CN101509351B - Non-damage drilling head - Google Patents
Non-damage drilling head Download PDFInfo
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- CN101509351B CN101509351B CN2009103008818A CN200910300881A CN101509351B CN 101509351 B CN101509351 B CN 101509351B CN 2009103008818 A CN2009103008818 A CN 2009103008818A CN 200910300881 A CN200910300881 A CN 200910300881A CN 101509351 B CN101509351 B CN 101509351B
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Abstract
The invention relates to a damage-free drilling bit. The damage-free drilling bit comprises a drill, a bit and a drill pipe; an annular detecting coil trough is opened along the circumference on the external diameter close to the bottom of the bit; a detecting coil is arranged in the trough; a notch is covered by a bezel ring of the detecting coil and the clearance is adhered by glue until the surface is smooth; the bit is provided with a detecting circuit board trough; a detecting circuit board is sealed in the trough; a covering board is fixed on the notch and the clearance is adhered by glue until the surface is smooth; a small hole for placing a circuit control switch is reserved on the covering board; the upper part of the bit is provided with an annular alarm transmitting coil trough along the circumference; an alarm signal issuing coil is placed in the trough; the notch is covered by a bezel ring of the transmitting coil and the clearance is adhered by glue until the surface issmooth; and the detecting coil and the alarm signal transmitting coil are respectively connected with the detecting circuit. The damage-free drilling bit can avoid damage to underground metal pipe network while improving detection precision.
Description
Technical field
The invention belongs to the drilling equipment of a kind of subterranean survey and metal detection, particularly a kind of drilling equipment that can survey underground metal pipeline.
Background technology
Be accompanied by developing rapidly of city, the pipeline of the various band metals of land burial is also more and more, and this just causes a lot of difficulties to subterranean survey, in case damaged underground utilities in work progress, all can bring greater loss to the pipeline owner and exploration construction party.Because existing drilling equipment does not possess underground metal detection function, in the exploration process, the underground metal pipe line that buries is caused damage, common way is with detecting devices this zone to be surveyed earlier, determine the general orientation of land burial metallic network of pipelines, avoid possible position, and then carry out probing work.The probe diameter of common metal detector is bigger, and detection range is far away, therefore causes positioning accuracy lower.Metal detector is of a great variety, and function is different, and the detection range that has is bigger, and what have can distinguish different kinds of metals, and at present performance is higher surely belongs to ground penetrating radar, and it can not only survey metal, can also survey the non-metal solid thing, and can be presented on the screen.Though have multiple probe to select for use, all have the lower problem of precision: the common metal probe can only the underground metal that has or not of perception, can not measure accurate position; Ground penetrating radar can realize high accuracy on principle, remain a lot of difficulties in the real work, as search coverage is known nothing, the detection line of being laid deviation can occur unavoidably, will produce omission in the detection process, simultaneously, processing and deciphering to detection data, all to rely on the working experience that operating personnel have under a lot of situations and judge that may produce human factor thus influence measurement result, cause the lower situation appearance of measuring accuracy; Ground penetrating radar also exists equipment huge simultaneously, is subjected to problems such as job site restriction, and use cost is higher.Because can not accurately judge the physical location of metallic network of pipelines, accidents happened unavoidably in the drilling process.
Summary of the invention
The purpose of this invention is to provide a kind of non-damage drilling head equipment, solve the technical problem of the metallic network of pipelines of avoiding in drilling process, injuring land burial.
The present invention adopts following technical scheme: this non-damage drilling head equipment, comprise rig and drill bit, drilling rod, and it is characterized in that:
Have annular search coil groove at drill bit by external diameter upper edge, bottom circumference, place search coil in the groove, the search coil bezel ring, covers on notch, and the place, slit is connected to surfacing by gluing;
Have the detection circuit board slot on the drill bit, the detection circuit plate is sealed in the groove, and cover plate is fixed on above the notch, and slit place is connected to surfacing by gluing, leaves the aperture of laying circuit controling switch on the cover plate;
Drill bit top has annular alarm transmission coil groove along circumference, puts into the alarm signal transmitting coil in the groove, and the transmitting coil bezel ring, covers on notch, and slit place is connected to surfacing by gluing;
Search coil groove, detection circuit board slot and alarm transmission coil groove are communicated with by axial connectivity slot;
Search coil and alarm signal transmitting coil link to each other with detection circuit on the detection circuit plate respectively;
The alarm signal receiving coil is installed on rig, and drilling rod passes from the alarm signal receiving coil, and the alarm signal receiving coil is connected with warning circuit on being installed in rig.
Above-mentioned drill bit and short circuit connect into lengthening drill bit, and detection circuit board slot and annular alarm transmission coil groove leave on short circuit.
Above-mentioned warning circuit can be connected with warning lamp with buzzer.
Can scribble sealing compound in above-mentioned detection circuit board slot and the annular alarm transmission coil groove groove, search coil and alarm signal transmitting coil are bonded in the groove.
Can scribble sealing compound in the above-mentioned detection circuit board slot, the detection circuit plate scribbles waterproofing course, and the bottom of detection circuit plate is bonding by sealing compound.
Above-mentioned detection circuit constitutes a capacitance connecting three point type oscillator by phase inverter and capacitor, capacitance connecting three point type oscillator is connected with adjustable potentiometer RP, the signal receiving end of capacitance connecting three point type oscillator is connected with search coil, the signal output part of capacitance connecting three point type oscillator is connected with diode P2 with sign-changing amplifier, diode P1 rectification circuit, amplifier successively, diode P2 is connected with the signal input part of audio frequency oscillator, the output of audio frequency oscillator connects the alarm signal transmitting coil, and the alarm signal receiving coil is connected with warning circuit.
Operating principle of the present invention is: metal object occurs in certain distance below drill bit, after detection circuit is handled the detected signal of search coil, by the alarm signal transmitting coil alarm signal is sent on the ground by drilling rod, the alarm signal receiving coil reaches warning circuit after receiving signal, send sound, visual alarm then, allow operating personnel take safety measures ahead of time.Because the residing working environment of drilling tool is more abominable, rotation, vibration, mud contamination etc. transmit relatively difficulty of signal with cable, so the present invention adopt the mode of wireless transmit and received signal.
Beneficial effect of the present invention is as follows:
The present invention installs the detection alarm device that a cover has underground metal detection function on drilling equipment, metal detection and warning device and drilling equipment are united two into one, form an organic whole, be with the difference of common metal probe: the probe of common metal probe can only be surveyed along ground on the ground, and probe of the present invention is a drill bit, detecting function is combined in creeping into function, become the metal detection drill bit, detection process underground with bit drills and then carry out synchronously.
Because the restriction of drilling tool and working environment, probe designs also is restricted, and the more common metal detector of detection range of the present invention is little a lot, and this is fatal shortcoming to common metal detector, but becomes advantage of the present invention at this.Its reason is: probe can extend gradually along with drilling tool, just can send alarm signal when having only near metallic network of pipelines, and short distance is reported to the police and improved the warning degree of accuracy, and has improved detection accuracy.Solve underground may the survey in city thus and used the low problem of single metal detector (comprising ground penetrating radar) precision in the work progress, had advantages of high practicability.
Description of drawings
Fig. 1 is for surveying drill bit assembling schematic diagram.
Fig. 2 is the detection principle block diagram of non-damage drilling head equipment.
Fig. 3 is the scheme of installation of non-damage drilling head equipment on rig.
Fig. 4 is circuit theory diagrams of the present invention.
Among the figure: 1-search coil, 2-detection circuit plate, 3-alarm signal transmitting coil, 4-alarm signal receiving coil, 5-warning circuit, 6-buzzer, 7-warning lamp, 8-drill bit, 9-annular search coil groove, the axial connectivity slot of 10-, 11-short circuit, 12-detection circuit board slot, 13-annular alarm transmission coil groove, 14-transmitting coil bezel ring,, 15-cover plate, 16-search coil bezel ring,, 17-rig, 18-drilling rod, 19-aperture.
The specific embodiment
Referring to Fig. 1, shown in Figure 2, non-damage drilling head equipment is divided into two parts: the search coil 1 on a. drilling tool, detection circuit plate 2, alarm signal transmitting coil 3; B. ground alarm signal receiving coil 4, warning circuit 5, buzzer 6, warning lamp 7.
Referring to shown in Figure 1, drill bit 8 links together with short circuit 11, has annular search coil groove 9 by on the bottom position on the drill bit 8, places search coil 1 in the groove; Have detection circuit board slot 12 on the short circuit 11, detection circuit plate 2 places in the groove; Cover plate 15 is fixed on above the notch, and slit place is connected to surfacing by gluing, leaves the aperture 19 of laying circuit controling switch on the cover plate 15;
The top of short circuit 11 has annular alarm transmission coil groove 13, is used to place alarm transmission coil 3; Search coil groove 9, detection circuit board slot 12 and alarm transmission coil groove 13 are communicated with by axial connectivity slot 10, and coil is connected with circuit.
Referring to shown in Figure 3, alarm signal receiving coil 4 is installed on the rig 17, and drilling rod 18 passes from the center of alarm signal receiving coil 4, and the signal that alarm signal transmitting coil 3 sends sends to alarm signal receiving coil 4 by drilling rod 14; Warning circuit 5, buzzer 6 and warning lamp 7 are placed on the rig, and to receive alarm signal be good to help operating personnel in its position.
Mounting method of the present invention is as follows:
1, the processing of drill bit and installation
Drill bit has polytype, and every type also has different bores; In specific implementation process, if select common commercially available drill bit for use, its length is shorter usually for these drill bits, wall thickness is thinner, the detection circuit plate is installed above being difficult in, therefore can is processed and install by mode shown in Figure 1: the bore of selecting to match with drill bit 8 be processed a short circuit 11, and the hole is opened at short circuit 11 centers, drilling fluid can be circulated, and the wall thickness of short circuit 11 is generally in 25mm; Short circuit 11 is connected with drill bit 8 by screw thread, make its one-tenth as a whole, leaning on open loop shape search coil groove 9 on the bottom position on the drill bit 8 then, on short circuit 11, open detection circuit board slot 12 and alarm signal line of departure ring recess 13, open a thin connectivity slot 10 in the axial direction annular search coil groove 9, detection circuit board slot 12, annular alarm transmission coil groove 13 are communicated with, the size of being slotted is by the drill bit bore and the decision of detection circuit plate of correspondence.In the groove of being processed, coat sealing compound, enamel-covered wire is entangled to annular search coil groove 9 and alarm signal line of departure ring recess 13 by the design number of turns, constitute search coil 1 and alarm signal transmitting coil 3 respectively, be coated with sealing compound then thereon, transmitting coil bezel ring, 14 and search coil bezel ring, 16 are put into correspondence position, smooth with the gluing rear surface that connects.The end of a thread of search coil 1 and alarm signal transmitting coil 3 is welded on the corresponding contact of detection circuit plate 2, then circuit board is made waterproofing work, put into detection circuit board slot 12, make the sealing compound of itself and bottom bonding, again cover plate 15 is fixed in the above.When needs use, by the aperture on the cover plate 15 19 circuit controling switch to be pressed, detection circuit begins to start; Couple together and just can carry out work surveying drill bit and drilling tool.
If the drill bit length of selecting for use when producing drill bit is big, wall thickness, satisfy the requirement of surveying drill bit, then needn't reprocess short circuit 11, directly processing search coil groove 9, detection circuit board slot 12 and annular alarm transmission coil groove 13 on drill bit.
2, detection circuit plate
Because the restriction of bit size, the space of laying circuit board is very limited, therefore circuit is principle with simple and practical, the components and parts of same parameter are selected the volume smaller for use, circuit board is selected the flexible board of thinner thickness for use, help circuit board like this and dwindle shared space, make more small-bore drill bit also can be processed into the drill bit of band detecting function.
The operating principle of circuit adopts the detection circuit of the less CMOS hex inverter formation of components and parts referring to Fig. 4.Search coil 1 adopts the inductance L 1 of a high Q value, and it and phase inverter and capacitor have constituted a capacitance connecting three point type oscillator.Regulator potentiometer RP can make circuit be in the state of starting of oscillation just, faint oscillator signal amplifies by the sign-changing amplifier of being made up of phase inverter and resistance, carry out rectification by diode P1 again, signal after the rectification is amplified by amplifier again, goes to control the duty of audio frequency oscillator at last by diode P2.
The inductance L 1 of drill bit bottom not near metal object the time, the normal starting of oscillation of circuit.Oscillator signal control audio frequency oscillator quits work, and alarm signal transmitting coil 3 does not have signal output at this moment.When drill bit during near metal object (axial direction of inductance coil), the Q value of inductance L 1 descends, the circuit failure of oscillation.Do not have the signal audio frequency oscillator that disinthibites, so audio frequency oscillator starts working, audio signal is transmitted into ground by alarm signal transmitting coil 3 by drilling rod.During use, connect power supply after, carefully adjusts potentiometer RP the buzzer of warning circuit is not just rung, or warning lamp just do not work, sensitivity at this moment is higher, detection range is bigger.When the inductance L 1 of drill bit bottom near during metal object, the buzzer of warning circuit sounds, or warning lamp lights, and finishes detection alarm.
3, warning part: alarm signal receiving coil 4 is installed on the rig that is positioned at drill rod axis, and promptly drilling rod passes from alarm signal receiving coil 4, is advisable not hinder rig work in its position.Transmit alarm signal by drilling rod, can use comparatively simple emission and receiving circuit, this is more favourable to the extremely limited detection drill bit in space; Received signal is also reliable simultaneously.Alarm is selected device commonly used such as buzzer 6, warning lamp 7 for use, and it is installed in the position that operating personnel easily see and hear.
Claims (5)
1. a non-damage drilling head equipment comprises rig (17) and drill bit (8), drilling rod (18), it is characterized in that:
Described drill bit (8) has annular search coil groove (9) by external diameter upper edge, bottom circumference, places search coil (1) in the groove, and search coil bezel ring, (16) covers on notch, and the place, slit is connected to surfacing by gluing;
Described drill bit (8) connects into lengthening drill bit with short circuit (11), have detection circuit board slot (12) on the short circuit (11), detection circuit plate (2) is sealed in the groove, cover plate (15) is fixed on above the notch, slit place is connected to surfacing by gluing, leaves the aperture (19) of laying circuit controling switch on the cover plate (15);
The top of short circuit (11) has annular alarm transmission coil groove (13) along circumference, puts into alarm signal transmitting coil (3) in the groove, and transmitting coil bezel ring, (14) covers on notch, and slit place is connected to surfacing by gluing;
Search coil groove (9), detection circuit board slot (12) and alarm transmission coil groove (13) are communicated with by axial connectivity slot (10);
Search coil (1) and alarm signal transmitting coil (3) link to each other with detection circuit on the detection circuit plate (2) respectively;
At rig (17) alarm signal receiving coil (4) go up to be installed, drilling rod (18) passes from alarm signal receiving coil (4), and alarm signal receiving coil (4) is connected with warning circuit (5) on being installed in rig.
2. non-damage drilling head equipment according to claim 1 is characterized in that: above-mentioned warning circuit (5) is connected with warning lamp (7) with buzzer (6).
3. non-damage drilling head equipment according to claim 1, it is characterized in that: scribble sealing compound in above-mentioned detection circuit board slot (12) and annular alarm transmission coil groove (13) groove, search coil (1) and alarm signal transmitting coil (3) are bonded in the groove.
4. non-damage drilling head equipment according to claim 1 is characterized in that: scribble sealing compound in the above-mentioned detection circuit board slot (12), detection circuit plate (2) scribbles waterproofing course, and the bottom of detection circuit plate (2) is bonding by sealing compound.
5. non-damage drilling head equipment according to claim 1, it is characterized in that: above-mentioned detection circuit constitutes a capacitance connecting three point type oscillator by phase inverter and capacitor, capacitance connecting three point type oscillator is connected with adjustable potentiometer RP, the signal receiving end of capacitance connecting three point type oscillator is connected with search coil (1), the signal output part of capacitance connecting three point type oscillator successively with sign-changing amplifier, diode P1 rectification circuit, amplifier is connected with diode P2, diode P2 is connected with the signal input part of audio frequency oscillator, the output of audio frequency oscillator connects alarm signal transmitting coil (3), and alarm signal receiving coil (4) is connected with warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103008818A CN101509351B (en) | 2009-03-16 | 2009-03-16 | Non-damage drilling head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103008818A CN101509351B (en) | 2009-03-16 | 2009-03-16 | Non-damage drilling head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101509351A CN101509351A (en) | 2009-08-19 |
| CN101509351B true CN101509351B (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103008818A Active CN101509351B (en) | 2009-03-16 | 2009-03-16 | Non-damage drilling head |
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| CN (1) | CN101509351B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468539B (en) * | 2018-03-29 | 2021-08-24 | 东南大学 | Drill bit pressure real-time measuring device during construction of cement soil mixing pile |
| CN114542048A (en) * | 2022-02-24 | 2022-05-27 | 济南市勘察测绘研究院 | Drilling machine with pipeline detection function and detection method |
| CN114986715A (en) * | 2022-05-20 | 2022-09-02 | 中化学交通建设集团有限公司 | Intelligent automatic drilling device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657743A (en) * | 2004-02-16 | 2005-08-24 | 中国石油勘探开发研究院钻井工艺研究所 | Method and device for measuring resistivity by device near bit |
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2009
- 2009-03-16 CN CN2009103008818A patent/CN101509351B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657743A (en) * | 2004-02-16 | 2005-08-24 | 中国石油勘探开发研究院钻井工艺研究所 | Method and device for measuring resistivity by device near bit |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-284910A 2007.11.01 |
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| CN101509351A (en) | 2009-08-19 |
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Inventor after: Teng Yanjing Inventor after: Fang Xuesong Inventor after: Li Bolun Inventor before: Teng Yanjing Inventor before: Fang Xuesong Inventor before: Li Bolun |