Mine gushing water power generation device

Abstract

A mine gushing water power generation device comprises a cofferdam and a drainage pipeline and further comprises a swirler. An inlet of the swirler is formed in a lower outlet of the drainage pipeline, a light medium outlet of the swirler is connected with the pipeline A, and a heavy medium outlet of the swirler is connected with the pipeline B; a reaction type hydroelectric generator is installed at a lower outlet of the pipeline A, and a pulse type hydroelectric generator is installed at a lower outlet of the pipeline B. According to the mine gushing water power generation device, water flow containing sludge and disintegrating stones is introduced into the pulse type hydroelectric generator for power generation through separation of the hydrocyclone, water flow not containing sludge and disintegrating stones is introduced into the reaction type hydroelectric generator for power generation, on one hand, water energy is fully utilized, on the other hand, the turbine is prevented from being abraded and damaged too fast, and the service life of the mine gushing water power generation device is prolonged. And the maintenance cost of the power generation device is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of mining, in particular to a mine water gushing power generation device. Background Art

[0002] During the mining process, shallow surface water will flow into the mine tunnels. The water output of these gushing water is large and stable. In order to ensure the normal mining, these gushing water must be discharged either out of the well or into the water storage tank underground. If it is discharged out of the well, it will consume electricity; if it is discharged underground, there will be a waste of water energy. In order to utilize water energy, our mine has built cofferdams, drainage pipes and hydraulic turbine generators underground to generate electricity using the potential energy of the gushing water.

[0003] There are two types of hydraulic generators, one is the pulse type and the other is the reaction type. The pulse type is a type in which fluid is ejected through a nozzle at high speed into a spoon-shaped impeller, which then drives the generator to generate electricity. The reaction type fluid flows through the turbine blades and uses the water level pressure to drive the generator to generate electricity. At present, my mine uses the Kaplan reaction hydraulic turbine generator. After using it for a period of time, it was found that the generator has the following problems: Due to the limitation of the underground space, the cofferdam cannot be built very high, and the water inlet of the drainage pipe is close to the bottom of the cofferdam. Even if a filter is set at the water inlet of the drainage pipe, the water flow will still bring up the sludge and debris at the bottom of the cofferdam when it is discharged, forming a mud flow. The turbine of the reaction hydraulic turbine generator has a complex shape of blades and is relatively thin, which is easy to wear under the scouring of the mud flow. More importantly, the gap between the turbine and the vortex flow channel is very small. If there are debris in the water flow, it is easy to cause the turbine to get stuck and damaged.

[0004] The turbine is the core component of the reaction hydraulic turbine generator, and the turbine blades are manufactured as one piece with the wheel body. After wear and damage, they can only be replaced as a whole, resulting in excessively high maintenance costs for the power generation device. Utility Model Content

[0005] In order to overcome the shortcomings of the background technology, the utility model discloses a mine water inrush power generation device. The mine water inrush power generation device adopts the following technical solutions:

[0006] A mine water inrush power generation device comprises a cofferdam and a drainage pipe, and also comprises a cyclone; the inlet of the cyclone is installed on the lower outlet of the drainage pipe, the light medium flow outlet of the cyclone is connected to the pipe A, and the heavy medium flow outlet of the cyclone is connected to the pipe B; a reaction type hydroelectric generator is installed at the lower outlet of the pipe A, and a pulse type hydroelectric generator is installed at the lower outlet of the pipe B.

[0007] To further improve the technical solution, a vortex flow passage is provided at the lower outlet of the pipeline A, and a turbine of a reaction type hydroelectric generator is installed in the vortex flow passage.

[0008] To further improve the technical solution, a nozzle is provided at the lower outlet of the pipe B, and the nozzle is directed toward the impeller of the pulse-type hydroelectric generator.

[0009] To further improve the technical solution, the impeller consists of a wheel body and blades, the blades are spoon-shaped, and the blades are detachably connected to the wheel body.

[0010] To further improve the technical solution, the reaction-type hydroelectric generator and the pulse-type hydroelectric generator are installed in a chassis, and a drainage trough is provided at the bottom of the chassis.

[0011] To further improve the technical solution, the drop of the drainage pipe is 5-7 meters.

[0012] After implementing the above technical solution, compared with the background technology, the beneficial effects produced by the utility model are:

[0013] This mine water-gushing power generation device introduces the water flow containing sludge and crushed stone into the pulse-type hydroelectric generator for power generation through the separation of the cyclone, and introduces the water flow without sludge and crushed stone into the reaction-type hydroelectric generator for power generation. On the one hand, the water energy is fully utilized, and on the other hand, excessive wear and damage of the turbine is avoided, which greatly reduces the maintenance cost of the power generation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 Shown is a side view of the mine water inrush power generation device.

[0015] Attached Figure 2 Shown is a front view of the mine water-gushing power generation device.

[0016] In the attached figure: 1. cofferdam; 2. drain pipe; 3. cyclone; 31. light medium flow outlet; 32. heavy medium flow outlet; 4. pipe A; 5. vortex flow channel; 6. turbine; 7. pipe B; 8. nozzle; 9. impeller; 10. generator. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. It should be noted that in the description of the present invention, the terms "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0018] As attached Figure 1 As shown, a mine water inrush power generation device comprises a cofferdam 1, a water discharge pipe 2, a cyclone 3, a pipe A4, a pipe B7, a reaction type hydroelectric generator and a pulse type hydroelectric generator. The structure and function thereof are described in detail below.

[0019] Refer to the attached Figure 1 and attached Figure 2 . A cofferdam 1 is set in the tunnel underground. Due to the limited height of the tunnel, the height of the cofferdam 1 is only 3.7 meters. The water level in the cofferdam 1 is about 2.8 meters, and the outside of the cofferdam 1 is a vertical shaft. A drainage pipe 2 is set on the cofferdam 1, and the drop of the drainage pipe 2 is 5-7 meters. Since the water inlet of the drainage pipe 2 is close to the bottom of the cofferdam 1, even if a filter screen is set at the water inlet of the drainage pipe 2, the water flow will still bring up the sludge and debris at the bottom of the cofferdam 1 when it is discharged, forming a mud flow.

[0020] The inlet of the cyclone 3 is installed on the lower outlet of the drain pipe 2, the light medium outlet 31 of the cyclone 3 is connected to the pipe A4, and the heavy medium outlet 32 ​​of the cyclone 3 is connected to the pipe B7.

[0021] The cyclone 3 is a common separation and classification equipment. After the mixed liquid enters the cyclone 3 from the tangential direction of the cyclone 3 at a certain speed, a strong three-dimensional elliptical strong rotational shear turbulent motion is generated. Under the action of centrifugal force, centripetal buoyancy and fluid drag, the lighter liquid medium flows out from the light medium outlet 31 upward, and the heavier liquid medium flows out from the heavy medium outlet 32 ​​upward.

[0022] For this power generation device, the drop of the drainage pipe 2 is 5-7 meters, the mud flow enters the cyclone 3 at a relatively high initial velocity, the heavier mud such as sludge, crushed stone, etc. flows out from the heavy medium flow outlet 32 ​​and enters the pipe B7; the lighter water flows out from the light medium flow outlet 31 and enters the pipe A4. In this way, the water flow entering the pipe A4 will not carry sludge and crushed stone.

[0023] A reaction-type hydroelectric generator is installed at the lower outlet of pipeline A4. Specifically, a vortex flow channel 5 is provided at the lower outlet of pipeline A4, and a turbine 6 is installed in the vortex flow channel 5, and the turbine 6 is connected to the generator 10 through a connecting shaft. When generating electricity, the water flows out from the lower outlet of pipeline A4 at a high speed. After the water flows into the vortex flow channel 5, the vortex flow channel 5 can cause the water flow to produce a spiral flow, drive the turbine 6 to rotate, and then drive the generator 10 to generate electricity. The blades of turbine 6 are easy to wear, and more importantly, the gap between turbine 6 and vortex flow channel 5 is very small. If there are debris in the water flow, it is easy to cause turbine 6 to get stuck and damaged. Since the water flow entering pipeline A4 will not carry sludge and debris, the wear of the water flow on the blades of turbine 6 is greatly reduced, and the service life of the blades of turbine 6 is extended.

[0024] A pulse type hydroelectric generator is installed at the lower outlet of the pipeline B7. The impeller 9 of the pulse type hydroelectric generator is composed of a wheel body and blades, and the blades are spoon-shaped. In this embodiment, a nozzle 8 with a gradually decreasing cross-sectional area is provided at the lower outlet of the pipeline B7, and the nozzle 8 faces the impeller 9 of the pulse type hydroelectric generator. The mud flows out of the lower outlet of the pipeline B7 at a high speed, and after being further accelerated by the nozzle 8, it hits the impeller 9 at a higher speed, pushing the impeller 9 to rotate, and then driving the generator 10 to generate electricity.

[0025] For a reaction-type hydroelectric generator, the gap between the turbine 6 and the vortex flow channel 5 must be set very small, which can easily cause the turbine 6 to get stuck and damaged. For a pulse-type hydroelectric generator, since there is no flow channel restriction, even if the mud contains debris, it will not cause the impeller 9 to get stuck and damaged, but will only accelerate the wear of the spoon-shaped blades. In order to facilitate the replacement of the blades, the spoon-shaped blades are detachably connected to the wheel body by bolts. Compared with the turbine 6 blades, the cost of replacing the spoon-shaped blades is very low.

[0026] Since the mud contains sludge and crushed stones, and has a higher specific gravity than water, the driving force of the mud on the impeller 9 is greater than the driving force of water on the impeller 9, thereby increasing the power generation.

[0027] In order to facilitate installation and management, the reaction type hydraulic generator and the pulse type hydraulic generator are installed in a chassis, and a drainage groove is provided at the bottom of the chassis.

[0028] From the above, it can be seen that the mine water-gushing power generation device introduces the water flow containing sludge and crushed stone into the pulse type hydroelectric generator for power generation through the separation of the cyclone 3, and introduces the water flow without sludge and crushed stone into the reaction type hydroelectric generator for power generation. Firstly, the water energy is fully utilized, and secondly, the turbine 6 is prevented from being worn and damaged too quickly, thereby greatly reducing the maintenance cost of the power generation device.

[0029] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A mine water inrush power generation device, comprising a cofferdam and a drainage pipe, characterized in that: It also includes a cyclone; the inlet of the cyclone is installed on the lower outlet of the drainage pipe, the light medium flow outlet of the cyclone is connected to the pipe A, and the heavy medium flow outlet of the cyclone is connected to the pipe B; a reaction type hydraulic generator is installed at the lower outlet of the pipe A, and a pulse type hydraulic generator is installed at the lower outlet of the pipe B.

2. A mine water inrush power generation device as claimed in claim 1, characterized in that: A vortex flow passage is provided at the lower outlet of the pipeline A, and a turbine of a reaction type hydraulic generator is installed in the vortex flow passage.

3. A mine water inrush power generation device as claimed in claim 1, characterized in that: A nozzle is provided at the lower outlet of the pipe B, and the nozzle faces the impeller of the pulse type hydroelectric generator.

4. A mine water inrush power generation device as claimed in claim 3, characterized in that: The impeller consists of a wheel body and blades. The blades are spoon-shaped and are detachably connected to the wheel body.

5. A mine water inrush power generation device as claimed in claim 1, characterized in that: The reaction type hydraulic generator and the pulse type hydraulic generator are installed in a casing, and a drainage groove is arranged at the bottom of the casing.

6. A mine water inrush power generation device as claimed in claim 1, characterized in that: The drop of the drainage pipe is 5-7 meters.

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