CN103437754A - Pressurization control method and pressurization control system for rotary drilling rig - Google Patents
Pressurization control method and pressurization control system for rotary drilling rig Download PDFInfo
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- CN103437754A CN103437754A CN201310368278XA CN201310368278A CN103437754A CN 103437754 A CN103437754 A CN 103437754A CN 201310368278X A CN201310368278X A CN 201310368278XA CN 201310368278 A CN201310368278 A CN 201310368278A CN 103437754 A CN103437754 A CN 103437754A
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- 238000005553 drilling Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000002828 fuel tank Substances 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 238000011068 loading method Methods 0.000 abstract description 18
- 230000007246 mechanism Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 157
- 238000005520 cutting process Methods 0.000 description 7
- 239000010720 hydraulic oil Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 241001074085 Scophthalmus aquosus Species 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 210000003371 toe Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The invention discloses a pressurization control method and a pressurization control system for a rotary drilling rig, wherein the pressurization control method for the rotary drilling rig comprises the following steps: respectively acquiring pressure values of rodless cavities of a left mast oil cylinder (11) and a right mast oil cylinder (16) of the rotary drilling rig; the controller processes the pressure value of the rodless cavity of the left mast oil cylinder (11) and the pressure value of the rodless cavity of the right mast oil cylinder (16) to obtain the pressure difference value of the rodless cavities of the left mast oil cylinder (11) and the right mast oil cylinder (16); and controlling the pressure of the rodless cavity of the pressurizing oil cylinder (20) according to the relation between the preset pressure difference value and the pressure of the rodless cavity of the pressurizing oil cylinder (20). The invention can automatically adjust the pressure and the pressurizing speed of the pressurizing oil cylinder on the power head, reduce the unbalance loading of a drill rod, a mast and the like caused by the impact load and the unbalance loading of a drill bit, reduce the vibration frequency, and avoid the occurrence of personal and equipment safety accidents caused by the damage of a working mechanism and the falling of damaged parts at high altitude due to the factors of human judgment error or operation delay and the like.
Description
Technical field
The present invention relates to technical field of engineering machinery, relate in particular to rotary drilling rig pressure control method and pressurizing control system.
Background technology
Rotary drilling rig is the pile foundation equipment comparatively widely that uses at present, refer to Fig. 1, its course of work is, drill bit 4 descends and reaches a hole 2 bottom job positions with drilling rod 1,1 rotation of fluid motor-driven drilling rod, drilling rod 1 is connected with drill bit 4 by connecting square toes, and drilling rod 1 drives brill tooth 5 cuttings of drill bit 4 and creeps into operation.In drilling condition, the pressurization oil cylinder applies a certain size downward pressure to unit head, and the piston rod of pressurization oil cylinder stretches out and drives unit head, drilling rod, drill bit and move down.
The brill tooth 5 of drill bit 4 meets following two kinds of situations in cutting and drilling process: one, part cutting face A is soil layer, and another part cutting face B is rock; Two, part cutting face A is hollow, when the cut-in without ball bevel B of another is rock, refers to Fig. 2, because boring tooth 5, is symmetrical along the drill bit cross section center of circle, when the cutting of the cutting face of different geology (pan soil, rock), bores the component Fb of tooth 5 in level, vertical direction
1, Fb
2with Fa
1, Fa
2differ in size, drill bit 4 can produce serious unbalance loading.The size of unbalance loading is relevant with following factor: one, the hardness of two kinds of geological stratifications, intensity differ larger, and the suffered partial load of drill bit 4 is just larger; Two, the plus-pressure of pressurization oil cylinder is larger, and the suffered partial load of drill bit 4 is just larger; Three, the rotary speed of drill bit 4 is faster, and the suffered partial load of drill bit 4 is just larger.Drill bit 4 unbalance loadings can produce vibration, and drilling bucket 3, drilling rod 1, unit head and arbitrary-movement articulator also can bear corresponding unbalance loading load and corresponding vibration, and corresponding structural member is damaged.Partial load is larger, the vibration frequency produced is higher, the suffered shock loading of structural member is just larger, when serious, can cause drilling bucket 3 to snap with the square toes that drilling rod 1 is connected, even rupture, cause drill bit " buried " or drop from high-altitude, simultaneously, cause that the mast guide rail snaps, distortion, the U-shaped groove cracking of arbitrary-movement articulator, distortion etc., main operating mechanism can't work.
Summary of the invention
The technical problem to be solved in the present invention is to provide and a kind ofly prevents the drill bit unbalance loading and damage the pressure control method of structural member.
Rotary drilling rig pressure control method provided by the invention comprises the following steps:
Obtain respectively the force value of the rodless cavity of the left mast oil cylinder of rotary drilling rig and right mast oil cylinder;
Controller is processed the force value of left mast oil cylinder rodless cavity and the force value of right mast oil cylinder rodless cavity, obtains the pressure difference of the rodless cavity of left mast oil cylinder and right mast oil cylinder;
According to the relation between the pressure of default pressure difference and pressurization oil cylinder rodless cavity, control the pressure of pressurization oil cylinder rodless cavity.
Preferably, further comprising the steps of: according to default pressure difference and be the relation between the variable pump of power head motor fuel feeding of described rotary drilling rig, the control variables pump delivery.
The present invention also provides a kind of rotary drilling rig pressurizing control system, comprises left mast oil cylinder, right mast oil cylinder and pressurization oil cylinder, also comprises: checkout gear, for detection of the rodless cavity force value of left mast oil cylinder and right mast oil cylinder; Controller, left mast oil cylinder rodless cavity force value and right mast oil cylinder rodless cavity force value are processed, obtain the pressure difference of the rodless cavity of left mast oil cylinder and right mast oil cylinder, and, according to the relation between the pressure of default pressure difference and pressurization oil cylinder rodless cavity, control the pressure of pressurization oil cylinder rodless cavity.
Preferably, described checkout gear comprises the first pressure sensor and the second pressure sensor be connected with the rodless cavity of described left mast oil cylinder and right mast oil cylinder respectively.
Preferably, be provided with alarm on described the first pressure sensor and the second pressure sensor; When described pressure difference reaches setting value, described alarm equipment alarm.
Preferably, described system also comprises the first control valve that is connected and the pressure of this rodless cavity is regulated with the rodless cavity of described pressurization oil cylinder, described the first control valve comprises a control end be connected with described controller, and described controller is controlled the pressure of the rodless cavity of pressurization oil cylinder by described the first control valve.
Preferably, described the first control valve is electric proportional pressure control valve, and described electric proportional pressure control valve comprises and the oil-in be communicated with of described pressurization oil cylinder rodless cavity, the oil-out be communicated with fuel tank and the control end that is electrically connected to described controller.
Preferably, described system also comprises power head motor, is the variable pump of power head motor fuel feeding, the second control valve of being connected and this variable pump delivery is regulated with described variable pump.
Preferably, described the second control valve is the electric proportional pressure-reducing valve be connected with described variable pump, described variable pump comprises the adjusting oil circuit that its discharge capacity is regulated, and described electric proportional pressure-reducing valve comprises the oil-in be connected with the oil-out of described variable pump, the oil-out be connected with described adjusting oil circuit and the control end be connected with described controller.
Preferably, described variable pump comprises servo-cylinder and built-in reversal valve, described adjusting oil circuit comprises node A, the Node B be connected with described electric proportional pressure-reducing valve be communicated with the oil-out of described variable pump and the node C be communicated with the rodless cavity of described servo-cylinder, described built-in reversal valve comprises two hydraulic control ends, oil-in and oil return opening, the oil-in of described built-in reversal valve and one of wherein the hydraulic control end with described node A, be connected, wherein another hydraulic control end is connected with described Node B, and its oil return opening is communicated with fuel tank.
Rotary drilling rig pressure control method provided by the invention can be regulated pressurization oil cylinder exerting pressure and pressing speed to unit head automatically, the unbalance loading of the drilling rod that reduction causes because of shock loading and the partial load of drill bit, mast etc., reduce vibration frequency, avoided, because of factors such as artificial error in judgement or operation delay, causing operating mechanism to damage and causing the generation of the person, device security accident because of the part of damage falling from high altitude.
The accompanying drawing explanation
The drill bit construction operation schematic diagram that Fig. 1 is prior art;
Fig. 2 is the stressed schematic diagram of brill tooth in Fig. 1;
Fig. 3 is the rotary drilling rig structural representation;
The left view that Fig. 4 is Fig. 3;
Fig. 5 is rotary drilling rig compression system schematic diagram of the present invention.
Symbol description
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
In the present invention, in the situation that do not do contrary explanation, the noun of locality of use is for the mutual alignment relationship description word between each parts under the rotary drilling rig normal operating conditions as " upper and lower ".
Usually, rotary drilling rig comprises mast 10, left mast oil cylinder 11, right mast oil cylinder 16, drilling rod 50, controls the parts such as master winch (not shown), the arbitrary-movement articulator 30 be connected with drilling rod 50 and unit head 40, the pressurization oil cylinder 20 pressurizeed to unit head 40 and drill bit 60 that drilling rod 50 rises or descends.Revolve and dig driller and refer to the course of work of digging brill of revolving of describing in background technology as process, do not repeat them here.
Refer to Fig. 3 and Fig. 4, mast 10 can be done front, rear, left and right four direction rotation within the specific limits around connecting rotating disk 14, and connect rotating disk 14 and can only transmit power within the specific limits, and can not carry-over moment (moment of torsion or torque).One end of the piston rod of left mast oil cylinder 11, right mast oil cylinder 16 is connected with mast 10, and the other end is connected with the jib lubbing mechanism assembly.When mast 10 does not deflect, left mast oil cylinder 11 is identical with the pressure of the rodless cavity of right mast oil cylinder 16, and pressure difference between the two is zero.Can not carry-over moment owing to connecting rotating disk 14, when the forward and backward torsion of mast 10 or left and right deflection, will cause the wherein cylinder piston rod tension in right mast oil cylinder 16 and left mast oil cylinder 11, and another cylinder piston rod pressurized; The rodless cavity pressure decreased of the oil cylinder of piston rod tension, the rodless cavity pressure of the oil cylinder of piston rod pressurized raises, and finally causes the rodless cavity of right mast oil cylinder 16 and left mast oil cylinder 11 to produce new pressure difference.
The embodiment of the present invention discloses a kind of rotary drilling rig pressure control method, and the method comprises the following steps: the force value of obtaining respectively the rodless cavity of the left mast oil cylinder 11 of described rotary drilling rig and right mast oil cylinder 16; Controller is processed the force value of the rodless cavity of the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16, and obtains the pressure difference of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16; According to the relation between the pressure of rodless cavity of default pressure difference and pressurization oil cylinder 20, control the pressure of pressurization oil cylinder 20 rodless cavities.The invention enables can be according to the pressure difference signal in the rodless cavity that detects left mast oil cylinder 11 and right mast oil cylinder 16, automatically regulate exerting pressure and pressing speed of pressurization 20 pairs of unit heads 40 of oil cylinder, the unbalance loading of the drilling rod 50 that reduction causes because of shock loading and the partial load of drill bit 60, mast 10 etc., reduce vibration frequency, avoided, because of factors such as artificial error in judgement or operation delay, causing operating mechanism to damage and causing the generation of the person, device security accident because of the part of damage falling from high altitude.
It should be noted that, described pressure difference refers to the absolute value of difference of pressure of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16.
Pass between the pressure of the rodless cavity of described pressure difference and pressurization oil cylinder 20 is: described pressure difference becomes large, and the pressure of the rodless cavity of the oil cylinder 20 that pressurizes correspondingly diminishes, and described pressure difference diminishes, and the pressure of the rodless cavity of the oil cylinder 20 that pressurizes correspondingly becomes large.
Further, this pressure control method also comprises according to default pressure difference and is the relation between the discharge capacity of the variable pump 44 of power head motor 42 fuel feeding, the discharge capacity of control variables pump 44.The discharge capacity of variable pump 44 is relevant with the rotating speed of power head motor 42, and the rotating speed of power head motor 42 is relevant with the rotating speed of unit head 40, and the discharge capacity of variable pump 44 is larger, and unit head 40 rotating speeds are larger, and correspondingly, the rotating speed of drill bit 60 is higher.Therefore, can to the discharge capacity of variable pump 44, be controlled according to described pressure difference, making can be according to the pressure difference in the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16, automatically regulate drill bit 60 rotating speeds, reduce shock loading and the partial load of drill bit 60, reduce vibration frequency, avoided, because of factors such as artificial error in judgement or operation delay, causing operating mechanism to damage and causing the generation of the person, device security accident because of the part of damage falling from high altitude.
Described pressure difference and for the pass between the discharge capacity of the variable pump 44 of power head motor 42 fuel feeding be: described pressure difference becomes large, and the discharge capacity of described variable pump 44 correspondingly diminishes, and described pressure difference diminishes, and it is large that the discharge capacity of described variable pump 44 correspondingly becomes.
It should be noted that, controller is according to the relation between the pressure of the rodless cavity of default pressure difference and pressurization oil cylinder 20, control the step of pressure of pressurization oil cylinder 20 rodless cavities and controller according to default pressure difference and be the relation between the discharge capacity of variable pump 44 of power head motor 42 fuel feeding, there is no sequencing between the step of the discharge capacity of control variables pump 44, , it can be first to control after the pressure of rodless cavity of pressurization oil cylinder 20 discharge capacity of control variables pump 44 again that controller is controlled, can be also that controller is controlled the pressure of rodless cavity of pressurization oil cylinder 20 and the discharge capacity of variable pump 44 simultaneously, can also be that controller controls can be the pressure of controlling again the rodless cavity of pressurization oil cylinder 20 after the discharge capacity of first control variables pump 44.
The embodiment of the present invention also discloses a kind of rotary drilling rig pressurizing control system, this system comprises left mast oil cylinder 11, right mast oil cylinder 16 and pressurization oil cylinder 20, also comprise: checkout gear, for detection of the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16; Controller, force value for the rodless cavity of the force value to the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16 is processed, obtain the pressure difference of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16, and, according to the relation between the pressure of default pressure difference and pressurization oil cylinder 20 rodless cavities, control the pressure of pressurization oil cylinder 20 rodless cavities.The present invention detects the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16 automatically by checkout gear, controller is automatically processed the force value of obtaining and is obtained corresponding pressure difference, and automatically control the pressure of pressurization oil cylinder 20 rodless cavities according to this pressure difference, make the pressure process of 20 pairs of unit heads 40 of pressurization oil cylinder automatically control, reliability is high, automaticity is high, greatly reduces equipment operator's labour intensity.
Pass between the pressure of the rodless cavity of described pressure difference and pressurization oil cylinder 20 is: described pressure difference becomes large, and the pressure of the rodless cavity of the oil cylinder 20 that pressurizes correspondingly diminishes, and described pressure difference diminishes, and the pressure of the rodless cavity of the oil cylinder 20 that pressurizes correspondingly becomes large.
Described checkout gear is for detection of the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16, therefore, as long as described checkout gear has detected pressures and the force value of detection is sent to the function of controller, for example, can be but be not limited to the pressure sensor in the present embodiment.Particularly, described checkout gear comprises the first pressure sensor 12 and the second pressure sensor 17, and described the first pressure sensor 12 is connected with the rodless cavity of described left mast oil cylinder 11, for detecting in real time the force value of this rodless cavity; Described the second pressure sensor 17 is connected with the rodless cavity of described right mast oil cylinder 16, for detecting in real time the force value of this rodless cavity.Described the first pressure sensor 12 and the second pressure sensor 17 are sent to controller by the force value of detection, in the present embodiment, on the first pressure sensor 12 and the second pressure sensor 17, also be provided with alarm, when described pressure difference reaches setting value, alarm equipment alarm, alert.
In order to realize the pressure control to the rodless cavity of described pressurization oil cylinder 20, described pressurizing control system also comprises the first control valve that is connected and the pressure of this rodless cavity is controlled with the rodless cavity of described pressurization oil cylinder 20, and described the first control valve comprises a control end be connected with described controller, the oil revolving end be connected with fuel tank, the oil inlet end be communicated with the in-line of described pressurization oil cylinder 20 rodless cavities.Described controller is according to the relation between the pressure of default pressure difference and pressurization oil cylinder 20 rodless cavities, send a control signal to the control end of described the first control valve, described the first control valve is controlled the pressure of the in-line of pressurization oil cylinder 20 rodless cavities according to this control signal.When described pressure difference is larger, hydraulic oil on the in-line of the rodless cavity of increase pressurization oil cylinder 20 enters the flow of fuel tank by this first control valve, make the pressure of the rodless cavity of pressurization oil cylinder 20 reduce, in like manner, when described pressure difference hour, the hydraulic oil that reduces to pressurize on the in-line of rodless cavity of oil cylinder 20 enters the flow of fuel tank by this first control valve, make the pressure of the rodless cavity of pressurization oil cylinder 20 increase.
Be understandable that, this first control valve can be the valve with arbitrary form of above-mentioned functions, for example, can be pile-up valve, overflow valve, in the present embodiment, described the first control valve is electric proportional pressure control valve 24, the oil-in of described electric proportional pressure control valve 24 is connected with the in-line of the rodless cavity of described pressurization oil cylinder 20, the control end of described electric proportional pressure control valve 24 is electrically connected to described controller, this control end is the control end of the first control valve, and the oil-out of described electric proportional pressure control valve 24 is connected with fuel tank.Described controller is according to the relation between the pressure of default pressure difference and pressurization oil cylinder 20 rodless cavities, convert described pressure difference signal to control end that the signal of telecommunication is sent to described electric proportional pressure control valve 24, the spool aperture of described electric proportional pressure control valve 24 and the electric current of its control end are proportional, when described pressure difference is larger, the spool aperture is large, by these electricity proportional pressure control valve 24 overflows, the flow to fuel tank increases hydraulic oil on the in-line of the rodless cavity of corresponding pressurization oil cylinder 20, make the pressure of the rodless cavity of pressurization oil cylinder 20 reduce, cause pressurizeing oil cylinder 20 to unit head 40 and then just less to the moulding pressure of drill bit 60, the speed of pressurization is also less downwards simultaneously, the vibration that unbalance loading produces is just less.In like manner, when described pressure difference hour, the spool aperture is little, by these electricity proportional pressure control valve 24 overflows, the flow to fuel tank reduces hydraulic oil on the in-line of the rodless cavity of corresponding pressurization oil cylinder 20, make the pressure of the rodless cavity of pressurization oil cylinder 20 increase, the oil cylinder 20 that causes pressurizeing is to unit head 40 and then just larger to the moulding pressure of drill bit 60.
Affect drill bit 60 unbalance loadings and vibrative factor except the moulding pressure of pressurization oil cylinder 20, also have the velocity of rotation of unit head 40.Therefore, described pressurizing control system also comprises power head motor 42, is the variable pump 44 of power head motor 42 fuel feeding, the second control valve of being connected and the discharge capacity of this variable pump 44 is controlled with described variable pump 44, and described variable pump 44 comprises the adjusting oil circuit 446 that its discharge capacity is regulated.Controller is according to the relation between the discharge capacity of default pressure difference and variable pump 44, the discharge capacity of regulating described variable pump 44.The discharge capacity of described variable pump 44 changes, make the rotating speed of power head motor 42 change, respective change also can occur in the rotating speed of unit head 40 and drill bit 60, make control system of the present invention to change the rotating speed of unit head 40 and drill bit 60 is regulated automatically according to the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16, reliability is high, automaticity is high, greatly reduces equipment operator's labour intensity.
Described pressure difference and for the pass between the discharge capacity of the variable pump 44 of power head motor 42 fuel feeding be: described pressure difference becomes large, and the discharge capacity of described variable pump 44 correspondingly diminishes, and described pressure difference diminishes, and it is large that the discharge capacity of described variable pump 44 correspondingly becomes.
Be understandable that, this second control valve can be the valve with arbitrary form of above-mentioned functions, for example, can be pile-up valve, overflow valve, reducing valve, in the present embodiment, described the second control valve is preferably electric proportional pressure-reducing valve 46, and electric proportional pressure-reducing valve 46 comprises the oil-in be connected with the oil-out of described variable pump 44, the oil-out be connected with the adjusting oil circuit 446 of described variable pump 44 and the control end be connected with described controller, and this control end is the control end of described the second control valve.
Refer to Fig. 5, the hydraulic schematic diagram that Fig. 5 is the embodiment of the present invention, existing in conjunction with this hydraulic schematic diagram, the course of work of the present invention is described in detail.Described pressurizing control system also is included as described pressurization oil cylinder 20, the hydraulic pump 26 of left mast oil cylinder 11 and right mast oil cylinder 16 fuel feeding, and be separately positioned on described hydraulic pump 26 and pressurization oil cylinder 20, reversal valve 25 between left mast oil cylinder 11 and right mast oil cylinder 16, , on oil circuit between described pressurization oil cylinder 20 and hydraulic pump 26, be provided with reversal valve 25 on oil circuit between left mast oil cylinder 11 and hydraulic pump 26 and on the oil circuit between right mast oil cylinder 16 and hydraulic pump 26, described reversal valve 25 optionally is connected to the hydraulic oil of hydraulic pump 26 outputs rod chamber or the rodless cavity of corresponding oil cylinder.Further, on the oil circuit between the rod chamber of described pressurization oil cylinder 20 and corresponding reversal valve 25, be provided with the first equalizing valve 22, described the first equalizing valve 22 comprises the control port be connected with the rodless cavity of described pressurization oil cylinder 20; Be provided with the second equalizing valve 13, two second equalizing valves 13 on oil circuit between the rod chamber of described left mast oil cylinder 11 and rodless cavity and corresponding reversal valve 25 and there is interlock function; Be provided with the 3rd equalizing valve 18, two second equalizing valves 13 on oil circuit between the rod chamber of described right mast oil cylinder 16 and rodless cavity and corresponding reversal valve 25 and there is interlock function.
Described the first pressure sensor 12 is connected on the rodless cavity and the oil circuit between the second equalizing valve 13 of described left mast oil cylinder 11, and for the force value of the rodless cavity of the described left mast oil cylinder 11 of Real-Time Monitoring, and this force value is sent to controller.Described the second pressure sensor 17 is connected on the rodless cavity and the oil circuit between the 3rd equalizing valve 18 of described right mast oil cylinder 16, and for the force value of the rodless cavity of the described right mast oil cylinder 16 of Real-Time Monitoring, and this force value is sent to controller.
The oil-in of described electric proportional pressure control valve 24 is connected on the rodless cavity and the oil circuit between the first equalizing valve 22 of described pressurization oil cylinder 20, and its oil-out is connected to fuel tank, and its control end is connected to controller.When the pressure difference of the described left mast oil cylinder 11 obtained when controller and the rodless cavity of right mast oil cylinder 16 becomes large, illustrate that drill bit 60 has produced unbalance loading load, controller converts this pressure difference to current value, and this current value is sent to the control end of electric proportional pressure control valve 24, the spool aperture of electricity proportional pressure control valve 24 becomes large, make the pressure in pressurization oil cylinder 20 rodless cavities reduce, and then reduce the moulding pressure of 20 pairs of unit heads 40 of oil cylinder that pressurizes, so that reduce the vibration that drill bit 60 brings because of unbalance loading load.In like manner, when the pressure difference of the described left mast oil cylinder 11 obtained when controller and the rodless cavity of right mast oil cylinder 16 diminishes, illustrate that drill bit 60 unbalance loading load are less, the spool aperture of electricity proportional pressure control valve 24 diminishes, make the pressure in pressurization oil cylinder 20 rodless cavities increase, thereby the suitable moulding pressure that increases by 20 pairs of unit heads 40 of pressurization oil cylinder, drill bit 60 can reasonably crept into operation under pressure.
Further, be provided with selector valve 43 on oil circuit between described variable pump 44 and described power head motor 42, described selector valve 43 optionally is connected to the hydraulic oil of variable pump 44 outputs the opposite end of power head motor 42, makes power head motor 42 forward or reverse.The oil-in of described electric proportional pressure-reducing valve 46 is connected on the oil-out and the oil circuit between described selector valve 43 of described variable pump 44, and the oil-out of described electric proportional pressure-reducing valve 46 is connected on described adjusting oil circuit 446.Particularly, described variable pump 44 comprises built-in swash plate servo-cylinder 440 and built-in reversal valve 442, and described adjusting oil circuit 446 comprises node A, the Node B be connected with described electric proportional pressure-reducing valve 46 and the node C be communicated with the rodless cavity of described servo-cylinder 440 be communicated with the oil-out of described variable pump 44.Described built-in reversal valve 442 comprises two hydraulic control ends, oil-in and oil return opening, the oil-in of described built-in reversal valve 442 and one of wherein the hydraulic control end with described node A, be connected, wherein another hydraulic control end is connected with described Node B, its oil return opening is communicated with fuel tank, the hydraulic control end be connected with described Node B is provided with spring, described Node B and spring force be the aperture to the built-in reversal valve 442 of pressure co-controlling of another hydraulic control end to the pressure of this hydraulic control end and node A, and then control enters the pressure of described node C by node A, control the pressure of the rodless cavity that enters servo-cylinder 440, and then reach the purpose of the discharge capacity of control variables pump 44.In said process, controller is according to the relation between the discharge capacity of default pressure difference and variable pump 44, convert described pressure difference signal to control end that the signal of telecommunication is sent to described electric proportional pressure-reducing valve 46, control end is controlled the aperture of this electricity proportional pressure-reducing valve 46, and then control the pressure of Node B, reach the purpose of the aperture of controlling built-in reversal valve 442.
Below describe by reference to the accompanying drawings a preferred embodiment of the present invention in detail, still, be not limited to the detail in above-mentioned embodiment.In technical conceive scope of the present invention, can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Claims (10)
1. the rotary drilling rig pressure control method, is characterized in that, comprises the following steps:
Obtain respectively the force value of the rodless cavity of the left mast oil cylinder (11) of described rotary drilling rig and right mast oil cylinder (16);
Controller is processed the force value of the rodless cavity of described left mast oil cylinder (11) and the force value of right mast oil cylinder (16) rodless cavity, obtains the pressure difference of the rodless cavity of left mast oil cylinder (11) and right mast oil cylinder (16);
According to the relation between the pressure of rodless cavity of default pressure difference and pressurization oil cylinder (20), control the pressure of pressurization oil cylinder (20) rodless cavity.
2. rotary drilling rig pressure control method as claimed in claim 1, it is characterized in that, further comprising the steps of: according to default pressure difference and be the relation between the discharge capacity of variable pump (44) of power head motor (42) fuel feeding of described rotary drilling rig, the discharge capacity of control variables pump (44).
3. rotary drilling rig pressurizing control system, comprise left mast oil cylinder (11), right mast oil cylinder (16) and pressurization oil cylinder (20), it is characterized in that, described rotary drilling rig pressurizing control system also comprises: checkout gear, for detection of the force value of the rodless cavity of left mast oil cylinder (11) and right mast oil cylinder (16); Controller, force value to the rodless cavity of the force value of the rodless cavity of left mast oil cylinder (11) and right mast oil cylinder (16) is processed, obtain the pressure difference of the rodless cavity of left mast oil cylinder (11) and right mast oil cylinder (16), and, according to the relation between the pressure of default pressure difference and pressurization oil cylinder (20) rodless cavity, control the pressure of the rodless cavity of pressurization oil cylinder (20).
4. rotary drilling rig pressurizing control system as claimed in claim 3, it is characterized in that, described checkout gear comprises the first pressure sensor (12) and the second pressure sensor (17) be connected with the rodless cavity of described left mast oil cylinder (11) and right mast oil cylinder (16) respectively.
5. rotary drilling rig pressurizing control system as claimed in claim 4, is characterized in that, on described the first pressure sensor (12) and the second pressure sensor (17), is provided with alarm; When described pressure difference reaches setting value, described alarm equipment alarm.
6. rotary drilling rig pressurizing control system as claimed in claim 4, it is characterized in that, described system also comprises the first control valve that is connected and the pressure of this rodless cavity is regulated with the rodless cavity of described pressurization oil cylinder (20), described the first control valve comprises a control end be connected with described controller, and described controller is controlled the pressure of the rodless cavity of pressurization oil cylinder by described the first control valve.
7. rotary drilling rig pressurizing control system as claimed in claim 6, it is characterized in that, described the first control valve is electric proportional pressure control valve (24), and described electric proportional pressure control valve (24) comprises and the oil-in be communicated with of described pressurization oil cylinder (20) rodless cavity, the oil-out be communicated with fuel tank and the control end that is electrically connected to described controller.
8. rotary drilling rig pressurizing control system as claimed in claim 3, it is characterized in that, described system also comprises power head motor (42), is the variable pump (44) of power head motor (42) fuel feeding, the second control valve of being connected and the discharge capacity of this variable pump (44) is regulated with described variable pump (44).
9. rotary drilling rig pressurizing control system as claimed in claim 8, it is characterized in that, described the second control valve is the electric proportional pressure-reducing valve (46) be connected with described variable pump (44), described variable pump (44) comprises the adjusting oil circuit (446) that its discharge capacity is regulated, and described electric proportional pressure-reducing valve (46) comprises the oil-in be connected with the oil-out of described variable pump (44), the oil-out be connected with described adjusting oil circuit (446) and the control end be connected with described controller.
10. rotary drilling rig pressurizing control system as claimed in claim 9, it is characterized in that, described variable pump (44) comprises servo-cylinder (440) and built-in reversal valve (442), described adjusting oil circuit (446) comprises the node A be communicated with the oil-out of described variable pump (44), the Node B be connected with described electric proportional pressure-reducing valve (46), and the node C be communicated with the rodless cavity of described servo-cylinder (440), described built-in reversal valve (442) comprises two hydraulic control ends, oil-in and oil return opening, the oil-in of described built-in reversal valve (442) and one of wherein the hydraulic control end with described node A, be connected, wherein another hydraulic control end is connected with described Node B, its oil return opening is communicated with fuel tank.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595273A (en) * | 2015-01-14 | 2015-05-06 | 柳州柳工挖掘机有限公司 | Refined operation hydraulic system of engineering machinery |
| CN106351900A (en) * | 2016-09-27 | 2017-01-25 | 桂林航天工业学院 | Anti-deflection rock drilling control system |
| CN108868739A (en) * | 2018-07-16 | 2018-11-23 | 高邮市恒辉机械有限公司 | A kind of rotary digging driller mast control device |
| CN112065359A (en) * | 2020-09-21 | 2020-12-11 | 北京三一智造科技有限公司 | Drilling control method and rotary drilling rig |
| CN112727435A (en) * | 2020-12-31 | 2021-04-30 | 恒天九五重工有限公司 | Intelligent rock entering control device and method for rotary drilling rig |
| CN114526274A (en) * | 2022-01-18 | 2022-05-24 | 北京三一智造科技有限公司 | Control method of rotary drilling rig, hydraulic system and rotary drilling rig |
| CN115875009A (en) * | 2023-02-06 | 2023-03-31 | 中建隧道装备制造有限公司 | Control method of advanced drilling machine for drilling hard rock |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040069532A1 (en) * | 2002-10-11 | 2004-04-15 | Keast Larry G. | Top drive system |
| CN101892829A (en) * | 2010-06-25 | 2010-11-24 | 北京市三一重机有限公司 | Pressure control method and system for rotary drilling rig |
| CN102392630A (en) * | 2011-10-14 | 2012-03-28 | 上海中联重科桩工机械有限公司 | Rotary drilling rig and control method thereof |
| CN102536189A (en) * | 2012-02-14 | 2012-07-04 | 北京市三一重机有限公司 | Pressurization control method and system for rotary drilling rig |
| CN102937018A (en) * | 2012-10-31 | 2013-02-20 | 中联重科股份有限公司 | Pressurization control method and equipment for full-friction type drill rod and rotary drilling rig |
| CN202850854U (en) * | 2012-11-06 | 2013-04-03 | 湖南奥盛特重工科技有限公司 | Two-stage pressure system for rotary drilling rig |
| CN202970510U (en) * | 2012-12-14 | 2013-06-05 | 上海中联重科桩工机械有限公司 | Mast supporting device and rotary drilling rig |
| CN203430500U (en) * | 2013-08-21 | 2014-02-12 | 上海中联重科桩工机械有限公司 | Pressurization control system of rotary drilling rig |
-
2013
- 2013-08-21 CN CN201310368278.XA patent/CN103437754B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040069532A1 (en) * | 2002-10-11 | 2004-04-15 | Keast Larry G. | Top drive system |
| CN101892829A (en) * | 2010-06-25 | 2010-11-24 | 北京市三一重机有限公司 | Pressure control method and system for rotary drilling rig |
| CN102392630A (en) * | 2011-10-14 | 2012-03-28 | 上海中联重科桩工机械有限公司 | Rotary drilling rig and control method thereof |
| CN102536189A (en) * | 2012-02-14 | 2012-07-04 | 北京市三一重机有限公司 | Pressurization control method and system for rotary drilling rig |
| CN102937018A (en) * | 2012-10-31 | 2013-02-20 | 中联重科股份有限公司 | Pressurization control method and equipment for full-friction type drill rod and rotary drilling rig |
| CN202850854U (en) * | 2012-11-06 | 2013-04-03 | 湖南奥盛特重工科技有限公司 | Two-stage pressure system for rotary drilling rig |
| CN202970510U (en) * | 2012-12-14 | 2013-06-05 | 上海中联重科桩工机械有限公司 | Mast supporting device and rotary drilling rig |
| CN203430500U (en) * | 2013-08-21 | 2014-02-12 | 上海中联重科桩工机械有限公司 | Pressurization control system of rotary drilling rig |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595273A (en) * | 2015-01-14 | 2015-05-06 | 柳州柳工挖掘机有限公司 | Refined operation hydraulic system of engineering machinery |
| CN106351900A (en) * | 2016-09-27 | 2017-01-25 | 桂林航天工业学院 | Anti-deflection rock drilling control system |
| CN106351900B (en) * | 2016-09-27 | 2018-12-18 | 桂林航天工业学院 | A kind of anti-deflection rock drilling control system |
| CN108868739A (en) * | 2018-07-16 | 2018-11-23 | 高邮市恒辉机械有限公司 | A kind of rotary digging driller mast control device |
| CN112065359A (en) * | 2020-09-21 | 2020-12-11 | 北京三一智造科技有限公司 | Drilling control method and rotary drilling rig |
| CN112065359B (en) * | 2020-09-21 | 2023-05-16 | 北京三一智造科技有限公司 | Drilling control method and rotary drilling rig |
| CN112727435A (en) * | 2020-12-31 | 2021-04-30 | 恒天九五重工有限公司 | Intelligent rock entering control device and method for rotary drilling rig |
| CN112727435B (en) * | 2020-12-31 | 2023-09-01 | 恒天九五重工有限公司 | Intelligent rock entering control device and method for rotary drilling rig |
| CN114526274A (en) * | 2022-01-18 | 2022-05-24 | 北京三一智造科技有限公司 | Control method of rotary drilling rig, hydraulic system and rotary drilling rig |
| CN115875009A (en) * | 2023-02-06 | 2023-03-31 | 中建隧道装备制造有限公司 | Control method of advanced drilling machine for drilling hard rock |
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