CN203729285U - Lifting control device of self-elevating drilling platform - Google Patents
Lifting control device of self-elevating drilling platform Download PDFInfo
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- CN203729285U CN203729285U CN201420079173.2U CN201420079173U CN203729285U CN 203729285 U CN203729285 U CN 203729285U CN 201420079173 U CN201420079173 U CN 201420079173U CN 203729285 U CN203729285 U CN 203729285U
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Abstract
The utility model discloses a lifting control device of a self-elevating drilling platform. The lifting control device of the self-elevating drilling platform comprises a lifting motor, a power supply circuit and a control circuit. The lifting motor is mounted on the pile leg of the self-elevating drilling platform and drives a rack on the pile leg to lift the self-elevating drilling platform up and down; the power supply circuit is connected with an external power source and drives the lifting motor after the external power source is processed, and the power supply circuit comprises a pulse transformer, a frequency conversion cabinet group and a motor control cabinet group; the control circuit is communicated with the lifting motor and the power supply circuit and collects the operating signals of the lifting motor and the power supply circuit to control the output of the power supply circuit and further to drive the lifting motor to perform starting, forward rotation, reverse rotation, speed regulation and braking, and the control circuit comprises a central control panel and a local operation station. The lifting control device of the self-elevating drilling platform is compact in structure, efficient, energy-saving and stable in driving, has little impact on the power network of the whole platform and has the advantages of efficient data transmission, high-intelligence control and high synchronization stability.
Description
Technical field
The utility model relates to offshore oil drilling platform field, more particularly, relates to the elevating control technology of self-elevating drilling platform.
Background technology
Self-elevating drilling platform is the capital equipment of marine oil and gas exploration, exploitation.Existing self-elevating drilling platform mostly is motor and drives tooth bar to carry out the lifting action of implementation platform, such platform is made up of three spud legs conventionally, each spud leg comprises three tooth bars, each tooth bar is driven by multiple lifting motors, accordingly, tens lifting motor run-in synchronisms on the control platform of lift control system.
The self-elevating platform up-down system that current drilling platform lifting system manufacturer in the world manufactures is essentially single velocity mode, and tens lifting motors are with similarly speed operation.On Theoretical Design, tens lifting motor synchronous operations can realize the synchronization lifting of tooth bar and spud leg.But in the situation of practical application; because the running environment of each spud leg, each tooth bar and each lifting motor is different; single velocity mode cannot be realized unified lifting; usually can cause that the height in tooth bar and spud leg lifting process is inconsistent, thereby can not adapt to the high request technical performance of spud leg lifting.And lifting load can not adapt to the requirement that self-elevating drilling platform load constantly increases, therefore the Synchronization Control effect of motor is poor, affects the safety and reliability of jacking system.
So just need a kind of technology that can control lifting motor to safety and reliability.
Utility model content
The utility model is intended to propose a kind of self-elevating drilling platform Hoist Control Unit, comprising: lifting motor, current supply circuit and control loop.Lifting motor is arranged on the spud leg of self-elevating drilling platform, and lifting motor drives the rack drives self-elevating drilling platform lifting on spud leg.Current supply circuit is connected to external power supply, external power supply is processed to rear drive lifting motor, current supply circuit comprises pulse transformer, frequency conversion group and Electric Machine Control group, and the primary side of pulse transformer is connected to external power supply, and the secondary side of pulse transformer is connected to frequency conversion group; The output of frequency conversion group received pulse transformer, the output of pulse transformer is carried out exporting after rectification, inversion and frequency conversion; Electric Machine Control group receives the output of frequency conversion group, and the output of Electric Machine Control group is connected to lifting motor to drive lifting motor.Control loop and lifting motor and current supply circuit communication, gather the run signal of lifting motor and current supply circuit, control the output of current supply circuit lifting motor start to drive, forward running, antiport, speed governing and braking, control loop comprises central control console and local operation station, central control console and lifting motor and the communication of Electric Machine Control group, gather the run signal of lifting motor, produce control instruction and send to frequency conversion group and Electric Machine Control group to control the output of current supply circuit; Local operation station and Electric Machine Control group and central control console communication, local operation station and central control console carry out interlocked operation, or local operation station is to the output of motor operation group output local operation instruction control current supply circuit.
In one embodiment, this self-elevating drilling platform Hoist Control Unit also comprises position coder and speed probe.Position coder is arranged on spud leg, and position coder gathers altitude signal, position coder and central control console and the communication of local operation station.Speed probe is arranged on lifting motor, and speed probe gathers the tach signal of lifting motor, speed probe and central control console communication, and speed probe is also connected to frequency conversion group, and speed probe comprises rotating speed coder and overspeed switch.
In one embodiment, pulse transformer is 12 pulsating wave or 24 pulse wave transformers, and the secondary side of pulse transformer forms four tunnel outputs.
In one embodiment, this self-elevating drilling platform Hoist Control Unit also comprises braking resistor box.Frequency conversion group comprises four isolating switches, and each isolating switch is independently connected to the secondary side Yi road output of pulse transformer.Frequency conversion group comprises rectification unit, inversion unit, brake unit and coding unit; Brake unit is connected to braking resistor box; Coding unit is connected to the rotating speed coder in speed probe.
In one embodiment, central control console comprises interactive device, main station controller and communication module.Interactive device receives interactive instruction, and main station controller produces control instruction according to interactive instruction and run signal, and communication module receives run signal sending controling instruction.
In one embodiment, central control console also comprises electrical tilt instrument, and electrical tilt instrument detects the gradient of self-elevating drilling platform, in the time that gradient reaches default alarming value, gives the alarm.
In one embodiment, local operation station comprises local load transfer operation device and local side of a ship deviation leveling operator, local side of a ship deviation leveling operator and position coder communication, the altitude signal that local side of a ship deviation leveling operator display position encoder gathers.
In one embodiment, Electric Machine Control group comprises motor controlling cabinet and slave station switch board; Motor controlling cabinet receives the output of frequency conversion group, and the output of motor controlling cabinet is connected to lifting motor, and motor controlling cabinet is by slave station switch board and central control console and the communication of local operation station.
In one embodiment, lifting motor is slippage variable-frequency motor, and input connects Electric Machine Control group, and output connects lifting tooth roller box power transmission shaft to drive tooth bar.
The operational factor of each lifting motor of self-elevating drilling platform Hoist Control Unit Real-time Collection of the present utility model and spud leg, independently adjusts in real time to each lifting motor, thereby realizes the real-time stabilization control of the lifting process of whole platform.Whole Hoist Control Unit compact conformation, energy-efficient, smooth drive, impacts minimum to whole platform electrical network.Possesses the feature of efficient data transmission, high-intelligentization control, the high stability of synchronization.
Brief description of the drawings
The above and other feature of the utility model, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and identical Reference numeral represents identical feature all the time in the accompanying drawings, wherein:
Fig. 1 has disclosed according to the structure chart of the self-elevating drilling platform Hoist Control Unit of an embodiment of the present utility model.
Detailed description of the invention
The utility model is intended to the self-elevating drilling platform Hoist Control Unit of the operation, demonstration and the warning that propose a kind of energy high concentration, large for solve that existing lifting system of self-lifting well drilling platform exists platform electrical network is impacted, control system security risk is large, move jiggly problem.
Self-elevating drilling platform is many drives tooth bar to carry out the lifting action of implementation platform by lifting motor, most platform comprises three spud legs, on each spud leg, there are three tooth bars, each tooth bar is driven by six lifting motors, and this self-elevating drilling platform Hoist Control Unit is controlled 54 lifting motors (18 lifting motors of every spud leg) run-in synchronism on platform simultaneously accordingly.Consider from the angle of safety and stablization, this self-elevating drilling platform Hoist Control Unit need to ensure that 54 gear-boxes are stressed evenly, accurately control the height of spud leg and tooth bar simultaneously, platform horizontal tilt degree, tightly keep under strict control and the various parameters such as the power of warning all lifting motors, load, voltage, electric current, frequency, rotating speed, and realize startup, rotating and the braking of the safety and steady of lifting motor.
Shown in figure 1, the utility model proposes a kind of self-elevating drilling platform Hoist Control Unit, comprising: lifting motor, current supply circuit and control loop.
Lifting motor 109 is arranged on the spud leg of self-elevating drilling platform, and lifting motor 109 drives the rack drives self-elevating drilling platform lifting on spud leg.
Current supply circuit is connected to external power supply, and external power supply is processed to rear drive lifting motor.Current supply circuit comprises pulse transformer 101, frequency conversion group 103 and Electric Machine Control group 106.The primary side of pulse transformer 101 is connected to external power supply, and the secondary side of pulse transformer 101 is connected to frequency conversion group 103.The output of frequency conversion group 103 received pulse transformers 101, the output of pulse transformer is carried out exporting after rectification, inversion and frequency conversion.Electric Machine Control group 106 receives the output of frequency conversion group 103, and the output of Electric Machine Control group 106 is connected to lifting motor 109 to drive lifting motor.
Control loop and lifting motor and current supply circuit communication, gather the run signal of lifting motor and current supply circuit, controls the output of current supply circuit lifting motor starts to drive, forward running, antiport, speed governing and braking.Control loop comprises central control console 105 and local operation station 107.Central control console 105 and lifting motor 109 and 106 communications of Electric Machine Control group, the run signal of collection lifting motor, produces control instruction and sends to frequency conversion group and Electric Machine Control group to control the output of current supply circuit.Local operation station 107 and Electric Machine Control group 106 and central control console 105 communications, interlocked operation is carried out with central control console 105 in local operation station 107, or the output of local operation instruction control current supply circuit is exported at local operation station 107 to motor operation group 106.
Continue with reference to the embodiment shown in figure 1, this self-elevating drilling platform Hoist Control Unit also comprises position coder 108 and speed probe 104.Position coder 108 is arranged on spud leg, and position coder gathers altitude signal, position coder and central control console 105 and 107 communications of local operation station.Speed probe 104 is arranged on lifting motor, speed probe 104 gathers the tach signal of lifting motor, speed probe and central control console 105 communications, speed probe 104 is also connected to frequency conversion group 103, and speed probe 104 comprises overspeed switch 141 and rotating speed coder 142.
In the embodiment shown in fig. 1, pulse transformer 101 is 12 pulsating wave or 24 pulse wave transformers, and the secondary side of pulse transformer 101 forms four tunnel outputs, and four tunnel outputs independently enter the isolating switch of frequency conversion group 103.Pulse transformer 101 connects external power supply, and such as connecting hull generator distribution and frequency conversion tank, pulse transformer 101 can at utmost suppress harmonic wave.
Frequency conversion group 103 comprises four isolating switches, and each isolating switch is independently connected to the secondary side Yi road output of pulse transformer 101.Frequency conversion group 103 is dc bus type frequency converters.Frequency conversion group 103 comprises rectification unit 131, inversion unit 132, brake unit 133 and coding unit 134.Brake unit 133 is connected to braking resistor box 102.Braking resistor box 102 provides braking resistor, is also a part for self-elevating drilling platform Hoist Control Unit.In the time that this self-elevating drilling platform declines, lifting motor reversion, need to be discharged into power in the braking resistor of brake unit 133 and braking resistor box 102 to absorb and to consume the energy of motor generation.The output-current rating of frequency conversion group 103 can overlap synchronizing motors by spud leg of parallel drive 18, completes rise/fall action.Frequency conversion group 103 connects central control console 105 by DP-PROFIBUS communication.Central control console 105 can be monitored the duty of frequency conversion group 103 in real time, collects the operational factor of frequency conversion group 103.Central control console 105 also can send relevant control instruction to frequency conversion group 103 simultaneously, drives corresponding lifting motor 109 to carry out various runnings by frequency conversion group 103.Coding unit 134 is connected to the rotating speed coder 142 in speed probe 104.
Speed probe 104 is arranged on spud leg, and two speed probes 104 are installed on each spud leg.Each speed probe 104 comprises overspeed switch 141 and rotating speed coder 142.Overspeed switch 141 is connected to hardware connection mode in the start-up circuit of major loop; in running; the switching value signal of monitoring overspeed switch 141 in real time; if lifting motor rotating speed exceedes the setting value of overspeed switch 141 in platform declines; enter mechanical parking protection at once; cutting system main circuit power, lifting motor brake dead electricity band-type brake, lifting motor 109 is by locked.Rotating speed coder 142 is connected to the coding unit 134 of frequency conversion group 103, in real time the value of feedback of monitoring rotation speed encoder 142.After the brake of motor is opened, if when the deviation of the value of feedback of rotating speed coder 142 and frequency conversion group 103 output valves is greater than setting value, system is electric parking at once, brake band-type brake.The speed probe 104 with overspeed switch 141 is placed in lifting motor side; detect in real time lifting motor rotating speed; and greatly reduce the downside risk of platform by the setting value of overspeed switch; rising or falling speed has been carried out to real-time monitoring; when finding that there is any hypervelocity phenomenon, system will be forced the operation of lifting ship immediately, make motor brake dead electricity simultaneously; lifting motor is locked, thus protecting platform lift work safety to the full extent.
Central control console 105 is control cores of this self-elevating drilling platform Hoist Control Unit, and central control console 105 comprises interactive device 151, main station controller 152, communication module 153 and electrical tilt instrument 154.Interactive device 151 provides man-machine interface, receives interactive instruction.Main station controller 152 produces control instruction according to interactive instruction and run signal, and main station controller 152 can also interlock with local operation station 107.Under interlocking state, the local instruction ignore at local operation station 107, directly carries out the instruction of main station controller 152.Removing under the state of interlocking, carry out the instruction at local operation station 107.Communication module 153 receives from the run signal of all parts sending controling instruction.Electrical tilt instrument 154 detects the gradient of self-elevating drilling platform, in the time that gradient reaches default alarming value, gives the alarm.
By interactive device 151, central control console 105 can be realized the selection of operator scheme, and central control console 105 and local operation station 107 are interlocked or remove interlocking, can only select a kind of mode of operation wherein at synchronization.Can also adjust three tooth bar height of spud leg by tooth bar selector switch by interactive device 151 central control consoles 105.On the whole, central control console 105 can be realized by interactive device 151 needed control operation, demonstration, report to the police, stop in emergency, the function such as parameter arranges.
Main station controller 152 gathers the operational factor of whole self-elevating drilling platform Hoist Control Unit by communication module 153.Main station controller 152 is realized the acquisition process of input and output (IO) module input signal and computing and the control of output signal, export corresponding control instruction and send to frequency conversion group 103 and Electric Machine Control group 106 by communication module 153, thereby realize the control of lift work and relevant parameter is carried out to operation monitoring.Interactive device 151 is connected by Ethernet with main station controller 152, realizes quick interactive transmission of data.Interactive device 151 passes to main station controller 152 by the parameters of system and carries out the operation control of system, receive all operations information, warning message, fault message of the system that main station controller 152 exports etc. simultaneously, realize effective historical data playback and record, operator's operation under can complete documentation, and sequence of operations fault and state, realize the monitoring of all secure datas of the each spud leg to platform, and design multiple hommization operation screen and realize highly reliable, omnibearing automation man-machine interaction.Interactive device 151 is also furnished with uninterrupted power supply (ups) Unity management system, and can guarantee in platform dead electricity situation still can record data a few hours, thereby can go into effect and the effect of black box.
The utility model provides the load distribution operator scheme of lifting motor 109 on also on interactive device 151, select the spud leg that will adjust by screen, side of a ship pipe, and single lifting motor 109, man-machine interface by interactive device 151 is set the load value that will reach, then press RETORQUE button, selected motor contactor closure, to adjust the motor of load by the independent connection of frequency converter, discharge corresponding brake, reach and set value or do not arrive and set torque value and automatically stop after moving five seconds until this Motor torque, electric rotating machine is to predetermined load backed off after random (real load of motor be by the automatic measurement and calculation of vector units of frequency converter).Set torque value if do not reach expection, can again move, as reach expection torque value, can select the operation of next motor, by that analogy, till making all motors all remain in the permissible range of same torque value, moment of torsion reallocation has operated.
Carry out lifting ship and cause dangerous generation when preventing platform inclination, in central control console 105, electrical tilt instrument 154 being also set and coming the tilt condition of detection platform.In the time that the gradient of platform reaches default alarming value, system can be sent audible and visible alarm and warn behaviour's ship person; In the time that the gradient of platform has reached default tilt boundary value, system can stop the operation of lifting ship immediately.The gradient of platform has reached after default tilt boundary value, just can carry out the lifting ship operation of this spud leg while only having operator scheme on central control console 105 to choose OVERRIDE pattern, and can only be towards by the direction operation of platform erection.
In the embodiment shown in fig. 1, Electric Machine Control group 106 comprises motor controlling cabinet 161 and slave station switch board 162.Motor controlling cabinet 161 receives the output of frequency conversion group 103, and the output of motor controlling cabinet 161 is connected to lifting motor 109, and motor controlling cabinet 161 is by slave station switch board 162 and central control console 105 and 107 communications of local operation station.The major loop input of motor controlling cabinet 161 connects the major loop output of frequency conversion group 103; the output of motor controlling cabinet 161 connects lifting motor 109; motor controlling cabinet 161 has control circuit, comprises the various control and protection devices such as switch, contactor of controlling corresponding lifting motor 109 switch, contactor and the brake that start.Be connected to frequency conversion group 103, central control console 105 and local operation station 107 from station control 162 by redundancy communication mode, realize real-time transfer of data.In normal control, Electric Machine Control group 106 receives the corresponding control instruction automatically at central control console 105 or local operation station 107, and each element just has corresponding action, realizes startup, rotating, speed governing and the braking of lifting motor 109.The order that brake is opened will detect output frequency by frequency conversion group 103, and meet in the situation of logical condition and discharge.
In the embodiment shown in fig. 1, local operation station 107 comprises local load transfer operation device 171 and local side of a ship deviation leveling operator 172.Local side of a ship deviation leveling operator 172 and position coder communication 108, the altitude signal that local side of a ship deviation leveling operator 172 display position encoders 108 gather.The sensor signal at each spud leg scene is responsible for gathering in local operation station 107, can be distributed three of place spud leg tooth bars are finely tuned to operation by the button on local operation station 107 simultaneously.The local operation station 107 of every spud leg comprises three local load transfer operation devices (LCC-LT) 171 and a local side of a ship deviation leveling control box (LCC-RPD) 172.In the operator scheme transmitting, when operator need to, by load when lifting system is delivered to fastening system, need to pulls the manual releasing action bars of each brake and open whole brakes, waste time and energy and have certain danger.The utility model adopts the control button of local load transfer operation device 171 to realize brake opening function, realize electric automatization control, can not only realize load and be delivered to fastening system from lifting system, also provide and can realize the transmission of load from fastening system to lifting system by inverse operation, very convenient operator, and there is very high security.In the process of opening locking device and input locking device, need load to regulate, now central control console 105 is removed interlocking pattern with local operation station 107, carry out local operation by local operation station 107, now can only use local load transfer operation device (LCC-LT) 171 separately each string pipe to be regulated, press rising and decline button transfer load to locking device.Can set up defences to single brake in addition, so that the moment of torsion of the single gear of mechanical adjustment.
In traditional operator scheme, the leveling of side of a ship deviation be all operator manually with the height of the every toothed rack of dipstick metering, then calculating mean value, adjusts the height of every toothed rack accordingly.Lift control system of the present utility model is gathered the elevation information of each tooth bar and is input to central control console 105 by the position coder 108 being arranged in every toothed rack, then export height value and show to local side of a ship deviation leveling controller (LCC-RPD) 172, operator can carry out tooth bar height leveling operation by the control button on local side of a ship deviation leveling operator (LCC-RPD) 172 easily and fast according to this elevation information.In the time that the RPD of platform value reaches default alarming value, system can be sent audible and visible alarm and warn behaviour's ship person; In the time that the RPD of spud leg has reached default maximum limit, system can stop the operation of lifting ship immediately.After RPD value has reached default limiting value, while only having operator scheme on central control console 105 to choose OVERRIDE pattern, just can carry out the lifting ship operation of certain side of a ship of this spud leg, and can only be towards the direction operation that RPD value is diminished.Can, according to the value of position coder 108, carry out the movement travel of moment monitor supervision platform simultaneously, in software program, set alarming value and the limiting value of platform rise/fall.In the time reaching high limit warning/lower bound alarming value in the process of hull rise/fall, system can be sent audible and visible alarm and warn behaviour's ship person.In the time that the rise/fall of platform has reached default limiting value, system can stop the operation of lifting ship immediately.
In the embodiment shown in fig. 1, lifting motor 109 is slippage variable-frequency motors, and input connects Electric Machine Control group 106, and output connects lifting tooth roller box power transmission shaft to drive tooth bar.Slippage variable-frequency motor can be adjusted rotating speed in real time according to actual conditions, thereby can adopt different speed in the time of lifting offshore boring island and lifting spud leg.In the time of lift work, all lifting motors 109 of single spud leg be all simultaneously electric operation.Only have when system detect all effective lifting motors 109 all electric and electric current has all reached after rated current, the electromotor brake of this spud leg just can be opened simultaneously.And interior to have increased rigid line chain at Electric Machine Control group 106, even in the situation that breaking down, the main contactor of lifting motor 109 is not closed, and brake control loop cannot be switched on, and prevent from braking and opening in the time that motor is not worked.The temperature of winding in special temperature control module tracking motor has all been installed in lifting motor 109 inside, and in software, be provided with warning and turn-off two kinds of protected modes.For motor overload, in software, also have and report to the police and turn-off two kinds of protected modes.In the time that motor slightly overloads, system can be sounded and visual alarm, reminds the existence of behaviour's ship personnel fault.Larger at overcurrent numerical value, while exceeding the high restriction of height of setting, jacking system can stop automatically, reminds operating personnel to carry out trouble hunting.
The self-elevating drilling platform Hoist Control Unit the utility model proposes meets the category of up-to-date IEC and the design standard requirement of ABS classification society completely, adopt two Redundant Control modes, realize the interlocked operation mode of operated from a distance and local operation, when in the situation that central control console lost efficacy, local operation station can provide emergent lift capability.The operation of jacking system can select central control console operation and local operation station to carry out the descending operation of platform.Wherein pulse transformer is placed in offshore boring island generator room, and frequency conversion group and Electric Machine Control group are placed in the electrical house of offshore boring island cabin, and braking resistor box can be placed on offshore boring island deck and also can be placed in platform machine cabin.Lifting motor is placed on the gear-box connecting axle of spud leg lifting gear, and output torque drives lifting platform, is placed in lifting motor side with the speed probe of overspeed switch, detects the rotation rotating speed of lifting motor.Central control console is placed in the jacking system control room of platform, local operation station is placed on lifting platform spud leg annex, be used for the local operation of implementation platform lifting, be used for gathering spud leg position coder signal simultaneously, adjust in time three tooth bar positions in each spud leg.Whole control system adopts redundancy communication grid, and critical system tightly stops emergent parts and adopts hardware connection mode, realizes mechanical parking function, better protects whole jacking system mechanical device and operating personnel's personal safety.
Self-elevating drilling platform Hoist Control Unit of the present utility model adopts the annular communication network of DP-PROFIBUS and optical fiber composition, realize high-speed remote from communication, the system that ensured realizes Millisecond response, greatly reduce because the system failure causing is blocked in communication, improved stability and the safety of system.Meanwhile, this annular communication network is made up of two identical major-minor lattice chains, and every identical Redundant backup CPU of lattice chain the inside outfit, thereby has formed an intelligent hot backup redundancy system.This system can realize when master network chain occur physical fault (as broken string, terminal damage etc.) or software fault (as communication block, network address mistake etc.) in situation, system automatically switches to secondary lattice chain, thus guarantee system runs without interruption and powerful fault-tolerance.This research has realized communication redundancy completely by the test experiments of our factory, also comprises driver communication redundancy.
The utility model makes full use of the feature of software and hardware architecture, realizes protection at many levels, greatly strengthens emergency capability, and effectively improves the mechanical device life-span.This protection system can be divided into the protection of mechanical parking and electric parking.Under mechanical parking means, the contactor of all motors cuts off, motor freedom of entry dead ship condition, meanwhile, all brakes band-type brake immediately.Electric parking means and do not meet when certain condition, and frequency conversion group enters deceleration-stop phase automatically, and frequency conversion group output frequency is lower than when setting value, and brake is band-type brake immediately.This protection system is closed-loop control system, and control accuracy is high, and safety is good.Other capital equipments are monitored and protection as brake, contactor, main service entrance switch etc. have.
The operational factor of each lifting motor of self-elevating drilling platform Hoist Control Unit Real-time Collection of the present utility model and spud leg, independently adjusts in real time to each lifting motor, thereby realizes the real-time stabilization control of the lifting process of whole platform.Whole Hoist Control Unit compact conformation, energy-efficient, smooth drive, impacts minimum to whole platform electrical network.Possesses the feature of efficient data transmission, high-intelligentization control, the high stability of synchronization.
Above-described embodiment is available to be familiar with person in the art and to realize or use of the present utility model; those skilled in the art can make various modifications or variation and not depart from utility model thought of the present utility model above-described embodiment; thereby protection domain of the present utility model do not limit by above-described embodiment, and it should be the maximum magnitude that meets the inventive features that claims mention.
Claims (9)
1. a self-elevating drilling platform Hoist Control Unit, is characterized in that, comprising:
Lifting motor, lifting motor is arranged on the spud leg of self-elevating drilling platform, and lifting motor drives the rack drives self-elevating drilling platform lifting on spud leg;
Current supply circuit, current supply circuit is connected to external power supply, and external power supply is processed to rear drive lifting motor, and described current supply circuit comprises pulse transformer, frequency conversion group and Electric Machine Control group,
The primary side of pulse transformer is connected to external power supply, and the secondary side of pulse transformer is connected to frequency conversion group;
The output of frequency conversion group received pulse transformer, the output of pulse transformer is carried out exporting after rectification, inversion and frequency conversion;
Electric Machine Control group receives the output of frequency conversion group, and the output of Electric Machine Control group is connected to lifting motor to drive lifting motor;
Control loop, control loop and lifting motor and current supply circuit communication, gather the run signal of lifting motor and current supply circuit, control the output of current supply circuit lifting motor start to drive, forward running, antiport, speed governing and braking, described control loop comprises central control console and local operation station
Central control console and lifting motor and the communication of Electric Machine Control group, the run signal of collection lifting motor, produces control instruction and sends to frequency conversion group and Electric Machine Control group to control the output of current supply circuit;
Local operation station and Electric Machine Control group and central control console communication, local operation station and central control console carry out interlocked operation, or local operation station is to the output of motor operation group output local operation instruction control current supply circuit.
2. self-elevating drilling platform Hoist Control Unit as claimed in claim 1, is characterized in that, also comprises:
Position coder, is arranged on spud leg, and position coder gathers altitude signal, position coder and central control console and the communication of local operation station;
Speed probe, is arranged on lifting motor, and speed probe gathers the tach signal of lifting motor, speed probe and central control console communication, and speed probe is also connected to frequency conversion group, and described speed probe comprises rotating speed coder and overspeed switch.
3. self-elevating drilling platform Hoist Control Unit as claimed in claim 2, is characterized in that, described pulse transformer is 12 pulsating wave or 24 pulse wave transformers, and the secondary side of pulse transformer forms four tunnel outputs.
4. self-elevating drilling platform Hoist Control Unit as claimed in claim 3, is characterized in that, also comprises braking resistor box;
Described frequency conversion group comprises four isolating switches, and each isolating switch is independently connected to the secondary side Yi road output of pulse transformer;
Described frequency conversion group comprises rectification unit, inversion unit, brake unit and coding unit; Described brake unit is connected to braking resistor box; Described coding unit is connected to the rotating speed coder in speed probe.
5. self-elevating drilling platform Hoist Control Unit as claimed in claim 4, is characterized in that, described central control console comprises interactive device, main station controller and communication module;
Interactive device receives interactive instruction, and main station controller produces control instruction according to interactive instruction and run signal, and communication module receives run signal sending controling instruction.
6. self-elevating drilling platform Hoist Control Unit as claimed in claim 5, it is characterized in that, described central control console also comprises electrical tilt instrument, and electrical tilt instrument detects the gradient of self-elevating drilling platform, in the time that gradient reaches default alarming value, gives the alarm.
7. self-elevating drilling platform Hoist Control Unit as claimed in claim 5, is characterized in that, described local operation station comprises local load transfer operation device and local side of a ship deviation leveling operator,
Described local side of a ship deviation leveling operator and position coder communication, the altitude signal that local side of a ship deviation leveling operator display position encoder gathers.
8. self-elevating drilling platform Hoist Control Unit as claimed in claim 7, is characterized in that, described Electric Machine Control group comprises motor controlling cabinet and slave station switch board;
Motor controlling cabinet receives the output of frequency conversion group, and the output of motor controlling cabinet is connected to lifting motor, and motor controlling cabinet is by slave station switch board and central control console and the communication of local operation station.
9. self-elevating drilling platform Hoist Control Unit as claimed in claim 8, is characterized in that, described lifting motor is slippage variable-frequency motor, and input connects Electric Machine Control group, and output connects lifting tooth roller box power transmission shaft to drive tooth bar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420079173.2U CN203729285U (en) | 2014-02-24 | 2014-02-24 | Lifting control device of self-elevating drilling platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420079173.2U CN203729285U (en) | 2014-02-24 | 2014-02-24 | Lifting control device of self-elevating drilling platform |
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| CN203729285U true CN203729285U (en) | 2014-07-23 |
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| CN201420079173.2U Expired - Lifetime CN203729285U (en) | 2014-02-24 | 2014-02-24 | Lifting control device of self-elevating drilling platform |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106013031A (en) * | 2016-07-04 | 2016-10-12 | 太原重工股份有限公司 | Marine drilling platform and lifting device of marine drilling platform |
| CN106192964A (en) * | 2016-08-01 | 2016-12-07 | 上海衡拓船舶设备有限公司 | Jacking system load is reallocated technical method online |
| CN107460860A (en) * | 2017-07-31 | 2017-12-12 | 中国石油集团渤海石油装备制造有限公司 | A kind of electric control gear of marine drilling platform pile leg locking system |
| CN109763472A (en) * | 2019-03-14 | 2019-05-17 | 天津海科信达石油技术有限公司 | Lifting self-elevating platform control system |
| CN114460896A (en) * | 2022-01-11 | 2022-05-10 | 首钢京唐钢铁联合有限责任公司 | Lifting control device and method for steelmaking desulfurization stirring head |
| CN114953413A (en) * | 2022-05-11 | 2022-08-30 | 南京苏曼等离子科技有限公司 | Intelligent jet plasma treatment roller inner wall equipment |
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2014
- 2014-02-24 CN CN201420079173.2U patent/CN203729285U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013031A (en) * | 2016-07-04 | 2016-10-12 | 太原重工股份有限公司 | Marine drilling platform and lifting device of marine drilling platform |
| CN106013031B (en) * | 2016-07-04 | 2018-05-08 | 太原重工股份有限公司 | The lifting gear of marine drilling platform and marine drilling platform |
| CN106192964A (en) * | 2016-08-01 | 2016-12-07 | 上海衡拓船舶设备有限公司 | Jacking system load is reallocated technical method online |
| CN107460860A (en) * | 2017-07-31 | 2017-12-12 | 中国石油集团渤海石油装备制造有限公司 | A kind of electric control gear of marine drilling platform pile leg locking system |
| CN107460860B (en) * | 2017-07-31 | 2021-04-09 | 中国石油集团渤海石油装备制造有限公司 | Electric control device of pile leg locking system of offshore drilling platform |
| CN109763472A (en) * | 2019-03-14 | 2019-05-17 | 天津海科信达石油技术有限公司 | Lifting self-elevating platform control system |
| CN109763472B (en) * | 2019-03-14 | 2023-08-18 | 天津海科信达石油技术有限公司 | Lifting control system of self-elevating platform |
| CN114460896A (en) * | 2022-01-11 | 2022-05-10 | 首钢京唐钢铁联合有限责任公司 | Lifting control device and method for steelmaking desulfurization stirring head |
| CN114953413A (en) * | 2022-05-11 | 2022-08-30 | 南京苏曼等离子科技有限公司 | Intelligent jet plasma treatment roller inner wall equipment |
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