45results about How to "Play the effect of reducing vibration and noise" patented technology

The invention provides a vapor-liquid two-phase flow tube shell type heat exchanger. The heat exchanger comprises a shell, wherein sealing heads are arranged at two ends of the shell respectively; tube plates are arranged in connection positions between the sealing heads and the shell; heat exchange tubes are connected with the tube plates at two ends; vapor phase in vapor-liquid two-phase flow can be condensed into liquid phase in the heat exchange process; the vapor-liquid two-phase flow flows in a tube process; separation devices used for decreasing vibration and reducing noise are arranged in the heat exchange tubes; a plurality of separation devices are arranged in the same heat exchange tube; the length of the separation devices is gradually reduced along the flowing direction of flow in the heat exchange tubes. According to the vapor-liquid two-phase flow tube shell type heat exchanger, the vibration of the tubes can be decreased to a maximum extent due to the length change of the separation devices when the vapor-liquid two-phase flow flows in the tubes; the noise level is reduced; meanwhile, the flowing resistance is reduced; the heat exchange uniformity is improved.

The invention provides a condensable heat exchanger with annular separation devices. The condensable heat exchanger comprises a shell. End sockets are arranged at the two ends of the shell correspondingly. A pipe plate is arranged at the connecting position of each end socket and the shell. A heat exchange pipe is connected with the pipe plates at the two ends. A steam phase in steam-phase and liquid-phase flow can be condensed to form a liquid phase in the heat exchange process, and the steam-phase and liquid-phase flow flows in a pipe pass. The separation devices are arranged in the heat exchange pipe. Each separation device comprises a core and a housing, wherein the core is arranged in the housing, the housing is connected with and fixed to the inner wall of the heat exchange pipe, the core comprises a plurality of concentric pipes and fins, and the fins are connected with the adjacent concentric pipes. According to the heat exchanger of a novel structure and with the separation devices, heat transfer is intensified when the steam-phase and liquid-phase flow flows in the pipe, meanwhile, pipe vibration is weakened, and the level of noise is lowered.

The invention belongs to the technical field of railway traffic equipment and relates to a steel rail cladding vibration reduction structure of an embedded type railway capable of being resistant to corrosion for a long time in the operation process and a preparation method of the steel rail cladding vibration reduction structure. The steel rail cladding vibration reduction structure comprises a steel rail, a macromolecule elastic damping body layer and a framework material. The outer layer of the steel rail is filled with the macromolecule elastic damping body layer. The two side surfaces and the bottom surface of the steel rail are wrapped with the macromolecule elastic damping body layer which is made of a two-component polyurethane grouting material. Construction is convenient and easy, and the vibration and noise reduction effects of the steel rail can be effectively improved.

A sub-block vibration-damping rotor includes a magnet, an outer core, an inn core, an engagement portion, and an elastic bonding portion. The outer iron core is provided with a through channel, a magnetic groove, a plurality of positioning gluing holes and a reinforcing hole which penetrate the outer iron core in the axial direction. The magnet is inserted in the magnetic slot, and the inner coreis embedded in the channel inside the outer core. A PBT material is injected into that reinforcing hole, and the PBT material is distributed at both ends of the outer iron core along the reinforcing hole to form a joint part, so that the out iron core and the magnet are molded into a one-time molded product by one-time injection molding of the PBT material. An elastic glue is injected into the positioning glue hole and an elastic glue part is integrally formed at both ends of the outer iron core and the inner iron core and between the outer iron core and the inner iron core respectively, so that the primary molded product and the inner iron core are secondary molded into a secondary molded product by the elastic glue. The elastic glue can cushion the force between the outer core and the inner core, so as to play the effect of vibration and noise reduction.

The invention provides a length-changing non-condensable gas porous flow stabilizer heat exchanger which comprises a shell. Sealing heads are arranged at the two ends of the shell correspondingly. A pipe plate is arranged at the connecting position of each sealing head and the shell. Heat exchange pipes are connected with the pipe plates at the two ends. A gas phase in gas-liquid two-phase flow isinsoluble or indissolvable gas, that is, gas cannot be dissolved in liquid in the heat exchange process. Flow stabilizers used for vibration reduction and noise reduction are arranged in each heat exchange pipe. The corresponding multiple flow stabilizers are arranged in the same heat exchange pipe. In the flowing direction of fluid in the heat exchange pipes, the lengths of the flow stabilizersare gradually decreased to a certain position, and then the lengths of the flow stabilizers are gradually increased from a certain position. According to the length-changing non-condensable gas porousflow stabilizer heat exchanger, through length changing of the flow stabilizers, when gas-liquid two-phase flowing exists in a pipeline, pipeline vibration is weakened to the largest degree, the noise level is reduced, and meanwhile flowing resistance is reduced.

The invention provides a liquid-vapor two-phase flow tubular shell type heat exchanger. The heat exchanger comprises a shell, wherein the two ends of the shell are separately provided with end sockets, tube plates are arranged at the connecting positions of the end sockets and the shell, and heat exchange pipes are connected with the tube plates at the two ends; a vapor phase in liquid-vapor two-phase flow can be condensed into a liquid phase in the heat exchange process, and the liquid-vapor two-phase flow flows in a tube pass; and flow stabilizing devices used for reducing vibration and noise are arranged in the heat exchange pipes, a plurality of flow stabilizing devices are arranged in the same heat exchange pipe, and the length of the flow stabilizing devices is gradually reduced in the flowing direction of fluid in the heat exchange pipes. According to the heat exchanger provided by the invention, through the length variation of the flow stabilizing devices, when the liquid-vaportwo-phase flow occurs in the pipeline, the vibration of the pipeline is reduced to an utmost degree, and the noise level is reduced; and at the same time, flow resistance is reduced, and the heat exchange uniformity is improved.

The invention provides a steady flow evaporator. The steady flow evaporator comprises an inlet header, an outlet header, and a heat exchange component connected between the inlet header and the outletheader, wherein the inlet header and the outlet header are respectively connected with a steam inlet pipe and a condensate outlet pipe; the steam inlet pipe of the inlet header is internally providedwith a flow stabilizer, and the flow stabilizer has a sheet structure; the sheet structure is arranged on the cross section of the steam inlet pipe; the flow stabilizer is formed by a square structure and a regular octagonal structure, so that a square through hole and a regular octagonal through hole are formed. The flow stabilizer with the novel structure is adopted, namely, a flow stabilizer in a loop heat pipe is subjected to field transfer and is applied to an inlet pipe at an evaporation end of the loop heat pipe, so that a water hammer phenomenon caused by the space expansion when a steam-water mixture enters the inlet header can be reduced.

The invention discloses a vibration reduction mechanism of a stator winding machine. The vibration reduction mechanism comprises a rack and two winding driving mechanisms. Each winding driving mechanism comprises a power source, an upper flying fork rod, a cam, a sliding block, a winding head and a guide rod, wherein the guide rod is vertically arranged on the rack, the sliding block is installedon the guide rod in a sleeving mode, the cam is rotationally connected to the rack and is driven by the power source to rotate, the winding head is arranged on the upper flying fork rod, the lower endof the upper flying fork rod is connected with the sliding block, and the middle of the upper flying fork rod is connected with the rack in a sliding mode. According to the two winding driving mechanisms, the cams of the two winding driving mechanisms rotate periodically with a degree difference on phase in the working process. The vibration reduction mechanism has the advantages that since the two winding driving mechanisms are arranged at the left and the right of the rack respectively, the cams of the two winding driving mechanisms rotate periodically with the degree difference of 180 degrees on phase in the winding working process, in this way, inertia forces of up-and-down motion of the two groups are mutually offset, consequently, vibration of the winding machine is reduced, and theeffects of reducing vibration and lowering noise are achieved.

The invention discloses an anti-rust gear, which comprises a gear main body. The gear main body is provided with external teeth, and an external tooth groove is arranged between the external teeth and the external teeth. An oil injection hole is provided inside, and an oil groove is arranged inside the inner hole of the main body of the gear, and the oil injection hole communicates with the oil groove. There is nylon filler, and the outer surface of the gear body is provided with a protective layer, the protective layer is a sulfide layer, and the thickness of the sulfide layer is 3-6mm. The invention effectively softens the hardness of the gear surface by increasing the structure of vulcanized material on the working surface of the gear, increases the lubrication between the meshing gears, improves friction, reduces wear, and thus prolongs the service life of the gear.

The invention provides a vapor-liquid two-phase flow tube and shell heat exchanger. The tube and shell heat exchanger comprises a shell. The two ends of the shell are provided with end sockets. Tube plates are arranged at the junctions between the end sockets and the shell. Heat exchange tubes are connected with the tube plates at the two ends. A vapor phase in vapor-liquid two-phase flow can be condensed into a liquid phase in the heat exchange process. The vapor-liquid two-phase flow flows in a tube pass. Current stabilizers are arranged in the heat exchange tubes. Each current stabilizer comprises a core body and an outer shell, the core body is arranged in the outer shell, the outer shell is connected and fixed to the inner wall of the corresponding heat exchange tube, the core body isan integrated structural part extending in the length direction of the outer shell, and the structural part is provided with a plurality of through holes. The current stabilizer heat exchanger of a novel structure, provided by the invention, conducts enhanced heat transfer when the vapor-liquid two-phase flow flows in a pipeline. Meanwhile, vibration of the pipeline is weakened, and noise is lowered.