CN205895479U - Hydraulic turbine water installations - Google Patents

Abstract

The utility model discloses a hydraulic turbine water installations, which comprises a housin, the inside bearing that is equipped with of casing, bearing swing joint has the blade wheel, open in casing left side has water inlet and delivery port, and the water inlet is located the top of delivery port, the water inlet right side is equipped with filter equipment, filter equipment includes the organism, rivers import and water flow outlet have been opened respectively to the lateral wall about the organism, inside first filter and the second filter installed in proper order of organism, surface mounting has high speed motor on the organism, high speed motor is connected with the transmission shaft, the one end of transmission shaft stretches into the inside of organism, the surface of transmission shaft is equipped with the blade, the delivery port right side is equipped with back -flow preventer, the side surface at the plate body is opened to the through -hole, the axis of rotation is pegged graft at the inner chamber of through -hole, axis of rotation skin weld has integrated into one piece's spoiler. The device simple structure, and the practicality is strong.

Description

A water turbine water inlet device

technical field

The utility model relates to the technical field of water turbines, in particular to a water inlet device for water turbines.

Background technique

A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy, and it belongs to the turbomachinery in fluid machinery. As early as around 100 BC, the prototype of the water turbine appeared in China - the water wheel, which was used to lift irrigation and drive grain processing equipment. Most modern water turbines are installed in hydropower stations to drive generators to generate electricity. In a hydropower station, the water in the upstream reservoir is led to the turbine through the diversion pipe, which drives the turbine runner to rotate and drives the generator to generate electricity. The water that has done work is discharged downstream through the tail water pipe. The higher the water head and the greater the flow, the greater the output power of the turbine. Water turbines and auxiliary machines are important hydropower equipment and an indispensable part of the hydropower industry. They are important equipment for making full use of clean and renewable energy to achieve energy conservation, emission reduction, and environmental pollution reduction. Their technological development is comparable to the development scale of my country's hydropower industry. adapt. Under the strong pull of my country's electricity demand, my country's water turbine and auxiliary equipment manufacturing industry has entered a period of rapid development, its economic scale and technical level have been significantly improved, and my country's water turbine manufacturing technology has reached the world's advanced level. According to the working principle, water turbines can be divided into two categories: impact turbines and counteraction turbines. The runner of the impact turbine is impacted by the water flow and rotates, and the pressure of the water flow remains unchanged during the working process, mainly due to the conversion of kinetic energy; the runner of the impact turbine is rotated by the reaction force of the water flow, and the pressure of the water flow during the working process Both energy and kinetic energy are changed, but mainly the conversion of pressure energy. When the water flow of the early impact turbine impacts the blades, the kinetic energy loss is very large, and the efficiency is not high. And because the water inlet device does not have a filtration system, the impurities in the water will damage the blades of the water turbine under the impact of high-speed water flow, and even break the blades of the water turbine, causing relatively large losses.

Utility model content

The purpose of this utility model is to provide a water turbine water inlet device to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a water turbine water inlet device, including a housing, the housing is provided with a bearing inside, the bearing is movably connected with a blade wheel, and the left side of the housing is opened A water inlet and a water outlet, and the water inlet is located above the water outlet, a filter device is provided on the right side of the water inlet, the filter device includes a body, and the left and right side walls of the body are respectively provided with a water flow inlet and a water flow outlet. A first filter plate and a second filter plate are sequentially installed inside the body, and the second filter plate is located on the right side of the first filter plate, and one end of the first filter plate and the second filter plate protrudes from the surface of the body, and the body A high-speed motor is installed on the upper surface, and the high-speed motor is connected with a transmission shaft, one end of the transmission shaft extends into the body, blades are provided on the surface of the transmission shaft, and an anti-backflow device is provided on the right side of the water outlet. The anti-reflux device includes a plate body, a rotating shaft and a through hole, the through hole is opened on the side surface of the plate body, the rotating shaft is inserted into the inner cavity of the through hole, and the surface of the rotating shaft is welded with an integrally formed spoiler.

Preferably, the blades are paddle-type blades, and there are no less than 6 groups of blades.

Preferably, the first filter plate and the second filter plate are clamped in the inner cavity of the body, and the diameter of the filter hole of the first filter plate is 0.8 times the diameter of the filter hole of the second filter plate.

Preferably, the spoiler is high-frequency welded on the surface of the rotating shaft.

Compared with the prior art, the beneficial effect of the utility model is that the water inlet device of the water turbine can greatly reduce the impurities in the water after being filtered by the filter system, and protect the blades of the water turbine from damage, and the agitator in the filter device can make the flow rate of the water flow faster. When it is enlarged, jet flow can be formed on the blades of the water turbine when passing through the water outlet, so as to speed up the operation of the blades and improve the efficiency. The arrangement of the anti-backflow device can prevent the water in the water turbine from flowing back into the water inlet device, and prevent the blade wheels in the water inlet device from reversing to affect the water flow velocity.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the utility model filtering device structural representation;

Fig. 3 is a structural schematic diagram of the anti-reflux device of the present invention.

In the figure: 1 water inlet, 2 water outlet, 3 filter device, 31 body, 32 water flow inlet, 33 water flow outlet, 34 first filter plate, 35 second filter plate, 36 high-speed motor, 37 drive shaft, 38 blade, 4 Blade wheel, 5 bearings, 6 backflow prevention devices, 61 through holes, 62 rotating shafts, 63 spoilers, 64 plate bodies, 7 housings.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-3, the utility model provides a technical solution: a water turbine water inlet device, including a housing 7, a bearing 5 is arranged inside the housing 7, and the bearing 5 is movably connected to the blade wheel 4, and the left side of the housing 7 is There are water inlet 1 and water outlet 2 on the side, and the water inlet 1 is located above the water outlet 2, and the right side of the water inlet 1 is provided with a filter device 3, and the filter device 3 includes a body 31, and the left and right side walls of the body 31 are respectively provided with water flow inlets 32 and the water outlet 33, the first filter plate 34 and the second filter plate 35 are installed in sequence in the body 1, and the second filter plate 35 is located on the right side of the first filter plate 34, the first filter plate 34 and the second filter plate 35 One end of one end stretches out the surface of body 31, and high-speed motor 36 is installed on the upper surface of body 31, and high-speed motor 36 is connected with transmission shaft 37, and one end of transmission shaft 37 stretches into the inside of body 31, and the surface of transmission shaft 37 is provided with blade 38, The right side of the water outlet 2 is provided with an anti-backflow device 6, the anti-backflow device 6 includes a plate body 64, a rotating shaft 62 and a through hole 61, the through hole 61 is opened on the side surface of the plate body 64, and the rotating shaft 62 is inserted into the through hole 61 The inner cavity of the rotating shaft 62 is welded with an integrally formed spoiler 63. The blades 38 are paddle blades, and the blades 38 are not less than 6 groups. The first filter plate 34 and the second filter plate 35 are clamped in the inner cavity of the body 31 , and the diameter of the filter hole of the first filter plate 34 is 0.8 times the diameter of the filter hole of the second filter plate 35 . The spoiler 63 is high-frequency welded on the surface of the rotating shaft 62 .

Working principle: When the water flow enters the housing 7 from the water inlet 1, it is filtered by the first filter plate 34 and the second filter plate 35 to remove impurities in the water to ensure the safety of the turbine blades 38, and then passes through the high-speed The transmission shaft 37 driven by the motor 36 accelerates the water flow. When the water flow passes through the blade wheel 4, it pushes the blade wheel 4 to rotate at a high speed. The water flow has a higher flow velocity, which can push the spoiler 63, and then the water flow can flow out of the water outlet 2, and push the blade 38 of the water turbine. , will close the water outlet 2 to prevent the water in the turbine from flowing back into the water inlet device.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (4)

1. A water turbine water inlet device, comprising a housing (7), is characterized in that: the housing (7) is internally provided with a bearing (5), and the bearing (5) is movably connected with a blade wheel (4), The housing (7) has a water inlet (1) and a water outlet (2) on the left side, and the water inlet (1) is located above the water outlet (2), and the right side of the water inlet (1) is provided with a filter device (3), the filter device (3) includes a body (31), the left and right side walls of the body (31) are respectively provided with a water flow inlet (32) and a water flow outlet (33), and the inside of the body (1) is sequentially The first filter plate (34) and the second filter plate (35) are installed, and the second filter plate (35) is positioned at the right side of the first filter plate (34), the first filter plate (34) and the second filter plate One end of the plate (35) protrudes from the surface of the body (31), and a high-speed motor (36) is installed on the upper surface of the body (31), and the high-speed motor (36) is connected with a transmission shaft (37), and the transmission shaft One end of (37) extends into the inside of the body (31), the surface of the transmission shaft (37) is provided with blades (38), and the right side of the water outlet (2) is provided with an anti-backflow device (6), the The backflow prevention device (6) comprises a plate body (64), a rotating shaft (62) and a through hole (61), the through hole (61) is opened on the side surface of the plate body (64), and the rotating shaft (62) Inserted in the inner cavity of the through hole (61), the surface of the rotating shaft (62) is welded with an integrally formed spoiler (63). 2. A water turbine water inlet device according to claim 1, characterized in that: the blades (38) are paddle-type blades, and the blades (38) are not less than 6 groups. 3. A water turbine water inlet device according to claim 1, characterized in that: the first filter plate (34) and the second filter plate (35) are clamped in the inner cavity of the machine body (31), and the second filter plate (34) The filter hole diameter of the first filter plate (34) is 0.8 times of the filter hole diameter of the second filter plate (35). 4. A water inlet device for a water turbine according to claim 1, characterized in that: the spoiler (63) is high-frequency welded on the surface of the rotating shaft (62).