134 results about "Skelp" patented technology

The invention provides a flange short pipe accurate welding device based on detection correction and an operation method, the flange short pipe accurate welding device is used for correcting and welding a flange plate and a short pipe, and the flange short pipe accurate welding device comprises a workbench, a flange plate fastening device, a lifting device, a grinding mechanism, an operation arm and a detection aligner. The workbench is arranged on the horizontal plane and provided with a finished product containing area and a machining area. The finished product placing area is used for placing processed finished products; the flange plate fastening device is arranged in the machining area of the workbench. The lifting device is arranged above the flange plate fastening device; the grinding mechanism comprises a grinding disc and a grinding motor; the grinding disc is connected with an output shaft of the grinding motor; the grinding disc is lifted and rotated through a lifting device and a grinding motor respectively; the operation arm comprises a clamping mechanical arm and a welding mechanical arm which are used for clamping a short pipe and welding the short pipe and a flange plate correspondingly. And the detection aligner is arranged around the flange plate fastening device and is in communication connection with the control system.

The invention provides a non-stop production under-pressure tapping construction method for an oil pipeline, and belongs to the technical field of oil pipeline construction. The method comprises the steps that a tapping operation point is selected, and the wall thickness is measured; preparing an under-pressure welding short pipe and a valve; welding a short pipe on the oil pipeline under pressure, and determining optimal welding current, voltage and welding speed by adopting a welding parameter game model; installing a valve and carrying out a strength test; assembling the tapping machine and connecting the tapping machine with the valve; carrying out overall air tightness inspection; pressure tapping operation is executed, and the tapping speed and the feeding amount are adjusted in real time through the tapping operation parameter optimization model; returning the cutter and closing the valve after tapping; and dismantling the tapping machine to finish the operation. According to the scheme, the problems existing in the prior art are effectively solved, the reliability and safety of under-pressure trepanning construction are greatly improved, meanwhile, the operation efficiency is remarkably improved, and the problems that in an existing under-pressure trepanning technology, the welding quality is still difficult to control, and the trepanning process is uncontrollable are solved.

The invention provides pipe manufacturing flying saw equipment for forming ultrathin steel pipes and a flying saw method.The pipe manufacturing flying saw equipment comprises a conveying clamp, a feeding mechanism, a material pulling clamp, a material pulling mechanism, a cutting mechanism and a cutting clamp, and the conveying clamp is used for clamping a plurality of steel pipes at the same time; the feeding mechanism is used for driving the conveying clamp to move forwards; the material pulling clamp is used for bearing the multiple steel pipes conveyed by the feeding mechanism and clamping the multiple steel pipes at the same time. The material pulling mechanism is used for driving the material pulling clamp to move forwards; the cutting mechanism is arranged between the feeding mechanism and the pulling mechanism and used for cutting the steel pipe. The cutting clamp is arranged at the cutting mechanism and is also used for clamping a plurality of steel pipes at the same time; a plurality of steel pipes can be cut off at the same time, the cutting efficiency is high, meanwhile, after the steel pipes are cut off, the steel pipes cannot be scattered on the ground, the cut short pipes can be conveniently bound, and therefore the overall working efficiency cannot be affected.

The utility model discloses a plate-made disc welding eccentric reducing joint, and relates to the technical field of pipeline fittings. The disc is connected with the first short pipe; the first short pipe is connected with the disc, the second short pipe is connected with the disc, the reinforcing flange plate is connected between the disc and the second short pipe, the inner diameter of the first short pipe is larger than that of the second short pipe, and the eccentric distance between the first short pipe and the second short pipe is H; a first inner hole is formed in the first short pipe, a second inner hole is formed in the second short pipe, a third inner hole is formed in the disc, the third inner hole is connected between the first inner hole and the second inner hole in a penetrating mode, and the inner diameter of the second inner hole is the same as that of the third inner hole. The eccentric distance of the third inner hole on the disc is H. The corrosion-resistant and wear-resistant layers are arranged in the second inner hole and the third inner hole. The conveying device is easy to machine, low in cost, firm in connection and stable in conveying.

The invention relates to the technical field of steel pipe machining equipment, in particular to a short pipe machining production line which comprises a cutting device, a first conveyor is arranged on one side of the cutting device, a temporary storage device is arranged on one side of the first conveyor, and a material moving mechanism is arranged on the other side of the first conveyor. An intermittent conveying device is arranged on the side, away from the first conveyor, of the temporary storage device, a chamfering device and a preliminary cleaning device are sequentially arranged on the two sides of the intermittent conveying device in the conveying direction, a second conveyor is arranged on the side, away from the temporary storage device, of the intermittent conveying device, a mounting frame is arranged on one side of the second conveyor, and a feeding assembly is arranged on the mounting frame. A transfer assembly is arranged on the other side of the second conveyor, a secondary cleaning device and a length measuring device are sequentially arranged on the mounting frame in the feeding direction, and a material collecting device is arranged at one end of the mounting frame. The transfer efficiency of the short pipes among different machining procedures is improved, and therefore the production and machining efficiency of the short pipes is improved.

The utility model belongs to the technical field of fender posts, and particularly relates to a device for constructing a pipe shed on fender posts. Comprising fender posts, pipe sheds, arc-shaped steel plates, inter-pile steel plates, stiffening plates, connecting sleeves, open cut well side wall inner pipe shed short pipes and water stop steel rings. Pipe shed driving holes are reserved in the arc-shaped steel plates according to pipe shed positioning, the inter-pile steel plates are positioned according to the fender posts and welded to the arc-shaped steel plates, the stiffening plates are arranged between the inter-pile steel plates, after a whole is formed, reinforcing steel bars of the fender posts are chiseled out, and the arc-shaped steel plates and the reinforcing steel bars of the fender posts are welded and connected firmly. And after the foundation pit is excavated to the pipe shed construction operation elevation, the pipe shed penetrates through the reserved pipe shed hole of the arc-shaped steel plate to be arranged. According to the device and the construction method, the pipe shed can be built when the open excavation working well enclosure foundation pit is excavated, it is avoided that a construction operation platform is built again when the pipe shed is constructed in the later period, the construction period is shortened, the construction cost is reduced, meanwhile, the end of the pipe shed is poured into the side wall of the open excavation air shaft, the fulcrum of the end is firm, and the safety of subsequent underground excavation construction is guaranteed.

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 technical field of short pipe welding, in particular to a welding mechanism for short pipe inner hole welding, which is characterized by comprising a mounting plate, a servo motor, a telescopic pipeline assembly, a short pipe fixing structure, two guide rods, a welding head and a micro camera, the two guide rods are fixed on the end face of one side of the mounting plate and are arranged in parallel, and the welding head is fixed on the end face of the other side of the mounting plate. The number of the short pipe fixing structures is two, the two short pipe fixing structures are sequentially connected to the two guide rods through the position adjusting mechanism, the servo motor is installed on the end face of the other side of the installation plate, and an output shaft of the servo motor penetrates through the installation plate to be connected with one end of the telescopic pipeline assembly. The telescopic pipeline assembly and the guide rod are arranged in parallel, the welding head is fixed to the other end of the telescopic pipeline assembly, and the micro camera is connected to the end, away from the mounting plate, of the telescopic pipeline assembly through the mounting frame. The design has the advantages of being simple in structure, easy to manufacture, practical and efficient.

The invention discloses a welding-free modularized combined type bearing support suitable for a groove connection type vertical pipeline, which comprises a bearing short pipe, opposite clamping plates and a bearing base are arranged outside the bearing short pipe, a tongue-and-groove mortise is arranged in the middle of the bearing short pipe, the opposite clamping plates are in a two-piece spliced type, and the bearing base is arranged on the opposite clamping plates. Tongue-and-groove mortises are formed in the inner sides of the opposite clamping plates, tongue-and-groove mortises are formed in the inner sides of the opposite clamping plates, the tongue-and-groove mortises are inserted into the tongue-and-groove mortises, opposite clamping plate flange plates and opposite clamping plate steel rib plates are arranged outside the opposite clamping plates, and horizontal limiting parts and vertical limiting parts are arranged at the positions, corresponding to the opposite clamping plate flange plates and the opposite clamping plate steel rib plates, of the bearing base correspondingly. Compared with a conventional bearing support, the bearing support has the advantages of being free of welding, free of damage to an anti-corrosion zinc coating, reasonable in stress, safe, reliable, rapid to install and the like.

The utility model discloses a hardware fitting cleaning structure which comprises a box body, a box door is rotationally arranged on the front face of the box body, a U-shaped steel pipe is fixedly arranged in the box door in a penetrating mode, the two ends of the U-shaped steel pipe are closed, a water inlet mechanism is fixedly connected to the outer side of the U-shaped steel pipe, and a plurality of short pipes are fixedly arranged on the opposite sides of the upper end and the lower end of the U-shaped steel pipe in a penetrating mode. Short pipes are arranged in the box body, nozzles are fixedly connected to the bottoms of the short pipes, first electric cylinders are arranged on the two sides of the top in the box body in a sliding mode respectively, the positions of the first electric cylinders can be adjusted, and transverse plates are fixedly arranged at the bottoms of the first electric cylinders. The problems that when hardware fittings with large sizes are cleaned by hand, time and labor are wasted, meanwhile, many hardware chippings are often flushed out in the cleaning process, and many cleaning devices do not recycle the chippings, and large hardware resource loss is caused are solved.

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 utility model relates to a welding fixture for a short pipe. The welding fixture comprises a base component, a fixture component and a reducing component, the device has the advantages that the variable-diameter part is arranged in the penetrating hole of the clamp part, the hole diameter of the penetrating hole can be adjusted, and therefore the device can be suitable for pipe fittings with different pipe diameters, and the applicability of the whole device is improved.

The invention relates to a suspension device of a stand pipe and a mounting method thereof, the suspension device comprises a stand pipe butt joint assembly and a pile leg fixing assembly, the stand pipe butt joint assembly comprises a short pipe, a plurality of fins are arranged on the outer wall of the short pipe, and the plurality of fins are annularly fixed on the outer wall of the short pipe to form a fin ring; the pile leg fixing assembly comprises a fin ring sleeve, and a welding fixing plate is arranged on the back face of the fin ring sleeve. The inner wall of the fin ring sleeve is arranged on a fin ring of the vertical pipe butt joint assembly in a sleeving mode. Wherein the welding fixing plate is an arc-shaped plate and is used for being welded on the outer wall of a pile leg of the ocean platform; the upper end opening and the lower end opening of the short pipe are used for being in butt joint with the upper vertical pipe and the lower vertical pipe correspondingly, so that the upper vertical pipe and the lower vertical pipe are connected into a whole pipe which is through from top to bottom through the short pipe, and the whole pipe is hung on a pile leg. According to the efficient installation method of the vertical pipe, efficient installation of the vertical pipe suspension is achieved, the installation difficulty is remarkably reduced, and the problem that the difficulty is high when the vertical pipe is installed through a suspension flange at present is solved.

The invention discloses an oil field gathering and transportation pipeline unblocking method. The method comprises the following steps: welding the lower end of a pored short pipe at a blocked part of a gathering pipeline; the upper part of the perforated short pipe is connected with a perforated flange; the portable tapping machine is connected with the tapping flange; the portable tapping machine is started, and a hole is formed in the gathering and transportation pipeline plug; the portable tapping machine is dismantled, and the emptying flange is connected with the tapping flange; connecting one end of a liquid discharging rubber pipe to the emptying flange, and connecting the other end of the liquid discharging rubber pipe to the oil tank truck; adding water from one end of the blocked pipeline by using a pump truck, and pressurizing to flush the blocked pipeline; parts except for the trepanned short pipe are detached, and the welded pipe cap is connected with the trepanned short pipe. The special portable tapping machine has the beneficial effects that the blocked gathering and transportation pipeline can be rapidly and safely opened through the special portable tapping machine; the emptying flange and the oil tank truck are connected through the rubber pipe to form a closed space, pollution of landing oil to the environment can be effectively avoided, and environmental protection and sanitation are achieved; and the dredged gathering and transportation pipeline is quickly blocked through the welding pipe cap, so that the welding time can be shortened.

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 invention relates to the technical field of rotary furnaces, in particular to a rotary furnace sealing cover which comprises a feeder, a spiral feeding bin arranged at the output end of the feeder and a movable sealing assembly arranged on the periphery of the spiral feeding bin. A sealing cover is arranged between the spiral feeding bin and the feeder, a middle partition plate is arranged in the sealing cover, a short pipe is arranged between the spiral feeding bin and the sealing cover, and the short pipe is used for communicating the spiral feeding bin with the sealing cover; the sealing cover is divided into two parts through the middle partition plate, and a gap exists between the middle partition plate and the outer pipe wall of the short pipe. A U-shaped ring assembly and a connecting pipe assembly communicated with the U-shaped ring assembly are arranged on the side edge of the movable sealing assembly. An ash outlet is formed in the bottom end of the connecting pipe assembly, and the U-shaped ring assembly is communicated with the sealing cover. In the material diffusion path, the materials are continuously blocked and decelerated, so that the materials cannot enter the dynamic seal, and the blocking phenomenon of the dynamic seal is avoided.

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 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 fettling gun for an electric arc furnace, which comprises a long pipe, a short pipe and a thin pipe, the outer wall of one side of the long pipe is provided with an inclined through hole for installing the short pipe, the outer wall of the other side of the long pipe is provided with a vertical through hole for installing the thin pipe, and the inclined direction of the short pipe faces the end part of the long pipe on the short pipe side; a port of the long pipe close to the thin pipe side is a feed port, a port of the thin pipe is a water inlet, and a port of the short pipe and a port of the long pipe close to the short pipe side are gunning material outlets. Powder such as magnesia and an adhesive is pushed into the gun barrel by using compressed air and is uniformly mixed with water on the way to form a gunning material, and then the gunning material is sprayed onto a furnace wall and a furnace lining through the gun head and is rapidly sintered at the furnace temperature to repair a damaged part; the fettling gun is easy to use and operate, convenient to maintain, good in gunning effect, high in fettling efficiency and capable of effectively prolonging the service life of the furnace wall of the electric arc furnace and meeting the continuous steelmaking requirement of the electric arc furnace.

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 utility model discloses a wall-attached water leakage device and a ship deck or cabin drainage system. The wall-attached water leakage device comprises a device outer wall, a filter plate and a short pipe. The whole water leakage device is of a hollow hexahedron structure with one opened side face, and the opened side face of the water leakage device is connected with a ship body structure. The outer wall of the device comprises the remaining three side faces and the bottom face of the hexahedron of the water leakage device. And the filter plate is arranged on the top surface of the hexahedron structure defined by the outer wall of the device. Any side face of the water leakage device is provided with a hole communicated with the short pipe. The wall-attached water leakage device provided by the utility model is simple in structure and low in manufacturing and mounting cost. The water leakage device can effectively solve the problem of a narrow cabin or a ship bow and stern area with large ship linetype change, realizes gapless installation of the water leakage device and a ship body structure, solves the problem of local water accumulation caused by the fact that an assembling and welding interval is reserved in the conventional water leakage port installation, and greatly improves the field assembling and welding efficiency at the same time.

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 present invention provides a flying saw device and flying saw method for forming ultra-thin steel pipes, comprising a conveying clamp, a feeding mechanism, a pulling clamp, a pulling mechanism, a cutting mechanism and a cutting clamp, wherein the conveying clamp is used for clamping a plurality of steel pipes at the same time; the feeding mechanism is used for driving the conveying clamp to move forward; the pulling clamp is used for receiving a plurality of steel pipes conveyed by the feeding mechanism and clamping the plurality of steel pipes at the same time; the pulling mechanism is used for driving the pulling clamp to move forward; the cutting mechanism is arranged between the feeding mechanism and the pulling mechanism, and the cutting mechanism is used for cutting the steel pipe; the cutting clamp is arranged at the cutting mechanism, and the cutting clamp is also used for clamping a plurality of steel pipes at the same time; the present invention can cut a plurality of steel pipes at the same time, and the cutting efficiency is high. After the steel pipes are cut, the steel pipes will not be scattered all over the ground, so it is convenient to bundle the short pipes after cutting, thereby not affecting the overall work efficiency.