CN212337214U

CN212337214U - Double-packing blowout prevention packing box

Info

Publication number: CN212337214U
Application number: CN202020947659.9U
Authority: CN
Inventors: 马宽让; 朱志学; 马鹏; 李社峰
Original assignee: Baoji Huite Petroleum Equipment Co ltd
Current assignee: Baoji Huite Petroleum Equipment Co ltd
Priority date: 2019-11-04
Filing date: 2020-05-29
Publication date: 2021-01-12
Anticipated expiration: 2030-05-29
Also published as: CN111622704A

Abstract

The utility model discloses a double packing blowout prevention packing box, which comprises a base connected with a three-way oil delivery pipe, wherein the base is connected with a lower packing pressing box, the lower packing pressing box is connected with an upper packing seat, the upper packing pressing box is connected on the upper packing seat, a lower packing is arranged in the base, an upper packing is arranged in the upper packing seat, a lower pressing cover for pressing the lower packing is arranged in the lower packing pressing box, an upper pressing cover for pressing the upper packing is arranged in the upper packing pressing box, the packing pressing box also comprises a polished rod channel for a polished rod to pass through the base, the lower packing pressing box, the upper packing pressing box, the lower packing, the upper packing, the lower pressing cover and the upper pressing cover, a cavity chamber communicated with the polished rod channel is arranged at the joint of the lower packing pressing box and the upper packing seat, a floating ball capable of blocking the polished rod channel is arranged in the cavity chamber, the upper packing and the lower packing improve the sealing effect, blowout prevention is combined into the packing box, and blowout prevention can be realized by the floating ball.

Description

Double-packing blowout prevention packing box

Technical Field

The utility model relates to a packing box of petroleum equipment, especially oil recovery equipment.

Background

The packing box is used for installing the packing, seals through the packing to the polished rod, prevents to recover oil in-process oil and reveals, and packing is only installed to traditional packing box, and sealed effect is not good, and the polished rod then can be along the packing box blowout if the interior oil of fracture drop into in addition, for avoiding the blowout, still need install in addition and prevent the blowout device for the installation is more complicated, the cost is improved, and traditional prevent that the blowout device similar valve can only manually closed moreover, and the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to solve the not enough among the prior art, provide a sealed effectual, can realize the packing box who prevents spouting, the utility model discloses the technical scheme who adopts is:

the utility model provides a packing box is prevented spouting by two packing, includes the base of being connected with tee bend defeated oil pipe the base on be connected with lower packing and press the box lower packing press and be connected with the packing root seat on be connected with packing root and press the box the base in be equipped with down the packing root seat in be equipped with the packing, be equipped with the lower gland that compresses tightly packing in shown lower packing presses the box be equipped with the last gland that compresses tightly the packing in the packing root presses the box, still including supplying the polished rod to pass base, lower packing and press the box, packing down, the polished rod passageway of upper gland and last gland the lower packing press box and upper packing root seat junction be equipped with the communicating cavity room with the polished rod passageway the cavity indoor be equipped with the floater that can stop up the polished rod passageway.

Further, the base include lower, splint, eccentric ball seat, bulb lower packing seat and bulb pressure mother, lower connection on tee bend oil pipe, splint and eccentric ball seat pass through bolted connection and press from both sides the lower tight fixed, bulb lower packing seat on be equipped with the bulb of arranging in the eccentric ball seat the bulb surface be equipped with the seal groove in be equipped with the sealing washer, lower include connecting portion and flange, the flange arrange in between splint and the eccentric ball seat flange and eccentric ball seat between be equipped with and be used for sealed metal winding pad splint the splint on be equipped with and enable the splint cover and establish the through-hole on connecting portion, the through-hole diameter be greater than the connecting portion external diameter, bulb pressure mother can be used for compressing tightly the bulb on the eccentric ball seat through threaded connection.

Furthermore, lubricating oil is filled in the hollow chamber, the hollow chamber is connected with an oil injection nozzle and an oil overflow pipe, the oil overflow pipe is provided with a faucet, and a tapered hole is arranged at the transition position of the hollow chamber and the polished rod channel.

Further, last packing and lower packing all be the toper setting in last packing seat and base, the less one end of last packing and lower packing diameter be close to the base, lower gland and last gland be located packing and the great one end of last packing diameter respectively.

Furthermore, the outer walls of the ball head lower disc root seat, the ball head pressing nut, the lower disc root pressing box, the upper disc root seat and the upper disc root pressing box are all provided with mounting holes for mounting the torque rod.

The packing box of the technical scheme is adopted, the packing is respectively arranged in the base and the upper disc base, the light rod is better sealed through two packing, a cavity chamber is arranged in the packing base to accommodate the floating ball, after the polished rod falls, the oil is flushed into the polished rod channel due to high pressure, the floating ball rises along with the liquid level in the cavity chamber, the polished rod channel is blocked to prevent blowout under the action of high pressure, the blowout preventer and the packing box are combined together, the installation space is reduced, and the cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The packing box shown in fig. 1 comprises a base, the base is connected to a three-way oil delivery pipe, a lower packing pressure box 1 is connected to the base, an upper packing seat 2 is connected to the lower packing pressure box 1, an upper packing pressure box 3 is connected to the upper packing seat 2, an upper packing 4b and a lower packing 4a are respectively arranged in the base and the upper packing seat 2, a lower gland 5 and an upper gland 6 for compressing the lower packing 4a and the upper packing 4b are respectively arranged in the lower packing pressure box 1 and the upper packing pressure box 3, a polish rod channel which penetrates through the base, the lower packing pressure box 1, the upper packing seat 2, the upper packing pressure box 3, the lower packing 4a, the upper packing 4b, the lower gland 5 and the lower gland 5 is arranged in the packing box, and a polish rod A moves up and down in the polish rod channel to realize oil pumping.

The base of the packing box comprises a lower base 9, a clamping plate 10, an eccentric ball seat 11, a ball lower packing base 12 and a ball pressing nut 13, wherein the lower base 9 is communicated with a three-way oil conveying pipe through threads, the eccentric ball seat 11 and the clamping plate 10 are connected through a bolt to clamp and fix the lower base 9, the lower base 9 comprises a connecting part 9-1 and a flange 9-2, the clamping part of the clamping plate 10 and the eccentric ball seat 11 is the flange 9-2, a metal winding pad 14 is arranged between the flange 9-2 and the eccentric ball seat 11 to play a sealing role, a through hole 10-1 is formed in the clamping plate 10, the diameter of the through hole 10-1 is larger than the outer diameter of the connecting part 9-1, therefore, when the position of a polished rod has deviation and the position of the eccentric ball seat 11 needs to be adjusted, the loose lower base of the bolt does not know that the adjustment can be realized only by moving the eccentric ball seat 11, and the gap, the ball head 12-1 is arranged on the ball head lower packing seat 12, the spherical groove matched with the ball head 12-1 is arranged on the eccentric ball seat 11, the ball head 12-1 is arranged in the spherical groove, the ball head 12-1 is provided with a sealing groove 12-2, a sealing ring 12-3 is arranged in the sealing groove 12-2, the ball head pressing nut 13 is connected to the eccentric ball seat 11 through threads, the ball head 12-1 can be pressed in the eccentric ball seat 11 and sealed through the sealing ring 12-3 after the ball head pressing nut 13 is screwed down, and the positions of the sealing ring 12-3 and the sealing groove 12-2 can also be arranged in the spherical groove of the eccentric ball seat 11. The ball head 12-1 can rotate freely under the state that the ball head is not compressed, so that the ball head lower packing base 12 can automatically adjust the angle to conform to the angle of the polished rod when the polished rod inclines at a small angle.

The lower ball head packing seat 12 is provided with a lower packing 4a part except a ball head 12-1 part, wherein the lower packing pressing box 1 is connected to the lower ball head packing seat 12 through threads, the lower pressing cover 5 and the lower packing pressing box 1 can be integrally designed or independently designed, the lower pressing cover 5 is pressed on the lower packing 4a when the lower packing pressing box 1 is screwed down, the packing expands in the radial direction through the pressing to achieve a sealing effect, the upper packing seat 2 is connected to the lower packing pressing box 1 through threads, the upper packing pressing box 3 and the upper pressing cover 6 are in the same form as the lower packing pressing box and the lower pressing cover 5 to achieve the pressing of the upper packing 4b, and the better sealing is achieved through the two packing. Go up packing 4b and lower packing 4a simultaneously and all adopt the toper structure to arrange in bulb lower packing seat 12 and upper packing seat 2, all set up the bell mouth in bulb lower packing seat 12 and upper packing seat 2 promptly and set up the packing, be the less one end of conical upper packing 4b and lower packing 4a diameter towards the base, go up

gland

6 and 5 voltage-sharing of lower gland in the great one end of upper packing 4b and lower packing 4a diameter, it is better to compress tightly the packing process like this and make the packing draw close the seal to central polished rod position.

Produce the condition that the polished rod fracture dropped very easily among the polished rod practical process, at this moment the polished rod passageway in the packing box does not have the polished rod cooperation to realize sealing, oil will outwards spray through the polished rod passageway under the pressure effect, in order to avoid such things to take place, press box 1 and last disk root seat 2 junction to be provided with cavity room 7 at lower packing, cavity room 7 is with the polished rod passageway communicating (actually be a part of polished rod passageway, only leave sufficient accommodation space), be equipped with floater 8 in cavity room 7, oil dashes into cavity room 7 when the polished rod drops, the polished rod passageway is blockked up along with the floater that rises on the liquid level begins the come-up, and the shutoff of floater 8 to the polished rod passageway realizes sealedly more tightly under the pressure effect. In order to enable the floating ball 8 to be centered with the polish rod channel for sealing, a tapered hole 7-1 is arranged at the transition part of the polish rod channel and the hollow chamber 7, so that the floating ball 8 can be centered with the polish rod channel along the tapered hole 7-1 for sealing. Because the polished rod can produce the friction between oil pumping in-process and packing, be filled with lubricating oil in cavity room 7 for avoiding the friction damage, the reciprocal in-process of polished rod realizes lubricated through lubricating oil like this, for the convenience to pouring into lubricating oil in cavity room 7, connect oiling mouth 15 on cavity room 7, avoid cavity room 7 internal pressure too big simultaneously, still be connected with oil spilling pipe 16 on cavity room 7, set up the tap on oil spilling pipe 16 and be used for the draining.

Because the connection between bulb lower plate base 12, bulb gland 13, lower plate root pressure box 1, upper plate root base 2 and upper plate root pressure box 3 all passes through threaded connection, for easy to assemble, all be equipped with mounting hole 17 on bulb lower plate base 12, bulb gland 13, lower plate root pressure box 1, upper plate root base 2 and the upper plate root pressure box 3 outer wall, install moment pole B and just can easily realize installing and dismantling in mounting hole 17.

Claims

1. The utility model provides a packing box is prevented spouting by two packing, includes the base of being connected with tee bend oil pipe the base on be connected with lower packing and press box (1) lower packing press box (1) on be connected with hanging wall root seat (2) on be connected with hanging wall root and press box (3), its characterized in that: the base in be equipped with down packing (4a) last packing (4b) is equipped with in last packing seat (2) be equipped with in shown lower packing pressure box (1) and compress tightly lower gland (5) of packing (4a) last packing (4b) be equipped with in last packing pressure box (3) and compress tightly last gland (6) of packing (4b), still including supplying the polished rod to pass base, lower packing pressure box (1), last packing seat (2), last packing pressure box (3), packing (4a) down, last packing (4b), gland (5) and last gland (6) the polished rod passageway lower packing pressure box (1) and last packing seat (2) junction be equipped with communicating cavity room (7) with the polished rod passageway cavity room (7) in be equipped with the floater (8) that can block up the polished rod passageway.

2. The double-packing blowout prevention packing box according to claim 1, characterized in that: the base comprises a lower base (9), a clamping plate (10), an eccentric ball seat (11), a ball lower packing base seat (12) and a ball pressing nut (13), the lower base (9) is connected to a three-way oil conveying pipe, the clamping plate (10) and the eccentric ball seat (11) are connected through bolts to clamp and fix the lower base (9), a ball (12-1) arranged in the eccentric ball seat (11) is arranged on the ball lower packing base seat (12), a sealing groove (12-2) is arranged on the surface of the ball (12-1), a sealing ring (12-3) is arranged in the sealing groove (12-2), the lower base (9) comprises a connecting part (9-1) and a flange (9-2), the flange (9-2) is arranged between the clamping plate (10) and the eccentric ball seat (11), and a metal winding pad (14) for sealing is arranged between the flange (9-2) and the eccentric ball seat (11), the ball head pressing nut is characterized in that a through hole (10-1) which enables the clamping plate (10) to be sleeved on the connecting portion (9-1) is formed in the clamping plate (10), the diameter of the through hole (10-1) is larger than the outer diameter of the connecting portion (9-1), and the ball head pressing nut (13) is connected to the eccentric ball seat (11) through threads and can be used for pressing the ball head (12-1).

3. The double-packing blowout prevention packing box according to claim 1 or 2, wherein: the cavity chamber (7) is filled with lubricating oil, the cavity chamber (7) is connected with an oil injection nozzle (15) and an oil overflow pipe (16), the oil overflow pipe (16) is provided with a tap, and a tapered hole (7-1) is arranged at the transition position of the cavity chamber (7) and a polished rod channel.

4. The double-packing blowout prevention packing box according to claim 1 or 2, wherein: go up packing (4b) and packing (4a) down and all be the toper setting in last packing root seat (2) and base, last packing (4b) and the less one end of packing (4a) diameter down be close to the base, lower gland (5) and last gland (6) be located packing (4a) and the great one end of last packing (4b) diameter down respectively.

5. The double-packing blowout prevention packing box according to claim 2, characterized in that: the outer walls of the ball head lower disc root seat (12), the ball head pressing nut (13), the lower disc root pressing box (1), the upper disc root seat (2) and the upper disc root pressing box (3) are all provided with mounting holes (17) for mounting the torque rod.