CN-122015165-A - System for deep water geothermal energy combines anticorrosive water energy storage device to increase energy

CN122015165ACN 122015165 ACN122015165 ACN 122015165ACN-122015165-A

Abstract

The invention belongs to the technical field of heat supply, and relates to a system for increasing energy by combining deep water geothermal energy with an anti-corrosion water energy storage device, which comprises a geothermal well, a first heat exchanger, a recharging well and a first heat supply pipe network which are connected in sequence; the auxiliary heat supply unit comprises a second heat exchanger, a water source heat pump and a second heat supply pipe network. The invention realizes the 'peak clipping and valley filling' type flexible energy storage of geothermal water by adding the heat storage tank, and constructs a 'primary heat exchange direct supply + secondary water source heat pump cascade temperature raising' dual-path heat supply framework, so that the geothermal well still keeps the designed flow to stably fetch water in a low load period, high-grade heat energy is stored and reused in a grading manner, the full life cycle energy utilization efficiency of the system is improved, the economic advantage of the geothermal system compared with the traditional energy supply equipment is enhanced, the application scene of the system is widened, and the large-scale application of the geothermal system in medium and small public buildings and newly built communities is forcefully promoted.

Inventors

ZHAO JIANLONG
WANG PENG
LIU ZHIYI
GE SHAOYU
LI CHUNXIAN
YUAN LU

Assignees

共益合创集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (9)

1. The utility model provides a deep water type geothermal combination anticorrosive water energy storage device increases system of energy, includes geothermal well, first heat exchanger and recharging well that connect gradually, first heat exchanger is connected with first heating pipe network, its characterized in that still includes: The energy storage unit comprises a heat storage tank, an inlet of the heat storage tank is connected with an outlet of the geothermal well, an outlet of the heat storage tank is connected with a first inlet of the first heat exchanger, and the heat storage tank is used for storing geothermal water from the geothermal well; The auxiliary heat supply unit comprises a second heat exchanger, a water source heat pump and a second heat supply pipe network, wherein a first inlet of the second heat exchanger is connected with a first outlet of the first heat exchanger, a first outlet of the second heat exchanger is connected with an inlet of a recharging well, a first inlet of the water source heat pump is connected with a second outlet of the second heat exchanger, a first outlet of the water source heat pump is connected with a second inlet of the second heat exchanger, a second outlet of the water source heat pump is connected with an inlet of the second heat supply pipe network, a second inlet of the water source heat pump is connected with an outlet of the second heat supply pipe network, geothermal water in the heat storage tank enters the heat storage tank to be stored, and sequentially enters the first heat exchanger and the second heat exchanger to be matched with the first heat supply pipe network and the water source heat pump to be subjected to secondary heat supply with the second heat supply pipe network during heat supply.
2. The system for increasing energy by using deep geothermal combined anti-corrosive water energy storage device according to claim 1, wherein a buffer tank is arranged between the first outlet of the second heat exchanger and the inlet of the recharging well, the inlet of the buffer tank is connected with the first outlet of the second heat exchanger, and the outlet of the buffer tank is connected with the inlet of the recharging well.
3. The system for increasing energy by using a deep water geothermal combined anti-corrosive water energy storage device according to claim 1, wherein the first heat exchanger, the second heat exchanger and the heat storage tank are all of anti-corrosive structures.
4. The system for increasing energy by using the deep water geothermal combined anti-corrosive water energy storage device according to claim 1, wherein the difference between the water outlet temperature of the geothermal well and the water return temperature of the recharging well is 35-45 ℃.
5. The system for increasing energy of a deep water geothermal combined with anti-corrosive water energy storing device according to claim 4, wherein the difference between the water outlet temperature of the geothermal well and the water return temperature of the recharging well is 40 ℃.
6. The system for increasing energy by using the deep water geothermal combined anti-corrosive water energy storage device according to claim 1, wherein the water supply temperature of the first heat supply pipe network and the water supply temperature of the second heat supply pipe network are both 40 ℃ to 50 ℃.
7. The system for increasing energy by using a deep water geothermal combined anti-corrosive water energy storage apparatus according to claim 6, wherein the water supply temperature of the first heat supply pipe network and the water supply temperature of the second heat supply pipe network are both 45 ℃.
8. The system for increasing energy by using the deep water geothermal combined anti-corrosive water energy storage device according to claim 1, wherein the return water temperature of the first heat supply pipe network and the return water temperature of the second heat supply pipe network are both 30-40 ℃.
9. The system for increasing energy by using a deep water geothermal combined anti-corrosive water energy storage device according to claim 8, wherein the return water temperature of the first heat supply pipe network and the return water temperature of the second heat supply pipe network are both 35 ℃.

Description

System for deep water geothermal energy combines anticorrosive water energy storage device to increase energy Technical Field The invention belongs to the technical field of heat supply, and relates to a system for increasing energy by a deep water geothermal combined anti-corrosion water energy storage device. Background The deep water geothermal heat supply and cold supply system is used as an important form of renewable energy source utilization, and is widely applied to building energy saving scenes such as central heating in the north, cold supply in the south, independent temperature and humidity control and the like. The typical configuration comprises a geothermal exploitation well, a heat exchange station, a tail end transmission pipe network and user side air conditioning/heating equipment, heat transfer between geothermal water and secondary side working medium (water) is realized through a plate-type or shell-and-tube-type heat exchanger, the system design is usually based on the maximum heat/cold load of a building, the required geothermal water flow is reversely pushed, and the water intake, the heat exchange area and the water pump lift of the geothermal well are determined according to the heat transfer. However, in the actual running process, the actual load of the building in the hour level is in a low-amplitude range for a long time under the influence of factors such as climate fluctuation, building utilization rate change and load dynamic characteristics, so that the actual water intake of a geothermal well is far lower than a designed value, and the phenomenon ensures that a large amount of high-grade geothermal energy cannot be effectively extracted and utilized, thereby not only remarkably reducing the energy utilization efficiency of the whole life cycle of the system, but also directly weakening the economic advantage of the geothermal system compared with traditional energy supply equipment such as a gas boiler, an air source heat pump and the like, and further restricting the large-scale popularization and application of the geothermal system in small and medium-sized public buildings and newly built communities. Disclosure of Invention The invention aims to provide a system for increasing energy by combining deep water geothermal energy with an anti-corrosion water energy storage device, which can effectively store high-grade geothermal energy which is not fully utilized, adjust the matching degree of geothermal water intake and building dynamic load and improve the energy utilization efficiency and economy of the system. In order to achieve the above purpose, the technical scheme provided by the invention is as follows: the utility model provides a deep water type geothermal energy combines anticorrosive water energy storage device to increase system of energy, includes geothermal well, first heat exchanger and recharging well that connect gradually, and first heat exchanger is connected with first heating network, still includes: The energy storage unit comprises a heat storage tank, an inlet of the heat storage tank is connected with an outlet of the geothermal well, an outlet of the heat storage tank is connected with a first inlet of the first heat exchanger, and the heat storage tank is used for storing geothermal water from the geothermal well; The auxiliary heat supply unit comprises a second heat exchanger, a water source heat pump and a second heat supply pipe network, wherein a first inlet of the second heat exchanger is connected with a first outlet of the first heat exchanger, a first outlet of the second heat exchanger is connected with an inlet of a recharging well, a first inlet of the water source heat pump is connected with a second outlet of the second heat exchanger, a first outlet of the water source heat pump is connected with a second inlet of the second heat exchanger, a second outlet of the water source heat pump is connected with an inlet of the second heat supply pipe network, a second inlet of the water source heat pump is connected with an outlet of the second heat supply pipe network, geothermal water in the heat storage tank enters the heat storage tank for storage, and sequentially enters the first heat exchanger and the second heat exchanger during heat supply, and is matched with the first heat supply pipe network and the water source heat pump to perform secondary heat supply with the second heat supply pipe network. The invention is also characterized in that: And a buffer tank is arranged between the first outlet of the second heat exchanger and the inlet of the recharging well, the inlet of the buffer tank is connected with the first outlet of the second heat exchanger, and the outlet of the buffer tank is connected with the inlet of the recharging well. Wherein the first heat exchanger, the second heat exchanger and the heat storage tank are all of an anti-corrosion structure. The difference value between the water outlet temperature of the