CN103350297A - Cooling device and method for butt welding of coiled tubing - Google Patents
Cooling device and method for butt welding of coiled tubing Download PDFInfo
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- CN103350297A CN103350297A CN2013102647628A CN201310264762A CN103350297A CN 103350297 A CN103350297 A CN 103350297A CN 2013102647628 A CN2013102647628 A CN 2013102647628A CN 201310264762 A CN201310264762 A CN 201310264762A CN 103350297 A CN103350297 A CN 103350297A
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Abstract
The invention discloses a cooling device and method for butting welding of coiled tubing. The cooling device systematically comprises cooling blocks, a water pump, a flow regulation device, a temperature measuring and controlling device, a connecting pipeline, a backwater supplying device and the like. During work, the copper cooling blocks which are matched with a to-be-welded coiled tubing are selected and mounted according to the outer diameter of the to-be-welded coiled tubing; and the connecting pipeline and a circuit are used for reducing heat effect of welding heat on a welded seam area when coiled tubing is welded, and the cooling speed of a connector and a welding heat effect area is increased, so that the width of the welding heat effect area is reduced, high-temperature dwell time is reduced, the grain growth tendency is slowed down, and the welding joint performance is improved.
Description
Technical field
The present invention relates to the materials hot working technical field, particularly a kind of continuous-tube butt welding cooling device and method.The various sizes and the yield strength grade that are applicable to use at present are 482.65-689.5Mpa(70-100Kpsi) the pipe-pipe butt welding of steel continuous-tube, also be applicable to other simultaneously and manage-manage butt welding and need to carry out the occasion that the welding point acceleration is cooled off.
Background technology
Continuous-tube (Coiled Tubing, be called for short CT, be known as again coiled tubing, coiled tubing, coiled pipe or coil pipe) refer to adopt metal material, mainly be that steel are made and can be coiled on major diameter (generally being about more than the 1m) reel, a kind of hundreds of rice that reaches is to the pipe that does not have joint of several kms.The continuous-tube operation technique that continuous-tube and working rig thereof form has a wide range of applications in fields such as oil exploration, drilling well, well-flushing, oil transportations, is described as " the omnipotent implement " of 21 century.
Continuous-tube is being played the part of very important role in the continuous-tube operation.In the work progress, be coiled on the reel continuous-tube through traction, stretching, bending turns to and again after the alignment, the work string as the construction operation medium transport is admitted to the down-hole; After the operation, the reel counter motion is dragged continuous-tube to pull by the down-hole and is enhanced, and again is wound on the reel, so that Reusability.Different actions, operating environment and running parameter, requiring continuous-tube to possess has good comprehensive mechanical property, can satisfy the drawing of complexity, presses, squeezes, expands, washes away, work under the comprehensive function condition such as corrosion and fatigue.
Studies show that ultra-fine grain is the key character of continuous-tube tubing on microscopic structure, obtains fine grain and ultra-fine grain by specific smelting, the operation of rolling, thereby form refined crystalline strengthening, is the assurance of the good comprehensive mechanical property of continuous-tube.In other words, the good comprehensive mechanical property of continuous-tube, the ultra-fine grain microscopic structure that mainly has based on tubing.
The tube and tube butt welding of continuous-tube is indispensable content during continuous-tube manufacturing and continuous-tube technology are used.Yet the sweating heat process can be impelled the grain growth of welding heat affected zone, causes property of welded joint to descend.For this reason, by certain cooling way, reduce the heat input in sweating heat process butt welded seam zone, Thermal Cycle to welding heat affected zone (HAZ) is controlled, reduce as much as possible width, the reduction high-temperature residence time of welding heat affected zone, thin brilliant the growing up of minimizing is effective guarantee and improve one of core technology of continuous-tube tube and tube butt girth welding seam structure property.
Summary of the invention
In order to overcome the defective of above-mentioned prior art, the object of the present invention is to provide a kind of continuous-tube butt welding cooling device and method, be used for when the continuous-tube tube and tube welds, reduce the heat effect in sweating heat process butt welded seam zone, the cooling velocity that adds quick coupling and welding heat affected zone, reach the width that reduces welding heat affected zone (heat affected zone, abbreviation HAZ), reduce high-temperature residence time, slow down Grain growth trend and improve the purpose of property of welded joint.
In order to achieve the above object, technical scheme of the present invention is:
A kind of continuous-tube butt welding cooling device, comprise water pump 2, water pump 2 is placed in the confession water recovery apparatus 6 that fills enough water, water pump 2 delivery ports link to each other with five-way joint 7 by pipeline, at water pump 2 outlet pipelines flow regulator 3 is installed, adjusting device 3 is connected with temperature measurement and control instrument 4, and five-way joint 7 is fixed on the dividing plate 8, and 4 joints on five-way joint 7 tops link to each other with 4 cooling block back with water inlet line 5 respectively and are connected to two cooling blocks that are oppositely arranged 1; Each cooling block 1 forms by two semicircle matrixes 9, is separately installed with 2 snap joints 10 on each semicircle matrix 9, is respectively entery and delivery port; 4 cooling block back with water inlet line 5 link to each other with 2 semicircle matrixes of each cooling block by being fixed on two snap joints on the cooling block.
Described 4 cooling block return pipings 5 are connected to the delivery port of cooling block 1 each semicircle matrix 9 and between the water recovery apparatus, wherein an end links to each other by snap joint 10 with two cooling blocks 1, and the other end links to each other with backwater joint on being fixed on dividing plate 8.
Described cooling block 1 external form is a cylinder that front end is frustum, wall thickness 10-20mm, each front end is that the cylinder of frustum is connected to form by hinge or loose-leaf 16 by two semicircle matrixes 9, cooling block 1 internal diameter is outer through identical with welded continuous-tube, each semicircle matrix 9 inside is processed with 2 straight holes 13 and 1 annular groove 15, UNICOM consists of the circulating water channel of sealing mutually, and straight hole 13 tail ends are connected with the water-in and water-out joint; The groove on circulating water channel top is bumped into and seals with ring-type bar shaped copper processing cover plate 14 wide, uniform thickness, one of cover plate of ring-type bar shaped copper processing is longer, one shorter, and when two semicircle matrixes fasten, the longer part of its cover plate will be inserted in the working groove of another semicircle matrix.
A kind of continuous-tube butt welding cooling means based on said apparatus may further comprise the steps:
Step 1, the solid thermocouple wire of point, the thermocouple wire point is welded in the body surface to be needed to play the effect of measuring temperature on the monitoring point of control maximum heating temperature or high-temperature residence time in welding process; Supporting with it copper cooling block 1 is selected and installed additional to external diameter according to continuous-tube to be welded, and copper cooling block 1 is 10～15mm apart from the pipe end distance;
The present invention realizes the variation within the specific limits of weld seam cooling velocity by the method for regulating the cooling block circulating water flow, and regulating has 2 kinds of modes, and a kind of is manual preset mode; Another kind is the temperature feedback regulative mode, and manually preset mode is to come adjust flux adjusting device 3 with controlled circulation discharge by manual mode before weldering or in the welding process; The method is applicable to the mature and stable situation of continuous-tube welding procedure; The temperature feedback regulative mode is to carry out thermometric at the place, control point that HAZ sets, take the maximum heating temperature at measuring point place or high-temperature residence time as sampled signal, the temperature signal that records is converted to the signal of telecommunication controls the adjusting that flow regulator 3 is able to controlled circulation discharge; By the control to the measuring point Thermal Cycle, reach the width that reduces welding heat affected zone, reduce high-temperature residence time, slow down Grain growth trend and improve the purpose of property of welded joint.
The present invention utilizes heat exchange pattern to realize what the pressure of butt welded seam was cooled off by install cooling block 1 additional at body.Before the welding, at the install secondary copper cooling block 1 of welded continuous-tube near symmetry on the body of weld seam, cooling block is tubular, and inwall and continuous-tube tube wall are fitted.During welding, the heat in nearly seam district is transmitted to cooling block by body, there is the water-in and water-out interface cooling block side, enter the sealing circulation canal of cooling block inside through water inlet from the current of water pump, take away heat, get back to for water recovery apparatus through delivery port and pipeline again, realize the cooling down of cooling block and the pressure cooling of butt welded seam HAZ.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the schematic diagram of cooling block 1, and wherein Fig. 2-A is front view, and Fig. 2-B is longitudinal cross-sectional view, and Fig. 2-C is side view.
Fig. 3 is for backwater part-structure sketch.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in detail.
With reference to Fig. 1: a kind of continuous-tube butt welding cooling device, comprise water pump 2, water pump 2 is placed in the confession water recovery apparatus 6 that fills enough water, pump outlet links to each other with five-way joint 7 by pipeline, at the water pump water outlet pipeline flow regulator 3 is installed, flow regulator 3 is connected with temperature measurement and control instrument 4, by regulate manually and and the folding size of temperature measurement and control instrument 4 control Flow-rate adjustment dual mode regulation gate valves change the uninterrupted of water pump; Five-way joint 7 is fixed on the dividing plate 8; 4 joints on five-way joint 7 tops link to each other with 4 cooling block back with water inlet line 5 respectively and are connected to two cooling blocks that are oppositely arranged 1; Each cooling block 1 forms by two semicircle matrixes 9, is separately installed with 2 snap joints 10 on each semicircle matrix 9, is respectively entery and delivery port; 4 cooling block back with water inlet line 5 link to each other with 2 semicircle matrixes of each cooling block by being fixed on two snap joints on the cooling block.
Described 4 cooling block return pipings 5 are connected to the delivery port of cooling block 1 each semicircle matrix 9 and between the water recovery apparatus, wherein an end links to each other by snap joint 10 with two cooling blocks 1, and the other end links to each other with backwater joint on being fixed on dividing plate 8.
With reference to Fig. 2, described cooling block 1 external form is a cylinder that front end is frustum, wall thickness 10-20mm, each " front end is the cylinder of frustum " connected to form by hinge or loose-leaf 16 by two semicircle matrixes 9, cooling block 1 internal diameter is outer through identical with welded continuous-tube, each semicircle matrix 9 inside is processed with 2 straight holes 13 and 1 annular groove 15, and UNICOM consists of the circulating water channel of sealing mutually, and the straight hole tail end is connected with the water-in and water-out joint; The groove on circulating water channel top is bumped into and seals with ring-type bar shaped copper processing cover plate wide, uniform thickness, one of cover plate of ring-type bar shaped copper processing is longer, one shorter, and when two semicircle matrixes fasten, the longer part of its cover plate will be inserted in the working groove of another semicircle matrix.Before the welding, folding by hinge or loose-leaf and buckle alignment pin are installed on the welded continuous-tube weld seam both sides by the determined position of welding procedure with copper water cooling piece hitch, the front end frustum is facing to weld seam, be convenient to welding operation and observation, tail end and water-in and water-out joint connect water pipe, inner diameter wall contacts applying with the continuous-tube body, thereby realizes the pressure cooling of weld seam HAZ.
Described water pump 2 adopts small-sized fresh water immersible pump, the parameters selection scope: exchange 220～240V, 50Hz; Power 100～300W; Maximum stream flow 3000～6000L/h; Lift 5～10m.Function is to provide cooling circulating water for copper water cooling piece.
Described flow regulator 3 is when water pump has flow regulating function, and manually preset and the temperature feedback Flow-rate adjustment of flow will directly utilize the flow regulator of water pump to realize.When water pump self does not possess flow regulating function, will adopt throttling to regulate (be called again and become valve regulation) method, namely at the water pump water outlet pipeline gate valve is installed, change the uninterrupted of water pump by the folding size of regulation gate valve.Although this method can cause certain loss of flood peak when reducing flow, very economical not, the method is simple and easy to do, and is still very suitable for using in short-term in small pump and the continuous-tube welding.The gate valve flow regulator is installed in the water pump water outlet pipeline, is used for manually presetting and the discharge of temperature feedback is regulated.
4) temperature measurement and control instrument is comprised of thermometric and amplification driving two parts.Temperature element adopts thermocouple, and selecting condition is that the highest measurement temperature is not less than 1300 ℃, and diameter is not more than 0.5mm, and low-cost nickel chromium triangle-nisiloy silk thermocouple is selected in suggestion.During work, the working end point of thermocouple is welded in welding heat affected zone need determines temperature controlled position by welding procedure; The free end of thermocouple is connected with the measuring circuit end that amplifies drive part.Amplify to drive and formed by major parts such as measuring circuit, voltage comparator, delay circuit, driving element relays.Measuring circuit receives the thermo-electromotive force signal that converts to from Thermocouple Temperature Signal, and voltage (according to the functional relation of thermo-electromotive force and the temperature) comparison of setting with voltage comparator, when the voltage of thermocouple meets and exceeds the voltage of setting, the output of voltage comparator will be overturn, difference according to the control parameter, further open through time-delay or the rear drive Flow-rate adjustment gate valve of not delaying time, reach the adjusting that flow increases.Temperature feedback is regulated the selections that can finish 2 kinds of control parameters according to the temperature test of Thermal Cycle: a kind of is control to measuring point place maximum heating temperature, the method is the thermo-electromotive force that comparative voltage is set as the predetermined maximum heating temperature in measuring point place, when the voltage of thermocouple meets and exceeds setting voltage, gate valve is driven directly, circulating cooling water flow increases, and realizes the control to the predetermined maximum heating temperature in measuring point place.Another kind is the control to measuring point place high-temperature residence time, the method is the thermo-electromotive force that comparative voltage is set as the predetermined high-temperature temperature in measuring point place, and delay circuit is set to predetermined high-temperature residence time, after the voltage of thermocouple meets and exceeds setting voltage, delay circuit begins timing, and when timing reaches the high-temperature residence time of setting, gate valve is driven, circulating cooling water flow increases, and realizes the control of the predetermined high temperature time of staying of measuring point place.
5) connecting line is comprised of water flowing pipeline, five-way joint, snap joint.Connected mode is seen Fig. 3, water from water pump enters from the five-way joint bottom, 4 joints by five-way top are assigned to each pipeline, the water that pumps into each pipeline enters circulating water channel in 4 semicircle matrixes (2 copper water cooling pieces) separately through the water inlet of copper water cooling piece, gets back to for water recovery apparatus through delivery port and pipeline again.Totally 8 of the pipelines that is connected with copper water cooling piece, 4 is back with water inlet line, is connected between five-way top joint and the cooling block water inlet; 4 is return piping, is connected between cooling block delivery port and the confession water recovery apparatus.Pipeline is selected the withstand voltage 0.6MPa of being not less than, and heatproof is not less than 80 ℃ PVC flexible pipe.For reducing the operation of the loss of flood peak and constructability, bore is not less than 4mm, and every sono-explorer is not more than 3m, all adopts snap joint to connect.
6) be that a volume is 30～50 liters uncovered container of adding a cover for water recovery apparatus, be used for conveying and the backflow of cooling water circulation.Basic structure such as Fig. 3, container are followed successively by water pump, flow gate valve, dividing plate from top to bottom, five-way joint, returning pipe joint are installed on the dividing plate and have the hole that passes through for pump power line and Flow-rate adjustment.
A kind of continuous-tube butt welding cooling means based on said apparatus may further comprise the steps:
Step 1, the solid thermocouple wire of point, the thermocouple wire point is welded in the body surface to be needed to play the effect of measuring temperature on the monitoring point of control maximum heating temperature or high-temperature residence time in welding process; Select and install additional supporting with it copper cooling block 1 according to the external diameter of continuous-tube to be welded, with as close as possible groove and do not hinder welding operation to be advisable, general control is about 10～15mm apart from the pipe end distance for copper cooling block 1;
Claims (4)
1. continuous-tube butt welding cooling device, it is characterized in that, comprise water pump (2), water pump (2) is placed in the confession water recovery apparatus (6) that fills enough water, pump outlet links to each other with five-way joint (7) by pipeline, at the water pump water outlet pipeline flow regulator (3) is installed, adjusting device (3) is connected with temperature measurement and control instrument (4), five-way joint (7) is fixed on the dividing plate (8), and 4 joints on five-way joint (7) top link to each other with 4 cooling block back with water inlet line (5) respectively and are connected to two cooling blocks that are oppositely arranged (1); Each cooling block (1) forms by two semicircle matrixes (9), and each semicircle matrix (on 9) is separately installed with 2 snap joints (10), is respectively entery and delivery port; 4 cooling block back with water inlet line (5) link to each other with (2) of each cooling block individual semicircle matrix by being fixed on two snap joints on the cooling block.
2. according to right 1 described a kind of continuous-tube butt welding cooling device, it is characterized in that, described 4 cooling block return pipings (5) are connected to the delivery port of each semicircle matrix (9) of cooling block (1) and supply between the water recovery apparatus, wherein an end links to each other by snap joint (10) with two cooling blocks (1), and the other end links to each other with backwater joint on being fixed on dividing plate (8).
3. according to right 1 described a kind of continuous-tube butt welding cooling device, it is characterized in that, described cooling block (1) external form is a cylinder that front end is frustum, wall thickness 10-20mm, each front end is that the cylinder of frustum is connected to form by hinge or loose-leaf (16) by two semicircle matrixes (9), cooling block (1) internal diameter is outer through identical with welded continuous-tube, each semicircle matrix (9) inside is processed with 2 straight holes (13) and 1 annular groove (15), UNICOM consists of the circulating water channel of sealing mutually, and straight hole (13) tail end is connected with the water-in and water-out joint; The groove on circulating water channel top is bumped into and seals with ring-type bar shaped copper processing cover plate (14) wide, uniform thickness, one of cover plate of ring-type bar shaped copper processing is longer, one shorter, and when two semicircle matrixes fasten, the longer part of its cover plate will be inserted in the working groove of another semicircle matrix.
4. based on a kind of continuous-tube butt welding cooling means of power 1 device, may further comprise the steps:
Step 1, the solid thermocouple wire of point, the thermocouple wire point is welded in the body surface to be needed to play the effect of measuring temperature on the monitoring point of control maximum heating temperature or high-temperature residence time in welding process; Supporting copper cooling block (1) is selected and installed additional with it to external diameter according to continuous-tube to be welded, and copper cooling block (1) is 10～15mm apart from the pipe end distance;
Step 2, connecting line; Cooling block (1) turnover water end (W.E.) is linked to each other by plastic tube with water pump (2) and dividing plate (8), guarantee that the water route is unimpeded;
Step 3, temperature measurement and control instrument (4) is linked to each other with thermocouple wire and flow regulator;
Step 4, will add 30-50L water for water recovery apparatus (6), guarantee the cooling effect of welding process Welded Joints;
Step 5, temperature adjusting begin welding, with temperature measurement and control instrument (4) and water pump (2) energising, make cooling device work.
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| CN201310264762.8A CN103350297B (en) | 2013-06-27 | 2013-06-27 | Cooling device and method for butt welding of coiled tubing |
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| CN201310264762.8A CN103350297B (en) | 2013-06-27 | 2013-06-27 | Cooling device and method for butt welding of coiled tubing |
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| CN103350297B CN103350297B (en) | 2015-05-13 |
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Cited By (4)
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| CN104264208A (en) * | 2014-09-30 | 2015-01-07 | 任晓东 | Cooling mechanisms of electroplating device of jack |
| CN105750772A (en) * | 2016-04-28 | 2016-07-13 | 中国石油天然气第建设公司 | Welding-bead interlayer temperature control device |
| CN111037159A (en) * | 2019-11-27 | 2020-04-21 | 合肥聚能电物理高技术开发有限公司 | Superconducting cable armor butt welding temperature control device and butt welding process |
| CN117066812A (en) * | 2023-10-17 | 2023-11-17 | 南通日旭重工科技有限公司 | Metal member welding device and welding process |
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| CN111037159A (en) * | 2019-11-27 | 2020-04-21 | 合肥聚能电物理高技术开发有限公司 | Superconducting cable armor butt welding temperature control device and butt welding process |
| CN117066812A (en) * | 2023-10-17 | 2023-11-17 | 南通日旭重工科技有限公司 | Metal member welding device and welding process |
| CN117066812B (en) * | 2023-10-17 | 2024-03-05 | 南通日旭重工科技有限公司 | Metal member welding device and welding process |
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