DE2023484C

DE2023484C - Hydraulic drilling turbine

Info

Publication number: DE2023484C
Authority: DE
Inventors: Jean Le Vesinet Mothre (Frankreich)
Original assignee: Enterprise de Recherches et dActivites Petrolieres elf, Paris
Publication date: 1972-06-08

Description

1 21 2

Die Erfindung betrifft eine hydraulische Bohrtur- schaufelungsteil führen soll, läßt sich auf einfachsteThe invention relates to a hydraulic Bohrtur- shoveling part to lead, can be very simple

bine mit einem mit dem Gehäuse lösbar und drehfest Weise dadurch schaffen, daß die Leitschaufeln descreate bine with a detachable and non-rotatable manner with the housing in that the guide vanes of the

verbundenen Bohrmeißelkopf, deren Läufer durch die ersten Beschaufelungsteils in einer koaxialen Hülseconnected drill bit head, the rotor of which through the first blading part in a coaxial sleeve

Bohrspülung angetrieben wird, mit dem Bohrwerk- angeordnet sind, die mit dem Oberteil des L.mfersDrilling fluid is driven, are arranged with the boring machine, which is connected to the upper part of the L.mfers

zeug drehfest verbunden und am Ständer durch 5 und dem Oberteil des Gehäuses einen U-förmigenstuff rotatably connected and on the stand by 5 and the upper part of the housing a U-shaped

Axialdrucklager gehalten ist und deren Laufschau- Stromweg bildet.Axial thrust bearing is held and forms their Laufschau- Stromweg.

fein zum Ausgleich des Läuferschubs in zwei Schau- Und der Strömungskanal, der die Bohrspülung vomfine to compensate for the rotor thrust in two show- And the flow channel, which the drilling fluid from

feikränze unterteilt sind, zwischen denen eine Füh- Bohrgestänge zu dem in der axialen Mitte der Tur-feikranze are divided, between which a guide drill rod to the in the axial center of the tur-

rungseinrichtung für die die Kränze in entgegenge- bine befindlichen Eintritt in den ersten Beschaufe-device for the entry into the first loading area opposite the wreaths

setzter Richtung durchströmende Bohrspülung ange- io lungsteil führt, läßt sich — auch dies ist eine höchstdrilling fluid flowing through in a set direction can be - this is also a great deal

bracht ist. einfache Bauform — dadurch bilden, daß der Läuferis brought. simple design - form that the runner

Bei der bekannten Bohrturbine dieser Art (deutsche einen koaxialen Kanal für den Eintritt der Treib-In the known drilling turbine of this type (German a coaxial channel for the entry of the propellant

Auslegeschrift 1 053 444) ist der Turbinenläufer mit flüssigkeit aufweist.Auslegeschrift 1 053 444) the turbine runner is fluid.

dem Bohrmeißel nicht nur drehfest, sondern auch in Der die Bohrspülung vom ersten zum zweitenthe drill bit not only rotatably, but also in the drilling fluid from the first to the second

Achsrichtung fest verbunden; dort müssen daher die 15 Beschaufelungsteil der Turbine leitende Kanal läßtAxial direction firmly connected; there must therefore be the 15 blading part of the turbine can be a conductive channel

Schwankungen des vom Bohrgestänge auf den Bohr- sich dadurch schaffen, daß der zwischen der HülseFluctuations of the drill pipe on the drill create by the fact that the between the sleeve

meißel ausgeübten Schubes, die sehr groß sein, näm- und dem Gehäuse befindliche Ringraum mit demchisel exerted thrust, which be very large, namely and the housing located annulus with the

Hch bis zu 301 betragen können, durch die den Tür- zweiten Beschaufelungsteil verbunden ist.Can be up to 301, through which the door-second blading part is connected.

binenläufer am Turbinenständer axial fixierenden Die drehfeste, axial lose Kupplung zwischen demAxial fixing of the turbine rotor to the turbine stand The non-rotatable, axially loose coupling between the

Drucklager — dort ist jeder Leitschaufelkranz als ein 30 Turbinenläufer und dem Bohrmeißel läßt sich üa-Thrust bearing - there is each vane ring as a turbine runner and the drill bit can be

Drucklager ausgebildet — aufgenommen werden, und durch erzielen, daß der Bohrkopf eine Welle auf-Thrust bearings formed - are added, and achieve that the drill head on a shaft

daher sind dort die Drucklager der Gefahr schnellen weist, die mit einem längsgenuteten Ende in einertherefore there are the thrust bearings of the danger rapid points with a longitudinally grooved end in one

Verschleißes ausgesetzt. Diese Gefahr zu vermeiden, längsgenuteten Bohrung des Läufers geführt ist.Exposed to wear and tear. To avoid this risk, the runner is guided through the longitudinally grooved bore.

also das Turbinen-Drucklager vom Schub des Bohr- Da also der Turbinenläufer und der Bohrer mitein-So the turbine thrust bearing from the thrust of the drill Since the turbine runner and the drill are

gestänges zu befreien, ist die erste Aufgabe der Er- 25 ander nur drehfest, aber nicht axial schubfest gekup-To free the rods, the first task of the earth-keeper is only torque-proof, but not axially shear-proof.

findung. pelt sind, bleibt der Axialschub auf das den Läuferfinding. are pelt, the axial thrust remains on the rotor

Bei jener bekannten Turbine ist die Aufteilung der im Gehäuse axial fixierende Drucklager Null, und Beschaufelung in zwei einander entgegen durch- dieses Lager hat nur die Aufgabe, den Läufer im Geströmte Schaufelkränze-Gruppen njcht eigentlich um häuse zu fixieren. Sein Verschleiß ist so aufs äußerste des Läuferschub-Ausgleiches willen vorgenommen: 30 verringert.In that known turbine, the division of the thrust bearings axially fixing in the housing is zero, and Blading in two opposing each other through this bearing only has the task of the runner in the flow Blade ring groups are not actually used to fix housings. Its wear and tear is so extreme made for the sake of rotor thrust compensation: 30 reduced.

Jene Turbine soll einen Gesteinskern herausbohren; Die auf den Bohrer ausgeübten Kräfte werdenThat turbine is supposed to drill out a rock core; The forces exerted on the drill will be

bei ihr ist deshalb das Gehäuse als der Läufer aus- innerhalb des Bohrmeißelkopfes von dessen eigenemwith it, therefore, the housing as the runner is from within the drill bit head of its own

gebildet, also der Läufer außen und der Ständer innen Drucklager aufgenommen. Dieses Lager nutzt sichformed, so the rotor outside and the stator inside thrust bearing added. This camp is making use of

angeordnet; bei ihr ist also zwischen dem festen, natürlich ab, aber läßt sich, da der ganze Bohrmeißc··-arranged; So with her there is between the solid one, of course, but can, since the whole drill bit c ·· -

hohlen Bohrgestänge und dem Läufer am oberen 35 kopfabnehmbarist,IeichtaufdemFeldeersetzen,ohnehollow drill pipe and the runner on the upper 35 head is removable, easy to replace on the field without

Ende der Turbine ein Spalt vorhanden, durch den daß es in die Fabrik zurückgebracht werden müßte.There was a gap at the end of the turbine through which it would have to be brought back to the factory.

Bohrspülung austritt; diese dort austretende Flüssig- Eine erfindungsgemäße Bohrturbine nebst Ab-Drilling fluid escapes; this exiting there liquid A drilling turbine according to the invention together with waste

keit für den Antrieb des Läufers zu nutzen, ist dort Wandlungen ist in der Zeichnung dargestellt. Es zeigtThe ability to use the rotor to drive the rotor is shown in the drawing. It shows

der eigentliche Zweck der oberen Schaufelkränze- F i g. 1 die Turbine in einem Längsschnitt,the real purpose of the upper blade rings- F i g. 1 the turbine in a longitudinal section,

Gruppe. Bei jener bekannten Turbine werden also 40 F i g. 2 den oberen Teil der Turbine im selbenGroup. In the case of that known turbine, 40 F i g. 2 the upper part of the turbine in the same

die beiden einander entgegen durchströmten Schau- Schnitt in größerem Maßstab,the two cross-section, flowed through each other, on a larger scale,

felkränze-Gruppen nur von je etwa einer Hälfte der Fig. 3 und 4 den unteren Teil der Turbinen in zwei durch die Turbine fließenden Bohrspülung durch- Ausführungsarten, im Längsschnitt größeren Maßströmt; dort ist also die Bohrspülung für ihren eigent- Stabes.Felt wreaths groups of only about one half of FIGS. 3 and 4, the lower part of the turbines in two drilling fluid flowing through the turbine - types of execution, larger flow in longitudinal section; there is therefore the drilling fluid for its own rod.

liehen Zweck, den Bohrermeißel freizuspülen, nur zur 45 Die erfindungsgemäße Bohrturbine enthält — s. Hälfte verfügbar. Diese Nachteile zu vermeiden, also F i g. 1 — zwei Teile, nämlich eine Hydraulikturdie gesamte der Turbine zugeführte Bohrspülung dem bine I und einen Bohrmeißelkopf 2.
Bohrmeißel zuzuführen, ist die zweite Aufgabe der Die Hydraulikturbine enthält ein zylindrisches GeErfindung, häuse 3, das in seinem oberen Teil in einen Stutzen 4borrowed purpose of flushing the drill bit, only for 45 The drilling turbine according to the invention contains - see half available. To avoid these disadvantages, so F i g. 1 - two parts, namely a hydraulic system, the entire drilling fluid supplied to the turbine, the bine I and a drill bit head 2.
The second task of the hydraulic turbine is to feed drill bits

Diese beiden funktionell miteinander zusammen- 50 zur Befestigung an einem (nicht dargestellten) Bohrhängenden Aufgaben werden erfindungsgemäß da- gestänge übergeht. Dieses zylindrische Gehäuse trägt durch gelöst, daß das Turbinengehäuse in an sich zwei Leitschaufelgruppen 5 und 7 und bildet mit bekannter Weise den Ständer der Turbine bildet, mit ihnen zusammen den ruhenden Turbinenteil. Es trägt dem der Bohrmeißelkopf abdichtend verbunden ist, — mittels eines Drucklagers 6 — auch die Welle 8; in welchem das mit dem Turbinenläufer in Dreh- 55 diese, mit zwei Laufschaufelgruppen 10 und 12 berichtung fest und in Achsrichtung beweglich gekup- stückt, bildet den Läufer.These two functionally together 50 for attachment to a (not shown) drill hanging According to the invention, tasks are passed over. This cylindrical housing carries solved by that the turbine housing in itself two guide vane groups 5 and 7 and forms with As is known, forms the stator of the turbine, together with them the stationary turbine part. It carries to which the drill bit head is sealingly connected - by means of a thrust bearing 6 - also the shaft 8; in which that with the turbine rotor in rotation 55 this, with two rotor blade groups 10 and 12 reporting Coupled firmly and movably in the axial direction, forms the rotor.

pelte Bohrwerkzeug drehbar gelagert und mittels eines Wie F i g. 2 zeigt, ist die Welle 8 in ihrem oberen,pelte drilling tool rotatably mounted and by means of a As F i g. 2 shows, the shaft 8 is in its upper,

eigenen Drucklagers axial fixiert ist, und die Bohr- dem Stutzen 4 nahen Teil mit einem axialen Kanalown thrust bearing is axially fixed, and the drilling part close to the nozzle 4 with an axial channel

spüIungs-Führungseinrichtung für ein nacheinander 14 versehen, der das durch den Stutzen 4 ankom-Flushing guide device for one after the other 14 is provided, which arrives through the nozzle 4

erfolgendes Durchströmen der Laufschaufeln in Form 60 mende Treibmittel führt, und dort in einem Lager 16flowing through the rotor blades in the form 60 leads to propellant, and there in a bearing 16

U-förmig gekrümmter Kanäle ausgebildet ist. gehalten, das den Durchgang zwischen der Welle undU-shaped curved channels is formed. held that the passage between the shaft and

Es empfiehlt sich, die Zahl der Schaufelkränze auf dem Zylinder 3 sperrt.It is advisable to lock the number of blade rings on the cylinder 3.

die beiden Gruppen von Schaufelkränzen so zu ver- Der Kanal 14 mündet durch rückwärts gekrümmtethe two groups of blade rings so that the channel 14 opens out through backward curved ones

teilen, daß der resultierende Axialschub auf das Kanäle 18 in einen die Welle 8 umgebenden Raum,share that the resulting axial thrust on the channels 18 in a space surrounding the shaft 8,

Drucklager gleich Null ist. 65 der durch eine Hülse 20 begrenzt wird, die koaxialThrust bearing is zero. 65 which is limited by a sleeve 20 which is coaxial

Der U-förmige Strömungskanal, der die Bohrspü- zum zylindrischen Gehäuse 3 angeordnet und an dielung vom aufwärts durchflossenen ersten Beschaufe- " sem durch Stege 22 gehalten ist, so daß sie zwischen lunesteil zum abwärts zu durchlaufenden zweiten Be- sich und dem Gehäuse einen Ringraum 24 bildet.The U-shaped flow channel, which the drilling fluid to the cylindrical housing 3 and arranged on dielung is held by webs 22 so that they are between lunesteil forms an annular space 24 to the second bed to be traversed downwards and the housing.

Claims

This sleeve 20 carries the guide vanes 5 inside, while this wear, el. Ii. the loss of thickness of the bearing edge which bears the rotor blades 10 on the outside. block, an axial displacement of the shaft 34, these blades 5 and 10 are arranged so that that a sliding of the longitudinally grooved end 32 in which they form at least one axial turbine stage. This bore 30 causes, but does not effect, the turbine axially formed by the blades 5, 10 has at the 5 displacement of the rotor 8. The load on the upper pressure end of the sleeve 20 connection with the space bearing O does not change.

24; the propellant that has flowed in through the nozzle. The drill bit head 2 can be made a double U-bend if the pressure is required. The space bearing 40 is too heavily abraded, slightly as a whole 24 is set by a bearing 28 in which the shaft 8 is removed by depositing the extension 36 and on which the sleeve 20 is attached, screwing on and the longitudinally grooved end 32 pulls out; through channels 26, which in the upper part of a second then the thrust bearing 40 can easily be replaced.
The turbine discharges, which is formed by guide vanes 7 and sometimes it can be better on the pressure rotor blades 12, which only house the force imparted to the drill bit 3 or are fastened to the shaft 8 on the same bearing 40. to act, namely the hydrostatic pressure

That at the upper end of the turbine through the pipe 15 of the carrying fluid, which at the location of the lower radial

7en 4 entered propellant flows through the camp prevails to lead to the thrust bearing 6 or

nal 14 inside the shaft 8, then in the turbine - more precisely - through the mutually opposing

with the blades 5, 10 upwards, reverses through the direction of the two groups of blades of the turbine

Space 24 returns into channels 26 and then flows to be canceled. That's easy to do, though

through the turbine with the blades 7, 12 downwards, ao the flow rate is constant.

It therefore creates a channel 46 in one of these turbines, which is axially in the shaft 34 of the drilling

upward axial thrust and in the other chisel head is arranged (see Fig. 4) up to

Turbine a downward axial thrust. Iängsgenufp-th upper end 32 of this shaft and

The number of stages is passed through each of the blading and on to the

chosen that the from the propellant flow in the upper 25 runner 8 through a channel 43 extended through

Blading generated upward axial thrust both inclined channels 45 with the lower blading

which is connected to the propellant flow in the second loading part 7, 12.

development caused downward axial thrust as well as the The cylindrical housing 3 is then on his apparent weight of the runner in the drilling fluid lower end above the thrust bearing 6 with a cancels. The resulting thrust is fitted on the thrust 30 radial bearing 50 which is the fluid flow bearing 6 is then practically zero. This pressure bearing seals tightly. Furthermore, the shaft 34 is played essentially the role of fixing the runner within the extension 36 both by the in the cylindrical housing 3. thrust bearing 40 and the radial bearing 42 as well as through

On which through the entirety of these two doors a ball bearing arranged at their upper end

binen mutually opposite flow directions 35 52 out.

The hydraulic motor is the drill bit head. The rotor 8 has at its end a radial bearing made of rubber - also with a sealing axis Bore 30 with longitudinal grooves in which a wrestle is provided - his. The thrust bearing can be a Longitudinally grooved end 32 of a shaft 34 inserted rubber plain bearings or a ball or roller bearing that carries the drill bit 35. 40 or of any other kind.

The shaft 34 is in a cylinder 36 which has a whole propellant fluid flowing through the two Extension of the housing 3 forms and on this blading groups and the drill bit head and is screwed on at 38, at its upper end acts on the drill bit. Its effectiveness can iels a thrust bearing 40, which is similar to the thrust bearing 6 in that it may reduce the propellant, and near its lower end in a ridge or that exerted on the drill bit radial bearing 42 supported. Thrust cannot be reduced. Only the printing

According to one shown in FIG. The execution bearing 40 shown in FIG. 3 takes the one given to the drill bit or

form is the shaft 34 below this thrust bearing caused by vibrations of the drill bit

40 penetrated by inclined channels 44, the axial movements and thus the through this axial

through an axial channel 46 up to the friction caused by the drilling movements 50; only this

Chisel 35 holding bore continue and the thrust bearing so uses itself in the course of operation

lower turbine escaping propellant to the. Because the bit head moves easily as a whole

Let the drill bit flow out. by simply unscrewing the

The radial bearing 42 guides the shaft 34 in the extension cylinder 36 and pulling out the

Extension cylinder 36 and closes the liquid 55 longitudinally grooved shaft end 32 can be removed, it is

stream away from below the channels 44. easy to replace the drill bit head with another similar

The thrust bearing 40 transfers to the drill bit to be replaced without it being necessary to bring the 35 from the cylindrical housing 3 and its turbine into the factory,
lengthening 36 the weight imposed on it minus this drilling turbine, since it does not contain any parts exposed to any significant wear to the hydrostatic pressure of the propellant fluid on 60, has the shaft cross-section at the location of this lower bearing and independently of that on the drill bit, but it does not receive any of the Turbine-exerted weight works, an extremely long static axial thrust; only the torque of the door duration, regardless of the type of bine implemented, is transmitted to the shaft 34. The printing work.

lager takes all fluctuations of the drilling 65 patent claims ¹
chisel exerted force and the frictional forces caused by these fluctuations. In contrast to the first hydraulic drilling turbine with a thrust bearing 6, it is therefore subject to wear. the housing releasably and non-rotatably connected

Drill bit head, the rotor of which is driven by the drilling fluid, with the drilling tool rotatably, is connected and held on the stator by thrust bearings and their blades to compensate for the rotor thrust in.zwei blade rings are divided, between which a guide device for which drilling fluid flowing through the rings in the opposite direction is appropriate, characterized in that that the turbine housing (3) forms the stator of the turbine (1) in a manner known per se, with in which the drill bit head (2) is sealingly connected, in which it is connected to the turbine runner (8) the drilling tool (35) coupled fixedly in the direction of rotation and movably in the axial direction is mounted and axially fixed by means of its own pressure bearing (40), and the drilling fluid guide device designed for successive flow through the rotor blades (10, 12) in the form of U-shaped curved channels (18) is.

2. drilling turbine according to claim 1, characterized in that the number of stages so on two blading parts (5, 10; 7, 12) is distributed that the thrust bearing (6) to be received resulting axial thrust of the rotor is zero.

3. drilling turbine according to claims 1 and 2, characterized in that the guide vanes (5) of the first blading part are arranged in a coaxial sleeve (20) which is connected to the upper part of the rotor (8) and the upper part of the housing (3) forms a U-shaped current path.

4. Turbine according to claim 3, characterized in that the rotor (8) has a coaxial channel (14) for the entry of the propellant liquid.

5. Turbine according to one of claims 1 to 4, characterized in that the between the Sleeve (20) and the housing (3) located annular space (24) is connected to the second blading part (7,12).

6. Turbine according to claim 1, characterized in that the drill head (2) has a shaft (34) having a longitudinally grooved end (32) in a longitudinally grooved bore (30) of the rotor (8) is performed.

1 sheet of drawings