CN210769263U - Pump cylinder inverted suspension up-down stroke liquid inlet and outlet oil well pump - Google Patents
Pump cylinder inverted suspension up-down stroke liquid inlet and outlet oil well pump Download PDFInfo
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- CN210769263U CN210769263U CN201921825222.1U CN201921825222U CN210769263U CN 210769263 U CN210769263 U CN 210769263U CN 201921825222 U CN201921825222 U CN 201921825222U CN 210769263 U CN210769263 U CN 210769263U
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Abstract
An up-down stroke liquid inlet and outlet oil pump with an inverted suspended pump cylinder. The utility model comprises an outer tube assembly, a pump barrel assembly and a plunger assembly, wherein the outer tube of the outer tube assembly, a bidirectional liquid inlet joint and a fixed valve I are sequentially and fixedly connected from top to bottom, and the bidirectional liquid inlet joint is provided with an axial liquid inlet channel and a radial liquid inlet channel; an upper pump cylinder, a lower pump cylinder and a fixed valve II of the pump cylinder assembly are sequentially arranged from top to bottom; the upper pump barrel is fixedly connected with the outer pipe assembly; the upper end and the lower end of the fixed valve II are respectively fixedly connected with a bidirectional liquid inlet joint of the lower pump barrel and the outer pipe assembly; an upper plunger, a mixed flow valve, a lower plunger and a traveling valve I of the plunger assembly are fixedly connected from top to bottom in sequence, and the mixed flow valve is provided with an axial flow channel and a radial flow channel. The bidirectional liquid inlet and discharge device has the advantages that the mixed flow valve is arranged between the upper plunger and the lower plunger, the bidirectional liquid inlet joint is arranged at the lower end of the pump barrel, a liquid flow channel of the upper stroke and the lower stroke of the oil well pump is separated, bidirectional liquid inlet and discharge are realized in the reciprocating pumping process of the oil well pump, and the working efficiency of the oil well pump is improved.
Description
Technical Field
The utility model relates to an oil-well pump of oil gas development especially relates to a pump barrel is invertd and is hung upper and lower stroke and advance flowing back oil-well pump, belongs to oil gas development technical field.
Background
When the oil field development enters the later stage, along with the promotion of exploitation technique, high yield well constantly increases, causes to produce higher demand to the displacement of oil-well pump, because to manufacturing cost control more and more important, reduction in production cost's demand constantly increases, at present, the oil-well pump that the oil field used is mostly whole section of thick bamboo oil-well pump, and the minority uses the screw pump, and special oil-well pump use amount is less, but along with the development of oil field exploitation technique, the well condition is more and more complicated, and the demand to special oil-well pump is bigger and bigger.
At present, most of applied pumps with large liquid discharge amount are whole-barrel oil-well pumps, the purpose of increasing the liquid discharge amount is achieved by increasing the inner diameter of a pump barrel, but the problem that the liquid discharge amount is increased only by increasing the pump diameter is that the processing difficulty is large after the diameters of the pump barrel and a plunger are increased, the size is not easy to control and the like; the oil pump discharges liquid in one direction, the pump efficiency is low, the energy consumption is large, and the oil production operation cost is high. Therefore, how to improve the liquid discharge capacity of the oil well pump, designing an oil well pump with reasonable structure, easy production and processing and high pump efficiency becomes a difficult problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In order to overcome that current oil-well pump exists increase the diameter increase that the displacement exists pump barrel and plunger through the increase pump footpath and process the degree of difficulty after big, the size is difficult to control to and the pump efficiency is low, the power consumption is big, oil recovery operation is with high costs not enough, the utility model provides a pump barrel is invertd and is hung up stroke advance flowing back oil-well pump.
The utility model provides a technical scheme that its technical problem adopted is: a pump cylinder inverted suspension up-down stroke liquid inlet and outlet oil well pump comprises an outer pipe assembly, a pump cylinder assembly and a plunger assembly, wherein the upper end and the lower end of the outer pipe assembly are fixedly connected with an oil pipe; a pump barrel of the pump barrel assembly is fixedly connected with the outer pipe assembly; the upper end of the plunger assembly is fixedly connected with the sucker rod and driven by the sucker rod to reciprocate up and down along the pump cylinder.
Outer tube, two-way liquid inlet joint, the standing valve I of outer tube assembly are from top to bottom fixed connection in proper order, two-way liquid inlet joint is provided with axial inlet channel and radial inlet channel.
The pump cylinder assembly comprises an upper pump cylinder, a lower pump cylinder and a fixed valve II, and the upper pump cylinder, the lower pump cylinder and the fixed valve II are sequentially arranged from top to bottom; the upper pump barrel is fixedly connected with the outer pipe assembly; and the upper end and the lower end of the fixed valve II are respectively and fixedly connected with the bidirectional liquid inlet joint of the lower pump barrel and the outer pipe assembly.
The plunger assembly comprises an upper plunger, a lower plunger, a mixed flow valve and a traveling valve I, wherein the upper plunger, the mixed flow valve, the lower plunger and the traveling valve I are fixedly connected from top to bottom in sequence; the mixed flow valve is provided with an axial flow channel and a radial flow channel.
And a radial liquid inlet channel of a bidirectional liquid inlet joint of the outer pipe assembly, a fixed valve II of the pump barrel assembly, a traveling valve I of the plunger assembly, an axial liquid flow channel of the mixed flow valve and an inner hole of the upper plunger form a liquid outlet channel I from bottom to top.
And a liquid outlet channel II from bottom to top is formed by the fixed valve I at the lower end of the outer pipe assembly, the axial liquid inlet channel of the bidirectional liquid inlet joint, the radial liquid flow channel of the mixed flow valve and the inner hole of the upper plunger.
And a pump cylinder cavity is formed between the traveling valve I and the fixed valve II in the lower pump cylinder.
In the outer tube, an outer tube cavity is formed between the fixed valve I and the bidirectional liquid inlet connector, between the outer tube and the lower pump barrel in the radial direction, and between the lower pump barrel and the upper plunger in the radial direction to the mixed flow valve.
When the plunger assembly moves downwards, the volume of the pump cylinder cavity is reduced, the pressure is increased, the fixed valve II is closed, the traveling valve I is opened, and well liquid in the pump cylinder cavity flows upwards along the liquid outlet channel I through the opened traveling valve I; meanwhile, the mixed flow valve is closed, and the fixed valve I is opened by liquid in the shaft and enters the outer pipe cavity through the fixed valve I.
When the plunger assembly moves upwards, the volume of the pump cylinder cavity is increased, the pressure is reduced, the traveling valve I is closed, and well fluid in a shaft opens the fixed valve II through a radial fluid inlet channel of the bidirectional fluid inlet joint and enters the pump cylinder cavity; meanwhile, the pressure in the upper pump barrel is reduced, and the mixed flow valve is opened by well liquid in the outer pipe cavity and flows upwards along the liquid outlet channel II.
The upper pump cylinder and the lower pump cylinder of the pump cylinder assembly are both mounted in a mode that one end of the upper pump cylinder and one end of the lower pump cylinder are suspended and the other end of the lower pump cylinder is fixed.
Furthermore, the lower end of the upper pump barrel is fixedly connected with a variable lock joint hoop of the outer pipe assembly; the lower end of the lower pump barrel is fixedly connected with the bidirectional liquid inlet joint of the outer pipe assembly through a fixed valve II.
Further, the length and the diameter of the lower pump cylinder are larger than those of the upper pump cylinder; the length of an upper plunger matched with the upper pump barrel is greater than that of the upper pump barrel; the length of the lower plunger matched with the lower pump barrel is smaller than that of the lower pump barrel.
Furthermore, the bidirectional liquid inlet joint is in a thick-wall cylindrical shape, the radial liquid inlet channel is communicated with the blind hole I in the center, and the axial liquid inlet channel is arranged on the cylindrical wall.
Further, the mixed flow valve comprises a valve body, a valve seat, a valve ball, an oil outlet valve cover, an outer cover and a variable-diameter joint, wherein the outer cover, the valve body and the variable-diameter joint are sequentially and fixedly connected from top to bottom. The valve body is in a thick-wall cylindrical shape, the radial liquid flow channel is communicated with a blind hole II in the center of the valve body, and the axial liquid flow channel is arranged on the cylindrical wall. The oil outlet valve cover is provided with an oil outlet hole, the oil outlet valve cover is fixedly connected with the valve body to fix the valve seat, and the valve ball is positioned in the oil outlet valve cover.
And an oil pipe coupling, a short joint, a variable buckle coupling, an outer pipe, a bidirectional liquid inlet joint and a fixed valve I of the outer pipe assembly are sequentially and fixedly connected from top to bottom.
Furthermore, the lower end of the upper pump cylinder of the pump cylinder assembly is fixedly connected with the buckling hoop of the outer pipe assembly; the lower pump barrel is fixedly connected with the fixed valve II; the lower end of the fixed valve II is fixedly connected with a bidirectional liquid inlet joint of the outer pipe assembly through a pump barrel joint.
Furthermore, the upper end of the upper plunger of the plunger assembly is connected with the sucker rod through an oil outlet joint, and the oil outlet joint is provided with an oil outlet hole.
And furthermore, a traveling valve II is arranged between the upper plunger of the plunger assembly and the oil outlet joint.
The utility model has the advantages of reasonable structural design and easy processing and manufacturing; the mixed flow valve is arranged between the upper plunger and the lower plunger, the two-way liquid inlet joint is arranged at the lower end of the pump barrel, and liquid flow channels of an upper stroke and a lower stroke of the oil well pump are separated and do not interfere with each other, so that the oil well pump can realize two-way liquid inlet and liquid discharge in the reciprocating pumping process, the working efficiency of the oil well pump is effectively improved, the energy consumption is reduced, and the production operation cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the pump barrel of the present invention, which is inversely suspended and has up-down stroke for liquid feeding and discharging.
Fig. 2 is a schematic view of the structure of the two-way liquid inlet joint of the present invention.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is a schematic structural diagram of the mixed flow valve of the present invention.
In the figure: 1. a pump cylinder cavity, 2, an outer pipe cavity,
11. an axial liquid inlet channel, 12 radial liquid inlet channels, 13 a blind hole I,
31. axial flow channel, 32 radial flow channel, 33 valve body, 34 valve seat, 35 valve ball, 36 oil outlet valve cover, 37 outer cover, 38 reducing joint, 39 blind hole II,
100. an outer pipe assembly, 101, an outer pipe, 102, a two-way liquid inlet joint, 103, fixed valves I, 104, a tubing coupling, 105, a short circuit, 106, a variable buckle coupling,
200. a pump cylinder assembly, 201, an upper pump cylinder, 202, a lower pump cylinder, 203, a fixed valve II, 204, a pump cylinder joint,
300. plunger assembly, 301, upper plunger, 302, mixed flow valve, 303, lower plunger, 304, traveling valve I, 305, traveling valve II.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. However, it should be understood by those skilled in the art that the present invention is not limited to the specific embodiments shown, and the present invention should be included within the scope of the present invention as long as the spirit of the present invention is met.
See figures 1-4. The utility model relates to a pump cylinder inversion suspension up-down stroke liquid inlet and outlet oil well pump, which comprises an outer pipe assembly 100, a pump cylinder assembly 200, a plunger assembly 300, a traveling valve, a fixed valve, an outer pipe assembly 100, a pump cylinder assembly 200 and a plunger assembly 300 which are arranged in turn from outside to inside in the radial direction; the upper end and the lower end of the outer pipe assembly 100 are fixedly connected with an oil pipe; the pump cylinder of the pump cylinder assembly 200 is fixedly connected with the outer pipe assembly 200; the upper end of the plunger assembly 300 is fixedly connected with the sucker rod, and the plunger assembly 300 reciprocates up and down along the pump cylinder assembly 200 under the driving of the sucker rod.
The pump barrel assembly 200 comprises an upper pump barrel 201, a lower pump barrel 202 and a fixed valve II 203, wherein the upper pump barrel 201, the lower pump barrel 202 and the fixed valve II 203 are sequentially arranged from top to bottom. The upper pump barrel 201 is fixedly connected with the outer pipe assembly 100; the upper end and the lower end of the fixed valve II 203 are respectively fixedly connected with the lower pump barrel 202 and the bidirectional liquid inlet joint 102 of the outer pipe assembly 100.
The plunger assembly 300 comprises an upper plunger 301, a lower plunger 303, a mixed flow valve 302 and a traveling valve I304, wherein the upper plunger 301, the mixed flow valve 302, the lower plunger 303 and the traveling valve I304 are fixedly connected from top to bottom in sequence; the mixed flow valve 302 is provided with an axial flow passage 31 and a radial flow passage 32.
After the outer tube assembly 100, the pump barrel assembly 200 and the plunger assembly 300 are installed, 2 liquid outlet channels are formed, namely: the liquid outlet channel I and the liquid outlet channel II are as follows:
the radial liquid inlet channel 12 of the bidirectional liquid inlet joint 102 of the outer pipe assembly 100, the fixed valve II 203 of the pump barrel assembly 200, the traveling valve I304 of the plunger assembly 300, the axial liquid flow channel 31 of the mixed flow valve 302 and the inner hole of the upper plunger 301 form a liquid outlet channel I from bottom to top.
The fixed valve I103 at the lower end of the outer pipe assembly 100, the axial liquid inlet channel 11 of the two-way liquid inlet joint 102, the radial liquid flow channel 32 of the mixed flow valve 302 and the inner hole of the upper plunger 301 form a liquid outlet channel II from bottom to top.
And simultaneously, the utility model discloses the pump cylinder is invertd and is hung up stroke feed and discharge liquid oil-well pump and still have 2 cavitys from top to bottom, promptly: pump barrel cavity 1 and outer tube cavity 2, specifically as follows:
in the lower pump cylinder 202, a pump cylinder cavity 1 is formed between the axial directions of the traveling valve I304 and the fixed valve II 203;
in the lower end part of the outer pipe 101, an outer pipe cavity 2 is formed between the fixed valve I103 and the two-way liquid inlet joint 102 in the axial direction, between the outer pipe 101 and the lower pump barrel 202 in the radial direction, and between the lower pump barrel 202 and the upper plunger 301 in the radial direction and the mixed flow valve 302.
Further, the upper pump cylinder 201 and the lower pump cylinder 202 of the pump cylinder assembly 200 both adopt an installation mode of one end hanging and one end fixed, when the upper pump cylinder 201 and the lower pump cylinder 202 both adopt an inverted hanging structure, the lower part of the pump cylinder is fixedly connected, the upper part of the pump cylinder is inverted and hung, the pump cylinder is not influenced by self and tail pipe gravity, deformation is not easy to occur, and fatigue damage is reduced; and the inverted suspended pump barrel can freely swing with small amplitude to adapt to the inclination of an oil well, so that the coaxiality of the pump barrel and an oil pumping pipe column is achieved, eccentric wear is reduced, the service life of the whole pump is prolonged, and power consumption is reduced. Specifically, the method comprises the following steps: the lower end of the upper pump cylinder 201 is fixedly connected with the buckling hoop 106 of the outer pipe assembly 100; the lower end of the lower pump barrel 202 is fixedly connected with the bidirectional liquid inlet joint 102 of the outer pipe assembly 100 through a fixed valve II 203.
Further, the length and the diameter of the lower pump cylinder 202 are larger than those of the upper pump cylinder 201.
The length of the upper plunger 301 matched with the upper pump barrel 201 is larger than that of the upper pump barrel 201 (namely, the length of the short pump barrel and the long plunger), and in the working process of the oil well pump, the upper plunger 301 is always matched with the inner hole of the upper pump barrel 201 to prevent gravel from entering the pump barrel, so that the damage of the oil well pump caused by sand blocking can be effectively reduced, and the service life of the oil well pump is prolonged.
The length of the lower plunger 303 matched with the lower pump cylinder 202 is smaller than that of the lower pump cylinder 202 (namely, a long pump cylinder and a short plunger), so that the volume of the pump cylinder cavity 1 can be effectively increased.
See figures 2 and 3. The bidirectional liquid inlet joint 102 is in a thick-wall cylindrical shape, a blind hole I13 is formed in the center of the bidirectional liquid inlet joint, and the radial liquid inlet channel 12 is communicated with the blind hole I13; the axial liquid inlet channel 11 is arranged on the cylinder wall, the axial liquid inlet channel 11 can be a cylindrical through hole or an arc-shaped through hole, and the number of the cylindrical through holes or the arc-shaped through holes is 2 or more than 2.
See fig. 4. The mixed flow valve 302 comprises a valve body 33, a valve seat 34, a valve ball 35, an oil outlet valve cover 36, an outer cover 37 and a reducer union 38, wherein the valve body 33 is in a thick-wall cylindrical shape, a blind hole II 39 is formed in the center of the valve body, and the radial liquid flow channel 32 is communicated with the blind hole II 39; the axial liquid flow channel 31 is arranged on the cylinder wall, and further, the axial liquid flow channel 31 is a cylindrical through hole, and the number is 2 or more than 2.
The outer cover 37, the valve body 33 and the reducer union 38 are fixedly connected in sequence from top to bottom; the oil outlet valve cover 36 is provided with an oil outlet hole, the oil outlet valve cover 36 is fixedly connected with the valve body 33 to fix the valve seat 34, and the valve ball 35 is positioned in the oil outlet valve cover 36.
The mixed flow valve 302 is used for dividing well fluid pumped by the upper and lower stroke oil pumping systems into two fluid outlet channels to advance and converge into the upper plunger, and then the well fluid is discharged through an oil outlet joint above the upper plunger and enters an oil pipe.
See figure 1. The tubing coupling 104, the short joint 105, the variable buckle coupling 106, the outer tube 101, the two-way liquid inlet joint 102 and the fixed valve I103 of the outer tube assembly 100 are fixedly connected in sequence from top to bottom.
The pump barrel assembly 200 comprises an upper pump barrel 201, a lower pump barrel 202 and a fixed valve II 203, wherein the upper pump barrel 201, the lower pump barrel 202 and the fixed valve II 203 are sequentially arranged from top to bottom. The lower end of an upper pump cylinder 201 of the pump cylinder assembly 200 is fixedly connected with the buckling hoop 106 of the outer pipe assembly 100, the upper end of the upper pump cylinder 201 is provided with a centralizing pressure cap, and a gap is reserved between the excircle of the centralizing pressure cap and the inner hole of the short joint 105 of the outer pipe assembly 100. The lower pump barrel 202 and the fixed valve II 203 are fixedly connected; the lower end of the fixed valve II 203 is fixedly connected with the inner thread of the two-way liquid inlet joint 102 of the outer pipe assembly 100 through a pump barrel joint 204.
The plunger assembly 300 comprises an upper plunger 301, a lower plunger 303, a mixed flow valve 302 and a traveling valve I304, wherein the upper plunger 301, the mixed flow valve 302, the lower plunger 303 and the traveling valve I304 are fixedly connected from top to bottom in sequence. The upper end of the upper plunger 301 is connected with the sucker rod through an oil outlet joint, and the oil outlet joint is provided with an oil outlet.
Further, a traveling valve ii 305 is fixedly mounted between the upper plunger 301 of the plunger assembly 300 and the oil outlet joint. And in the normal operation process of the oil well pump, the traveling valve II is in an open state, and well fluid is discharged out of the pump and enters the tubing string. When the oil well pump stops working, the traveling valve II 305 is automatically closed to prevent oil in the oil pipe column from being communicated with the interior of the pump, so that gravel can be effectively prevented from entering the interior of the plunger assembly to cause pump blockage, and the service life of the whole oil well pump can be prolonged.
The utility model discloses the pump barrel is invertd and is hung upper and lower stroke and advance flowing back oil-well pump working process as follows:
when the plunger assembly 300 moves downwards (namely downstroke), the volume of the pump cylinder cavity 1 is reduced, the pressure is increased, the fixed valve II 203 is closed, the traveling valve I304 is opened, and the well liquid in the pump cylinder cavity 1 flows upwards along the liquid outlet channel I through the opened traveling valve I304; at the same time, the mixed flow valve 302 is closed, and the liquid in the well bore opens the fixed valve I103 and enters the outer tube cavity 2 through the fixed valve I103. In the process of the down stroke, well liquid in the pump barrel cavity 1 flows upwards (discharges liquid) along the liquid outlet channel I, and the liquid in the shaft enters the outer pipe cavity 2 (absorbs liquid) through the fixed valve I103.
When the plunger assembly 300 moves upwards (namely, an upstroke), the volume of the pump cylinder cavity 1 is increased, the pressure is reduced, the traveling valve I304 is closed, and well fluid in a well bore opens the fixed valve II 203 through the radial fluid inlet channel 12 of the bidirectional fluid inlet joint 102 and enters the pump cylinder cavity 1; meanwhile, the pressure in the upper pump barrel 201 is reduced, and the mixed flow valve 302 is opened by the well fluid in the outer pipe cavity 2 and flows upwards along the fluid outlet channel II. In the process of the up stroke, the well fluid in the outer pipe cavity 2 flows upwards (discharges fluid) along the fluid outlet channel II, and the well fluid in the shaft enters the pump cylinder cavity 1 (absorbs fluid) through the fixed valve II 203.
When the pump barrel is inversely suspended, the plunger assembly 300 of the oil pump with the up-down stroke for feeding and discharging liquid can reciprocate up and down along the pump barrel under the driving of the sucker rod, so that liquid suction and liquid discharge can be simultaneously carried out no matter the pump barrel is in the up-stroke or the down-stroke, and the efficacy of the oil pump is effectively improved.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims.
Claims (9)
1. A pump cylinder inverted suspension up-down stroke liquid inlet and outlet oil well pump comprises an outer pipe assembly, a pump cylinder assembly and a plunger assembly, wherein the upper end and the lower end of the outer pipe assembly are fixedly connected with an oil pipe; a pump barrel of the pump barrel assembly is fixedly connected with the outer pipe assembly; plunger assembly's upper end and sucker rod fixed connection, reciprocating motion about the pump barrel under the drive of sucker rod, characterized by:
the outer pipe, the two-way liquid inlet joint and the fixed valve I of the outer pipe assembly are fixedly connected from top to bottom in sequence, and the two-way liquid inlet joint is provided with an axial liquid inlet channel and a radial liquid inlet channel;
the pump cylinder assembly comprises an upper pump cylinder, a lower pump cylinder and a fixed valve II, and the upper pump cylinder, the lower pump cylinder and the fixed valve II are sequentially arranged from top to bottom; the upper pump barrel is fixedly connected with the outer pipe assembly; the upper end and the lower end of the fixed valve II are respectively fixedly connected with a bidirectional liquid inlet joint of the lower pump barrel and the outer pipe assembly;
an upper plunger, a mixed flow valve, a lower plunger and a traveling valve I of the plunger assembly are fixedly connected from top to bottom in sequence; the mixed flow valve is provided with an axial flow channel and a radial flow channel.
2. The pump cylinder inverted suspension up-down stroke intake-discharge oil well pump as claimed in claim 1, which is characterized in that:
a radial liquid inlet channel of a bidirectional liquid inlet joint of the outer pipe assembly, a fixed valve II of the pump barrel assembly, a traveling valve I of the plunger assembly, an axial liquid flow channel of the mixed flow valve and an inner hole of the upper plunger form a liquid outlet channel I from bottom to top;
a liquid outlet channel II from bottom to top is formed by the fixed valve I at the lower end of the outer pipe assembly, the axial liquid inlet channel of the bidirectional liquid inlet joint, the radial liquid flow channel of the mixed flow valve and the inner hole of the upper plunger;
in the lower pump cylinder, a pump cylinder cavity is formed between the traveling valve I and the fixed valve II;
in the outer tube, an outer tube cavity is formed between the fixed valve I and the bidirectional liquid inlet connector, between the outer tube and the lower pump barrel in the radial direction, and between the lower pump barrel and the upper plunger in the radial direction to the mixed flow valve.
3. The pump cylinder inverted suspension up-down stroke intake-discharge oil well pump as claimed in claim 2, which is characterized in that: the upper pump cylinder and the lower pump cylinder of the pump cylinder assembly are both mounted in a mode that one end of the upper pump cylinder and one end of the lower pump cylinder are suspended and the other end of the lower pump cylinder is fixed.
4. The pump cylinder inverted suspension up-down stroke intake-discharge oil well pump as claimed in claim 3, which is characterized in that:
the lower end of the upper pump barrel is fixedly connected with a variable buckle connection hoop of the outer pipe assembly;
the lower end of the lower pump barrel is fixedly connected with the bidirectional liquid inlet joint of the outer pipe assembly through a fixed valve II.
5. The pump cylinder upside down suspension up-down stroke liquid inlet and outlet oil well pump as claimed in any one of claims 1-3, characterized in that:
the length and the diameter of the lower pump cylinder are larger than those of the upper pump cylinder;
the length of an upper plunger matched with the upper pump barrel is greater than that of the upper pump barrel;
the length of the lower plunger matched with the lower pump barrel is smaller than that of the lower pump barrel.
6. The pump cylinder inverted suspension up-down stroke intake-discharge oil well pump as claimed in claim 5, which is characterized in that: the bidirectional liquid inlet joint is in a thick-wall cylindrical shape, the radial liquid inlet channel is communicated with the blind hole I in the center, and the axial liquid inlet channel is arranged on the cylindrical wall.
7. The pump cylinder inverted suspension up-down stroke intake-discharge oil well pump as claimed in claim 6, which is characterized in that:
the mixed flow valve comprises a valve body, a valve seat, a valve ball, an oil outlet valve cover, an outer cover and a reducing joint, wherein the outer cover, the valve body and the reducing joint are fixedly connected from top to bottom in sequence;
the valve body is in a thick-wall cylindrical shape, the radial liquid flow channel is communicated with a blind hole II in the center of the valve body, and the axial liquid flow channel is arranged on the cylindrical wall;
the oil outlet valve cover is provided with an oil outlet hole, the oil outlet valve cover is fixedly connected with the valve body to fix the valve seat, and the valve ball is positioned in the oil outlet valve cover.
8. The pump cylinder inverted suspension up-down stroke intake-discharge oil well pump as claimed in claim 7, which is characterized in that:
an oil pipe coupling, a short joint, a variable buckle coupling, an outer pipe, a bidirectional liquid inlet joint and a fixed valve I of the outer pipe assembly are fixedly connected in sequence from top to bottom;
the lower end of the upper pump cylinder of the pump cylinder assembly is fixedly connected with the buckling hoop of the outer pipe assembly; the lower pump barrel is fixedly connected with the fixed valve II; the lower end of the fixed valve II is fixedly connected with a bidirectional liquid inlet joint of the outer pipe assembly through a pump barrel joint;
the upper end of the upper plunger of the plunger assembly is connected with the sucker rod through an oil outlet joint, and the oil outlet joint is provided with an oil outlet.
9. The pump cylinder inverted suspension up-down stroke intake-discharge oil well pump as claimed in claim 8, which is characterized in that: and a traveling valve II is arranged between the upper plunger of the plunger assembly and the oil outlet joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921825222.1U CN210769263U (en) | 2019-10-28 | 2019-10-28 | Pump cylinder inverted suspension up-down stroke liquid inlet and outlet oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921825222.1U CN210769263U (en) | 2019-10-28 | 2019-10-28 | Pump cylinder inverted suspension up-down stroke liquid inlet and outlet oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210769263U true CN210769263U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921825222.1U Active CN210769263U (en) | 2019-10-28 | 2019-10-28 | Pump cylinder inverted suspension up-down stroke liquid inlet and outlet oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210769263U (en) |
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2019
- 2019-10-28 CN CN201921825222.1U patent/CN210769263U/en active Active
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Effective date of registration: 20201119 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Petroleum Equipment Manufacturing Co.,Ltd. Patentee after: BOHAI PETROLEUM EQUIPMENT (TIANJIN) NEW CENTURY MACHINERY MANUFACTURING Co.,Ltd. Address before: 300280 Tianjin Binhai New Area Tianjin Dagang Oilfield North pass through the middle of the road. Patentee before: CNPC Bohai Petroleum Equipment Manufacturing Co.,Ltd. Patentee before: BOHAI PETROLEUM EQUIPMENT (TIANJIN) NEW CENTURY MACHINERY MANUFACTURING Co.,Ltd. |