57 results about "Skelp" patented technology

The utility model relates to an auxiliary device for welding steel rings on pipe fittings and elbows. In order to fill the blank in the prior art, the bearing device comprises a base, a bearing seat, a bearing and a short pipe, the base comprises a base plate and an arc-shaped plate, a protruding block is arranged in the center of the base plate, the bearing seat comprises a hollow shell, the bottom of the hollow shell is hinged to the protruding block through a hinge shaft, the lower edge of the arc-shaped plate is connected to one side of the base plate, and a plurality of positioning holes are formed in the arc-shaped plate. A pin hole is formed in the corresponding position of the side wall of one side of the hollow shell, one of the pin hole and the positioning hole of the arc-shaped plate can coincide, a pin penetrates through the pin hole, a bearing hole is further formed in the hollow shell, a bearing is installed in the bearing hole, an inner flange is arranged on the inner wall of one side of the bearing, an annular pressing plate is arranged on the other side of the bearing, and the outer ring of the bearing is clamped between the inner flange and the annular pressing plate. The short pipe is arranged on the inner ring in a penetrating mode, and the pipe walls of the two ends of the short pipe are each provided with at least three radial threaded through holes with clamping screws. The steel ring welding device is convenient to use and suitable for being used when steel rings are welded on pipe fittings.

The utility model discloses a static sealing structure of a manhole of a hatch cover of a ship body, relates to the technical field of sealing structures, and solves the problems that a sealing gasket made of a large amount of salt and rubber materials can react with seawater, so that the performance of the sealing gasket is reduced, the sealing gasket is degraded and broken, and the service life of the sealing gasket is short. A manhole cover is installed on the upper side of the flange, a plurality of bolts which are distributed at equal intervals in the circumferential direction are installed on the manhole cover and the flange, and an embedding groove is formed in the upper end face of the flange. The sealing assembly is used for sealing the flange and the manhole cover; by installing the third sealing gasket and the lantern ring, the rubber sealing gasket can be prevented from being corroded by seawater, the service life of the rubber sealing gasket is prolonged, the sealing assembly is composed of the first sealing gasket and the second sealing gasket, and it can be effectively avoided that when the damaged sealing gasket is replaced, the service life of the rubber sealing gasket is prolonged. Crushed rubber gaskets are adhered to the flanges, so that cleaning is inconvenient.

The invention discloses a welding device capable of assisting dust removal and purification, and belongs to the technical field of welding dust removal. The welding device comprises a machine table, a curved pipe feeding mechanism, a short pipe feeding mechanism, a welding gun and a smoke exhaust mechanism; a curved pipe feeding mechanism used for driving a curved pipe to move is installed in the middle of the machine table, and a smoke discharging mechanism used for discharging welding smoke in the curved pipe is installed on the curved pipe feeding mechanism. A short pipe feeding mechanism used for continuously conveying short pipes is installed on the portion, located on the welding station, of the machine table. A welding gun used for welding the short pipe and the curved pipe together is fixedly mounted on the mechanical arm; the curved pipe feeding mechanism comprises a fixing table, a positioning and supporting structure, a rotary supporting assembly and a positioning and clamping assembly. The smoke discharging mechanism comprises a smoke discharging assembly, a traction assembly and a fixing assembly, the smoke discharging assembly is installed on the fixing table and the rotating column, the traction assembly is installed on the rotating installation frame, and the fixing assembly is installed on the smoke discharging assembly. By means of the mode, when small-size irregular pipelines are welded, welding smoke dust is discharged in time.

The utility model relates to the field of foundry equipment, concretely relates to a castings quenching device, including rotating basket subassembly, quenching liquid cooling subassembly, lifting assembly, support and temperature sensor. Rotating basket subassembly be equipped with the porous basket of a plurality of wing plates and the porous basket can be suspended and rotate, and the quenching liquid cooling subassembly is equipped with the barrel body with serpentine heat exchange pipe and the serpentine heat exchange pipe is communicated with cooling water source, and the barrel body is equipped with the liquid discharge pipe and is communicated with the liquid storage tank, and the top is equipped with the annular pipe of the liquid outlet short pipe with the liquid supply of liquid storage tank, and the barrel body is placed above lifting assembly and is driven by lifting assembly and can reciprocatingly ascend and descend, and the temperature sensor is connected on the cooling barrel subassembly, and the liquid temperature of quenching liquid in the barrel body can be dynamically detected. The castings quenching device can make the liquid temperature of quenching liquid homogenization and rapid cooling and can effectively control the liquid temperature, and can improve the quenching quality of castings.

The utility model relates to anode stick replacement technical field, especially a kind of auxiliary mechanism and in-service pipe fitting cathodic protection anode stick anti-infiltration replacement device, it includes, main component, the main component includes welded short pipe, set up on the pressure ball valve of welded short pipe;Auxiliary component, the auxiliary component includes the support piece set up on pressure ball valve, set up on the auxiliary piece of support piece, set up in the pusher of auxiliary piece, set up in the mounting piece of auxiliary piece;Wherein, the mounting piece is detachably connected with the support piece by the pusher;It can reliably, infiltration-free complete the installation and replacement operation of anode stick main body under pipeline operating state, improve the maintenance efficiency of cathodic protection system and the continuity and safety of pipeline operation, and can effectively block the infiltration path of water body in pipeline after anode stick installation after anode stick installation, ensure long-term sealing performance under pipeline operating state.

This invention belongs to the field of metal material processing technology, and relates to an annealing process for zirconium alloy thin-walled short tubes and its heat treatment loading bin. Based on the specifications of the uniform temperature zone of the vacuum annealing furnace chamber, the specifications of the material rack, the heating method, the loading capacity, the outer diameter and length of the tube, the gas absorption characteristics of the material, and the stability of the tooling structure, this invention specifically designs a loading bin for the heat treatment of thin-walled short tubes for vacuum annealing furnaces. Combined with an improved furnace loading method, adjusted annealing heating curves and annealing process parameters, the heat treatment loading bin is placed on the material rack or loading platform of the vacuum annealing furnace. The tooling is assembled and fixed, the thin-walled short tubes are neatly placed in the heat treatment loading bin, anti-oxidation measures are taken, and process parameters such as the heating curve, heating temperature, and holding time are set according to the furnace loading capacity and tube performance requirements. This ensures that the thin-walled short tubes do not undergo dimensional deformation or surface scratches after heat treatment, improves straightness, prevents surface oxidation, and improves heat treatment efficiency.

The application discloses a clothesline rod welding device and relates to the technical field of clothesline rod welding.The device comprises a workbench, the top of the workbench is provided with a supporting mechanism for stabilizing the butt joint of a long pipe and a short pipe, the top of the workbench is also provided with a pressing mechanism for avoiding the deviation of the long pipe, one side of the workbench is provided with a lifting mechanism for avoiding the droop of the long pipe, the side of the supporting mechanism is provided with an extruding mechanism for avoiding the deviation of the short pipe, and the side of the supporting mechanism is also provided with a pushing mechanism for pushing the short pipe to be attached to the surface of the long pipe. The two placing grooves are used for limiting the long pipe and the short pipe respectively through the supporting mechanism, the long pipe and the short pipe are naturally formed into a T-shaped structure that is perpendicular to each other, the end of the short pipe is accurately aligned with the long pipe, a rigid supporting structure is formed, the weight of the long pipe and the short pipe can be supported, the problems, such as skewing and eccentricity, that are common in manual operation are effectively avoided, and the symmetry and stability of the overall structure of the clothesline rod are significantly improved.

The utility model discloses a large-diameter pipeline pressure testing device which comprises pressure testing short pipes arranged at the two ends of a solid pipeline, one side of each pressure testing short pipe is provided with a blind pipe used for sealing the corresponding pressure testing short pipe, and the other side of each pressure testing short pipe and the solid pipeline are the same in specification and are welded and fixed, so that the pressure testing short pipes are communicated with the interior of the solid pipeline. The blind plate is arranged in the pressure test short pipe, a manhole communicated with the interior of the pressure test short pipe is arranged at the upper end of the pressure test short pipe, a pressing device used for feeding pressure and detecting is arranged on the blind pipe, and reinforcing ribs bypassing the pressing device are arranged on the inner side and the outer side of the blind plate. The reinforcing ribs are fully welded with the blind plate and the end of the pressure test short pipe, so that the strength of the blind plate is guaranteed, when the pressure of the pipeline is tested, safety accidents caused by the fact that water for the pressure test of the pipeline leaks into a groove in a short time due to deformation and fracture of the blind plate can be avoided to a great extent for personnel, and the safety of the pressure test personnel is guaranteed to a great extent.

The invention discloses a grouting machine which is characterized in that a sliding block is fixedly sleeved outside a short grout inlet pipe of a grouting gun, a connecting rod with a locking piece is arranged at the bottom of a grouting pipe, and the sliding block is in sliding connection with the connecting rod and is fixed and limited through the locking piece; the block switch is arranged between the grouting pipe and the short grout inlet pipe and is kept connected with the grouting pipe and the short grout inlet pipe, the peripheral side of the block switch is fixed to the inner wall of the elastic rubber pipe, and when the sliding block drives the short grout inlet pipe to move towards the grouting pipe, the conical tip of the block switch opens outwards, and the grouting amount is increased; a bulge is laterally arranged on an inner pipe of the grouting control pipe, and a sliding groove for accommodating the bulge is laterally formed in an outer pipe of the grouting control pipe; one end of the outer pipe is vertically welded with the grouting pipe, and the other end is connected with the grouting extension pipe through a bolt; one end of the inner pipe is arranged in the grouting pipe and is provided with a rubber grout inlet, when the protrusion moves in the direction close to the grouting pipe, the grouting amount is reduced, and when the rubber grout inlet abuts against the grouting pipe, grouting is stopped. The grouting device can provide stable grouting pressure and high-precision grouting amount, and is easy to disassemble, clean and replace parts.

The application discloses a large-diameter long-distance conveying pipeline welding multifunctional butt welding jig frame, and belongs to the technical field of building construction, which comprises a jig frame supporting system, a butt system and a winter and rainy season construction temporary sealing system, the jig frame supporting system is mainly composed of H-shaped main supporting frames, the butt system is mainly composed of fine adjustment butt components and coarse adjustment positioning components, and the winter and rainy season construction temporary sealing system is mainly composed of upper horizontal rods, top horizontal connecting rods, slope connecting rods, riveted ground short pipes and sealing sheds. The application has the butt welding function of large-diameter long-distance pipeline welding, and can further provide a temporary sealing local working environment for winter and rainy season construction according to the weather condition of a construction site. The application does not need to dig many large working pits, is convenient for pipeline foundation treatment, has small work load, and can provide a reasonable space for the application of a track adsorption type welding robot, thereby providing a technical support for the application of the welding robot, and effectively improving engineering quality and work efficiency.

The utility model discloses a steel plate for supporting a foundation pit, which comprises a front connecting steel plate, an upper butt joint, a left lap joint, a right lap joint and a U-shaped short pipe, and a rear connecting steel plate is arranged behind the front connecting steel plate; the bent lapping edges of the left lapping head and the right lapping head are arranged at the short edges of the steel plates, so that the adjacent steel plates can be tightly attached and flat when the short edges are connected, the space which is 1.2 times of the thickness of the steel plates is reserved between the two steel plates, the space is specially used for inserting and fixing the steel plates on the upper layer, and the steel plates can be quickly positioned and mounted in the assembling process; even in a large-scale foundation pit supporting project, the splicing work of the steel plates can be rapidly completed, the steel plates can be universally used in foundation pit supporting projects with different scales and requirements through the bent landing edges with standard sizes and specific lengths, the lap joint components and the reserved steel plate gaps, the steel pipes can abut against the U-shaped pipes between the two sets of steel plates, and therefore the steel plates can be conveniently spliced. And a stable transverse connecting structure is formed.

The utility model provides a kind of COT surface thermocouple of quick disassembly, belong to thermocouple technical field, including junction box, protection conduit and thermocouple, the protection conduit includes the first straight pipe section, elbow section and second straight pipe section that are sequentially arranged, one end of the thermocouple is arranged in protection conduit, and its other end is connected with junction box, the surface of furnace tube is provided with short pipe, channel adapted to the first straight pipe section is provided on the short pipe, the side wall of the short pipe is opened with threaded hole along radial direction, the threaded hole is connected with tight bolt, the side wall of the first straight pipe section is opened with recess portion corresponding threaded hole, and the end of the tight bolt is abutted on recess portion to form fixed.The utility model is fixed by setting short pipe on the surface of furnace tube and by tight bolt to thermocouple, when needing to replace thermocouple, only need to unscrew tight bolt, and the whole thermocouple assembly can be extracted from short pipe, to realize the quick, non-destructive replacement of thermocouple.

The invention relates to the technical field of building construction, and particularly discloses a steel pipe triangular truss supporting system and a construction method.The steel pipe triangular truss supporting system comprises a plurality of supporting units, and every two adjacent supporting units are fixedly connected through a connecting rod assembly; each supporting unit comprises chord members and web members, and further comprises first connecting assemblies and second connecting assemblies, every two adjacent chord members are connected and fixed through the corresponding first connecting assembly, and the chord members and the web members are connected and fixed through the corresponding second connecting assemblies; the first connecting assembly comprises a connecting pipe and first connectors arranged at the two ends of the connecting pipe, and the two first connectors are connected with the two chord members correspondingly; the second connecting assembly comprises a pipe sleeve, and the pipe sleeve is slidably arranged on the chord member in a sleeving mode; the outer wall of the pipe sleeve is fixedly connected with two connecting short pipes, the tail ends of the connecting short pipes are provided with second connectors, and the two ends of the web member are fixedly connected with the pipe sleeve through the second connectors. A non-welding mode is adopted in the connecting mode, and the quality defect caused by welding can be avoided.

The invention discloses a condensation tank body welding device, and relates to the technical field of welding equipment, the condensation tank body welding device comprises a first conveying table, a supporting table and a second conveying table which are in butt joint in sequence, and the first conveying table is used for conveying a main body tank to a through groove of the supporting table; the posture adjusting mechanism comprises a first lifting rod, a disc, a frustum, a first power part, a second power part and a posture adjusting part and is used for adjusting the position and direction of the main body tank; the limiting box is vertically arranged on the supporting frame, the short pipe is contained in the limiting box, and the arc-shaped side wall of one side of the limiting box is matched with the arc-shaped end face of the short pipe. The positioning mechanism is arranged on the supporting frame and used for fixing the short pipe on the second layer in the limiting box. The butt joint mechanism is arranged on the outer side of the supporting table and used for bearing and clamping the short pipe on the first layer in the limiting box and then transferring the short pipe to a through hole corresponding to the main body tank on the supporting table. The welding mechanism is arranged on the butt joint mechanism and used for welding the short pipe to the main body tank. According to the scheme, the main body tank can be automatically adjusted to a specific state, the short pipe is automatically butted and perforated, and automatic welding is performed.

The utility model discloses a special pressure test short pipe for a pipe gallery pipeline, which comprises a short pipe body and a bypass valve, a blind plate is mounted in the short pipe body, two exhaust pipes are mounted at the top of the short pipe body, and an exhaust valve is mounted at the top of each exhaust pipe; two pressure gauges are mounted at the top of the short pipe body; according to the utility model, the short pipe body, the exhaust pipe, the water pipe and the bypass pipe are arranged and are integrally assembled in a welding manner, so that the trouble of assembly is saved, the device can be conveniently and directly connected with a pipeline to be subjected to pressure test, and the pipeline pressure test is quick, simple and convenient; construction and pressure testing can be conducted in a crossed mode with one pressure testing section as the period, the working face is expanded, the installation speed is increased, rapid installation and pressure testing of the pipelines in the pipe gallery are achieved, the construction period is shortened, and construction is convenient.

The invention discloses a welding machining device for an exhaust copper pipe, and relates to the technical field of welding, the welding machining device comprises a machining table and a supporting frame, and the supporting frame is fixedly mounted at the top of the machining table; the connecting frame is fixedly mounted on the surface of the supporting frame; the electric telescopic rod is fixedly mounted at the top of the processing table; the rotating shaft is fixedly installed at the output end of the electric telescopic rod, and the electric telescopic rod is used for driving the rotating shaft to stretch out and draw back; the copper pipe clamping device is fixedly mounted at the output end of the rotating shaft, and the copper pipe clamping device is used for clamping a copper pipe; and the driving motor is fixedly installed at the top of the machining table, and the situation that the end, away from the copper pipe clamping device, of the copper pipe inclines downwards, consequently, butt joint of the copper pipe and the short pipe is not accurate, deviation is generated in the follow-up welding process, and the welding effect is affected is prevented.

The utility model relates to the technical field of sprinkling machine auxiliary material manufacturing equipment, in particular to a welding tool for various short connecting pipes for a sprinkling machine, which comprises a rack, a positioning component I used for welding a ball head short pipe and a ball hole short pipe and a positioning component II used for welding a tail end short pipe and a first span short pipe are arranged at the upper part of the rack, the first positioning assembly and the second positioning assembly are divided through a vertical rod, a first limiting plate and a second limiting plate are welded to the two sides of the vertical rod correspondingly, the height of the first limiting plate is larger than that of the second limiting plate, an operator can be helped to place different types of short pipes at the corresponding positions during feeding through the height difference design, and the mistake proofing effect is achieved; compared with the prior art that different welding tools need to be used when surface parts of different types of short pipes are welded, the welding equipment can meet the requirement for fixing of welding of the different types of short pipes at the same time, and the equipment investment during production of the sprinkling machine truss is reduced.

The utility model discloses a carrier for metal casting, which relates to the technical field of metal casting and comprises a carrier body and a casting barrel, the carrier body comprises a long pipe and a short pipe which are perpendicular to each other and are fixedly connected, driving wheels are mounted at two ends of the short pipe, a rotating shaft is rotatably arranged in the long pipe, and the rotating shaft is connected with the long pipe. The casting barrel is fixedly installed at one end of the rotating shaft, a gland is installed at one end of the long pipe in a hinged mode and can cover the casting barrel, a control box is fixedly connected to the other end of the long pipe, and an opening and closing control mechanism and a rotating control mechanism are installed in the control box. Through the arrangement of the gland, the opening and closing control mechanism and the rotating control mechanism, the opening and closing of the gland and the inclination and resetting of the casting barrel can be conveniently realized, and the risk of molten iron splashing or accidental inclination of the casting barrel is effectively reduced, so that the potential safety hazard is reduced, and the safety of operators is guaranteed.

The utility model belongs to the field of constructional engineering, and particularly relates to a steel frame pipe enclosure rapid dismounting and mounting system based on modular connection, which comprises a fixing plate, an inserting rod is downwards fixed by the fixing plate, a vertical connecting pipe is upwards fixed by the fixing plate, a vertical steel pipe is sleeved by the vertical connecting pipe, and a short bumping post is welded at the middle lower part of the vertical steel pipe; the middle connecting piece and the top connecting piece are connected to the vertical steel pipe in a sleeving mode, the middle connecting piece comprises a transverse short pipe and a vertical short pipe, and the top connecting piece and the middle connecting piece are structurally different in that a transverse stop lever is welded to the top end of the vertical short pipe; the middle steering part and the top steering part are hinged to steering short pipes; and a transverse long pipe is inserted into the transverse short pipe or the steering short pipe. According to the invention, the device can be quickly assembled and disassembled, does not need a special tool for assembly, improves the construction efficiency, can be freely combined, is suitable for different enclosure size requirements, can flexibly adjust the angle, and meets the enclosure requirements of different construction terrains.

The invention relates to the technical field of chemical pipeline body maintenance, and discloses a glass fiber reinforced plastic coated under-pressure leaking stoppage device and a construction method.The glass fiber reinforced plastic coated under-pressure leaking stoppage device and the construction method are integrally used for conducting under-pressure leaking stoppage on a pipeline body and comprise a leaking guiding assembly and a bonding fixing assembly, and the leaking guiding assembly comprises a leaking guiding short pipe; a leakage guiding valve is arranged on the leakage guiding short pipe, and the bonding and fixing assembly is used for bonding and fixing the leakage guiding short pipe and the pipeline body. In order to avoid the risk of fire explosion in the process of leaking stoppage of the chemical pipeline under pressure and improve the connection stability of the leakage guiding assembly and the pipeline body, the leakage guiding assembly is fixed without fire by adopting an epoxy modified polyurethane adhesive; and meanwhile, circumferential tooth-shaped protrusions are arranged at the arc-shaped attaching ends of the leakage guiding short pipes to increase the bonding contact area, the temporary positioning mode of the leakage guiding short pipes is achieved in cooperation with a temporary fixing mechanism, and therefore no welding spark exists in the whole leakage stopping process, and the hidden danger of burning explosion of flammable and explosive media is eliminated.

The utility model relates to the technical field of spraying supports, and particularly discloses a metal product spraying support which comprises a supporting suspension pipe and further comprises an externally-hung spraying assembly, the externally-hung spraying assembly comprises at least two externally-hung short pipes, and material passing channels are arranged in the externally-hung short pipes. A nozzle communicating with the material passing channel is embedded in the front face of the outer hanging short pipe and used for paint spraying. A baffle is connected to the top of the front face of the outer hanging short pipe, two positioning side plates are symmetrically installed on the left side and the right side of the outer hanging short pipe in an upward mode, and protruding strips are fixed to the opposite side faces of the two positioning side plates. According to the utility model, the spraying frame is divided into two parts, namely a fixed part and a movable part, so that the spraying range of the spraying frame can be flexibly controlled, and a baffle capable of preventing paint from spilling is additionally arranged on the newly-added externally-hung short pipe, so that the phenomenon that the nozzle close to the lower part is blocked is avoided.

The invention relates to the technical field of metal pipe machining, in particular to a positioning device for a pipe cutting machine, which is provided with a rotating mechanism and enables a rotating motor to drive a metal pipe to rotate in a friction wheel connection transmission mode. The friction wheel is controlled to ascend and descend through the transmission air cylinder, the cut short pipe can be conveniently taken out when the friction wheel ascends, the friction wheel can play a role in friction transmission when the friction wheel descends, meanwhile, the metal pipe can be tightly pressed, and stability is improved. After cutting is finished, the driving positioning piece and the metal pipe are pushed to move through the driving air cylinder, and the metal pipe can be accurately inserted into the connecting box through the guiding piece. Then the friction wheel descends to press and fix the metal pipe, then the driving positioning piece loosens the metal pipe, the driving air cylinder drives the driving positioning piece to return, the position is adjusted again, then positioning is conducted again, the whole process is automatic, operation is easy and convenient, efficiency is high, and meanwhile it can be guaranteed that the position is accurate.

The application provides a flange short pipe accurate welding device based on detection correction and an operating method, which is used for correcting and welding a flange and a short pipe and comprises a workbench, a flange fastening device, a lifting device, a polishing mechanism, an operating arm and a detection aligner. The workbench is arranged on a horizontal plane, and the workbench is provided with a finished product placing area and a processing area; the finished product placing area is used for placing finished products after processing; the flange fastening device is arranged in the processing area of the workbench; the lifting device is arranged above the flange fastening device; the polishing mechanism comprises a polishing disc and a polishing motor; the polishing disc is connected with the output shaft of the polishing motor; the polishing disc is lifted and rotated by the lifting device and the polishing motor respectively; the operating arm comprises a clamping mechanical arm and a welding mechanical arm, which are respectively used for clamping the short pipe and welding the short pipe and the flange; and the detection aligner is arranged around the flange fastening device and is in communication connection with a control system, so that integrated operation is realized.

This utility model relates to the field of dust collector fan technology, and provides an online cleaning system for dust accumulation on the blades of a dust collector fan. The system includes a flushing system and a drainage system. The flushing system includes a connecting sleeve welded to the bottom opening of the fan inlet pipe. A second double-threaded short pipe is welded to the upper end of the connecting sleeve. An elbow is fixedly connected to the upper end of the second double-threaded short pipe. A first double-threaded short pipe is welded to the elbow towards the fan impeller. A linear nozzle is fixedly installed at one end of the first double-threaded short pipe via another connecting sleeve. A third double-threaded short pipe is fixedly installed below the connecting sleeve. A ball valve is fixedly installed at the lower end of the third double-threaded short pipe. The fan impeller is cleaned through the first double-threaded short pipe, the second double-threaded short pipe, and the linear nozzle connected to the second double-threaded short pipe. Simultaneously, the drainage system discharges wastewater.

The utility model belongs to the technical field of iron and steel smelting, and relates to a blast furnace tuyere small sleeve on-line unblocking system which comprises a tuyere small sleeve, a cooling water inlet short pipe and a cooling water outlet short pipe are arranged on the tuyere small sleeve, a water inlet hose is connected to the cooling water inlet short pipe, a three-way pipeline is connected to the cooling water outlet short pipe through a water outlet hose, and the three-way pipeline is connected to the tuyere small sleeve. One branch of the three-way pipeline is connected to the water return tank through a water return hose connected with a manual ball valve, a first high-pressure water outlet short pipe is arranged on the high-pressure water bag, and a first water pumping valve is installed on the first high-pressure water outlet short pipe; and the other branch of the three-way pipeline is connected to a first water pumping valve of the high-pressure water bag through a high-pressure water hose. The blast furnace tuyere small sleeve online unblocking system is scientific and reasonable in structural design, has the advantages of prolonging the service life of the small sleeve, ensuring the production schedule, reducing shutdown loss, being high in unblocking efficiency and easy to implement, and has relatively high innovativeness.

The invention relates to the technical field of flange positioning, in particular to short pipe flange welding positioning equipment which comprises a supporting device, the top end of the supporting device is slidably sleeved with two displacement components, the opposite ends of the displacement components are slidably sleeved with flanges, and each displacement component comprises a positioning device, a synchronizing device and a guiding device. The positioning devices are symmetrically inserted into the top end of the guiding device in a sliding mode, the synchronizing device is fixedly installed at the side end, away from the positioning devices, of the guiding device, and the synchronizing device comprises a transverse rod, a limiting vertical key, a displacement vertical rod, a gasket, a second spring, a supporting top frame and a contact transverse plate; the gaskets are fixedly installed on the outer rings of the displacement vertical rods, the second springs are fixedly installed between the gaskets and the supporting top frame, and the transverse rod is fixedly installed between the two displacement vertical rods. Through the arrangement of the displacement component and the supporting device, the functions of synchronous regulation and control and guide butt joint synchronization during butt welding of the flange and the short pipe are achieved.

This invention discloses a welding processing device for exhaust copper pipes, relating to the field of welding technology. The device includes: a processing table; a support frame fixedly installed on the top of the processing table; a connecting frame fixedly installed on the surface of the support frame; an electric telescopic rod fixedly installed on the top of the processing table; a rotating shaft fixedly installed at the output end of the electric telescopic rod, which drives the rotating shaft to extend and retract; a copper pipe clamping device fixedly installed at the output end of the rotating shaft, used to clamp the copper pipe; and a drive motor fixedly installed on the top of the processing table to prevent the end of the copper pipe furthest from the copper pipe clamping device from tilting downwards, which could lead to inaccurate alignment between the copper pipe and the short pipe, causing deviations during subsequent welding and affecting the welding effect.

The invention provides a short pipe flange welding device, and relates to the technical field of welding devices. The short pipe flange welding device comprises a welding gun, a rotating plate, ejector rods, an ejector plate, an anti-skid gasket, an adjusting mechanism and a driving mechanism, the ejector rods are arranged on the side face of the rotating plate, the adjusting mechanism is used for driving the ejector rods to synchronously move in the same direction or away from one another, and the ejector plate is arranged in the ejector rods. The driving mechanism is used for driving the top plate to slide outwards or inwards relatively in the ejector rod, the anti-skid gasket is arranged on the side face of the top plate, the welding gun is arranged at the lower end of the ejector rod, and the rotating plate can rotate. The overall outer diameter of the multiple ejector rods is driven to be increased through the adjusting mechanism, so that coaxial butt joint and supporting of short pipe flanges are facilitated, and the butt joint efficiency and the butt joint precision are improved; the ejection plates and the anti-skid gaskets slide outwards through the driving mechanism to extrude the inner wall of the short pipe flange, the contact friction between the ejection rods and the short pipe and the inner wall of the flange is improved through deformation of the anti-skid gaskets, the relative positions of the ejection rods and the short pipe flange are fixed, and the welding precision is guaranteed.

The invention discloses a petroleum pipeline welding method and device, and relates to the technical field of petroleum pipeline machining.The petroleum pipeline welding method comprises the steps that a plurality of short pipes are fixed, and the ends of every two adjacent short pipes are in butt joint; one side of the butt joint of every two adjacent short pipes is sleeved with a sleeve; the butt joint positions of the short pipes are welded in sequence; after the butt joint of every two adjacent short pipes is welded, the butt joint is covered with the sleeve; the two ends of the sleeve are welded to the corresponding short pipes correspondingly; after welding between the two ends of the sleeve and the corresponding short pipes is completed, welding of the petroleum pipeline is completed; the sleeve sleeves the weld joint between the adjacent short pipes, the two ends of the sleeve are welded to the two short pipes, the butt joint of the adjacent short pipes is protected through the sleeve, the probability of weld joint breakage is reduced, and the strength of the butt joint of the adjacent short pipes is improved.

The invention provides a steel pipe configuration method and equipment for a fastener type steel pipe framed bent, and the method comprises the steps: introducing a dynamic planning global optimization model based on multi-candidate configuration based on a greedy algorithm of long pipe priority and long and short pipe matching; the problem that the lease cost is high due to the fact that traditional manual configuration is large in short pipe specification, redundant in number and low in material utilization rate is effectively solved. The method provided by the invention can be close to the optimal configuration scheme under the dual targets of longest main steel pipes and minimum usage amount of short pipes, so that the comprehensive utilization rate of materials is remarkably improved, and diversified choices taking economical efficiency and construction convenience into consideration are provided for construction decision makers; and the resource allocation of the framed bent steel pipe is changed from experience-dependent allocation to scientific allocation. Scientific configuration of the steel pipes can be achieved, and the optimal combination is given, so that the purposes of improving the material utilization rate and saving the lease cost are achieved; the problems that in the prior art, short pipes are too many in specification, redundant in number and low in utilization rate are solved.