Flow deflector structure for pump

Abstract

The utility model discloses a flow guide body structure for a pump, which relates to the technical field of flow guide body structures and comprises a main body shell, a flow guide body and a flow guide body, according to the utility model, the innovative design of the guide vane group effectively improves the flow velocity distribution of fluid, the arc-shaped structure of the inlet section enables the fluid to enter stably, reduces initial impact and turbulent flow and lays a good foundation for subsequent flow at a specific inclination angle, radius and length, and the S-shaped curve structure of the transition section homogenizes the flow velocity according to the gradual change characteristic of the curvature radius; a local high-speed or low-speed area is prevented from being generated, it is ensured that fluid flows smoothly and stably in the whole flow channel, the reasonable angle and length design of the outlet section enables the fluid to flow out accurately and be well connected with a follow-up path of the flow channel, and therefore the flowing resistance of the fluid in the pump is reduced, the lift and flow of the pump are improved, and the hydraulic efficiency of the pump is overall improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flow guide structure technical field, concretely is a pump flow guide structure. BACKGROUND

[0002] Pump undertakes the key task of liquid delivery in many industrial fields, and its performance has a decisive influence on the efficiency, stability and energy consumption of the whole industrial process. As an important component that affects the flow characteristics of fluid inside the pump, the traditional structure of the flow guide has many shortcomings.

[0003] The traditional flow guide usually has a simple flow channel design, such as a straight cylinder type or a basically arc-shaped flow channel. This single flow channel shape makes it difficult to uniformize the flow velocity distribution of fluid when flowing through the flow guide. The uneven flow velocity leads to intensified turbulence phenomenon in local areas, and the intensity of fluid impact on the wall surface of the flow guide and internal components increases.

[0004] This not only causes a large amount of energy loss, greatly reduces the overall efficiency of the pump, but also causes strong vibration and noise, which greatly threatens the operation stability of the pump, accelerates the wear of each component in the pump, shortens the service life of the pump, and increases the cost of the enterprise in equipment maintenance, replacement, and production interruption caused by downtime.

[0005] Therefore, the present application is proposed. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a pump flow guide structure to solve the problems in the background art.

[0007] To solve the above technical problems, the utility model provides a pump flow guide structure, which comprises a main body shell with a hollow flow channel cavity inside; a flow guide group arranged in the flow channel cavity, the flow guide group comprising a plurality of circumferentially uniformly distributed flow guide vanes, each flow guide vane comprising an inlet section, a transition section and an outlet section connected in sequence.

[0008] Further, the inlet section is an arc-shaped structure inclined to the center axis direction of the flow channel cavity, the inclination angle is α, and 15°≤α≤30°, the arc radius of the inlet section is R1, and 20mm≤R1≤30mm, the length of the inlet section is L1, and 30mm≤L1≤50mm.

[0009] Further, the transition section is an S-shaped curve structure, and the curvature radius gradually decreases from the connection end with the inlet section (201) to the connection end with the outlet section.

[0010] Further, the outlet section is a straight line type structure, the included angle with the central axis of the flow channel cavity is β, and 5°≤β≤15°, the length of the outlet section is L2, and 40mm≤L2≤60mm.

[0011] Further, the inner wall of the main body shell is provided with a plurality of circumferentially distributed turbulence protrusions, the turbulence protrusions are triangular, the height of the turbulence protrusions is h, and 3mm≤h≤5mm, the spacing between adjacent turbulence protrusions is d, and 10mm≤d≤20mm.

[0012] Further, the inlet of the flow channel cavity is provided with a horn-shaped flow guide flared portion, the flared angle of the flow guide flared portion is γ, and 30°≤γ≤45°.

[0013] Further, the surface of the flow guide vane is coated with a wear-resistant anticorrosive coating, which is a ceramic coating or a tungsten carbide coating.

[0014] Further, the main body shell is made of aluminum alloy material, and the thickness of the main body shell is t, and 5mm≤t≤8mm.

[0015] Compared with the prior art, the pump has the beneficial effects that:

[0016] In the utility model, the innovative design of the flow guide vane group effectively improves the flow velocity distribution of the fluid, the arc structure of the inlet section has a specific inclination angle, radius and length, so that the fluid can enter smoothly and reduce the initial impact and turbulence, laying a good foundation for subsequent flow, the S-shaped curve structure of the transition section has a gradual change in curvature radius, which can homogenize the flow velocity and avoid the generation of local high-speed or low-speed areas, so as to ensure the smooth and stable flow of the fluid in the entire flow channel, the reasonable angle and length design of the outlet section can make the fluid flow out accurately and connect well with the subsequent path of the flow channel, thereby reducing the flow resistance of the fluid in the pump, improving the lift and flow of the pump, and improving the overall hydraulic efficiency of the pump. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a schematic diagram of the overall structure of a pump flow guide structure;

[0018] Fig. 2 It is a schematic diagram of the cross-sectional structure of a pump flow guide structure;

[0019] Fig. 3 It is a schematic diagram of the flow guide vane structure of a pump flow guide structure.

[0020] In the drawing: 1, main body shell; 2, flow guide vane; 201, inlet section; 202, transition section; 203, outlet section; 3, flow guide flared portion; 4, butt flange; 5, turbulence protrusion. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0022] Please refer to Figs. 1-3 The utility model provides a technical scheme:

[0023] A pump flow guide structure, comprising, main body shell 1, the both ends of main body shell 1 are provided with two butt flanges 4 for connecting pump body and pipeline.

[0024] Its inside has hollow flow passage cavity;Flow guide group, be provided in flow passage cavity, flow guide group includes a plurality of circumferentially uniform distribution flow guide vane 2, and each flow guide vane 2 includes the inlet section 201, transition section 202 and outlet section 203 connected in turn.

[0025] The inlet section 201 is the arc structure that inclines to the center axis direction of flow passage cavity, and the inclination angle is α, and 15 ° ≤ α ≤ 30 °, the arc radius of inlet section 201 is R1, and 20mm ≤ R1 ≤ 30mm, the length of inlet section 201 is L1, and 30mm ≤ L1 ≤ 50mm.

[0026] The arc structure that inclines to the center axis direction of flow passage cavity of inlet section 201 is the design that is obtained through a large number of experiments and simulation optimization.

[0027] The inclination angle α changes between 15 ° and 30 °, for example, when α = 20 °, the fluid that meets can be met with the best angle, so that the fluid is smoothly transitioned along the arc surface in the moment of entering, and the turbulence phenomenon caused by direct impact is avoided.

[0028] The arc radius R1 is 20mm to 30mm, such as R1 = 25mm, the radius size is matched with the flow and flow rate characteristics of fluid, and fluid can be effectively guided to start flowing along the predetermined path.

[0029] The length L1 of inlet section 201 is 30mm to 50mm, and L1 = 40mm is provided, and the appropriate length ensures that the fluid has enough time and space to adjust the flow state in the inlet section, and lays a good foundation for subsequent flow.

[0030] The transition section 202 is S-shaped curve structure, and the curvature radius gradually decreases from the connecting end with the inlet section 201 to the connecting end with the outlet section 203.

[0031] The S-shaped curve structure of the transition section 202 is a key link to achieve uniform distribution of flow velocity.

[0032] The radius of curvature gradually decreases from the connection end with the inlet section to the connection end with the outlet section, and this trend can skillfully guide the fluid to gradually change the flow direction.

[0033] When the fluid flows through the transition section, due to the continuous change of the radius of curvature, the centripetal force received by the fluid at different positions is also gradually changing, so that the velocity gradient inside the fluid gradually tends to be uniform.

[0034] For example, near the inlet end, the larger radius of curvature allows the fluid to turn more gently, and as it approaches the outlet end, the radius of curvature decreases, and the fluid turns more obviously, but due to the gradual change, it does not cause severe turbulence or vortex, but makes the fluid achieve uniformization adjustment of flow velocity in the entire transition section.

[0035] The outlet section 203 is a straight line structure, and the included angle between the outlet section 203 and the central axis of the flow passage cavity is β, and 5°≤β≤15°, the length of the outlet section 203 is L2, and 40mm≤L2≤60mm.

[0036] The outlet section 203 is a straight line structure, and the included angle between the outlet section 203 and the central axis of the flow passage cavity is β, and 5°≤β≤15°, the length of the outlet section 203 is L2, and 40mm≤L2≤60mm.

[0037] The design of this angle can ensure that the fluid flows out of the guide vane 2 in the right direction, so that it can better connect with the subsequent flow path of the flow passage cavity, and further optimize the fluid dynamic performance in the entire flow passage.

[0038] The length L2 of the outlet section 203 is 40mm to 60mm, and L2=50mm is taken, which is enough to ensure that the fluid can fully stabilize its flow state before flowing out of the guide vane 2, avoiding new turbulence or unstable factors caused by premature entering the flow passage cavity.

[0039] Further, a plurality of turbulence protrusions 5 are arranged on the inner wall of the main body shell 1 in a circumferential direction, the turbulence protrusions 5 are triangular, the height h of the turbulence protrusions 5 is 3mm to 5mm, and the spacing d between adjacent turbulence protrusions 5 is 10mm to 20mm.

[0040] The turbulence protrusions 5 are triangular, the height h of the turbulence protrusions 5 is 3mm to 5mm, for example h=4mm, and the spacing d between adjacent turbulence protrusions 5 is 10mm to 20mm, for example d=15mm. When the fluid flows along the wall surface of the flow passage cavity, a boundary layer is formed due to the viscous effect of the wall surface.

[0041] The flow velocity of the fluid in the boundary layer is relatively low, which is easy to cause the formation of local dead zones, affecting the uniformity of the fluid in the entire flow passage.

[0042] The presence of the spoiler 5 breaks the stable state of the boundary layer, and when the fluid flows through the spoiler, it generates local turbulence and eddies around it.

[0043] These turbulence and eddies can promote the mixing of the fluid in the boundary layer with the main fluid, so that the originally slow boundary layer fluid is rolled into the main fluid, thereby improving the uniformity of the fluid on the entire cross section of the flow passage, reducing the energy loss and efficiency reduction problems caused by local dead zones.

[0044] Further, the inlet of the flow passage cavity is provided with a trumpet-shaped flow guide flared 3, the flared angle of the flow guide flared 3 is γ, and 30°≤γ≤45°.

[0045] The trumpet-shaped flow guide flared 3 provided at the inlet of the flow passage cavity makes the fluid diffuse when it enters the flow passage cavity from the external pipeline, and the flow guide flared 3 guides the fluid to diffuse at a specific flared angle γ between 30° and 45°, such as γ=35°.

[0046] This trumpet-shaped design can effectively reduce the flow rate when the fluid enters, reduce the local pressure loss caused by sudden contraction or expansion, and make the fluid enter the subsequent flow guide vane 2 area more smoothly, just like laying a gentle "bridge" for the fluid to enter the flow passage cavity, greatly improving the efficiency and stability of the fluid entering.

[0047] Further, the surface of the flow guide vane 2 is coated with a wear-resistant and corrosion-resistant coating, which is a ceramic coating or a tungsten carbide coating.

[0048] During the long-term operation of the pump, the fluid may contain various corrosive substances or solid particles, which can cause wear and corrosion to the flow guide vane 2.

[0049] The ceramic coating has high hardness, high wear resistance and good chemical stability, which can effectively resist the erosion and corrosion of the fluid.

[0050] The tungsten carbide coating also has excellent wear resistance and certain corrosion resistance, which can provide reliable protection for the flow guide vane 2 in harsh working environment.

[0051] By coating such wear-resistant and corrosion-resistant coating, the service life of the flow guide vane 2 is significantly prolonged, reducing the pump repair and replacement costs caused by blade damage, and improving the overall reliability and economy of the pump.

[0052] Further, the main body shell 1 is made of aluminum alloy material, and its thickness is t, and 5mm≤t≤8mm.

[0053] The main body shell 1 is made of aluminum alloy material as the external frame of the whole pump flow guide structure. The aluminum alloy material has many advantages, and its density is relatively low, which can effectively reduce the overall weight, which is positive for reducing the energy consumption of the pump during operation.

[0054] At the same time, it has sufficient strength and rigidity, can withstand the pressure generated by the fluid in the high-speed flow process and various stresses caused by vibration, and its thickness t is accurately controlled between 5mm to 8mm, for example, set t = 6mm, such thickness can ensure the stability of the structure, and will not affect the overall performance of the pump due to excessive weight.

Claims

1. A fluid guide structure for a pump, characterized in that: include, The main body shell (1) has a hollow flow channel cavity inside; The flow guide group is set in the flow channel cavity. The flow guide group includes multiple flow guide blades (2) evenly distributed in the circumferential direction. Each flow guide blade (2) includes an inlet section (201), a transition section (202) and an outlet section (203) connected in sequence.

2. The pump fluid guide structure as described in claim 1, characterized in that: The inlet section (201) is an arc-shaped structure inclined towards the central axis of the flow channel cavity, with an inclination angle of α, and 15°≤α≤30°. The arc radius of the inlet section (201) is R1, and 20mm≤R1≤30mm. The length of the inlet section (201) is L1, and 30mm≤L1≤50mm.

3. The pump fluid guide structure as described in claim 2, characterized in that: The transition section (202) has an S-shaped curve structure, and its radius of curvature gradually decreases from the end connected to the inlet section (201) to the end connected to the outlet section (203).

4. The pump fluid guide structure as described in claim 3, characterized in that: The outlet section (203) is a straight structure with an angle of β between it and the central axis of the flow channel cavity, and 5°≤β≤15°. The length of the outlet section (203) is L2, and 40mm≤L2≤60mm.

5. The pump fluid guide structure as described in claim 4, characterized in that: The inner wall of the main body shell (1) is provided with a plurality of circumferentially distributed turbulence protrusions (5). The turbulence protrusions (5) are triangular in shape, with a height of h, and 3mm≤h≤5mm. The distance between adjacent turbulence protrusions (5) is d, and 10mm≤d≤20mm.

6. The pump fluid guide structure as described in claim 5, characterized in that: The inlet of the flow channel cavity is provided with a horn-shaped guide flare (3), and the flare angle of the guide flare (3) is γ, and 30°≤γ≤45°.

7. The pump fluid guide structure as described in claim 6, characterized in that: The surface of the guide vane (2) is coated with a wear-resistant and corrosion-resistant coating, which is a ceramic coating or a tungsten carbide coating.

8. The pump fluid guide structure as described in claim 7, characterized in that: The main body shell (1) is made of aluminum alloy with a thickness of t, and 5mm≤t≤8mm.

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