CN220285703U - Integrated sand removal and filtration device for universal geothermal well - Google Patents

Integrated sand removal and filtration device for universal geothermal well Download PDF

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Publication number
CN220285703U
CN220285703U CN202320093655.2U CN202320093655U CN220285703U CN 220285703 U CN220285703 U CN 220285703U CN 202320093655 U CN202320093655 U CN 202320093655U CN 220285703 U CN220285703 U CN 220285703U
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China
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sand
desander
tank
remover
integrated
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CN202320093655.2U
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Chinese (zh)
Inventor
高俊
武德任
杜博闻
赵源
朱波
苏卫涛
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PowerChina Huadong Engineering Corp Ltd
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PowerChina Huadong Engineering Corp Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy

Abstract

The utility model provides a sand removal and filtration integrated device of a universal geothermal well, which comprises: the top of the tank body is provided with a water outlet pipe and a back flushing port, and the bottom of the tank body is provided with a slurry outlet and a valve thereof; the multi-layer filtering sand remover is sequentially arranged in the tank body from bottom to top; the guide pipe is connected with the water inlet pipe, penetrates from the upper part to the lower part of the filtering sand remover and is used for guiding geothermal fluid to the lower part of the tank body; the pressure stabilizing tank is connected with a water outlet pipe of the tank body through a pipeline, so that the stability of a geothermal well water outlet system is ensured; the back flushing pump is connected with the back flushing port through a back flushing pipeline, and a valve is arranged on the back flushing pipeline; the high-pressure spray nozzle is arranged at the upper part in the tank body and is connected with the back flushing port to flush the filtering sand remover. The utility model can improve the sand removal efficiency of geothermal fluid and realize online cleaning.

Description

Integrated sand removal and filtration device for universal geothermal well
Technical Field
The utility model relates to the technical field of geothermal fluid sand removal, in particular to a sand removal and filtration integrated device for a universal geothermal well.
Background
The geothermal energy is the thermal energy which is stored in the earth, has the characteristics of large reserve, wide distribution, green low carbon, recycling, stability, reliability and the like, and is a clean energy which is practical and feasible and has competitiveness. With the rapid consumption of non-renewable resources such as coal, petroleum, natural gas and the like, geothermal energy as a renewable clean energy source gradually replaces the non-renewable resources, and the geothermal energy is used in various forms such as power generation, heating, refrigeration, agriculture, medical treatment, hot spring industry, aquaculture and the like. Under the dual-carbon background, the geothermal energy is more and more valued, and the market prospect in the field of comprehensive utilization of the geothermal energy is wide. In the geothermal energy utilization process, geothermal fluid is blown out from a geothermal well, carries a large amount of sand particles and impurities, and is extremely easy to cause equipment damage and pipeline blockage. Sand deposits in the pipeline, increases geothermal fluid conveying resistance, increases enterprise energy consumption, and can block the pipeline when serious, influences the normal operation of production process. On the other hand, the heat transfer performance of the heating surface is deteriorated, the heat transfer resistance is increased, the heat exchange effect is affected, the heat cannot be effectively utilized, and the equipment overhaul and maintenance workload is increased. Pipeline filters are adopted for removing sand in the current industry, but the pipeline filters are frequently required to be shut down for cleaning or the filter screen is replaced, so that online sand removal cannot be achieved. Therefore, on-line removal of geothermal fluid sand is a key measure for improving the comprehensive utilization efficiency of geothermal energy.
Disclosure of Invention
The utility model aims to provide a sand removal and filtration integrated device for a universal geothermal well, so as to improve the sand removal efficiency of geothermal fluid and realize online cleaning. For this purpose, the utility model adopts the following technical scheme:
the utility model provides a general geothermal well degritting filters integrated device which characterized in that, degritting filters integrated device includes:
-a tank, the top of which is provided with a water outlet pipe and a back flushing port, the bottom of which is provided with a slurry outlet and a valve thereof;
-a multi-layer filtering desander, arranged in sequence in the tank from bottom to top;
-a flow conduit connected to a water inlet pipe, the flow conduit passing from above to below the filtering desander for guiding geothermal fluid to the lower part of the tank;
-a surge tank connected to the outlet pipe of the tank by a pipe, ensuring the stability of the geothermal well outlet system;
a backwash pump connected to the backwash port through a backwash pipe, the backwash pipe being provided with a valve;
-a high pressure spray nozzle provided in the upper part of the tank, connected to a back flush port, flushing the filter desander.
On the basis of adopting the technical scheme, the utility model can also adopt the following further technical schemes, and the further technical schemes can be combined for use:
the multi-layer filtering sand remover is provided with three layers from bottom to top, and the three layers are all in conical structures.
The three-layer sand remover comprises the following components in sequence from bottom to top:
-a primary desander, provided as a bottom layer, for removing sand with a diameter of more than 1 cm;
-a secondary desander, provided as an intermediate layer, for removing sand with a diameter of more than 3 mm;
-a fine filtration desander, provided as a top layer, for removing sand with a diameter of more than 1 mm.
The precise filtering sand remover adopts a quartz sand precise filter.
The primary sand remover, the secondary sand remover and the precise filtering sand remover are arranged at unequal intervals; the distance between the primary sand remover and the secondary sand remover is larger than the distance between the secondary sand remover and the precise filtering sand remover.
The slag slurry outlet valve adopts an electromagnetic flap valve.
The pressure stabilizing tank is provided with a water outlet pipe connected with a back flushing pump as a back flushing water source.
The sand removal and filtration integrated device for the universal geothermal well provided by the utility model adopts the multi-layer filtration sand remover, and after geothermal fluid passes through the multi-layer filtration sand remover, sand particles can be effectively removed, and the multi-layer filtration sand remover can absorb microorganisms in water by utilizing intercepted sand and can be backwashed in time, so that corrosion of a surge tank and a pipeline and accumulation of microorganisms are prevented. The utility model adopts the self-cleaning device, comprises a back flushing pipeline and a high-pressure spray port, fully covers and washes the multi-layer filtering sand remover, realizes automatic online cleaning, solves the technical problems of low sand removal efficiency and incapability of online cleaning of geothermal fluid in the prior art, realizes the one-time removal of sand and stone which influences the production process by geothermal water without stopping the machine, is easy to manufacture, saves space, can realize self-cleaning, and is suitable for various geothermal fluid production environments.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system diagram of a sand removal and filtration integrated device for a general geothermal well;
FIG. 2 is a schematic diagram of a sand removal and filtration integrated device for a general geothermal well;
fig. 3 is a schematic diagram of the structure of the sand removal filter tank provided by the utility model.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiment provides a general geothermal well degritting filters integrated device, including entry trip valve 1, honeycomb duct 2, jar body 3, primary sand remover 4, second grade sand remover 5, precision filtration sand remover 6, outlet pipe 7, export trip valve 8, surge tank 9, sediment thick liquid export 10, sediment thick liquid export valve 11, backwash pump 12, backwash mouth 13, high pressure spray nozzle 14 and backwash trip valve group 15.
Wherein, three layers of sand removers are sequentially arranged in the tank body 3 from bottom to top, and the three layers of sand removers are respectively the primary sand remover 4, the secondary sand remover 5 and the precise filtering sand remover 6.
The inlet of the flow guiding pipe 2 is connected with an inlet pipeline, and an inlet cut-off valve 1 is arranged on the inlet pipeline. The flow guide pipe 2 extends downwards from the central axis of the tank body 3, passes through the three-layer sand remover to the lower part of the tank body 3, is used for introducing geothermal fluid into the lower part of the tank body 3, creates working conditions for the geothermal fluid to sufficiently filter and remove sand, and can support the primary sand remover 4, the secondary sand remover 5 and the precise filtering sand remover 6.
The water outlet pipe 7 is positioned at the top of the tank body 3, is connected with the pressure stabilizing tank 9 through a connecting pipeline, and is provided with an outlet cut-off valve 8.
The top of the tank body 3 is also provided with a back flushing port 13, and the back flushing port 13 is connected with a high-pressure spray nozzle 14 positioned at the middle top of the tank body 3. The back flushing port 13 is connected with the outlet of the back flushing pump 12 through a connecting pipeline, and a flushing cut-off valve group 15 is arranged on the connecting pipeline.
The surge tank 9 is connected with a water outlet pipeline to a backwash pump 12 to be used for backwash flooding, and a flushing cut-off valve group 15 is also arranged on the water outlet pipeline.
The backwash pump 12 may be provided in two sets, one master and one slave.
The bottom of the tank body 3 is provided with a slurry outlet 10, and an electromagnetic flap valve 11 can be adopted as the slurry outlet valve 11.
Under the working state, geothermal fluid enters the tank body 3 through the inlet shutoff valve 1 and enters the bottom of the tank body 3 through the flow guide pipe 2. The geothermal fluid passes through the primary sand remover 4, the secondary sand remover 5 and the precise filtering sand remover 6 from bottom to top in sequence by virtue of pressure. Through experimental analysis and numerical simulation, the primary sand remover 4 can remove sand particles with the diameter of more than 1cm, the secondary sand remover 5 can remove sand particles with the diameter of more than 3mm, and the precise filtering sand remover 6 can remove sand particles with the diameter of more than 1mm, so that the technical barrier that cyclone sand removers used in the industry cannot be cleaned is broken through. Through experimental analysis and numerical simulation, the three-layer space layout can filter and remove sand and stone to the greatest extent, and the sand and stone which can be intercepted can adsorb microorganisms in water, so that the corrosion of a rear-end pipeline and the accumulation of microorganisms are prevented.
The three-layer filtering sand remover adopts non-planar arrangement, is arranged in a conical structure and is arranged in a non-equidistant way, so that the contact area of geothermal fluid is increased, convenience is brought to a back flushing process, and retained sand can be rapidly discharged out of the equipment body. Wherein, the distance between the primary sand remover 4 and the secondary sand remover 5 is larger than the distance between the secondary sand remover 5 and the precise filtering sand remover 6.
The precise filtering desander 6 adopts a quartz sand precise filter, uses quartz sand as a filter medium, and the geothermal fluid passes through the quartz sand precise filter after twice filtration, so that suspended matters, organic matters, colloid particles, microorganisms, chlorine, smell, partial heavy metal ions and the like in water are effectively trapped and removed, sand particles and impurities with diameters of more than 1mm after filtration can be completely removed, and the effects of reducing the turbidity of water and purifying the water quality are achieved.
After the geothermal fluid is filtered by the three-layer filtering sand remover, sand particles in the geothermal fluid can be effectively removed. The filtered geothermal fluid is delivered to a surge tank 9 through a water outlet 7 and an outlet cut-off valve 8, so that the geothermal fluid is filtered, and the quality of the filtered geothermal fluid meets the technological requirements of geothermal power generation, geothermal functions and the like. The surge tank 9 is used for reducing system pressure fluctuation and ensuring the stability of a geothermal well water outlet system.
The sand removal and filtration integrated device provided by the embodiment is provided with an online back flushing device, and sand and stone collected by the three-layer filtration sand remover can be discharged through the slag slurry outlet 10 at one time. During self-cleaning, a back flushing pipeline is led out from the pressure stabilizing tank 9, pressurized by a back flushing pump 12 and led to a tank back flushing port 13, and sand and stone trapped by each level of filter are flushed to the bottom of the tank 3 through a high-pressure spraying port 14 arranged on the tank 3. And the electromagnetic flap valve 11 is opened, sand and stone are discharged from the slag slurry outlet 10, so that automatic online cleaning can be realized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (7)

1. The utility model provides a general geothermal well degritting filters integrated device which characterized in that, degritting filters integrated device includes:
-a tank, the top of which is provided with a water outlet pipe and a back flushing port, the bottom of which is provided with a slurry outlet and a valve thereof;
-a multi-layer filtering desander, arranged in sequence in the tank from bottom to top;
-a flow conduit connected to a water inlet pipe, the flow conduit passing from above to below the filtering desander for guiding geothermal fluid to the lower part of the tank;
-a surge tank connected to the outlet pipe of the tank by a pipe, ensuring the stability of the geothermal well outlet system;
a backwash pump connected to the backwash port through a backwash pipe, the backwash pipe being provided with a valve;
-a high pressure spray nozzle provided in the upper part of the tank, connected to a back flush port, flushing the filter desander.
2. The integrated sand removal and filtration device according to claim 1, wherein the multi-layer filter sand remover is provided with three layers from bottom to top, and all the layers are of conical structures.
3. The integrated desanding and filtering device of claim 2, wherein the three-layer desander comprises, in order from bottom to top:
-a primary desander, provided as a bottom layer, for removing sand having a diameter of more than 1 cm;
-a secondary desander, provided as an intermediate layer, for removing sand with a diameter of more than 3 mm;
-a fine filtration desander, provided as a top layer, for removing sand with a diameter of more than 1 mm.
4. A sand removal and filtration integrated device as claimed in claim 3, wherein said fine filtration sand remover is a quartz sand fine filter.
5. The integrated desanding and filtering device of claim 3, wherein said primary desander, said secondary desander and said precision filtration desander are arranged in non-equidistant manner; the distance between the primary sand remover and the secondary sand remover is larger than the distance between the secondary sand remover and the precise filtering sand remover.
6. The integrated desanding and filtering device of claim 1, wherein the slurry outlet valve is an electromagnetic flap valve.
7. The integrated sand removal and filtration device according to claim 1, wherein the surge tank is provided with a water outlet pipe connected with a backwash pump as a backwash water source.
CN202320093655.2U 2023-01-31 2023-01-31 Integrated sand removal and filtration device for universal geothermal well Active CN220285703U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320093655.2U CN220285703U (en) 2023-01-31 2023-01-31 Integrated sand removal and filtration device for universal geothermal well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320093655.2U CN220285703U (en) 2023-01-31 2023-01-31 Integrated sand removal and filtration device for universal geothermal well

Publications (1)

Publication Number Publication Date
CN220285703U true CN220285703U (en) 2024-01-02

Family

ID=89337604

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320093655.2U Active CN220285703U (en) 2023-01-31 2023-01-31 Integrated sand removal and filtration device for universal geothermal well

Country Status (1)

Country Link
CN (1) CN220285703U (en)

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