CN108915924A - A kind of self-contained bulb tubular hydraulic generating set - Google Patents

Abstract

The present invention relates to a kind of integrated bulb tubular hydroelectric generating set, which includes a casing, a turbine runner, a generator and a spiral bevel gear transmission mechanism. The turbine runner is coaxially installed in the shell, and the generator is fixedly installed at the upper end of the middle part of the casing through the generator base. The axial direction of the generator and the turbine runner is perpendicular, and a spiral bevel gear is installed between the generator and the turbine runner. transmission mechanism. This generator set effectively combines the conventional bulb tubular turbine with special gear transmission, and makes full use of the variable speed and steering principle of the spiral bevel gear, and transfers the generator inside the conventional turbine to the water inlet of the turbine after gear speed-up and steering. The top of the seat ring not only solves the problem that the diameter of the water turbine of the small unit is too small and the internal space is insufficient, so that the normal installation and maintenance of the generator cannot be carried out, but also increases the speed of the generator.

Description

An integral bulb tubular hydroelectric generator set

technical field

The invention belongs to the field of hydroelectric generators, in particular to a tubular hydroelectric generator set with integrated bulbs.

Background technique

Ordinary bulb tubular units have a larger diameter, and the generators are installed inside the tubular seat of the turbine. However, when the diameter of the water turbine is less than 2.5m and the internal space of the water turbine is small, the installation and maintenance of the generator are very difficult. At present, other low-efficiency hydro-generator sets are generally selected, but high-efficiency bulb tubular units cannot be selected, and the production cost is high.

Contents of the invention

The object of the present invention is to overcome the disadvantages of the prior art, and provide an integrated bulb tubular hydroelectric generating set with reasonable structure, improved efficiency, easy installation and easy maintenance.

The present invention solves its technical problem and realizes by taking the following technical solutions:

A kind of integrated bulb tubular hydroelectric generator set, characterized in that it includes a casing, a water turbine runner, a generator and a spiral bevel gear transmission mechanism, the main body of the casing of the water turbine is an axially horizontal cylindrical structure, The turbine runner is coaxially installed in the casing, and the generator is fixedly installed at the upper end of the casing through the generator base. The generator is perpendicular to the axis of the turbine runner, and a spiral umbrella is installed between the generator and the turbine runner. Gear transmission mechanism.

Moreover, the spiral bevel gear transmission mechanism includes an engine shaft, a driven bevel gear, a driving bevel gear and a water turbine shaft. The water turbine shaft is installed in the casing through bearings at both ends of the axial direction, and the water turbine runner is coaxially installed at one end of the water turbine shaft. , the other end of the turbine shaft is coaxially equipped with a driving bevel gear, the driving bevel gear meshes to drive a driven bevel gear, the driven bevel gear is installed at the lower end of the generator shaft, and the generator shaft is vertically installed in the casing through bearings , the upper end of the generator shaft is coaxially connected to the generator.

Moreover, a flywheel is coaxially installed on the upper part of the generator shaft, and a brake is installed on the outer periphery of the flywheel.

Moreover, a water diversion pipe interface is formed at one end of the casing in the horizontal direction, and a draft pipe connection is formed at the other end of the casing in the horizontal direction, and the diameter of the water diversion pipe connection is larger than that of the draft pipe connection.

Moreover, the water diversion pipe interface is coaxially sealed and connected to the water diversion pipe, and the water diversion pipe is installed with a water diversion pipe gate valve; the draft pipe interface is coaxially sealed and connected to the draft water pipe.

Moreover, two footings are formed on the lower end of the housing, and the footings are supported on the foundation pier.

Advantage and positive effect of the present invention are:

1. This generator set effectively combines the conventional bulb tubular turbine with special gear transmission, and makes full use of the variable speed and steering principle of the spiral bevel gear, and transfers the generator inside the conventional turbine to the hydraulic turbine after gear speed-up and steering. The top of the water inlet seat ring not only solves the problem that the diameter of the water turbine of the small unit is too small and the internal space is insufficient, and the normal installation and maintenance of the generator cannot be carried out, but also increases the speed of the generator and greatly reduces the production cost of the generator.

2. The entire unit section of the present invention can be adjusted on the installation and maintenance platform, hoisted into the foundation pit as a whole, and connected with the flanges of the water inlet pipeline and the drainage pipeline at the front and rear, realizing a truly complete unit and reducing the difficulty of installation and debugging .

3. This generator set is suitable for thermal power, chemical industry, steel and other pressure pipelines with surplus energy, and can be used in remote areas with a drop of 2 to 25 meters and no high-voltage power grid.

Description of drawings

Figure 1 is the assembly part of the bulb tubular hydroelectric generator set;

Fig. 2 is the spiral bevel gear transmission mechanism in Fig. 1;

Figure 3 is a schematic diagram of the installation of the bulb tubular hydroelectric generator set.

Reference signs: 1 generator, 2 flywheel, 3 brake, 4 spiral bevel gear transmission mechanism, 5 casing, 6 draft pipe interface, 7 water diversion pipe interface, 8 water diversion pipe gate valve, 9 water diversion pipe, 10 draft water pipe, 11 foundation buttress;

4-1 engine shaft, 4-2 driven bevel gear, 4-3 driving bevel gear, 4-4 bearing, 4-5 water turbine shaft, 4-6 water turbine runner.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

An integrated bulb tubular hydroelectric generating set, including a casing 5, a hydroturbine runner 4-6, a generator 1, and a spiral bevel gear transmission mechanism 4. This embodiment is described in the direction shown in Figure 1. As shown in the figure, the main body of the casing of the water turbine is an axially horizontal cylindrical structure. One end of the horizontal axis of the casing 5 is formed with a water diversion pipe interface 7, and the other end of the horizontal axis of the casing is formed with a draft tube interface 6. The diameter of the diversion pipe interface is larger than that of the draft pipe interface, and the turbine runners 4-6 are coaxially installed in the casing;

A generator 1 is fixedly mounted on the upper end of the middle part of the casing through the generator base, and the axial direction of the generator and the runner of the water turbine is perpendicular. From the existing straight line connection to the vertical arrangement connection;

See accompanying drawing 2 for the specific structure: the spiral bevel gear transmission mechanism includes engine shaft 4-1, driven bevel gear 4-2, driving bevel gear 4-3 and water turbine shaft 4-5, and the water turbine shaft passes through bearings at both ends of the axial direction 4-4 Installed in the casing, the turbine runner is coaxially installed at one end of the turbine shaft, and a driving bevel gear is coaxially installed at the other end of the turbine shaft, and the driving bevel gear meshes to drive a driven bevel gear. The gear is installed at the lower end of the generator shaft, and the generator shaft is vertically installed in the casing through the bearing, and the upper end of the generator shaft is coaxially connected with the generator; the runner of the water turbine rotates under the drive of the water flow, and through the connection between the driving bevel gear and the driven bevel gear Steering to drive the generator to work;

In order to meet the requirements of the moment of inertia of the unit, a flywheel 2 is coaxially installed on the upper part of the generator shaft, and a brake 3 is installed on the casing around the flywheel. The brake cooperates with the flywheel to form a braking system, and the brake is remotely connected to a computer for monitoring and control.

The unit can be hoisted as a whole, which is convenient for maintenance work.

Refer to the installation schematic diagram of the unit shown in Figure 3, the water diversion pipe interface 7 is coaxially sealed and connected to the water diversion pipe 9, and the water diversion pipe is equipped with a water diversion pipe gate valve 8; the draft pipe interface is coaxially sealed and connected to the draft water pipe 10; Footing, the footing is supported on the foundation pier 11, and the lower end of the draft tube is also shaped on the footing and is supported on another foundation pier.

Although the embodiments and drawings of the present invention are disclosed for the purpose of illustration, those skilled in the art can understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims Therefore, the scope of the present invention is not limited to what is disclosed in the embodiments and drawings.

Claims (6)

1. a kind of self-contained bulb tubular hydraulic generating set, it is characterised in that：Including casing, rotary wheel of water turbine, generator with And spiral bevel gear wheel drive mechanism, the main body of the casing of the hydraulic turbine are an axial horizontal tubular construction, are co-axially mounted in casing There is rotary wheel of water turbine, upper end is fixed with generator, the axis of generator and rotary wheel of water turbine by generator base in the middle part of casing To vertical, spiral bevel gear wheel drive mechanism is installed between generator and rotary wheel of water turbine.

2. self-contained bulb tubular hydraulic generating set according to claim 1, it is characterised in that：The spiral bevel gear Transmission mechanism includes engine shaft, driven bevel pinion, driving bevel gear and turbine shaft, and turbine shaft passes through axial ends axis It holds and is mounted in casing, be co-axially mounted rotary wheel of water turbine in one end of turbine shaft, the other end of turbine shaft is coaxially installed with One driving bevel gear, driving bevel gear engagement one driven bevel pinion of driving, the driven bevel pinion are mounted on generator shaft lower end, Generator shaft is vertically installed in casing by bearing, the coaxially connected generator in generator shaft upper end.

3. self-contained bulb tubular hydraulic generating set according to claim 1, it is characterised in that：On the generator shaft Portion is coaxially installed with flywheel, is equipped with brake on the casing of flywheel periphery.

4. self-contained bulb tubular hydraulic generating set according to claim 1, it is characterised in that：The level of the casing Axial one end is formed with diversion interface tube, and the horizontal axis other end of casing is formed with tail water interface tube, and diversion interface tube diameter is greater than Tail water interface tube.

5. self-contained bulb tubular hydraulic generating set according to claim 4, it is characterised in that：The diversion interface tube Co-axial seal connects aqueduct, and aqueduct is equipped with diversion sluice valve；Tail water interface tube co-axial seal connects draft tube.

6. self-contained bulb tubular hydraulic generating set according to claim 1, it is characterised in that：The shell lower end system There are two footing, footing is supported on basic buttress.