MB-type impeller with high wave energy capturing performance and MB-type impeller set

Abstract

The utility model discloses an MB type impeller, in particular to an MB type impeller with high wave energy capturing performance and an MB type impeller set. The MB type impeller comprises two blades, each blade is composed of a first part with the section being a large inferior arc section, a second part with the section being a straight line section and a third part with the section being a small inferior arc section, and the circle center of the section of the large inferior arc section of the first part and the circle center of the section of the small inferior arc section of the third part are located on the same side of the second part. And two cover plates, wherein the third part of each blade is opposite to the second part of the other blade, and a channel for water flow to pass through is formed between the two blades. The technical problem of improving the wave energy capturing performance of the MB type impeller is solved, in the structural design, the force and torque which are borne by the blades with the concave faces facing the flow and drive the MB type impeller to rotate can act on the blades with the convex faces facing the flow again in the same rotating direction, and then the wave energy capturing performance (efficiency) is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of MB impellers, in particular to a kind of MB impeller with high wave energy capture performance, and a kind of MB impeller group. BACKGROUND

[0002] Savonius impeller is a resistance type impeller, with simple structure, good starting characteristics, relatively low running speed, and can withstand any direction of flow.

[0003] Savonius impeller is mainly composed of two blades with set curvature value, one convex surface flows, one concave surface flows. Its working principle is based on the resistance difference between the two blades. In the process of water turbine rotation, the two blades of Savonius impeller are affected by force and torque at the same time, due to different structural characteristics, the driving force of the concave surface flow blade is greater than the resistance of the convex surface flow blade, and the torque difference generated by the two forces drives the rotation of Savonius impeller.

[0004] The main types of Savonius impeller include traditional S type impeller (Semicircular type), B type impeller (Benesh type), MB type impeller (Modified benesh type), E type impeller (Elliptical type) and ME type impeller (Modified elliptical type). And the preliminary study shows that in the working condition of marine ranching, the shape performance of MB type impeller is better.

[0005] However, the shape of the existing MB type impeller still has technical deficiencies, that is, in the actual use process of MB type impeller, the force and torque driving the rotation of the concave surface flow blade cannot act on the convex surface flow blade again in the same rotation direction, obviously the utilization rate of wave energy can be improved.

[0006] Therefore, the utility model is proposed. SUMMARY

[0007] An object of the utility model is to provide a kind of MB type impeller with high wave energy capture performance. The MB type impeller of the structure design can act on the convex surface flow blade again in the same rotation direction in the actual use process of the concave surface flow blade, thereby improving the wave energy capture performance (efficiency).

[0008] Another object of the utility model is to provide a kind of MB type impeller group with high wave energy capture performance, to realize the improvement of wave energy capture efficiency in unit time and multi-directional capture of wave energy, and further improve the wave energy capture performance.

[0009] In order to achieve the above object, the utility model discloses a kind of MB impeller with high wave energy capture performance, its structure includes:

[0010] Two blades, in the curvature continuation direction of each blade, it is sequentially composed of the first portion with large inferior arc section, the second portion with straight line section and the third portion with small inferior arc section, and the center of the large inferior arc section of the first portion and the small inferior arc section of the third portion is located at the same side of the second portion;

[0011] And two cover plates;

[0012] Among them, two blades are centrally located between two cover plates, and the convex surface of one blade is towards flow, and the concave surface of the other blade is towards flow;

[0013] Two blades are staggered, and the third portion of each blade is opposite the second portion of the other blade, and a channel is formed between the two blades for water flow.

[0014] Compared with prior art, the channel formed between the two blades in the structural design of the utility model provided MB impeller can realize, in actual use process, the force and torque that the concave surface of the blade is driven MB impeller rotation is in the same rotation direction can be re-acted on the convex surface of the blade, to improve the wave energy capture performance (efficiency) of MB impeller.

[0015] In addition, the utility model discloses an MB impeller group, which comprises two or more MB impellers as described above;All MB impellers are arranged in a stacked manner on the same straight line.

[0016] The above-mentioned MB impeller group can improve the wave energy capture efficiency per unit time by combining multiple MB impellers.

[0017] Further, the above-mentioned MB impeller group is preferably arranged with the blades of each adjacent group of MB impellers being cross-staggered.

[0018] The above-mentioned preferred technical solution can realize multi-directional capture of wave energy.

[0019] Further, the above-mentioned MB impeller group is preferably arranged with the cover plates of each adjacent group of MB impellers being shared.

[0020] The above-mentioned more preferred technical solution can simplify the structure of the MB impeller group, reduce the amount of materials used by the MB impeller group under the premise of ensuring the wave energy capture performance of the MB impeller group, and thus reduce the manufacturing cost.

[0021] Compared with the prior art, the MB type impeller with high wave energy capturing performance and the MB type impeller set have the following technical effects:

[0022] The channel formed between the two blades in the structural design of the MB type impeller can realize that, in actual use, the force and the torque driving the MB type impeller to rotate, which are borne by the concave-to-flow blade, can act on the convex-to-flow blade again in the same rotation direction, thereby improving the wave energy capturing performance (efficiency) of the MB type impeller.

[0023] The MB type impeller set can realize multi-directional capturing of wave energy and can improve the wave energy capturing efficiency per unit time. Meanwhile, the structure of the MB type impeller set is simplified, the consumption material amount of the MB type impeller set is reduced under the premise of ensuring the wave energy capturing performance of the MB type impeller set, and the manufacturing cost is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the MB type impeller;

[0025] Figure 2 is Figure 1 is a sectional view of A-A in figure

[0026] Figure 3 is a flow field schematic view of the MB type impeller;

[0027] Figure 4 is a structural schematic view of the first MB type impeller set;

[0028] Figure 5 is a structural schematic view of the second MB type impeller set;

[0029] Figure 6 is a structural schematic view of the third MB type impeller set.

[0030] In the drawing: blade 1, first part 1-1, second part 1-2, third part 1-3, cover plate 2, channel 3. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0032] For example, Figure 1 and Figure 2As shown, in one embodiment of this utility model, the MB-type impeller with high wave energy capture performance provided in this embodiment includes the following structure:

[0033] Two blades 1, in the direction of curvature continuation of each blade 1, are each composed of a first part 1-1 with a large minor arc segment cross section, a second part 1-2 with a straight line segment cross section, and a third part 1-3 with a small minor arc segment cross section, and the center of the large minor arc segment cross section of the first part 1-1 and the center of the small minor arc segment cross section of the third part 1-3 are located on the same side of the second part 1-2.

[0034] And, two cover plates 2;

[0035] Among them, two blades 1 are located in the middle between two cover plates 2, with the convex surface of one blade 1 facing the flow and the concave surface of the other blade 1 facing the flow;

[0036] The two blades 1 are staggered, with the third part 1-3 of each blade 1 facing the second part 1-2 of the other blade 1, and a channel 3 is formed between the two blades 1 for water to flow through.

[0037] In the above-mentioned MB-type impeller structural design, the channel 3 formed between the two blades 1 can achieve the following in actual use: Figure 3 As shown, the force and torque that drive the MB-type impeller to rotate, which are applied to the concave-facing blade 1, can act again on the convex-facing blade 1 in the same rotational direction, thereby improving the wave energy capture performance (efficiency) of the MB-type impeller.

[0038] Meanwhile, this embodiment provides an MB-type impeller assembly, such as... Figure 4 As shown, its structure includes two MB-type impellers as described above; all MB-type impellers are stacked on the same straight line, and the blades 1 of the two MB-type impellers are arranged in a cross-shaped pattern.

[0039] The aforementioned MB-type impeller assembly improves wave energy capture efficiency per unit time by combining multiple MB-type impellers. Simultaneously, it enables multi-directional wave energy capture.

[0040] Of course, the number of MB-type impellers in the above-mentioned MB-type impeller assembly can be determined according to the actual working conditions and construction requirements in the sea area. The specific number can be three, five, eight, etc. For example, as a second embodiment of this utility model, the structure of the MB-type impeller in this embodiment is completely consistent with the first embodiment described above. Figure 5 As shown, however, in the structure of the MB type impeller group provided in this embodiment, the number of MB type impellers is three, and the blades 1 of each adjacent set of MB type impellers are arranged in a cross-shaped pattern.

[0041] In addition, in order to simplify the structure of the MB impeller set, reduce the consumption of the MB impeller set under the premise of ensuring the wave energy capture performance of the MB impeller set, and further reduce the manufacturing cost, the cover plates 2 between each adjacent group of MB impellers in the structure design of the MB impeller set can be shared with each other. For example, as a third embodiment of the utility model, as shown in the figure, the number of MB impellers in the structure of the MB impeller set provided in the embodiment is also two, which is compared with the first embodiment, and the difference is that the cover plates 2 between the two MB impellers in the embodiment are shared with each other. Figure 6

[0042] The utility model is not limited to the above best embodiment, and anyone can derive other various forms of products under the inspiration of the utility model, but regardless of any change in shape or structure, any technical solution with the same or similar to the present application falls within the protection scope of the utility model.​

Claims

1. An MB-type impeller with high wave energy capture performance, characterized in that: include: The two blades, in the direction of curvature continuity of each blade, are each composed of a first part with a large minor arc segment, a second part with a straight line segment, and a third part with a small minor arc segment, and the center of the large minor arc segment section of the first part and the center of the small minor arc segment section of the third part are located on the same side of the second part. And, two cover plates; Two blades are positioned in the center between two cover plates, with the convex surface of one blade facing the flow and the concave surface of the other blade facing the flow. The two blades are staggered, with the third part of each blade facing the second part of the other blade, forming a channel between the two blades for water to flow through.

2. An MB-type impeller assembly, characterized in that: It includes two or more MB-type impellers as described in claim 1 above; all MB-type impellers are arranged in a stacked manner on the same straight line.

3. The MB-type impeller assembly according to claim 2, characterized in that: The blades of each adjacent set of MB-type impellers are arranged in a cross pattern.

4. An MB-type impeller assembly according to claim 2 or 3, characterized in that: The cover plates between each adjacent set of MB-type impellers are shared.

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