33results about How to "Play a role in stabilizing the flow" patented technology

The invention provides a tube-shell heat exchanger. The tube-shell heat exchanger comprises a housing, wherein sealing heads are arranged at two ends of the housing; tube plates are arranged at positions where the sealing heads are connected to the housing; heat exchange tubes are connected to the tube plates at two ends; gas phase in gas-liquid two-phase current is insoluble or slightly-soluble gas, namely, gas cannot dissolve in liquid in the heat exchanging process. The tube-shell heat exchanger is characterized in that current stabilizers for absorbing vibration and reducing noise are arranged in the heat exchange tubes; a plurality of current stabilizers are arranged in one heat exchange tube; the spacing between adjacent current stabilizers gradually increases in the flowing direction of the liquid in the heat exchange tubes until reaching some position, and then the spacing between the adjacent current stabilizers gradually decreases from the some position. According to the heatexchanger, the vibration of pipelines can be minimized based on the spacing change of the current stabilizers while the pipelines are subjected to gas-liquid two-phase flowing, and moreover, the noise level is decreased, and meanwhile, the flowing resistance is reduced.

The invention provides a gas-liquid two-phase flow multitube type tubular heat exchanger. The gas-liquid two-phase flow multitube type tubular heat exchanger comprises a shell. The two ends of the shell are each provided with an end enclosure. The connection position of each end enclosure and the shell is provided with a tube plate. Each heat exchange tube is connected with the tube plates at thetwo ends. A gas phase in gas-liquid two-phase flow is insoluble or indissolvable gas, and in other words, in the heat exchange process, the gas is not dissolved into liquid. The gas-liquid two-phase flow multitube type tubular heat exchanger is characterized in that the heat exchange tubes are internally provided with the flow stabilizing devices used for absorbing shock and reducing noise; each heat exchange tube is internally provided with the multiple flow stabilizing devices; and the lengths of the flow stabilizing devices are reduced to a certain position gradually in the flowing direction of fluid inside the heat exchange tubes in the first place, and then the lengths of the flow stabilizing devices are gradually increased from the certain position. According to the gas-liquid two-phase flow multitube type tubular heat exchanger, the lengths of the flow stabilizing devices are variable; when the gas-liquid two-phase flow exists in a pipe, vibration of the pipe is weakened to a greatest extent, and the noise level is lowered; and meanwhile, flow resistance is reduced.

The invention provides a steam heat exchanger. The steam heat exchanger comprises a header and a steam pipe; steady flow devices are arranged inside the steam pipe and are each of a sheet structure; the sheet structures are arranged on the cross section of the steam pipe; the steady flow devices are composed of square through holes and right octagon through holes; the length of each side of the square through holes is equal to the length of each side of the right octagon through holes; the four sides of each square through hole are the sides of four different right octagon through holes; and the four spaced sides of each right octagon through hole are the sides of four different square through holes. Compared with a steady flow device in the prior art, the steam heat exchanger with the steady flow structures further improves the steady flow effect, enhances heat transfer and is easy to manufacture.

The invention provides a design method for a steam boiler. The steam boiler comprises an upper boiler cylinder, a lower boiler cylinder, an ascending pipe and a descending pipe, wherein the ascending pipe and the descending pipe are connected between the upper boiler cylinder and the lower boiler cylinder, and flow stabilizing devices are arranged in the ascending pipe. The design method comprises the following step that along with the increase of the pipe diameter of the ascending pipe, the distance between the adjacent flow stabilizing devices is continuously reduced. According to the provided design method for the steam boiler with the flow stabilizing devices with novel structures, the boiler which is designed by using the method has the advantages that when the steam and liquid two phases flow in the ascending pipe, the heat transfer is enhanced, meanwhile, the vibration of the ascending pipe is weakened, and the noise level is reduced.

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 provides a heat exchanger system provided with a plurality of two-phase flow stabilizing devices and a pipeline of the heat exchanger system. The two-phase flow stabilizing devices are arranged in the pipeline; each of the two-phase flow stabilizing devices comprises a core body; the core body can divide two phase flow runners in the pipeline into a plurality of small runners; and the two-phase flow stabilizing devices are continuously arranged or arranged at intervals. According to the invention, the two-phase flow stabilizing devices are continuously arranged or arranged at intervals, so that the liquid phase and the gaseous phase can be separated through a plurality of stages and steps, heat transfer can be further enhanced, and the effects of vibration and noise reduction are realized.

The invention provides a vapor heat exchanger. The vapor heat exchanger comprises a collecting box and steam tubes, wherein the steam tubes upwards extend from the collecting box; a steam inlet and acondensed water outlet are formed in the collecting box; steam enters the collecting box, and upwards flows from the collecting box to enter the steam tubes; the steam tubes perform heat exchange withoutside to form condensed water; condensed water returns into the collecting box under action of the gravity, and flows out from a water return hole in the lower part of the collecting box; a communication tube is arranged between at least two adjacent steam tubes of the multiple steam tubes; multiple communication tubes are arranged between adjacent steam tubes from the lower parts of the steamtubes to the upper parts of the steam tubes; and the diameters of the communication tubes are continuously increased from the lower parts of the steam tubes to the upper parts of the steam tubes. Along with upward flow of fluid, fluid continuously releases heat, and released heat in different heat collecting tubes becomes more and more uniform, and therefore, pressure balance can be guaranteed tobe reached as quickly as possible in a fluid flowing process.

The invention provides a steam heat exchanger. The steam heat exchanger comprises a collecting box and steam pipes, the steam pipes extends upwards from the collecting box, the collecting box is provided with a steam inlet and a condensed water outlet, the steam enters the collecting box, then flows upwards from the collecting box and enters the steam pipes, the steam pipes and the outside are subjected to heat exchange to form condensed water, the condensed water returns to the collecting box under the action of gravity, and then flows out from a water returning opening in the lower part of the collecting box; a plurality of steam pipes are arranged, a communicating pipe is arranged between at least two adjacent steam pipes, a plurality of communicating pipes are arranged between the adjacent steam pipes from the lower parts of the steam pipes to the upper parts of the steam pipes, and the distance between the adjacent communicating pipes is continuously reduced from the lower parts of the steam pipes to the upper parts of the steam pipes. Due to the fact that along with flowing upward of the fluid, the fluid continuously releases heat, along with continuously heat releasing of the fluid, heat releasing in different heat collecting pipes gets more and more ununiformly, by virtue of above arrangement, the pressure balance can be achieved as soon as possible in the fluid flowingprocess.

The invention provides a designing method of a steam boiler and provides a designing method for a steam boiler with a flow stabilizing device of a novel structure. The steam boiler comprises an upperboiler barrel, a lower boiler barrel, an ascending pipe and a descending pipe, wherein the ascending pipe and the descending pipe are connected between the upper boiler barrel and the lower boiler barrel. The steam boiler is characterized in that the pipe diameter of the ascending pipe is larger than that of the descending pipe. By arranging the pipe diameter of the ascending pipe to be greater than that of the descending pipe, resistance of the descending pipe is mainly increased, the resistance of the ascending pipe is reduced, steam flows in an evaporation portion more easily, and a hoop pipeline better forms circulation.

The invention provides a circulatory spraying heat exchange system. The circulatory spraying heat exchange system comprises a tank; a circulatory spray pump, a spray nozzle and a circulating pipe arearranged inside the tank, and the spray nozzle is arranged on the upper portion of an evaporator; the circulatory spray pump can pump seawater into the spray nozzle, and then the spray nozzle sprays the seawater onto the evaporator. The circulatory spraying heat exchange system can absorb heat of the evaporator through the unevaporated seawater to achieve conversion from seawater to fresh water tothe maximum degree, thereby maximizing utilization effects.