CN112160904A - High-power electrically-driven fracturing sledge power end lubricating system - Google Patents
High-power electrically-driven fracturing sledge power end lubricating system Download PDFInfo
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- CN112160904A CN112160904A CN202010908970.7A CN202010908970A CN112160904A CN 112160904 A CN112160904 A CN 112160904A CN 202010908970 A CN202010908970 A CN 202010908970A CN 112160904 A CN112160904 A CN 112160904A
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- oil
- valve
- fracturing
- oil tank
- power
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- 230000001050 lubricating effect Effects 0.000 title claims abstract description 36
- 238000005461 lubrication Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 87
- 239000010687 lubricating oil Substances 0.000 abstract description 23
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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- 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
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- 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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/02—Arrangements for conditioning of lubricants in the lubricating system by cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/04—Arrangements for conditioning of lubricants in the lubricating system by heating
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a power end lubricating system of a high-power electrically-driven fracturing sledge, which mainly comprises an oil tank, an overflow valve, a suction assembly, an electromagnetic valve, a filter, a one-way valve, a temperature control valve, a safety valve, a radiator, a fracturing pump and the like. Lubricating oil can be connected in parallel in multiple ways to synchronously complete the whole working process, the problems that the traditional single-pump structure is unreasonable in design and the system elements are difficult to select and assemble under the high-power working condition are solved, and the heating effect under the low-temperature working condition is improved by using overflow heating. The power end lubricating system can effectively control the pressure, the discharge capacity and the temperature of lubricating oil under various working conditions, and greatly improves the reliability and the lubricating effect of the power end lubricating system.
Description
Technical Field
The invention belongs to the technical field of oilfield fracturing operation equipment, and particularly relates to a power end lubricating system of a high-power electrically-driven fracturing sledge.
Background
The large electrically-driven fracturing equipment can effectively solve the environmental problems of high operation cost, high fire risk, site noise, emission pollution and the like of the conventional diesel power fracturing equipment, and has the advantages of small volume, high power, high reliability, stepless speed regulation, convenience in automation and the like. The requirements of high-strength operation can be met, the guarantee capability of fracturing equipment is improved, and the quality improvement, the speed improvement, the efficiency improvement and the cost reduction of the fracturing operation are realized.
The fracturing pump is a core acting component of the electrically driven fracturing sledge, and during working, mechanical energy input by the transmission shaft is converted into hydraulic energy with large displacement and high pressure of fracturing fluid to be injected into a well bottom, so that fracturing transformation is carried out on an oil-gas reservoir. When the fracturing pump works, a large amount of heat is generated due to the fact that the number of internal mechanical transmission mechanisms is large and friction during transmission, the temperature of lubricating oil rises rapidly, if heat dissipation is not performed in time to ensure that the temperature of the lubricating oil is in a proper working range, the fracturing pump cannot normally run due to the fact that the transmission is damaged. At present, a power end lubricating system of an electrically-driven fracturing sledge fracturing pump mostly adopts a single oil pump to absorb oil from a single oil tank because the displacement and the heat dissipation capacity of lubricating oil are not large, and the lubricating oil enters the fracturing pump through an auxiliary oil pipeline and a joint after being cooled by a radiator to lubricate each transmission mechanism.
Along with the continuous increase of the power of the fracturing sledge, the lubricating oil displacement and the heat dissipation required by the power end of the fracturing pump are also rapidly increased, and the weight and the volume of the fracturing sledge are also continuously increased due to the adoption of a single oil way lubricating system for storing oil by a single oil tank and absorbing oil by a single pump, so that the overall size and the overall layout of the fracturing sledge are greatly influenced, and the disassembly, assembly, maintenance and safe transportation of the whole machine are not facilitated; the larger oil displacement needs to be matched with a hydraulic element with a larger specification, which brings great trouble to the part type selection of the system and also causes difficult pipeline connection. Therefore, achieving rapid circulating cooling of large volumes of lubricating oil in a confined space is extremely important to the overall design of power end lubrication systems.
Disclosure of Invention
The invention aims to provide a power end lubricating system which is large in displacement, convenient to assemble and disassemble and good in lubricating effect according to the development requirement of a high-power electrically-driven fracturing sledge.
The technical scheme adopted by the invention is that the power end lubricating system of the high-power electrically-driven fracturing sledge comprises a lubricating system I and a lubricating system II, wherein the lubricating system I comprises a suction assembly I, an oil inlet of the suction assembly I is connected with an oil tank I through a pipeline, an oil outlet of the suction assembly I is sequentially connected with an electromagnetic valve I, a filter I, a one-way valve I and a temperature control valve I through pipeline connections, a first outlet of the temperature control valve I is connected with a fracturing pump through a radiator I, a second outlet of the temperature control valve I is connected with the fracturing pump, the lubricating system II comprises a suction assembly II, an oil inlet of the suction assembly II is connected with an oil tank II through a pipeline, an oil outlet of the suction assembly II is sequentially connected with the electromagnetic valve II through pipeline connections, the filter II, the one-way valve II and the temperature control valve II are arranged, a first outlet of the temperature control valve II is connected with the fracturing pump through a radiator, and a second outlet of the temperature control valve II is connected with the fracturing pump.
The present invention is also characterized in that,
an oil inlet of the fracturing pump is connected with an oil tank I through a safety valve I; an oil inlet of the fracturing pump is also connected with an oil tank II through a safety valve II; and an oil return pipeline of the fracturing pump is connected into an oil tank II and an oil tank I in a shunting manner.
An overflow valve I is arranged between an oil outlet of the suction assembly I and an oil return port of the oil tank I.
And an overflow valve II is arranged between the oil outlet of the suction assembly II and the oil return port of the oil tank II.
And the oil tank II is connected with the oil tank I through an oil pipe.
And a pressure gauge III is also arranged at an oil inlet of the fracturing pump.
The invention has the advantages that the overall structure is optimized, the space is reasonably distributed, and the transportation, the disassembly and the assembly are convenient through a multi-path parallel system; the pressure of each part in the system can be effectively controlled, the heating effect under the low-temperature condition is improved by overflow heating, only one-way work can be started when the fracturing pump operates at a low speed, the lubricating oil is guaranteed to have stable pressure, discharge capacity and temperature under various working conditions, and the lubricating effect and the service life of the whole power end lubricating system are greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of a power end lubrication system of a high-power electrically-driven fracturing sledge in the invention.
In the figure, 1, an oil tank I, 2, an overflow valve I, 3, a suction assembly I, 4, a pressure gauge I, 5, an electromagnetic valve I, 6, a filter I, 7, a check valve I, 8, a temperature control valve I, 9, a safety valve I, 10, a radiator, 11, an oil tank II, 12, an overflow valve II, 13, a suction assembly II, 14, a pressure gauge II, 15, an electromagnetic valve II, 16, a filter II, 17, a check valve II, 18, a temperature control valve II, 19, a safety valve II, 20, a fracturing pump and 21, a pressure gauge III.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses a power end lubricating system of a high-power electrically-driven fracturing sledge, which comprises a lubricating system I and a lubricating system II, wherein the two systems run synchronously or independently as shown in figure 1;
the lubricating system I comprises a suction assembly I3, an oil inlet of the suction assembly I3 is connected with an oil tank I1 through a pipeline, an oil outlet of the suction assembly I3 is sequentially connected with an electromagnetic valve I5, a filter I6, a one-way valve I7 and a temperature control valve I8 through pipeline connection, a first outlet of the temperature control valve I8 is connected with a fracturing pump 20 through a radiator I10, a second outlet of the temperature control valve I8 is connected with the fracturing pump 20, and an oil inlet of the fracturing pump 20 is connected with the oil tank I1 through a safety valve I9;
an overflow valve I2 is arranged between an oil outlet of the suction assembly I3 and an oil return port of the oil tank I1 to form a heating loop;
the lubricating system II comprises a suction assembly II 13, an oil inlet of the suction assembly II 13 is connected with an oil tank II 11 through a pipeline, an oil outlet of the suction assembly II 13 is sequentially connected with an electromagnetic valve II 15, a filter II 16, a one-way valve II 17 and a temperature control valve II 18 through pipeline connections, a first outlet of the temperature control valve II 18 is connected with a fracturing pump 20 through a radiator 10, a second outlet of the temperature control valve II 18 is connected with the fracturing pump 20, and an oil inlet of the fracturing pump 20 is connected with the oil tank II 11 through a safety valve II 19;
an overflow valve II 12 is arranged between the oil outlet of the suction assembly II 13 and the oil return port of the oil tank II 11 to form a heating loop;
a pressure gauge III 21 is also arranged at the oil inlet of the fracturing pump 20;
the oil tank II 11 is connected with the oil tank I1 through an oil pipe; the oil pipe is a hard pipe oil pipe, so that the lubricating oil keeps uniformly distributed while large discharge capacity is ensured.
An oil return pipeline of the fracturing pump 20 is connected into the oil tank II 11 and the oil tank I1 in a shunting manner;
the suction assembly I3 and the suction assembly II 13 respectively comprise a motor and a gear pump, the output shaft of the motor is connected with the gear pump, the motor and the gear pump are respectively installed on the oil tank cover plate, the starting motor drives the gear pump to suck lubricating oil, and the oil outlet of the gear pump of the suction assembly I3 and the gear pump of the suction assembly II 13 are respectively provided with a pressure gauge I4 and a pressure gauge II 14 for detecting the pressure of an oil way.
The radiator 10 is a combined radiator with two oil inlets, two oil outlets and two fans, and two paths of lubricating oil converge at the inlets and separately flow to the fracturing pump 20 after air cooling.
The invention relates to a power end lubricating system of a high-power electrically-driven fracturing sledge, which specifically adopts the working principle that:
under normal working conditions, lubricating oil flows out of the suction assembly I3 and the suction assembly II 13 and reaches the filter I6 and the filter II 16 through the electromagnetic valve I5 and the electromagnetic valve II 15 which are in normally open states, and the filtered lubricating oil respectively reaches inlets of the temperature control valve I8 and the temperature control valve II 18 through the one-way valve I7 and the one-way valve II 17; the temperature control valve I8 and the temperature control valve II 18 automatically select flow channels according to the temperature of the lubricating oil, and when the temperature is lower, the lubricating oil can directly flow to the fracturing pump 20; when the temperature is higher, lubricating oil can flow to fracturing pump 20 after radiator I10, radiator 10 cooling, install relief valve I9, relief valve II 19 at fracturing pump 20's oil inlet, and link to each other with oil tank I1, oil tank II 11 respectively, guarantee that lubricating oil gets into fracturing pump 20's pressure stability, manometer III 21 dress detects the entry oil pressure at fracturing pump 20's oil inlet simultaneously, and lubricating oil is got back to oil tank I1, oil tank II 11 from fracturing pump 20's oil-out at last and is accomplished whole return circuit.
Under the low-temperature working condition, the temperature of the lubricating oil cannot meet the requirement of starting a pump, the electromagnetic valve I5 and the electromagnetic valve II 15 are closed firstly, the overflow valve I2 and the overflow valve II 12 between the oil outlet of the suction assembly I3 and the suction assembly II 13 and the oil return port of the oil tank I1 and the oil return port of the oil tank II 11 are opened and adjusted, a circulating heating loop is formed by utilizing overflow heating and combining a heater in the oil tank, and the mode is switched to the normal working condition mode when the lubricating oil meets the requirement.
The one-way valve I7 and the one-way valve II 17 are respectively arranged between the filter I6 and the filter II 16 and between the temperature control valve I8 and the temperature control valve II 18, so that filter elements can be protected; meanwhile, when the single-path lubricating system runs, the lubricating oil is prevented from flowing back into the other path of system.
Normally open solenoid valves I5 and solenoid valves II 15 are arranged between the suction assembly I3, the suction assembly II 13, the filter I6 and the filter II 16, overflow valves I2 and II 12 are arranged between the oil outlets of the suction assembly I3 and the suction assembly II 13 and oil return ports of the oil tank I1 and the oil tank II 11, safety valves I9 and II 19 are arranged between the oil inlet of the fracturing pump 20 and the oil tank I1 and the oil tank II 11, and adjustment is carried out according to the lubricating requirements of the fracturing pump and pipeline pressure loss.
Under the low temperature condition, closing the electromagnetic valve I5 and the electromagnetic valve II 15, adjusting the pressure of the overflow valve I2 and the pressure of the overflow valve II 12, establishing an overflow heating loop, and performing combined circulating heating on the lubricating oil with the electric heaters in the oil tank I1 and the oil tank II 11.
Under the low-speed operation condition of the fracturing pump 20, the lubricating effect can be achieved only by opening any one of the lubricating system I and the lubricating system II.
Claims (6)
1. The utility model provides a high-power electricity drives fracturing sledge power end lubricating system, a serial communication port, including lubricating system I and lubricating system II, lubricating system I is including inhaling assembly I (3), the oil inlet that inhales assembly I (3) passes through pipe connection oil tank I (1), the oil-out that inhales assembly I (3) connects gradually solenoid valve I (5), filter I (6), check valve I (7), temperature-sensing valve I (8) through pipe connection, the first export of temperature-sensing valve I (8) passes through radiator I (10) and connects fracturing pump (20), the second exit linkage fracturing pump (20) of temperature-sensing valve I (8), lubricating system II, including inhaling assembly II (13), the oil inlet that inhales assembly II (13) passes through pipe connection oil tank II (11), the oil-out that inhales assembly II (13) connects gradually solenoid valve II (15) through pipe connection, Filter II (16), check valve II (17), temperature-sensing valve II (18), fracturing pump (20) are connected through radiator (10) to the first export of temperature-sensing valve II (18), fracturing pump (20) are connected to the second exit linkage of temperature-sensing valve II (18).
2. The power end lubrication system of the high-power electrically-driven fracturing sledge according to claim 1, wherein an oil inlet of the fracturing pump (20) is connected with an oil tank I (1) through a safety valve I (9); an oil inlet of the fracturing pump (20) is also connected with an oil tank II (11) through a safety valve II (19); and an oil return pipeline of the fracturing pump (20) is connected into the oil tank II (11) and the oil tank I (1) in a shunting manner.
3. The power end lubricating system of the high-power electrically-driven fracturing sledge according to claim 1, wherein an overflow valve I (2) is arranged between an oil outlet of the suction assembly I (3) and an oil return port of the oil tank I (1).
4. The power end lubricating system of the high-power electrically-driven fracturing sledge according to claim 1, wherein an overflow valve II (12) is arranged between an oil outlet of the suction assembly II (13) and an oil return port of the oil tank II (11).
5. The power end lubrication system of the high-power electrically-driven fracturing sledge according to claim 1, wherein the oil tank II (11) and the oil tank I (1) are connected through an oil pipe.
6. The power end lubrication system of the high-power electrically-driven fracturing sledge according to claim 1, characterized in that a pressure gauge III (21) is further arranged at the oil inlet of the fracturing pump (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010908970.7A CN112160904A (en) | 2020-09-02 | 2020-09-02 | High-power electrically-driven fracturing sledge power end lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010908970.7A CN112160904A (en) | 2020-09-02 | 2020-09-02 | High-power electrically-driven fracturing sledge power end lubricating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112160904A true CN112160904A (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010908970.7A Pending CN112160904A (en) | 2020-09-02 | 2020-09-02 | High-power electrically-driven fracturing sledge power end lubricating system |
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| CN (1) | CN112160904A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833316A (en) * | 2021-02-25 | 2021-05-25 | 三一石油智能装备有限公司 | Electrically-driven fracturing pry lubricating system, fracturing pry and lubricating control method |
| CN113531374A (en) * | 2021-08-17 | 2021-10-22 | 三一石油智能装备有限公司 | Fracturing equipment and control method thereof |
| CN114110394A (en) * | 2021-11-17 | 2022-03-01 | 武汉船用机械有限责任公司 | Nacelle propeller bearing lubricating system |
| CN114718537A (en) * | 2021-01-05 | 2022-07-08 | 中国石油天然气集团有限公司 | Fracturing device |
| US11668289B2 (en) | 2021-05-12 | 2023-06-06 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus |
| WO2023168823A1 (en) * | 2022-03-10 | 2023-09-14 | 烟台杰瑞石油装备技术有限公司 | Lubrication system |
| US11920585B1 (en) * | 2022-09-01 | 2024-03-05 | EKU Power Drives Inc. | Dual loop lubrication and thermal management system for pumps |
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| DE10000765A1 (en) * | 2000-01-11 | 2001-07-26 | Sauer Sundstrand Gmbh & Co | Lubricating system for control pump and fixed displacement motor in dry case system uses oil used to flush hydraulic system as lubricant |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718537A (en) * | 2021-01-05 | 2022-07-08 | 中国石油天然气集团有限公司 | Fracturing device |
| CN112833316A (en) * | 2021-02-25 | 2021-05-25 | 三一石油智能装备有限公司 | Electrically-driven fracturing pry lubricating system, fracturing pry and lubricating control method |
| US11668289B2 (en) | 2021-05-12 | 2023-06-06 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus |
| US12006925B2 (en) | 2021-05-12 | 2024-06-11 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus |
| CN113531374A (en) * | 2021-08-17 | 2021-10-22 | 三一石油智能装备有限公司 | Fracturing equipment and control method thereof |
| CN114110394A (en) * | 2021-11-17 | 2022-03-01 | 武汉船用机械有限责任公司 | Nacelle propeller bearing lubricating system |
| WO2023168823A1 (en) * | 2022-03-10 | 2023-09-14 | 烟台杰瑞石油装备技术有限公司 | Lubrication system |
| US11920585B1 (en) * | 2022-09-01 | 2024-03-05 | EKU Power Drives Inc. | Dual loop lubrication and thermal management system for pumps |
| US20240077074A1 (en) * | 2022-09-01 | 2024-03-07 | EKU Power Drives Inc. | Dual loop lubrication and thermal management system for pumps |
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