CN213775625U - Boosting water injection pump for oil field - Google Patents
Boosting water injection pump for oil field Download PDFInfo
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- CN213775625U CN213775625U CN202022361340.0U CN202022361340U CN213775625U CN 213775625 U CN213775625 U CN 213775625U CN 202022361340 U CN202022361340 U CN 202022361340U CN 213775625 U CN213775625 U CN 213775625U
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Abstract
The utility model discloses an oil field booster water injection pump, which comprises a pump body, the pump body is including drive assembly and connect in drive assembly's fluid end, the fluid end includes inlet valve and outlet valve, be provided with the multistage formula piston body between inlet valve and the outlet valve, inlet valve and outlet valve set up along multistage formula piston body axial lead direction symmetry. The plunger at the hydraulic end of the pump body is optimized into a multi-stage piston body, so that a high-pressure load alternating region between the inlet valve and the outlet valve is effectively avoided, the quality and the service life of the oil field booster water injection pump disclosed by the utility model are obviously improved, the maintenance is convenient, the structure is simple, and the water injection effect is improved; the diameter of the connecting stage is smaller than that of the sliding stage, the influence of the high-pressure load of the hydraulic end on the multi-stage piston body can be reduced to a lower range, the influence of the high-pressure load alternating area can be reduced to the lowest by the aid of the structure, and accordingly the service life of the hydraulic cylinder body is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the pump body technique of making and specifically relates to an oil field booster water injection pump is related to.
Background
At present, oil field flooding is one of the main oil extraction processes of oil fields in China, and is also an important measure for ensuring stable and high yield of the oil fields. The main equipment for injecting water into the oil well is a reciprocating high-pressure water injection pump, and the structure of the pump comprises two parts, wherein one part is a hydraulic end, the other part is a power end, the hydraulic end is used for conveying liquid, and the hydraulic end is used for converting mechanical energy into pressure energy of the liquid and is a working part of the reciprocating high-pressure water injection pump. At present, the hydraulic end of a reciprocating high-pressure water injection pump used in an oil field adopts an integral hydraulic cylinder body, and the hydraulic cylinder body with the structure is arranged in a high-pressure load alternating region of a liquid inlet valve and a liquid outlet valve of the hydraulic end, so that the hydraulic cylinder body continuously bears the action of a high-pressure load.
For example, the "oil field large flow reciprocating water injection pump" disclosed in the chinese patent document, which is disclosed in the publication No. CN102808751A, includes a power end and a hydraulic end, wherein the power end drives a plunger of the hydraulic end to make a linear reciprocating motion through a crank-link mechanism, the hydraulic end is provided with a discharge pipe assembly and a suction pipe assembly, and the number of hydraulic cylinders of the hydraulic end is 5-cylinder or 7-cylinder structure; and the hydraulic end suction valve and the discharge valve are vertically arranged; the suction valve and the discharge valve both adopt combined spherical valves; meanwhile, the power end adopts an eccentric wheel structure; a support is added in the middle of the eccentric wheel, and a cylindrical roller bearing is arranged between the eccentric wheel and the big end of the connecting rod; and a cylindrical roller bearing is arranged between the crosshead and the crosshead pin. The centrifugal pump water injection equipment with low efficiency is replaced by a mode of combining a plurality of groups of liquid cylinder bodies, but the problem that the liquid cylinder bodies continuously bear high-pressure load to cause service life reduction still exists. Therefore, the utility model provides an oil field booster water injection pump.
SUMMERY OF THE UTILITY MODEL
The problem that the fluid cylinder body to mention among the background art continuously bears high pressure load and leads to life-span decline, the utility model provides an oil field booster water injection pump is optimized to the multi-stage formula piston body through the plunger with pump body fluid end, effectively avoids the high pressure load alternating district between inlet valve and the outlet valve, makes the utility model discloses an oil field booster water injection pump quality and life obviously promote, and convenient maintenance, simple structure promotes the water injection effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an oil field booster water injection pump, includes the pump body, the pump body is including drive assembly and the fluid end of connecting in drive assembly, the fluid end includes inlet valve and outlet valve, be provided with the multistage piston body between inlet valve and the outlet valve, inlet valve and outlet valve set up along multistage piston body axial lead direction symmetry. The driving assembly comprises a driving motor and a power end, and the power end comprises a crankshaft, a connecting rod, a crosshead and the like. The inlet and outlet valves continue to fill under the operation of the drive assembly. The plunger at the hydraulic end of the pump body is optimized into the multi-stage piston body, a high-pressure load alternating area between the inlet valve and the outlet valve is effectively avoided, and the multi-stage piston body structure can further reduce the variable load influence on the liquid cylinder body during working.
Preferably, the multistage piston body includes a base and a plug connected to the base in an inserting manner, the plug includes a connection stage connected to the base, a sliding stage is arranged on one side of the connection stage away from the base, a transmission stage is arranged on one side of the sliding stage away from the connection stage, the transmission stage is connected to the driving assembly in an inserting manner, and the diameter of the sliding stage is larger than that of the connection stage. The multi-stage piston body is of an integrated structure and comprises a connecting stage connected to the base and a transmission stage connected with the driving assembly in an inserting mode, the diameter of the connecting stage is smaller than that of a sliding stage, the structure can guarantee that the influence of high-pressure load of a hydraulic end on the multi-stage piston body cannot be transmitted to a large load due to the fact that the connecting stage is small, the load on the connecting stage is further weakened after being transmitted to the sliding stage with the large diameter, and the structure can guarantee that the influence of a high-pressure load alternating area is reduced to the minimum, so that the service life of the hydraulic cylinder body is prolonged.
Preferably, the inlet valve is a flat valve, and a front gland is arranged on one side of the flat valve, which is far away from the plunger. When the water injection pump mainly works under the working condition of conveying oily sewage, the liquid viscosity ratio is lower, the weight of the valve plate can be reduced by adopting the flat valve (the valve plate is made of non-metallic materials), the valve load is reduced, and the suction performance of the pump is improved. The front gland makes the disassembly and assembly of the multi-stage piston body, the packing and the one-way valve very easy, and is convenient for the maintenance and repair of the pump.
Preferably, the outlet valve is a cone valve. The conical valve has the characteristics of smooth flow channel, large flow coefficient, small hydraulic resistance, strong flow capacity and good sealing performance.
Preferably, the surface of the multi-stage piston body is provided with a wear-resistant layer. The multistage piston body base material adopts 2Cr13, and the multistage piston body surface adopts the thermal spraying technology, so the life of multistage piston body itself not only can be improved, can also reduce the wearing and tearing to sealing filler, improve the life of filler by a wide margin.
Preferably, the outer edge of the multi-stage piston body is provided with a sealing filler, and the sealing filler is of a braided structure. The filler is made of aramid fiber and carbon fiber yarns in a mixed mode, the service life and the self-lubricating rubber are made of the aramid fiber or the carbon fiber singly, and the service life and the self-lubricating rubber are obviously prolonged.
Preferably, a positioning spacer ring is arranged between the sealing packing. In order to ensure that the sealing filler is not deformed in the long-time operation process of the pump (the filler loses efficacy in the use process and is the phenomenon that the material of the filler is lost after the filler is denatured at first), the utility model discloses a sealing filler of the pump adopts that a positioning spacer ring is additionally arranged behind a plurality of sealing fillers for fixing, thereby greatly prolonging the service life of the sealing filler and improving the sealing property of the sealing filler.
Therefore, the utility model discloses following beneficial effect has: (1) the plunger at the hydraulic end of the pump body is optimized into a multi-stage piston body, so that a high-pressure load alternating region between the inlet valve and the outlet valve is effectively avoided, the quality and the service life of the oil field booster water injection pump disclosed by the utility model are obviously improved, the maintenance is convenient, the structure is simple, and the water injection effect is improved; (2) the diameter of the connecting stage is smaller than that of the sliding stage, so that the influence of a high-pressure load of the hydraulic end on the multi-stage piston body can be reduced to a lower range, the load on the connecting stage is further weakened after being transmitted to the sliding stage with the larger diameter, and the structure can ensure that the influence of a high-pressure load alternating region is reduced to the lowest, so that the service life of the hydraulic cylinder body is prolonged; (3) the filler is made of aramid fiber and carbon fiber yarns in a mixed mode, the service life and the self-lubricating rubber are made of the aramid fiber or the carbon fiber singly, and the service life and the self-lubricating rubber are obviously prolonged.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a schematic view of the multi-stage piston body of fig. 1.
In the figure: 1. the pump body, 2, drive assembly, 21, driving motor, 3, fluid end, 4, inlet valve, 5, outlet valve, 6, multistage piston body, 61, base, 62, connection stage, 63, slip stage, 64, transmission stage, 7, preceding gland, 8, wearing layer, 9, sealing packing, 10, location spacer ring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Example 1
As shown in fig. 1 and 2, the booster water injection pump for the oil field comprises a pump body, wherein the pump body comprises a driving assembly and a fluid end connected to the driving assembly, the fluid end comprises an inlet valve and an outlet valve, a multi-stage piston body is arranged between the inlet valve and the outlet valve, and the inlet valve and the outlet valve are symmetrically arranged along the axial center line direction of the multi-stage piston body. The driving assembly comprises a driving motor and a power end, and the power end comprises a crankshaft, a connecting rod, a crosshead and the like. The inlet and outlet valves continue to fill under the operation of the drive assembly. The plunger at the hydraulic end of the pump body is optimized into the multi-stage piston body, a high-pressure load alternating area between the inlet valve and the outlet valve is effectively avoided, and the multi-stage piston body structure can further reduce the variable load influence on the liquid cylinder body during working.
The multistage formula piston body includes the base and inserts the stopper post that closes to connect in the base, the stopper post is including connecting in the connection level of base, one side that the base was kept away from to the connection level is provided with the slip level, one side that the connection level was kept away from to the slip level is provided with the transmission level, the transmission level is inserted and is closed and connect in drive assembly, slip level diameter is greater than the connection level diameter. The multi-stage piston body is of an integrated structure and comprises a connecting stage connected to the base and a transmission stage connected with the driving assembly in an inserting mode, the diameter of the connecting stage is smaller than that of a sliding stage, the structure can guarantee that the influence of high-pressure load of a hydraulic end on the multi-stage piston body cannot be transmitted to a large load due to the fact that the connecting stage is small, the load on the connecting stage is further weakened after being transmitted to the sliding stage with the large diameter, and the structure can guarantee that the influence of a high-pressure load alternating area is reduced to the minimum, so that the service life of the hydraulic cylinder body is prolonged.
The inlet valve is a flat valve, and a front gland is arranged on one side, away from the plunger, of the flat valve. The outlet valve is a cone valve. When the water injection pump mainly works under the working condition of conveying oily sewage, the liquid viscosity ratio is lower, the weight of the valve plate can be reduced by adopting the flat valve (the valve plate is made of non-metallic materials), the valve load is reduced, and the suction performance of the pump is improved. The front gland makes the disassembly and assembly of the multi-stage piston body, the packing and the one-way valve very easy, and is convenient for the maintenance and repair of the pump. The conical valve has the characteristics of smooth flow channel, large flow coefficient, small hydraulic resistance, strong flow capacity and good sealing performance. And the surface of the multi-stage piston body is provided with a wear-resistant layer. The multi-stage piston body is made of 2Cr13 as a base material, the outer surface of the multi-stage piston body is subjected to a thermal spraying process, the thickness of a spraying layer reaches 0.7mm, the surface hardness of the multi-stage piston body reaches HRC 62-68, and the surface finish degree of the multi-stage piston body reaches 0.2 mu m, so that the service life of the multi-stage piston body can be prolonged, the abrasion to sealing filler can be reduced, and the service life of the filler can be greatly prolonged.
The outer edge of the multi-stage piston body is provided with a sealing filler which is of a braided structure. And a positioning spacer ring is arranged between the sealing fillers. The filler is made of aramid fiber and carbon fiber yarns in a mixed mode, the service life and the self-lubricating rubber are made of the aramid fiber or the carbon fiber singly, and the service life and the self-lubricating rubber are obviously prolonged. In order to ensure that the sealing filler is not deformed in the long-time operation process of the pump (the filler loses efficacy in the use process and is shown in the phenomenon that the material of the filler is lost after the filler is denatured), the utility model discloses a sealing filler of the pump adopts the mode that a positioning spacer ring made of filling polytetrafluoroethylene material (tin bronze is adopted in the high-pressure working condition) is additionally arranged behind a plurality of sealing fillers for fixing, so that the service life of the sealing filler can be greatly prolonged, and the sealing performance of the sealing filler is improved.
In addition to the above embodiments, the technical features of the present invention can be re-selected and combined within the scope of the present invention as disclosed in the claims and the specification to constitute new embodiments, which can be realized by those skilled in the art without any creative work, therefore, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and within the protection scope of the present invention.
Claims (7)
1. The booster water injection pump for the oil field comprises a pump body and is characterized in that the pump body comprises a driving assembly and a hydraulic end connected to the driving assembly, the hydraulic end comprises an inlet valve and an outlet valve, a multi-stage piston body is arranged between the inlet valve and the outlet valve, and the inlet valve and the outlet valve are symmetrically arranged along the axial lead direction of the multi-stage piston body.
2. The oilfield booster water injection pump of claim 1, wherein the multi-stage piston body comprises a base and a plug inserted into the base, the plug comprises a connection stage connected to the base, a sliding stage is arranged on a side of the connection stage away from the base, a transmission stage is arranged on a side of the sliding stage away from the connection stage, the transmission stage is inserted into the driving assembly, and the diameter of the sliding stage is larger than that of the connection stage.
3. The oilfield booster water injection pump of claim 1, wherein the inlet valve is a flat plate valve, and a front gland is arranged on a side of the flat plate valve away from the multi-stage piston body.
4. The oilfield booster water injection pump of claim 1, wherein the outlet valve is a cone-type valve.
5. The oilfield booster water injection pump of claim 1, wherein the multi-stage piston body surface is provided with a wear resistant layer.
6. The oilfield booster water injection pump according to any one of claims 1 to 5, wherein the outer edge of the multi-stage piston body is provided with a sealing filler, and the sealing filler is of a woven structure.
7. The oilfield booster water injection pump of claim 6, wherein a positioning spacer ring is arranged between the sealing filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022361340.0U CN213775625U (en) | 2020-10-21 | 2020-10-21 | Boosting water injection pump for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022361340.0U CN213775625U (en) | 2020-10-21 | 2020-10-21 | Boosting water injection pump for oil field |
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| Publication Number | Publication Date |
|---|---|
| CN213775625U true CN213775625U (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022361340.0U Active CN213775625U (en) | 2020-10-21 | 2020-10-21 | Boosting water injection pump for oil field |
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| Country | Link |
|---|---|
| CN (1) | CN213775625U (en) |
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2020
- 2020-10-21 CN CN202022361340.0U patent/CN213775625U/en active Active
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