CN220816125U - Spring energy storage cylinder for hydraulic pumping unit - Google Patents
Spring energy storage cylinder for hydraulic pumping unit Download PDFInfo
- Publication number
- CN220816125U CN220816125U CN202322720906.8U CN202322720906U CN220816125U CN 220816125 U CN220816125 U CN 220816125U CN 202322720906 U CN202322720906 U CN 202322720906U CN 220816125 U CN220816125 U CN 220816125U
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- China
- Prior art keywords
- piston
- energy storage
- cylinder body
- spring
- pumping unit
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- 238000004146 energy storage Methods 0.000 title claims abstract description 30
- 238000005086 pumping Methods 0.000 title claims abstract description 26
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 description 15
- 238000005381 potential energy Methods 0.000 description 10
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The utility model relates to a spring energy storage cylinder for a hydraulic pumping unit, which relates to an energy storage cylinder, wherein an oil outlet is arranged at the upper part of the side surface of the cylinder body, a piston is arranged in the cylinder body and is sealed by the piston, the piston is connected with a piston rod, the piston rod is connected with a pressing plate and moves up and down with the pressing plate, a bottom plate of the cylinder body is connected with the pressing plate and the bottom plate through a support column, a spring group is arranged between the pressing plate and the bottom plate and is sleeved on the support column and the guide column at the two sides, an exhaust hole is arranged on the bottom plate of the cylinder body, and the bottom plate and the piston rod are sealed by a rod end.
Description
Technical Field
The utility model relates to an energy storage oil cylinder. In particular to a spring energy storage cylinder for a hydraulic pumping unit.
Background
The hydraulic pumping unit has the functions that the hydraulic oil cylinder drives the pumping rod to reciprocate up and down, and the pumping rod drives the piston of the underground oil pump to reciprocate, so that the purpose of pumping is realized. The hydraulic sucker rod is driven by the oil pump to move upwards and driven by gravity downwards. However, in order to control the down-travel speed, the oil pump is required to provide a certain power to control the down-travel speed. And potential energy generated by the gravity of the sucker rod during descending is generally stored through an energy accumulator to provide certain energy for the next upstroke. At present, two energy storage modes of the hydraulic pumping unit exist, namely a counterweight method (counterweight is used for storing potential energy) are adopted; one is to store energy with a bellows type hydraulic accumulator.
The weight of the counterweight is matched with that of the sucker rod, and the weight of the sucker rod is generally different from several tons to more than ten tons (generally depending on the well depth), so that the counterweight is huge in volume, and the counterweight needs to reciprocate up and down, so that the adjustability is poor, the occupied area is large, the cost is high, and the safety is low in actual production. The hydraulic accumulator has small volume and convenient use, but the leather bag is easy to age, has short service life, stores energy by compressed high-pressure nitrogen, is greatly influenced by external temperature change, and simultaneously has the risks of leakage and explosion by using high-pressure gas.
Disclosure of Invention
The utility model aims to solve the existing energy storage problem in the operation of a hydraulic pumping unit, and provides a spring energy storage cylinder for the hydraulic pumping unit, which stores energy by compressing a spring through a hydraulic oil cylinder, so that the volume of energy storage equipment is reduced, and the safety risk is eliminated.
The technical scheme of the utility model is as follows: the utility model provides a spring energy storage jar for hydraulic pumping unit, includes cylinder body (1), oil inlet (2), piston (12), piston seal (3), piston rod (9), rod end seal (11), exhaust hole (10), clamp plate (8), support column (4), guide post (5), spring group (6), bottom plate (7), its characterized in that: the cylinder body (1) side upper portion is provided with oil inlet (2), there is piston (12) in cylinder body (1), piston (12) are sealed through piston seal (3), piston (12) are connected with piston rod (9), outside cylinder body (1) is stretched out to piston rod (9) part, piston rod (9) are fixed on clamp plate (8), clamp plate (8) downside connection spring group (6), spring group (6) bottom is fixed on bottom plate (7), bottom plate (7) and the bottom plate of cylinder body (1) pass through support column (4) fixed connection, evenly set up guide post (5) between both sides support column (4), spring group (6) cup joint on guide post (5) and support column (4), cylinder body (1) lower plate is equipped with exhaust hole (10), seal through rod end seal (11) between lower plate and the piston rod.
The width of the pressing plate (8) is larger than the distance between the two support columns (4).
The number of the inner holes of the pressing plate (8) corresponds to the number of the spring groups (6).
The beneficial technical effects of the utility model are as follows: the existing spring energy storage oil cylinder is characterized in that springs are arranged at the bottom of an elongated cylinder, most of the springs can only be matched with 1 group of springs due to the constraint of elongated steel, the lower structure of the elongated cylinder is modified, multiple groups of springs can be added according to the needs, and because the area is enlarged, the stroke is reduced, the elastic potential energy of the springs is better, and the energy storage effect is better. Because the inlet of the hydraulic motor of the hydraulic pumping unit is provided with the pressure provided by the spring energy storage cylinder, the motor driving the hydraulic motor can push the sucker rod to move upwards only by small power output, thereby achieving the purpose of energy saving.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic diagram of the working principle of the present utility model.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a spring energy storage jar for hydraulic pumping unit, including cylinder body 1, oil inlet 2, piston 12, piston seal 3, piston rod 9, rod end seal 11, exhaust hole 10 down, clamp plate 8, support column 4, guide post 5, spring group 6, bottom plate 7, wherein, cylinder body 1 side upper portion is provided with oil inlet 2, there is piston 12 in the cylinder body 1, piston 12 passes through piston seal 3 and seals, piston 12 is connected with piston rod 9, piston rod 9 partly stretches out outside cylinder body 1, piston rod 9 carries clamp plate 8 up-and-down motion, be provided with the hole on the clamp plate 8, the diameter of hole cooperates with the external diameter of guide post 5 and support post 4, support post and guide post, not only be used for fixed spring group, can also play the guide effect to the clamp plate, guarantee that the clamp plate is steady when moving along with the piston rod, cylinder body 1's bottom plate passes through support post 4 and connects clamp plate 8 and bottom plate 7, be equipped with spring group 6 between clamp plate 8 and the bottom plate 7, spring group 6 cover is on both sides support post 4 and guide post 5, cylinder body 1 bottom plate is equipped with exhaust hole 10 down, seal 11 between bottom plate and the piston rod.
When the hydraulic oil pumping machine moves in the downstroke, the pressure generated by the gravitational potential energy of the sucker rod is transmitted to the spring energy storage oil cylinder through hydraulic oil and acts on the spring energy storage cylinder piston 12, so that the piston 12 generates pressure and descends, the pressure is transmitted to the pressing plate 8 through the piston rod 9, the pressing plate 8 moves downwards along the guide column 5 and the support column 4, and the compression spring group 6 starts to convert the gravitational potential energy of the sucker rod in the downstroke into elastic potential energy and stores the elastic potential energy in the spring group 6. Because the gravitational potential energy generated by the descending of the sucker rod is gradually reduced along with the increase of the descending travel under the action of buoyancy and friction force, the external force required by the compression spring is gradually increased along with the increase of the compression amount of the spring, when the two reach balance, the hydraulic motor of the hydraulic pumping unit is started to work together with the gravitational potential energy of the sucker rod, the compression spring group 6 is continuously compressed until reaching the set end point of the descending travel of the hydraulic pumping unit, at the moment, the spring energy storage cylinder stores all the gravitational potential energy of the descending sucker rod and the kinetic energy generated by the work of the hydraulic motor, when the hydraulic pumping unit starts to ascend in reversing, the spring energy storage cylinder starts to release the stored energy, the pressing plate 8 is pushed to ascend, the piston 12 is driven to ascend through the piston rod 9, high-pressure hydraulic oil in the spring energy storage cylinder is discharged, the hydraulic motor of the pumping unit is supplied with energy, and the oil cylinder of the hydraulic pumping unit is pushed to ascend. Because the inlet of the hydraulic motor of the hydraulic pumping unit is provided with the pressure provided by the spring energy storage cylinder, the motor driving the hydraulic motor can push the sucker rod to move upwards only by small power output, thereby achieving the purpose of energy saving. The working principle is shown in figure 2.
Parameters of the spring energy storage oil cylinder: in actual work, because the maximum load of each oil well is different, different parameters of the spring energy storage oil cylinder can be selected according to the load of the oil well, and the initial pressure of the spring energy storage oil cylinder is regulated by the total oil charge amount of the hydraulic motor of the hydraulic pumping unit to the spring energy storage cylinder so as to achieve the optimal energy storage effect.
Setting: hydraulic pumping unit working cylinder piston area = S 0; maximum load=f
Piston area s=ks 0------------ k=8 to 10 of spring-loaded cylinder
Piston stroke h=1/k×h of spring-loaded cylinder 0
Total spring force n=kf of spring energy storage cylinder
Maximum compression x=fh=f=0.6 to 0.8
Single spring force = N
Total number of spring groups n=f/N.
Claims (3)
1. The utility model provides a spring energy storage jar for hydraulic pumping unit, includes cylinder body (1), oil inlet (2), piston (12), piston seal (3), piston rod (9), rod end seal (11), exhaust hole (10), clamp plate (8), support column (4), guide post (5), spring group (6), bottom plate (7), its characterized in that: the cylinder body (1) side upper portion is provided with oil inlet (2), there is piston (12) in cylinder body (1), piston (12) are sealed through piston seal (3), piston (12) are connected with piston rod (9), outside cylinder body (1) is stretched out to piston rod (9) part, piston rod (9) are fixed on clamp plate (8), clamp plate (8) downside connection spring group (6), spring group (6) bottom is fixed on bottom plate (7), bottom plate (7) and the bottom plate of cylinder body (1) pass through support column (4) fixed connection, evenly set up guide post (5) between both sides support column (4), spring group (6) cup joint on guide post (5) and support column (4), cylinder body (1) lower plate is equipped with exhaust hole (10), seal through rod end seal (11) between lower plate and the piston rod.
2. The spring energy storage cylinder for a hydraulic pumping unit according to claim 1, wherein: the width of the pressing plate (8) is larger than the distance between the two support columns (4).
3. The spring energy storage cylinder for a hydraulic pumping unit according to claim 1, wherein: the number of the inner holes of the pressing plate (8) corresponds to the number of the spring groups (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322720906.8U CN220816125U (en) | 2023-10-11 | 2023-10-11 | Spring energy storage cylinder for hydraulic pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322720906.8U CN220816125U (en) | 2023-10-11 | 2023-10-11 | Spring energy storage cylinder for hydraulic pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220816125U true CN220816125U (en) | 2024-04-19 |
Family
ID=90704027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322720906.8U Active CN220816125U (en) | 2023-10-11 | 2023-10-11 | Spring energy storage cylinder for hydraulic pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220816125U (en) |
-
2023
- 2023-10-11 CN CN202322720906.8U patent/CN220816125U/en active Active
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