162 results about "Head (vessel)" patented technology

The invention discloses a forging method for a pressure vessel bottom head transition section of a second-generation nuclear power station. The forging method is used for forging the pressure vessel bottom head transition section of the second-generation nuclear power station, the pressure vessel bottom head transition section comprises a straight section and a conical section, the inner diameter of the straight section is not less than 3000mm, the outer diameter of the straight section is not less than 4000mm, an inner hole of the conical section is provided with a bevel edge, the minimum inner diameter of the conical section is smaller than the inner diameter of the straight section, and the overall height of the conical section is not less than 2500mm. A megaton free forging press is used, and double-vacuum steel ingots are used as raw materials. The forging method includes the steps: firstly, primarily drawing; secondly, cogging; thirdly, upsetting, forging a central hole and pre-broaching; fourthly, secondarily drawing; fifthly, flattening a large end of a forging to form a conical hole of the forging; and sixthly, broaching. The forging manufactured by the forging method can meet the technical requirements of the pressure vessel bottom head transition section of the nuclear power station, and is compact, reasonable in metal flow line distribution and not easy to crack. The invention further discloses a special mould sleeve for the forging method.

The invention discloses an expanding device of a moving block, comprising a pull rod, an expanding head, an expanding block, a guiding disc, a sleeve barrel, a positioning block, a locking handle and a stop disc, wherein the pull rod is arranged in the sleeve barrel; one end of the pull rod is extended out of the sleeve barrel and is sequentially sleeved with the circular stop disc, the pyramidal expanding head and the circular guiding disc which are respectively provided with a center hole; the other end of the pull rod, which is extended out of the sleeve barrel and is provided with screw threads, passes through a hole arranged on the positioning block and is connected with the locking handle by screw threads; the expanding head is fixedly connected with the pull rod; and a plurality of T-shaped grooves connected with the expanding block are arranged on the pyramidal surface of the expanding head by equal distance. The expanding device of the moving block has simple structure and low manufacturing cost, is convenient to assemble and disassemble and can effectively reduce or eliminate the welding deformation of a vessel or a steel tube.

The invention relates to a combined TOFD and phased array imaging scanner for a weld of a seal head for a pressure vessel. The scanner comprises a main support composed of a front beam, a back beam, a left beam, a right beam and a middle beam; the front ends of the left beam and the right beam are respectively hinged with two ends of the front beam, the front part of the middle beam is in fixed connection with the middle part of the front beam, the back beam comprises a double-end screw which has symmetrical left and right sides, screw threads at a left part and a right part of the screw havedifferent spiral directions, the middle part of the screw is connected with the rear part of the middle beam, the screw threads at the left part and the right part of the screw are respectively spirally connected with a left nut and a right nut, the left and right nuts are connected with the rear ends of the left and right beams, and four corners of the main support are respectively provided witha magnetic wheel mechanism. The scanner provided in the invention is applicable to detection of circumferential welds of heads with different sizes for containers, enables a probe to always carry outdetection along a circular weld, ensures detection precision and supports weld detection of a plurality of workpieces like pipelines, butt flat plates, etc.

The invention deals with the field of screwing heads for small trigger-type pumps or triggers and namely for applying, on vessels, triggers equipped with a threaded securing ring nut (2). This screwing head (1) is rotated around a vertical axis through a permanent magnet-type clutch and comprises four rollers (5) which tighten the toothed ring nut (2) when screwing it; said rollers (5) are supported by vertical arms (4) whose axes are arranged at 90° one from the other on a circumference with its center on the rotation axis of the screwing head. The vertical arms (4) and the four rollers (5) are simultaneously carried along a radial direction towards said ring nut through an oscillating movement.

A pressure cyclone is disclosed having a concave top head, wherein the concave top head has a substantially flat roof disposed in the interior of the cyclone vessel. An inlet is tangentially-coupled to the vessel and has an inlet nozzle disposed therein and configured to smoothly transition into the cyclone vessel to create a vortex that separates solid particulates from an incoming particulate-fluid suspension. In particular, the one surface of the inlet nozzle is tangent to the inner surface of cyclone vessel and another surface of the inlet nozzle is parallel and continuous with the substantially flat roof. An inlet casing is disposed around a length of the inlet nozzle and configured to transition from a circular casing to an elliptical casing along the length of the inlet nozzle, and couple to the vessel with the elliptical casing.

The invention provides a device for polishing a welding seam inside a pressure vessel. The device comprises a moving base; a first angle adjusting device, wherein the first angle adjusting device is arranged at the upper end of the moving base; a mounting base, wherein the mounting base is arranged at the working end of the upper end of the first angle adjusting device, the to-be-polished pressure vessel is mounted at the upper end of the mounting base, and a dust suction device is further connected to the mounting base or the moving base. a fixed base, wherein the fixed base is located on one side of the moving base, and the moving base is provided with a limiting block used for being inserted into a limiting groove in the fixed base and locked through a locking piece; a sealing cover, wherein the sealing cover is detachably connected to the upper end of the mounting base, a first opening is formed in the side, close to a sealing head, of the sealing cover, a sealing door capable of being opened or closed is connected to the first opening, and a dust suction pipe of the dust suction device is connected to the sealing cover; and a polishing device, wherein the polishing device is installed at the upper end of the fixed base, and the polishing end of the polishing device extends into the pressure vessel to be polished from the first opening. By arranging the automatic polishing device, automatic polishing is achieved, workers are prevented from entering the vessel for polishing, and the device is safe, environmentally friendly and high in polishing efficiency.

The invention discloses a pressure vessel spherical head inner wall polishing device, and relates to the technical field of pressure vessels. The pressure vessel spherical head inner wall polishing device comprises a fixing frame, a driving motor is fixed to the bottom of a supporting frame, and a polishing mechanism for polishing the inner wall of a spherical head is arranged on a steering shaft.According to the pressure vessel spherical head inner wall polishing device provided by the invention, a supporting mechanism can be driven by a transverse adjusting mechanism to achieve the supporting adjusting effect of a transverse position, flexible adjustment is conducted according to the size of the spherical head to achieve stable supporting of the spherical head, a pressing disc can be driven by a lifting mechanism to be adjusted in the vertical height, and therefore the spherical head is pressed and clamped between the pressing disc and the supporting mechanism, the inner wall polishing stability can be ensured; the polishing mechanism can be driven by a forward and reverse rotating mechanism to achieve clockwise and anticlockwise alternate rotation, so that a polishing arc blockcan achieve the reciprocating swing effect while rotating in the spherical head, and the sufficient and thorough polishing effect on the inner wall of the spherical head is guaranteed.

The invention provides a multifunctional tin ore collecting, screening and packaging vessel and is suitable for offshore operation. The problem that in the prior art, a mining vessel is large in power waste and poor in wave resisting capability is solved. The multifunctional vessel comprises a vessel body, wherein a propeller is arranged at the tail portion of the vessel body, a bridge frame is hinged and connected to the vessel body through a bridge frame fixing base, a cutter suction head is arranged at the tail end of the bridge frame, a lifting winch for achieving lifting of the bridge frame is arranged on the vessel body, upper and lower layers of decks re arranged on the vessel body, a conical screen and a primary jigging machine which are vertically arranged are arranged on the upper layer of decks, and a secondary jigging machine located below the primary jigging machine is arranged on the lower layer of decks. The multifunctional tin ore collecting, screening and packaging vessel is suitable for tin ore collecting, screening and packaging in offshore zone operation, is small in power waste and has very good practicability.

The invention discloses a cylinder rounding device of a pressure vessel. The cylinder rounding device of the pressure vessel includes a hollow disk support, eight supporting rods and a detection mechanism. The supporting rods include steel rods, jacks, roller supporting heads and supporting arms. One ends of the steel rods are evenly connected to the hollow disk support by screw threads. The two ends of the jacks are separately welded to the steel rods and the supporting arms, and the supporting arms are connected with the roller supporting heads. According to the cylinder rounding device of the pressure vessel, the problems of large measurement errors and multiple human factors occurring in a traditional cylinder side rounding process are solved, meanwhile, the degree of automation of detection is improved, and the adjustment efficiency is greatly improved.

The invention provides a static sealing structure and a pressure vessel with the static sealing structure. The pressure vessel comprises a vessel shell, a vessel cavity formed by a cavity inside the vessel shell and a groove structure opened at the top of the vessel shell and in communication with the vessel cavity; and the diameter of the groove structure in the horizontal direction is larger than that of the vessel cavity in the horizontal direction. The static sealing structure is assembled in the groove structure and comprises a sealing end and a sealing assembly, the sealing end comprisesa head and a sealing shaft rod connected with the head, the sealing assembly comprises a sealing ring and a sealing check ring which sleeve the sealing shaft rod part in an up-and-down contact manner, so that functional partitioning is achieved, and if a workpiece in a functional area goes wrong, a new workpiece can be used for replacement; the whole pressure vessel does not need to be scrapped,and the use cost is reduced.

The invention relates to a steel plate for a seamless pressure vessel head and a production process of the steel plate. The steel plate comprises the following raw materials in percentage by weight: 0.08%-0.12% of C, 0.10%-0.30% of Si, 0.80%-1.20% of Mn, not more than 0.020% of P, not more than 0.005% of S, 0.01%-0.06% of Alt and the balance of Fe and inevitable mixed elements. The production process comprises a plate blank reheating procedure, a rolling procedure and a steel plate feeding procedure. Through reasonable component design and rolling process, a Q295A steel plate of which the width is greater than or equal to 3200mm is produced; the yield strength of the steel plate fluctuates within the range of 295-345MPa and does not exceed 50MPa; the steel plate is good in molding property; the overall plate is stamped and molded after feeding; a welding procedure and a weld joint detection procedure are concealed; the production procedure and the production cost are greatly reduced; and the quality risk of cracking of the weld joint is avoided.

The invention belongs to the field of seal heads, and particularly relates to a seal head protection device for a tank body of a transportable pressure vessel. The seal head protection device comprises wear-resistant elastic layers, toughening layers and a foaming layer, wherein the foaming layer is positioned between the two toughening layers; one side, away from the foaming layer, of each toughening layer is connected with the corresponding wear-resistant elastic layer; the outer wall of each wear-resistant elastic layer is attached to the outer wall of a seal head; and the seal head protection device further comprises a pair of permanent magnets positioned in the foaming layer, wherein the two permanent magnets are arranged opposite to each other and the opposite sides are homopolar. The seal head protection device is arranged at the seal head of the tank body, and comprises a plurality of protection layers which are matched with one another, the strength, the elasticity and the buffering and shock-absorbing performance of various materials adopted by the plurality of protection layers are tightly combined, the capability of resisting collision and impact of the seal head of pressure vessels such as the tank body in the transportation process is improved, the safety of the pressure vessels such as the tank body in the transportation process is improved, and the potential risks and losses in the transportation process are reduced.

The invention discloses a naval vessel underwater explosion bubble protection device and a protection method.The protection device comprises a hydrofoil strut of a hollow structure and a hydrofoil, a rotating shaft used for adjusting the attack angle of the hydrofoil is arranged in the hydrofoil in the radial direction in a penetrating mode, the hydrofoil strut is fixed to the bottom of a naval vessel head, and an air injection mechanism matched with the hydrofoil is arranged at the bottom of the naval vessel head; the lower ends of the two hydrofoil supporting columns are communicated with the upper ends of the hydrofoils in a sealed mode, and stroke control mechanisms matched with the rotating shafts in a linkage mode are arranged in the hydrofoil supporting columns correspondingly. According to the invention, super-cavitation bubbles and a moving cavitation field can be rapidly generated and are enabled to generate coupling response with underwater explosion bubbles, so that the jet flow and migration directions of the underwater explosion bubbles are changed, the damage effect of bubble load on a naval vessel is greatly reduced, the input cost is low, and the operation is simple. And the protection efficiency and the protection effect of bubble impact resistance of the naval vessel structure are greatly improved.

The invention relates to the technical field of nondestructive detection, in particular to a nondestructive detection device for a pressure vessel and a working method thereof.The nondestructive detection device comprises a detection box, a supporting plate is arranged on one side of the detection box, a guide plate is arranged on the top side of the supporting plate, a placement moving plate is arranged on the outer side of the guide plate, and the pressure vessel is arranged on the top side of the placement moving plate; a first motor is arranged on the top side of the detection box, a connecting disc is arranged at the shaft end of the first motor, a double-acting air cylinder is arranged on the bottom side of the connecting disc, a first one-way air cylinder and a second one-way air cylinder are arranged at the shaft ends of the two sides of the double-acting air cylinder respectively, and a first detection head and a second detection head are arranged at the shaft ends of the first one-way air cylinder and the second one-way air cylinder respectively. The nondestructive detection device for the pressure vessel is convenient and fast to operate, realizes mechanical automatic detection, works efficiently and high-quality, and reduces manpower consumption.

The invention discloses a large-scale pressure vessel tapping and beveling all-in-one machine. The all-in-one machine comprises a rectangular frame, a cylindrical wall, a plasma cutting head, a fixingblock, a rocker, a positioning groove, a positioning rod, a motor and a support. The all-in-one machine has the beneficial effects that the motor drives the rocker to rotate, the rectangular frame isalways attached to the cylinder wall in the rotating process, the plasma cutting head always faces a rotating shaft, the angle is adjustable, grooves of various angles can be machined, the position of the positioning rod can be adjusted on the rocker, holes of different diameters can be cut, operation is easy, convenient and fast, the groove machining quality is high, the characteristics of beingsmall, portable and easy to operate are achieved, single-piece small-batch machining production can be carried out, and a round hole with a standard groove can be simply and rapidly cut.