Strip mine distributed underground reservoir power generation device and method

Abstract

The invention relates to the technical field of power generation devices, in particular to a strip mine distributed underground reservoir power generation device and method. The power generation device comprises a water tank set, the water tank set is composed of multiple layers of underground water tanks, and each layer of underground water tank is composed of at least two communicated underground water tanks. A flow guide pipe is communicated between every two adjacent layers of underground water tanks; the topmost underground water tank is communicated with an external water inlet flow guide pipe, a single underground water tank of the lowest underground water tank is communicated with a hydraulic turbine, the hydraulic turbine is communicated with a water outlet flow guide pipe, and the other end of the water outlet flow guide pipe is communicated with the topmost underground water tank; a water pump for pumping groundwater resources in the hydraulic turbine into the groundwater tank at the highest layer is loaded on the water outlet flow guide pipe; the hydraulic turbine is in transmission connection with an external power generation device; the power generation method is applied to the strip mine distributed underground reservoir power generation device. The problem that resources are wasted when underground water is treated in an existing mode is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation devices, and in particular to a distributed underground reservoir power generation device and method for an open-pit mine. Background Art

[0002] During the mining process of mineral resources in open-pit mines, the groundwater level often changes significantly due to changes in the surface and groundwater systems, resulting in the loss of water resources in the mining area and the deterioration of the geological environment of the mine; this will not only affect the normal production of the mine, but also have an adverse impact on the surrounding environment and ecosystem.

[0003] At present, the management of groundwater is mainly carried out by groundwater recharge and drainage; however, direct treatment of groundwater using the above methods often results in a waste of resources. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a distributed underground reservoir power generation device and method for an open-pit mine, which solves the problem of waste of resources caused by treating groundwater using existing methods.

[0005] In the first aspect, the present invention discloses a distributed underground water reservoir power generation device for an open-pit mine, including a water tank group, which is composed of multiple layers of underground water tanks, each layer of underground water tanks is composed of at least two connected underground water tanks; a diversion pipe is connected between two adjacent layers of underground water tanks; the highest layer of underground water tanks is connected to an external water inlet diversion pipe, and a single underground water tank of the lowest layer of underground water tanks is connected to a hydraulic turbine, the hydraulic turbine is connected to a water outlet diversion pipe, and the other end of the water outlet diversion pipe is connected to the highest layer of underground water tanks; the water outlet diversion pipe is loaded with a water pump for pumping groundwater resources in the hydraulic turbine into the highest layer of underground water tanks; the hydraulic turbine is used to be connected to an external power generation device in a transmission manner.

[0006] Optimally, the water tank group is composed of a first-layer underground water tank (1) and a second-layer underground water tank (3), and the first-layer underground water tank (1) or the second-layer underground water tank (3) is composed of two underground water tanks.

[0007] Specifically, the hydraulic turbine includes a water cylinder, which is composed of a hollow cylinder and cylinder covers on both sides of the hollow cylinder; the hydraulic turbine also includes a water wheel, which is composed of a hollow circular wheel body and a plurality of wheel blades distributed on the arc outer wall of the hollow circular wheel body; the water cylinder and the water wheel are coaxially arranged, and are coaxially connected to an external power generation device; the inlet of the water cylinder is connected to a water diversion pipe, and the water diversion pipe is connected to a corresponding underground water tank; the outlet of the water cylinder is connected to a water outlet diversion pipe.

[0008] Optimally, a plurality of auxiliary teeth are evenly arranged between two adjacent wheel blades on the arc outer wall of the hollow circular wheel body, and the length of each auxiliary tooth is equal to the length of the wheel blade.

[0009] Optimally, the ratio of the height of the wheel piece to the radius of the hollow circular wheel body is 1:100-1:50, the top surface of the wheel piece is an arc surface, and the arc surface is close to the inner wall surface of the water tank.

[0010] Optimally, the present invention also includes a water flow control mechanism, which is connected to the water diversion pipe of the hydraulic turbine, and is used to intercept, release or adjust the groundwater resources flowing through the water diversion pipe.

[0011] Optimally, a one-way valve and a protective net are arranged inside the diversion pipe, and the one-way valve restricts the groundwater resources from passing from the lower groundwater tank to the higher groundwater tank.

[0012] In a second aspect, the present invention further discloses a method for applying a distributed underground reservoir power generation device in an open-pit mine, and the specific steps are as follows: S1, using the pump body to transport the groundwater resources extracted from the mining operation to the first-layer groundwater tank through the external water inlet diversion pipe, and the groundwater resources in the first-layer groundwater tank flows into the second-layer groundwater tank through the diversion pipe; S2, the groundwater resources discharged from the second-layer underground water tank flow through the water flow control mechanism, the water diversion pipe and fall on the water wheel in the water tank. The wheel blades of the water wheel rotate under the impact of the water flow of the groundwater resources, so that the rotating water wheel drives the external generator to generate electricity; and the water flow control mechanism is used to adjust the flow of groundwater resources flowing through the water diversion pipe; S3, the groundwater resources in the water tank are pumped out by the water pump to the water outlet guide pipe and flow back to the first layer of water tank, and this step is repeated.

[0013] The beneficial effects of the present invention are: First, compared with the existing technology, the present invention can convert groundwater resources into electrical energy, which can not only effectively utilize the water resources in the mining area, but also realize green and low-carbon energy production, thus solving the problem of resource waste caused by using existing methods to treat groundwater.

[0014] Secondly, the present invention utilizes the gravitational potential energy generated by groundwater resources, so that the hydraulic turbine has strong power, small water consumption for work, and high mechanical efficiency.

[0015] Third, the underground water tanks are interconnected due to the existence of diversion pipes. When the water level of one of the underground water tanks exceeds the diversion hole, it can flow into other underground water tanks through the diversion pipe, thereby achieving reasonable and balanced allocation of water sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a longitudinal cross-sectional schematic diagram of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the hydraulic turbine 4.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the water flow control mechanism.

[0019] Figure 4 It is a schematic diagram of the local structure of the present invention.

[0020] In the figure, there are a first-layer underground water tank 1, a guide pipe 2, a one-way valve 21, a second-layer underground water tank 3, a hydraulic turbine 4, a wheel blade 41, a hollow circular wheel body 42, a secondary gear 43, a protective net 5, a water pump 6, an external water inlet guide pipe 7, a water outlet guide pipe 8, a hollow shell 9, a waterway 10, a push-pull rod 11, and a blocking plate 12. DETAILED DESCRIPTION

[0021] In order to clearly understand the technical solution of the present application, a distributed underground reservoir power generation device and method for an open-pit mine provided by the present application will be described in detail below in combination with specific embodiments and drawings.

[0022] The terms used in the following embodiments are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification and claims of the present application, the singular expressions "one", "a kind of", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context. It should also be understood that in the following embodiments of the present application, "at least one", "one or more" refer to one, two or more than two.

[0023] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0024] Embodiment 1: This embodiment provides a distributed underground reservoir power generation device for an open-pit mine, such as Figure 1As shown, it is a schematic longitudinal section diagram of the present invention, which includes a water tank group, which is composed of a first-layer underground water tank 1 and a second-layer underground water tank 3. In this embodiment, the first-layer underground water tank 1 or the second-layer underground water tank 3 is composed of two underground water tanks. Of course, in actual design, the number of underground water tanks contained in a single layer can also be set to other numbers, which will not be repeated here; the bottom of the underground water tank of the first-layer underground water tank 1 and the top of the underground water tank of the second-layer underground water tank 3 are respectively provided with diversion holes, and a diversion pipe 2 is provided between the first-layer underground water tank 1 and the second-layer underground water tank 3, and the two ends of the diversion pipe 2 are respectively connected to the adjacent side The diversion holes of the underground water tank trough on the upper and lower sides are connected; the first-layer underground water tank trough 1 is connected with an external water inlet diversion pipe 7, and the groundwater resources enter the first-layer underground water tank trough 1 through the external water inlet diversion pipe 7 (the groundwater resources come from the groundwater in the coal seam extracted during mining operations); the bottom of a single underground water tank trough of the second-layer underground water tank trough 3 is connected with a hydraulic turbine 4, and the hydraulic turbine 4 is connected with a water outlet diversion pipe 8, and the other end of the water outlet diversion pipe 8 is connected with the first-layer underground water tank trough 1; the water outlet diversion pipe is loaded with a water pump 6, and the water pump 6 is used to pump the groundwater resources in the hydraulic turbine 4 into the first-layer underground water tank trough 1. The specific structure of the hydraulic turbine 4 is as follows.

[0025] Combination Figure 1-2 ,in, Figure 2 The three-dimensional structure schematic diagram of the hydraulic turbine 4 is shown. It can be seen from the above two figures that the hydraulic turbine 4 includes a water cylinder, which is composed of a hollow cylinder and cylinder covers on both sides of the hollow cylinder. The cylinder and cylinder cover separation structure is used to facilitate the installation of the water wheel; during installation, the connection between the cylinder and the cylinder cover can be sealed by a sealing strip or a sealant to prevent the groundwater resources in the water cylinder from leaking out; the hydraulic turbine 4 also includes a water wheel, which is composed of a hollow circular wheel body 42 and a plurality of wheel blades 41 distributed on the arc outer wall of the hollow circular wheel body 42; the water cylinder and the water wheel are coaxially arranged, and the coaxial transmission is connected to an external power generation device (for example, a generator that can be purchased on the market is directly used, which will not be repeated here); the inlet of the water cylinder is connected to a water diversion pipe, and the water diversion pipe is connected to the corresponding underground water tank of the second-layer underground water tank 3; the outlet of the water cylinder is connected to a water outlet guide pipe 8, and the other end of the water outlet guide pipe 8 is connected to the first-layer underground water tank 1. The space formed by the water wheel in the water cylinder in the direction of water flow is the working cylinder, and the other space is the gliding cylinder. The working cylinder completes the working process by taking in water, doing work, and discharging water, while the gliding cylinder does not do work if water is not taken in.

[0026] The present invention combines the first-layer underground water tank 1, the second-layer underground water tank 3 and the hydraulic turbine 4. The groundwater resources entering the first-layer underground water tank 1 first flow into the second-layer underground water tank 3 through the diversion pipe 2; then, the groundwater resources in the second-layer underground water tank 3 enter the hydraulic turbine 4 in the form of free fall; finally, the groundwater resources in the hydraulic turbine 4 are returned to the first-layer underground water tank 1 by the water pump 6. Compared with the prior art, the present invention can convert groundwater resources into electrical energy, which can not only effectively utilize the water resources in the mining area, but also realize green and low-carbon energy production, thereby solving the problem of waste of resources caused by the existing method of treating groundwater. On the other hand, first, the present invention utilizes the gravitational potential energy generated by groundwater resources, so that the hydraulic turbine 4 has strong power, small water demand for work, and high mechanical efficiency. Second, the underground water tanks are interconnected due to the presence of the diversion pipe 2. When the water level of one of the underground water tanks exceeds the diversion hole, it can flow into other underground water tanks through the diversion pipe 2, thereby achieving reasonable and balanced allocation of water sources.

[0027] In order to improve the efficiency of converting the potential energy of groundwater resources into mechanical energy, it is necessary to ensure that the amount of water falling onto the wheel 41 is sufficient; for this purpose, the present invention further designs a water flow control mechanism, such as Figure 1 As shown in the figure, the water flow control mechanism is connected to the water diversion pipe of the hydraulic turbine 4, and the water flow control mechanism is used to intercept, release or adjust the groundwater resources flowing through the water diversion pipe; the specific structure of the water flow control mechanism is as follows.

[0028] refer to Figure 3 , which shows a schematic diagram of the three-dimensional structure of the water flow control mechanism. It can be seen from the figure that the water flow control mechanism is composed of a hollow shell 9 with a water channel and a push-pull unit in the hollow shell 9 that opens and closes the water channel 10, wherein the water channel is connected to the water diversion pipe; the push-pull unit is composed of a push-pull rod 11 and a plugging plate 12, and the push-pull rod 11 directly adopts a screw tightening structure; the plugging plate 12 is slidably connected in the hollow shell 9, and the plugging plate 12 can form a blocking fit with the water channel 10; the screw tightening structure is rotatably connected to the plugging plate 12, and the screw tightening structure forms a thread fit with the hollow shell 9. When the water flow control mechanism is in use, firstly rotate the push-pull rod 11, so that the plugging plate 12 moves and closes the water channel 10, so that the water in the water diversion pipe is stored; then, after the water is stored, the water flow control mechanism is used again to open the water channel, and a large amount of groundwater resources fall freely into the water cylinder to impact the wheel 41, driving the water wheel to rotate, so that the potential energy of the water is converted into mechanical energy, driving the external generator to generate electricity.

[0029] As an optimization solution of the present invention, Figure 1-2As shown in the figure, a one-way valve 21 and a protective net 5 are provided inside the diversion pipe 2. The one-way valve 21 is used to limit the flow of groundwater resources from the lower second-layer groundwater tank 3 to the higher first-layer groundwater tank 1. The protective net 5 is used to prevent debris and coal from clogging the diversion pipe 2, thereby keeping the diversion pipe 2 unobstructed.

[0030] As an optimization scheme of the present invention, refer to Figure 4 , which shows a partial structural schematic diagram of the present invention. It can be seen from the figure that when the water wheel is impacted by the water flow, the blade 41 performs work, while other parts of the adjacent blades 41 do not perform work, and also cause waste of water flow. Therefore, in order to increase the amount of work, multiple auxiliary teeth 43 are evenly arranged between two adjacent blades 41 on the arc outer wall of the hollow circular wheel body 42, and the length of each auxiliary tooth 43 is equal to the length of the blade 41. The kinetic energy of the multiple auxiliary teeth 43 when impacted by the water flow can additionally increase the mechanical efficiency of the water turbine.

[0031] Since the wheel blade 41 is subjected to a larger torque near the top, the work it generates is the largest; if the wheel blade 41 is too large, the work generated at the position with a smaller torque is too small, and the outflow of water will be increased, affecting the power generation efficiency. Therefore, as an optimization of the present invention, the ratio of the height of the wheel blade 41 to the radius of the hollow circular wheel body 42 is 1:100-1:50, and the top surface of the wheel blade 41 is an arc surface, and the arc surface is close to the inner wall of the water tank. The gap between the wheel blade 41 and the inner wall of the water tank is small, which will increase the water impact force and facilitate the work of the water wheel.

[0032] Embodiment 2: This embodiment also provides a method for applying to the above-mentioned open-pit mine distributed underground reservoir power generation device, and the specific steps of the method are as follows.

[0033] Step 1, using a pump body to transport the groundwater resources extracted from the mining operation to the first-layer groundwater tank 1 through the external water inlet diversion pipe 7, the groundwater resources in the first-layer groundwater tank 1 flow into the second-layer groundwater tank 3 through the diversion pipe 2; due to the presence of the one-way valve 21, the flow direction of the groundwater resources can only flow from the high-level first-layer groundwater tank 1 to the low-level second-layer groundwater tank 3; at the same time, when the groundwater resources flow through the diversion pipe 2, the protective net 5 in the diversion pipe 2 intercepts debris and gravel.

[0034] Step 2, the groundwater resources discharged from the second-layer groundwater tank 3 flow through the water flow control mechanism, the water diversion pipe and fall on the water wheel in the water tank in sequence, and the wheel blades 41 of the water wheel rotate under the impact of the water flow of the groundwater resources, so that the rotating water wheel drives the external generator to generate electricity; and the water flow control mechanism is used to adjust the flow of groundwater resources flowing through the water diversion pipe.

[0035] Step 3, the groundwater resources in the water tank are pumped out by the water pump 6 to the water outlet guide pipe 8 and flow back to the first layer water tank tank 1, and this step is repeated.

Claims

1. A distributed underground reservoir power generation device for an open-pit mine, characterized in that: The invention comprises a water tank group, which is composed of multiple layers of underground water tanks, each layer of underground water tanks being composed of at least two connected underground water tanks; a guide pipe (2) is provided between two adjacent layers of underground water tanks; the uppermost layer of underground water tanks is connected to an external water inlet guide pipe (7); a single underground water tank of the lowermost layer of underground water tanks is connected to a hydraulic turbine (4); the hydraulic turbine (4) is connected to a water outlet guide pipe (8); the other end of the water outlet guide pipe (8) is connected to the uppermost layer of underground water tanks; the water outlet guide pipe is equipped with a water pump (6) for pumping underground water resources in the hydraulic turbine (4) into the uppermost layer of underground water tanks; the hydraulic turbine (4) is used for transmission connection with an external power generation device.

2. The distributed underground reservoir power generation device for open-pit mines according to claim 1, characterized in that: The water tank group is composed of a first-layer underground water tank (1) and a second-layer underground water tank (3). The first-layer underground water tank (1) or the second-layer underground water tank (3) is composed of two underground water tanks.

3. The distributed underground reservoir power generation device for open-pit mines according to claim 2, characterized in that: The hydraulic turbine (4) comprises a water cylinder, which is composed of a hollow cylinder and cylinder covers on both sides of the hollow cylinder; the hydraulic turbine (4) also comprises a water wheel, which is composed of a hollow circular wheel body (42) and a plurality of wheel blades (41) distributed on the arc outer wall of the hollow circular wheel body (42); the water cylinder and the water wheel are coaxially arranged and coaxially connected to an external power generation device; the inlet of the water cylinder is connected to a water diversion pipe, which is connected to a corresponding underground water tank; the outlet of the water cylinder is connected to a water outlet guide pipe (8).

4. The distributed underground reservoir power generation device for open-pit mines according to claim 3, characterized in that: A plurality of auxiliary teeth (43) are evenly arranged between two adjacent wheel blades (41) on the arc outer wall of the hollow circular wheel body (42), and the length of each auxiliary tooth (43) is equal to the length of the wheel blade (41).

5. The distributed underground reservoir power generation device for open-pit mines according to claim 3, characterized in that: The ratio of the height of the wheel piece (41) to the radius of the hollow circular wheel body (42) is 1:100-1:50, and the top end surface of the wheel piece (41) is an arc surface, and the arc surface is close to the inner wall surface of the water tank.

6. The distributed underground reservoir power generation device for open-pit mines according to claim 3, characterized in that: It also includes a water flow control mechanism, which is connected to the water diversion pipe of the hydraulic turbine (4) and is used to intercept, release or adjust the groundwater resources flowing through the water diversion pipe.

7. The distributed underground reservoir power generation device for an open-pit mine according to claim 1, characterized in that: A one-way valve (21) and a protective net (5) are provided inside the diversion pipe (2). The one-way valve (21) restricts the flow of groundwater resources from a lower groundwater tank to a higher groundwater tank.

8. A distributed underground reservoir power generation method for an open-pit mine, characterized in that: The distributed underground reservoir power generation device for an open-pit mine applied to any one of claims 2 to 3 comprises the following specific steps: S1, using a pump body to transport groundwater resources extracted from mining operations to a first-layer groundwater tank (1) through an external water inlet diversion pipe (7), and the groundwater resources in the first-layer groundwater tank (1) flow into a second-layer groundwater tank (3) through a diversion pipe (2); S2, the groundwater resources discharged from the second-layer groundwater tank (3) flow through the water flow control mechanism and the water diversion pipe in sequence and fall on the water wheel in the water tank, and the wheel blades (41) of the water wheel rotate under the impact of the water flow of the groundwater resources, so that the rotating water wheel drives the external generator to generate electricity; and the water flow control mechanism is used to adjust the flow of the groundwater resources flowing through the water diversion pipe; S3, the groundwater resources in the water tank are pumped out by the water pump (6) to the water outlet guide pipe (8) and flow back to the first layer of water tank (1), and this step is repeated.

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