CN116717211B - Self-sealing packing box - Google Patents
Self-sealing packing box Download PDFInfo
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- CN116717211B CN116717211B CN202311002303.2A CN202311002303A CN116717211B CN 116717211 B CN116717211 B CN 116717211B CN 202311002303 A CN202311002303 A CN 202311002303A CN 116717211 B CN116717211 B CN 116717211B
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- 238000012856 packing Methods 0.000 title claims abstract description 100
- 238000007789 sealing Methods 0.000 title claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 210000004907 gland Anatomy 0.000 claims abstract description 46
- 230000001105 regulatory effect Effects 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims description 25
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 19
- 238000005086 pumping Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 7
- 239000003129 oil well Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to the technical field of oilfield oil extraction equipment, and particularly discloses a self-sealing packing box, wherein a pressure regulating mechanism comprises a first telescopic piece and a second telescopic piece, the first telescopic piece is arranged along the radial direction of a polished rod, a first end of the first telescopic piece is abutted against the polished rod and moves along the length direction of the polished rod, a second end of the first telescopic piece is abutted against the inner side surface of an upper box body, the second telescopic piece is rotationally connected with the upper box body through a fixed shaft, the second end of the first telescopic piece drives the first end of the second telescopic piece to move along the length direction of the polished rod through a connecting rod, and the second end of the second telescopic piece is abutted against a gland; when the polish rod moves upwards, the second end of the second telescopic piece moves downwards, so that the pressure on the gland is increased; when the polish rod moves downwards, the second end of the second telescopic piece moves upwards, so that the pressure on the gland is reduced. The invention ensures the instantaneity and synchronism of the packing pressurization pressure adjustment, and avoids the problems of delay of the packing pressurization pressure adjustment and unreliable pressurization seal.
Description
Technical Field
The invention relates to the technical field of oilfield oil extraction equipment, in particular to a self-sealing packing box.
Background
The packing box is a polish rod sealing device of a wellhead of the pumping unit, is an important component for preventing petroleum from overflowing, is sleeved outside the polish rod of the pumping unit, is tightly attached to the outer wall of the polish rod, and mainly depends on radial expansion and polish rod enclasping of rubber packing through axial stress compression so as to play a role in sealing, the lower end of the packing box is fixed on the wellhead device, and the polish rod of the pumping unit moves up and down repeatedly relative to the packing box during pumping operation. In the field use process of the polish rod sealing device, the polish rod is continuously reciprocated up and down to generate friction with the packing, so that the rubber packing is seriously worn, the service life is short, even the well mouth is lost, the environment is polluted, the well needs to be frequently stopped for replacement and maintenance, the polish rod sealing device is difficult to take out and add completely due to the problems of narrow operation space, eccentric wear of the well mouth and the like, the replacement time can only be prolonged, the well opening time rate is reduced, the labor intensity is high, and the working efficiency is low.
The Chinese patent publication No. CN111305786B discloses an automatic packing polish rod sealer, wherein a lower sealing oil cavity is arranged in a packing box below a packing, an upper sealing oil cavity is formed by a piston gland, a hydraulic piston and the packing box in a surrounding mode and communicated with the lower sealing oil cavity, pressure oil in an oil well sequentially flows into the lower sealing oil cavity and the upper sealing oil cavity through a gap between the packing box and the polish rod, the pressure oil in the lower sealing oil cavity is conveniently introduced into the upper sealing oil cavity, the pressure oil directly acts on the upper surface of the hydraulic piston, the packing is pressurized and sealed by the hydraulic piston under the action of the pressure oil, and excessive abrasion to the packing in a manual pretightening force increasing mode is avoided. In the working process of the automatic packing polish rod sealer, packing pressurization pressure is from oil well pressure, pressurized oil needs to convey pressurized liquid in a lower sealing oil cavity into an upper sealing oil cavity on the upper part of a hydraulic piston through a liquid channel and acts on the hydraulic piston, and packing can be pressurized through the hydraulic piston, so that the pressurizing and sealing effects on the polish rod are realized; however, when the pressure oil does not reach the upper sealed oil cavity, the hydraulic piston does not have pressure to the packing, the packing pressure is delayed along with the oil well pressure adjustment, the risk that the pressure oil overflows from the packing exists, the follow-up pressurizing effect is affected, and the reliability is poor.
Disclosure of Invention
The invention provides a self-sealing packing box, which aims to solve the problems of delay in the pressurization pressure regulation of packing in the related art and insufficient reliability in pressurization sealing.
The invention discloses a self-sealing packing box which comprises an upper box body and a lower box body, wherein the upper box body and the lower box body are sleeved outside a polish rod, the upper box body and the lower box body are detachably connected, packing is arranged in the lower box body, the self-sealing packing box further comprises a pressure regulating mechanism, a gland, a first elastic piece and a pressing plug, the gland, the first elastic piece and the pressing plug are propped against each other in sequence from top to bottom and are sleeved outside the polish rod, and the bottom of the pressing plug is propped against the top of the packing; the pressure regulating mechanism comprises a first telescopic piece and a second telescopic piece, the first telescopic piece is arranged along the radial direction of the polish rod, the first end of the first telescopic piece is abutted against the polish rod and moves along the length direction of the polish rod, the second end of the first telescopic piece is abutted against the inner side surface of the upper box body, the second telescopic piece is rotationally connected with the upper box body through a fixed shaft, the second end of the first telescopic piece drives the first end of the second telescopic piece to move along the length direction of the polish rod through a connecting rod, and the second end of the second telescopic piece is abutted against the gland; when the polish rod moves upwards, the first end of the first telescopic piece is driven to move upwards, and the second end of the second telescopic piece moves downwards, so that the pressure on the gland is increased; when the polish rod moves downwards, the first end of the first telescopic piece is driven to move downwards, and the second end of the second telescopic piece moves upwards, so that the pressure on the gland is reduced.
Preferably, the number of the pressure regulating mechanisms is four, and the four pressure regulating mechanisms are uniformly distributed along the circumferential direction by taking the polished rod as the center; the pressure regulating mechanism further comprises an abutting piece, the first end of the first telescopic piece abuts against the polish rod through the abutting piece, the abutting piece is a roller, the roller rotates unidirectionally, and the roller rotates when moving downwards.
Preferably, the number of the first telescopic members is one, the number of the second telescopic members is two, and the two second telescopic members are symmetrically arranged on two sides of the first telescopic member; the first telescopic piece comprises a first telescopic sleeve rod and a first telescopic rod, one end of the first telescopic sleeve rod is abutted against the inner side surface of the upper box body, the other end of the first telescopic sleeve rod is movably sleeved with the first telescopic rod, and the first telescopic rod is fixedly connected with the abutting piece; the second telescopic part comprises a second telescopic sleeve rod and a second telescopic rod, one end of the second telescopic sleeve rod is movably connected with the first telescopic sleeve rod through a connecting rod, the second telescopic rod is movably sleeved at the other end of the second telescopic sleeve rod, the second telescopic rod is rotatably connected with the upper box body through a fixing shaft, and one end of the second telescopic rod is abutted to the gland.
Preferably, the first telescopic rod is sleeved with a second elastic piece, and the second elastic piece is abutted between the first telescopic sleeve rod and the first telescopic rod; the second telescopic rod is sleeved with a third elastic piece, and the third elastic piece is abutted between the second telescopic sleeve rod and the second telescopic rod.
Preferably, the packing box further comprises a lining, wherein the lining is sleeved between the lower box body and the packing, the plunger is sleeved on the lining, a boss is arranged on the inner peripheral side of the upper box body along the circumferential direction of the upper box body, and the outer edge of the plunger is matched with the boss; the bush has the edge the mounting groove that polished rod length direction set up, the mounting groove is followed bush circumference equipartition has two, the gland have with the mounting rod of mounting groove adaptation, the periphery side of gland is provided with the tooth.
Preferably, the device further comprises a deflection adjusting mechanism, wherein the deflection adjusting mechanism comprises a driving device, a transmission device, a controller, a deflection sensor and a deflection adjusting gear, the controller is respectively in communication connection with the driving device and the deflection sensor, the deflection sensor is used for detecting whether the polished rod is deflected, the driving device is connected with the transmission device, the driving device drives the transmission device, the transmission device is connected with the deflection adjusting gear, and the deflection adjusting gear is meshed with teeth on the outer periphery side of the gland; when the offset sensor detects that the polish rod is offset, a starting signal is sent to the driving device, and when the offset sensor detects that the polish rod is timing, a closing signal is sent to the driving device.
Preferably, the driving means comprises at least one of an electric motor, a hydraulic cylinder and a pneumatic cylinder, and the transmission means comprises a transmission gear.
Preferably, the offset adjusting gear is an incomplete gear, teeth are uniformly arranged on the outer peripheral side of the gland, or the offset adjusting gear is a complete gear, and teeth are arranged on the outer peripheral side part of the gland.
Preferably, the device further comprises a speed reducer, wherein the speed reducer is arranged between the driving device and the transmission device and is respectively connected with the driving device and the transmission device.
Preferably, the device further comprises a locking mechanism, wherein the locking mechanism comprises a baffle, a screw rod and a handle, the second end of the first telescopic piece is abutted against the inner side surface of the upper box body through the baffle, a threaded hole is formed in the side surface of the upper box body, one end of the screw rod is installed in the threaded hole and is abutted against the baffle, the other end of the screw rod is fixedly connected with the handle, and the handle is in a cross shape; the upper box body is connected with the lower box body in a threaded fit manner; the number of the locking mechanisms is two, and the two locking mechanisms are symmetrically arranged on two sides of the polish rod.
By adopting the technical scheme, the invention has the beneficial effects that: the pressure regulating mechanism is arranged between the polish rod and the packing, one end of the pressure regulating mechanism is driven to move by the up-and-down movement of the polish rod, and the pressure applied to the packing by the other end of the pressure regulating mechanism is synchronously regulated by the aid of the lever principle and the pre-tightening action of the spring, so that when crude oil is pumped out by the upward movement of the polish rod, the other end of the pressure regulating mechanism synchronously moves downwards to pressurize the packing, and the sealing gap between the packing and the polish rod is ensured; when the polish rod moves downwards to reset, the other end of the pressure regulating mechanism moves upwards synchronously to decompress the packing, reduce packing abrasion and prolong the service life of the packing; the automatic adjusting device not only can automatically adjust the packing pressurization pressure by adapting the pressure change of the oil well, so that the packing pressure is always kept in an ideal state, but also ensures the instantaneity and synchronism of the packing pressurization pressure adjustment, avoids the problem that the packing pressurization pressure adjustment is delayed and the pressurization sealing is not reliable enough, and has simple structure and high reliability.
Drawings
Fig. 1 is a schematic perspective view of a self-sealing packing box according to an embodiment.
Fig. 2 is a cross-sectional view of a self-sealing packing box provided in an embodiment in a first state.
Fig. 3 is a cross-sectional view of a self-sealing packing box provided in an embodiment in a second state.
Fig. 4 is a cross-sectional view of a self-sealing packing box provided in an embodiment in a third state.
Fig. 5 is a cross-sectional view of an alternative view of a self-sealing packing box provided in an embodiment.
Fig. 6 is a schematic view of the internal structure of a self-sealing packing box according to an embodiment.
Reference numerals:
10. an upper case; 110. a boss; 20. a lower case; 30. a polish rod; 40. packing; 510. a first telescopic member; 511. an abutment; 512. the first telescopic loop bar; 513. a first telescopic rod; 514. a second elastic member; 515. a connecting rod; 520. a second telescopic member; 521. a fixed shaft; 522. the second telescopic loop bar; 523. a second telescopic rod; 610. a gland; 611. a mounting rod; 620. a first elastic member; 630. pressing and plugging; 640. a bushing; 641. a mounting groove; 710. a driving device; 720. a transmission device; 730. offset adjusting gears; 740. a speed reducer; 810. a baffle; 820. a screw; 830. a handle.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Example 1
As shown in fig. 1 and 2, the self-sealing packing box includes an upper box body 10, a lower box body 20, a pressure regulating mechanism, a pressure cover 610, a first elastic member 620, a pressure plug 630, and a bushing 640.
As shown in fig. 1 and 2, the upper case 10 and the lower case 20 are both sleeved outside the polish rod 30, the upper case 10 and the lower case 20 are detachably connected, and a packing 40 is disposed in the lower case 20. The gland 610, the first elastic member 620 and the plunger 630 are sequentially abutted from top to bottom, and are all sleeved outside the polish rod 30, and the bottom of the plunger 630 abuts against the top of the packing 40. In this embodiment, the first elastic member 620 is a spring, and of course, a spring member such as a reed may be used. The first elastic member 620 applies the pressurizing pressure to the plunger 630 and then to the packing 40, so that the packing 40 is uniformly pressurized, and meanwhile, the first elastic member 620 generates elastic potential energy accumulated after elastic deformation and can react to the pressure regulating mechanism to help the pressure regulating mechanism to reset.
As shown in fig. 1 and 2, the bushing 640 is sleeved between the lower case 20 and the packing 40, the pressing plug 630 is sleeved on the bushing 640, the inner peripheral side of the upper case 10 is provided with a boss 110 along the circumferential direction thereof, and the outer edge of the pressing plug 630 is adapted to the boss 110; the bushing 640 has mounting grooves 641 provided along the length direction of the polish rod 30, two mounting grooves 641 are uniformly distributed along the circumferential direction of the bushing 640, the gland 610 has mounting bars 611 fitted with the mounting grooves 641, and the outer circumferential side of the gland 610 is provided with teeth. The arrangement of the boss 110 is convenient for disassembling the upper box body 10, and when the upper box body 10 is taken out together with the pressing plug 630 through the boss 110, the packing 40 is convenient for subsequent replacement.
As shown in fig. 2 and 6, the pressure regulating mechanism includes a first telescopic member 510, a second telescopic member 520, and an abutment member 511. The number of the first telescopic members 510 is one, the number of the second telescopic members 520 is two, and the two second telescopic members 520 are symmetrically arranged on two sides of the first telescopic member 510. The first telescopic member 510 drives the second telescopic members 520 at two sides to move, so that the stress is uniform and the structure is stable.
As shown in fig. 2, the first telescopic member 510 is arranged along the radial direction of the polish rod 30, the first telescopic member 510 includes a first telescopic sleeve rod 512 and a first telescopic rod 513, one end of the first telescopic sleeve rod 512 abuts against the inner side surface of the upper box body 10, the other end of the first telescopic sleeve rod 512 is movably sleeved with the first telescopic rod 513, the first telescopic rod 513 is fixedly connected with the abutting member 511, the abutting member 511 abuts against the polish rod 30 and moves along the length direction of the polish rod 30, the abutting member 511 is a roller, the roller rotates unidirectionally, and the roller rotates when moving downwards; the first telescopic rod 513 is sleeved with a second elastic piece 514, and the second elastic piece 514 is abutted between the first telescopic sleeve rod 512 and the first telescopic rod 513. In this embodiment, the roller is provided with a unidirectional bearing, and the second elastic member 514 is a spring, however, the second elastic member 514 may also be a spring such as a reed, and is not limited thereto. The second elastic member 514 is used for providing a force that the two ends of the first telescopic member 510 are abutted against the inner side surface of the upper case 10 and the polish rod 30.
As shown in fig. 2 and 6, the second telescopic member 520 includes a second telescopic rod 522 and a second telescopic rod 523, one end of the second telescopic rod 522 is movably connected with the first telescopic rod 512 through a connecting rod 515 and moves along the length direction of the polish rod 30 along with the first telescopic rod 512, the second telescopic rod 523 is movably sleeved at the other end of the second telescopic rod 522, the second telescopic rod 523 is rotatably connected with the upper box body 10 through a fixed shaft 521, and one end of the second telescopic rod 523 abuts against the gland 610; the second telescopic rod 523 is sleeved with a third elastic piece, and the third elastic piece is abutted between the second telescopic sleeve rod 522 and the second telescopic rod 523. The third spring is used to provide a force of the second telescoping rod 522 against the link 515 such that one end of the second telescoping rod 522 can move with the first telescoping rod 512.
The roller moves upwards when the packing 40 is pressurized, at the moment, the roller cannot rotate, only sliding friction exists between the roller and the polished rod 30, and stability of the pressurizing pressure of the second telescopic rod 523 to the gland 610, namely stability of the pressurizing pressure of the packing 40 is guaranteed; the roller rolls downwards when the packing 40 is depressurized, and sliding friction and rolling friction exist between the roller and the polished rod 30, so that the pressurizing pressure of the second telescopic rod 523 to the gland 610 is released.
As shown in fig. 6, the number of the pressure regulating mechanisms is four, and the four pressure regulating mechanisms are uniformly arranged in the circumferential direction thereof with the polish rod 30 as the center. Ensuring that the pressure regulating mechanism applies pressure uniformly to the gland 610 improves the reliability and stability of the pressurized seal against the packing 40.
As shown in fig. 2, 3 and 4, when the polish rod 30 moves up, the abutting piece 511 drives the first telescopic piece 510 to move up along the length direction of the polish rod 30, the first telescopic piece 510 drives one end of the second telescopic sleeve 522 to move up and stretch out relative to the second telescopic piece 523 through the connecting rod 515, the second telescopic piece 520 rotates relative to the fixed shaft 521, under the action of the elasticity of the lever extrusion and the third elastic piece, the second telescopic piece 523 abuts against one end of the gland 610 to move down, and the pressure on the gland 610 is increased; when the polish rod 30 moves down, the abutting piece 511 drives the first telescopic piece 510 to move down along the length direction of the polish rod 30, the first telescopic piece 510 drives one end of the second telescopic sleeve 522 to move down and stretch out relative to the second telescopic rod 523 through the connecting rod 515, the second telescopic piece 520 rotates relative to the fixed shaft 521, and the second telescopic rod 523 abuts against one end of the gland 610 to move up due to the elastic action of the third elastic piece and the retraction of the lever, so that the pressure on the gland 610 is reduced.
By arranging the pressure regulating mechanism between the polish rod 30 and the packing 40, one end of the pressure regulating mechanism is driven to move by utilizing the up-and-down movement of the polish rod 30, and the pressure applied to the packing 40 by the other end of the pressure regulating mechanism is synchronously regulated by virtue of the lever principle and the pre-tightening effect of a spring, so that when the polish rod 30 moves upwards to extract crude oil, the other end of the pressure regulating mechanism moves downwards synchronously, the packing 40 is pressurized, and the sealing gap between the packing 40 and the polish rod 30 is ensured; when the polish rod 30 moves downwards to reset, the other end of the pressure regulating mechanism moves upwards synchronously, so as to decompress the packing 40, reduce the abrasion of the packing 40 and prolong the service life of the packing 40; the automatic adjustment of the packing 40 pressure is realized by adapting to the pressure change of the oil well, so that the packing 40 pressure is always kept in an ideal state, the instantaneity and the synchronism of the packing 40 pressure adjustment are ensured, the problems of delay of the packing 40 pressure adjustment, insufficient reliability of pressure sealing and simple structure are avoided, and the reliability is high.
Example two
Compared with the first embodiment, the embodiment further comprises a deviation adjusting mechanism.
As shown in fig. 4 and 6, the deviation adjusting mechanism includes a driving device 710, a speed reducer 740, a transmission device 720, a controller, a deviation sensor and a deviation adjusting gear 730, wherein the deviation sensor is used for detecting whether the polished rod 30 is deviated, in this embodiment, the deviation sensor is a pressure sensor, and the pressure sensor is disposed at the connection position of the four abutting pieces 511 and the polished rod 30; the transmission 720 includes a transmission gear; the driving device 710 is an electric motor. Of course, the embodiments of the present disclosure include, but are not limited to, that the driving device 710 may be a hydraulic motor, a hydraulic cylinder, a pneumatic cylinder, or other types of driving sources, as long as the driving gear is driven to rotate.
As shown in fig. 4 and 6, the controller is respectively connected with the driving device 710 and the deflection sensor in a communication manner, the driving device 710 is connected with the transmission device 720, the driving device 710 drives the transmission device 720, the speed reducer 740 is arranged between the driving device 710 and the transmission device 720 and is respectively connected with the driving device 710 and the transmission device 720, the transmission device 720 is connected with the deflection adjusting gear 730, and the deflection adjusting gear 730 is meshed with teeth on the outer peripheral side of the gland 610; when the offset sensor detects that the polish rod 30 is offset, a start signal is sent to the driving device 710, and when the offset sensor detects that the polish rod 30 is timing, a close signal is sent to the driving device 710. The power is transmitted from the driving device 710 to the gland 610 through gear engagement, so that the rotation of the gland 610 is realized, the service efficiency is high, and the structure is compact.
As shown in fig. 4 and 6, the offset gear 730 is an incomplete gear, and the outer circumferential side of the gland 610 is uniformly provided with teeth, or the offset gear 730 is a complete gear, and the outer circumferential side portion of the gland 610 is provided with teeth. In this embodiment, the offset gear 730 is an incomplete gear, and the outer circumference side of the gland 610 is uniformly provided with teeth. When the polish rod 30 deflects, in order to adjust the positional relationship of the packing 40 relative to the polish rod 30, the polish rod 30 is prevented from continuously wearing a certain position of the packing 40, and the rotating packing box is finely adjusted, so that the offset adjusting gear 730 is set to be an incomplete gear, or the outer peripheral side part of the gland 610 is provided with teeth, the structure is simple, and the cost is saved.
The working method of the deviation adjusting mechanism comprises the following steps:
detecting whether the polish rod 30 is biased by a bias sensor;
when the deviation sensor detects that the polish rod 30 is deviated, a starting signal is sent to the driving device 710, the driving device 710 is started, the deviation adjusting gear 730 is rotated through the transmission device 720, when the polish rod 30 moves downwards, the first end of the first telescopic member 510 is driven to move downwards, the second end of the second telescopic member 520 moves upwards to the position that the deviation adjusting gear 730 is meshed with teeth on the outer peripheral side of the gland 610, the gland 610 is driven to rotate by the deviation adjusting gear 730, and the bushing 640 and the packing 40 inside the bushing 640 are driven to rotate by the gland 610 through the mounting rod 611.
When the offset sensor detects the timing of the polish rod 30, a closing signal is sent to the driving device 710, closing the driving device 710.
During pumping operation, the polished rod 30 of the pumping unit is easy to deviate from a wellhead device, namely, the center line of the polished rod 30 and the wellhead is deviated, a conventional packing box does not have the function of adjusting the eccentricity of the polished rod 30 and the wellhead device, eccentric wear can occur between the polished rod 30 and the packing box along with the up-and-down repeated motion of the polished rod 30 driven by the pumping unit, the packing 40 is accelerated to be worn, and crude oil is even leaked. At this time, the pumping unit is shut down, the packing box is disassembled, the new packing 40 is replaced, short-term production stoppage of the oil well is caused, the operation times and the well stoppage time are increased, and accordingly the oil extraction efficiency is reduced, and the production cost is increased. According to the embodiment, the offset adjusting mechanism is arranged in the packing box, when the center line of the polish rod 30 relative to the wellhead is offset, the polish rod 30 moves downwards, namely, the packing 40 is subjected to small compression at the moment, the rotating action resistance is small and easy to realize, so that the position relation of the packing 40 in the packing box relative to the polish rod 30 is changed, the polish rod 30 is prevented from continuously wearing a certain part of the packing 40, and the service life of the packing 40 is prolonged; and through setting up pressure sensor, can real-time supervision four butt pieces 511 butt polished rod 30 department's pressure to monitor polished rod 30's off normal condition, realize remote monitoring's function, use manpower sparingly cost.
The rest of the present embodiment can refer to the first embodiment, and will not be described herein.
Example III
The present embodiment further includes a locking mechanism as compared with the first embodiment.
As shown in fig. 5, the locking mechanism comprises a baffle 810, a screw 820 and a handle 830, the second end of the first telescopic member 510 is abutted against the inner side surface of the upper box body 10 through the baffle 810, a threaded hole is formed in the side surface of the upper box body 10, one end of the screw 820 is mounted in the threaded hole and abuts against the baffle 810, the other end of the screw 820 is fixedly connected with the handle 830, and the handle 830 is in a cross shape; the upper box body 10 and the lower box body 20 are connected through screw thread fit; the number of the locking mechanisms is two, and the two locking mechanisms are symmetrically arranged on two sides of the polish rod 30. The provision of the handle 830 increases the area of force applied by the installer to the hand during freehand installation, providing a better point of force application for facilitating finger grip rotation.
When changing packing 40, dismantle last box body 10 and lower box body 20 earlier, rotatory polished rod 30 both sides handle 830 again, through two pressure regulating mechanism that are connected with two locking mechanism, support tight polished rod 30 with first extensible member 510, make and go up box body 10 and fix on polished rod 30, be convenient for change packing 40, solved because packing 40 dismantles the installation time longer, polished rod 30 overlength is difficult to take off last box body 10, need the manual work lift go up the box body 10 and change the problem.
The rest of the present embodiment can refer to the first embodiment, and will not be described herein.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (7)
1. The self-sealing packing box comprises an upper box body and a lower box body, wherein the upper box body and the lower box body are sleeved outside a polish rod, the upper box body and the lower box body are detachably connected, and packing is arranged in the lower box body; the pressure regulating mechanism comprises a first telescopic piece and a second telescopic piece, the first telescopic piece is arranged along the radial direction of the polish rod, the first end of the first telescopic piece is abutted against the polish rod and moves along the length direction of the polish rod, the second end of the first telescopic piece is abutted against the inner side surface of the upper box body, the second telescopic piece is rotationally connected with the upper box body through a fixed shaft, the second end of the first telescopic piece drives the first end of the second telescopic piece to move along the length direction of the polish rod through a connecting rod, and the second end of the second telescopic piece is abutted against the gland; when the polish rod moves upwards, the first end of the first telescopic piece is driven to move upwards, and the second end of the second telescopic piece moves downwards, so that the pressure on the gland is increased; when the polish rod moves downwards, the first end of the first telescopic piece is driven to move downwards, and the second end of the second telescopic piece moves upwards, so that the pressure on the gland is reduced;
the number of the pressure regulating mechanisms is four, and the four pressure regulating mechanisms are uniformly distributed along the circumferential direction by taking the polished rod as the center; the pressure regulating mechanism further comprises an abutting piece, the first end of the first telescopic piece abuts against the polish rod through the abutting piece, the abutting piece is a roller, the roller rotates in a unidirectional mode, and the roller rotates when moving downwards;
the number of the first telescopic pieces is one, the number of the second telescopic pieces is two, and the two second telescopic pieces are symmetrically arranged on two sides of the first telescopic piece; the first telescopic piece comprises a first telescopic sleeve rod and a first telescopic rod, one end of the first telescopic sleeve rod is abutted against the inner side surface of the upper box body, the other end of the first telescopic sleeve rod is movably sleeved with the first telescopic rod, and the first telescopic rod is fixedly connected with the abutting piece; the second telescopic piece comprises a second telescopic sleeve rod and a second telescopic rod, one end of the second telescopic sleeve rod is movably connected with the first telescopic sleeve rod through a connecting rod, the other end of the second telescopic sleeve rod is movably sleeved with the second telescopic rod, the second telescopic rod is rotatably connected with the upper box body through a fixed shaft, and one end of the second telescopic rod is abutted against the gland;
the first telescopic rod is sleeved with a second elastic piece, and the second elastic piece is abutted between the first telescopic sleeve rod and the first telescopic rod; the second telescopic rod is sleeved with a third elastic piece, and the third elastic piece is abutted between the second telescopic sleeve rod and the second telescopic rod.
2. The self-sealing packing box according to claim 1, further comprising a bushing, wherein the bushing is sleeved between the lower box body and the packing, the plunger is sleeved on the bushing, a boss is arranged on the inner peripheral side of the upper box body along the circumferential direction of the upper box body, and the outer edge of the plunger is matched with the boss; the bush has the edge the mounting groove that polished rod length direction set up, the mounting groove is followed bush circumference equipartition has two, the gland have with the mounting rod of mounting groove adaptation, the periphery side of gland is provided with the tooth.
3. The self-sealing packing box according to claim 2, further comprising a deviation adjusting mechanism, wherein the deviation adjusting mechanism comprises a driving device, a transmission device, a controller, a deviation sensor and a deviation adjusting gear, the controller is respectively in communication connection with the driving device and the deviation sensor, the deviation sensor is used for detecting whether the polished rod is deviated or not, the driving device is connected with the transmission device, the driving device drives the transmission device, the transmission device is connected with the deviation adjusting gear, and the deviation adjusting gear is meshed with teeth on the outer circumference side of the gland; when the offset sensor detects that the polish rod is offset, a starting signal is sent to the driving device, and when the offset sensor detects that the polish rod is timing, a closing signal is sent to the driving device.
4. A self-sealing packing box according to claim 3, wherein the driving means comprises at least one of an electric motor, a hydraulic cylinder and a pneumatic cylinder, and the transmission means comprises a transmission gear.
5. A self-sealing packing box according to claim 3, wherein the offset gear is an incomplete gear, teeth are uniformly provided on the outer circumferential side of the gland, or the offset gear is a complete gear, and teeth are provided on the outer circumferential side portion of the gland.
6. A self-sealing packing box according to claim 3, further comprising a decelerator disposed between and connected to the driving means and the transmission means, respectively.
7. The self-sealing packing box according to claim 2, further comprising a locking mechanism, wherein the locking mechanism comprises a baffle, a screw rod and a handle, the second end of the first telescopic piece is abutted against the inner side surface of the upper box body through the baffle, a threaded hole is formed in the side surface of the upper box body, one end of the screw rod is installed in the threaded hole and abuts against the baffle, the other end of the screw rod is fixedly connected with the handle, and the handle is in a cross shape; the upper box body is connected with the lower box body in a threaded fit manner; the number of the locking mechanisms is two, and the two locking mechanisms are symmetrically arranged on two sides of the polish rod.
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| CN202311002303.2A CN116717211B (en) | 2023-08-10 | 2023-08-10 | Self-sealing packing box |
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| CN202311002303.2A CN116717211B (en) | 2023-08-10 | 2023-08-10 | Self-sealing packing box |
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| CN116717211B true CN116717211B (en) | 2023-11-28 |
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| CN119658605A (en) * | 2024-11-29 | 2025-03-21 | 广州创依科技有限公司 | High compression ratio electric packing pressing device and pressing method |
Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8815938D0 (en) * | 1987-07-24 | 1988-08-10 | Double E Inc | Wellhead with safety valve for pumping well |
| CA2311036A1 (en) * | 2000-06-09 | 2001-12-09 | Oil Lift Technology Inc. | Pump drive head with leak-free stuffing box, centrifugal brake and polish rod locking clamp |
| RU2201529C2 (en) * | 2000-07-28 | 2003-03-27 | Общество с ограниченной ответственностью "РосНефтеКомплект" | Subsurface pump rod sealing device |
| CN2561918Y (en) * | 2002-04-30 | 2003-07-23 | 张景库 | Sucking polish rod stuffing box against off abrasion |
| CN2937460Y (en) * | 2006-08-03 | 2007-08-22 | 高忠平 | Automatic compensation sealing mechanism |
| CN201184161Y (en) * | 2008-04-10 | 2009-01-21 | 中国石油天然气股份有限公司 | Automatic tight formula rod-pumped well polish rod seals packing box |
| CN201474648U (en) * | 2009-08-28 | 2010-05-19 | 中国石油化工股份有限公司 | Rotating anti-partial grinding packing set box |
| CN202520268U (en) * | 2012-04-06 | 2012-11-07 | 中国石油天然气股份有限公司 | Follow-up type eccentric wear prevention polish rod sealing device for oil pumping well head |
| CN202937220U (en) * | 2012-11-29 | 2013-05-15 | 姚燕 | Automatic deviation regulation type wellhead packing box |
| CN103758482A (en) * | 2014-02-20 | 2014-04-30 | 邓海波 | Universal random deviation rectification outside injected magnetic fluid polished rod sealing device |
| CN103993850A (en) * | 2013-08-27 | 2014-08-20 | 托普威尔石油技术股份公司 | Packing box |
| CN204371194U (en) * | 2014-12-15 | 2015-06-03 | 中国石油天然气股份有限公司 | Wellhead polish rod sealer and packing for oil pumping unit |
| CN204532206U (en) * | 2014-11-21 | 2015-08-05 | 中国石油天然气股份有限公司 | Oil recovery polished rod sealer and oil recovery device |
| CN106223894A (en) * | 2016-08-29 | 2016-12-14 | 荆州市高鑫石油阀件有限公司 | Oil pumping machine well head packing box |
| CN111305786A (en) * | 2020-04-17 | 2020-06-19 | 濮阳市大通机泵有限公司 | Automatic tight packing polished rod sealer |
| CN211008538U (en) * | 2019-07-02 | 2020-07-14 | 中国石油化工股份有限公司 | Oil well energy storage formula well head packing box |
| CN211370338U (en) * | 2019-11-04 | 2020-08-28 | 鄂静 | Self-adaptive large-angle eccentric wear prevention wellhead sealing device |
| CN112282688A (en) * | 2020-11-18 | 2021-01-29 | 大庆因你美丽机械设备制造有限公司 | Intelligent energy-saving eccentric wear prevention sealing device |
| CN113338834A (en) * | 2021-07-26 | 2021-09-03 | 中国石油大学胜利学院 | Automatic pressure regulating polish rod sealing device |
| CN114704221A (en) * | 2022-04-06 | 2022-07-05 | 山西宏运智能科技有限公司 | Manually integrated oil well head packing box |
| CN216922068U (en) * | 2022-04-06 | 2022-07-08 | 山西宏运智能科技有限公司 | Manual-automatic integrated oil well wellhead packing box |
| CN115263226A (en) * | 2022-09-26 | 2022-11-01 | 胜利油田东强机电设备制造有限公司 | Polished rod sealing device with eccentric wear prevention function for oil field |
| CN218117732U (en) * | 2021-10-24 | 2022-12-23 | 中国石油化工股份有限公司 | Quick filling device for oil well sealing packing |
| CN219139019U (en) * | 2023-02-07 | 2023-06-06 | 濮阳市东昊机械电子有限公司 | Energy storage type multistage sealing device |
-
2023
- 2023-08-10 CN CN202311002303.2A patent/CN116717211B/en active Active
Patent Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8815938D0 (en) * | 1987-07-24 | 1988-08-10 | Double E Inc | Wellhead with safety valve for pumping well |
| CA2311036A1 (en) * | 2000-06-09 | 2001-12-09 | Oil Lift Technology Inc. | Pump drive head with leak-free stuffing box, centrifugal brake and polish rod locking clamp |
| RU2201529C2 (en) * | 2000-07-28 | 2003-03-27 | Общество с ограниченной ответственностью "РосНефтеКомплект" | Subsurface pump rod sealing device |
| CN2561918Y (en) * | 2002-04-30 | 2003-07-23 | 张景库 | Sucking polish rod stuffing box against off abrasion |
| CN2937460Y (en) * | 2006-08-03 | 2007-08-22 | 高忠平 | Automatic compensation sealing mechanism |
| CN201184161Y (en) * | 2008-04-10 | 2009-01-21 | 中国石油天然气股份有限公司 | Automatic tight formula rod-pumped well polish rod seals packing box |
| CN201474648U (en) * | 2009-08-28 | 2010-05-19 | 中国石油化工股份有限公司 | Rotating anti-partial grinding packing set box |
| CN202520268U (en) * | 2012-04-06 | 2012-11-07 | 中国石油天然气股份有限公司 | Follow-up type eccentric wear prevention polish rod sealing device for oil pumping well head |
| CN202937220U (en) * | 2012-11-29 | 2013-05-15 | 姚燕 | Automatic deviation regulation type wellhead packing box |
| CN103993850A (en) * | 2013-08-27 | 2014-08-20 | 托普威尔石油技术股份公司 | Packing box |
| CN103758482A (en) * | 2014-02-20 | 2014-04-30 | 邓海波 | Universal random deviation rectification outside injected magnetic fluid polished rod sealing device |
| CN204532206U (en) * | 2014-11-21 | 2015-08-05 | 中国石油天然气股份有限公司 | Oil recovery polished rod sealer and oil recovery device |
| CN204371194U (en) * | 2014-12-15 | 2015-06-03 | 中国石油天然气股份有限公司 | Wellhead polish rod sealer and packing for oil pumping unit |
| CN106223894A (en) * | 2016-08-29 | 2016-12-14 | 荆州市高鑫石油阀件有限公司 | Oil pumping machine well head packing box |
| CN211008538U (en) * | 2019-07-02 | 2020-07-14 | 中国石油化工股份有限公司 | Oil well energy storage formula well head packing box |
| CN211370338U (en) * | 2019-11-04 | 2020-08-28 | 鄂静 | Self-adaptive large-angle eccentric wear prevention wellhead sealing device |
| CN111305786A (en) * | 2020-04-17 | 2020-06-19 | 濮阳市大通机泵有限公司 | Automatic tight packing polished rod sealer |
| CN112282688A (en) * | 2020-11-18 | 2021-01-29 | 大庆因你美丽机械设备制造有限公司 | Intelligent energy-saving eccentric wear prevention sealing device |
| CN113338834A (en) * | 2021-07-26 | 2021-09-03 | 中国石油大学胜利学院 | Automatic pressure regulating polish rod sealing device |
| CN218117732U (en) * | 2021-10-24 | 2022-12-23 | 中国石油化工股份有限公司 | Quick filling device for oil well sealing packing |
| CN114704221A (en) * | 2022-04-06 | 2022-07-05 | 山西宏运智能科技有限公司 | Manually integrated oil well head packing box |
| CN216922068U (en) * | 2022-04-06 | 2022-07-08 | 山西宏运智能科技有限公司 | Manual-automatic integrated oil well wellhead packing box |
| CN115263226A (en) * | 2022-09-26 | 2022-11-01 | 胜利油田东强机电设备制造有限公司 | Polished rod sealing device with eccentric wear prevention function for oil field |
| CN219139019U (en) * | 2023-02-07 | 2023-06-06 | 濮阳市东昊机械电子有限公司 | Energy storage type multistage sealing device |
Non-Patent Citations (2)
| Title |
|---|
| 一种齿条式可调偏调斜光杆密封器研制;张乐;尹海;肖鲜东;;新疆石油科技;第28卷(第03期);第44页-第46页 * |
| 抽油井口弹性下压自动收缩式盘根盒的研制;丁明华;史建国;周元海;;石油矿场机械;第37卷(第10期);第102页-第104页 * |
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