CN105043447A - Drilling rig testing device under selenographic environment - Google Patents
Drilling rig testing device under selenographic environment Download PDFInfo
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- CN105043447A CN105043447A CN201510490071.9A CN201510490071A CN105043447A CN 105043447 A CN105043447 A CN 105043447A CN 201510490071 A CN201510490071 A CN 201510490071A CN 105043447 A CN105043447 A CN 105043447A
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Abstract
The invention discloses a drilling rig testing device under selenographic environment. A drilling rig polished shaft, a polished shaft joint, a sealing joint, a lead joint, a composite force sensor, a sensor joint, a drilling rod joint, a drilling rod and a drilling head are coaxially connected with one another sequentially from top to bottom so as to form the drilling rig testing device; an electric conduction slip rings sleeve the drilling rig polished shaft; temperature sensors are uniformly and circumferentially distributed at the inner wall of the drilling rod; four temperature sensors are installed at four temperature measuring points of the drilling head and are respectively located at the contact point of the drilling head and the drilling rod, at the contact point of a drilled object and the wall surface of a drilling hole of the drilling head, at the contact point of the outer wall of the drilling head and the drilled object, and at the contact point of the cutting edge of the drilling head and the drilled object; and signal lines of the temperature sensors and the composite force sensor are led out through the electric conduction slip ring. With the drilling rig testing device of the invention adopted, the drilling pressure, torque and temperature rise condition of a drilling rig under a vacuum thermal environment can be measured in real time; the temperature rise condition of the drilling rig can be reflected in an all-dimensional manner; and the problem that the signal lines are wound on the drilling rig polished shaft in a drilling rig rotation process can be solved.
Description
Technical field
The invention belongs to space resources field of detecting, relate to drilling tool proving installation under a kind of lunar surface environment, be specifically related to the proving installation of the pressure of the drill power of drilling tool under a kind of vacuum high/low temperature environment, moment of torsion and temperature.
Background technology
Since ancient times, people have just expressed the reverie of true feelings and the praise of poetic atmosphere to the moon, and just there is the legend that The Goddess Chang'e flew to the moon in the China before 3,000 years.The moon is always the astronomical movable preferred object of the mankind, is also that the mankind walk out earth cradle, the first step in immense universe of marching toward.Climbing up the moon, set up permanent base, is human development space resources, explores more opportunity for survival the vital beginning.The U.S., the Soviet Union and Japan successively land on the moon, and gather lunar soil sample and return.
In the face of the lunar exploration upsurge of a new round, China has formulated goddess in the moon's lunar exploration plan of three-step-march: namely " around ", " falling ", " returning ", wherein first two steps realize.The main task of China's goddess in the moon's moon exploration program three phase, for launching unmanned lunar surface lander, is carried out drilling through sampling, and the sample Returning ball of collection is carried out scientific research.According to project planning requirement, what lander carried drill through, and sampling drilling tool need reach can creep into the lunar soil collected specimens that at least 2m is dark.
The drilling process of ground environment, has the preliminary exploration to drilling geological stratification in advance, chooses suitable drilling bottom.If the fault such as bit freezing, the burning of bits appears in drilling process, staff can stop creeping in real time, changes drilling tool, fixes a breakdown.And containing a large amount of steam in the soil sample of drilling, drilling object thermal conductivity is comparatively large, and can by form auxiliary heat dissipations such as water fillings, the heat that drilling tool produces can be good at transmitting and diffusion.
Menology environment is very harsh, and atmospheric density only has 1/1012 of earth environment, belongs to ultra-high vacuum environment.Menology temperature the meridian hour can reach 130 DEG C, and the time-division at midnight is then low to moderate-180 DEG C, and day and night temperature can reach about 300 DEG C.The temperature of lunar soil, along with the increase of the degree of depth, below 300mm is substantially constant at about-30 DEG C, belongs to low temperature environment.Compared to the drilling process of ground environment, cannot by form auxiliary heat dissipations such as water fillings in drilling process under menology environment, in addition the harsh environments that causes of the high vacuum of lunar surface, the thermal conductivity of lunar soil extreme difference and solar radiation, and the menology stratum of boring with sampling is full of non-intellectual, very likely meet with lunar rock, thus the temperature making drilling tool in sampling process reach very high, cause structural member to destroy the even burning of bits, cause drilling to sample mission failure.In addition, too high temperature also can produce unknowable impact to lunar soil, directly affects sampling quality.
How to verify drilling tool in lunar surface environment can reliably working, complete and drill through sampling task smoothly, become current urgent problem.
Summary of the invention
The present invention realizes drilling tool work reliable and stable under lunar surface environment, avoids sampling unsuccessfully, propose drilling tool proving installation under a kind of lunar surface environment, realize carrying out drilling through test in the thermal vacuum environment of a simulation moonscape sampling environment, measure, gather and analyze the temperature variations of drilling tool self and surrounding environment in drilling process, grope the maximum heat border of drilling condition, identify propagation and the dissipation approach of heat, foundation can being provided for selecting rational drilling tool design parameter and drilling parameter, providing reference for creeping into code research.
Drilling tool proving installation under lunar surface environment of the present invention, comprises conducting slip ring, drilling tool optical axis, optical axis joint, sealing adaptor, pigtail splice, sensor of composite forces, sensor connector, drill pipe sub, drilling rod, drill bit, thermocouple temperature sensor.Wherein, conducting slip ring coaxial sleeve is connected on drilling tool optical axis; Drilling tool optical axis bottom is coaxially connected successively with optical axis joint, sealing adaptor, pigtail splice, sensor of composite forces, sensor connector, drill pipe sub.Described sensor of composite forces has drilling rod pressure survey and torque measurement function.
Above-mentioned drilling rod internal circumferential is evenly equipped with thermocouple temperature sensor; Drill bit is provided with 4 thermocouple sensors, 4 thermocouple sensors lay respectively at 4 point for measuring temperature places on drill bit, make 4 points for measuring temperature be respectively 1 ~ No. 4 point for measuring temperature, then:
No. 1 point for measuring temperature is positioned at drill bit and drilling rod connecting contact position.
No. 2 points for measuring temperature are positioned at the boring wall contacting points position creeping into object and drill bit.
No. 3 points for measuring temperature are positioned at drill bit outer wall and creep into object contact point position.
No. 4 points for measuring temperature are positioned at the cutting edge of drill bit and creep into object contact point position.
The signal wire of above-mentioned thermocouple temperature sensor and sensor of composite forces is all drawn by conducting slip ring.
The invention has the advantages that:
1, drilling tool proving installation under lunar surface environment of the present invention, the drilling pressure of measurement drilling tool under thermal vacuum environment, moment of torsion and temperature rise situation that can be real-time, and the data of collection are stored;
2, drilling tool proving installation under lunar surface environment of the present invention, thermocouple temperature sensor layout gamut contains drilling tool, and thermopair directly contacts with drilling tool, can the temperature rise situation of omnibearing reaction drilling tool;
3, drilling tool proving installation under lunar surface environment of the present invention, successfully avoid in drilling tool rotation process, signal wire can be wrapped in the problem on drilling tool optical axis.
Accompanying drawing explanation
Fig. 1 is drilling tool proving installation one-piece construction schematic diagram under lunar surface environment of the present invention;
Fig. 2 is that under lunar surface environment of the present invention, drilling tool proving installation joint is analysed and observe and inner cabling mode schematic diagram;
Fig. 3 is optical axis joint and sealing adaptor docking mode schematic diagram in drilling tool proving installation under lunar surface environment of the present invention;
Fig. 4 is sealing adaptor and pigtail splice docking mode schematic diagram in drilling tool proving installation under lunar surface environment of the present invention;
Fig. 5 is sensor of composite forces and pigtail splice docking mode schematic diagram in drilling tool proving installation under lunar surface environment of the present invention;
Fig. 6 is sensor connector and sensor of composite forces docking mode schematic diagram in drilling tool proving installation under lunar surface environment of the present invention;
Fig. 7 is drill pipe sub and sensor connector docking mode schematic diagram in drilling tool proving installation under lunar surface environment of the present invention;
Fig. 8 is 4 place's point for measuring temperature position views on drill bit in drilling tool proving installation under lunar surface environment of the present invention;
Fig. 9 is that under lunar surface environment of the present invention, on drilling tool proving installation drill bit, thermocouple mounting hole offers position view;
Figure 10 is the installation of TC frock schematic diagram in drilling tool proving installation under lunar surface environment of the present invention;
Figure 11 is position view when the installation of TC frock stretches into drilling rod in drilling tool proving installation under lunar surface environment of the present invention;
Figure 12 be under lunar surface environment of the present invention in drilling tool proving installation the installation of TC frock laminating drilling rod time position view;
Figure 13 is the Signal transmissions acquisition system structured flowchart of drilling tool proving installation under lunar surface environment of the present invention;
Figure 14 is mounting means schematic diagram when drilling tool proving installation uses under lunar surface environment of the present invention.
In figure:
1-conducting slip ring 2-drilling tool optical axis 3-optical axis joint
4-sealing adaptor 5-pigtail splice 6-sensor of composite forces
7-sensor connector 8-drill pipe sub 9-drilling rod
10-drill bit 11-thermocouple temperature sensor 12-aviation plug
13-optical axis O-ring seal 14-the installation of TC frock
101-slip-ring rotor 102-slip ring stator 103-shift fork
104-noble metal 301-annular projection
401-circular groove 402-annular groove 403-round boss A
404-aviation plug mounting hole 501-detent 502-cable hole A
503-cylindrical projection A504-threaded hole A601-center pit
602-through hole A603-through hole B701-cylindrical projection B
702-through hole C704-round boss B801-threaded hole B
802-recessed step 803-cable hole B10a-drill bit hole wall
10b-cutting edge 10c-thermocouple mounting hole 10d-crossed beam trunking
14a-the installation of TC groove
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Drilling tool proving installation under lunar surface environment of the present invention, comprise conducting slip ring 1, drilling tool optical axis 2, optical axis joint 3, sealing adaptor 4, pigtail splice 5, sensor of composite forces 6, sensor connector 7, drill pipe sub 8, drilling rod 9, drill bit 10, thermocouple temperature sensor 11 and aviation plug 12, as shown in Figure 1 and Figure 2.
Described conducting slip ring 1 coaxial sleeve is connected on drilling tool optical axis 2, is positioned at the top of drilling tool optical axis 2.Conducting slip ring 1 is existing product, has slip-ring rotor 101, slip ring stator 102, shift fork 103 and inside and outside two-layer tubular noble metal 104.Wherein, slip-ring rotor 101 coaxial sleeve, in slip ring stator 102, can rotate relative to slip ring stator 102.Be nested between slip-ring rotor 101 and drilling tool optical axis 2, bottom and drilling tool optical axis 2 circumference are fixed.Slip ring stator 102 top position is provided with U-shaped shift fork 103, and the opening of shift fork 103 coordinates with the pivot pin be fixed in frame, makes pivot pin penetrate the opening of shift fork 103, realizes the circumference location of slip ring stator 102.Inside and outside two-layer noble metal 104 is between slip-ring rotor 101 and slip ring stator 102; Internal layer noble metal 104 is fixed on slip-ring rotor 101 outer wall; Internal layer noble metal 104 is fixed on slip ring stator 102 inwall; By inside and outside two-layer noble metal make slip-ring rotor 101 with can keep good in slip-ring rotor 102 relative rotational motion always and contact (contact resistance is m Ω rank), make the signal wire of thermocouple temperature sensor 11 be in conducting state, and the signal wire avoiding thermocouple temperature sensor 11 in drilling tool optical axis 2 rotation process is wrapped in drilling tool optical axis 2 outside surface always.
Described drilling tool optical axis 2 is tubular shaft, appearance finishing, smooth, can coordinate with magnetic fluid, and for motive seal, inner space can be passed through for signal cable, and in drilling tool, each sensor signal transfers to drilling tool outside by signal cable.Drilling tool optical axis 2 bottom is coaxially connected successively with optical axis joint 3, sealing adaptor 4, pigtail splice 5, sensor of composite forces 6, sensor connector 7, drill pipe sub 8.Wherein, docked by left-hand thread between optical axis joint 3 with drilling tool optical axis 2 bottom, can effectively prevent from loosening, the right alignment of both guarantees and the reliability of transmission process, stability.Pigtail splice 5, to be docked by fastening bolt between sealing adaptor 4 with optical axis joint 3.Docked by fastening bolt between sensor of composite forces 6 with pigtail splice 5, sensor of composite forces 6 has drilling rod 9 pressure survey and torque measurement function, to be used in drilling rod 9 drilling process measuring in real time pressure and moment of torsion that drilling rod 9 receives; The signal wire of sensor of composite forces is by being drawn by conducting slip ring after optical axis.Drill pipe sub 8, to be docked by fastening bolt between sensor connector 7 with sensor of composite forces 6.Drilling rod 9 end is connected by left-hand thread with between drill pipe sub 8; Drilling rod 9 creeps into end and connects drill bit 10 by left-hand thread, can effectively prevent from loosening, and ensures the reliability and stability of transmission.
As shown in Figure 3, Figure 4, optical axis joint 3 in the present invention, achieve a butt joint in the following way between sealing adaptor 4 and pigtail splice 5: on sealing adaptor 4 upper surface, coaxial design has circular groove 401, has annular groove 402 in circular groove 401 periphery design; Optical axis O-ring seal 13 is pressed into annular groove 402.Optical axis joint 3 is tubular joint, and on lower surface, coaxial design has annular protrusion 301.Make annular projection 301 coordinate with circular groove 401 circumference during assembling, and the end face of annular projection 301 is contacted with circular groove 401 bottom surface; Meanwhile, optical axis joint 3 lower surface contacts with sealing adaptor 4 upper surface, is sealed by annular groove 402, and be pressed in annular groove 402 by optical axis O-ring seal 13 by optical axis joint 3 lower surface.
Sealing adaptor 4 lower surface coaxial design has round boss A403; Pigtail splice 5 upper surface inner ring coaxial design has detent 501.Make round boss A403 coordinate with detent 501 circumference during assembling, and round boss A403 end face is contacted with detent 501 bottom surface; Meanwhile, sealing adaptor 4 lower surface contacts with pigtail splice 5 upper surface, effectively can ensure the right alignment of sealing adaptor 4 and pigtail splice 5.The upper correspondence position of optical axis joint 3, sealing adaptor 4, pigtail splice 5 circumference is evenly equipped with flange perforate; Fastening bolt, through optical axis joint 3, sealing adaptor 4 and the flange perforate on pigtail splice 5, realizes optical axis joint 3, butt-joint locking between sealing adaptor 4 and pigtail splice 5.Optical axis joint 3, right alignment between sealing adaptor 4 and pigtail splice 5 is effectively ensured by said structure.Above-mentioned sealing adaptor 4 center is designed with aviation plug mounting hole 404, and inside is provided with aviation plug 12; Aviation plug 12, for the Signal transmissions of vacuum chamber to antivacuum room, effectively can ensure the sealing of vacuum chamber and the reliability of Signal transmissions.Pigtail splice 5 inside has cable tray, and cable tray is communicated with pigtail splice 5 upper surface, and pigtail splice 5 sidewall has the cable hole A502 be communicated with cable tray; For the signal wire cabling of thermocouple temperature sensor 11.
As shown in Figure 5, achieve a butt joint in the following way between sensor of composite forces 6 and pigtail splice 5 in the present invention: pigtail splice 5 lower surface coaxial design has cylindrical projection A503; On the lower surface of pigtail splice 5, be positioned at the peripheral circumferential uniform threaded hole A504 of cylindrical projection A503; Sensor of composite forces 6 circumference goes up and threaded hole A504 correspondence position is designed with through hole A602; Make cylindrical projection A503 coordinate grafting with the center pit 601 of sensor of composite forces 6 during assembling, and fitted in pigtail splice 5 lower surface and sensor of composite forces 6 upper surface, ensure the right alignment of pigtail splice 5 and sensor of composite forces 6.Fixed with threaded hole A504 screwed tight through after through hole A602 by fastening bolt subsequently, sensor of composite forces 6 and pigtail splice 5 are locked.
As shown in Figure 6, Figure 7, drill pipe sub 8 in the present invention, to achieve a butt joint in the following way between sensor connector 7 and sensor of composite forces 6: upper surface, sensor connector 7 center coaxial design has cylindrical projection B701; Sensor of composite forces 6 periphery is evenly equipped with through hole B603, and the peripheral correspondence position circumference of sensor connector 7 is evenly equipped with through hole C702; The peripheral correspondence position circumference of drill pipe sub 8 is evenly equipped with threaded hole B801.There is round boss B704 the lower surface of sensor connector 7, and drill pipe sub 8 upper surface has recessed step 802.During assembling, make center pit 601 grafting of cylindrical projection B701 and sensor of composite forces 6, and fitted in the lower surface of drill pipe sub 8 upper surface and sensor of composite forces 6.Round boss B701 in sensor connector 7 coordinates with recessed step 802 circumference in drill pipe sub 8, and round boss B701 end face is contacted with recessed step 802 bottom surface; Meanwhile, sensor connector 7 lower surface is made to contact with drill pipe sub 8 upper surface; Passed through hole B603, the through hole C702 in sensor of composite forces 6 and sensor connector 7 subsequently successively by trip bolt after, fix with the threaded hole B801 screwed tight in drill pipe sub 8, by drill pipe sub 8, lock between sensor connector 7 and sensor of composite forces 6.Above-mentioned drill pipe sub 8 inside has cable tray, and cable tray is communicated with drill pipe sub 8 end face, and drill pipe sub 8 sidewall has the cable hole B803 be communicated with cable tray, for the signal wire cabling of thermocouple temperature sensor 11.
It is even number that described drilling rod 9 inside is provided with n road thermocouple temperature sensor 11, n, for measuring the temperature of drilling rod 9.N road thermocouple temperature sensor 11 is one group between two, and the two-way thermocouple temperature sensor 11 often in group is arranged in the circumferential relative position of drilling rod 9.And n road thermocouple temperature sensor 11 is uniform in drilling rod 9 internal circumferential.Use the method for symmetric configuration can effectively prevent the damage often organizing in thermocouple temperature sensor 11 one from bringing missing measurement, the measured value of one group of two thermocouple temperature sensor is averaged the accuracy that can improve measurement simultaneously.
In said n routes thermocouple temperature sensor 11:
The distance of measuring junction distance drilling rod 9 bottom of the 1st group of thermocouple temperature sensor 11 is L
1=a
1;
The measuring junction distance of measuring junction distance the 1st group of thermocouple temperature sensor 11 of the 2nd group of thermocouple temperature sensor 11 is L
2=a
1;
The measuring junction distance of measuring junction distance the 2nd group of thermocouple temperature sensor 11 of the 3rd group of thermocouple temperature sensor 11 is L
3=2a
1;
The measuring junction distance of measuring junction distance the 3rd group of thermocouple temperature sensor 11 of the 4th group of thermocouple temperature sensor 11 is L
4=2a
1;
By the 5th group, the measuring junction of thermocouple temperature sensor 11 obtains by following formula (1) apart from the measuring junction distance of last group of thermocouple temperature sensor 11:
L
2k+1＝L
2k-1+L
2k-3，(k＝2,3,4,…)(1)
Make the local thermograde that temperature in drilling rod 9 is high large thus, thermocouple temperature sensor 11 layout is intensive, and the local thermograde that temperature is low is little, thermocouple temperature sensor 11 layout density, the effective accuracy ensureing to measure.By above-mentioned thermocouple temperature sensor 11 layout type, the drilling rod 9 of random length can be measured, can according to suitable initial value a
1determine the group number of layout thermocouple temperature sensor 11 on drilling rod 9.
Also be provided with 4 road thermocouple temperature sensors 11 in described drill bit, measuring junction is arranged on 4 point for measuring temperature places on drill bit 10 respectively.4 points for measuring temperature are made to be respectively No. 1 ~ No. 4 points for measuring temperature, the then positions of 4 points for measuring temperature, as shown in Figure 8, for:
No. 1 point for measuring temperature is positioned at drill bit 10 and drilling rod 9 contacting points position, for measuring this position, place, realizes drill bit 10 to the transmission temperature between drilling rod 9.
No. 2 points for measuring temperature are positioned at the boring 10a wall contacting points position creeping into object and drill bit 10, for measuring this position, place, realize the temperature that drill bit 10 transmits to soil.
No. 3 points for measuring temperature are positioned at drill bit 10 outer wall and creep into object contact point position, realize the measurement of the temperature arrising caused by friction situation of drill bit 10 outer wall.
No. 4 points for measuring temperature are positioned at the cutting edge 10b of drill bit 10 and creep into object contact point position, and the temperature rise situation realizing drill bit 10 cutting edge place is measured.
The actual temperature of drill bit 10 in drilling process accurately can be measured by above-mentioned 4 road thermocouple temperature sensors 11.
As shown in Figure 9, the thermocouple mounting hole 10c that the measuring junction of above-mentioned 4 thermocouple temperature sensors 11 penetrates the diameter 1mm offered at point for measuring temperature place is interior and fixing, and hole heat conductive silica gel is filled, and ensures the heat conductance between drill bit 10 and thermocouple temperature sensor 11.No. 1 is passed by drilling rod 9 side-wall hole with the signal wire of No. 4 point for measuring temperature place thermocouple temperature sensors 11, and the annular crossed beam trunking 10d sidewall pasting drilling rod 9 top design leads in drilling rod 9.No. 2 drawn by the annular crossed beam trunking 10d bottom surface of drilling rod 9 top design with the signal wire of No. 3 point for measuring temperature place thermocouple temperature sensors 11 after, paste annular crossed beam trunking 10d sidewall and lead in drilling rod 9.The signal wire of above-mentioned whole n roads thermocouple temperature sensor 11 is after the cable hole B803 in drill pipe sub 8 passes subsequently, is penetrated, connect with the plug end of aviation plug 12 by the cable hole A502 on pigtail splice 5; Aviation plug 12 socket end draws signal wire at the inner cabling of drilling tool optical axis 2, and the wire hole offered by drilling tool optical axis 2 top penetrates slip-ring rotor 101, is weldingly fixed on inner ring noble metal 104 along conducting slip ring 1 radial direction; Outer shroud noble metal 104 respective signal line draws the signal output part as thermocouple temperature sensor 11 through slip ring stator 102.
Because the thermocouple temperature sensor 11 in drilling rod 9 adopts Phosphoric Acid-Copper Oxide high temperature glue to be directly pasted onto on drilling rod 9 inwall, guarantee directly to contact with drilling rod 9; But because drilling rod 9 inner space is narrow, length is oversize, and therefore operating space is little, difficulty is installed.Therefore in the present invention for convenience of the layout of thermocouple temperature sensor 11 of drilling rod 9 inside, the installation of TC frock 14 of a quadrant is adopted to complete, have outer wall vertically at the installation of TC frock 14 outer wall and have the installation of TC groove 14a uniformly, groove depth 0.3mm, as shown in Figure 10.Thermocouple temperature sensor is pasted for convenience of with Phosphoric Acid-Copper Oxide high temperature glue, at outer wall spraying 60um thickness non cohesive gel material Teflon (teflon) of the installation of TC frock 14, thermocouple temperature sensor 11 is facilitated to install being separated of rear thermopair mounting tool 14 and thermocouple temperature sensor 11.When thermocouple temperature sensor 11 is installed, drilling rod 9 circumference is divided into 4 regions, the installation of thermocouple temperature sensor 11 is carried out respectively by the installation of TC frock 14 in each region; When installing, first non cohesive gel material Teflon is smeared at the installation of TC frock 14 outer wall, then thermocouple temperature sensor 11 is arranged in the installation of TC groove 14a, again at thermocouple temperature sensor 11 external application certain thickness Phosphoric Acid-Copper Oxide high temperature glue, by viscosity and the self gravitation of colloid, thermocouple temperature sensor 11 is attached in the installation of TC groove 14a.Subsequently, frock is stretched into along drilling rod 9 center, flush to two ends with drilling rod 9 two ends, then the installation of TC frock 14 is touched drilling rod 9 inwall, as shown in Figure 11,12, and blocked between the installation of TC frock 14 two ends and drilling rod 9 two ends by jig, keep two hours at room temperature, treat resistance to Phosphoric Acid-Copper Oxide high-temp glue water cure, because the installation of TC frock 14 external spray has Teflon material, substantially not with the adhesion of Phosphoric Acid-Copper Oxide high temperature glue, therefore the installation of TC frock 14 can be taken off smoothly.Finally drilling rod 9 merogenesis is stretched into vacuum drying chamber further to solidify.
As described in Figure 13, the Signal transmissions collection of drilling tool proving installation under lunar surface environment of the present invention, realized by Signal transmissions acquisition system, the temperature signal that thermocouple temperature sensor 11 obtains, the pressure of the drill force signal that sensor of composite forces 6 obtains and torque signal transfer to temperature polling instrument 15 respectively by conducting slip ring 1, bore pressure amplifier 16 and torque amplification 17.The host computer 19 that transfers to real-time for temperature information, by the RS485 communication interface be equipped with, carries out showing and storing by temperature polling instrument 15; Bore pressure amplifier 16 and respectively the pressure of the drill force signal and torque signal are inputed to data collecting card 18 with torque amplification 17, the pressure of the drill force signal and torque signal are transferred to host computer 19 by the ethernet communication port be equipped with and carry out real-time display and storage by data collecting card 18.RS485 communication and ethernet communication can transmit distance (being greater than 100m) enough far away, make host computer 19 can have distance enough far away with temperature polling instrument 15 and data collecting card 18, convenient display is placed in the host computer 19 stored and far controls machine room.
When using drilling tool proving installation under lunar surface environment of the present invention, drilling tool optical axis 2 upper end is docked with rig, be placed in magnetic fluid dynamic sealing device, magnetic fluid can realize rotating drilling tool optical axis 2 and the motive seal of upper and lower translation, thus under making lunar surface environment of the present invention, drilling tool proving installation can carry out the test drilling through sampling in airtight thermal vacuum environment.
Claims (10)
1. a drilling tool proving installation under lunar surface environment, is characterized in that: comprise conducting slip ring, drilling tool optical axis, optical axis joint, sealing adaptor, pigtail splice, sensor of composite forces, sensor connector, drill pipe sub, drilling rod, drill bit, thermocouple temperature sensor; Wherein, conducting slip ring coaxial sleeve is connected on drilling tool optical axis; Drilling tool optical axis bottom is coaxially connected successively with optical axis joint, sealing adaptor, pigtail splice, sensor of composite forces, sensor connector, drill pipe sub; Described sensor of composite forces has drilling rod pressure survey and torque measurement function;
Above-mentioned drilling rod internal circumferential is evenly equipped with thermocouple temperature sensor; Drill bit is provided with 4 thermocouple sensors, 4 thermocouple sensors lay respectively at 4 point for measuring temperature places on drill bit, make 4 points for measuring temperature be respectively 1 ~ No. 4 point for measuring temperature, then:
No. 1 point for measuring temperature is positioned at drill bit and drilling rod connecting contact position;
No. 2 points for measuring temperature are positioned at the boring wall contacting points position creeping into object and drill bit;
No. 3 points for measuring temperature are positioned at drill bit outer wall and creep into object contact point position;
No. 4 points for measuring temperature are positioned at the cutting edge of drill bit and creep into object contact point position;
The signal wire of above-mentioned thermocouple temperature sensor and sensor of composite forces is all drawn by conducting slip ring.
2. drilling tool proving installation under a kind of lunar surface environment as claimed in claim 1, it is characterized in that: described optical axis joint, to achieve a butt joint in the following way between sealing adaptor and pigtail splice: on sealing adaptor upper surface, coaxial design has circular groove, has annular groove in circular groove periphery design; Optical axis O-ring seal press-in annular groove; Optical axis joint is tubular joint, and on lower surface, coaxial design has annular protrusion; Make annular projection coordinate with circular groove circumference during assembling, and the end face of annular projection is contacted with circular groove bottom surface; Meanwhile, optical axis joint lower surface contacts with sealing adaptor upper surface, is sealed by annular groove, and be pressed in annular groove by optical axis O-ring seal by optical axis joint lower surface; Sealing adaptor lower surface coaxial design has round boss A; Pigtail splice upper surface inner ring coaxial design has detent; Make round boss A coordinate with detent circumference during assembling, and round boss A end face is contacted with detent bottom surface; Meanwhile, sealing adaptor lower surface contacts with pigtail splice upper surface, effectively can ensure the right alignment of sealing adaptor and pigtail splice.In optical axis joint, sealing adaptor, pigtail splice circumference, correspondence position is evenly equipped with flange perforate; Fastening bolt, through the flange perforate on optical axis joint, sealing adaptor and pigtail splice 5, realizes optical axis joint, butt-joint locking between sealing adaptor and pigtail splice.
3. drilling tool proving installation under a kind of lunar surface environment as claimed in claim 1, is characterized in that: achieve a butt joint in the following way between described sensor of composite forces and pigtail splice: pigtail splice lower surface coaxial design has cylindrical projection A; On the lower surface of pigtail splice, be positioned at the peripheral circumferential uniform threaded hole A of cylindrical projection A; Sensor of composite forces circumference is designed with through hole A with threaded hole A correspondence position; Make cylindrical projection A coordinate grafting with the center pit of sensor of composite forces during assembling, and fitted in pigtail splice lower surface and sensor of composite forces upper surface, ensure the right alignment of pigtail splice and sensor of composite forces.Fixed with threaded hole A screwed tight through after through hole A by fastening bolt subsequently, sensor of composite forces and pigtail splice are locked.
4. drilling tool proving installation under a kind of lunar surface environment as claimed in claim 1, is characterized in that: described drill pipe sub, achieve a butt joint in the following way between sensor connector and sensor of composite forces: upper surface, sensor connector center coaxial design has cylindrical projection B; Sensor of composite forces periphery is evenly equipped with through hole B, and the peripheral correspondence position circumference of sensor connector is evenly equipped with through hole C; The peripheral correspondence position circumference of drill pipe sub is evenly equipped with threaded hole B; There is round boss B the lower surface of sensor connector, and drill pipe sub upper surface has recessed step; During assembling, make the center pit grafting of cylindrical projection B and sensor of composite forces, and fitted in the lower surface of drill pipe sub upper surface and sensor of composite forces; Round boss B in sensor connector coordinates with the recessed step circumference in drill pipe sub, and round boss B end face is contacted with recessed step bottom surface; Meanwhile, sensor connector lower surface is made to contact with drill pipe sub upper surface; Passed through hole B, the through hole C in sensor of composite forces and sensor connector subsequently successively by trip bolt after, fix with the threaded hole B screwed tight in drill pipe sub, by drill pipe sub, lock between sensor connector and sensor of composite forces.
5. drilling tool proving installation under a kind of lunar surface environment as claimed in claim 1, be is characterized in that: docked by left-hand thread between described optical axis joint with drilling tool optical axis bottom; Drilling rod end is connected by left-hand thread with between drill pipe sub; Rod boring end connects drill bit by left-hand thread.
6. drilling tool proving installation under a kind of lunar surface environment as claimed in claim 1, it is characterized in that: the signal wire cabling of described whole thermocouple temperature sensor is behind drilling rod inside, passed by the cable hole B in drill pipe sub, penetrated by the cable hole A on pigtail splice, connect with the plug end of aviation plug in sealing adaptor; The socket end of aviation plug draws signal wire in drilling tool optical axis, by conducting slip ring is drawn after the wire hole offered passes by drilling tool optical axis top.
7. drilling tool proving installation under a kind of lunar surface environment as claimed in claim 1, is characterized in that: the signal wire of sensor of composite forces is by being drawn by conducting slip ring behind drilling tool optical axis inside.
8. drilling tool proving installation under a kind of lunar surface environment as claimed in claim 1, it is characterized in that: described drilling rod internal circumferential is evenly equipped with in thermocouple temperature sensor and is one group between two, the two-way thermocouple temperature sensor often in group is arranged in drilling rod circumference relative position.
9. drilling tool proving installation under a kind of lunar surface environment as claimed in claim 8, is characterized in that: described drilling rod internal circumferential is evenly equipped with in thermocouple temperature sensor:
The distance of the measuring junction distance drilling rod bottom of the 1st group of thermocouple temperature sensor is L
1=a
1;
The measuring junction distance of measuring junction distance the 1st group of thermocouple temperature sensor of the 2nd group of thermocouple temperature sensor is L
2=a
1;
The measuring junction distance of measuring junction distance the 2nd group of thermocouple temperature sensor 11 of the 3rd group of thermocouple temperature sensor is L
3=2a
1;
The measuring junction distance of measuring junction distance the 3rd group of thermocouple temperature sensor 11 of the 4th group of thermocouple temperature sensor is L
4=2a
1;
By the 5th group, the measuring junction of thermocouple temperature sensor obtains by following formula (1) apart from the measuring junction distance of last group of thermocouple temperature sensor:
L
2k+1＝L
2k-1+L
2k-3，(k＝2,3,4,…)(1)
Above-mentioned a
1for the initial value of setting.
10. drilling tool proving installation under a kind of lunar surface environment as claimed in claim 1, is characterized in that: also have Signal transmissions acquisition system, comprises temperature polling instrument, bores pressure amplifier, torque amplification, data collecting card and host computer;
The temperature signal that thermocouple temperature sensor obtains; The pressure of the drill force signal that sensor of composite forces obtains and torque signal transfer to temperature polling instrument respectively by conducting slip ring, bore pressure amplifier and torque amplification; The host computer that transfers to real-time for temperature information carries out showing and storing by temperature polling instrument; The pressure of the drill force signal and torque signal are inputed to data collecting card by brill pressure amplifier and torque amplification respectively, and the pressure of the drill force signal and torque signal are transferred to host computer and carry out real-time display and storage by data collecting card.
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