TW201300637A - Waste heat venous geothermal circulation power generation system - Google Patents

Abstract

The present invention provides a waste heat venous geothermal circulation power generation system which comprises the power generation set constructed on the ground, a thermal tank to accommodate the geothermal water, a circulation pipeline comprises a hot water inlet pipeline connecting the thermal tank and the power generation set which is used to transmit the geothermal water form the thermal tank to the power generation set, and a cold water outlet pipeline connecting the thermal tank and power generation set to transmit the used geothermal water return to the thermal tank, a geothermal water pipeline connected to the thermal tank and penetrates deeply into the underground, and a tail water return pipe connected to thermal tank and penetrates deeply into the underground. Thus, the geothermal water can be reheated instantly and utilized without consuming any other energy resources, and the tail water after utilized can be flown back into the underground to reserve the geothermal water resources.

Description

Waste waste heat vein geothermal power generation system

The present invention relates to a power generation system, and more particularly to a power generation system designer that utilizes geothermal water generated by geothermal heat to perform cycle power generation.

Today's power generation technology has developed in many ways. In addition to traditional hydropower, thermal power and nuclear power generation, in order to seek cleaner and greener power, reduce the impact on the global environment, and develop wind power, solar power and geothermal Power generation and so on. Among them, the principle of geothermal power generation is to heat the groundwater to form geothermal water (hot springs) through underground heat sources (such as the heat of volcanic lava), convert the thermal energy of geothermal water into mechanical energy, and then convert it into electrical energy using mechanical energy. Today, there are already long-established geothermal power stations around the world.

Referring to FIG. 1 , it is a schematic diagram of the configuration of a current geothermal power generation system, which includes a generator set 100 disposed on geothermal resources, and the generator set 100 is provided with a turbine generator driven by hot water and steam, and A geothermal well is drilled on the ground, the geothermal well having at least one well pipe 200 directly underground to the geothermal water source, connecting the well pipe 200 to the turbine generator of the genset 100, and selectively arranging a connecting well pipe 200 Pumping motor 300. Thereby, the natural hot water source of the geothermal water source is used to extract the image, or extracted by the pump motor 300, so that the geothermal water is supplied to the turbine generator of the genset 100 through the well pipe 200, thereby causing the turbine generator to operate and generate electricity.

However, the above-mentioned geothermal power generation system adopts an instant flash power generation technology, which directly depressurizes the geothermal water of 160 ° C to generate steam, and inputs it into a turbine generator to push it, and then condenses the steam as water, so It is impossible to recycle the geothermal water resources ejected or extracted from the underground, resulting in low economic benefits. Moreover, the use of condensed water for other purposes will easily lead to the rapid depletion of groundwater resources, which will seriously damage the earth's resources.

Therefore, how to create a waste waste heat vein geothermal power generation system to reheat the geothermal water after use, but no need to use other energy sources, re-circulate the geothermal water, and use the tail The return of water to the ground and the protection of geothermal water resources will be the active disclosure of the present invention.

In view of the above-mentioned shortcomings and shortcomings of the geothermal power generation technology, the creator feels that he has not perfected it, exhausted his mental research and overcome it, and based on his accumulated experience in the industry for many years, he developed a waste heat and vein geothermal The circulating power generation system is designed to achieve the purpose of repeatedly recycling the geothermal water and returning the used tail water to the ground.

The main object of the present invention is to provide a waste waste heat venous geothermal power generation system, which is constructed by using a generator set, a heat preservation tank, a circulation pipeline, a geothermal water pipe and a tail water return pipe to form a waste heat-revenue vein geothermal power generation system, thereby enabling the power generation system to The geothermal water generated by geothermal energy is used for power generation, and the used water is returned to the heat preservation tank to be reheated instantaneously to repeatedly recycle the geothermal water, and the used tail water can be returned to the ground to fully utilize the water. Geothermal water resources, and the protection of geothermal water resources.

In order to achieve the above object, a preferred embodiment of the waste heat recovery vein geothermal power generation system of the present invention comprises: one or more sets of generator sets built on a ground, the generator set having at least one steam turbine generator; The heat preservation tank has a chamber for accommodating the geothermal water, and a thermal insulation wall surrounding the chamber; a circulation pipeline including a hot water input pipe and a cold water output pipe The hot water input pipe is connected to the chamber of the heat retention tank and the steam turbine generator for inputting the geothermal water into the steam turbine generator; the cold water output pipeline is connected to the steam turbine generator and the a chamber of the heat preservation tank for returning the used hot water to the chamber of the heat preservation tank; a hot water pipe having one end deep below the ground, connected to the ground water below the ground, and another One end is connected to the chamber of the heat preservation tank for inputting the geothermal water into the chamber of the heat preservation tank; and a tail water return pipe, one end of the tail water return pipe is connected to the chamber of the heat retention tank, and the other end is Into the ground below, for the reflux chamber tail water tank to heat the ground below.

According to the preferred embodiment of the present invention, the waste heat recovery system is further provided with a water pumping device, which is disposed in the geothermal water pipe for extracting the geothermal water below the ground and inputting the heat preservation. The chamber of the tank.

The exhaust waste heat venous geothermal power generation system according to the above preferred embodiment, wherein a plurality of the gensets and a plurality of circulating pipes are included, and the steam turbine generators of the gensets are respectively connected to the capacity of the sump by the circulating pipes. room.

According to the above preferred embodiment, the waste heat recovery vein thermal cycle power generation system includes a plurality of the generator sets, and the steam turbine generators of the generator sets are connected in series through a series pipeline, one end of the series pipeline is connected to the hot water. An input pipe, the other end of which is connected to the cold water output pipe.

Therefore, the waste heat-recovering vein geothermal power generation system of the present invention can temporarily store the geothermal water ejected or extracted from the geothermal water pipe by using the chamber of the heat preservation tank, and use the thermal insulation wall to maintain the geothermal water. High temperature, so that the hot water is input into the steam turbine generator of the generator set through the hot water input pipe of the circulating pipe, so that the steam turbine generator operates to generate electricity; as for the geothermal water after passing the steam turbine generator, The cold water output pipe of the circulating pipe is further flowed to the chamber of the heat preservation tank, and is mixed with the high-temperature hot water to be heated again; thereby recycling the geothermal water repeatedly, thereby achieving the effect of fully utilizing the geothermal water resource. Furthermore, the present invention can pass the other end of the tail water return pipe deep below the ground, and return the tail water of the heat retention tank chamber to the ground below, so that the fully used geothermal water (which has been in a low temperature state) is recharged to The bottom of the ground, in order to achieve the effect of protecting geothermal water resources.

In order to fully understand the object, features and advantages of the present invention, the present invention will be described in detail by the following specific embodiments and the accompanying drawings, which are illustrated as follows: Referring to Figure 2, the present invention The waste heat recovery vein geothermal power generation system is a power generation system that uses the geothermal water 10 naturally generated underground to generate electricity. The preferred embodiment includes one or more sets of generator sets built on a ground 20. 1. A heat preservation tank 2, a circulation pipe 3, a geothermal water pipe 4 and a tail water return pipe 5, wherein: the generator set 1 has at least one steam turbine generator 11 which utilizes hot water And/or a machine that steam drives the turbine to generate electricity. The heat retention tank 2 is built on one side of the generator set 1 or other preferred location, has a chamber 21 for accommodating the geothermal water 10, and a thermal insulation wall surrounding the chamber 21 22. The thermal insulation wall 22 is composed of a thermal insulation material. The circulation pipe 3 includes a hot water input pipe 31 and a cold water output pipe 32; the hot water input pipe 31 is connected to the chamber 21 of the heat retention tank 2 and the steam turbine generator 11 for the heat preservation tank 2 The geothermal water 10 in the chamber 21 is input to the steam turbine generator 11 to operate the steam turbine generator 11 for power generation; the cold water output conduit 32 is connected to the steam turbine generator 11 and the chamber 21 of the heat retention tank 2. For returning the used geothermal water 10 to the chamber 21 of the holding tank 2. One end of the geothermal water pipe 4 is deep below the ground 20, is connected to the groundwater 10 below the ground 20 water source, and the other end is connected to the chamber 21 of the heat preservation tank 2, so as to pass the geothermal water 10 ejected or extracted by itself. The geothermal water pipe 4 is temporarily stored in the chamber 21 of the heat retention tank 2. The tail water return pipe 5 is connected at one end to the chamber 21 of the heat retention tank 2, and the other end is deep below the ground 20 for returning excess tail water in the chamber 21 of the heat retention tank 2 to below the ground 20. Thereby, the waste heat recovery vein geothermal power generation system of the present invention is formed, and the power generation system can be assembled into a geothermal power station.

By the design of the generator set 1, the heat preservation tank 2, the circulation pipeline 3, the geothermal water pipe 4 and the tail water return pipe 5 of the invention, the waste waste heat vein geothermal power generation system (power station) is formed. Referring to FIG. 2, when the power generation operation is performed, the geothermal water 10 is ejected from the geothermal water pipe 4 or temporarily taken into the chamber 21 of the heat retention tank 2 for temporary storage, and is maintained by the thermal insulation wall 22 The high temperature of the geothermal water 10 is between about 130 and 160 ° C; thus, the hot water 10 is supplied to the steam turbine generator 11 of the genset 1 through the hot water input pipe 31 of the circulating pipe 3 of the present invention. The steam turbine generator 11 is operated to generate electricity. Thereafter, the geothermal water 10 of the steam turbine generator 11 is returned to the chamber 21 of the heat retention tank 2 through the cold water outlet pipe 32 of the circulation pipe 3, at which time the temperature is only about 80 ° C. When it is returned to the chamber 21 of the heat retention tank 2 through the cold water outlet pipe 32, it is mixed with the geothermal water 10 between 130 and 160 ° C and instantaneously reheated, thereby enabling the steam turbine to be input. The geothermal water 10 of the motor 11 is maintained at 100 to 120 ° C; thereby, the present invention can repeatedly recycle the geothermal water 10, avoiding the use of the geothermal water 10 after one use, thereby achieving full utilization of the geothermal water resources and Reduce the cost of power generation.

Furthermore, referring to Fig. 2, the present invention can also make the excess tail water of the heat retention tank 2 chamber 21 back below the ground 20 through the design in which the other end of the tail water return pipe 5 is deeper than the ground 20, so that sufficient After being used, the geothermal water 10 (which has been in a relatively low temperature state) is recharged to the bottom of the ground. After recharging to the ground, it can be reheated by using the geothermal source to avoid the depletion or inaccessibility of the geothermal water resources, thereby achieving protection. The effect of geothermal water resources.

Referring to FIG. 2 again, a preferred embodiment of the present invention further includes a pumping device 6 for pumping the geothermal water 10, preferably disposed at the geothermal water pipe 4. When the local hot water 10 resource cannot be ejected by itself, the pumping device 6 can perform the extraction, and the geothermal water 10 is input into the chamber 21 of the heat preservation tank 2 for temporary storage, and the steam turbine generator of the generator set 1 is further supplied. 11 to generate electricity.

Referring again to FIG. 3, in order to make full use of geothermal water resources, a preferred embodiment of the present invention includes a plurality of generator sets 1 and a plurality of circulating ducts 3, thereby forming a geothermal power station, each of which has a steam turbine of the generating set 1. The generators 11 are respectively connected to the chamber 21 of the heat retention tank 2 by a group of circulating pipes 3 (including a hot water input pipe 31 and a cold water output pipe 32), and the technical features of the connection are as described above, and it goes without saying.

Referring additionally to FIG. 4, also in order to make full use of geothermal water resources, a preferred embodiment of the present invention includes a plurality of generator sets 1 that can be implemented to form a geothermal power plant, each of which has a steam turbine generator 11 is connected in series through a series of pipes 12, and one end of the series pipe 12 is connected to the hot water input pipe 31 of the circulation pipe 3, and the other end of the series pipe 12 is connected to the cold water output pipe 32.

As described above, the present invention fully complies with the three requirements of the patent: novelty, advancement, and industrial applicability. In terms of novelty and advancement, the present invention is constructed by using a generator set, a heat preservation tank, a circulation pipe, a geothermal water pipe and a tail water return pipe to form a waste heat-revenue vein geothermal power generation system, so that the power generation system can utilize the geothermally generated land. The hot water is used for power generation, and the used water is returned to the heat preservation tank to be reheated instantaneously to repeatedly recycle the geothermal water, and the used tail water can be returned to the ground to fully utilize the geothermal water resources. And the protection of geothermal water resources and other effects. In terms of industrial availability, the technical means of the present invention can fully satisfy the needs of the current geothermal power generation industry.

The invention has been described above in terms of the preferred embodiments, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of the invention is defined by the scope of the following claims.

10. . . Geothermal water

20. . . ground

1. . . Generator set

11. . . Steam turbine generator

12. . . Tandem pipe

2. . . Insulation tank

twenty one. . . Room

twenty two. . . Thermal insulation wall

3. . . Circulating pipe

31. . . Hot water input pipe

32. . . Cold water output pipe

4. . . Geothermal water pipe

5. . . Tail water return pipe

6. . . Pumping device

Figure 1 is a schematic diagram showing the configuration state of a conventional geothermal power generation system.

Figure 2 is a schematic view showing the configuration state of the first preferred embodiment of the present invention.

Figure 3 is a schematic view showing the configuration state of the second preferred embodiment of the present invention.

Figure 4 is a schematic view showing the configuration state of the third preferred embodiment of the present invention.

10. . . Geothermal water

20. . . ground

1. . . Generator set

11. . . Steam turbine generator

2. . . Insulation tank

twenty one. . . Room

twenty two. . . Thermal insulation wall

3. . . Circulating pipe

31. . . Hot water input pipe

32. . . Cold water output pipe

4. . . Geothermal water pipe

5. . . Tail water return pipe

6. . . Pumping device

Claims (4)

An exhaust waste heat venous geothermal power generation system for generating electricity by using geothermal water generated by geothermal heat, comprising: one or more sets of generator sets built on a ground, the generator set having at least one steam turbine generator; a heat retention tank having a chamber for accommodating the geothermal water, and a thermal insulation wall surrounding the chamber; a circulation pipeline including a hot water input pipe and a cold water output a hot water input pipe connected to the chamber of the heat retention tank and the steam turbine generator for inputting the geothermal water into the steam turbine generator; the cold water output pipeline is connected to the steam turbine generator The chamber of the heat preservation tank is configured to return the used hot water to the chamber of the heat preservation tank; a hot water pipe, one end of the hot water pipe penetrates below the ground, and is connected to the ground water below the ground. The other end is connected to the chamber of the heat preservation tank for inputting the geothermal water into the chamber of the heat preservation tank; and a tail water return pipe, one end of the tail water return pipe is connected to the chamber of the heat retention tank, and End of the depth below ground to the reflux chamber tail water tank to heat the ground below. The waste heat venous geothermal power generation system according to the first aspect of the invention, further comprising a water pumping device, wherein the water pumping device is disposed in the geothermal water pipe for extracting the geothermal water below the ground and inputting the The chamber of the holding tank. The waste heat venous geothermal power generation system according to claim 1, wherein a plurality of the gensets and a plurality of circulating pipes are included, and the steam turbine generators of the gensets are respectively connected to the sump by the circulating pipes. Room. The waste heat venous geothermal power generation system according to claim 1, wherein a plurality of the generator sets are included, and the steam turbine generators of the generator sets are connected in series through a series pipe, one end of the series pipe is connected to the heat A water input pipe, the other end of which is connected to the cold water output pipe.