A method, apparatus, and electronic equipment for calculating the pipeline characteristics of a slurry circulation pump.

Abstract

This invention discloses a method for calculating the pipeline characteristics of a slurry circulation pump. The method includes: obtaining the particle size of all particles in the limestone slurry being transported by the slurry circulation pump, as well as the volume percentage and weight percentage concentration of the limestone slurry; determining the slurry type based on the particle size, volume percentage concentration, weight percentage concentration, and a preset threshold, where the slurry type includes homogeneous slurry and typical slurry; calculating the head and flow rate of the slurry circulation pump according to the slurry type; and calculating the pipeline characteristics of the slurry circulation pump using the head and flow rate. This invention classifies slurry types and then comprehensively considers multiple factors based on different slurry types, directly calculating the pipeline characteristics of the slurry circulation pump based on existing, readily available data without on-site measurements. This not only breaks through the limitations of existing technology but also provides strong data support for subsequent energy-saving retrofits.

Description

Technical Field

[0001] This invention relates to the field of thermal power plant desulfurization technology, specifically to a method, apparatus, and electronic equipment for calculating the pipeline characteristics of a slurry circulation pump. Background Technology

[0002] The energy-saving and consumption-reduction effects of desulfurization in thermal power plants are related to environmental issues. The limestone-gypsum wet flue gas desulfurization process has advantages such as readily available absorbent solvents, high desulfurization efficiency, and the ability to recycle desulfurization byproducts, and is widely used in coal-fired power plants. The slurry circulation pump in the desulfurization system has high drive power and a high power consumption rate. Currently, it is necessary to reduce the plant's power consumption rate in the desulfurization system. Reducing power consumption not only improves the economic efficiency of the desulfurization system but also lowers power generation costs, which is of great significance for the long-term development of thermal power plants. As a key power-consuming product in the desulfurization system, the slurry circulation pump's main function is to provide power for the recirculation of limestone slurry in the absorber. Because the medium it transports, limestone slurry, is a non-Newtonian fluid with complex properties, it is necessary to understand the pipeline characteristics of the slurry circulation pump when formulating further energy-saving renovation measures for the slurry circulation pump system. However, due to limitations in current technology, it is not possible to directly measure and calculate the pipeline characteristics of the slurry circulation pump on-site. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a method for calculating the pipeline characteristics of a slurry circulation pump, in order to solve the problem that the pipeline characteristics of a slurry circulation pump cannot be directly measured and calculated on the engineering site.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention provides a method for calculating the pipeline characteristics of a slurry circulation pump, including:

[0006] To obtain the particle size of all particles in the limestone slurry transported by the slurry circulation pump, as well as the volume percentage and weight percentage concentration of the limestone slurry;

[0007] The type of limestone slurry is determined based on the particle size, volume percentage concentration, weight percentage concentration, and a preset threshold. The slurry type includes homogeneous slurry and typical slurry.

[0008] Calculate the head and flow rate of the slurry circulation pump based on the slurry type;

[0009] The pipeline characteristics of the slurry circulation pump are calculated using the head and flow rate.

[0010] Optionally, when the slurry type is a homogeneous slurry, the step of calculating the head and flow rate of the slurry circulation pump based on the slurry type includes:

[0011] Obtain the attribute data of the slurry circulation pump and the first flow rate and first head when the conveying medium is clean water;

[0012] The static head of the slurry circulation pump is calculated based on the attribute data. The static head is the head of the slurry circulation pump when the flow rate is 0.

[0013] Optionally, when the slurry type is homogeneous slurry, the calculation of the pipeline characteristics of the slurry circulation pump using the head and the flow rate includes:

[0014] The first pipeline characteristic between flow rate and head is obtained by calculating the static head, the first head, and the first flow rate.

[0015] Optionally, when the slurry type is a typical slurry, calculating the head and flow rate of the slurry circulation pump based on the slurry type includes:

[0016] The static head of the slurry circulation pump when conveying homogeneous slurry, the pipe diameter of the slurry circulation pump, the first relative density of limestone solids and the second relative density of limestone slurry are obtained.

[0017] The critical settling velocity was calculated based on the pipe diameter, volume percentage concentration, first relative density, and second relative density.

[0018] The second head and second flow rate of the slurry circulation pump at different speeds are calculated based on the static head and the critical settling velocity.

[0019] Optionally, the critical settling velocity calculated based on the pipe diameter, volume percentage concentration, first relative density, and second relative density includes:

[0020] Compare the pipe diameter with the preset pipe diameter value;

[0021] When the pipe diameter is smaller than the preset pipe diameter value, the critical settlement velocity V is calculated using the following formula. L :

[0022]

[0023] When the pipe diameter is larger than the preset pipe diameter value, the critical settlement velocity V is calculated using the following formula. L :

[0024]

[0025] Where D is the pipe diameter; g is the acceleration due to gravity; F L d is a coefficient related to particle size and concentration. 50 The median particle size; C V S is the volume percentage concentration; S is the first relative density; S L This is the second relative density.

[0026] Optionally, calculating the second head and second flow rate of the slurry circulation pump at different speeds based on the static head and the critical settling velocity includes:

[0027] The first pipeline characteristic between flow rate and head is obtained by calculating static head, first head, and first flow rate;

[0028] The second head of the slurry circulation pump at different speeds is calculated based on the characteristics of the first pipeline and the critical settling velocity.

[0029] Based on the preset velocity corresponding value of pipeline head loss, calculate the second flow rate corresponding to the second head.

[0030] Optionally, when the slurry type is a typical slurry, the calculation of the pipeline characteristics of the slurry circulation pump using the head and the flow rate includes:

[0031] The second pipeline characteristics between flow rate and head are calculated based on the second head and second flow rate of the slurry circulation pump at different speeds.

[0032] This invention also provides a device for calculating the characteristics of a slurry circulation pump pipeline, comprising:

[0033] The acquisition module is used to acquire the particle size of all particles in the limestone slurry transported by the slurry circulation pump, as well as the volume percentage concentration and weight percentage concentration of the limestone slurry.

[0034] The judgment module is used to determine the slurry type of the limestone slurry based on the particle size, volume percentage concentration, weight percentage concentration and preset threshold, wherein the slurry type includes homogeneous slurry and typical slurry;

[0035] A calculation module is used to calculate the head and flow rate of the slurry circulation pump based on the slurry type;

[0036] The characteristic module is used to calculate the pipeline characteristics of the slurry circulation pump using the head and the flow rate.

[0037] This invention also provides an electronic device, comprising:

[0038] The system includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes these computer instructions to perform the pipeline characteristic calculation method for the slurry circulation pump provided in this embodiment of the invention.

[0039] This invention also provides a computer-readable storage medium storing computer instructions for causing a computer to execute the pipeline characteristic calculation method for a slurry circulation pump provided in this invention.

[0040] The technical solution of this invention has the following advantages:

[0041] This invention provides a method for calculating the pipeline characteristics of a slurry circulation pump. It involves obtaining the particle size of all particles in the limestone slurry being pumped, as well as the volume percentage and weight percentage concentration of the limestone slurry. Based on the particle size, volume percentage concentration, weight percentage concentration, and a preset threshold, the slurry type is determined, including homogeneous slurry and typical slurry. The pump head and flow rate are calculated based on the slurry type. The pipeline characteristics of the slurry circulation pump are then calculated using the head and flow rate. This invention classifies slurry types and then comprehensively considers multiple factors based on different slurry types. It directly calculates the pipeline characteristics of the slurry circulation pump based on existing, readily available data without on-site measurements. This not only breaks through the limitations of existing technology but also provides strong data support for subsequent energy-saving retrofits. Attached Figure Description

[0042] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0043] Figure 1 This is a flowchart of the pipeline characteristic calculation method for the slurry circulation pump in an embodiment of the present invention;

[0044] Figure 2 This is a flowchart illustrating the calculation of head and flow rate for homogeneous slurry according to an embodiment of the present invention;

[0045] Figure 3 This is a flowchart illustrating the calculation of head and flow rate for a typical slurry according to an embodiment of the present invention;

[0046] Figure 4 This is a flowchart illustrating the critical settlement velocity calculated according to an embodiment of the present invention;

[0047] Figure 5 This is a flowchart illustrating the calculation of the second head and second flow rate at different speeds according to an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of the slurry circulation pump pipeline characteristic calculation device in an embodiment of the present invention;

[0049] Figure 7 This is a schematic diagram of the structure of an electronic device in an embodiment of the present invention. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] According to an embodiment of the present invention, a method for calculating the pipeline characteristics of a slurry circulation pump is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0052] This embodiment provides a method for calculating the pipeline characteristics of a slurry circulation pump, which can be used in the aforementioned terminal equipment, such as a computer, etc. Figure 1 As shown, the calculation method for the pipeline characteristics of this slurry circulation pump includes the following steps:

[0053] Step S1: Obtain the particle size of all particles in the limestone slurry transported by the slurry circulation pump, as well as the volume percentage concentration and weight percentage concentration of the limestone slurry. Specifically, the volume percentage concentration C... v This refers to the percentage of the volume of solid flowing through per unit time to the volume of the slurry:

[0054]

[0055] In the formula, Q s Q is the volumetric flow rate of limestone solids; m This represents the volumetric flow rate of the limestone slurry.

[0056] The relative density S of limestone solid is the ratio of the density of limestone solid to the density of pure water.

[0057]

[0058] The relative density S of limestone slurry m This refers to the ratio of the density of limestone slurry to the density of water:

[0059]

[0060] In the formula, ρ sρ is the density of the limestone solid. m The density of limestone slurry is the mass per unit volume.

[0061] weight percentage concentration C w This refers to the percentage of the weight of solids flowing through per unit time to the weight of the slurry:

[0062]

[0063] Step S2: Determine the limestone slurry type based on particle size, volume percentage concentration, weight percentage concentration, and a preset threshold. Slurry types include homogeneous slurry and typical slurry. Specifically, to determine the type of limestone slurry, if the particle size of all particles in the limestone slurry is less than 100 μm, the weight percentage concentration C... w ≤30%, volume percentage concentration C v ≤15%, the limestone slurry is a homogeneous slurry; if the median particle size d of the slurry is... 50 Between 100 μm and 300 μm, the weight percentage concentration C w ≤40%, volume percentage concentration C v ≤20%, this limestone slurry is a typical slurry.

[0064] Step S3: Calculate the head and flow rate of the slurry circulation pump based on the slurry type. Specifically, by calculating the head and flow rate for different slurry types separately, the differences in the transportation process of different types of slurry are fully considered, providing more accurate and powerful data support for subsequent calculations of pipeline characteristics.

[0065] Step S4: Calculate the pipeline characteristics of the slurry circulation pump using head and flow rate. Specifically, calculate the pipeline characteristics for both types of slurry separately, based on available data without on-site measurements.

[0066] Through the above steps S1 to S4, the pipeline characteristic calculation method of the slurry circulation pump provided by the embodiment of the present invention classifies the slurry type and then comprehensively considers multiple factors according to different slurry types. Based on the existing data, the pipeline characteristics of the slurry circulation pump can be directly calculated without on-site measurement. This not only breaks the limitations of the existing technical conditions, but also provides strong data support for subsequent energy-saving renovations.

[0067] Specifically, in one embodiment, when the slurry type is a homogeneous slurry, step S3 above is as follows: Figure 2 As shown, the specific steps include the following:

[0068] Step S311: Obtain the attribute data of the slurry circulation pump and the first flow rate and first head when the conveying medium is clean water. Specifically, the first flow rate Q1 and first head H1 of the slurry circulation pump when the conveying medium is clean water can be obtained directly through measurement.

[0069] Step S312: Calculate the static head of the slurry circulation pump based on attribute data. The static head is the head of the slurry circulation pump when the flow rate is 0. Specifically, calculating the static head of the slurry circulation pump based on attribute data includes:

[0070] Extract the static pressure data and liquid height data of the container liquid level from the attribute data. The static pressure data includes the static pressure of the liquid level sucked into the container by the slurry circulation pump and the static pressure of the liquid level output from the container by the slurry circulation pump. The liquid height data is the total geometric height of the liquid being lifted.

[0071] The static head H is calculated using the following formula. st :

[0072]

[0073] In the formula, P A The static pressure of the liquid surface in the slurry circulation pump suction container; P B The static pressure of the liquid level in the slurry circulation pump output container; H t ρ is the total geometric height to which the liquid is lifted; ρ is the density of pure water; g is the acceleration due to gravity.

[0074] Specifically, in one embodiment, when the slurry type is a homogeneous slurry, step S4 above specifically includes the following steps:

[0075] The first pipeline characteristic relationship between flow rate and head is calculated using the static head, the first head, and the first flow rate. Specifically, the point (0, H) is... st Substituting (Q1, H1) into the following formula, the pipeline characteristics of the slurry circulation pump can be obtained:

[0076]

[0077] In the formula, Q is the flow rate of the slurry circulation pump; H c The head of the device is the total head required by the pipeline system to transport liquid; Ψ is a constant.

[0078] Specifically, when the slurry is homogeneous, the pipeline characteristic curve of the slurry circulation pump is obtained by measuring the pipeline parameters when the conveying medium is clean water, rather than directly measuring the relevant parameters of the pipeline when conveying limestone slurry. This effectively solves the problem that existing technologies cannot directly measure and calculate on-site due to limited technical conditions.

[0079] Specifically, in one embodiment, when the slurry type is a typical slurry, step S3 above is as follows: Figure 3As shown, the specific steps include the following:

[0080] Step S321: Obtain the static head of the slurry circulation pump when conveying homogeneous slurry, the pipe diameter of the slurry circulation pump, the first relative density of limestone solids, and the second relative density of limestone slurry.

[0081] Step S322: Calculate the critical settling velocity based on pipe diameter, volume percentage concentration, first relative density, and second relative density. Specifically, as solid particles flow in the pipe, their distribution becomes increasingly uneven as the average flow velocity of the slurry decreases. When the flow velocity decreases to a certain value, a fixed sliding surface appears at the bottom of the pipe. The velocity at which the particles begin to form a bed is called the sedimentation velocity. If the flow velocity is lower than the sedimentation velocity, a solid particle bed will form inside the pipe, increasing frictional losses and causing pulsation, potentially even leading to pipe blockage. To ensure normal flow of the slurry in the pipe, the flow velocity must exceed a specific minimum value, which is the critical settling velocity V. L .

[0082] Step S323: Calculate the second head and second flow rate of the slurry circulation pump at different velocities based on the static head and critical settling velocity. Specifically, the head and flow rate are calculated by calculating the critical settling velocity and considering the characteristics of pipeline head loss when transporting slurry. This fully considers the influence of pipe diameter and particles, providing reliable data support for calculating the pipeline characteristics of the slurry circulation pump when transporting typical slurries.

[0083] Specifically, in one embodiment, step S322 described above is as follows: Figure 4 As shown, the specific steps include the following:

[0084] Step S3221: Compare the pipe diameter with the preset pipe diameter value.

[0085] Step S3222: When the pipe diameter is smaller than the preset pipe diameter value, calculate the critical settlement velocity V using the following formula. L :

[0086] Specifically, when the pipe diameter D ≤ 200 mm, the critical settlement velocity is calculated using this formula, where S L The relative density of the carrier is given. The carrier consists of a liquid and solid particles with a diameter of less than 100 μm and can be obtained directly.

[0087] Step S3223: When the pipe diameter is greater than the preset pipe diameter value, calculate the critical settlement velocity V using the following formula. L :

[0088] Specifically, when the pipe diameter D > 200 mm, the critical settlement velocity is calculated using this formula, where d 50The median particle size refers to the particle size of the 50% of particles by weight during sample sieving, ensuring that particles larger than this size and particles smaller than this size have an equal weight share; D is the pipe diameter; g is the acceleration due to gravity; F L C is a coefficient related to particle size and concentration. V S is the volume percentage concentration; S is the first relative density; S L This is the second relative density.

[0089] Specifically, since the critical settling velocity is affected by the friction of solid particles in the slurry and the siltation velocity, different pipe diameters will have a significant impact on the critical settling velocity. By distinguishing between different pipe diameters and performing different calculations, the accuracy of the calculated critical settling velocity can be effectively guaranteed, ensuring that the calculated critical settling velocity can guarantee the normal flow of the slurry in the pipe.

[0090] Specifically, in one embodiment, step S323 described above is as follows: Figure 5 As shown, the specific steps include the following:

[0091] Step S3231: Calculate the first pipeline characteristics between flow rate and head using static head, first head, and first flow rate.

[0092] Step S3232: Calculate the second head of the slurry circulation pump at different speeds based on the characteristics of the first pipeline and the critical settling velocity.

[0093] Step S3233: Calculate the second flow rate corresponding to the second head based on the preset velocity value of pipeline head loss.

[0094] Specifically, the pipeline characteristics when using a slurry circulation pump with clean water as the medium. The flow velocity v = V can be calculated. L The device head H at that time L1 Calculate v = 1.3V L The device head H at that time L2 ;

[0095] According to the formula Calculate v = 0.7V L Traffic Q 0.7VL v = 1.3V L Traffic Q 1.3VL , where A is the cross-sectional area of ​​the pipeline.

[0096] Specifically, the head loss in pipelines for typical slurries has the following characteristics: Under the same pipeline conditions, when the slurry velocity is 0.7 times its critical velocity (v = 0.7V), the head loss increases significantly. L When the head loss of the slurry is equal to the head loss of the clear water at the critical settling velocity of the slurry (v = V), the head loss of the slurry is equal to the head loss of the clear water at the critical settling velocity of the slurry (v = V). LThe head loss is the same during flow; when the flow velocity of the slurry is 1.3 times its critical settling velocity (v = 1.3V), the head loss is the same. L When the slurry flows at the same velocity, the head loss is the same as that of clean water. Based on this characteristic, the second head and second flow rate of the slurry circulation pump at different velocities can be calculated, providing data support for calculating the pipeline characteristics of the slurry circulation pump when transporting typical slurries.

[0097] Specifically, in one embodiment, when the slurry type is a typical slurry, step S4 above specifically includes the following steps:

[0098] The second pipeline characteristics between flow rate and head are calculated based on the second head and second flow rate of the slurry circulation pump at different speeds. Specifically, the point (Q) 0.7VL H L1 ), (Q 1.3VL H L2 Substitute into the formula The pipeline characteristics of the slurry circulation pump when transporting typical slurries are determined, where Ψ is a constant for a specific pipeline, and its value varies depending on the pipeline model. When the slurry is a typical slurry, the pipeline characteristics of the slurry circulation pump are obtained by measuring the pipeline characteristics when the transport medium is clean water and combining this with the characteristics of the pipeline head loss when transporting slurry, rather than directly measuring the relevant parameters of the pipeline when transporting limestone slurry. This effectively solves the problem in existing technologies where direct on-site measurement and calculation are not possible due to limited technical conditions.

[0099] This embodiment also provides a slurry circulation pump pipeline characteristic calculation device, which is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0100] This embodiment provides a device for calculating the characteristics of a slurry circulation pump pipeline, such as... Figure 6 As shown, it includes:

[0101] The acquisition module 101 is used to acquire the particle size of all particles in the limestone slurry transported by the slurry circulation pump and the volume percentage concentration and weight percentage concentration of the limestone slurry. For details, please refer to the relevant description of step S1 in the above method embodiment, which will not be repeated here.

[0102] The judgment module 102 is used to determine the slurry type of limestone slurry based on particle size, volume percentage concentration, weight percentage concentration and preset threshold. The slurry type includes homogeneous slurry and typical slurry. For details, please refer to the relevant description of step S2 in the above method embodiment, which will not be repeated here.

[0103] The calculation module 103 is used to calculate the head and flow rate of the slurry circulation pump according to the slurry type. For details, please refer to the relevant description of step S3 in the above method embodiment, which will not be repeated here.

[0104] The characteristic module 104 is used to calculate the pipeline characteristics of the slurry circulation pump through head and flow rate. For details, please refer to the relevant description of step S4 in the above method embodiment, which will not be repeated here.

[0105] In this embodiment, the slurry circulation pump pipeline characteristic calculation device is presented in the form of a functional unit. Here, a unit refers to an ASIC circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0106] Further functional descriptions of the above modules are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0107] According to embodiments of the present invention, an electronic device is also provided, such as... Figure 7 As shown, the electronic device may include a processor 701 and a memory 702, wherein the processor 701 and the memory 702 may be connected via a bus or other means. Figure 7 Taking the example of a connection between China and Israel via a bus.

[0108] Processor 701 can be a central processing unit (CPU). Processor 701 can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or combinations of the above types of chips.

[0109] The memory 702, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the methods in the method embodiments of the present invention. The processor 701 executes various functional applications and data processing of the processor by running the non-transitory software programs, instructions, and modules stored in the memory 702, thereby implementing the methods in the above method embodiments.

[0110] The memory 702 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created by the processor 701, etc. Furthermore, the memory 702 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 702 may optionally include memory remotely located relative to the processor 701, and these remote memories may be connected to the processor 701 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0111] One or more modules are stored in memory 702 and, when executed by processor 701, perform the methods described in the above method embodiments.

[0112] The specific details of the aforementioned electronic device can be understood by referring to the relevant descriptions and effects in the above method embodiments, and will not be repeated here.

[0113] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk drive (HDD), or solid-state drive (SSD), etc.; the storage medium can also include combinations of the above types of memory.

[0114] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for calculating the pipeline characteristics of a slurry circulation pump, characterized in that, include: To obtain the particle size of all particles in the limestone slurry transported by the slurry circulation pump, as well as the volume percentage and weight percentage concentration of the limestone slurry; The type of limestone slurry is determined based on the particle size, volume percentage concentration, weight percentage concentration, and a preset threshold. The slurry type includes homogeneous slurry and typical slurry. Calculate the head and flow rate of the slurry circulation pump based on the slurry type; The pipeline characteristics of the slurry circulation pump are calculated using the head and the flow rate. When the slurry type is a typical slurry, the calculation of the head and flow rate of the slurry circulation pump based on the slurry type includes: obtaining the static head of the slurry circulation pump when conveying homogeneous slurry, the pipe diameter of the slurry circulation pump, the first relative density of limestone solids, and the second relative density of limestone slurry; calculating the critical settling velocity based on the pipe diameter, volume percentage concentration, first relative density, and second relative density; and calculating the second head and second flow rate of the slurry circulation pump at different velocities based on the static head and the critical settling velocity. The critical settling velocity calculated based on the pipe diameter, volume percentage concentration, first relative density, and second relative density includes: comparing the pipe diameter with a preset pipe diameter value; when the pipe diameter is smaller than the preset pipe diameter value, calculating the critical settling velocity using the following formula. : ； When the pipe diameter is larger than the preset pipe diameter value, the critical settlement velocity is calculated using the following formula. : ； in, Pipe diameter; It is the acceleration due to gravity; A coefficient related to particle size and concentration; The median particle size; It is a volume percentage concentration; The first relative density; The second relative density; The step of calculating the second head and second flow rate of the slurry circulation pump at different speeds based on the static head and the critical settling velocity includes: calculating a first pipeline characteristic between the flow rate and the head using the static head, the first head, and the first flow rate; calculating the second head of the slurry circulation pump at different speeds based on the first pipeline characteristic and the critical settling velocity; and calculating the second flow rate corresponding to the second head based on a preset velocity-corresponding value for pipeline head loss. When the slurry type is a typical slurry, the calculation of the pipeline characteristics of the slurry circulation pump by the head and the flow rate includes: calculating the second pipeline characteristics between the flow rate and the head based on the second head and the second flow rate of the slurry circulation pump at different speeds.

2. The method for calculating the pipeline characteristics of a slurry circulation pump according to claim 1, characterized in that, When the slurry type is homogeneous slurry, the calculation of the head and flow rate of the slurry circulation pump based on the slurry type includes: Obtain the attribute data of the slurry circulation pump and the first flow rate and first head when the conveying medium is clean water; The static head of the slurry circulation pump is calculated based on the attribute data. The static head is the head of the slurry circulation pump when the flow rate is 0.

3. The method for calculating the pipeline characteristics of a slurry circulation pump according to claim 2, characterized in that, When the slurry type is homogeneous slurry, the calculation of the pipeline characteristics of the slurry circulation pump using the head and the flow rate includes: The first pipeline characteristic between flow rate and head is obtained by calculating the static head, the first head, and the first flow rate.

4. A device for calculating the characteristics of a slurry circulation pump pipeline, characterized in that, include: The acquisition module is used to acquire the particle size of all particles in the limestone slurry conveyed by the slurry circulation pump, as well as the volume percentage concentration and weight percentage concentration of the limestone slurry. The judgment module is used to determine the slurry type of the limestone slurry based on the particle size, volume percentage concentration, weight percentage concentration and preset threshold, wherein the slurry type includes homogeneous slurry and typical slurry; The calculation module is used to calculate the head and flow rate of the slurry circulation pump based on the slurry type; The characteristic module is used to calculate the pipeline characteristics of the slurry circulation pump using the head and the flow rate; When the slurry type is a typical slurry, the calculation module is specifically used to: obtain the static head of the slurry circulation pump when conveying homogeneous slurry, the pipe diameter of the slurry circulation pump, the first relative density of limestone solids and the second relative density of limestone slurry; calculate the critical settling velocity based on the pipe diameter, volume percentage concentration, first relative density and second relative density; and calculate the second head and second flow rate of the slurry circulation pump at different velocities according to the static head and the critical settling velocity. The critical settling velocity calculated based on the pipe diameter, volume percentage concentration, first relative density, and second relative density includes: comparing the pipe diameter with a preset pipe diameter value; when the pipe diameter is smaller than the preset pipe diameter value, calculating the critical settling velocity using the following formula. : ； When the pipe diameter is larger than the preset pipe diameter value, the critical settlement velocity is calculated using the following formula. : ； in, Pipe diameter; It is the acceleration due to gravity; A coefficient related to particle size and concentration; The median particle size; It is a volume percentage concentration; The first relative density; The second relative density; The step of calculating the second head and second flow rate of the slurry circulation pump at different speeds based on the static head and the critical settling velocity includes: calculating a first pipeline characteristic between the flow rate and the head using the static head, the first head, and the first flow rate; calculating the second head of the slurry circulation pump at different speeds based on the first pipeline characteristic and the critical settling velocity; and calculating the second flow rate corresponding to the second head based on a preset velocity-corresponding value for pipeline head loss. When the slurry type is a typical slurry, the calculation of the pipeline characteristics of the slurry circulation pump by the head and the flow rate includes: calculating the second pipeline characteristics between the flow rate and the head based on the second head and the second flow rate of the slurry circulation pump at different speeds.

5. An electronic device, characterized in that, include: The system includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes the computer instructions to perform the pipeline characteristic calculation method for the slurry circulation pump according to any one of claims 1-3.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing a computer to execute the pipeline characteristic calculation method for the slurry circulation pump according to any one of claims 1-3.

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