CN112128169A - Comprehensive hydraulic station for automatic petroleum drilling machine - Google Patents
Comprehensive hydraulic station for automatic petroleum drilling machine Download PDFInfo
- Publication number
- CN112128169A CN112128169A CN202010839756.0A CN202010839756A CN112128169A CN 112128169 A CN112128169 A CN 112128169A CN 202010839756 A CN202010839756 A CN 202010839756A CN 112128169 A CN112128169 A CN 112128169A
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- hydraulic
- pressure
- communicated
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 45
- 239000003208 petroleum Substances 0.000 title description 4
- 238000009826 distribution Methods 0.000 claims abstract description 42
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 26
- 239000002775 capsule Substances 0.000 claims description 22
- 241000282326 Felis catus Species 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 9
- 230000004044 response Effects 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 195
- 239000010720 hydraulic oil Substances 0.000 description 36
- 230000005540 biological transmission Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000002828 fuel tank Substances 0.000 description 5
- 238000013016 damping Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/001—Servomotor systems with fluidic control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to an integrated hydraulic station, in particular to an integrated hydraulic station for an automatic fossil oil drilling machine. The main body comprises a main motor pump assembly, an oil tank assembly, a control valve assembly, a main body valve assembly, a circulating motor pump assembly, a circulating safety valve assembly, an air cooling cooler assembly and a high-pressure oil filter valve block which are communicated through pipelines. The main motor pump assembly includes a hydraulic pump that is a load sensitive pump. The main body is communicated with the control distribution valve box and the control distribution valve box is communicated with a hydraulic machine or equipment through pipelines. The distribution valve box comprises a pressure valve and a flow valve, the control valve manifold comprises a load sensitive feedback oil port, and the load sensitive feedback oil port is communicated with the hydraulic pump. The load sensitive feedback control, the pressure control and the flow control are combined, different pressures and flows, low energy consumption and low heating are provided for different hydraulic machines and equipment at the same time, the response speed of the system and the hydraulic control precision are improved, and the maintenance difficulty and cost are reduced.
Description
Technical Field
The invention relates to the technical field of comprehensive hydraulic stations, in particular to a comprehensive hydraulic station for an automatic fossil oil drilling machine.
Background
An automatic oil drilling machine is equipment used for oil and gas drilling operation. The drilling rig is provided with a plurality of hydraulic power tools and equipment on a drilling platform, and is provided with a comprehensive hydraulic station for supplying power to the hydraulic power tools and equipment. In order to meet different requirements of different hydraulic machines and automatic equipment on hydraulic pressure and flow, a load sensitive feedback system is generally adopted in a comprehensive hydraulic station of an existing automatic oil drilling machine, a load sensitive pump is controlled by the load sensitive valve, signals of pressure and flow required by a load of a hydraulic system are fed back to a hydraulic pump, the hydraulic pump correspondingly adjusts oil output, and different hydraulic pressures and different hydraulic flows are provided for different hydraulic machines and automatic equipment. The comprehensive hydraulic station of the automatic oil drilling machine is large in size and weight and is not suitable for being integrally installed above a drill floor, so that the comprehensive hydraulic station is divided into a control distribution valve box and a main body, and the control distribution valve box and the main body are respectively arranged above and below the drill floor. Wherein the control distribution manifold comprises a plurality of load sensitive valves; the main body comprises a motor pump assembly, an oil tank assembly, a hydraulic oil cooling system, a main body valve assembly and a control valve assembly. The main body is communicated with the control distribution valve box through an oil inlet pipeline, an oil return pipeline, an oil discharge pipeline and a load sensitive feedback pipeline.
Because the volume of the automatic oil drilling machine is large, and the main body and the control distribution valve box are respectively arranged at the upper side and the lower side of the drilling platform, the distance is far, the overlong line of the load sensitive feedback pipeline is caused and exceeds 25m, the pressure transmission speed and the system response speed of the load sensitive feedback pipeline are slow, the hydraulic control precision is low, the actions of a hydraulic machine tool and automatic equipment become slow, the timeliness and the safety of the drilling work of the drilling machine are influenced, and meanwhile, the situation is more serious in a cold environment.
Secondly, as the drilling machine is provided with a plurality of hydraulic machines and equipment, in order to meet different requirements of different hydraulic machines and equipment on the pressure and the flow of hydraulic oil, the control distribution valve box adopts a load sensitive multi-way valve, and the load sensitive multi-way valve comprises a connecting block, a plurality of reversing valve blocks and a tail plate. Each hydraulic machine tool and equipment is independently provided with a reversing valve block, each reversing valve block comprises a load sensitive valve and a reversing valve, the requirements of providing different hydraulic oil pressures and flows for different hydraulic machine tools and equipment are met, and the switching of the opening and closing states of oil paths connecting different hydraulic machine tools and equipment is met. The connecting block comprises a plurality of hydraulic valves and a plurality of oil ports, is communicated with the main body and provides total oil supply pressure and flow for controlling the distribution valve box.
The load-sensitive multi-way valve has a complex structure and high manufacturing cost, so that the difficulty of field maintenance is high and the maintenance cost is high.
Disclosure of Invention
Technical problem to be solved
In view of the above-mentioned shortcomings and drawbacks of the prior art, the present invention provides a comprehensive hydraulic station for an automated oil rig, which solves the technical problems of slow system response speed, low hydraulic control accuracy, complex structure, difficult maintenance and high cost.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the invention provides a comprehensive hydraulic station for an automated oil drilling rig, comprising a control distribution valve box arranged above a drill floor of the drilling rig and a main body arranged below the drill floor of the drilling rig.
The main body comprises a main motor pump assembly, an oil tank assembly, a control valve manifold, a main body valve manifold, a circulating motor pump assembly, a circulating safety valve manifold, an air-cooled cooler assembly and a high-pressure oil filter valve block which are communicated through hydraulic pipelines. The main motor pump assembly comprises a hydraulic pump which is a load sensitive pump.
The main body is communicated with a control distribution valve box through a hydraulic pipeline, and the control distribution valve box is communicated with a hydraulic machine or equipment through a hydraulic pipeline.
The control distribution valve box comprises a pressure valve, a flow valve (24) and a stop valve six (23), the control valve manifold comprises a load sensitive feedback oil port, and the load sensitive feedback oil port is communicated with an oil port of the hydraulic pump.
According to the invention, the tank assembly comprises a safety valve and an air filter fixed on the outer side of the upper wall of the tank, and a breathing capsule fixed on the inner side of the upper wall of the tank. The breathing capsule is communicated with an air filter, and the air filter is communicated with the atmosphere. The oil tank is internally sealed and maintains micro-positive pressure.
According to the invention, the safety valve is set to a value which ensures that the pressure in the tank is maintained at a value which ensures that the breathing capsule is retracted to a minimum volume and that the tank structure is not deformed.
According to the invention, the breathing capsule is made of an oil-resistant material with high elasticity, excellent air tightness and smaller density, and the volume of the breathing capsule is matched with the breathing capacity of the oil tank.
According to the invention, the control valve assembly further comprises a first overflow valve, a standby valve and a second stop valve which are arranged on the oil drainage oil path. The first overflow valve is communicated with the second stop valve and forms a parallel oil path with the standby valve.
According to the invention, the set pressure value of the first overflow valve is smaller than the set pressure value of the hydraulic pump.
When the second stop valve is closed and the standby valve is closed, the pressure value of the hydraulic system is equal to the set pressure value of the hydraulic pump; when the second stop valve is opened and the standby valve is closed, the pressure value of the hydraulic system is equal to the set pressure value of the first overflow valve; when the standby valve is opened, the pressure value of the hydraulic system is equal to the standby pressure value of the hydraulic pump.
According to the invention, the oil outlet end of the flow valve is respectively communicated with the oil inlet ends of a plurality of hydraulic machines or equipment with relatively small flow.
According to the invention, the pressure valve of the control distribution valve box comprises a first pressure reducing valve, a second pressure reducing valve and a pressure proportional valve.
The oil outlet end of the first pressure reducing valve is communicated with the oil inlet end of an iron roughneck, the oil outlet end of the second pressure reducing valve is communicated with the oil inlet ends of a plurality of hydraulic machines or equipment with relatively small flow, and the oil outlet end of the pressure proportional valve is communicated with the oil inlet end of the cat head.
According to the invention, the oil outlet end of the stop valve six is respectively communicated with the oil inlet ends of a plurality of hydraulic machines or equipment with relatively small flow.
According to the invention, the main body valve manifold comprises a second overflow valve, and the second overflow valve is connected in parallel with oil inlet passages of a hydraulic machine and equipment arranged below the drill floor. And the pressure set value of the second overflow valve is 2-3MPa higher than the maximum pressure value of the hydraulic system.
(III) advantageous effects
The invention has the beneficial effects that:
the invention provides a comprehensive hydraulic station for an automatic oil drilling machine, which is characterized in that a load sensitive feedback oil port is arranged on a control valve manifold and is communicated with a hydraulic pump, so that a load sensitive feedback pipeline is arranged below a drill floor of the drilling machine, the length of the load sensitive feedback pipeline is shortened, the pressure transmission distance is further shortened, and the response speed of a system and the hydraulic control precision are improved.
Secondly, the flow valve is arranged on the control distribution valve box, so that the total flow of hydraulic oil flowing through hydraulic machines and equipment with relatively small flow, such as a drill floor mechanical arm, a buffering mechanical arm, a drill rod power tong and the like in standby is limited, and the damping heating caused by a large amount of hydraulic oil flowing through a hydraulic pipeline in standby of the hydraulic machines and equipment is effectively controlled. And different flow distribution of a plurality of devices during simultaneous working is realized through a stop valve six which is independently configured for each hydraulic machine tool with relatively small flow and the device. The first pressure reducing valve used for controlling the hydraulic pressure of the iron roughneck, the second pressure reducing valve used for controlling the hydraulic pressure of the hydraulic machine tool and equipment with relatively small flow and the proportional pressure reducing valve used for controlling the hydraulic pressure of the cat head are arranged in the control distribution valve box, so that different hydraulic pressures are configured for different hydraulic machine tools and equipment.
The invention reduces the arrangement of the hydraulic valve by combining the load sensitive feedback control, the pressure control and the flow control, and adopts the pressure valve, the flow valve and the stop valve which have lower cost and simple structure, thereby realizing the simultaneous supply of different pressures and flows for different hydraulic machines and automation equipment, supporting the normal operation of the automatic petroleum drilling machine, realizing low energy consumption and low heat generation, shortening the pressure transmission distance, improving the system response speed and the hydraulic control precision, and reducing the cost and the maintenance difficulty.
Drawings
FIG. 1 is a schematic diagram of an integrated hydraulic station for an automated fossil oil rig in accordance with the present invention;
FIG. 2 is a hydraulic schematic of FIG. 1;
FIG. 3 is a hydraulic schematic of the tank assembly of FIG. 1;
FIG. 4 is a hydraulic schematic of the control valve manifold of FIG. 1;
FIG. 5 is a hydraulic schematic of the main body valve manifold of FIG. 1;
fig. 6 is a hydraulic schematic diagram of the control distribution valve box of fig. 1.
[ description of reference ]
1: a main body; 11: a main motor pump assembly; 12: an oil tank assembly; 121: an oil tank; 122: a safety valve; 123: an air cleaner; 124: a liquid level sensor; 125: an oil temperature sensor; 126: a breathing capsule; 127: a first ball valve; 128: a ball valve II; 129: a ball valve III; 13: a control valve assembly; 131: a first stop valve; 132: a second stop valve; 133: a third stop valve; 134: a first overflow valve; 135: a standby valve; 136: an accumulator; 14: a main body valve manifold; 141: a stop valve IV; 142: a fifth stop valve; 143: an overflow valve II; 15: a circulating motor pump assembly; 16: a circulation safety valve manifold; 17: air-cooled cooler assembly: 18: a high pressure oil filter valve block; 2: controlling the distribution valve box; 21: a pressure gauge; 22: a first pressure reducing valve; 23: a stop valve six; 24: a flow valve; 25: a second pressure reducing valve; 26: a first reversing valve; 27: a second reversing valve; 28: a proportional pressure reducing valve; p: an oil inlet; t: an oil return port; l: an oil drainage port; LS: and a load sensitive feedback oil port.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present invention provides an integrated hydraulic station for an automated oil drilling rig, comprising a main body 1 disposed below the floor of the drilling rig, and a control distribution valve box 2 disposed above the floor of the drilling rig. The main body 1 includes a main motor pump assembly 11, an oil tank assembly 12, a main body valve manifold 14, and a control valve manifold 13, which are communicated through hydraulic lines. The main motor pump assembly 11 includes a hydraulic pump, which is a load sensitive pump. The main body 1 communicates with the control distribution valve box 2 through a hydraulic line. The control distribution valve box 2 comprises a pressure valve, a flow valve 24, an oil inlet, an oil return port and an oil drainage port. The main body valve manifold 14 comprises an oil inlet, an oil return port and an oil drainage port. The control valve manifold 13 includes a load sensitive feedback port. The load sensitive feedback oil port is communicated with an oil port of the hydraulic pump, signals of pressure and flow required by a load of the hydraulic system are fed back to the hydraulic pump, and the hydraulic pump correspondingly adjusts the oil output. The oil inlet, the oil return port and the oil drain port of the control distribution valve box 2 correspond to the oil inlet, the oil return port and the oil drain port of the main body valve manifold 14 respectively and are communicated through hydraulic pipelines.
Further, main part 1 still includes circulation motor pump assembly 15, when filling oil to the oil tank inside, circulation motor pump assembly 15's oil feed end and oil drum are linked together through filling oil pipeline, and the oil-out is linked together through hydraulic pressure pipeline with the oil feed end of oil tank assembly 12.
Further, the main body 1 further comprises a circulation safety valve manifold 16 and an air-cooled cooler assembly 17. The oil outlet end of the circulating motor pump assembly is communicated with the oil inlet end of the circulating safety valve manifold, the oil outlet end of the circulating safety valve manifold is communicated with the oil inlet end of the air-cooled cooler assembly, and the oil outlet end of the air-cooled cooler assembly is communicated with the oil inlet end of the oil tank assembly 12. The circulation safety valve is converged with a pressure gauge for monitoring the pressure value of the hydraulic oil circulation cooling system. The air-cooled cooler 17 is used for reducing the temperature of hydraulic oil and avoiding the influence of the overheating of the hydraulic oil on the normal work of the comprehensive hydraulic station.
Further, main part 1 still includes that the high-pressure oil that sets up on the oil feed oil circuit of connecting main motor pump assembly 11 and main part valve assembly 14 strains valve block 18, it strains to be equipped with high-pressure oil in the high-pressure oil strains valve block 18 and strains. The high-pressure oil filter valve block 18 is used for filtering and removing impurities in hydraulic oil flowing out of the main motor pump assembly 11 so as to keep the oil path clean. The high-pressure oil filter can be conveniently replaced after the comprehensive hydraulic station works for a long time, and the cleaning and maintenance are convenient.
Further, the main motor pump assembly 11 is provided with two sets, and when the main motor pump assembly works, one set is in a working state, and the other set is in a standby state. When one group of main motor pump assembly 11 has a fault, the other group of main motor pump assembly 11 can be switched at any time, and uninterrupted work of the comprehensive hydraulic station is guaranteed.
Further, the main motor pump assembly 11 further comprises a main motor and a one-way valve block, and the main motor pump assembly 11 provides power for the comprehensive hydraulic station.
Further, as shown in fig. 3, the fuel tank assembly 12 includes a safety valve 122, an air cleaner 123, a liquid level sensor 124 and an oil temperature sensor 125 fixed to the outside of the upper wall of the fuel tank 121, a breathing capsule 126 fixed to the inside of the upper wall of the fuel tank 121, a liquid level liquid thermometer and an electric heater fixed to the side wall of the fuel tank 121, and a return oil filter, an oil suction filter, a first ball valve 127, a second ball valve 128 and a third ball valve 129 fixed to the outside of the lower wall of the fuel tank 121. The breathing capsule 126 is in communication with an air filter 123, the air filter 123 being in communication with the atmosphere.
The rising or falling of the oil level of the hydraulic oil in the oil tank 121 causes the increase or decrease of the air pressure in the oil tank 121, thereby causing the contraction or expansion of the breathing capsule 126. The safety valve 122 is a normally closed valve, and the safety valve 122 has a set value that ensures the air pressure in the oil tank 121 when the breathing capsule 126 is contracted to a minimum volume and the structure of the oil tank 121 is not deformed. When the air pressure in the oil tank 121 exceeds the set value of the relief valve 122, the relief valve 122 is switched to an open state and discharges the excess air in the oil tank 121, thereby preventing the breathing capsule 126 and the oil tank 121 from being damaged and maintaining the constant pressure inside the oil tank 121. The air filter 123 is used for filtering dirt such as dust and sand in the air, and the dirt is prevented from entering the oil tank 121 to pollute the hydraulic oil and influence the normal operation of the hydraulic system. The oil level switch 124 and the liquid level thermometer are used for monitoring the oil level of hydraulic oil in the oil tank 121, and alarming when the oil level is higher than or lower than a set oil level, so that overflow caused by too high oil level of the hydraulic oil and incapability of normal operation of a hydraulic system when the oil level is too low are avoided. The oil temperature sensor 125 is used for monitoring the temperature of the hydraulic oil in the oil tank 121, so as to avoid danger such as fire caused by overheating of the oil temperature. The third ball valve 129 is a normally closed valve and is opened when hydraulic oil is replaced and discharged, so that the situation that the hydraulic oil flows out from a hydraulic pipeline or an oil tank 121 to pollute the external environment during normal work is avoided. The oil filter is used for filtering and removing impurities in the hydraulic oil flowing into or out of the oil tank 121 so as to keep the oil path clean. The electric heater is used for reducing the viscosity of the hydraulic oil.
Before the work, firstly closing the second ball valve 128, connecting one end of the oil feeding pipeline with an oil drum, starting the circulating motor pump assembly, pumping hydraulic oil into the oil tank 121 from the oil drum through the first ball valve 127, increasing the air pressure value in the oil tank 121 along with the gradual rise of the oil level of the hydraulic oil in the oil tank 121, extruding the breathing capsule 126 to the minimum volume of the breathing capsule 126, and triggering the safety valve 122 to open when the air pressure value reaches the set value of the safety valve 122, so that air is discharged from the safety valve 122. During operation, the oil level of the hydraulic oil in the oil tank 121 rises and falls, the squeezing breathing capsule 126 contracts or expands along with the rising oil level, and when the air pressure value reaches the set value of the safety valve 122, the safety valve 122 is triggered to open, and air is exhausted. Through the cooperation of breathing capsule 126, air cleaner 123 and relief valve 122 makes oil tank 121 internal seal and keep the pressure-fired, and then guarantees the inside leakproofness of oil tank 121, avoids dust and moisture in the air to get into and makes hydraulic oil oxidation rotten in the oil tank 121 to the change cycle and the life of extension hydraulic oil, thereby, the oil absorption efficiency of oil pump can be improved to clear hydraulic oil can avoid the oil circuit to block up. The micro positive pressure is that the air pressure in the oil tank 121 is about 0.5MPa higher than the atmospheric pressure, and the specific value of the micro positive pressure is consistent with the set value of the safety valve 122.
Specifically, the breathing capsule 126 is made of an oil-resistant material with high elasticity, excellent air tightness and low density, the volume of the breathing capsule is matched with the breathing capacity of the oil tank, and the breathing capacity of the hydraulic station refers to the maximum difference of the volume change of the oil liquid in the oil tank 121.
Further, as shown in fig. 4, the stop valves of the control valve manifold 13 include a first stop valve 131, a second stop valve 132, and a third stop valve 133, and the first stop valve 131 and the second stop valve 132 are normally open valves. The control valve assembly comprises a control valve manifold 13, a stop valve I131, a stop valve III 133, a standby valve 135, an overflow valve I134 and a stop valve II 132, wherein the stop valve I131 is arranged on an oil inlet path of the control valve manifold 13, the stop valve III 133 is connected with the oil inlet path and a load sensitive feedback path of the control valve manifold 13, the standby valve 135, the overflow valve I134 and the stop valve II 132 are arranged between an oil drainage path and a load sensitive feedback path of the control valve manifold 13, an oil inlet of the overflow valve I134 is connected with an oil outlet of the stop valve II 132 through an oil. The set pressure value of the first overflow valve 134 is smaller than that of the hydraulic pump. Through the combined match of the opening or closing states of the standby valve 135 and the second stop valve 132, three pressure states of the hydraulic system are formed:
when the second stop valve 132 is closed and the standby valve 135 is closed, the pressure value of the hydraulic system is equal to the set pressure value of the hydraulic pump;
when the second stop valve 132 is opened and the standby valve 135 is closed, the pressure value of the hydraulic system is equal to the set pressure value of the first overflow valve 134;
when the standby valve 135 is opened, the pressure value of the hydraulic system is equal to the standby pressure value of the hydraulic pump, so that the hydraulic system is in a standby low-pressure circulation state.
According to the invention, through the combined matching of the opening or closing of the standby valve 135 and the second stop valve 132, three pressure values required by the hydraulic system in three working states can be provided, the oil supply control of the comprehensive hydraulic station is completed, and the purposes of energy conservation, environmental protection and improvement of use safety are achieved. The set pressure value of the hydraulic pump and the overflow valve I134 is determined according to the actual requirement.
In practical application, the drill floor is provided with various types of hydraulic machines and equipment, such as an iron roughneck, a drill floor manipulator, a buffer manipulator, a drill rod power tong, a derrick centering device, a button cleaning machine, a buffer cylinder operation box and the like. Different hydraulic machines and equipment have different requirements on the pressure and the displacement of hydraulic oil, and the control modes of the operation and the control are different. For example, different brands or models of iron roughneck equipment require different hydraulic pressures; the oil inlet and the oil return opening are kept open when hydraulic machines such as a drill rod power tong, a buffer cylinder operation box and the like are in an operation clearance, and the oil inlet and the oil return opening are closed when other equipment is in the operation clearance.
In order to meet different requirements of different hydraulic machines and equipment on the pressure and the discharge capacity of hydraulic oil, in the prior art, a plurality of load sensitive valves are generally arranged in a control distribution valve box 2, and the load sensitive valves and a load sensitive pump are connected through hydraulic pipelines to form a load sensitive feedback pipeline. Because the volume of the automatic oil drilling machine is large, the main body 1 and the control distribution valve box 2 are respectively arranged at the upper side and the lower side of the drilling platform, and the distance is long, the line of the load sensitive feedback pipeline is too long and exceeds 25m, the pressure transmission speed and the system response speed of the load sensitive feedback pipeline are slow, the hydraulic control precision is low, the condition is more serious in a cold environment, the actions of a hydraulic machine tool and automatic equipment become slow, and the timeliness and the safety of the drilling work of the drilling machine are seriously influenced. According to the invention, the load sensitive feedback oil port LS is arranged on the control valve manifold 13 and is communicated with the hydraulic pump, so that the load sensitive feedback pipelines are all positioned below the drill floor of the drilling machine, and the line length is shortened to about 2m, thereby shortening the pressure transmission distance and improving the response speed of the system and the hydraulic control precision.
Further, the control valve manifold 13 further comprises an accumulator 136, and the accumulator 136 is communicated with the first stop valve 131. The accumulator 136 can store redundant hydraulic oil and release the supplementary flow of the hydraulic oil when the flow of the hydraulic oil of the hydraulic system is insufficient, so that the purposes of buffering, pressure stabilization, energy conservation and noise reduction are achieved.
Further, the control valve manifold 13 further includes an oil inlet, an oil return port and an oil drain port.
Further, as shown in fig. 5, the main body valve manifold 14 includes an oil inlet, an oil return port and an oil drain port corresponding to the oil inlet, the oil return port and the oil drain port of the control valve manifold 13, respectively, and an oil inlet, an oil return port and an oil drain port corresponding to the oil inlet, the oil return port and the oil drain port installed in the BOP hoisting below the drill floor and the drill rig. And a fourth stop valve 141 and a fifth stop valve 142 are respectively arranged on the oil inlet oil path for hoisting the BOP and sliding the drilling machine, and the stop valves are used for controlling oil supply and oil cut of the oil inlet oil path. The main body valve manifold 14 further comprises a second overflow valve 143 connected with the fourth stop valve 141 and the fifth stop valve 142 in parallel, and the pressure set value of the second overflow valve 143 is about 2-3MPa higher than the set pressure value of the hydraulic pump. The second overflow valve 143 overflows the excess flow of the hydraulic system back to the oil tank 121, and the pressure value of the hydraulic system can be controlled to further keep the safe operation of the hydraulic system.
Further, as shown in fig. 6, the pressure reducing valves of the control distribution valve box 2 include a first pressure reducing valve 22 and a second pressure reducing valve 25. The oil outlet end of the first pressure reducing valve 22 is communicated with the oil inlet end of an iron roughneck, the oil outlet end of the second pressure reducing valve 25 is respectively communicated with the oil inlet ends of a drill floor mechanical arm, a buffer mechanical arm, a drill rod power tong and other relatively small-flow hydraulic machines and equipment through hydraulic pipelines, and the oil outlet end of the proportional pressure reducing valve 28 is respectively communicated with the oil inlet ends of the left cat head, the rotary cat head and the right cat head. The first pressure reducing valve 22 is used for setting hydraulic oil pressure required by an iron roughneck. And the second pressure reducing valve 25 is respectively used for limiting the total oil supply pressure of hydraulic machines and equipment with relatively small flow, such as a drill floor mechanical arm, a buffer mechanical arm, a drill rod power tong and the like. The proportional pressure reducing valve 28 is used for adjusting the working pressure of the left cat head, the rotary cat head and the right cat head.
Further, the control distribution valve box 2 further comprises a flow valve 24, and the oil inlet end of the second pressure reducing valve 25 is communicated with the oil outlet end of the flow valve 24. The flow valve 24 is used for limiting the total oil supply flow of hydraulic machines and equipment with relatively small flow, such as a drill floor manipulator, a buffer manipulator, a drill rod power tong and the like, and the use pressure of the hydraulic machines and equipment with relatively small flow is the same, generally 16MPa, so that different hydraulic pressures do not need to be configured independently.
The control distribution valve box 2 further comprises a plurality of stop valves six 23 which are respectively communicated with oil inlet ends of relatively small-flow hydraulic machines and equipment such as a drill floor mechanical arm, a buffer mechanical arm, a drill rod power tong and the like. By opening or closing the stop valve six 23, oil supply and oil cut-off of hydraulic machines and equipment communicated with the stop valve six can be realized. The stop valve six 23 can also adjust the flow of the hydraulic oil passing through the valve port by adjusting the opening size of the channel, so as to provide different hydraulic oil flows for different hydraulic machines and equipment.
In the prior art, in order to meet different hydraulic oil pressures and flows required by different hydraulic machines and equipment, meet the switching of the opening and closing states of oil paths for connecting different hydraulic machines and equipment, and prevent damping heating caused by a large amount of hydraulic oil flowing through a hydraulic pipeline, a load-sensitive multi-way valve is generally adopted for the control distribution valve box 2. The load-sensitive multi-way valve comprises a connecting block, a plurality of reversing valve blocks and a tail plate. Each hydraulic implement and device is individually provided with a directional valve block, and each directional valve block comprises a load sensitive valve and a directional valve. The connecting block comprises a plurality of hydraulic valves and a plurality of oil ports, is communicated with the main body and provides total oil supply pressure and flow for controlling the distribution valve box. Because the structure of the load sensitive valve is complex and the cost is high, the difficulty of field maintenance is high, and the maintenance cost is high.
The load sensitive feedback control is realized by arranging the load sensitive feedback oil port on the control valve manifold 13 and communicating the hydraulic pump; the flow valve 24 is arranged on the control distribution valve box 2 to limit the total flow of hydraulic machines and equipment with relatively small flow, such as a hydraulic oil drill floor mechanical arm, a buffer mechanical arm, a drill rod power tong and the like in standby, so that the damping heating caused by the fact that hydraulic oil passes through a hydraulic pipeline in standby of the hydraulic machines and equipment is effectively prevented; different flow distribution of a plurality of devices during simultaneous working is realized through a stop valve six 23 which is independently configured for each hydraulic machine tool with relatively small flow and the device; different hydraulic pressures are configured for different hydraulic machines and equipment by arranging a first pressure reducing valve 22 for controlling the hydraulic pressure of the iron roughneck, a second pressure reducing valve 25 for controlling the hydraulic machines and equipment with relatively small flow and a proportional pressure reducing valve 28 for controlling the hydraulic pressure of the cat head on the control distribution valve box 2. The invention realizes that different pressures and flows are simultaneously provided for different hydraulic machines and automatic equipment by combining the control of the load sensitive system, the pressure control and the flow control, supports the normal operation of the automatic petroleum drilling machine, realizes low energy consumption and low heat generation, shortens the pressure transmission distance, improves the response speed of the system and the hydraulic control precision, and reduces the cost and the maintenance difficulty.
Further, control distribution valve case 2 still includes the switching-over valve 26 of being connected with the oil feed oil circuit of left cat head, rotatory cat head and right cat head to and the three switching-over valve two 27 of being connected with the oil feed oil circuit of left cat head, rotatory cat head and right cat head respectively, three switching-over valve two 27 is used for controlling the direction of motion of left cat head, rotatory cat head and right cat head respectively.
Further, the control distribution valve box 29 also comprises four pressure gauges 21. The pressure gauges are respectively arranged at the oil inlet ends of the control distribution valve box 29, the iron roughneck, the hydraulic machines and equipment with relatively small flow and the cat head and respectively display the oil inlet pressure of the hydraulic system, the iron roughneck, the hydraulic machines and equipment with relatively small flow and the cat head.
The stop valve can be set to be a manual valve or an electric control valve according to actual requirements, the electric control valve is preferred, the pressure value of the hydraulic system can be conveniently set and switched, the oil way is conveniently cut off when the hydraulic station is maintained, and the use convenience and the use safety of the comprehensive hydraulic station are improved.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (10)
1. An integrated hydraulic station for an automated fossil oil drilling rig, comprising a control distribution valve box (2) arranged above the drilling floor of the drilling rig and a body (1) arranged below the drilling floor of the drilling rig;
the main body (1) comprises a main motor pump assembly (11), an oil tank assembly (12), a control valve manifold (13), a main body valve manifold (14), a circulating motor pump assembly (15), a circulating safety valve manifold (16), an air-cooled cooler assembly (17) and a high-pressure oil filter valve block (18) which are communicated through hydraulic pipelines; the main motor pump assembly (11) comprises a hydraulic pump which is a load-sensitive pump;
the main body (1) is communicated with a control distribution valve box (2) through a hydraulic pipeline, and the control distribution valve box (2) is communicated with a hydraulic machine or equipment through a hydraulic pipeline;
the hydraulic control system is characterized in that the control distribution valve box (2) comprises a pressure valve, a flow valve (24) and a stop valve six (23), the control valve manifold (13) comprises a load sensitive feedback oil port, and the load sensitive feedback oil port is communicated with an oil port of a hydraulic pump.
2. The integrated hydraulic station for automated fossil oil drilling rig according to claim 1, wherein the tank assembly (12) includes a safety valve (122) and an air cleaner (123) secured to the outside of the upper wall of the oil tank (121), and a breathing capsule (126) secured to the inside of the upper wall of the oil tank (121);
the breathing capsule (126) is communicated with an air filter (123), and the air filter (123) is communicated with the atmosphere;
the oil tank (121) is internally closed and maintains a slight positive pressure.
3. The integrated hydraulic station for automated fossil oil drilling rig according to claim 2, characterized in that the safety valve (122) is set to a value that ensures the air pressure in the tank (121) when the breathing capsule (126) is deflated to a minimum volume and the tank (121) structure is not deformed.
4. The integrated hydraulic station for an automated oil drilling rig according to claim 3, characterized in that the breathing capsule (126) is made of an oil-resistant material with high elasticity, excellent air tightness and low density, and the volume of the breathing capsule is adapted to the breathing capacity of the oil tank.
5. The integrated hydraulic station for automated fossil oil drilling rigs according to claim 1, characterized in that the control valve manifold (13) further comprises a first overflow valve (134), a second standby valve (135) and a second stop valve (132) provided on the oil drain path thereof;
the overflow valve I (134) is communicated with the stop valve II (132) and forms a parallel oil path with the standby valve (135).
6. The integrated hydraulic station for automated fossil oil drilling rigs according to claim 5, characterized in that the set pressure value of the first overflow valve (134) is smaller than the set pressure value of the hydraulic pump;
when the second stop valve (132) is closed and the standby valve (135) is closed, the pressure value of the hydraulic system is equal to the set pressure value of the hydraulic pump;
when the second stop valve (132) is opened and the standby valve (135) is closed, the pressure value of the hydraulic system is equal to the set pressure value of the first overflow valve (134);
when the standby valve (135) is opened, the pressure value of the hydraulic system is equal to the standby pressure value of the hydraulic pump.
7. The integrated hydraulic station for automated fossil oil drilling rigs according to claim 1, characterized in that the flow valves (24) have their outlet ends respectively communicating with the inlet ends of a plurality of relatively small flow hydraulic implements or equipment.
8. Integrated hydraulic station for automated fossil oil drilling rigs according to claim 1, characterized in that the pressure valves of the control distribution valve box (2) comprise a first pressure reducing valve (22), a second pressure reducing valve (25) and a pressure proportional valve (28);
the oil outlet end of the first pressure reducing valve (22) is communicated with the oil inlet end of an iron roughneck; the oil outlet end of the second reducing valve (25) is respectively communicated with the oil inlet ends of a plurality of hydraulic machines or equipment with relatively small flow; the oil outlet end of the pressure proportional valve (28) is communicated with the oil inlet end of the cat head.
9. The integrated hydraulic station for automated fossil oil drilling rigs according to claim 1, characterized in that the oil outlet ends of the shut-off valves six (23) are respectively in communication with the oil inlet ends of a plurality of relatively small flow hydraulic implements or equipment.
10. The integrated hydraulic station for automated fossil oil drilling rigs according to claim 1, wherein the main body manifold (14) includes a second overflow valve (143), the second overflow valve (143) being connected in parallel with the oil inlet circuit of hydraulic implements and equipment disposed below the drill floor;
and the pressure set value of the second overflow valve (143) is 2-3MPa higher than the maximum pressure value of the hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010839756.0A CN112128169B (en) | 2020-08-19 | 2020-08-19 | Comprehensive hydraulic station for automatic petroleum drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010839756.0A CN112128169B (en) | 2020-08-19 | 2020-08-19 | Comprehensive hydraulic station for automatic petroleum drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112128169A true CN112128169A (en) | 2020-12-25 |
| CN112128169B CN112128169B (en) | 2022-09-09 |
Family
ID=73851800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010839756.0A Active CN112128169B (en) | 2020-08-19 | 2020-08-19 | Comprehensive hydraulic station for automatic petroleum drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112128169B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006220244A (en) * | 2005-02-14 | 2006-08-24 | Riken Seiki Kk | Hydraulic actuator control method and its device |
| CN202304960U (en) * | 2011-10-25 | 2012-07-04 | 恽俊伟 | Oil level indicator of oil conservator |
| CN202788599U (en) * | 2012-01-20 | 2013-03-13 | 中船重工中南装备有限责任公司 | Rock drilling control system for rock drill |
| CN204041578U (en) * | 2014-07-01 | 2014-12-24 | 李学君 | Intelligent rig power hydraulic system |
| CN104343433A (en) * | 2014-10-31 | 2015-02-11 | 山河智能装备股份有限公司 | Full-hydraulic adaptive coupling control loop for rotation and propelling of rock drilling machine and control method |
-
2020
- 2020-08-19 CN CN202010839756.0A patent/CN112128169B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006220244A (en) * | 2005-02-14 | 2006-08-24 | Riken Seiki Kk | Hydraulic actuator control method and its device |
| CN202304960U (en) * | 2011-10-25 | 2012-07-04 | 恽俊伟 | Oil level indicator of oil conservator |
| CN202788599U (en) * | 2012-01-20 | 2013-03-13 | 中船重工中南装备有限责任公司 | Rock drilling control system for rock drill |
| CN204041578U (en) * | 2014-07-01 | 2014-12-24 | 李学君 | Intelligent rig power hydraulic system |
| CN104343433A (en) * | 2014-10-31 | 2015-02-11 | 山河智能装备股份有限公司 | Full-hydraulic adaptive coupling control loop for rotation and propelling of rock drilling machine and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112128169B (en) | 2022-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104533856B (en) | Full-hydraulic drill type coal mining machine hydraulic control system | |
| CN212297074U (en) | Hydraulic system of guide rail grinding machine | |
| CN103343759A (en) | Dual-purpose multi-channel hydraulic proportional valve | |
| CN112983909B (en) | Movable arm hydraulic system | |
| CN102220863B (en) | Valve-controlled automatic confluence hydraulic system for horizontal directional drilling machine | |
| CN112128169B (en) | Comprehensive hydraulic station for automatic petroleum drilling machine | |
| CN105387015A (en) | Energy-saving hydraulic valve | |
| CN105443513B (en) | A kind of Working machine | |
| CN205918969U (en) | Gear pump control formula electro -hydraulic linkage actuating mechanism | |
| CN211474417U (en) | Open hydraulic pump and open hydraulic system | |
| CN110397646B (en) | Oil cylinder control system and control method | |
| CN203229324U (en) | Hydraulic control system of hydraulic tower crane and hydraulic tower crane | |
| CN202090904U (en) | Automatic valve-controlled confluent hydraulic system of horizontal directional drilling machine | |
| CN202789859U (en) | Hydraulic energy-saving temperature controlling system for loader working equipment | |
| CN207513973U (en) | Novel machine tool hydraulic pumping plant | |
| CN105952947A (en) | Gear pump control type electrohydraulic linkage actuator | |
| CN210461747U (en) | Automatic control large-diameter quick cut-off bellows gate valve | |
| CN212838670U (en) | Novel closed hydraulic oil way | |
| CN203348201U (en) | Energy recycling hydraulic control valve | |
| CN104179738A (en) | Open hydraulic system for glide loading machine | |
| CN103352886B (en) | Hydraulic control valve for energy recovery | |
| CN210660795U (en) | Six-foot hydraulic system | |
| CN209800384U (en) | remote pressure regulating load sensitive hydraulic station | |
| CN208653788U (en) | A kind of novel hydraulic press oil-water balance system | |
| CN203441852U (en) | Bidirectional automatic unloading pressure retaining valve for electric and hydraulic grab bucket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 328, Haishunde building, A1 Donghuan North Road, Daxing Economic and Technological Development Zone, Beijing 100176 Patentee after: Beijing Jiejie West Technology Co.,Ltd. Address before: Room 328, Haishunde building, A1 Donghuan North Road, Daxing Economic and Technological Development Zone, Beijing 100176 Patentee before: Beijing Jiejiexi Petroleum Equipment Co.,Ltd. |
|
| CP03 | Change of name, title or address |