CN202814162U

CN202814162U - Frustum-shaped heat exchanger

Info

Publication number: CN202814162U
Application number: CN 201220429530
Authority: CN
Inventors: 薛黎明; 刘伯昂
Original assignee: Rayspower New Energy Co Ltd
Current assignee: Rayspower Energy Group Co Ltd
Priority date: 2012-08-28
Filing date: 2012-08-28
Publication date: 2013-03-20
Anticipated expiration: 2022-08-28

Abstract

The utility model discloses a frustum-shaped heat exchanger. The frustum-shaped heat exchanger comprises a cavity frustum body with a frustum appearance and a heating pipe conveying high-temperature melt. The heating pipe is fixedly arranged in a cavity of the cavity frustum body. The diameter of the cavity frustum body gradually increases from top to bottom, so the size of the cavity of the cavity frustum body gradually increases from an upper portion high-temperature heat exchanging area to a lower portion low-temperature heat exchanging area. The frustum-shaped heat exchanger is designed according to heat dissipation characteristics of the cavity frustum body and geometric space, changes of the space sizes are effectively used, the size of the high-temperature area is decreased, heat exchanging efficiency is improved to a certain extent, heat dissipation loss of the high-temperature area is reduced, the original output temperature of heated hot melt is improved, and the purpose of improving efficiency of a whole power generation system is achieved.

Description

A kind of taper type heat exchanger

Technical field

The utility model relates to a kind of heat-exchange device, especially a kind of taper type heat exchanger.

Background technology

Existing heat exchanger is with the equipment of the part heat transferred cold fluid of hot fluid, claims again heat exchanger.Heat exchanger is the common apparatus of chemical industry, oil, power, food and other many industrial departments; Especially in the thermal cycle exchange of heat energy power-generating, occupy critical role, directly have influence on the gross efficiency of generating and the production capacity of electric power.In addition, heat exchanger can be used as heater, evaporimeter and reboiler etc. in the use procedure of heat generating steam turbine, uses more extensive.

The heat exchanger kind is a lot, but basically can divide three major types namely according to principle and the mode of cold and hot fluid exchange heat: dividing wall type, hybrid and heat accumulating type.In three class heat exchangers, dividing wall type heat exchanger is used at most.The profile of dividing wall type heat exchanger is generally rectangular box-shaped or cylindrical, internal efficiency when heat exchange also has certain room for promotion, by improving the container profile of heat exchanger, increase thermograde and improve the outlet temperature that is heated solute, thereby improve the efficient of heat exchange heating.Generally for columniform heat exchanger: when it erect use, because its internal temperature is directly proportional with heat loss with the size of ambient temperature differences and cooling surface area, top was large with respect to the high heat dissipation capacity of temperature of lower; If want to reduce the heat loss that total heat loss just must reduce temperature end, because columniform geometrical feature causes surface area approximately equal up and down, cause its high-temperature portion heat to run off much larger than low-temp. portion, wanted to reduce the surface area that heat loss must be dwindled high-temperature portion.How to reach the raising heat exchanger effectiveness and take into account simultaneously hot loose the loss into the break-through point of dealing with problems of minimizing.

The utility model content

For the problem that prior art exists, the purpose of this utility model is to provide a kind of and has higher rate of heat exchange, and the few taper type heat exchanger of self-radiating loss.

For achieving the above object, a kind of taper type heat exchanger of the utility model, the cavity cone table and the heating tube that transports high temperature melting matter that comprise the frustum external form, heating tube is fixedly installed in the cavity of cavity cone table, wherein, the diameter of cavity cone table increases from top to bottom gradually, so that the volume of the high temperature exchange area, top of cavity cone table inner chamber to Low Temperature Thermal exchange area, bottom increases gradually.

Further, described cavity cone table is that the compound system of trilaminate material forms, and skin is protective layer, and the intermediate layer is heat-insulation layer, and internal layer is heat-reflecting layer, and the top of described cavity cone table is set to the taper end section of frustum.

Further, the material of described protective layer is for having protection against the tide, anticollision, aging-resistant macromolecule or metal material; The material of heat-insulation layer is the composite with insulation and thermal-insulation function; The material of heat-reflecting layer is for having adiabatic and heat-reflecting metal or nonmetallic materials.

Further, described heating tube is conical helical coil pipe, and its material is the metal heat-conducting material, and the coiling radius upper end of taper helical coil pipe is little, the lower end is large, and its upper and lower end lays respectively at the endoceliac top of described cavity frustum, bottom.

Further, be provided with on the described cavity cone table for the interface arrangement inside and outside the molten matter discrepancy of the control high and low temperature cavity cone table, this interface arrangement comprise four can controlled switching interface, be respectively the hot entrance in the top that is arranged at described cavity cone table and cold outlet, be arranged at heat outlet and the cold entrance of cavity cone table bottom.

Further, the top of described cavity cone table is provided with the low temperature efferent duct, and the centre, top is provided with the shower nozzle interface in the chamber, and the shower nozzle interface is interconnected by the low temperature efferent duct of described cold outlet and outside, chamber.

Further, the bottom of described cavity cone table is provided with the low temperature input pipe, the chamber lower edge be provided with cold spout along tangent line water conservancy diversion direction, cold spout is interconnected by described cold entrance and low temperature input pipe.

Further, the upper end of described heating tube is communicated with the high temperature input pipe, and this high temperature input pipe is interconnected by the upper end of described hot entrance and heating tube.

Further, the lower end of described heating tube is communicated with the high temperature efferent duct, and this high temperature efferent duct is interconnected by the lower end of described heat outlet with heating tube

Further, the manufactured materials of described interface arrangement is refractory metal or nonmetallic materials, is chosen as polytetrafluoroethylene (PTFE) class material.

The utility model designs according to frustum cavity body and geometric space heat dissipation characteristics thereof, effectively utilize the size variation of its spatial volume, the high-temperature region volume is reduced, can improve to a certain extent heat exchanger effectiveness and reduce the heat radiation loss of high-temperature region, thereby improve the original output temperature that is heated hot melt matter, reach the purpose that improves whole heat generating system efficient.

Description of drawings

Fig. 1 is the structural section schematic diagram of wall type heat exchanger in the middle of the prior art;

Fig. 2 is the utility model device overall structure schematic cross-section;

Fig. 3 is A section enlarged drawing among Fig. 2.

The specific embodiment

Below, with reference to the accompanying drawings, the utility model is more fully illustrated, shown in the drawings of exemplary embodiment of the present utility model.Yet the utility model can be presented as multiple multi-form, and should not be construed as the exemplary embodiment that is confined to narrate here.But, these embodiment are provided, thereby make the utility model comprehensively with complete, and scope of the present utility model is fully conveyed to those of ordinary skill in the art.

In order to be easy to explanation, here can use such as " on ", the space relative terms such as D score " left side " " right side ", be used for element shown in the key diagram or feature with respect to the relation of another element or feature.It should be understood that except the orientation shown in the figure spatial terminology is intended to comprise the different azimuth of device in using or operating.For example, if the device among the figure is squeezed, be stated as the element that is positioned at other elements or feature D score will be positioned at other elements or feature " on ".Therefore, the exemplary term D score can comprise upper and lower orientation both.Device can otherwise be located (90-degree rotation or be positioned at other orientation), and the relative explanation in used space here can correspondingly be explained.

Such as Fig. 2, shown in Figure 3, a kind of taper type heat exchanger of the utility model, comprise the frustum profile of main part cavity cone table 1, transport the heating tube 2 of high temperature melting matter and be used for the interface arrangement of connecting line, wherein, the diameter of cavity cone table 1 increases from top to bottom gradually, so that the volume of the high temperature exchange area, top of cavity cone table 1 inner chamber to Low Temperature Thermal exchange area, bottom increases gradually.Heating tube 2 is fixedly installed in the cavity of cavity cone table 1, heating tube 2 is conical helical coil pipe, its material is the metal heat-conducting material, and the coiling radius upper end of taper helical coil pipe is little, the lower end is large, and its upper and lower end lays respectively at top, the bottom in cavity cone table 1 chamber.

Interface arrangement is used for inside and outside the molten matter discrepancy of the control high and low temperature cavity cone table, this interface arrangement comprise four can controlled switching interface, be respectively and be arranged at the hot entrance 3 in cavity cone table 1 top and cold outlet 6, be arranged at heat outlet 5 and the cold entrance 4 of cavity cone table 1 bottom.The manufactured materials of interface arrangement is refractory metal or nonmetallic materials, may be selected to be polytetrafluoroethylene (PTFE) class material.

The top of cavity cone table 1 is provided with low temperature efferent duct 10, the bottom is provided with low temperature input pipe 9, and the upper end of heating tube 2 is communicated with high temperature input pipe 7, and the lower end of heating tube 2 is communicated with high temperature efferent duct 8.Wherein, high temperature input pipe 7 is interconnected by the upper end of hot entrance 3 with heating tube 2; The centre, top is provided with shower nozzle interface 14 in the chamber, and shower nozzle interface 14 is interconnected by the low temperature efferent duct 10 of cold outlet 6 with the outside, chamber; High temperature efferent duct 8 is interconnected by the lower end of heat outlet 5 with heating tube 2; The chamber lower edge be provided with cold spout 15 along tangent line water conservancy diversion direction, cold spout 15 is interconnected by cold entrance 4 and low temperature input pipe 9.

Cavity cone table 1 forms for the compound system of trilaminate material, and skin is protective layer 11, and the intermediate layer is heat-insulation layer 12, and internal layer is heat-reflecting layer 13, and the top of cavity cone table 1 is set to the taper end section of frustum.Wherein, the material of protective layer is for having protection against the tide, anticollision, aging-resistant macromolecule or metal material; The material of heat-insulation layer is the composite with insulation and thermal-insulation function; The material of heat-reflecting layer is for having adiabatic and heat-reflecting metal or nonmetallic materials.

During work, hot entrance 3, cold entrance 4, heat outlet 5, controlled the opening of cold outlet 6 four-holes, the molten matter of low temperature flow through successively low temperature input pipe 9, cold entrance 4, cold spout 15, flow out in the chamber that enters cavity cone table 1 with tangential direction afterwards and also from bottom to top it is filled with, then again successively in the chamber shower nozzle interface 14 in centre, top, cold outlet 6 and low temperature efferent duct 10 flow to outsidely, the molten matter flow direction of low temperature is with filled arrows 17 expressions; Meanwhile, successively flow through high temperature input pipe 7, hot entrance 3 of high temperature solute enters heating tube 2 upper ends in cavity cone table 1 chamber, flow to its lower end by whole piece heating tube 2, flow to the outside through heat outlet 5, high temperature efferent duct 8 more subsequently, high temperature melting matter flow direction is with hollow arrow 16 expressions; In above process, the tube wall of the molten matter of high and low temperature by heating tube 2 carries out the heat exchange under the poor condition of different temperatures from bottom to top, so that the low temperature solute heats up and flows to outsidely, and provides thermal source to participate in hot power generation process.

Comparative illustration: as shown in Figure 1, 2, heat exchange chamber 19 of the present utility model and heating tube 2 and the heat exchange chamber 21 of ordinary hot switch and the heat exchange zone volume size that heating tube 22 difference in shape is high and low temperature.The high temperature heat exchange area on the heat exchange chamber top of taper type is little than the Low Temperature Thermal exchange volume of bottom, radiation loss is also little, and the radius of curvature of heating tube 2 is little simultaneously, is easy to heat accumulation and high temperature heat exchange; Common cylindricality heat exchange chamber 21 and heating tube 22, the regional space size of its top 25, bottom 26 is the same, and the high and low temperature heat exchange does not have additional space to change and thermograde is complementary, so efficient is relatively not high.

Claims

1. taper type heat exchanger, it is characterized in that, this heat exchanger comprises the cavity cone table of frustum external form and transports the heating tube of high temperature melting matter, heating tube is fixedly installed in the cavity of cavity cone table, wherein, the diameter of cavity cone table increases from top to bottom gradually, so that the volume of the high temperature exchange area, top of cavity cone table inner chamber to Low Temperature Thermal exchange area, bottom increases gradually.

2. taper type heat exchanger as claimed in claim 1 is characterized in that, described cavity cone table is that the compound system of trilaminate material forms; skin is protective layer; the intermediate layer is heat-insulation layer, and internal layer is heat-reflecting layer, and the top of described cavity cone table is set to the taper end section of frustum.

3. taper type heat exchanger as claimed in claim 2 is characterized in that, the material of described protective layer is for having protection against the tide, anticollision, aging-resistant macromolecule or metal material; The material of heat-insulation layer is the composite with insulation and thermal-insulation function; The material of heat-reflecting layer is for having adiabatic and heat-reflecting metal or nonmetallic materials.

4. taper type heat exchanger as claimed in claim 1, it is characterized in that, described heating tube is conical helical coil pipe, its material is the metal heat-conducting material, the coiling radius upper end of taper helical coil pipe is little, the lower end is large, and its upper and lower end lays respectively at the endoceliac top of described cavity frustum, bottom.

5. taper type heat exchanger as claimed in claim 1, it is characterized in that, be provided with on the described cavity cone table for the interface arrangement inside and outside the molten matter discrepancy of the control high and low temperature cavity cone table, this interface arrangement comprise four can controlled switching interface, be respectively the hot entrance and the cold outlet that are arranged at described cavity cone table top, be arranged at heat outlet and the cold entrance of cavity cone table bottom.

6. taper type heat exchanger as claimed in claim 5, it is characterized in that, the top of described cavity cone table is provided with the low temperature efferent duct, and the centre, top is provided with the shower nozzle interface in the chamber, and the shower nozzle interface is interconnected by the low temperature efferent duct of described cold outlet and outside, chamber.

7. taper type heat exchanger as claimed in claim 5, it is characterized in that, the bottom of described cavity cone table is provided with the low temperature input pipe, the chamber lower edge be provided with cold spout along tangent line water conservancy diversion direction, cold spout is interconnected by described cold entrance and low temperature input pipe.

8. taper type heat exchanger as claimed in claim 5 is characterized in that, the upper end of described heating tube is communicated with the high temperature input pipe, and this high temperature input pipe is interconnected by the upper end of described hot entrance and heating tube.

9. taper type heat exchanger as claimed in claim 5 is characterized in that, the lower end of described heating tube is communicated with the high temperature efferent duct, and this high temperature efferent duct is interconnected by the lower end of described heat outlet with heating tube.

10. taper type heat exchanger as claimed in claim 5 is characterized in that, the manufactured materials of described interface arrangement is refractory metal or nonmetallic materials, is chosen as polytetrafluoroethylene (PTFE) class material.