阅读说明：本技术 一种中深层高温含水层储能井回灌系统 (Middle-deep high-temperature aquifer energy storage well recharge system ) 是由 欧阳鑫南 戴志清 邬小波 刘少勇 梁晗 王铁秋 刘铮 房贤印 柯弋 裴辉 于 2021-08-30 设计创作，主要内容包括：一种中深层高温含水层储能井回灌系统。本产品其组成包括:开采井、回灌井,所述的开采井内设置潜水泵,所述的潜水泵连接地热水管路,所述的地热水管路连接热泵机组,所述的热泵机组连接空调侧管路,所述的热泵机组连接排气罐,所述的排气罐连接加压泵,所述的加压泵连接主电动阀,所述的主电动阀连接冲洗管线,所述的冲洗管线插入所述的回灌井内,所述的加压泵连接1号电动阀,所述的1号电动阀连接2号电动阀。本发明用于中深层高温含水层储能井回灌系统。(A recharge system of a middle-deep high-temperature aquifer energy storage well. The production well, recharge well, the production well in set up the immersible pump, the immersible pump connect the geothermal water pipeline, geothermal water pipeline connect heat pump set, heat pump set connect air conditioner side pipeline, heat pump set connect the exhaust can, the exhaust can connect the force (forcing) pump, the force (forcing) pump connect main electric valve, main electric valve connect and wash the pipeline, wash the pipeline insert in the recharge well, the force (forcing) pump connect No. 1 motorised valve, No. 1 motorised valve connect No. 2 motorised valves. The invention is used for the recharge system of the energy storage well of the high-temperature aquifer in the middle-deep layer.)

1. A middle-deep high-temperature aquifer energy storage well recharge system comprises a production well and a recharge well and is characterized in that a submersible pump is arranged in the production well and connected with a geothermal water pipeline, the geothermal water pipeline is connected with a heat pump unit, the heat pump unit is connected with an air conditioner side pipeline, the heat pump unit is connected with an exhaust tank, the exhaust tank is connected with a pressure pump, the pressure pump is connected with a main electric valve, the main electric valve is connected with a flushing pipeline, the flushing pipeline is inserted into the recharge well, the pressure pump is connected with a No. 1 electric valve, and the No. 1 electric valve is connected with a No. 2 electric valve.

2. The system of claim 1, wherein the geothermal water pipeline is sequentially connected with a temperature sensor 1, a pressure sensor 1 and a flow sensor 1, the temperature sensor 1, the pressure sensor 1 and the flow sensor 1 are all connected with a PLC control platform, the PLC control platform is all connected with a temperature sensor 2, a pressure sensor 2 and a flow sensor 2, the PLC control platform is connected with a liquid level transmitter 1 and a liquid level transmitter 2, the recharge well is connected with a wellhead device, and the wellhead device is connected with an exhaust valve and an electric valve 3.

3. The system of claim 2, wherein the production well is connected with a wellhead device, the wellhead device is connected with an exhaust valve, a monitoring pipe 1 and a monitoring pipe 2 are arranged in the wellhead device, the monitoring pipe 1 and the monitoring pipe 2 extend into the production well, the monitoring pipe 1 and the monitoring pipe 2 are connected with an online water quality monitoring platform, the online water quality monitoring platform is connected with a monitoring pipe 3 and a monitoring pipe 4, and the monitoring pipe 3 and the monitoring pipe 4 extend into the recharge well.

The technical field is as follows:

the invention relates to a recharge system for a middle-deep high-temperature aquifer energy storage well.

Background art:

the geothermal energy is a green, low-carbon and recyclable renewable energy source, has the characteristics of large reserves, wide distribution, cleanness, environmental protection, stability, reliability and the like, is not influenced by factors such as seasons, climate, day and night change and the like compared with wind energy and solar energy, and is a valuable comprehensive mineral resource.

The aquifer energy storage is realized by taking underground water as a medium and 100 percent of raw water as a means and utilizing an energy storage technology developed by geological heat inertia to extract and recharge the underground water from the aquifer through an underground energy storage well.

The middle-deep high-temperature aquifer energy storage system has high temperature and high pressure, and the PVC well pipe adopted by the current shallow aquifer energy storage well is not suitable for the high-temperature and high-pressure environment, so that new well forming materials, processes and a recharging system matched with the well forming materials and the processes need to be applied.

The invention content is as follows:

the invention aims to provide a recharge system of a middle-deep high-temperature aquifer energy storage well for dredging pipelines in a manual pressurization mode.

The above purpose is realized by the following technical scheme:

the utility model provides a well deep layer high temperature aquifer energy storage well recharge system which comprises an exploitation well and a recharge well, the exploitation well in set up the immersible pump, the immersible pump connect the geothermal water pipeline, geothermal water pipeline connect the heat pump set, the heat pump set connect the air conditioner side pipeline, the heat pump set connect the air discharge tank, the air discharge tank connect the force (forcing) pump, the force (forcing) pump connect main electric valve, main electric valve connect and wash the pipeline, wash the pipeline insert in the recharge well, the force (forcing) pump connect No. 1 motorised valve, No. 1 motorised valve connect No. 2 motorised valves.

A middle deep layer high temperature aquifer energy storage well recharge system, geothermal water pipeline connect 1 temperature sensor, 1 pressure sensor, 1 flow sensor in order, 1 temperature sensor 1 pressure sensor, 1 flow sensor all connect PLC control platform, PLC control platform all connect 2 temperature sensor, 2 pressure sensor, 2 flow sensor, PLC control platform connect 1 level transmitter and 2 level transmitter, the recharge well connect the wellhead assembly, the wellhead assembly connect discharge valve and 3 motorised valves.

A well deep layer high temperature aquifer energy storage well recharge system, the exploitation well connect the wellhead assembly, the wellhead assembly connect discharge valve, the wellhead assembly in set up No. 1 monitoring tube and No. 2 monitoring tubes, No. 1 monitoring tube with No. 2 monitoring tubes all extend to the exploitation well in, No. 1 monitoring tube with No. 2 monitoring tubes all connect quality of water on-line monitoring platform, quality of water on-line monitoring platform connect No. 3 monitoring tubes and No. 4 monitoring tubes, No. 3 monitoring tubes with No. 4 monitoring tubes all stretch into the recharge well in.

Has the advantages that:

1. the drilling of the exploitation well and the recharge well is preferably pump-pumping or gas-lift reverse circulation drilling, mud is not adopted as much as possible when the aquifer is drilled, so that the cuttings are effectively cleaned, and the aquifer is ensured to be smooth.

2. The gravel material of the production well and the recharging well adopts the glass steel balls, has strong stability, and can effectively solve the problem of water-rock reaction of the quartz sand filter material.

3. The invention discloses a preferable well washing process for a production well and a recharge well, which adopts various modes such as gas lift, piston, hydraulic oscillator and the like to carry out combined well washing.

4. The pipeline, the valve and other materials are all made of glass fiber reinforced plastic, and the glass fiber reinforced plastic composite material has the advantages of high strength, strong impact resistance, good temperature resistance, strong ageing resistance, strong designability of corrosion resistance and capability of selecting resin types according to different corrosion environment types.

5. The exploitation well and the recharge well are both provided with water quality monitoring pipes which are distributed at different depths of an aquifer, and water quality monitoring sensors are arranged in the monitoring pipes and can monitor parameters such as ph, conductivity, dissolved oxygen, chloride ions and the like and feed back the results to a water quality online monitoring platform, so that the change of the underground water redox environment can be conveniently responded, and corresponding measures are taken. In addition, the water quality monitoring pipe can also be used for tracer monitoring so as to research the migration rule of underground water of the aquifer energy storage system.

6. The invention is provided with a temperature sensor, a pressure sensor, a flow sensor and a liquid level transmitter, is connected with a PLC control center, and can realize automatic control by matching with an electric valve.

7. The flushing pipeline in the recharge well is provided with round holes corresponding to the aquifer and distributed spirally.

8. The recharging well can realize high-pressure jet well washing through the geothermal water pipeline, the valve and the pressurizing pump on the wellhead device and the flushing pipeline in the recharging well, and effectively solves the problem of aquifer gas blockage. In addition, additional pipelines are not needed to be installed, and under the condition that an air compressor is externally connected, the gas lift well flushing can be realized, so that the problem of blockage of impurities in the aquifer is effectively solved.

Description of the drawings:

fig. 1 is a schematic overall structure of the product.

The specific implementation mode is as follows:

the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.

Example 1:

the system comprises an exploitation well 1 and a recharge well 25, wherein a submersible pump 2 is arranged in the exploitation well, the submersible pump is connected with a geothermal water pipeline 3, the geothermal water pipeline is connected with a heat pump unit 9, the heat pump unit is connected with an air conditioner side pipeline 10, the heat pump unit is connected with an exhaust tank 11, the exhaust tank is connected with a booster pump 13, the booster pump is connected with a main electric valve 19, the main electric valve is connected with a flushing pipeline 24, the flushing pipeline is inserted into the recharge well, the booster pump is connected with a No. 1 electric valve 12, and the No. 1 electric valve is connected with a No. 2 electric valve 20.

Geothermal water pipeline connect in order No. 1 temperature sensor 6, No. 1 pressure sensor 7, No. 1 flow sensor 8, No. 1 temperature sensor No. 1 pressure sensor No. 1 flow sensor all connect PLC control platform 14, PLC control platform all connect No. 2 temperature sensor 16, No. 2 pressure sensor 17, No. 2 flow sensor 18, PLC control platform connect No. 1 liquid level transmitter 28 and No. 2 liquid level transmitter 29, the recharge well connect wellhead assembly 23, wellhead assembly connect discharge valve 21 and No. 3 motorised valve 22.

The exploitation well connect wellhead assembly 4, the wellhead assembly connect exhaust valve 5, the wellhead assembly in set up No. 1 monitoring tube 30 and No. 2 monitoring tube 31, No. 1 monitoring tube with No. 2 monitoring tube all extend to in the exploitation well, monitoring tube No. 1 with No. 2 monitoring tube all connect quality of water on-line monitoring platform 15, quality of water on-line monitoring platform connect No. 3 monitoring tube 26 and No. 4 monitoring tube 27, No. 3 monitoring tube with No. 4 monitoring tube all stretch into the recharge well in.

Example 2:

in the system for recharging the energy storage well of the high-temperature aquifer in the middle-deep layer in embodiment 1, the drilling and well completion processes are preferably selected for the exploitation well and the recharging well. Pumping or gas-lift reverse circulation drilling is adopted, and mud is not adopted as much as possible when the aquifer is drilled; the well wall pipe and the strainer pipe of the finished well both adopt high-pressure glass steel pipes; performing wall breaking treatment before tube descending; the outside of the well wall pipe is provided with monitoring pipes, and the number and the positions of the monitoring pipes are determined according to the water-bearing stratum condition.

The submersible pump is selected after accurate hydraulic calculation.

Geothermal water pipeline, wellhead assembly, exhaust can, valve and flushing line are all glass steel material, can select suitable pressure grade according to actual conditions.

The temperature sensor, the pressure sensor and the flow sensor are all installed through screw connections.

The PLC control platform and the water quality on-line monitoring platform are integrated devices.

A water quality monitoring sensor is arranged in the monitoring pipe, and the result is fed back to the water quality on-line monitoring platform, so that the change of the oxidation-reduction environment of underground water can be conveniently coped with, and corresponding measures are taken. In addition, the method can also be used for tracer monitoring so as to research the migration rule of underground water of the aquifer energy storage system; the system is made of glass fiber reinforced plastic, and the corrosion resistance design is strong; the system can realize high-pressure jet well flushing and effectively solve the problem of gas blockage of the aquifer. In addition, additional pipelines are not needed to be installed, and under the condition that an air compressor is externally connected, the gas lift well flushing can be realized, and the problem of blockage of impurities in the aquifer is effectively solved.

Example 3:

the recharge system of the energy storage well of the middle-deep high-temperature aquifer in the embodiment comprises the following operation steps during normal recharge: geothermal water is extracted by a submersible pump in the exploitation well, enters a heat pump unit through a geothermal water pipeline, enters an exhaust tank after being utilized by the unit, flows into a flushing pipeline through a No. 1 electric valve and is then back-filled into a back-filling well. During the period, the exhaust valve and the exhaust tank perform automatic exhaust. No. 1 temperature sensor, No. 2 temperature sensor, No. 1 pressure sensor, No. 2 pressure sensor, No. 1 flow sensor, No. 2 flow sensor, No. 1 liquid level transmitter, No. 2 liquid level transmitter feed back real-time data to PLC control platform, and No. 1 supervisory tube, No. 2 supervisory tube, No. 3 supervisory tube, No. 4 intraductal water quality sensor of monitoring feeds back real-time data to quality of water on-line monitoring platform.

Removing air blockage: geothermal water is extracted by a submersible pump in an exploitation well, enters a heat pump unit through a geothermal water pipeline, enters an exhaust tank after being utilized by the unit, flows into a flushing pipeline through a pressure pump, a No. 1 electric valve and a main electric valve, and forms hydraulic oscillation and flushing gas blockage through high-pressure water jet.

Air lift sundry removing operation: the air compressor machine is connected to the front of No. 2 electric valve, closes main electric valve, opens No. 2 electric valve, realizes the gas lift through the flushing line, and the dirty water that contains debris is discharged through No. 3 electric valve.

The above detailed description of the high temperature aquifer energy storage well recharge system in a deep water aquifer with reference to the embodiments is illustrative and not restrictive, and therefore changes and modifications that do not depart from the general concept of the present invention are intended to be within the scope of the present invention.