CN216767740U - Plunger pump power end lubricating system - Google Patents
Plunger pump power end lubricating system Download PDFInfo
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- CN216767740U CN216767740U CN202220127639.6U CN202220127639U CN216767740U CN 216767740 U CN216767740 U CN 216767740U CN 202220127639 U CN202220127639 U CN 202220127639U CN 216767740 U CN216767740 U CN 216767740U
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Abstract
The utility model provides a plunger pump power end lubricating system which comprises a low-pressure lubricating oil port, a high-pressure lubricating oil port and an oil return port on a plunger pump, wherein an externally-connected circulating pipeline is arranged between the oil return port and the low-pressure lubricating oil port as well as between the oil return port and the high-pressure lubricating oil port, the circulating pipeline comprises an external circulating device, a temperature control device and a filtering pipeline, the oil return port is communicated with an oil tank in the external circulating device, the filtering pipeline is divided into a high-pressure oil path and a low-pressure oil path, and the high-pressure oil path and the low-pressure oil path are respectively communicated with the high-pressure lubricating oil port and the low-pressure lubricating oil port. And an external circulation device, a temperature control device and a filtering pipeline are adopted, so that the cleanliness of the lubricating oil is improved. The filtering pipelines are set to have different pressures, and the filtering precision is improved and the lubrication sufficiency is enhanced through oil absorption filtering, primary fine filtering and secondary fine filtering. The temperature control device is provided with the heater and the radiator, so that the working temperature range of the lubricating oil is reduced, the influence of high viscosity on the working performance is avoided, and the device is suitable for popularization and use.
Description
Technical Field
The utility model relates to the field of oil and gas resource fracturing equipment, in particular to a power end lubricating system of a fracturing pump of fracturing equipment.
Background
In the fracturing construction process of an oil and gas well, the fracturing equipment mainly has the function of realizing the pressurization of fracturing fluid, a plunger pump which is a core component is a horizontal reciprocating pump driven by a crankshaft and a connecting rod, a box body provided with the crankshaft and the connecting rod is commonly called as a power end, the power end of the plunger pump comprises parts such as an input shaft, a speed reduction assembly, a shell, a bearing, a crosshead and a small connecting rod besides the crankshaft and the connecting rod, and the main lubricating points comprise the crankshaft, the bearing, the small connecting rod and the like. The power end of the plunger pump is used as a mechanical acting part, and the quality of the lubricating system directly affects the service life and the reliability of the plunger pump, so that the lubricating system of the power end of the plunger pump is optimized, the lubricating sufficiency is enhanced, and the plunger pump has remarkable practical significance.
For a long time, a plunger pump adopts a lubricating pressure type active lubricating mode, one plunger pump power end is matched with 1 lubricating pump, 1 set of oil filter, an auxiliary matched oil tank, an overflow valve and other parts, a crankshaft, a bearing, a crosshead and the like are lubricated at a plurality of lubricating points, although the lubricating mode has a simple structure, the difference of rotating and sliding motion modes of the power end is ignored, and a single oil filter is adopted, so that the filtering precision is not high; and the same pressure control is adopted, the oil distribution completely depends on the oil passage and the distribution pipeline caliber design, and because the abrasion loss of each part is completely different, the system is difficult to realize the sufficient lubrication of each part simultaneously during the actual work, so the service life of the tile of the sliding part is obviously shorter, and the use and maintenance cost and the workload of the equipment are increased.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a plunger pump power end lubricating system, which solves the problem of the existing plunger pump power end lubricating system
The single pressure control of lubricating system can not carry out abundant lubrication, and the cleanliness of lubricating oil in the oil tank is not high, and filter fineness is not high in the internal circulation pipeline, and ambient temperature leads to the tile life-span of sliding part obviously to be short to the side to the influence of system, has increased equipment use maintenance cost and work load.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: including lubricated hydraulic fluid port of low pressure, the lubricated hydraulic fluid port of high pressure and return oil port on the plunger pump, characterized by: and an external circulating pipeline is arranged between the oil return port and the low-pressure lubricating oil port and between the oil return port and the high-pressure lubricating oil port, the circulating pipeline comprises an external circulating device, a temperature control device and a filtering pipeline, the oil return port is communicated with an oil tank in the external circulating device, the filtering pipeline is divided into a high-pressure oil way and a low-pressure oil way, and the high-pressure oil way and the low-pressure oil way are respectively communicated with the high-pressure lubricating oil port and the low-pressure lubricating oil port.
In the preferred scheme, the external circulation device comprises an oil tank, a circulation filter and a circulation pump, wherein the oil tank, the circulation filter and the circulation pump are connected in series through pipelines to form a self-circulation system for primarily filtering lubricating oil in the oil tank.
In a preferred scheme, the temperature control device comprises a heater and a radiator which are connected in parallel, one end of the heater and one end of the radiator are communicated with the oil tank through a three-way change-over valve, and the other end of the heater and one end of the radiator are communicated with the filtering pipeline through a three-way change-over valve.
In the preferred scheme, a temperature sensor is arranged on a pipeline connecting the three-way conversion valve and the oil tank, and the temperature sensor is used for controlling the opening of the three-way conversion valve.
In the preferred scheme, an oil suction filter and a lubricating pump which are connected in series are arranged between the three-way change-over valve and the filter pipeline.
In a preferred scheme, a high-pressure oil path and a low-pressure oil path in a filtering pipeline comprise a primary fine filter, a temperature saver, a secondary fine filter and an overflow valve, and the primary fine filter, the temperature saver, the secondary fine filter and the overflow valve are communicated in sequence through pipelines.
In the preferred scheme, primary fine filtration in the high-pressure oil path and the low-pressure oil path is communicated with a lubricating pump, and overflow valves in the high-pressure oil path and the low-pressure oil path are respectively communicated with a high-pressure lubricating oil port and a low-pressure lubricating oil port.
The utility model provides a plunger pump power end lubricating system which adopts an external circulation device, a temperature control device and a filtering pipeline to divide a plunger pump power end into a high-pressure loop and a low-pressure loop. The external circulation device filters the lubricating oil in the oil filter tank, so that the cleanliness of the lubricating oil in the lubricating oil is improved; the two filtering pipelines are provided with different pressures to respectively provide oil absorption filtering, primary fine filtering and secondary fine filtering cooling for the two parts, so that the filtering precision is improved, and the lubricating sufficiency of the power end of the plunger pump is enhanced; the temperature control device is provided with the heater and the radiator, so that the working temperature range of the lubricating oil is reduced, the working temperature range of the lubricating oil is more accurate, the influence of high viscosity on the working performance of the plunger pump is avoided, and the plunger pump is suitable for popularization and use.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a connection diagram of the overall system of the present invention;
in the figure: a plunger pump power end 1; circularly filtering 2; a circulation pump 3; an oil tank 4; a temperature sensor 5; a three-way change-over valve 6; a heater 7; a heat sink 8; an oil absorption filter 9; a lubrication pump 10; primary fine filtering 11; a thermostat 12; secondary fine filtration 13; an overflow valve 14; a low pressure inlet port 15; a high pressure inlet port 16; and an oil return port 17.
Detailed Description
Example 1
As shown in fig. 1, a plunger pump power end lubrication system includes a low-pressure lubrication oil port 15, a high-pressure lubrication oil port 16 and an oil return port 17 on a plunger pump, and is characterized in that: an external circulation pipeline is arranged between the oil return port 17 and the low-pressure lubricating oil port 15 and the high-pressure lubricating oil port 16, the circulation pipeline comprises an external circulation device, a temperature control device and a filtering pipeline, the oil return port 17 is communicated with an oil tank 4 in the external circulation device, the filtering pipeline is divided into a high-pressure oil path and a low-pressure oil path, and the high-pressure oil path and the low-pressure oil path are respectively communicated with the high-pressure lubricating oil port 16 and the low-pressure lubricating oil port 15. From this structure, outer circulating device carries out prefilter to oil tank lubricating oil, improves the lubricating oil precision. The temperature control device heats or dissipates lubricating oil in the system, is used for accurately controlling the oil temperature of the system, eliminates the influence of the environmental temperature on the system and protects the whole system. The power end of the plunger pump is divided into a high-pressure part and a low-pressure part according to the type and the position of a lubricating point for lubrication respectively, so that the lubrication sufficiency is enhanced, the problem of short service life of parts is solved, and the overall service life and the use reliability of equipment are improved.
In the preferred scheme, the external circulation device comprises an oil tank 4, a circulation filter 2 and a circulation pump 3, wherein the oil tank 4, the circulation filter 2 and the circulation pump 3 are connected in series through pipelines to form a self-circulation system for primarily filtering lubricating oil in the oil tank 4. By the structure, the independent oil tank self-circulation function of the oil tank is realized, and the filtering precision of the oil tank is improved.
In a preferable scheme, the temperature control device comprises a heater 7 and a radiator 8 which are connected in parallel, one end of the heater 7 and one end of the radiator 8 are communicated with the oil tank 4 through a three-way change-over valve 6, and the other end of the heater 7 and the other end of the radiator are communicated with the filtering pipeline through the three-way change-over valve 6. With the structure, the heater can heat the lubricating oil, and the lubricating oil is preheated under the low-temperature environment condition, so that the temperature in the oil tank reaches the appropriate temperature. The radiator can radiate the lubricating oil and take away the heat of the lubricating system, so that the temperature of the lubricating oil is kept within a proper range.
In a preferable scheme, a temperature sensor 5 is arranged on a pipeline connecting the three-way switching valve 6 and the oil tank 4, and the temperature sensor 5 is used for controlling the opening of the three-way switching valve 6. By the structure, the temperature sensor receives the temperature of lubricating oil in the system, the lubricating oil is cooled or heated through the opening of the three-way change-over valve, the oil temperature is controlled, the influence of the ambient temperature on the lubricating system is reduced, and the service life of parts is prolonged.
In the preferred scheme, an oil suction filter 9 and a lubricating pump 10 which are connected in series are arranged between the three-way switching valve 6 and the filtering pipeline. From this structure, the oil absorption is strained and is the system lubricating oil prefilter, and the lubricating pump provides power for lubricating oil. And ensuring the normal operation of the system.
In a preferable scheme, a high-pressure oil path and a low-pressure oil path in the filtering pipeline comprise a primary fine filter 11, a thermostat 12, a secondary fine filter 13 and an overflow valve 14, and the primary fine filter 11, the thermostat 12, the secondary fine filter 13 and the overflow valve 14 are communicated in sequence through pipelines. By the structure, the filtering precision of each filter is set according to different grades, the filtering precision of secondary fine filtering can reach 10-15 microns, and the lubrication degree of lubricating oil is greatly improved. The thermostat controls the flow of lubricating oil, and the overflow valve protects the safety of a lubricating oil system. The system pressure is enabled not to exceed the allowable value, and therefore the lubricating system is guaranteed not to have accidents due to overhigh pressure.
In a preferable scheme, a primary fine filter 11 in a high-pressure oil path and a primary fine filter 11 in a low-pressure oil path are communicated with a lubricating pump 10, and overflow valves 14 in the high-pressure oil path and the low-pressure oil path are respectively communicated with a high-pressure lubricating oil port 16 and a low-pressure lubricating oil port 15. By this structure, the lubricating pump can provide power for high-pressure oil circuit and low-pressure oil circuit simultaneously, and then lifting means's variety and reliability.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.
Claims (7)
1. The utility model provides a plunger pump power end lubricating system, includes lubricated hydraulic fluid port of low pressure (15), high-pressure lubrication hydraulic fluid port (16) and oil return port (17) on the plunger pump, characterized by: an external circulation pipeline is arranged between the oil return port (17) and the low-pressure lubricating oil port (15) and between the oil return port (17) and the high-pressure lubricating oil port (16), the circulation pipeline comprises an external circulation device, a temperature control device and a filtering pipeline, the oil return port (17) is communicated with an oil tank (4) in the external circulation device, the filtering pipeline is divided into a high-pressure oil way and a low-pressure oil way, and the high-pressure oil way and the low-pressure oil way are respectively communicated with the high-pressure lubricating oil port (16) and the low-pressure lubricating oil port (15).
2. The plunger pump power end lubrication system as claimed in claim 1, wherein: the external circulation device comprises an oil tank (4), a circulation filter (2) and a circulation pump (3), wherein the oil tank (4), the circulation filter (2) and the circulation pump (3) are connected in series through pipelines to form a self-circulation system for preliminarily filtering lubricating oil in the oil tank (4).
3. The plunger pump power end lubrication system of claim 1, wherein: the temperature control device comprises a heater (7) and a radiator (8) which are connected in parallel, one end of the heater (7) and one end of the radiator (8) are communicated with the oil tank (4) through a three-way change-over valve (6), and the other end of the heater (7) and the other end of the radiator are communicated with the filtering pipeline through the three-way change-over valve (6).
4. The plunger pump power end lubrication system of claim 3, wherein: a pipeline connecting the three-way change-over valve (6) and the oil tank (4) is provided with a temperature sensor (5), and the temperature sensor (5) is used for controlling the opening of the three-way change-over valve (6).
5. The plunger pump power end lubrication system of claim 3, wherein: an oil suction filter (9) and a lubricating pump (10) which are connected in series are arranged between the three-way change-over valve (6) and the filter pipeline.
6. The plunger pump power end lubrication system of claim 1, wherein: the high-pressure oil circuit and the low-pressure oil circuit in the filtering pipeline comprise a primary fine filter (11), a thermostat (12), a secondary fine filter (13) and an overflow valve (14), and the primary fine filter (11), the thermostat (12), the secondary fine filter (13) and the overflow valve (14) are communicated in sequence through pipelines.
7. The plunger pump power end lubrication system of claim 6, wherein: the primary fine filter (11) in the high-pressure oil path and the low-pressure oil path is communicated with the lubricating pump (10), and the overflow valves (14) in the high-pressure oil path and the low-pressure oil path are respectively communicated with the high-pressure lubricating oil port (16) and the low-pressure lubricating oil port (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220127639.6U CN216767740U (en) | 2022-01-18 | 2022-01-18 | Plunger pump power end lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220127639.6U CN216767740U (en) | 2022-01-18 | 2022-01-18 | Plunger pump power end lubricating system |
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| Publication Number | Publication Date |
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| CN216767740U true CN216767740U (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220127639.6U Active CN216767740U (en) | 2022-01-18 | 2022-01-18 | Plunger pump power end lubricating system |
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| CN (1) | CN216767740U (en) |
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- 2022-01-18 CN CN202220127639.6U patent/CN216767740U/en active Active
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