water booster pump in the bypass pipe system in the booster pump pre-selection set at the expected operating point is within a preset efficiency range, obtain the user selection evaluation standard;

[0117] If there is no user selection evaluation standard, the standard selection evaluation standard is called;

[0118] According to the user selection evaluation criteria / standard selection evaluation criteria, the flow rate, head, power and efficiency are weighted to determine the corresponding selection score for secondary selection of the booster pump, and the final selection of the bypass pipe system circulating cooling water booster pump is determined.

[0119] In this embodiment, the circulating cooling water resistance of the bypass pipe system is divided into structural water resistance according to the circulating cooling water structure of the bypass pipe system, so as to facilitate accurate quantitative analysis of each structural water group and further accurately determine the circulating cooling water resistance of the bypass pipe system.

[0120] In this embodiment, the water resistance of the cooling water circulating in the bypass pipe system is different in different structures.

[0121] In this embodiment, the normal operating structural water resistance of each bypass pipe system circulating cooling water booster pump in the booster pump pre-selection set when in normal operation and the full load operating structural water resistance when in full load operation are obtained to determine the head of the bypass pipe system circulating cooling water booster pump.

[0122] In this embodiment, the expected operating point position refers to the optimal operating parameter position of the bypass piping system circulating cooling water booster pump. For example, when the flow rate q1 and the head h1 of the bypass piping system circulating cooling water booster pump are the highest, the position corresponding to the flow rate q1 and the head h1 is determined to be the expected operating point position.

[0123] In this embodiment, flow rate, head, power and efficiency are weighted according to user selection evaluation criteria / standard selection evaluation criteria, for example, flow weight a1, head weight a2, power weight a3 and efficiency weight a4, and the total weight is 1.

[0124] In this embodiment, the flow rate, head, power and efficiency are weighted according to the user selection evaluation standard / standard selection evaluation standard to determine the corresponding selection score for secondary selection of the booster pump, and the final selected bypass pipe system circulating cooling water booster pump is determined. For example, the booster pump pre-selection includes the selection score c1 of the bypass pipe system circulating cooling water booster pump b1, the selection score c2 of the booster pump b2, and the selection score c3 of the booster pump b3. Among them, the selection score c3 is the highest, and the corresponding booster pump b3 is the final selected bypass pipe system circulating cooling water booster pump.

[0125] The beneficial effect of the above technical solution is: by calculating the bypass pipe system circulating cooling water resistance of each bypass pipe system circulating cooling water booster pump in the booster pump pre-selection set, the corresponding selection score is determined according to the user's selection evaluation criteria to perform secondary selection of the booster pump, thereby effectively ensuring the accurate selection of the bypass pipe system circulating cooling water booster pump.

[0126] Embodiment 8:

[0127] The embodiment of the present invention provides a method for selecting a bypass pipe system circulating cooling water booster pump, which visually outputs and displays the performance parameters, performance curves and installation data diagram of the finally selected bypass pipe system circulating cooling water booster pump, including:

[0128] Obtaining the performance parameters of the bypass pipe system circulating cooling water booster pump that is finally selected, determining the flow-head change curve and the flow-power change curve, performing curve fitting processing on the change curves according to a preset curve processing strategy, and determining the performance curve of the bypass pipe system circulating cooling water booster pump that is finally selected;

[0129] Access the installation data diagram database to determine the final selected installation data diagram of the bypass piping system circulating cooling water booster pump;

[0130] When the user limits the data format, the user data format is obtained, the installation data diagram of the bypass pipe system circulating cooling water booster pump finally selected is called and the data format is converted;

[0131] The performance parameters, the performance curve and the installation data diagram are visually output and displayed.

[0132] In this embodiment, the change curve is subjected to curve fitting processing according to a preset curve processing strategy, for example, the curve fitting processing is subjected to curve fitting processing according to the least square method.

[0133] In this embodiment, the installation data graph database is used to determine the final selected installation data graph of the bypass pipe system circulating cooling water booster pump by combining basic graphs, thereby optimizing the generation efficiency of the installation data graph.

[0134] In this embodiment, the user-defined data format is only used for data format conversion when displaying data to the user, and does not affect the data format in the bypass pipe system circulating cooling water booster pump database. For example, if the user defines the data format a1, the data format of the bypass pipe system circulating cooling water booster pump finally selected will be converted.

[0135] The beneficial effect of the above technical solution is that by visually outputting the performance parameters, performance curves and installation data diagram of the finally selected bypass pipe system circulating cooling water booster pump, it is helpful for users to intuitively understand the finally selected bypass pipe system circulating cooling water booster pump, thereby ensuring accurate selection.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for selecting a circulating cooling water booster pump for a bypass piping system, characterized in that: include: Step 1: Acquire booster pump data of a bypass piping system circulating cooling water booster pump, and construct and update a bypass piping system circulating cooling water booster pump selection database, wherein the booster pump data includes: booster pump design data, booster pump update data, and booster pump feedback data; Step 2: Select the booster pump from the bypass pipe system circulating cooling water booster pump selection database according to the user's selection requirements, and build a booster pump pre-selection set; Step 3: Calculate the bypass pipe system circulating cooling water resistance of each bypass pipe system circulating cooling water booster pump in the booster pump pre-selection set, determine the corresponding selection score according to the user selection evaluation standard, perform secondary selection of the booster pump, and determine the final selected bypass pipe system circulating cooling water booster pump, specifically including: According to the bypass pipe system circulating cooling water structure, the bypass pipe system circulating cooling water resistance is divided into structural water resistance, wherein the structural water resistance includes: pipe water resistance, secondary filter water resistance and condenser water resistance; Obtain the normal operating structural water resistance of the circulating cooling water booster pumps of each bypass pipeline system in the booster pump preselection set when they are in normal operation and the full load operating structural water resistance when they are in full load operation; The pipes, secondary filter screens and condensers in the bypass pipe system are connected in series, and the bypass pipe system circulating cooling water water resistance of each bypass pipe system circulating cooling water booster pump in the booster pump pre-selection set is calculated according to the hydraulic calculation characteristics of the series pipes; Determine the head of the circulating cooling water in the bypass pipe system according to the water resistance of the circulating cooling water in the bypass pipe system, and when the flow-head of the circulating cooling water booster pump in the bypass pipe system in the booster pump pre-selection set at the expected operating point is within a preset efficiency range, obtain the user selection evaluation standard; If there is no user selection evaluation standard, the standard selection evaluation standard is called; According to the user selection evaluation criteria / standard selection evaluation criteria, the flow rate, head, power and efficiency are weighted to determine the corresponding selection score for secondary selection of booster pumps, and the final selection of the bypass pipe system circulating cooling water booster pump is determined; Step 4: Visually output and display the performance parameters, performance curves and installation data diagram of the finally selected bypass pipe system circulating cooling water booster pump.

2. The method for selecting a bypass pipe system circulating cooling water booster pump according to claim 1, characterized in that: Obtain booster pump data for bypass piping system circulating cooling water booster pumps, build and update bypass piping system circulating cooling water booster pump selection database, including: Acquire the booster pump design data of the bypass piping system circulating cooling water booster pump according to the booster pump standard parameter data, build a bypass piping system circulating cooling water booster pump selection database and divide the database according to the type, size and performance of the bypass piping system circulating cooling water booster pump; Obtain booster pump update data and booster pump feedback data of the bypass piping system circulating cooling water booster pump, and update the bypass piping system circulating cooling water booster pump selection database; When the user is selecting a circulating cooling water booster pump for a bypass piping system, the user selection requirements are obtained and analyzed, the corresponding bypass piping system circulating cooling water booster pump selection database is connected and the corresponding selection data is called.

3. The method for selecting a bypass pipe system circulating cooling water booster pump according to claim 2, characterized in that: Obtain the booster pump update data and booster pump feedback data of the bypass piping system circulating cooling water booster pump, and update the bypass piping system circulating cooling water booster pump selection database, including: According to the preset data update strategy, the updated data of the booster pump manufacturer and the modified data of the booster pump engineer are obtained to determine the booster pump update data of the bypass pipe system circulating cooling water booster pump; The booster pump feedback data of the bypass pipe system circulating cooling water booster pump is obtained according to the feedback data of the booster pump users, and the bypass pipe system circulating cooling water booster pump selection database is updated.

4. The method for selecting a bypass pipe system circulating cooling water booster pump according to claim 3, characterized in that: Also includes: When it is detected that there is data update in the bypass pipe system circulating cooling water booster pump selection database, the updated data will be processed according to the standard data format, and the data will be updated after the data standard processing is completed; When it is detected that there is user access to the bypass pipe system circulating cooling water booster pump selection database, the user is allowed to input user selection requirements for data screening and processing; Automatically monitor data updates. When it detects that there is data update in the circulating cooling water booster pump of the bypass pipe system selected by the user, it reminds the user to update the data.

5. The method for selecting a bypass pipe system circulating cooling water booster pump according to claim 1, characterized in that: According to the user's selection requirements, the booster pump is selected from the bypass pipe system circulating cooling water booster pump selection database to build a booster pump pre-selection set, including: Preset the selection input options for the user when selecting the bypass pipe system circulating cooling water booster pump, and quantitatively determine the user's selection requirements at one time, wherein the selection input options include: bypass pipe system circulating cooling water booster pump type, expected flow, expected head, expected efficiency, expected power, expected performance and bypass pipe system circulating cooling water water resistance; When the user completes the selection input options, the installation data diagram and size range options of the bypass piping system circulating cooling water booster pump that meet the selection input options are provided, and the user's selection requirements are determined by secondary quantification; Determine the user selection requirement according to the first quantification and the second quantification; According to the user selection requirements, a booster pump is selected once from a bypass pipe system circulating cooling water booster pump selection database to construct a booster pump pre-selection set.

6. The method for selecting a bypass pipe system circulating cooling water booster pump according to claim 5, characterized in that: Also includes: Performing a selection simulation test on the booster pump primary selection according to a preset test strategy, and when it is monitored that the booster pump primary selection efficiency and the booster pump primary selection accuracy rate both meet the test standards, determining that the booster pump primary selection can be performed; Otherwise, the selection range is adjusted and optimized according to the booster pump primary selection efficiency and the booster pump primary selection accuracy; The preset test strategies include: automatic periodic cycle simulation test strategy and artificial random simulation test strategy.

7. The method for selecting a bypass pipe system circulating cooling water booster pump according to claim 1, characterized in that: The performance parameters, performance curves and installation data diagram of the bypass piping system circulating cooling water booster pump finally selected are visually output and displayed, including: Obtaining the performance parameters of the bypass pipe system circulating cooling water booster pump that is finally selected, determining the flow-head change curve and the flow-power change curve, performing curve fitting processing on the change curves according to a preset curve processing strategy, and determining the performance curve of the bypass pipe system circulating cooling water booster pump that is finally selected; Access the installation data diagram database to determine the final selected installation data diagram of the bypass piping system circulating cooling water booster pump; When the user limits the data format, the user data format is obtained, the installation data diagram of the bypass pipe system circulating cooling water booster pump finally selected is called and the data format is converted; The performance parameters, the performance curve and the installation data diagram are visually output and displayed.

8. The method for selecting a bypass pipe system circulating cooling water booster pump according to claim 1, characterized in that: The bypass piping system circulating cooling water resistance of each bypass piping system circulating cooling water booster pump in the booster pump pre-selection set is calculated based on the hydraulic calculation characteristics of the series pipeline, including: ;in, Indicates the bypass piping system circulating cooling water resistance when the bypass piping system circulating cooling water booster pump is in normal operation; Indicates the bypass piping system circulating cooling water resistance when the bypass piping system circulating cooling water booster pump is running at full load; Indicates the bypass pipe impedance; Indicates the normal operating flow rate of the circulating cooling water in the bypass piping system when it is in normal operation; Indicates the secondary filter water resistance when the circulating cooling water in the bypass pipe system is in normal operation; Indicates the condenser water resistance when the circulating cooling water in the bypass piping system is in normal operation; Indicates the resistance coefficient along the bypass pipe system circulating cooling water; Indicates the total length of the bypass piping system; Indicates the average pipe diameter of the bypass pipe system; Indicates the flow rate of cooling water circulating in the bypass piping system; represents the acceleration due to gravity; It indicates the full load flow rate when the circulating cooling water in the bypass piping system is running at full load; Indicates the secondary filter water resistance when the circulating cooling water in the bypass pipe system is running at full load; Indicates the correction factor of the circulating cooling water in the bypass piping system when running at full load; It represents the full load flow rate of circulating cooling water in the i1th section of the bypass piping system; Indicates the pipe diameter of the i1th pipe section in the bypass pipe system; It represents the full load water resistance of the circulating cooling water in the i1th pipe section in the bypass pipe system; n1 represents the number of segmented pipes in the bypass pipe system.

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