CN113305471A - Material preheating equipment for welding of power station - Google Patents
Material preheating equipment for welding of power station Download PDFInfo
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- CN113305471A CN113305471A CN202110487837.3A CN202110487837A CN113305471A CN 113305471 A CN113305471 A CN 113305471A CN 202110487837 A CN202110487837 A CN 202110487837A CN 113305471 A CN113305471 A CN 113305471A
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- annular duct
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
Abstract
The invention discloses a material preheating device for welding a power station, which comprises four outer semi-annular duct pieces, wherein one end of each outer semi-annular duct piece is movably provided with a connecting strip, one end of each outer semi-annular duct piece is fixedly provided with a medium-frequency far-infrared heater, and the inner wall of each outer semi-annular duct piece is rotatably provided with an inner semi-annular duct piece. According to the invention, the threaded rod is respectively in threaded connection with the driving block and the fixing pieces through rotation of the threaded rod, the two fixing pieces drive the two horizontally adjacent connecting plates to approach each other, the connecting plates drive the movable blocks through the connecting blocks to enable pressure oil in the corrugated pipe to extrude the piston through the communicating holes and the communicating cavities to drive the piston rod and the clamping head to clamp materials, at the moment, the welding gun can be placed at the position of a welding port, and the welding position is subjected to preheating treatment through the medium-frequency far-infrared heater, so that the purpose of maintaining the materials and stably improving the welding quality is achieved.
Description
Technical Field
The invention relates to the technical field of P91 steel welding, in particular to a preheating device for a welding material of a power station.
Background
The P91 steel has high-temperature endurance strength and creep rupture resistance, and compared with the T22(10CrMo910) steel, the wall thickness of the pipe is reduced by 50 percent under the condition of the same use temperature and pressure; compared with austenitic steel, the high-temperature-resistant austenitic steel has the advantages of small expansion coefficient, good thermal conductivity, small hot cracking tendency and relatively low price, so that the P91 steel becomes the preferred steel grade of high-temperature and high-pressure pipelines such as a high-temperature superheater box, a main steam pipeline and the like, the P91 steel is easy to generate cold cracks during welding and the toughness of a welding seam is reduced, and the welding quality of the P91 steel is affected, so that the material needs to be subjected to preheating treatment.
However, in the prior art, when the welding device is actually used, the material is not convenient to clamp during preheating treatment, and the welding quality is further influenced during welding.
Disclosure of Invention
The invention aims to provide a preheating device for materials for welding of a power station, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the device comprises four outer semi-annular duct pieces, a connecting strip is movably arranged at one end of each outer semi-annular duct piece, a medium-frequency far-infrared heater is fixedly arranged at one end of each outer semi-annular duct piece, an inner semi-annular duct piece is rotatably arranged on the inner wall of each outer semi-annular duct piece, a fixed pipe is fixedly arranged at the front side end of one end of each inner semi-annular duct piece, a movable block is movably arranged on the inner wall of each fixed pipe, a corrugated pipe is fixedly arranged at one end of each movable block and fixedly arranged on the inner wall of each fixed pipe, a communicating cavity is formed in each inner semi-annular duct piece, a piston cylinder is fixedly arranged on the inner wall of each inner semi-annular duct piece, a piston is movably arranged on the inner wall of each piston cylinder, a piston rod is fixedly arranged at the bottom of each piston rod, a clamping head is fixedly arranged at the, the connecting block activity runs through and extends to the outside of fixed pipe, the fixed activity ring that is provided with of one end of connecting block, the fixed surface of activity ring is provided with the connecting plate, the one end activity of connecting plate is provided with the driving block, the front side end and the back side of driving block are all fixed and are provided with the stationary blade, the middle part activity of driving block and stationary blade is equipped with the threaded rod.
Preferably, four outer semi-annular section of jurisdiction divide into two sets ofly, and two sets of outer semi-annular section of jurisdiction set up for symmetry axis symmetry about the horizontal axis of connecting strip mid point, every group the one end of intermediate frequency far infrared heater opposite face forms the welding mouth, other fixedly connected with link is equallyd divide to the front side end and the back side end of connecting strip, and the link passes through the bearing and rotates the surface of connection at the threaded rod, other fixedly connected with piece of turning round is equallyd divide to the front side end and the back side end of threaded rod.
Preferably, the piston rod movably penetrates through and extends to the bottom of the piston cylinder, the clamping head is of a spherical structure constructed by rubber materials, the communicating hole is formed in one end, corresponding to the position of the fixed pipe, of the inner semi-annular duct piece, the corrugated pipe, the communicating hole, the communicating cavity and the piston cylinder are communicated in sequence, and pressure oil is arranged inside the corrugated pipe.
Preferably, the drive block is polygonized structure, the one end of the corresponding drive block position of connecting plate is equipped with the dovetail groove, and the size looks adaptation of dovetail groove and drive block, the middle part of drive block and stationary blade all sets up threaded hole, and the surface threaded connection of the inner wall of threaded hole and threaded rod, the connecting plate is located between two stationary blades, the guide way has been seted up to the lateral wall of the corresponding connecting block position of fixed pipe, and the surface swing joint of the inner wall of guide way and connecting block.
Preferably, the movable groove has been seted up to the one end that the corresponding outer semi-annular section of jurisdiction of connecting strip put, and outer semi-annular section of jurisdiction swing joint is at the inner wall of movable groove, the rotation groove has been seted up to the inside that the corresponding movable groove of connecting strip put, the rotation groove is located the both ends of movable inslot portion, the inner wall rotation in rotation groove is connected with the tooth post, tooth post fixed connection is in the bottom of the corresponding connecting strip position one end of outer semi-annular section of jurisdiction.
Preferably, the toothed plate is meshed on the surface of the toothed column, the accommodating groove is formed in the inner part of the corresponding toothed plate position of the connecting strip, the bottom of the top of the connecting strip is uniformly connected with arc sleeves, and the arc sleeves are fixedly connected to the surface of the outer semi-annular duct piece.
Preferably, the inner wall of the corresponding inner semi-annular duct piece position of the outer semi-annular duct piece is provided with a limiting sliding groove, the inner wall of the limiting sliding groove is movably connected with a limiting strip, and the limiting strip is fixedly connected with the surface of the inner semi-annular duct piece.
Preferably, the one end fixedly connected with installation piece that the connecting strip position was kept away from to outer semi-annular section of jurisdiction, and through bolt fixed connection between two vertical adjacent installation pieces, spacing recess has been seted up on the surface of fixed pipe, the spacing lug of one end fixedly connected with of the corresponding spacing groove position of activity ring, and the inner wall swing joint of the surface of spacing lug and spacing recess.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the threaded rod rotates to be respectively in threaded connection with the driving block and the fixing pieces, the two fixing pieces drive the two horizontally adjacent connecting plates to approach each other, the connecting plates drive the movable blocks through the connecting blocks to extrude the piston to drive the piston rod and the clamping head to clamp materials through the communicating holes and the communicating cavities, at the moment, a welding gun can be placed at the position of a welding port, and the welding position is preheated through the medium-frequency far-infrared heater, so that the purpose of maintaining the materials and stably improving the welding quality is achieved;
2. the invention also provides a rotating groove, a toothed column and a toothed plate, when two vertically adjacent outer semi-annular duct pieces are closed, the toothed column drives the toothed plate to move to the inside of the accommodating groove, the toothed plate does not hinder the rotation of the inner semi-annular duct pieces any more, and when the two vertically adjacent outer semi-annular duct pieces are opened, the toothed column drives the toothed plate to move to a position between the two inner semi-annular duct pieces, so that the outer semi-annular duct pieces and the inner semi-annular duct pieces are prevented from rotating relatively, the toothed plate can play a role in limiting the inner semi-annular duct pieces, so that the two vertically adjacent outer semi-annular duct pieces can be opened only when the connecting part of the two inner semi-annular duct pieces is positioned at the toothed plate, the arc-shaped sleeve is arranged, the relative rotation of the connecting strip and the outer semi-annular duct pieces can be stabilized, and the limiting sliding groove and the limiting strip are arranged, the rotation of the outer semi-annular duct piece and the inner semi-annular duct piece can be stabilized and guided.
Drawings
FIG. 1 is a front view of an overall structure of a preheating device for welding materials of a power station according to the present invention;
FIG. 2 is an enlarged view of the structure at A in the overall diagram 1 of the preheating equipment for welding materials in a power station according to the present invention;
FIG. 3 is a front sectional view of the overall structure of a preheating device for welding materials in a power station according to the present invention;
FIG. 4 is an enlarged view of the structure at B in FIG. 3 of the whole preheating apparatus for welding material in power station of the present invention;
FIG. 5 is a front sectional view of a connecting plate structure of a material preheating device for welding in a power station according to the present invention;
FIG. 6 is a sectional top view of a fixed pipe structure of a material preheating device for welding in a power station according to the present invention;
FIG. 7 is a side view of the whole structure of a preheating device for welding materials of a power station.
In the figure: 1. an outer semi-annular segment; 2. an inner semi-annular segment; 3. a fixed tube; 4. a movable block; 5. a bellows; 6. a communicating cavity; 7. a piston cylinder; 8. a piston; 9. a piston rod; 10. a clamping head; 11. connecting blocks; 12. a guide groove; 13. a movable ring; 14. a connecting plate; 15. a drive block; 16. a fixing sheet; 17. a threaded rod; 18. a connecting strip; 19. a connecting frame; 20. twisting the block; 21. a medium frequency far infrared heater; 22. welding the opening; 23. a movable groove; 24. a rotating groove; 25. a tooth post; 26. a toothed plate; 27. accommodating grooves; 28. an arc-shaped sleeve; 29. a limiting chute; 30. a limiting strip; 31. a limiting bump; 32. a communicating hole; 33. a threaded hole; 34. mounting blocks; 35. and a limiting groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: the heat exchanger comprises outer semi-annular duct pieces 1, the number of the outer semi-annular duct pieces 1 is four, connecting strips 18 are movably arranged at one ends of two vertically adjacent outer semi-annular duct pieces 1, medium-frequency far-infrared heaters 21 are respectively and fixedly arranged at one ends of opposite surfaces of two horizontally adjacent outer semi-annular duct pieces 1, inner semi-annular duct pieces 2 are rotatably connected to the inner walls of the outer semi-annular duct pieces 1, a fixed pipe 3 is fixedly arranged at the front side end of one end of each inner semi-annular duct piece 2, a movable block 4 is movably connected to the inner wall of the fixed pipe 3, a corrugated pipe 5 is fixedly arranged at one end of the movable block 4 corresponding to the position of each inner semi-annular duct piece 2, a communicating cavity 6 is formed in each inner semi-annular duct piece 2, a piston cylinder 7 is fixedly arranged on the inner wall of each inner semi-annular duct piece 2, a piston 8 is movably connected to the inner wall of each piston cylinder 7, and a piston rod 9 is fixedly arranged at the bottom of each piston 8, the bottom fixed mounting of piston rod 9 has clamping head 10, the fixed surface of movable block 4 installs connecting block 11, the outside of fixed pipe 3 is run through and extended to in the activity of connecting block 11, the one end fixed mounting that 4 positions of movable block were kept away from to connecting block 11 has movable ring 13, the fixed surface of movable ring 13 installs connecting plate 14, the one end swing joint that movable ring 13 was kept away from to connecting plate 14 has driving block 15, the equal fixed mounting in preceding side of driving block 15 and back side has stationary blade 16, the middle part activity of driving block 15 and stationary blade 16 is equipped with threaded rod 17.
Four outer semi-annular section of jurisdiction 1 divide into two sets ofly, and two sets of outer semi-annular section of jurisdiction 1 sets up for symmetry axis symmetry about the horizontal axis of connecting strip 18 mid point, and the one end of every group intermediate frequency far infrared heater 21 opposite face forms welding mouth 22, and the preceding side and the back side of connecting strip 18 are equallyd divide and are do not fixed mounting have link 19, and link 19 passes through the bearing and rotate the surface of connecting at threaded rod 17, and the preceding side and the back side of threaded rod 17 are equallyd divide do not fixed mounting have and are turned round piece 20.
The piston rod 9 activity runs through and extends to the bottom of piston cylinder 7, and the clamping head 10 is the spherical structure that rubber materials found, and the intercommunicating pore 32 has been seted up to the one end of the corresponding fixed pipe 3 position of interior semi-annular section of jurisdiction 2, and bellows 5, intercommunicating pore 32, intercommunication chamber 6 and piston cylinder 7's inside all are linked together in proper order, and the inside of bellows 5 is equipped with pressure oil.
Drive block 15 is polygonized structure, the one end of the corresponding drive block 15 position of connecting plate 14 is equipped with the dovetail groove, and the size of dovetail groove and the big or small looks adaptation of drive block 15, screw hole 33 has all been seted up at the middle part of drive block 15 and stationary blade 16, and the surface threaded connection of the inner wall of screw hole 33 and threaded rod 17, connecting plate 14 is located between two stationary blades 16, guide way 12 has been seted up to the lateral wall of the corresponding connecting block 11 position of fixed pipe 3, and the surface swing joint of the inner wall of guide way 12 and connecting block 11.
The inner wall of the corresponding interior semi-annular section of jurisdiction 2 position of outer semi-annular section of jurisdiction 1 has seted up spacing spout 29, and the inner wall swing joint of spacing spout 29 has spacing 30, the surface of semi-annular section of jurisdiction 2 including spacing 30 fixed mounting.
Outer semi-annular section of jurisdiction 1 keeps away from the one end fixed mounting of connecting strip 18 position has installation piece 34, and through bolt fixed mounting between two vertical adjacent installation pieces 34, spacing recess 35 has been seted up on the surface of fixed pipe 3, and the one end fixed mounting of the corresponding spacing recess 35 position of activity ring 13 has spacing lug 31, and the surface of spacing lug 31 and the inner wall swing joint of spacing recess 35.
The working principle is as follows: when in use, the invention relatively rotates and opens two vertically adjacent outer semi-annular duct pieces 1, puts the material to be welded between the two vertically adjacent outer semi-annular duct pieces 1, enables the intermediate frequency far infrared heater 21 and the welding port 22 to correspond to the welding position, reversely rotates the two vertically adjacent outer semi-annular duct pieces 1 at the moment, closes the two vertically adjacent outer semi-annular duct pieces 1, fixes the outer semi-annular duct pieces 1 through the bolt matching installation block 34 at the moment, enables the torsion block 20 to drive the threaded rod 17 to rotate through rotating the torsion block 20, further enables the threaded rod 17 to be respectively in threaded connection with the driving block 15 and the fixing plate 16 through the threaded hole 33, further enables the two driving blocks 15 to approach each other, and enables the driving block 15 to cooperate with the fixing plate 16 to drive the two horizontally adjacent connecting plates 14 when the two driving blocks 15 approach each other because the connecting plate 14 is positioned between the two fixing plates 16, the connecting plate 14 drives the movable block 4 through the connecting block 11 to extrude the pressure oil in the bellows 5 into the communicating cavity 6 through the communicating hole 32, the pressure oil enters the piston cylinder 7 in the communicating cavity 6, the extrusion piston 8 drives the piston rod 9 and the clamping head 10 to clamp the material, at the moment, the welding gun can be arranged at the position of the welding opening 22, the welding position is preheated through the intermediate frequency far infrared heater 21, the outer semi-annular duct piece 1 can move relative to the inner semi-annular duct piece 2, the connecting strip 18 and the outer semi-annular duct piece 1 can rotate relative to the inner semi-annular duct piece 2, the welding of the welding gun is prevented from being influenced by the connecting strip 18, the purpose of maintaining the material stability and improving the welding quality is realized, through the arrangement of the rotating groove 24, the tooth column 25 and the toothed plate 26, when two vertically adjacent outer semi-annular duct pieces 1 are closed, at the moment, the tooth column 25 drives the toothed plate 26 to move to the inside of the accommodating groove 27, the toothed plate 26 no longer obstructs the rotation of the inner semi-annular duct piece 2, and when the two vertically adjacent outer semi-annular duct pieces 1 are opened, the tooth column 25 can drive the toothed plate 26 to move to the position between the two inner semi-annular duct pieces 2, the relative rotation between the outer semi-annular duct pieces 1 and the inner semi-annular duct pieces 2 is prevented, and the toothed plate 26 can be arranged to limit the inner semi-annular duct pieces 2, so that only when the joint of the two inner semi-annular duct pieces 2 is located at the toothed plate 26, the two vertically adjacent outer semi-annular duct pieces 1 can be opened at the moment, the arc-shaped sleeve 28 is arranged to stabilize the relative rotation between the connecting bar 18 and the outer semi-annular duct pieces 1, and the limiting sliding groove 29 and the limiting bar 30 are arranged to stabilize and guide the rotation between the outer semi-annular duct pieces 1 and the inner semi-annular duct pieces 2, when welding, the following points need to be noticed:
1. the energy of a welding line is controlled, the impact toughness of a welding line is reduced when T91/P91 steel is welded, the energy of the welding line is excessive, so that the structure is overheated, widmannstatten structures, coarse grains and net-shaped grain boundaries are formed, and the welding line is embrittled;
2. preheating before welding and maintaining interlayer temperature, wherein the hardenability of T91/P91 steel is high, so that a proper preheating temperature is adopted before welding, a certain interlayer temperature is maintained in the welding process, the cooling speed of a welding line and a heat affected zone can be properly reduced, the hardenability tendency of a welding joint is reduced, meanwhile, the hydrogen overflow is facilitated, cold cracks are prevented from being generated, the preheating temperature before welding is 220-350 ℃, and the interlayer temperature is maintained at 200-250 ℃;
3. the correct operation process is mastered, the T91/P91 steel has poor molten iron fluidity during welding, the wire feeding is uniform, the phenomenon that the root is not melted is avoided, special attention is paid to moving to the edge of a groove after a crater is filled during arc closing, crater cracks are avoided, and a special welding machine with arc closing control is preferably adopted during welding. The interlayer cleaning is strict, so that the defects of slag inclusion and unmelted slag are avoided;
4. the post-welding heat treatment, namely the cooling of the T91/P91 steel after welding is a transformation process from austenite to martensite, and because the austenite inoculation period of the steel is longer, the steel must be cooled in air after welding to ensure that the austenite is completely transformed into martensite, so that the strength of the joint is ensured.
The key welding technology comprises the following steps:
1. the P91 steel has high-temperature creep rupture strength, low thermal expansion, good thermal conductivity, good processability and oxidation resistance. However, the P91 steel is a medium-high alloy, the total content of alloy elements is more than 13 percent, the Ms point is increased, and the martensite is obtained in the weld joint structure even under the air cooling condition, which shows that the steel has large quenching tendency and strong cold crack sensitivity. When the P91 steel is welded without preheating, the welding joint has larger cold crack tendency and the toughness of the steel welding seam is far lower than that of the base metal no matter the welding joint is welded on the surface or the inner part of the welding joint by manual arc welding or argon tungsten arc welding.
2. And selecting the material of the machine tool. The main problem of welding the P91 steel is that the impact toughness is too low, so when selecting the welding material, the welding material with good operation process performance and low price should be selected as far as possible on the premise of ensuring the impact performance. The welder is an inverter welder with stable current and voltage and high-frequency attenuation. The heat treatment equipment adopts intermediate frequency far infrared heat treatment equipment combining intermediate frequency induction heating and flexible ceramic resistance heating functions.
3. And (5) a process link. The method is realized by adopting a proper welding process, such as selection of welding materials, processing of grooves, preheating and maintaining of certain interlayer temperature in the welding process, control of welding line energy, thickness of a welding layer, heat treatment after welding and the like.
4. And (5) quality control. The quality control in the construction process implements three control principles of 'before, in the process of construction and after' to ensure the construction quality to be complete and achieve the expected target.
In the welding process:
1. when welding, the welding line energy must be strictly controlled, and low-parameter multi-layer multi-pass welding is adopted. The wire can be selected to be too small, otherwise, because of fast cooling, a superheat zone is easy to generate a coarse martensite structure, the plasticity and the toughness are reduced, and cold cracks occur under the action of diffused hydrogen and welding stress. The linear energy is generally controlled below 26 kJ/cm.
2. During welding, a kneading wire feeding method is adopted, the welding wires are uniformly fed, the condition that the root is not melted is avoided, during arc ending, the arc pit is filled, then the arc pit moves to the edge of the groove for arc ending, the generation of arc pit cracks is avoided, and during welding, a special welding machine with arc ending control is preferably adopted. The interlayer cleaning is strict, and the defects of slag inclusion and unmelted slag are avoided.
3. Air cooling at 90 deg.c and post-welding heat treatment. The purpose of the post-weld heat treatment is to reduce the residual stress of the welded joint, improve the weld joint and the heat affected zone structure, temper the hardened structure, and thereby improve the performance of the structures. The excessive temperature of the postweld heat treatment can promote the accumulation and growth of carbides and reduce the strength of a welded joint; the heat treatment temperature is too low to achieve the tempering effect, and in order to obtain a welded joint with good comprehensive mechanical properties, the postweld heat treatment temperature is 730-770 ℃.
4. The heat treatment adopts a medium-frequency far-infrared heater 21 with the combination of medium-frequency induction heating and flexible ceramic resistance heating functions, the temperature difference can be controlled within 20 ℃, and the maximum temperature difference does not exceed 50 ℃.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a power station welding is with material preheating equipment, includes outer semi-annular section of jurisdiction (1), its characterized in that: the number of the outer semi-annular duct pieces (1) is four, one end of each outer semi-annular duct piece (1) is movably provided with a connecting strip (18), one end of each outer semi-annular duct piece (1) is fixedly provided with a medium-frequency far-infrared heater (21), the inner wall of each outer semi-annular duct piece (1) is rotatably provided with an inner semi-annular duct piece (2), the front side end of one end of each inner semi-annular duct piece (2) is fixedly provided with a fixed pipe (3), the inner wall of each fixed pipe (3) is movably provided with a movable block (4), one end of each movable block (4) is fixedly provided with a corrugated pipe (5), the corrugated pipe (5) is fixedly arranged on the inner wall of each fixed pipe (3), a communicating cavity (6) is formed in each inner semi-annular duct piece (2), the inner wall of each inner semi-annular duct piece (2) is fixedly provided with a piston cylinder (7), and the inner wall of each piston cylinder (7) is movably provided with a piston (8), the bottom mounting of piston (8) is provided with piston rod (9), the bottom mounting of piston rod (9) is provided with clamping head (10), the fixed surface of movable block (4) is provided with connecting block (11), connecting block (11) activity runs through and extends to the outside of fixed pipe (3), the fixed activity ring (13) that is provided with of one end of connecting block (11), the fixed surface of activity ring (13) is provided with connecting plate (14), the one end activity of connecting plate (14) is provided with drive block (15), the preceding side of drive block (15) is all fixed with back side and is provided with stationary blade (16), the middle part activity of drive block (15) and stationary blade (16) is equipped with threaded rod (17).
2. The material preheating device for the power station welding as set forth in claim 1, wherein: four outer semicircular duct piece (1) divide into two sets ofly, and two sets of outer semicircular duct pieces (1) are symmetry axis setting about the horizontal axis of connecting strip (18) mid point, every group the one end of intermediate frequency far infrared heater (21) opposite face forms weld joint (22), other fixedly connected with link (19) are equallyd divide to the preceding side of connecting strip (18) and the back side, and link (19) rotate the surface of connecting in threaded rod (17) through the bearing, other fixedly connected with piece (20) are equallyd divide to the preceding side of threaded rod (17) and the back side.
3. The material preheating device for the power station welding as set forth in claim 1, wherein: the clamping head (10) is of a spherical structure constructed by rubber materials, the communicating hole (32) is formed in one end, corresponding to the position of the fixed pipe (3), of the inner semi-annular pipe piece (2), the corrugated pipe (5), the communicating hole (32), the communicating cavity (6) and the piston cylinder (7) are communicated in sequence, and pressure oil is arranged inside the corrugated pipe (5).
4. The material preheating device for the power station welding as set forth in claim 1, wherein: drive block (15) are polygonized structure, the one end of the corresponding drive block (15) position of connecting plate (14) is equipped with the dovetail groove, and the size of dovetail groove and the big or small looks adaptation of drive block (15), threaded hole (33) have all been seted up at the middle part of drive block (15) and stationary blade (16), and the surface threaded connection of the inner wall of threaded hole (33) and threaded rod (17), connecting plate (14) are located between two stationary blades (16), guide way (12) have been seted up to the lateral wall of the corresponding connecting block (11) position of fixed pipe (3), and the surface swing joint of the inner wall of guide way (12) and connecting block (11).
5. The material preheating device for the power station welding as set forth in claim 1, wherein: activity groove (23) have been seted up to the one end that connecting strip (18) corresponding outer semi-ring section of jurisdiction (1) position, and outer semi-ring section of jurisdiction (1) swing joint is at the inner wall of activity groove (23), rotation groove (24) have been seted up to the inside that connecting strip (18) corresponding activity groove (23) position, rotation groove (24) are located the inside both ends of activity groove (23), the inner wall rotation that rotates groove (24) is connected with tooth post (25), the bottom of tooth post (25) fixed connection corresponding connecting strip (18) position one end outside semi-ring section of jurisdiction (1).
6. The material preheating device for power station welding as set forth in claim 5, wherein: toothed plate (26) is meshed on the surface of tooth post (25), holding tank (27) has been seted up to the inside of corresponding toothed plate (26) position of connecting strip (18), respectively fixedly connected with arc sleeve (28) are equallyd divide to the bottom at the top of connecting strip (18), and arc sleeve (28) fixed connection is on the surface of outer semi-ring section of jurisdiction (1).
7. The material preheating device for the power station welding as set forth in claim 1, wherein: spacing spout (29) have been seted up to the inner wall that outer semi-annular section of jurisdiction (1) corresponding interior semi-annular section of jurisdiction (2) position, and the inner wall swing joint of spacing spout (29) has spacing (30), the surface of semi-annular section of jurisdiction (2) including spacing (30) fixed connection.
8. The material preheating device for the power station welding as set forth in claim 1, wherein: the one end fixedly connected with installation piece (34) of connecting strip (18) position is kept away from in outer semi-annular section of jurisdiction (1), and through bolt fixed connection between two vertical adjacent installation pieces (34), spacing recess (35) have been seted up on the surface of fixed pipe (3), the one end fixedly connected with spacing lug (31) of the corresponding spacing recess (35) position of activity ring (13), and the inner wall swing joint of the surface of spacing lug (31) and spacing recess (35).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110487837.3A CN113305471B (en) | 2021-04-30 | 2021-04-30 | Material preheating equipment for welding of power station |
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| CN202110487837.3A CN113305471B (en) | 2021-04-30 | 2021-04-30 | Material preheating equipment for welding of power station |
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| CN113305471A true CN113305471A (en) | 2021-08-27 |
| CN113305471B CN113305471B (en) | 2022-11-29 |
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| CN104043938A (en) * | 2014-06-18 | 2014-09-17 | 山东电力建设第一工程公司 | Pipeline welding butt adjusting device |
| CN105437106A (en) * | 2015-12-09 | 2016-03-30 | 无锡西源电力装备厂 | Pipe machining and fixing clamp |
| CN108080876A (en) * | 2017-11-14 | 2018-05-29 | 中冶天工（天津）装备制造有限公司 | A kind of fast automatic bonding machine of pipeline |
| CN108788562A (en) * | 2018-08-12 | 2018-11-13 | 繁昌县亘通智能装备有限公司 | A kind of pipe fitting welding quick welding device |
| CN208267818U (en) * | 2018-04-18 | 2018-12-21 | 西南石油大学 | A kind of oil exploitation preventer being easily installed |
| CN209614725U (en) * | 2018-12-20 | 2019-11-12 | 湖南天禹设备安装有限公司 | Positioning device is used in a kind of welding of pressure pipeline |
| CN211162707U (en) * | 2019-12-13 | 2020-08-04 | 苏州华达环保设备股份有限公司 | Protection device for welding circular seam of barrel of wind power generation tower |
| CN211708524U (en) * | 2019-11-27 | 2020-10-20 | 徐州宇立建设工程有限公司 | Steel pipe cutting equipment convenient to fixed clamp is tight |
| CN212978111U (en) * | 2020-07-20 | 2021-04-16 | 武汉东湖学院 | Pipeline installation mounting fixture convenient to adjust |
-
2021
- 2021-04-30 CN CN202110487837.3A patent/CN113305471B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043938A (en) * | 2014-06-18 | 2014-09-17 | 山东电力建设第一工程公司 | Pipeline welding butt adjusting device |
| CN105437106A (en) * | 2015-12-09 | 2016-03-30 | 无锡西源电力装备厂 | Pipe machining and fixing clamp |
| CN108080876A (en) * | 2017-11-14 | 2018-05-29 | 中冶天工（天津）装备制造有限公司 | A kind of fast automatic bonding machine of pipeline |
| CN208267818U (en) * | 2018-04-18 | 2018-12-21 | 西南石油大学 | A kind of oil exploitation preventer being easily installed |
| CN108788562A (en) * | 2018-08-12 | 2018-11-13 | 繁昌县亘通智能装备有限公司 | A kind of pipe fitting welding quick welding device |
| CN209614725U (en) * | 2018-12-20 | 2019-11-12 | 湖南天禹设备安装有限公司 | Positioning device is used in a kind of welding of pressure pipeline |
| CN211708524U (en) * | 2019-11-27 | 2020-10-20 | 徐州宇立建设工程有限公司 | Steel pipe cutting equipment convenient to fixed clamp is tight |
| CN211162707U (en) * | 2019-12-13 | 2020-08-04 | 苏州华达环保设备股份有限公司 | Protection device for welding circular seam of barrel of wind power generation tower |
| CN212978111U (en) * | 2020-07-20 | 2021-04-16 | 武汉东湖学院 | Pipeline installation mounting fixture convenient to adjust |
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| CN113305471B (en) | 2022-11-29 |
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