CN2830629Y - Rolling beam centralizer - Google Patents

Abstract

The utility model discloses a rolling type centralizer for an oil rod, which is composed of an upper centralizing body (1) and a lower centralizing body (2), wherein roll balls (4) are positioned in the middle of the upper centralizing body (1) and the lower centralizing body (2), and a wedge (3) is inserted and arranged between the upper centralizing body and the lower centralizing body; the upper centralizing body (1) is divided into two halves from the middle, a wedge-shaped groove (5) is arranged in the middle of the external side, a dovetail groove (6) is arranged on the internal side, and the two halves are inserted, installed and connected by the dovetail groove (6); the lower centralizing body is divided into two halves from the middle, a wedge-shaped groove (5) is arranged in the middle of the external side, a dovetail groove (6) is arranged on the internal side, and the two halves are inserted, installed and connected by the dovetail groove (6). The rolling type centralizer for an oil rod changes the structure of the centralizer, the static friction is changed into the rolling friction, the coefficient of friction is reduced, the friction force between the oil rod and an oil conduit is reduced, the service life of the oil rod and the oil conduit is extended, the period of maintenance operation is extended, the frequency of operations is reduced, the operation cost is reduced and the operation expenses are saved.

Description

Tumbling-type beam hanger centralizer

Technical field:

The utility model relates to oil pumping rod centering device, specifically is tumbling-type beam hanger centralizer.

Background technology:

At present, the centralizer that uses on the sucker rod of oilfield is two semicircles, and by two plug-in cylindrical tubes of forming of semicircle, the center is porose.Centralizer is placed on the interface of sucker rod when using, be fixed on sucker rod short circuit or the sucker rod in the mode of pressing from both sides or block, and sucker rod passes from the centralizer center, and the main effect of centralizer is to prevent sucker rod generation eccentric wear.Be static friction between the centralizer of this structure and the sucker rod, so friction factor is big.Friction for a long time can be ground away centralizer between sucker rod and the centralizer.After centralizer damaged, sucker rod and oil pipe directly rubbed, and shortened the application life of R a T, and the maintenance activity cycle is shortening thereupon also, operation often, the operating cost height.

Summary of the invention:

The purpose of this utility model is to provide a kind of tumbling-type beam hanger centralizer at the problems referred to above.

The utility model purpose is to be achieved by following technical proposals: tumbling-type beam hanger centralizer is by last centralizer body, down centralizer body constitutes, and last centralizer body, the centralizer body centre is placed with ball down, connected by the chock plug-in mounting between up and down; Last centralizer body has the wedge groove from middle dimidiation in the middle of per outside of half, and the inboard has dovetail groove, connects by the dovetail groove plug-in mounting between the two halves; Following centralizer body has the wedge groove from middle dimidiation in the middle of per half outside, and the inboard has dovetail groove, connects by the dovetail groove plug-in mounting between the two halves.

Described going up in half inboard dovetail groove (pin thread) of centralizer body has recessed square catching groove, in second half inboard dovetail groove (box) protruding square button arranged.

Described have recessed square catching groove in half inboard dovetail groove (pin thread) of centralizer body down, in second half inboard dovetail groove (box) protruding square button arranged.

During use, sucker rod passes from the centralizer center, and centralizer does not need to fix with sucker rod.When sucker rod generation eccentric wear, the ball in sucker rod and the centralizer contacts, and sucker rod and oil pipe do not rub.

The utlity model has following advantage and good effect:

1. tumbling-type beam hanger centralizer has changed the structure of centralizer, and static friction is become rolling friction, has reduced coefficient of friction, has reduced the frictional force between beam hanger and the oil pipe, has prolonged the application life of beam hanger and oil pipe.

2. prolong the maintenance activity cycle, reduced the operation number of times.

3. reduce operating cost, saved operating cost.

Description of drawings:

Fig. 1 is the utility model overall structure assembling schematic diagram;

Fig. 2 is that Fig. 1 D-D is to the structure sectional view;

Fig. 3 holds up the outboard structure schematic diagram in the utility model;

Fig. 4 is the inside structure schematic diagram of Fig. 3;

Fig. 5 is the structural representation of looking up of Fig. 4;

Fig. 6 be among Fig. 4 A-A to structural representation;

Fig. 7 is the outboard structure schematic diagram of following centralizer body in the utility model;

Fig. 8 is the inside structure schematic diagram of Fig. 7;

Fig. 9 is the plan structure schematic diagram of Fig. 8;

Figure 10 be among Fig. 8 B-B to the structure schematic diagram;

Figure 11 is the side structure schematic diagram of Figure 12;

Figure 12 is a chock Facad structure schematic diagram in the utility model;

Figure 13 is that C-C among Figure 12 is to structural representation.

2 times centralizer bodies of centralizer body, 3 chocks, 4 balls, 5 wedge grooves, 6 dovetail grooves, 7 square catching groove 8 square 9 ball grooves of buckleing on 1 among the figure

The specific embodiment: the utility model is described in further detail below in conjunction with accompanying drawing:

Shown in Figure 1 is assembling drawing of the present utility model, Fig. 2 is that D-D is to topology view among Fig. 1, and as shown in the figure, tumbling-type beam hanger centralizer is made of last centralizer body 1, following centralizer body 2, the upper end of the lower end of last centralizer body 1, following centralizer body 2 has ball grooves 9, the ball of placing in the middle of the involutory back 4.Ball 4 has 4 centres that are evenly distributed on centralizer body 1, following centralizer body 2.Last centralizer body 1 has wedge groove 5 from middle dimidiation in the middle of the outside, and the inboard has dovetail groove 6, connects by dovetail groove 6 plug-in mountings between the two halves, and concrete structure is consulted Fig. 3, Fig. 4, and Fig. 5 is the upward view of Fig. 4.Following centralizer body 2 has wedge groove 5 from middle dimidiation in the middle of the outside, and the inboard has dovetail groove 6, and the concrete structure of following centralizer body 2 is consulted Fig. 7, Fig. 8, and Fig. 9 is the upward view of Fig. 8.Ball 4 half in the lower end of last centralizer body 1, second half is in the upper end of centralizer body 2 down.In the wedge groove 5 in the centralizer body outside, Figure 12 provided the structural representation of chock 3 about chock 3 was inserted into, and Figure 11 is the lateral plan of Figure 12.

Fig. 6 is an A-A place sectional view among Fig. 4, and the structural representation that recessed square catching groove 7 is arranged in the dovetail groove (pin thread) is provided among the figure, and this groove is opened in the dovetail groove 6 of last centralizer body inboard.Figure 10 is a B-B place sectional view among Fig. 8, and the structural representation of the square button 8 of dovetail groove (pin thread) internal projection is provided among the figure, and this button is opened in the dovetail groove of centralizer body inboard on second half.The groove that the position of square grooves, button in the dovetail groove 6 of following centralizer body 2, shape and last centralizer body leave, detain consistent.Last centralizer body 1, following centralizer body 2 are connected to form two semicircles by chock 3 plug-in mountings earlier, and two semicircles connect into an integral body by dovetail groove 6 plug-in mountings.Connecting the square catching groove 7 that is recessed into will be buckled together with square button 8 corresponding the coincideing of projection, its objective is and goes up centralizer body 1 and following centralizer body 2 displacements when preventing the sucker rod running.

Claims (3)

1, a kind of tumbling-type beam hanger centralizer is characterized in that: by last centralizer body (1), down centralizer body (2), constitute, last centralizer body (1), be placed with ball (4) in the middle of the centralizer body (2) down, form by chock (3) plug-in mounting between up and down; Last centralizer body (1) has wedge groove (5) from middle dimidiation in the middle of the outside, and the inboard has dovetail groove (6), connects by dovetail groove (6) plug-in mounting between the two halves; Following centralizer body (2) has wedge groove (5) from middle dimidiation in the middle of the outside, and the inboard has dovetail groove (6), connects by dovetail groove (6) plug-in mounting between the two halves.

2, tumbling-type beam hanger centralizer according to claim 1 is characterized in that: described going up in half inboard dovetail groove of centralizer body has recessed square catching groove (7), and protruding square button (8) is arranged in second half inboard dovetail groove.

3, tumbling-type beam hanger centralizer according to claim 1 is characterized in that: described have recessed square catching groove in half inboard dovetail groove of centralizer body down, and protruding square button is arranged in second half inboard dovetail groove.

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