Blade for hydraulic generator

Abstract

The utility model discloses a blade for a hydro-generator, which comprises an impeller, and an inner bearing is mounted on the inner side of the impeller; the blade bodies are arranged on the outer side of the impeller at equal angles; the connecting assembly is arranged between the impeller and the blade body; the buffer assembly is mounted on the outer side of the blade body; wherein the blade body can be mounted on the outer side of an impeller through the connecting assembly; through the buffer assembly, water flow can be prevented from directly impacting the blade body, the connecting assembly comprises positioning grooves, and the positioning grooves are formed in the inner side of the impeller at equal angles. According to the blade for the hydro-generator, when the blade body needs to be replaced, the upper clamping rod and the lower clamping rod are manually pulled, so that the tail ends of the clamping rods are separated from the clamping grooves in the inner sides of the positioning blocks, after separation, the positioning blocks are in a movable state, at the moment, the positioning blocks can be taken out from the inner sides of the positioning grooves, and the damaged blade body is pulled away from an impeller.

Description

Technical Field

[0001] The utility model relates to the technical field of blades, in particular to a blade for a hydro-generator. Background Art

[0002] A hydro-turbine generator is a generator that converts water energy into electrical energy. It is the main power equipment for hydropower stations to produce electricity. The blades used in hydro-turbine generators are key components in the turbine. Their main function is to convert the kinetic energy of the water flow into mechanical energy, thereby driving the generator to generate electricity.

[0003] The application number is HYPERLINK "https: / / patents.qizhidao.com / search / result?from='advance&resultForm='%E8%AF%A6%E6%83%85'&statement=AN:"CN201921056215.X"" CN201921056215.X is a hollow blade water wheel, comprising a volute, a water wheel hub, and a fixed shaft, the volute is fixed on a base, the lower end of the fixed shaft is mounted in the volute and fixed on the base, the water wheel hub is sleeved on the fixed shaft and mounted on the volute, the water wheel hub rotates around the fixed shaft, the outer circumference of the water wheel hub is evenly distributed with hollow blades, the outer ends of the hollow blades are installed with nozzles, the water inlet of the volute, the inner cavity of the volute, the inner cavity of the water wheel hub, the inner cavity of the hollow blades, and the nozzle form a water flow channel.

[0004] The device adopts a hollow blade structure, so that the inner cavity of the hollow blade serves as part of the water flow channel and is not affected by the length of the hollow blade. Therefore, the blade length can be extended to increase the diameter of the water wheel, thereby improving the power generation efficiency. However, the device does not have a structure that is convenient for replacing the blades. The service life of the hollow blades is short and they are easily damaged by the impact of water flow. Therefore, damaged blades need to be replaced regularly. If the blades are not easy to replace, it will not only consume manpower but also reduce the power generation efficiency of the hydro-generator.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original blade structure of the hydro-generator. Utility Model Content

[0006] The purpose of the present utility model is to provide a blade for a hydro-turbine generator, so as to solve the problem that the device proposed in the above background technology does not have a structure for facilitating the replacement of the blades, the hollow blades have a short service life, and are easily damaged by the impact of water flow, so the damaged blades need to be replaced regularly. If the blades are not easy to replace, it will not only consume manpower but also reduce the power generation efficiency of the hydro-turbine generator.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a blade for a hydro-generator, comprising an impeller, an inner bearing being installed on the inner side of the impeller; a blade body, the blade body being arranged at equal angles on the outer side of the impeller; a connecting assembly, the connecting assembly being arranged between the impeller and the blade body; a buffer assembly, the buffer assembly being installed on the outer side of the blade body; wherein, the blade body can be installed on the outer side of the impeller through the connecting assembly; and the buffer assembly can prevent water flow from directly impacting the blade body.

[0008] Preferably, the connecting assembly includes positioning grooves, and the positioning grooves are opened at equal angles on the inner side of the impeller.

[0009] Preferably, the connecting assembly further comprises a positioning block and a slot, the positioning block is snap-connected to the inner side of the positioning slot, and slots are provided on the upper and lower sides of the positioning block, and the outer side of the positioning block is fixedly connected to the blade body.

[0010] Preferably, the blade body is shaped like an inclined plate when viewed from the side.

[0011] Preferably, the connecting assembly also includes a telescopic spring and a clamping rod, the telescopic spring is fixedly connected to the outside of the impeller, and the tail end of the telescopic spring is fixedly connected to the clamping rod, the clamping rod passes through the inside of the impeller, and the tail end of the clamping rod is clamped and connected to the inside of the slot.

[0012] Preferably, the buffer assembly includes a buffer plate, which is arranged on the outside of the blade body, and the buffer plate has the same outer dimensions as the blade body.

[0013] Preferably, the buffer assembly further comprises a sliding rod, the sliding rod is slidably connected to the inner side of the blade body, and the tail end of the sliding rod is connected to the buffer plate.

[0014] Preferably, the buffer assembly further includes a buffer spring, and two ends of the buffer spring are respectively connected to the blade body and the buffer plate.

[0015] Compared with the prior art, the beneficial effect of the present invention is that the blade for the hydro-generator is provided with:

[0016] 1. The structure is convenient for replacing blades. When the blade body needs to be replaced, the upper and lower sets of clamping rods are manually pulled to separate the tail end of the clamping rod from the clamping slot inside the positioning block. After separation, the positioning block is in an active state. At this time, the positioning block can be removed from the inner side of the positioning slot and the damaged blade body can be pulled out of the impeller;

[0017] Furthermore, after the damaged blade body is taken out, the positioning block of the replacement blade body is engaged in the corresponding slot. After the engagement is completed, the clamping rod is released, and the clamping rod is reset by the elastic force of the telescopic spring, so that the tail ends of the upper and lower sets of clamping rods are engaged in the corresponding slots. Through the engagement of the tail ends of the clamping rods with the slots, the replaced blade body is fixed to the outer side of the impeller, thereby achieving the effect of quickly replacing the blade body;

[0018] 2. Buffer structure. This structure sets a buffer plate on the outside of the blade body. When water flows towards the impeller, the impacting water flow will first contact the buffer plate on the outside of the blade body. After the buffer plate is impacted, it will squeeze the buffer spring and move toward the blade body. The elastic force of the buffer spring will buffer the impact force of the water flow, thereby avoiding damage to the blade body caused by excessive impact force of the water flow, which will affect the service life of the blade body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the utility model when viewed from above;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the impeller of the utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the buffer component of the utility model;

[0023] Figure 5 For this utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0024] In the figure: 1. impeller; 2. inner bearing; 3. connecting assembly; 301. positioning groove; 302. positioning block; 303. clamping slot; 304. telescopic spring; 305. clamping rod; 4. blade body; 5. buffer assembly; 501. buffer plate; 502. sliding rod; 503. buffer spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 5 The utility model provides a technical solution: a blade for a hydro-generator, comprising:

[0027] Example 1: Figure 1-Figure 3 、 Figure 5 The technical solution shown in the figure, the utility model provides a technical solution: a blade for a hydro-generator, which discloses: an impeller 1, an inner bearing 2 is installed on the inner side of the impeller 1; a blade body 4, the blade body 4 is arranged at an equal angle on the outer side of the impeller 1; a connecting assembly 3, the connecting assembly 3 is arranged between the impeller 1 and the blade body 4; a buffer assembly 5, the buffer assembly 5 is installed on the outer side of the blade body 4; wherein, the blade body 4 can be installed on the outer side of the impeller 1 through the connecting assembly 3; the buffer assembly 5 can prevent water flow from directly impacting the blade body 4;

[0028] The connecting assembly 3 includes a positioning groove 301, which is provided at an equal angle on the inner side of the impeller 1; the connecting assembly 3 also includes a positioning block 302 and a clamping groove 303, the positioning block 302 is clamped and connected to the inner side of the positioning groove 301, and the clamping groove 303 is provided on the upper and lower sides of the positioning block 302, and the outer side of the positioning block 302 is fixedly connected to the blade body 4; the blade body 4 is viewed from the side as an inclined plate; the connecting assembly 3 also includes a telescopic spring 304 and a clamping rod 305, the telescopic spring 304 is fixedly connected to the outer side of the impeller 1, and the tail end of the telescopic spring 304 is fixedly connected to the clamping rod 305, the clamping rod 305 passes through the inner side of the impeller 1, and the tail end of the clamping rod 305 is clamped and connected to the inner side of the clamping groove 303;

[0029] When the blade body 4 needs to be replaced, the upper and lower groups of clamping rods 305 are manually pulled to separate the tail ends of the clamping rod 305 from the clamping slot 303 inside the positioning block 302. After separation, the positioning block 302 is in an active state. At this time, the positioning block 302 can be taken out from the inner side of the positioning slot 301, and the damaged blade body 4 can be pulled out of the impeller 1. When the damaged blade body 4 is taken out, the positioning block 302 of the replacement blade body 4 is engaged in the corresponding clamping slot 303. After the engagement is completed, the clamping rod 305 is released, and the clamping rod 305 is reset by the elastic force of the telescopic spring 304, so that the tail ends of the upper and lower groups of clamping rods 305 are engaged in the corresponding clamping slot 303. Through the engagement of the tail ends of the clamping rod 305 and the clamping slot 303, the replaced blade body 4 is fixed to the outside of the impeller 1, achieving the effect of quickly replacing the blade body 4.

[0030] Example 2: Figure 1-Figure 2 、 Figure 4The technical solution shown in the figure, the utility model provides a technical solution: a blade for a hydro-generator, which discloses: a buffer assembly 5 includes a buffer plate 501, which is arranged on the outside of the blade body 4 and has the same outer dimensions as the blade body 4; the buffer assembly 5 also includes a sliding rod 502, which is slidably connected to the inside of the blade body 4, and the tail end of the sliding rod 502 is connected to the buffer plate 501; the buffer assembly 5 also includes a buffer spring 503, and the two ends of the buffer spring 503 are respectively connected to the blade body 4 and the buffer plate 501;

[0031] This structure is achieved by setting the buffer plate 501 on the outside of the blade body 4. When water flows towards the impeller 1, the impacting water flow will first contact the buffer plate 501 on the outside of the blade body 4. After the buffer plate 501 is impacted, it will squeeze the buffer spring 503 and move toward the blade body 4, thereby buffering the impact force of the water flow through the elastic force of the buffer spring 503, avoiding damage to the blade body 4 caused by excessive impact force of the water flow, thereby affecting the service life of the blade body 4.

[0032] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blade for a hydro-generator, characterized in that: Includes: An impeller (1), wherein an inner bearing (2) is mounted on the inner side of the impeller (1); A blade body (4), the blade body (4) being arranged at an equal angle on the outside of the impeller (1); A connecting assembly (3), the connecting assembly (3) being arranged between the impeller (1) and the blade body (4); A buffer assembly (5), the buffer assembly (5) being mounted on the outside of the blade body (4); wherein, The blade body (4) can be mounted on the outside of the impeller (1) through the connecting assembly (3); The buffer assembly (5) can prevent the water flow from directly impacting the blade body (4).

2. A blade for a hydro-generator according to claim 1, characterized in that: The connecting assembly (3) comprises a positioning groove (301), and the positioning groove (301) is opened at an equal angle on the inner side of the impeller (1).

3. The blade for a hydro-generator according to claim 2, characterized in that: The connecting assembly (3) further comprises a positioning block (302) and a clamping slot (303); the positioning block (302) is clamped and connected to the inner side of the positioning slot (301); the clamping slots (303) are provided on the upper and lower sides of the positioning block (302); and the outer side of the positioning block (302) is fixedly connected to the blade body (4).

4. A blade for a hydro-generator according to claim 3, characterized in that: The blade body (4) is shaped like an inclined plate when viewed from the side.

5. The blade for a hydro-generator according to claim 3, characterized in that: The connecting assembly (3) further comprises a telescopic spring (304) and a clamping rod (305), wherein the telescopic spring (304) is fixedly connected to the outside of the impeller (1), and the clamping rod (305) is fixedly connected to the tail end of the telescopic spring (304), and the clamping rod (305) passes through the inside of the impeller (1), and the tail end of the clamping rod (305) is clamped and connected to the inside of the clamping slot (303).

6. The blade for a hydro-generator according to claim 1, characterized in that: The buffer assembly (5) comprises a buffer plate (501), the buffer plate (501) being arranged outside the blade body (4), and the buffer plate (501) and the blade body (4) have the same outer dimensions.

7. The blade for a hydro-generator according to claim 6, characterized in that: The buffer assembly (5) further comprises a sliding rod (502), wherein the sliding rod (502) is slidably connected to the inner side of the blade body (4), and the tail end of the sliding rod (502) is connected to the buffer plate (501).

8. The blade for a hydro-generator according to claim 7, characterized in that: The buffer assembly (5) further comprises a buffer spring (503), with two ends of the buffer spring (503) respectively connected to the blade body (4) and the buffer plate (501).

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