CN87208214U - Spray type pipe heat exchanger - Google Patents
Spray type pipe heat exchanger Download PDFInfo
- Publication number
- CN87208214U CN87208214U CN 87208214 CN87208214U CN87208214U CN 87208214 U CN87208214 U CN 87208214U CN 87208214 CN87208214 CN 87208214 CN 87208214 U CN87208214 U CN 87208214U CN 87208214 U CN87208214 U CN 87208214U
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- jet flow
- pipe
- tube
- outer tube
- air
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Abstract
The spray type pipe heat exchanger of the utility model relates to a new technology for reclaiming the flue gas heat, preheating the combustion air or coal gas, saving the fuel, raising the combustion temperature and yield of industrial furnaces. The utility model is composed of a plurality of cone inner pipes, corrugated outer sleeves and u-shaped pipes, shaped spray pipes and swirled inserts are arranged inside the heat exchanger, and radiant panels and radiant walls are arranged outside the heat exchanger, so that the spray single pipe groups are assembled. The single pipe groups are provided with the flue in parallel and make use of the air convection and flue gas radiant heat transfer to preheat air.
Description
The invention belongs to a kind of heat-exchange device.
Heat exchanger is used for reclaiming the hot preheated air of physics of flue gas, its objective is fuel savings, improves furnace temperature, increases output and reduces cost.The physics heat that flue gas is taken away generally accounts for the 30-60% of fuel combustion total amount of heat, and temperature is 600-1100 ℃.100 ℃ of the every increases of preheated air temperature can reduce Fuel Consumption more than 5%, are one of energy-conservation important measures of industrial furnace.
Publish " used for industrial furnace heat-exchange device " described efflux heat-exchanger according to 86 years metallurgical publishing houses, its structure is made of three layers of concentric tubes and flue gas and hot-air outlet box.Interior pipe is the air jet pipe, outer tube is the flue gas jet pipe, intermediate casing is a heat-exchange surface, air from interior pipe sidewall spurt hole jet flow to heat-exchange tube, flue gas from outer tube sidewall spurt hole jet flow to heat-exchange tube so that preheated air, the air of preheating flows vertically upward along interior pipe and heat exchanger tube gap.Owing to adopt a jet flow, therefore the effect of the mobile aspect effect injection heat transfer of hot-air, is difficult to improve air preheating temperature, and simultaneously, outer tube flue gas jet flow need be joined heat resisting exhauster rising flue gas pressures and be realized also existing certain technical difficulty.In addition, be difficult to be combined into the heat exchanger of exchange capability of heat greatly, should not assemble and keep in repair from structure.
The objective of the invention is for the efficient that improves above-mentioned jet flow tubular exchanger, increase exchange capability of heat, improve air preheating temperature, be convenient to assembling and maintenance, thereby designed novel jet flow tubular exchanger, adopt repeatedly injection heat transfer of air, flue gas flows along the vertical moire pipe and increases heat exchange area, avoid the flue gas jet flow to cause technical difficulty, improved heat exchange efficiency.
The structure of jet flow tubular exchanger of the present invention is seen accompanying drawing 1,2,3, double-deck concentric tubes (1), (2), radiant panel (6), radiant wall (7), cold air plenum chamber (5) and hot-air plenum chamber (4).Interior pipe comprises that plural termination closed side offers the special-shaped jet flow straight tube of aperture and the bend pipe at 180 ° of angles, be linked to be in the U-shaped with series system and manage, outer tube comprises that plural vertical vertical corrugated direct current heat exchanger tube (8) and 180 ° of bend pipes are connected in series and constitutes the insert (3) of installing band cyclone in its bend pipe of U-shaped outer tube.Constitute the jet flow single tube by interior pipe and outer tube, see accompanying drawing, single tube is a plural serial stage, directly coupling, and every cascade bore dia strengthens gradually.Two above single tubes are connected in parallel and are combined into jet flow single tube group and see accompanying drawing for the efflux heat-exchanger formant.Install radiant panel between the outer tube, install radiant wall between the jet flow single tube group.Jet flow single tube group is along the parallel distribution of flue, and flue gas is along the parallel following current of single tube group.
Outer tube of the present invention has the vertical vertical corrugated straight tube (8) that crest more than three and corresponding trough form, accompanying drawing three is the cross section of vertical corrugated straight tube, row's number that interior pipe is offered spurt hole is identical with the crest number, its position is corresponding with crest, in pipe spurt hole and outer tube corrugation pitch less than 4 times of injection diameter, vertical, the lateral separation of spray orifice is less than 6 times of injection diameter.Spray orifice and jet pipe diameter of inner pipe are that the speed of crossing spray orifice according to air communication is 15～25 meter per seconds, and air-flow is determined less than 8 meter per seconds at the flow velocity of interior pipe.The bend pipe outer wall of interior pipe is set up axial-flow type flight cyclone or shaft type guide vane cyclone, and cyclone is the insert of the bend pipe of outer tube.
The present invention is divided into two above jet flow single tube groups for the ease of layout, maintenance and the maintenance of jet flow tubular exchanger with heat exchanger, is arranged in parallel along flue, adopt between each group and be connected in parallel, such heat exchanger can purge and change single tube under the situation of not blowing out.
The present invention adopts the method for intensive aperture, multi-injection in order to improve the convection transfer rate of air side, each single tube.Air sprays more than three times by aperture, and each air sprays the crest top that all is injected into the outer tube inboard, so vertical row's number of spray orifice is identical with the crest number of outer tube.In order to improve the heat transfer efficiency of bend pipe in the single tube, adopt the insert of band cyclone, increase the contact area of air and outer tube.Flue gas streams to improve the heat transfer coefficient of fume side along ripple along the outside of vertical vertical corrugated outer tube.
The present invention installs radiant panel in order to improve the radiation heat transfer coefficient of fume side between the jet flow single tube, assembles radiant wall between the jet flow single tube group, and radiant panel adopts the metallic plate of flame-retardant fibre board or hairtail squamous to make.The refractory brickwork that refractory brickwork or band thrust are pasted by refractory fibre by radiant wall system is made.
The present invention is under identical flue-gas temperature and heat exchange area condition, and the general heat exchanger of preheat temperature improves 50-150 ℃, and complex heat transfer coefficient can reach 52 watts/meter
2More than the Kelvin.Air side adopts big circulation area and reasonable ejection structure and suitable spouting velocity to reduce the air side pressure loss.Adopt U-shaped single tube and vertical corrugated outer tube, improve structural strength calorific intensity and hot joining and be subjected to ability, be difficult for dust stratification, be convenient to cleaning.The general heat exchanger of the wall surface temperature of jet flow single tube is low, and therefore, selection rationally then can reach more than 5 years service life.Simultaneously, the present invention is simple in structure, in light weight, volume is little, be convenient to installation and maintenance, maintenance, replacing jet flow single tube.Investment payback time was generally about 1 year.
The present invention uses big-and-middle-sized continuous-type furnace widely, various heat-treatment furnaces, and trolley type heating furnace, forge furnace, and chemical industry and building materials are with stove etc.
Claims (9)
1, a kind of jet flow tubular exchanger, comprise pipe (1) and concentric outer tube (2), cold air (5) and hot-air (4) plenum chamber in the air jet, it is characterized in that plural U-shaped single tube composes in parallel jet flow single tube group, again by the combination that is connected in parallel of two above single tube groups, the outer tube of single tube is vertical moire shape pipe (8) formation of connecting with the U-bend (3) of interior dress cyclone insert, installs between outer tube and installs radiant wall (7) between radiant panel (6), the single tube group.
2, according to the described jet flow tubular exchanger of claim 1, pipe comprises two with upper end head sealed in it is characterized in that, special-shaped jet flow straight tube and U-bend of jet flow aperture offered in the side, connect in the U-shaped with series system and to manage, outer tube comprises more than two the bend pipe of dress cyclone insert in vertical vertical corrugated direct current heat exchanger tube and, constitute the U-shaped outer tube with series system, interior pipe and outer tube constitute the jet flow single tube.
3, according to claim 1,2 described jet flow tubular exchangers is characterized in that single tube is a plural serial stage, directly coupling, and every cascade bore dia strengthens gradually.
4, according to claim 1,2 described jet flow tubular exchangers is characterized in that outer tube is that three above crests and corresponding trough are formed vertical moire shape pipe, and row's number that interior pipe is offered spurt hole is identical with the crest number, and its position is corresponding with crest.
5, it is characterized in that according to the described jet flow tubular exchanger of claim 3 in pipe offer distance between spurt hole and crest less than four times of injection diameter, spray orifice vertically, horizontal spacing is less than six times of injection diameter.
6, according to claim 1,2 described jet flow tubular exchangers, it is characterized in that injection diameter and jet flow diameter of inner pipe, is 15～25 meter per seconds according to the rate of outflow of air-flow in spray orifice, and air-flow is determined less than 8 meter per seconds at the flow velocity of interior pipe.
7, according to the described jet flow tubular exchanger of claim 1, it is characterized in that the U-shaped outer wall of inner tube sets up axial-flow type flight, axial-flow type guide vane cyclone, be the interior insert of the U-bend of outer tube.
8,, it is characterized in that radiant panel is flame-retardant fibre board, cataphracted metallic plate according to the described jet flow tubular exchanger of claim 1; Radiant wall is the refractory brickwork of bonding flame-retardant fibre board, the refractory brickwork of band thrust.
9,, it is characterized in that jet flow single tube group is arranged in parallel along flue according to the described jet flow tubular exchanger of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208214 CN87208214U (en) | 1987-05-22 | 1987-05-22 | Spray type pipe heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208214 CN87208214U (en) | 1987-05-22 | 1987-05-22 | Spray type pipe heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87208214U true CN87208214U (en) | 1988-05-25 |
Family
ID=4823519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87208214 Expired - Lifetime CN87208214U (en) | 1987-05-22 | 1987-05-22 | Spray type pipe heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87208214U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460052C (en) * | 2006-06-08 | 2009-02-11 | 武汉科技大学 | Solid ammonium-salt reactor |
| CN104457033A (en) * | 2014-10-30 | 2015-03-25 | 浙江理工大学 | Blade type heat exchanger |
| CN107420891A (en) * | 2016-05-23 | 2017-12-01 | 林高山 | Air inlet processor for combustion apparatus |
-
1987
- 1987-05-22 CN CN 87208214 patent/CN87208214U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460052C (en) * | 2006-06-08 | 2009-02-11 | 武汉科技大学 | Solid ammonium-salt reactor |
| CN104457033A (en) * | 2014-10-30 | 2015-03-25 | 浙江理工大学 | Blade type heat exchanger |
| CN104457033B (en) * | 2014-10-30 | 2016-11-23 | 浙江理工大学 | Blade type heat exchanger |
| CN107420891A (en) * | 2016-05-23 | 2017-12-01 | 林高山 | Air inlet processor for combustion apparatus |
| CN107420891B (en) * | 2016-05-23 | 2019-03-15 | 林高山 | Air inlet processor for combustion apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |