CN103306622B - Fluid power adding pressure type cord coring drill - Google Patents
Fluid power adding pressure type cord coring drill Download PDFInfo
- Publication number
- CN103306622B CN103306622B CN201310225869.1A CN201310225869A CN103306622B CN 103306622 B CN103306622 B CN 103306622B CN 201310225869 A CN201310225869 A CN 201310225869A CN 103306622 B CN103306622 B CN 103306622B
- Authority
- CN
- China
- Prior art keywords
- ratchet
- valve
- fluid power
- valve disc
- piston core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The present invention is a kind of fluid power adding pressure type cord coring drill, its inner tube assembly comprises ball and hangs fluid power pressing mechanism, described inner tube assembly also comprises the reversal valve for dredging flushing liquor, the bottom of described reversal valve has the chambers of the heart be communicated with one group of liquid outlet of reversal valve, the piston core of described ball suspension fluid power pressing mechanism is the tubular piston core of end sealing, the end of described piston core is positioned at the described chambers of the heart and the described chambers of the heart forms sealing pressing space, and be provided with the STH for entering scouring media in the described piston core end putting in the reversal valve chambers of the heart, liquid outlet is corresponding with the STH of described piston core arranges for another group of described reversal valve.Inventive piston core end sealing, establishes STH in the end putting in the reversal valve chambers of the heart, scouring media promotion piston core is come downwards to when piston core STH enters in piston bush and just can form sealing water blockoff pressurization space, without the need to pitching, solve the problem of pitching.
Description
Technical field
The present invention relates to a kind of bad ground coring tool, especially a kind of fluid power adding pressure type cord coring drill.
Background technology
The sharply minimizing of the superficial part Mineral Resource do not verified along with domestic economy comparatively developed regions, for ensureing that mineral resources exploitation continues to keep fast-developing, geological core drilling is while the great strategy of response " merit is looked for blind deeply ", and superficial part bad ground core drilling has also laid out the position be more and more taken seriously.Superficial part complex stratigraphic drilling always serious with hole wall collapse, caving in is difficult to ensure the reasons such as card with leakage, the rate pole of coring and is put into " forbidden zone " of drilling operation, seriously hinders carrying out and deeply of geological prospecting work.
Pressure-cliping CORING TECHNOLOGY is a kind of towards CORING TECHNOLOGY that is loose, the bad ground such as cementing properties is poor, easy fragmentation.Be a kind of bad ground CORING TECHNOLOGY of the comparative maturity of China's independent research, but limit due to its structural requirement, only use in oilfield.Pressure-cliping CORING TECHNOLOGY is mainly divided into mechanical pressurization formula CORING TECHNOLOGY and fluid power pressurization CORING TECHNOLOGY, pressure-cliping CORING TECHNOLOGY applies downward pressure by portion on inner pipe at the end of round trip, make the core grabber of many valve structures of interior pipe bottom carry out mechanically deform gathering along engaging bit inner surface slope with it, reach the object closed and core.
Pitching pressure-cliping cord coring drill mainly comprises outer pipe assembly and inner tube assembly.Outer pipe assembly comprises the landing nipple, centralizer, outer tube, reamer and the bottom spraying type drill bit that connect in turn from top to bottom, and inner tube assembly comprises Lao Mao mechanism, detent mechanism, fluid power pressing mechanism, single action mechanism, interior pipe and core grabber.Wherein fluid power pressing mechanism comprises piston core, piston bush and piston urceolus, piston urceolus upper bottom portion has relief hole, piston core is the tubulose of both ends open, between piston core and piston bush, there is suspension arrangement, suspension arrangement pins when normal circulation is crept into, unlock when pressurization is cored, to make under the pressure effect of airtight water blockoff pressurization space driven plunger core and piston bush is descending in the lump cores.During use, under fluid power pressurized coring drilling tool is connected to drilling rod, by drilling rod for drilling tool provides flushing liquor.
In the course of work of this drilling tool, flushing liquor carries out twice circulation, and first time, circulation was for normally to creep into circulation, and second time circulation provides pressure for fluid power pressing mechanism, cores.Specifically such: in work progress, throw in inner tube assembly, open slush pump (mud is as flushing liquor), flushing liquor first time circulation, flushing liquor enters the piston core of fluid power pressing mechanism, flow into carry out normal circulation in scouring media circulation canal (annular gap of inner tube assembly and outer pipe assembly) and creep into after piston core; After normal circulation creeps into end, pump closes; Steel ball is dropped at well head, secondary turn on pump, treat that steel ball drop is to precalculated position (blocking the upper end open of piston core), confining liquid circulation road (forming this confining liquid circulation road between piston core top and outer tube), form piston mechanism to carry out suppressing the pressurization of (blocking up) water, for fluid power pressing mechanism provides pressure to shrink to make core grabber, reach the object coring and protect rock core; When flushing liquor arrives the discharge orifice of piston urceolus, liquid stream flows out from discharge orifice, and round trip creeps into end.
This structure enters into scouring media circulation canal owing to needing flushing liquor when normal circulation is crept into through fluid power pressing mechanism, therefore the piston core of scouring media circulation canal is generally designed to upper end open (being convenient to flushing liquor enter), but this cores for flushing liquor secondary cycle and brings trouble, because need to be formed at piston core top an airtight water blockoff pressurization space during secondary cycle thus promote that fluid power pressing mechanism is descending cores, the way of prior art drops into steel ball as above-mentioned at well head, and pitching technique process is loaded down with trivial details, auxiliary duration, automaticity is low, hidden danger is brought to wellbore stability.
In view of this, special proposition the present invention.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provides a kind of fluid power adding pressure type cord coring drill not needing pitching just can form closed water blockoff pressurization space after normal circulation creeps into end.
For solving the problems of the technologies described above, the present invention adopts the basic conception of technical scheme to be:
A kind of fluid power adding pressure type cord coring drill, its inner tube assembly comprises ball and hangs fluid power pressing mechanism, described inner tube assembly also comprises the reversal valve for dredging flushing liquor, the bottom of described reversal valve has the chambers of the heart be communicated with one group of liquid outlet of reversal valve, the piston core of described ball suspension fluid power pressing mechanism is the tubular piston core of end sealing, the end of described piston core is positioned at the described chambers of the heart and the described chambers of the heart forms sealing pressing space, and be provided with the STH for entering scouring media in the described piston core end putting in the reversal valve chambers of the heart, liquid outlet is corresponding with the STH of described piston core arranges for another group of described reversal valve.
Further, described inner tube assembly also comprises single action mechanism, and the piston bush that described ball hangs fluid power pressing mechanism is connected with described single action mechanism, and the sidewall of described piston bush is provided with the drain hole for providing circulation to creep into scouring media.
As a kind of preferred version, described reversal valve is have one for entering the control medium path of scouring media and the pilot operated directional control valve for two groups of working media paths exporting scouring media, along with repeatedly injecting scouring media, described pilot operated directional control valve makes described control medium path and different working media communication, thus make from washing lotion from different liquid outlets export, and control liquid pressure release time spool on horizontal reset.
As a kind of preferred version, described pilot operated directional control valve comprises valve body and spool;
Have in described valve body: described control medium path; Described two groups of working media paths; Described spool is positioned at the axis hole of described valve body, and poppet head is equipped with a valve and blocks up, and described valve is stifled forms with control medium path sap cavity of exerting pressure, thus it is descending to promote described valve disc; One flexible drive mechanism, described flexible drive mechanism is connected to described valve and blocks up between valve disc, descending for promoting described valve disc when injecting control medium; One valve disc with centre bore, be provided with commutation via at described centre bore periphery, valve disc is set on the spool between working media path and control medium path; One energy storage resetting-mechanism, the energy storage when injecting control medium, release during pressure release scouring media can thus to promote described spool up; And a changement, repeatedly inject scouring media, described changement make described control medium path and different working media communication and when controlling liquid pressure release horizontal reset on spool.
As a kind of preferred version, described changement is: comprise be arranged in described valve body, the valve pocket be sleeved on outside described spool, first set ratch mechanism is housed between described valve disc and valve pocket, the second cover ratch mechanism is housed between described valve disc and spool;
When injecting control medium, valve disc and valve pocket are engaged by first set ratch mechanism, drive described valve disc to rotate forward, thus described control medium path and working media path are connected; During scouring media pressure release, valve disc and spool, by the second cover ratch mechanism occlusion, drive horizontal reset on described spool.
As a kind of preferred version, the bottom part ring of described valve disc is provided with the axially downward annular ratchets of a circle around described centre bore, valve pocket is the ratchet cover that inner circumferential surface is provided with the axial upwards annular ratchets of a circle, and the ratchet of described valve disc and ratchet cover forms first set ratch mechanism; Described spool is the ratchet axle being provided with the axial upwards annular ratchets of a circle on its outer peripheral face, and the ratchet of described valve disc and the ratchet of described ratchet axle form described second cover ratch mechanism; Described ratchet cover is connected with described valve body circumference, axial location, and described ratchet axle is located relative to ratchet cover circumference, is in axial sliding connection; The ratchet of wherein said valve disc, ratchet axle and ratchet cover three is all chisel teeths, and the key groove of three is equal, lozenges intercouples, and the ratcheted ramp of ratchet axle and ratchet cover is at homonymy.
As a kind of preferred version, described ratchet axle and ratchet cover are by axial splines and spline nested encryptions.
As a kind of preferred version, the ratchet of described ratchet axle is formed in the key end of described ratchet axle, and the ratchet of described ratchet cover is formed in the key end of described ratchet cover.
As a kind of preferred version, by being located at the ratchet cover cross projection of upper lip and the groove of valve body port is located by connecting between described ratchet cover with valve body.
As a kind of preferred version, described energy storage resetting-mechanism is the back-moving spring in ratchet cover, and described back-moving spring is set on described ratchet axle, and its one end and ratchet axle are fixed, and the other end connects plugging part.
After adopting technique scheme, the present invention compared with prior art has following beneficial effect:
Fluid power adding pressure type cord coring drill of the present invention due to piston core be end sealing, only establish STH in the end putting in the reversal valve chambers of the heart, sealing water blockoff pressurization space just can be formed so come downwards to when piston core STH enters in piston bush at scouring media promotion piston core, thus without the need to pitching, the operation solving pitching is loaded down with trivial details, auxiliary duration, automaticity is low, brings the problem of hidden danger to wellbore stability.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the integrated machine composition of fluid power adding pressure type cord coring drill of the present invention;
Fig. 2 is the sectional view that pilot operated directional control valve of the present invention and ball hang fluid power pressing mechanism coupling part;
Fig. 3 is the outside drawing of pilot operated directional control valve;
Fig. 4 is that pilot operated directional control valve valve blocks up joint design schematic diagram;
Fig. 5 is pilot operated directional control valve valve seat construction schematic diagram;
Fig. 6 is pilot operated directional control valve ratchet nested structure schematic diagram;
Fig. 7 is pilot operated directional control valve ratchet axle construction schematic diagram;
Fig. 8 is pilot operated directional control valve valve disc structural representation;
Fig. 9 is that pilot operated directional control valve valve disc and ratchet axle, ratchet cover are engaged the procedure chart realizing valve disc and rotate mutually.
Figure 10 is that ball hangs fluid power pressing mechanism piston outer tube structure schematic diagram;
Figure 11 is the structural representation that ball hangs fluid power pressing mechanism piston bush;
Figure 12 is the explosive view that ball hangs fluid power pressing mechanism.
In figure:
Hinge type drags for spearhead mechanism, and------3 ' ball hangs fluid power pressing mechanism, and----6 ' core grabber--7 '--is managed in 5 ' to 2 ' pilot operated directional control valve to 1 ' bullet card detent mechanism by 4 ' single action mechanism
Liquid controlled reversing valve portion:
Valve blocks up joint--60 valve seat--80
Valve blocks up joint: inlet--600 liquid storage cylinder-602, feed pathway-601;
Valve disc--110 valve discs: commutation via-1102, annular ratchets-1101, centre bore-1100;
Valve blocks up--241 stage clip-243, spring bearer plate-242
Valve seat: centre bore--the curved passage in straight channel-805, groove 803 chambers of the heart-30 of 800 ports--806 ratchet axles--cross projection--802 back-moving springs--25 regulate pressing plate--81 of the right side ratchet 901b ratchet cover upper lip of the left side ratchet 901a ratchet cover of the ratchet-901 ratchet cover of the ratchet-1001 ratchet cover of 100 ratchet axles
Ball hangs fluid power pressing mechanism part:
Piston core--20 annular groove--inlet opening-201 of 200 piston cores
Piston bush--spring-212, drain hole-211, four radial circular hole-210 piston urceolus--22 locking ball--23 in the middle part of 21 piston bushs
Detailed description of the invention
With reference to Fig. 1, the present invention is a kind of fluid power adding pressure type cord coring drill, comprises outer pipe assembly and inner tube assembly.
Wherein, inner tube assembly comprises hinge type and drags for spearhead mechanism 1 ', bullet card detent mechanism 2 ', for dredging the reversal valve (pilot operated directional control valve 3 ' hereafter will told about) of flushing liquor, ball hangs fluid power pressing mechanism 4 ', single action mechanism 5 ', interior pipe 6 ' and core grabber 7 ', the bottom of described reversal valve has the chambers of the heart be communicated with one group of liquid outlet of reversal valve, the piston core of described ball suspension fluid power pressing mechanism 4 ' is the tubular piston core of end sealing, the end of described piston core is positioned at the described chambers of the heart and the described chambers of the heart forms sealing pressing space, and be provided with the STH for entering scouring media in the described piston core end putting in the reversal valve chambers of the heart, liquid outlet is corresponding with the STH of described piston core arranges for another group of described reversal valve.
During use, this fluid power adding pressure type cord coring drill is connected to bottom drilling rod, slush pump by drilling rod for fluid power adding pressure type cord coring drill provides flushing liquor.In work progress, throw in inner tube assembly, flushing liquor exports as the working solution of reversal valve.In work progress, throw in inner tube assembly, open slush pump, flushing liquor first time circulation, now, opens the working media path of one group of reversal valve, one group of liquid outlet of reversal valve is communicated with piston core STH, flushing liquor enters piston core by reversal valve, and the scouring media circulation canal (annular gap of inner tube assembly and outer pipe assembly) being flowed into fluid power adding pressure type cord coring drill by piston core normally creeps into circulation, carries out circulation and creeps into; After normal circulation creeps into end, slush pump closes; Secondary turn on pump, reversal valve is commutated, open another group working media path, another group liquid outlet of reversal valve is communicated with the reversal valve chambers of the heart, guides flushing liquor to enter in the chambers of the heart of reversal valve, promotes piston core descending, when piston core is descending, its STH enters in piston bush, thus make piston core top form sealing water blockoff pressurization space, for piston core provides descending driving force, core.When piston bush arrives the discharge orifice of piston urceolus, liquid stream flows out from discharge orifice, and round trip creeps into end.Because piston core top is sealing, only there is STH, so after piston core enters piston bush, just a sealing water blockoff pressurization space is formed at piston core top, and realize the pressurization of sealing water blockoff without the need to pitching, thus it is loaded down with trivial details to solve the operation that pitching technique brings, auxiliary duration, automaticity is low, brings the problem of hidden danger to wellbore stability.
The piston bush that described ball hangs fluid power pressing mechanism is connected with described single action mechanism, and the sidewall of described piston bush is provided with the drain hole for providing circulation to creep into scouring media.The scouring media entering piston core is flowed out by the drain hole of piston bush and enters scouring media circulation canal and carry out normal circulation and creep into.The piston bush of this programme is directly connected with single action mechanism, makes the annexation herein of fluid power adding pressure type cord coring drill simple.
As a kind of preferred version, described reversal valve is have one for entering the control medium path of scouring media and the pilot operated directional control valve for two groups of working media paths exporting scouring media, along with repeatedly injecting scouring media, described pilot operated directional control valve makes described control medium path and different working media communication, thus make from washing lotion from different liquid outlets export, and control liquid pressure release time spool on horizontal reset.
The pilot operated directional control valve of this programme is using the control medium of flushing liquor as pilot operated directional control valve, and export control medium, i.e. flushing liquor, be convenient to like this pilot operated directional control valve directly be repeatedly kicked into fluid power adding pressure type cord coring drill, turn on pump note flushing liquor just can realize different flushing liquor circulations, makes device overall structure simple.
Below by a specific embodiment, the present invention is described.
As shown in Figure 3, a kind of structure of pilot operated directional control valve is provided.Pilot operated directional control valve comprises the valve be threaded and blocks up joint 60 and valve seat 80 two parts, and described valve blocks up joint 60 and is threaded connection in valve seat 80 upper end.Split type structure is easy for removal and installation.Also can be one.As shown in Figure 1, described valve blocks up joint 60 and is connected with bullet card holder 10 end thread of bullet card detent mechanism.Described valve seat 80 is threaded connection and blocks up joint 60 bottom in valve.
As shown in Figure 2 and Figure 4, valve blocks up the control medium path having bigbore inlet 600, small-bore feed pathway 601 and heavy caliber liquid storage cylinder 602 form by joint 60.Due to each pump of fluid power adding pressure type cord coring drill, to open required flushing medium flow larger, in order to smooth and easy supply, pump amount should be ensured, but in order to form certain pressure and and the valve of spool block up the airtight sap cavity of exerting pressure of formation, feed pathway needs should be smaller, after spool downlink working medium channel is communicated with, spool should be in a pressure balance and less state, therefore below feed pathway, configures the larger liquid storage cylinder of a bore again.Therefore formation said structure.
As shown in Figure 2 and Figure 7, one boss is arranged at ratchet axle 100 top, thin nut 240 is connected with ratchet axle 100 by screw thread, valve stifled 241 is pressed in described ratchet axle 100 boss top with spring bearer plate 242 by described thin nut, stage clip 243 is set on the ratchet axle 100 between spring bearer plate 242 and valve disc 110, it is descending and up that stage clip can make valve disc 110 stablize, to realize the smooth rotation of valve disc 110 and to be conducive to keeping valve disc 110 to balance.
As shown in Figure 2 and Figure 5, described valve seat 80 is the hollow cylinders with axial uniform six working media paths, ratchet axle 100 is in the centre bore 800 of valve seat 80, head is equipped with a valve stifled 241, when not injecting scouring media, the head of ratchet axle 100 is positioned at the feed pathway 601 that valve blocks up joint 60, and valve stifled 241 and described feed pathway 601 form sap cavity of exerting pressure.
As shown in Figure 2 and Figure 6, ratchet cover 90 is constrained in valve seat 80 centre bore 800, and the groove 803 by being located at cross projection 802 and valve seat port that ratchet overlaps 90 upper lip between valve seat 80 is located by connecting.
As shown in Fig. 2, Fig. 6 and Fig. 7, ratchet axle 100 makes ratchet axle 100 slide axially by the axial splines 1000 of its underpart with the mutually nested constraint of axial splines groove that described ratchet overlaps in 90 can not to rotate in a circumferential direction.
Refer again to Fig. 2, bottom described liquid storage cylinder 602, have a valve disc 110.As shown in Figure 8, valve disc 110 there is a centre bore 1100, the axially downward annular ratchets 1101 of a circle is provided with around described centre bore 1100 in the bottom part ring of described valve disc, in the structure of uniform 3 the commutation vias 1102 of described centre bore 1100 periphery, described valve disc centre bore 1100 is connected on ratchet axle 100, is positioned at described ratchet axle 100 ratchet face top.Between valve seat 80 and valve disc 110, have a sealing mat, another effect of stage clip 243 is: when flushing liquor circulation time, the energy of storage is mainly used in the sealing between valve disc 110 and valve seat 80 by stage clip 243.
Refer again to Fig. 6 and Fig. 7, form the ratchet of ratchet axle in the key end of described ratchet axle, form the ratchet of ratchet cover in the key end that described ratchet overlaps, quantity is all 6, is respectively 1001 and 901.The ratchet key groove of valve disc 110 and ratchet axle 100, ratchet cover 90 is equal, lozenges intercouples, and the inclined-plane of the ratchet chisel teeth of ratchet axle 100 and ratchet cover 90 is at homonymy.
The ratchet 1101 of described valve disc 110 is continuous ratchet, therefore the angle of corresponding 60 degree of each tooth.The width of key of ratchet axle 100 or ratchet cover 90 is respectively the half of valve disc 110 ratchet, and the ratchet overall length of overall length and valve disc 110 is suitable.The chamfer length of the ratchet of valve disc 110 is also 2 times of the chamfer length of ratchet axle 100 and ratchet cover 90.
Refer again to Fig. 2, have a back-moving spring 25 in ratchet cover 90, described back-moving spring 25 is set on described ratchet axle 100, and its one end and described ratchet axle 100 are fixed, and the other end is fixed on valve seat 80 center by regulating pressing plate 81 restriction.Described back-moving spring is energy storage resetting-mechanism.
With reference to Fig. 9, be mutually be engaged for the ratchet of a ratchet of the valve disc of valve disc ratchet and ratchet cover, ratchet axle the process realizing valve disc and rotate:
1, non-turn on pump, does not have scouring media, and the tip on a ratchet 1101a inclined-plane of valve disc 110 is at the tip place on the ratchet 901a inclined-plane, left side that ratchet overlaps.
2, turn on pump, inject scouring media, ratchet axle 100 is descending, valve disc 110 is descending, the left side ratchet 901a of the ratchet 1101a of valve disc and ratchet cover is engaged, and along with valve disc 110 constantly descending along ratchet cover ratchet 901a inclined-plane, left side descending, a half on ratchet 901a inclined-plane on the left of ratchet cover is passed by the ratchet 1101a tip of valve disc 110, now valve disc 110 turns over 30 degree, the commutation via 1102 of valve disc 110 is communicated with 1#, 2#, 3# working media path entrance, the flowing of liquid makes valve disc 110 stress balance, and valve disc 110 no longer rotates.
3, scouring media pressure release (ball hangs the place's pressure release of fluid power pressing mechanism), close pump, ratchet axle 100 is up under the effect of back-moving spring.Ratchet axle resets, and the top of ratchet cover 90 and the ratchet occlusion of valve disc 110 are crossed in the top of ratchet axle, now the tip of the ratchet 1001a of ratchet axle is positioned at the tip place on valve disc ratchet 1101a inclined-plane, push valve disc 110 to continue to rotate 30 degree according to identical direction in above-mentioned 2, valve blocks up and again enters valve and block up in the feed pathway of joint, and pilot operated directional control valve is closed.Since then, valve disc 110 rotates 60 degree.Now the ratchet of valve disc 110 more repeats 1-3 step to the right side ratchet 901b that lower ratchet overlaps, is communicated with next group valve seat 80 hole, i.e. 4#, 5# and 6# working media path entrance and then realization commutation.
With reference to Fig. 2, Figure 10, Figure 11 and Figure 12, described ball hangs fluid power pressing mechanism and comprises piston core 20, piston bush 21, piston urceolus 22 and locking ball 23; Described piston core 20 is one with the tubular piston core of the end sealing of annular groove 200, piston core 20 is arranged in piston bush 21 centre bore, described pilot operated directional control valve body base has the chambers of the heart 30 of one and one group of working media communication, described piston core 20 end stretches out in the chambers of the heart 30 of described liquid controlled reversing valve base 80, is provided with the STH 201 for one group of working media communication with described pilot operated directional control valve in piston core 20 end; With four radial circular holes 210 in the middle part of described piston bush 21, bottom is with drain hole 211, and lower end is the long tube body with regulating screw thread; Described locking ball 23 is positioned at the radial circular hole 210 of described piston bush 21, can move along this circular radial axially bored line, it is long that the diameter of locking ball 23 is greater than described radial circular hole 210 hole, spring 212 and the spring bearer plate be threaded with piston bush 21 of the described piston core of a support is had, between the inner convex platform that described spring 212 is enclosed within the bottom of piston core 20 and spring bearer plate bottom piston bush 21; Piston core and piston bush block thus the relative position of limited piston core and piston bush by the boss on both, and piston bush outer wall is also provided with outer lug boss, to block with piston urceolus base thus to prevent piston bush from deviating from from piston urceolus.Described piston urceolus 22 is enclosed within outside piston bush 21, and have an annular groove 220 in piston urceolus 22 inwall central upper, locate for locking ball 23, there are four discharge orifices 221 middle and lower part, and an inner convex platform is arranged at bottom.
The operating principle of this fluid power adding pressure type cord coring drill is: during construction, is connected by slush pump with the control medium path entrance of pilot operated directional control valve.Open slush pump (when mud is as scouring media), mud first time circulation, the curved passage 806 of valve disc blocking valve seat 80 opens straight channel 805, the STH 201 that liquid flows through described ball suspension fluid power pressing mechanism piston core 20 flows into piston core 20 inside, enter scouring media circulation canal again, carry out normal circulation and creep into, normal circulation creeps into end, and slush pump closes, and energy storage resetting-mechanism drives spool up, and valve disc is communicated with along Spool rotating closing control medium channel and working media path, secondary turn on pump, valve disc descending blocking straight channel 805 opens curved passage 806, liquid flows to into valve seat 80 chambers of the heart 30, compression piston core 20 is descending, locking ball 23 moves along piston core 20 cannelure to drilling tool axle center, ball hangs and unlocks, high pressure liquid stream compression piston core 20 drives together with inner tube assembly lower mechanisms descending with piston bush 21, in descending process, the STH 201 of piston core 20 enters piston bush 21, thus sealing water blockoff pressurization space is formed at piston core top, driving core grabber draws in, when piston bush 21 comes downwards to piston urceolus 22 discharge orifice 221, liquid stream flows out from discharge orifice 221, round trip creeps into end.
By above-mentioned introduce known, the present invention exactly when ratchet axle 100 is descending valve disc 110 and ratchet cover 90 to be engaged by first set ratch mechanism, first set ratch mechanism makes valve disc 110 rotate an angle thus the commutation via 1102 of valve disc 110 is communicated with at least one working media path entrance, when ratchet axle 100 is up, valve disc 110 and ratchet axle 100 are by the second cover ratch mechanism occlusion, second cover ratch mechanism makes valve disc 110 again rotate an angle thus the commutation via of valve disc 110 and all working medium channel entrance is staggered to realize the closedown of working media path.
Described commutation via, valve disc 110 ratchet, ratchet axle 100 ratchet and ratchet overlap 90 ratchets quantity and arrange according to circumstances specifically set.
A kind of ratch mechanism is described in detail in above-described embodiment; in fact; as long as other forms of ratch mechanism its can realize pilot operated directional control valve inject control medium time; described changement makes valve disc rotate thus control medium path and working media path is connected; during pressure release scouring media, described changement makes valve disc rotate thus makes the function of control medium path and the disconnection of working media path all in protection scope of the present invention.
It is all disks that the present invention respectively schemes shown valve disc 110, can also be sector disk etc.
Pilot operated directional control valve of the present invention is a kind of pilot operated directional control valve by controlling liquid output, is moved axially thus is with the different liquid inlet of movable valve plug upper plug head shutoff and outlet to realize the valve pilot operated directional control valve commutated, also have the following advantages with general by spool:
1, scouring media not only also exports as working solution as controlling liquid, compares without the need to independent control liquid, save the energy with the distinct common pilot operated directional control valve of existing control liquid and working solution;
2, control without the need to positive confinement between liquid path and working solution path, low to technological requirement;
3, control liquid path without the need to returning path, structure is simple.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a fluid power adding pressure type cord coring drill, its inner tube assembly comprises ball and hangs fluid power pressing mechanism, it is characterized in that: described inner tube assembly also comprises the reversal valve for dredging flushing liquor, the bottom of described reversal valve has the chambers of the heart be communicated with one group of liquid outlet of reversal valve, the piston core of described ball suspension fluid power pressing mechanism is the tubular piston core of end sealing, the end of described piston core is positioned at the described chambers of the heart and the described chambers of the heart forms sealing pressing space, and be provided with the STH for entering scouring media in the described piston core end putting in the reversal valve chambers of the heart, liquid outlet is corresponding with the STH of described piston core arranges for another group of described reversal valve.
2. fluid power adding pressure type cord coring drill according to claim 1, it is characterized in that: described inner tube assembly also comprises single action mechanism, the piston bush that described ball hangs fluid power pressing mechanism is connected with described single action mechanism, and the sidewall of described piston bush is provided with the drain hole for providing circulation to creep into scouring media.
3. fluid power adding pressure type cord coring drill according to claim 1 and 2, it is characterized in that: described reversal valve is have one for entering the control medium path of scouring media and the pilot operated directional control valve for two groups of working media paths exporting scouring media, along with repeatedly injecting scouring media, described pilot operated directional control valve makes described control medium path and different working media communication, thus make flushing liquor from different liquid outlets export, and control liquid pressure release time spool on horizontal reset.
4. fluid power adding pressure type cord coring drill according to claim 3, is characterized in that: described pilot operated directional control valve comprises valve body and spool;
Have in described valve body: described control medium path; Described two groups of working media paths; Described spool is positioned at the axis hole of described valve body, and poppet head is equipped with a valve and blocks up, and described valve is stifled forms with control medium path sap cavity of exerting pressure, thus it is descending to promote valve disc; One flexible drive mechanism, described flexible drive mechanism is connected to described valve and blocks up between valve disc, descending for promoting valve disc when injecting control medium; One valve disc with centre bore, be provided with commutation via at described centre bore periphery, valve disc is set on the spool between working media path and control medium path; One energy storage resetting-mechanism, the energy storage when injecting control medium, release during pressure release scouring media can thus to promote described spool up; And a changement, repeatedly inject scouring media, described changement make described control medium path and different working media communication and when controlling liquid pressure release horizontal reset on spool.
5. fluid power adding pressure type cord coring drill according to claim 4, it is characterized in that: described changement is: comprise be arranged in described valve body, the valve pocket be sleeved on outside described spool, first set ratch mechanism is housed between described valve disc and valve pocket, the second cover ratch mechanism is housed between described valve disc and spool;
When injecting control medium, valve disc and valve pocket are engaged by first set ratch mechanism, drive described valve disc to rotate forward, thus described control medium path and working media path are connected; During scouring media pressure release, valve disc and spool, by the second cover ratch mechanism occlusion, drive horizontal reset on described spool.
6. fluid power adding pressure type cord coring drill according to claim 5, it is characterized in that: the bottom part ring of described valve disc is provided with the axially downward annular ratchets of a circle around described centre bore, valve pocket is the ratchet cover that inner circumferential surface is provided with the axial upwards annular ratchets of a circle, and the ratchet of described valve disc and ratchet cover forms first set ratch mechanism; Described spool is the ratchet axle being provided with the axial upwards annular ratchets of a circle on its outer peripheral face, and the ratchet of described valve disc and the ratchet of described ratchet axle form described second cover ratch mechanism; Described ratchet cover is connected with described valve body circumference, axial location, and described ratchet axle is located relative to ratchet cover circumference, is in axial sliding connection; The ratchet of wherein said valve disc, ratchet axle and ratchet cover three is all chisel teeths, and the key groove of three is equal, lozenges intercouples, and the ratcheted ramp of ratchet axle and ratchet cover is at homonymy.
7. fluid power adding pressure type cord coring drill according to claim 6, is characterized in that: described ratchet axle and ratchet cover are by axial splines and spline nested encryptions.
8. fluid power adding pressure type cord coring drill according to claim 7, is characterized in that: the ratchet of described ratchet axle is formed in the key end of described ratchet axle, and the ratchet of described ratchet cover is formed in the key end of described ratchet cover.
9. fluid power adding pressure type cord coring drill according to claim 6, is characterized in that: by being located at the ratchet cover cross projection of upper lip and the groove of valve body port is located by connecting between described ratchet cover with valve body.
10. fluid power adding pressure type cord coring drill according to claim 6, it is characterized in that: described energy storage resetting-mechanism is the back-moving spring in ratchet cover, described back-moving spring is set on described ratchet axle, and its one end and ratchet axle are fixed, and the other end connects plugging part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310225869.1A CN103306622B (en) | 2013-06-06 | 2013-06-06 | Fluid power adding pressure type cord coring drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310225869.1A CN103306622B (en) | 2013-06-06 | 2013-06-06 | Fluid power adding pressure type cord coring drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103306622A CN103306622A (en) | 2013-09-18 |
| CN103306622B true CN103306622B (en) | 2015-10-14 |
Family
ID=49132299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310225869.1A Expired - Fee Related CN103306622B (en) | 2013-06-06 | 2013-06-06 | Fluid power adding pressure type cord coring drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103306622B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410463B (en) * | 2013-09-01 | 2016-02-10 | 吉林大学 | Deep hole inner pipe puts in place warning cord coring drill |
| CN109025875A (en) * | 2018-08-13 | 2018-12-18 | 中国地质科学院勘探技术研究所 | A kind of built-in steel-ball type hydraulic differential mechanism |
| CN110924887B (en) | 2019-12-03 | 2020-06-30 | 湖南科技大学 | Deep sea submarine drilling rig rope coring and salvaging system and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3504750A (en) * | 1967-03-09 | 1970-04-07 | Wladimir Tiraspolsky | Coring device with controlled releasing |
| SU1677246A1 (en) * | 1989-08-29 | 1991-09-15 | Донецкий политехнический институт | Sampler |
| CN2740767Y (en) * | 2004-08-19 | 2005-11-16 | 李中华 | Pressure coring device |
| CN201606022U (en) * | 2009-12-25 | 2010-10-13 | 大庆石油管理局 | Unconsolidated strata mechanical pressurizing-type closed coring tool |
| CN202914002U (en) * | 2012-10-09 | 2013-05-01 | 中国地质科学院勘探技术研究所 | Ball suspension type core catcher coring drill |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1802077C (en) * | 1990-09-29 | 1993-03-15 | Донецкий политехнический институт | Ejector-type double-core barrel |
| BR112012017961B1 (en) * | 2010-01-20 | 2020-03-17 | Halliburton Energy Services, Inc. | METHOD FOR THE FILTRATION OF DETRITES FROM A WELL FLUID AND WELL TOOL TO FILTER DETRITES FROM A WELL FLUID |
-
2013
- 2013-06-06 CN CN201310225869.1A patent/CN103306622B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3504750A (en) * | 1967-03-09 | 1970-04-07 | Wladimir Tiraspolsky | Coring device with controlled releasing |
| SU1677246A1 (en) * | 1989-08-29 | 1991-09-15 | Донецкий политехнический институт | Sampler |
| CN2740767Y (en) * | 2004-08-19 | 2005-11-16 | 李中华 | Pressure coring device |
| CN201606022U (en) * | 2009-12-25 | 2010-10-13 | 大庆石油管理局 | Unconsolidated strata mechanical pressurizing-type closed coring tool |
| CN202914002U (en) * | 2012-10-09 | 2013-05-01 | 中国地质科学院勘探技术研究所 | Ball suspension type core catcher coring drill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103306622A (en) | 2013-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109236189A (en) | A kind of downhole drill reamer | |
| CN103306622B (en) | Fluid power adding pressure type cord coring drill | |
| CN103306634A (en) | Sliding-sleeve-type downhole blow-out preventer and application thereof | |
| CN101705798B (en) | Vortex sand washing device | |
| CN103899250A (en) | Device for improving oil and gas well drilling speed | |
| CN108360974A (en) | Composite impact tool | |
| CN206554847U (en) | Compound force expansion pipe device | |
| CN102337858A (en) | Tool for grouting in loose coal seam section during drilling | |
| NO339673B1 (en) | Flow controlled downhole tool | |
| CN201513144U (en) | Downhole reverse-circulation sand flusher for horizontal wells | |
| CN202325323U (en) | underground operation tool integrated with sand washing, paraffin scraping, sealing and separating | |
| CN208347680U (en) | composite impact tool | |
| CN106703728A (en) | Reciprocating rotating bidirectional replacement device | |
| CN104100249B (en) | Do not limit the sliding sleeve of bushing of hop count pressure break | |
| CN202170789U (en) | Sliding sleeve adaptor | |
| CN108643854A (en) | A kind of hydraulic telescopic type section milling side drilling tool | |
| CN108150134A (en) | Drilling well boring tool inside blow-out preventer and method | |
| CN203783489U (en) | Flow-controlled hydrodynamic cutting guide shoe | |
| CN106567697B (en) | Blending device | |
| CN109779547B (en) | Downhole liquid flow reversing tool | |
| CN213330989U (en) | Forced local reverse circulation casing and fishing integrated tool | |
| CN204899858U (en) | Radial well plain type recycle valve | |
| CN105239962B (en) | With brill with hydraulic control device under kill-job | |
| CN203769669U (en) | Surge pressure control nipple | |
| CN103307293B (en) | Hydraulic-control reversing valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160719 Address after: 100083 Haidian District, Xueyuan Road, No. 29, Patentee after: China University of Geosciences (Beijing) Address before: 100083 School of engineering and technology, China University of Geosciences, Xueyuan Road 29, Beijing, Haidian District Patentee before: Yang Gansheng |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 Termination date: 20180606 |