CN211623404U - Temperature detection system for drilling bit of gas-containing coal layer - Google Patents
Temperature detection system for drilling bit of gas-containing coal layer Download PDFInfo
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- CN211623404U CN211623404U CN202020212136.XU CN202020212136U CN211623404U CN 211623404 U CN211623404 U CN 211623404U CN 202020212136 U CN202020212136 U CN 202020212136U CN 211623404 U CN211623404 U CN 211623404U
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
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- 238000011897 real-time detection Methods 0.000 abstract description 3
- 238000005065 mining Methods 0.000 description 6
- 238000009529 body temperature measurement Methods 0.000 description 4
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- 238000000605 extraction Methods 0.000 description 3
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Abstract
A temperature detection system for a drill bit for drilling a coal bed containing gas, the detection drill bit of the utility model is connected with a signal receiving device through a communication drill rod, and a temperature sensor is arranged in the detection drill bit and is used for detecting the temperature information of the detection drill bit in real time; the communication drill rod is used for transmitting real-time temperature information of the detection drill bit in the drilling process; signal receiving arrangement is used for receiving, storage and demonstration to creep into the temperature information of in-process detection drill bit, the utility model discloses can carry out real-time detection to the drill bit temperature, automatic shutting after detecting the drill bit temperature and surpassing the early warning threshold value, then carry out effective early warning to the staff in the pit through high temperature shutting early warning device and realize creeping into safely, avoid because the incident that the drill bit high temperature arouses.
Description
Technical Field
The utility model relates to a drill bit temperature detecting system specifically is a contain gas coal seam and creep into drill bit temperature detecting system, belongs to drill bit temperature monitoring technical field.
Background
The gas content of coal seams in China is generally high, more than 50% of mines in China are high gas mines, 44% of mines are high gas outburst mines, and the total number of the coal mines containing soft coal seams accounts for 53.3% of the total number of the coal mines in research, which indicates that the number of the coal mines containing soft coal seams in China is very large. For a long time, suffer fromThe permeability of the soft coal seam is low, the stability of the drill hole is poor, the gas control difficulty of the soft high-gas coal seam is high, the fatality rate of coal mine gas accidents is high, and therefore the soft high-gas coal seam mining area is a high-incidence area of major disasters of coal mines in China. Meanwhile, the coal mining depth in China is increased at a speed of 8-12 m/a. The method is expected to enter the mining depth of 1000-1500 m in China soft coal seam coal mines in the next two decades. A large number of shallow low gas mines are gradually changed into high gas mines, the gas content of the high gas mines at the current level is further increased, gas disasters can be displayed in a more obvious mode, and the gas accident occurrence and the fatality rate are in the situation of rising year by year. Therefore, gas must be extracted firstly when mining a coal seam (soft coal seam) with high gas and coal and gas outburst danger, and the mining operation can be arranged after the extraction effect meets the standard requirement; at present, the most common method for extracting gas in China is to pre-extract the gas in a coal seam of an extraction working face in advance by using a drill hole. The gas extraction drill hole forms comprise a ground vertical drill hole, a ground vertical-underground horizontal directional drill hole and an underground coal seam drill hole. However, the soft coal seam in China suffers from geological structure movement, so that the original fissures of the coal body are damaged, the coal body becomes soft, the structure is complex, and the air permeability is reduced (10)-4-10-3mD) greatly limits the application of the technology of pre-pumping the gas in the non-pressure-relief coal seam in the ground vertical drilling.
In the drilling process of the high-gas soft coal seam, the free gas of the coal body is continuously desorbed and released; the drill rod of the drill bit is rubbed with the coal body to generate high temperature; the transportation of static pressure wind makes the bottom of the hole in aerobic environment. Therefore, the three-edged drill rod wind-water linkage drilling always meets two factors of three factors of gas combustion, and if the water distribution amount is smaller, the temperature of the drill reaches the gas burning point, the fire accident in the hole is easily caused. Secondly, the coal dust in the holes is more, and in the process of carrying the coal dust by wind power, part of the coal dust is deposited to the lower part of the drilled hole under the action of gravity, so that more coal dust is reserved in the holes. The conventional hydraulic drilling machine mainly operates manually, and the temperature change condition of a drill bit in the drilling process cannot be observed under the existing conditions, so that the service life of the drill bit is short, the in-hole accidents such as carbon monoxide poisoning of a drill hole, gas burning of the drill hole and the like frequently occur, and the safety and high-efficiency mining of the coal mine are seriously threatened.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a coal seam containing gas creeps into drill bit temperature detecting system can detect the temperature variation of drill bit in real time, avoids because the incident that the drill bit high temperature arouses.
In order to realize the purpose, the utility model discloses a technical scheme is: a temperature detection system for a drill bit for drilling in a coal bed containing gas comprises a detection drill bit, wherein the detection drill bit is connected with a signal receiving device through a communication drill rod, and a temperature sensor is arranged in the detection drill bit and used for detecting temperature information of the detection drill bit in real time; the communication drill rod is used for transmitting real-time temperature information of the detection drill bit in the drilling process; the signal receiving device is used for receiving, storing and displaying the temperature information of the detected drill bit in the drilling process.
The detection drill bit is formed by connecting a drill bit and an intermediate joint, a male joint support I is arranged in a male joint of the intermediate joint, a temperature sensor is installed on the male joint, a female joint support II is arranged in a female joint of the intermediate joint, the female joint support II and the male joint support I are connected through a cable, the rear end of the intermediate joint is connected with a communication drill rod and is connected through a built-in cable of the communication drill rod, and a smooth communication line is formed; when the intermediate head is connected with the drill bit, the temperature sensor can stretch into the drill bit, can sense the temperature change of the drill bit and transmit the temperature change outwards through cables of the intermediate head and the communication drill rod.
The detection drill bit is optimized and improved on the basis of a diamond coreless drill bit, a temperature measurement connecting rod is additionally arranged in the detection drill bit, an inner connecting part is arranged on the detection drill bit, and a temperature sensor is arranged on one side, close to the detection drill bit, of the temperature measurement connecting rod, so that the temperature sensor is maximally close to the front end of the drill bit.
The communication drill rod is in a plug-in connection mode and comprises a male joint, a rod body, a female joint, a male head support III, a female head support IV and a cable, wherein the male head support III is fixed in a cavity of the male joint, and the female head support IV is fixed in a cavity of the female joint; one end of the male head support III is connected with one end of the female head support IV through a cable, and the other end of the male head support III and the other end of the female head support IV are provided with binding posts which are mutually inserted.
The communication drill rod is a triangular temperature measuring drill rod, a cable for data transmission is installed in the drill rod, the cable is in a three-strand plug-in type, a rod body of the triangular temperature measuring drill rod is in a triangular shape, drill rod connectors are welded on two sides of the rod body through high-temperature friction, and the drill rod connectors are in a hexagonal plug-in connection mode; the drill rod connector is made of Bao steel 42CrMoA material; the cable of placing in the hole is supported fixedly at drilling rod connector both ends utilization to open supporting ring, and the supporting ring processing has the ventilation hole.
The temperature sensor is a thermal resistance temperature sensor with the model number of PT 100.
Compared with the prior art, the detection drill bit of the utility model is connected with the signal receiving device through the communication drill rod, and the detection drill bit is internally provided with the temperature sensor for detecting the temperature information of the detection drill bit in real time; the communication drill rod is used for transmitting real-time temperature information of the detection drill bit in the drilling process; signal receiving arrangement is used for receiving, storage and demonstration to creep into the temperature information of in-process detection drill bit, the utility model discloses can carry out real-time detection to the drill bit temperature, automatic shutting after detecting the drill bit temperature and surpassing the early warning threshold value, then carry out effective early warning to the staff in the pit through high temperature shutting early warning device and realize creeping into safely, avoid because the incident that the drill bit high temperature arouses.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the probing drill of the present invention;
fig. 3 is a schematic structural diagram of the communication drill rod of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
fig. 6 is a cross-sectional view C-C of fig. 3.
In the figure: 1. survey drill bit, 1.1 drill bit, 1.2, intermediate head, 1.3, public first support I, 1.4, female first support II, 2, communication drilling rod, 2.1, public joint, 2.2, the body of rod, 2.3, female joint, 2.4, public first support III, 2.5, female first support IV, 3, signal receiver, 4, cable, 5, the coal seam, 6, temperature sensor.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-6, a system for detecting the temperature of a drill bit for drilling a gas-containing coal seam comprises a detection drill bit 1, wherein the detection drill bit 1 is connected with a signal receiving device 3 through a communication drill rod 2, and a temperature sensor 6 is arranged in the detection drill bit 1 and is used for detecting the temperature information of the detection drill bit 1 in real time; the communication drill rod 2 is used for transmitting real-time temperature information of the detection drill bit 1 in the drilling process; the signal receiving device 3 is used for receiving, storing and displaying the temperature information of the detection drill bit 1 in the drilling process.
The detection drill bit 1 is formed by connecting a drill bit 1.1 and an intermediate joint 1.2, a male head support I1.3 and a temperature sensor 6 are arranged in a male joint of the intermediate joint 1.2, a female head support II 1.4 is arranged in a female joint of the intermediate joint 1.2, the female head support II 1.4 and the male head support I1.3 are connected through a cable 4, the rear end of the intermediate joint 1.2 is connected with a communication drill rod 2 and is connected through a built-in cable 4 of the communication drill rod 2, and a smooth communication line is formed; when the intermediate joint 1.2 is connected with the drill bit 1.1, the temperature sensor 6 can extend into the drill bit 1.1, can sense the temperature change of the drill bit 1.1 and transmits the temperature change to the outside through the intermediate joint 1.2 and the cable 4 of the communication drill rod 2.
The communication drill rod 2 is in a plug-in connection mode and comprises a male connector 2.1, a rod body 2.2, a female connector 2.3, a male head support III 2.4, a female head support IV 2.5 and a cable 4, wherein the male head support III 2.4 is fixed in a cavity of the male connector 2.1, and the female head support IV 2.5 is fixed in a cavity of the female connector 2.3; one end of the male head support III 2.4 is connected with one end of the female head support IV 2.5 through a cable 4, and the other end of the male head support III 2.4 and the other end of the female head support IV 2.5 are provided with binding posts which are mutually spliced; along with the extension of drilling depth, when the installation communication drilling rod, two drilling rods are connected through the terminal of pegging graft each other to it is smooth and easy to guarantee to communicate between the communication drilling rod.
The communication drill rod 2 is a triangular temperature measuring drill rod, a cable 4 which can be used for data transmission is installed in the drill rod, the cable 4 is in a three-strand plug-in type, a rod body of the triangular temperature measuring drill rod is in a triangular shape, drill rod connectors are welded on two sides of the rod body through high-temperature friction, and the drill rod connectors are in a hexagonal plug-in connection mode; the drill rod connector is made of Bao steel 42CrMoA material; the cable 4 placed in the hole is supported and fixed by the split support rings at the two ends of the drill rod connector, and the vent holes are formed in the support rings.
The temperature sensor 6 is a thermal resistance temperature sensor with the model number PT 100.
The utility model discloses when using, will survey drill bit 1 and install the front end at communication drilling rod 2, use conventional hydraulic drill centre gripping communication drilling rod 2 to drive and survey drill bit 1 and creep into forward in coal seam 5, at the in-process that creeps into, temperature sensor 6 is used for real-time detection to survey the real-time temperature information of drill bit 1, and pass real-time temperature information to signal receiving device 3 through built-in cable 4 among the communication drilling rod 2, signal receiving device 3 is used for receiving, the temperature information of storage and demonstration drilling in-process survey drill bit 1, the utility model discloses survey the temperature variation data of drill bit 1 when can survey when being in the different drilling degree of depth, and carry out data statistical analysis with the leading-in computer of the temperature data of survey drill bit 1 of survey.
In order to improve the utility model discloses signal transmission's stability and improvement sensitivity will the utility model discloses a three-core tetrafluoro silvering wire is chooseed for use to connecting cable 4.
Claims (6)
1. The system for detecting the temperature of the drilling bit for drilling the coal bed containing gas is characterized by comprising a detection drilling bit (1), wherein the detection drilling bit (1) is connected with a signal receiving device (3) through a communication drill rod (2), and a temperature sensor (6) is arranged in the detection drilling bit (1) and is used for detecting the temperature information of the detection drilling bit (1) in real time; the communication drill rod (2) is used for transmitting real-time temperature information of the detection drill bit (1) in the drilling process; the signal receiving device (3) is used for receiving, storing and displaying temperature information of the detection drill bit (1) in the drilling process.
2. The system for detecting the temperature of the drill bit for drilling the coal bed containing the gas as claimed in claim 1, wherein the detection drill bit (1) is formed by connecting a drill bit (1.1) and an intermediate joint (1.2), a male support I (1.3) and a temperature sensor (6) are arranged in a male joint of the intermediate joint (1.2), a female support II (1.4) is arranged in a female joint of the intermediate joint (1.2), the female support II (1.4) and the male support I (1.3) are connected through a cable (4), the rear end of the intermediate joint (1.2) is connected with a communication drill rod (2) and is connected through a built-in cable (4) of the communication drill rod (2), and a smooth communication line is formed; when the intermediate joint (1.2) is connected with the drill bit (1.1), the temperature sensor (6) can stretch into the drill bit (1.1) to sense the temperature change of the drill bit (1.1) and transmit the temperature change outwards through the intermediate joint (1.2) and the cable (4) of the communication drill rod (2).
3. The system for detecting the temperature of the drill bit for drilling the gas-containing coal seam as claimed in claim 2, wherein a temperature measuring connecting rod is additionally arranged inside the detection drill bit (1), the detection drill bit (1) is provided with an inner connecting part, and a temperature sensor (6) is arranged on one side of the temperature measuring connecting rod close to the detection drill bit (1), so that the temperature sensor (6) is maximally close to the front end part of the drill bit.
4. The system for detecting the temperature of the drilling bit for the gas-containing coal seam drilling according to claim 1 or 2, wherein the communication drill rod (2) is in a plug-in connection mode and comprises a male joint (2.1), a rod body (2.2), a female joint (2.3), a male support III (2.4), a female support IV (2.5) and a cable (4), the male support III (2.4) is fixed in a cavity of the male joint (2.1), and the female support IV (2.5) is fixed in a cavity of the female joint (2.3); one end of the male head support III (2.4) is connected with one end of the female head support IV (2.5) through a cable (4), and the other end of the male head support III (2.4) and the other end of the female head support IV (2.5) are provided with binding posts which are mutually spliced.
5. The system for detecting the temperature of the drill bit for drilling the coal bed containing gas according to claim 1 or 2, wherein the communication drill rod (2) is a triangular temperature measuring drill rod, a cable (4) for data transmission is installed inside the drill rod, the cable (4) is in a three-strand plug-in type, a rod body of the triangular temperature measuring drill rod is in a triangular shape, drill rod connectors are welded to two sides of the rod body through high-temperature friction, and the drill rod connectors are in a hexagonal plug-in connection mode; the drill rod connector is made of Bao steel 42CrMoA material; the cable (4) placed in the hole is supported and fixed by the split supporting rings at the two ends of the drill rod connector, and the supporting rings are provided with ventilation holes.
6. The system for detecting the temperature of the drill bit for drilling the gas-containing coal seam as claimed in claim 1, wherein the temperature sensor (6) is a thermal resistance temperature sensor with the model number PT 100.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020212136.XU CN211623404U (en) | 2020-02-26 | 2020-02-26 | Temperature detection system for drilling bit of gas-containing coal layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020212136.XU CN211623404U (en) | 2020-02-26 | 2020-02-26 | Temperature detection system for drilling bit of gas-containing coal layer |
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| CN211623404U true CN211623404U (en) | 2020-10-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113156534A (en) * | 2021-04-19 | 2021-07-23 | 广州探霸仪器有限公司 | Control method, device and equipment of detection system and storage medium |
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- 2020-02-26 CN CN202020212136.XU patent/CN211623404U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113156534A (en) * | 2021-04-19 | 2021-07-23 | 广州探霸仪器有限公司 | Control method, device and equipment of detection system and storage medium |
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