CN204457749U - Drilling rod drilling depth measurement mechanism - Google Patents
Drilling rod drilling depth measurement mechanism Download PDFInfo
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- CN204457749U CN204457749U CN201420864054.8U CN201420864054U CN204457749U CN 204457749 U CN204457749 U CN 204457749U CN 201420864054 U CN201420864054 U CN 201420864054U CN 204457749 U CN204457749 U CN 204457749U
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- standard drill
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Abstract
The utility model provides a kind of drilling rod drilling depth measurement mechanism, drilling rod drilling depth measurement mechanism comprises measuring probe, measuring probe comprises the permanent magnet on the non-contacting standard drill pipe being sleeved on head and the tail docking, measuring probe also comprise be arranged at permanent magnet side, at drilling rod joint by exporting the magnetic induction sensor of corresponding signal during this permanent magnet.The joint of the detection signal criterion drilling rod exported by magnetic induction sensor in measurement mechanism provided by the utility model, whether by measuring probe, effectively can reduce the labour intensity of workman, improves the efficiency of workman.
Description
Technical field
The utility model relates to a kind of drilling rod drilling depth measurement mechanism.
Background technology
The attention degree of producing downhole safety along with coal mining enterprise is more and more higher, and coal mining enterprise adopts various means to carry out prevention mine disaster generation, strengthens safety in production.In a variety of causes causing mine disaster, Gas Outburst account for sizable proportion, down-hole limited space, once outburst Gas Outburst, a large amount of gas is not easy timely discharge, very easily causes mine disaster.The common practice of coal mining enterprise's prevention Gas Outburst adopts the mode detected in coal seam punching in advance to survey geological environment, by pipeline, the methane gas extraction in hole, coal seam utilized to ground.
At present, mostly be adopt rig to hole, during boring, by the unit head on rig, standard drill pipe is one by one crept into forward to carry out drilling operation, as shown in Figure 4, the middle part body of rod 100 place of each standard drill pipe has larger cavity to the docking of standard drill pipe head and the tail, and metal cross-sectional area is less, and the joint 200 of adjacent modular drilling rod exists seam, the metal cross-sectional area at seaming position place is also more greater than other body of rod positions of standard drill pipe.When the standard drill pipe of head and the tail docking is one by one squeezed in coal seam or rock stratum, the metering to standard drill pipe number is realized by workman's artificial counting, the length that counting number is multiplied by standard drill pipe can obtain drilling depth, after drilling depth reaches pre-provisioning request, again by standard drill pipe one by one exit boring, exiting in process, also checking obtain drilling depth by manually carrying out counting.
But because drilling rod is installed by manually completing and counting, artificial counting adds the labour intensity of workman on the one hand, affects workman's efficiency, on the other hand, also easily there is the counting error of thinking caused because workman is tired.
Utility model content
The utility model provides a kind of drilling rod drilling depth measurement mechanism, causes increasing the technical problem of labor strength to solve artificial the counting drilling rod number of main dependence in prior art.
The technical scheme of drilling rod drilling depth measurement mechanism provided by the utility model is: drilling rod drilling depth measurement mechanism, it is characterized in that: comprise measuring probe, measuring probe comprises the permanent magnet on the non-contacting standard drill pipe being sleeved on head and the tail docking, measuring probe also comprise be arranged at permanent magnet side, at drilling rod joint by exporting the magnetic induction sensor of corresponding signal during this permanent magnet.
Described magnetic induction sensor is by the Hall element group formed along the uniform multiple Hall voltage sensors of standard drill pipe circumference.
Described permanent magnet is loop configuration.
Described permanent magnet is intervally distributed with two along the standard drill pipe direction of motion, and the corresponding two permanent magnet interval setting pitch arrangement of described magnetic induction sensor have two.
Described measuring probe comprises the magnetic conduction armature bracket on the non-contacting standard drill pipe being sleeved on head and the tail docking, magnetic conduction armature bracket is provided with the interior perforation of passing for standard drill pipe, two permanent magnets are installed on magnetic conduction armature bracket along standard drill pipe direction of motion interval, and two magnetic induction sensors are installed on magnetic conduction armature bracket along standard drill pipe direction of motion interval.
Described magnetic conduction armature bracket is provided with middle magnetic guiding loop between two permanent magnets, and two magnetic induction sensors are distributed in the both sides of described middle magnetic guiding loop.
The beneficial effects of the utility model are: when using drilling rod drilling depth measurement mechanism provided by the utility model to measure drilling depth, there is the body of rod position of drilling rod different with the structure of head and the tail docking site, when the standard drill pipe of head and the tail docking is through measuring probe, the body of rod position of standard drill pipe and joint are to the magnetic resistance difference in the magnetic field of whole permanent magnet, the reacting condition of magnetic resistance is in the change of the magnetic induction intensity in magnetic field, at the head and the tail joint of adjacent modular drilling rod through permanent magnet through magnetic induction sensor, magnetic induction sensor senses because drilling rod joint causes magnetic circuit magnetic induction intensity to be undergone mutation through magnetic circuit reluctance sudden change during permanent magnet, export pulse detection signals, paired pulses detection signal counts, the length number of pulse detection signals being multiplied by standard drill pipe can obtain drilling depth.Whole measurement mechanism structure is simple, easy to use.And whether the joint of the detection signal criterion drilling rod exported by magnetic induction sensor in measuring method provided by the utility model is by measuring probe, effectively can reduce the labour intensity of workman, improve the efficiency of workman.Meanwhile, therefore in above-mentioned measuring method, measuring probe and the standard drill pipe of motion are that noncontact coordinates, and like this, can effectively avoid impacting measurement result when squeezing into or extract standard drill pipe.
Further, permanent magnet adopts permanent-magnetic clamp, and magnetic field is effective, can improve accuracy of detection.
Accompanying drawing explanation
Fig. 1 is the structural representation that drilling rod drilling depth measurement mechanism provided by the utility model is arranged on rig;
Fig. 2 is measuring probe structural representation in Fig. 1;
Fig. 3 is A-A sectional view in Fig. 2;
The sequential chart of two magnetic induction sensor output pulse signals when Fig. 4 is drilling rod positive movement;
The sequential chart of two magnetic induction sensor output pulse signals when Fig. 5 is drilling rod counter motion;
Fig. 6 is drilling rod syndeton schematic diagram.
Detailed description of the invention
As shown in Figures 1 to 6, a kind of embodiment of drilling rod drilling depth measurement mechanism, measurement mechanism in this embodiment comprises measuring probe 32 and detects main frame 33, measuring probe 32 in the present embodiment is directly installed on the clamper 31 of rig in use, and measuring probe 32 is sleeved on standard drill pipe 34 in use.
Measuring probe herein comprises for the magnetic conduction armature bracket 40 on the non-contacting standard drill pipe 34 being sleeved on head and the tail docking, magnetic conduction armature bracket 40 is provided with the interior perforation of passing for standard drill pipe, magnetic conduction armature bracket 40 is installed with two permanent magnets along standard drill pipe direction of motion interval, two permanent magnets are for the loop configuration on the non-contacting standard drill pipe 34 being sleeved on head and the tail docking, and two permanent magnets are respectively the first permanent magnet 42 and the second permanent magnet 47.Also comprise in measuring probe respectively corresponding be arranged on two permanent magnet sides, at drilling rod joint by exporting the magnetic induction sensor of corresponding signal during corresponding permanent magnet, corresponding two permanent magnets of magnetic induction sensor are herein provided with two, two magnetic induction sensors are A sensor 44 and B sensor 46, and each magnetic induction sensor is all for by along the Hall element group that forms of the uniform multiple Hall voltage sensors 44 of standard drill pipe circumference.
In addition, magnetic conduction armature bracket 40 is provided with the both sides that middle magnetic guiding loop 45, two magnetic induction sensor is distributed in described middle magnetic guiding loop 45 between two permanent magnets.
The pulse signal that two magnetic induction sensors export flows to and detects main frame 33 after signal processor processes, is counted, counting number is multiplied by the length of standard drill pipe, can obtains drilling depth by detection main frame 33 paired pulses detection signal.
The measurement mechanism that the present embodiment provides in use, measuring probe 32 is installed on clamper 31, measuring probe 32 is non-contacting to be sleeved on standard drill pipe 34, when the unit head on rig is by successional for the standard drill pipe of the head and the tail docking shown in Fig. 6 squeezing in coal seam or rock stratum 6, when drill rod body part is through measuring probe 32, because in the middle part of the drilling rod as magnetic conduction iron material, space is large, whole magnetic circuit reluctance increases, and when the joint of adjacent drill pipes is through measuring probe, the magnetic resistance of whole magnetic circuit diminishes, in the change of magnetic resistance change rate reaction magnetic induction intensity around drilling rod, after this change being detected by two magnetic induction sensors, export corresponding pulses detection signal.Specifically, drilling rod joint is greater than through the impact of permanent magnet on whole magnetic field the impact that drill rod body causes whole magnetic field through permanent magnet, therefore, two magnetic induction sensors can by effectively distinguishing the change with the magnetic induction intensity of drill rod body and drilling rod joint.
And, in the present embodiment, be provided with two cover permanent magnets and corresponding two cover magnetic induction sensors in measuring probe, two cover magnetic induction sensors are no more than a tool joint length along the axial spacing of the standard drill pipe direction of motion, send pulse detection signals respectively by two magnetic induction sensors.
As shown in Figure 4, the now standard drill pipe positive movement when standard drill pipe enters probe from left side, the standard drill pipe of head and the tail docking is squeezed into rock stratum by rig, the A sensor being in left side in two cover testing circuits first exports the pulse signal corresponding with standard drill pipe docking site, exports the pulse signal corresponding with standard drill pipe docking site after being in the B sensor on right side.When standard drill pipe continues to move forward, the pulse signal corresponding with standard drill pipe docking site that the A sensor being in left side exports first disappears, and disappears after the pulse signal corresponding with standard drill pipe docking site that the B sensor being in right side exports.
As shown in Figure 5, when standard drill pipe counter motion, the sequential of signal appearance and disappearance is with just in time contrary during standard drill pipe positive movement.
Like this, two two cover magnetic induction sensors can be utilized to carry out the direction of motion of criterion drilling rod, the number of the pulse detection signals that two cover magnetic induction sensors can also be exported respectively is mutually confirmed or revises the counting number that detection main frame obtains, to improve the correctness to useful signal counting number.
In above-described embodiment, two permanent magnets are provided with in measuring probe, in other embodiments, also can single permanent magnet be only set, this permanent magnet can be arranged a magnetic induction sensor, also can arrange a magnetic induction sensor respectively in the both sides, front and back along the direction of motion of standard drill pipe in permanent magnet.
In above-described embodiment, permanent magnet is loop configuration, and in other embodiments, permanent magnet also can for the U-shaped structure that can be sleeved on standard brick drilling rod.
In above-described embodiment, permanent magnet and magnetic induction sensor are arranged on magnetic conduction armature bracket, improve measuring probe internal magnetic field environment, improve certainty of measurement.
Use the embodiment of the drilling rod drilling depth measuring method of above-mentioned measurement mechanism, the measuring method in this embodiment is as follows:
Rig by head and the tail docking standard drill pipe squeeze into, extract time, the joint of adjacent drill pipes is through measuring probe, magnetic induction sensor exports pulse detection signals, and paired pulses detection signal counts, and the length number of pulse detection signals being multiplied by standard drill pipe can obtain drilling depth.
And, because the permanent magnet in described measuring probe is intervally distributed with two along the standard drill pipe direction of motion, the corresponding two permanent magnet interval setting pitch arrangement of described magnetic induction sensor have two, and the sequencing sending respective pulses detection signal by detecting two magnetic induction sensors judges drilling rod moving direction.
Direction of motion when being squeezed into by standard drill pipe is defined as forward, when the sequencing that two magnetic induction sensors export pulse detection signals occurs successively according to described forward, criterion drilling rod positive movement, when two magnetic induction sensors export the sequencing of pulse detection signals according to when oppositely occurring successively, the counter motion of criterion drilling rod, when the standard drill pipe of head and the tail docking is squeezed into by rig, by the direction of motion of criterion drilling rod, described pulse detection signals number is revised, when two magnetic induction sensors export the sequencing of pulse detection signals according to when oppositely occurring N time, described pulse detection signals number is deducted N.
The measuring method that the present embodiment provides in use, when the standard drill pipe of head and the tail docking is through measuring probe, the body of rod position of standard drill pipe and joint are to the magnetic resistance difference in the magnetic field of whole permanent magnet, the reacting condition of magnetic resistance is in the change of the magnetic induction intensity in magnetic field, at the head and the tail joint of adjacent modular drilling rod through permanent magnet through magnetic induction sensor, magnetic induction sensor senses because drilling rod joint and drilling rod shaft cause magnetic circuit magnetic induction intensity to change through magnetic circuit reluctance change during permanent magnet, export pulse detection signals, paired pulses detection signal counts, the length number of pulse detection signals being multiplied by standard drill pipe can obtain drilling depth.
In addition, can also by the direction of motion of the sequential criterion drilling rod to two magnetic induction sensor output signals, when drilling rod is squeezed in coal seam by rig, host record number can also be detected by the time ordered pair of two magnetic induction sensor output signals and revises, improve accuracy of detection.
Claims (6)
1. drilling rod drilling depth measurement mechanism, it is characterized in that: comprise measuring probe, measuring probe comprises the permanent magnet on the non-contacting standard drill pipe being sleeved on head and the tail docking, measuring probe also comprise be arranged at permanent magnet side, at drilling rod joint by exporting the magnetic induction sensor of corresponding signal during this permanent magnet.
2. drilling rod drilling depth measurement mechanism according to claim 1, is characterized in that: described magnetic induction sensor is by the Hall element group formed along the uniform multiple Hall voltage sensors of standard drill pipe circumference.
3. drilling rod drilling depth measurement mechanism according to claim 1, is characterized in that: described permanent magnet is loop configuration.
4. the drilling rod drilling depth measurement mechanism according to claim 1 or 2 or 3, is characterized in that: described permanent magnet is intervally distributed with two along the standard drill pipe direction of motion, and the corresponding two permanent magnet interval setting pitch arrangement of described magnetic induction sensor have two.
5. drilling rod drilling depth measurement mechanism according to claim 4, it is characterized in that: described measuring probe comprises the magnetic conduction armature bracket on the non-contacting standard drill pipe being sleeved on head and the tail docking, magnetic conduction armature bracket is provided with the interior perforation of passing for standard drill pipe, two permanent magnets are installed on magnetic conduction armature bracket along standard drill pipe direction of motion interval, and two magnetic induction sensors are installed on magnetic conduction armature bracket along standard drill pipe direction of motion interval.
6. drilling rod drilling depth measurement mechanism according to claim 5, it is characterized in that: described magnetic conduction armature bracket is provided with middle magnetic guiding loop between two permanent magnets, two magnetic induction sensors are distributed in the both sides of described middle magnetic guiding loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864054.8U CN204457749U (en) | 2014-12-31 | 2014-12-31 | Drilling rod drilling depth measurement mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864054.8U CN204457749U (en) | 2014-12-31 | 2014-12-31 | Drilling rod drilling depth measurement mechanism |
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| Publication Number | Publication Date |
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| CN204457749U true CN204457749U (en) | 2015-07-08 |
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| CN201420864054.8U Active CN204457749U (en) | 2014-12-31 | 2014-12-31 | Drilling rod drilling depth measurement mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500039A (en) * | 2014-12-31 | 2015-04-08 | 郑州光力科技股份有限公司 | Drill pipe drilling depth measuring device and measuring method by using measuring device |
| CN107642354A (en) * | 2017-09-01 | 2018-01-30 | 山东科技大学 | Drilling rod is exited after drilling to the measuring method of drillable length |
-
2014
- 2014-12-31 CN CN201420864054.8U patent/CN204457749U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500039A (en) * | 2014-12-31 | 2015-04-08 | 郑州光力科技股份有限公司 | Drill pipe drilling depth measuring device and measuring method by using measuring device |
| CN107642354A (en) * | 2017-09-01 | 2018-01-30 | 山东科技大学 | Drilling rod is exited after drilling to the measuring method of drillable length |
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| GR01 | Patent grant | ||
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Address after: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee after: Power Polytron Technologies Inc Address before: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee before: Zhengzhou GL Tech Company |
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| CP01 | Change in the name or title of a patent holder |