CN2449170Y - Built-in integrated heat-exchanging and ash-cleaning device for heat exchanger - Google Patents
Built-in integrated heat-exchanging and ash-cleaning device for heat exchanger Download PDFInfo
- Publication number
- CN2449170Y CN2449170Y CN00257943U CN00257943U CN2449170Y CN 2449170 Y CN2449170 Y CN 2449170Y CN 00257943 U CN00257943 U CN 00257943U CN 00257943 U CN00257943 U CN 00257943U CN 2449170 Y CN2449170 Y CN 2449170Y
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- heat
- deashing
- nozzle
- exchange tube
- pipe
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Abstract
The utility model relates to a built-in integrated heat exchanging and ash cleaning device for heat exchangers, which is composed of a main medium spraying pipe 1, a valve 2, a collecting pipe 11, an ash cleaning pipe 3, heat exchanging sleeve pipes 4 and a spray nozzle 5, wherein a row of heat exchanging sleeve pipes 4 are arranged on the edge of a side wall on one side adjacent to a flue, and each of the heat exchanging sleeve pipes 4 is positioned on an end head of a gap between the two adjacent rows of heat exchanging pipes 6 which are perpendicular to the side wall. The upper part of the ash cleaning pipe 3 is arranged in an upper wind box 7 and connected with the connecting pipe 11, and the lower part is positioned in the heat exchanging sleeve pipes 4. The spray nozzle 5 is arranged on the outer wall of the ash cleaning pipe 3, and the spraying direction of the spray nozzle 5 directs to a middle gap of the two adjacent rows of heat exchanging pipes 6 which are perpendicular to the side wall. Ash deposit or other dirty objects which are deposited or glued on surfaces of heat exchanging pipe groups of the heat exchangers are removed by ultrasonic media sprayed by the spray nozzle 5.
Description
The utility model belongs to and relates to the lip-deep dust stratification cleaning plant of a kind of industrial furnace heat exchanger heat transfer.
At present, the fireside surface of the heat exchanger that metallurgical industry furnace is used often contains in ash or the stove impurity such as material flying dust and is adhered to by fuel, stockpiles for a long time that dust on heating surface is difficult to remove and thicker, even exhaust gases passes is stopped up fully.Dust stratification influences heat transfer efficiency, reduces preheat temperature.As the stove of the heavy residual oil that burns, the heat transfer coefficient of air heat exchanger and preheat temperature can descend more than 20～30% after using 1 year, thereby influence the thermal efficiency of stove.In the past, the industrial furnace heat exchanger does not have special deashing device both at home and abroad, does not more have deashing and heat-exchange integrated equipment.When the deashing work on the exchanger heat exchange tube-surface will be treated the stove medium-capital overhauling, rely on manually to enter in the flue and clean, so not only spent the labour but also influenced production with artificial and simple mechanical means.In addition, factory is busy because of producing, and the dust stratification on the heat exchanger wall just clear up in the time of usually will waiting serious obstruction, and effect is undesirable.
The purpose of this utility model provides built-in heat exchange of a kind of heat exchanger and deashing integrated apparatus.This device can carry out deashing at any time simply outside stove.When needing deashing, only need open a valve and can carry out deashing; After deashing finishes, valve closing is got final product.
The purpose of this utility model is achieved in that
The deashing pipe is installed in bellows on the heat exchanger and heat exchange tube, and deashing pipe and heat exchange tube form a sleeve structure, and are arranged near on the side wall limit of flue one side, on the termination in slit between per two heat extractions exchange pipe.The supersonic speed medium that utilizes the nozzle on the deashing pipe to penetrate will deposit or stick to the exchanger heat exchange lip-deep dust stratification of nest of tubes or other foul and remove.Only needing to open outside heat exchanger brush pipe switch valve during deashing can clean at any time, and the dust stratification part of removing is fallen in the flue, and another part is discharged from chimney with flue gas.
Below in conjunction with accompanying drawing the utility model is described in detail.
Fig. 1 is that described deashing device is installed in the structural representation in the heat exchanger.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the nozzle schematic diagram of ejection medium in the described deashing device.
Fig. 4 is the B-B cutaway view of Fig. 1.
Among the figure: 1-is responsible for, 2-valve, 3-deashing pipe, 4-heat exchange tube, 5-nozzle, 6-heat-exchange tube, the last bellows of 7-, bellows under the 8-, 9-deashing medium channel, 10-preheated air passage, 11-ejection medium collector.
Described deashing device is responsible for 1 by being installed in the outer ejection medium of heat exchanger, be responsible for valve 2, the ejection medium collector of installing on 1 11, be installed in the deashing pipe 3 of 4 li of bellows 7 and heat exchange tubes, the nozzle 5 of the ejection medium of installing on heat exchange tube 4 and the deashing pipe 3 is formed.Exchanging sleeve pipe 4 near laying a heat extraction on the side wall limit of flue one side, each heat exchange tube 4 is all arranged on the termination in slit between the heat-exchange tube 6 vertical with side wall adjacent two.Described deashing pipe 3 tops are installed in the bellows 7 and with collector 11 and link to each other, its underpart is positioned at heat exchange tube 4, shut its end, lower end, and deashing pipe 3 inner chambers are deashing medium channel 9, and the circumferential weld between deashing pipe 3 outer walls and heat exchange tube 4 inwalls is a preheated air passage 10.Be equipped with nozzle 5 on deashing pipe 3 outer walls, nozzle 5 is stretched out by heat exchange tube 4 outer walls and welds together with sleeve pipe 4 outer walls.Described nozzle 5 arranges up and down that along 3 one-tenth one rows of deashing pipe spacing is 100～400mm between adjacent two nozzles, and the injection direction of nozzle 5 is the intermediate gap of adjacent two rows of the directive heat-exchange tube 6 vertical with side wall.
The slightly larger in diameter of described heat exchange tube 4 is in the diameter of heat-exchange tube 6, so that the circumferential weld area of preheated air passage 10 equals the cross-sectional area of heat-exchange tube 6.
Described nozzle 5 is for utilizing the convergent-divergent channel nozzle of Lavalle principle design, and being shaped as of described nozzle 5 shunk the smooth passage of afterwards expanding of processing earlier, and the medium velocity that ejects from nozzle 5 can reach the 300m/ supersonic speed of second.Described nozzle 5 usefulness heat resisting steel are made.
When described deashing device did not use, the pipeline of carrying the deashing medium was at high temperature because the continuous cooling of preheated air is under the low-temperature protection deashing pipe all the time.The another part that is installed in the bellows carries the conduit of ejection medium also to be in the temperature range of 350～550 degree.Like this, described deashing device both became one with heat exchanger, was hidden in the structure of not destroying former heat exchanger in the heat exchanger again and the arrangement of heat exchanger nest of tubes, can clear up the dust stratification on the Tube Sheet of Heat Exchanger outer wall simultaneously when deashing again extremely simply.
The course of work of the present utility model is as follows:
During deashing, open valve 2, ejection medium compressed air or steam just outside heat exchanger ejection medium be responsible for 1 and enter ejection medium collector 11, enter respectively in each deashing pipe 3 by collector 11 again, at last from nozzle 5 with the speed spirt heat exchanger nest of tubes of per second more than 300 meters.Because (by one side side wall) termination all is provided with the deashing pipe between per two heat extractions exchange pipe 6, so can dispose the dust stratification on the Tube Sheet of Heat Exchanger outer wall equably.If want the heat exchanging device to carry out overtemperature protection, then open valve 2, jet got final product in 20～30 minutes.
The utlity model has following advantage:
1, this deashing device blows brush evenly, and it is very convenient to operate, and can at any time carry out clearly simply outside stove Ash. When needing deashing, only need open a valve and can at any time carry out deashing; After deashing is complete, Valve closing gets final product. Deashing force is strong, and the dust stratification part of removing is fallen in the flue, and another part is with cigarette Gas is discharged from chimney, need not the workman and enters deashing in the flue.
2, because frequent deashing and blow brush intensity and concentrate, heat exchanger surface does not wait thick firm of formation The incrustation layer is just fallen clearly at any time, thereby heat transfer coefficient and wind-warm syndrome reduced rate are stabilized in below 5%.
3, have heat exchanger and carry out superheat protecting function. If heat exchanger is overheated, overtemperature alarm, at this moment Can open the valve of this deashing device, the outer high velocity air of heat exchanger is very just fast by being ejected in the deashing pipe The nest of tubes wall temperature of heat exchanger is reduced, therefore do not need to be installed as again the dilution of protection heat exchanger special use The special fan of flue gas.
4, during the heat exchanger operate as normal when deashing (not), set deashing device does not increase flue gas resistance.
Claims (6)
1, built-in heat exchange of a kind of heat exchanger and deashing integrated apparatus, it is characterized in that described deashing device is by being installed in the outer ejection medium person in charge (1) of heat exchanger, be responsible for valve (2), the ejection medium collector (11) that upward install (1), be installed in the deashing pipe (3) of bellows (7) and heat exchange tube (4) lining, heat exchange tube (4) and deashing pipe (3) are gone up the nozzle (5) of the ejection medium of installing and are formed; Exchanging sleeve pipe (4) near laying a heat extraction on the side wall limit of flue one side, each heat exchange tube (4) all is positioned on the termination in slit between the adjacent two rows heat-exchange tube (6) vertical with side wall; Described deashing pipe (3) top is installed in the bellows (7) and with collector (11) and links to each other, its underpart is positioned at heat exchange tube (4), shut its end, lower end, deashing pipe (3) inner chamber is deashing medium channel (9), and the circumferential weld between deashing pipe (3) outer wall and heat exchange tube (4) inwall is preheated air passage (10); On deashing pipe (3) outer wall, be equipped with nozzle (5), nozzle (5) is stretched out by heat exchange tube (4) outer wall and welds together with sleeve pipe (4) outer wall, described nozzle (5) becomes a row to arrange up and down along deashing pipe (3), and the injection direction of nozzle (5) is the intermediate gap of adjacent two rows of the directive heat-exchange tube (6) vertical with side wall.
2, install according to claim 1, the slightly larger in diameter that it is characterized in that described heat exchange tube (4) is in the diameter of heat-exchange tube (6), and the circumferential weld area of described preheated air passage (10) equals the cross-sectional area of heat-exchange tube (6).
3, install according to claim 1, it is characterized in that described nozzle (5) for utilizing the convergent-divergent channel nozzle of Lavalle principle design, the smooth passage of afterwards expanding of processing is shunk earlier in being shaped as of described nozzle (5).
4, as device as described in claim 1 or 2 or 3, it is characterized in that spacing is 100～400mm between neighbouring two nozzles of described deashing pipe (3),
5, as device as described in claim 1 or 2 or 3, it is characterized in that the medium velocity that nozzle 5 ejects is the 300m/ supersonic speed of second, described nozzle (5) is made with heat resisting steel.
6, as device as described in the claim 4, it is characterized in that the medium velocity that nozzle 5 ejects is the 300m/ supersonic speed of second, described nozzle (5) is made with heat resisting steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00257943U CN2449170Y (en) | 2000-10-19 | 2000-10-19 | Built-in integrated heat-exchanging and ash-cleaning device for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00257943U CN2449170Y (en) | 2000-10-19 | 2000-10-19 | Built-in integrated heat-exchanging and ash-cleaning device for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2449170Y true CN2449170Y (en) | 2001-09-19 |
Family
ID=33614357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00257943U Expired - Fee Related CN2449170Y (en) | 2000-10-19 | 2000-10-19 | Built-in integrated heat-exchanging and ash-cleaning device for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2449170Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739594A (en) * | 2021-09-22 | 2021-12-03 | 新疆宜化化工有限公司 | Automatic breaking process and device for preventing hardening of materials in calcium carbide furnace |
-
2000
- 2000-10-19 CN CN00257943U patent/CN2449170Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739594A (en) * | 2021-09-22 | 2021-12-03 | 新疆宜化化工有限公司 | Automatic breaking process and device for preventing hardening of materials in calcium carbide furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |