CN117027771B - Geothermal investigation and geothermal temperature measuring device - Google Patents
Geothermal investigation and geothermal temperature measuring device Download PDFInfo
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- CN117027771B CN117027771B CN202311087814.9A CN202311087814A CN117027771B CN 117027771 B CN117027771 B CN 117027771B CN 202311087814 A CN202311087814 A CN 202311087814A CN 117027771 B CN117027771 B CN 117027771B
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- rod
- temperature
- drill
- geothermal
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- 238000011835 investigation Methods 0.000 title description 2
- 239000000523 sample Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 33
- 238000007790 scraping Methods 0.000 claims description 18
- 238000002955 isolation Methods 0.000 claims description 8
- 230000000670 limiting effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000002829 reductive effect Effects 0.000 abstract description 6
- 239000011435 rock Substances 0.000 abstract description 4
- 239000002689 soil Substances 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The invention relates to the technical field of geothermal exploration, in particular to a geothermal exploration and geothermal measurement device, which comprises: the drill rods can be connected in sequence in a threaded connection mode; the drill rod is internally provided with a liquid channel for cooling the drill rod, and the liquid channel is connected with an external water source; temperature measurement subassembly, install the temperature measurement subassembly that is used for measuring ground temperature in the drilling rod, the drilling rod includes: a main rod; the convex rail is symmetrically arranged on the inner wall of the main rod and extends along the axial direction; and the supporting rod is connected with the convex rail in a sliding manner. According to the telescopic structure design of the drill rod, the temperature measuring assembly can be retracted and placed in the supporting rod to be isolated from the external environment during the non-use period, so that friction and collision between a probe in the temperature measuring assembly and soil and rock in a stratum are reduced, and frequent replacement of parts of equipment caused by damage to the probe is avoided.
Description
Technical Field
The invention relates to the technical field of geothermal exploration, in particular to a geothermal exploration and geothermal measurement device.
Background
Geothermal resources refer to renewable thermal energy stored inside the earth, generally concentrated at the edges of the structural panels, originating from the decay of the earth's molten magma and radioactive materials. The earth is like a large boiler, the deep part of the earth stores huge heat energy, and under the control of geological factors, the heat energy can be gathered to a certain range of the earth crust in the forms of hot steam, hot water, dry hot rock and the like, and if the condition of exploitation and utilization is achieved, geothermal resources with exploitation significance are formed.
The geothermal exploration aims at determining a geothermal abnormal area and searching for thermal fluid or thermal storage with occurrence temperature reaching the use purpose. The basic principle of geothermal exploration is: the heat of the geothermal abnormal region can be continuously diffused to the ground surface through the heat conduction effect, so that the geothermal abnormal region can be defined through temperature measurement and natural heat flow measurement at a certain depth below the ground surface, the distribution range of underground water and the distribution section of high-temperature underground hot water can be approximately deduced, the ground temperature refers to the temperature at a certain depth below the earth surface, and the measurement of the ground temperature has important significance in the fields of geological exploration, geothermal resource development, underground water resource utilization and the like.
When the drill bit drives the drill rod to rotationally drill, the probe of the temperature detector is easy to collide and rub with soil and rock in the stratum, so that the probe is damaged, and when the temperature measurement is carried out, drill cuttings are easy to exist around the probe, so that the temperature measurement is disturbed, the measurement data is inaccurate, and the reference value is reduced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a geothermal exploration and geothermal measurement device.
The technical scheme of the invention is as follows: a geothermal survey and geothermal measurement apparatus comprising: the drill rods are sequentially connected in a threaded connection mode; the drill rod is internally provided with a liquid channel for cooling the drill rod, and the liquid channel is connected with an external water source; temperature measurement subassembly, install the temperature measurement subassembly that is used for measuring ground temperature in the drilling rod, the drilling rod includes: a main rod; the convex rail is symmetrically arranged on the inner wall of the main rod and extends along the axial direction; the support rod is in sliding connection with the convex rail, the support rod can move axially relative to the main rod, and the bottom end of the support rod is connected with the drill bit; the temperature measuring assembly is arranged on the supporting rod, the supporting rod can be kept in a retracted state in the drilling process, and the temperature measuring assembly is not contacted with the outside.
In one embodiment, the drill rod further comprises: the fixed pipe is arranged in the main rod and is positioned on the upper side of the support rod; the electric push rod is arranged on the fixed pipe, and the movable part of the electric push rod is fixedly connected with the supporting rod.
In one embodiment, the temperature sensing assembly comprises: the frame body is fixedly arranged in the support rod, and sliding grooves in the horizontal direction are symmetrically formed in the side face of the frame body; the sliding block can horizontally slide along the sliding groove relative to the frame body; the temperature detector is arranged in the frame body and is pulled out in a sliding way, a through groove for the temperature detector to pass through is formed in the supporting rod, and the temperature detector is fixedly connected with the sliding block; the probe is arranged on the temperature detector, and extends out of the side face of the supporting rod along with the temperature detector.
In one embodiment, two temperature detectors are symmetrically arranged in the frame, an elastic piece is connected between the temperature detectors, the temperature detectors are close to each other under the action of the elastic piece, and two groups of probes are arranged on the side surfaces of the temperature detectors.
In one embodiment, the temperature sensor and the probe are further provided with an extending mechanism for controlling the extending of the temperature sensor and the probe, and the extending mechanism comprises: the bracket is arranged in the fixed pipe and can axially slide along the fixed pipe; the connecting rod is hinged between the bottom end of the support and the sliding block, and when the support falls down, the connecting rod rotates to push the sliding block to horizontally move; the limiting block is arranged at the lower side inside the fixed pipe and can limit the support to slide out of the lower side of the fixed pipe.
In one embodiment, there is also included a scraping mechanism for scraping mud adhered to a probe surface, the scraping mechanism including: the scraping plate is arranged on the side face of the frame body, and a guide hole matched with the probe is formed in the scraping plate.
In one embodiment, the device further comprises an isolation mechanism for further improving the accuracy of the geothermal measurement, the isolation mechanism comprising: the circular cylindrical cavity is formed by enclosing the convex rail, the support rod and the main rod together; the cylinder body is sleeved outside the bottom end of the main rod and is communicated with the circular cylinder cavity; the first air bag is fixedly arranged on the outer side of the main rod; the second air bag is fixedly arranged on the outer side of the supporting rod and arranged below the cylinder body; the first air bag and the second air bag are communicated through a connecting pipe, and the connecting pipe is communicated with the cylinder body.
In one embodiment, the connecting tube is a telescopic corrugated tube, and the connecting tube is unfolded and stretched when the support rod slides and stretches out relative to the main rod.
In one embodiment, there is also included a shut-off mechanism for shutting off the passage of liquid within the drill pipe, the shut-off mechanism comprising: the first cover plate is fixedly arranged in the fixed pipe; the support rod is fixedly connected with the top end of the support; the second apron, the bracing piece top is equipped with discoid second apron.
In one embodiment, the first cover plate and the second cover plate are provided with a plurality of water passing holes which are centrosymmetric, the positions of the water passing holes on the first cover plate and the second cover plate are staggered, and when the first cover plate is attached to the second cover plate, the water passing holes are blocked.
The beneficial effects are that: 1. according to the invention, through the telescopic structure design of the drill rod, the temperature measuring assembly can be retracted and placed in the supporting rod to be isolated from the external environment during the non-use period, so that friction and collision between a probe in the temperature measuring assembly and soil and rock in a stratum are reduced, frequent replacement of parts of equipment caused by damage of the probe is avoided, the service life of the equipment is prolonged, and the use cost of the equipment in the process of measuring the ground temperature is reduced;
2. according to the temperature measuring device, the temperature measuring assembly is matched with the extending mechanism, so that the temperature detector can extend out of the frame body along with the movement and unfolding of the support rod or can slide back into the frame body along with the movement and folding of the support rod, and four groups of data can be measured at the same depth through the temperature detectors with two groups of probes symmetrically arranged in the frame body when the temperature is measured, and further, the accuracy of measurement can be improved by comparing and screening abnormal data, taking an average value and the like;
3. according to the invention, the scraping mechanism is designed, so that when the probe is retracted, mud and the like attached to the surface of the probe can be scraped off through the scraping plate, the probe is kept clean, and the influence of the mud and the like attached to the surface on temperature measurement is avoided;
4. according to the invention, through the arrangement of the isolation mechanism, the first air bag and the second air bag on the upper side and the lower side can be controlled to be inflated timely by virtue of the space volume change of the circular cylindrical cavity caused by the movement of the support rod, so that the temperature detector is separated from the upper side area of the first air bag and the lower side area of the second air bag, and the interference of drill cuttings and the like entering the measurement area to temperature measurement is avoided;
5. according to the invention, the shutoff mechanism is arranged, so that the liquid channel in the drill rod can be automatically intercepted during the temperature measurement, the influence of heat exchange caused in the liquid flowing process on the ground temperature measurement is avoided, and the accuracy of the temperature measurement is improved.
Drawings
The above and other objects, features and advantages of embodiments of the present invention will become more readily apparent from the following detailed description with reference to the accompanying drawings. In the drawings, embodiments of the invention will be described by way of example and not limitation.
Fig. 1 shows a schematic perspective view of the present invention.
Fig. 2 shows a schematic internal structure of the present invention.
Figure 3 shows a cross-section of the drill rod of the present invention.
Fig. 4 shows a schematic perspective view of the drill rod of the present invention in its deployed state.
FIG. 5 shows a schematic perspective view of the temperature measuring assembly of the present invention.
FIG. 6 shows an enlarged view of a portion of the temperature sensing assembly of the present invention.
Fig. 7 shows a schematic perspective view of the extension mechanism of the present invention.
Fig. 8 shows a schematic perspective view of the scraping mechanism of the present invention.
Fig. 9 shows a schematic perspective view of the isolation mechanism of the present invention.
Fig. 10 shows a schematic perspective view of the shutoff mechanism of the invention.
Fig. 11 shows a partial enlarged view of the shutoff mechanism of the invention.
In the reference numerals: the device comprises a drill rod, a main rod, a protruding rail, a supporting rod, a fixed pipe, an electric pushing rod, a drill bit, a temperature measuring component, a frame, a sliding block, a temperature detector, a probe, a 35 elastic component, a 4-stretching mechanism, a bracket, a connecting rod, a limiting block, a scraping mechanism, a scraping plate, a 52-guiding hole, a 6-isolating mechanism, a cylindrical chamber, a cylinder, a first air bag, a second air bag, a connecting pipe, a 7-intercepting mechanism, a cover plate, a support rod, a cover plate and a water passing hole.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are illustrated in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The term "comprising" and variations thereof as used herein means open ended, i.e., "including but not limited to. The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment. The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like, may refer to different or the same object.
Example 1: a geothermal survey and geothermal measurement apparatus, as shown in fig. 1-6, comprising: the drill rod 1 is of a hollow structure, the tail end of the drill rod 1 is provided with threads, the length of the drill rod 1 is 9 meters, the wall thickness is 9-11mm, and the drill rods 1 are sequentially connected in a threaded connection mode; the drill bit 2 is connected with the bottom end of the drill rod 1, the drill bit 2 is a typical tricone bit or an assembled multi-cone bit, teeth of the drill bit 2 are made of high-strength high-toughness hard alloy materials, a liquid channel for cooling the drill bit 2 is arranged in the drill rod 1, the liquid channel is connected with an external water source, and an adaptive heat dissipation channel is arranged in the drill bit 2; temperature measurement subassembly 3, install the temperature measurement subassembly 3 that is used for measuring the ground temperature in the drilling rod 1, drilling rod 1 includes: a main rod 11, wherein the main rod 11 is of a hollow structure; the inner wall of the main rod 11 is symmetrically provided with four convex rails 12 extending along the axial direction; the support rod 13 is in sliding connection with the convex rail 12, the support rod 13 can move axially relative to the main rod 11, the support rod 13 is of a hollow structure, a gap is reserved between the surface of the support rod 13 and the inner wall of the main rod 11, and the bottom end of the support rod 13 is connected with the drill bit 2; the temperature measuring assembly 3 is arranged in the supporting rod 13, the supporting rod 13 can be kept in a retracted state in the drilling process, and the temperature measuring assembly 3 is not contacted with the outside; a fixed pipe 14, wherein a hollow fixed pipe 14 is welded in the main rod 11, and the fixed pipe 14 is positioned on the upper side of the support rod 13; the electric push rods 15 are arranged on the fixed pipes 14 through bolts, the electric push rods 15 axially parallel to the fixed pipes are symmetrically arranged on the electric push rods 15, and movable parts of the electric push rods 15 are fixedly connected with the supporting rods 13 through bolts.
When the ground temperature measurement is carried out, the rotary drilling of the drill bit 2 drives the drill rod 1 to synchronously rotate and move, at the moment, the drill rod 1 is in a retracted state, the length of the drill rod 1 is smaller than the sum of the lengths of the main rod 11 and the supporting rod 13, a through groove on the supporting rod 13 for the temperature detector 33 to extend is covered by the main rod 11, the temperature measuring component 3 is not contacted with the outside, when the temperature measurement needs to be carried out after the drill bit 2 reaches a designated depth, the electric push rod 15 on the fixed pipe 14 is driven to work, the supporting rod 13 is pushed to slide along the direction of the convex rail 12, the supporting rod 13 moves towards the drill bit 2 along the axial direction of the main rod 11 to be unfolded, the through groove on the side surface of the supporting rod 13 is exposed, and the temperature measuring component 3 can measure the ground temperature of the current depth.
As shown in fig. 5 and 6, the temperature measuring assembly 3 includes: the frame body 31, the frame body 31 is fixedly mounted in the support rod 13 in a welding manner, the left side and the right side of the frame body 31 are opened, the front side and the rear side of the frame body 31 are symmetrically provided with sliding grooves in the horizontal direction, and the sliding grooves are in a flat oval shape; the sliding block 32, the sliding block 32 can slide horizontally along the sliding groove relative to the frame 31, and the sliding block 32 consists of two cylinders with different diameters; the temperature detector 33 is arranged in the frame 31, the temperature detector 33 is slidably pulled out, the whole temperature detector 33 is in a frame shape with an opening facing the side face, a through groove for the temperature detector 33 to pass through is formed in the supporting rod 13, and the temperature detector 33 is fixedly connected with the sliding block 32 in a manner of strong glue bonding; the probe 34 is arranged on the temperature detector 33 in a threaded connection mode, the probe 34 extends out of the side face of the supporting rod 13 along with the temperature detector 33, and the length direction of the probe 34 is parallel to the sliding groove; two temperature detectors 33 are symmetrically arranged in the frame body 31, elastic pieces 35 are connected between the temperature detectors 33, the elastic pieces 35 are elastic ropes made of rubber materials, the temperature detectors 33 are close to each other under the action of the elastic pieces 35, and two groups of probes 34 which are parallel to each other are arranged on the side surfaces of the temperature detectors 33.
As shown in fig. 7, there is also included an extension mechanism 4 for controlling extension of the temperature probe 33 and the probe 34, the extension mechanism 4 including: a bracket 41, wherein the bracket 41 capable of sliding along the axial direction of the fixed pipe 14 is installed in the fixed pipe 14, and the bracket 41 is composed of a circular ring part and two vertical rod parts extending towards the side of the support rod 13 along the axial direction of the fixed pipe 14; the connecting rods 42 are hinged between the bottom ends of the brackets 41 and the sliding blocks 32, the connecting rods 42 on two sides are in an inverted-splayed shape, the included angles of the connecting rods 42 are increased or decreased along with rotation, and when the brackets 41 fall down, the connecting rods 42 rotate to push the sliding blocks 32 to horizontally move; the stopper 43, fixed pipe 14 inside downside welding has annular stopper 43, and stopper 43 size and the ring portion looks adaptation of support 41, stopper 43 can restrict support 41 and slide out from fixed pipe 14 below.
As shown in fig. 8, there is further included a scraping mechanism 5 for scraping off mud adhered to the surface of the probe 34, the scraping mechanism 5 including: the scraper 51 is welded on the side surface of the frame 31, the area of the cross section of the scraper 51 is smaller than that of the temperature detector 33, a guide hole 52 matched with the probe 34 is formed in the scraper 51, and the probe 34 passes through the guide hole 52 when moving along with the temperature detector 33.
When the electric push rod 15 pushes the support rod 13 to slide and spread, the frame 31 in the support rod 13 synchronously moves downwards, the support 41 is driven to axially move along the fixed pipe 14 by the connection action of the connecting rod 42 until the support 41 moves to the joint of the bottom surface and the surface of the limiting block 43, the support 41 is blocked by the limiting block 43 and cannot slide downwards to the lower side of the fixed pipe 14, the support rod 13 and the frame 31 continue to move downwards under the driving of the electric push rod 15, the connecting rod 42 with the end connected with the support 41 is stressed to rotate, the included angle between the connecting rod 42 and the support 41 is increased, the sliding blocks 32 on the side sliding grooves of the frame 31 are mutually separated to drive the temperature detectors 33 in the frame 31 to extend along the length direction, the elastic pieces 35 between the temperature detectors 33 are stressed to extend, the probe 34 moves along the temperature detectors 33 to extend through the guide holes 52 on the scraping plate 51 to measure the temperature at the joint, because two temperature detectors 33 are symmetrically arranged left and right, and two groups of probes 34 are respectively arranged on the two temperature detectors 33, four groups of data are measured at the same depth during temperature measurement, so that the accuracy of measurement can be improved by comparing and screening abnormal data, averaging and the like, after the measurement is completed, the electric push rod 15 is driven to pull the support rod 13 back, the distance between the frame 31 and the support 41 is shortened, the temperature detectors 33 and the slide block 32 are mutually close under the reset action of the elastic piece 35, the included angle between the reverse rotation of the connecting rod 42 and the support 41 is reduced, the probes 34 penetrate and retract from the guide holes 52 on the scraping plate 51, mud adhered to the surface of the probes 34 is scraped off, the temperature detectors 33 are completely retracted into the frame 31, and the inner side of the main rod 11 is isolated from the external environment along with the further movement of the support rod 13.
Example 2: on the basis of the embodiment 1, as shown in fig. 9, an isolation mechanism 6 for further improving the accuracy of the geothermal measurement is further included, and the isolation mechanism 6 includes: a circular cylindrical chamber 61 formed by the joint enclosure of the convex rail 12, the support rod 13 and the main rod 11, wherein the circular cylindrical chamber 61 contains a sufficient amount of fluid; the cylinder body 62 is sleeved with an annular cylinder body 62 outside the bottom end of the main rod 11, and the cylinder body 62 is communicated with the circular cylindrical cavity 61; a first air bag 63, which is fixedly installed on the outer side of the main rod 11 by means of strong glue adhesion, is arranged above the cylinder 62; the second air bag 64 is arranged below the cylinder 62 and fixedly arranged on the outer side of the supporting rod 13 in a way of strong glue bonding, and the first air bag 63 and the second air bag 64 are made of elastic rubber; the connecting pipe 65, be linked together through connecting pipe 65 between first gasbag 63 and the second gasbag 64, connecting pipe 65 length direction is parallel with mobile jib 11 axial, connecting pipe 65 is put through with cylinder body 62, connecting pipe 65 adopts flexible bellows, and connecting pipe 65 expansion stretches when branch 13 slides and stretches out relative mobile jib 11.
When the temperature detector 33 moves along with the strut 13 to be unfolded and stretched, the space of a circular cylindrical chamber 61 formed by the strut 13, the convex rail 12 and the main rod 11 in a surrounding way is reduced, fluid contained in the circular cylindrical chamber is extruded to flow into the cylinder 62, flows into the first air bag 63 and the second air bag 64 on the upper side and the lower side of the cylinder 62 along the unfolded and stretched connecting pipe 65, so that the first air bag 63 and the second air bag 64 are inflated, the temperature detector 33 is separated from the upper side area of the first air bag 63 and the lower side area of the second air bag 64, the phenomenon that cuttings and the like enter a measuring area to interfere with temperature measurement is avoided, after the measurement is completed, the space of the circular cylindrical chamber 61 is increased along with the rising of the strut 13, the fluid in the first air bag 63 and the second air bag 64 flows back into the circular cylindrical chamber 61 along the connecting pipe 65 and the cylinder 62, the first air bag 63 and the second air bag 64 are contracted, and the connecting pipe 65 is shortened and reset to the initial length.
As shown in fig. 10 and 11, the device further comprises a shutoff mechanism 7 for shutting off the liquid channel inside the drill rod 1, wherein the shutoff mechanism 7 comprises: the first cover plate 71, a disc-shaped first cover plate 71 is welded in the fixed pipe 14, and the diameter of the first cover plate 71 is adapted to the inner diameter of the fixed pipe 14; the support rods 72 are fixedly connected with two symmetrically arranged support rods 72 at the top end of the support 41, and the support rods 72 penetrate through the first cover plate 71 to extend upwards; a second cover plate 73, wherein a disc-shaped second cover plate 73 is welded at the top end of the supporting rod 72; six water passing holes 74 with central symmetry are formed in the first cover plate 71 and the second cover plate 73, the water passing holes 74 are flat elliptic strip-shaped holes, the positions of the water passing holes 74 in the first cover plate 71 and the second cover plate 73 are staggered, and when the first cover plate 71 is attached to the second cover plate 73, the water passing holes 74 are blocked.
When the support 41 moves along with the support rod 13 and falls down, the support rod 13 drives the second cover plate 73 to synchronously descend until the second cover plate 73 is attached to the first cover plate 71, water passing holes 74 on the first cover plate 71 and the second cover plate 73 are blocked due to the fact that the positions of the water passing holes are staggered, a liquid channel inside the drill rod 1 is cut off, cooling liquid on an external water source is not flowed to the drill bit 2, further, the influence of heat exchange caused in the liquid flowing process on the ground temperature measurement is avoided, and the accuracy of temperature measurement is improved.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
The above is only an alternative embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A geothermal survey and geothermal measurement apparatus comprising:
the drill rods (1) are sequentially connected in a threaded connection mode;
the drill comprises a drill bit (2), wherein the bottom end of a drill rod (1) is connected with the drill bit (2), a liquid channel for cooling the drill bit (2) is arranged in the drill rod (1), and the liquid channel is connected with an external water source;
the temperature measuring assembly (3) is arranged in the drill rod (1) and is used for measuring the temperature of the ground;
characterized in that the drill rod (1) comprises:
a main lever (11);
the convex rail (12) is symmetrically arranged on the inner wall of the main rod (11), and the convex rail (12) extends along the axial direction;
the support rod (13) is in sliding connection with the convex rail (12), the support rod (13) can move axially relative to the main rod (11), and the bottom end of the support rod (13) is connected with the drill bit (2);
the temperature measuring assembly (3) is arranged on the supporting rod (13), the supporting rod (13) can be kept in a retracted state in the drilling process, and the temperature measuring assembly (3) is not contacted with the outside;
the drill rod (1) further comprises:
the fixed pipe (14) is arranged in the main rod (11), and the fixed pipe (14) is positioned on the upper side of the branch rod (13);
the electric push rod (15) is arranged on the fixed pipe (14), and the movable part of the electric push rod (15) is fixedly connected with the supporting rod (13);
the temperature measuring assembly (3) comprises:
the frame body (31) is fixedly arranged in the supporting rod (13), and sliding grooves in the horizontal direction are symmetrically formed in the side face of the frame body (31);
a slider (32), wherein the slider (32) can slide horizontally along the chute relative to the frame (31);
the temperature detector (33) is arranged in the frame body (31), the temperature detector (33) is pulled out in a sliding mode, a through groove for the temperature detector (33) to pass through is formed in the supporting rod (13), and the temperature detector (33) is fixedly connected with the sliding block (32);
the probe (34) is arranged on the temperature detector (33), and the probe (34) extends out of the side face of the supporting rod (13) along with the temperature detector (33);
two temperature detectors (33) are symmetrically arranged in the frame body (31), elastic pieces (35) are connected between the temperature detectors (33), the temperature detectors (33) are mutually close under the action of the elastic pieces (35), and two groups of probes (34) are arranged on the side surfaces of the temperature detectors (33);
the device also comprises an extending mechanism (4) for controlling the extending of the temperature detector (33) and the probe (34), wherein the extending mechanism (4) comprises:
a bracket (41) in which the fixed tube (14) is mounted with the bracket (41) that can slide along the fixed tube (14) in the axial direction;
the connecting rod (42) is hinged between the bottom end of the bracket (41) and the sliding block (32), and when the bracket (41) falls down, the connecting rod (42) rotates to push the sliding block (32) to move horizontally;
the limiting block (43) is arranged at the lower side of the inner part of the fixed pipe (14), and the limiting block (43) can limit the bracket (41) to slide out from the lower side of the fixed pipe (14);
also comprises an isolation mechanism (6) for further improving the accuracy of the ground temperature measurement, wherein the isolation mechanism (6) comprises:
a circular cylindrical cavity (61) formed by the joint enclosure of the convex rail (12), the support rod (13) and the main rod (11);
the cylinder body (62) is sleeved outside the bottom end of the main rod (11), and the cylinder body (62) is communicated with the circular cylindrical cavity (61);
the first air bag (63) is arranged above the cylinder body (62), and the first air bag (63) is fixedly arranged on the outer side of the main rod (11);
the second air bag (64) is arranged below the cylinder body (62), and the second air bag (64) is fixedly arranged on the outer side of the supporting rod (13);
the first air bag (63) and the second air bag (64) are communicated through the connecting pipe (65), and the connecting pipe (65) is communicated with the cylinder body (62);
the connecting pipe (65) adopts a telescopic corrugated pipe, and when the supporting rod (13) slides and stretches out relative to the main rod (11), the connecting pipe (65) is unfolded and stretched.
2. A geothermal survey and geothermal measurement apparatus according to claim 1, further comprising scraping means (5) for scraping off mud adhering to the surface of the probe (34), the scraping means (5) comprising:
the scraper blade (51), scraper blade (51) are installed to framework (31) side, offer on scraper blade (51) with guide hole (52) of probe (34) looks adaptation.
3. A geothermal survey and geothermal measurement apparatus according to claim 1, further comprising a shut-off means (7) for shutting off the passage of liquid inside the drill pipe (1), the shut-off means (7) comprising:
a first cover plate (71), wherein a disk-shaped first cover plate (71) is fixedly arranged in the fixed pipe (14);
the support rod (72) is fixedly connected with the top end of the support (41);
and the top end of the supporting rod (72) is provided with a disc-shaped second cover plate (73).
4. A geothermal survey and geothermal measurement apparatus according to claim 3, wherein:
a plurality of water passing holes (74) which are symmetrical in center are formed in the first cover plate (71) and the second cover plate (73), the positions of the water passing holes (74) in the first cover plate (71) and the second cover plate (73) are staggered, and when the first cover plate (71) is attached to the second cover plate (73), the water passing holes (74) are blocked.
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| CN202311087814.9A CN117027771B (en) | 2023-08-28 | 2023-08-28 | Geothermal investigation and geothermal temperature measuring device |
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| CN202311087814.9A CN117027771B (en) | 2023-08-28 | 2023-08-28 | Geothermal investigation and geothermal temperature measuring device |
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