K-type thermocouple geological borehole temperature measuring device and method

Abstract

The invention relates to the technical field of geological exploration, and discloses a K-type thermocouple geological borehole temperature measuring device, which comprises a thermocouple sensor module, a thermocouple temperature measuring module, a thermocouple temperature measuring module, a thermocouple temperature measuring module, a thermocouple temperature measuring module, a thermocouple temperature measuring module, a thermocouple temperature measuring module, a thermocouple temperature measuring module and a thermocouple temperature measuring module, and is characterized in that the thermocouple temperature measuring module comprises a nickel-chromium alloy thermode wire and a nickel-silicon alloy thermode wire; the nickel-chromium alloy thermode wire and the nickel-silicon alloy thermode wire are connected to form a hot end connection point, and the inner diameter bottom of the ceramic housing thermocouple sensor is fixedly connected with a thermode support. The thermocouple sensor with the ceramic shell is combined with the glass fiber high-temperature-resistant metal shielding insulating layer, so that the high-temperature-resistant performance of the device is improved, and the ceramic shell also has high-temperature-resistant and corrosion-resistant characteristics and is suitable for reducing gas or strong oxidizing gas environments, so that the sensor can resist the temperature of 1300 DEG C and can be used for drilling holes in geology with extremely high temperature; and the measurement range is wider.

Description

Technical Field

[0001] The present invention relates to the technical field of geological exploration, and in particular to a K-type thermocouple geological borehole temperature measuring device and method. Background Art

[0002] In geological exploration, borehole temperature measurement is extremely important for studying coalfield geology, geothermal geology, and hydrothermal metal geology. There are two main types of temperature measurement devices: thermometers, including maximum thermometers, resistance thermometers, and electronic thermometers, which are widely used in geological borehole temperature measurement; and thermocouples, including B-type, S-type, R-type, K-type, and tungsten-rhenium thermocouples. These are widely used in fields such as steel metallurgy and petrochemicals, but are rarely used in geological drilling.

[0003] The upper temperature measurement limit of traditional geological drilling temperature measurement devices usually does not exceed 200°C, which cannot meet the requirements of high-temperature environments in coalfields, geothermal fields or hydrothermal metal mine exploration. Although existing thermocouples can theoretically measure high temperatures, their practical applications are limited due to the poor temperature resistance of their sensor housing materials and the easy melting or carbonization of the wire insulation layer at high temperatures. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a K-type thermocouple geological drilling temperature measurement device and method, which solves the problems of being unable to meet the needs of high-temperature environments and having a small measurement range.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A K-type thermocouple geological borehole temperature measuring device, comprising: A thermocouple sensor module includes a nickel-chromium alloy thermoelectrode wire and a nickel-silicon alloy thermoelectrode wire. A ceramic shell thermocouple sensor is provided outside the nickel-chromium alloy thermoelectrode wire and the nickel-silicon alloy thermoelectrode wire. The nickel-chromium alloy thermoelectrode wire and the nickel-silicon alloy thermoelectrode wire are connected to form a hot end connection point. A thermoelectrode bracket is fixedly connected to the bottom of the inner diameter of the ceramic shell thermocouple sensor. The power supply and signal transmission line module includes a positive conductor and a negative conductor. The outer layers of the positive conductor and the negative conductor are wrapped with a metal shielding insulation layer. One end of the metal shielding insulation layer is connected to a shaking wire assembly. The shaking wire assembly is connected to the temperature display assembly via a plug-in connection end I and a connection end J. The positive conductor and the negative conductor are lowered into the geological borehole through a support assembly. The bottom of the positive conductor and the negative conductor are connected to the signal transmission assembly. The bottom of the temperature display assembly is provided with a power supply group module; The cold junction compensation component comprises a connection end A and a connection end B, wherein the connection end A and the connection end B are respectively connected to the nickel-chromium alloy thermoelectrode wire and the nickel-silicon alloy thermoelectrode wire of the thermocouple sensor module.

[0006] Preferably, the nickel-chromium alloy thermocouple wire and the nickel-silicon alloy thermocouple wire are fixed inside the ceramic shell thermocouple sensor through a thermocouple bracket and are exposed to the external temperature measurement environment through the hot end connection point. The ceramic shell thermocouple sensor of the thermocouple sensor module is combined with a metal shielding insulation layer, with a temperature resistance range of 200°C to 1300°C, and the metal shielding insulation layer has the characteristics of anti-electromagnetic interference and anti-oxidation-reduction reaction.

[0007] Preferably, the cold end compensation component includes a cold end compensator, and the cold end compensator is provided with a connection end C and a connection end D.

[0008] Preferably, the signal transmitting component includes a thermocouple transmitter, which is connected to the connection end C and the connection end D of the cold end compensator through the connection end E and the connection end F respectively. The connection between the connection end C and the connection end D and the thermocouple transmitter module is sealed. The interior of the thermocouple transmitter is filled with a glass fiber high-temperature resistant metal shielding insulation filling layer, and the outside of the thermocouple transmitter is fixed with a thermocouple sensor sealing cover to achieve module sealing.

[0009] Preferably, the positive wire is connected to the thermocouple transmitter through the connection end G, and the negative wire is connected to the thermocouple transmitter through the connection end H. The positive wire and the negative wire of the power and signal transmission line module adopt a two-wire transmission system, the signal transmission distance is not less than 50 meters, and the metal shielding insulation layer is a glass fiber high-temperature resistant metal shielding material.

[0010] Preferably, the support assembly includes two wellhead bases, the two wellhead bases are located outside the top of the geological borehole, a pulley bracket is fixedly connected between the tops of the two wellhead bases, a pulley is rotatably connected to the top of the pulley bracket, and the pulley is in contact with the metal shielding insulation layer wrapped around the outer layer of the positive and negative conductors.

[0011] Preferably, the temperature display component includes a temperature display instrument, which is provided with a temperature display instrument panel. The temperature display instrument is connected to the positive wire and the negative wire of the power supply and signal transmission line module through the connection terminal K and the connection terminal L respectively. The temperature display instrument is provided with a range switching knob, and the range switching knob is adapted to the temperature measurement range of -50°C to 1300°C, and the temperature data is displayed in real time through the temperature display instrument panel.

[0012] Preferably, the power supply group module includes a connection terminal O and a connection terminal P, and the connection terminal O and the connection terminal P are respectively connected to the positive wire of the power supply group and the negative wire of the power supply group, and are connected to the connection terminal M and the connection terminal N of the temperature display component through the positive wire of the power supply group and the negative wire of the power supply group. The power supply group module and the temperature display component are an integrated structure, and the power supply start and stop are controlled by a switch.

[0013] Preferably, the wire shaking assembly includes a wire shaking drum, the rear side of the wire shaking drum is rotatably connected to the wire shaking drum base, the front side of the wire shaking drum is rotatably connected to the shaking hand, the wire shaking assembly is connected to the positive wire and the negative wire of the power supply and signal transmission line module through its connection end I and connection end J respectively, the pulley of the support assembly is linked with the wire shaking assembly through the power supply and signal transmission line module to realize the lifting and lowering control of the device in the drilling hole.

[0014] A K-type thermocouple geological borehole temperature measurement method comprises the following steps: Fix the wellhead base of the support assembly to the outside of the top hole of the geological borehole, install a pulley bracket on the wellhead base, and install a pulley on the pulley bracket; Connect the positive and negative wires of the power and signal transmission line module to the swing wire assembly, temperature display assembly connection and power pack module in sequence; Lower the thermocouple sensor module, cold end compensation assembly and thermocouple transmitter to the target depth of the drilling hole via the pulley; Start the power pack module and read and record the temperature data at different depths through the temperature display; After the measurement is completed, the device is retracted through the wire shaking assembly, and each module is cleaned and stored.

[0015] The present invention provides a K-type thermocouple geological borehole temperature measurement device and method. It has the following beneficial effects: 1. In the present invention, by combining a ceramic shell thermocouple sensor with a glass fiber high-temperature resistant metal shielding insulation layer, the high-temperature resistance of the device is improved. The ceramic shell also has high-temperature resistance and corrosion resistance, and is suitable for reducing gas or strong oxidizing gas environments. The sensor can withstand temperatures of 1300°C and can be used in extremely high-temperature geological drilling, with a wider measurement range.

[0016] 2. The present invention adopts a glass fiber high-temperature resistant metal shielding insulation layer and a thermocouple sensor with a ceramic shell. The ceramic shell has high-temperature resistance and corrosion resistance and is suitable for reducing gas or strong oxidizing gas environments. The glass fiber insulation layer effectively isolates electromagnetic interference through the metal shielding design, avoiding the signal from being interfered with by the magnetic field or gas environment in the geological borehole during transmission, thereby effectively preventing electromagnetic interference and effectively preventing the redox reaction of the thermocouple wires and the power supply and signal transmission lines, thereby improving the durability and stability of the device and improving the accuracy of the measurement data.

[0017] 3. The present invention is connected to the nickel-chromium alloy thermoelectrode wire and the nickel-silicon alloy thermoelectrode wire of the thermocouple sensor module through the connection end A and the connection end B, and is linked to the thermocouple transmitter module through the connection end C and the connection end D, so as to ensure that the cold end temperature is constant while avoiding environmental interference. A cold end compensator is set at the cold end to compensate for the difference with the standard cold end temperature, thereby achieving the so-called cold end constant temperature, thereby reducing the measurement error caused by the change of the cold end temperature.

[0018] 4. The present invention enhances the millivolt signal output by the thermocouple into a standard voltage signal through a thermocouple transmitter module, and realizes long-distance stable transmission through the positive and negative wires in the power and signal transmission line module, reduces signal attenuation and noise interference, uses the power and signal transmission line to receive power, and at the same time enhances the millivolt signal output by the thermocouple sensor into a standard voltage signal, so that the signal transmission distance is longer.

[0019] 5. Compared with B-type, S-type and R-type thermocouple temperature measuring devices, the K-type of the present invention is cheaper and more suitable for mass production and practical application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a K-type thermocouple geological borehole temperature measuring device according to the present invention; Figure 2 The figure is a flow chart of a K-type thermocouple geological borehole temperature measurement method according to the present invention.

[0021] Among them, 1. Nickel-chromium alloy thermocouple wire; 2. Nickel-silicon alloy thermocouple wire; 3. Metal shielding insulation layer; 4. Ceramic shell thermocouple sensor; 5. Hot end connection point; 6. Thermocouple bracket; 7. Cold end compensator; 8. Connection end A; 9. Connection end B; 10. Connection end C; 11. Connection end D; 12. Thermocouple transmitter; 13. Connection end E; 14. Connection end F; 15. Connection end G; 16. Connection end H; 17. Metal shielding insulation filling layer; 18. Thermocouple sensor sealing cover; 19. Positive wire; 20. Negative Conductor; 21. Pulley; 22. Pulley bracket; 23. Wellhead base; 24. Wire drum; 25. Connection terminal I; 26. Connection terminal J; 27. Crank handle; 28. Wire drum base; 29. Temperature display; 30. Temperature display instrument panel; 31. Connection terminal K; 32. Connection terminal L; 33. Range switching knob; 34. Connection terminal M; 35. Connection terminal N; 36. Power supply module; 37. Connection terminal O; 38. Connection terminal P; 39. Switch; 40. Positive conductor of power supply; 41. Negative conductor of power supply; 42. Geological drilling hole. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] Please see the attached Figure 1 The embodiment of the present invention provides a K-type thermocouple geological drilling temperature measuring device, comprising: Thermocouple sensor module, including nickel-chromium alloy thermoelectrode wire 1 and nickel-silicon alloy thermoelectrode wire 2, including a ceramic shell thermocouple sensor 4 provided outside the nickel-chromium alloy thermoelectrode wire 1 and the nickel-silicon alloy thermoelectrode wire 2, the nickel-chromium alloy thermoelectrode wire 1 and the nickel-silicon alloy thermoelectrode wire 2 are connected to form a hot end connection point 5, and a thermoelectrode bracket 6 is fixedly connected to the bottom of the inner diameter of the ceramic shell thermocouple sensor 4; The power supply and signal transmission line module includes a positive conductor 19 and a negative conductor 20. The positive conductor 19 and the negative conductor 20 are wrapped with a metal shielding insulation layer 3. One end of the metal shielding insulation layer 3 is connected to a shaking wire assembly. The shaking wire assembly is connected to the temperature display assembly via a plug-in connection terminal I25 and a connection terminal J26. The positive conductor 19 and the negative conductor 20 are lowered into the geological borehole 42 through a support assembly. The bottom of the positive conductor 19 and the negative conductor 20 are connected to the signal transmission assembly. The bottom of the temperature display assembly is provided with a power supply group module 36; The cold junction compensation component includes a connection terminal A8 and a connection terminal B9, which are respectively connected to the nickel-chromium alloy thermoelectrode wire 1 and the nickel-silicon alloy thermoelectrode wire 2 of the thermocouple sensor module.

[0024] Based on the Seebeck effect, a closed loop made of two different materials, a nickel-chromium alloy thermocouple wire 1 and a nickel-silicon alloy thermocouple wire 2, is placed inside a ceramic-shelled thermocouple sensor 4. When the temperatures of the hot end and the cold end are different, a thermoelectric potential is generated in the loop, and the temperature is determined by measuring the thermoelectric potential.

[0025] The nickel-chromium alloy thermocouple wire 1 and the nickel-silicon alloy thermocouple wire 2 are fixed inside the ceramic shell thermocouple sensor 4 through the thermocouple bracket 6 and are exposed to the external temperature measurement environment through the hot end connection point 5. The ceramic shell thermocouple sensor 4 of the thermocouple sensor module is combined with the metal shielding insulation layer 3, with a temperature resistance range of 200°C to 1300°C, and the metal shielding insulation layer 3 has the characteristics of anti-electromagnetic interference and anti-oxidation-reduction reaction.

[0026] The cold end compensation assembly includes a cold end compensator 7 , and the cold end compensator 7 is provided with a connection end C10 and a connection end D11 .

[0027] The signal transmission component includes a thermocouple transmitter 12, which is connected to the connection end C10 and the connection end D11 of the cold end compensator 7 through the connection end E13 and the connection end F14 respectively. The connection between the connection end C10 and the connection end D11 and the thermocouple transmitter module 12 is sealed. The interior of the thermocouple transmitter 12 is filled with a glass fiber high-temperature resistant metal shielding insulation filling layer 17. A thermocouple sensor sealing cover 18 is fixed to the outside of the thermocouple transmitter 12 to achieve module sealing.

[0028] The signal output by the thermocouple transmitter 12 is a voltage symbol. In order to facilitate the operator, a temperature display instrument 29 is used to convert the voltage signal into a temperature display signal.

[0029] The positive wire 19 is connected to the thermocouple transmitter 12 through the connection end G15, and the negative wire 20 is connected to the thermocouple transmitter 12 through the connection end H16. The positive wire 19 and the negative wire 20 of the power and signal transmission line module adopt two-wire transmission. The signal transmission distance is not less than 50 meters, and the metal shielding insulation layer 3 is a glass fiber high-temperature resistant metal shielding material.

[0030] The support assembly includes two wellhead bases 23, which are located outside the top of the geological borehole. A pulley bracket 22 is fixedly connected between the tops of the two wellhead bases 23, and a pulley 21 is rotatably connected to the top of the pulley bracket 22. The pulley 21 is in contact with the metal shielding insulation layer 3 wrapped around the outer layer of the positive conductor 19 and the negative conductor 20.

[0031] The temperature display component includes a temperature display 29, which is provided with a temperature display instrument panel 30. The temperature display 29 is connected to the positive wire 19 and the negative wire 20 of the power supply and signal transmission line module through the connection terminal K31 and the connection terminal L32 respectively. The temperature display 29 is provided with a range switching knob 33. The range switching knob 33 is adapted to the temperature measurement range of -50°C to 1300°C, and the temperature data is displayed in real time through the temperature display instrument panel 30.

[0032] The power supply group module 36 includes a connection terminal O37 and a connection terminal P38, to which the positive power supply group wire 40 and the negative power supply group wire 41 are respectively connected, and are connected to the connection terminal M34 and the connection terminal N35 of the temperature display component through the positive power supply group wire 40 and the negative power supply group wire 41. The power supply group module 36 and the temperature display component are an integrated structure, and the power supply start and stop are controlled by the switch 39.

[0033] The wire-cranking assembly includes a wire-cranking drum 24, the rear side of which is rotatably connected to a wire-cranking drum base 28, and the front side of which is rotatably connected to a cranking handle 27. The wire-cranking assembly is connected to the positive conductor 19 and the negative conductor 20 of the power and signal transmission line module through its connection end I25 and connection end J26 respectively. The pulley 21 of the support assembly is linked to the wire-cranking assembly through the power and signal transmission line module to realize the lifting and lowering control of the device in the drilling hole.

[0034] Please see the attached Figure 2 A K-type thermocouple geological borehole temperature measurement method comprises the following steps: Secure the wellhead base 23 to the outside of the top opening of the geological borehole 42 with bolts or clips, ensuring that the base is level and stable. Then, install the pulley bracket 22 on the wellhead base 23 and secure the pulley 21 with screws so that it can rotate freely. Check that the groove of the pulley 21 matches the diameter of the positive conductor 19 and the negative conductor 20 wrapped by the metal shield insulation layer 3 to ensure that there is no slippage or obstruction when lowering the cables. Use the positive wire 19 and the negative wire 20 to connect the connection terminal I25 and the connection terminal J26, the connection terminal K31 and the connection terminal L32 respectively, then use the positive wire 40 and the negative wire 41 of the power supply group to connect the connection terminal M34 and the connection terminal N35 respectively, and then connect the connection terminal O37 and the connection terminal P38 respectively. Then, connect the positive wire 19 and the negative wire 20 of the power and signal transmission line to the connection terminal I25 and the connection terminal J26 of the wire drum module 24 respectively. Then, guide the other ends of the positive wire 19 and the negative wire 20 into the geological borehole 42 through the pulley 21, and connect them to the connection terminal G15 and the connection terminal H16 of the thermocouple transmitter module 12 in sequence; Manually rotate the handle 27 on the wire drum 24 to slowly release the positive wire 19 and the negative wire 20 of the power and signal transmission line, so that the ceramic shell thermocouple sensor 4, the cold end compensator 7 and the thermocouple transmitter 12 are smoothly lowered along the pulley 21 to the target depth. According to the drilling depth, observe the cable mark on the wire drum 24 in real time or confirm the lowering position through the dial to ensure that the sensor reaches the predetermined temperature measurement point; Turn on the switch 39 of the power pack module 36 to power the device, rotate the range switch knob 33 of the temperature display component to select the gear that is suitable for the current temperature measurement range, and observe the initial reading on the temperature display instrument panel 30 to confirm that the signal is stable and there is no abnormal fluctuation; Pause lowering at set intervals or at key depths in the borehole and record the temperature value corresponding to the current depth. For high-temperature sensitive areas, extend the dwell time to ensure data stability. Monitor temperature changes in real time through the temperature display panel 30. In case of signal interference, check whether the transmission line connection is loose and restart the power pack module 36 to reset the system. After the measurement is completed, shake the crank 27 in the opposite direction to retract the positive wire 19 and the negative wire 20 of the power and signal transmission line at a uniform speed, ensuring that the cables are neatly wound on the reel 24. When the ceramic shell thermocouple sensor is raised to the wellhead, turn off the power group switch 39, disconnect the connection terminals I25, J26, K31, L32, M34, N35, O37 and P38, and use clean water to clean the mud or corrosive substances attached to the surface of the ceramic shell thermocouple sensor 4, the cold end compensator 7 and the thermocouple transmitter 12. After drying, store them in a moisture-proof box. Remove the wellhead base 23 and support assembly, move to the next drilling location, and repeat the above steps. If long-term operation is required, regularly check whether the metal shielding insulation layer 3 of the positive conductor 19 and the negative conductor 20 of the transmission line is damaged, and test the compensation accuracy of the cold end compensator 7.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A K-type thermocouple geological drilling temperature measuring device, characterized in that: include: A thermocouple sensor module comprises a nickel-chromium alloy thermoelectrode wire (1) and a nickel-silicon alloy thermoelectrode wire (2), wherein a ceramic shell thermocouple sensor (4) is provided outside the nickel-chromium alloy thermoelectrode wire (1) and the nickel-silicon alloy thermoelectrode wire (2), the nickel-chromium alloy thermoelectrode wire (1) and the nickel-silicon alloy thermoelectrode wire (2) are connected to form a hot end connection point (5), and a thermoelectrode bracket (6) is fixedly connected to the bottom of the inner diameter of the ceramic shell thermocouple sensor (4); A power supply and signal transmission line module comprises a positive conductor (19) and a negative conductor (20), wherein the outer layers of the positive conductor (19) and the negative conductor (20) are wrapped with a metal shielding insulation layer (3), one end of the metal shielding insulation layer (3) is connected to a shaking wire assembly, and the shaking wire assembly is connected to a temperature display assembly via a plug-in connection terminal I (25) and a connection terminal J (26), the positive conductor (19) and the negative conductor (20) are lowered into a geological borehole (42) via a support assembly, the bottoms of the positive conductor (19) and the negative conductor (20) are connected to a signal transmission assembly, and a power supply group module (36) is provided at the bottom of the temperature display assembly; The cold end compensation component comprises a connection end A (8) and a connection end B (9), wherein the connection end A (8) and the connection end B (9) are respectively connected to the nickel-chromium alloy thermoelectrode wire (1) and the nickel-silicon alloy thermoelectrode wire (2) of the thermocouple sensor module.

2. A K-type thermocouple geological drilling temperature measuring device according to claim 1, characterized in that: The nickel-chromium alloy thermoelectrode wire (1) and the nickel-silicon alloy thermoelectrode wire (2) are fixed inside the ceramic shell thermocouple sensor (4) through the thermoelectrode bracket (6), and are exposed to the external temperature measurement environment through the hot end connection point (5). The ceramic shell thermocouple sensor (4) of the thermocouple sensor module is combined with the metal shielding insulation layer (3), and the temperature resistance range is 200° C. to 1300° C., and the metal shielding insulation layer (3) has the characteristics of anti-electromagnetic interference and anti-oxidation-reduction reaction.

3. A K-type thermocouple geological drilling temperature measuring device according to claim 1, characterized in that: The cold end compensation assembly comprises a cold end compensator (7), and the cold end compensator (7) is provided with a connection end C (10) and a connection end D (11).

4. A K-type thermocouple geological drilling temperature measuring device according to claim 1, characterized in that: The signal transmission component includes a thermocouple transmitter (12), and the thermocouple transmitter (12) is connected to the connection end C (10) and the connection end D (11) of the cold end compensator (7) through the connection end E (13) and the connection end F (14), respectively. The connection between the connection end C (10) and the connection end D (11) and the thermocouple transmitter module (12) is sealed. The interior of the thermocouple transmitter (12) is filled with a glass fiber high-temperature resistant metal shielding insulation filling layer (17). The exterior of the thermocouple transmitter (12) is fixed with a thermocouple sensor sealing cover (18) to achieve module sealing.

5. A K-type thermocouple geological drilling temperature measuring device according to claim 1, characterized in that: The positive conductor (19) is connected to the thermocouple transmitter (12) through the connection end G (15), and the negative conductor (20) is connected to the thermocouple transmitter (12) through the connection end H (16). The positive conductor (19) and the negative conductor (20) of the power supply and signal transmission line module adopt a two-wire transmission system, and the signal transmission distance is not less than 50 meters. The metal shielding insulation layer (3) is a glass fiber high-temperature resistant metal shielding material.

6. A K-type thermocouple geological drilling temperature measuring device according to claim 1, characterized in that: The support assembly includes two wellhead bases (23), the two wellhead bases (23) are located outside the top of the geological borehole, a pulley bracket (22) is fixedly connected between the tops of the two wellhead bases (23), and a pulley (21) is rotatably connected to the top of the pulley bracket (22), and the pulley (21) is in contact with the metal shielding insulation layer (3) wrapped around the outer layer of the positive conductor (19) and the negative conductor (20).

7. A K-type thermocouple geological drilling temperature measuring device according to claim 1, characterized in that: The temperature display assembly includes a temperature display instrument (29), which is provided with a temperature display instrument panel (30). The temperature display instrument (29) is connected to the positive lead (19) and the negative lead (20) of the power supply and signal transmission line module through a connection terminal K (31) and a connection terminal L (32), respectively. The temperature display instrument (29) is provided with a range switching knob (33), which is adapted to a temperature measurement range of -50°C to 1300°C, and displays temperature data in real time through the temperature display instrument panel (30).

8. The K-type thermocouple geological drilling temperature measuring device according to claim 1, characterized in that: The power supply module (36) includes a connection terminal O (37) and a connection terminal P (38), and the connection terminal O (37) and the connection terminal P (38) are respectively connected to the power supply positive wire (40) and the power supply negative wire (41), and are connected to the connection terminal M (34) and the connection terminal N (35) of the temperature display component through the power supply positive wire (40) and the power supply negative wire (41). The power supply module (36) and the temperature display component are an integrated structure, and the power supply start and stop are controlled by the switch (39).

9. A K-type thermocouple geological drilling temperature measuring device according to claim 1, characterized in that: The wire shaking assembly includes a wire shaking drum (24), the rear side of the wire shaking drum (24) is rotatably connected to a wire drum base (28), and the front side of the wire shaking drum (24) is rotatably connected to a cranking handle (27). The wire shaking assembly is connected to the positive lead (19) and the negative lead (20) of the power supply and signal transmission line module through its connection end I (25) and connection end J (26), respectively. The pulley (21) of the support assembly is linked to the wire shaking assembly through the power supply and signal transmission line module to realize the lifting and lowering control of the device in the drilling hole.

10. A K-type thermocouple geological drilling temperature measurement method, characterized in that: A K-type thermocouple geological borehole temperature measuring device for use in any one of claims 1 to 9, comprising the following steps: Fixing the wellhead base (23) of the support assembly to the outside of the top opening of the geological borehole (42), installing a pulley bracket (22) on the wellhead base (23), and installing a pulley (21) on the pulley bracket (22); Connect the positive lead (19) and the negative lead (20) of the power and signal transmission line module to the shaking wire assembly, the temperature display assembly connection and the power group module (36) in sequence; Lowering the thermocouple sensor module, the cold end compensation assembly and the thermocouple transmitter 12) to the target depth of the drilling hole via the pulley (21); Start the power pack module (36), and read and record the temperature data at different depths through the temperature display instrument (29); After the measurement is completed, the device is retracted through the wire shaking assembly, and each module is cleaned and stored.

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