CN202832349U

CN202832349U - Stuffing box

Info

Publication number: CN202832349U
Application number: CN 201220550732
Authority: CN
Inventors: 景天豪; 彭耕; 王继军; 白明振; 张建勤; 郭国杰; 陈春富; 段保权
Original assignee: China Petroleum and Chemical Corp; Sinopec Henan Oilfield Branch Co No 2 Oil Production Plant
Current assignee: China Petroleum and Chemical Corp; Sinopec Henan Oilfield Branch Co No 2 Oil Production Plant
Priority date: 2012-10-25
Filing date: 2012-10-25
Publication date: 2013-03-27
Anticipated expiration: 2022-10-25

Abstract

The utility model relates to a stuffing box. According to the stuffing box, a butter cavity which is used for containing butter is formed in the middle of a box body of the stuffing box. When the stuffing box is used, the butter contained in the butter cavity is brought into other portions of the box body of the stuffing box along with reciprocating motion of a polished rod, the butter is all used for lubricating the motion of the polished rod in the box body of the stuffing box, and therefore usage rate of the butter is improved and the stuffing box is enabled to have better lubricating effect.

Description

Packing box

Technical field

The utility model relates to the well mouth of oil well technical field of sealing technology, relates in particular to a kind of packing box.

Background technology

At present, oil field machinery oil well well head all is equiped with the packing box for the sealing well mouth of oil well, but owing in the oil pumper running owing to feed flow deficiency or the not high reason of pump efficiency, often make oil pumper be in evacuated, at this moment, to be in dry condition between the polished rod that wears in the packing box and the packing, thereby so that packing is burned and causes the well mouth of oil well leakage of oil or spatter oil, cause the waste of crude oil, and the environment of periphery worked the mischief, thereby the maintainer need to change packing in the packing box often guaranteeing the normal operation of oil pumper, thereby so that the maintenance work of oil well waste time and energy, maintenance cost increases, and the production efficiency of oil pumper is reduced.

Application number is that the Chinese utility model patent of 200820023590.X discloses a kind of lubrication cooling packing kit, the box cupling of the end installing of this packing box and the junction of box body have additional butter box, thereby can under the drive of polished rod, flow in the packing box by the end from packing box so that be used for the butter of lubricated packing, thereby the packing in the packing box is played the purpose of lubrication cooling, but because polished rod moves in packing box and is the telescopic slide of reciprocation cycle, and butter box is in an end of the box body of packing box, thereby butter only has part to be brought in the box body of packing box by polished rod, thereby plays lubricated effect; Remainder is brought into the air from butter box by polished rod, along with the aerial heat radiation of polished rod is consumed, and then has caused the waste of butter, so that the consumption of butter increases, the cost for oil production of oil well improves.

The utility model content

The utility model proposes that a kind of butter consumption is few, the packing box of high lubricating effect.

The technical scheme of this packing box is as follows:

A kind of packing box, the box body that comprises the tubular that extends along the vertical direction, the gland that the box body upper end connects, in the box cupling that the box body lower end connects and the box body installing be used for packing is pressed on hold-down mechanism in the box body, convex with appear on the stage terrace and the leave from office terrace of annular on the inwall at the middle part of described box body, described appear on the stage terrace and leave from office terrace all have for pass for polished rod and with the endoporus of polished rod matched in clearance, described appearing on the stage is equiped with upper hold-down mechanism for packing being pressed between the two between terrace and the gland, be equiped with between described leave from office terrace and the box cupling for the lower hold-down mechanism that packing is pressed between the two, the described terrace of appearing on the stage, the inwall of leave from office terrace and box body between the two surrounds be used to the butter chamber that holds butter, offers the pouring orifice that is used for injecting butter in the butter chamber that is in position, butter chamber on the perisporium of described box body.

Be equiped with one way valve on the described pouring orifice.

Also offer the unloading port of flowing out in the butter chamber for butter of being used for that is in placement, butter chamber on the perisporium of described box body, be equiped be used to the plugging device that blocks pouring orifice in the described unloading port.

Described plugging device is for being connected to the plug in the described unloading port for coaxial threaded.

Described upper hold-down mechanism comprises along the bearing of trend straight-line guidance of box body and is assemblied in Glan in the inner chamber of box body end, described Glan have for pass for polished rod and with the endoporus of polished rod matched in clearance, be equiped with between described Glan and the gland for applying downward active force to Glan packing is pressed on Glan and the first holddown spring between the terrace of appearing on the stage.

Be equiped with between described the first holddown spring and the gland for the thrust bearing of correcting the axiality between upper hold-down mechanism and the polished rod, the two ends of described thrust bearing are separately fixed on gland and the first spring, described thrust bearing have for pass for polished rod and with the endoporus of polished rod matched in clearance.

Described thrust bearing is that model is 51207 thrust bearing.

Described lower hold-down mechanism comprises along the bearing of trend straight-line guidance of box body and is assemblied in spring base in the inner chamber of end of box body, offer on the described spring base for pass for polished rod and with the through hole of polished rod matched in clearance, be equiped with between described spring base and the box cupling for applying active force upwards to spring base packing is pressed on the second holddown spring between spring base and the leave from office terrace.

The utility model will be arranged on be used to the butter chamber that holds butter the middle part of the box body of packing box, thereby so that in use, butter in the butter chamber is brought into other parts of the box body of packing box along with the reciprocating motion of polished rod, so that butter is all changed the motion of polished rod in the box body of packing box for profit, thereby so that the raising of the utilization rate of butter, and make packing box have better lubricant effect.

Description of drawings

Fig. 1 is the structural representation of embodiment of the present utility model.

The specific embodiment

The embodiment of packing box of the present utility model: as shown in Figure 1, this packing box is by the box body 1 of the tubular that extends along the vertical direction, coaxial threaded is connected to gland 2 and the box cupling 3 at the two ends of box body 1 respectively, the upper hold-down mechanism 11 of box body 1 interior setting and lower hold-down mechanism 12 consist of, wherein, convex with on the inwall at the middle part of box body 1, leave from office terrace 1-11,1-12, on, leave from office terrace 1-11,1-12 is the end face on the convex annular edge that is convexly equipped with on the inwall of box body 1, two step surface 1-11,1-12 all have for pass for polished rod and with the endoporus 1-2 of polished rod matched in clearance, two step surface 1-11,1-12 and be in two step surface 1-11, the inwall of the box body 1 between the 1-12 surrounds a butter chamber 1-3, and offer the 1-5 of unloading port that in the 1-3 of butter chamber, injects the pouring orifice 1-4 of butter and be used for flowing out for the butter in the butter chamber 1-3 of being used for that is in 1-3 position, butter chamber at the perisporium of box body 1, one way valve 4 is installed on the pouring orifice 1-4, be equipped with on the 1-5 of unloading port be used to the plugging device 5 that blocks the 1-5 of unloading port, this plugging device 5 is connected to plug in the unloading port for coaxial threaded.

Described upper hold-down mechanism 11 is assemblied in by the bearing of trend straight-line guidance along box body 1 to be equiped with for apply downward active force to Glan 6 between Glan 6, Glan 6 and the gland 2 in the inner chamber of box body 1 end and consists of with the first holddown spring 7 that packing is pressed on Glan 6 and appear on the stage between the terrace 1-11, wherein, Glan 6 have for pass for polished rod and with the endoporus 6-1 of polished rod matched in clearance; Be equiped with between the first holddown spring 7 and the gland 2 for the thrust bearing 8 of correcting the axiality between upper hold-down mechanism 11 and the polished rod, this thrust bearing 8 is 51207 thrust bearing for model, the two ends of thrust bearing 8 are separately fixed on gland 2 and the first spring 7, thrust bearing 8 have for pass for polished rod and with the endoporus of polished rod matched in clearance.

Described lower hold-down mechanism 12 is assemblied in by the bearing of trend straight-line guidance along box body 1 to be equiped with for apply active force upwards to spring base 9 between spring base 9, spring base 9 and the box cupling 3 in the inner chamber of end of box body 1 and consists of with the second holddown spring 10 that packing is pressed between spring base 9 and the leave from office terrace 1-12, wherein, offer on the spring base 9 for pass for polished rod and with the through hole 9-1 of polished rod matched in clearance.

In use, first packing is pressed between spring base 9 and the leave from office terrace 1-12 by the second holddown spring 10, then box cupling 3 coaxial threaded are connected to the end of box body 1, so that the packing of box body 1 lower end is locked in the box body 1, then in the upper end of box body 1 packing is installed successively, Glan 6, the first holddown spring 7, thrust bearing 8 and gland 2, so that box body 1 inner disc velamen is locked at the upper end of box body 1, then in the 1-3 of butter chamber, inject butter from pouring orifice 1-4, simultaneously, the in good time 1-5 of unloading port that opens is so that the butter in the 1-3 of butter chamber is an amount of to guarantee the butter in the butter chamber 1-3 from box body 1 interior outflow.

In the above-described embodiments, the hold-down mechanism at box body two ends is made of the first holddown spring and Glan and the second holddown spring and spring base respectively, in other embodiments, the hold-down mechanism at box body two ends also can be the Glan that is assemblied in the box body along the bearing of trend straight-line guidance of box body and consist of, corresponding, when the packing of installing in the box body was more, it is less that Glan stretches into the size of box body, otherwise opposite; The hold-down mechanism at box body two ends can also by holddown spring and Glan and spring base both one of combine.

In the above-described embodiments, two step surfaces are made of the end face on convex annular edge, and in other embodiments, convex annular is along also can be by replacements such as the back-up ring on the inwall that is fixed on box body, ring baffles; Or box body is mutually permanently connected by the tubular structure at the housing in butter chamber, two ends, butter chamber and forms, thereby so that convex annular along being replaced by the two ends shell wall of the housing in butter chamber.

Claims

1. packing box, the box body that comprises the tubular that extends along the vertical direction, the gland that the box body upper end connects, in the box cupling that the box body lower end connects and the box body installing be used for packing is pressed on hold-down mechanism in the box body, it is characterized in that: appear on the stage terrace and the leave from office terrace that convex with annular on the inwall at the middle part of described box body, described appear on the stage terrace and leave from office terrace all have for pass for polished rod and with the endoporus of polished rod matched in clearance, described appearing on the stage is equiped with upper hold-down mechanism for packing being pressed between the two between terrace and the gland, be equiped with between described leave from office terrace and the box cupling for the lower hold-down mechanism that packing is pressed between the two, the described terrace of appearing on the stage, the inwall of leave from office terrace and box body between the two surrounds be used to the butter chamber that holds butter, offers the pouring orifice that is used for injecting butter in the butter chamber that is in position, butter chamber on the perisporium of described box body.

2. packing box according to claim 1 is characterized in that: be equiped with one way valve on the described pouring orifice.

3. packing box according to claim 1, it is characterized in that: also offer the unloading port of flowing out in the butter chamber for butter of being used for that is in placement, butter chamber on the perisporium of described box body, be equiped be used to the plugging device that blocks pouring orifice in the described unloading port.

4. packing box according to claim 3 is characterized in that: described plugging device is connected to plug in the described unloading port for being used for coaxial threaded.

5. packing box according to claim 1, it is characterized in that: described upper hold-down mechanism comprises along the bearing of trend straight-line guidance of box body and is assemblied in Glan in the inner chamber of box body end, described Glan have for pass for polished rod and with the endoporus of polished rod matched in clearance, be equiped with between described Glan and the gland for applying downward active force to Glan packing is pressed on Glan and the first holddown spring between the terrace of appearing on the stage.

6. packing box according to claim 4, it is characterized in that: be equiped with between described the first holddown spring and the gland for the thrust bearing of correcting the axiality between upper hold-down mechanism and the polished rod, the two ends of described thrust bearing are separately fixed on gland and the first spring, described thrust bearing have for pass for polished rod and with the endoporus of polished rod matched in clearance.

7. packing box according to claim 5, it is characterized in that: described thrust bearing is that model is 51207 thrust bearing.

8. packing box according to claim 1, it is characterized in that: described lower hold-down mechanism comprises along the bearing of trend straight-line guidance of box body and is assemblied in spring base in the inner chamber of end of box body, offer on the described spring base for pass for polished rod and with the through hole of polished rod matched in clearance, be equiped with between described spring base and the box cupling for applying active force upwards to spring base packing is pressed on the second holddown spring between spring base and the leave from office terrace.