SU1218062A1 - Pipe holder - Google Patents

Description

The invention relates to the field of the mining industry, in particular, to devices used in tripping operations with drill pipes when drilling wells.

The aim of the invention is to simplify the design and increase reliability in operation.

FIG. 1 shows a schematic of a pipe holder, a plan view; in fig. 2 is a section A-A in FIG. one; in fig. 3 - kinematic diagram of the eccentric mechanism; in fig. 4 shows the layout of the pipe holders and the pipe-holder on the mast.

The pipe holder contains a split case 1, made of two plates, between which the die 2 is rigidly fixed and the slider 3 is fitted securely with a die 4 fixed in it. In the slide 3 an eccentric shaft 5 is mounted with the possibility of rotation in the housing 1, the power interaction hydraulic cylinders 9 (Fig. 1 through links 10 and 11, connected by a hinge with levers 7 and 8, the movement is transmitted to the eccentric shaft 5 and the sleeve 6. At the same time, the latter occur in different directions (in Fig. 3 it is indicated by arrows). Position I ( Fig. 1) links 10 and 11 correspond to open In this case (see Fig. 3), the axis of eccentricity of shaft 5 is at point 01, and sleeves 6 - at 02. When the levers 7 and 8 are rotated 90 °, eccentric shaft 5 can be displaced by the value of eccentricity e, t. E. The axis 01 moves to point 03, and the axis of sleeve 6 rotates around the instantaneous center O-O, 5 moves to point 04 by up to 2e, which corresponds to the distance Ze and position II (Fig. 1). The slider 3 is mixed with the plate 4 by the same amount, which allows clamping the pipe 12 in this range of movement. The clamping system

ten

 ,

eccentricities of the shaft 5 and the sleeve b, thus providing the possibility of self-installation of the die 4 through the drill pipe 12. The tubing hanger for performing the functions of the pipe splitter can be equipped with an additional power hydraulic cylinder 13, the stem of which is hinged to the housing 1.

FIG. 4 shows the layout of the mast 14 of the pipe distributor 15 and the tube holder 16.

The holder works as follows

thirty

in a way.

relieving pressure in it.

When the device performs the functions of the pipe-distributor, pressure is supplied to the hydraulic cylinder 13, the rod of which moves, turns the body 1 with a force ensuring the breaking of the tightened threaded connection, since the center of rotation of the body 1 is the pipe 12 clamped.

With the aid of the cylinder 9, the plates are opened, freeing the pipe 12, and by the reverse stroke of the cylinder 13, the device returns to its original position.

Aa

From the power cylinder 9 (Fig. 1), the links 10 and 11, pivotally connected with the levers 7 and 8, are transmitted to the eccentric shaft 5 and the sleeve 6. At the same time, the latter are moved in different directions (shown in Fig. 3 by arrows) . Position I (fig. 1) of links 10 and 11 corresponds to an open pipe holder. In this case (see Fig. 3), the axis of eccentricity of shaft 5 is at point 01, and bushings 6 are at 02. When the levers 7 and 8 are rotated 90 °, the eccentric shaft 5 can be displaced by an eccentricity value e, i.e. 01 goes to point 03, and the axis of the sleeve 6 rotates around the instantaneous center O-O, 5 moves to point 04 by up to 2e, which corresponds to the distance Ze and position II (Fig. 1). Moreover, the slider 3 is mixed with the plate 4 by the same amount, allowing the clamping of the pipe 12 in this range of movement. The clamping system

0

,

relieving pressure in it.

When the device performs the functions of the pipe-distributor, pressure is supplied to the hydraulic cylinder 13, the rod of which moves, turns the body 1 with a force ensuring the breaking of the tightened threaded connection, since the center of rotation of the body 1 is the pipe 12 clamped.

With the aid of the cylinder 9, the plates are opened, freeing the pipe 12, and by the reverse stroke of the cylinder 13, the device returns to its original position.

fig.g

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Editor L. Veselovska Order 1097/40

Compiled by E. Stolbtsov Tehred I. VeresKorrektor L. Patay

Circulation 548 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Riga

Claims (1)

PIPE HOLDER, including dies installed in a split housing, a power drive with a lever system, characterized in that, in order to simplify the design and increase reliability in operation, the pipe holder is equipped with an eccentric shaft mounted in a split housing and an eccentric sleeve mounted to interact with the outer cylindrical surface with one of the dies, and the inner cylindrical surface of the eccentric sleeve mates with the eccentric part N0 QO> □ 5 GO