Stainless steel extraction well system for steam repair

Abstract

The utility model relates to a stainless steel extraction well system for steam repair. The stainless steel extraction well system comprises an extraction well, a well head, a submersible pump, a PLC (Programmable Logic Controller) control cabinet, a liquid level sensor, a liquid flowmeter, a temperature, pressure and flow integrated monitor and a water stop valve, the extraction well comprises an upper pipe, a middle pipe and a lower pipe, the upper pipe and the lower pipe are solid pipes, the middle pipe is an open screen pipe, the top of the upper pipe is a well head, and the bottom of the upper pipe is a well body base; the well head is formed by connecting a tee joint with a steel pipe and sleeving the tee joint with a well cap; the well head is provided with an extraction opening and a sampling opening. The well cap is provided with a water pumping opening, a liquid level sensor wire hole and a submersible pump wire hole. A submersible pump and a liquid level sensor are arranged at the bottom of the extraction well, the water pumping pipe penetrates through a water pumping opening, extends out of the well and is connected with a branch pipe in parallel, a second water stop valve is arranged on the branch pipe to form a sampling opening, and a first water stop valve and a liquid flow meter are arranged on the water pumping pipe behind the branch pipe. The anti-blocking device can be remotely monitored and is good in anti-blocking effect.

Description

Technical Field

[0001] The utility model relates to the technical field of in-situ steam remediation of polluted land, in particular to a stainless steel extraction well system for steam remediation. Background Art

[0002] In-situ remediation technology is frequently used in active petrochemical sites, among which steam remediation technology is a technology that is very suitable for such sites. It uses waste heat steam in the plant area to heat the underground temperature, and then removes organic pollutants in the soil by extraction to achieve the purpose of purifying contaminated soil. However, in traditional steam remediation methods, the extraction wells used are prone to corrosion, wear and blockage due to long-term use and environmental factors, resulting in a short service life and the need for frequent replacement and maintenance. Especially in the treatment of high-temperature and high-pressure steam environments containing a large amount of pollutants, existing equipment often cannot meet the actual needs of control and monitoring. Therefore, it is very important to develop a stainless steel extraction well for steam remediation that can be used for a long time in soil remediation and improve collection efficiency. Utility Model Content

[0003] The utility model provides a stainless steel extraction well system for steam repair, so as to solve the technical problems of traditional steam extraction wells such as easy corrosion, wear, blockage and difficulty in data collection.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A stainless steel extraction well system for steam repair, comprising: an extraction well, a well head, a submersible pump, a PLC control cabinet, a liquid level sensor, a liquid flow meter, a temperature, pressure and flow integrated monitor, and a water stop valve; characterized in that:

[0006] The extraction well is an integrated well pipe with an inner cavity formed by a stainless steel solid pipe and an open screen pipe, which is connected from top to bottom. It includes an upper pipe 2, a middle pipe 3, and a lower pipe 4. The upper pipe and the lower pipe are solid pipes with closed pipe walls, and the middle pipe is an open screen pipe with vertical straight slit sieve holes 31 with a width of 1 mm on the entire pipe wall. The top of the upper pipe is the well head, and the bottom of the lower pipe is provided with a stainless steel well body base 5 that closes the well bottom.

[0007] The outside of the open screen tube is spirally wound with an anti-clogging filter screen 17 from top to bottom, and the mesh size of the filter screen is at least not less than 1 mm;

[0008] The wellhead 1 is composed of a stainless steel pipe connected to the upper end of a stainless steel tee and a stainless steel well cap screwed on the outer cover; the lower end of the wellhead is connected to the upper pipe through a stainless steel tee;

[0009] The extraction well head is provided with an air extraction port, a sampling port, and a water extraction port. The extraction well cap is provided with the water extraction port, a liquid level sensor line hole, and a submersible pump line hole. One of the three-way ports of the three-way is connected to the air extraction port to connect the air extraction pipe 6. The air extraction pipe is connected in series with a temperature, pressure, and flow integrated monitor 13 through a flange connection. The temperature, pressure, and flow integrated monitor is connected and controlled with a PLC control cabinet.

[0010] A submersible pump for extracting contaminated water is provided at the bottom of the extraction well, and the outlet flange of the submersible pump 7 is connected to a 316L stainless steel water pumping pipe 8, and the submersible pump is connected to a power supply through a power line 14 extending from the submersible pump line hole at the well head; the water pumping pipe passes through the water pumping port on the well cap and extends to the outside of the well, and the water pumping pipe is connected in parallel to a branch pipe outside the well head and is provided with a water stop valve 12 thereon to form the sampling port, and a water stop valve 11 and a liquid flow meter 10 are provided on the water pumping pipe behind the branch pipe, and the water pumping pipe and the submersible pump are both made of stainless steel; a liquid level sensor 9 for monitoring the water level in the well is provided on the top of the submersible pump at the bottom of the extraction well, and is extended from the liquid level sensor line hole at the well head through a liquid level sensor power line 15 to be connected to the PLC control cabinet for wiring and control.

[0011] The stainless steel extraction well system for steam repair, wherein: the extraction well pipe is a stainless steel solid pipe and a screen pipe, and the length of the open screen pipe at least reaches the vertical contamination depth.

[0012] The stainless steel extraction well system for steam repair, wherein: the extraction well PLC control cabinet is connected to the liquid level sensor and the temperature, pressure and flow integrated monitor through a power line.

[0013] The stainless steel extraction well system for steam repair, wherein: the extraction well uses connection lines and components made of high temperature resistant, high pressure resistant and corrosion resistant materials.

[0014] The stainless steel extraction well system for steam repair is described, wherein: the exhaust pipe is evacuated by a vacuum pump.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The flow rate, temperature and pressure integrated sensor and liquid level sensor provided in the utility model can remotely monitor the situation in the well in real time, ensuring the safety of use while improving the processing efficiency. The open screen design can effectively prevent solid particles and other impurities from entering the extraction system, reduce the maintenance frequency, and extend the service life of the equipment. The special anti-clogging filter design ensures that the extraction well can work smoothly even in liquids containing a large amount of suspended particles or sediments, extending the service life of the equipment. At the same time, the extraction well is made of stainless steel as a whole, which has good corrosion resistance and wear resistance, can resist corrosion by oxidation, acid, alkali and other chemical substances, and is suitable for various complex underground environments. The built-in flow rate, pressure and temperature integrated sensor, liquid level sensor and other equipment in the extraction well can monitor multiple key parameters in the well in real time, provide accurate data support, help to better understand and control the extraction process, and monitor in real time through the PLC control cabinet, which can effectively help improve the extraction efficiency and ensure the potential safety hazards in the extraction process.

[0017] The integrated flow, pressure and temperature monitor of the utility model can monitor the fluid dynamics in the well in real time, including flow and pressure, which helps to timely understand the operating status of the extraction system and facilitates data analysis and system optimization. The liquid level sensor can automatically detect the liquid level height. Combined with the control system, it can automatically start and stop the pump or adjust the operating frequency of the pump, thereby reducing manual intervention and improving operational efficiency. Stainless steel is easy to clean and maintain, and even if problems occur, it is easy to repair quickly, which is crucial to maintaining long-term stable operation of the system. Although the initial investment may be high, due to its durability and low maintenance cost, it can obtain real-time data in the well, improve extraction efficiency, and make it safer and more convenient to use, reducing manpower investment. In the long run, it has higher economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the utility model in which an open screen tube is spirally wound with an anti-clogging filter screen.

[0020] Figure 3 It is a schematic diagram of the extraction well pipe of the utility model.

[0021] Description of the accompanying drawings:

[0022] 1. Wellhead, 2. Upper pipe, 3. Middle pipe, 4. Lower pipe, 5. Well base, 6. Air suction pipe, 7. Submersible pump, 8. Water suction pipe, 9. Liquid level sensor, 10. Liquid flow meter, 11. Water stop valve one, 12. Water stop valve two, 13. Temperature, pressure and flow integrated monitor, 14. Submersible pump power cord, 15. Liquid level sensor power cord, 16. Temperature, pressure and flow integrated monitor power cord, 17 Anti-clogging filter screen, 18 Vacuum pump. DETAILED DESCRIPTION

[0023] Referring to Figures 1-3, a stainless steel extraction well system for steam repair of the utility model includes: an extraction well, a wellhead, a submersible pump, a PLC control cabinet, a liquid level sensor, a liquid flow meter, a temperature pressure flow integrated monitor, and a water stop valve; wherein,

[0024] The extraction well is an integrated well pipe with an inner cavity that runs vertically through a stainless steel solid pipe and an open screen pipe. Figure 3 As shown, it comprises three parts of the pipe body, namely, an upper pipe 2, a middle pipe 3 and a lower pipe 4, wherein the upper pipe and the lower pipe are solid pipes with closed pipe walls, the middle pipe is an open sieve pipe with vertical straight slit sieve holes 31 with a width of 1 mm on the whole pipe wall, the top of the upper pipe is provided with a well head, and the bottom of the lower pipe is provided with a stainless steel well body base 5 that closes the well bottom;

[0025] See also Figure 2 As shown, the outside of the open screen tube is spirally wound with an anti-clogging filter screen 17 from top to bottom, and the mesh size of the filter screen is at least not less than 1mm; 1mm or 2mm can be selected or the mesh size can be selected according to the site conditions;

[0026] The wellhead 1 is composed of a stainless steel pipe connected to the upper end of a stainless steel tee and a stainless steel well cap screwed on the outer cover; the lower end of the wellhead is connected to the upper pipe through a stainless steel tee;

[0027] The extraction well head is provided with an air extraction port, a sampling port, and a water extraction port. The extraction well cap is provided with the water extraction port, a liquid level sensor line hole, and a submersible pump line hole. One of the three-way ports of the three-way is connected to the air extraction port to connect the air extraction pipe 6. The air extraction pipe is connected in series with a temperature, pressure, and flow integrated monitor 13 through a flange connection. The temperature, pressure, and flow integrated monitor is connected and controlled by a PLC control cabinet. The air extraction pipe 6 is evacuated by a vacuum pump 18.

[0028] A submersible pump for extracting contaminated water is provided at the bottom of the extraction well, and the outlet flange of the submersible pump 7 is connected to a 316L stainless steel water pumping pipe 8, and the submersible pump is connected to a power supply through a power line 14 extending from the submersible pump line hole at the well head; the water pumping pipe passes through the water pumping port on the well cap and extends to the outside of the well, and the water pumping pipe is connected in parallel to a branch pipe outside the well head and is provided with a water stop valve 12 thereon to form the sampling port, and a water stop valve 11 and a liquid flow meter 10 are provided on the water pumping pipe behind the branch pipe, and the water pumping pipe and the submersible pump are both made of stainless steel; a liquid level sensor 9 for monitoring the water level in the well is provided on the top of the submersible pump at the bottom of the extraction well, and is extended from the liquid level sensor line hole at the well head through a liquid level sensor power line 15 to be connected to the PLC control cabinet for wiring and control.

[0029] The stainless steel extraction well system for steam repair, wherein: the extraction well pipe is a stainless steel solid pipe and a screen pipe, and the length of the open screen pipe at least reaches the vertical contamination depth.

[0030] The stainless steel extraction well system for steam repair, wherein: the extraction well PLC control cabinet is connected to the liquid level sensor and the temperature, pressure and flow integrated monitor through a power line.

[0031] The stainless steel extraction well system for steam repair, wherein: the extraction well uses connection lines and components made of high temperature resistant, high pressure resistant and corrosion resistant materials.

[0032] Example 1

[0033] See also Figure 1 , 2 , 3, this embodiment is further described in detail.

[0034] In practical applications, this embodiment is made of a well pipe made of 316L stainless steel material that is resistant to high temperature, high pressure and corrosion. The well pipe is composed of a Φ110mm solid pipe and a screen pipe. The well pipe is 15000mm long. The middle pipe 3 uses a straight-seam open screen pipe with a screen gap of 1mm. The open screen pipe is 10000mm long. The upper pipe 2 and the lower pipe 4 of the well pipe are closed solid pipes. The upper solid pipe is mainly used to prevent the polluted gas in the well from penetrating the soil, so that the exhaust port can extract the polluted gas. The screen pipe is mainly used to collect the polluted gas and sewage into the well. The lower pipe is mainly used to store the sewage in the well and part of the soil contained in the settled sewage for extraction.

[0035] The wellhead 1 is composed of a Φ100mm*Φ110mm*Φ50mm stainless steel tee, a 300mm long and 110mm diameter stainless steel pipe and a Φ110mm stainless steel well cap.

[0036] The wellhead is provided with an air extraction port, a sampling port and a water extraction port. The air extraction port is connected to a temperature, pressure and flow integrated monitor 13 , and the water extraction port is connected to a liquid flow meter 10 .

[0037] In actual applications, the exhaust pipe 6 is connected to the temperature, pressure and flow integrated monitor 13 by means of a flange connection, and the temperature, pressure and flow integrated monitor is connected to the PLC control cabinet by means of a power cord of the temperature, pressure and flow integrated monitor.

[0038] The submersible pump 7 is hoisted at the bottom of the extraction well by a stainless steel wire rope, and is connected to the power supply from the well head by a power line 14. The submersible pump and the wire rope are made of 316L stainless steel.

[0039] The lower end of the water pumping pipe 8 is connected to the water outlet of the submersible pump 7 through a flange connection. The submersible pump is connected to the power supply from the well head through a power line 14. The water pumping pipe is made of 316L stainless steel.

[0040] A liquid level sensor 9 is provided on the top of the submersible pump 7, which is connected to the PLC control cabinet from the well head through a power line 15. The liquid level sensor is made of 316L stainless steel.

[0041] A branch pipe is provided outside the wellhead of the pumping pipe, and a water stop valve 12 is provided on the branch pipe. The pumping pipe is provided with a water stop valve 11 connected to a liquid flow meter 10, and the liquid flow meter is made of 316L stainless steel.

[0042] The well body base 5 is made of sealed 316L stainless steel.

[0043] The power connection lines used in the extraction well are all made of high temperature resistant, high pressure resistant and corrosion resistant materials.

[0044] The extraction well screen pipe is a vertical straight seam screen pipe, which is divided into upper, middle and lower pipes, of which the upper pipe is a solid pipe, the middle pipe has a sieve hole of 1mm, and the bottom pipe is a solid pipe. A wire mesh is wrapped around the outside of the middle pipe of the screen pipe, and the wire mesh is firmly fixed by spiral winding, and the mesh hole of the filter wire mesh is at least not less than 1mm. This design is simpler in structure, and prevents soil from clogging the extraction well pipe during the extraction process, and can also achieve the effect of underground contaminated water and soil gas entering the extraction well for extraction treatment.

[0045] The extraction well is equipped with a liquid level sensor that can monitor the liquid level in the well in real time. When the liquid level reaches the sensor detection position, the PLC control cabinet will intelligently start the extraction well submersible pump to extract sewage. When the liquid level is lower than the sensor detection range, the submersible pump will be automatically shut down, and the vacuum extraction pump 18 will be started to extract the contaminated soil in the well through the air extraction pipe 6. This design reduces the investment in labor costs and avoids the probability of equipment failure.

[0046] The integrated temperature, pressure and flow monitor 13 is mainly used to monitor the temperature, pressure and liquid level flow in the well. Real-time monitoring of the well dynamics, wherein the temperature sensor adjusts the well extraction system and the heating equipment working parameters by monitoring the well temperature; wherein the pressure sensor can adjust the extraction equipment parameters through pressure data analysis to optimize the pollutant removal efficiency; wherein the liquid level flowmeter 10 mainly monitors the flow of extracted sewage in the well to ensure the normal operation of the extraction equipment. And through the equipped PLC control cabinet, the data transmitted by the sensor in real time can be analyzed to adjust the optimal extraction parameters, to ensure safe extraction while improving the efficiency of underground pollutant treatment and repair. The extraction well is simpler in structural design and layout, easy to disassemble and assemble, and can be reused many times. Through intelligent control, it reduces labor cost investment, and the equipment failure rate is lower and the maintenance cost is low.

[0047] The working principle of the stainless steel extraction well system is:

[0048] When the contaminated liquid from outside the extraction well enters the well through the screen and reaches the liquid level sensor recognition range, the submersible pump will extract the contaminated liquid in the well. When the contaminated liquid is lower than the sensor recognition range, the PLC control cabinet will automatically shut down the submersible pump. At this time, the PLC control cabinet will control the vacuum extraction equipment to extract the contaminated gas in the well through the suction port. In order to better understand the status of soil pollution remediation, the sewage in the well is sampled and tested through the sampling port regularly through manual sampling. At this time, the water stop valve 11 will be closed and the water stop valve 12 will be opened for sampling and testing. When the temperature, pressure and flow integrated monitor senses that the temperature in the well is too high, it will control the heating equipment through the PLC control cabinet to lower the heating temperature. When it recognizes that the air pressure in the well is lower than the detection parameter range set by the PLC control cabinet, it will automatically reduce the extraction rate of the contaminated gas in the well. When the liquid flow rate is continuously too low during the extraction of the contaminated liquid, the PLC control cabinet alarm system will be triggered to stop the extraction of the contaminated liquid and manually check whether the well pipe is blocked.

[0049] The utility model is described above in conjunction with the accompanying drawings, but the limitations of the utility model are not limited to the above embodiments. Under the enlightenment of the utility model, those skilled in the art can also have many forms without departing from the purpose of the utility model and the scope of protection of the claims, which all belong to the protection scope of the utility model.

Claims

1. A stainless steel extraction well system for steam repair, comprising: Extraction well, wellhead, submersible pump, PLC control cabinet, liquid level sensor, liquid flow meter, temperature pressure flow integrated monitor, water stop valve; characterized in that, The extraction well is an integrated well pipe with an inner cavity that is connected from top to bottom and is composed of a stainless steel solid pipe and an open screen pipe. It includes three pipe bodies: an upper pipe (2), a middle pipe (3), and a lower pipe (4). The upper pipe and the lower pipe are solid pipes with closed pipe walls, the middle pipe is an open screen pipe with vertical straight slit sieve holes (31) with a width of 1 mm distributed on the entire pipe wall, the top of the upper pipe is a well head, and the bottom of the lower pipe is provided with a stainless steel well body base (5) that closes the well bottom. The outside of the open screen tube is spirally wound with an anti-clogging filter screen (17) from top to bottom, and the mesh size of the filter screen is at least not less than 1 mm; The wellhead (1) is composed of a stainless steel tee with a stainless steel pipe connected to the upper end and a stainless steel well cap screwed on the outer cover; the lower end of the wellhead is connected to the upper pipe through a stainless steel tee; The extraction well head is provided with an air extraction port, a sampling port, and a water extraction port; the extraction well cap is provided with the water extraction port, a liquid level sensor line hole, and a submersible pump line hole; one of the three-way ports of the three-way is connected to the air extraction port to connect an air extraction pipe (6); the air extraction pipe is connected in series with a temperature, pressure, and flow integrated monitor (13) by means of a flange connection; the temperature, pressure, and flow integrated monitor is connected to a PLC control cabinet for control; A submersible pump for extracting polluted water is provided at the bottom of the extraction well. The outlet flange of the submersible pump (7) is connected to a 316L stainless steel water pumping pipe (8). The submersible pump is connected to a power supply through a power line (14) extending from the submersible pump line hole at the well head. The water pumping pipe passes through the water pumping port on the well cap and extends to the outside of the well. The water pumping pipe is connected in parallel to a branch pipe outside the well head and a water stop valve (12) is provided on the branch pipe to form the sampling port. A water stop valve (11) and a liquid flow meter (10) are provided on the water pumping pipe behind the branch pipe. The water pumping pipe and the submersible pump are both made of stainless steel. A liquid level sensor (9) for monitoring the water level in the well is provided on the top of the submersible pump at the bottom of the extraction well. The liquid level sensor power line (15) extends from the liquid level sensor line hole at the well head and is connected to the PLC control cabinet for wiring and control.

2. A stainless steel extraction well system for steam repair according to claim 1, characterized in that: The extraction well pipe is a stainless steel solid pipe and a screen pipe, and the length of the open screen pipe at least reaches the vertical contamination depth.

3. A stainless steel extraction well system for steam repair according to claim 1, characterized in that: The extraction well PLC control cabinet is connected to the liquid level sensor and the temperature, pressure and flow integrated monitor through a power line.

4. A stainless steel extraction well system for steam repair according to claim 1, characterized in that: The extraction well uses connection lines and components made of high temperature resistant, high pressure resistant and corrosion resistant materials.

5. A stainless steel extraction well system for steam repair according to claim 1, characterized in that: The exhaust pipe is evacuated by a vacuum pump.

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