84 results about "Head (vessel)" patented technology

The utility model belongs to the technical field of hydrofoils, and particularly relates to a ship with a telescopic elevator structure, which comprises a ship body, a bow, a stern, a buoyancy structure, a first arc-shaped strut and a second arc-shaped strut. The buoyant structure includes a first buoyant volume disposed near the bow and a second buoyant volume located between the first buoyant volume and the stern. The present application provides a vessel with a retractable elevator structure, a first buoyancy volume pivotably coupled to a second buoyancy volume along a radial axis to achieve precise directional control, first and second arcuate struts having proximal ends movably connected to the buoyancy structure and distal ends supporting a hydrofoil lift surface, the first arcuate strut and the second arcuate strut expand and contract in an arcuate manner along an external common radial axis, allowing seamless transition between a compact storage configuration and an expanded operating state, improving ship maneuverability, portability and safety.

The present application provides a kind of inside flanging forming device of jacket through hole, belong to pressure vessel processing technical field.It solves the problem of existing technology when processing jacket through hole inside flanging, processing is troublesome, the problem of insufficient forming quality.The inside flanging forming device of jacket through hole, including cylinder body, forming die head and vertically arranged pull rod, forming die head is conical frustum and has the guide hole one along its axis through, the large end of forming die head is downward and fixedly connected in the upper end of cylinder body, the lower end of pull rod is slidably connected in cylinder body and pull rod can be relatively cylinder body axial telescopic under the action of hydraulic drive, pull rod is up and out of forming die head through the guide hole one, the upper end of pull rod can be detachably sleeved with the push seat that can be synchronous with pull rod and move down, the bottom of this push seat has the push part of circular tube shape and is concentrically arranged with forming die head.The present application makes jacket through hole can be smoothly and smoothly completed flanging forming, effectively guarantees the forming precision and forming quality of inside flanging.

The utility model discloses a kind of rotary pressure vessel welding devices, belong to pressure vessel welding technical field.A kind of rotary pressure vessel welding device, including hoist frame, the lower end of truss frame is provided with laser welding machine, welding tool is installed below laser welding machine, the upper end of welding tool is installed with two adjusting frame, the rear end of laser welding machine is installed with electric cylinder.The utility model solves the problem that the existing pressure vessel welding device is affected by the size of pressure vessel, poor adaptability, affects the welding effect, the utility model is fixed laser welding machine in hoist frame lower end, carries out welding work to pressure vessel to be processed with laser welding machine, adapts to different working environment, by installing electric cylinder between truss frame and laser welding machine, electric cylinder telescopic, the angle of laser welding machine lower end welding head welding is adjusted work, simple structure, convenient operation, collocation welding tool realizes quick adjustment and adaptive work.

The utility model relates to the field of sealing performance detection equipment, in particular to pressure vessel sealing head sealing performance detection equipment, which comprises a detection box, a sealing plate, an air cylinder, a pressing plate, a control module, an air pump and a water pump, according to the utility model, the three groups of cylinders are connected with the pressure sensors to respectively detect the three groups of end sockets, so that the detection period is effectively shortened, the requirements of mass production are met, the equipment can process more end sockets within a fixed time, the idle time of the equipment is reduced, and the overall detection efficiency is improved; the three groups of detection modes can provide multiple detection modes for a user to select, detection parameters are flexibly set according to specific requirements of the seal heads, the detection modes of different seal heads are met, meanwhile, the three groups of air cylinders independently operate and do not interfere with one another, when a single air cylinder goes wrong, detection of other stations cannot be affected, the downtime is shortened, and the working efficiency is improved. And stable operation of equipment is ensured.

The utility model discloses a veneer reeling machine for pressure vessel production, which comprises a veneer reeling machine main body, the veneer reeling machine main body comprises a working table, an adjusting device and a compression roller are arranged on the working table, a supporting seat is hinged on the working table, a supporting screw rod and a supporting block are arranged on the supporting seat, a supporting groove is arranged on the supporting block, a sliding rail and a sliding plate are arranged on one side of the working table, and the sliding plate is arranged on the other side of the working table. A correcting frame is arranged on the sliding plate, a correcting plate is rotationally arranged on the correcting frame, a first correcting rod and a second correcting rod are arranged at one end of the correcting plate, a hydraulic cylinder is arranged at the other end of the correcting plate, a supporting block and a supporting groove are arranged on the supporting seat, the pressing roller is conveniently supported, and the height of the pressing roller can be adjusted through a supporting screw and the supporting block in cooperation with an adjusting device; the pressing roller is conveniently supported, the stability of the pressing roller is improved, by means of the lever principle, the hydraulic cylinder drives the correcting plate to rotate around the correcting frame, and the correcting plate drives the first correcting rod and the second correcting rod to correct the two sides of the winding drum.

A dual-cable-tray reactor head structure, comprising a hoisting assembly (30), an anti-seismic assembly (40), a first cable tray (10), and a second cable tray (20) which are arranged above a top cover (100) of a pressure vessel and located at the periphery of a control rod drive mechanism. The hoisting assembly (30) comprises a plurality of hoisting rods (31) and a support frame (32). The plurality of hoisting rods (31) are spaced part in the circumferential direction of the top cover (100) and are vertically connected to the top cover (100). The support frame (32) is connected to the tops of the plurality of hoisting rods (31). The anti-seismic assembly (40) is arranged above the top cover (100) and located below the support frame (32). The first cable tray (10) and the second cable tray (20) are symmetrically distributed on two sides of a reactor core, and are pivotably connected to the anti-seismic assembly (40). The dual-cable-tray reactor head structure can reduce the difficulty and time of center-of-gravity leveling in a hoisting stage during nuclear power plant installation and refueling outage, thereby improving hoisting efficiency and safety; said structure meets the segregation requirements for reactor head cables, thereby ensuring sufficient safety redundancy margin for the reactor head cables; and said structure enhances the convenience and economy of cable installation, maintenance, and replacement.

The invention provides an auxiliary connecting lock bottom structure of a pressure vessel annular welding opening cover, which is characterized in that a circle of lock bottom (2) is processed on a pressure vessel shell (1) in the circumferential direction, lock bottom connecting bosses (3) are processed on the lock bottom (2) at intervals, a circular process opening cover (4) is used for sealing and forming a process opening, and during annular welding, the process opening cover (4) is lapped on the lock bottom (2); the process opening cover (4) and the lock bottom connecting boss (3) are fixed through a countersunk bolt (7), a circumferential weld (5) is formed between the forming process opening and the process opening cover (4), and then a connecting welding spot (6) is formed on the upper portion of the countersunk bolt (7). The welding stress and the welding deformation of the long-welding-seam girth welding weldment are improved, the influence on the operation space of a process opening can be effectively reduced, the one-time welding qualification rate is increased, and the bearing capacity of a welding seam is improved.

The application relates to the technical field of assembling and fixing devices, in particular to an automatic assembling and fixing device for pressure containers and heads, which comprises a base, a supporting frame and a mounting ring are fixedly connected to one side of the base, a placing cylinder is rotationally connected to the inside of the mounting ring, and a fixing assembly is arranged in the base. When the first rack and the third gear form engagement or clamping locking, the third gear will be fixed, so that the second gear can be fixed by fixing the third gear, and the fixing of the second gear can fix the container cylinder body in the placing cylinder, thereby avoiding the unexpected autonomous rotation of the container cylinder body when the container cylinder body is single-point welded or touched by external force, preventing the misalignment and deviation of the cylinder body and the head butt joint ring seam, and the device can bear large torque impact after the first rack and the third gear are engaged or clamped and locked under heavy load, and there is no slippage after locking, so that the industry problem that the conventional locking cannot adapt to heavy load workpieces is solved.

The utility model relates to pressure vessel processing field, concretely relates to automatic forming equipment of pot cover of head, including lower mould seat, the top of lower mould seat is equipped with forming cavity, is equipped with the material block that pushes out to the head after forming upwards in forming cavity, one side of lower mould seat is equipped with the conveyer belt, the top of conveyer belt is equipped with the transversely extended guide rail, the guide rail is vertically arranged with conveyer belt, the electric sliding base is slidably installed on the guide rail, the lift cylinder that piston rod extends downward is installed on the electric sliding base, the piston rod of lift cylinder is rotatably installed with the supporting plate, the axial direction of supporting plate rotation is vertically extended, the annular ring that is used for holding up the head is fixedly installed in the end away from lift cylinder of supporting plate, the side away from supporting plate of annular ring is equipped with the opening that the bottom of head goes in or out, through annular ring, the head is held up and shifts to conveyer belt, then through conveyer belt, the head is conveyed to the next procedure.

The application provides a displacement device for gas in a pipette, comprising a receiving mechanism and an injection mechanism. The receiving mechanism comprises a receiving vessel containing liquid, and a first connecting pipe, wherein a first end of the first connecting pipe is sleeved outside a liquid outlet of the pipette, and a second end of the first connecting pipe extends into the liquid in the receiving vessel. The injection mechanism comprises a jet head, a second connecting pipe connected with a free end of the jet head, and a gas pump connected with a free end of the second connecting pipe. The jet head is configured to enter the pipette through the liquid outlet, and displace aerosol in the pipette under the action of the gas pump. The application has the advantages of simple structure, convenient operation, and convenient installation and disassembly.

This utility model relates to the field of polycrystalline material synthesis technology and discloses a polycrystalline synthesis apparatus, comprising: a pressure vessel having a receiving cavity; an ampoule disposed in the receiving cavity, the ampoule including a first heating section, a connecting section, and a second heating section connected in sequence, the diameter of the connecting section being smaller than the diameters of the first heating section and the second heating section; a loading boat with a nozzle at its head, the loading boat being disposed within the first heating section, one end of the nozzle extending downwards into the connecting section; a first heater located in the receiving cavity and surrounding the outer periphery of the first heating section; and a second heater located in the receiving cavity and surrounding the outer periphery of the second heating section; wherein the heating temperature of the first heater is higher than the heating temperature of the second heater. This utility model's polycrystalline synthesis apparatus improves product quality, reduces material loss, lowers production costs, and makes the polycrystalline synthesis process safer.

The utility model discloses an auxiliary positioning tool for sealing head welding, which belongs to the technical field of welding tools, and is characterized by comprising a supporting base, a pressure vessel barrel is arranged at the top of the supporting base, a sealing head body is arranged at the top of the pressure vessel barrel, and the sealing head body is arranged at the top of the pressure vessel barrel. The top of the supporting base is provided with a positioning turnover mechanism used in cooperation with a pressure container barrel, the top of the positioning turnover mechanism is provided with a downward pressing positioning assembly used in cooperation with an end socket body, the positioning turnover mechanism comprises a driving motor, and the bottom of the driving motor is fixedly connected with the top of the supporting base. An output shaft of the driving motor is fixedly connected with a supporting table, and the problems that an existing auxiliary positioning tool generally can only simply position and fix a seal head and a barrel of a pressure container, overturning and surface changing adjustment is inconvenient to conduct on the positioned and fixed seal head and the barrel, and therefore after one face is welded, the sealing head and the barrel cannot be turned over easily, and the sealing head and the barrel cannot be turned over easily are solved. The sealing head and the cylinder body need to be replaced manually, which is troublesome and brings inconvenience to the welding work.

The application discloses a method and system for generating, pattern matching and four-axis numerical control post-processing of fiber winding paths of unequal-pole hole composite material pressure containers, and belongs to the technical field of industrial software data processing. The method comprises the following steps: establishing an unequal-pole hole core mold model, independently setting a front-pole hole radius and a rear-pole hole radius; respectively establishing boundary conditions for front and rear heads, independently searching for a sliding coefficient and judging linear stability based on an arc length parameterized ordinary differential equation set and a shooting method; taking a pole hole turning radius and a residence angle as phase modulation parameters, jointly searching for N / k patterns and calculating a coverage rate; converting path points into four-axis winding machine coordinates considering the continuity of head slopes, safety gaps and C-axis postures; performing multi-axis speed planning and generating NC codes in combination with axis speeds, C-axis angular velocities and U-turn decelerations; and integrating path generation, pattern matching and post-processing in a same process and outputting NC programs. The application solves the problem that a single geodesic line is difficult to meet the constraint of different pole holes at two ends, and improves path convergence, pattern closeness and equipment motion adaptability.

The invention relates to the technical field of pressure vessel welding, one embodiment of the invention provides a girth welding machine for accessories in a tank, the girth welding machine is used for welding the pressure vessel and the accessories, the accessories are positioned on the inner wall of the pressure vessel in advance through spot welding, the girth welding machine comprises two sets of supporting rollers, the rotary support is provided for the pressure container; and the welding arm is arranged on one side of the supporting roller, and the welding arm extends into the pressure container. According to the device, the supporting roller rotates and drives the pressure container to rotate, the supporting wheel and the pressing wheel are used for being in rolling abutting connection with the rotating pressure container and the accessory correspondingly, so that the welding head can synchronously weld welding seams of the pressure container and the accessory in the rotating process, and automation of welding and positioning work before welding of the device is achieved through the design; the labor cost is greatly reduced, the safety and health of staff are effectively guaranteed, and the welding efficiency of the device is greatly improved.

A pressure vessel with an external jacket for temperature control of contents within the vessel is provided. The vessel has a shell and two opposing heads. The external jacket is installed on at least one of the heads, and heating or cooling fluid is circulated through the jacket for temperature control. The jacket is formed by a plurality of concentrically arranged conduit rings that are welded to the exterior surface of the head of the vessel. Adjacent conduit rings are connected by jumper lines to allow the heating or cooling fluid to flow between conduit rings. Each conduit ring has flared side portions that allow the side portions of adjacent conduit rings to be welded to the vessel in a single weld pass. A circular groove may be machined into the head of the vessel, and the outermost conduit ring may be welded to the head at the circular groove.

This invention relates to a video inspection method for the lower head of a pressure vessel without the need for hoisting the lower internal components. A video inspection robot is positioned above the lower grid plate, maintaining an initial straight-rod state. One video inspection channel is selected, and the robot is aligned with the channel. The robot moves downwards through the drainage holes of the lower grid plate until it reaches above the core support plate of the object being inspected. The robot drives the camera to swing, then rotates 360° to complete the video inspection at the current position. The robot returns to its initial straight-rod state to avoid collisions with the lower internal components during vertical movement. Before exiting, the robot returns to its straight-rod state and then moves upwards to above the lower grid plate. This process is repeated for all 26 channels to complete the foreign object video inspection. The presence of foreign objects is determined from the video images obtained during the above operations. This invention enables underwater video inspection of the lower head and lower internal components of a pressure vessel without hoisting them out.

The invention discloses a pressure vessel manufacturing intelligent production line which comprises at least two production lines, and the production lines comprise an edge rolling station, a run-on plate welding station, a longitudinal seam welding station, a roundness correction station, a shell ring assembling station, a girth welding station, an end socket assembling station, a girth welding station, a flaw detection station, a cleaning station and the like. On a production line of the pressure vessel, a U-shaped cache island is arranged between every two production stations, so that the temporary order inserting behavior in the production process is met, the plate carving behavior of the production line is improved, and the intelligence of the production line is improved.

The invention relates to a reactor top simulation device and a reactor top test system, a heat preservation structure is arranged between a pressure vessel and a reactor top structure, so that the heat preservation structure is arranged between the pressure vessel and the reactor top structure, and the influence of the pressure vessel on a temperature field and a flow field on the side where the reactor top structure is located is effectively simulated. The control rod driving mechanism test equipment is arranged in the bracket, and the cable bracket is arranged above the control rod driving mechanism test equipment, so that effective boundary environment conditions of the control rod driving mechanism test equipment are simulated, and a temperature field and a flow field in the control rod driving mechanism test equipment can be close to a required test environment. Besides, a plurality of simulators are arranged on the periphery of the control rod driving mechanism, part of the control rod driving mechanism is replaced by the simulators, and the temperature and the flow field of the environment where the control rod driving mechanism is located are built by heating assemblies on the simulators. Therefore, the effectiveness of the test structure is improved.

An internal expansion device for joining composite materials includes a metal connector, a pressure vessel, a hydraulic mechanism, and a hydraulic cylinder connected to the hydraulic mechanism. A cylinder telescopic rod is connected to the hydraulic cylinder. A front support plate is fixed to the front side of the hydraulic cylinder. An internal expansion head is connected to the front end of the cylinder telescopic rod via a connecting sleeve. The head of the internal expansion head is located inside the pressure vessel, and the bottom end of the internal expansion head passes through the metal connector and is threadedly connected to the connecting sleeve. The connecting sleeve is threadedly connected to the cylinder telescopic rod. A base is connected to the front side of the front support plate. A clamping seat is connected to the front end of the base. A clamping half-ring is hinged to the clamping seat. In this invention, the cylinder telescopic rod and the internal expansion head are connected by threads, preventing axial bending and ensuring reliable connection. During pressure vessel installation, the pressure vessel is clamped between the clamping half-ring and the clamping seat, axially parallel to the internal expansion head, resulting in uniform force distribution during internal expansion of the metal connector.

The application relates to the field of welding detection, in particular to a pressure container welding quality detection device, which comprises a machine shell, a laser welding head is arranged on the machine shell, a discharging mechanism is arranged on the machine shell, and the discharging mechanism is used for discharging welding powder; and a detection mechanism is arranged on the machine shell. The laser welding head can cooperate with metal powder to perform welding, the detection mechanism is used for detecting the laser welding head, the detection mechanism can be adjusted during detection, and the detection mechanism can detect the welding seam during the welding process of the laser welding head. When the pressure container is welded, the detection mechanism does not need to be adjusted in angle when linear welding is performed; when arc welding is performed, the adjusting mechanism drives the detection mechanism to rotate until the detection mechanism can detect the welding seam during the welding process of the pressure container. When welding is performed, the welding seam can be detected in real time, and when the welding seam has a problem, the welding can be directly stopped, and the welding position can be adjusted.

Provided is a pressure vessel capable of preventing a joint part from falling off. A pressure vessel (1) is provided with: a liner (10) having a cylindrical section (11) extending in the axial direction, a first end section (12A), and a second end section (12B); a joint part which is disposed so as to cover the first end part (12A), and which is for introducing and discharging a pressurized fluid into and out of the liner (10); the fiber is wound around the liner (10) and the joint part (20A), the joint part (20A) is provided with a main body part, a liner-side end surface (20a) and an opposite-side end surface (20b), the main body part extends along the axial direction, the main body part is provided with a reduced-diameter part (22), the diameter of the reduced-diameter part is reduced along with the distance from the liner (10) in the axial direction, the fiber is wound around the reduced-diameter part, and the opposite-side end surface (20b) is exposed from the fiber.

An interlocking dished head 3 for a pressure vessel 1, the cylinder 1 having collar 2 for engaging the dished end 3. The end cap side wall has teeth 4 mesh with pinion gear cogs 5 to rotate tabs 32 on

To provide an airless pump-type dispensing container that can suppress the rise in pressure inside the container body and prevent the contents from spraying out of the discharge port during use, even when containing and holding contents that include volatile components. [Solution] The container comprises a container body 1 having a filling space for filling contents, a pressing head 2 attached to the neck portion 12 of the container body 1 and which operates a pump mechanism 22 suspended and held within the neck portion 12 by repeatedly pressing the head body 23 to discharge the contents filled in the filling space M through a nozzle 26, and a middle tray 3 slidably positioned in the filling space M of the container body 1 and which slides to reduce the filling space M as the contents filled in the filling space M are discharged, wherein the middle tray 3 is held in place by its main body portion so as to be movable up and down and has a piston 4 that lowers the pressure in the filling space M by the amount of the lowering as the pressure in the filling space M rises.

The utility model discloses a pressure vessel end socket groove machining auxiliary device which comprises two connecting columns, connecting frames are fixedly connected to the two sides of the upper ends of the connecting columns, connecting rods are inserted into the connecting frames, pressing rods are connected to the upper sides of the connecting frames in a threaded mode, and the ends of the pressing rods make contact with the connecting rods. One side of the connecting rod is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a two-way screw rod, and the two sides of the two-way screw rod are in threaded connection with first limiting plates; the four opposite first limiting plates are arranged between the connecting column and the connecting rod to be matched with the second motor and the positioning rod for limiting so as to control rotation and stop of the supporting cylinder body, then the four second limiting plates are arranged in the rotating frame to be matched with the adjusting rod so that the sealing head can be connected, and then the supporting cylinder body can correspond to the sealing head by turning over the rotating frame. And then, the extension rod on one side is detached, meanwhile, the ejector rod is installed at the bottom end of the connecting column, operation convenience can be improved, and adaptability is improved.

The utility model discloses a boiler pressure vessel connecting pipe fillet weld polishing device, and relates to the technical field of boiler pressure vessel manufacturing. The connecting pipe clamping device comprises an upper U-shaped support and a lower U-shaped support, the inner side of the upper U-shaped support and the inner side of the lower U-shaped support are fixedly connected with connecting pipe clamping seats through bolts, and the bottom of the upper U-shaped support is symmetrically and fixedly connected with connecting rods. The connecting pipe clamping seats matched with the connecting pipes are fixed on the inner sides of the upper U-shaped support and the lower U-shaped support, so that the grinding device can be fixed on the connecting pipes with different pipe diameters, the screw rod is rotated to drive the mounting seat and the grinding motor to move up and down for adjustment, and the welding seam grinding head can be effectively contacted with the fillet welding seam of the connecting pipe; accordingly, fillet welds of the connecting pipes with different pipe diameters can be ground, practicability is higher, and through the arranged driving piece, a worker can conveniently drive the weld grinding head to rotate around the semi-annular guide rail to quickly grind the fillet welds of the connecting pipes.

The utility model discloses a steel pressure vessel head forming fixing device, including fixed platform, the top of fixed platform is equipped with the head piece, the outside of fixed platform is equipped with two side fixed parts, the bottom surface fixed connection of fixed platform has the support cover, the inner wall fixed mounting of support cover has double -end motor, two output ends of double -end motor all fixed mounting have screw rod, the outer surface of two screw rods all is connected with internal thread sliding block, two internal thread sliding blocks's top all fixed mounting have fixed clamping plate. This fixed device, through the inside setting of support cover double -end motor, and with screw rod and internal thread sliding block composition transmission structure, can adjust the interval of two fixed clamping plates flexibly, in addition two sliding clamping plates can adjust the distance through the telescopic of two electric cylinders, and then can be according to the different size, shape of head piece and carry out self -adaptation and fit, need not to change special fixture, can adapt to multiple specifications head piece.

The utility model relates to the technical field of stern shaft inspection, in particular to a ship stern shaft sealing inspection device, which comprises a fixing frame, a first water tank, a second water tank, a third water tank and a fourth water tank. According to the device, a sealing box, a sealing plate, a first sealing strip, a second sealing strip, a third sealing strip, a fourth sealing strip and a stern shaft are placed in the sealing box, the sealing box is covered with the sealing plate, a limiting plate slides along a sliding groove, at the moment, the first sealing strip makes contact with the second sealing strip, a gap between the sealing plate and the sealing box is squeezed, and a completely-closed space is formed; meanwhile, after the sealing box is covered with the sealing plate, the water injection head is embedded into the through hole, the fourth sealing strip makes contact with the third sealing strip at the moment, the gap between the water injection head and the through hole can be filled, the gap between the water injection head and the through hole is avoided, and then the sealing performance testing work of the tail shaft is achieved.

The invention discloses a wake flow energy recovery method and system for naval vessel formation collaborative sailing, and the method comprises the steps: collecting a flow field vector in real time through a flow field sensing unit disposed at the tail part of a leading vessel, and generating a wake flow energy density map according to the flow field vector; according to the wake flow energy density map and the real-time speed of the following boat, the attack angle and the rotating speed of a micro water turbine array arranged at the head of the following boat are dynamically adjusted, so that recyclable kinetic energy in unit time is maximized; and calculating the energy consumption of the naval vessel formation according to the recovery power of the micro water turbine array of the following vessels and the propulsion power of the following vessels, and adjusting the distance between the following vessels in combination with the wake flow energy density map to minimize the energy consumption of the naval vessel formation.

Beverage container with a receiving vessel (10) having at least two liquid-tight separated chambers (1) and (2) for receiving and dispensing the same or different liquids, characterized in that the receiving vessel (10) has a coupling device (4) which connects the two chambers (1) and (2) to each other in the head part in a liquid-tight manner and comprises at least two rotatable components (9), which includes at least one flow channel (5) between the chambers (1) and (2) for dispensing and mixing the contained liquids.

The utility model discloses an end socket for a pressure container, which comprises a container body, an assembly groove is arranged at the top of the container body, a positioning groove is arranged in the assembly groove, an end socket body is arranged at the top of the container body, and a fitting edge is fixedly connected to the bottom of the end socket body. The fitting edge is slidably connected into the assembling groove, a positioning block is fixedly connected to the surface of the fitting edge, the positioning block is clamped into the positioning groove, and a welding seam is formed between the fitting edge and the assembling groove. The sealing head body is moved through the lifting lugs, the end face of the sealing head body corresponds to the end face of the container body, the sealing head body is rotated, the positioning block is inserted into the positioning groove, meanwhile, the attaching edge is moved into the assembling groove, and a welding seam is formed at the connecting position, so that a worker can conduct welding conveniently; and the sealing head body is not easy to move, so that the stability and the accuracy in the welding process are ensured.