CN205534829U - A variable -frequency driving system for detector drawbar test in submarine pipeline - Google Patents

Abstract

The utility model provides a variable -frequency driving system for detector drawbar test in submarine pipeline, including dc bus, pulling winch frequency conversion drive unit and return stroke winch frequency conversion drive unit, pulling winch frequency conversion drive unit with the frequency conversion of return stroke winch drive unit parallel connection be in the dc bus. The advantage does: each frequency conversion drive unit is parallelly connected to the dc bus, consequently, work generating state's mechanism with electric energy feedback to the dc bus, the mechanism at electronic state consumes it by work, not only energy -concerving and environment -protective but also improved the utilization ratio of system's electric energy, has avoided the radiating problem of brake resistance.

Description

The frequency changing driving system of detector pulling test in submarine pipeline

Technical field

This utility model belongs to detector pulling test technical field, is specifically related to a kind of frequency changing driving system of detector pulling test in submarine pipeline.

Background technology

Along with deeply developing of marine oil field, pipeline under the ocean gets more and more.How buried submarine pipeline is in the sandy soil of seabed, affected bigger by marine environment etc., likely clashed into by marine floating thing or boats and ships etc. and damage, it is likely to cause the serious accidents such as perforation and booster because of reasons such as corrosive pipelines, so that submarine pipeline leaks, severe contamination is caused in ocean by submarine pipeline leakage, directly affect marine industries and coastal resident living, therefore, the safety of submarine pipeline becomes affects offshore and gas development, the normal very important problem produced of safety, receives increasing attention.In order to ensure the properly functioning of submarine pipeline, improve the safety of offshore and gas development, need submarine pipeline life overall process various piece is carried out periodic detection, accurately understand pipeline situation, take effective measures early, avoid the generation of pipeline accident, run for pipe safety, safeguard and offer scientific basis is provided.

Conventional Technique of Subsea Pipeline Inspection method is detection method in pipe, that is: interior detector is while moving with pumped (conveying) medium in pipeline, and detection collection pipeline defect information also stores, after having detected, by the defect information of computer analyzing and positioning record, to grasp the state of pipeline.

For oil, natural-gas transfer pipeline, conventional interior detection method has intelligent pig (smartPig), Magnetic Flux Leakage Inspecting method, detection method of eddy, ultrasonic detection technology, electromagnetic wave sensing detection technology (EMAT) etc..But, above-mentioned detection method, its Detection results is all affected by speed effect, therefore, in order to improve the accuracy of detection of in-pipeline detector, needs to control its migration velocity in the reasonable scope.

After Technique of Subsea Pipeline Inspection instrument has been researched and developed, if directly carrying out on-the-spot test, there is the problem that on-the-spot experimentation cost is high and danger coefficient is big, easily cause device damage.Therefore, after in submarine pipeline, detector development completes, need to be simulated testing in terrestrial pipeline, thus detector performance in studying submarine pipeline.

But, detector assay device in existing submarine pipeline, generally there is following deficiency:

In existing submarine pipeline, detector assay device relates to two drivers, each driver uses independent power supply, when the servomotor that driver is connected is in generating state, by braking resistor, the power consumption that servomotor produces is fallen, waste electric energy, there is the problem that system power utilization rate is low.

Utility model content

The defect existed for prior art, this utility model provides a kind of frequency changing driving system of detector pulling test in submarine pipeline, can effectively solve the problems referred to above.

The technical solution adopted in the utility model is as follows:

This utility model provides a kind of frequency changing driving system of detector pulling test in submarine pipeline, including dc bus, pulling winch variable frequency drive unit and backhaul winch variable frequency drive unit；Described pulling winch variable frequency drive unit and described backhaul winch variable frequency drive unit are connected in parallel on described dc bus；

Described pulling winch variable frequency drive unit and described backhaul winch variable frequency drive unit all include: commutator, inverter, brake unit and braking resistor；

The input of described commutator is connected on dc bus, and the outfan of described commutator is connected to the input of described inverter, and the outfan of described inverter is connected on winch servomotor；

One end of described brake unit is parallel-connected on dc bus, and the other end of described brake unit is connected with described braking resistor.

Preferably, described commutator is provided with reactor between described dc bus.

The frequency changing driving system of detector pulling test in submarine pipeline that this utility model provides has the advantage that

Each variable frequency drive unit common DC bus, therefore, it is operated in the mechanism of generating state by back electrical energy to dc bus, consumed by the mechanism being operated in motoring condition, not only energy-conserving and environment-protective but also improve the utilization rate of system power, decrease the investment of braking resistor, it is to avoid the problem of braking resistor heat radiation simultaneously.

Accompanying drawing explanation

The structural representation of detector pulling test system in the submarine pipeline that Fig. 1 provides for this utility model；

The control functional block diagram of detector trailer system in the submarine pipeline that Fig. 2 provides for this utility model；

The front view of the centralized operation platform that Fig. 3 provides for this utility model；

The side view of the centralized operation platform that Fig. 4 provides for this utility model；

The A face Local map of the centralized operation platform that Fig. 5 provides for this utility model；

The B face Local map of the centralized operation platform that Fig. 6 provides for this utility model；

The side view of the backhaul operation platform that Fig. 7 provides for this utility model；

The A face Local map of the backhaul operation platform that Fig. 8 provides for this utility model；

The structural representation of the frequency changing driving system that Fig. 9 provides for this utility model；

Detector pulling test Controlling model figure in the submarine pipeline that Figure 10 provides for this utility model；

Preparation flow chart before the operation that Figure 11 provides for this utility model；

The master operation surface chart that Figure 12 provides for this utility model；

The parameter that Figure 13 provides for this utility model arranges surface chart；

The return operating process schematic diagram that Figure 14 provides for this utility model；

The tractive operating process schematic diagram that Figure 15 provides for this utility model；

The parameter curve picture view that Figure 16 provides for this utility model.

Detailed description of the invention

In order to make this utility model be solved the technical problem that, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.

The frequency changing driving system that this utility model provides, it is applied in submarine pipeline in detector pulling test control system, understand for convenience of to frequency changing driving system, first structure and the operation principle of detector pulling test control system in submarine pipeline are introduced: in submarine pipeline, detector pulling test control system is a kind of a set of pull-in control system carrying out in pipeline for Technique of Subsea Pipeline Inspection instrument and testing, and draws it in pipeline to creep under work flow field state.Respectively arranging a winch at test pipe head and the tail two ends, head winch is pulling winch, and tail end winch is backhaul winch.During test, pulling winch traction detector is creeped in pipeline；Backhaul winch is for retracting pipeline tail end by pulling winch steel wire rope.Pulling winch pulls steel wire rope not only to pull detector motion, but pulls detector according to Working fluid flow state model algorithm in pipeline.

In this submarine pipeline, detector pulling test system can set traction original position, stop position, acceleration distance, creep speed, simulation Working fluid flow speed and pressure and other parameters according to detector test requirements document；Can show and record the parameters such as traction original position, stop position, acceleration distance, operational factor, pull strength.

As it is shown in figure 1, detector pulling test system in the submarine pipeline of this utility model offer, including pulling winch 1, backhaul winch 2, left leading block 3, right leading block 4 and pull-in control system.

(1) pulling winch 1, backhaul winch 2, left leading block 3, right leading block 4

Pulling winch 1 and backhaul winch 2 all include hoist engine, servo-driver, servomotor and winch attachment device；Servomotor is linked with hoist engine by servo-driver.Winch attachment device includes click fastening device, brake, clutch and rope processing device.

Pulling winch technical parameter:

1	Rated pull of rope	40kN
			2	Rated speed of rope	30-240m/min
3	Wirerope diameter	￠ 20mm
			4	Rope capacity	80m
5	Roll size	￠ 800 × 720mm
			6	Overall ratio	10.35
7	Brake model	YWZB-400/125
			8	Motor model	YZP355M1-6-200kW
9	Motor rated power	200kW
			10	Rated motor electric current	369A
11	Rated motor torque	1913N·m
			12	Rated motor rotating speed	980r/min
13	Locked-rotor torque/nominal torque ratio	2.3
			14	Torque capacity/nominal torque ratio	3.5
15	Electric machine rotation inertia	8.02kg·m2

Backhaul winch technical parameter:

Backhaul winch 2 is installed on the left side of detected pipeline 5, fixedly mounts left leading block 3 between backhaul winch 2 to detected pipeline 5 left side, and, the axis of backhaul winch 2, left leading block 3 and detected pipeline 5 is positioned at straight line；Pulling winch 1 is installed on the right side of detected pipeline 5, fixedly mounts right leading block 4 between pulling winch 1 to detected pipeline 5 right side, and, the axis of pulling winch 1, right leading block 4 and detected pipeline 5 is positioned at straight line；

Internal detector 6 is positioned at the pipe interior of detected pipeline 5, after left leading block 3 walked around by the hawser of backhaul winch 2, is fixed to the left end of internal detector 6；After right leading block 4 walked around by the hawser of pulling winch 1, it is fixed to the right-hand member of internal detector 6.

(2) pull-in control system

Pull-in control system is used for driving control pulling winch 1 and backhaul winch 2 action, and then internal detector 6 is carried out drawing-in motion.Pull-in control system includes handling control station, drive system, power-supply system and detecting system；Handle control station to be connected with drive system, power-supply system and detecting system respectively.

As in figure 2 it is shown, be the control functional block diagram of detector trailer system in submarine pipeline, this system possesses single action, manually and linkage, automatic traction mode, in a manual mode, by the various buttons on operating board and permutator manual operation trailer system.Under automatic mode, system automatically carries out traction experiment according to parameters such as original position set in advance, acceleration distance, the speed of service, stop position, deceleration distances, and break down in running autostop.

1., manually and automatically traction mode

Under manual mode, by the various buttons on operating board and permutator manual operation trailer system.Under automatic mode, system automatically carries out traction experiment according to parameters such as original position set in advance, acceleration distance, the speed of service, stop position, deceleration distances, and break down in running autostop.

2., the master/slave synchronization of winch

Must assure that steel wire tensioning in traction and return stroke, do not allow slack rope phenomenon occur, otherwise it would appear that disorder cable, time serious, steel wire rope can run out of reel, traction accident occurs, testing equipment is caused damage.For avoiding problem above to occur, system realizes traction electric machine and the master/slave Synchronization Control of backhaul motor by PLC, converter.

3., test parameters shows, stores and export function

This system can show the parameter in experimentation by the way of form and curve in real time, and is saved in CF card, can the data on CF card be exported on computer with the form of Microsoft Excel after having tested.

Handling control station and can arrange two, respectively centralized operation platform and backhaul operation platform, pulling winch 1 and backhaul winch 2 are by centralized operation platform centralized Control, after all conditions is satisfied by, can one-key start automatically draw；Also backhaul operation can be carried out by backhaul operation platform.

(2.1) centralized operation platform

As seen in figures 3-6, the respectively front view of centralized operation platform, side view, A face Local map and B face Local map；The electrical equipments such as the button indicating lamp that on centralized operation platform, assembling Siemens MP277 touch screen, S7-300PLC, winch operate, PLC connects MP277 touch screen by MPI bus, and PLC is connected with converter by Profibus-DP bus.

(2.2) backhaul operation platform

Backhaul operation platform is arranged on by backhaul winch, is fitted with the electric elements such as the button needed for backhaul operation, display lamp.As Figure 7-8, the respectively side view of backhaul operation platform and A face Local map.

(2.3) detecting system

Detecting system includes:

Pull-cord tension pick-up, for detecting the tension value of pull-cord；

Backhaul cable tension sensor, for detecting the tension value of backhaul hawser；

Pulling winch rope outlet direction detection encoder, is used for detecting pulling winch rope stretching angle；

Backhaul winch rope outlet direction detection encoder, is used for detecting backhaul winch rope stretching angle；

Pulling winch brake disengagement/band-type brake detection proximity switch 7, is used for detecting pulling winch band-type brake open mode；

Backhaul winch brake lock disengagement/band-type brake detection proximity switch, is used for detecting backhaul winch band-type brake open mode；

Pulling winch runs number of turns detection switch 8, is used for detecting pull-cord length value；

Backhaul winch runs number of turns detection switch, is used for detecting backhaul cable length value；

Backhaul stop position photoswitch 9, is installed on detected pipeline 5 inside and is positioned at the left end of detected pipeline 5, for detecting stop position when backhaul；

Backhaul deceleration position photoswitch 10, is installed on detected pipeline 5 inside and is positioned at the right-hand member of backhaul stop position photoswitch 9, for detecting deceleration position when backhaul；

Traction stop position photoswitch 11, is installed on detected pipeline 5 inside and is positioned at the right-hand member of detected pipeline 5, for detecting stop position when distraction procedure；

Traction deceleration position photoswitch 12, is installed on detected pipeline 5 inside and is positioned at the left end of traction stop position photoswitch 11, for detecting deceleration position when distraction procedure；

Pulling winch reel encoder 13, for detecting the position of internal detector 6.

(2.4) drive system

Drive system uses frequency changing driving system, as it is shown in figure 9, include dc bus, pulling winch variable frequency drive unit and backhaul winch variable frequency drive unit；Described pulling winch variable frequency drive unit and described backhaul winch variable frequency drive unit are connected in parallel on described dc bus；

Described pulling winch variable frequency drive unit and described backhaul winch variable frequency drive unit all include: commutator, inverter, brake unit and braking resistor；

The input of described commutator is connected on dc bus, and the outfan of described commutator is connected to the input of described inverter, and the outfan of described inverter is connected on winch servomotor；

One end of described brake unit is parallel-connected on dc bus, and the other end of described brake unit is connected with described braking resistor.

In actual application; commutator and inverter composition frequency conversion tank; the core of frequency conversion tank is converter; use Siemens or the AC-DC-AC voltage-source type converter of ABB band intermediate DC link; there is inside converter current feedback link; starting performance is good; it is quick on the draw; corresponding starting current can be quickly exported according to load; to electrical network without impact, converter has and is adapted to the short-time overload function of motor ability and power phase shortage, output phase shortage, power supply overvoltage, crosses the defencive functions such as stream, under-voltage, ground connection, converter be overheated.

Some mechanism is operated in motoring condition, and some mechanism is operated in generating state；It is operated in the mechanism of generating state by back electrical energy to dc bus, consumed by the mechanism being operated in motoring condition, the most not only energy-conserving and environment-protective but also improve the utilization rate of system power, decrease the investment of braking resistor simultaneously, it is to avoid the problem of braking resistor heat radiation；Or can select as the case may be when the power consumption of feedback cannot be fallen by the mechanism being operated in motoring condition to be consumed by braking resistor directly feeds back to electrical network.

The maximum drawbar pull of pulling test system of the present utility model is 60kN, and rated drawbar pull is not less than 40kN；Hauling speed is at 0.5m/s～4m/s, continuously adjustabe；During service load 40kN, normal speed is 4m/s；At hauling speed traction accelerating sections distance no more than 5m from 0m/s to 4m/s；Draft travel at least 80m.

This utility model also provides for a kind of detector pulling test method in submarine pipeline, comprises the following steps:

Step 1, after control system self-inspection, adjusts internal detector 6 position so that it is be in the left side of detected pipeline 5 automatically；

Step 2, after control system receives enable order, control system generates traction functional relationship according to Working fluid flow state model algorithm in pipeline, and based on traction functional relationship, folding and unfolding hawser speed and direction to pulling winch 1 and backhaul winch 2 are adjusted, particularly as follows: regulated pulling winch 1 tension force and acceleration according to internal detector 6 jigger by working fluid effect, drawing tension and acceleration is made to compensate internal detector 6 jigger magnetic force with velocity variations according to tribology principle functional relationship；Simultaneously, the tension force of backhaul winch 2 and acceleration is made to follow tension force and the acceleration change at random of pulling winch 1, make pulling winch 1 2-in-1 with backhaul winch become acceleration change at random time guarantee that hawser is in tensioning state all the time and does not touch tube wall, final control pulling winch 1 draws internal detector 6 and moves on the right side of pipeline, and backhaul winch 2 is in cable laying state simultaneously；

At internal detector 6 during pipeline race running, when control system detects that internal detector 6 runs to draw deceleration position by traction deceleration position photoswitch 12, control system controls pulling winch 1 and backhaul winch 2 slows down simultaneously；When by traction stop position photoswitch 11, control system detects that internal detector 6 runs to draw stop position, control system controls pulling winch 1 and backhaul winch 2 stops simultaneously, and pulling test process terminates；

This step is particularly as follows: with reference to Figure 10, for detector pulling test Controlling model figure in submarine pipeline；

Step 2.1, sets backhaul winch given tension value, and backhaul winch given tension value is constant；Setting pulling winch speed preset value, pulling winch speed preset value is constant；

Step 2.2, in real time detection backhaul winch cable actual tension value；Backhaul winch cable actual tension value inputs as the negative sense of the 1st comparator, backhaul winch given tension value inputs as the forward of the 1st comparator, after 1st comparator carries out computing to each input, the output valve of the 1st comparator is input to the 1st backhaul PID, and the output of the 1st backhaul PID is after torque amplitude limit, on the one hand, after speed limiting, act on backhaul winch converter, and then adjust backhaul winch motor rotating speed, it is achieved backhaul winch cable identical tension effect；

On the other hand, backhaul winch torque value after torque amplitude limit, as positive feedback, is input to the 2nd comparator, and pulling winch speed preset value, as positive feedback, is input to the 2nd comparator；Pulling winch cable actual tension value is input to the 2nd comparator as negative feedback；After 2nd comparator carries out computing to each input, the output valve of the 2nd comparator is input to the 1st traction PID, and the output of the 1st traction PID, after speed limiting, acts on pulling winch converter, and then adjusts pulling winch motor speed, it is achieved pulling winch constant motion.

Step 3, carry out next time pulling test time, first control backhaul winch 2 and draw internal detector 6 and move on the left of pipeline, pulling winch 1 is in cable laying state simultaneously；

At internal detector 6 on the left of pipeline in running, control system detects when internal detector 6 runs to backhaul deceleration position by backhaul deceleration position photoswitch 10, and control system controls pulling winch 1 and backhaul winch 2 slows down simultaneously；When by backhaul stop position photoswitch 9, control system detects that internal detector 6 runs to backhaul stop position, control system controls pulling winch 1 and backhaul winch 2 stops simultaneously, is then back to step 2 and carries out pulling test process.

In traction and return stroke, it is necessary to assure steel wire tensioning, not allowing slack rope phenomenon occur, otherwise it would appear that disorder cable, time serious, steel wire rope can run out of reel, traction accident occurs, testing equipment is caused damage.For avoiding problem above to occur, system realizes the master/slave Synchronization Control of traction electric machine and backhaul motor by PLC, converter.

In the submarine pipeline that this utility model provides, detector pulling test system detailed operation is:

(1), working condition

Ambient temperature: the highest 45 DEG C, minimum-15 DEG C；Relative humidity: 46%～95%；The gas without electro-conductive dust and destroying dielectric or steam；Without high vibration and impact；Good ventilation condition.

(2), in-site installation

1. can carry out after, accomplishing fluently ground according to overall dimensions and fot screw hole that equipment is in place, levelling, bury appropriate fot screw.After cement solidification threadably foot screw with fixing equipment.

2., by figure connect with the mains line, output lead.After checking that line is correct, insulation should be checked, with 500V megger more than 2M Ω can power transmission, after reason to be checked elimination, can power transmission.Checking electrical machine insulation and electric wire connectivity, rotor rotates motility, and mechanical transmission mechanism is the most normal.

3., the most normal after, switch on power, and note scene can not because of electric machine rotation harm people and equipment.Observing motor rotation the most normal, including size of current, rotating speed height, and direction of rotation is the most correct.

(3), electric sequence

1., frequency conversion tank: first checking that the voltmeter display voltage on cabinet door is the most normal, close after voltage is normal chopper 2QF1,2QF2,2QF3,3QF1,3QF2,3QF3,4QF1,4QF2,4QF3 successively.Wherein 2QF1 be main frame inverter power switches, 2QF2 be main motor fan power switch, 2QF3 be main frame band-type brake on and off switch, 3QF1 be subsidiary engine inverter power switches, 3QF2 be subsidiary engine motor fan on and off switch, 3QF3 be subsidiary engine band-type brake on and off switch, 4QF1 for controlling battery main switch, 4QF2 be control on and off switch in frequency conversion tank, 4QF3 is standby DC24V on and off switch in cabinet.

2., operating board: close chopper successively: 7QF1,7QF2,7QF3.Total power switch in wherein 7QF1 is operating board, 7QF2 is PLC on and off switch, and 7QF3 is touch screen on and off switch.

(3), preoperative preparation

Before operation, preparation flow process is as shown in figure 11.Wait after powering on that touch screen key frame shows normally, as shown in figure 12, for master operation surface chart, such as Figure 13, surface chart is set for parameter, system may send chimes of doom when the time comes, indicating fault lantern festival is bright, reports to the police and is because communication connectivity problem during system electrification, can be with " the eliminating chimes of doom button " on point touching screen, then click on the button in Figure 12 and check warning message, resetted by " failure reset " button after confirmation.

After confirming alarm free, revolving light test turns on pass, after confirming that all display lamps are lighted, all of permutator is all got to centre position.Press after " centralized operation selection " button waits until that " centralized operation selection " display lamp lights, operation " main frame band-type brake is opened " and " subsidiary engine band-type brake is opened " knob, observe (b) and (c) band-type brake of host picture in Figure 12 to open display lamp and become green, illustrate that band-type brake is opened normally.

Then arriving the junction hand turning of reductor and motor, rotating the most normally can start.Whether (d) three the stop position display lamps (A/B/C) observed in Figure 12 on key frame are green, illustrate that switch is normal if green, if then obstructing the light with object that all to become Lycoperdon polymorphum Vitt explanation normal for three display lamps.After confirming that (e) set-point in Figure 12 sets, operating board selects " single action ", " manually " working method, then carry out receiving payout operation, detector location in observation Figure 13 parameter setting screen shows and subsidiary engine rope length displays whether to change, and it is normal that the explanation rope length that changes detects proximity switch；And observe whether winch has exception.

(4), return operation

Return operating process is as shown in figure 14: first ensure that winch meets entry condition, around without person potential safety hazard.Revolving light test turns on pass, after confirming that all display lamps are lighted, all permutatoies is got to centre position, presses " centralized operation button ", and " centralized operation display lamp " is lighted.Select " single action ", " manually " mode of operation, respectively to main and auxiliaries payout operation, main frame steel wire rope and subsidiary engine steel wire rope are separately fixed at the two ends of jigger, then subsidiary engine individually carries out haul-in operations (need people and guarantee steel wire rope marshalling on subsidiary engine reel in the observation of subsidiary engine end, if irregular steel wire rope is released by irregular needs, take-up again) tighten up steel wire rope.

After steel wire rope tightens up; all selection switches are got to centre position; select " linkage ", " automatically " mode of operation; after confirming that the setting of setting 0.20 (m/s) return speed, 75 (%) slave drive take-up setting and the setting of 20 (%) slave drive cable laying are out of question; press " main frame cable laying " button, start main winch steel wire rope is led back initiating terminal.

After jigger arrives initiating terminal, all switches on centralized operation platform are all got to centre position, then manual speed is set to: 0.05 (m/s) manual speed sets；Press and after forbidding on touch screen remotely operates, show permission remotely operation.

On local console, after pressing " the local operation selection " of flicker, " local operation selection " display lamp Chang Liang, local console selects " linkage ", " manually " operator scheme, press main frame cable laying button, stop after jigger is pulled out, then all selection switches are got to centre position.

Local console selects " single action ", " manually " operator scheme, then individually subsidiary engine is carried out payout operation, after hawser comes loose entirely, untie shackle, take out jigger；After in place for detector, the steel wire rope of main and auxiliaries is separately fixed at head and the afterbody of detector；On local console under " single action ", " manually " operator scheme, press main frame take-up button and slowly detector tractive is entered pipeline.

After subsidiary engine steel wire rope tightens up, local console selects " linkage ", " manually " operator scheme, slowly detector tractive is entered pipeline, stop after detector afterbody enters pipeline about 10cm, all switches on local console are got to centre position.

(5) tractive operation

Tractive operating process is as shown in figure 15: after completing return operation final step, after reaffirming that three photoswitches of tractive rest position are normal, centralized operation platform is pressed " centralized operation selection " button of flicker, " centralized operation selection " button indicating lamp Chang Liang, confirms that 2.00 (m/s) draw rate of Figure 12 sets and after the setting correctly of 20 (%) slave drive cable laying；After confirming that in Figure 13 parameter setting screen, automatic pull stop position inputs 32.00 (m), effective tractive stop position；Confirm the detector location in Figure 13 show 0.00 (m), detector current location input 0.00 (m), detector current location is set, subsidiary engine rope length shows that 0.00 (m), subsidiary engine long value of currently restricting inputs 0.00 (m), arranges subsidiary engine and currently restrict length.

Centralized operation platform selects " linkage ", " automatically " operator scheme, press the beginning record button in key frame, register lamp ● after green, press the ready button in key frame, ready indicator Chang Liang on centralized operation platform, after pressing main frame take-up button, system just starts to press the speed automatic pull set to stop position, occurs any problem in traction process, and after pressing scram button, system is automatically stopped.

After arriving tractive stop position, press the stopping record button in key frame, register lamp ● stop data record for redness.Centralized operation platform selects " linkage ", " manually " operator scheme, slowly detector is pulled out pipeline.

After detector all pulls out pipeline, selecting " single action ", " manually " operator scheme on centralized operation platform, respectively main and auxiliaries is carried out payout operation, the shackle on detector pulled down by steel wire rope after coming loose completely, it is ready for return operation, carries out distraction test next time.

(6), touch screen screen operation

Can set the winch speed of service on key frame, winch motor parameter can also show in real time, can show the parameter of electric machine and lineoutofservice signal pull with the form of trend curve at trend picture.Various warning message can be inquired about in alarm screen.Touch screen is resistance-type, uses fingernail to tap sensitiveer during operation.

Click on (g) in Figure 12, Figure 13 and enter key frame, click on (f) and enter parameter curve picture as shown in figure 16, click on (h) and enter parameter setting screen, click on (a) and enter alarm logging picture.

(7), alert process

The fault of converter includes read/write fault (communication failure) and the fault of converter itself, and " RESET " that eliminate the need for first passing through on frequency-changer operation panel of this fault resets, and is then carrying out failure reset by " failure reset ".Failure code for converter can arrive the inquiry of converter description 233-239 page.About the explanation of warning message, for occurent warning, display for redness, the alarm indicator white of disappearance in alarm logging.

Slave drive hypervelocity fault, or when this fault is slave drive, steel wire rope is not attached to the auxiliary load that the reasons such as wire cable rupture together cause is zero, the hypervelocity fault of generation, can be resetted by " failure reset " knob on centralized operation platform.

Fault opened by main frame/subsidiary engine band-type brake, this fault be send band-type brake opening signal after, proximity switch opened by band-type brake does not has action, possible reason to have band-type brake damage, band-type brake power source trip or proximity switch to damage, and can be resetted by " failure reset " knob on centralized operation platform.

Main frame/subsidiary engine take-up and cable laying are forbidden not sending warning, only limits take-up and payout operation, if forbid to inquire about in alarm logging.Can forbid effective or invalid by the setting of parameter setting screen.

(8), points for attention

1. before, carrying out " linkage " operation, it is necessary to ensure that the steel wire rope of main and auxiliaries links together and solid and reliable, forbids steel wire rope to be not attached to together and carries out combined operation, and otherwise subsidiary engine there will be runaway accident.

2., before, carrying out " linkage " operation, it is necessary to ensure that the steel wire rope of main and auxiliaries is in tensioning state, otherwise subsidiary engine steel wire rope there will be to tighten up suddenly and shakes.

3., before starting winch, it is necessary to ensure that the steel wire rope on main and auxiliaries reel does not has disorder cable phenomenon.

4., in operation, local console and one people of centralized operation platform needs, monitor winch running status, press " emergent stopping " button when situation occurs.

5., when cable laying, it is desirable to have people monitors the length releasing steel wire rope, it is not possible to release too much, the phenomenon of disorder cable the most easily occurs, occur that disorder cable must stop at once, again that cable arranging is neat.

6., must confirm before each tractive that tractive stop position photoswitch is normal, rope long detection proximity switch is normal.

7., ensureing that switch board surrounding air is dried, system exceedes first quarter moon and does not works, and operates after this work need to power on one hour again.

(9), operation and maintenance

1., ensure not want overload operation when using, will operate in strict accordance with operating procedure and points for attention.

2., periodically carrying out maintaining, running check wiring nose, with or without loosening, should be cleared up when dust is the thickest in time, otherwise, insulation may be made to reduce and cause short circuit or " blowing out ".

3., change element time, component parameters should be checked and approved, such as pressure, electric current, size etc., during wiring, note polarity.

4., make regular check on sensor and connect the most solid and reliable.

5. system earth, is made regular check on the most reliable.

6., make regular check on band-type brake open instruction proximity switch the most normal.

7., each safety guard of system to be ensured working properly, must not arbitrarily remove.

8., regular purging system switch board, the drainage screen of frequency conversion tank is the most once cleared up, it is ensured that system stable operation.

The above is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, on the premise of without departing from this utility model principle; can also make some improvements and modifications, these improvements and modifications also should regard protection domain of the present utility model.

Claims (2)

1. the frequency changing driving system of detector pulling test in submarine pipeline, it is characterised in that include dc bus, pulling winch variable frequency drive unit and backhaul winch variable frequency drive unit；Described pulling winch variable frequency drive unit and described backhaul winch variable frequency drive unit are connected in parallel on described dc bus；

Described pulling winch variable frequency drive unit and described backhaul winch variable frequency drive unit all include: commutator, inverter, brake unit and braking resistor；

The input of described commutator is connected on dc bus, and the outfan of described commutator is connected to the input of described inverter, and the outfan of described inverter is connected on winch servomotor；

One end of described brake unit is parallel-connected on dc bus, and the other end of described brake unit is connected with described braking resistor.

The frequency changing driving system of detector pulling test in submarine pipeline the most according to claim 1, it is characterised in that described commutator is provided with reactor between described dc bus.