Drilling tool with temperature measuring system

By designing a spiral groove on the hollow drill pipe to arrange the temperature measurement structure cable and using a conductive slip ring to lead it out, the problem of cable wiring and storage space negotiation in a low-temperature vacuum environment is solved, and stable temperature monitoring and data transmission of the drilling tool in extreme environments are achieved.

CN117432351BActive Publication Date: 2025-09-09GUANGDONG UNIV OF TECH
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Patent Information

Application Number
CN202311454611.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-11-02
Publication Date
2025-09-09
Estimated Expiration
2043-11-02

AI Technical Summary

Technical Problem

In a low-temperature vacuum environment, the cable wiring space of traditional temperature sensors interferes with the sample storage space, affecting the drilling sampling effect. In addition, the data transmission is unstable, making it difficult to accurately monitor the temperature.

Method used

A hollow drill pipe is designed, and the temperature measurement structure cable is arranged in a spiral groove. It is led out through a conductive slip ring to ensure that the cable is stably buried and avoids interference with the coring section. It is fixed with low-temperature resistant glue and protected with wear-resistant sealant. The conductive slip ring and monitoring mechanism are combined to achieve stable data transmission.

Benefits of technology

Achieve efficient cutting and sampling in extreme environments, stably sense temperature, ensure accurate data transmission, and guarantee safe and stable operation of drilling tools.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a drilling tool with a temperature measurement system. The system includes a hollow drill rod, wherein the circumferential outer wall of the hollow drill rod is provided with a spiral blade, one end of the hollow drill rod is connected to a drill bit, and the other end is connected to a conductive slip ring. The hollow drill rod and the drill bit are provided with a temperature measurement structure, and the circumferential outer wall of the hollow drill rod is also provided with a spiral groove. The cable of the temperature measurement structure is arranged along the spiral groove and is led out through the conductive slip ring. After being led out, it is electrically connected to a monitoring mechanism. The present invention ensures stable burial and accurate wiring of the cable through the redesign of the overall structure. In particular, one or more buried spiral grooves are cut into the hollow drill rod, ensuring that the cable of the temperature measurement structure can be integrated with the drilling tool and can be stably buried in the hollow drill rod when the drill bit and hollow drill rod are in operation.
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Description

Technical Field

[0001] The present invention relates to the technical field of space resource detection, and more particularly to a drilling tool with a temperature measurement system. Background Art

[0002] With the continuous advancement of scientific research and resource development, the demand for drilling and sampling work in special environments is gradually increasing. Among them, low temperature and vacuum environments are common in some special environments, such as in planetary exploration such as the moon and Mars, as well as in extreme environments such as the deep sea and glaciers on Earth. The acquisition and analysis of interstellar soil and rock samples place even more stringent requirements on tools.

[0003] Temperature monitoring is a crucial component of drilling sampling device design in these challenging environments, as material properties and performance often change under varying temperature and pressure conditions. However, conventional temperature monitoring methods and devices can face a number of challenges in cryogenic and vacuum environments. Traditional temperature sensors can lose accuracy due to environmental influences, while the transmission capacity of cables can be limited by low temperatures and vacuum conditions, hampering data collection and transmission.

[0004] Several temperature monitoring methods and devices already exist, but their application in cryogenic vacuum environments remains challenging. Typically, temperature sensor cables are installed internally within the device, routing them along the device's internal space. However, if the drilling sampling device requires internal sample storage, this can interfere with cabling space or compress the sample storage space, compromising the effectiveness of the drilling sampling process.

[0005] Therefore, designing sufficient sample storage space is essential for drilling sampling equipment. Furthermore, for sampling equipment operating in extreme environments, accurate knowledge of the device's operating temperature is essential to prevent structural damage or even drill burns, leading to sampling failure. Excessively high or low temperatures can also have unpredictable effects on the sample, directly impacting sampling quality. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defect that the sample storage space of the existing temperature monitoring device will interfere with the wiring space, and to provide a drilling tool with a temperature measurement system. By designing a reasonable spatial structure, optimizing the sensor layout, and stable data transmission, the safe and stable operation of the drilling sampling device is ensured.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] The present invention provides a drilling tool with a temperature measurement system, comprising a hollow drill pipe, wherein a spiral blade is provided on the circumferential outer wall of the hollow drill pipe, one end of the hollow drill pipe is connected to a drill bit, and the other end is connected to a conductive slip ring, and a temperature measurement structure is provided on the hollow drill pipe and the drill bit, and the circumferential outer wall of the hollow drill pipe is further provided with a spiral groove, wherein the spiral groove is arranged along the gap between the spiral blades, and the cable of the temperature measurement structure is arranged along the spiral groove and is led out through the conductive slip ring, and then electrically connected to a monitoring mechanism. By redesigning the overall structure, the present invention ensures space for sampling through the hollow drill pipe on the one hand, and ensures stable burial and accurate wiring of the cable on the other hand. The main design point is that one or more buried spiral grooves are cut into the hollow drill pipe, ensuring that the cable of the temperature measurement structure can be integrated with the drill tool and can be stably buried in the hollow drill pipe when the drill bit and hollow drill pipe are in operation. The spiral groove is arranged parallel to the spiral blade and is arranged between two adjacent spiral blades.

[0009] Furthermore, the hollow drill pipe includes a hollow section and a coring section, with the coring section located near the drill bit. Unlike existing techniques, the present invention incorporates a coring section within the hollow drill pipe, located near the drill bit. This section and the drill bit can store materials such as regolith and rock during drilling. This is why the spiral grooves are designed into the outer wall of the hollow drill pipe to prevent interference with the space in the coring section.

[0010] Furthermore, the spiral groove is provided on the circumferential outer wall of the coring section, one end of the spiral groove is connected to a blind hole, which is provided at the connection point between the coring section and the drill bit. The other end of the spiral groove is provided with a cable routing hole, which is connected to the interior of the hollow section. The blind hole is provided at the connection point between the coring section and the drill bit, and is used to bury the temperature measuring structure provided on the drill bit, and allows the cable of the temperature measuring structure to be arranged along the spiral groove. As for the other end, the cable is routed along the spiral groove to the cable routing hole, then passes through the side wall of the hollow drill pipe through the cable routing hole, enters the hollow section, and is arranged in the hollow section toward the conductive slip ring, and finally connects to the conductive slip ring.

[0011] Furthermore, the cable routing hole is covered with a rubber plug, which is provided with a notch for the cable to pass through. A rib is provided at the inner end of the cable routing hole for installing the rubber plug. After the rubber plug is installed in place, the rib is used to limit the position and is fixed with glue. The rib is designed with chamfers and notches. The function of the chamfer is to protect the cable from being cut when it comes into contact. The rubber plug is also provided with a notch for the cable to pass through. The two notches can reduce the bending angle of the cable so that it does not bend at right angles, thereby better protecting the cable.

[0012] Furthermore, mounting holes are provided on the circumferential outer wall of the hollow section, for mounting the temperature measuring structure. Preferably, the mounting holes are provided in the hollow section of the hollow drill rod, distributed at intervals of 50 mm from one end near the coring section to the other end, and the mounting holes are connected to the interior of the hollow section.

[0013] Furthermore, as another preferred embodiment, a mounting groove is further provided on the circumferential outer wall of the hollow section, one end of the mounting groove is connected to the mounting hole, and the mounting groove is arranged along the direction of the spiral blade. The end of the temperature measuring structure is led out from the mounting hole and installed in the mounting groove, and the temperature measuring structure leads its cable through the mounting hole so that the cable is connected to the conductive slip ring. After the temperature measuring structure is installed, the mounting groove and the mounting hole are sealed with low-temperature resistant glue. The mounting groove is provided to increase the contact area between the temperature measuring structure and the encapsulating glue, so that the temperature measuring structure is installed more firmly and will not be separated from its installation position when the drill bit rotates at high speed.

[0014] Furthermore, the drill bit is connected to the hollow drill rod via a threaded connection, wherein the tightening direction of the thread is opposite to the rotational direction of the drill tool, commonly known as reverse threading, which effectively prevents loosening and ensures reliable and stable transmission. The free end of the drill bit is also provided with cutting edges, preferably 4-6 cutting edges, equidistantly spaced along the circumference.

[0015] Furthermore, the conductive slip ring includes a slip ring mounting part, a cable protective shell, a slip ring body and a drilling rig mounting part, which are sequentially connected to the hollow drill rod. The cable of the temperature measuring structure is led out from the end of the hollow drill rod. Since the hollow drill rod is in a continuous rotation state during operation, the cable needs to be led out through a conductive slip ring. After being led out from the hollow drill rod, the cable is connected to the inner ring of the slip ring body, and the inner and outer rings of the slip ring body are electrically connected. The cable led out from the outer ring of the slip ring body follows the routing of the system to connect the monitoring mechanism. Among them, the cable protective shell is provided on the hollow drill rod to protect the cable led out from the hollow drill rod. The drilling rig mounting part is used to connect the output shaft of the drilling rig to provide a power source for the present invention.

[0016] Furthermore, the circumferential sidewalls of the slip ring mounting member are provided with several cable holes for routing cables. To ensure smoother and more gradual cable routing without any right-angle bends during routing, and to protect the cables from breakage, the cable holes are oblong, allowing the cables inside the hollow drill rod to be routed out in batches.

[0017] Furthermore, the monitoring mechanism includes a temperature patrol meter electrically connected to the temperature measurement structure, and an industrial computer electrically connected to the temperature patrol meter.

[0018] The beneficial effects of the present invention are:

[0019] 1. A hollow drill pipe design is used to achieve drilling and sampling functions. The temperature measurement component cable is designed to be placed on the outer wall of the drill pipe, ensuring stable burial and accurate wiring of the cable. This enables the present invention to not only achieve efficient cutting and slag removal functions in extreme environments, but also stably sense temperature during the drilling process, providing a reliable physical carrier for drill tool temperature monitoring.

[0020] 2. This invention addresses the need for drill tool temperature monitoring in special environments such as cryogenic vacuum environments and designs an efficient system solution to ensure stable and accurate temperature data collection even under extreme conditions. Finite element analysis is performed during the design phase to verify the torsional strength of the drill tool. The system is also verified and optimized in actual application scenarios. This engineering verification ensures the system's reliability and durability in actual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 An exploded view of the present invention;

[0024] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0025] Figure 5 This is a schematic diagram of the installation of the rubber plug.

[0026] In the attached figure:

[0027] 1-Hollow drill rod; 2-Drill bit; 201-Cutting edge; 3-Conductive slip ring; 301-Slip ring mounting; 302-Cable protective shell; 303-Slip ring body; 304-Drilling rig mounting; 4-Spiral groove; 5-Spiral blade; 6-Hollow section; 7-Coring section; 8-Blind hole; 9-Cable routing hole; 901-Ring; 10-Rubber plug; 11-Mounting hole; 12-Mounting slot; 13-Cable hole; 14-Temperature inspection meter; 15-Industrial computer. DETAILED DESCRIPTION

[0028] The present invention is further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are not to be construed as limiting this patent. Certain components in the accompanying drawings may be omitted, enlarged, or reduced in size to better illustrate the embodiments, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that certain well-known structures and their descriptions may be omitted from the accompanying drawings.

[0029] The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "front", "rear", "left", "right", etc. indicating an orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances. In addition, in the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" or "second" can explicitly or implicitly include at least one such feature.

[0030] Example 1:

[0031] See Figures 1 to 4 This embodiment provides a drill tool with a temperature measurement system, primarily used to monitor drill tool temperature in extreme environments and enable sampling operations. This drill tool with a temperature measurement system can provide critical data support for future lunar exploration missions and deep space exploration. By accurately measuring and monitoring drill tool temperature, this system is expected to bring breakthroughs to lunar polar research, resource exploration, and environmental adaptability research.

[0032] The drilling tool with a temperature measurement system comprises a hollow drill pipe 1, with spiral blades 5 formed on its circumferential outer wall. One end of the drill pipe 1 is connected to a drill bit 2, and the other end is connected to a conductive slip ring 3. Both the drill pipe 1 and the drill bit 2 are equipped with temperature measurement structures. Spiral grooves 4 are also formed on the circumferential outer wall of the drill pipe 1. The cable of the temperature measurement structure is routed along the spiral grooves 4 and leads through the conductive slip ring 3, where it is electrically connected to a monitoring mechanism. The drill bit 2 and the hollow drill pipe 1 are connected via a reverse thread, effectively preventing loosening and ensuring reliable and stable transmission. The free end of the drill bit 2 is also equipped with five cutting edges 201, spaced evenly along the circumference. Slip ring technology, which allows for flexible cable movement, is also incorporated. The conductive slip ring 3 is positioned between the drilling rig and the drill tool, allowing the cable to be routed through the conductive slip ring 3. The captured temperature signal is then transmitted to the monitoring mechanism for storage and processing. This ensures accurate data transmission without interference from drilling tool operation.

[0033] The redesign of the hollow drill rod 1 structure ensures stable burial and accurate routing of the cables. A key design feature is the incorporation of a spiral groove 4 into the hollow drill rod 1, ensuring that the temperature measurement structure's cables can be integrated with the drill tool and stably buried within the hollow drill rod 1 during operation of the drill bit 2 and hollow drill rod 1. The spiral groove 4 is arranged parallel to the spiral blades 5 and between two adjacent spiral blades 5. In other embodiments, multiple spiral grooves 4 may be provided along the gaps between the spiral blades 5, allowing for the routing of a greater number of temperature measurement structures and their cables.

[0034] The hollow drill rod 1 includes a hollow section 6 and a coring section 7, and the hollow section 6 and the coring section 7 are separated by a blocking structure (not shown in the figure). The coring section 7 is arranged on the side close to the drill bit 2 and is connected to the drill bit 2. During the drilling process of the hollow drill rod 1 and the drill bit 2, the drilled soil / star soil samples can be retained in the coring section 7. In other words, the hollow drill rod 1 including the hollow section 6 and the coring section 7 and the base of the drill bit 2 are hollow, but because the coring section 7 and the drill bit 2 need to store soil / star soil samples during the drilling process, the spiral groove 4 is arranged on the outer wall of the hollow drill rod 1 to avoid interference with the space of the coring section 7. The cable can only be routed inside the hollow section 6 after it passes the position of the coring section 7.

[0035] The length ratio of the hollow section 6 to the coring section 7 is not limited and can be adjusted according to actual needs. In other embodiments, the coring section 7 can be set as long as possible so that more soil / star soil samples can be collected and stored.

[0036] Example 2:

[0037] See Figures 1 to 4 On the basis of Example 1, the spiral groove 4 is arranged on the circumferential outer wall of the coring section 7, one end of the spiral groove 4 is connected to a blind hole 8, and the blind hole 8 is arranged at the connection position between the coring section 7 and the drill bit 2, and the other end of the spiral groove 4 is provided with a cable routing hole 9, and the cable routing hole 9 is arranged in the hollow section 6 and passes through the side wall of the hollow drill rod 1.

[0038] Among them, the blind hole 8 is arranged at the connection position between the coring section 7 and the drill bit 2. The blind hole 8 is used to bury the temperature measuring structure arranged on the drill bit 2, and the cable of the temperature measuring structure can be arranged along the spiral groove 4. The diameter of the blind hole 8 is about 3 mm. After the blind hole 8 is cut, the head of one of the temperature measuring structures is placed in the blind hole 8 and encapsulated with glue. Specifically, the temperature measuring structure is a thermocouple wire. As for the other end, the cable is wired along the spiral groove 4 to the cable routing hole 9, and then passes through the side wall of the hollow drill rod 1 through the cable routing hole 9, enters the hollow section 6, and is arranged in the hollow section 6 toward the conductive slip ring 3, and finally connected to the conductive slip ring 3. During the wiring process, the other four temperature measuring structures, that is, the thermocouple wires, are evenly arranged in the spiral groove 4. After setting, they are also encapsulated with low-temperature resistant glue.

[0039] See Figure 5 To protect the cables, in this embodiment, a rib 901 is provided at the inner end of the cable routing hole 9 for mounting a rubber plug 10. After the rubber plug 10 is installed, the rib 901 is used to limit its position and is secured with glue. The rib 901 is designed with chamfers and notches. The chamfers protect the cables from being cut during contact. The rubber plug 10 also has notches for the cables to pass through. These two notches can reduce the bending angle of the cables, preventing them from bending at right angles, thereby better protecting the cables.

[0040] Example 3:

[0041] See Figure 1 as well as Figure 2 Based on the second embodiment, the hollow section 6 in this embodiment is further provided with a mounting hole 11 on the circumferential outer wall. The mounting hole 11 is connected to a mounting slot 12 for mounting the temperature measuring structure. The temperature measuring structure provided in the hollow section 6 comprises five additional galvanic wires, which, together with the four galvanic wires provided in the coring section 7 and the one galvanic wire provided in the drill bit 2, total ten galvanic wires. The mounting holes 11 are provided in the hollow section 6 of the hollow drill rod 1, spaced 50 mm apart from one end near the coring section 7 to the other. A total of five mounting holes 11 are provided, each corresponding to a galvanic wire. The mounting holes 11 communicate with the cavity of the hollow section 6, and a mounting slot 12 is provided at the edge of the mounting hole 11, extending in the direction of the spiral blade 5. Of course, the length of the mounting slot 12 can be set relatively short, as long as it can accommodate the head of the galvanic wire. The end of the temperature measuring structure, that is, the head of the galvanic wire, is installed in the mounting slot 12, and its cable is led out through the mounting hole 11 to connect to the conductive slip ring 3. After the galvanic wire is installed, the installation groove 12 is sealed with low-temperature resistant glue.

[0042] like Figure 3As shown, the conductive slip ring 3 is a prior art, comprising a slip ring mounting part 301, a cable protective shell 302, a slip ring body 303 and a drill rig mounting part 304, which are sequentially connected to the hollow drill rod 1. The cable of the electric couple wire is led out from the end of the hollow drill rod 1. Since the hollow drill rod 1 is in a continuous rotation state during operation, the cable needs to be led out through the conductive slip ring 3. Specifically, after the cable is led out from the hollow drill rod 1, it is connected to the inner ring of the slip ring body 303. The inner and outer rings of the slip ring body 303 are electrically connected. The cable led out from the outer ring of the slip ring body 303 follows the routing connection monitoring mechanism of the system. Among them, the cable protective shell 302 is provided on the hollow drill rod 1 to protect the cable led out from the hollow drill rod 1. The drill rig mounting part 304 is used to connect the output shaft of the drill rig to provide a power source for the system.

[0043] Among them, the slip ring mounting part 301 is used to connect the hollow drill rod 1 and the slip ring body 303. Four cable holes 13 are provided on the circumferential side wall of the slip ring mounting part 301 for leading out the cables. The cable holes 13 are evenly distributed at equal distances along the circumference of the slip ring mounting part 301. In order to ensure that right-angle bends are avoided during wiring, to make the cables smoother and gentler, and to protect the cables from the risk of breaking, the cable holes 13 are oblong holes, the length direction of which is the same as the length direction of the hollow drill rod 1, and the cables inside the hollow drill rod 1 can be led out in batches. If it is an ordinary through hole, the cable needs to go through two bends close to right angles when passing through the through hole, and it is easy to be broken when the system rotates at high speed. The cable hole 13 in the shape of an oblong hole can increase the bending angle of the cable, making the cable smoother and gentler.

[0044] Among them, the use of the low-temperature resistant glue to bond the cable can prevent the drill cuttings during the movement of the drill from damaging the sensor or cable. The glue is a liquid nitrogen-specific low-temperature sealant, Yuefu YF-9188, which is resistant to -200 degrees ultra-low temperature sealant. It can adapt to extreme environments and maintain stable physical and chemical properties even at extreme temperatures. In addition, in addition to fixing the cable, the sealant also protects the sensitive head of the sensor (that is, the temperature measuring structure). The selected sealant has good wear resistance, and the sealant covers the entire spiral groove 4, completely submerging the sensitive head of the sensor. In this way, no substantial friction will occur between the sensitive head of the sensor and the soil / star soil during the drilling process, thereby ensuring that the head of the sensor will not be damaged during the drilling process.

[0045] Example 4:

[0046] like Figure 1As shown, based on any of the above embodiments, the monitoring mechanism includes a temperature patrol meter 14 electrically connected to the temperature measurement structure, and an industrial computer 15 electrically connected to the temperature patrol meter 14. The captured temperature signal is reliably transmitted via a cable to the dedicated temperature patrol meter 14 for storage and processing. This ensures accurate data transmission without interference from drilling tool operation. Furthermore, the inventors have designed highly professional host computer software that runs on the industrial computer 15. This software monitors and displays temperature data collected from the sensor in real time, while also intuitively plotting temperature changes over time. This provides operators with real-time, clear temperature information, helping to promptly identify and resolve any temperature issues that may affect drilling operations, ensuring work safety and efficiency.

[0047] The temperature measuring mechanism is an existing K-type thermocouple temperature sensor, and the temperature signal it captures is transmitted to the temperature patrol meter 14 through a cable. The model used by the temperature patrol meter 14 is a 16-loop patrol intelligent display instrument, which is a digital temperature alarm thermostat relay transmitter that supports RS485 signal output. The temperature patrol meter 14 can simultaneously receive signals from 16 K-type thermocouples and convert them into specific temperature numerical displays with a display accuracy of up to 0.1°C.

[0048] Connect the RS485 signal output port of the temperature patrol meter 14 to a USB-to-485 adapter, which is then connected to the USB port of the industrial computer 15 to receive the signal from the temperature patrol meter 14. The host computer software for the temperature monitoring system was developed using QT on the industrial computer 15. This software interprets the signal from the temperature patrol meter 14 via the Modbus protocol and obtains the temperature value measured by the thermocouple temperature sensor. This host computer software enables real-time acquisition, display, and storage of transient temperature rise data at multiple locations on the hollow drill rod 1 and drill bit 2, with the acquisition frequency being manually controllable.

[0049] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A drilling tool with a temperature measurement system, comprising a hollow drill rod (1), one end of the hollow drill rod (1) being connected to a drill bit (2), and the other end being connected to a conductive slip ring (3), a spiral blade (5) being provided on the circumferential outer wall of the hollow drill rod (1), characterized in that: A temperature measuring structure is provided on the hollow drill rod (1) and the drill bit (2). A spiral groove (4) is provided on the circumferential outer wall of the hollow drill rod (1) along the gap of the spiral blade (5). The temperature measuring structure and the cable of the temperature measuring structure are arranged along the spiral groove (4). The cable of the temperature measuring structure is led out through the conductive slip ring (3) and is electrically connected to the monitoring mechanism after being led out. The hollow drill rod (1) includes a hollow section (6) and a coring section (7). The coring section (7) is provided on a side close to the drill bit (2). The spiral groove (4) is provided on the circumferential outer wall of the coring section (7). A blind hole (8) for installing one of the temperature measuring structures is provided at the connection position between the coring section (7) and the drill bit (2). One end of the spiral groove (4) is connected to the blind hole (8), and the other end is connected to a cable routing hole (9). The cable routing hole (9) is communicated with the interior of the hollow section (6).

2. The drilling tool with a temperature measurement system according to claim 1, characterized in that: The cable routing hole (9) is covered with a rubber plug (10), and the rubber plug (10) is provided with a notch for the cable to pass through.

3. The drilling tool with a temperature measurement system according to claim 1, characterized in that: A mounting hole (11) for mounting the temperature measuring structure is provided on the circumferential outer side wall of the hollow section (6), and the mounting hole (11) is communicated with the interior of the hollow section (6).

4. The drilling tool with a temperature measurement system according to claim 3, characterized in that: A mounting groove (12) is also provided on the circumferential outer side wall of the hollow section (6), and one end of the mounting groove (12) is connected to the mounting hole (11).

5. The drilling tool with a temperature measurement system according to claim 1, characterized in that: The drill bit (2) is connected to the hollow drill rod (1) via a threaded connection, and a cutting edge (201) is further provided at the free end of the drill bit (2).

6. The drilling tool with a temperature measurement system according to claim 1, characterized in that: The conductive slip ring (3) comprises a slip ring mounting piece (301), a cable protection shell (302), a slip ring body (303), and a drilling rig mounting piece (304), which are sequentially connected to the hollow drill rod (1).

7. The drilling tool with a temperature measurement system according to claim 6, characterized in that: A plurality of cable holes (13) are provided on the circumferential side wall of the slip ring mounting member (301).

8. The drilling tool with a temperature measurement system according to claim 1, characterized in that: The monitoring mechanism includes a temperature patrol meter (14) electrically connected to the temperature measurement structure, and an industrial control computer (15) electrically connected to the temperature patrol meter (14).

Citation Information

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