30 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 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 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 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 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 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.

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 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.

The invention discloses a novel circulating gas thermolator and a manufacturing method thereof, and belongs to the technical field of chemical equipment. The equipment is structurally innovated aiming at the problems that the welding part of the outlet of the lower tube box and the lower sealing head of the traditional circulating gas thermolator is undetectable and easy to crack. The main improvement is as follows: an internally-closed elliptical manhole is formed in the center of a lower sealing head of the cylinder body; an original single central large outlet is changed into a plurality of evenly-distributed outlet short pipes, and the outlet short pipes are in sliding and flexible connection with a stuffing box connecting assembly fixed to a lower sealing head through expansion joints. By means of the structure, double-face welding and RT detection of all key weld joints can be achieved, and the manufacturing quality is greatly guaranteed; meanwhile, the stress state of the structure is remarkably improved through multi-path load distribution and flexible connection design, stress concentration and fatigue risks are reduced, and therefore long-period safe and stable operation of equipment under the high-temperature and high-pressure load working conditions is achieved.

The invention discloses a multifunctional butt welding jig frame for welding a large-diameter long-distance conveying pipeline, which belongs to the technical field of building construction and comprises a jig frame supporting system, a butt system and a temporary closing system for construction in winter and rainy seasons. The alignment system is mainly composed of a fine adjustment alignment assembly and a coarse adjustment positioning assembly. The temporary sealing system for construction in winter and rainy seasons is mainly composed of an upper cross rod, a top cross connecting rod, a slope connecting rod, a riveting short pipe and a sealing shed. The large-diameter long-distance pipeline welding alignment device has the large-diameter long-distance pipeline welding alignment function, and a local working environment capable of being temporarily closed can be provided for construction in winter and rainy seasons according to the weather condition of a construction site. According to the invention, a lot of large working pits do not need to be excavated, the pipe base treatment is convenient, the workload is small, a reasonable space can be provided for the application of the track adsorption type welding robot, a technical support is provided for the application of the welding robot, and the engineering quality and the working efficiency can be effectively improved.

The application discloses a quick-mounting type pipeline flange hoop connecting device, which is characterized by comprising a flange short pipe, two pipe flanges fixed on the two sides of the flange short pipe, multiple pairs of fixing bases uniformly fixed on the side surface of the flange short pipe in a ring shape, multiple flange fastening devices connected with the fixing bases and corresponding to the multiple pairs of fixing bases and used for fixing the flanges, multiple positioning rods fixed in a wave shape on the inner wall of the pipe flange, a gasket groove formed on the side surface of the pipe flange and a rubber gasket arranged in the gasket groove. The quick-mounting type pipeline flange hoop connecting device and the control method thereof are suitable for prefabricated processing of pipeline engineering and convenient assembly. Because of the convenience of assembly, the construction efficiency is greatly improved, the number of workers on site is reduced, the engineering construction progress is accelerated, and the engineering construction quality is improved.

The utility model discloses a nickel processing bell-type furnace based on an electric heating technology, which belongs to the technical field of metal processing and comprises a bell-type furnace body, a cover body is fixedly mounted at the top of the bell-type furnace body, a heating device is arranged at the bottom of the cover body, a cooling component is arranged in the bell-type furnace body, and the cooling component is arranged in the bell-type furnace body. The cooling assembly comprises a water tank, two groups of short pipes are fixedly mounted at the top of the water tank, and connecting pipes are arranged at the tops of the two groups of short pipes, so that the rotating door can be conveniently and quickly opened and closed, the rotating door can be tightly closed, heat loss in the furnace can be prevented, and the stability of the temperature in the furnace can be kept; and the door is ensured not to be opened accidentally in the machining process, the distribution of internal stress of the nickel material can be better controlled, and the risks of defects such as deformation and cracking of the material are reduced, so that the quality and the yield of the nickel material are improved, and the environment in the furnace can be more quickly recovered to the state that the next batch of machining can be carried out.

This utility model relates to the field of insertion flow meter installation technology, specifically disclosing an insertion flow meter installation device that facilitates multi-directional adjustment. It includes a pipe and an insertion flow meter body. An installation pipe connected to the outer wall of the pipe is welded to it. The upper end of the inner wall of the installation pipe is a straight structure, and the lower end is an arc-shaped structure. A movable ball matching the arc-shaped structure is installed inside the installation pipe. A through hole is provided through the outer wall of the movable ball. The fixing mechanism releases the movable ball from its fixed state, and then a short pipe drives the movable ball to rotate within the installation pipe, thereby adjusting the movable ball and the short pipe. Through the interaction between the movable ball and the arc-shaped structure at the lower end of the inner wall of the installation pipe, multiple directions of adjustment of the movable ball and the short pipe are possible, thereby adjusting multiple directions of the insertion flow meter body. This eliminates the need to re-weld the short pipe or flange, shortening construction time and facilitating use.

The utility model relates to a double partition device for an oil ship, which is arranged between a left communicating pipeline and a right communicating pipeline and comprises a connecting short pipe and two blind through flanges, each blind through flange comprises a blind flange end and a through hole flange end which are arranged up and down, and a through hole is formed in the center of each through hole flange end. The connecting short pipe is welded between the through holes of the two through hole flange ends, the blind plate flange end and the through hole flange end are provided with an upper bolt hole and a lower bolt hole corresponding to the connecting flange of the communicating pipeline respectively, and the upper bolt hole and the lower bolt hole in the same horizontal radial front and back side are communicated through the vertical bolt sliding groove. According to the utility model, the partition operation time of a dangerous area and a safe area is effectively shortened, the storage management problem of the traditional detachable short pipes is solved, the mixed use and loss risks of the short pipes in the collecting pipe area are avoided, and efficient, stable and reliable isolation protection of the double partition system of the oil ship is realized.

The present application relates to a kind of tee pipe welding machines, comprising: feeding mechanism;Feeding mechanism, feeding mechanism includes feeding cylinder, the positioning mould that is connected with the output end of feeding cylinder and is set under the jacking cylinder of positioning mould, positioning mould is equipped with the tee pipe slot that is adapted to tee pipe;Clamping mechanism, clamping mechanism includes the clamping device for clamping tee pipe and the rotary power mechanism for driving clamping device rotation;Pressing assembly, pressing assembly is opposite to set clamping mechanism opposite, for assisting the short pipe of tee pipe to be pressed on the long pipe of tee pipe;Welding mechanism, welding mechanism is set between clamping mechanism and pressing assembly for the short pipe and long pipe of tee pipe is welded as a whole.The present application is specially used for the welding of tee pipe, can be automatically fed and automatically welded to the straight pipe and short pipe of tee pipe, whole process does not need artificial, welding efficiency and welding quality are relatively higher than artificial, reduce production cost, improve enterprise benefit.

The application provides a kind of municipal pipeline trenchless expansion construction method, which comprises the following steps: S1, excavating a first working well and a second working well on an old short pipe; S2, installing a push-pull device in the first working well and connecting it to a guide rod; S3, cutting the entire old short pipe into multiple sections of old short pipe; S4, removing the cutting device and installing a pushing device on the guide rod; S5, installing a hollow jacking machine on one side of the inner wall of the second working well and a hydraulic jack on the other side of the inner wall; S6, hoisting a first section of steel new pipe into the second working well; S7, pushing the first section of old short pipe out of the hollow jacking machine into the second working well and hoisting it out; the first section of steel new pipe is jacked into the cavity where the hoisted-out first section of old short pipe is located through the hollow jacking machine; S8, hoisting a second section of steel new pipe and repeating the operations in steps S6 to S7 until all old short pipes are replaced by steel new pipes. The method is simple to operate and has good use effect, saving time and effort.

The utility model relates to the technical field of sprinkling machine manufacturing equipment, in particular to a short pipe welding device for a sprinkling machine, which comprises a rack, a positioning seat and a sliding seat which are used for fixing a pipeline are arranged on the rack, and the distance between the positioning seat and the sliding seat is adjustable. A first positioning disc and a second positioning disc which are used for clamping a pipeline are installed on the opposite sides of the positioning seat and the sliding seat correspondingly, when a long pipeline is welded, the first positioning disc and the second positioning disc are used for fixing the pipeline, the first positioning disc is rotationally connected with the positioning seat, and the second positioning disc is rotationally connected with the sliding seat. A driving device used for driving the first positioning disc to rotate is arranged in the positioning seat, when the length of the pipeline is small, the first positioning disc and the second positioning disc do not need to be used for fixing the pipeline, the driving device is directly used for driving the first positioning disc to overturn upwards, and welding operation can be conducted by placing the pipeline on the first positioning disc. And the mode of fixing the pipeline is simplified, and the operation efficiency is improved.