CN212716522U

CN212716522U - Packing box

Info

Publication number: CN212716522U
Application number: CN202021649262.8U
Authority: CN
Inventors: 马鹏; 马宽让; 朱志学; 妙林科
Original assignee: Baoji Huite Petroleum Equipment Co ltd
Current assignee: Baoji Huite Petroleum Equipment Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-03-16
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses a packing box, include and be connected the base that can realize the tuningout accent to one side with the defeated oil pipe of tee bend, still including the packing seat, be equipped with the packing in the packing seat on be connected with the packing gland that compresses tightly the packing base and packing seat between be equipped with the seal valve on be connected with the valve casing include the seal valve the valve casing in slide and be provided with a pair of valve body, each the valve body on be fixed with and press from both sides tight polished rod and sealed valve block the valve casing on be equipped with the valve rod that drives the valve body and remove in the valve casing. The packing box adopting the structure can be replaced only by closing the sealing valve when the packing is replaced, the packing does not need to be replaced after pressure relief, the operation is convenient and simple, the sealing valve is arranged on the base and can be adjusted along with the base in an inclined mode, the position of the sealing valve when the base is adjusted according to the position and the angle of the polished rod is adjusted accordingly, the polished rod is prevented from being abraded by the sealing valve, and the service life is prolonged.

Description

Packing box

Technical Field

The invention relates to oil exploitation equipment, in particular to a packing box.

Background

The packing box is used for installing the packing, the polished rod is sealed through the packing, oil leakage in the oil extraction process is prevented, the packing can be worn and sealed after long-term use, the packing needs to be replaced, pressure relief is needed firstly when the packing is replaced in the traditional packing, blowout caused by pressure in a well when the packing is replaced is prevented, and therefore efficiency is low when the packing is replaced; and the polish rod can be deviated from the center of the wellhead, and crude oil is easy to leak due to pressure relief.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides the packing box which can realize deviation adjustment and inclination adjustment, can separate underground pressure and conveniently and quickly replace a packing, and the technical scheme adopted by the invention is as follows:

the utility model provides a packing box, includes and is connected the base that can realize the tuningout with defeated oil pipe of tee bend, still including the packing seat in be equipped with the packing seat on be connected with the packing gland that compresses tightly the packing base and packing seat between be equipped with the seal valve on be connected with the seal valve include the valve casing in slide and be provided with a pair of valve body, each the valve body on be fixed with and press from both sides tight polished rod and sealed valve block the valve casing on be equipped with the valve rod that drives the valve body and remove in the valve casing.

The packing gland on prevent spouting the cap prevent spouting the chamber between prevent spouting cap and the packing gland prevent spouting the intracavity be equipped with and block up the floater of polished rod passageway prevent spouting the cap and the packing gland in be equipped with and prevent spouting the communicating bell mouth in chamber, the packing gland in still be equipped with the pressure disk that compresses tightly the packing.

Further, the valve casing include the casing of being connected with base and packing seat the casing both ends be connected with the valve cap, the valve rod pass through the screw thread and be connected with the valve cap and extend to in the casing, the valve rod be located tip and valve body swing joint in the casing the valve cap on be equipped with the crescent piece that prevents the valve rod and drop, valve body and casing between be equipped with the sealing member.

Furthermore, a pair of guide pins are arranged on the valve casing, and guide grooves matched with the guide pins are arranged on each valve body.

Further, the base comprises a lower seat, a clamping plate, an eccentric ball seat, a ball head piece and a ball head pressing nut, the lower seat is connected with a three-way oil delivery pipe, the clamping plate is connected with the eccentric ball seat through a bolt to clamp and fix the lower seat, the ball head piece comprises a ball head arranged in the eccentric ball seat, a connecting piece connected with the valve casing is arranged on the ball head, a sealing groove is arranged on the surface of the ball head, a sealing ring is arranged in the sealing groove, the lower seat comprises a connecting part and a flange, the flange is arranged between the clamping plate and the eccentric ball seat, a metal winding pad for sealing is arranged between the flange and the eccentric ball seat, a through hole which can lead the clamping plate to be sleeved on the connecting part is arranged on the clamping plate, the diameter of the through hole is larger than the outer diameter of the connecting part, and the ball head pressing nut is connected to the eccentric ball seat through threads and can be used for pressing the ball head.

The packing box adopting the structure can be replaced only by closing the sealing valve when the packing is replaced, the packing is not required to be replaced after pressure is released, the operation is convenient and simple, the sealing valve is arranged on the base and can be adjusted along with the base in an offset and inclination manner, the position of the sealing valve of the base is adjusted when the position and the angle of the polished rod are adjusted, the polished rod can be prevented from being interfered by the sealing valve, the polished rod is prevented from being abraded by the sealing valve, and the service life is prolonged.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Detailed Description

The packing box shown in figure 1 comprises a base which is connected with a three-way oil conveying pipe and can be used for deviation adjustment and inclination adjustment aiming at the position of a polished rod in a wellhead, a packing seat 1, a packing 2 arranged in the packing seat 1, a packing gland 3 which is used for compressing the packing 2 and connected with the packing seat 1, and a sealing valve arranged between the base and the packing seat 1, wherein the sealing valve can seal an oil pipe to separate pressure in a well from the packing, the sealing valve does not need to be closed only when the packing is replaced, the space where the packing is located is separated from the space in the well by matching the sealing valve with the polished rod, the sealing valve comprises a valve casing connected with the packing seat 1 and the base, a pair of valve bodies 4 are arranged in the valve casing in a sliding manner, a valve block 5 is arranged at one end, close to the polished rod A, of the valve body 4, the valve block 5 is made of rubber material and can realize sealing, a, the valve rod 6 can drive the valve body 4 to move to enable the valve blocks 5 to approach towards the polished rod, the valve blocks 5 extrude the polished rod to deform to achieve a sealing effect, and therefore underground pressure is cut off, the disk root does not need to be replaced after underground pressure relief, the sealing valve is located between the base and the packing seat 1, the sealing valve is located between the base and the packing seat, the position of the polished rod in a wellhead is adjusted through the base, the sealing valve is adjusted along with the whole movement of the packing box all the time, and abrasion of the sealing valve after deviation adjustment of the polished rod is avoided.

The specific valve casing comprises a casing 12 and a valve cap 13, the casing 12 is connected with a packing seat 1 and a base, the valve cap 13 is connected with two ends of the casing 12 through threads, a sealing part is arranged between the valve body 4 and the casing 12, a valve rod 6 is connected with the valve cap 13 through threads, one end of the valve rod 6 extends into the casing 12, one end of the valve rod 6 extending into the casing 12 is movably arranged on the valve body 4, the crescent 14 arranged on the valve body 4 prevents the valve rod 6 from separating from the valve body 4, the valve body 4 can be pushed to move in the shell 12 by rotating the valve rod 6, the valve rod 6 controls the valve sheet 5 to combine to realize sealing, in order to ensure that the valve body 4 moves along a specified straight line in the shell 12 to prevent deviation, a guide pin 15 is provided on the housing 12, while a guide groove 16 is provided on the valve body 4, the guide pin 15 is placed in the guide groove 16, the guide groove 16 moves along a set path by the guide pin 15 when the valve body 4 moves.

The packing box can be further provided with a blowout prevention structure, the packing gland 3 is connected with a blowout prevention cap 7, a blowout prevention cavity 8 is arranged between the blowout prevention cap 7 and the packing gland 3, a floating ball 9 is arranged in the blowout prevention cavity 8, when a polished rod is broken and drops, the polished rod channel of the blowout prevention cap 7 is blocked by the high-pressure oil falling floating ball 9 in a jacking mode to realize blowout prevention, in order to enable the floating ball 9 to quickly and accurately block the polished rod channel opening of the blowout prevention cap 7, tapered holes 10 are arranged on the blowout prevention cap 7 and the packing gland 3, the tapered holes 10 are components of the blowout prevention cavity 8, the floating ball 9 is arranged in the cavity, polished rod activities are enabled not to interfere with polished rod activities at ordinary times, and the floating ball 9 floats upwards along the tapered holes to block the polished rod. The softening oil is filled in the blowout prevention cavity 8, so that lubrication can be provided for the polish rod and the packing, and the service life is prolonged.

Packing gland 3 is arranged in compressing tightly packing 2 in packing seat 1 in above-mentioned structure, can also set up pressure disk 11 between packing gland 3 and packing 2 and be used for extrudeing packing 2, and this pressure disk 11 can set up to a whole spare part easy to assemble that reduces with packing gland 3 certainly.

The base in the structure comprises a lower seat 17, a clamping plate 18, an eccentric ball seat 19, a ball head piece and a ball head pressing nut 20, wherein the lower seat 17 is connected with a three-way oil conveying pipe, the clamping plate 18 and the eccentric ball seat 19 are connected and clamped and fixed through bolts to the lower seat 17, the ball head piece comprises a ball head 21 arranged in the eccentric ball seat 19, a connecting piece 22 connected with a valve shell is arranged on the ball head 21, the connecting piece 22 is connected with the ball head 21 through threads, the connecting piece 22 and the ball head 21 can also be designed into a whole, a sealing groove 23 is arranged on the surface of the ball head 21, a sealing ring 24 is arranged in the sealing groove 23, the lower seat 17 comprises a connecting part 17-1 and a flange 17-2, the flange 17-2 is arranged between the clamping plate 18 and the eccentric ball seat 19, a metal winding pad 25 for sealing is arranged between the flange 17-2 and the eccentric ball seat 19, a through, the diameter of the through hole 26 is larger than the outer diameter of the connecting part 17-1, and the ball head pressing nut 20 is connected to the eccentric ball seat 19 through threads and can be used for pressing the ball head 21.

Claims

1. The utility model provides a packing box, includes and is connected the base that can realize the tuningout with defeated oil pipe of tee bend, still including packing seat (1) in be equipped with packing (2) packing seat (1) on be connected with packing gland (3) that compress tightly packing (2), its characterized in that: base and packing seat (1) between be equipped with the seal valve on be connected with the seal valve include the valve casing in slide and be provided with a pair of valve body (4), each valve body (4) on be fixed with and press from both sides tight polished rod (A) and sealed valve block (5) the valve casing on be equipped with valve rod (6) that drive valve body (4) in the valve casing removal.

2. The packing kit of claim 1, wherein: packing gland (3) on prevent spouting cap (7) prevent spouting between cap (7) and packing gland (3) and be equipped with and prevent spouting chamber (8) prevent spouting the floater (9) that are equipped with in chamber (8) and can block up polished rod (A) passageway prevent spouting cap (7) and packing gland (3) all be equipped with prevent spouting communicating bell mouth (10) in chamber (8) packing gland (3) in still be equipped with pressure disk (11) that compress tightly packing (2).

3. The packing kit of claim 1, wherein: valve casing include casing (12) of being connected with base and packing seat (1) casing (12) both ends be connected with valve cap (13), valve rod (6) be connected through screw thread and valve cap (13) and extend to in casing (12), valve rod (6) tip and valve body (4) swing joint that are located casing (12) valve cap (13) on be equipped with crescent moon piece (14) that prevent valve rod (6) and drop, valve body (4) and casing (12) between be equipped with the sealing member.

4. A packing kit as defined in claim 1, 2 or 3, wherein: the valve casing is provided with a pair of guide pins (15), and each valve body (4) is provided with a guide groove (16) matched with the guide pin (15).

5. The packing kit of claim 1, wherein: the base comprises a lower base (17), a clamping plate (18), an eccentric ball seat (19), a ball head piece and a ball head pressing nut (20), the lower base (17) is connected to a three-way oil conveying pipe, the clamping plate (18) and the eccentric ball seat (19) are connected through bolts to clamp and fix the lower base (17), the ball head piece comprises a ball head (21) arranged in the eccentric ball seat (19), a connecting piece (22) connected with a valve casing is arranged on the ball head (21), a sealing groove (23) is arranged on the surface of the ball head (21), a sealing ring (24) is arranged in the sealing groove (23), the lower base (17) comprises a connecting portion (17-1) and a flange (17-2), the flange (17-2) is arranged between the clamping plate (18) and the eccentric ball seat (19), a metal winding pad (25) for sealing is arranged between the flange (17-2) and the eccentric ball seat (19), the ball head pressing nut is characterized in that a through hole (26) which enables the clamping plate (18) to be sleeved on the connecting portion (17-1) is formed in the clamping plate (18), the diameter of the through hole (26) is larger than the outer diameter of the connecting portion (17-1), and the ball head pressing nut (20) is connected to the eccentric ball seat (19) through threads and can be used for pressing the ball head (21).