CN202520266U

CN202520266U - Four-stage polished rod sealing device

Info

Publication number: CN202520266U
Application number: CN2011205528561U
Authority: CN
Inventors: 范礼成
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-26
Filing date: 2011-12-26
Publication date: 2012-11-07
Anticipated expiration: 2021-12-26

Abstract

The utility model relates to a four-stage polished rod sealing device, which comprises a four-way sealing device main body, a lower joint, a lower connecting pressing cap and a pressing cap, wherein the top end and the bottom end of the four-way sealing device main body are provided with fixed round nuts respectively; the inner sides of the two fixed round nuts are provided with sealing plungers; both the two fixed round nuts are provided with screw rods; the screw rod pass through the fixed round nuts, and are connected with the sealing plungers; a lower connecting pressing cap and an adjusting pressing cap are sleeved at the left end and the right end of the four-way sealing device main body respectively; a pressing cap is sleeved on the outer wall of the left end of the lower connecting pressing cap; the right side of the adjusting pressing cap is connected with the lower joint; and an eccentric disk fixed on the outer wall of the right end of the four-way sealing device main body is arranged inside the adjusting pressing cap. The four-stage polished rod sealing device disclosed by the utility model is reasonable in design, is sealed reliably, and can be aligned in any direction; the maximum eccentric distance can be adjusted by 13 millimeters, and the problem of leakage loss is solved by adopting planar offset; and a group of anti-spray parts is arranged, and lead screw propelling is adopted for the anti-spray parts, so that blowout can be prevented after screwing, and emptying is not required during replacement of a packing above.

Description

A kind of level Four polished rod sealer

Technical field

The utility model relates to a kind of level Four polished rod sealer.

Background technology

In the oil field operation,, sealer need be set at present in the bottom that lifts with polished rod for preventing to occur in the manufacturing process leakage of crude oil; But existing high pressure twin-stage polished rod sealer adopts the rotation tuningout, and can not aim at the polished rod center at an arbitrary position behind two tuningout part tuningouts, has only to rotate lower contact again and could adjust centering; During the adjustment lower contact,, can only just change for preventing to release; So it is cumbersome that adjustment is got up, and brought great inconvenience to the user.

The utility model content

For solving the problems of the technologies described above, the utility model provides a kind of level Four polished rod sealer simple in structure, easy to use.

The level Four polished rod sealer of the utility model; Comprise four-way sealer main body, lower contact, connect pressure cap and pressure cap down, the top and the bottom of said four-way sealer main body are respectively equipped with fixedly round nut, two fixedly the inboard of round nut be provided with sealed plunger; Two fixedly are equipped with screw rod on the round nut; Screw rod passes fixedly that round nut is connected with sealed plunger, and the left end of four-way sealer main body is socketed with down respectively with right-hand member and is connected pressure cap and regulates pressure cap, following connection pressure cap left end outer wall socket pressure cap; The right side of regulating pressure cap connects lower contact, and the inside of regulating pressure cap is provided with the eccentric disc that is fixed on the four-way sealer main body right-hand member outer wall.

The level Four polished rod sealer of the utility model is provided with the first taper packing in the internal cavities of said four-way sealer main body left end, the first taper packing with under be connected and be provided with down pressure ring between the pressure cap, the inwall place of following pressure ring is provided with and sets upright grommet.

The level Four polished rod sealer of the utility model; The said internal cavities place that connects the pressure cap left end down is provided with the second taper packing; The left side of the second taper packing is provided with the braiding asbestos packing, and the left side of braiding asbestos packing is provided with upper press ring, and the right side of braiding asbestos packing is provided with gasket ring.

The level Four polished rod sealer of the utility model is provided with some handle installing holes near the middle part on the outer wall of the said pressure cap of connection down.

The level Four polished rod sealer of the utility model is provided with some rotation handgrips near the left end place on the outer wall of said pressure cap.

The level Four polished rod sealer of the utility model, the junction of said sealed plunger and four-way sealer main body is through being fixed on the O-ring seals sealing on the sealed plunger.

Compared with prior art the beneficial effect of the utility model is: the level Four polished rod sealer of the utility model is reasonable in design; Seal reliably, stability is strong, but but the above any direction adjusting of pressure-bearing 16MPa; The adjustable 13mm of maximum eccentricity has adopted planar offset not have the leakage problem; Increased by one group of blowout prevention part, the pusher seal of screw mandrel has partly been adopted in blowout prevention, can prevent blowout after screwing, and then without emptying, has good blowout prevention performance when changing three grades of top packings; Product has increased by one again and has set upright grommet in design, be beneficial to setting upright of polished rod, reduces the wearing and tearing of polished rod, is a kind of very desirable product.

Description of drawings

Fig. 1 is the structural representation of the described a kind of level Four polished rod sealer of the utility model embodiment.

Among the figure:

1, four-way sealer main body; 2, lower contact; 3, connect pressure cap down; 4, pressure cap; 5, fixing round nut; 6, sealed plunger; 7, screw rod; 8, regulate pressure cap; 9, eccentric disc; 10, the first taper packing; 11, following pressure ring; 12, set upright grommet; 13, the second taper packing; 14, braiding asbestos packing; 15, upper press ring; 16, gasket ring; 17, rotate handgrip; 18, O-ring seals.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.

As shown in Figure 1, a kind of level Four polished rod sealer comprises four-way sealer main body 1, lower contact 2, connects pressure cap 3 and pressure cap 4 down; The top of said four-way sealer main body 1 and bottom are respectively equipped with fixedly round nut 5; Two fixedly the inboard of round nut 5 be provided with 6, two of sealed plungers and fixedly be equipped with screw rod 7 on the round nut 5, screw rod 7 passes fixedly that round nut 5 is connected with sealed plunger 6; The left end of four-way sealer main body 1 is socketed with down respectively with right-hand member and is connected pressure cap 3 and regulates pressure cap 8; Under connect pressure cap 3 and be connected with production wellhead, following connection pressure cap 3 left end outer wall socket pressure caps 4, the right side of regulating pressure cap 8 connects lower contact 2; The inside of regulating pressure cap 8 is provided with the eccentric disc 9 that is fixed on the four-way sealer main body 1 right-hand member outer wall, and eccentric disc 9 is used to regulate the center of aiming at polished rod.

The level Four polished rod sealer of the utility model, be provided with in the internal cavities of said four-way sealer main body 1 left end the first taper packing, 10, the first taper packings 10 with under be connected and be provided with down pressure ring 11 between the pressure cap 3, the inwall place of following pressure ring 11 is provided with and sets upright grommet 12.

The level Four polished rod sealer of the utility model; The said internal cavities place that connects pressure cap 3 left ends down is provided with the second taper packing 13; The left side of the second taper packing 13 is provided with braiding asbestos packing 14; The left side of braiding asbestos packing 14 is provided with upper press ring 15, and the right side of braiding asbestos packing 14 is provided with gasket ring 16.

The level Four polished rod sealer of the utility model is provided with some handle installing holes near the middle part on the outer wall of the said pressure cap 3 of connection down.

The level Four polished rod sealer of the utility model is provided with some rotation handgrips 17 near the left end place on the outer wall of said pressure cap 4.

The level Four polished rod sealer of the utility model, said sealed plunger 6 seals through the O-ring seals 18 that is fixed on the sealed plunger 6 with the junction of four-way sealer main body 1.

The level Four polished rod sealer of the utility model is reasonable in design, seals reliably, and stability is strong, but but the above any direction adjusting of pressure-bearing 16MPa, the adjustable 13mm of maximum eccentricity has adopted planar offset not have the leakage problem; Increased by one group of blowout prevention part (screw rod 7), the pusher seal of screw mandrel has partly been adopted in blowout prevention, can prevent blowout after screwing, and then without emptying, has good blowout prevention performance when changing three grades of top packings; Product has increased by one again and has set upright grommet in design, be beneficial to setting upright of polished rod, reduces the wearing and tearing of polished rod, is a kind of very desirable product.

The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and modification, these improvement and modification also should be regarded as the protection domain of the utility model.

Claims

1. level Four polished rod sealer; Comprise four-way sealer main body (1), lower contact (2), connect pressure cap (3) and pressure cap (4) down; It is characterized in that: the top of said four-way sealer main body (1) and bottom are respectively equipped with fixedly round nut (5); Two fixedly the inboard of round nut (5) be provided with sealed plunger (6), two fixedly are equipped with screw rod (7) on the round nut (5), screw rod (7) passes fixedly that round nut (5) is connected with sealed plunger (6); The left end of four-way sealer main body (1) is socketed with down respectively with right-hand member and is connected pressure cap (3) and regulates pressure cap (8); Under connect pressure cap (3) left end outer wall socket pressure cap (4), the right side of regulating pressure cap (8) connects lower contact (2), the inside of regulating pressure cap (8) is provided with the eccentric disc (9) that is fixed on four-way sealer main body (1) the right-hand member outer wall.

2. level Four polished rod sealer according to claim 1; It is characterized in that: be provided with the first taper packing (10) in the internal cavities of said four-way sealer main body (1) left end; The first taper packing (10) with under be connected and be provided with down pressure ring (11) between the pressure cap (3), the inwall place of following pressure ring (11) is provided with and sets upright grommet (12).

3. level Four polished rod sealer according to claim 1; It is characterized in that: the said internal cavities place that connects pressure cap (3) left end down is provided with the second taper packing (13); The left side of the second taper packing (13) is provided with braiding asbestos packing (14); The left side of braiding asbestos packing (14) is provided with upper press ring (15), and the right side of braiding asbestos packing (14) is provided with gasket ring (16).

4. according to claim 1 or 3 described level Four polished rod sealers, it is characterized in that: be provided with some handle installing holes near the middle part on the outer wall of said connection pressure cap (3) down.

5. level Four polished rod sealer according to claim 1 is characterized in that: be provided with some rotation handgrips (17) near the left end place on the outer wall of said pressure cap (4).

6. level Four polished rod sealer according to claim 1 is characterized in that: said sealed plunger (6) seals through the O-ring seals (18) that is fixed on the sealed plunger (6) with the junction of four-way sealer main body (1).