Blade non-uniformly distributed gas-liquid mixed transport pump guide vane

Abstract

The utility model discloses a guide vane of gas -liquid mixed delivery pump of uneven distribution of blade, including the fixed setting of guide vane hub at the outlet end of runner hub, the uneven spiral of guide vane hub outside wall is equipped with a plurality of guide vane blade, and the suction surface of every guide vane blade is provided with the induction boss, and the length of induction boss is along the blade middle arc distribution of guide vane blade, and the upper surface of the suction surface of guide vane blade away from induction boss is streamline curved surface. The utility model discloses a guide vane of gas -liquid mixed delivery pump of uneven distribution of blade, and the non -uniform setting of guide vane blade and the setting of induction boss can effectively alleviate the gas block phenomenon.

Description

Technical Field

[0001] This utility model belongs to the field of fluid machinery and engineering equipment technology, and relates to guide vanes of gas-liquid mixed transport pumps with non-uniformly distributed blades. Background Technology

[0002] Gas-liquid mixed-phase pumps are mainly used to transport two-phase liquid mixtures, especially in the exploitation of oil and gas resources in deep-sea and marginal oil fields. Due to the special design of the guide vanes, gas-liquid mixed-phase pumps can effectively handle the flow problems of gas and liquid two-phase systems. As the flow-through component in the gas-liquid mixed-phase pump, the guide vanes receive the gas-liquid mixture from the impeller outlet during operation, converting the fluid's kinetic energy into pressure energy to achieve pressurization and guiding the gas-liquid mixture towards the pump outlet.

[0003] During operation, when the gas content of a gas-liquid mixed-transfer pump is high, a large number of air bubbles will form inside the impeller. These bubbles easily aggregate to form airlocks, reducing the flow area and flow channel shape, increasing flow losses, and thus degrading pump performance. Currently, many scholars at home and abroad have conducted optimization research on the guide vanes of gas-liquid mixed-transfer pumps and proposed many methods to reduce airlocks and improve pump performance.

[0004] However, existing research and technological improvements still have significant limitations. On the one hand, most optimization schemes are still based on the traditional equally spaced blade layout. This uniform structure fails to fully consider the inherent non-uniformity and unsteady-state characteristics of the gas-liquid two-phase flow in a rotating flow field, resulting in limited ability to regulate local gas phase accumulation and pressure pulsation. On the other hand, the surfaces of existing guide vanes are mostly smooth, lacking an active intervention mechanism for interphase interactions. This makes it difficult to effectively break up the formed gas clumps at the critical stage of flow through the guide vane, causing gas blockage to still occur or worsen in subsequent flow channels. Utility Model Content

[0005] The purpose of this invention is to provide a guide vane for a gas-liquid mixing pump with non-uniformly distributed blades. The non-uniform arrangement of the guide vane blades and the setting of the induced boss can effectively reduce the gas blockage phenomenon.

[0006] The technical solution adopted in this utility model is a gas-liquid mixed pump guide vane with non-uniformly distributed blades, including a guide vane hub fixedly installed at the outlet end of the impeller hub. Multiple guide vane blades are non-uniformly spirally arranged on the outer side wall of the guide vane hub. Each guide vane blade has an induction boss on its suction surface. The length of the induction boss is distributed along the arc of the guide vane blade. The upper surface of the induction boss away from the suction surface of the guide vane blade is a streamlined curved surface.

[0007] Furthermore, the upper surface of the induced protrusion away from the suction surface of the guide vane is on a cross section perpendicular to its length direction, and the arch height ratio of the upper surface profile of the induced protrusion away from the suction surface of the guide vane is 1:10 to 1:15.

[0008] Furthermore, the starting point of the induced protrusion on the suction surface of the guide vane is 1 / 3 of the chord length from the leading edge of the guide vane.

[0009] Furthermore, the length of the induced boss is 20% to 30% of the chord length of the guide vane.

[0010] Furthermore, the height of the induced protrusion is 8% to 12% of the width of the flow channel between the two guide vanes corresponding to the induced protrusion.

[0011] Furthermore, the guide vane has seven blades.

[0012] Furthermore, the central angles between adjacent guide vane blades are 45°, 58°, 53°, 50°, 55°, 47°, and 52°, respectively.

[0013] Furthermore, the heights of the guiding bosses are 1.8mm, 2.9mm, 2.5mm, 2.2mm, 2.7mm, 2.0mm, and 2.4mm, respectively.

[0014] The beneficial effects of this utility model are: This invention effectively improves inflow conditions and prevents air bubbles from adhering to the impeller wall and causing air blockage by non-uniformly arranging guide vanes and setting induced protrusions on the back of the guide vane working surface. The non-uniform arrangement of the guide vanes disrupts the periodicity of the non-uniform flow field at the impeller outlet, effectively reducing local air blockage. The induced protrusions actively adsorb air bubbles, preventing them from accumulating on the back of the blades and causing air blockage. This design, on the one hand, disrupts the periodicity of gas accumulation, reduces pressure pulsation and vibration, thereby preventing synchronous air blockage; on the other hand, when fluid flows through, the induced protrusions locally accelerate the fluid to create a low-pressure zone, drawing in air bubbles accumulated in the low-pressure zone on the blade suction surface and guiding them into the mainstream, significantly improving the guide vane's air-carrying capacity and anti-air blockage performance, and enhancing operational stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the guide vane of the gas-liquid mixing pump with non-uniformly distributed blades according to this utility model; Figure 2 yes Figure 1 Top view; Figure 3 This is a schematic diagram showing the positions of the induction boss and guide vane blades in the guide vane of the gas-liquid mixing pump with non-uniformly distributed blades of this utility model. Figure 4 This is a schematic diagram of the structure of the induced boss in the guide vane of the gas-liquid mixing pump with non-uniformly distributed blades of this utility model. Figure 5 This is a simulation result diagram of the guide vane of the gas-liquid mixing pump with non-uniformly distributed blades according to this utility model.

[0016] In the diagram: 1. Guide vane hub, 2. Guide vane blade, 3. Induction boss. Detailed Implementation

[0017] The following detailed description is provided in conjunction with specific implementation methods.

[0018] Example 1 This utility model relates to a guide vane for a gas-liquid mixed-transfer pump with non-uniformly distributed blades, the structure of which is as follows: Figure 1-2 As shown, it includes a guide vane hub 1 fixedly installed at the outlet end of the impeller hub. Multiple guide vane blades 2 are non-uniformly spirally arranged on the outer wall of the guide vane hub 1. Each guide vane blade 2 has an induction boss 3 on its suction surface. Figure 3 As shown, the length of the induced protrusion 3 is distributed along the arc of the guide vane blade 2, and the upper surface of the induced protrusion 3 away from the suction surface of the guide vane blade 2 is a streamlined curved surface.

[0019] This invention relates to a gas-liquid mixed-phase pump guide vane with non-uniformly distributed blades. When conveying a gas-liquid two-phase flow, the guide vane blades 2 rotate clockwise at high speed around the guide vane hub 1. As the fluid enters the guide vane through the impeller, the non-uniformly distributed blade design disrupts the periodic rhythm of gas blockage, causing the gas's influence to be asynchronous in different flow channels. This suppresses synchronous gas blockage and effectively weakens and disperses pressure pulsations. When the fluid passes through the induction bosses 3 of the guide vane blades 2, the fluid velocity increases, and the pressure decreases, creating a low-pressure zone. This low-pressure zone acts like a "vacuum cleaner," actively adsorbing nearby accumulated air bubbles and guiding them into the mainstream, preventing gas from adhering to the wall surface and causing gas blockage. This significantly improves the guide vane's gas-carrying capacity and anti-gas blockage ability, optimizes the performance of the gas-liquid mixed-phase pump, and enhances the pump's operational stability.

[0020] This invention relates to a gas-liquid mixed-transfer pump guide vane with non-uniformly distributed blades. By incorporating an induction boss 3 on the impeller hub 1 and employing a non-uniform design for the guide vane blades 2, it reduces the phenomenon of gas bubble aggregation and blockage, thereby improving the performance of the mixed-transfer pump. The non-uniform design of the guide vane blades 2 with the induction boss 3 disrupts the periodicity of gas accumulation, reducing pressure pulsation and vibration, thus preventing synchronous blockage. Furthermore, when fluid flows through, the induction boss 3 locally accelerates the fluid, creating a low-pressure zone that draws in bubbles accumulated on the back of the blades and guides them into the mainstream, significantly enhancing the guide vane blades' gas-carrying capacity and anti-blockage performance, and improving operational stability.

[0021] Example 2 This utility model relates to a guide vane for a gas-liquid mixed-transfer pump with non-uniformly distributed blades, the structure of which is as follows: Figure 1-2 As shown, it includes a guide vane hub 1 fixedly installed at the outlet end of the impeller hub. Multiple guide vane blades 2 are non-uniformly spirally arranged on the outer wall of the guide vane hub 1. Each guide vane blade 2 has an induction boss 3 on its suction surface. Figure 3As shown, the length of the induced protrusion 3 is distributed along the arc of the guide vane blade 2, and the upper surface of the induced protrusion 3 away from the suction surface of the guide vane blade 2 is a streamlined curved surface.

[0022] like Figure 4 As shown, the upper surface of the induced protrusion 3 away from the suction surface of the guide vane 2 is on a cross section perpendicular to its length direction, and the arch height ratio of the upper surface contour line of the induced protrusion 3 away from the suction surface of the guide vane 2 is 1:10 to 1:15.

[0023] This invention relates to a gas-liquid mixed-phase pump guide vane with non-uniformly distributed blades. When conveying a gas-liquid two-phase flow, the guide vane blades 2 rotate clockwise at high speed around the guide vane hub 1. As the fluid enters the guide vane through the impeller, the non-uniformly distributed blade design disrupts the periodic rhythm of gas blockage, causing the gas's influence to be asynchronous in different flow channels. This suppresses synchronous gas blockage and effectively weakens and disperses pressure pulsations. When the fluid passes through the induction bosses 3 of the guide vane blades 2, the fluid velocity increases, and the pressure decreases, creating a low-pressure zone. This low-pressure zone acts like a "vacuum cleaner," actively adsorbing nearby accumulated air bubbles and guiding them into the mainstream, preventing gas from adhering to the wall surface and causing gas blockage. This significantly improves the guide vane's gas-carrying capacity and anti-gas blockage ability, optimizes the performance of the gas-liquid mixed-phase pump, and enhances the pump's operational stability.

[0024] This invention relates to a gas-liquid mixed-transfer pump guide vane with non-uniformly distributed blades. By incorporating an induction boss 3 on the impeller hub 1 and employing a non-uniform design for the guide vane blades 2, it reduces the phenomenon of gas bubble aggregation and blockage, thereby improving the performance of the mixed-transfer pump. The non-uniform design of the guide vane blades 2 with the induction boss 3 disrupts the periodicity of gas accumulation, reducing pressure pulsation and vibration, thus preventing synchronous blockage. Furthermore, when fluid flows through, the induction boss 3 locally accelerates the fluid, creating a low-pressure zone that draws in bubbles accumulated on the back of the blades and guides them into the mainstream, significantly enhancing the guide vane blades' gas-carrying capacity and anti-blockage performance, and improving operational stability.

[0025] Example 3 This utility model relates to a guide vane for a gas-liquid mixed-transfer pump with non-uniformly distributed blades, the structure of which is as follows: Figure 1-2 As shown, it includes a guide vane hub 1 fixedly installed at the outlet end of the impeller hub. Multiple guide vane blades 2 are non-uniformly spirally arranged on the outer wall of the guide vane hub 1. Each guide vane blade 2 has an induction boss 3 on its suction surface. Figure 3 As shown, the length of the induced protrusion 3 is distributed along the arc of the guide vane blade 2, and the upper surface of the induced protrusion 3 away from the suction surface of the guide vane blade 2 is a streamlined curved surface.

[0026] like Figure 4As shown, the upper surface of the induced protrusion 3 away from the suction surface of the guide vane 2 is on a cross section perpendicular to its length direction, and the arch height ratio of the upper surface contour line of the induced protrusion 3 away from the suction surface of the guide vane 2 is 1:10 to 1:15.

[0027] The starting point of the induced protrusion 3 on the suction surface of the guide vane blade 2 is 1 / 3 of the chord length from the leading edge of the guide vane blade 2.

[0028] This invention relates to a gas-liquid mixed-phase pump guide vane with non-uniformly distributed blades. When conveying a gas-liquid two-phase flow, the guide vane blades 2 rotate clockwise at high speed around the guide vane hub 1. As the fluid enters the guide vane through the impeller, the non-uniformly distributed blade design disrupts the periodic rhythm of gas blockage, causing the gas's influence to be asynchronous in different flow channels. This suppresses synchronous gas blockage and effectively weakens and disperses pressure pulsations. When the fluid passes through the induction bosses 3 of the guide vane blades 2, the fluid velocity increases, and the pressure decreases, creating a low-pressure zone. This low-pressure zone acts like a "vacuum cleaner," actively adsorbing nearby accumulated air bubbles and guiding them into the mainstream, preventing gas from adhering to the wall surface and causing gas blockage. This significantly improves the guide vane's gas-carrying capacity and anti-gas blockage ability, optimizes the performance of the gas-liquid mixed-phase pump, and enhances the pump's operational stability.

[0029] This invention relates to a gas-liquid mixed-transfer pump guide vane with non-uniformly distributed blades. By incorporating an induction boss 3 on the impeller hub 1 and employing a non-uniform design for the guide vane blades 2, it reduces the phenomenon of gas bubble aggregation and blockage, thereby improving the performance of the mixed-transfer pump. The non-uniform design of the guide vane blades 2 with the induction boss 3 disrupts the periodicity of gas accumulation, reducing pressure pulsation and vibration, thus preventing synchronous blockage. Furthermore, when fluid flows through, the induction boss 3 locally accelerates the fluid, creating a low-pressure zone that draws in bubbles accumulated on the back of the blades and guides them into the mainstream, significantly enhancing the guide vane blades' gas-carrying capacity and anti-blockage performance, and improving operational stability.

[0030] Example 4 This utility model relates to a guide vane for a gas-liquid mixed-transfer pump with non-uniformly distributed blades, the structure of which is as follows: Figure 1-2 As shown, it includes a guide vane hub 1 fixedly installed at the outlet end of the impeller hub. Multiple guide vane blades 2 are non-uniformly spirally arranged on the outer wall of the guide vane hub 1. Each guide vane blade 2 has an induction boss 3 on its suction surface. Figure 3 As shown, the length of the induced protrusion 3 is distributed along the arc of the guide vane blade 2, and the upper surface of the induced protrusion 3 away from the suction surface of the guide vane blade 2 is a streamlined curved surface.

[0031] like Figure 4 As shown, the upper surface of the induced protrusion 3 away from the suction surface of the guide vane 2 is on a cross section perpendicular to its length direction, and the arch height ratio of the upper surface contour line of the induced protrusion 3 away from the suction surface of the guide vane 2 is 1:10 to 1:15.

[0032] The starting point of the induced protrusion 3 on the suction surface of the guide vane blade 2 is 1 / 3 of the chord length from the leading edge of the guide vane blade 2.

[0033] The length of the induced boss 3 is 20% to 30% of the chord length of the guide vane blade 2.

[0034] This invention relates to a gas-liquid mixed-phase pump guide vane with non-uniformly distributed blades. When conveying a gas-liquid two-phase flow, the guide vane blades 2 rotate clockwise at high speed around the guide vane hub 1. As the fluid enters the guide vane through the impeller, the non-uniformly distributed blade design disrupts the periodic rhythm of gas blockage, causing the gas's influence to be asynchronous in different flow channels. This suppresses synchronous gas blockage and effectively weakens and disperses pressure pulsations. When the fluid passes through the induction bosses 3 of the guide vane blades 2, the fluid velocity increases, and the pressure decreases, creating a low-pressure zone. This low-pressure zone acts like a "vacuum cleaner," actively adsorbing nearby accumulated air bubbles and guiding them into the mainstream, preventing gas from adhering to the wall surface and causing gas blockage. This significantly improves the guide vane's gas-carrying capacity and anti-gas blockage ability, optimizes the performance of the gas-liquid mixed-phase pump, and enhances the pump's operational stability.

[0035] This invention relates to a gas-liquid mixed-transfer pump guide vane with non-uniformly distributed blades. By incorporating an induction boss 3 on the impeller hub 1 and employing a non-uniform design for the guide vane blades 2, it reduces the phenomenon of gas bubble aggregation and blockage, thereby improving the performance of the mixed-transfer pump. The non-uniform design of the guide vane blades 2 with the induction boss 3 disrupts the periodicity of gas accumulation, reducing pressure pulsation and vibration, thus preventing synchronous blockage. Furthermore, when fluid flows through, the induction boss 3 locally accelerates the fluid, creating a low-pressure zone that draws in bubbles accumulated on the back of the blades and guides them into the mainstream, significantly enhancing the guide vane blades' gas-carrying capacity and anti-blockage performance, and improving operational stability.

[0036] Example 5 This utility model relates to a guide vane for a gas-liquid mixed-transfer pump with non-uniformly distributed blades, the structure of which is as follows: Figure 1-2 As shown, it includes a guide vane hub 1 fixedly installed at the outlet end of the impeller hub. Multiple guide vane blades 2 are non-uniformly spirally arranged on the outer wall of the guide vane hub 1. Each guide vane blade 2 has an induction boss 3 on its suction surface. Figure 3 As shown, the length of the induced protrusion 3 is distributed along the arc of the guide vane blade 2, and the upper surface of the induced protrusion 3 away from the suction surface of the guide vane blade 2 is a streamlined curved surface.

[0037] like Figure 4 As shown, the upper surface of the induced protrusion 3 away from the suction surface of the guide vane 2 is on a cross section perpendicular to its length direction, and the arch height ratio of the upper surface contour line of the induced protrusion 3 away from the suction surface of the guide vane 2 is 1:10 to 1:15.

[0038] The starting point of the induced protrusion 3 on the suction surface of the guide vane blade 2 is 1 / 3 of the chord length from the leading edge of the guide vane blade 2.

[0039] The length of the induced boss 2 is 20% to 30% of the chord length of the guide vane blade 2.

[0040] The height of the induced protrusion 3 is 8% to 12% of the width of the flow channel between the two guide vanes 2 corresponding to the induced protrusion 3.

[0041] This invention relates to a gas-liquid mixed-phase pump guide vane with non-uniformly distributed blades. When conveying a gas-liquid two-phase flow, the guide vane blades 2 rotate clockwise at high speed around the guide vane hub 1. As the fluid enters the guide vane through the impeller, the non-uniformly distributed blade design disrupts the periodic rhythm of gas blockage, causing the gas's influence to be asynchronous in different flow channels. This suppresses synchronous gas blockage and effectively weakens and disperses pressure pulsations. When the fluid passes through the induction bosses 3 of the guide vane blades 2, the fluid velocity increases, and the pressure decreases, creating a low-pressure zone. This low-pressure zone acts like a "vacuum cleaner," actively adsorbing nearby accumulated air bubbles and guiding them into the mainstream, preventing gas from adhering to the wall surface and causing gas blockage. This significantly improves the guide vane's gas-carrying capacity and anti-gas blockage ability, optimizes the performance of the gas-liquid mixed-phase pump, and enhances the pump's operational stability.

[0042] This invention relates to a gas-liquid mixed-transfer pump guide vane with non-uniformly distributed blades. By incorporating an induction boss 3 on the impeller hub 1 and employing a non-uniform design for the guide vane blades 2, it reduces the phenomenon of gas bubble aggregation and blockage, thereby improving the performance of the mixed-transfer pump. The non-uniform design of the guide vane blades 2 with the induction boss 3 disrupts the periodicity of gas accumulation, reducing pressure pulsation and vibration, thus preventing synchronous blockage. Furthermore, when fluid flows through, the induction boss 3 locally accelerates the fluid, creating a low-pressure zone that draws in bubbles accumulated on the back of the blades and guides them into the mainstream, significantly enhancing the guide vane blades' gas-carrying capacity and anti-blockage performance, and improving operational stability.

[0043] Example 6 This utility model relates to a guide vane for a gas-liquid mixed-transfer pump with non-uniformly distributed blades, the structure of which is as follows: Figure 1-2 As shown, it includes a guide vane hub 1 fixedly installed at the outlet end of the impeller hub. Multiple guide vane blades 2 are non-uniformly spirally arranged on the outer wall of the guide vane hub 1. Each guide vane blade 2 has an induction boss 3 on its suction surface. Figure 3 As shown, the length of the induced protrusion 3 is distributed along the arc of the guide vane blade 2, and the upper surface of the induced protrusion 3 away from the suction surface of the guide vane blade 2 is a streamlined curved surface.

[0044] like Figure 4As shown, the upper surface of the induced protrusion 3 away from the suction surface of the guide vane 2 is on a cross section perpendicular to its length direction, and the arch height ratio of the upper surface contour line of the induced protrusion 3 away from the suction surface of the guide vane 2 is 1:10 to 1:15.

[0045] The starting point of the induced protrusion 3 on the suction surface of the guide vane blade 2 is 1 / 3 of the chord length from the leading edge of the guide vane blade 2.

[0046] The length of the induced boss 2 is 20% to 30% of the chord length of the guide vane blade 2.

[0047] The height of the induced protrusion 3 is 8% to 12% of the width of the flow channel between the two guide vanes 2 corresponding to the induced protrusion 3.

[0048] The guide vane blade 2 has 7 blades.

[0049] The central angles between adjacent guide vane blades are 45°, 58°, 53°, 50°, 55°, 47°, and 52°, respectively.

[0050] The heights of the guide bosses 3 are 1.8mm, 2.9mm, 2.5mm, 2.2mm, 2.7mm, 2.0mm, and 2.4mm, respectively.

[0051] This invention relates to a gas-liquid mixed-phase pump guide vane with non-uniformly distributed blades. When conveying a gas-liquid two-phase flow, the guide vane blades 2 rotate clockwise at high speed around the guide vane hub 1. As the fluid enters the guide vane through the impeller, the non-uniformly distributed blade design disrupts the periodic rhythm of gas blockage, causing the gas's influence to be asynchronous in different flow channels. This suppresses synchronous gas blockage and effectively weakens and disperses pressure pulsations. When the fluid passes through the induction bosses 3 of the guide vane blades 2, the fluid velocity increases, and the pressure decreases, creating a low-pressure zone. This low-pressure zone acts like a "vacuum cleaner," actively adsorbing nearby accumulated air bubbles and guiding them into the mainstream, preventing gas from adhering to the wall surface and causing gas blockage. This significantly improves the guide vane's gas-carrying capacity and anti-gas blockage ability, optimizes the performance of the gas-liquid mixed-phase pump, and enhances the pump's operational stability.

[0052] This invention relates to a gas-liquid mixed-transfer pump guide vane with non-uniformly distributed blades. By incorporating an induction boss 3 on the impeller hub 1 and employing a non-uniform design for the guide vane blades 2, it reduces the phenomenon of gas bubble aggregation and blockage, thereby improving the performance of the mixed-transfer pump. The non-uniform design of the guide vane blades 2 with the induction boss 3 disrupts the periodicity of gas accumulation, reducing pressure pulsation and vibration, thus preventing synchronous blockage. Furthermore, when fluid flows through, the induction boss 3 locally accelerates the fluid, creating a low-pressure zone that draws in bubbles accumulated on the back of the blades and guides them into the mainstream, significantly enhancing the guide vane blades' gas-carrying capacity and anti-blockage performance, and improving operational stability.

[0053] Example 7 This utility model relates to a guide vane for a gas-liquid mixed-transfer pump with non-uniformly distributed blades, the structure of which is as follows: Figure 1-2 As shown, it includes a guide vane hub 1 fixedly installed at the outlet end of the impeller hub. Multiple guide vane blades 2 are non-uniformly spirally arranged on the outer wall of the guide vane hub 1. Each guide vane blade 2 has an induction boss 3 on its suction surface. Figure 3 As shown, the length of the induced protrusion 3 is distributed along the arc of the guide vane blade 2, and the upper surface of the induced protrusion 3 away from the suction surface of the guide vane blade 2 is a streamlined curved surface.

[0054] like Figure 4 As shown, the upper surface of the induced protrusion 3 away from the suction surface of the guide vane 2 is on a cross section perpendicular to its length direction, and the arch height ratio of the upper surface contour line of the induced protrusion 3 away from the suction surface of the guide vane 2 is 1:10 to 1:15.

[0055] The starting point of the induced protrusion 3 on the suction surface of the guide vane blade 2 is 1 / 3 of the chord length from the leading edge of the guide vane blade 2.

[0056] The length of the induced boss 2 is 20% to 30% of the chord length of the guide vane blade 2.

[0057] The height of the induced protrusion 3 is 8% to 12% of the width of the flow channel between the two guide vanes 2 corresponding to the induced protrusion 3.

[0058] The guide vane blade 2 has 7 blades.

[0059] The central angles between adjacent guide vane blades are 45°, 58°, 53°, 50°, 55°, 47°, and 52°, respectively.

[0060] The heights of the guide bosses 3 are 1.8mm, 2.9mm, 2.5mm, 2.2mm, 2.7mm, 2.0mm, and 2.4mm, respectively.

[0061] In this embodiment, the guide vane suction surface chord length is 121.05 mm, the guide vane pressure surface chord length is 116.33 mm, the guide vane inlet rim diameter is 135.76 mm, and the guide vane outlet rim diameter is 108.96 mm. Based on this, the lengths of the induction boss 3 are 28 mm, 34 mm, 32 mm, 30 mm, 33 mm, 29 mm, and 31 mm, respectively.

[0062] This invention relates to a gas-liquid mixed-phase pump guide vane with non-uniformly distributed blades. When conveying a gas-liquid two-phase flow, the guide vane blades 2 rotate clockwise at high speed around the guide vane hub 1. As the fluid enters the guide vane through the impeller, the non-uniformly distributed blade design disrupts the periodic rhythm of gas blockage, causing the gas's influence to be asynchronous in different flow channels. This suppresses synchronous gas blockage and effectively weakens and disperses pressure pulsations. When the fluid passes through the induction bosses 3 of the guide vane blades 2, the fluid velocity increases, and the pressure decreases, creating a low-pressure zone. This low-pressure zone acts like a "vacuum cleaner," actively adsorbing nearby accumulated air bubbles and guiding them into the mainstream, preventing gas from adhering to the wall surface and causing gas blockage. This significantly improves the guide vane's gas-carrying capacity and anti-gas blockage ability, optimizes the performance of the gas-liquid mixed-phase pump, and enhances the pump's operational stability.

[0063] This invention relates to a gas-liquid mixed-transfer pump guide vane with non-uniformly distributed blades. By incorporating an induction boss 3 on the impeller hub 1 and employing a non-uniform design for the guide vane blades 2, it reduces the phenomenon of gas bubble aggregation and blockage, thereby improving the performance of the mixed-transfer pump. The non-uniform design of the guide vane blades 2 with the induction boss 3 disrupts the periodicity of gas accumulation, reducing pressure pulsation and vibration, thus preventing synchronous blockage. Furthermore, when fluid flows through, the induction boss 3 locally accelerates the fluid, creating a low-pressure zone that draws in bubbles accumulated on the back of the blades and guides them into the mainstream, significantly enhancing the guide vane blades' gas-carrying capacity and anti-blockage performance, and improving operational stability.

[0064] Based on this embodiment, a complete full-flow channel model of the gas-liquid mixed-flow pump guide vane, including the impeller and the non-uniformly distributed blades of this invention, was established using Unigraphics NX software. A baseline model with the same impeller, number of blades, and basic dimensions as the model of this invention was also established, but with circumferentially uniformly distributed guide vane blades and no induced bosses. ANSYS Meshing was used to perform structured mesh generation of the computational domain. ANSYS CFX software was used to numerically calculate the internal flow field of the mixed-flow gas-liquid pump. By comparing the simulation results of the model of this invention and the baseline model, the time-domain signal of pressure pulsation measured at the guide vane inlet and the spectrum obtained after fast Fourier transform were obtained, as shown below. Figure 5 As shown, the results indicate that the dominant frequency amplitude of pressure pulsation in this novel model is 8.5 kPa, while that of the baseline model is as high as 21.3 kPa, representing a reduction of 60%. This demonstrates that the design of the non-uniformly distributed blade with induced bosses effectively disrupts the periodic interference between the impeller outlet wake and the guide vanes, promotes the mixing and transport of the gas and liquid phases, improves the gas accumulation phenomenon, and enhances the stability of unit operation.

Claims

1. A guide vane for a gas-liquid mixed-transfer pump with non-uniformly distributed blades, characterized in that, The device includes a guide vane hub (1) fixedly installed at the outlet end of the impeller hub. The outer wall of the guide vane hub (1) is provided with multiple guide vane blades (2) in a non-uniform spiral. Each guide vane blade (2) has an induction boss (3) on its suction surface. The length of the induction boss (3) is distributed along the arc of the blade of the guide vane blade (2). The upper surface of the induction boss (3) facing away from the suction surface of the guide vane blade (2) is a streamlined curved surface.

2. The guide vane of the gas-liquid mixing pump with non-uniformly distributed blades according to claim 1, characterized in that, The upper surface of the induced protrusion (3) facing away from the suction surface of the guide vane (2) is on a cross section perpendicular to its length direction, and the arch height ratio of the upper surface contour line of the induced protrusion (3) facing away from the suction surface of the guide vane (2) is 1:10 to 1:

15.

3. The guide vane of the gas-liquid mixing pump with non-uniformly distributed blades according to claim 2, characterized in that, The starting point of the induction boss (3) on the suction surface of the guide vane (2) is 1 / 3 of the chord length from the leading edge of the guide vane (2).

4. The guide vane of the gas-liquid mixing pump with non-uniformly distributed blades according to claim 3, characterized in that, The length of the guiding boss (3) is 20% to 30% of the chord length of the guide vane (2).

5. The guide vane of the gas-liquid mixing pump with non-uniformly distributed blades according to claim 4, characterized in that, The height of the induction boss (3) is 8% to 12% of the width of the flow channel between the two guide vanes (2) corresponding to the induction boss (3).

6. The guide vane of the gas-liquid mixing pump with non-uniformly distributed blades according to claim 5, characterized in that, The guide vane (2) has 7 blades.

7. The guide vane of the gas-liquid mixing pump with non-uniformly distributed blades according to claim 6, characterized in that, The central angles between adjacent guide vane blades (2) are 45°, 58°, 53°, 50°, 55°, 47°, and 52° respectively.

8. The guide vane of the gas-liquid mixing pump with non-uniformly distributed blades according to claim 7, characterized in that, The heights of the guiding bosses (3) are 1.8mm, 2.9mm, 2.5mm, 2.2mm, 2.7mm, 2.0mm, and 2.4mm, respectively.

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