Siphon type circulating hydroelectric generation system

Abstract

The utility model discloses a siphoning type circulating hydroelectric generation system which comprises a reservoir, a closed water storage tank, a siphon and power generation equipment. The closed water storage tank is higher than the reservoir, the siphon is connected between the reservoir and the closed water storage tank, and the power generation equipment is arranged above the reservoir and below the closed water storage tank; a water drain pipe of the closed water storage tank faces the power generation equipment, and potential energy of water is converted into electric energy by the power generation equipment; the water replenishing and pressurizing assembly comprises a water replenishing and pressurizing pipe connected between the reservoir and the closed water storage tank, a hydraulic ram arranged on the water replenishing and pressurizing pipe and a floating ball valve arranged at the water outlet end of the water replenishing and pressurizing pipe; and the hydraulic ram is lower than the reservoir. The water level condition in the closed water storage tank can be automatically monitored, water can be automatically supplemented in time to maintain the negative pressure in the closed water storage tank to be stable, the hidden danger that the negative pressure suddenly changes in the operation process is eliminated, a good circulation system can be formed, and stable operation of power generation equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to energy storage power generation equipment, in particular to a siphon type circulating water power generation system. Background Art

[0002] The Chinese invention patent with application publication number CN103790758A discloses an improved siphon circulation hydroelectric power generation device, which includes a water storage tank, a siphon pipe, a buffer water tank and a generator, wherein the water storage tank is placed above the buffer water tank, the siphon pipe is an inclined pipe connected between the water storage tank and the buffer water tank, there is a water inlet pipe at the bottom of the water storage tank connected to the generator, there is a water supply pipe between the water storage tank and the buffer water tank, and a pump and a gate valve are installed at the lower end of the water supply pipe. The water supply pipe and pump are used when the water storage tank is first filled with water. The device uses the siphon phenomenon to lift water from the buffer water tank to the water storage tank for energy storage, and then impacts the generator downward, and the generator converts the potential energy of the water into electrical energy. The device has the following problems in practical applications:

[0003] During operation, the negative pressure in the water tank fluctuates greatly due to factors such as equipment sealing and ambient temperature. It is easy for the water inflow to be less than the water outflow in the water tank. After a period of time, the water outflow will decrease, which will be insufficient to support the normal operation of the generator. Although the device is equipped with a water supply pipe and a pump, there is no water level monitoring measure to observe whether the water level in the water tank has dropped. When it is found, there is almost no water in the water tank, causing the generator to stop running. Subsequently, a long period of water replenishment and pressurization is required to re-establish a negative pressure environment in the water tank, affecting the power generation efficiency. Utility Model Content

[0004] The utility model provides a siphon type circulating hydroelectric power generation system, which can maintain the negative pressure in the water storage tank stable for a long time and ensure the stable operation of the power generation equipment.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows: a siphon-type circulating hydroelectric power generation system, comprising a water reservoir, a closed water storage tank, a siphon pipe and a power generation device; the closed water storage tank is higher than the water reservoir, the siphon pipe is connected between the water reservoir and the closed water storage tank, and the power generation device is arranged above the water reservoir and below the closed water storage tank; the drain pipe of the closed water storage tank faces the power generation device, and the power generation device converts the potential energy of water into electrical energy; and also includes a water replenishment and boosting assembly, which includes a water replenishment and boosting pipe connected between the water reservoir and the closed water storage tank, a water hammer pump arranged on the water replenishment and boosting pipe, and a float valve arranged at the water outlet end of the water replenishment and boosting pipe;

[0006] The ram pump is below the water reservoir.

[0007] As a limitation of the present utility model, the water replenishment and boosting assembly also includes a water pump provided on the water replenishment and boosting pipe, the water pump being connected in parallel with the water hammer pump;

[0008] Ball valves are provided on the water hammer pump branch and the water pump branch of the water supply and booster pipe.

[0009] As a further limitation of the present invention, both the siphon pipe and the drain pipe are provided with ball valves.

[0010] As another limitation of the present invention, the power generation equipment includes a hydro-turbine generator set and a turbine generator set; wherein the water inlet position of the hydro-turbine generator set is arranged below the drain pipe, and the water discharge position of the hydro-turbine generator set is arranged above the water inlet position of the turbine generator set; and the water discharge position of the turbine generator set is arranged above the water reservoir.

[0011] As a further limitation of the present utility model, the top of the water reservoir is open, and filter screens are provided at the water inlet ends of the siphon tube and the water replenishment and boosting pipe in the water reservoir.

[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0013] (1) The utility model is an improvement on the siphon type hydroelectric power generation system. The improvement mainly lies in that a water replenishment and pressure boosting assembly consisting of a water replenishment and pressure boosting pipe, a water hammer pump and a float valve is added to the system, which can automatically monitor the water level in the closed water storage tank and can automatically replenish water in time to maintain the negative pressure in the closed water storage tank stable, eliminating the hidden danger of sudden changes in negative pressure during operation, and can form a good circulation system to ensure the stable operation of the power generation equipment, thereby ensuring the power generation efficiency.

[0014] Among them, the water hammer pump uses the energy generated when the flowing water is suddenly braked to raise part of the water pressure to a certain height. Compared with the water pump that consumes electricity, this structure can reduce the operating cost of the system and is more energy-saving and environmentally friendly.

[0015] (2) The utility model also adds a water pump branch in the water replenishment and pressure boosting component, which can assist the water hammer pump to replenish water and increase the pressure in the closed water storage tank, thereby improving the reliability of the system.

[0016] (3) The power generation equipment of the utility model includes a water turbine generator set and a turbine generator set. The water turbine generator set is arranged at the top and uses the water discharged from the drain pipe of the closed water storage tank to generate electricity. It is a primary power generation equipment; the turbine generator set is arranged at the bottom and uses the water discharged from the water turbine generator set to generate electricity. It is a secondary power generation equipment. This structure can fully utilize the potential energy of the water discharged from the closed water storage tank.

[0017] (4) The water storage tank in the utility model is an open structure and can be further utilized as an aquaculture pond; the filter screens arranged at the water inlet ends of the siphon tube and the water supply booster pipe can filter out debris in the water to avoid pipe blockage.

[0018] In summary, the utility model, as a non-powered clean power generation system, is suitable for promotion and application in small and medium-sized enterprises or rural areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a structural layout diagram of Example 1 of the utility model (the arrows in the figure indicate the direction of water flow);

[0021] Figure 2 This is a structural layout diagram of Embodiment 2 of the present utility model (the arrows in the diagram indicate the direction of water flow);

[0022] In the figure: 1. Water reservoir; 2. Closed water storage tank; 3. Siphon; 4. Drain pipe; 5. Hydro-turbine generator set; 6. Water supply and booster pipe; 7. Water hammer pump; 8. Float valve; 9. Ball valve; 10. Water pump; 11. Turbine generator set. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention, and are not used to limit the present invention.

[0024] Example 1 A siphon-type circulating hydroelectric power generation system

[0025] This embodiment utilizes the siphon phenomenon to lift water from the water reservoir 1 to the closed water storage tank 2 for energy storage, and then utilizes the height difference to convert the potential energy of the water into electrical energy through the power generation equipment.

[0026] like Figure 1As shown, this embodiment includes a water reservoir 1, a closed water storage tank 2, a siphon 3, a power generation device and a water replenishment and boosting assembly. The water reservoir 1 is an open pool built on the ground. In addition to storing water, it can also be further used for aquaculture. The bottom of the water reservoir 1 is provided with at least one water outlet for draining water outward. In this embodiment, two water outlets are provided at the bottom of the water reservoir 1 (respectively connected to the siphon 3 and the water replenishment and boosting assembly), and a filter screen is fixed at each water outlet. The closed water storage tank 2 is erected above the water reservoir 1 and is higher than the water reservoir 1 as a whole. The bottom of the closed water storage tank 2 is provided with a drain pipe 4, and the top is provided with a manhole and at least one water inlet. In this embodiment, the top of the closed water storage tank 2 is provided with two water inlets (respectively connected to the siphon 3 and the water replenishment and boosting assembly). The siphon 3 is connected between the water reservoir 1 and the closed water storage tank 2 so that water can be lifted from the water reservoir 1 to the closed water storage tank 2 by the siphon phenomenon. The power generation equipment is arranged above the water reservoir 1 and below the closed water tank 2, and can generate electricity using the water discharged from the drain pipe 4 of the closed water tank 2. The water replenishment and pressurization assembly is connected between the water reservoir 1 and the closed water tank 2, and is used to automatically replenish water in time to maintain the negative pressure in the closed water tank 2 stable.

[0027] Furthermore, the power generation equipment adopts the hydro-turbine generator set 5 in the prior art, wherein the water connection position of the hydro-turbine generator set 5 is arranged below the drain pipe 4, and the drain position of the hydro-turbine generator set 5 is arranged above the water storage tank 1. The water replenishment and boosting assembly includes a water replenishment and boosting pipe 6, a water hammer pump 7 and a float valve 8, wherein one end of the water replenishment and boosting pipe 6 is connected to the water outlet of the water storage tank 1, and the other end is connected to the water inlet of the closed water storage tank 2; the water hammer pump 7 is arranged on the water replenishment and boosting pipe 6, and the overall height is lower than the water storage tank 1; the float valve 8 is arranged at the water outlet end of the water replenishment and boosting pipe 6, and can monitor the water level in the closed water storage tank 2. When the water level drops, the float valve 8 opens to replenish water into the closed water storage tank 2 through the water replenishment and boosting pipe 6 and the water hammer pump 7.

[0028] In this embodiment, ball valves 9 are provided on the drain pipe 4 , the siphon pipe 3 and the water replenishment and pressurization pipe 6 of the closed water storage tank 2 .

[0029] When using this embodiment, it is first necessary to establish a stable negative pressure in the closed water storage tank 2, that is, when all ball valves 9 are closed, more than four-fifths of water is injected into the closed water storage tank 2 through the manhole by using a water pump or other means, and the manhole is sealed; then all ball valves 9 are opened, and the water in the closed water storage tank 2 flows into the water reservoir 1 after impacting the hydro-generator set 5 through the drain pipe 4. As the water level in the closed water storage tank 2 drops, a negative pressure is formed in the closed water storage tank 2. Under the action of the negative pressure, a siphon phenomenon occurs, and the water in the water reservoir 1 flows into the closed water storage tank 2 through the siphon pipe 3. The water inflow and water outflow of the closed water storage tank 2 are basically equal, so that the hydro-generator set 5 can be continuously used for power generation.

[0030] When, affected by the ambient temperature, the water outflow in the closed water storage tank 2 is greater than the water inflow, and the water level in the closed water storage tank 2 drops, triggering the float valve 8 to open, the water hammer pump 7 works to replenish more water in the water reservoir 1 into the closed water storage tank 2 through the water replenishment booster pipe 6, so that the water level in the closed water storage tank 2 returns to normal, and then the negative pressure returns to normal.

[0031] Example 2 A siphon-type circulating hydroelectric power generation system

[0032] Based on the structure of Example 1, this embodiment makes changes to the water replenishment and boosting components and the power generation equipment, as follows:

[0033] like Figure 2 As shown, the water replenishment and boosting assembly of this embodiment also includes a water pump 10, which is arranged on the water replenishment and boosting pipe 6 and connected in parallel with the water hammer pump 7. In addition, in this embodiment, a ball valve 9 is arranged on the water hammer pump branch and the water pump branch of the water replenishment and boosting pipe 6. Generally, the ball valve 9 on the water pump branch is in a closed state. When it is necessary to quickly replenish water into the closed water storage tank 2, or the water level in the closed water storage tank 2 cannot be restored to normal by replenishing water through the water hammer pump 7, the ball valve 9 on the water pump branch is opened, and the water pump 10 is used to assist the water hammer pump 7 in replenishing water into the closed water storage tank 2.

[0034] like Figure 2 As shown, the power generation equipment of this embodiment also includes a turbine generator set 11, which is an existing structure and is arranged below the hydro-generator set 5. The water receiving position of the turbine generator set 11 is arranged below the hydro-generator set 5, and the water discharge position of the turbine generator set 11 is arranged above the reservoir 1. When working, the water in the closed water storage tank 2 first impacts the hydro-generator set 5, and then impacts the turbine generator set 11, so that the potential energy of the water can be fully utilized.

[0035] It should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A siphon-type circulating hydroelectric power generation system, comprising a water reservoir, a closed water storage tank, a siphon pipe and a power generation device; the closed water storage tank is higher than the water reservoir, the siphon pipe is connected between the water reservoir and the closed water storage tank, the power generation device is arranged above the water reservoir and below the closed water storage tank; the drain pipe of the closed water storage tank faces the power generation device, and the power generation device converts the potential energy of water into electrical energy; the characteristics are: It also includes a water replenishment and pressure-boosting assembly, which includes a water replenishment and pressure-boosting pipe connected between the water reservoir and the closed water storage tank, a water hammer pump arranged on the water replenishment and pressure-boosting pipe, and a float valve arranged at the water outlet end of the water replenishment and pressure-boosting pipe; The ram pump is below the water reservoir.

2. The siphon-type circulating hydroelectric power generation system according to claim 1, characterized in that: The water replenishment and boosting assembly also includes a water pump arranged on the water replenishment and boosting pipe, and the water pump is connected in parallel with the water hammer pump; Ball valves are provided on the water hammer pump branch and the water pump branch of the water supply and booster pipe.

3. The siphon-type circulating hydroelectric power generation system according to claim 2, characterized in that: Ball valves are provided on both the siphon and drain pipe.

4. The siphon-type circulating hydroelectric power generation system according to any one of claims 1 to 3, characterized in that: The power generation equipment includes a water turbine generator set and a turbine generator set; the water inlet position of the water turbine generator set is arranged below the drain pipe, and the drain position of the water turbine generator set is arranged above the water inlet position of the turbine generator set; the drain position of the turbine generator set is arranged above the water reservoir.

5. The siphon-type circulating hydroelectric power generation system according to claim 4, characterized in that: The top of the water reservoir is open, and filter screens are arranged at the water inlet ends of the siphon pipe and the water replenishment booster pipe in the water reservoir.

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