CN201476624U

CN201476624U - Steam heat exchange device

Info

Publication number: CN201476624U
Application number: CN2009202311211U
Authority: CN
Inventors: 马建南
Original assignee: CHANG ZHOU BAOYU INDUSTRIAL EQUIPMENT Co Ltd
Current assignee: CHANG ZHOU BAOYU INDUSTRIAL EQUIPMENT Co Ltd
Priority date: 2009-09-03
Filing date: 2009-09-03
Publication date: 2010-05-19
Anticipated expiration: 2019-09-03

Abstract

The utility model relates to a heat exchange device, in particular to a steam heat exchange device for preheating air entering a garbage incinerator. The steam heat exchange device is a rectangular box body. An air inlet and an air outlet are arranged on the box body. Straight heat exchange tubes are arranged in the box body. A steam inlet pipe and a steam outlet pipe are arranged at the upper part and the lower part of the external side of the box body. The steam inlet pipe is communicated with two rows of staggered horizontally-arranged transverse pipes with distribution function. Each transverse pipe is communicated with a row of vertical pipes with heat exchange function. The vertical pipes are perpendicular to the transverse pipes. Steam in each row of vertical pipes downward flows into a corresponding transverse pipe. Steam in the lower row of transverse pipes finally converges and flows into the steam output pipe. The vertical pipes are arranged in an array. The utility model has the advantages that environmental pollution, low temperature corrosion and ash blockage caused by smoke leakage are avoided because clean energy is used, and the service life of the device is greatly prolonged; and the heat loss caused by radiation is small, the heat dispersion efficiency is high, the steam passing resistance is small and the like.

Description

A kind of steam heat exchanger

Technical field

The utility model relates to a kind of heat exchanger, enters a kind of steam heat exchanger of waste incineration furnace air in particular for preheating.

Background technology

In the incineration treatment of garbage process, for waste of low heating value is better burnt, guarantee that the combustion air that enters the incinerator burner hearth remains on stable temperature, combustion air must be through after the air preheater heating, just can send into incinerator.

Existing air preheat method adopts fume afterheat, contains steam and sulfuric acid vapor in the flue gas, and condition of work is more abominable, occurs cold end corrosion and stifled ash easily.In case cold end corrosion and stifled ash take place, will cause exhaust gases passes to stop up, the air inducing resistance increases, boiler positive pressuring combustion, this has not only reduced boiler output, even causes and be forced to blowing out.The result of corrosion can cause the air preheater pipe to reveal and damage, and causes seriously and leaks out, and causes that combustion conditions worsens, and the heating surface of having to often change when serious had both increased maintenance load and spillage of material, had influenced the normal operation of boiler again.Cold air enters fume side, also can reduce the cigarette temperature, quickens the speed of cold end corrosion and stifled ash, thereby influences the safe operation of boiler, reduces service life of equipment greatly, and flue gas is revealed also can cause environmental pollution.

The utility model content

Technical problem to be solved in the utility model is: provide a kind of steam heat exchanger, to solve short, technical problem such as the heat exchange effect is low in original preheater service life.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of steam type airheater, its structure is a rectangular box, casing is provided with air inlet and air outlet, be provided with the straight pipe type heat exchanger tube in the casing, heat exchanger tube comprises transverse tube and vertical tube, casing outside upper and lower settings has steam inlet pipe and steam outlet pipe, this advances, the effect of steam outlet pipe is similar to the collection case, be communicated with the transverse tube of horizontally disposed shunting action of two rows of mutually staggered on the described steam inlet pipe, be communicated with a vertical tube that queues the heat exchange effect on every transverse tube, vertical tube is vertical with transverse tube, every row's vertical tube flows to corresponding lower transverse tubule downwards, the following horizontal row pipe turnover steam pipe that confluxes at last, described vertical tube are that matrix form is arranged.

In order to prevent the shake in the heat exchanger course of work, further: band steel support fixation heat exchanger tube is set in the casing of preheater.

For the water that steam cooling back is formed can better flow out, further: form certain angle between steam outlet pipe and the horizontal plane, angular range is 1-5 °.

For air is distributed fast, reach the effect of uniform heat exchange, further: the air inlet place in casing is provided with the deflector that air is distributed fast.

The beneficial effects of the utility model: owing to using clean energy resource to avoid being revealed the pollution of environment and the generation of cold end corrosion and stifled ash by flue gas, service life of equipment prolongs greatly; It is little that the utility model also has radiation loss, thermal efficiency height, advantage such as the current resistance of steam is little.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is a main TV structure schematic diagram of the present utility model;

Fig. 2 is a plan structure schematic diagram of the present utility model;

Wherein: 1, casing, 2, air inlet, 3, air outlet, 4, steam inlet pipe, 5, steam outlet pipe, 6, transverse tube, 7, vertical tube, 8, deflector.

The specific embodiment

With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

As Figure 1-3, a kind of steam type airheater, its structure is a rectangular box 1, casing 1 is provided with air inlet 2 and air outlet 3, be provided with the straight pipe type heat exchanger tube in the casing 1, heat exchanger tube comprises transverse tube 6 and vertical tube 7, casing 1 outside is respectively arranged with steam inlet pipe 4 and steam outlet pipe 5 up and down, this advances, the effect of steam outlet pipe is similar to the collection case, is communicated with the transverse tube 6 of horizontally disposed shunting action of two rows of mutually staggered on the described steam inlet pipe 4, is communicated with a vertical tube 7 that queues shunting action on every transverse tube 6, vertical tube 6 vertical with transverse tube 7, every row's vertical tube 7 flows to corresponding lower transverse tubule 6 downwards, and following horizontal row pipe 6 confluxes at last and passes in and out steam pipe 5, and described vertical tube 7 is that matrix form is arranged.

The purpose that two horizontal row pipes 6 are set is in order to reduce the volume of casing 1 under the situation that guarantees the preheater result of use, prevent that casing 1 from causing use dangerous because of volume is excessive, in order to prevent that shake causes the heat exchanger tube displacement in the heat exchanger course of work, band steel support fixation heat exchanger tube is set in the casing 1 of preheater, for the water that steam cooling back is formed can better flow out, form certain angle between steam outlet pipe 5 and the face, angular range is 1-5 °.

For air is distributed fast, reach the effect of uniform heat exchange, 1 air inlet 2 places are provided with the deflector 8 that air is distributed fast in casing.

The utility model is owing to using clean energy resource to avoid being revealed the pollution of environment and the generation of cold end corrosion and stifled ash by flue gas, and service life of equipment prolongs greatly; It is little that the utility model also has radiation loss, thermal efficiency height, the advantage such as the current resistance of steam is little.

Claims

1. steam heat exchanger, has body structure, casing (1) is provided with air inlet (2) and air outlet (3), it is characterized in that: casing is provided with the straight pipe type heat exchanger tube in (1), heat exchanger tube comprises transverse tube (6) and vertical tube (7), casing (1) outside upper and lower side is respectively arranged with steam inlet pipe (4) and steam outlet pipe, be communicated with the transverse tube (6) of horizontally disposed shunting action of two rows of mutually staggered on the described steam inlet pipe (4), be communicated with a vertical tube (7) that queues the heat exchange effect on the every transverse tube (6), vertical tube (7) is vertical with transverse tube (6), every row's vertical tube (7) flows to corresponding lower transverse tubule (6) downwards, following horizontal row pipe (6) confluxes at last and passes in and out steam pipe (5), described vertical tube (7) is arranged for matrix form, heat exchanger tube is supported and fixed in the casing by band steel, form certain angle between described steam outlet pipe (5) and the horizontal plane, angular range is 1-5 °, and air inlet (2) locates to be provided with the deflector (8) that air is distributed fast in the described casing.