5results about How to "Shorten the axial distance" patented technology

The utility model relates to the technical field of corrugated pipe mechanical sealing devices, and discloses a three-end-face corrugated pipe mechanical sealing device which comprises a first corrugated pipe assembly, a first movable ring, a first gland, a second corrugated pipe assembly, a second movable ring, a flow guide sleeve, a third corrugated pipe assembly, a static ring and a shaft sleeve. A first cavity is formed among the first corrugated pipe assembly, the first movable ring and the side wall of the shaft sleeve, a second cavity is formed among the third corrugated pipe assembly, the static ring, the first gland, the first corrugated pipe assembly and the first movable ring, and a third cavity is formed among the second corrugated pipe assembly, the second movable ring, the third corrugated pipe assembly and the static ring. The side wall of the second cavity and the side wall of the third cavity are each provided with a connector. According to the three-end-face corrugated pipe mechanical sealing device, the mode that the second corrugated pipe set and the third corrugated pipe set are arranged in the radial direction of the circumference of the section of the three-end-face corrugated pipe mechanical sealing device in an overlapped mode is adopted, the third corrugated pipe set is added while the overall axial distance of the sealing is not increased, and the three-end-face corrugated pipe mechanical sealing device is formed.

This invention belongs to the technical field of ground-based heavy-duty gas turbines, and provides a combustion chamber device for ground-based heavy-duty gas turbines. It includes several circumferentially distributed combustion chamber stages, each comprising a first channel and a second channel interconnected from front to back. A micro-mixing combustion chamber is disposed within the first channel, used to mix and burn the mainstream gas from the compressor with fuel oil. An integrated baffle blade is disposed within both the first and second channels, arranged along the flow direction of the mainstream gas flow. A cooling assembly includes a cold source and several microchannels disposed within the integrated baffle blade. The cold source cools the integrated baffle blade by supplying cooling gas into the microchannels. This invention can significantly reduce the amount of cooling gas used during gas turbine operation while maintaining considerable combustion efficiency.

The utility model discloses a kind of quick disassembly limiting structure of robot joint module, the structure includes two connecting pieces, sleeve kit, fixed part and hinge connecting block, wherein sleeve kit is made of two clamps, and quick disassembly is realized by screw on fixed part, the lug of the outer ring surface of two clamps cooperates with limiting block, ensure that motor corner is limited within 360 degrees, effectively avoid internal component damage caused by excessive rotation, the device adopts clamp structure, significantly reduce axial gap, make joint module structure more compact, by screwing loose fastening screw, joint module can be quickly disassembled, greatly improve maintenance efficiency, the design of limiting block and lug, avoid motor output end directly contact limiting block, improve reliability and service life, the utility model is suitable for quick disassembly and maintenance of robot joint module, with the characteristics of simple structure, convenient operation, high reliability, with wide application prospect and practical value.

The application discloses a kind of plasma arc welding torch, to solve the technical problems of poor cooling effect of existing welding torch, nozzle disassembly and maintenance are complicated, tungsten needle is low, the service life of gun body is short.It includes gun body assembly and the gun head assembly detachably mounted on gun body assembly, tungsten needle, centering device, nozzle, tungsten needle limiting component and cooling waterway component are arranged in gun head assembly;Cooling waterway component constructs independent negative electrode, positive electrode double cooling waterway, adopts sectional type surrounding flow channel design;Nozzle is provided with annular positioning boss, and forms two-stage coaxial limiting system with centering device, gun body assembly integrates independent ion gas, double gas path structure of shielding gas, and the tail of gun adopts integrated linkage quick-release structure.The application greatly improves the cooling efficiency of welding torch and the centering accuracy of tungsten needle under the premise of ensuring compact structure, realizes quick disassembly and maintenance of wearing parts, effectively prolongs the service life of welding torch, and can be widely adapted to various high-load continuous welding industrial scenes.

The invention aims to provide a symmetrical pole tooth embedded magnetofluid sealing device which comprises a shell, a pole shoe, a magnetism isolating ring and a magnetism conducting ring, the pole shoe is arranged on a rotating shaft in a sleeving mode, the outer circle face of the pole shoe makes contact with the inner circle face of the shell, the magnetism isolating ring is buckled on the outer circumferential face of the middle of the rotating shaft, and a left pole tooth ring is arranged on the contact portion of the pole shoe and the rotating shaft and the left end face of the magnetism isolating ring. A plurality of groups of left pole teeth are arranged on the left pole tooth ring, and a left permanent magnet ring is arranged on the lower end surface of the left pole tooth ring; a right pole tooth ring is arranged at the contact part of the pole shoe and the rotating shaft and on the right end surface of the magnetism isolating ring; and a plurality of groups of right pole teeth are arranged on the right pole tooth ring. The problems that a traditional magnetofluid sealing device is poor in sealing effect and uneven in magnetizing under the large-shaft-diameter working condition can be solved, the permanent magnet is arranged on the rotating shaft, the overall diameter of the annular permanent magnet is effectively reduced, and uneven magnetizing caused by the too large diameter is avoided; the axial pole teeth of the pole shoes are embedded into the annular grooves for installation, and the magnetism isolating rings are arranged, so that the magnetic flux distribution is more uniform, and the sealing performance is better.