Device for well tube interlock screwing together and unscrewing

FIELD: mechanical engineering, particularly connecting or disconnecting drilling and casing pipe couplings or joints.

SUBSTANCE: key is divided into separate independent technological units and has upper and lower bodies with connectors in front parts thereof. Built in the front parts are toothed rotor wheels in which pipe clamping means are arranged. The key also has gear and intermediate gear assemblies, common drive to rotate and stop the pipes. The drive comprises differential and high-speed reduction gears with hydraulic motors. Upper body may be rotated about pipe clamping means axis to lift or lower thereof relative lower body. The body is provided with thread torqueing/loosening means, braking means and means to supply process lubricant to threaded nipple part of pipe to be screwed on. Lower body has thread torqueing/loosening means. The key also comprises positioner provided with horizontal and vertical key displacement mechanisms.

EFFECT: extended functional capabilities, reduced time to replace clamping members of upper and lower key executive tools and braking system members, increased reliability of device units, increased load-bearing capacity of pipe interlocks.

3 cl, 6 dwg

 

The invention relates to a drilling technique and can be used on drilling rigs for mechanization of tripping operations during Assembly or disassembly of drilling and casing strings.

Currently drilling rigs are used for keys of different types, intended for screwing the drill and casing pipes, with operations zakrepleniyu or unfastening the threaded connections are performed either manually using sets of machine keys and Primorskaya, or keys, are equipped with a multi-drive configuration speed and torque.

The most common keys for screwing or unscrewing drill pipe is automatic drilling key type battery open maw, equipped with pneumatic drives the rotation of the upper tube and the lower locking tube (1).

The disadvantages of these keys are as follows:

- limited use of pipe diameters;

- limited amount of transfer pipes torque when screwing or unscrewing.

Famous key high degree of mechanization, with built-in pick bodies, made in the form of two coaxial spaced mechanisms installed on the console reference sites and connected through guides VERTIC is a high move with the rotatable on a common axis brackets and provided with site positioning device. In these keys for locking the bottom of the tube and the rotation of the upper tube are separate drives, made in the form of a multi-stage gearbox with hydraulic motor for rotation of the upper tube and in the form of hydraulic cylinders pivotally connected to the outer and inner housings for locking the lower pipe(2, 3, 4, 5, 6, 7, 8, 9, 10, 11).

Option (11) is chosen for the prototype.

The disadvantages of the prototype are:

the mandatory presence of rigid guides required to absorb reactive with separate actuator rotation and locking of the tubes;

- the design complexity, expressed by the presence of actuators with multi-system mechanical adjustment of the torque and rotation speed;

- increased contact and bending stresses on the timing element for the transfer of high torques, which leads to an increase of the dimensions, mass and a decrease in the reliability of operation of the key;

- increased complexity of service key when replacing the gripping bodies in the transition from one pipe diameter to another;

- limited use keys on drilling rigs equipped with an automatic feeding system of pipes (GRP);

- limited ability to use keys when building layouts and candles.

These problems have stimulated the search for new technical solution is.

The proposed invention aims: to exclude the transfer of reactive points on the exterior design of the drilling rig; to increase the functionality of the operation of the key; to reduce the time of replacement of the gripping elements of the upper and lower working bodies of the key elements of the brake system while ensuring the reliability of components under increased loads on the castle pipe connections.

This problem can be solved by separation on a separate technical units and includes:

- top case with a built in him by re-tensioning device / unlock threads, trubozahvatnym device, the brake device and a set of intermediate gears;

lower case with built in him by re-tensioning device / unlock threads, trubozahvatnym device and a set of intermediate gears;

- rotation drive pipe is made in the form of a General rotation and locking of the pipe drive unit comprising a differential, high-speed gearboxes with motors;

- positioner, which is made with mechanisms for horizontal and vertical movement of the key;

- feed mechanism lubrication on the threaded part of the nipple screwed pipe.

The upper body is made with the possibility of rotation about the axis robotizing device I raise or lower relative to the lower housing, the mechanism for vertical movement of the positioner key made in two separate sites, including the table and the bottom base associated with a table moving column with built-in hydraulic lift table, and the lower housing, in turn, has a retractable stops for fixing the upper body, two arms and four buckles, is bonded with two rack rolling pin mechanism horizontal movement of the key of the positioner, which are connected through gear blocks with cylinders horizontal movement embedded in the body of the table.

In turn, the brake unit of the upper housing contains the pulley, four brake pads and Samoobrona clip with the cylinders of the clamping pads to the pulley, with the clip in the Central part has a toothed sector, which interact through the slats and gear pinion with hydraulic cylinders re-tensioning-breaking threads, from the interaction of feedback from the actuator rotation mutually destroyed, and the yoke, and through it the brake pulley, and trubine device receive an additional torque, the key is provided with an additional mechanism for re-tensioning-breaking threads in the lower body, consisting of two cylinders connected stocks with a rotary wheel, and buildings through W is miry with the lower case key and reactive moments from the drive unit and the action of the cylinders facing each other with opposite signs.

An additional braking device of the upper shell has a mechanism by which technological lubricant on the threaded part of the nipple screwed pipe, which contains a base with radially placed grooves in which are built housing units with nozzles, with the possibility of radial movement, each case is made with a cylindrical bore in which the integrated syringe mechanism consisting of a valve with a piston and spring.

The technical result in the implementation of the invention is expressed in the use of the design of key block system, individual nodes, equipped with appropriate mechanisms, interaction of which operations are performed:

- screwing-razveshivaniju castle United pipes with high moments of twisting and locking tubes with quenching reactive moments inside your own body key and substantial reduction of the loads on the gear elements of the rotator and the locking key, ensuring the reliability of actuation locking elements trubobetonnykh devices;

- quick change trubobetonnykh devices or their components when worn or switch to another size on the diameter of the well pipe by use of the lower clamp upper housing and modular components trubobetonnykh elements;

- rapid replacement of elements of the brakes when they wear through the use of subassemblies that are not associated with total disassembly of the key.

Other factors providing technical result is:

- increased functionality in terms of expanding the range of diameters of pipes, increasing torque, the possibility of a key installation in suspended variant, key as with manual placement of the pipes and the unit is equipped TSA;

- use a separate mechanism to apply lubricant to the threaded part of the nipple screwed pipe;

- simple design, maintenance, Assembly, adjustment and disassembly of individual nodes through the use of block-level elements;

- high interchangeability of the working bodies of the upper and lower trubobetonnykh devices;

- high adaptability to manufacture and relatively low cost of manufacture.

This allows to make a conclusion on the application of innovative solutions in the development of the key, its novelty, high level design, and the ability to manufacture key in terms of the engineering enterprise is not in doubt.

Information confirming the possibility of carrying out the invention are illustrated by the drawings, where:

figure 1 presents a General view of the key from the side;

figure 2 - General view of the key in the longitudinal R is trese;

figure 3 - view of the lower chassis section a-a;

figure 4 is a view of the upper casing section b-B;

figure 5 is a view of the mechanism for supplying lubricant to the threaded part of the nipple, top view;

figure 6 is a view along the section b-C.

The key consists of individual technological units:

the bottom of the housing 1, the upper casing 2, a common drive unit 3, the setting mechanism 4 and the mechanism for supplying lubricant to the threaded part of the nipple 5.

The lower and upper body from the front side have a connector and connected by lateral folding guides 6, the upper casing is placed in the cylindrical bore of the glass 7 of the lower housing and fixed against rotation retractable stops 8.

In turn, the lower housing 1 contains a frame 9, which consists of the lower supporting sheet 10, the top sheet 11 and the lateral plates 12, connecting the upper and lower sheets, the sheet 10 is integrated bearing 13, on which are mounted a rotary wheel 14, and the sheet 11 has a glass 7.

Rotary wheel 14 on the inner side is of the tracing surface 15, which is installed trubine device 16 containing the ferrule 17 and four of the slide 18, with a side of the tracing surface of the roller bearing 19, and the side pipe jaw with solid carbide 20.

The holder 17 is fixed to the lower sheet 10 dowels 21.

Between the sheets 10 and 11 are built the VA intermediate block 22, one of which involves the engagement with the rotary wheel 14, and the other with the drive pinion 23 of the drive unit 3. From the drive unit 3 in the cylindrical bore of the sheet 11 has a glass 24, on which is mounted drive unit 3.

The Cup 24 has two horizontal cylindrical bore in which is inserted the slide stops 8.

On the side surfaces 12 of the frame 9 on each side set: side-axis robotizing device 16 is a hydraulic cylinder 25 of the lifting of the upper casing 2, the bracket 26 for folding guides 6, cylinder re-tensioning-breaking threads 27, the drive - two sites 28 for insertion in four couplers 29, through which the lower housing 1 is bonded with rack rolling pin 30 setting mechanism 4, and the front side of the housing 1 has two bracket 31 to which is attached a rolling pin 30.

The upper case 2 (figure 4) also contains a welded frame 32, consisting of the lower support sheet 33, the upper sheet 34 and the lateral plates 35.

On the lower sheet 33 integrated support rollers 36, which are mounted rotary wheel 37, which also have the tracing surface 15, and trubine device 16, the yoke 17 which is fixed by dowels 21 to a pulley 38 of the brake device 39.

Between the sheets 33 and 34 are embedded two intermediate unit 40 and the intermediate block 41, which articulated link: the Loki 40 bucket wheel 37 and the block 41, and the block 41 with the drive gear 42 of the drive unit 3.

On the top sheet 33 on the axis robotizing device 16 a brake device 39, consisting of a pulley 38, Samoobrona clip 43 is placed inside in a horizontal bores eight cylinders 44 and four brake pads 45.

The yoke 43 has three tabs, two of which protrusion 46 is placed on the edges of the cage, and one 47 in the center of the cage, with the protrusion 47 is made with the sector gear 48.

On the top sheet 33 also established a mechanism for re-tensioning-breaking threads 49, which consists of two pairs of hydraulic cylinders 50 and 51, two rails 52 and 53, and a toothed gear 54. While the rail 52 is directly connected by meshing with the sector gear 48 in the bottom, and the rail 53 is connected by a toothed sector 48 in the upper part of the toothed gear 54.

The cylinders 50, interacting with the rail 52, provide re-tensioning of the threads when screwing, and the hydraulic cylinders 51 and the rail 53 provide the loaded threads at the break.

On the lateral surfaces of the housing 2 is also installed brackets 26 for folding guides 6, and the bottom sheet is further provided with a centering Cup 55.

Drive unit 3 is installed in the bore of the Cup 24 and consists of a differential gear 56 and the high-speed gear 57 with built-in motors 58.

Mechanics is the m vertical and horizontal displacements of the key 4 is made in two separate nodes: table 59 (upper base and lower base 60, containing a movable column 61 with built-in hydraulic cylinder 62 of the lifting table.

In turn, table 59 on the side surfaces has two longitudinal grooves, in which are mounted rack rolling pin 30 connected by gearing through gear blocks 65 with horizontal cylinders move 66 embedded in the body of the table 59 (not shown).

The feeder technological lubricant 5 is installed on Samoobrona yoke 43 of the brake device 39, consists of a housing 67 having radial guides 68, which have built four of the slide 69 unit injector 70.

Each slide 69 has an inner cylindrical bore 71 in which is installed a valve with the piston 72 and spring 73.

For radial movement of the slide 69 and nozzle 70 is used screw mechanism 74.

The key works in the following way. While replacing trubobetonnykh devices 16 at the bottom of the housing 1 and the upper shell 2 is made by removing the folding guides 6, the tap retractable lugs 8 on the inside of the Cup 24 and manually the upper body rotates about the axis robotizing device, transporting it from the bore of the Cup 24. Then using a crane removed the upper body of the centering Cup 7.

Replacement trubobetonnykh device 16 is made: at the top of the housing 2 by extracting the brake pulley 38 together with trubozahvatnym device 16 and then detach; at the bottom of the hull by removing the Cup 7 and disconnection of the bolts fastening the holder 17 with the bottom sheet 10, after which trubine device 16 is removed from the rotary wheel 14.

Screwing or unscrewing locking connection zakreplenien or releasing threads produced according to the scheme: screwing the pipe deflection control arm manipulator is activated hydraulically actuated key. The rotation and torque from motor 58 through a gear drive unit 3, the intermediate gears 40 and 41 of the upper shell are transmitted rotary wheels 14 and 37 opposite to each other destinations. At the same time automatically served the pressure in the cylinders 44 of the brake 39, pads 45 are pressed against the pulley 38, stermaria him, and through him, and the rotary wheel 37. In the early going toe-in carbide dies 20 on the clutch pipe 75, and the holder 17 fixed by dowels 21 with the plate 10 of the housing 1, remains motionless.

When reaching a certain value of the pressure in the hydraulic system is driven wheel 37 and the convergence of carbide dies 20 to the upper pipe 76 with its subsequent clamping, after which the rotary wheel 37 and trubine device 16 rotate together as one unit, and the pipe 76 is transmitted torque through the clutch plates 20 with the pipe 76 under the action of the brake is on the moment of braking, 39.

When you touch the ends of the nipple 76 to the sleeve tube 75 is a sharp increase in resistance, which leads to the increase of pressure in the hydraulic system and when reaching a certain value of pressure automatically opens the valve in the hydraulic system, and the working fluid enters the cylinders 50 of the mechanism of re-tensioning of the threads of the upper shell 2 and the cylinders 27 of the mechanism of re-tensioning of the threads of the lower housing 1. The process of re-tensioning of the threads.

When unscrewing pipes deviation of the arm is a hydraulic system maximum pressure at which the working fluid is simultaneously supplied to the hydraulic cylinders 51 and 27 mechanisms for the breaking of the threads in the cylinder 44 of the brake 39 and the hydraulic motors 58 - is the disruption of the thread. Simultaneously with the start unfastening served the pressure in the cylinders 25 of the lifting of the upper casing 2.

At the completion of operations by screwing or unscrewing pipe wrench away from the axis of the hole in the back position by means of a rack rolling pin 30, gear blocks 65 and cylinders 66.

Grease the threaded part of the nipple screwed pipe 76 is made according to the scheme: the key is omitted in the lower position, it blocks 69 nozzles 70 are in the position of the threaded part of the nipple pipe 76, previously inserted in the coupling of the column 75. Served the pressure in the piston portion of the valve 72, rugini 73 is compressed, removing the spool 72, forming a receptacle in the front of the block 72, which serves a portion of the lubricant. When removing the pressure of the spring 73 open, moving the spool 72, and squeeze out a portion of the lubricant through the nozzle onto the threaded part of the nipple, after which the key rises to the position of the screwing-unscrewing.

Sources of information

1. Drill key standard automatic battery-3M2 THE 26-02028-79.

2. U.S. patent No. 3550485, MCI 25 In 17/00.

3. U.S. patent No. 4585079, MKI E 21 In 3/04.

4. Copyright certificate № 1170111, MKI E 21 In 19/16.

5. Copyright certificate № 1640352, MKI E 21 In 19/16.

6. Copyright certificate № 1498904, MKI E 21 In 19/16; 19/00.

7. Copyright certificate № 1661335, MKI E 21 In 19/16.

8. Patent No. 20119677, MKI 5 E 21 In 19/16.

9. Patent No. 2078901, MKI E 21 In 19/16.

10. Patent No. 2086400, MKI E 21 In 19/16.

11. Copyright certificate № 1357537, MKI E 21 In 19/16 (prototype).

1. Wrench for screwing and unscrewing tool joints of well pipes, comprising upper and lower housing with built-in gear rotary wheels, which posted robotainua device; blocks of gear and the intermediate gear drive rotation of the pipe, as well as positioners move key, characterized in that it is divided into separate technical units and includes an upper housing with a built-in device it re-tensioning-R the fastening threads, trubozahvatnym device, the brake device and a set of intermediate gears; the lower case with built in him by re-tensioning device / unlock threads, trubozahvatnym device and a set of intermediate gear wheels; a motor for rotation of the pipe is made in the form of a General rotation and locking of the pipe drive unit comprising a differential, high-speed gearboxes with motors; a positioner, which is made with mechanisms for horizontal and vertical movement of the key; a mechanism for supplying lubricant to the threaded part of the nipple screwed pipe; the upper body is made with the possibility of rotation about the axis robotizing device and its raising or lowering relative to the lower housing, the mechanism of vertical move the positioner is designed as two independent nodes, including the table and the bottom base associated with a table moving column with built-in hydraulic lift table, and the lower housing, in turn, has a retractable stops for fixing the upper body, two arms and four buckles, is bonded with two rack rolling pin mechanism horizontal movement of the key of the positioner, which are connected through gear blocks with cylinders horizontal movement embedded in the body of the table.

2. The key according to claim 1, characterized in that the braking device of the upper housing contains the pulley, four brake pads and Samoobrona clip with the cylinders of the clamping pads to the pulley, with the clip in the Central part has a toothed sector, which interact through the slats and gear pinion with hydraulic cylinders re-tensioning-breaking threads, from the effects of feedback from the actuator rotation mutually destroyed, and the yoke and through it the brake pulley, and trubine device receive an additional torque, the key is provided with an additional mechanism for re-tensioning-breaking threads in the lower body, consisting of two the cylinders are connected by rods with the rotary wheel and buildings through the hinges to the lower case key and reactive moments from the drive unit and the action of the cylinders facing each other with opposite signs.

3. The key according to claim 1 or 2, characterized in that the brake device of the upper shell has a mechanism by which technological lubricant on the threaded part of the nipple screwed pipe, which contains a base with radially placed grooves in which are built housing units with nozzles, with the possibility of radial movement, each case is made with a cylindrical bore, to the verge integrated syringe mechanism, consisting of a valve with a piston and a spring.



 

Same patents:

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