Plunger pump online lubricating device with spraying function

Abstract

The utility model relates to the technical field of drilling operation plunger pump equipment, and discloses a plunger pump on-line 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, and the overpressure protection device is connected with a cooling device. 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, and the other outlet of the flow dividing device is connected with a plunger pump plunger through a plunger pump plunger lubricating device. The plunger pump plunger lubricating device is connected with a plunger pump plunger through a spraying pipe. The plunger pump on-line lubricating device with the spraying function can meet the requirements for wear resistance, cooling, damping and buffering, cleaning, rust prevention and corrosion prevention of the plunger and the packing of the plunger pump under the working condition of continuous operation of the plunger pump.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drilling operation plunger pump equipment, and particularly relates to a plunger pump on-line lubricating device with a spraying function. BACKGROUND

[0002] Drilling operation is a very important oil and gas exploitation technology at present, and the plunger pump, as an important component of drilling equipment, also plays an important role in the field of oil and gas exploitation. With the development of drilling technology, the requirements for continuous operation conditions of the plunger pump are becoming higher and higher, and the existing lubricating device cannot well adapt to the requirements of continuous operation conditions and cooling. SUMMARY

[0003] The utility model discloses a plunger pump on-line lubricating device with a spraying function, which can meet the requirements of wear resistance, cooling, shock absorption and buffering, cleaning and rust and corrosion prevention for the plunger and the packing of the plunger pump under continuous operation conditions of the plunger pump.

[0004] To achieve the above-mentioned purpose, the plunger pump on-line lubricating device with a spraying function designed by the utility model comprises a lubricating oil tank, the outlet of the lubricating oil tank is connected with a pumping device through a filtering device, the filtering device can purify the lubricating oil, filter the suspended particulate impurities in the oil product, the outlet of the pumping device is connected with an overpressure protection device, the oil outlet of the overpressure protection device is connected with a cooling device, the overflow port of the overpressure protection device is communicated with the lubricating oil tank, the outlet of the cooling device is connected with a shunt device, one outlet of the shunt device is connected with a plunger pump packing through a plunger pump packing lubricating device, and the other outlet of the shunt 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.

[0005] Preferably, a heater and a liquid level meter are arranged in the lubricating oil tank, the heater can be used for preheating the lubricating oil before operation in low-temperature cold regions, and the liquid level meter can obtain the liquid level of the lubricating oil in the lubricating oil tank.

[0006] Preferably, a hydraulic oil pump and a power device for driving the hydraulic oil pump to work are arranged in the pumping device.

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

[0008] Preferably, the cooling device comprises a thermostat in communication with the oil outlet of the overpressure protection device, the thermostat is provided with an oil temperature sensor for real-time monitoring of the lubricating oil temperature, one outlet of the thermostat is connected with the flow dividing device, and the other outlet is connected with the flow dividing device through a heat dissipation device, the thermostat opens or closes the pipeline to the heat dissipation device according to the oil temperature change, changes the circulation range of the cooling medium, and ensures that the temperature of the lubricating oil in the pipeline is not overheated.

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

[0010] Preferably, the waste oil recovery device for recovering lubricating oil from the piston pump packing lubricating device and the piston pump piston lubricating device is further provided, and the waste oil recovery device is in communication with the lubricating oil tank and sends the filtered lubricating oil back to the lubricating oil tank through gravity.

[0011] Preferably, the online control system is further included, which monitors and controls each component, such as automatically controlling the heater to be turned on according to the ambient temperature, preheating in advance, monitoring the liquid level of the lubricating oil tank and being able to alarm when the lubricating oil is at a low liquid level, reminding to add lubricating oil, being able to adjust the start-stop and opening degree of the hydraulic oil pump, being able to adjust the flow direction of the flow dividing device, being able to adjust the opening degree of the throttle valves of the piston pump packing lubricating device and the piston pump piston lubricating device, being able to perform online monitoring, real-time regulation and control, record storage, playback and automatic report generation on the entire lubricating system, facilitating later review and traceability, providing early warning and maintenance suggestions, and the online control system is connected with a remote control module and is able to be remotely controlled in a safe area.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The working condition range can be adapted, when the piston pump is in continuous operation condition, the piston pump packing lubricating device and the piston pump piston lubricating device are used for double lubrication, so that the piston pump can be better lubricated and cooled, and the service life of the piston and the packing is improved, when the piston pump is in intermittent condition, the heat generation is lower than that in continuous condition, at this time, only the piston pump packing lubricating device can be used for lubrication, so that the energy consumption of the oil pump and the lubricating oil loss are reduced.

[0014] 2. The requirements of the piston pump for wear resistance, cooling, shock absorption and buffering, cleaning and rust and corrosion prevention can be better met.

[0015] 3. With heating device, can better adapt to extremely cold working condition

[0016] 4. Through online control system, can reduce labor intensity of operator, reduce labor cost;

[0017] 5. Can carry out remote control, can control equipment 100 meters away in safe area of well site, greatly improve safety of equipment operation, reduce operation risk;

[0018] 6. Can on-line monitor state of each component, can record pump injection medium temperature, lubricating oil temperature and pressure, crankshaft stroke, can display and monitor lubricating oil temperature and pressure parameters of plunger pump operation, report abnormality in time, provide early warning and maintenance suggestion. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is structure schematic view of the online lubricating device of the plunger pump with spraying function of the utility model;

[0020] Figure 2 It is control logic schematic view of the online lubricating device of the plunger pump with spraying function of the utility model.

[0021] The reference signs of various components in the drawing are as follows:

[0022] Lubricating oil tank 1, oil filter device 2, pumping device 3, overpressure protection device 4, cooling device 5, shunt device 6, plunger pump packing lubricating device 7, plunger pump packing 8, plunger pump plunger lubricating device 9, plunger pump plunger 10, spraying 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

[0023] In order to make the purpose, technical scheme and beneficial technical effect of the utility model more clear and obvious, the utility model is further described in detail in combination with the drawings and specific embodiments. It should be explained that the description of the following embodiments is only for explaining the utility model, and cannot limit the protection scope of the utility model.

[0024] It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0025] It should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting", etc. should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more features. In addition, the meaning of "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0027] Embodiment 1

[0028] As Figure 1 shown, a plunger pump with a spraying function online lubricating device, comprising a lubricating oil tank 1, the outlet of the lubricating oil tank 1 is connected with pumping device 3 through oil filter device 2, the outlet of pumping device 3 is connected with overpressure protection device 4, the oil outlet of overpressure protection device 4 is connected with cooling device 5, the overflow port of overpressure protection device 4 is communicated with lubricating oil tank 1, the outlet of cooling device 5 is connected with shunt device 6, one outlet of shunt device 6 is connected with plunger pump packing 8 through plunger pump packing lubricating device 7, the other outlet is connected with plunger pump plunger 10 through plunger pump plunger lubricating device 9, plunger pump plunger lubricating device 9 is connected with plunger pump plunger 10 through spraying pipe 11.

[0029] When the plunger pump is continuously used in this embodiment, pumping device 3 extracts lubricating oil from lubricating oil tank 1, and filters it through oil filter device 2. The filtered lubricating oil is pumped to overpressure protection device 4. At this time, if the oil pressure exceeds the set value of overpressure protection device 4, part of the lubricating oil will overflow back to lubricating oil tank 1, ensuring that the oil pressure is within the range set by overpressure protection device 4. At the same time, the lubricating oil will enter cooling device 5, and the cooled lubricating oil will enter shunt device 6. Shunt device 6 opens plunger pump packing lubricating device 7 and plunger pump plunger lubricating device 9, and sends lubricating oil to plunger pump packing 8 and plunger pump plunger 10.

[0030] 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, and the filtered lubricating oil is pumped to the overpressure protection device 4, at this time, if the oil pressure exceeds the set value of the overpressure protection device 4, part of the lubricating oil will overflow back to the lubricating oil tank 1, ensuring 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 cooled lubricating oil will enter the shunt device 6, which only opens the plunger pump packing lubricating device 7 to send lubricating oil to the plunger pump packing 8.

[0031] Example 2

[0032] As shown in Figure 1 A plunger pump online lubricating device with a spraying function, comprising a lubricating oil tank 1, the outlet of the lubricating oil tank 1 is connected with a pumping device 3 through an oil filtering device 2, the outlet of the pumping device 3 is connected with an overpressure protection device 4, the oil outlet of the overpressure protection device 4 is connected with a cooling device 5, the overflow port of the overpressure protection device 4 is communicated with the lubricating oil tank 1, the outlet of the cooling device 5 is connected with a shunt device 6, one outlet of the shunt device 6 is connected with a plunger pump packing 8 through a plunger pump packing lubricating device 7, the other outlet is connected with a plunger pump plunger 10 through a plunger pump plunger lubricating device 9, and the plunger pump plunger lubricating device 9 is connected with the plunger pump plunger 10 through a spraying pipe 11.

[0033] In addition, in the embodiment, a heater and a liquid level gauge are arranged in the lubricating oil tank 1, the heater can be used for preheating the lubricating oil before operation in low-temperature cold regions, and the liquid level gauge can obtain the liquid level of the lubricating oil in the lubricating oil tank 1.

[0034] In addition, a hydraulic oil pump and a power device for driving the hydraulic oil pump to work are arranged in the pumping device 3.

[0035] In addition, in the embodiment, a heater and a liquid level gauge are arranged in the lubricating oil tank 1, the heater can be used for preheating the lubricating oil before operation in low-temperature cold regions, and the liquid level gauge can obtain the liquid level of the lubricating oil in the lubricating oil tank 1.

[0036] At the same time, in the embodiment, the cooling device 5 comprises a thermostat 12 communicated with the oil outlet of the overpressure protection device 4, the thermostat 12 is provided with an oil temperature sensor, one outlet of the thermostat 12 is connected with the shunt device 6, and the other outlet is connected with the shunt device 6 through a heat dissipation device 13, the thermostat 12 opens or closes the pipeline to the heat dissipation device 13 according to the change of the oil temperature, changes the circulation range of the cooling medium, so that the temperature of the lubricating oil in the pipeline will not be too high.

[0037] In this embodiment, the plunger pump packing lubrication device 7 is equipped with a throttle valve 14 for adjusting the flow rate of lubricating oil to the plunger pump packing 8, and the plunger pump plunger spray lubrication device 9 is equipped with a throttle valve 14 for adjusting the flow rate of lubricating oil to the plunger pump plunger 10. The plunger pump packing lubrication device 7 can monitor the lubricating oil pressure to the plunger pump packing 8, and the plunger pump plunger lubrication device 9 can monitor the lubricating oil pressure to the plunger pump plunger 10.

[0038] In this embodiment, a waste oil recovery device 15 is also provided to recover lubricating oil from the plunger pump packing lubrication device 7 and the plunger pump plunger lubrication device 9. The waste oil recovery device 15 is connected to the lubricating oil tank 1 and sends the filtered lubricating oil back to the lubricating oil tank 1 by gravity.

[0039] Finally, combining Figure 2 As shown, this embodiment also includes an online control system 16, which is electrically connected to the heater and level gauge in the lubricating oil tank 1. The online control system 16 can automatically control the heater to turn on according to the ambient temperature for preheating, monitor the lubricating oil level in the tank, and issue an alarm when the lubricating oil level is low, reminding the user to add lubricating oil. It is also electrically connected to a hydraulic oil pump installed in the pumping device 3, enabling the adjustment of the pump's start / stop and opening degree. Furthermore, it is electrically connected to an overpressure protection device 4, which determines whether to open the overflow port to send lubricating oil to the lubricating oil tank 1 based on the lubricating oil pressure obtained from the oil pressure sensor. To achieve system pressure balance; electrically connected to cooling device 5, enabling thermostat 12 to open or close the pipeline to heat dissipation device 13 according to oil temperature changes, thereby changing the circulation range of the cooling medium to ensure that the lubricating oil temperature in the pipeline does not overheat; electrically connected to flow divider 6, enabling adjustment of the flow direction of flow divider 6; electrically connected to throttle valve 14 of plunger pump packing lubrication device 7 and plunger pump plunger lubrication device 9, adjusting the opening degree of throttle valve 14 of plunger pump packing lubrication device 7 and plunger pump plunger lubrication device 9; electrically connected to plunger pump, obtaining plunger pump temperature.

[0040] In this embodiment, when the plunger pump is working continuously, the pumping device 3 draws 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. If the oil pressure exceeds the value set by the overpressure protection device 4, some 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 temperature value set by the thermostat 12, the lubricating oil will be cooled by the heat dissipation device 13. The cooled lubricating oil enters the diversion device 6. If the lubricating oil temperature is within the temperature value set by the thermostat 12, the lubricating oil will directly enter the diversion device 6. The diversion device 6 opens the plunger pump packing lubrication device 7 and the plunger pump plunger lubrication device 9, sending the lubricating oil to the plunger pump packing 8 and the plunger pump plunger 10, thereby achieving the purpose of cooling.

[0041] When the plunger pump is intermittently operated, the pumping device 3 draws lubricating oil from the lubricating oil tank 1 and filters the lubricating oil through the oil filtering device 2, and the filtered lubricating oil is pumped to the overpressure protection device 4, at this time, if the oil pressure exceeds the set value of the overpressure protection device 4, part of the lubricating oil will overflow back to the lubricating oil tank 1, so as 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 oil temperature of the lubricating oil exceeds the set temperature value of the thermostat 12, the lubricating oil will be cooled through the heat dissipation device 13, and the cooled lubricating oil enters the shunt device 6, if the oil temperature of the lubricating oil is within the set temperature value of the thermostat 12, the lubricating oil directly enters the shunt device 6, and the shunt device 6 only opens the plunger pump packing lubricating device 7 to send the lubricating oil to the plunger pump packing 8, so as to achieve the purpose of cooling and cooling.

[0042] In the above operation process, 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 is returned to the lubricating oil tank 1 after being filtered by gravity. In this working process, the online control system 16 can monitor the lubricating state of the plunger pump online, real-time control, record storage, playback and automatically generate reports, timely report abnormalities, provide early warning and maintenance suggestions.

[0043] The plunger pump online lubricating device with a spraying function and the use method thereof can adapt to a large working condition range, when the plunger pump is in continuous operation condition, double lubrication of the plunger pump packing lubricating device 7 and the plunger pump plunger lubricating device 9 is adopted, so that the plunger pump can be better lubricated and cooled, and the service life of the plunger and the packing is improved, when the plunger pump is in intermittent operation condition, the heat generation is lower than that in continuous operation condition, at this time, only the plunger pump packing lubricating device 7 can be used for lubrication, so as to reduce the energy consumption of the oil pump and the loss of lubricating oil; the requirements of the plunger pump for wear resistance, cooling, shock absorption and buffering, cleaning and rust and corrosion prevention can be better met; the heating device is provided, so that the extremely cold working condition can be better adapted; through the online control system 16, the labor intensity of the operator can be reduced, and the labor cost is reduced; remote control can be performed, so that the equipment one hundred meters away from the safety area of the well site can be controlled, the safety of equipment operation is greatly improved, and the operation risk is reduced; the states of various components can be monitored online, the pump injection medium temperature, the lubricating oil temperature and oil pressure, the crankshaft stroke can be recorded in real time, the lubricating oil temperature and oil pressure parameters during plunger pump operation can be displayed and monitored, abnormalities can be timely reported, early warning and maintenance suggestions can be provided.

[0044] It should be noted that the above technical solutions are exemplary, and the 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 present disclosure complete and complete, and will fully convey the scope disclosed by the present specification to those skilled in the art. In addition, the technical solutions of the present application are only limited by the scope of the claims.

[0045] The description and claims of the present specification are merely examples, and therefore, the present specification and claims are not limited to the details shown. In the above description, when detailed description of the relevant known functions or configurations is determined to unnecessarily obscure the focus of the present specification and claims, detailed description will be omitted.

[0046] Finally, it should be noted that the above content is a further detailed description of the utility model in combination with the specific implementation, and it cannot be considered that the specific implementation of the utility model is limited to these descriptions. For those skilled in the art to which the present utility model belongs, any simple replacement made without departing from the concept of the present utility model should be considered to belong to the protection scope of the present utility model. The above examples are only more representative examples of the present utility model. Obviously, the present utility model is not limited to the above examples, and there can be many variations. Any simple modification, equivalent change and modification made according to the technical essence of the present utility model to the above examples should be considered to belong to the protection scope of the present utility model.

Claims

1. An online lubrication device for a plunger pump with a spray function, comprising a lubricating oil tank (1), characterized in that: The outlet of the lubricating oil tank (1) is connected to the pumping device (3) through the oil filter device (2). The outlet of the pumping device (3) is connected to the overpressure protection device (4). The oil outlet of the overpressure protection device (4) is connected to the 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 the diverting device (6). One outlet of the diverting device (6) is connected to the plunger pump packing (8) through the plunger pump packing lubrication device (7). The other outlet is connected to the plunger pump plunger (10) through the plunger pump plunger lubrication device (9). The plunger pump plunger lubrication device (9) is connected to the plunger pump plunger (10) through the spray pipe (11).

2. The online lubrication device for a plunger pump with spray function according to claim 1, characterized in that: The lubricating oil tank (1) is equipped with a heater and a level gauge.

3. The online lubrication device for a plunger pump with spray function according to claim 1, characterized in that: The pumping device (3) is equipped with a hydraulic oil pump and a power device that drives the hydraulic oil pump.

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

5. The online lubrication device for a plunger pump with spray function according to claim 1, characterized in that: The cooling device (5) includes a thermostat (12) connected to the oil outlet of the overpressure protection device (4). The thermostat (12) is equipped with an oil temperature sensor. One outlet of the thermostat (12) is connected to the diversion device (6), and the other outlet is connected to the diversion device (6) after passing through the heat dissipation device (13).

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

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

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

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