CN205317041U - Waste heat exchanger - Google Patents

Abstract

The utility model discloses a waste heat exchanger, the power distribution box comprises a box body, be equipped with many both ends confined phase transition pipes in the box, the intraductal notes of phase transition have liquid heat absorption medium, be equipped with the middle orifice plate with the perpendicular setting of phase transition pipe in the box, middle orifice plate separates the box inner chamber for heat absorption chamber and exothermic chamber, the pipeline section surface that is located the phase transition pipe in endothermic chamber is equipped with the fin admittedly, the cover is equipped with the sleeve pipe on lieing in the pipeline section of the phase transition pipe of exothermic intracavity, the sheathed tube lower part is equipped with the water inlet with heat transfer clearance intercommunication, sheathed tube upper portion is equipped with the delivery port with heat transfer clearance intercommunication. The utility model discloses the waste heat utilization of adaptable medium temperature flue gas and low temperature flue gas, phase transition pipe upper segment set up the sleeve pipe, and the water between sleeve pipe and the phase transition pipe can form circulation circuit with piping, steam pocket, improves waste heat recovery efficiency greatly. The utility model has the advantages of simple and compact structure, easily maintenance and change.

Description

Afterheat heat exchanger

Technical field

The utility model relates to a kind of afterheat heat exchanger.

Background technology

In current society, energy-conservation having become " the 5th energy " after coal, electric power, oil and natural gas, heat loss due to exhaust gas accounts for the 60 ~ 80% of whole thermosteresis, is one maximum in various heat losses. How to reduce funnel temperature, reduce heat loss due to exhaust gas, it is to increase primary energy ratio realizes low-carbon emission, energy-saving and cost-reducing advantageous measures. Fume afterheat utilizes not only can increase substantially primary energy ratio, it is also possible to reduces Air Pollutant Emission amount, is conducive to environmental protection.

Waste heat boiler means those boilers utilizing the waste heat for generating steam in commercial run, and its major equipment is boiler body and drum. At present, in commercial run, many waste heats have been used such as all: the chemical reaction process gas (300 1000 DEG C) etc. of blast furnace furnace gas (about 1500 DEG C), needs cooling. The high-temperature residual heat boiler adapting to this type of is quite ripe, and defines corresponding waste heat boiler series. But as stack gas (about 100 300 DEG C) is not all utilized mostly. Along with the development of industry and the anxiety of energy availability and demand relation, improving constantly of energy prices, these tow taste heats not being taken seriously in the past start to be taken seriously, and utilize it to produce low-pressure steam, high temperature hot water etc. Along with the development of industry and the maximization of shop equipment, the low-temperature waste heat discharge capacity of factory gets more and more, and how this tow taste heat efficiently to utilize the technical barrier becoming current. The steam that the heat reclaimed produces and hot water are not the required thermals source of plant produced, are the bottlenecks that low temperature heat is difficult to promote on a large scale and implement yet.

Summary of the invention

The technical problems to be solved in the utility model be to provide a kind of can utilize in, the afterheat heat exchanger of low-temperature flue gas waste heat.

For solving the problems of the technologies described above, the utility model comprises casing, the phase transition tube of many closed at both ends it is provided with in described casing, liquid heat-absorbing medium it is marked with in phase transition tube, described phase transition tube is by row, row arrangement, often walk to and it is provided with three less, often arrange and also at least it is provided with three, the vertically disposed middle orifice plate with phase transition tube it is provided with in described casing, on middle orifice plate, corresponding every root phase transition tube is provided with perforating, phase transition tube is through perforating, cabinets cavity is divided into the heat-absorbing chamber of bottom and the heat release chamber on top by described middle orifice plate, the corresponding heat-absorbing chamber of described casing has offered gas approach and exhanst gas outlet respectively in its two lateral walls, the pipeline section outside surface of the phase transition tube being positioned at heat-absorbing chamber is fixed with fin, be positioned at heat release chamber phase transition tube pipeline section on be set with sleeve pipe, heat exchange gap is left between described internal surface of casing and phase transition tube outside surface, the water-in that the bottom of described sleeve pipe is provided with heat exchange gap is connected, the water outlet that the top of described sleeve pipe is provided with heat exchange gap is connected.

In described casing, the lower end of corresponding every bar casing tube is provided with water distribution pipe, and the lower end of same bar casing tube is connected by described water distribution pipe;The upper end of corresponding every bar casing tube is provided with and gathers pipe in described casing, described in gather pipe the upper end of same bar casing tube be connected.

The opening end of adjacent two water distribution pipe is oppositely arranged, opening end be arranged on casing with side water distribution pipe respectively be positioned at casing and be connected with the water inlet take-off pipe of side.

The described pipe that gathers is connected with the water outlet take-off pipe being positioned at casing top.

Described casing top and bottom are respectively equipped with the retaining plate for fixing phase transition tube, and on described retaining plate, corresponding phase transition tube has offered perforating, and the two ends of described phase transition tube are fixed on retaining plate respectively.

The upper surface of described middle orifice plate is equipped with thermofin.

Described fin is helical fin.

The outside surface of the outside surface and fin that are positioned at the pipeline section of the phase transition tube of heat-absorbing chamber is respectively equipped with enamel layer.

Described phase transition tube is made up of weldless steel tube.

Described heat-absorbing medium is pure water.

After adopting said structure, the utility model adopts the phase transition tube of heat exchange better effects if, the UTILIZATION OF VESIDUAL HEAT IN of temperature flue gas and low-temperature flue gas in can adapting to, and on phase transition tube, section arranges sleeve pipe, water between sleeve pipe and phase transition tube can form circulation loop with piping, drum, greatly improves waste heat recovery efficiency. The lower end of phase transition tube arranges fin and arranges enamel layer at the outside surface of fin and phase transition tube, has both added heat exchange effect, flue gas low-temperature also can be avoided to corrode. The utility model structure is simple, compact, is easy to maintenance and changes.

Accompanying drawing explanation

Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail:

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation that Fig. 1 analyses and observe along line D-D;

Fig. 3 is the structural representation that Fig. 1 analyses and observe along line B-B;

Fig. 4 is the structural representation that Fig. 1 right side is looked;

Fig. 5 is the structural representation that the utility model is connected with drum.

Embodiment

As shown in Figures 1 to 4, afterheat heat exchanger comprises casing 1, the phase transition tube 2 being provided with many closed at both ends in casing 1 and vertically arrange, casing 1 top and bottom are respectively equipped with the retaining plate 9 for fixing phase transition tube 2, on retaining plate 9, corresponding phase transition tube 2 has offered perforating, and the two ends of phase transition tube 2 are fixed on retaining plate 9 respectively. phase transition tube 2 is the weldless steel tube that plain carbon stool or stainless steel are made, and is marked with liquid heat-absorbing medium in phase transition tube 2, and in the present embodiment, heat-absorbing medium is carry out vacuumizing process in pure water and phase transition tube 2. phase transition tube 2 is by row, row arrangement, often walk to and it is provided with three less, often arrange and also at least it is provided with three, the vertically disposed middle orifice plate 3 with phase transition tube 2 it is provided with in casing 1, on middle orifice plate 3, corresponding every root phase transition tube 2 is provided with perforating, phase transition tube 2 is through perforating, casing 1 inner chamber is divided into the heat-absorbing chamber of bottom and the heat release chamber on top by middle orifice plate 3, middle orifice plate 3 top in casing 1 arranges and makes the height of heat-absorbing chamber be greater than the height in heat release chamber, improve the heat exchange efficiency of flue gas, the upper surface of middle orifice plate 3 is equipped with thermofin 10, the corresponding heat-absorbing chamber of casing 1 has offered gas approach 12 and exhanst gas outlet 13 respectively in its two lateral walls, gas approach and exhanst gas outlet are oppositely arranged, the pipeline section outside surface being arranged in the phase transition tube 2 of heat-absorbing chamber is fixed with fin 4(and illustrates fin and only do to illustrate, its pipeline section being positioned at heat-absorbing chamber all arranges fin from top to bottom), fin 4 is helical fin, and it is positioned at the outside surface of pipeline section of the phase transition tube 2 of heat-absorbing chamber and the outside surface of fin is respectively equipped with enamel layer.Be positioned at heat release chamber phase transition tube 2 pipeline section on be set with sleeve pipe 5, heat exchange gap is left between sleeve pipe 5 internal surface and phase transition tube 2 outside surface, the water-in that the bottom of sleeve pipe 5 is provided with heat exchange gap is connected, the water outlet that the top of sleeve pipe 5 is provided with heat exchange gap is connected.

In casing 1, the lower end of corresponding every bar casing tube 5 is provided with water distribution pipe 6, the lower end of same bar casing tube 5 is connected by water distribution pipe 6, the opening end of adjacent two water distribution pipe 6 is oppositely arranged, opening end be arranged on casing 1 with side water distribution pipe 6 respectively be positioned at casing 1 and be connected with the water inlet take-off pipe 7 of side; In casing, the upper end of corresponding every bar casing tube is provided with and gathers pipe 8, gathers pipe 8 and is connected the upper end of same bar casing tube, gathers pipe 8 and be connected with the water outlet take-off pipe 14 being positioned at casing 1 top. Water distribution pipe 6 is led to into treating the water that the temperature of heat exchange is lower in heat exchange gap, gather after water higher for temperature is gathered by pipe 8 and flow into other devices, the opening end of adjacent water distribution pipe 6 is oppositely arranged, the heat exchange efficiency of water can be improved, prevent the flow velocity because of water from slowing down and cause heat exchange efficiency height another side heat exchange efficiency in side in casing 1 heat release chamber low.

In the utility model, flue gas enters heat-absorbing chamber and is washed away the bottom of phase transition tube 2, phase transition tube 2 absorbs heat, then phase transition tube 2 is positioned at the pipeline section heat release in heat release chamber, water in heating heat exchange gap, as shown in Figure 5, it may also be useful to time, water outlet take-off pipe can be connected with the upper lower header of boiler, upper lower header is connected to drum 11 by piping again and forms loop, and final production goes out satisfactory steam or hot water.

The utility model adopts the phase transition tube 2 of heat exchange better effects if, the UTILIZATION OF VESIDUAL HEAT IN of temperature flue gas and low-temperature flue gas in can adapting to, on phase transition tube 2, section arranges sleeve pipe 5, and the water between sleeve pipe 5 and phase transition tube 2 can form circulation loop with piping, drum, greatly improves waste heat recovery efficiency. The lower end of phase transition tube 2 arranges fin and arranges enamel layer at the outside surface of fin and phase transition tube 2, both adds heat exchange effect, and flue gas low-temperature also can be avoided to corrode. The utility model structure is simple, compact, is easy to maintenance and changes. The utility model can produce in high-temperature steam, it is possible to produce warm water or combinationally use, high energy-consuming industry can be widely used in, such as industries such as electric power, oil, chemical industry, smeltings, reach the object of energy-saving and emission-reduction and environment protection.

The foregoing is only preferred embodiment of the present utility model, it is not limited to the utility model. The utility model has been described in detail by previous embodiment, and for a person skilled in the art, the technical scheme described in foregoing embodiments still can be modified by it, or wherein part technology feature carries out equivalent replacement. In every case, within invention design scope of the present utility model, any amendment of making, equivalent replacement, improvement etc., be all included within protection domain of the present utility model.

Claims (10)

1. an afterheat heat exchanger, it is characterized in that it comprises casing (1), the phase transition tube (2) of many closed at both ends it is provided with in described casing (1), phase transition tube is marked with liquid heat-absorbing medium in (2), described phase transition tube (2) is by row, row arrangement, often walk to and it is provided with three less, often arrange and also at least it is provided with three, the vertically disposed middle orifice plate (3) with phase transition tube (2) it is provided with in described casing (1), the upper corresponding every root phase transition tube (2) of middle orifice plate (3) is provided with perforating, phase transition tube (2) is through perforating, casing (1) inner chamber is divided into the heat-absorbing chamber of bottom and the heat release chamber on top by described middle orifice plate (3), the corresponding heat-absorbing chamber of described casing (1) has offered gas approach and exhanst gas outlet respectively in its two lateral walls, the pipeline section outside surface of the phase transition tube (2) being positioned at heat-absorbing chamber is fixed with fin (4), be positioned at heat release chamber phase transition tube (2) pipeline section on be set with sleeve pipe (5), heat exchange gap is left between described sleeve pipe (5) internal surface and phase transition tube (2) outside surface, the water-in that bottom is provided with heat exchange gap is connected of described sleeve pipe (5), the water outlet that top is provided with heat exchange gap is connected of described sleeve pipe (5).

2. afterheat heat exchanger according to claim 1, is characterized in that the lower end of corresponding every bar casing tube (5) in described casing (1) is provided with water distribution pipe (6), and the lower end of same bar casing tube (5) is connected by described water distribution pipe (6); The upper end of corresponding every bar casing tube (5) is provided with and gathers pipe (8) in described casing (1), described in gather pipe (8) upper end of same bar casing tube (5) be connected.

3. afterheat heat exchanger according to claim 2, is characterized in that the opening end of adjacent two water distribution pipe (6) is oppositely arranged, opening end be arranged on casing (1) with side water distribution pipe (6) respectively be positioned at casing and be connected with the water inlet take-off pipe (7) of side.

4. afterheat heat exchanger according to claim 2, gathers pipe (8) and is connected with the water outlet take-off pipe being positioned at casing top described in it is characterized in that.

5. afterheat heat exchanger according to claim 1, it is characterized in that described casing top and bottom are respectively equipped with the retaining plate for fixing phase transition tube (2) (9), the upper corresponding phase transition tube (2) of described retaining plate (9) has offered perforating, and the two ends of described phase transition tube (2) are fixed on retaining plate (9) respectively.

6. afterheat heat exchanger according to claim 1, is characterized in that the upper surface of described middle orifice plate (3) is equipped with thermofin (10).

7. afterheat heat exchanger according to any one of claim 1 to 6, is characterized in that described fin is helical fin.

8. afterheat heat exchanger according to claim 7, the outside surface of pipeline section and the outside surface of fin that it is characterized in that being positioned at the phase transition tube (2) of heat-absorbing chamber are respectively equipped with enamel layer.

9. afterheat heat exchanger according to claim 1, is characterized in that described phase transition tube (2) is made up of weldless steel tube.

10. afterheat heat exchanger according to claim 1, is characterized in that described heat-absorbing medium is pure water.