Plunger pump on-line lubricating device with spraying function and using method of plunger pump on-line lubricating device

Abstract

The invention relates to the technical field of drilling operation plunger pump equipment, and discloses a plunger pump online lubricating device with a spraying function, which comprises a lubricating oil tank, an outlet is connected with a pumping device through an oil filtering device, the pumping device is connected with an overpressure protection device, the overpressure protection device is connected with a cooling device, and an overflow port of the overpressure protection device is communicated with the lubricating oil tank. An outlet of the cooling device is connected with a flow dividing device, one outlet of the flow dividing device is connected with a plunger pump packing through a plunger pump packing lubricating device, the other outlet of the flow dividing device is connected with a plunger pump plunger through a plunger pump plunger lubricating device, and the plunger pump plunger lubricating device is connected with the plunger pump plunger through a spraying pipe. The invention further discloses a using method of the plunger pump online lubricating device with the spraying function. According to the plunger pump on-line lubricating device with the spraying function and the using method of the plunger pump on-line lubricating device, the requirements for wear resistance, cooling, damping buffering, cleaning, rust prevention and corrosion prevention of a plunger and a packing of a plunger pump under the working condition of continuous operation of the plunger pump can be met.

Description

Technical Field

[0001] The invention relates to the technical field of plunger pump equipment for drilling operations, and in particular to an online lubrication device for a plunger pump with a spraying function and a use method thereof. Background Art

[0002] Drilling operation is a very important oil and gas extraction technology nowadays. As an important component of drilling equipment, plunger pumps also play an important role in the field of oil and gas extraction. With the development of drilling technology, the requirements for continuous operation of plunger pumps are getting higher and higher. The existing lubrication device cannot adapt well to the requirements of continuous operation and cooling. Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies of the above-mentioned technology and to provide an online lubrication device for a plunger pump with a spray function and a method of using the same, which can meet the requirements of anti-wear, cooling, shock absorption and buffering, cleaning, and rust and corrosion prevention for the plunger pump plunger and packing under continuous operation of the plunger pump.

[0004] To achieve the above-mentioned purpose, the plunger pump online lubrication device with a spray function designed in the present invention comprises a lubricating oil tank, the outlet of the lubricating oil tank is connected to a pumping device through an oil filtering device, the oil filtering device can purify the lubricating oil and filter out suspended particle impurities in the oil, the outlet of the pumping device is connected to an overpressure protection device, the oil outlet of the overpressure protection device is connected to a cooling device, the overflow port of the overpressure protection device is connected to the lubricating oil tank, the outlet of the cooling device is connected to a diverter device, one outlet of the diverter device is connected to a plunger pump packing through a plunger pump packing lubrication device, and the other outlet is connected to a plunger pump plunger through a plunger pump plunger lubrication device, and the plunger pump plunger lubrication device is connected to the plunger pump plunger through a spray pipe.

[0005] Preferably, a heater and a liquid level gauge are provided in the lubricating oil tank. The heater can be used to preheat the lubricating oil before operation in low-temperature and severe cold areas, and the liquid level gauge can obtain the liquid level of the lubricating oil in the lubricating oil tank.

[0006] Preferably, the pumping device is provided with a hydraulic oil pump and a power device for driving the hydraulic oil pump.

[0007] Preferably, an oil pressure sensor for real-time monitoring of the lubricating oil pressure is provided in the overpressure protection device. When the lubricating oil pressure exceeds a set value, the lubricating oil is sent to the lubricating oil tank through an overflow port to achieve a balanced pressure of the system.

[0008] Preferably, the cooling device includes a thermostat connected to the oil outlet of the overpressure protection device, and the thermostat is provided with an oil temperature sensor to monitor the temperature of the lubricating oil in real time. One outlet of the thermostat is connected to the diverter device, and the other outlet is connected to the diverter device after passing through a heat sink. The thermostat opens or closes the pipeline leading to the heat sink according to the change of oil temperature, changes the circulation range of the cooling medium, and ensures that the temperature of the lubricating oil in the pipeline will not overheat.

[0009] Preferably, the plunger pump packing lubrication device is provided with a throttle valve for regulating the flow of lubricating oil to the plunger pump packing, the plunger pump plunger spray lubrication device is provided with a throttle valve for regulating the flow of lubricating oil to the plunger pump plunger, the plunger pump packing lubrication device can monitor the oil pressure of the lubricating oil to the plunger pump packing, and the plunger pump plunger lubrication device can monitor the oil pressure of the lubricating oil to the plunger pump plunger.

[0010] Preferably, a waste oil recovery device for recovering lubricating oil from the plunger pump packing lubricating device and the plunger pump plunger lubricating device is further provided, the waste oil recovery device is connected to the lubricating oil tank, and the filtered lubricating oil is returned to the lubricating oil tank by gravity.

[0011] Preferably, it also includes an online control system to monitor and control each component, such as being able to automatically control the heater to start according to the ambient temperature, preheat in advance, monitor the liquid level of the lubricating oil tank, and be able to alarm when the lubricating oil is at a low level to remind you to add lubricating oil, and be able to adjust the start and stop and opening degree of the hydraulic oil pump, and be able to adjust the flow direction of the diverter device, and adjust the opening degree of the throttle valve of the plunger pump packing lubrication device and the plunger pump plunger lubrication device. The entire lubrication system can be monitored online, controlled in real time, recorded, stored, played back and automatically generated reports, which is convenient for later review and tracing, and provides early warning and maintenance suggestions. The online control system is connected to a remote control module and can be remotely controlled in a safe area.

[0012] A method for using an online lubrication device for a plunger pump with a spraying function. When the plunger pump works continuously, the pumping device extracts lubrication oil from the lubrication oil tank and filters it through an oil filter device. The filtered lubrication oil is pumped to an overpressure protection device. At this time, if the oil pressure exceeds the value set by the overpressure protection device, part of the lubrication oil will overflow back to the lubrication oil tank to ensure that the oil pressure is within the range set by the overpressure protection device. At the same time, the lubrication oil will enter a cooling device, and the lubrication oil after cooling will enter a diversion device. The diversion device opens a plunger pump packing lubrication device and a plunger pump plunger lubrication device to deliver the lubrication oil to the plunger pump packing and the plunger pump plunger.

[0013] When the plunger pump works intermittently, the pumping device draws lubricating oil from the lubricating oil tank and filters it through the oil filtering device. The filtered lubricating oil is pumped to the overpressure protection device. At this time, if the oil pressure exceeds the value set by the overpressure protection device, part of the lubricating oil will overflow back to the lubricating oil tank to ensure that the oil pressure is within the range set by the overpressure protection device. At the same time, the lubricating oil will enter the cooling device, and the lubricating oil after cooling will enter the diversion device. The diversion device only opens the plunger pump packing lubrication device to send the lubricating oil to the plunger pump packing, thereby achieving the purpose of cooling.

[0014] Preferably, the cooling device includes a thermostat connected to the oil outlet of the overpressure protection device, and an oil temperature sensor is provided on the thermostat. One outlet of the thermostat is connected to the diverter device, and the other outlet is connected to the diverter device after passing through a heat sink. After the lubricating oil enters the thermostat of the cooling device, if the lubricating oil temperature exceeds the set temperature value of the thermostat, the lubricating oil will be cooled through the heat sink, and the cooled lubricating oil will enter the diverter device. If the lubricating oil temperature is within the set temperature value of the thermostat, the lubricating oil will directly enter the diverter device.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. It can adapt to a wide range of working conditions. When the plunger pump is in continuous working condition, the plunger pump packing lubrication device and the plunger pump plunger lubrication device are used for dual lubrication, so that the plunger pump can be better lubricated and cooled, and the service life of the plunger and packing is increased. When the plunger pump is in intermittent working condition, the heat generation will be lower than that in continuous working condition. At this time, only the plunger pump packing lubrication device can be used for lubrication, thereby reducing the energy consumption of the oil pump and the loss of lubricating oil;

[0017] 2. It can better meet the requirements of plunger pumps for anti-wear, cooling, shock absorption, cleaning, and anti-rust and anti-corrosion;

[0018] 3. Equipped with a heating device, it can better adapt to extremely cold working conditions

[0019] 4. Through the online control system, the labor intensity of operators can be reduced, and the labor cost can be reduced;

[0020] 5. It can be remotely controlled, and the equipment one hundred meters away can be controlled in the safe area of ​​the well site, which greatly improves the safety of equipment operation and reduces the operation risk;

[0021] 6. It can monitor the status of each component online, record the temperature of the pumped medium, the temperature and pressure of the lubricating oil, and the number of crankshaft strokes in real time, and can display and monitor the lubricating oil temperature and oil pressure parameters during the operation of the plunger pump, report abnormalities in time, and provide early warnings and maintenance suggestions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the plunger pump online lubrication device with a spraying function of the present invention;

[0023] Figure 2 The figure is a control logic diagram of the plunger pump online lubrication device with a spraying function of the present invention.

[0024] The components in the figure are numbered as follows:

[0025] Lubricating oil tank 1, oil filtering device 2, pumping device 3, overpressure protection device 4, cooling device 5, diverter device 6, plunger pump packing lubrication device 7, plunger pump packing 8, plunger pump plunger lubrication device 9, plunger pump plunger 10, spray pipe 11, thermostat 12, heat dissipation device 13, throttle valve 14, waste oil recovery device 15, online control system 16, remote control module 17. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and beneficial technical effects of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the description of the following embodiments is only for explaining the present invention and cannot be used to limit the protection scope of the present invention.

[0027] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] It should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "set", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be determined according to specific circumstances.

[0029] In addition, the terms "first", "second", and "a" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", and "b" may explicitly or implicitly include one or more of the features. In addition, the meanings of "multiple" and "several" refer to two or more, unless otherwise clearly and specifically defined.

[0030] Example 1

[0031] like Figure 1 As shown, a plunger pump online lubrication device with a spray function comprises a lubricating oil tank 1, the outlet of the lubricating oil tank 1 is connected to a pumping device 3 through an oil filter device 2, the outlet of the pumping device 3 is connected to an overpressure protection device 4, the oil outlet of the overpressure protection device 4 is connected to a cooling device 5, the overflow port of the overpressure protection device 4 is connected to the lubricating oil tank 1, the outlet of the cooling device 5 is connected to a diverter device 6, one outlet of the diverter device 6 is connected to a plunger pump packing 8 through a plunger pump packing lubrication device 7, the other outlet is connected to a plunger pump plunger 10 through a plunger pump plunger lubrication device 9, and the plunger pump plunger lubrication device 9 is connected to the plunger pump plunger 10 through a spray pipe 11.

[0032] When the present embodiment is used, when the plunger pump works continuously, the pumping device 3 extracts the lubricating oil from the lubricating oil tank 1 and filters it through the oil filter device 2. The filtered lubricating oil is pumped to the overpressure protection device 4. At this time, if the oil pressure exceeds the value set by the overpressure protection device 4, part of the lubricating oil will overflow back to the lubricating oil tank 1 to ensure that the oil pressure is within the range set by the overpressure protection device 4. At the same time, the lubricating oil will enter the cooling device 5, and the lubricating oil after cooling will enter the diverter device 6. The diverter device 6 opens the plunger pump packing lubrication device 7 and the plunger pump plunger lubrication device 9 to deliver the lubricating oil to the plunger pump packing 8 and the plunger pump plunger 10.

[0033] When the plunger pump works intermittently, the pumping device 3 draws lubricating oil from the lubricating oil tank 1 and filters it through the oil filtering device 2. The filtered lubricating oil is pumped to the overpressure protection device 4. At this time, if the oil pressure exceeds the value set by the overpressure protection device 4, part of the lubricating oil will overflow back to the lubricating oil tank 1 to ensure that the oil pressure is within the range set by the overpressure protection device 4. At the same time, the lubricating oil will enter the cooling device 5, and the lubricating oil after cooling will enter the diversion device 6. The diversion device 6 only opens the plunger pump packing lubrication device 7 to send the lubricating oil to the plunger pump packing 8.

[0034] Example 2

[0035] like Figure 1 As shown, a plunger pump online lubrication device with a spray function comprises a lubricating oil tank 1, the outlet of the lubricating oil tank 1 is connected to a pumping device 3 through an oil filter device 2, the outlet of the pumping device 3 is connected to an overpressure protection device 4, the oil outlet of the overpressure protection device 4 is connected to a cooling device 5, the overflow port of the overpressure protection device 4 is connected to the lubricating oil tank 1, the outlet of the cooling device 5 is connected to a diverter device 6, one outlet of the diverter device 6 is connected to a plunger pump packing 8 through a plunger pump packing lubrication device 7, the other outlet is connected to a plunger pump plunger 10 through a plunger pump plunger lubrication device 9, and the plunger pump plunger lubrication device 9 is connected to the plunger pump plunger 10 through a spray pipe 11.

[0036] In addition, in this embodiment, a heater and a liquid level gauge are provided in the lubricating oil tank 1 . The heater can be used to preheat the lubricating oil before operation in low-temperature and severe cold areas, and the liquid level gauge can obtain the liquid level of the lubricating oil in the lubricating oil tank 1 .

[0037] In addition, a hydraulic oil pump and a power device for driving the hydraulic oil pump are provided in the pumping device 3 .

[0038] Again, an oil pressure sensor for real-time monitoring of the lubricating oil pressure is provided in the overpressure protection device 4. When the lubricating oil pressure exceeds a set value, the lubricating oil is sent to the lubricating oil tank 1 through an overflow port to achieve a balanced pressure of the system.

[0039] At the same time, in this embodiment, the cooling device 5 includes a thermostat 12 connected to the oil outlet of the overpressure protection device 4, and an oil temperature sensor is provided on the thermostat 12. One outlet of the thermostat 12 is connected to the diverter device 6, and the other outlet is connected to the diverter device 6 after passing through the heat sink 13. The thermostat 12 opens or closes the pipeline leading to the heat sink 13 according to the change of oil temperature, changes the circulation range of the cooling medium, and ensures that the temperature of the lubricating oil in the pipeline will not overheat.

[0040] In this embodiment, a throttle valve 14 for adjusting the flow of lubricating oil to the plunger pump packing 8 is provided in the plunger pump packing lubrication device 7, and a throttle valve 14 for adjusting the flow of lubricating oil to the plunger pump plunger 10 is provided in the plunger pump plunger spray lubrication device 9. The plunger pump packing lubrication device 7 can monitor the oil pressure of the lubricating oil to the plunger pump packing 8, and the plunger pump plunger lubrication device 9 can monitor the oil pressure of the lubricating oil to the plunger pump plunger 10.

[0041] In this embodiment, a waste oil recovery device 15 is provided for recovering lubricating oil from the plunger pump packing lubricating device 7 and the plunger pump plunger lubricating device 9. The waste oil recovery device 15 is connected to the lubricating oil tank 1 and returns the filtered lubricating oil to the lubricating oil tank 1 by gravity.

[0042] Finally, combine Figure 2As shown, the present embodiment also includes an online control system 16, which is electrically connected to the heater and the liquid level gauge in the lubricating oil tank 1, and can automatically control the heater to start according to the ambient temperature, preheat in advance, monitor the liquid level of the lubricating oil tank, and can alarm when the lubricating oil is at a low liquid level to remind you to add lubricating oil; it is electrically connected to the hydraulic oil pump provided in the pumping device 3, and can adjust the start and stop and the opening degree of the hydraulic oil pump; it is electrically connected to the overpressure protection device 4, and according to the lubricating oil pressure obtained by the oil pressure sensor, it is determined whether to open the overflow port to send the lubricating oil to the lubricating oil tank 1. , to achieve the balanced pressure of the system; electrically connected to the cooling device 5, so that the thermostat 12 opens or closes the pipeline leading to the heat dissipation device 13 according to the change of oil temperature, and changes the circulation range of the cooling medium to ensure that the temperature of the lubricating oil in the pipeline will not overheat; electrically connected to the diverter device 6, able to adjust the flow direction of the diverter device 6, electrically connected to the throttle valve 14 of the plunger pump packing lubrication device 7 and the plunger pump plunger lubrication device 9, adjust the opening degree of the throttle valve 14 of the plunger pump packing lubrication device 7 and the plunger pump plunger lubrication device 9, and electrically connected to the plunger pump to obtain the temperature of the plunger pump.

[0043] When the present embodiment is used, when the plunger pump works continuously, the pumping device 3 extracts the lubricating oil from the lubricating oil tank 1 and filters it through the oil filter device 2. The filtered lubricating oil is pumped to the overpressure protection device 4. At this time, if the oil pressure exceeds the value set by the overpressure protection device 4, part of the lubricating oil will overflow back to the lubricating oil tank 1 to ensure that the oil pressure is within the range set by the overpressure protection device 4. At the same time, the lubricating oil will enter the thermostat 12 of the cooling device 5. If the lubricating oil temperature exceeds the set temperature value of the thermostat 12, the lubricating oil will be cooled by the heat dissipation device 13. The cooled lubricating oil enters the diverter device 6. If the lubricating oil temperature is within the set temperature value of the thermostat 12, the lubricating oil directly enters the diverter device 6. The diverter device 6 opens the plunger pump packing lubrication device 7 and the plunger pump plunger lubrication device 9, and sends the lubricating oil to the plunger pump packing 8 and the plunger pump plunger 10, thereby achieving the purpose of cooling.

[0044] When the plunger pump works intermittently, the pumping device 3 draws lubricating oil from the lubricating oil tank 1 and filters it through the oil filtering device 2. The filtered lubricating oil is pumped to the overpressure protection device 4. At this time, if the oil pressure exceeds the value set by the overpressure protection device 4, part of the lubricating oil will overflow back to the lubricating oil tank 1 to ensure that the oil pressure is within the range set by the overpressure protection device 4. At the same time, the lubricating oil will enter the thermostat 12 of the cooling device 5. If the lubricating oil temperature exceeds the set temperature value of the thermostat 12, the lubricating oil will be cooled by the heat dissipation device 13. The cooled lubricating oil enters the diverter device 6. If the lubricating oil temperature is within the set temperature value of the thermostat 12, the lubricating oil directly enters the diverter device 6. The diverter device 6 only opens the plunger pump packing lubrication device 7 to send the lubricating oil to the plunger pump packing 8, thereby achieving the purpose of cooling.

[0045] During the above operation, the waste oil recovery device 15 can recover the lubricating oil from the plunger pump packing 8 and the plunger pump plunger 10, and finally the lubricating oil will be filtered and returned to the lubricating oil tank 1 under the force of gravity. In this workflow, the online control system 16 can monitor the lubrication status of the plunger pump online, control it in real time, record and store it, play it back, and automatically generate reports, report abnormalities in time, and provide early warnings and maintenance suggestions.

[0046] The plunger pump online lubrication device with a spraying function and the use method thereof of the present invention can adapt to a wide range of working conditions. When the plunger pump is in a continuous working condition, the plunger pump packing lubrication device 7 and the plunger pump plunger lubrication device 9 are used for dual lubrication, so that the plunger pump can be better lubricated and cooled, and the service life of the plunger and the packing is increased. When the plunger pump is in an intermittent working condition, the heat generation will be lower than that in a continuous working condition. At this time, only the plunger pump packing lubrication device 7 can be used for lubrication, thereby reducing the energy consumption of the oil pump and the loss of lubricating oil; it can better meet the plunger pump's requirements for anti-wear, cooling, shock absorption and buffering, cleaning and protection The requirements for rust and corrosion prevention are met; it has a heating device and can better adapt to extremely cold working conditions; through the online control system 16, the labor intensity of operators can be reduced, and the labor cost of employment can be reduced; it can be remotely controlled and can control equipment one hundred meters away in the safe area of ​​the well site, which greatly improves the safety of equipment operation and reduces operational risks; it can monitor the status of each component online, and can record the temperature of the pumped medium, the temperature and pressure of the lubricating oil, and the number of crankshaft strokes in real time; it can display and monitor the lubricating oil temperature and oil pressure parameters during the operation of the plunger pump, report abnormalities in time, and provide early warnings and maintenance suggestions.

[0047] It should be noted that the description of the above technical solutions is exemplary, and this specification can be embodied in different forms and should not be interpreted as being limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the disclosure of the present invention thorough and complete, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solutions of the present invention are limited only by the scope of the claims.

[0048] The various aspects disclosed for describing the present specification and claims are merely examples, and therefore, the present specification and claims are not limited to the details shown. In the above description, when the detailed description of the related known functions or configurations is determined to be unnecessary to obscure the focus of the present specification and claims, the detailed description will be omitted.

[0049] Finally, it should be pointed out that the above content is a further detailed description of the invention in combination with specific implementation methods. It cannot be considered that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, simple replacements made without departing from the concept of the present invention should be regarded as belonging to the protection scope of the present invention. The above embodiments are only more representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there can be many variations. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims

1. A plunger pump online lubrication device with a spraying function, comprising a lubricating oil tank (1), characterized in that: The outlet of the lubricating oil tank (1) is connected to a pumping device (3) through an oil filter device (2); the outlet of the pumping device (3) is connected to an overpressure protection device (4); the oil outlet of the overpressure protection device (4) is connected to a cooling device (5); the overflow port of the overpressure protection device (4) is in communication with the lubricating oil tank (1); the outlet of the cooling device (5) is connected to a flow diversion device (6); one outlet of the flow diversion device (6) is connected to a plunger pump packing (8) through a plunger pump packing lubrication device (7); the other outlet is connected to a plunger pump plunger (10) through a plunger pump plunger lubrication device (9); the plunger pump plunger lubrication device (9) is connected to the plunger pump plunger (10) through a spray pipe (11).

2. According to claim 1, the plunger pump online lubrication device with spray function is characterized in that: The lubricating oil tank (1) is provided with a heater and a liquid level meter.

3. The plunger pump online lubrication device with a spraying function according to claim 1 is characterized in that: The pumping device (3) is provided with a hydraulic oil pump and a power device for driving the hydraulic oil pump to work.

4. The plunger pump online lubrication device with spray function according to claim 1, characterized in that: The overpressure protection device (4) is provided with an oil pressure sensor for real-time monitoring of the lubricating oil pressure. When the lubricating oil pressure exceeds a set value, the lubricating oil is delivered to the lubricating oil tank (1) through an overflow port.

5. The plunger pump online lubrication device with a spraying function according to claim 1 is characterized in that: The cooling device (5) comprises a thermostat (12) connected to the oil outlet of the overpressure protection device (4), an oil temperature sensor is provided on the thermostat (12), one outlet of the thermostat (12) is connected to the diverter device (6), and the other outlet is connected to the diverter device (6) after passing through a heat dissipation device (13).

6. The plunger pump online lubrication device with spray function according to claim 1, characterized in that: The plunger pump packing lubrication device (7) is provided with a throttle valve (14) for adjusting the flow of lubricating oil to the plunger pump packing (8), and the plunger pump plunger spray lubrication device (9) is provided with a throttle valve (14) for adjusting the flow of lubricating oil to the plunger pump plunger (10).

7. The plunger pump online lubrication device with a spraying function according to claim 1 is characterized in that: A waste oil recovery device (15) is also provided for recovering lubricating oil from the plunger pump packing lubricating device (7) and the plunger pump plunger lubricating device (9). The waste oil recovery device (15) is connected to the lubricating oil tank (1) and returns the filtered lubricating oil to the lubricating oil tank (1) by gravity.

8. The plunger pump online lubrication device with spray function according to claim 1, characterized in that: It also includes an online control system (16) for monitoring and controlling each component, and the online control system (16) is connected to a remote control module (17).

9. A method for using the plunger pump online lubrication device with a spraying function as claimed in claim 1, characterized in that: When the plunger pump is working continuously, the pumping device (3) extracts lubricating oil from the lubricating oil tank (1) and filters it through the oil filter device (2). The filtered lubricating oil is pumped to the overpressure protection device (4). At this time, if the oil pressure exceeds the value set by the overpressure protection device (4), part of the lubricating oil will overflow back to the lubricating oil tank (1) to ensure that the oil pressure is within the range set by the overpressure protection device (4). At the same time, the lubricating oil will enter the cooling device (5). The lubricating oil after cooling will enter the diverter device (6). The diverter device (6) opens the plunger pump packing lubrication device (7) and the plunger pump plunger lubrication device (9) to send the lubricating oil to the plunger pump packing (8) and the plunger pump plunger (10). When the plunger pump works intermittently, the pumping device (3) extracts lubricating oil from the lubricating oil tank (1) and filters it through the oil filter device (2). The filtered lubricating oil is pumped to the overpressure protection device (4). At this time, if the oil pressure exceeds the value set by the overpressure protection device (4), part of the lubricating oil will overflow back to the lubricating oil tank (1) to ensure that the oil pressure is within the range set by the overpressure protection device (4). At the same time, the lubricating oil will enter the cooling device (5). The lubricating oil after cooling will enter the diversion device (6). The diversion device (6) only opens the plunger pump packing lubrication device (7) to send the lubricating oil to the plunger pump packing (8).

10. The method for using the plunger pump online lubrication device with a spraying function according to claim 9, characterized in that: The cooling device (5) comprises a thermostat (12) connected to the oil outlet of the overpressure protection device (4); an oil temperature sensor is provided on the thermostat (12); one outlet of the thermostat (12) is connected to the diverter device (6); the other outlet is connected to the diverter device (6) after passing through a heat sink (13); after the lubricating oil enters the thermostat (12) of the cooling device (5), if the lubricating oil temperature exceeds the set temperature value of the thermostat (12), the lubricating oil is cooled through the heat sink (13), and the cooled lubricating oil enters the diverter device (6); if the lubricating oil temperature is within the set temperature value of the thermostat (12), the lubricating oil directly enters the diverter device (6).

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