CN210264614U

CN210264614U - Pumping unit wellhead anti-eccentric packing box

Info

Publication number: CN210264614U
Application number: CN201921140062.7U
Authority: CN
Inventors: 胡建新; 刘长青; 郭文波; 刘长辉
Original assignee: Bazhou Yajie Petroleum Technology Co Ltd
Current assignee: Bazhou Yajie Petroleum Technology Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-04-07
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses a packing box is prevented eccentric wear by beam-pumping unit well head, including root box body and well head connector, the inboard fixedly connected with locating frame of root box body, the inboard of locating frame is provided with the sliding tray, and the inboard sliding connection of sliding tray has the lifting circle frame, and the upper end welding of lifting circle frame has the spacing ring, and the upper end butt of spacing ring has a root dish, and the upper end butt of root dish has the gland, and the upper end bolted connection of root box body has a root dish to press the cap, is provided with the spring between the inner wall of lifting circle frame and sliding tray. This kind of beam-pumping unit well head anti-eccentric packing box, when needing to be changed the root dish, lift root dish pressure cap along root box body spiral off, then the gland loses the location and can follow root box body upper end and take out, then can upwards promote the lifting circle frame along the sliding tray through the elasticity of spring and make the spacing ring upwards reach the root dish upwards to support out along root box body to this makes things convenient for the change of root dish.

Description

Pumping unit wellhead anti-eccentric packing box

Technical Field

The utility model relates to an oil field machinery technical field specifically is a packing box is prevented eccentric wear by beam-pumping unit well head.

Background

The packing box is a sealing device of a polish rod of the oil pumping unit, and a packing which is used for penetrating through the polish rod is filled in the packing box so as to seal an annular space between an oil pipe and the polish rod. However, as the production of oil fields is carried out, many oil wells are influenced by geological factors, installation factors, pipeline deflection and the like, so that the well mouths of the oil wells are deflected, the polished rods and the packing boxes are not concentric, packing and polished rods are seriously abraded in one direction, the well mouths are easy to leak, leak oil and pollute the environment, and potential safety hazards are caused by the leakage of oil gas. In order to overcome the problems, the packing and the polish rod must be frequently replaced, time and labor are wasted, and the cost of oil field exploitation operation is increased. It is therefore desirable to provide an axially adjustable packing box to coincide with the axis of the polished rod to reduce or avoid one-way eccentric wear of the packing box and the polished rod.

Packing in the packing box seals through gland downward pressure packing box's inside and polished rod contact, when needing to be changed, because the packing surface hugs closely the inside that packing box inner wall is located the packing box, it is more troublesome when taking out like this, and prior art provides the structure of adjustable packing box more complicated and the cost of manufacture is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pumping unit well head anti-bias wearing packing box to solve the inconvenient problem of root disc change.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pumping unit well head eccentric wear prevention packing box, includes root box body and well head connector, the inboard fixedly connected with locating frame of root box body, the inboard of locating frame is provided with the sliding tray, the inboard sliding connection of sliding tray has the lifting circle frame, the upper end welding of lifting circle frame has the spacing ring, the upper end butt of spacing ring has the root dish, the upper end butt of root dish has the gland, the upper end bolted connection of root box body has root dish to press the cap, be provided with the spring between the inner wall of lifting circle frame and sliding tray.

Preferably, the lower end of the root box body is provided with a connecting disc, and the lower surface of the connecting disc is provided with a positioning bolt.

Preferably, the upper end of the inlet connector is provided with an adjusting disc, the surface of the adjusting disc is provided with a reserved opening, a positioning bolt is inserted into the inner side of the reserved opening, and the nut of the positioning bolt is upwards abutted to the adjusting disc.

Preferably, the lower surface of connection pad is provided with sealed the pad, and the lower surface butt of sealed pad has the adjustment disk.

Compared with the prior art, the beneficial effects of the utility model are that: according to the wellhead anti-eccentric-wear packing box of the oil pumping unit, firstly, when a root disc needs to be replaced, the root disc pressing cap is spirally detached along the root box body, then the pressing cap loses positioning and can be taken out from the upper end of the root box body, and then the lifting round frame is pushed upwards along the sliding groove through the elastic force of the spring so that the limiting ring upwards and the root disc upwards prop out along the root box body, so that the root disc is convenient to replace; second, when the polished rod takes place the skew and needs to adjust root box body position, not hard up positioning bolt's positioning nut promotes root box body and makes positioning bolt can change the position of root box body along reserving the mouth on the adjusting disk surface to this position of adjusting root box body.

Drawings

FIG. 1 is a sectional view of the overall structure of the present invention;

FIG. 2 is a schematic view of the positioning frame, the lifting round frame and the limiting ring of the present invention;

fig. 3 is a diagram illustrating an adjusting dial of the present invention;

fig. 4 is a schematic view of the lower surface of the connection pad of the present invention.

In the figure: 1 box body, 11 connection discs, 12 positioning bolts, 2 disc pressing caps, 3 wellhead connectors, 31 adjusting discs, 32 reserved ports, 4 pressing covers, 5 discs, 6 positioning frames, 61 sliding grooves, 62 springs, 63 lifting circular frames, 64 limiting rings and 7 sealing gaskets.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1, an anti-eccentric packing box for a well head of an oil pumping unit comprises a root box body 1 and a well head connector 3, wherein a positioning frame 6 is fixedly connected to the inner side of the root box body 1, a sliding groove 61 is arranged on the inner side of the positioning frame 6, the positioning frame 6 is fixed on the surface of the root box body 1 through a bolt, a lifting round frame 63 is slidably connected to the inner side of the sliding groove 61, a limiting ring 64 is welded to the upper end of the lifting round frame 63, the limiting ring 64 is used for limiting the position of a root disc 5, the upper end of the limiting ring 64 is abutted against the root disc 5, a gland 4 is abutted against the upper end of the root disc 5, a root disc pressing cap 2 is bolted to the upper end of the root box body 1, the root disc pressing cap 2 abuts against the upper cover 4 downwards to enable the upper cover 4 to abut against the root disc 5 downwards to position the root disc 5, a spring 62 is arranged between the lifting round frame 63 and the inner wall of the sliding groove 61, and when the upper end of the root disc 5 loses positioning, the lifting round frame 63 can The inner wall of the body 1 moves upward.

Referring to fig. 3, a connecting plate 11 is disposed at the lower end of the root box body 1, and a positioning bolt 12 is disposed on the lower surface of the connecting plate 11.

Referring to fig. 1, 3 and 4, an adjusting plate 31 is disposed at an upper end of the inlet connector 3, a reserved opening 32 is disposed on a surface of the adjusting plate 31, a diameter of the reserved opening 32 is not smaller than a diameter of the positioning bolt 12, the diameter of the reserved opening 32 is not larger than a nut diameter of the positioning bolt 12, the positioning bolt 12 moves along the reserved opening 32 when the root box body 1 is pushed, so that a position of the root box body 1 is changed, then the positioning bolt 12 is abutted upwards against the adjusting plate 31 along the positioning bolt 12 to complete position adjustment, the positioning bolt 12 is inserted into an inner side of the reserved opening 32, and a nut of the positioning bolt 12 is abutted upwards against the adjusting plate 31.

Referring to fig. 1, a gasket 7 is disposed on a lower surface of the connecting plate 11, a regulating plate 31 is abutted on the lower surface of the gasket 7, and a joint between the connecting plate 11 and the regulating plate 31 is sealed by the gasket 7 abutting against the surface of the regulating plate 31 downward.

The utility model discloses when concrete implementation: when the root disc 5 needs to be replaced, the root disc pressing cap 2 is spirally detached along the upper end of the root box body 1, then the pressing cover 4 can be taken out from the upper end of the root box body 1 after losing the positioning, the lower end of the root disc 5 is abutted to the limiting ring 64, the limiting ring 64 is arranged at the upper end of the lifting circular frame 63, the spring 62 is arranged between the lifting circular frame 63 and the sliding groove 61, and then the lifting circular frame 63 is pushed upwards along the sliding groove 61 through the elastic force of the spring 62, so that the limiting ring 64 and the root disc 5 at the upper end of the limiting ring 64 are abutted upwards out along the root box body 1, and the root disc 5 is convenient to replace; when the polished rod takes place the skew and needs to adjust root box body 1 position, the positioning nut of not hard up positioning bolt 12, because the diameter of reserving mouthful 32 is greater than positioning bolt 12's diameter, promote root box body 1 and remove at adjusting disk 31, positioning bolt 12 of connection pad 11 lower surface can remove along the reserving mouthful 32 on adjusting disk 31 surface, can change root box body 1 axis position, with this position of adjusting root box body 1, this regulation structure is fairly simple, the nut on not hard up positioning bolt 12 surface can be adjusted root box body 1's position, the cost of manufacture has been practiced thrift in the time of convenient regulation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an eccentric wear packing box is prevented to beam-pumping unit well head, includes root box body (1) and well head connector (3), its characterized in that: inboard fixedly connected with locating frame (6) of root box body (1), the inboard of locating frame (6) is provided with sliding tray (61), the inboard sliding connection of sliding tray (61) has lifting circle frame (63), the upper end welding of lifting circle frame (63) has spacing ring (64), the upper end butt joint of spacing ring (64) has root disc (5), the upper end butt joint of root disc (5) has gland (4), the upper end bolted connection of root box body (1) has root disc to press cap (2), be provided with spring (62) between the inner wall of lifting circle frame (63) and sliding tray (61).

2. The anti-eccentric packing box of the pumping unit wellhead according to claim 1, characterized in that: the lower end of the root box body (1) is provided with a connecting disc (11), and the lower surface of the connecting disc (11) is provided with a positioning bolt (12).

3. The anti-eccentric packing box of the pumping unit wellhead according to claim 1, characterized in that: the upper end of the wellhead connector (3) is provided with an adjusting disc (31), the surface of the adjusting disc (31) is provided with a reserved opening (32), the inner side of the reserved opening (32) is inserted with a positioning bolt (12), and the nut of the positioning bolt (12) is upwards abutted with the adjusting disc (31).

4. The anti-eccentric packing box of the pumping unit wellhead according to claim 2, characterized in that: the lower surface of connection pad (11) is provided with sealed pad (7), and the lower surface butt of sealed pad (7) has adjusting disk (31).