WO2024061383A1 - 固井设备和控制方法 - Google Patents

固井设备和控制方法 Download PDF

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Publication number
WO2024061383A1
WO2024061383A1 PCT/CN2023/132180 CN2023132180W WO2024061383A1 WO 2024061383 A1 WO2024061383 A1 WO 2024061383A1 CN 2023132180 W CN2023132180 W CN 2023132180W WO 2024061383 A1 WO2024061383 A1 WO 2024061383A1
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WO
WIPO (PCT)
Prior art keywords
lubricating oil
outlet
port
pump
packing
Prior art date
Application number
PCT/CN2023/132180
Other languages
English (en)
French (fr)
Inventor
魏伟
刘永诚
马忠章
郭昭
王俊
Original Assignee
烟台杰瑞石油装备技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 烟台杰瑞石油装备技术有限公司 filed Critical 烟台杰瑞石油装备技术有限公司
Publication of WO2024061383A1 publication Critical patent/WO2024061383A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/14—Combinations of two or more pumps the pumps being of different types at least one pump being of the non-positive-displacement type
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/18—Lubricating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/06—Lubrication
    • F04D29/061—Lubrication especially adapted for liquid pumps

Definitions

  • the present disclosure relates generally to the technical field of cementing equipment, and more specifically to cementing equipment and control methods.
  • the cementing equipment is equipped with a high-pressure plunger pump and a centrifugal pump.
  • the high-pressure plunger pump is used to pressurize the cement slurry and pump the mixed cement slurry between the well wall and the casing to fix the casing.
  • Centrifugal pumps are mainly used for mixing cement slurry in cementing equipment and supplying the mixed cement slurry to high-pressure plunger pumps.
  • packing is used to seal the plunger; similarly, during the operation of a centrifugal pump, the pump The shaft has rotational motion. In order to seal the pump shaft, packing is also used on the pump shaft for sealing.
  • Commonly used packing lubrication systems include air-cap oil packing lubrication systems and electric grease lubrication systems. Due to serious pollution problems, the air-cap oil packing lubrication system has been gradually replaced by electric grease lubrication systems.
  • the current electric grease lubrication system has the problem that the centrifugal pump packing lubrication and the high-pressure plunger pump packing lubrication cannot be independently controlled.
  • the principle is to control the electric grease lubrication system by detecting the displacement of the high-pressure plunger pump. When the high-pressure column is detected When the piston pump has a displacement output, the electric grease lubrication system is started and grease is output to the high-pressure piston pump packing and centrifugal pump packing at the same time.
  • This method of lubrication mainly There are two problems. First, if the centrifugal pump does not work at this time, the grease will also flow to its packing, causing a large amount of accumulation and a large waste of grease; second, if only the centrifugal pump works, the high-pressure plunger pump will Not working, because the displacement output of the high-pressure plunger pump cannot be detected, the electric grease lubrication system does not start at this time, resulting in the centrifugal pump packing not being lubricated, and the centrifugal pump packing may be insufficiently lubricated and burnt.
  • the present disclosure relates to cementing equipment, which includes a centrifugal pump, a plunger pump, and a lubrication system.
  • the lubrication system includes: a lubricating oil pump.
  • the lubricating oil pump includes a first channel, a first lubricating oil outlet connected to the first channel, and a second lubricating oil outlet.
  • a first distribution valve the first distribution valve includes a first inlet, At least one first outlet and a third outlet, the first inlet is connected to at least one first outlet respectively, the first outlet is connected to the packing lubrication end of the centrifugal pump, the first lubricating oil outlet is connected to the first inlet, and the second distribution valve , the second distribution valve includes a second inlet and at least one second outlet, the second inlet is connected to at least one second outlet respectively, the second outlet is connected to the packing lubrication end of the plunger pump, and the second lubricating oil outlet is connected to the second The inlets are connected, or the second lubricating oil outlet is connected with the first inlet, and the second inlet is connected with the third outlet.
  • the cementing equipment of the present disclosure can achieve separate control by setting a first pump head and a second pump head to respectively provide lubricating oil for the centrifugal pump packing and the plunger pump packing.
  • the plunger pump When the plunger pump is running, When the centrifugal pump is on standby, the second pump head operates to provide lubricating oil for the plunger pump packing, while the first pump head is in standby state.
  • the first pump head When the centrifugal pump is running and the plunger pump is on standby, the first pump head operates as the centrifugal pump disc. The first pump head provides lubricating oil, and the second pump head is in standby state, so that there will be no waste of lubricating oil and insufficient lubrication of the centrifugal pump packing or plunger pump packing.
  • the lubricating oil pump further includes an oil tank, the oil tank includes a first oil return port, the cementing equipment further includes a first three-way valve, the first three-way valve includes a first port, a second port and a third port, The first port is connected to the first outlet, the second port is connected to the packing lubrication end of the centrifugal pump, and the third port is connected to the first oil return port, wherein the first three-way valve has a first state and a second state. In the first state, the first port is connected to the second port, and in the second state, the first port is connected to the third port.
  • the oil tank further includes a second oil return port
  • the cementing equipment further includes a second and third oil return port.
  • One-way valve, the second three-way valve includes a fourth port, a fifth port and a sixth port, the fourth port is connected to the second lubricating oil outlet or the third outlet, the fifth port is connected to the second inlet, and the sixth port is connected to the second lubricating oil outlet.
  • the two oil return ports are connected, wherein the second three-way valve has a third state and a fourth state. In the third state, the fourth port is connected to the fifth port, and in the fourth state, the fourth port is connected to the sixth port. Connected.
  • the centrifugal pumps include multiple first inlets, the centrifugal pumps correspond to the first inlets one-to-one, and each first inlet is connected to the packing lubrication end of each centrifugal pump.
  • the first distribution valve further includes at least two third outlets
  • the second distribution valve includes at least two
  • the plunger pump includes at least two
  • the third outlets the second distribution valve
  • the plunger pump is connected to a second entrance.
  • a first sensor is provided on the centrifugal pump, and a second sensor is provided on the plunger pump.
  • the cementing equipment also includes an electronic control unit, and both the first sensor and the second sensor are electrically connected to the electronic control unit. .
  • a relief valve and a pressure switch are provided at both the first lubricating oil outlet and the second lubricating oil outlet, and/or a pipeline connecting the first outlet to the packing lubrication end of the centrifugal pump is provided with One-way valve.
  • the packing lubrication end of the plunger pump includes a plurality of lubrication points
  • the third outlet includes a plurality of lubrication points
  • the lubrication points correspond to the third outlets one-to-one
  • the lubrication points are connected with the third outlet.
  • the present disclosure relates to a control method for controlling the cementing equipment of the present disclosure.
  • the control method includes: detecting whether the centrifugal pump is running; and controlling the first lubricating oil outlet of the lubricating oil pump to conduct when the centrifugal pump is in a running state.
  • the first three-way valve when the centrifugal pump is in the stopped operation state, the first three-way valve is controlled in the second state; when the plunger pump is in the stopped operation state, the second three-way valve is controlled in the fourth state.
  • Figure 1 is a schematic diagram when the first three-way valve of the cementing equipment is an electromagnetic three-way valve according to Embodiment 1 of the present disclosure
  • Figure 2 is a schematic diagram of the first three-way valve of the cementing equipment according to Embodiment 1 of the present disclosure when it is a hydraulically controlled directional valve;
  • Figure 3 is a schematic diagram when the first three-way valve of the cementing equipment is an electromagnetic three-way valve according to Embodiment 2 of the present disclosure
  • FIG. 4 is a schematic diagram of a cementing device according to a second embodiment of the present disclosure when the first three-way valve is a hydraulically controlled reversing valve;
  • Figure 5 is a schematic flowchart of a control method according to an embodiment of the present disclosure.
  • Lubrication system 100 lubricating oil pump 101, first pump head 1, second pump head 2, pressure switch 3, overflow valve 4, first distributing valve 5, second distributor 6, check valve 7, first three-way valve 8, solenoid three-way valve 81, hydraulically controlled reversing valve 82, second three-way valve 9, first sensor 10, second sensor 11, control unit 12, plunger pump 13, lubrication point 132, centrifugal pump 14, first centrifugal pump 142, second centrifugal pump 144, oil tank 15.
  • Packing also called filler
  • Packing is usually woven from softer threads, and is filled in the sealing cavity with strip fillers with a square cross-sectional area to achieve sealing and prevent liquid leakage.
  • the cementing equipment includes a centrifugal pump 14 and a plunger pump 13 and a lubrication system 100.
  • the lubrication system 100 includes: a lubricating oil pump 101 and a first distribution valve. 5 and the second distribution valve 6.
  • lubrication oil pump 101 includes a first passage, a A first lubricating oil outlet, a second channel, and a second lubricating oil outlet connected to the second channel.
  • the first channel is provided with a first pump head 1, and the second channel is provided with a second pump head 2;
  • a first distribution valve 5 includes a first inlet, at least one first outlet and a third outlet.
  • the first inlet is connected to at least one first outlet respectively.
  • the first outlet is connected to the packing lubrication end of the centrifugal pump 14.
  • the first lubricating oil outlet is connected to the first
  • the second distribution valve 6 includes a second inlet and at least one second outlet.
  • the second inlet is connected with at least one second outlet respectively.
  • the second outlet is connected with the packing lubrication end of the plunger pump 13.
  • the second lubricating oil The outlet is connected to the second inlet, or the second lubricating oil outlet is connected to the first inlet, and the second inlet is connected to the third outlet.
  • the lubricating oil pump 101 is used to deliver lubricating oil to the lubrication system 100.
  • the function of the first distribution valve 5 is to proportionally distribute the lubricating oil flowing in from the first inlet to the first outlet and the third outlet that need to output lubricating oil.
  • Three outlets, the function of the second distribution valve 6 is to distribute the lubricating oil flowing in from the second inlet to the second outlet that needs to output lubricating oil in proportion, thereby realizing the control of the output flow.
  • Each outlet (the first outlet, the second outlet) The outlet and the third outlet) correspond to a branch flow, and the lubricating oil of each branch flow can be supplied to one or more lubrication points.
  • the first pump head 1 provides power for lubricating oil output to the first lubricating oil outlet.
  • the centrifugal pump 14 When the centrifugal pump 14 is running, the lubricating oil flows to the first distribution valve 5 via the first lubricating oil outlet, and passes through the first lubricating oil outlet.
  • the inlet flows into the first distribution valve 5, and after distribution flows out of the first distribution valve 5 through the first outlet, flowing into the packing lubrication end of the centrifugal pump 14, thereby lubricating the packing of the centrifugal pump 14.
  • the second pump head 2 provides the power for lubricating oil output to the second lubricating oil outlet.
  • the lubricating oil flows to the second distribution valve 6 through the second lubricating oil outlet. It flows into the second distribution valve 6 through the second inlet, flows out of the second distribution valve 6 through the second outlet after distribution, and flows into the packing lubrication end of the plunger pump 13, thereby lubricating the packing of the plunger pump 13.
  • the combined flow of lubricating oil output from the first lubricating oil outlet and the second lubricating oil outlet flows into the first distribution valve 5 through the first inlet.
  • the lubricating oil flow rate of a distribution valve 5 is adapted to the lubricating use of the centrifugal pump 14. After distribution, it flows out of the first distribution valve 5 through the first outlet and flows into the packing lubrication end of the centrifugal pump 14, thereby lubrication for the packing of the centrifugal pump 14.
  • Lubrication when the plunger pump 13 is running, the lubricating oil flow input to the second distribution valve 6 is controlled to adapt to the lubrication use of the plunger pump 13. After distribution, it flows out of the first distribution valve 5 through the third outlet and flows into the second distribution valve. 6, flows into the packing lubrication end of the plunger pump 13 through the second outlet, thereby lubricating the packing of the plunger pump 13; when the centrifugal pump 14 and the plunger pump 13 are running at the same time, the control The lubricating oil flow rate input to the first distribution valve 5 is adapted to the lubrication of the centrifugal pump 14 and the lubrication of the plunger pump 13.
  • the distribution valves include, but are not limited to, damping distributors, volumetric distributors, quantitative pressurized distributors, progressive distributors, and Adjustable flow distributor.
  • the distribution valves are progressive distributors.
  • the lubricating oil flow required for the plunger pump 13 packing is usually larger, the centrifugal pump 14 packing requires a smaller flow of lubricating oil, and the amount of oil pumped out by the first pump head 1 and the second pump head 2 can be controlled respectively to meet the respective lubrication of the plunger pump 13 and the centrifugal pump 14 According to the oil quantity requirement, when the plunger pump 13 is running and the centrifugal pump 14 is on standby, the second pump head 2 is running to provide lubricating oil for the packing of the plunger pump 13, while the first pump head 1 is in standby mode.
  • the first pump head 1 When the centrifugal pump 14 is running and the When the plunger pump 13 is on standby, the first pump head 1 operates to provide lubricating oil for the packing of the centrifugal pump 14, and the second pump head 2 is in a standby state, so that there will be no waste of lubricating oil, and no damage to the packing or packing of the centrifugal pump 14.
  • the plunger pump 13 packing is insufficiently lubricated.
  • a relief valve 4 and a pressure switch 3 are provided at both the first lubricating oil outlet and the second lubricating oil outlet. That is to say, a relief valve 4 and a pressure switch 3 are provided at the first lubricating oil outlet, and a relief valve 4 and a pressure switch 3 are also provided at the second lubricating oil outlet.
  • the relief valve 4 can prevent the lubricating oil from being diverted in the lubrication system 100, that is, the lubricating oil flows from the first lubricating oil outlet into the lubricating oil pump 101, or the lubricating oil flows from the second lubricating oil outlet into the lubricating oil pump 101.
  • the lubricating oil pump 101 plays a protective role.
  • the pressure switch 3 can ensure that when the pressure at the first lubricating oil outlet and the second lubricating oil outlet reaches the set pressure, the lubricating oil pump 101 is controlled to stop running, thereby protecting the lubricating oil pump 101.
  • both the first lubricating oil outlet and the second lubricating oil when both the first lubricating oil outlet and the second lubricating oil are connected to the first inlet, they can share one relief valve 4.
  • a one-way valve 7 is provided on the pipeline connecting the first outlet to the packing lubrication end of the centrifugal pump 14, which can prevent the lubricating oil from flowing back.
  • the packing lubrication end of the plunger pump 13 includes a plurality of lubrication points 132, and the third outlet includes a plurality of lubrication points 132 corresponding to the third outlet.
  • the lubrication point 132 is connected to the third outlet. Since the packing of the plunger pump 13 requires a large amount of lubricating oil, multiple lubrication points 132 can be provided so that the packing of the plunger pump 13 can be fully lubricated.
  • the centrifugal pumps 14 include multiple first inlets, and the centrifugal pumps 14 correspond to the first inlets one-to-one, and each first inlet is connected to each of the first inlets.
  • the packing lubrication end of the centrifugal pump 14 is connected.
  • the first distribution valve 5 also includes at least two third outlets
  • the second distribution valve 6 includes at least two
  • the plunger pump 13 includes at least two.
  • the three outlets, the second distribution valve 6 and the plunger pump 13 correspond one to one, and each third outlet is connected to a second inlet.
  • the centrifugal pump 14 is provided with a first sensor 10
  • the plunger pump 13 is provided with a second sensor 11
  • the cementing equipment also includes an electronic control unit 12.
  • the first sensor 10 and the second sensor 11 are both electrically connected to the electronic control unit 12 .
  • the first sensor 10 is used to detect whether the centrifugal pump 14 is in a running state
  • the second sensor 11 is used to detect whether the plunger pump 13 is in a running state.
  • the cementing equipment includes a plunger pump 13, two centrifugal pumps 14 and two first sensors 10.
  • Each centrifugal pump 14 is provided with a first sensor 10, and the two centrifugal pumps 14 includes a first centrifugal pump 142 and a second centrifugal pump 144.
  • the first lubricating oil outlet is connected to the first inlet
  • the second lubricating oil outlet is connected to the second inlet
  • the first three-way valve 8 corresponds to the centrifugal pump 14 one by one.
  • the lubricating oil pump 101 further includes an oil tank 15.
  • the first lubricating oil outlet and the second lubricating oil outlet are both connected to the oil tank 15.
  • the oil tank 15 includes a first oil return port
  • the cementing equipment further includes a first tee.
  • Valve 8 the first three-way valve 8 includes a first port, a second port and a third port. The first port is connected to the first outlet, the second port is connected to the packing lubrication end of the centrifugal pump 14, and the third port is connected to the first port.
  • An oil return port is connected, in which the first three-way valve 8 has a first state and a second state.
  • each centrifugal pump 14 corresponds to a first three-way valve 8 , thereby achieving independent control of the lubrication of each centrifugal pump 14 .
  • the centrifugal pump 14 can When lubricating oil is not needed, the lubricating oil can flow back to the oil tank 15 without causing accumulation and waste.
  • centrifugal pumps 14 when there are multiple centrifugal pumps 14, some of the centrifugal pumps 14 need lubrication, and some of the centrifugal pumps 14 do not need lubrication, so that the centrifugal pumps 14 that need lubrication can be lubricated, and the centrifugal pumps 14 that do not need lubrication can be lubricated on the corresponding branch.
  • the lubricating oil can flow back to the oil tank 15 without causing waste accumulation.
  • the first three-way valve 8 is an electromagnetic three-way valve 81.
  • the first sensor 10 detects that the rotation speed of the centrifugal pump 14 is 0, it is recognized that the centrifugal pump 14 is not running, and the first three-way valve 8 enters In the second state, the lubricating oil output from the first lubricating oil outlet flows back to the oil tank 15 through the first distribution valve 5, the first three-way valve 8 and the first oil return port.
  • the first sensor 10 detects centrifugal The rotation speed of the pump 14 is not 0, and it is recognized that the centrifugal pump 14 is in the running state.
  • the first three-way valve 8 enters the first state, and the first port and the second port are connected.
  • the first distribution valve 5 , the first three-way valve 8 and the packing lubrication end of the centrifugal pump 14 are used to lubricate the centrifugal pump 14 .
  • the first three-way valve 8 is a hydraulically controlled reversing valve 82.
  • the hydraulic control port of the hydraulically controlled reversing valve 82 has no oil pressure, and the hydraulically controlled reversing valve 82 is in the spring.
  • the first port and the third port are moved and connected under the action of When the centrifugal pump 14 is running, the oil pressure is transmitted to the hydraulic control port of the hydraulic control valve 82.
  • the hydraulic control valve 82 conducts the first port and the second port, and the first lubricating oil outlet
  • the output lubricating oil passes through the first distribution valve 5 , the first three-way valve 8 and the packing lubrication end of the centrifugal pump 14 in sequence, thereby lubricating the centrifugal pump 14 .
  • the oil tank 15 also includes a second oil return port
  • the cementing equipment further includes a second three-way valve 9.
  • the second three-way valve 9 includes a fourth port, a fifth port, and a sixth port.
  • the fourth The port is connected to the second lubricating oil outlet or the third outlet
  • the fifth port is connected to the second inlet
  • the sixth port is connected to the second oil return port, where the second three-way valve 9 has a third state and a fourth state, In the third state, the fourth port is connected to the fifth port, and in the fourth state, the fourth port is connected to the sixth port.
  • the second sensor 11 detects that the output displacement of the plunger pump 13 is 0, it is recognized that the plunger pump 13 is not running.
  • the second three-way valve 9 is in the fourth state.
  • the second three-way valve 9 is in the fourth state.
  • the lubricating oil output from the lubricating oil outlet flows back to the oil tank 15 through the first three-way valve 8 and the first oil return port in sequence; when it is detected that the plunger pump 13 has a displacement output, it is recognized that the plunger pump 13 is running.
  • the second three-way valve 9 enters the third state, and the fourth port and the fifth port are connected.
  • the second lubricating oil outlet outputs The lubricating oil passes through the second three-way valve 9, the second distribution valve 6 and the packing lubrication end of the plunger pump 13 in sequence, thereby lubricating the plunger pump 13.
  • the cementing equipment includes two plunger pumps 13 and at least one centrifugal pump 14.
  • the first lubricating oil outlet and the second lubricating oil outlet are both connected to the first inlet, and the plunger pump 13 is connected to the first lubricating oil outlet.
  • the two and three-way valves 9 are in one-to-one correspondence.
  • the fourth port of the second three-way valve 9 is connected to the third outlet, the fifth port is connected to the second inlet, and the sixth port is connected to the second oil return port.
  • the second and third ports are connected to the second oil return port.
  • the valve 9 has a third state and a fourth state. In the third state, the fourth port is connected to the fifth port, and in the fourth state, the fourth port is connected to the sixth port.
  • the first three-way valve 8 is an electromagnetic three-way valve 81.
  • the electromagnetic three-way valve 81 enters In the first state, the first port and the second port are connected.
  • the lubricating oil output by the lubricating oil pump 101 passes through the first distribution valve 5 , the electromagnetic three-way valve 81 and the packing lubrication end of the centrifugal pump 14 in sequence, thereby providing the centrifugal pump 14 Carry out lubrication; when the first sensor 10 detects that the rotation speed of the centrifugal pump 14 is 0, it is recognized that the centrifugal pump 14 is not running, and the electromagnetic three-way valve 81 enters the second state. At this time, the lubricating oil output from the first lubricating oil outlet passes through The first distribution valve 5 , the solenoid three-way valve 81 and the first oil return port flow back into the oil tank 15 .
  • the first three-way valve 8 is a hydraulic control reversing valve 82.
  • the centrifugal pump 14 When the centrifugal pump 14 is running, the oil pressure is transmitted to the hydraulic control port of the hydraulic control reversing valve 82. At this time, the hydraulic control reversing valve 82 is used. The valve 82 enters the first state, and the first port and the second port are connected. At this time, the lubricating oil output by the lubricating oil pump 101 passes through the first distribution valve 5, the first three-way valve 8 and the packing lubrication end of the centrifugal pump 14 in sequence.
  • the centrifugal pump 14 is lubricated; when the centrifugal pump 14 is not running, the hydraulic control port of the hydraulic control reversing valve 82 has no oil pressure, and the hydraulic control reversing valve 82 moves under the action of the spring to connect the first port and the third port. port, the hydraulic control reversing valve 82 enters the second state. At this time, the lubricating oil output from the first lubricating oil outlet flows back to the oil tank 15 through the first distribution valve 5, the hydraulic control reversing valve 82 and the first oil return port. .
  • the second three-way valve 9 When the plunger pump 13 is in operation, the second three-way valve 9 is in the third state, and the fourth port is connected to the fifth port. At this time, the lubricating oil output by the lubricating oil pump 101 passes through the first distribution valve 5, the second three-way valve 9, the second distribution valve 6 and the packing lubrication end of the plunger pump 13 in sequence, thereby lubricating the plunger pump 13; when the plunger pump 13 is in a stopped state, the second three-way valve 9 is in the fourth state, The fourth port is connected to the sixth port, and the lubricating oil output by the lubricating oil pump 101 flows back to the oil tank 15 via the first distribution valve 5, the second three-way valve 9 and the second oil return port in sequence.
  • control method of the present disclosure is used to control the above-mentioned cementing equipment.
  • the control method includes:
  • Step S1 Detect whether the centrifugal pump 14 is running
  • Step S2 When the centrifugal pump 14 is in the running state, control the first lubricating oil outlet of the lubricating oil pump 101 to provide lubricating oil for the packing lubrication end of the centrifugal pump 14, and control the first three-way valve 8 to be in the first state;
  • Step S3 Detect whether the plunger pump 13 is running
  • Step S4 When the plunger pump 13 is in the running state, control the second lubricating oil outlet of the lubricating oil pump 101 to provide lubricating oil for the packing lubrication end of the plunger pump 13, and control the second three-way valve 9 to be in the third state. .
  • step S1 and step S3 are not in order, and the order can be adjusted.
  • the lubricating oil flow required for the plunger pump 13 packing is usually larger, the centrifugal pump 14 packing requires a smaller flow of lubricating oil, and the amount of oil pumped out by the first pump head 1 and the second pump head 2 can be controlled respectively to meet the respective lubrication of the plunger pump 13 and the centrifugal pump 14 According to the oil quantity requirement, when the plunger pump 13 is running and the centrifugal pump 14 is on standby, the second pump head 2 is running to provide lubricating oil for the packing of the plunger pump 13, while the first pump head 1 is in standby mode.
  • the first pump head 1 When the centrifugal pump 14 is running and the When the plunger pump 13 is on standby, the first pump head 1 operates to provide lubricating oil for the packing of the centrifugal pump 14, and the second pump head 2 is in a standby state, so that there will be no waste of lubricating oil, and no damage to the packing or packing of the centrifugal pump 14.
  • the plunger pump 13 packing is insufficiently lubricated.
  • the first three-way valve 8 when the centrifugal pump 14 is in the stopped operation state, the first three-way valve 8 is controlled to be in the second state; when the plunger pump 13 is in the stopped operation state, the second three-way valve 9 is controlled in the fourth state. .
  • the control method of the present disclosure can allow the lubricating oil to flow back to the oil tank 15 when the centrifugal pump 14 does not need lubricating oil, without causing accumulation and waste.
  • some of the centrifugal pumps 14 need lubrication, and some of the centrifugal pumps 14 do not need lubrication, so that the centrifugal pumps 14 that need lubrication can be lubricated, and the centrifugal pumps 14 that do not need lubrication can be lubricated on the corresponding branch.
  • Lubricating oil can Flows back to the fuel tank 15 without causing waste accumulation.
  • connection should be understood in a broad sense.
  • connection or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.
  • connection or integral connection
  • connection, or integral connection can be a mechanical connection or an electrical connection
  • it can be a direct connection or an indirect connection through an intermediate medium
  • it can be an internal connection between two components.
  • specific meanings of the above terms in this disclosure can be understood on a case-by-case basis.

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Abstract

固井设备及控制方法，该固井设备包括离心泵和柱塞泵以及润滑系统，润滑系统包括：润滑油泵，润滑油泵包括第一通道、与第一通道连通的第一润滑油出口、第二通道以及与第二通道连通的第二润滑油出口，第一通道内设有第一泵头，第二通道内设有第二泵头；第一分配阀，第一分配阀包括第一入口、至少一个第一出口和第三出口，第一入口分别和至少一个第一出口连通，第一出口与离心泵的盘根润滑端连通，第一润滑油出口与第一入口连通，第二分配阀，第二分配阀包括第二入口和至少一个第二出口，第二入口分别和至少一个第二出口连通，第二出口与柱塞泵的盘根润滑端连通，第二润滑油出口与第二入口连通，或第二润滑油出口与第一入口连通，第二入口与第三出口连通。该固井设备可以实现分别控制为柱塞泵盘根提供润滑油或为离心泵盘根提供润滑油，如此既不会浪费润滑油，也不会对离心泵盘根或者柱塞泵盘根润滑不足。

Description

固井设备和控制方法
相关申请的引用
本公开要求于2022年9月19日向中华人民共和国国家知识产权局提交的申请号为202211138952.0、发明名称为“固井设备和控制方法”的中国发明专利申请的全部权益，并通过引用的方式将其全部内容并入本公开。
领域
本公开大体上涉及固井设备技术领域，更具体地涉及固井设备和控制方法。
背景
固井设备配备有高压柱塞泵和离心泵，高压柱塞泵用于对水泥浆进行加压泵送，将混好的水泥浆泵送到井壁和套管之间，将套管进行固定；离心泵主要用于固井设备水泥浆的混合，以及将混好的水泥浆供给高压柱塞泵。高压柱塞泵在作业过程中由于柱塞存在往复运动，为了对柱塞进行密封，防止高压泥浆流出，会在柱塞上使用盘根对柱塞进行密封；同样，离心泵在作业过程中泵轴存在旋转运动，为了对泵轴进行密封，也会在泵轴上使用盘根进行密封。
以上对高压柱塞和离心泵的盘根密封，由于作业时的往复和旋转运动，就会存在柱塞与盘根及泵轴与盘根之间的摩擦，一方面会产生热量，另一方面也会导致盘根磨损，减少使用寿命，因此为了减少摩擦，并带走热量，需要对二者的盘根密封提供润滑。
常用的盘根润滑系统有气顶油盘根润滑系统和电动脂润滑系统两种，气顶油盘根润滑系统由于存在污染严重的问题，目前已逐步被电动脂润滑系统取代。目前的电动脂润滑系统存在离心泵盘根润滑和高压柱塞泵盘根润滑无法独立控制的问题，其原理是通过检测高压柱塞泵排量对电动脂润滑系统进行控制，当检测到高压柱塞泵有排量输出时，即启动电动脂润滑系统，同时输出润滑脂到高压柱塞泵盘根和离心泵盘根。这种润滑方式主 要存在两个问题，一、如果此时离心泵不工作，润滑脂也会流到其盘根处，造成大量堆积，产生润滑脂的大量浪费；二、如果只有离心泵工作，高压柱塞泵不工作，由于检测不到高压柱塞泵的排量输出，此时电动脂润滑系统不启动，导致离心泵盘根得不到润滑，会出现离心泵盘根润滑不足烧盘根的情况。
概述
一方面，本公开涉及固井设备，其包括离心泵和柱塞泵以及润滑系统，润滑系统包括：润滑油泵，润滑油泵包括第一通道、与第一通道连通的第一润滑油出口、第二通道以及与第二通道连通的第二润滑油出口，第一通道内设有第一泵头，第二通道内设有第二泵头；第一分配阀，第一分配阀包括第一入口、至少一个第一出口和第三出口，第一入口分别和至少一个第一出口连通，第一出口与离心泵的盘根润滑端连通，第一润滑油出口与第一入口连通，第二分配阀，第二分配阀包括第二入口和至少一个第二出口，第二入口分别和至少一个第二出口连通，第二出口与柱塞泵的盘根润滑端连通，第二润滑油出口与第二入口连通，或第二润滑油出口与第一入口连通，第二入口与第三出口连通。
在某些实施方案中，本公开的固井设备通过设置第一泵头和第二泵头分别为离心泵盘根和柱塞泵盘根提供润滑油，可以实现分别控制，在柱塞泵运行而离心泵待机时，第二泵头运行为柱塞泵盘根提供润滑油，而第一泵头处于待机状态，在离心泵运行而柱塞泵待机时，第一泵头运行为离心泵盘根提供润滑油，第二泵头处于待机状态，如此既不会浪费润滑油，也不会对离心泵盘根或者柱塞泵盘根润滑不足。
在某些实施方案中，润滑油泵还包括油箱，油箱包括第一回油口，固井设备还包括第一三通阀，第一三通阀包括第一端口、第二端口和第三端口，第一端口与第一出口连通，第二端口与离心泵的盘根润滑端连通，第三端口与第一回油口连通，其中，第一三通阀具有第一状态和第二状态，在第一状态时，第一端口与第二端口连通，在第二状态时，第一端口与第三端口连通。
在某些实施方案中，油箱还包括第二回油口，固井设备还包括第二三 通阀，第二三通阀包括第四端口、第五端口和第六端口，第四端口与第二润滑油出口或第三出口连通，第五端口与第二入口连通，第六端口与第二回油口连通，其中，第二三通阀具有第三状态和第四状态，在第三状态时，第四端口与第五端口连通，在第四状态时，第四端口与第六端口连通。
在某些实施方案中，离心泵包括多个，第一入口包括多个，离心泵与第一入口一一对应，每个第一入口均与每个离心泵的盘根润滑端连通。
在某些实施方案中，第一分配阀还包括至少两个第三出口，第二分配阀包括至少两个，柱塞泵包括至少两个，第三出口、第二分配阀以及柱塞泵一一对应，每个第三出口与一个第二入口连通。
在某些实施方案中，离心泵上设有第一传感器，柱塞泵上设有第二传感器，固井设备还包括电控单元，第一传感器和第二传感器均与电控单元电性连接。
在某些实施方案中，第一润滑油出口处和第二润滑油出口处均设有溢流阀和压力开关，和/或第一出口与离心泵的盘根润滑端连通的管路上设有单向阀。
在某些实施方案中，柱塞泵的盘根润滑端包括多个润滑点，第三出口包括多个，润滑点与第三出口一一对应，润滑点与第三出口连通。
另一方面，本公开涉及控制方法，用于控制本公开的固井设备，该控制方法包括：检测离心泵是否运行；在离心泵处于运行状态时，控制润滑油泵的第一润滑油出口导通为离心泵的盘根润滑端提供润滑油；检测柱塞泵是否运行；在柱塞泵处于运行状态时，控制润滑油泵的第二润滑油出口导通为柱塞泵的盘根润滑端提供润滑油。
在某些实施方案中，在离心泵处于停止运行状态时，控制第一三通阀处于第二状态；在柱塞泵处于停止运行时，控制第二三通阀处于第四状态。
附图简要说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
为了更清楚地说明本公开实施例的技术方案，下面将对实施例所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言， 在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为根据本公开实施例一的固井设备的第一三通阀为电磁三通阀时的示意图；
图2为根据本公开实施例一的固井设备的第一三通阀为液控换向阀时的示意图；
图3为根据本公开实施例二的固井设备的第一三通阀为电磁三通阀时的示意图；
图4为根据本公开实施例二的固井设备的第一三通阀为液控换向阀时的示意图；以及
图5为根据本公开实施例的控制方法的流程示意图。
附图标记：
润滑系统100，润滑油泵101，第一泵头1，第二泵头2，压力开关3，溢流阀4，第一分配阀5，第二分配器6，单向阀7，第一三通阀8，电磁三通阀81，液控换向阀82，第二三通阀9，第一传感器10，第二传感器11，控制单元12，柱塞泵13，润滑点132，离心泵14，第一离心泵142，第二离心泵144，油箱15。
详述
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
关于本公开的名词解释：盘根，也叫填料，通常由较柔软的线状物编织而成，通过截面积是正方形的条状填充物填充在密封腔体内，从而实现密封，防止液体泄漏。
如图1和图3所示，根据本公开一实施例的固井设备，固井设备包括离心泵14和柱塞泵13以及润滑系统100，润滑系统100包括：润滑油泵101、第一分配阀5以及第二分配阀6。
在某些实施方案中，润滑油泵101包括第一通道、与第一通道连通的 第一润滑油出口、第二通道以及与第二通道连通的第二润滑油出口，第一通道内设有第一泵头1，第二通道内设有第二泵头2；第一分配阀5包括第一入口、至少一个第一出口和第三出口，第一入口分别和至少一个第一出口连通，第一出口与离心泵14的盘根润滑端连通，第一润滑油出口与第一入口连通，第二分配阀6包括第二入口和至少一个第二出口，第二入口分别和至少一个第二出口连通，第二出口与柱塞泵13的盘根润滑端连通，第二润滑油出口与第二入口连通，或第二润滑油出口与第一入口连通，第二入口与第三出口连通。
在某些实施方案中，润滑油泵101用于为润滑系统100输送润滑油，第一分配阀5的作用是将第一入口流入的润滑油按照比例分配到需要输出润滑油的第一出口和第三出口，第二分配阀6的作用是将第二入口流入的润滑油按照比例分配到需要输出润滑油的第二出口，从而实现对输出流量的控制，每个出口(第一出口、第二出口以及第三出口)对应一个支流，每个支流的润滑油可以供应给一个或多个润滑点。
在某些实施方案中，第一泵头1为第一润滑油出口提供润滑油输出的动力，在离心泵14运行时，润滑油经由第一润滑油出口流向第一分配阀5，经由第一入口流入第一分配阀5，经过分配后经由第一出口流出第一分配阀5，流入到离心泵14的盘根润滑端，从而为离心泵14的盘根进行润滑。
如图1和图2所示，第二泵头2为第二润滑油出口提供润滑油输出的动力，在柱塞泵13运行时，润滑油经由第二润滑油出口流向第二分配阀6，经由第二入口流入第二分配阀6中，经过分配后经由第二出口流出第二分配阀6，流入到柱塞泵13的盘根润滑端，从而为柱塞泵13的盘根进行润滑。
如图3和图4所示，还可以是第一润滑油出口和第二润滑油出口输出的润滑油合流共同经由第一入口流入第一分配阀5，在离心泵14运行时，控制输入第一分配阀5的润滑油流量适配离心泵14润滑使用，经过分配后经由第一出口流出第一分配阀5，流入到离心泵14的盘根润滑端，从而为离心泵14的盘根进行润滑；在柱塞泵13运行时，控制输入第二分配阀6的润滑油流量适配柱塞泵13润滑使用，经过分配后经由第三出口流出第一分配阀5，流入到第二分配阀6中，经由第二出口流入到柱塞泵13的盘根润滑端，从而为柱塞泵13的盘根进行润滑；在离心泵14和柱塞泵13同时运行时，控 制输入第一分配阀5的润滑油流量适配离心泵14润滑和柱塞泵13润滑使用，经过分配后经由第一出口和第三出口流出第一分配阀5，经由第一出口流出的润滑油流向离心泵14的盘根润滑端，从而为离心泵14的盘根进行润滑，经由第三出口流出的润滑油流向柱塞泵13的盘根润滑端，从而为柱塞泵13的盘根进行润滑。
在某些实施方案中，分配阀(第一分配阀5和第二分配阀6)包括但不限于是阻尼式分配器、容积式分配器、定量加压式分配器、递进式分配器以及可调节流式分配器。如附图中所示出的实施例中分配阀(第一分配阀5和第二分配阀6)为递进式分配器。
在某些实施方案中，通过设置第一泵头1和第二泵头2分别为离心泵14盘根和柱塞泵13盘根提供润滑油，通常柱塞泵13盘根需要的润滑油流量较大，离心泵14盘根需要的润滑油流量较小，可以实现分别控制第一泵头1和第二泵头2泵出的油量，来满足柱塞泵13和离心泵14各自的润滑油量需求，在柱塞泵13运行而离心泵14待机时，第二泵头2运行为柱塞泵13盘根提供润滑油，而第一泵头1处于待机状态，在离心泵14运行而柱塞泵13待机时，第一泵头1运行为离心泵14盘根提供润滑油，第二泵头2处于待机状态，如此既不会浪费润滑油，也不会对离心泵14盘根或者柱塞泵13盘根润滑不足。
如图1和图2所示，在某些实施方案中，第一润滑油出口处和第二润滑油出口处均设有溢流阀4和压力开关3。也就是说，第一润滑油出口处设有溢流阀4和压力开关3，第二润滑油出口处也设有溢流阀4和压力开关3。其中，溢流阀4可以防止润滑油在润滑系统100中导流，即润滑油从第一润滑油出口流入润滑油泵101中，或者是润滑油从第二润滑油出口流入润滑油泵101中，对润滑油泵101起到保护的作用。压力开关3可以保障第一润滑油出口和第二润滑油出口处的压力达到设定压力时，控制润滑油泵101停止运行，对润滑油泵101起到保护作用。
如图3和图4所示，在某些实施方案中，第一润滑油出口和第二润滑油均与第一入口连通时，共用一个溢流阀4即可。
在某些实施方案中，第一出口与离心泵14的盘根润滑端连通的管路上设有单向阀7，如此能够防止润滑油倒流。
如图1和图3所示，在某些实施方案中，柱塞泵13的盘根润滑端包括多个润滑点132，第三出口包括多个，润滑点132与第三出口一一对应，润滑点132与第三出口连通，由于柱塞泵13的盘根需要的润滑油量较多，设置多个润滑点132，可以使得柱塞泵13的盘根得到充分的润滑。
如图1和图3所示，在某些实施方案中，离心泵14包括多个，第一入口包括多个，离心泵14与第一入口一一对应，每个第一入口均与每个离心泵14的盘根润滑端连通。
如图3和图4所示，在某些实施方案中，第一分配阀5还包括至少两个第三出口，第二分配阀6包括至少两个，柱塞泵13包括至少两个，第三出口、第二分配阀6以及柱塞泵13一一对应，每个第三出口与一个第二入口连通。
如图1和图3所示，在某些实施方案中，离心泵14上设有第一传感器10，柱塞泵13上设有第二传感器11，固井设备还包括电控单元12，第一传感器10和第二传感器11均与电控单元12电性连接。其中，第一传感器10用于检测离心泵14是否处于运行状态，第二传感器11用于检测柱塞泵13是否处于运行状态。
实施例一
如图1和图2所示，固井设备包括一个柱塞泵13、两个离心泵14以及两个第一传感器10，每个离心泵14上均设有第一传感器10，两个离心泵14包括第一离心泵142和第二离心泵144，第一润滑油出口与第一入口连通，第二润滑油出口与第二入口连通，第一三通阀8与离心泵14一一对应。
在某些实施方案中，润滑油泵101还包括油箱15，第一润滑油出口和第二润滑油出口均与油箱15连通，油箱15包括第一回油口，固井设备还包括第一三通阀8，第一三通阀8包括第一端口、第二端口和第三端口，第一端口与第一出口连通，第二端口与离心泵14的盘根润滑端连通，第三端口与第一回油口连通，其中，第一三通阀8具有第一状态和第二状态，在第一状态时，第一端口与第二端口连通，在第二状态时，第一端口与第三端口连通。在离心泵14包括多个时，每个离心泵14均对应一个第一三通阀8，从而实现对每个离心泵14的润滑的独立控制。如此设置，能够在离心泵14 不需要润滑油润滑时，使得润滑油可以流回到油箱15，不会导致堆积浪费。尤其是在离心泵14包括多个时，部分离心泵14需要润滑，部分离心泵14不需要时，能够使得需要润滑的离心泵14可以得到润滑，不需要润滑的离心泵14对应的支路上的润滑油可以流回到油箱15，不会导致堆积浪费。
如图1所示，第一三通阀8为电磁三通阀81，在第一传感器10检测到离心泵14的转速为0时，识别为离心泵14不运行，第一三通阀8进入第二状态，此时第一润滑油出口输出的润滑油依次经由第一分配阀5、第一三通阀8以及第一回油口流回到油箱15中，当第一传感器10检测到离心泵14的转速不为0，识别为离心泵14处于运行状态，第一三通阀8进入第一状态，第一端口与第二端口连通，此时第一润滑油出口输出的润滑油依次经由第一分配阀5、第一三通阀8以及离心泵14的盘根润滑端，从而为离心泵14进行润滑。
如图2所示，第一三通阀8为液控换向阀82，当离心泵14不运转时，液控换向阀82的液控口没有油压，液控换向阀82在弹簧的作用下移动导通第一端口和第三端口，此时第一润滑油出口输出的润滑油依次经由第一分配阀5、第一三通阀8以及第一回油口流回到油箱15中；当离心泵14在运行时，此时油压传递给液控换向阀82的液控口，此时液控换向阀82导通第一端口和第二端口，第一润滑油出口输出的润滑油依次经由第一分配阀5、第一三通阀8以及离心泵14的盘根润滑端，从而为离心泵14进行润滑。
在某些实施方案中，油箱15还包括第二回油口，固井设备还包括第二三通阀9，第二三通阀9包括第四端口、第五端口和第六端口，第四端口与第二润滑油出口或第三出口连通，第五端口与第二入口连通，第六端口与第二回油口连通，其中，第二三通阀9具有第三状态和第四状态，在第三状态时，第四端口与第五端口连通，在第四状态时，第四端口与第六端口连通。
也就是说，在第二传感器11检测到柱塞泵13的输出排量为0时，识别为柱塞泵13不运行，此时，第二三通阀9处于第四状态，此时第二润滑油出口输出的润滑油依次经由第一三通阀8以及第一回油口流回到油箱15中；当检测到柱塞泵13有排量输出时，识别为柱塞泵13在运行，第二三通阀9进入第三状态，第四端口与第五端口连通，此时第二润滑油出口输出 的润滑油依次经由第二三通阀9、第二分配阀6以及柱塞泵13的盘根润滑端，从而为柱塞泵13进行润滑。
实施例二
如图3和图4所示，固井设备包括两个柱塞泵13和至少一个离心泵14，第一润滑油出口和第二润滑油出口均与第一入口连通，柱塞泵13与第二三通阀9一一对应，第二三通阀9的第四端口与第三出口连通，第五端口与第二入口连通，第六端口与第二回油口连通，其中，第二三通阀9具有第三状态和第四状态，在第三状态时，第四端口与第五端口连通，在第四状态时，第四端口与第六端口连通。
如图3所示，第一三通阀8为电磁三通阀81，在第一传感器10检测到离心泵14的转速不为0，识别为离心泵14处于运行状态，电磁三通阀81进入第一状态，第一端口与第二端口连通，此时润滑油泵101输出的润滑油依次经由第一分配阀5、电磁三通阀81以及离心泵14的盘根润滑端，从而为离心泵14进行润滑；在第一传感器10检测到离心泵14的转速为0时，识别为离心泵14不运行，电磁三通阀81进入第二状态，此时第一润滑油出口输出的润滑油依次经由第一分配阀5、电磁三通阀81以及第一回油口流回到油箱15中。
如图4所示，第一三通阀8为液控换向阀82，当离心泵14在运行时，此时油压传递给液控换向阀82的液控口，此时液控换向阀82进入第一状态，第一端口与第二端口连通，此时润滑油泵101输出的润滑油依次经由第一分配阀5、第一三通阀8以及离心泵14的盘根润滑端，从而为离心泵14进行润滑；当离心泵14不运转时，液控换向阀82的液控口没有油压，液控换向阀82在弹簧的作用下移动导通第一端口和第三端口，液控换向阀82进入第二状态，此时第一润滑油出口输出的润滑油依次经由第一分配阀5、液控换向阀82以及第一回油口流回到油箱15中。
当柱塞泵13处于运行状态时，第二三通阀9处于第三状态，第四端口与第五端口导通，此时润滑油泵101输出的润滑油依次经由第一分配阀5、第二三通阀9、第二分配阀6以及柱塞泵13的盘根润滑端，从而为柱塞泵13进行润滑；当柱塞泵13处于停止运行状态时，第二三通阀9处于第四状态， 第四端口与第六端口导通，此时润滑油泵101输出的润滑油依次经由第一分配阀5、第二三通阀9以及第二回油口流回到油箱15中。
其余内容不再赘述。
如图5所示，本公开的控制方法，用于控制上述的固井设备，该控制方法包括：
步骤S1：检测离心泵14是否运行；
步骤S2：在离心泵14处于运行状态时，控制润滑油泵101的第一润滑油出口导通为离心泵14的盘根润滑端提供润滑油，控制第一三通阀8处于第一状态；
步骤S3：检测柱塞泵13是否运行；
步骤S4：在柱塞泵13处于运行状态时，控制润滑油泵101的第二润滑油出口导通为柱塞泵13的盘根润滑端提供润滑油，控制第二三通阀9处于第三状态。
在某些实施方案中，步骤S1和步骤S3不分先后顺序，可以调整顺序。
在某些实施方案中，通过设置第一泵头1和第二泵头2分别为离心泵14盘根和柱塞泵13盘根提供润滑油，通常柱塞泵13盘根需要的润滑油流量较大，离心泵14盘根需要的润滑油流量较小，可以实现分别控制第一泵头1和第二泵头2泵出的油量，来满足柱塞泵13和离心泵14各自的润滑油量需求，在柱塞泵13运行而离心泵14待机时，第二泵头2运行为柱塞泵13盘根提供润滑油，而第一泵头1处于待机状态，在离心泵14运行而柱塞泵13待机时，第一泵头1运行为离心泵14盘根提供润滑油，第二泵头2处于待机状态，如此既不会浪费润滑油，也不会对离心泵14盘根或者柱塞泵13盘根润滑不足。
在某些实施方案中，在离心泵14处于停止运行状态时，控制第一三通阀8处于第二状态；在柱塞泵13处于停止运行时，控制第二三通阀9处于第四状态。
本公开的控制方法能够在离心泵14不需要润滑油润滑时，使得润滑油可以流回到油箱15，不会导致堆积浪费。尤其是在离心泵14包括多个时，部分离心泵14需要润滑，部分离心泵14不需要时，能够使得需要润滑的离心泵14可以得到润滑，不需要润滑的离心泵14对应的支路上的润滑油可以 流回到油箱15，不会导致堆积浪费。
在本公开的描述中，需要理解的是，术语“上”、“下”、“左”、“右”、“内”、“外”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本公开的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本公开的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本公开中的具体含义。
在本说明书的描述中，参考术语“一个实施例”、“某些实施方案”、“示意性实施例”、“示例”、“具体示例”、或“某些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。

Claims (10)

  1. 固井设备，其包括离心泵和柱塞泵以及润滑系统，所述润滑系统包括：
    润滑油泵，所述润滑油泵包括第一通道、与所述第一通道连通的第一润滑油出口、第二通道以及与所述第二通道连通的第二润滑油出口，所述第一通道内设有第一泵头，所述第二通道内设有第二泵头；
    第一分配阀，所述第一分配阀包括第一入口、至少一个第一出口和第三出口，所述第一入口分别和所述至少一个第一出口连通，所述第一出口与所述离心泵的盘根润滑端连通，所述第一润滑油出口与所述第一入口连通，
    第二分配阀，所述第二分配阀包括第二入口和至少一个第二出口，所述第二入口分别和所述至少一个第二出口连通，所述第二出口与所述柱塞泵的盘根润滑端连通，所述第二润滑油出口与所述第二入口连通，或
    所述第二润滑油出口与所述第一入口连通，所述第二入口与所述第三出口连通。
  2. 如权利要求1所述的固井设备，其中所述润滑油泵还包括油箱，所述油箱包括第一回油口，所述固井设备还包括第一三通阀，所述第一三通阀包括第一端口、第二端口和第三端口，所述第一端口与所述第一出口连通，所述第二端口与所述离心泵的盘根润滑端连通，所述第三端口与所述第一回油口连通，其中，
    所述第一三通阀具有第一状态和第二状态，在所述第一状态时，所述第一端口与所述第二端口连通，在所述第二状态时，所述第一端口与所述第三端口连通。
  3. 如权利要求2所述的固井设备，其中所述油箱还包括第二回油口，所述固井设备还包括第二三通阀，所述第二三通阀包括第四端口、第五端口和第六端口，所述第四端口与所述第二润滑油出口或所述第三出口连通，所述第五端口与所述第二入口连通，所述第六端口与所述第二回油口连通，其中，
    所述第二三通阀具有第三状态和第四状态，在所述第三状态时，所述第四端口与所述第五端口连通，在所述第四状态时，所述第四端口与所述第六端口连通。
  4. 如权利要求1至3中任一权利要求所述的固井设备，其中所述离心泵包括多个，所述第一入口包括多个，所述离心泵与所述第一入口一一对应，每个第一入口均与每个所述离心泵的盘根润滑端连通。
  5. 如权利要求1至4中任一权利要求所述的固井设备，其中所述第一分配阀还包括至少两个所述第三出口，所述第二分配阀包括至少两个，所述柱塞泵包括至少两个，所述第三出口、所述第二分配阀以及所述柱塞泵一一对应，每个所述第三出口与一个所述第二入口连通。
  6. 如权利要求1至5中任一权利要求所述的固井设备，其中所述离心泵上设有第一传感器，所述柱塞泵上设有第二传感器，所述固井设备还包括电控单元，所述第一传感器和所述第二传感器均与所述电控单元电性连接。
  7. 如权利要求1至6中任一权利要求所述的固井设备，其中所述第一润滑油出口处和第二润滑油出口处均设有溢流阀和压力开关，和/或所述第一出口与所述离心泵的盘根润滑端连通的管路上设有单向阀。
  8. 如权利要求1至7中任一权利要求所述的固井设备，其中所述柱塞泵的盘根润滑端包括多个润滑点，所述第三出口包括多个，所述润滑点与所述第三出口一一对应，所述润滑点与所述第三出口连通。
  9. 控制方法，用于控制权利要求1至8中任一权利要求所述的固井设备，所述控制方法包括：
    检测离心泵是否运行；
    在所述离心泵处于运行状态时，控制润滑油泵的第一润滑油出口导通为所述离心泵的盘根润滑端提供润滑油；
    检测柱塞泵是否运行；
    在所述柱塞泵处于运行状态时，控制所述润滑油泵的第二润滑油出口导通为所述柱塞泵的盘根润滑端提供润滑油。
  10. 如权利要求9所述的控制方法，其中，
    在所述离心泵处于停止运行状态时，控制所述第一三通阀处于第二状态；
    在所述柱塞泵处于停止运行时，控制所述第二三通阀处于第四状态。
PCT/CN2023/132180 2022-09-19 2023-11-17 固井设备和控制方法 WO2024061383A1 (zh)

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