Hydraulic design method and device for feeding pump volute of ore pulp preheater and electronic equipment

Abstract

The invention provides a hydraulic design method and device for a feeding pump volute of an ore pulp preheater and electronic equipment, and belongs to the technical field of fluid machinery. The method comprises the steps that the diameter of a base circle is determined based on the diameter of an impeller and the specific speed of a pump; the volute width is determined based on the impeller runner width, the impeller cover plate thickness and the impeller back blade height; the heights of different sections are determined based on the area and flow of the VIII section of the feeding pump, the average flow speed when a medium passes through the VIII section, the top arc radius of the volute section and the volute width; based on the VIII section area and the pump specific speed, the throat section area of the volute is determined; based on the throat section area and the volute section top arc radius, the volute baffle tongue section throat width is determined; and determining the design result of the volute hydraulic power based on the base circle diameter, the heights of different sections and the throat width of the section of the volute baffle tongue. The purpose of designing the parameters of the volute of the feeding pump of the ore pulp preheater can be achieved, and therefore the one-time casting qualification rate of the volute is increased.

Description

Technical Field

[0001] The present application relates to the technical field of fluid machinery, and in particular to a design method, device and electronic equipment for hydraulics of a volute of a slurry preheater feed pump. Background Art

[0002] Slurry preheater is a device used to store and heat high-pressure slurry. The slurry is mostly a three-phase mixed slurry of solid, liquid and gas. The solid content is generally 35% to 40%, and the rest is steam and acid solution. The pH is between 2 and 4. The preheater is mostly a sealed cylindrical tank with pressure inside. As the medium temperature rises from 105℃ to 165℃, the pressure inside the tank rises from 0.8MPa to 2.2MPa.

[0003] The function of the slurry preheater feed pump is to transport the slurry. When the slurry is sucked into the pump cavity and transported in the volute, the solid particles cause serious wear on the volute. The volute material of the slurry preheater feed pump is generally made of high-hardness wear-resistant material. This type of material is very brittle and has relatively poor casting performance. The more complex the structure, the lower the yield rate.

[0004] Since the volute structure of the slurry preheater feed pump is complicated, the existing technical solutions do not disclose how to design the volute parameters of the slurry preheater feed pump, resulting in a low one-time casting pass rate of the volute. Summary of the invention

[0005] In view of this, it is necessary to provide a method, device and electronic equipment for designing the hydraulics of the volute of a slurry preheater feed pump, so as to achieve the purpose of designing the volute parameters of the slurry preheater feed pump, thereby improving the one-time casting pass rate of the volute.

[0006] In order to solve the above problems, the present application provides a method for designing the hydraulics of a volute of a slurry preheater feed pump, comprising:

[0007] Determine the base circle diameter based on the impeller diameter and the pump specific speed;

[0008] Determine the volute width based on the impeller flow channel width, impeller cover thickness and impeller back blade height;

[0009] Determine the heights of different sections based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section, and the width of the volute;

[0010] Determine the throat cross-sectional area of ​​the volute based on the cross-sectional area of ​​Section VIII and the pump specific speed;

[0011] Determine the throat width of the volute tongue section based on the throat cross-sectional area and the top arc radius of the volute section;

[0012] The design result of the volute hydraulics is determined based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

[0013] In a possible implementation, the method for designing the hydraulics of the volute of the slurry preheater feed pump further includes:

[0014] Obtain the flow rate, head and speed of the feed pump;

[0015] Determine the pump specific speed and the volute outlet equivalent diameter based on the flow rate, the head and the speed;

[0016] Based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section, the volute hydraulic design results are determined, including:

[0017] The design result of the volute hydraulics is determined based on the volute outlet equivalent diameter, the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

[0018] In a possible implementation, the method for designing the hydraulics of the volute of the slurry preheater feed pump further includes:

[0019] Based on the flow rate and the average flow velocity of the medium when passing through section VIII, the area of ​​section VIII is determined.

[0020] In a possible implementation, the heights of different sections are determined based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section, and the width of the volute, including:

[0021] Determine the height of section VIII based on the area of ​​section VIII, the radius of the top arc of the volute section, and the width of the volute;

[0022] Determine the height of the first section based on the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section and the volute width;

[0023] Based on the height of the VIII section and the height of the I section, the heights of different sections are determined.

[0024] In a possible implementation, the calculation formula for the height of the first section is as follows:

[0025]

[0026] Among them, H1 is the height of the first section, V3 is the average flow velocity of the medium when it passes through the VIII section, r is the radius of the top arc of the volute section, B3 is the volute width, and Q is the flow rate of the feed pump.

[0027] In a possible implementation, the calculation formulas for the heights of different sections are as follows:

[0028]

[0029] Among them, H n is the nth section height, 2≤n≤7, H1 is the 1st section height, and H8 is the 8th section height.

[0030] In a possible implementation, the design result of the volute hydraulics is determined based on the base circle diameter, the heights of the different sections, and the throat width of the volute tongue section, including:

[0031] Based on the preset relationship between the tongue placement angle and the specific speed, the throat width of the volute tongue section, and the uncast fillet, the height value of the tongue position is determined;

[0032] The design result of the volute hydraulics is determined based on the height value of the baffle tongue position, the base circle diameter, the heights of the different sections and the throat width of the volute baffle tongue section.

[0033] On the other hand, the present application also provides a design device for the hydraulics of the volute of a slurry preheater feed pump, comprising:

[0034] A diameter calculation module for determining the base circle diameter based on the impeller diameter and the pump specific speed;

[0035] A first width calculation module, for determining the volute width based on the impeller flow channel width, the impeller cover plate thickness and the impeller back blade height;

[0036] A height calculation module, for determining the heights of different sections based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section and the width of the volute;

[0037] an area calculation module, for determining the throat cross-sectional area of ​​the volute based on the VIII cross-sectional area and the pump specific speed;

[0038] A second width calculation module is used to determine the throat width of the volute tongue section based on the throat cross-sectional area and the top arc radius of the volute section;

[0039] The design result determination module is used to determine the design result of the volute hydraulics based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

[0040] On the other hand, the present application also provides an electronic device, including a memory and a processor, wherein:

[0041] The memory is used to store programs;

[0042] The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the method for designing hydraulics of a volute of a slurry preheater feed pump as described in any one of the above.

[0043] On the other hand, the present application also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for designing hydraulics of a volute of a slurry preheater feed pump as described in any one of the above items.

[0044] The beneficial effects of adopting the above implementation method are as follows: the design method, device and electronic equipment for the hydraulics of the volute of the slurry preheater feed pump provided by the present application determine the base circle diameter through the impeller diameter and the pump specific speed; determine the volute width based on the impeller flow channel width, the impeller cover plate thickness and the impeller back blade height; determine the heights of different sections based on the VIII section area, flow rate, average flow velocity of the medium when passing through the VIII section of the feed pump, and the top arc radius of the volute section and the volute width; determine the throat cross-sectional area of ​​the volute based on the VIII section area and the pump specific speed; determine the throat width of the volute tongue section based on the throat cross-sectional area and the top arc radius of the volute section; determine the design result of the volute hydraulics based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section. This application only needs to obtain parameters such as the impeller diameter and pump specific speed, the impeller flow channel width, the impeller cover plate thickness and the impeller back blade height, the VIII section area, flow rate, the average flow velocity of the medium when passing through the VIII section, and the top arc radius of the volute section, so as to realize the design of the volute parameters of the slurry preheater feed pump, thereby improving the one-time casting qualification rate of the volute. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 A flow chart of an embodiment of a method for designing hydraulics of a volute of a slurry preheater feed pump provided in the present application;

[0047] Figure 2 Schematic diagrams of multiple different cross-sections provided for this application;

[0048] Figure 3 A schematic diagram of the volute throat provided for this application;

[0049] Figure 4 A cross-sectional view of the volute chamber provided for this application;

[0050] Figure 5 A principle block diagram of an embodiment of a design device for hydraulics of a volute of a slurry preheater feed pump provided in the present application;

[0051] Figure 6 A schematic diagram of the structure of an embodiment of an electronic device provided in this application. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0053] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more.

[0054] In the embodiments of the present application, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not explicitly listed or inherent to these processes, methods, products or equipment.

[0055] The naming or numbering of the steps in the embodiments of the present application does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The named or numbered process steps can change the execution order according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0056] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] The present application provides a method, device and electronic equipment for designing hydraulics of a volute of a feed pump for a slurry preheater, which are described below respectively.

[0058] like Figure 1 As shown, the present application provides a method for designing hydraulics of a volute of a slurry preheater feed pump, comprising:

[0059] S101, determining a base circle diameter based on an impeller diameter and a pump specific speed;

[0060] S102, determining the volute width based on the impeller flow channel width, the impeller cover plate thickness and the impeller back blade height;

[0061] S103, determining the heights of different sections of the volute based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section, and the width of the volute;

[0062] S104, determining the throat cross-sectional area of ​​the volute based on the cross-sectional area VIII and the pump specific speed;

[0063] S105, determining the throat width of the volute tongue section based on the throat cross-sectional area and the top arc radius of the volute section;

[0064] S106. Determine the design result of the volute hydraulics based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

[0065] It can be understood that the main purpose of this application is to provide a hydraulic design method for the volute of a centrifugal slurry preheater feed pump, which aims to optimize the volute model size, improve the one-time casting pass rate of the volute, improve the efficiency of the slurry pump, and realize the rapid hydraulic design of the volute of the slurry preheater feed pump.

[0066] The impeller diameter is the diameter of the impeller of the slurry preheater feed pump; the pump specific speed can be calculated based on the flow rate, head and speed of the feed pump. The volute refers to the volute of the slurry preheater feed pump.

[0067] In some embodiments, the method for designing the hydraulics of the volute of a slurry preheater feed pump further includes:

[0068] Obtain the flow rate, head and speed of the feed pump;

[0069] Determine the pump specific speed and the volute outlet equivalent diameter based on the flow rate, the head and the speed;

[0070] Based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section, the volute hydraulic design results are determined, including:

[0071] The design result of the volute hydraulics is determined based on the volute outlet equivalent diameter, the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

[0072] In some embodiments, the method for designing the hydraulics of the volute of a slurry preheater feed pump further includes:

[0073] Based on the flow rate and the average flow velocity of the medium when passing through section VIII, the area of ​​section VIII is determined.

[0074] In some embodiments, the heights of different sections are determined based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the top arc radius of the volute section, and the volute width, including:

[0075] Determine the height of section VIII based on the area of ​​section VIII, the radius of the top arc of the volute section, and the width of the volute;

[0076] Determine the height of the first section based on the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section and the volute width;

[0077] Based on the height of the VIII section and the height of the I section, the heights of different sections are determined.

[0078] In some embodiments, the calculation formula for the first section height is as follows:

[0079]

[0080] Among them, H1 is the height of the first section, V3 is the average flow velocity of the medium when it passes through the VIII section, r is the radius of the top arc of the volute section, B3 is the volute width, and Q is the flow rate of the feed pump.

[0081] In some embodiments, the height of different sections is calculated as follows:

[0082]

[0083] Among them, H n is the nth section height, 2≤n≤7, H1 is the 1st section height, and H8 is the 8th section height.

[0084] In some embodiments, based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section, the design result of the volute hydraulics is determined, including:

[0085] Based on the preset relationship between the tongue placement angle and the specific speed, the throat width of the volute tongue section, and the uncast fillet, determine the height value (L1) of the tongue position;

[0086] The design result of the volute hydraulics is determined based on the height value of the baffle tongue position, the base circle diameter, the heights of the different sections and the throat width of the volute baffle tongue section.

[0087] It can be understood that the height value of the tongue position is the height difference between section VIII and section IX.

[0088] In a specific embodiment, in combination Figure 3 , Figure 4 and Figure 5 , the design method of the volute hydraulics of the slurry preheater feed pump includes:

[0089] Calculate the pump specific speed n according to the flow rate, head and speed of the slurry pump (i.e. the slurry preheater feed pump) s ; The formula is:

[0090]

[0091] Q: Flow rate (m 3 / h);

[0092] H: flow rate (m);

[0093] n: speed (r / min);

[0094] Calculate the equivalent diameter D4 of the volute outlet:

[0095]

[0096] K d Coefficient (value range: 3.5~4.5);

[0097] Calculate the base circle diameter D3 according to the impeller diameter:

[0098]

[0099] D2: impeller diameter (mm);

[0100] Calculate the volute width B3:

[0101] B3=B2+2δ+2τ+C

[0102] C is a constant, ranging from 6 to 10;

[0103] B2: Impeller flow channel width (mm);

[0104] δ: Impeller cover thickness (mm);

[0105] τ: impeller back blade height (mm);

[0106] The velocity coefficient method is used to calculate the area of ​​section VIII F8:

[0107]

[0108] in:

[0109] K3: coefficient (can be determined by looking up the table);

[0110] g Weight acceleration 9.81 (m / s 2 );

[0111] h: pump head (m);

[0112] V3: Average flow velocity of the medium passing through section VIII (m / s);

[0113] Calculate the heights H1 to H8 of sections I to VIII:

[0114]

[0115] in:

[0116] r is the radius of the top arc of each section of the volute, in mm, and is generally taken as twice the thickness of the impeller cover plate δ;

[0117]

[0118] Where: n = 2 to 7, indicating the 2nd to 7th sections;

[0119] Calculate the throat width G of the volute tongue section:

[0120] First calculate the throat cross-sectional area F9:

[0121]

[0122] Pick

[0123] According to the relationship between the partition tongue placement angle and the specific speed, the partition tongue section throat width G, and the uncast fillet (R5~10) shown in Table 1, L1 is rounded.

[0124] Table 1: Relationship between the angle of the partition and the number of specific revolutions

[0125]

[0126]

[0127] The drawing connects section VIII, tongue section IX and outlet section X to make a smooth transition, while being tangent to the contour formed by sections I to VII to form a complete volute, and L and K are rounded.

[0128] Wherein, the tongue section IX: that is, the IXth section, represents the cross-sectional shape of the diffusion section at the tongue position;

[0129] Exit section X: indicates the cross-sectional shape of the diffuser outlet, usually circular;

[0130] L: represents the length of the diffusion section;

[0131] K: represents the eccentricity, which is the distance that the eccentric outlet volute diffuser deviates from the inlet axis.

[0132] According to the above steps, a fairly systematic and accurate design method of the hydraulic characteristic parameters of the volute of a slurry pump can be obtained by combining calculation and drawing.

[0133] like Figure 5 As shown, the present application also provides a slurry preheater feed pump volute hydraulic design device 500, comprising:

[0134] A diameter calculation module 501, for determining a base circle diameter based on an impeller diameter and a pump specific speed;

[0135] A first width calculation module 502, for determining the volute width based on the impeller flow channel width, the impeller cover plate thickness and the impeller back blade height;

[0136] A height calculation module 503 is used to determine the heights of different sections based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section, and the width of the volute;

[0137] An area calculation module 504, for determining a throat cross-sectional area 505 of the volute based on the VIII cross-sectional area and the pump specific speed;

[0138] A second width calculation module 506, for determining the throat width of the volute tongue section based on the throat cross-sectional area and the top arc radius of the volute section;

[0139] The design result determination module 507 is used to determine the design result of the volute hydraulics based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

[0140] The device for designing hydraulics of the volute of the slurry preheater feed pump provided in the above embodiment can realize the technical solution described in the embodiment of the design method for the volute of the slurry preheater feed pump. The specific implementation principles of the above modules or units can refer to the corresponding contents in the embodiment of the design method for the volute of the slurry preheater feed pump, which will not be repeated here.

[0141] like Figure 6 As shown, the present application also provides an electronic device 600. The electronic device 600 includes a processor 601, a memory 602 and a display 603. Figure 6Only some components of the electronic device 600 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0142] In some embodiments, the memory 602 may be an internal storage unit of the electronic device 600, such as a hard disk or memory of the electronic device 600. In other embodiments, the memory 602 may also be an external storage device of the electronic device 600, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 600.

[0143] Furthermore, the memory 602 may include both an internal storage unit of the electronic device 600 and an external storage device. The memory 602 is used to store application software installed in the electronic device 600 and various data.

[0144] In some embodiments, the processor 601 may be a central processing unit (CPU), a microprocessor or other data processing chip, which is used to run the program code or process data stored in the memory 602, such as the design method of the volute hydraulics of the slurry preheater feed pump in the present application.

[0145] In some embodiments, the display 603 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 603 is used to display information on the electronic device 600 and to display a visual user interface. The components 601-603 of the electronic device 600 communicate with each other via a system bus.

[0146] In some embodiments of the present application, when the processor 601 executes the design program of the volute hydraulics of the slurry preheater feed pump in the memory 602, the following steps may be implemented:

[0147] Determine the base circle diameter based on the impeller diameter and the pump specific speed;

[0148] Determine the volute width based on the impeller flow channel width, impeller cover thickness and impeller back blade height;

[0149] Determine the heights of different sections based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section, and the width of the volute;

[0150] Determine the throat cross-sectional area of ​​the volute based on the cross-sectional area of ​​Section VIII and the specific speed of the pump;

[0151] Determine the throat width of the volute tongue section based on the throat cross-sectional area and the top arc radius of the volute section;

[0152] The design result of the volute hydraulics is determined based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

[0153] It should be understood that: when the processor 601 executes the slurry preheater feed pump volute hydraulic design program in the memory 602, in addition to the above functions, other functions can also be realized. For details, please refer to the description of the corresponding method embodiment above.

[0154] Furthermore, the embodiment of the present application does not specifically limit the type of the electronic device 600 mentioned, and the electronic device 600 may be a portable electronic device such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, etc. Exemplary embodiments of portable electronic devices include but are not limited to portable electronic devices equipped with IOS, Android, Microsoft or other operating systems. The above-mentioned portable electronic device may also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present application, the electronic device 600 may not be a portable electronic device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0155] In another aspect, the present application further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to execute the method for designing the hydraulics of the volute of a slurry preheater feed pump provided by the above methods, the method comprising:

[0156] Determine the base circle diameter based on the impeller diameter and the pump specific speed;

[0157] Determine the volute width based on the impeller flow channel width, impeller cover thickness and impeller back blade height;

[0158] Determine the heights of different sections based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section, and the width of the volute;

[0159] Determine the throat cross-sectional area of ​​the volute based on the cross-sectional area of ​​Section VIII and the pump specific speed;

[0160] Determine the throat width of the volute tongue section based on the throat cross-sectional area and the top arc radius of the volute section;

[0161] The design result of the volute hydraulics is determined based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

[0162] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0163] The above is a detailed introduction to the design method, device and electronic equipment of the volute hydraulics of the slurry preheater feed pump provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application; at the same time, for technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for designing the hydraulics of a volute of a slurry preheater feed pump, characterized in that: include: Determine the base circle diameter based on the impeller diameter and the pump specific speed; Determine the volute width based on the impeller flow channel width, impeller cover thickness and impeller back blade height; Determine the heights of different sections based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section, and the width of the volute; Determine the throat cross-sectional area of ​​the volute based on the cross-sectional area of ​​Section VIII and the pump specific speed; Determine the throat width of the volute tongue section based on the throat cross-sectional area and the top arc radius of the volute section; The design result of the volute hydraulics is determined based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

2. The method for designing hydraulics of the volute of a slurry preheater feed pump according to claim 1, characterized in that: Also includes: Obtain the flow rate, head and speed of the feed pump; Determine the pump specific speed and the volute outlet equivalent diameter based on the flow rate, the head and the speed; Based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section, the volute hydraulic design results are determined, including: The design result of the volute hydraulics is determined based on the volute outlet equivalent diameter, the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

3. The method for designing hydraulics of the volute of a slurry preheater feed pump according to claim 2, characterized in that: Also includes: Based on the flow rate and the average flow velocity of the medium when passing through section VIII, the area of ​​section VIII is determined.

4. The method for designing hydraulics of a volute of a slurry preheater feed pump according to claim 1, characterized in that: Based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section and the width of the volute, the heights of different sections are determined, including: Determine the height of section VIII based on the area of ​​section VIII, the radius of the top arc of the volute section, and the width of the volute; Determine the height of the first section based on the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section and the volute width; Based on the height of the VIII section and the height of the I section, the heights of different sections are determined.

5. The method for designing hydraulics of the volute of a slurry preheater feed pump according to claim 4, characterized in that: The calculation formula for the height of the first section is as follows: Among them, H1 is the height of the first section, V3 is the average flow velocity of the medium when it passes through the VIII section, r is the radius of the top arc of the volute section, B3 is the volute width, and Q is the flow rate of the feed pump.

6. The method for designing hydraulics of a volute of a slurry preheater feed pump according to claim 4, characterized in that: The calculation formula for the height of different sections is as follows: Among them, H n is the nth section height, 2≤n≤7, H1 is the 1st section height, and H8 is the 8th section height.

7. The method for designing hydraulics of a volute of a slurry preheater feed pump according to any one of claims 1 to 6, characterized in that: Based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section, the volute hydraulic design results are determined, including: Based on the preset relationship between the tongue placement angle and the specific speed, the throat width of the volute tongue section, and the uncast fillet, the height value of the tongue position is determined; The design result of the volute hydraulics is determined based on the height value of the baffle tongue position, the base circle diameter, the heights of the different sections and the throat width of the volute baffle tongue section.

8. A design device for the hydraulics of the volute of a slurry preheater feed pump, characterized in that: include: A diameter calculation module for determining the base circle diameter based on the impeller diameter and the pump specific speed; A first width calculation module, for determining the volute width based on the impeller flow channel width, the impeller cover plate thickness and the impeller back blade height; A height calculation module, for determining the heights of different sections based on the area of ​​the VIII section of the feed pump, the flow rate, the average flow velocity of the medium when passing through the VIII section, the radius of the top arc of the volute section and the width of the volute; an area calculation module, for determining the throat cross-sectional area of ​​the volute based on the VIII cross-sectional area and the pump specific speed; A second width calculation module is used to determine the throat width of the volute tongue section based on the throat cross-sectional area and the top arc radius of the volute section; The design result determination module is used to determine the design result of the volute hydraulics based on the base circle diameter, the heights of the different sections and the throat width of the volute tongue section.

9. An electronic device, characterized in that: comprising a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the method for designing the hydraulics of the volute of a slurry preheater feed pump according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for designing hydraulics of a volute of a slurry preheater feed pump are implemented as described in any one of claims 1 to 7.

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