CN202973982U - Heat exchange tubes of coal economizer - Google Patents
Heat exchange tubes of coal economizer Download PDFInfo
- Publication number
- CN202973982U CN202973982U CN201220457288.1U CN201220457288U CN202973982U CN 202973982 U CN202973982 U CN 202973982U CN 201220457288 U CN201220457288 U CN 201220457288U CN 202973982 U CN202973982 U CN 202973982U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- heat exchange
- water
- exchanger tube
- tubes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to heat exchange tubes of a coal economizer, which include water inlets, water outlets and tube bodies, wherein the heat exchange tubes are multiple U-shaped tubes; and the water outlet of one heat exchange tube is communicated with the water inlet of the adjacent heat exchange tube through a communication device, so that the multiple heat exchange tubes can be communicated. The heat exchange tubes enable the overall layout of the equipment to be simplified; at the same time, due to the U-shaped design, the heat exchange tubes have the following advantages: the pressure on the water pump is low and the flow rate of water is low as compared with those of the snake-like tubes, and meanwhile, the operation time of the water flow in the heat exchange tubes is longer, the heating time of water is longer, more heat is absorbed, the temperature of outgoing water is high and further the heat exchange efficiency between smoke and water is increased as compared with those the straight tubes; and moreover, the heat exchange area of unit volume is improved, the installation is simple, and the operation and the maintenance is simple and convenient.
Description
Technical field
The utility model relates to the heat exchanger tube of economizer, relates in particular to the U-shaped heat exchanger tube of economizer.
Background technology
The Main Function of economizer is to absorb the feedwater of fume afterheat heating boiler, air and hot net water, and purpose is to reduce exhaust gas temperature, improves boiler thermal output.
Traditional economizer divides by manufactured materials: two kinds of cast iron and steel tube economizers are arranged, and the steel pipe type economizer is comprised of horizontally disposed connector bend in parallel (practise and claim coiled pipe).
General how horizontal being arranged in back-end ductwork of economizer, its operation principle: utilize water to flow in coiled pipe from bottom to top, flue gas transversal flow tube wall from top to bottom outside pipe, with realize flue gas and feed water between exchange heat.
But horizontal economizer has following shortcoming: 1) owing to adopting coiled pipe intensive horizontally disposed, so the limited moisture storage capacity of coiled pipe diameter is little; Water-aspirator pressure is very high, and water velocity is very fast, so the heat time heating time of water is short; Demineralized water flows through rapidly from heat exchanger tube, absorbs heat seldom, and water temperature can only improve 4-5 ℃ in nonclogging situation, so leaving water temperature is low; 2) due to dense arrangement, coal ash easily stops up space between each pipe, causes boiler draft not smooth, and the ature of coal burning is insufficient, takes coal, also causes air-introduced machine suction not enough, the boiler malleation; 3) maintenance trouble: after obstruction or seepage, whole economizer must be disintegrated, and then re-assembly, the expense of taking a lot of work material.
At present, when using the straight tubular heat exchanger different from horizontal economizer, because heat exchanger tube lacks sweep, so coal ash is difficult for stopping up space between each pipe, has reduced dust stratification, thereby reduced the maintenance frequency of economizer; But under certain water-aspirator pressure, water velocity is still very fast, and demineralized water flows through rapidly from heat exchanger tube, absorbs heat seldom, and the heat time heating time of water is short, leaving water temperature is low; WATER AS FLOW MEDIUM connects circulation difficulty in heat exchanger tube, layout is complicated, and in unit volume, heat exchange area reduces, and the pressure loss is larger, and installation, operation maintenance, maintenance difficulty.
The utility model content
The purpose of this utility model has been to provide a kind of heat exchanger tube of economizer, described heat exchanger tube comprises water inlet, delivery port and body, described heat exchanger tube is a plurality of U-shaped pipes, the described delivery port of a heat exchanger tube is communicated with by intercommunicating device with the water inlet of another adjacent heat exchanger tube, so that realize between a plurality of heat exchanger tube connecting.U-shaped heat exchanger tube can be so that the simplification of Whole Equipment layout; Simultaneously, when the U-shaped design of heat exchanger tube made heat exchanger tube work: compare coiled pipe, water-aspirator pressure was little, and water velocity reduces; Compare the pipe of keeping straight on, current are long operational time in heat exchanger tube, and the heat time heating time of water is long, absorbs more heat, and leaving water temperature is high, thereby has increased the heat exchange efficiency between the cigarette G﹠W; And the heat exchange area of raising unit volume, to install simply, operation maintenance is easy.In addition, because heat-exchanging tube bundle is comprised of a plurality of heat exchanger tubes, when stop up or seepage after, whole economizer need not be disintegrated, and then re-assembly, only need to occur to stop up or the corresponding heat exchanger tube dismounting of seepage, just changing can the restorer operation, makes maintenance easy.
Preferably, described heat exchanger tube is the U-shaped pipe of fluoroplastics material.Adopt the U-shaped pipe of fluoroplastics material can prevent to greatest extent that U-shaped pipe is corroded, to extend its life-span.
Preferably, described heat exchanger tube is vertical in economizer.Adopt vertical, make heat-exchanging tube bundle and flue be arranged in parallel, further reduced the coal ash that stops up space between each pipe, make ventilation smooth and easy, the ature of coal sufficient combustion is conducive to the maintenance of boiler, has reduced simultaneously the maintenance frequency of equipment.
Preferably, described intercommunicating device is the semicircle UNICOM capping with UNICOM's function.The water inlet seal joining of the delivery port of heat exchanger tube and another adjacent heat exchange tubes, after heat-exchanging tube bundle connects, realized that WATER AS FLOW MEDIUM circulates between heat exchanger tube, further extended the indwelling time of current in heat exchanger tube, the heat time heating time of water is longer, absorb more heat, leaving water temperature increases, thereby has further increased the heat exchange efficiency between the cigarette G﹠W, has improved simultaneously heat exchange area under unit volume, reduce the pressure loss, and make installation, operation maintenance, maintenance simple and easy.
In addition, described heat exchanger tube also comprises the top orifice plate that is arranged between described water inlet and described delivery port, so that heat exchanger tube is fixed.
U-shaped heat exchanger tube of the present utility model has overcome straight tubular heat exchanger in prior art, WATER AS FLOW MEDIUM connects the circulation difficulty in heat exchanger tube, layout is complicated, heat exchange efficiency between the cigarette G﹠W is low, in unit volume, heat exchange area is little, the pressure loss is larger, and the shortcoming of installation, operation maintenance, maintenance difficulty.
Description of drawings
Fig. 1 is schematic diagram of the present utility model
Description of reference numerals is as follows:
The water inlet 3 of the first fluoroplastics heat exchanger tube 1, the second fluoroplastics heat exchanger tube 2, the first fluoroplastics heat exchanger tube 1, the delivery port 4 of the first fluoroplastics heat exchanger tube 1, the water inlet 3 ' of the second fluoroplastics heat exchanger tube 2, the delivery port 4 ' of the second fluoroplastics heat exchanger tube 2, top orifice plate 5.
The specific embodiment
For making the auditor can further understand structure of the present utility model, feature and other purposes, now being accompanied by accompanying drawing in conjunction with appended preferred embodiment is described in detail as follows, use the illustrated embodiment of this accompanying drawing only to be used for the explanation the technical solution of the utility model, and non-limiting the utility model.
See also schematic diagram of the present utility model, Figure 1 shows that schematic diagram of the present utility model.The first fluoroplastics heat exchanger tube 1 is U-shaped, comprises water inlet 3, delivery port 4 and body; The second fluoroplastics heat exchanger tube 2 is U-shaped, comprise water inlet 3 ', delivery port 4 ' and body.Described fluoroplastics heat exchanger tube forms heat-exchanging tube bundle, and is that vertical is in economizer.This economizer is in when work, with the delivery port 4 of the first fluoroplastics heat exchanger tube 1 be connected the water inlet 3 of fluoroplastics heat exchanger tube 2 ' uses intercommunicating device connection, intercommunicating device is the semicircle UNICOM capping with UNICOM's function, circulates between heat exchanger tube to realize WATER AS FLOW MEDIUM.In addition, this heat exchanger tube also comprises and is arranged on water inlet 3,3 ' with delivery port 4, the top orifice plate 5 between 4 ' is with fixing heat exchanger tube.The circulating between heat exchanger tube by WATER AS FLOW MEDIUM taken away the unnecessary heat energy of flue gas, thereby reduced the temperature of flue gas, improved the thermal efficiency of boiler.This device layout is simplified, and can effectively increase heat exchange area under unit volume, reduces the pressure loss, is convenient to simultaneously installation, operation maintenance and maintenance.
What need statement is that above-mentioned utility model content and the specific embodiment are intended to prove the practical application of technical scheme that the utility model provides, and should not be construed as the restriction to the utility model protection domain.Those skilled in the art are in spirit of the present utility model and principle, when doing various modifications, being equal to and replacing or improve.Protection domain of the present utility model is as the criterion with appended claims.
Claims (5)
1. the heat exchanger tube of an economizer, it is characterized in that, described heat exchanger tube comprises water inlet, delivery port and body, described heat exchanger tube is a plurality of U-shaped pipes, the described delivery port of a heat exchanger tube is communicated with by intercommunicating device with the water inlet of another adjacent heat exchanger tube, so that realize between a plurality of heat exchanger tube connecting.
2. heat exchanger tube according to claim 1, is characterized in that, described heat exchanger tube is the U-shaped pipe of fluoroplastics material.
3. heat exchanger tube according to claim 1, is characterized in that, described heat exchanger tube is vertical in economizer.
4. heat exchanger tube according to claim 1, is characterized in that, described intercommunicating device is the semicircle UNICOM capping with UNICOM's function.
5. according to claim 1 ~ 4 arbitrary described heat exchanger tubes, is characterized in that, also comprises the top orifice plate that is arranged between described water inlet and described delivery port, with fixing heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220457288.1U CN202973982U (en) | 2012-09-07 | 2012-09-07 | Heat exchange tubes of coal economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220457288.1U CN202973982U (en) | 2012-09-07 | 2012-09-07 | Heat exchange tubes of coal economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202973982U true CN202973982U (en) | 2013-06-05 |
Family
ID=48515045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220457288.1U Expired - Lifetime CN202973982U (en) | 2012-09-07 | 2012-09-07 | Heat exchange tubes of coal economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202973982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644445A (en) * | 2013-12-24 | 2014-03-19 | 杭州自强链传动有限公司 | Heating oil tank with interlayer |
| CN105674789A (en) * | 2016-01-19 | 2016-06-15 | 昆明五威科工贸有限公司 | Water tank |
-
2012
- 2012-09-07 CN CN201220457288.1U patent/CN202973982U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644445A (en) * | 2013-12-24 | 2014-03-19 | 杭州自强链传动有限公司 | Heating oil tank with interlayer |
| CN105674789A (en) * | 2016-01-19 | 2016-06-15 | 昆明五威科工贸有限公司 | Water tank |
| CN105674789B (en) * | 2016-01-19 | 2018-01-19 | 昆明五威科工贸有限公司 | A kind of water tank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102322755A (en) | Efficient rectangular pipe casing type heating network heater | |
| CN104154661B (en) | Fuel oil and fuel gas angle pipe boiler structure for strengthening convection pipe screen through needle fins | |
| CN201519762U (en) | Heat pipe type ladle baking device | |
| CN202254970U (en) | Efficient rectangular shell-and-tube heating network heater | |
| CN204495131U (en) | High-efficiency swirl-type flue gas cooling heat exchange device | |
| CN201392112Y (en) | Main heat exchanger of gas heating water heater | |
| CN202973982U (en) | Heat exchange tubes of coal economizer | |
| CN204301563U (en) | Finned tube waste-heat recoverer | |
| CN201926336U (en) | Heat exchanger using waste heat of flue gas | |
| CN204388690U (en) | Stainless steel heat exchanger tube sheet unit | |
| CN203757757U (en) | Combined air preheater | |
| CN207661975U (en) | A kind of efficient hot water boiler | |
| CN102748746A (en) | Low-temperature coal economizer of boiler | |
| CN202547448U (en) | Heat exchanger for smoke waste heat recovery | |
| CN207112773U (en) | Condenser applied to steam boiler | |
| CN206410119U (en) | High-efficiency environment friendly gas fired-boiler | |
| CN201954524U (en) | Low-temperature economizer | |
| CN204987072U (en) | Improve heat transfer device of boiler air inlet temperature | |
| CN205317055U (en) | Finned tube diaphragm type low -level (stack -gas) economizer | |
| CN202692111U (en) | Horizontal air pre-heater facilitating ash removal | |
| CN202501441U (en) | High flow velocity flue gas waste heat recovery device | |
| CN215002249U (en) | Circulation volume adjustable organic heat carrier furnace | |
| CN203116053U (en) | Flue gas condensable type combination low-resistance energy saver | |
| CN202350080U (en) | Heat pipe type air preheater | |
| CN211399739U (en) | Gas steam engine heat exchanger combining fin plate structure and flat tube structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |