CA2808602A1 - Tower-type double-chain belt pumping unit - Google Patents
Tower-type double-chain belt pumping unit Download PDFInfo
- Publication number
- CA2808602A1 CA2808602A1 CA2808602A CA2808602A CA2808602A1 CA 2808602 A1 CA2808602 A1 CA 2808602A1 CA 2808602 A CA2808602 A CA 2808602A CA 2808602 A CA2808602 A CA 2808602A CA 2808602 A1 CA2808602 A1 CA 2808602A1
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- Prior art keywords
- tower
- chain
- belt
- group
- pumping unit
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- Abandoned
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000005096 rolling process Methods 0.000 claims description 33
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 230000009194 climbing Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
Abstract
A tower-type double-chain belt oil pumping machine comprises: a tower frame (10), a first belt roller (14) and a second belt roller (15) separated from each other in parallel being disposed on the top of the tower frame, an upright device cabin (16) being disposed on the tower frame at a side of the second belt roller (15), and a windproof guide rail (17) extending uprightly being disposed on a side of the tower frame at a side of the first belt roller (14); a weighted belt (20) performing reciprocating motion, disposed across the first belt roller (14) and the second belt roller (15), and comprising an inner side end (21) located in the device cabin (16) of the tower frame (10) and an outer side end (22) extending at an outer side of the tower frame (10), the outer side end (22) being provided with a beam hanger (26) for being connected to an oil pumping rod, the beam hanger (26) being provided with a guide wheel (23) adapted to the windproof guide rail (17), and the device cabin (16) being provided with a balance box (30) connected to the inner side end (21) of the weighted belt (20) and a first chain drive mechanism (40) and a second chain drive mechanism (40') for driving the balance box (30) to move vertically. The oil pumping machine adopts a four-post tower structure, thereby greatly improving the stability of the device, avoiding the influence of the wind load on oil pumping, and increasing the reliability of the device.
Description
Tower-Type Double-Chain Belt Pumping Unit The present application claims the priorities of Chinese Utility Model Patent Application No. 201120292730.5, entitled "Tackle Assembly" filed to China's State Intellectual Property Office on August 12, 2011 and international application No.
PCT/CN2012/075397, entitled "Tower-Type Double-Chain Belt Pumping Unit" filed on May 11, 2012, the entire disclosures of which are incorporated herein by reference.
Technical field of the invention The invention relates to a pumping unit for oil extraction in an oil field, and in particular to a tower-type double-chain belt pumping unit.
Background of the invention A belt pumping unit is an oil extraction equipment on-ground with low pumping speed, long stroke and heavy load, which can meet the requirements of oil wells in various operation conditions, has the features of high efficiency, safety, reliability and energy saving, and is widely used in the country and the world.
The belt pumping unit includes a base, a rack erected on the base, a loading belt supported on a roller on the top of the rack, a balance box connected with the inside end of the loading belt, a rope hanger connected with the outside end of the loading belt, a chain driving mechanism for driving the balance box, and a motor and a reducer for driving the chain driving mechanism.
Compared to single group of chain driving mechanism, double groups of chain driving mechanisms have the features of the resultant force of driving forces and the load force being in the same direction, and further have the features of low working noise, small power consumption, and uniform load of the loading belt along the width direction of the belt. However, the loading belt is a reciprocating flexible load-bearing member, susceptible to wind load.
Summary of the invention An object of the invention is to provide a tower-type double-chain belt pumping unit, which is exerted with uniform force, operates smoothly, can eliminate the influence of wind load during work and can prolong the service life of the loading belt.
To this end, the invention provides a tower-type double-chain belt pumping unit, comprising a tower bracket, wherein the top of the tower bracket is provided with a first belt roller and a second belt roller spaced in parallel apart from each other, one side of the tower bracket where the second belt roller is located is provided with an erect device cabin, and the side of the tower bracket where the first belt roller is located is provided with a vertically extending windproof guide rail; and a reciprocating loading belt, spanning over the first belt roller and the second belt roller, and comprising an inside end located in the device cabin of the tower bracket and an outside end extending outside the tower bracket, wherein the outside end is provided with a rope hanger for connecting a pumping rod, and the rope hanger is provided with a guide wheel mated with the windproof guide rail, wherein a balance box connected with the inside end of the loading belt and a first chain driving mechanism and a second chain driving mechanism for driving the lifting movement of the balance box are arranged in the device cabin.
Furthermore, the balance box comprises a counterweight portion connected with the inside end of the loading belt, a driving sliding seat located below the counterweight portion, a first guiding wheel group arranged on the left and right sides of the counterweight portion for limiting left-right swinging, and a second guiding wheel group arranged on the left and right sides of the counterweight portion for limiting forward-backward swinging, wherein a first tackle synchronously movably connected with a chain of the first chain driving mechanism and a second tackle synchronously movably connected with a chain of the second chain driving mechanism are arranged in the driving sliding seat.
Furthermore, each guiding wheel of the first guiding wheel group and of the second guiding wheel group is adjustable relative to the position of guide contact surface thereof.
Furthermore, the counterweight portion comprises a plurality of counterweight grooves arranged in parallel for accommodating counterweights, each counterweight groove extending along a vertical direction.
Furthermore, a climbing ladder is arranged to the tower bracket on at least one of both sides of the loading belt.
Furthermore, the tower bracket is provided with multiple layers of maintenance platforms.
Furthermore, the tower bracket comprises a base, upright columns arranged in rectangular form on the base and cross beams arranged between the upright columns, crosswise webs are arranged between the upright columns on the side of the tower bracket on one side of the first belt roller, and the windproof guide rail is supported on the cross beams and the webs.
Furthermore, each of the first tackle and the second tackle comprises a tackle body, a driving shaft freely rotatably supported in a tapered hole cavity of the tackle body, a chain link on one side of the driving shaft, a first group of rolling wheels and a second group of rolling wheels horizontally arranged above the driving shaft, a third group of rolling wheels and a fourth group of rolling wheels horizontally arranged below the driving shaft.
Furthermore, both a supporting shaft of the first group of rolling wheels and a supporting shaft of the second group of rolling wheels are eccentric shafts with rotational positions adjustable, and the first group of rolling wheels and the second group of rolling wheels abut to the guide rail in the driving sliding seat.
Furthermore, the first chain driving mechanism and the second chain driving mechanism are simultaneously in a driving manner connected with the same reducer arranged on the base outside the device cabin, and the reducer is in a transmission manner connected with a motor arranged on a motor platform, wherein the motor platform is located above the base and spaced apart from the base.
Compared to single belt roller in the prior art, the pumping unit of the invention reduces the bending degree in a unit of length for the loading belt, and prolongs the service life of the belt, by providing the first belt roller and the second belt roller. In a windy environment, the loading belt is prone to swinging due to its windward area, and the pumping rod also swings along with it, which is really detrimental to oil pumping facilities. By providing the four-column tower-type structure, the windproof guide rail and the guide wheel, the influence of wind load during pumping can be avoided, and the reliability of the device can be increased.
In addition to the objects, features and advantages as described above, other objects, features and advantages of the invention will be further described in conjunction with the accompanying drawings.
Brief description of the drawings The accompanying drawings, which constitute a part of this specification and provide a further understanding of the invention, illustrate preferred embodiments of the invention, and serve to explain the principles of the invention together with the specification. In the drawings:
Fig. 1 is a side schematic view of a tower-type double-chain belt pumping unit according to the invention;
Fig. 2 is a front schematic view of the tower-type double-chain belt pumping unit according to the invention;
Fig. 3 is a side schematic view of the tower-type double-chain belt pumping unit according to the invention, illustrating chain driving mechanisms and a balance box in a device cabin;
Fig. 4 is a side schematic view of the tower-type double-chain belt pumping unit according to the invention, illustrating that the balance box is located in the lowest position and in the highest position;
Fig. 5 is a schematic view of a driving mode of the tower-type double-chain belt pumping unit according to the invention;
Fig. 6 is a front schematic view of the balance box according to the invention;
Fig. 7 is a side schematic view of the balance box according to the invention;
Fig. 8 is a schematic view of connection relationship between a tackle of the balance box and said chain according to the invention;
Fig. 9 is a front schematic view of the tackle of the balance box according to the invention;
Fig. 10 is a top schematic view of the tackle of the balance box according to the invention;
Fig. 11 is a schematic plan view of a loading belt according to the invention;
Fig. 12 is a structural schematic view of the loading belt according to the invention; and Fig. 13 is a structural schematic view of a brake system according to the invention.
List of reference signs tower bracket 11 base 12 upright column 13 cross beam 14 first belt roller 15 second belt roller 16 device cabin 17 windproof guide rail 18_ motor platform 20 loading belt 21 inside end 22 outside end 23 guide wheel 24 hinge support 25 bolt 26 rope hanger 30 balance box 40 first chain driving mechanism 40' second chain driving mechanism 50 reducer 60 motor 70 brake system 71 brake disc 72 first brake caliper 73 second brake caliper 74 manual regulation rod 75 automatic regulation rod 101 maintenance platform 102 climbing ladder 103 web 41 lower sprocket 42 upper sprocket 43 annular chain 44 supporting seat 31 counterweight portion 32 driving sliding seat 33 first guiding wheel group 34 second guiding wheel group 321 sliding cavity 35 first tackle 36 second tackle 311 counterweight groove 37 position adjustment mechanism 351 tackle body , 352 tapered hole cavity 353 driving shaft 354 chain link 355 first group of rolling wheels 356 second group of rolling wheels 357 third group of rolling wheels 358 fourth group of rolling wheels 351a elastic clip holder 359 eccentric shaft Detailed description of the invention The invention is described in detail below in conjunction with the accompanying drawings, however the invention can be embodied in various ways defined and encompassed by claims.
Figs.1 to 5 are structural schematic views of a belt pumping unit according to an embodiment of the invention. Referring to Fig. 1 and Fig. 5, the tower-type double-chain belt pumping unit of the invention includes: a tower bracket 10, including a base 11, upright columns 12 arranged in rectangular form on the base 11 and cross beams 13 connected between the upright columns 12, the top of the tower bracket 10 is provided with a first belt roller 14 and a second belt roller 15 spaced in parallel apart from each other, one side of the tower bracket 10 where the second belt roller 15 is located is provided with an erect device cabin 16, and the side of the tower bracket where the first belt roller 14 is located is provided with a vertically extending windproof guide rail 17; and a loading belt 20, spanning over the first belt roller 14 and the second belt roller 15, and including an inside end 21 located in the device cabin 16 of the tower bracket 10 and an outside end 22 extending outside the tower bracket 10, wherein the outside end 22 forms a rope hanger, which is provided with a guide wheel 23 mated with the windproof guide rail 17, wherein a balance box 30 connected with the inside end 21 of the loading belt 20, and a first chain driving mechanism 40 and a second chain driving mechanism 40' for driving the lifting movement of the balance box 30 are arranged in the device cabin 16.
Compared to single belt roller in the prior art, the pumping unit of the invention reduces the bending degree in a unit of length, and prolongs the service life of the belt, by providing the first belt roller and the second belt roller. In a windy environment, the loading belt is prone to swinging due to a certain windward area thereof, and the pumping rod also swings along with it, which is really detrimental to pumping facilities.
By arranging the windproof guide rail and the guide wheel, the influence of wind load during pumping can be avoided, and the reliability of the device can be increased. In the existing belt pumping unit, the rack is only provided with the device cabin, without other parts, so the tower bracket mentioned in the invention cannot be formed, and it is not convenient for use and maintenance. In the invention, the tower bracket adopted has reliable structure as well as easy use and maintenance.
Compared to single chain transmission in the prior art, the pumping unit of the invention has more reasonably force exerted thereon, operates more smoothly, prolongs the service life of the device and reduces noise. With the four-column tower-type structure, the stability and reliability of the device can be improved greatly.
The tower-type double-chain belt pumping unit of the invention also includes a reducer 50 arranged on the base 11 outside the device cabin 16 and a motor 60 arranged on a motor platform 18 and connected with the reducer 50 in a transmission manner, wherein the motor platform 18 is distanced from the base 11, with belt transmission therebetween.
The tower-type double-chain belt pumping unit of the invention also includes a brake system 70, as shown in Fig. 13. The brake system 70 includes a brake disc 71, a first brake caliper 72 and a second brake caliper 73 arranged on the outer perimeter of the brake disc 71. The first brake caliper 72 is operated by a manual regulation rod 74 to realize the function of manual braking, and the second brake caliper 73 is operated by an automatic regulation rod 75 to conform to the occasion that automatic braking is required due to excess and deficiency of speed of the reducer.
In the above, the tower bracket 10 is provided with multiple layers of maintenance platforms 101, and a climbing ladder 102 is arranged to the tower bracket 10, on at least one of both sides of the loading belt.
In the above, crosswise webs 103 are arranged between the upright columns on the side of the tower bracket where the first belt roller 14 is located, and the windproof guide rail 17 is supported on the cross beams 13 and the webs 103.
In the above, the first chain driving mechanism 40 includes a lower sprocket 41, an upper sprocket 42 and an annular chain 43. The upper sprocket 42 is supported on a sprocket supporting seat 44. It should be noted that the positions of the upper sprocket and the lower sprocket of the first chain driving mechanism are fixed and only the chain is annularly rotatable. Preferably, a rotatable tensioner is connected between each of the lower sprocket 41 and an output shaft of the reducer 50 to realize the requirement for simultaneous installation of the first chain driving mechanism 40 and the first chain driving mechanism 40'.
Fig. 6 and Fig. 7 are structural schematic views of a balance box according to the invention. As shown in Fig. 6 and Fig. 7, the balance box 30 includes a counterweight portion 31 connected with the inside end of the loading belt 20, a driving sliding seat 32 located below the counterweight portion 31, a first guiding wheel group 33 arranged on the left and right sides of the counterweight portion 31 for limiting left-right swinging, and a second guiding wheel group 34 arranged on the left and right sides of the counterweight portion 31 for limiting forward-backward swinging, wherein a first tackle 35 synchronously movably connected with a chain of the first chain driving mechanism 40 and a second tackle 36 synchronously movably connected with a chain of the second chain driving mechanism 40' are arranged in a sliding cavity 321 of the driving sliding seat 32.
In the above, the first guiding wheel group 33 includes guiding wheels respectively arranged on the top left, bottom left, top right and bottom right positions.
The second guiding wheel group 34 includes guiding wheels respectively arranged on the top left, bottom left, top right and bottom right positions. There are two guiding wheels on each position of the second guiding wheel group 34, arranged along the forward and backward direction, one limiting forward swinging, and the other limiting backward swinging.
Preferably, each guiding wheel of the first guiding wheel group 33 and the second guiding wheel group 34 is adjustable relative to the position of guide contact surface thereof. Specific methods may be as follows: the guiding wheel is installed on a swing arm, and the position of the guiding wheel is adjusted by regulating the swinging angle of the swing arm.
Preferably, the counterweight portion 31 includes a plurality of counterweight grooves 311 arranged in parallel for accommodating counterweights, each counterweight groove 311 extending along a vertical direction. The height of the counterweight portion 31 is 3 to 5 times of the height of the driving sliding seating 32.
The bottom of the device cabin 16 is provided with a position adjustment mechanism 37 of the balance box 30.
Also as shown in Fig. 5 and Fig. 8, the first chain driving mechanism 40 and the second chain driving mechanism 40' are also located in the device cabin, in the front of the counterweight portion 31, synchronously driven by the same reducer, and the chain transmission and the speed of the first chain driving mechanism 40 and the second chain driving mechanism 40' are totally identical.
Fig. 9 and Fig. 10 are structural schematic views of the tackle of the balance box according to the invention. As shown in Fig. 9 and Fig. 10, the tackle 35 (the structure of the tackle 36 is the same as that of the tackle 35) includes a tackle body 351, a driving shaft 353 freely rotatably supported in a tapered hole cavity 352 of the tackle body 351, a chain link 354 on one side of the driving shaft 353, a first group of rolling wheels 355 and a second group of rolling wheels 356 horizontally arranged on the upper part of the tackle body 351, a third group of rolling wheels 357 and a fourth group of rolling wheels 358 horizontally arranged on the lower part of the tackle body 351.
In use, the first group of rolling wheels 355, the second group of rolling wheels 356, the third group of rolling wheels 357 and the fourth group of rolling wheels 358 respectively come into contact with sliding rails in the sliding cavity 321 of the sliding seat 32, and in such a way, the first tackle and the second tackle only move in a horizontal direction.
A supporting shaft 359 of the first group of rolling wheels 355 is an eccentric shaft adjustable in the position. The supporting shaft 359 is clamped and fixed by an elastic clip holder 351a of the tackle body 351. During commissioning, the eccentric shaft 359 rotates by loosening the bolt on the elastic clip holder 351a, so that the first group of rolling wheels 355 are clung and in contact to the guide rail in the sliding cavity 321 to realize the tensioning function. The structure of the supporting shaft of the second group of rolling wheels 356 is the same as that of the supporting shaft of the first group of rolling wheels 355, achieving the function of making the rolling wheel self-tension the guide rail.
Fig. 11 and Fig. 12 are structural schematic views of the loading belt according to the invention. As shown in Fig. 11 and Fig. 12, the inside end 21 of the loading belt 20 is fixedly connected with a hinge support 24 through a plurality of bolts 25, the end of each bolt 25 is tapered to avoid reducing its connection strength due to belt fibre breakage during knocking into the belt. The outside end 22 of the loading belt 20 is fixedly connected with the rope hanger 26 through a plurality of bolts, the inner side of the rope hanger 26 forms the guide wheel 23, and the end of each bolt is also tapered to avoid reducing its strength due to belt fibre breakage.
The above is only the preferred embodiment of the invention and not intended to limit the invention. For those skilled in the art, various changes and variations can be made to the invention. Any modifications, equivalent replacements, improvements and the like within the spirit and principle of the invention shall fall within the scope of protection of the invention.
PCT/CN2012/075397, entitled "Tower-Type Double-Chain Belt Pumping Unit" filed on May 11, 2012, the entire disclosures of which are incorporated herein by reference.
Technical field of the invention The invention relates to a pumping unit for oil extraction in an oil field, and in particular to a tower-type double-chain belt pumping unit.
Background of the invention A belt pumping unit is an oil extraction equipment on-ground with low pumping speed, long stroke and heavy load, which can meet the requirements of oil wells in various operation conditions, has the features of high efficiency, safety, reliability and energy saving, and is widely used in the country and the world.
The belt pumping unit includes a base, a rack erected on the base, a loading belt supported on a roller on the top of the rack, a balance box connected with the inside end of the loading belt, a rope hanger connected with the outside end of the loading belt, a chain driving mechanism for driving the balance box, and a motor and a reducer for driving the chain driving mechanism.
Compared to single group of chain driving mechanism, double groups of chain driving mechanisms have the features of the resultant force of driving forces and the load force being in the same direction, and further have the features of low working noise, small power consumption, and uniform load of the loading belt along the width direction of the belt. However, the loading belt is a reciprocating flexible load-bearing member, susceptible to wind load.
Summary of the invention An object of the invention is to provide a tower-type double-chain belt pumping unit, which is exerted with uniform force, operates smoothly, can eliminate the influence of wind load during work and can prolong the service life of the loading belt.
To this end, the invention provides a tower-type double-chain belt pumping unit, comprising a tower bracket, wherein the top of the tower bracket is provided with a first belt roller and a second belt roller spaced in parallel apart from each other, one side of the tower bracket where the second belt roller is located is provided with an erect device cabin, and the side of the tower bracket where the first belt roller is located is provided with a vertically extending windproof guide rail; and a reciprocating loading belt, spanning over the first belt roller and the second belt roller, and comprising an inside end located in the device cabin of the tower bracket and an outside end extending outside the tower bracket, wherein the outside end is provided with a rope hanger for connecting a pumping rod, and the rope hanger is provided with a guide wheel mated with the windproof guide rail, wherein a balance box connected with the inside end of the loading belt and a first chain driving mechanism and a second chain driving mechanism for driving the lifting movement of the balance box are arranged in the device cabin.
Furthermore, the balance box comprises a counterweight portion connected with the inside end of the loading belt, a driving sliding seat located below the counterweight portion, a first guiding wheel group arranged on the left and right sides of the counterweight portion for limiting left-right swinging, and a second guiding wheel group arranged on the left and right sides of the counterweight portion for limiting forward-backward swinging, wherein a first tackle synchronously movably connected with a chain of the first chain driving mechanism and a second tackle synchronously movably connected with a chain of the second chain driving mechanism are arranged in the driving sliding seat.
Furthermore, each guiding wheel of the first guiding wheel group and of the second guiding wheel group is adjustable relative to the position of guide contact surface thereof.
Furthermore, the counterweight portion comprises a plurality of counterweight grooves arranged in parallel for accommodating counterweights, each counterweight groove extending along a vertical direction.
Furthermore, a climbing ladder is arranged to the tower bracket on at least one of both sides of the loading belt.
Furthermore, the tower bracket is provided with multiple layers of maintenance platforms.
Furthermore, the tower bracket comprises a base, upright columns arranged in rectangular form on the base and cross beams arranged between the upright columns, crosswise webs are arranged between the upright columns on the side of the tower bracket on one side of the first belt roller, and the windproof guide rail is supported on the cross beams and the webs.
Furthermore, each of the first tackle and the second tackle comprises a tackle body, a driving shaft freely rotatably supported in a tapered hole cavity of the tackle body, a chain link on one side of the driving shaft, a first group of rolling wheels and a second group of rolling wheels horizontally arranged above the driving shaft, a third group of rolling wheels and a fourth group of rolling wheels horizontally arranged below the driving shaft.
Furthermore, both a supporting shaft of the first group of rolling wheels and a supporting shaft of the second group of rolling wheels are eccentric shafts with rotational positions adjustable, and the first group of rolling wheels and the second group of rolling wheels abut to the guide rail in the driving sliding seat.
Furthermore, the first chain driving mechanism and the second chain driving mechanism are simultaneously in a driving manner connected with the same reducer arranged on the base outside the device cabin, and the reducer is in a transmission manner connected with a motor arranged on a motor platform, wherein the motor platform is located above the base and spaced apart from the base.
Compared to single belt roller in the prior art, the pumping unit of the invention reduces the bending degree in a unit of length for the loading belt, and prolongs the service life of the belt, by providing the first belt roller and the second belt roller. In a windy environment, the loading belt is prone to swinging due to its windward area, and the pumping rod also swings along with it, which is really detrimental to oil pumping facilities. By providing the four-column tower-type structure, the windproof guide rail and the guide wheel, the influence of wind load during pumping can be avoided, and the reliability of the device can be increased.
In addition to the objects, features and advantages as described above, other objects, features and advantages of the invention will be further described in conjunction with the accompanying drawings.
Brief description of the drawings The accompanying drawings, which constitute a part of this specification and provide a further understanding of the invention, illustrate preferred embodiments of the invention, and serve to explain the principles of the invention together with the specification. In the drawings:
Fig. 1 is a side schematic view of a tower-type double-chain belt pumping unit according to the invention;
Fig. 2 is a front schematic view of the tower-type double-chain belt pumping unit according to the invention;
Fig. 3 is a side schematic view of the tower-type double-chain belt pumping unit according to the invention, illustrating chain driving mechanisms and a balance box in a device cabin;
Fig. 4 is a side schematic view of the tower-type double-chain belt pumping unit according to the invention, illustrating that the balance box is located in the lowest position and in the highest position;
Fig. 5 is a schematic view of a driving mode of the tower-type double-chain belt pumping unit according to the invention;
Fig. 6 is a front schematic view of the balance box according to the invention;
Fig. 7 is a side schematic view of the balance box according to the invention;
Fig. 8 is a schematic view of connection relationship between a tackle of the balance box and said chain according to the invention;
Fig. 9 is a front schematic view of the tackle of the balance box according to the invention;
Fig. 10 is a top schematic view of the tackle of the balance box according to the invention;
Fig. 11 is a schematic plan view of a loading belt according to the invention;
Fig. 12 is a structural schematic view of the loading belt according to the invention; and Fig. 13 is a structural schematic view of a brake system according to the invention.
List of reference signs tower bracket 11 base 12 upright column 13 cross beam 14 first belt roller 15 second belt roller 16 device cabin 17 windproof guide rail 18_ motor platform 20 loading belt 21 inside end 22 outside end 23 guide wheel 24 hinge support 25 bolt 26 rope hanger 30 balance box 40 first chain driving mechanism 40' second chain driving mechanism 50 reducer 60 motor 70 brake system 71 brake disc 72 first brake caliper 73 second brake caliper 74 manual regulation rod 75 automatic regulation rod 101 maintenance platform 102 climbing ladder 103 web 41 lower sprocket 42 upper sprocket 43 annular chain 44 supporting seat 31 counterweight portion 32 driving sliding seat 33 first guiding wheel group 34 second guiding wheel group 321 sliding cavity 35 first tackle 36 second tackle 311 counterweight groove 37 position adjustment mechanism 351 tackle body , 352 tapered hole cavity 353 driving shaft 354 chain link 355 first group of rolling wheels 356 second group of rolling wheels 357 third group of rolling wheels 358 fourth group of rolling wheels 351a elastic clip holder 359 eccentric shaft Detailed description of the invention The invention is described in detail below in conjunction with the accompanying drawings, however the invention can be embodied in various ways defined and encompassed by claims.
Figs.1 to 5 are structural schematic views of a belt pumping unit according to an embodiment of the invention. Referring to Fig. 1 and Fig. 5, the tower-type double-chain belt pumping unit of the invention includes: a tower bracket 10, including a base 11, upright columns 12 arranged in rectangular form on the base 11 and cross beams 13 connected between the upright columns 12, the top of the tower bracket 10 is provided with a first belt roller 14 and a second belt roller 15 spaced in parallel apart from each other, one side of the tower bracket 10 where the second belt roller 15 is located is provided with an erect device cabin 16, and the side of the tower bracket where the first belt roller 14 is located is provided with a vertically extending windproof guide rail 17; and a loading belt 20, spanning over the first belt roller 14 and the second belt roller 15, and including an inside end 21 located in the device cabin 16 of the tower bracket 10 and an outside end 22 extending outside the tower bracket 10, wherein the outside end 22 forms a rope hanger, which is provided with a guide wheel 23 mated with the windproof guide rail 17, wherein a balance box 30 connected with the inside end 21 of the loading belt 20, and a first chain driving mechanism 40 and a second chain driving mechanism 40' for driving the lifting movement of the balance box 30 are arranged in the device cabin 16.
Compared to single belt roller in the prior art, the pumping unit of the invention reduces the bending degree in a unit of length, and prolongs the service life of the belt, by providing the first belt roller and the second belt roller. In a windy environment, the loading belt is prone to swinging due to a certain windward area thereof, and the pumping rod also swings along with it, which is really detrimental to pumping facilities.
By arranging the windproof guide rail and the guide wheel, the influence of wind load during pumping can be avoided, and the reliability of the device can be increased. In the existing belt pumping unit, the rack is only provided with the device cabin, without other parts, so the tower bracket mentioned in the invention cannot be formed, and it is not convenient for use and maintenance. In the invention, the tower bracket adopted has reliable structure as well as easy use and maintenance.
Compared to single chain transmission in the prior art, the pumping unit of the invention has more reasonably force exerted thereon, operates more smoothly, prolongs the service life of the device and reduces noise. With the four-column tower-type structure, the stability and reliability of the device can be improved greatly.
The tower-type double-chain belt pumping unit of the invention also includes a reducer 50 arranged on the base 11 outside the device cabin 16 and a motor 60 arranged on a motor platform 18 and connected with the reducer 50 in a transmission manner, wherein the motor platform 18 is distanced from the base 11, with belt transmission therebetween.
The tower-type double-chain belt pumping unit of the invention also includes a brake system 70, as shown in Fig. 13. The brake system 70 includes a brake disc 71, a first brake caliper 72 and a second brake caliper 73 arranged on the outer perimeter of the brake disc 71. The first brake caliper 72 is operated by a manual regulation rod 74 to realize the function of manual braking, and the second brake caliper 73 is operated by an automatic regulation rod 75 to conform to the occasion that automatic braking is required due to excess and deficiency of speed of the reducer.
In the above, the tower bracket 10 is provided with multiple layers of maintenance platforms 101, and a climbing ladder 102 is arranged to the tower bracket 10, on at least one of both sides of the loading belt.
In the above, crosswise webs 103 are arranged between the upright columns on the side of the tower bracket where the first belt roller 14 is located, and the windproof guide rail 17 is supported on the cross beams 13 and the webs 103.
In the above, the first chain driving mechanism 40 includes a lower sprocket 41, an upper sprocket 42 and an annular chain 43. The upper sprocket 42 is supported on a sprocket supporting seat 44. It should be noted that the positions of the upper sprocket and the lower sprocket of the first chain driving mechanism are fixed and only the chain is annularly rotatable. Preferably, a rotatable tensioner is connected between each of the lower sprocket 41 and an output shaft of the reducer 50 to realize the requirement for simultaneous installation of the first chain driving mechanism 40 and the first chain driving mechanism 40'.
Fig. 6 and Fig. 7 are structural schematic views of a balance box according to the invention. As shown in Fig. 6 and Fig. 7, the balance box 30 includes a counterweight portion 31 connected with the inside end of the loading belt 20, a driving sliding seat 32 located below the counterweight portion 31, a first guiding wheel group 33 arranged on the left and right sides of the counterweight portion 31 for limiting left-right swinging, and a second guiding wheel group 34 arranged on the left and right sides of the counterweight portion 31 for limiting forward-backward swinging, wherein a first tackle 35 synchronously movably connected with a chain of the first chain driving mechanism 40 and a second tackle 36 synchronously movably connected with a chain of the second chain driving mechanism 40' are arranged in a sliding cavity 321 of the driving sliding seat 32.
In the above, the first guiding wheel group 33 includes guiding wheels respectively arranged on the top left, bottom left, top right and bottom right positions.
The second guiding wheel group 34 includes guiding wheels respectively arranged on the top left, bottom left, top right and bottom right positions. There are two guiding wheels on each position of the second guiding wheel group 34, arranged along the forward and backward direction, one limiting forward swinging, and the other limiting backward swinging.
Preferably, each guiding wheel of the first guiding wheel group 33 and the second guiding wheel group 34 is adjustable relative to the position of guide contact surface thereof. Specific methods may be as follows: the guiding wheel is installed on a swing arm, and the position of the guiding wheel is adjusted by regulating the swinging angle of the swing arm.
Preferably, the counterweight portion 31 includes a plurality of counterweight grooves 311 arranged in parallel for accommodating counterweights, each counterweight groove 311 extending along a vertical direction. The height of the counterweight portion 31 is 3 to 5 times of the height of the driving sliding seating 32.
The bottom of the device cabin 16 is provided with a position adjustment mechanism 37 of the balance box 30.
Also as shown in Fig. 5 and Fig. 8, the first chain driving mechanism 40 and the second chain driving mechanism 40' are also located in the device cabin, in the front of the counterweight portion 31, synchronously driven by the same reducer, and the chain transmission and the speed of the first chain driving mechanism 40 and the second chain driving mechanism 40' are totally identical.
Fig. 9 and Fig. 10 are structural schematic views of the tackle of the balance box according to the invention. As shown in Fig. 9 and Fig. 10, the tackle 35 (the structure of the tackle 36 is the same as that of the tackle 35) includes a tackle body 351, a driving shaft 353 freely rotatably supported in a tapered hole cavity 352 of the tackle body 351, a chain link 354 on one side of the driving shaft 353, a first group of rolling wheels 355 and a second group of rolling wheels 356 horizontally arranged on the upper part of the tackle body 351, a third group of rolling wheels 357 and a fourth group of rolling wheels 358 horizontally arranged on the lower part of the tackle body 351.
In use, the first group of rolling wheels 355, the second group of rolling wheels 356, the third group of rolling wheels 357 and the fourth group of rolling wheels 358 respectively come into contact with sliding rails in the sliding cavity 321 of the sliding seat 32, and in such a way, the first tackle and the second tackle only move in a horizontal direction.
A supporting shaft 359 of the first group of rolling wheels 355 is an eccentric shaft adjustable in the position. The supporting shaft 359 is clamped and fixed by an elastic clip holder 351a of the tackle body 351. During commissioning, the eccentric shaft 359 rotates by loosening the bolt on the elastic clip holder 351a, so that the first group of rolling wheels 355 are clung and in contact to the guide rail in the sliding cavity 321 to realize the tensioning function. The structure of the supporting shaft of the second group of rolling wheels 356 is the same as that of the supporting shaft of the first group of rolling wheels 355, achieving the function of making the rolling wheel self-tension the guide rail.
Fig. 11 and Fig. 12 are structural schematic views of the loading belt according to the invention. As shown in Fig. 11 and Fig. 12, the inside end 21 of the loading belt 20 is fixedly connected with a hinge support 24 through a plurality of bolts 25, the end of each bolt 25 is tapered to avoid reducing its connection strength due to belt fibre breakage during knocking into the belt. The outside end 22 of the loading belt 20 is fixedly connected with the rope hanger 26 through a plurality of bolts, the inner side of the rope hanger 26 forms the guide wheel 23, and the end of each bolt is also tapered to avoid reducing its strength due to belt fibre breakage.
The above is only the preferred embodiment of the invention and not intended to limit the invention. For those skilled in the art, various changes and variations can be made to the invention. Any modifications, equivalent replacements, improvements and the like within the spirit and principle of the invention shall fall within the scope of protection of the invention.
Claims (11)
1. A tower-type double-chain belt pumping unit, comprising:
a tower bracket (10), wherein the top of the tower bracket is provided with a first belt roller (14) and a second belt roller (15) spaced in parallel apart from each other, one side of the tower bracket (10) where the second belt roller (15) is located is provided with an erect device cabin (16), and the side of the tower bracket (10) where the first belt roller (14) is located is provided with a vertically extending windproof guide rail (17); and a reciprocating loading belt (20), spanning over the first belt roller (14) and the second belt roller (15), and comprising an inside end (21) located in the device cabin (16) of the tower bracket (10) and an outside end (22) extending outside the tower bracket (10), wherein the outside end (22) is provided with a rope hanger (26) for connecting a pumping rod, and the rope hanger (26) is provided with a guide wheel (23) mated with the windproof guide rail (17), wherein a balance box (30) connected with the inside end of the loading belt (20) and a first chain driving mechanism (40) and a second chain driving mechanism (40') for driving the lifting movement of the balance box (30) are arranged in the device cabin (16).
a tower bracket (10), wherein the top of the tower bracket is provided with a first belt roller (14) and a second belt roller (15) spaced in parallel apart from each other, one side of the tower bracket (10) where the second belt roller (15) is located is provided with an erect device cabin (16), and the side of the tower bracket (10) where the first belt roller (14) is located is provided with a vertically extending windproof guide rail (17); and a reciprocating loading belt (20), spanning over the first belt roller (14) and the second belt roller (15), and comprising an inside end (21) located in the device cabin (16) of the tower bracket (10) and an outside end (22) extending outside the tower bracket (10), wherein the outside end (22) is provided with a rope hanger (26) for connecting a pumping rod, and the rope hanger (26) is provided with a guide wheel (23) mated with the windproof guide rail (17), wherein a balance box (30) connected with the inside end of the loading belt (20) and a first chain driving mechanism (40) and a second chain driving mechanism (40') for driving the lifting movement of the balance box (30) are arranged in the device cabin (16).
2. The tower-type double-chain belt pumping unit according to claim 1, wherein the balance box (30) comprises a counterweight portion (31) connected with the inside end (21) of the loading belt (20), a driving sliding seat (32) located below the counterweight portion (31), a first guiding wheel group (33) arranged on the left and right sides of the counterweight portion (31) for limiting left-right swinging, and a second guiding wheel group (34) arranged on the left and right sides of the counterweight portion (31) for limiting forward-backward swinging, wherein a first tackle (35) synchronously movably connected with a chain of the first chain driving mechanism (40) and a second tackle (36) synchronously movably connected with a chain of the second chain driving mechanism (40') are arranged in the driving sliding seat (32).
3. The tower-type double-chain belt pumping unit according to claim 2, wherein each guiding wheel of the first guiding wheel group (33) and of the second guiding wheel group (34) is adjustable relative to the position of guide contact surface thereof.
4. The tower-type double-chain belt pumping unit according to claim 2, wherein the counterweight portion (31) comprises a plurality of counterweight grooves (311) arranged in parallel for accommodating counterweights, each counterweight groove (311) extending along a vertical direction.
5. The tower-type double-chain belt pumping unit according to claim 1, wherein a climbing ladder (102) is arranged to the tower bracket (10) on at least one of both sides of the loading belt (20).
6. The tower-type double-chain belt pumping unit according to claim 1, wherein the tower bracket (10) is provided with multiple layers of maintenance platforms (101).
7. The tower-type double-chain belt pumping unit according to claim 1, wherein the tower bracket (10) comprises a base (11), upright columns (12) arranged in rectangular form on the base (11) and cross beams (13) arranged between the upright columns (12), crosswise webs (103) are arranged between the upright columns (12) on the side of the tower bracket (10) on one side of the first belt roller (14), and the windproof guide rail (17) is supported on the cross beams (13) and the webs (103).
8. The tower-type double-chain belt pumping unit according to claim 2, wherein each of the first tackle (35) and the second tackle (36) comprises a tackle body (351), a driving shaft (353) freely rotatably supported in a tapered hole cavity (352) of the tackle body (351), a chain link (354) on one side of the driving shaft (353), a first group of rolling wheels (355) and a second group of rolling wheels (356) horizontally arranged above the driving shaft (353), a third group of rolling wheels (357) and a fourth group of rolling wheels (358) horizontally arranged below the driving shaft (353).
9. The tower-type double-chain belt pumping unit according to claim 8, wherein both a supporting shaft of the first group of rolling wheels (355) and a supporting shaft of the second group of rolling wheels (356) are eccentric shafts (359) with rotational positions adjustable, and the first group of rolling wheels (355) and the second group of rolling wheels (356) abut to the guide rail in the driving sliding seat (32).
10. The tower-type double-chain belt pumping unit according to claim 1, wherein the first chain driving mechanism (40) and the second chain driving mechanism (40') are simultaneously in a driving manner connected with the same reducer (50) arranged on the base (11) outside the device cabin (16), and the
11 reducer (50) is in a transmission manner connected with a motor (60) arranged on a motor platform (18), wherein the motor platform (18) is located above the base (11) and spaced apart from the base (11).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120292730.5 | 2011-08-12 | ||
| CN201120292730.5U CN202249964U (en) | 2011-08-12 | 2011-08-12 | Pulley assembly |
| PCT/CN2012/075397 WO2013023466A1 (en) | 2011-08-12 | 2012-05-11 | Tower-type double-chain belt oil pumping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2808602A1 true CA2808602A1 (en) | 2013-02-21 |
Family
ID=46111223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2808602A Abandoned CA2808602A1 (en) | 2011-08-12 | 2012-05-11 | Tower-type double-chain belt pumping unit |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140234126A1 (en) |
| CN (1) | CN202249964U (en) |
| CA (1) | CA2808602A1 (en) |
| WO (1) | WO2013023466A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996102B (en) * | 2011-09-10 | 2017-10-10 | 顾心怿 | The oil pumper that gear moves reciprocatingly on rack |
| WO2017065999A2 (en) * | 2015-10-12 | 2017-04-20 | 3M Innovative Properties Company | Ferrules, alignment frames and connectors |
| CN106437627B (en) * | 2016-08-30 | 2023-03-21 | 新疆永升聚元石油机械有限公司 | Double-abdication vertical type supporting suspended weight assembly and double-abdication vertical type chain oil pumping unit |
| CN108533230B (en) * | 2018-07-14 | 2024-02-13 | 克拉玛依市圣起钻采设备有限责任公司 | Tower type chain drive oil pumping unit |
| CN109707346A (en) * | 2018-11-21 | 2019-05-03 | 沈阳人和机电工程设备有限公司 | A kind of moveable pumping unit of counterweight center of gravity |
| CN211648945U (en) * | 2020-01-21 | 2020-10-09 | 德瑞石油装备（青岛）有限公司 | Lifting mechanism of belt type oil pumping unit |
| CN113090230B (en) * | 2021-03-01 | 2023-07-04 | 西安方元明科技股份有限公司 | Intelligent control energy-saving pumping unit with upward and downward stroke current approaching 1 infinitely based on electric cylinder |
| CN117514087B (en) * | 2024-01-05 | 2024-03-19 | 山东博康石油工程技术有限公司 | Stable belt pumping unit for oil field |
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| US2351183A (en) * | 1941-11-25 | 1944-06-13 | Luther A Blackburn | Long stroke deep oil well pumping jack unit |
| US3153387A (en) * | 1963-03-14 | 1964-10-20 | E V A G Soc Di Responsabilidad | Pumping unit |
| US3285081A (en) * | 1965-04-13 | 1966-11-15 | United States Steel Corp | Well-pumping apparatus |
| US3528305A (en) * | 1968-09-27 | 1970-09-15 | United States Steel Corp | Well pumping apparatus |
| US3695117A (en) * | 1970-06-17 | 1972-10-03 | United States Steel Corp | Long stroke pumping unit |
| US4456060A (en) * | 1980-06-05 | 1984-06-26 | Nujack Oil Pump Corporation | Method for pumping a liquid from a well and apparatus for use therein |
| US4391155A (en) * | 1982-06-28 | 1983-07-05 | Bender Emil A | Reciprocating drive and reversing mechanism for long stroke, well pumping unit |
| US4519262A (en) * | 1983-04-29 | 1985-05-28 | Baker Oil Tools, Inc. | Positive engagement safety mechanism and lift belt construction for long stroke, well pumping unit |
| US4719811A (en) * | 1985-02-25 | 1988-01-19 | Rota-Flex Corporation | Well pumping unit with counterweight |
| US4916959A (en) * | 1988-02-22 | 1990-04-17 | Gordon R. Lively | Long stroke well pumping unit with carriage |
| CN1031354C (en) * | 1992-07-05 | 1996-03-20 | 胜利石油管理局采油工艺研究院 | Chain-type long stroke pumping unit |
| CN1098965C (en) * | 1999-08-27 | 2003-01-15 | 卢旭 | Full-autometic oil producing unit |
| CN2463561Y (en) * | 2001-01-17 | 2001-12-05 | 徐长青 | Full balance chain pulley driving vertical beam-pumping unit |
| CN1752406B (en) * | 2005-10-28 | 2013-10-23 | 大庆油田有限责任公司 | Single crank double stroke flexible rope beam-pumping unit |
| CN2874065Y (en) * | 2006-02-24 | 2007-02-28 | 鞍山田峰机械制造有限公司 | Closed long stroke oil pump |
| CN2931777Y (en) * | 2006-06-22 | 2007-08-08 | 东营胜利高原有限公司 | Intelligent wide belt type pumping unit |
| CN100472029C (en) * | 2006-11-17 | 2009-03-25 | 中国石化集团胜利石油管理局运输总公司 | Annular rack type pumping machine |
| CN201013319Y (en) * | 2007-02-11 | 2008-01-30 | 辽宁省盘锦橡塑机械厂 | Double-chain driven straightly reciprocating single head sheave load-carrying pumping unit |
| CN201180530Y (en) * | 2008-01-23 | 2009-01-14 | 董少明 | Transmission mechanism of closed box oil pumping machine |
| CN201190530Y (en) * | 2008-05-06 | 2009-02-04 | 南京九竹科技实业有限公司 | Railless baseboard adjusting device |
| CN201391290Y (en) * | 2009-04-16 | 2010-01-27 | 温州华斯特环保设备有限公司 | Vertical belt pumping unit |
| CN201535157U (en) * | 2009-09-18 | 2010-07-28 | 山东胜利石油石化装备研究中心 | Chain pumping unit |
| CN201687445U (en) * | 2010-06-07 | 2010-12-29 | 温州华斯特环保设备有限公司 | Double-chain synchronous vertical belt pumping unit |
| CN102996102B (en) * | 2011-09-10 | 2017-10-10 | 顾心怿 | The oil pumper that gear moves reciprocatingly on rack |
-
2011
- 2011-08-12 CN CN201120292730.5U patent/CN202249964U/en not_active Expired - Fee Related
-
2012
- 2012-05-11 US US13/819,081 patent/US20140234126A1/en not_active Abandoned
- 2012-05-11 CA CA2808602A patent/CA2808602A1/en not_active Abandoned
- 2012-05-11 WO PCT/CN2012/075397 patent/WO2013023466A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013023466A1 (en) | 2013-02-21 |
| US20140234126A1 (en) | 2014-08-21 |
| CN202249964U (en) | 2012-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20141229 |
|
| FZDE | Discontinued |
Effective date: 20170511 |