A geothermal well parameter comprehensive measuring device

Abstract

The utility model discloses a kind of geothermal well parameter comprehensive measuring devices, including guide pressure measuring tube, high-pressure air pump and comprehensive measurement and control box, comprehensive measurement and control box include measurement valve block, intelligent controller, DC power supply and remote communication module, one-way valve is provided in measurement valve block, pressure sensor is provided on measurement valve block, measurement valve block is connected with guide pressure measuring tube by guide pressure tube connection port, the lower end of guide pressure measuring tube is located in geothermal well, remote communication module and DC power supply are simultaneously connected by intelligent controller, intelligent controller is also simultaneously connected combustible gas sensor, remote flowmeter and water temperature sensor.High-pressure air pump is pumped into guide pressure measuring tube by one-way valve with high-pressure gas, the balanced condition of pressure in guide pressure measuring tube is monitored by pressure sensor, and then the depth of geothermal well is calculated, it is convenient to operate, accurate, without using the method of installing under water and measuring with input type pressure transmitter, greatly reduce the measurement cost.

Description

Technical Field

[0001] This utility model belongs to the field of geothermal well measurement technology, and in particular relates to a comprehensive measurement device for geothermal well parameters. Background Technology

[0002] The water level, outlet temperature, outlet flow rate, and wellhead combustible gas concentration of geothermal wells are important operating parameters. Measuring, recording, summarizing, and organizing these parameters, and adjusting production equipment and controlling safety equipment based on changes in these parameters, is of great significance for protecting and utilizing geothermal resources and ensuring safe production.

[0003] Currently, the detection of geothermal well outlet water temperature, combustible gas concentration, and outlet water flow rate mostly employs discrete instruments. Geothermal well water level measurement is sometimes done manually using electrode methods, and sometimes using submersible pressure transmitters installed underwater. The harsh environment of high temperature, high pressure, and high humidity in geothermal wells poses a severe challenge to electronic components, sealing structures, and cable sealing layers. Water level measurement devices with submerged pressure transmitters in geothermal wells are expensive, have a high failure rate, and are not repairable, increasing operating costs. Utility Model Content

[0004] To address the above problems, this utility model provides a comprehensive measurement device for geothermal well parameters.

[0005] This utility model is implemented as follows: A comprehensive measurement device for geothermal well parameters includes a pressure-conducting measuring pipe, the lower end of which is installed inside the geothermal well. It also includes a high-pressure air pump and a comprehensive control box. The high-pressure air pump pumps air, and the comprehensive control box controls each working component. The high-pressure air pump is connected to the comprehensive control box, which contains a measuring valve block, an intelligent controller, a DC power supply, and a remote communication module. The intelligent controller provides control, the DC power supply provides power, and the remote communication module transmits signals. A one-way valve is installed inside the measuring valve block to limit its position. A pressure sensor is installed on the measuring valve block and is connected to the one-way valve to measure pressure. The pressure sensor is electrically connected to the intelligent controller and transmits the measured value to the intelligent controller. A pressure-conducting pipe connection port is opened on the measuring valve block, connected to the air outlet of the one-way valve, and connected to the pressure-conducting measuring pipe. The pressure sensor measures the pressure inside the pressure-conducting measuring pipe. The intelligent controller is simultaneously connected to a remote communication module and a DC power supply. The remote communication module is signal-connected to the control center computer. The intelligent controller transmits the obtained values ​​to the control center computer through the remote communication module for intuitive display. The intelligent controller is also simultaneously connected to a combustible gas sensor, a remote flow meter, and a water temperature sensor. The combustible gas sensor is installed at the wellhead of the geothermal well to detect the combustible gas ejected from the wellhead. The remote flow meter and water temperature sensor are installed on the pump pipe. The flow rate through the pump pipe is monitored by the remote flow meter, and the water temperature sensor is monitored by the water temperature sensor.

[0006] Preferably, an electromagnetic valve is provided on the outside of the measuring valve block. The electromagnetic valve is electrically connected to the intelligent controller, which controls the opening and closing of the electromagnetic valve. One end of the electromagnetic valve is connected to the air inlet of a one-way valve, and the other end of the electromagnetic valve is connected to an exhaust silencer pipe. The end of the exhaust silencer pipe is located outside the integrated measurement and control box, and exhaust is carried out through the exhaust silencer pipe.

[0007] Preferably, the measuring valve block is provided with an air pump connection port, which connects the air inlet of the one-way valve and the solenoid valve. The outlet of the high-pressure air pump is connected to the air pump connection port. When the high-pressure air pump is started, the high-pressure gas in the high-pressure air pump pushes open the one-way valve and enters the pressure measuring tube.

[0008] Preferably, the power supply line of the high-pressure air pump is connected to the contactor, and the intelligent controller is electrically connected to the contactor. The intelligent controller controls the start and stop of the high-pressure air pump through the contactor.

[0009] Preferably, the integrated control box is equipped with an external alarm, and the integrated control box is equipped with an external control terminal. The intelligent controller and the external alarm are connected to the external control terminal at the same time. When the intelligent controller detects an abnormal value, it controls the external alarm to sound an alarm.

[0010] Preferably, a bell jar is provided at the lower end of the pressure measuring tube.

[0011] Preferably, the integrated measurement and control box is equipped with a touch screen for touch control, and the touch screen is simultaneously connected to the intelligent controller and the DC power supply.

[0012] The beneficial effects of this utility model are: the high-pressure air pump pumps high-pressure gas into the pressure measuring tube through a one-way valve, and the pressure balance in the pressure measuring tube is monitored by a pressure sensor, thereby calculating the depth of the geothermal well. It is easy to operate and accurate to measure, and there is no need to use the method of installing an underwater submersible pressure transmitter for measurement, which greatly reduces the measurement cost. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the structure of this utility model; In the diagram: 1. Pressure measuring pipe; 2. Geothermal well; 3. High-pressure air pump; 4. Integrated control box; 5. Measuring valve block; 6. Intelligent controller; 7. DC power supply; 8. Remote communication module; 9. Check valve; 10. Pressure sensor; 11. Pressure pipe connection port; 12. Control center computer; 13. Combustible gas sensor; 14. Remote flow meter; 15. Water temperature sensor; 16. Pump pipe; 17. Solenoid valve; 18. Exhaust silencer pipe; 19. Air pump connection port; 20. Contactor; 21. External alarm; 22. External control terminal; 23. Bell jar; 24. Touch screen. Detailed Implementation

[0014] To better understand the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, further illustrates this utility model.

[0015] like Figure 1The device shown is a comprehensive measurement device for geothermal well parameters, including a pressure measuring pipe 1, the lower end of which is installed inside a geothermal well 2. It also includes a high-pressure air pump 3 and a comprehensive control box 4. The high-pressure air pump 3 pumps air, and the comprehensive control box 4 controls each working component. The high-pressure air pump 3 is connected to the comprehensive control box 4. The comprehensive control box 4 includes a measuring valve block 5, an intelligent controller 6, a DC power supply 7, and a remote communication module 8. The intelligent controller 6 provides control, the DC power supply 7 provides power, and the remote communication module 8 transmits signals. A one-way valve 9 is installed inside the measuring valve block 5 to limit its position. A pressure sensor 10 is installed on the measuring valve block 5 and is connected to the one-way valve 9 to measure pressure. The pressure sensor 10 is electrically connected to the intelligent controller 6 and transmits the measured value to the intelligent controller 6. A pressure-conducting pipe connection port 11 is provided on the measuring valve block 5. The port 11 is connected to the outlet of the one-way valve 9. The pressure guide pipe connection port 11 is connected to the pressure guide measuring pipe 1. The lower end of the pressure guide measuring pipe 1 is equipped with a bell jar 23. The pressure sensor 10 measures the pressure inside the pressure guide measuring pipe 1. The intelligent controller 6 is simultaneously connected to the remote communication module 8 and the DC power supply 7. The remote communication module 8 is connected to the control center computer 12. The intelligent controller 6 transmits the obtained values ​​to the control center computer 12 through the remote communication module 8 for intuitive display. The intelligent controller 6 is also simultaneously connected to the combustible gas sensor 13, the remote flow meter 14, and the water temperature sensor 15. The combustible gas sensor 13 is set at the wellhead of the geothermal well 2 to detect the combustible gas ejected from the wellhead of the geothermal well 2. The remote flow meter 14 and the water temperature sensor 15 are set on the pump pipe 16. The flow rate through the pump pipe 16 is monitored by the remote flow meter 14, and the water temperature in the geothermal well 2 is monitored by the water temperature sensor 15.

[0016] An electromagnetic valve 17 is externally mounted on the measuring valve block 5. The electromagnetic valve 17 is electrically connected to the intelligent controller 6, which controls the opening and closing of the electromagnetic valve 17. One end of the electromagnetic valve 17 is connected to the inlet of the one-way valve 9, and the other end is connected to an exhaust silencer pipe 18. The end of the exhaust silencer pipe 18 is located outside the integrated measurement and control box 4, and exhaust is achieved through the exhaust silencer pipe 18. An air pump connection port 19 is provided on the measuring valve block 5. This port connects both the inlet of the one-way valve 9 and the electromagnetic valve 17. The outlet of the high-pressure air pump 3 is connected to the air pump connection port 19. When the high-pressure air pump 3 is started, the high-pressure gas in the high-pressure air pump 3 pushes open the one-way valve 9 and enters the pressure measuring tube 12.

[0017] The power cord of the high-pressure air pump 3 is connected to the contactor 20, and the intelligent controller 6 is electrically connected to the contactor 20. The intelligent controller 6 controls the opening and closing of the high-pressure air pump 3 through the contactor 20.

[0018] An external alarm 21 is installed on the integrated control box 4, and an external control terminal 22 is installed inside the integrated control box 4. The intelligent controller 6 and the external alarm 21 are connected to the external control terminal 22 at the same time. When the intelligent controller 6 detects an abnormal value, it controls the external alarm 21 to sound an alarm.

[0019] The integrated measurement and control box 4 is equipped with a touch screen 24 for touch control. The touch screen 24 is also connected to the intelligent controller 6 and the DC power supply 7.

[0020] When measuring the water level of geothermal well 2, first open solenoid valve 17 and depressurize for 3 seconds through exhaust silencer pipe 18. Then, start high-pressure air pump 3 and close solenoid valve 17. High-pressure air enters measuring valve block 5, opens check valve 9, and injects high-pressure air into pressure measuring pipe 1, expelling the water that has entered pressure measuring pipe 1. Then, close high-pressure air pump 3, and check valve 9 also closes. Pressure measuring pipe 1, measuring valve block 5, and pressure sensor 10 form a closed cavity. At the lower port of pressure measuring pipe 1, if the gas pressure inside the pipe is higher than the water pressure outside the pipe, the gas inside the pipe will gradually overflow, and the pressure value measured by pressure sensor 10 will also decrease accordingly. When the gas pressure inside the lower port of pressure measuring pipe 1 is equal to the water pressure outside the pipe, the air inside the pipe no longer overflows, the gas inside the pipe no longer flows, and the pressure detected by pressure sensor 10 no longer decreases. The gas inside the pipe reaches a static equilibrium state.

[0021] The intelligent controller 6 calculates the pressure reduction rate in real time. When the pressure reduction rate falls below a set value, the pressure is considered to have reached equilibrium. Based on this pressure value and the pipe depth (the depth of the lower end of the pressure measuring pipe 1), the water level in the geothermal well 2 can be calculated. Gas pressure inside bell jar 23 = Indicated pressure + air density * (Indicated pressure / standard atmosphere + 1) * 273 / (273 + 60) * gravitational acceleration * depth of bell jar Water level depth = depth of bell jar position - gas pressure inside bell jar / (gravitational acceleration * density of water at 60 degrees Celsius), geothermal water temperature is approximately 60 degrees Celsius.

[0022] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A comprehensive measurement device for geothermal well parameters, comprising a pressure-conducting measuring pipe, the lower end of which is disposed inside the geothermal well, characterized in that, It also includes a high-pressure air pump and an integrated measurement and control box. The high-pressure air pump is connected to the integrated measurement and control box, which contains a measuring valve block, an intelligent controller, a DC power supply, and a remote communication module. The measuring valve block contains a one-way valve and a pressure sensor, which is connected to the one-way valve and electrically connected to the intelligent controller. The measuring valve block has a pressure-conducting pipe connection port, which is connected to the air outlet of the one-way valve and to a pressure-conducting measuring pipe. The intelligent controller is simultaneously connected to a remote communication module and a DC power supply. The remote communication module is connected to the control center computer via signal. The intelligent controller is also simultaneously connected to a combustible gas sensor, a remote flow meter, and a water temperature sensor. The combustible gas sensor is installed at the wellhead of the geothermal well, and the remote flow meter and water temperature sensor are installed on the pump pipe.

2. The geothermal well parameter comprehensive measurement device according to claim 1, characterized in that, An electromagnetic valve is installed on the outside of the measuring valve block. The electromagnetic valve is electrically connected to the intelligent controller. One end of the electromagnetic valve is connected to the air inlet of the one-way valve, and the other end of the electromagnetic valve is connected to an exhaust silencer pipe. The end of the exhaust silencer pipe is located outside the integrated measurement and control box.

3. The geothermal well parameter comprehensive measurement device according to claim 2, characterized in that, The measuring valve block is provided with an air pump connection port, which connects the air inlet of the one-way valve and the solenoid valve. The outlet of the high-pressure air pump is connected to the air pump connection port.

4. The geothermal well parameter comprehensive measurement device according to claim 1, characterized in that, The power cord of the high-pressure air pump is connected to the contactor, and the intelligent controller is electrically connected to the contactor.

5. The geothermal well parameter comprehensive measurement device according to claim 1, characterized in that, An external alarm is installed on the integrated measurement and control box, and an external control terminal is installed inside the integrated measurement and control box. The intelligent controller and the external alarm are both connected to the external control terminal.

6. The geothermal well parameter comprehensive measurement device according to claim 1, characterized in that, A bell jar is provided at the lower end of the pressure measuring tube.

7. The geothermal well parameter comprehensive measurement device according to claim 1, characterized in that, The integrated measurement and control box is equipped with a touch screen, which is connected to both the intelligent controller and the DC power supply.

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