Flow deflecting device with wave-shaped fin plates

Abstract

The invention belongs to the technical field of deflectors, and particularly relates to a bias flow device with wave-shaped fin plates. According to the technical scheme, the bias flow device with the wave-shaped fin plates comprises a baffling part, the baffling part is in an annular shape, and a connecting part is arranged on the upper side of the baffling part; a fin plate is arranged at the bottom of the inner wall of the baffling part, and the molded line of the side, away from the inner wall of the baffling part, of the fin plate is a curve. The invention provides a bias flow device with a wave-shaped fin plate.

Description

Technical Field

[0001] The invention belongs to the technical field of deflectors, and in particular relates to a flow deviation device with a corrugated fin plate. Background Art

[0002] The Pelton turbine is a hydraulic machine that uses high-speed water flow to impact the runner to do work. The nozzle is the power source for the work of impacting the Pelton. When the unit is shut down or the working condition is switched, a deflector is needed to deflect the high-speed jet outflowing from the nozzle, thereby realizing the rapid switching of the unit power. With the development of technology, deflectors with flow deflection are widely used in Pelton turbines because of their simple processing and reliable structure.

[0003] Conventional deflection devices often use smooth arc surfaces to deflect the jet, but the strength of the water flow impact part on the deflection mechanism is weak and has little effect on dissipating water flow energy. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, an object of the present invention is to provide a flow deflection device with a corrugated fin plate.

[0005] The technical solution adopted by the present invention is:

[0006] A flow deflection device with a corrugated fin plate comprises a deflector portion which is annular in shape and has a connecting portion on its upper side; a fin plate is arranged at the bottom of the inner wall of the deflector portion, and the profile of the fin plate on the side away from the inner wall of the deflector portion is a curve.

[0007] The bottom of the inner wall of the baffle of the present invention is provided with a fin plate, and the fin plate has a wave-shaped profile. The fin plate can enhance the energy dissipation of the impact water flow, and at the same time play the role of reinforcing ribs, thereby enhancing the structural performance of the flow deflection device.

[0008] As a preferred solution of the present invention, the profile of the fin plate includes a convex section and a concave section, the convex section and the concave section have a smooth transition, and the shapes of the convex section and the concave section are both arc-shaped. The convex section and the concave section are combined to form a wavy profile.

[0009] As a preferred solution of the present invention, with the center of the concave section as the origin, the downward direction on the end surface of the baffle as the positive direction of the y-axis, and the direction perpendicular to the end surface of the baffle toward the side of the convex section as the positive direction of the x-axis, the profile of the fin plate satisfies the following fitting equation relationship:

[0010] y=-0.00005x 4 -0.0013x 3 -0.0385x 2 -0.1241x+24.008.

[0011] The deflector fin plate is a wave-shaped profile, which plays a role in enhancing energy dissipation and guiding water flow. The present invention can change the profile size by controlling parameters x and y.

[0012] As a preferred solution of the present invention, the diameter of the concave section is D, and the thickness of the fin plate is H=1 / 30 D. The present invention can adjust the thickness H of the fin plate according to the diameter D of the concave section to adapt to the design of flow deflection devices of different sizes.

[0013] As a preferred solution of the present invention, after the connecting portion is installed, the deflector portion is located between the nozzle and the water bucket, and the concave section is located on the side of the convex section close to the nozzle.

[0014] As a preferred solution of the present invention, when the end face of the deflector is placed vertically, the bottom of the deflector gradually tilts upward from the concave section to the convex section, thereby achieving the function of effectively guiding the water flow.

[0015] As a preferred solution of the present invention, the two side surfaces of the fin plate are smoothly transitioned to the top surface of the fin plate respectively.

[0016] As a preferred embodiment of the present invention, the connecting portion includes two connecting ears, the upper portion of the deflector is open, the two ends of the upper portion of the deflector are connected to the two connecting ears one by one, and a reinforcing plate is connected between the two ends of the upper portion of the deflector.

[0017] As a preferred solution of the present invention, a mounting hole is provided on the connecting ear.

[0018] As a preferred solution of the present invention, the deflector, the two connecting ears and the reinforcing plate are integrally formed.

[0019] The beneficial effects of the present invention are:

[0020] The bottom of the inner wall of the baffle of the present invention is provided with a fin plate, and the fin plate has a wave-shaped profile. The fin plate can enhance the energy dissipation of the impact water flow, and at the same time play the role of reinforcing ribs, thereby enhancing the structural performance of the flow deflection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 It is a coordinate schematic diagram of the present invention;

[0024] Figure 4 It is a schematic diagram of the fin plate profile fitting;

[0025] Figure 5It is the arrangement diagram of the present invention, the nozzle and the runner.

[0026] In the figure: 1-baffle; 2-connecting part; 3-fin plate; 4-nozzle; 5-runner; 6-bucket; 21-connecting ear; 22-mounting hole; 11-reinforcement plate; 31-convex section; 32-concave section. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0029] like Figure 1 to Figure 5 As shown, the deflection device with wavy fins in this embodiment includes a deflector 1, which is annular in shape and has a connecting portion 2 on the upper side of the deflector 1; a fin 3 is provided at the bottom of the inner wall of the deflector 1, and the profile of the fin 3 away from the inner wall of the deflector 1 is a curve.

[0030] The bottom of the inner wall of the baffle 1 of the present invention is provided with a fin plate 3, and the fin plate 3 has a wavy profile. The fin plate 3 can enhance the energy dissipation of the impact water flow, and at the same time play the role of reinforcing ribs, thereby enhancing the structural performance of the flow deflection device.

[0031] Specifically, the profile of the fin plate 3 includes a convex section 31 and a concave section 32, the convex section 31 and the concave section 32 are smoothly transitioned, and the shapes of the convex section 31 and the concave section 32 are both arc-shaped. The convex section 31 and the concave section 32 are combined to form a wavy profile.

[0032] With the center of the concave section 32 as the origin, the downward direction on the end surface of the baffle 1 as the positive direction of the y-axis, and the direction perpendicular to the end surface of the baffle 1 toward the side of the convex section 31 as the positive direction of the x-axis, the profile of the fin plate 3 satisfies the following fitting equation relationship:

[0033] y=-0.00005x 4 -0.0013x 3 -0.0385x2 -0.1241x+24.008.

[0034] The deflector fin plate 3 is a wave-shaped profile, which plays a role in enhancing energy dissipation and guiding water flow. The present invention can change the profile size by controlling parameters x and y.

[0035] Furthermore, the diameter of the concave section 32 is D, and the thickness of the fin plate 3 is H=1 / 30D. The present invention can adjust the thickness H of the fin plate 3 according to the diameter D of the concave section 32 to adapt to the design of flow deflection devices of different sizes.

[0036] After the connecting portion 2 is installed, the deflector portion 1 is located between the nozzle 4 and the water bucket 6 , and the concave section 32 is located on the side of the convex section 31 close to the nozzle 4 .

[0037] When the end surface of the baffle 1 is placed vertically, the bottom of the baffle 1 gradually tilts upward from the concave section 32 to the convex section 31, thereby achieving the function of effectively guiding the water flow.

[0038] The two side surfaces of the fin plate 3 are smoothly transitioned to the top surface of the fin plate 3 respectively.

[0039] Specifically, the connecting portion 2 includes two connecting ears 21, the upper portion of the deflector portion 1 is open, the two ends of the upper portion of the deflector portion 1 are connected to the two connecting ears 21 in a one-to-one correspondence, and a reinforcing plate 11 is connected between the two ends of the upper portion of the deflector portion 1.

[0040] The connecting ear 21 is provided with a mounting hole 22 .

[0041] The deflector 1, the two connecting ears 21 and the reinforcing plate 11 are integrally formed.

[0042] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A flow deflection device with a corrugated fin plate, characterized in that: The invention comprises a baffle (1) which is annular in shape and a connecting portion (2) is arranged on the upper side of the baffle (1); a fin plate (3) is arranged at the bottom of the inner wall of the baffle (1), and the profile of the fin plate (3) on the side away from the inner wall of the baffle (1) is a curve.

2. A flow deflection device with a corrugated fin plate according to claim 1, characterized in that: The profile of the fin plate (3) comprises a raised section (31) and a recessed section (32), the raised section (31) and the recessed section (32) are smoothly transitioned, and the shapes of the raised section (31) and the recessed section (32) are both arc-shaped.

3. A flow deflection device with a corrugated fin plate according to claim 2, characterized in that: With the center of the concave section (32) as the origin, the downward direction on the end surface of the baffle (1) as the positive direction of the y-axis, and the direction perpendicular to the end surface of the baffle (1) toward the side of the convex section (31) as the positive direction of the x-axis, the profile of the fin plate (3) satisfies the following fitting equation relationship: y=-0.00005x 4 -0.0013x 3 -0.0385x 2 -0.1241x+24.008。 4. A flow deflection device with a corrugated fin plate according to claim 1, characterized in that: The diameter dimension of the recessed section (32) is D, and the thickness dimension of the fin plate (3) is H=1 / 30D.

5. A flow deflection device with a corrugated fin plate according to claim 1, characterized in that: After the connecting portion (2) is installed, the deflector portion (1) is located between the nozzle (4) and the water bucket (6), and the recessed section (32) is located on the side of the raised section (31) close to the nozzle (4).

6. A flow deflection device with a corrugated fin plate according to claim 1, characterized in that: When the end face of the deflector (1) is placed vertically, the bottom of the deflector (1) gradually tilts upward from the recessed section (32) to the raised section (31).

7. A flow deflection device with a corrugated fin plate according to claim 1, characterized in that: The two side surfaces of the fin plate (3) are smoothly transitioned to the top surface of the fin plate (3).

8. A flow deflection device with a corrugated fin plate according to claim 1, characterized in that: The connecting portion (2) comprises two connecting ears (21), the upper portion of the baffle portion (1) is open, the two ends of the upper portion of the baffle portion (1) are connected to the two connecting ears (21) in a one-to-one correspondence, and a reinforcing plate (11) is connected between the two ends of the upper portion of the baffle portion (1).

9. A flow deflection device with a corrugated fin plate according to claim 8, characterized in that: The connecting ear (21) is provided with a mounting hole (22).

10. A flow deflection device with a corrugated fin plate according to claim 8, characterized in that: The deflector (1), the two connecting ears (21) and the reinforcing plate (11) are integrally formed.

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