161results about How to "Achieve steady flow effect" patented technology

The invention provides a heat pipe which comprises an evaporation collecting pipe, a condensation collecting pipe, ascending pipes and return pipes, wherein the ascending pipes are communicated with each of the evaporation collecting pipe and the condensation collecting pipe; the evaporation collecting pipe is positioned at the lower part; the condensation collecting pipe is positioned at the upper part; a fluid absorbs heat and evaporates in the evaporation collecting pipe, the vapor passes through the ascending pipes to enter the condensation collecting pipe and is condensed in the condensation collecting pipe after being subjected to heat exchange, and the condensed fluid returns back into the evaporation collecting pipe through the return pipes; the flow stabilizing devices are arranged in each of the same ascending pipe; the lengths of the flow stabilizing devices are constantly increased in the height directions of the ascending pipes;. According to the heat pipe with multi-hole flow stabilizing devices, the lengths of the flow stabilizing devices are changed, so that when vapor-liquid two-phase flows exist in the ascending pipes, heat transfer is enhanced, the vibration of the ascending pipes is weakened, and the noise level is reduced.

The invention provides a steam boiler. The steam boiler comprises an upper boiler barrel, a lower boiler barrel, ascending pipes and descending pipes, wherein the ascending pipes and the descending pipes are arranged between the upper boiler barrel and the lower boiler barrel; the ascending pipes are internally provided with flow stabilizing devices, the same ascending pipe is internally provided with a plurality of the flow stabilizing devices, and the diameters of through holes of the flow stabilizing devices are smaller and smaller in the fluid flowing direction of the ascending pipes. The steam boiler is provided with the flow stabilizing devices of novel structures, and through the change of the diameters of the through holes, when gas-liquid two-phase flowing exists in the ascending pipes, heat transfer is strengthened; and meanwhile, vibration of the ascending pipes is weakened, and the noise level is lowered.

The invention provides a steam boiler which comprises an upper boiler barrel, a lower boiler barrel, ascending pipes and descending pipes. The ascending pipes and the descending pipes are connected between the upper boiler barrel and the lower boiler barrel. Flow stabilizing devices are arranged in the ascending pipes. Each flow stabilizing device comprises a core body and a shell, wherein the core body is arranged in the shell, the shell is connected and fixed to the inner wall of the corresponding ascending pipe, and the core body is formed by adjacently connecting a plurality of pipes in a combined mode. According to the steam boiler, the flow stabilizing devices are of novel structures; and when vapor-water two-phase flow exists in the ascending pipes, heat transfer is enhanced, meanwhile, the vibration of the ascending pipes is weakened, and the noise level is reduced.

The invention provides a loop heat pipe comprising an evaporation header, a condensation header, a riser tube and a return tube; the riser tube is in communication with the evaporation header and thecondensation header, the evaporation header is located at a lower portion, and the condensation header is located at an upper portion; the fluid absorbs heat in the evaporation header and evaporates,passes through the riser tube and enters the condensing header, and condenses after heat exchange in the condensing header, and the condensed fluid returns to the evaporation header through the returntube; a flow stabilization device is disposed in the riser tube, and the flow stabilization device comprises a central rod disposed along a central axis of the riser tube and a plurality of radial rods extending radially along the central rod; the radial rod is provided with a plurality of fins extending downward from the radial rod, the fins having a tip with the tip facing downward. The invention provides a loop heat pipe of a new type of flow stabilization device. By providing the radial rod and the downward tip fin, when there is a vapor-liquid two-phase flow in the riser tube, the heat transfer is enhanced, and the vibration of the riser tube is weakened, and the noise level is lowered.

The invention provides a solar system controlled by intelligent communication. The solar system comprises a water heater, a heat reservoir, a total pipe valve and a central controller, wherein the total pipe valve is arranged on a total pipeline at the upstream of the water heater and the heat reservoir; the central controller realizes data connection with the total pipe valve; a hot fluid sensoris arranged in the total pipeline at the upstream of the total pipe valve; the hot fluid sensor is used for detecting whether hot fluid flows through the total pipeline; and the central controller isused for controlling the opening and closing of the total pipe valve of the data detected by the hot fluid sensor. According to the solar system provided by the invention, the opening and closing is intelligently controlled according to the fluid so that the closed loop function is realized between the heat reservoir and the water heater according to actual condition; when no fluid exists, the water heater is heated by utilizing the heat stored by the hot fluid so as to meet the actual work requirements of the water heater, thus solar energy can be fully utilized, and waste of too much heat isprevented.

The invention provides an annular structure separating device shell-and-tube heat exchanger with non-condensable gas. The heat exchanger comprises a shell body, heads are arranged at the two ends of the shell body correspondingly, a tube plate is arranged on the connection position of each head and the shell body, heat exchange tubes are connected with the tube plates at the two ends, and the gaseous phase in two-phase gas-liquid flow is an insoluble or slightly soluble gas, namely the gas does not dissolve in liquid in the heat exchange process; and separating devices are arranged in each heat exchange tube, each separating device comprises a core body and a shell, the cores are arranged in the shells, each shell is fixedly connected with the inner wall of the corresponding heat exchange tube, each core body comprises a plurality of concentric tubes and fins, and the fins connect adjacent concentric tubes. According to the annular structure separating device shell-and-tube heat exchanger with non-condensable gas, a heat exchanger with separating devices with a novel structure is provided, when two-phase gas-liquid flow exists in a pipeline, compared with the background technology, the heat exchanger further enhances heat transfer, weakens vibration of the pipeline and reduces the noise level.

The invention provides a heat pipe which comprises an evaporation header, a condensation header, a rising pipe and a backflow pipe. The rising pipe is communicated with the evaporation header and the condensation header, the evaporation header is located at the lower portion, the condensation header is located at the upper portion, fluid absorbs heat and evaporates in the evaporation header, passes through the rising pipe to enter the condensation header and conducts heat exchange and condensation in the condensation header, and condensation fluid returns to the evaporation header through the backflow pipe; and a current stabilizer is arranged in the rising pipe and comprises a core body and a shell, the core is arranged in the shell, the shell is fixedly connected with the inner wall of the rising pipe, the core is an integrated structure piece extending in the length direction of the shell, and a plurality of through holes are formed in the structure piece. According to the heat pipe with the current stabilizer of the new structure, when vapor-liquid two-phase flow exists in the rising pipe, heat transfer strengthening is achieved; and meanwhile, vibration of the rising pipe is weakened, and the noise level is reduced.

The invention provides a rod-fin type loop heat pipe with varying sizes. The rod-fin type loop heat pipe includes an evaporation header, a condensation header, rising pipes and return pipes, flow stabilizing devices are arranged in the rising pipes, the flow stabilizing devices each include a core body and an outer shell, the core bodies are arranged in the outer shells, the outer shells are connected and fixed to the inner walls of the rising pipes, the core bodies each include a plurality of radial rods extending from the centers of the core bodies to the radial direction, and a plurality offins extending downwards from the radial rods are arranged on each radial rod; and the core bodies each include a core column arranged at the center of each core body, one ends of the radial rods arefixed into the core columns, and from the core columns of the rising pipes to the radial extension direction, the size of the fins on the same radial rods is getting larger and larger. According to the rod-fin type loop heat pipe with the varying sizes, the size of the fins on the rising pipe walls is increased, so that the ability to cut vapor phases and liquid phases near the pipe walls is enhanced. The ability to cut near the pipe walls is focused to be strengthened, and noise reduction and vibration damping can be targeted for specific situations, so that the effects of noise reduction and vibration damping are further achieved, and meanwhile, heat transfer can be further enhanced.

The invention provides an intelligent communication controlled power station boiler waste heat utilization system which comprises an air preheater and a heat reservoir. The system comprises an upstream valve and a downstream valve. The upstream valve is arranged on an upstream flue of the air preheater and the heat reservoir, and the downstream valve is arranged on a downstream flue of the air preheater and the heat reservoir. The system also comprises a central controller which controls on-off of the upstream valve and the downstream valve according to data detected by a flue sensor. According to the system, on-off of the valves is controlled intelligently according to the flue gas flow, so that a closed loop circulating function between the heat reservoir and the air preheater is achieved according to the actual condition. Under the circumstance of no flue gas waste heat, the air preheater is heated by means of heat stored by the flue gas waste heat to meet the actual working demandof the air preheater, so that the flue gas waste heat can be utilized fully, and excessive heat waste is avoided.

The invention provides a gas-liquid two-phase flow multi-tube type shell-tube heat exchanger. The gas-liquid two-phase flow multi-tube type shell-tube heat exchanger comprises a shell. Sealing heads are arranged at the two ends of the shell correspondingly. Tube plates are arranged at the connecting positions of the sealing heads and the shell. Heat exchange tubes are connected with the tube plates at the two ends, and a gas phase in gas-liquid two-phase flow can be condensed into a liquid phase in the heat exchange process. Each heat exchange tube is internally provided with flow stabilizersfor damping and noise lowering. The same heat exchange tube is internally provided with the multiple flow stabilizers. In the flowing direction of fluid in the heat exchange tubes, the distance between the adjacent flow stabilizers is gradually increased. According to the provided gas-liquid two-phase flow multi-tube type shell-tube heat exchanger, through the length changes of the flow stabilizers, when gas-liquid two-phase flow exists in a pipeline, pipeline vibration is weakened to the maximum degree, the noise level is reduced, meanwhile, flowing resistance is reduced, and the heat exchange uniformity is improved.

The invention provides a tubular heat exchanger. The tubular heat exchanger comprises a shell, heat exchange tubes, a tube pass inlet tube, a tube pass outlet tube, a tube pass inlet connecting tube and a tube pass outlet connecting tube. A heat exchange tube bundle formed by the multiple heat exchange tubes which are arranged in parallel is connected to a front tube plate and a rear tube plate. The front end of the front tube plate is connected with a front sealing head. The rear end of the rear tube plate is connected with a rear sealing head. The tube pass inlet tube is arranged on the rearsealing head. The tube pass outlet tube is arranged on the front sealing head. The tube pass inlet connecting tube and the tube pass outlet connecting tube are both arranged on the shell. Fluid of two-phase flow enters through the tube pass inlet tube, carries out heat exchange through the heat exchange tubes, and goes out of the tube pass outlet tube. The fluid in the heat exchange tubes is thegas and liquid two-phase flow in which the gas phase is insoluble or slightly soluble gas, and in other words, the gas will not dissolve in the liquid in the process of heat exchange. The ratio of thelength L of each heat exchange tube to the diameter of the shell of the heat exchanger ranges from 6 to 10. The tubular heat exchanger is a gas and liquid two-phase flow heat exchanger of a novel structure.

The invention provides a power station boiler waste heat utilization system based on fume temperature communication control valve. The system comprises an air preheater and a heat storage device, a fourth temperature sensor is arranged in the flue upstream of an upstream valve, the fourth temperature sensor is used for detecting flue gas temperature in the flue, the fourth temperature sensor is indata connection with a central controller, and the central controller controls opening and closing of the upstream valve and a downstream valve based on the data detected by the fourth temperature sensor. Through the operation, when the flue gas temperature meets the requirement, excess heat can be stored in the heat storage device under the condition that the pre-heat generated by the air preheater meets the amount of air, in the absence of flue gas waste heat, the heat stored by the flue gas waste heat is utilized to heat the air preheater so as to meet the actual working requirements of the air preheater, therefore, the flue gas waste heat can be fully utilized, and the situation of excessive heat waste is avoided.

The invention relates to a loop heat pipe. The loop heat pipe comprises an evaporation part, a condensation part, a heat insulation part connecting the evaporation part and the condensation part, anda backflow part, wherein fluid absorbs heat and evaporates in the evaporation part, enters the condensation part through the heat insulation part, and condenses after heat exchange in the condensationpart, and the condensed fluid returns to an evaporation header through a backflow pipe. The loop heat pipe is characterized in that the evaporation part comprises a heat absorption pipe, the backflowpart comprises a condensation pipe, and the pipe diameter of the heat absorption pipe is larger than that of the condensation pipe. The loop heat pipe with the novel structure mainly increases the resistance of the condensation pipe and reduces the resistance of the evaporation part, so that steam can flow more easily from the evaporation part and the loop heat pipe can better form circulation.

The invention provides a steam heat exchanger capable of evenly distributing flow. The steam heat exchanger comprises an upper collecting box, a lower collecting box and heat exchange pipes arranged between the upper collecting box and the lower collecting box. A heat source in the heat exchange pipe is steam. The heat exchanger comprises an inlet pipe. The inlet pipe is arranged on the lower collecting box. Partition devices are arranged in the heat exchange pipes. Each partition device is of a sheet structure and is composed of square through holes and regular octagonal through holes. The side lengths of the square through holes in the different heat exchange pipes are different, and the longer the distances away from the inlet pipe are, the larger the side lengths of the square throughholes are. By changing the side lengths of the square through holes along with the distances away from the inlet pipe, fluid is made to flow into the heat exchange pipes which are small in flowing resistance and long in distances away from the inlet pipe, and therefore the fluid can be evenly distributed in the heat exchange pipes, the heat exchange efficiency is improved, and the service life isprolonged.

The invention provides a utilization system of power station boiler flue gas waste heat. The utilization system comprises heat pipes, a flue gas passage and an air passage. The heat pipes comprise evaporating ends and condensation ends, wherein the condensation ends are arranged in the air passage; the evaporating ends absorb waste heat of flue gas in a boiler flue and transmit heat to air in theair passage through the condensation ends; and the air after being heated enters a boiler furnace for aid combustion, and stabilizing devices are arranged in the heat pipes. According to the utilization system of the power station boiler flue gas waste heat, a utilization device and method of flue gas waste heat with a novel structure is provided, a heat source is fully used, the energy consumption is reduced, and the flue gas discharging effect is improved.

The invention provides a trough solar heat collection system, which includes a heat collector, the heat collector includes a heat collection tube and a reflector, the heat collection tube absorbs solar energy, and heats the water in the heat collection tube. It is characterized in that the heat collection tube is set A plurality of stabilizing devices, along the flow direction of the fluid in the heat collecting tube, the spacing between the stabilizing devices becomes smaller and smaller. The present invention can maximize the heat exchange effect through the above arrangement.

The invention provides a gas-liquid two-phase flow shell-and-tube heat exchanger, which includes a shell, and the two ends of the shell are respectively provided with heads, and the connection position between the head and the shell is set with a tube plate, and the heat exchange tube Connect the tube sheets at both ends, the vapor phase in the vapor-liquid two-phase flow can condense into a liquid phase during the heat exchange process, and the vapor-liquid two-phase flow flows in the tube side, and a flow stabilization device is installed in the heat exchange tube, and the stabilization The flow device includes a central rod arranged along the central axis of the heat exchange tube and a plurality of radial rods extending radially along the central rod, and a plurality of radial rods are arranged on the radial rods in the direction opposite to the fluid flow Extended fins having tips extending in opposite directions of fluid flow. The invention provides a heat exchanger of a flow stabilizing device with a new structure, which can enhance heat transfer, weaken the vibration of the pipeline and reduce the noise level when there is a vapor-liquid two-phase flow in the pipeline.