CN117404292A - Plunger synchronous lubricating device of plunger pump - Google Patents
Plunger synchronous lubricating device of plunger pump Download PDFInfo
- Publication number
- CN117404292A CN117404292A CN202210797773.1A CN202210797773A CN117404292A CN 117404292 A CN117404292 A CN 117404292A CN 202210797773 A CN202210797773 A CN 202210797773A CN 117404292 A CN117404292 A CN 117404292A
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- Prior art keywords
- plunger
- lubricating oil
- annular
- working cavity
- hydraulic
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 22
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 21
- 239000010687 lubricating oil Substances 0.000 claims abstract description 73
- 238000007789 sealing Methods 0.000 claims abstract description 49
- 239000003921 oil Substances 0.000 claims abstract description 36
- 238000005461 lubrication Methods 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims description 24
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 7
- 230000010349 pulsation Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 4
- 230000033001 locomotion Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 6
- 239000000945 filler Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- 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
- F04B53/18—Lubricating
-
- 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
- F04B53/02—Packing the free space between cylinders and pistons
-
- 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
A synchronous lubricating device for plunger pump and plunger. The hydraulic end hydraulic cylinder of the balance lubrication system is fixedly connected with the annular pressurizing cylinder of the pressurizing system in a coaxial way, and the hydraulic end plunger reciprocates along the hydraulic end hydraulic cylinder and the annular pressurizing cylinder; the lubricating oil working cavity of the balance lubrication system is communicated with the annular working cavity of the pressurizing system through a connecting pipe; the reciprocating motion of the plunger of the hydraulic end provides power for the lubricating oil, and the lubricating oil adjusts the lubricating pressure value under the control of a control unit of an oil control system. The device has the beneficial effects that the structure design is reasonable, the lubrication condition of the plunger at the hydraulic end of the plunger pump is improved, the pressure pulsation at two sides of the sealing ring is basically consistent, and the service life of the sealing ring is effectively prolonged; the lubricating oil is pressurized and conveyed in the closed pipeline, so that the lubricating oil is prevented from being polluted by external foreign matters, and the lubricating oil is ensured to flow back to the lubricating oil tank; the service life of the hydraulic end plunger assembly is prolonged, the maintenance times are reduced, and the working efficiency of the plunger pump is improved.
Description
Technical Field
The invention relates to a plunger pump, in particular to a plunger synchronous lubricating device of a plunger pump, and belongs to the technical field of oil gas development.
Background
In oil gas development, the high-displacement high-pressure plunger pump is mainly applied to pressurizing injection operation, and has the advantages of large injection quantity, high pressure and long working period. When the plunger reciprocates at high pressure and high frequency, related parts are easy to wear and generate heat, forced lubrication is needed to reduce the wear of the related parts, and generated heat is discharged from the lubrication cavity through lubricating oil to be taken away.
The hydraulic end plunger forced lubrication device of the existing plunger pump generally adopts a hydraulic pump to boost the pressure of lubricating oil, and a pressure limiting valve is used for limiting the feeding pressure of the lubricating oil. The lubricating cavity and the hydraulic end are sealed by packing, the lubricating cavity and the connecting rod end are sealed by soft filler, and lubricating oil is discharged from the narrow gap of the soft filler at the connecting rod end, flows into the oil collecting tank and returns to the lubricating oil tank. The fluid end sealing ring pressure comes from fluid pumped by the fluid end, and the fluid pressure pumped by the fluid end changes in a pulsation mode along with the reciprocating motion of the plunger due to the characteristics of the plunger pump. When the packing seal works in the plunger pump, the single face bears high-frequency pulsation pressure, the working state of the packing seal is bad, failure is easy to occur, and the maintenance workload is increased. The soft packing seal is tightly attached to the plunger surface by virtue of the axial compression force generated by the gland, so that the compression force is overlarge, the blocking force of the plunger is large, and the soft packing has the advantages of quick temperature rise and short service life; the pressing force is too small, the sealing effect is poor, and the leakage flow is large. Particulate matter is produced after the soft filler wears out and is mixed into the lubricating oil to pollute the lubricating oil. The oil collecting tank is covered by the cover plate to prevent foreign matters from entering the oil collecting tank, but gaps exist between the lubricating oil pumping pipeline and the cover plate, the oil collecting tank cannot be completely sealed, and the lubricating oil needs to be replaced frequently due to invasion of moisture, ash and other mediums of air in the use process; when the air temperature is too low, the viscosity of the lubricating oil is high, and the lubricating oil in the oil collecting tank cannot flow back to the lubricating oil tank in time, so that the lubricating system is caused to be failed.
Disclosure of Invention
In order to overcome the defects of forced lubrication of a hydraulic end plunger of the existing plunger pump, the invention provides a plunger synchronous lubrication device of the plunger pump.
The technical scheme adopted for solving the technical problems is as follows: the synchronous lubricating device comprises a hydraulic end hydraulic cylinder and a hydraulic end plunger, wherein the synchronous lubricating device comprises a balanced lubricating system, a pressurizing system and an oil control system, the hydraulic end hydraulic cylinder of the balanced lubricating system is coaxially and fixedly connected with an annular pressurizing cylinder of the pressurizing system, and the hydraulic end plunger reciprocates along the hydraulic end hydraulic cylinder and the annular pressurizing cylinder.
The lubricating oil working cavity of the balance lubrication system is communicated with the annular working cavity of the pressurizing system through a connecting pipe.
The hydraulic end plunger reciprocates to provide power for lubricating oil, and the lubricating oil adjusts the lubricating pressure value under the control of a control unit of an oil control system.
The hydraulic end plunger reciprocates along the hydraulic end hydraulic cylinder and the annular pressurizing cylinder to change the volume of the annular working cavity and provide power for lubricating oil.
The inner hole of the hydraulic end hydraulic cylinder is sequentially provided with a sealing component I and a sealing component II along the axial direction of the hydraulic end plunger, and the sealing component I and the sealing component II are installed in opposite directions.
The hydraulic end hydraulic cylinder between the sealing component I and the sealing component II is provided with 2 radial through holes I, wherein 1 radial hole I is communicated with the liquid outlet pipe, and the other 1 radial hole I is communicated with the connecting pipe.
The radial clearance between the hydraulic end plunger and the hydraulic end hydraulic cylinder and the radial hole I form a lubricating oil working cavity.
The Gelai circle I, the guide ring I and the dustproof gasket I of the sealing assembly I are sequentially installed from the inner side of the lubricating oil working cavity to the outer side.
And the sealing assembly II is sequentially arranged from the inner side of the lubricating oil working cavity to the outer side of the lubricating oil working cavity.
One end of the annular pressure cylinder is fixedly connected with the hydraulic end hydraulic cylinder, an annular working cavity is formed in the end portion of the other end of the annular pressure cylinder, 2 radial holes II of the annular pressure cylinder are communicated with the annular working cavity, 1 radial hole II is communicated with the connecting pipe, and the other 1 radial hole II is communicated with the liquid inlet pipe.
An annular pressurizing plunger fixedly connected with the hydraulic end plunger is arranged in the annular working cavity, and an outer ring sealing assembly and an inner ring sealing assembly arranged in the annular working cavity radially seal the annular working cavity and the annular pressurizing plunger.
The Gelai ring III and the guide ring III of the outer ring sealing assembly are sequentially arranged along the annular working cavity from inside to outside; the Gelai ring IV and the guide ring IV of the inner ring sealing assembly are sequentially arranged along the annular working cavity from inside to outside.
The outer end of the annular pressurizing plunger is fixedly connected with 2 semicircular clamping blocks, and the 2 semicircular clamping blocks forming a circular shape are fixedly connected with the hydraulic end plunger.
The pressure sensor of the oil control system for measuring the pressure of the hydraulic end working cavity is connected with the control unit; more than 2 pressure stage units of the oil control system are connected in parallel, the electric control reversing valve of each pressure stage unit is respectively connected with the control unit, and the control unit selects the pressure stage units with different pressure values.
When the hydraulic end plunger reciprocates to provide power for lubricating oil, the lubricating oil of the oil control system sequentially passes through the liquid inlet pipe, the annular working cavity, the connecting pipe, the lubricating oil working cavity, the liquid outlet pipe and the pressure level unit and returns to the oil tank.
The pressure stage unit comprises a pressure limiting valve and an electric control reversing valve which are connected in series; and a pressure relief pipeline for installing a pressure relief valve is arranged between the liquid outlet pipe and the oil tank.
The invention has the beneficial effects that the structure design is reasonable, the lubrication condition of the plunger of the hydraulic end of the plunger pump is improved, the pressure pulsation at two sides of the sealing ring is basically consistent, and the service life of the sealing ring is effectively prolonged; the lubricating oil is pressurized and conveyed in the closed pipeline, so that the lubricating oil is prevented from being polluted by external foreign matters, and the lubricating oil is ensured to flow back to the lubricating oil tank; the service life of the hydraulic end plunger assembly is prolonged, the maintenance times are reduced, and the working efficiency of the plunger pump is improved.
Drawings
Fig. 1 is a schematic structural view of a plunger synchronous lubrication device of a plunger pump of the present invention.
Fig. 2 is a schematic diagram of the balanced lubrication system and the pressurization system of the present invention.
In the figure: 1. hydraulic end cylinders, 2, dust seal, 6, pilot ring, 7, dust seal, 8, annular boost cylinder, 9, glaring, 10, pilot ring, 11, 12, semi-circular cartridge, 13, hydraulic end, 14, inner ring seal assembly, 15, annular boost plunger, 17, pilot ring, 18, glaring, 19, annular working chamber, 20, inlet check valve, 21, filter, 22, oil tank, 23, pressure limiting valve, 24, pressure limiting valve, 25, control unit, 26, electronically controlled reversing valve, 27, electronically controlled reversing valve, 28, outlet check valve, 29, relief valve, 30, pressure sensor, 31, lubricating oil working chamber, 32, hydraulic end working chamber, 33, connecting pipe, 34, radial through hole, 35, pressure stage unit, 36, seal assembly, 37, seal assembly, 38, radial through hole, 39, oil pipe, 40, oil inlet system, 300, balance system.
Detailed Description
The invention is further described below 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 listed and should be included within the scope of the present invention as long as the spirit of the present invention is satisfied.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "left", "right", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description or simplification of the description of the present invention, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," "sealed" are to be construed broadly, and for example, the connection may be a fixed connection, a removable connection, or an integral connection; the two components can be mechanically connected, can be directly connected, can be indirectly connected through an intermediate medium, and can be communicated with each other inside the two components. The seal may be an oil seal, a packing seal or other seal. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
See fig. 1 and 2. The invention relates to a plunger synchronous lubricating device of a plunger pump, which comprises a balance lubricating system 100, a pressurizing system 200 and an oil control system 300, wherein a hydraulic end hydraulic cylinder 1 of the balance lubricating system 100 is fixedly connected with an annular pressurizing cylinder 8 of the pressurizing system 200 in a coaxial way, and a hydraulic end plunger 13 reciprocates along the hydraulic end hydraulic cylinder 1 and the annular pressurizing cylinder 8.
The lubricating oil working chamber 31 of the balance lubrication system 100 communicates with the annular working chamber 19 of the supercharging system 200 via a connecting pipe 33.
The reciprocating motion of the fluid end ram 13 provides power to the lubrication oil, which adjusts the lubrication pressure value under the control of the control unit 25 of the oil control system 300.
The hydraulic end plunger 13 reciprocates along the hydraulic end hydraulic cylinder 1 and the annular pressurizing cylinder 8 to change the volume of the annular working cavity 19 and provide power for lubricating oil.
The balance lubrication system 100 comprises a hydraulic end hydraulic cylinder 1, a lubricating oil working cavity 31, a sealing component I36 and a sealing component II 37, wherein the sealing component I36 and the sealing component II 37 are sequentially arranged in the inner hole of the hydraulic end hydraulic cylinder 1 along the axial direction of the hydraulic end plunger 13, and the sealing component I36 and the sealing component II 37 are installed in opposite directions.
Further, the sealing assembly I36 comprises a Gelai ring I4, a guide ring I3 and a dustproof gasket I2, and the Gelai ring I4, the guide ring I3 and the dustproof gasket I2 are sequentially installed from the inner side of the lubricating oil working cavity 31 to the outer side; preferably, the guide ring I3 and the dustproof gasket I2 are made of polytetrafluoroethylene.
Further, the sealing assembly II 37 comprises a Stirling seal 5, a guide ring II 6 and a dustproof gasket II 7, wherein the Stirling seal 5, the guide ring II 6 and the dustproof gasket II 7 are sequentially installed from the inner side of the lubricating oil working cavity 31 to the outer side; preferably, the guide ring II 6 and the dustproof gasket II 7 are made of polytetrafluoroethylene.
The cylinder body of the hydraulic end hydraulic cylinder 1 between the sealing assembly I36 and the sealing assembly II 37 is provided with 2 radial through holes I34, wherein 1 radial hole I34 is communicated with a liquid outlet pipe 39, and the other 1 radial hole I34 is communicated with a connecting pipe 33.
The radial clearance between the hydraulic end plunger 13 and the hydraulic end hydraulic cylinder 1 and the radial hole I34 form a lubricating oil working cavity 31.
The pressurizing system 200 comprises an annular pressurizing cylinder 8, an annular pressurizing plunger 16, an outer ring sealing assembly 15 and an inner ring sealing assembly 16, one end of the annular pressurizing cylinder 8 is fixedly connected with the hydraulic end hydraulic cylinder 1 of the balanced lubrication system 100, the end of the other end is provided with an annular working cavity 19, and the annular working cavity 19 is an annular deep groove; the 2 radial bores II 38 of the annular pressure cylinder 8 are connected to the annular working chamber 19, of which 1 radial bore II 38 is connected to the connecting pipe 33 and the other 1 radial bore II 38 is connected to the inlet pipe 40.
The piston part at one end of the annular pressurizing plunger 16 is positioned in the annular working cavity 19, and the other end of the annular pressurizing plunger is fixedly connected with the hydraulic end plunger 13; the outer ring seal assembly 15 and the inner ring seal assembly 14 of the annular working chamber 19 radially seal the annular working chamber 19 from the annular pressurizing plunger 16.
Further, the gray ring iii 9 and the guide ring iii 10 of the outer ring seal assembly 15 are sequentially arranged along the annular working cavity 19 from inside to outside; the Gelai circle IV 18 and the guide ring IV 17 of the inner ring sealing assembly 14 are sequentially arranged along the annular working cavity 19 from inside to outside.
The outer end of the annular pressurizing plunger 16 is fixedly connected with 2 semicircular clamping blocks 12, and the 2 semicircular clamping blocks 12 forming a round shape are fixedly connected with the annular pressurizing plunger 16 through bolts 11; the 2 semicircular clamping blocks 12 are fixedly connected with the hydraulic end plunger 13. When the hydraulic end plunger 13 reciprocates, the annular pressurizing plunger 16 is driven to reciprocate synchronously, the annular pressurizing plunger 16 reciprocates to change the volume pulsation of the annular working cavity 19, power is provided for lubricating oil, the pressure pulsation on two sides of a plunger sealing ring of the balanced lubricating system 100 is basically consistent, and the service life of the sealing ring is effectively prolonged.
The oil control system 300 comprises a control unit 25, an oil tank 22, more than 2 pressure level units 35 and a pressure sensor 30 for measuring the pressure of a hydraulic end working cavity 32; each pressure stage unit 35 consists of a pressure limiting valve and an electric control reversing valve which are connected in series; more than 2 pressure stage units 35 are connected in parallel, and each pressure stage unit 35 is preset with a fixed pressure value; the pressure sensor 30 and the electronically controlled reversing valve of each pressure stage unit 35 are each connected to the control unit 25. During operation, the control unit 25 selects the pressure stage units 35 of different pressure values according to the process requirements. A pressure relief pipeline for installing a pressure relief valve 29 is arranged between the liquid outlet pipe 39 and the oil tank 22.
In fig. 1, 2 of the plurality of pressure stage units 35 are schematically represented, namely a pressure limiting valve i 23 and an electrically controlled reversing valve i 27, and a pressure limiting valve ii 24 and an electrically controlled reversing valve ii 26. The electric control reversing valve I27 and the electric control reversing valve II 26 are preset with different pressure values in advance, and the control unit 25 is used for selecting the lubrication pressure according to the design requirement of the injection process of the plunger pump.
When the hydraulic end plunger 13 reciprocates to provide power for the lubricating oil, the lubricating oil is filtered by the filter 21 from the oil tank 22, and then sequentially passes through the liquid inlet check valve 20, the liquid inlet pipe 40, the annular working cavity 19, the connecting pipe 33, the lubricating oil working cavity 31, the liquid outlet pipe 39, the liquid outlet check valve 28 and the pressure stage unit 35 to return to the oil tank 22, so that the lubricating oil circularly reciprocates to complete the sealed lubrication of the hydraulic end plunger 13.
Further, when the annular pressurizing plunger 16 reciprocates together with the hydraulic end plunger 13 and the volume of the annular working cavity 19 increases, the lubricating oil in the lubricating oil tank 22 is sucked into the filter 21 and enters the annular working cavity 19 through the liquid inlet one-way valve 20 and the liquid inlet pipe 40, and the liquid inlet one-way valve 20 ensures that the lubricating oil flows unidirectionally into the annular working cavity 19; when the volume of the annular working chamber 19 is compressed, the liquid inlet check valve 20 ensures that lubricating oil cannot flow back to the oil tank 22, the lubricating oil is pressed into the lubricating oil working chamber 31 through the connecting pipe 33, and redundant oil flows into the pressure stage unit 35 after passing through the liquid outlet pipe 39 and the liquid outlet check valve 28, and the liquid outlet check valve 28 ensures that the lubricating oil cannot flow back to the lubricating oil working chamber 31. When the pressure in the pipeline exceeds the set maximum safe pressure value, the pressure relief valve 29 on the pressure relief pipeline is opened, so that the working safety of the synchronous lubrication device is ensured. The pressure sensor 30 monitors the pressure in the hydraulic end working cavity 32 and feeds back the pressure to the control unit 25 in real time, the control unit 25 controls the electric control reversing valve II 26 and the electric control reversing valve I27, and the lubrication pressure is adjusted according to the pressure level unit 35 with the corresponding pressure value communicated with the pressure value in the hydraulic end working cavity 32.
The plunger synchronous lubricating device of the plunger pump provided by the invention is characterized in that the plunger 13 at the hydraulic end is used for providing power for lubricating oil, the working cavity of the lubricating oil is consistent with the pulsation at the two sides of the sealing ring at the hydraulic end, the pressure of the lubricating oil is regulated under the control of the control unit, the pressure difference at the two sides of the sealing ring between the working cavity of the lubricating oil and the hydraulic end is reduced, the stress condition of the sealing ring is improved, and the service life of the sealing ring is prolonged.
The lubricating oil is conveyed in the closed pipeline and is effectively isolated from the external environment, so that the pollution to the lubricating oil is reduced, and the service life of the lubricating oil is effectively prolonged; the lubricating oil is delivered back to the hydraulic oil tank in a closed pressurizing way, so that the stable operation of the lubricating system is ensured.
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 (10)
1. The utility model provides a synchronous lubricating arrangement of plunger pump plunger, includes fluid end hydraulic cylinder, fluid end plunger, characterized by:
the synchronous lubrication device comprises a balanced lubrication system, a pressurizing system and an oil liquid control system, wherein a hydraulic end hydraulic cylinder of the balanced lubrication system is fixedly connected with an annular pressurizing cylinder of the pressurizing system in a coaxial way, and a hydraulic end plunger reciprocates along the hydraulic end hydraulic cylinder and the annular pressurizing cylinder;
the lubricating oil working cavity of the balance lubrication system is communicated with the annular working cavity of the pressurizing system through a connecting pipe;
the hydraulic end plunger reciprocates to provide power for lubricating oil, and the lubricating oil adjusts the lubricating pressure value under the control of a control unit of an oil control system.
2. The plunger pump plunger synchronous lubrication device according to claim 1, wherein: the hydraulic end plunger reciprocates along the hydraulic end hydraulic cylinder and the annular pressurizing cylinder to change the volume of the annular working cavity and provide power for lubricating oil.
3. The plunger pump plunger synchronous lubrication device according to claim 2, wherein: the inner hole of the hydraulic end hydraulic cylinder is sequentially provided with a sealing component I and a sealing component II along the axial direction of the hydraulic end plunger, and the sealing component I and the sealing component II are installed in opposite directions;
the hydraulic end hydraulic cylinder between the sealing component I and the sealing component II is provided with 2 radial through holes I, wherein 1 radial hole I is communicated with the liquid outlet pipe, and the other 1 radial hole I is communicated with the connecting pipe;
the radial clearance between the hydraulic end plunger and the hydraulic end hydraulic cylinder and the radial hole I form a lubricating oil working cavity.
4. A plunger pump plunger synchronous lubrication device according to claim 3, characterized in that:
the Griley ring I, the guide ring I and the dustproof gasket I of the sealing assembly I are sequentially arranged from the inner side of the lubricating oil working cavity to the outer side;
and the sealing assembly II is sequentially arranged from the inner side of the lubricating oil working cavity to the outer side of the lubricating oil working cavity.
5. The plunger pump plunger synchronous lubrication device according to claim 1, wherein: one end of the annular pressure cylinder is fixedly connected with the hydraulic end hydraulic cylinder, an annular working cavity is formed in the end of the other end of the annular pressure cylinder, 2 radial holes II of the annular pressure cylinder are communicated with the annular working cavity, 1 radial hole II is communicated with the connecting pipe, and the other 1 radial hole II is communicated with the liquid inlet pipe;
an annular pressurizing plunger fixedly connected with the hydraulic end plunger is arranged in the annular working cavity, and an outer ring sealing assembly and an inner ring sealing assembly arranged in the annular working cavity radially seal the annular working cavity and the annular pressurizing plunger.
6. The plunger pump plunger synchronous lubrication device according to claim 5, wherein: the Gelai ring III and the guide ring III of the outer ring sealing assembly are sequentially arranged along the annular working cavity from inside to outside; the Gelai ring IV and the guide ring IV of the inner ring sealing assembly are sequentially arranged along the annular working cavity from inside to outside.
7. The plunger pump plunger synchronous lubrication device according to claim 6, wherein: the outer end of the annular pressurizing plunger is fixedly connected with 2 semicircular clamping blocks, and the 2 semicircular clamping blocks forming a circular shape are fixedly connected with the hydraulic end plunger.
8. The plunger pump plunger synchronous lubrication device according to claim 1, wherein: the pressure sensor of the oil control system for measuring the pressure of the hydraulic end working cavity is connected with the control unit; more than 2 pressure stage units of the oil control system are connected in parallel, the electric control reversing valve of each pressure stage unit is respectively connected with the control unit, and the control unit selects the pressure stage units with different pressure values.
9. The plunger pump plunger synchronous lubrication device according to claim 8, wherein: when the hydraulic end plunger reciprocates to provide power for lubricating oil, the lubricating oil of the oil control system sequentially passes through the liquid inlet pipe, the annular working cavity, the connecting pipe, the lubricating oil working cavity, the liquid outlet pipe and the pressure level unit and returns to the oil tank.
10. The plunger pump plunger synchronous lubrication device according to claim 9, wherein: the pressure stage unit comprises a pressure limiting valve and an electric control reversing valve which are connected in series; and a pressure relief pipeline for installing a pressure relief valve is arranged between the liquid outlet pipe and the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210797773.1A CN117404292A (en) | 2022-07-06 | 2022-07-06 | Plunger synchronous lubricating device of plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210797773.1A CN117404292A (en) | 2022-07-06 | 2022-07-06 | Plunger synchronous lubricating device of plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117404292A true CN117404292A (en) | 2024-01-16 |
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ID=89485813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210797773.1A Pending CN117404292A (en) | 2022-07-06 | 2022-07-06 | Plunger synchronous lubricating device of plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117404292A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119554200A (en) * | 2025-02-05 | 2025-03-04 | 四川德源管道科技股份有限公司 | A double-acting plunger pump and control method |
-
2022
- 2022-07-06 CN CN202210797773.1A patent/CN117404292A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119554200A (en) * | 2025-02-05 | 2025-03-04 | 四川德源管道科技股份有限公司 | A double-acting plunger pump and control method |
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