CN109943703A

CN109943703A - For manufacturing the method and system of continuous pipe

Info

Publication number: CN109943703A
Application number: CN201711395939.2A
Authority: CN
Inventors: M·E·瓦尔德斯; D·J·蒙特罗索; J·M·迈特
Original assignee: Tenaris Coiled Tubes LLC
Current assignee: Tenaris Coiled Tubes LLC
Priority date: 2017-12-21
Filing date: 2017-12-21
Publication date: 2019-06-28

Abstract

The present invention provides a kind of system, comprising: feeder is configured to continuously manage with set rate feeding length；Velocity sensor is configured to determine the feed rate of the continuous pipe of length；First geometrical property sensor is configured to determine one or more geometric dimensions of the part of the continuous pipe of length；First treating stations comprising first entrance, first outlet and the first therebetween thermal treatment zone, first thermal treatment zone include at least one first area heating element；And controller, it is configured to energize first area heating element with the first heat treatment power level based on the first heating element value of the first heat treatment target value, feed rate, one or more geometric dimensions and first area heating element.The system may also include additional heat treatment and cooling stations.

Description

For manufacturing the method and system of continuous pipe

Technical field

The present invention relates to the method and systems for manufacturing continuous pipe, and relate more specifically to using continuous for heating The feed forward control loop of moving tube manufactures the method and system of continuous pipe.

Background technique

Continuous pipe (CT, Coiled Tubing) is the steel pipe with continuous length, on spool and is used for petroleum It include but is not limited to drill through wellbore and re-worked to existing wellbore with the various applications in gas industry.The pipe It can be made of various steel or other metal alloys.Continuous pipe can have various diameters, wall thickness and pipe range.Pipe relevant to the disclosure There can be the total length up to 50,000 feet (15,240 meters), wherein typical length range is from 15,000 foot (4,572 Rice) to 25,000 feet (7,620 meters).Similarly, they can have at 1 inch (2.54 centimetres) to 5 inches (12.7 centimetres) Between measure outer diameter and at 0.008 inch (0.02 millimeter) to the wall thickness between 0.3 inch (7.6 millimeters).

Continuous pipe can be used for execute various operations and service in oil and natural gas industry, including drilling well, formed wellbore, Form well completion plug or other components, execute drilling well intervention, execute workover, execute production enhancing etc..These pipes also can be used Act on the line pipe in fluid conveying and well drilling well and maintenance.Other industries are it is also possible that carry out it with continuous pipe Operation and service.

It is connect by using the cross weld (referred to as biasing weld seam (bias weld)) being angularly oriented relative to hot rolling direction The band steel of multiple lengths is closed to manufacture continuous pipe.Then handle obtained strip in forming and welded tube mill, in the forming and Steel is configured to pipe in welded tube mill and weld seam is soldered.Weld seam welding process can be ERW (resistance welding), laser welding etc.. In some embodiments, it is wound up on spool when obtained continuous Guan Qi leaves weld job line.

When flat steel disc is joined so continuous strip, can be manufactured by changing the thickness of flat steel disc by continuous pipe structure At taper tubing string.This can generate discrete variation along continuous pipe tubing string in terms of wall thickness.Alternatively, course of hot rolling can be used Continuous pipe is produced, squeezes out and formed in the hot rolling steel from pipe, the outer diameter which has is greater than generated pipe.This method Also allow outer diameter and/or wall thickness along the length consecutive variations of continuous pipe tubing string.Alternatively, continuous to be formed in welding band Before band, band can have the wall thickness change caused by milling train.

Historically, the material of mechanical property needed for continuous Guan Youyi is processed into the major part with final pipe material product Material strip band is made.When these bands are welded into pipe by the engagement of biasing weld seam and then weld seam, the machinery at welding position is special Property (for example, due to changes in material of commissure) will be different.Substrate itself is special due to manufacturing method, wall thickness and materials chemistry Property aspect may also have intrinsic characteristic variations.This, which generates (especially at welding region), has the continuous of nonuniformity Pipe tubing string finished product.The position that the characteristic variations may cause stress to be concentrated in use, so as to cause potential failure.Not yet More reliable performance will be had by having the continuous pipe tubing string in these nonuniformity regions.

It is described in prior art american documentation literature US20140272448A1 continuous and the continuous pipe of Dynamic heat-treatment Method.US20140272448A1 discloses a kind of manufacturing method of continuous pipe, as minimum or eliminates by different welding It is heteropical as a result, the continuous pipe has along the length (in both microstructure and mechanical property) of continuous pipe caused by journey There is improved characteristic.The target of the process is to generate uniform microstructure, such as be made of tempered martensite uniform microcosmic Structure.

It is known for continuously being managed for continuous heat with other art methods of wire rod and system.However, these Art methods and system, which are disclosed and instructed, is once used only a kind of heat treatment process (for example, annealing).This prior art Another example is U.S. Patent No. 5,328,158.The prior art patent describes a kind of equipment, and the equipment is in Guan Lianxu Ground is heat-treated continuous pipe while passing in and out heat-treatment furnace.But be wound in Guan Lu, this furnace inlet and Exit causes to be bent.Pipe can only once undergo a kind of heat treatment process (for example, annealing, quenching, tempering).This prior art System production along its length with uniform yield strength (YS, Yield Strength) product in terms of there are problems.When Wall thickness (WT, Wall Thickness) or the chemical characteristic of steel change (even slight variation) when, furnace will slow down instead It answers or basic Fails To Respond.If furnace is maintained at identical temperature, the increase of wall thickness will lead to the reduction of tube temperature degree, to lead Yield strength is caused to increase.Due to the tempering characteristic changing between different steel bands, it is contemplated that have similar variation.If stove is standby For the ability that the temperature requirement of bands different in continuous pipe tubing string is adjusted, then it will be unable to immediate response, cause in mistake With the excessively high area under control domain being heat-treated with low temperature excessively during crossing.

It is intended to provide the new system and new method of a kind of process control for heat treatment, wherein continuous pipe is by uncoiling, heat Processing and re-winding (for example, the multistage in continuous process is heat-treated).

When manufacture has the continuous pipe of standard of required mechanical property, the uncontrolled variation of wall thickness, raw material chemistry Characteristic, the wall thickness change introduced during the design (taper), variation of Guan Sudu etc. can introduce variation in the gained characteristic of pipe. The process of this prior art may generate uniform pipe in terms of microstructure, but if the process do not obtain it is appropriate Control, then pipe will have mechanical property heterogeneous.

The mechanical property as caused by heat treatment process (that is, yield strength) depends primarily on the ability of control temperature.Work as place When managing continuous pipe, linear velocity can change during entire production run.Steel chemical characteristic between different steel bands is different, even if Steel chemical characteristic is within the acceptable range, this to change the significant changes for also resulting in mechanical property.Similarly, wall thickness is in item Change between band, different responses is made to heating so as to cause pipe.These factors are combined together to be generated largely in the process Natural trend.Therefore, continuous pipe product has the mechanical property of statistically wide scope distribution.

Summary of the invention

A kind of use is disclosed for heating the feed forward control loop of continuous moving pipe to manufacture the method for continuous pipe and be System.This method and system include the process control for heat treatment, in the process control, continuous pipe by uncoiling, heat treatment and It rewinds (for example, the multistage in continuous process is heat-treated).

This method and system also provide it is a kind of for manufacturing the control system of continuous pipe, will be along the length of the continuous pipe Generate uniform mechanical property.

The heat treatment of continuous pipe is executed as substantially continuous process, wherein continuous pipe it is mobile by a series of plus Heat stations/region, these heating station/regions based on the power level of the mass flow of pipe to be heated to be operated.Heating should Pipe to reach target temperature, the target temperature based on heat-treatment lines size (for example, the size of heat-treatment lines influence it is cooling away from From/time, the rate of heat addition etc.), actual materials chemistry characteristic, the required characteristic of the wall thickness of pipe and gained pipe.Therefore, although Can control pipe some metallurgy aspects (for example, if using Hollomon Jaffe (Huolou Meng-Jia Fei) equation, when Between and temperature in terms of controlled), but the practical controlling extent one of the variable for selected heat treatment technics and specific product As it is less obvious.

In a first aspect, a kind of system includes: feeder, it is configured to continuously manage with set rate feeding length；Speed Sensor is configured to determine the practical feed rate of the continuous pipe of length；First geometrical property sensor is configured to determine length Spend one or more geometric dimensions of the part of continuous pipe；First treating stations comprising first entrance, first outlet and be located at At least the first thermal treatment zone therebetween, first thermal treatment zone include at least one first area heating element；And Controller is configured to based on the first heat treatment target value, practical feed rate, one or more geometric dimensions and the firstth area First heating element value of domain heating element energizes first area heating element with the first heat treatment power level.

Various embodiments may include part in following characteristics, all or do not include following characteristics.First heat treatment mesh Scale value can pipe chemical characteristic value based on one or more.The system may also include the first temperature sensor, first temperature sensing Device is configured to measurement pipe in the first temperature of first access point, wherein the first heat treatment power level is also based on the first temperature.It should System may include second temperature sensor, which is configured to second temperature of the measurement pipe at first outlet, Wherein the first heat treatment power level is also based on second temperature.First heat treatment station may include the second thermal treatment zone and Temperature sensor between one thermal treatment zone and the second thermal treatment zone.First treating stations can be austenitizing station.This is System may include second processing station and additional temperature sensor, the second processing station have second entrance, second outlet and The additional thermal treatment zone of at least one therebetween, at least one additional thermal treatment zone are additional at least one Heating element, the additional temperature sensor are configured to measurement pipe in the second entrance for leading to second thermal treatment zone The temperature at place, wherein the controller is configured to based on second processing station target value, feed rate, one or more dimensionings The heating element value and second temperature of additional heating element very little, suitable for second processing station are with second processing station power level pair At least one additional heating element energy supply.Second processing station can be tempering station.Second processing station, which may also include, to be had separately Another additional thermal treatment zone of one additional heating element.The system may include straightener, which is configured in the portion Divide to roll up pipe before entering the first treating stations and carries out uncoiling.The system may include up- coiler, be configured to continuously manage length curved Qu Chengjuan.The system may include velocity sensor, be configured to determine the practical feed rate of the continuous pipe of length, wherein the first heat Treating stations power level is based on practical feed rate.The system, which may also include, to be arranged between the first treating stations and second processing station Third treating stations, the third treating stations can be quenching station, with first entrance, first outlet and therebetween and match It is set at least one cooled region of the cooling part.

In second aspect, one kind includes: to receive length continuously to manage for carrying out heat-treating methods to pipe；Receive the first heat Processing target value；It is continuously managed with scheduled feed rate feeding length；Determine that the one or more of the part of the continuous pipe of length is several What size；The first heat treatment temperature is determined based on the first heat treatment target value；Based on the first heat treatment temperature, practical feeding First heating element value of rate, one or more geometric dimensions and the first heating element determines the first treating stations power water It is flat；The first heating element is energized with the first treating stations power level；Service pipe is to make it through the first heat treatment station, this first Heat treatment station has first entrance, first outlet and the first therebetween heating element；And it is left in the selected portion of pipe The part of pipe is heated to the first heat treatment target value before first treating stations.

Various embodiments may include part in following characteristics, all or do not include following characteristics.This method can wrap Include the first temperature of measurement pipe after heating；Based on the first temperature, the first heat treatment temperature, feed rate, one or more Geometric dimension and the second heating element value of the second heating element determine second processing station power level；With second processing station function Rate level energizes the second heating element；And the part of pipe is heated before the selected portion of pipe leaves the first treating stations To the second heat treatment target value.This method may include receiving one or more pipe chemical characteristic values, wherein determining the first treating stations Power level also pipe chemical characteristic value based on one or more.This method may include first temperature of the determining pipe in first access point Degree, wherein determining that the first treating stations power level is also based on the first temperature.This method may include measurement pipe at first outlet Second temperature, wherein the first treating stations power level is also based on second temperature.This method may include leaving at first in the part Reason quenches the pipe after station, which is cooled to scheduled hardening heat.This method may include receiving the second heat Processing target value；The second heat treatment temperature is determined based on the second heat treatment temperature；Service pipe, should to make it through second processing station Second processing station includes second entrance, second outlet and the second therebetween thermal treatment zone, at least one additional heat Processing region includes at least one additional heating element；Determine second temperature of the pipe at the second entrance；Based on Two heat treatment temperatures, feed rate, one or more geometric dimensions, the second heating element value of at least one additional heating element To determine second processing station power level；And based on the second heat treatment target value, feed rate, one or more dimensionings The heating element value and the second temperature of additional heating element very little, suitable for the second heating station are with second processing station power level At least one additional heating element is energized；And by the part of pipe before the selected portion of pipe leaves the second heat treatment station It is heated to the second heat treatment target value.This method may include that the part of pipe is being heated to the second heat treatment target value Later, the third temperature of measurement pipe, and heat the part of pipe before the selected portion of pipe leaves the second heat treatment station Target value is heat-treated to third.This method may include that the part is cooled to predetermined temperature.Cooling may include receiving cooling treatment Target value；Cooling treatment temperature is determined based on cooling treatment target value；Service pipe is to make it through third treating stations, at the third Reason station includes second entrance, second outlet and at least one therebetween cooling treatment region；Pipe selected portion from The part of pipe is cooled to cooling treatment target value before opening third treating stations.This method may include entering first in the part Pipe is rolled up before treating stations and is aligned.This method may include that the continuous pipe bending of length is coiled.This method may include that determining length connects The practical feed rate of continuous pipe, wherein the first treating stations power level is also based on practical feed rate.

Detailed description of the invention

Fig. 1 is the exemplary block diagram for showing the system being heat-treated to the continuous pipe of aligning.

Fig. 2 is the exemplary chart for showing the time-temperature variation during the heat treatment of continuous pipe.

Fig. 3 is the block diagram for showing the Exemplary Control Flows for producing continuous steel pipe.

Fig. 4 is the block diagram shown for producing exemplary variable used in the example control processes of continuous steel pipe.

Fig. 5 is the chart for showing exemplary testing fatigue.

Fig. 6 is the chart for showing the exemplary temperature variation under controlled and uncontrolled austenitization.

Fig. 7 is the flow chart for producing the instantiation procedure of continuous steel pipe.

Same reference numerals in different figures indicate identical element.

Specific embodiment

Generally, the target of the Heat Treatment Control provided by process as described herein is raw in the very narrow margin of tolerance Produce the continuous pipe with substantially uniform properties.In some embodiments, the mechanical property as obtained by constriction (for example, along The yield strength of length of tube) range, the value of products obtained therefrom can be increased because mechanical property can limit it is certain valuable Pipe/tube performance feature.

The process 100 of Dynamic heat-treatment is shown in FIG. 1.Generally, process 100 handles pipe 102 in the following manner: in the future It is rolled into aligning part 19 from 104 solution of winding part of the pipe 102 of spool 11, aligns part 19 by during substantially continuous The heat treatment process stage set, and pipe 102 be allocated as through processing unit be rewound spool 18 for winding part 106 On.

During process 100, pipe 102 forms the first of aligning part 19 by pipe straightener 12 from 11 uncoiling of spool End.Then sequence passes through pipe heating station 13 (for example, austenitization stage), pipe quenching station 14 and pipe tempering station 15 to pipe 102.Each 13 to 15 entrances and pipe 102 including the entrance of pipe 102 station of standing leave the outlet at station.For example, pipe heating station 13 includes 110 He of entrance Outlet 112 has heating element (not shown) therebetween.Then, small in (for example, as caused by heat treatment process) pipe 102 Pipe deforming is adjusted before through pipe cooling stations 17 by pipe size regulation station 16.It then will be through Overheating Treatment and cooling Become winding part 106 in the re-winding to spool 18 of pipe 102.

Although there are many possible configurations at station 12 to 17, by pipe austenitizing station 13, pipe quenching station 14 and manage back The process that fire station 15 executes can schematically be summarized as Temperature-time variation, as shown in Figure 2.

Fig. 2 is the time-temperature variation by process (instantiation procedure 100 of such as Fig. 1) during the heat treatment of continuous pipe Schematic diagram 200.In this example, process can be austenitization, followed by quenches and be tempered.In Fig. 2, initial " green compact pipeline " passes through a series of heating stations (for example, being two heating stations in this illustration, although the quantity can change) It is handled with other stations (for example, quenching station, tempering station), a series of heating stations and other stations can be separated by gap, and the gap exists The cooling of short time is provided between heating station.It in some embodiments, can be to the quantity and arrangement, the size in gap at station 12 to 17 And quantity be changed with change the process (for example, between heating station, between heating station and cooling stations and different cold But it is changed between the cooling stations under rate).

At the stage 202, for may various variable characteristics relevant to subsequent processing step, chemical characteristic and wall Thickness, " green compact pipeline " state of pipe before processing.In the stage 204, pipe 102 is heated to scheduled austenitizing temperature (example Such as, in the case where needing to carry out austenitizing before quenching in heat treatment process) and in 206 phase of holding stage of the temperature Between be maintained at the temperature up to the scheduled retention time.In some embodiments, if carrying out fast quickly cooling during hardening phase 208 But initial transition does not have started before process, then pipe 102 can be maintained at substantially constant temperature or guarantor by the holding stage 206 It holds under slow cooling rate.In some embodiments, the stage 202 to 206 can be executed in the heating station 13 of Fig. 1. In illustrative schematic diagram 200, be shown the stage 204, carried out wherein heating with three phases.In some embodiments, rank Section 202 to 206 can execute repeatedly in heating station 13.For example, heating station 13 may include three or any other suitable number The heating region (for example, each heating region has one or more heating elements) of amount by hardening phase 208 to handle Pipe 102 is heated with two, three or more increment before.

The cooling rate in stage 208 is identified as the cooling rate greater than material predetermined critical (for example, to promote expectation Transformation).In some embodiments, cooling rate can be constant, or can be variable.In some embodiments In, the temperature for quenching exit is substantially equal to environment temperature, or can be different temperature.In some embodiments In, the stage 208 can execute in the quenching station 14 of Fig. 1.

Although scheduled temperature is possible lower (for example, without austenitizing), similar process can be applied to subsequent Tempering cycles.For example, can be reheated during tempering stage 210 to pipe, until reach scheduled tempering temperature and Keep the scheduled tempering temperature up to the predetermined time at the stage 212.In illustrative schematic diagram 200, be shown the stage 210, Wherein heated in multiple stages by multiple heating regions.In the exit of tempering stage 212, during the stage 214 with Controllable rate cools down pipe, until reaching predetermined temperature at halt 216.In some embodiments, controlled cooling Rate can influence the gained mechanical property of pipe.In some embodiments, the stage 210 to 216 can be by 15 He of pipe tempering station of Fig. 1 17 execute.In some embodiments, heat treatment process 100 may need one or more quenchings (Q) and be tempered (T) configuration Combination, Q+T, Q+Q+T, Q+T+Q+T, Q+T+T's etc..

In some embodiments, certain metallurgical features may be present, the final machine of pipe can be limited based on the thermal cycle Tool characteristic.For example, can be by austenitization by one of the metallurgical feature that the configuration of process 100 influences (for example, soaking temperature Degree and time, the rate of heat addition and/or cooling rate combination) caused by austenite grain size.Close limit control to the process System may make the material clearly limited to enter hardening phase and subsequent tempering stage.In another example, by process 100 Another configured in the metallurgical feature influenced can be starting microstructure and property of the pipe before tempering, can be by The influence of temper grade.In another example, the characteristic of tempering cycles can based on the rate of heat addition, soaking temperature and time and The combination (such as in the case where austenitizing) of cooling rate.

In some embodiments, it can predict starting material characteristic after quenching and be returned with specific tempering cycles The relationship between final mechanical property after fire.For example, actual time-temperature circulation can be by using Hollomon- The equation of Jaffe type determines.In some embodiments, for industrially applying the knowledge of the concept that may need Solve specific heating technique (for example, induction heater or gas-fired heater, continuously or in batches heating) and pipe feature (for example, Chemical characteristic, diameter, wall thickness) complexity, these may influence the response of thermal cycle and/or material to this circulation.

Referring now to Fig. 3 and Fig. 4, the continuity of continuous pipe product can by using continuous heat process (such as Fig. 1's Instantiation procedure 100) it solves.Fig. 3 show suitable for continuous heat process (for example, process 100) heating element (for example, plus Heating element in heat stations 13) process control flow Figure 30 0.Fig. 4, which is shown, to be suitable for multiple heating elements (for example, Fig. 2 Multiple heating increments in stage 204) pipe heating or tempering station continuous heat process 400 process control flow figure.? In some embodiments, process 400 may be implemented as the part of process 100.For example, process 400 can be by moving continuous pipe It is dynamic to be implemented by a series of heating regions in heating station (such as heating station 13) and/or tempering station 15, such as by the example of Fig. 1 Shown in process 100 like that.In another example, process 400 can as shown in Figure 1 one or more than one station execute (example Such as, process 400 can be executed by heating station 13, and can also be executed by tempering station 15).Process 400 includes multiple heating regions (for example, each heating region has one or more heating elements), and in some embodiments, heating region (" n ") Quantity can change and power capability, desired heating efficiency and/or control strategy can be based on.Continuously manage In the case where 102, using multiple processing regions (for example, at least two), the metallurgy of detection pipe 102 ahead of time is carried out in order to provide chance Feature, the metallurgical feature can provide feedback, continuous to obtain for use in the hot set point adjusted in subsequent heat region The required mechanical property of pipe 102.

Referring to Fig. 3 and Fig. 4, the disclosed set of control flow chart 300 and process 400 based on input variable.It receives and uses It is special in the set and geometry of steel chemical characteristic (SC, the Steel Chemistry) input value 302 for the band for constructing continuous pipe tubing string The set of property input value 304 (for example, diameter, wall thickness).Linear velocity input value 306 (for example, pipe passes through speed of process 100) and The set of product input value 308 is heated (for example, final products type, desired final mechanical property, temperature set-point are retouched State, heater geometry characteristic used in heater types, process 100) it can be combined to describe and/or determine each add The time span in hot-cold but stage.

Material (for example, steel) chemical characteristic input value 302 is known before treatment (for example, they can be supplied by pipe Quotient is answered to provide).In some embodiments, the materials chemistry characteristic of pipe 102 can be appointed as falling into preset range, and Variation in the range can lead to a kind of product, from the lower tolerance interval of steel chemical characteristic to steel chemical characteristic Higher tolerance interval has the yield strength range of 16ksi or bigger.In some embodiments, materials chemistry characteristic inputs Value 302 may include the description of the chemical characteristic of alternative parameter, such as carbon equivalent, Ti/N ratio and steel it is any other appropriate Chemical characteristic.The chemical characteristic information, which can be used for limiting, is suitable for heating system (for example, having one or more part/regions Heating system) target power reference value, and can be used zoom factor from linear velocity input value 306 and geometrical property input value 304 modify the value and power reference.

Geometrical property input value 304 describes the geometry value (for example, length, diameter, thickness of pipe wall) of pipe 102.Geometrical property is defeated It is commonly known before the beginning of heat treatment process 100 to enter value 304, and these geometry values are used as process control logic Geometrical property input value 304.In some embodiments, the actual geometry of pipe 102 can be specified unambiguously.For example, Any other contact appropriate of ultrasonic technique, hall effect sensor or the geometrical property for measurement pipe 102 can be used Or non-contact process carrys out the practical wall thickness of measurement pipe 102.In some embodiments, if necessary (for example, depending on this Kind of influence of the measurement to final pipe characteristic), such device can be offline, and replaces and predetermined value can be used (for example, specification of manufacturer).In some embodiments, geometrical property input value 304 can be by occurs either periodically or continuously It updates, and can be used to occurs either periodically or continuously update control system.

In some embodiments, the wall thickness in typical continuous pipe can be changed according to some thousandths of inch.When examining When considering taper transitions, this variation would generally be dramatically increased, for example, from 0.190 inch to 0.204 inch (4.826 millimeters to 5.182 millimeter).This wall thickness change not will lead to target temperature significant changes, and target temperature is based on tempering model, the tempering mould Type realizes desired mechanical property using acceptable technology in the product of output.For example, from 0.190 inch to 0.204 In the case where the taper transitions of inch (4.826 millimeters to 5.182 millimeters), it is suitable for the target of 110ksi grade (759kPa) product Temperature can only at most change 2 degrees Celsius.In some embodiments, on product characteristic significantly affect may not be mainly from Target temperature, but the response from relatively thin or thicker material to heating process.For example, if all variables remain unchanged, And thicker material is heated with identical power output in the same equipment, then the gained temperature of continuous pipe will It can be lower.The lower temperature may cause continuously to manage yield strength with higher at taper transitions.For example, steel after tempering Mechanical property can increase with the reduction of temperature.Therefore, the thicker portion for being heated to lower temperature with higher can be bent Take intensity.

In some embodiments, it can change the chemical characteristic of material along the process that continuous pipe tubing string welds biasing weld seam And wall thickness, change the chemical characteristic and wall thickness of material with can dramatically sometimes, such as in the case where taper tubing string.It is described in detail herein Process 300 in consider such change.For example, the wall thickness change in the predetermined expected margin of tolerance for straight wall pipe In the case of, by the detection biasing weld seam before the pipe heating station 13 for entering Fig. 1.Wall thickness measuring value can be used as geometrical property The part of input value 304, to adjust the quantity of power for being applied to the subsequent heating period.Feedforward control system will also adjust subsequent add The value and power reference of thermal region, to compensate influence of the wall thickness to gained temperature.When biasing weld seam passes through heating region, temperature can be fast Speed is stabilized to target temperature.When materials chemistry characteristic changes, similar control will be executed.

Referring now to Figure 4, determining the wall thickness of the geometrical property input value 304 of pipe 102 during dimensional measurement process 404 And/or other variables.As the part for determining geometrical property input value 304, the first heating region (austenitizing area is being led to Domain) 406 inlet (for example, at or near the entrance of pipe heat treatment station 13 and/or the inlet of pipe tempering station 15 or attached Dimensional measurement process 404 closely) is executed in real time.The real-time wall thickness readings including throat depth are used as updating for heating region 406 value and power reference (P_reffN) 414 process part.Materials chemistry characteristic input value 302, linear speed angle value 308 and product The combination of geometrical property input value 304 is fed in the model calculated the target temperature of pipe 102.It is obtained using model Target temperature and linear velocity input value 306 calculate value and power reference 414.

Heating region 406 is set to calculated 414 (P of value and power reference_reffN).When pipe 102 passes through heating region 406 When, the temperature of pipe 102 increases.In some embodiments, heating region 406 can execute at least one of austenitization Point.Temperature taking process 408 monitor pipe 102 406 exit of heating region temperature (for example, pass through pyrometer, thermal imaging Instrument, thermocouple are monitored).Temperature reading is used for tube temperature degree by will measure at 408 and the target that is suitable for heating region 406 Temperature is compared to closed control loop (for example, feedback line 410) backward.The target temperature that the temperature measured and model are obtained Degree is compared, and control loop using target temperature and measures the difference between temperature and modify according to austenitization Value and power reference 414.414 (the P of value and power reference that the difference passes through adjusting first area_reffN) carry out closed control loop.

In some embodiments, the temperature corresponding to modified value and power reference 414 can be fast implemented, and can be with The changes in material for compensating pipe 102, to generate uniform high-quality product.In some embodiments, this can reduce pipe 102 Single part a possibility that being heat-treated to incorrect temperature.The property of product is such that with incorrect characteristic Part deformation may be made to concentrate (for example, if yield strength is relatively lower than the yield strength in peripheral part) or cause The relatively hard part for concentrating deformation in adjacent area is (for example, if yield strength is relatively higher than bending in peripheral part Take intensity).

The temperature measured at 408 is also fed to forward (for example, via line 412) next heating region, in Fig. 4 It is illustrated as heating region 420.In some embodiments, heating region 420 can execute treatment process or become processing The part in region (for example, heating region 13 or tempered area 15).The wall thickness measured based on input value 302 to 308, at 404 424 (the P of value and power reference suitable for heating region 420 is determined with the temperature that measures at 408_reffN+1).In target temperature and Difference between the temperature that the exit of heating region 406 (for example, heating region N) measures is used as input to set heating zone The value and power reference in domain 420 (for example, heating region N+1).In austenitizing heating process, using the chemical characteristic of steel, produce Product geometrical property, feed rate, tube temperature degree and heater parameter determine the initial power reference value suitable for the first heating region. In some embodiments, by using feed forward method, reach target temperature, and can quickly compensate due to different chemistry Temperature change caused by characteristic, wall thickness etc..

Temperature taking process 409 monitor pipe 102 420 exit of heating region temperature (for example, pass through pyrometer, heat Imager, thermocouple are monitored).By comparing the tube temperature degree measured at 409 and the target temperature suitable for heating region 420 Degree, temperature reading is for closed control loop (for example, via feedback line 413) backward.The temperature measured and model are obtained Target temperature is compared, and control loop using target temperature and measures the difference between temperature according to austenitization To modify value and power reference 424.424 (the P of value and power reference that the difference passes through adjusting first area_reffN+1) controlled back to be closed Road.

In some embodiments, it can be via the measured value that line 412 is fed forward and measured by another temperature sensor Value.After pipe 102 is heated the heating of region 406, pipe 102 is subsequently into heating region 420.The measured temperature of pipe can be with It is obtained at point between the outlet of heating region 406 and the entrance of heating region 420, and the measured value can be fed forward To determine the power level for being heated to heating region 420.

When pipe 102 is handled by heat treatment process 400, due to the power fluctuation in drive motor, in pipe The reasons such as power, there may be variations for linear velocity input value 306 (for example, linear velocity of continuous pipe).The variation of this speed can be led The variation of actual temperature and target temperature is caused, but target temperature can't significant changes.Change of line speed causes the institute of pipe 102 Obtain the variation of temperature.For example, in the case where all heating variables (for example, power, frequency, equipment) keep constant, linear velocity Decline can (for example, by exposure to heating equipment time increase) cause temperature to increase, this will lead to the surrender of final products Intensity is lower (for example, generally, higher temperature can reduce the yield strength characteristic after tempering, although some steel may show Different behavior out).

In some embodiments, encoder, laser aid, video camera or for determining pipe 102 can be used in linear velocity Any other proper technology of the linear velocity of uncoiling part measures.This measurement provides real time speed information, is used as linear speed Input value 306 is spent with the value and power reference for controlling each heating region 406,420.It therefore, can be special with Active Compensation geometry The variation of property (for example, wall thickness), linear velocity and/or materials chemistry characteristic, so as to reduce they along tubing string whole length to pipe The influence of 102 mechanical property.In some embodiments, similar course control method for use can be directed to other types of heat treatment (normalizing, tempering etc.) carries out, as herein for described in austenitizing and drawing process.

Referring again to FIGS. 3, control flow chart 300 shows the exemplary control procedure suitable for single heating region.For example, control Flow chart 300 can show the process of heating region 406 and/or heating region 420 for control figure 4.

Target output temperature value 310 describes predetermined temperature, for example, for executing selected heat treatment operation (such as Ovshinsky Body/tempering or any other heat treatment operation appropriate) temperature.

Previous zones temperature value 312 describes temperature when pipe 102 leaves previous treatment process (for example, obtaining at 408 And it is fed to the measured value of heating region 420 forward).Based between previous zones temperature 312 and target output temperature value 310 Difference determines value and power reference 314.

Value and power reference 314 is used to configure heating element 320 (for example, power that setting is applied to it).In some implementations In example, heating element 320 can be Induction heater, infrared heater, or pipe 102 can be heated to target output temperature Any other suitable device of value 312.In some embodiments, heating element 320 can be located at the entrance 110 of Fig. 1 and go out Between mouth 112.When pipe 102, which is heated the heating of element 320, is then departed from heating element 320, measurement pipe Outlet Temperature value 322. Feedback pipe Outlet Temperature value 322 is based on the temperature difference value 324 between target temperature value 310 and pipe outlet temperature 322 backward To modify the value and power reference 314 in closed control loop.Pipe outlet temperature 322 is also provided as output valve 330 for other Heat treatment process uses.For example, the output valve can be the value fed forward on online 412.

It should be understood that being retouched in paragraph [0031] into [0054] as before about treating stations 13 and 15 (referring to Fig. 1) The feedforward control system stated may also include one or more cooling stations, be configured to carry out it is cooling (for example, quenching station 15 and/or Cooling stations 17).Cooling stations may include that cooling element and/or environment are cooling.Cooling element can be cooler, one or more Quench tank, impulse-spray fluid tip and other cooling systems known in the art.In some embodiments, it can be based on Predeterminated target cooling temperature and temperature (for example, the temperature measured during temperature taking process 409) is measured to determine by cooling down Stand provide cooling effect amount.

Fig. 5 is the chart 500 for showing exemplary testing fatigue result.In testing fatigue, continuous pipe carries out under stress Testing fatigue.Among other variables, invalidation period number and the internal pressure of the given material by using when construction pipe generate Circumference stress it is related, or under constant pressure testing tube when it is related with the variation of yield strength because this is converted into The changed circumference stress of practical yield strength relative to pipe.Chart 500 shows the variation of invalidation period number, is used as volume Minimum yield strength (SMYS, Specified Minimum Yield Strength) is determined (for example, according to the manufacture of listed specification The specified minimum yield strength of steel pipe) function.Such as the outer diameter (OD) having be 2 inches (50.8mm), wall thickness (WT) be 0.204 inch (5.182mm), radius of curvature be 48 inches (1.2192m) 110ksi (759kPa) pipeline in, in middle equipressure The variation of invalidation period number under power (for example, at 6000psi (41368.5kPa)) is:

DN/dYS (the YS=110ksi)=period of every psi 2.5

As shown in line 510.

It is spread in the example to define in the yield strength of wherein product with +/- 15ksi, then averagely YS will be 125ksi (862.5kPa) (for example, as shown in 110 (759kPa) to 140ksi (966kPa) range 520), and invalidation period number can In the range of 175 to 250 periods (for example, being indicated by range 530), +/- 17% error of practical fatigue life is indicated.

In some cases, if the producer of continuous pipe cannot be guaranteed characteristic in sufficiently narrow range, product End user may have to take conservative method for fatigue life, such as product is made to exit operation too early.However, passing through Using the heat treatment system and method for the disclosure, it is able to produce product of the characteristic in close limit, end user can benefit from energy Whole, the relatively long fatigue life for enough using the product, to increase the value of product.

In some cases, continuous pipe can suffer from being crushed, and collapse pressure may mechanical property to pipe it is sensitive.This Sample, in some applications it can be desirable to control yield strength to increase the collapse pressure of this certain material combinations object.Continuous In the case that the pipe producer cannot be guaranteed that characteristic is in enough close limits, the user of product may have to take guarantor for conquassation The method kept, such as compensated by increasing wall thickness (increasing weight).However, system and side by using the disclosure Method, user can be by that can guarantee that the characteristic in close limit is benefited, and end user can be directed to identical using opposite Relatively thin and lighter pipe, to increase the value of product.

In some cases, continuous pipe has been used in hydrogen sulfide (H₂S (it is referred to as acidic environment in the art in well) (sour service)).Performance (acid energy) in acidic environment is usually improved with the reduction of yield strength.It will to product The guarantee for being able to bear specific acidic environment depends on the technological ability that production has the product of sufficiently narrow range property.When continuous When the manufacturer of pipe cannot be guaranteed that its characteristic is in sufficiently narrow range, the user of product may have to take acid resistance Conservative method, this will reduce defined mechanical property, and be compensated by increasing wall thickness (increasing weight).However, By using the system and method for the disclosure, user can be by that can guarantee that the characteristic in close limit is benefited, end user It can be for identical using relatively thin and lighter pipe, to increase the value of product.

Example

Example is provided, shows and controls heat treatment process during manufacturing continuous pipe to provide uniform mechanical property.It is suitable Include: in the input of process control

(for constructing each band of continuous pipe tubing string) steel chemical characteristic (for example, chemical characteristic input value 302)

(for constructing each band of continuous pipe tubing string) steel wall thickness (for example, geometrical property input value 304)

Linear velocity (for example, linear speed angle value 306)

Heating technique (for the total length in each heating-cooling stage) (for example, heating product input value 308)

Suitable for power needed for the given output temperature or target temperature (for example, target temperature 310) for applying power.

Example: power control is to obtain accurate target temperature

Fig. 6 is to show the temperature due to caused by wall thickness change in controlled austenitization and uncontrolled austenitization Spend the chart 600 of variation.Chart 600 shows two continuous pipes with different size variation by austenitizing route (example Such as, process 100) processing after the exit of heating region temperature reading variation.

In this example, target is that the tubing string with substantially uniform chemical characteristic is generated between the tubing string of different wall thickness. For example, will usually have output temperature if heating power is kept constant when given wall thickness change is close to heating region Variation, the variation of output temperature is related to the new related mass change of wall thickness, but actually it can also depend on institute The validity of the one or more heating devices used.Once having calibrated the pass between power and temperature for given line size System, then the uniformity of temperature just may depend on the ability of system detection wall thickness change, and with by temperature change to along the corresponding of pipe Position corresponding mode applies required power regulation.

In the example of " no control ", route is with constant Power operation.As wall thickness reduces (line 610), temperature rises (line 620), until wall thickness reach 0.156 inch (3.9624mm) (at 622, about tubing string length about 70%), draw at this time Enter manually adjusting so that temperature to be reduced to and 0.175 inch of comparable value (region of (4.445 millimeters) wall thickness to power 624)。

In the example of " having control ", the larger change of wall thickness is introduced compared with " no control " example (for example, from 0.224 Inch is to 0.125 inch (5.6896 millimeters to 3.175 millimeters)) and handled by identical production line, however, its The middle detection system and control strategy for implementing to be directed to wall thickness change as described above.Before tubing string in 20% part, figure Table 600 is shown even if under constant nominal wall thickness (line 630), the control (line 640) of temperature can also be enhanced (for example, with Line 620 is compared to more stable), it shows even if when pipe has substantially invariable wall thickness, power control strategy can also improve heat treatment Process.

In shown example, power control is closed such that in " no control " example (at 642) 40% It is expected that thermal gradient model become obvious.Control system reopens at the 47% of tubing string, and is directed to remaining of tubing string Part stays open.Under process control such as described in this application, relative to the variation observed in without control example, temperature Degree variation reduces 83%.Although the example of " having control " shows wall thickness from thickness to thin variation, which can be in wall Work in the both direction of thickness variation (for example, from thin to thick, stablize or the thickness that changes at random).

Fig. 7 is the flow chart of the instantiation procedure 700 for heat treatment.In some embodiments, process 700 can be used for Execute the instantiation procedure 100 of Fig. 1 and/or the process 400 of Fig. 4.In some embodiments, some or all of process 700 can It is executed by the exemplary heating station 13 and/or exemplary tempering station 15 of Fig. 1.

At 705, receives length and continuously manage.For example, pipe 102 is arranged on spool 11 before being heat-treated.

At 710, the first heat treatment target value is received.For example, process 100 can be configured to by predetermined properties (such as, it is specified that Yield strength) assign pipe 102.

At 715, the continuous pipe of length is fed with scheduled feed rate.For example, pipe 102 can be according to scheduled linear velocity Pass sequentially through pipe heating station 13, pipe quenching station 14 and pipe tempering station 15.

At 720, the practical feed rate of the continuous pipe of length is determined.For example, due to power fluctuation, pipe in drive motor In tension etc. cause the variation of linear velocity input value 306 (for example, linear velocity of continuous pipe) to may cause the practical line of pipe 102 Speed is different from scheduled feed rate.In order to compensate for these variations, encoder, laser aid, video camera or use can be used Linear velocity is measured in any other suitable technology of the actual linear velocity for the uncoiling part for determining pipe 102.

At 725, one or more geometric dimensions of the part of the continuous pipe of length are determined.For example, can be with measurement pipe 102 The combination of outer diameter, internal diameter, wall thickness or these and other size characteristic.

At 730, the first heat treatment temperature is determined based on the first heat treatment target value.For example, can be by by pipe 102 Corresponding heat treatment temperature is heated to obtain known yield strength value.In some embodiments, the first heat treatment target Value can be the first heat treatment temperature.

At 735, added based on the first heat treatment temperature, practical feed rate, one or more geometric dimensions and first First heating element value of thermal element determines the first heat treatment power level.For example, specific used in the pipe heating station 13 Brand, model and heating technique can realize specific heating temperature under corresponding power level, therefore be directed to pipe heating station It is based on used heating technique to the power horizontal portion of 13 selections.In another example, pipe 102 is mobile fastlyer, pipe The time that 102 specific part is heated in pipe heating station 13 is shorter, therefore power level can be based in part on feeding speed Rate.It similarly, in some instances, will be relatively thick during same time amount compared with relatively thin and/or lesser pipe And/or biggish pipe is heated to the relatively high power level of mutually synthermal possible needs.

At 740, the first heating element is energized with the first heat treatment power level, and at 745, pipe is fed logical The first heat treatment station is crossed, which has first entrance, first outlet and the first therebetween heating element. For example, can be energized by the first heat treatment power level to one or more heating elements 320 shown in Fig. 3, to exist in pipe 102 Heating tube 102 when passing through pipe heating station 13 between entrance 110 and outlet 112.

At 750, before the selected portion of pipe leaves the first heat treatment station, the part of pipe is heated at the first heat Manage target value.For example, pipe 102 can be heated to scheduled temperature by heating element 320 before pipe 102 comes out from outlet 112.

In some embodiments, one or more pipe chemical characteristic values, and the first heat treatment power water be can receive It is flat to may be based on the one or more pipe chemical characteristic value.For example, the different steel alloys used when constructing pipe 102 can have Different corresponding austenitizing temperatures.

In some embodiments, can determine pipe in the first temperature of first access point, and the first heat treatment power Level may be based on the first temperature.For example, the pipe warmed when pipe is by entrance 110 can be more less than relatively cold pipe needs Temperature increases, it is therefore desirable to less heating power.In some embodiments, can in the temperature of inlet measurement pipe 102, And the value may be used as a part for determining the process of the power level selected for heating element 320.

In some embodiments, can at first outlet measurement pipe second temperature, and first heat treatment power Level may be based on second temperature.For example, the temperature taking process 408 of Fig. 4 is held after pipe 102 is exposed to heating region 406 Row, and the Outlet Temperature value measured can be fed back as determining a part of of value and power reference 414 calculated.In this way, institute The Outlet Temperature value measured can use in closed-loop control system, and the closed-loop control system is for controlling by heating region 406 And/or quantity of power used in heating element 320.

In some embodiments, pipe can be quenched with by the part after the first thermal treatment zone is left in the part It is cooled to predetermined hardening heat.For example, at the stage 204 of Fig. 2, be rapidly cooled during hardening phase 208 process it Before, pipe 102 can be heated to scheduled austenitizing temperature.

In some embodiments, some or all of process 700 can be repeated any number appropriate.For example, pipe 102 can be heated, and can measure temperature, and pipe 102 can be heated again and temperature can be again measured, entirely Portion carries out in the heating station 13 and/or tempering station 15 of Fig. 1.

In some embodiments, some or all of process 700 can repeat in the treating stations of selection.For example, pipe 102 can be heated one or more heating element heats in region 406, and can measure temperature.The measurement can be fed back Value can feed the measured value forward to control the heating amount provided in heating region 406 to control by heating region The heating amount that one or more heating elements in 420 provide.Pipe 102 can based on the second measured value by heating region 420 again Heating, and temperature can be measured again in the exit of heating region 420, all in the heating station of Fig. 1 13 and/or tempering station 15 Interior progress.

In some embodiments, it can receive the second heat treatment target value；It can be based on the second heat treatment temperature come really Fixed second heat treatment temperature；The second temperature of pipe can be determined at second entrance；Second heat treatment power level can be based on Second heat treatment temperature, practical feed rate, one or more geometric dimensions, the second heating element value of the second heating element are come It determines；And it can be based on the second heat treatment target value, practical feed rate, one or more geometric dimensions, the second heating element The second heating element value and second temperature the second heating element is energized with the second heat treatment power level；Pipe can be fed By the second heat treatment station, the second heat treatment station includes second entrance, second outlet and the second heating element, and can be in institute The selected portion for stating pipe leaves the second heat treatment station and the part of pipe is heated to the second heat treatment target value before.For example, can To be surveyed before (for example, at gap 108) reheating after the cooling in hardening phase 208 and during tempering stage 210 The temperature (for example, measurement 408) of buret 102.The measured temperature can feed forward (for example, via line 412) for determining The power reference level 424 used suitable for heating region 420.

In some embodiments, it can receive scheduled cooling treatment target value, cooling treatment target value can be based on To determine cooling treatment temperature；Pipe can be fed through third treating stations, third treating stations have second entrance, second outlet with And at least one therebetween cooling treatment region；And before the selected portion of pipe leaves third treating stations, it can incite somebody to action The part of pipe is cooled to cooling treatment target value.For example, can be incited somebody to action by quenching station 14 (for example, during hardening phase 208) Pipe 102 is cooled to predetermined temperature.In another example, pipe 102 can be cooled with controllable rate during the stage 214, directly Reach predetermined temperature at halt 216.In some embodiments, the amount of cooling water of pipe 102 is supplied to (for example, cooler Power, coolant-flow rate) (for example, temperature taking process 409) can be measured based on temperature to control.

In some embodiments, pipe can be rolled up before the part enters the first heat treatment station and is aligned.For example, pipe 102 can be set on spool 11, and be aligned before pipe enters entrance 110 by straightener 12.

In some embodiments, the continuous pipe of length can be bent in rolls.For example, pipe 102 can weigh after the heat treatment Newly it is wound up on spool 18.

Example: variable acquires to define target temperature appropriate

For the purpose of temperature controlled processes as described herein, influences the mechanical property of given product and therefore influence target The correlated variables of temperature may include one of the following or multiple:

Chemical element relevant to the process: in the case where quenching and tempered steel, element may include (in terms of wt%): C, Si, Mn, Ni, Cr, Mo, Ti, N, B and V.

Wall thickness: for example, in the case where taper continuous pipe, the specification of certain bias commissure changes.

Heating technique (for example, induction heating) and heating model: for example, calculating for austenitizing and/or drawing process One or more of the rate of heat addition, heating sequence, maximum temperature and soaking time.

Suitable for resulting cooling rate under the conditions of the quenching model and various process of the cooling device installed: such as wall Thickness, caliber, linear velocity, water temperature, cooling length.

The available power of each inductor and power is applied on product in what sequence when heated.

Influence during austenitizing for the material model of austenite grain growth and its to harden ability and final response.

Material model suitable for quenching: for example, so as to the initial hardness as the result of given cooling rate estimation pipe.

Material model suitable for tempering: for example, so as to the Function Estimation final response as the tempering period, such as starting chemistry The influence of characteristic and precipitation state.

Example: chemical characteristic influences

Pass through range (for example, minimum value-maximum value) Lai Dingyi generally for each volume for the steel specification of particular steel, because If this target temperature is not modified to compensate the influence of these chemical characteristics variation, there are the variation of final mechanical property can It can property.Since the change of quenching hardness and the tempering resistance of material is with the temperature requirement of tempering can change with chemical characteristic.

In some instances, the specification for producing the selected steel of continuous pipe can have chemical characteristic in every batch of/every volume Variation.In some instances, each volume can change as shown in the table:

For example, carbon content (weight %C) can change by about the 16% of average value, and due to this according to the specification A little and the changeability of other constituent contents, resulting yield strength can change 14ksi to 19ksi, this mesh based on temperature Mark yield strength is not actively controlled to compensate.In the example of the historical knowledge with chemical characteristic actual change, mesh Mark temperature can be modified to most probable average value, and potentially variation can be reduced to about 5ksi to 7ksi.

However, since actual chemical characteristic can be known (for example, such as being provided by steel supplier), so herein The control system of description is designed to detect the variation in the possible different commissure of steel chemical characteristic (for example, different welding Material) and can correspondingly change temperature objectives along tubing string.The use of this control system is reduced due to chemical special Property and temperature measurement uncertainty caused by yield strength change.Calculated using system and method for the invention with it is above-mentioned Chemical characteristic changes corresponding realistic objective temperature range.

The required variation of target temperature is sufficiently large to fall into the limit of power of process control, so if carrying out appropriate Control can then compensate chemical characteristic variation.

Example: wall thickness influences

With variation (for example, the wall thickness change being deliberately introduced to increase loaded capability) phase as caused by taper Than the variation as caused by the tolerance of wall thickness is smaller.Even if adapting power to the effect of wall thickness change in the case where taper Fruit may be more important than the variation of target temperature (as discussed in above example).

Multiple embodiments of the invention have been described.It is to be understood, however, that do not depart from spirit of the invention and Various modifications can be carried out in the case where range.Therefore, other embodiment is also fallen into the range of the claim of this application.

Claims

1. a kind of system, comprising:

Feeder is configured to continuously manage with set rate feeding length；

First geometrical property sensor is configured to determine one or more geometric dimensions of the part of the continuous pipe of length；

First treating stations comprising first entrance, first outlet and therebetween at least the first thermal treatment zone, described One thermal treatment zone includes at least one first area heating element；And

Controller is configured to based on the first heat treatment target value, feed rate, one or more geometric dimensions and the firstth area First heating element value of domain heating element energizes first area heating element with the first heat treatment power level.

2. system according to claim 1, which is characterized in that the first heat treatment target value is managed based on one or more Chemical characteristic value.

3. system according to claim 1, which is characterized in that it further include the first temperature sensor, first temperature sensing Device is configured to measurement pipe in the first temperature of first access point, wherein the first heat treatment power level is also based on the first temperature.

4. system according to claim 1, which is characterized in that it further include second temperature sensor, second temperature sensing Device is configured to second temperature of the measurement pipe at first outlet, wherein the first heat treatment power level is also based on second temperature.

5. system according to claim 1, which is characterized in that first treating stations further include the second thermal treatment zone with And the temperature sensor between the first thermal treatment zone and the second thermal treatment zone.

6. system according to claim 1, which is characterized in that first treating stations further include the second thermal treatment zone with And the temperature sensor between the first thermal treatment zone and the second thermal treatment zone.

7. system according to claim 1, which is characterized in that first treating stations include austenitizing station.

8. system according to claim 1, which is characterized in that further include:

Second processing station comprising second entrance, second outlet and the additional thermal treatment zone of at least one therebetween, At least one additional thermal treatment zone includes at least one additional heating element；And

Additional temperature sensor is configured to measure the pipe in the second entrance for leading to second thermal treatment zone The temperature at place；

Wherein the controller is configured to based on second processing station target value, feed rate, one or more geometric dimensions, fits In the additional heating element at second processing station heating element value and second temperature with second processing station power level to described The energy supply of at least one additional heating element.

9. system according to claim 8, which is characterized in that the second processing station includes tempering station.

10. system according to claim 8, which is characterized in that the second processing station further includes that there is another add to add Another additional thermal treatment zone of thermal element.

11. system according to claim 1, which is characterized in that further include straightener, which is configured in the part Pipe is rolled up before into the first treating stations and carries out uncoiling.

12. system according to claim 1, which is characterized in that further include up- coiler, be configured to continuously manage length curved Qu Chengjuan.

13. system according to claim 1, which is characterized in that further include velocity sensor, which is configured to The practical feed rate of the continuous pipe of length is determined, wherein the first treating stations power level is based on practical feed rate.

14. system according to claim 8, which is characterized in that further include:

Third treating stations between first treating stations and second processing station are set, the third treating stations include quenching station, With first entrance, first outlet and therebetween and be configured to cool down at least one cooled region of the part.

15. one kind is for carrying out heat-treating methods to pipe, which comprises

Length is received continuously to manage；

Receive the first heat treatment target value；

It is continuously managed with scheduled feed rate feeding length；

Determine one or more geometric dimensions of the part of the continuous pipe of length；

The first heat treatment temperature is determined based on the first heat treatment target value；

The first heating based on the first heat treatment temperature, feed rate, one or more geometric dimensions and the first heating element Component value determines the first treating stations power level；

The first heating element is energized with the first treating stations power level；

For service pipe to make it through the first treating stations, which has first entrance, first outlet and therebetween First heating element；And

The part of pipe is heated to the first heat treatment target value before the selected portion of pipe leaves the first treating stations.

16. according to the method for claim 15, which is characterized in that further include:

First temperature of measurement pipe after heating；

The based on the first temperature, the first heat treatment temperature, feed rate, one or more geometric dimension and the second heating element Two heating element values determine second processing station power level；

The second heating element is energized with second processing station power level；And

The part of pipe is heated to the second heat treatment target value before the selected portion of pipe leaves the first treating stations.

17. according to the method for claim 15, which is characterized in that it further include receiving one or more pipe chemical characteristic values, Wherein determine the first treating stations power level also pipe chemical characteristic value based on one or more.

18. according to the method for claim 15, which is characterized in that further include first temperature of the determining pipe in first access point Degree, wherein determining that the first treating stations power level is also based on the first temperature.

19. according to the method for claim 15, which is characterized in that further include second temperature of the measurement pipe at first outlet Degree, wherein the first treating stations power level is also based on second temperature.

20. according to the method for claim 15, which is characterized in that further include right after the first treating stations are left in the part The pipe is quenched, which is cooled to scheduled hardening heat.

21. according to the method for claim 15, which is characterized in that further include:

Receive the second heat treatment target value；

The second heat treatment temperature is determined based on the second heat treatment temperature；

For service pipe to make it through second processing station, which includes second entrance, second outlet and therebetween At least one additional thermal treatment zone, at least one described additional thermal treatment zone includes at least one additional heating unit Part；

Determine second temperature of the pipe at the second entrance；

Based on the second heat treatment temperature, feed rate, one or more geometric dimension, at least one additional heating element second Heating element value determines second processing station power level；And

Based on the second heat treatment target value, feed rate, one or more geometric dimension, suitable for the additional heating of the second heating station The heating element value and the second temperature of element energize at least one additional heating element with second processing station power level； And

The part of pipe is heated to the second heat treatment target before the selected part of pipe leaves the second processing station Value.

22. according to the method for claim 21, which is characterized in that further include:

After the part of pipe is heated to the second heat treatment target value, the third temperature of measurement pipe；And

The part of pipe is heated to third heat treatment target value before the selected portion of pipe leaves second processing station.

23. according to the method for claim 15, which is characterized in that further include that at least part of pipe is cooled to predetermined temperature Degree.

24. according to the method for claim 23, which is characterized in that the cooling includes:

Receive cooling treatment target value；

Cooling treatment temperature is determined based on cooling treatment target value；

For service pipe to make it through third treating stations, which includes second entrance, second outlet and therebetween At least one cooling treatment region；And

The part of pipe is cooled to cooling treatment target value before the selected portion of pipe leaves third treating stations.

25. according to the method for claim 15, which is characterized in that further including will before the part enters the first treating stations Pipe volume aligning.

26. according to the method for claim 15, which is characterized in that further include that the continuous pipe bending of length is coiled.

27. according to the method for claim 15, which is characterized in that further include the practical feeding speed of the continuous pipe of determining length Rate, wherein the first treating stations power level is also based on practical feed rate.