CN113969886A - Tubular oil well pump - Google Patents
Tubular oil well pump Download PDFInfo
- Publication number
- CN113969886A CN113969886A CN202010711272.8A CN202010711272A CN113969886A CN 113969886 A CN113969886 A CN 113969886A CN 202010711272 A CN202010711272 A CN 202010711272A CN 113969886 A CN113969886 A CN 113969886A
- Authority
- CN
- China
- Prior art keywords
- hole
- pump
- valve ball
- valve
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 90
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 19
- 239000010779 crude oil Substances 0.000 description 14
- 238000000926 separation method Methods 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/06—Venting
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/20—Filtering
Abstract
The invention belongs to the technical field of oil collection, and relates to a tubular oil well pump which comprises a pump cylinder, a piston and a fixed valve, wherein the piston is arranged in the pump cylinder; the step hole is internally provided with a valve ball which can only open and close up and down along the radial direction, the outer circumferential surface of the valve ball is horizontally provided with a first annular groove, and a flexible sealing ring is arranged in the first annular groove. The invention replaces the sealing mode of the self-sealing of the steel ball of the existing tubular oil well pump with the double sealing mode of the mechanical rigid seal and the flexible material, and solves the problems that the oil liquid is lost when the existing oil well pump goes down, and the valve ball disturbs the liquid when going up, so that the liquid inlet amount is reduced, and the pump efficiency is reduced.
Description
Technical Field
The invention belongs to the technical field of petroleum collection, and relates to a tubular oil well pump.
Background
Petroleum has important contribution which is difficult to replace in the development of modern socioeconomic performance, has very wide functions and functions in the development of socioeconomic performance, and cannot be separated from petroleum and derivatives thereof in the fields of clothing, housing, industry, aerospace, military and the like.
The pipe oil pump is a sucker-rod oil pump, and features that after being assembled on ground, the working cylinder (outer cylinder and lining) is connected to the lower part of oil pipe and then set into well, the fixed valve is then set in and the piston is finally connected to the lower end of sucker rod string and set into the pump cylinder. The tubular pump has large pump diameter, large displacement, simple structure, low manufacture cost, thick pump barrel wall and large bearing capacity, so that the tubular pump is widely applied to various oil wells and oil fields.
The tubing pump is composed of working cylinder, piston, traveling valve and fixed valve. Wherein, the working barrel: comprises an outer pipe, a bushing and a compression coupling. A piston: is a hollow cylinder made of seamless steel tube, and both ends of the hollow cylinder are provided with threads so as to be convenient for connecting other parts. A traveling valve: also called discharge valve, which is composed of valve ball, valve seat and valve cover and is installed on the upper end of piston. A fixed valve: also called a suction valve, which consists of a valve seat, a valve ball and a valve cover and is arranged at the lower end of the piston.
The existing tubular oil well pump fixed valve adopts steel ball self-sealing type sealing, and has the disadvantages of slow opening and closing speed, low return precision and long return time, thereby causing crude oil liquid loss and low pump efficiency.
Therefore, the market urgently needs a high-efficiency tubular oil well pump with high opening and closing speed, high return precision and short return time.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a tubular oil well pump, which replaces the sealing mode of the existing steel ball self-sealing of the tubular oil well pump by a mechanical rigid sealing and flexible material double sealing mode, and solves the problems of crude oil liquid loss and low pump efficiency of the existing tubular oil well pump.
The technical scheme adopted by the invention for solving the technical problem is as follows: a kind of tube type oil-well pump, including pump cylinder 1, piston 2, standing valve 3, the piston 2 locates in pump cylinder 1, the standing valve 3 locates on pump cylinder 1 of the inferior part of the piston 2, the standing valve 3 includes valve block 301, adapter 302, the valve block 301 is tube-shaped and the inner wall has step holes of four-section type, the step hole of four-section type is the first step hole 303, the second step hole 304, the third step hole 305, the fourth step hole 306 from top to bottom separately; a fixing plate 307 is arranged in the first step hole 303, the fixing plate 307 is provided with a through hole 308, a shaft sleeve 309 is arranged in the through hole 308, a positioning shaft 310 which slides up and down along the axial direction is arranged in the shaft sleeve 309, and an oil outlet 311 is also arranged on the fixing plate 307 and used for liquid to enter and exit the first step hole 303 from the upper side; a valve ball 312 is arranged in the second stepped hole 304, the diameter of the second stepped hole 304 is equal to that of the valve ball 312, the depth of the second stepped hole 304 is smaller than the height of the valve ball 312, and the upper end of the valve ball 312 is fixedly connected with the lower end of the positioning shaft 310; a sealing sleeve 313 is arranged in the third stepped hole 305, the outer diameter of the sealing sleeve 313 is equal to the inner diameter of the third stepped hole 305, the inner diameter of the sealing sleeve 313 is smaller than the diameter of the valve ball 312, and the height of the sealing sleeve 313 is larger than the depth of the third stepped hole 305; a compressing end of the adapter 302 is arranged in the fourth stepped hole 306, and the compressing end of the adapter 302 compresses the lower end face of the sealing sleeve 313 upwards; the positioning shaft 310, the valve ball 312, the second stepped hole 304 and the sealing sleeve 313 are coaxial; the depth of the first stepped hole 303 is not less than the height of the valve ball 312, the diameter of the first stepped hole 303 is larger than the diameter of the valve ball 312, and the length of the positioning shaft 310 is not less than the depth of the first stepped hole 303.
Preferably, the outer circumferential surface of the valve ball 312 is horizontally provided with a first annular groove 314, a flexible sealing ring 315 is arranged in the first annular groove 314, and the first annular groove 314 is located at the maximum horizontal section of the valve ball 312.
Preferably, the sealing portion of the flexible sealing ring 315 contacting the second stepped hole 304 is provided with a plurality of sealing sheets 316 distributed horizontally in an annular shape, the sealing portion of the inner wall of the second stepped hole 304 contacting the flexible sealing ring 315 is provided with a taper 317, and the taper 317 is in a large opening direction.
Preferably, the outer circumferential surface of the sealing sleeve 313 is horizontally provided with a second annular groove 318, and a sealing ring 319 is arranged in the second annular groove 318.
Preferably, an inward circular chamfer 320 is arranged at the contact part of the upper part of the inner ring of the sealing sleeve 313 and the valve ball 312, and the radian of the circular chamfer 320 is the same as that of the valve ball 312.
Preferably, the positioning shaft 310 is provided with a blind hole 321 along the axial direction, and the blind hole 321 opens upwards.
Preferably, the outer wall of the pump barrel 1 is also surrounded and wrapped with an air-proof barrel 4, two ends of the air-proof barrel 4 are hermetically connected with the outer wall of the pump barrel 1, and a closed cylindrical space 41 is formed between the air-proof barrel 4 and the pump barrel 1; a first filter screen 42 and a second filter screen 43 which are horizontally distributed along the radial direction are arranged in the cylindrical space 41 from bottom to top to divide the cylindrical space 41 into three parts along the axial direction; a plurality of upper through holes 44 and a plurality of lower through holes 45 are respectively arranged at the upper side and the lower side of the outer wall of the pump barrel 1 in the cylindrical space 41, the upper through holes 44 and the lower through holes 45 are communicated with the cylindrical space 41 and the inner space of the pump barrel 1, the upper through holes 44 are positioned above the horizontal position of the second filter screen 43, and the lower through holes 45 are positioned below the horizontal position of the first filter screen 42; an impeller 46 is arranged between the first filter screen 42 and the second filter screen 43; the impeller 46 is provided with impeller blades 47, an impeller inner tile 48 and an impeller outer tile 49, the impeller blades 47 are fixedly connected with the outer wall of the impeller outer tile 49, the inner wall of the impeller outer tile 49 is rotatably connected with the outer wall of the impeller inner tile 48, and the inner wall of the impeller inner tile 48 is fixedly connected with the outer wall of the pump barrel 1.
Preferably, the upper through holes 44 are horizontally and uniformly distributed on the outer wall of the pump barrel 1, the lower through holes 45 are horizontally and uniformly distributed on the outer wall of the pump barrel 1, and the vertical distance between the upper through holes 44 and the lower through holes 45 is greater than the vertical height of the piston 2.
Preferably, the upper through hole 44 is inclined upward along the radial direction from outside to inside, and the lower through hole 45 is inclined downward along the radial direction from outside to inside.
Preferably, the lower through hole 45 is lower than the bottom dead center of the piston 2.
The invention has the beneficial effects that:
1. according to the invention, the ball valve of the fixed valve of the tubular oil well pump is contacted with the sealing sleeve, the sealing sleeve is provided with the concave fillet with the same radian as the ball valve, the primary rigid sealing of the ball valve is completed, the diameter of the ball valve and the aperture of the second step hole are set to be the same, the secondary rigid sealing is completed, the first annular groove is arranged at the maximum horizontal tangent plane of the ball valve, the flexible sealing ring with multiple layers of sealing sheets is arranged in the first annular groove, the taper matched with the flexible sealing ring is arranged at the second step hole, the reciprocating opening and closing of the ball valve in the second step hole are facilitated, meanwhile, the sealing of the flexible material is further increased, the combination of the mechanical rigid sealing and the double sealing of the flexible material is realized, the sealing performance of the fixed valve is greatly improved, the backflow of crude oil during the lower stroke is prevented, and the pump efficiency is improved;
2. according to the invention, the second annular groove is formed in the outer circumference of the sealing sleeve of the fixed valve of the tubular oil well pump, and the sealing ring is arranged in the second annular groove, so that crude oil is prevented from flowing back from the outer circumference of the sealing sleeve during downstroke after the pressing end of the adapter presses the lower end face of the sealing sleeve upwards, and the pump efficiency is further improved;
3. the positioning shaft is arranged on the valve ball of the fixed valve of the tubular oil well pump, the positioning shaft can slide up and down in a shaft sleeve of the fixed plate in a reciprocating manner, the positioning shaft is internally provided with a blind hole with an upward opening, crude oil flows upwards from an oil outlet during an upstroke, simultaneously the crude oil in the blind hole flows upwards, a vacuum-like cavity is formed in the blind hole during the stroke, power assisting the valve ball to move upwards and open a valve port is provided for the valve ball, the opening speed of the valve ball is increased, and when the valve ball moves downwards, the crude oil falls under the gravity and the piston downward pressure and forms a downward pressure in the blind hole to increase the closing speed of the valve ball for the power of the valve ball moving downwards and closing the valve port; and because the positioning shaft at the upper end of the valve ball can only slide in the shaft sleeve in a reciprocating manner, the limited valve ball can only be opened and closed up and down at the valve port, the return time is short, the return precision is high, the problem that the conventional valve ball rotates irregularly to disturb liquid and reduce the liquid inlet amount is solved, and the pump efficiency is further improved.
4. According to the invention, after oil-gas mixed liquid enters the pump barrel through the first filter screen of the gas-proof barrel, gas is primarily separated from the mixed liquid and partially flows upwards; meanwhile, the impeller is driven to rotate through the flowing of the mixed liquid, so that residual gas in the mixed liquid is stirred by the impeller, quickly separated again and flows upwards; carry out the separation for the third time when mixed liquid passes through the second filter screen, make the surplus gas in the mixed liquid quick separation once more and go to the upstream, through cubic gas-liquid separation in advance with the gas separation in the oil gas mixed liquid after via last through-hole discharge piston upper portion and then through exhaust apparatus discharge pump barrel, carry out the oil-gas separation step in advance for gas release speed, make the standing valve can open fast, improve the fullness of pump barrel, and then improved the pumping efficiency.
5. The upper through hole and the lower through hole of the gas-proof cylinder are provided with a certain inclination angle, so that gas can enter and exit the cylindrical space preferentially, the gas release speed is further increased, the fullness of the pump cylinder is improved, and the pump efficiency is improved again
6. The oil pump of the invention conforms to the GB/T18607 oil pump and the component specification thereof, ASME B1.1-2003 unifies the relevant regulations in British screw thread and oil pipe screw thread GB/T9253.2, and the existing tubular oil pump can be replaced without adding extra devices, so that the cost for replacing and installing the oil pump is lower, and the efficiency is higher.
Drawings
Figure 1 is a front view of a tubular pump;
FIG. 2 is a front cross-sectional view of the fixed valve;
FIG. 3 is a front cross-sectional view of the stationary valve body;
FIG. 4 is an enlarged partial view of the seal segment;
FIG. 5 is a front cross-sectional view of the air lock cylinder;
fig. 6 is a sectional view of the air-trap as viewed from the front side of the air-trap B.
In the figure: 1. a pump barrel; 2. a piston; 3. a fixed valve; 4. a gas-tight cylinder; 41. a cylindrical space; 42. a first filter screen; 43. a second filter screen; 44. an upper through hole; 45. a lower through hole; 46. an impeller; 47. impeller blades; 48. an impeller inner tile; 49. an impeller outer tile; 301. a body; 302. an adapter; 303. a first stepped bore; 304. a second stepped bore; 305. a third stepped bore; 306. a fourth stepped bore; 307. a fixing plate; 308. a through hole; 309. a shaft sleeve; 310. positioning the shaft; 311. an oil outlet hole; 312. a valve ball; 313. sealing sleeves; 314. a first annular groove; 315. a flexible sealing ring; 316. a plurality of sealing sheets; 317. tapering; 318. a second annular groove; 319. a seal ring; 320. rounding and chamfering; 321. and (4) blind holes.
Detailed Description
The related art in the present invention will be described clearly and completely with reference to the accompanying drawings in the following embodiments, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, a tubular oil well pump, includes a pump barrel 1, a piston 2, a standing valve 3, the piston 2 is disposed in the pump barrel 1, the standing valve 3 is disposed on the pump barrel 1 at the lower portion of the piston 2, the standing valve 3 includes a valve body 301 and an adapter 302, the valve body 301 is cylindrical and has a four-step stepped hole in its inner wall, the four-step stepped hole is a first stepped hole 303, a second stepped hole 304, a third stepped hole 305, and a fourth stepped hole 306 from top to bottom; a fixing plate 307 is arranged in the first step hole 303, the fixing plate 307 is provided with a through hole 308, a shaft sleeve 309 is arranged in the through hole 308, a positioning shaft 310 which slides up and down along the axial direction is arranged in the shaft sleeve 309, and an oil outlet 311 is also arranged on the fixing plate 307 and used for liquid to enter and exit the first step hole 303 from the upper side; a valve ball 312 is arranged in the second stepped hole 304, the diameter of the second stepped hole 304 is equal to that of the valve ball 312, the depth of the second stepped hole 304 is smaller than the height of the valve ball 312, and the upper end of the valve ball 312 is fixedly connected with the lower end of the positioning shaft 310; a sealing sleeve 313 is arranged in the third stepped hole 305, the outer diameter of the sealing sleeve 313 is equal to the inner diameter of the third stepped hole 305, the inner diameter of the sealing sleeve 313 is smaller than the diameter of the valve ball 312, and the height of the sealing sleeve 313 is larger than the depth of the third stepped hole 305; a compressing end of the adapter 302 is arranged in the fourth stepped hole 306, and the compressing end of the adapter 302 compresses the lower end face of the sealing sleeve 313 upwards; the positioning shaft 310, the valve ball 312, the second stepped hole 304 and the sealing sleeve 313 are coaxial; the depth of the first stepped hole 303 is not less than the height of the valve ball 312, the diameter of the first stepped hole 303 is larger than the diameter of the valve ball 312, and the length of the positioning shaft 310 is not less than the depth of the first stepped hole 303.
Further, a first annular groove 314 is horizontally formed in the outer circumferential surface of the valve ball 312, a flexible sealing ring 315 is arranged in the first annular groove 314, and the first annular groove 314 is located at the maximum horizontal section of the valve ball 312.
Furthermore, a sealing part of the flexible sealing ring 315, which is in contact with the second stepped hole 304, is provided with a plurality of sealing sheets 316 which are horizontally distributed in an annular shape, a sealing part of the inner wall of the second stepped hole 304, which is in contact with the flexible sealing ring 315, is provided with a taper 317, and the taper 317 is in a large opening direction.
Further, a second annular groove 318 is horizontally arranged on the outer circumferential surface of the sealing sleeve 313, and a sealing ring 319 is arranged in the second annular groove 318.
Furthermore, an inward circular chamfer 320 is arranged at the contact part of the upper part of the inner ring of the sealing sleeve 313 and the valve ball 312, and the radian of the circular chamfer 320 is the same as that of the valve ball 312.
Further, the positioning shaft 310 is provided with a blind hole 321 along the axial direction, and the blind hole 321 opens upwards.
Further, the outer wall of the pump barrel 1 is also surrounded and wrapped with an air-proof barrel 4, two ends of the air-proof barrel 4 are hermetically connected with the outer wall of the pump barrel 1, and a closed cylindrical space 41 is formed between the air-proof barrel 4 and the pump barrel 1; a first filter screen 42 and a second filter screen 43 which are horizontally distributed along the radial direction are arranged in the cylindrical space 41 from bottom to top to divide the cylindrical space 41 into three parts along the axial direction; a plurality of upper through holes 44 and a plurality of lower through holes 45 are respectively arranged at the upper side and the lower side of the outer wall of the pump barrel 1 in the cylindrical space 41, the upper through holes 44 and the lower through holes 45 are communicated with the cylindrical space 41 and the inner space of the pump barrel 1, the upper through holes 44 are positioned above the horizontal position of the second filter screen 43, and the lower through holes 45 are positioned below the horizontal position of the first filter screen 42; an impeller 46 is arranged between the first filter screen 42 and the second filter screen 43; the impeller 46 is provided with impeller blades 47, an impeller inner tile 48 and an impeller outer tile 49, the impeller blades 47 are fixedly connected with the outer wall of the impeller outer tile 49, the inner wall of the impeller outer tile 49 is rotatably connected with the outer wall of the impeller inner tile 48, and the inner wall of the impeller inner tile 48 is fixedly connected with the outer wall of the pump barrel 1.
Further, the upper through holes 44 are horizontally and uniformly distributed on the outer wall of the pump barrel 1, the lower through holes 45 are horizontally and uniformly distributed on the outer wall of the pump barrel 1, and the vertical distance between the upper through holes 44 and the lower through holes 45 is greater than the vertical height of the piston 2.
Further, the upper through hole 44 is inclined upward from the outside to the inside in the radial direction, and the lower through hole 45 is inclined downward from the outside to the inside in the radial direction.
Further, the lower through hole 45 is lower than the bottom dead center of the piston 2.
Examples
When the invention is used, when the oil well pump is pressed down by the down-stroke piston, because the crude oil falls under the gravity and the down-stroke pressure of the piston, a downward pressure is formed in the blind hole, the invention provides the power for the valve ball to move downwards and close the valve port, and increases the closing speed of the valve ball; and because the positioning shaft at the upper end of the valve ball can only slide in the shaft sleeve in a reciprocating manner, the limited valve ball can only be opened and closed up and down at the valve port, the return time is short, the return precision is high, therefore, when the lower stroke piston is pressed down, the valve ball is quickly and accurately returned to the closed position, at the moment, because the sealing sleeve is provided with the concave round angle with the same radian as the ball valve, the primary rigid sealing of the ball valve is completed, and then the secondary rigid sealing is completed by setting the diameter of the ball valve to be the same as the aperture of the second step hole, meanwhile, the flexible sealing ring with a plurality of layers of sealing sheets arranged in the first annular groove is matched with the taper arranged at the second step hole to finish flexible sealing, through the combination of the mechanical rigid seal and the double seal of the flexible material, the seal of the fixed valve of the tubular oil well pump is perfectly realized, and the backflow of crude oil during the down stroke is effectively prevented.
When the lower stroke piston is pressed downwards, oil-gas mixed liquid enters the cylindrical space through the lower through hole, so that the piston can smoothly reach the bottom dead center, meanwhile, due to the stirring effect of the first filter screen, the second filter screen and the impeller, most of gas in the oil-gas mixed liquid is subjected to oil-gas separation in advance, because the vertical distance between the upper through hole and the lower through hole is greater than the vertical height of the piston, and the lower through hole is lower than the bottom dead center of the piston, when the piston reaches the bottom dead center, the separated gas is released into a pump cylinder on the upper part of the piston through the upper through hole, when the piston is converted into an upper stroke from the lower stroke, the gas in the pump cylinder below the piston is completely released, so that when the piston moves upwards, the fixed valve can be quickly opened, crude oil is quickly filled into the upper pump cylinder along with the upward movement of the piston, and a new round of oil extraction operation is performed.
When the upstroke piston rises, because crude oil forms a vacuum-like cavity in the blind hole, provide the power that assists upwards and open the valve port for the valve ball, therefore the valve ball opens fast, crude oil gushes into first step downthehole and then upwards gushes out through from the oil outlet from bottom to top, and because valve ball upper end location axle can only be in the axle sleeve reciprocal slip, therefore the valve ball of restriction also can only open and shut from top to bottom at the valve port department, consequently, does not have that the condition that the valve ball can carry out irregular rotation and cause the disturbance to liquid when the upstroke liquid of tubular oil-well pump self-sealing standing valve gets into in the past and reduce the entering volume of liquid. After the up stroke is finished, the down stroke is started, the valve ball is quickly and accurately returned to be closed, and a new oil pumping circulation is started. The self-sealing valve ball has higher opening speed than the prior self-sealing valve ball, so that the pumped oil quantity is more, the pump efficiency is higher, and the sealing of the fixed valve of the tubular oil pump is perfectly realized by combining the mechanical rigid sealing and the double sealing of the flexible material, so the crude oil reflux quantity during the down stroke is far less than the pure rigid sealing of the prior self-sealing valve ball, and the pump efficiency is further improved.
In conclusion, the invention provides a tubular oil well pump, which replaces the sealing mode of the existing tubular oil well pump by the double sealing mode of mechanical rigid sealing and flexible material, and solves the problems of crude oil liquid loss and low pump efficiency of the existing tubular oil well pump, thus the invention has wide application prospect.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A tubular oil well pump comprises a pump cylinder (1), a piston (2) and a fixed valve (3), wherein the piston (2) is arranged in the pump cylinder (1), and the fixed valve (3) is arranged on the pump cylinder (1) at the lower part of the piston (2), and is characterized in that the fixed valve (3) comprises a valve body (301) and an adapter (302), the valve body (301) is in a cylinder shape, the inner wall of the valve body is provided with a four-section step hole, and the four-section step hole is respectively a first step hole (303), a second step hole (304), a third step hole (305) and a fourth step hole (306) from top to bottom;
a fixing plate (307) is arranged in the first step hole (303), a through hole (308) is formed in the fixing plate (307), a shaft sleeve (309) is arranged in the through hole (308), a positioning shaft (310) which slides up and down along the axial direction is arranged in the shaft sleeve (309), and an oil outlet (311) is formed in the fixing plate (307) and used for liquid to enter and exit the first step hole (303) from the upper side;
a valve ball (312) is arranged in the second stepped hole (304), the diameter of the second stepped hole (304) is equal to the diameter of the valve ball (312), the depth of the second stepped hole (304) is smaller than the height of the valve ball (312), and the upper end of the valve ball (312) is fixedly connected with the lower end of the positioning shaft (310);
a sealing sleeve (313) is arranged in the third stepped hole (305), the outer diameter of the sealing sleeve (313) is equal to the inner diameter of the third stepped hole (305), the inner diameter of the sealing sleeve (313) is smaller than the diameter of the valve ball (312), and the height of the sealing sleeve (313) is larger than the depth of the third stepped hole (305);
a compressing end of the adapter (302) is arranged in the fourth stepped hole (306), and the compressing end of the adapter (302) upwards compresses the lower end face of the sealing sleeve (313);
the positioning shaft (310), the valve ball (312), the second stepped hole (304) and the sealing sleeve (313) are coaxial; the depth of the first stepped hole (303) is not less than the height of the valve ball (312), the aperture of the first stepped hole (303) is greater than the diameter of the valve ball (312), and the length of the positioning shaft (310) is not less than the depth of the first stepped hole (303).
2. The tubular pump as claimed in claim 1, wherein the valve ball (312) has a first annular groove (314) horizontally formed on an outer circumferential surface thereof, a flexible sealing ring (315) is disposed in the first annular groove (314), and the first annular groove (314) is located at a maximum horizontal section of the valve ball (312).
3. The tubular oil well pump according to claim 2, wherein the sealing portion of the flexible sealing ring (315) contacting the second stepped hole (304) is provided with a plurality of sealing sheets (316) distributed horizontally in an annular shape, the sealing portion of the inner wall of the second stepped hole (304) contacting the flexible sealing ring (315) is provided with a taper (317), and the taper (317) is in the direction of the large opening.
4. The tubular oil well pump as claimed in claim 1, wherein the sealing sleeve (313) is horizontally provided with a second annular groove (318) on the outer circumferential surface, and a sealing ring (319) is arranged in the second annular groove (318).
5. The tubular oil well pump as claimed in claim 1, wherein a concave circular chamfer (320) is provided at a contact portion of the upper portion of the inner ring of the sealing sleeve (313) and the valve ball (312), and the radian of the circular chamfer (320) is the same as that of the valve ball (312).
6. The tubular pump as claimed in claim 1, wherein the positioning shaft (310) has a blind hole (321) along the axial direction, and the blind hole (321) opens upward.
7. The tubular oil well pump according to claim 1, characterized in that the outer wall of the pump cylinder (1) is further surrounded and wrapped with a gas-proof cylinder (4), two ends of the gas-proof cylinder (4) are hermetically connected with the outer wall of the pump cylinder (1) and a closed cylindrical space (41) is formed between the gas-proof cylinder (4) and the pump cylinder (1);
a first filter screen (42) and a second filter screen (43) which are horizontally distributed along the radial direction are arranged in the cylindrical space (41) from bottom to top to divide the cylindrical space (41) into three parts along the axial direction; a plurality of upper through holes (44) and a plurality of lower through holes (45) are respectively arranged on the upper side and the lower side of the outer wall of the pump barrel (1) in the cylindrical space (41), the upper through holes (44) and the lower through holes (45) are communicated with the cylindrical space (41) and the inner space of the pump barrel (1), the upper through holes (44) are located above the horizontal position of the second filter screen (43), and the lower through holes (45) are located below the horizontal position of the first filter screen (42);
an impeller (46) is arranged between the first filter screen (42) and the second filter screen (43); impeller (46) are equipped with impeller blade (47), impeller inner tile (48), outer tile of impeller (49), impeller blade (47) fastening connection the outer wall of outer tile of impeller (49), outer tile of impeller (49) inner wall rotates and connects inner tile of impeller (48) outer wall, the inner wall fastening connection outer wall of pump barrel (1) of impeller inner tile (48).
8. The air-tight device of the oil-well pump according to claim 7, characterized in that the upper through holes (44) are horizontally and uniformly distributed on the outer wall of the pump barrel (1), the lower through holes (45) are horizontally and uniformly distributed on the outer wall of the pump barrel (1), and the vertical distance between the upper through holes (44) and the lower through holes (45) is greater than the vertical height of the piston (2).
9. The air-tight device of the oil well pump according to claim 7, wherein the upper through hole (44) is inclined upward from outside to inside in the radial direction, and the lower through hole (45) is inclined downward from outside to inside in the radial direction.
10. The pump air-tight device according to claim 7, characterized in that the lower through hole (45) is lower than the bottom dead center of the piston (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010711272.8A CN113969886A (en) | 2020-07-22 | 2020-07-22 | Tubular oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010711272.8A CN113969886A (en) | 2020-07-22 | 2020-07-22 | Tubular oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113969886A true CN113969886A (en) | 2022-01-25 |
Family
ID=79584844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010711272.8A Pending CN113969886A (en) | 2020-07-22 | 2020-07-22 | Tubular oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113969886A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201116616Y (en) * | 2007-11-27 | 2008-09-17 | 浙江盾安阀门有限公司 | Ball sealer used in ball vale |
| CN201133485Y (en) * | 2007-12-28 | 2008-10-15 | 山东力诺瑞特新能源有限公司 | Valve body sealed element |
| CN201963531U (en) * | 2011-03-03 | 2011-09-07 | 中国石油天然气股份有限公司 | Slice mining anti-gas pump for pumping wells |
| CN202708222U (en) * | 2012-08-24 | 2013-01-30 | 十堰恒融实业有限公司 | Check valve of fuel tank |
| CN203322401U (en) * | 2012-10-31 | 2013-12-04 | 四川安东油气工程技术服务有限公司 | One-way pressure valve |
| CN203394715U (en) * | 2013-06-28 | 2014-01-15 | 中国石油天然气股份有限公司 | Anti-air-locking oil well pump |
| CN103603791A (en) * | 2013-12-10 | 2014-02-26 | 四川澳维采油设备有限公司 | Hollow oil well pump |
| CN204942635U (en) * | 2015-09-02 | 2016-01-06 | 浙江鼎耐塑胶管阀有限公司 | A kind of Vertical Lift Check Valves |
| CN105318049A (en) * | 2014-07-30 | 2016-02-10 | 上海连成（集团）有限公司 | Self-exhaust type check valve of vertical automatic control self-priming pump |
| CN205446828U (en) * | 2015-12-21 | 2016-08-10 | 杭州萧山涌潮水泵有限公司 | One -way valve |
| CN206319863U (en) * | 2016-12-26 | 2017-07-11 | 胜利油田金岛实业有限责任公司 | High-efficiency anti-corrosion wearing inclined shaft pump |
| CN208184945U (en) * | 2018-05-10 | 2018-12-04 | 山东寿光市坤隆石油机械股份有限公司 | Efficient air-trapping oil-well pump is oriented in hollow type |
| CN209026262U (en) * | 2018-09-11 | 2019-06-25 | 广州市一森生物科技有限公司 | A kind of no spring Medical check valve |
| CN209800802U (en) * | 2019-02-14 | 2019-12-17 | 浙江三花制冷集团有限公司 | one-way valve |
-
2020
- 2020-07-22 CN CN202010711272.8A patent/CN113969886A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201116616Y (en) * | 2007-11-27 | 2008-09-17 | 浙江盾安阀门有限公司 | Ball sealer used in ball vale |
| CN201133485Y (en) * | 2007-12-28 | 2008-10-15 | 山东力诺瑞特新能源有限公司 | Valve body sealed element |
| CN201963531U (en) * | 2011-03-03 | 2011-09-07 | 中国石油天然气股份有限公司 | Slice mining anti-gas pump for pumping wells |
| CN202708222U (en) * | 2012-08-24 | 2013-01-30 | 十堰恒融实业有限公司 | Check valve of fuel tank |
| CN203322401U (en) * | 2012-10-31 | 2013-12-04 | 四川安东油气工程技术服务有限公司 | One-way pressure valve |
| CN203394715U (en) * | 2013-06-28 | 2014-01-15 | 中国石油天然气股份有限公司 | Anti-air-locking oil well pump |
| CN103603791A (en) * | 2013-12-10 | 2014-02-26 | 四川澳维采油设备有限公司 | Hollow oil well pump |
| CN105318049A (en) * | 2014-07-30 | 2016-02-10 | 上海连成（集团）有限公司 | Self-exhaust type check valve of vertical automatic control self-priming pump |
| CN204942635U (en) * | 2015-09-02 | 2016-01-06 | 浙江鼎耐塑胶管阀有限公司 | A kind of Vertical Lift Check Valves |
| CN205446828U (en) * | 2015-12-21 | 2016-08-10 | 杭州萧山涌潮水泵有限公司 | One -way valve |
| CN206319863U (en) * | 2016-12-26 | 2017-07-11 | 胜利油田金岛实业有限责任公司 | High-efficiency anti-corrosion wearing inclined shaft pump |
| CN208184945U (en) * | 2018-05-10 | 2018-12-04 | 山东寿光市坤隆石油机械股份有限公司 | Efficient air-trapping oil-well pump is oriented in hollow type |
| CN209026262U (en) * | 2018-09-11 | 2019-06-25 | 广州市一森生物科技有限公司 | A kind of no spring Medical check valve |
| CN209800802U (en) * | 2019-02-14 | 2019-12-17 | 浙江三花制冷集团有限公司 | one-way valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11434702B2 (en) | Plug and valve integrated cone valve pump with combined type movable and fixed three cylinders and two spiral centralizers | |
| CN210715038U (en) | Anti-gas pumping-assisting thick oil pump | |
| CN113969886A (en) | Tubular oil well pump | |
| CN206988079U (en) | A kind of fluid pressure type oil well pump | |
| CN103498785B (en) | Fireflood oil well pump | |
| CN111188758A (en) | Anti-gas lock oil-gas mixed pump and pipe column | |
| CN212898894U (en) | Tube pump standing valve | |
| CN202203092U (en) | Solid plunger type oil-well pump | |
| CN211314172U (en) | Hollow pumping aid | |
| CN212838316U (en) | Gas-proof device for oil-well pump | |
| CN113969891A (en) | Tube pump standing valve | |
| CN210919407U (en) | Circulation gas-proof oil-well pump | |
| RU183876U1 (en) | Bidirectional linear submersible pump unit | |
| CN111577209A (en) | Pressurization device for mechanical pumping drainage gas production well mouth and pressurization method thereof | |
| US5058667A (en) | Reciprocating water well pump | |
| RU53737U1 (en) | DEPTH BAR PIPE PUMP WITH REMOVABLE SUCTION VALVE | |
| CN212656806U (en) | Oil pipe strong drainage casing strong gas production system | |
| US2528833A (en) | Well pump | |
| CN204532798U (en) | A kind of oil-well pump oil inlet valve | |
| CN215595851U (en) | Slide valve type air-lock-proof oil pump | |
| CN110608158A (en) | Anti-gas pumping-assisting thick oil pump | |
| CN109488552A (en) | A kind of Manual hydraulic pump of high reliability | |
| CN2398442Y (en) | Negative-pressure pulse deep well oil production pump device | |
| CN103161433B (en) | Oil-well pump energy-storage enhancing device capable of compressing natural gas automatically | |
| CN219061959U (en) | Double-plunger test combined pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |