CN204665219U - Two drum broken pipe formula waste heat boiler - Google Patents
Two drum broken pipe formula waste heat boiler Download PDFInfo
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- CN204665219U CN204665219U CN201520240847.7U CN201520240847U CN204665219U CN 204665219 U CN204665219 U CN 204665219U CN 201520240847 U CN201520240847 U CN 201520240847U CN 204665219 U CN204665219 U CN 204665219U
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Abstract
The utility model discloses two drum broken pipe formula waste heat boiler, comprise: front side wall bottom is provided with the flue gas heat exchange chamber of gas approach, upper drum, lower drum is located at roof and the diapire of flue gas heat exchange chamber respectively, convection bank is communicated with between upper drum in flue gas heat exchange chamber and lower drum, down-comer is communicated with between upper drum outside flue gas heat exchange chamber and lower drum, exhanst gas outlet is provided with in the front portion of the roof of flue gas heat exchange chamber, the middle diaphragm plate intercepting flue gas is provided with in the front portion of flue gas heat exchange chamber, passage gaps is provided with between middle diaphragm plate and the rear wall of flue gas heat exchange chamber, the economizer be connected successively with exhanst gas outlet and chimney is provided with above flue gas heat exchange chamber, convection bank comprises the bending convection bank towards the bending of gas approach direction, and bending convection bank is arranged in middle diaphragm plate.The long service life of above-mentioned waste heat boiler, can reduce steam turbine waste gas output pressure is required, can reduce floor space, can improve installation effectiveness.
Description
Technical field
The utility model relates to the waste heat boiler that can utilize high-temperature flue gas waste heat, refers more particularly to two drum broken pipe formula waste heat boilers that can utilize steam turbine high-temperature waste gas.
Background technology
Now widely used waste heat boiler, its structure mainly comprises: front side wall bottom is provided with the flue gas heat exchange chamber of gas approach, upper drum is arranged at the roof of flue gas heat exchange chamber, lower drum is arranged at the diapire of flue gas heat exchange chamber, upper drum in flue gas heat exchange chamber and be communicated with straight convection bank between lower drum, down-comer is communicated with between upper drum outside flue gas heat exchange chamber and lower drum, the front portion of the roof of flue gas heat exchange chamber is provided with exhanst gas outlet, the middle diaphragm plate intercepting flue gas is provided with in the front portion of flue gas heat exchange chamber, be provided with between middle diaphragm plate and the rear wall of flue gas heat exchange chamber for the current passage gaps of flue gas, passage gaps is positioned at the rear portion of flue gas heat exchange chamber, straight convection bank is arranged in middle diaphragm plate, the economizer, the chimney that are connected with exhanst gas outlet successively is also arranged side by side at the rear of flue gas heat exchange chamber.During work, the high-temp waste gas that steam turbine is discharged enters the bottom of flue gas heat exchange chamber from gas approach, and with middle diaphragm plate below convection bank in water heat exchange, then the top of flue gas heat exchange chamber is entered from passage gaps, and with middle diaphragm plate above convection bank in water heat exchange, then flow out flue gas heat exchange chamber from exhanst gas outlet, and finally discharged by chimney after economizer.
There is following shortcoming in the waste heat boiler of said structure: one, in order to improve heat exchange efficiency, the space of flue gas heat exchange chamber is unsuitable excessive, so the rear wall of flue gas heat exchange chamber can near the rear portion of upper and lower drum during design, the rear portion being clouded in the straight convection bank between upper and lower drum so also will near the rear wall of flue gas heat exchange chamber; Middle diaphragm plate can be arranged in wherein to make straight convection bank, so the rear portion of middle diaphragm plate also can near the rear wall of flue gas heat exchange chamber, passage gaps is so just made to become very narrow and small, the resistance causing flue gas to circulate is very large, so just need the output pressure increasing steam turbine institute waste air, thus greatly can increase energy consumption.Two, due to straight convection bank that the convection bank be arranged between upper and lower drum is vertical, the surplus that straight convection bank is not almost expanded with heat and contract with cold, when the situation of expanding with heat and contract with cold, just easily there is cracking phenomena in the weld of straight convection bank and upper and lower drum, thus shortens the service life of waste heat boiler.Three, because economizer, chimney are all arranged side by side in the rear of flue gas heat exchange chamber, make the floor space of waste heat boiler comparatively large, in-site installation is also cumbersome, and installation effectiveness is lower.
Utility model content
Technical problem to be solved in the utility model is: by provide a kind of service life longer, greatly can reduce the requirement of steam turbine waste gas output pressure and floor space, two drum broken pipe formula waste heat boilers easy for installation can be reduced.
In order to solve the problem, the technical solution adopted in the utility model is: two drum broken pipe formula waste heat boiler, comprise: front side wall bottom is provided with the flue gas heat exchange chamber of gas approach, upper drum is arranged at the roof of flue gas heat exchange chamber, lower drum is arranged at the diapire of flue gas heat exchange chamber, convection bank is communicated with between upper drum in flue gas heat exchange chamber and lower drum, down-comer is communicated with between upper drum outside flue gas heat exchange chamber and lower drum, the front portion of the roof of flue gas heat exchange chamber is provided with exhanst gas outlet, the middle diaphragm plate intercepting flue gas is provided with in the front portion of flue gas heat exchange chamber, the front end of middle diaphragm plate and a left side, right two ends respectively with front side wall and the left side of flue gas heat exchange chamber, fit tightly inside right side wall, be provided with between middle diaphragm plate and the rear wall of flue gas heat exchange chamber for the current passage gaps of flue gas, passage gaps is positioned at the rear portion of flue gas heat exchange chamber, be characterized in: above flue gas heat exchange chamber, be provided with the economizer be connected successively with exhanst gas outlet and chimney, convection bank comprises the bending convection bank towards the bending of gas approach direction, bending convection bank is made up of the curved convection tube that some overbending directions are consistent, bending convection bank is arranged in middle diaphragm plate, and middle diaphragm plate is positioned at the bending place of bending convection bank, high-temperature flue gas enters the bottom of flue gas heat exchange chamber from gas approach, and carry out heat exchange with the bending convection bank below middle diaphragm plate, then the top of flue gas heat exchange chamber is entered through passage gaps, and carry out heat exchange with the bending convection bank above middle diaphragm plate, successively by discharging after economizer and chimney after eventually passing exhanst gas outlet.
Further, aforesaid pair of drum broken pipe formula waste heat boiler, wherein: economizer and chimney are positioned at the front of upper drum.
Further, aforesaid pair of drum broken pipe formula waste heat boiler, wherein: the heating surface piping of economizer is horizontally disposed, chimney is arranged at economizer top.
Further, aforesaid pair of drum broken pipe formula waste heat boiler, wherein: be provided with between economizer and chimney and fume afterheat can be utilized to produce the feed water preheater of hot water for life.
Further, aforesaid pair of drum broken pipe formula waste heat boiler, wherein: the rear wall of flue gas heat exchange chamber and the sidewall at left and right two ends are film water cold wall structure.
Further, aforesaid pair of drum broken pipe formula waste heat boiler, wherein: curved convection tube is interconnected by the straight convection tube of epimere all tilted towards gas approach direction and the straight convection tube of hypomere and forms.
Further, aforesaid pair of drum broken pipe formula waste heat boiler, wherein: the angle of upper and lower section of straight convection tube is 148 ± 5 °.
Further, aforesaid pair of drum broken pipe formula waste heat boiler, wherein: the long 0.8 ~ 1.5m of length of the length convection tube more straight than epimere of the straight convection tube of hypomere.
Further, aforesaid pair of drum broken pipe formula waste heat boiler, wherein: upper and lower section of straight convection tube is tooth punching spiral fin coil.
Further, aforesaid pair of drum broken pipe formula waste heat boiler, wherein: flue gas heat exchange chamber be arranged on can make the integral installation of flue gas heat exchange chamber chassis on, economizer and chimney are also bearing on chassis.
The utility model has the advantages that: described in the utility model pair of drum broken pipe formula waste heat boiler employs upper and lower asymmetric bending convection bank between upper and lower drum, on the one hand, bend the flexible of convection bank, thus when expanding with heat and contract with cold, weld between bending convection bank and upper and lower drum is not easy to crack, substantially increases the service life of waste heat boiler; On the other hand, bending convection bank can make setting middle diaphragm plate thereon away from the rear wall of flue gas heat exchange chamber, thus can passage gaps be increased, the resistance that passage gaps change ambassador flue gas flows through passage gaps also reduces greatly, thus the output pressure of steam turbine waste gas also can reduce greatly, eventually reduce the energy consumption of steam turbine; Again on the one hand, upper and lower asymmetric bending convection bank can improve the heat exchange efficiency of waste heat boiler greatly.The floor space of waste heat boiler can be reduced in the top that economizer and chimney are arranged at flue gas heat exchange chamber, and be also provided with chassis in this pair of drum broken pipe formula waste heat boiler, thus the integral installation together of flue gas heat exchange chamber, economizer, chimney can be made, substantially increase installation effectiveness.
Accompanying drawing explanation
Fig. 1 is the structural representation of described in the utility model pair of drum broken pipe formula waste heat boiler.
Fig. 2 is for bending the structural representation of curved convection tube in convection bank shown in Fig. 1.
Fig. 3 is A-A sectional view in Fig. 2.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the utility model is described in further detail.
Two drum broken pipe formula waste heat boiler, as shown in Figure 1, comprise: front side wall bottom is provided with the flue gas heat exchange chamber 1 of gas approach 11, upper drum 2 is arranged at the roof of flue gas heat exchange chamber 1, lower drum 3 is arranged at the diapire of flue gas heat exchange chamber 1, convection bank is communicated with between upper drum 2 in flue gas heat exchange chamber 1 and lower drum 3, down-comer is communicated with between upper drum 2 outside flue gas heat exchange chamber 1 and lower drum 3, the front portion of the roof of flue gas heat exchange chamber 1 is provided with exhanst gas outlet 12, the middle diaphragm plate 5 cutting off flue gas is provided with in the front portion of flue gas heat exchange chamber 1, the front end of middle diaphragm plate 5 and a left side, right two ends respectively with front side wall and the left side of flue gas heat exchange chamber 1, fit tightly inside right side wall, be provided with between middle diaphragm plate 5 and the rear wall of flue gas heat exchange chamber 1 for the current passage gaps 6 of flue gas, passage gaps 6 is positioned at the rear portion of flue gas heat exchange chamber 1, when there is no middle diaphragm plate 5, flue gas directly can rise to the front upper part of flue gas heat exchange chamber 1 from the front lower portion of flue gas heat exchange chamber 1, thus flue gas only can carry out heat exchange with the convection bank being positioned at flue gas heat exchange chamber 1 front portion, so just have lost the heat exchange area of the convection bank being positioned at flue gas heat exchange chamber 1 rear portion, arranging middle diaphragm plate 5 can guide flue gas to rise to the upper back of flue gas heat exchange chamber 1 from the rear lower of flue gas heat exchange chamber 1, the all convection banks in flue gas and flue gas heat exchange chamber 1 so just can be made to carry out heat exchange, the economizer 7 and chimney 8 that are connected successively with exhanst gas outlet 12 is provided with above flue gas heat exchange chamber 1, in the present embodiment, economizer 7 and chimney 8 are positioned at the front of upper drum 2, and the heating surface piping of economizer 7 is horizontally disposed, chimney 8 is arranged at economizer 7 top, and the position of economizer 7 and chimney 8 arranges the floor space that can reduce waste heat boiler like this, chimney 8 is arranged at the top of economizer 7, makes the layout of waste heat boiler on the one hand more rationally with compact, has adapted to the flow direction of flue gas on the other hand, thus reduced the resistance of flow of flue gas, be provided with between economizer 7 and chimney 8 and fume afterheat can be utilized to produce the feed water preheater 9 of hot water for life, being set to water preheater 9 is to better utilize fume afterheat, convection bank comprises the bending convection bank 4 towards the bending of gas approach 11 direction, that is: towards the bending convection bank 4 that the front end of flue gas heat exchange chamber 1 bends, bending convection bank 4 is made up of the curved convection tube 41 that some overbending directions are consistent, bending convection bank 4 is arranged in middle diaphragm plate 5, and middle diaphragm plate 5 is positioned at the bending place of bending convection bank 4, bending convection bank 4 is compared with straight convection bank, the flexibility of bending convection bank 4 is better, when bending convection bank 4 and expanding with heat and contract with cold, the stroke at bending convection bank 4 two ends can be reduced by stretching to overbending direction, thus make bending convection bank 4 with upper, lower drum 2, the weld of 3 is not fragile, and the middle part bending convection bank 4 because of forward fold away from the rear wall of flue gas heat exchange chamber 1, such rear portion of middle diaphragm plate 5 that can make also can away from the rear wall of flue gas heat exchange chamber 1, thus make passage gaps 6 become large, passage gaps 6 become large after flue gas by time resistance just diminished, thus the output pressure of steam turbine waste gas can be reduced, thus greatly can reduce energy consumption, high-temperature flue gas enters the bottom of flue gas heat exchange chamber 1 from gas approach 11, and carry out heat exchange with the bending convection bank 4 below middle diaphragm plate 5, then the top of flue gas heat exchange chamber 1 is entered through passage gaps 6, and carry out heat exchange with the bending convection bank 4 above middle diaphragm plate 5, successively by discharging after economizer 7 and chimney 8 after eventually passing exhanst gas outlet 12.
In the present embodiment, as Fig. 2, shown in Fig. 3, curved convection tube 41 is interconnected by the straight convection tube of epimere 411 all tilted towards gas approach 11 direction and the straight convection tube 412 of hypomere and forms, middle diaphragm plate 5 is positioned at the bending place of bending convection bank 4, that is: middle diaphragm plate 5 is positioned at the straight convection tube of epimere 411 and the straight convection tube 412 of hypomere and is interconnected place, wherein go up, the straight convection tube 411 of hypomere, the angle α of 412 is 148 ± 5 °, long 0.8 ~ the 1.5m of length of the length convection tube 411 more straight than epimere of the straight convection tube of hypomere 412, on, the straight convection tube 411 of hypomere, 412 are tooth punching spiral fin coil, curved convection tube 41 is configured to two-part, making can be made simply convenient, in setting, the straight convection tube 411 of hypomere, angle between 412 is to make passage gaps 6 be in suitable size, passage gaps 6 is unsuitable excessive also unsuitable too small, when passage gaps 6 is too small, resistance when flue gas flows through passage gaps 6 is just large, when passage gaps 6 is excessive, flue gas can connect liter from the front straight of passage gaps 6 and not arrive the rear portion of passage gaps 6, such flue gas only can carry out heat exchange with the interlude of the bending convection bank 4 near passage gaps 6 front portion, thus waste the heat exchange area at bending convection bank 4 two ends, the length of the straight convection tube of hypomere 412 is longer than the length of the straight convection tube of epimere 411, because the flue-gas temperature of flue gas heat exchange chamber 1 bottom is greater than the flue-gas temperature on flue gas heat exchange chamber 1 top on the one hand, the flue gas volume that the flue gas that temperature is high is lower than temperature is large, so need the resistance reduction that bulky space just can make flue gas circulate to hold the high bulky flue gas of temperature, length by increasing the straight convection tube of hypomere 412 in the present embodiment makes middle diaphragm plate 5 move up, thus make the volume of the flue gas heat exchange chamber 1 below middle diaphragm plate 5 be greater than the volume of the flue gas heat exchange chamber 1 above middle diaphragm plate 5, just very large circulating resistance is not had time in flue gas heat exchange chamber 1 in the middle of such high-temperature flue gas flows into below diaphragm plate 5, because need more heat exchange area to come to carry out heat exchange with the high-temperature flue gas of flue gas heat exchange chamber 1 bottom on the other hand, so the length of the straight convection tube of ratio epimere 411 of the length setting of the straight convection tube of hypomere 412 is long, so just substantially increase the heat exchange efficiency of this waste heat boiler, tooth punching spiral fin coil is compared with normal spiral finned tube, its advantage is: one, weight saving 10%, two, heat transfer effect improves 15% ~ 20%, three, not easily ash deposit and slag buildup, four, the change of gas flow direction can be adapted to.In the present embodiment, the rear wall of flue gas heat exchange chamber 1 and the sidewall at left and right two ends are film water cold wall structure, and the air-tightness of fin panel casing is good, not easily slagging scorification, leak out few, can reduce heat loss due to exhaust gas, thus improve boiler thermal output.In addition, in the present embodiment, flue gas heat exchange chamber 1 be arranged on can make the integral installation of flue gas heat exchange chamber chassis 91 on, economizer 7 and chimney 8 are bearing on chassis 91.Chassis 91 is set and can makes flue gas heat exchange chamber 1, economizer 7, chimney 8 integral installation together, thus substantially increase installation effectiveness.
The beneficial effects of the utility model are: described in the utility model pair of drum broken pipe formula waste heat boiler employs upper and lower asymmetric bending convection bank between upper and lower drum, on the one hand, bend the flexible of convection bank, thus when expanding with heat and contract with cold, weld between bending convection bank and upper and lower drum is not easy to crack, substantially increases the service life of waste heat boiler; On the other hand, bending convection bank can make setting middle diaphragm plate thereon away from the rear wall of flue gas heat exchange chamber, thus can passage gaps be increased, the resistance that passage gaps change ambassador flue gas flows through passage gaps also reduces greatly, thus the output pressure of steam turbine waste gas also can reduce greatly, eventually reduce the energy consumption of steam turbine; Again on the one hand, upper and lower asymmetric bending convection bank can improve the heat exchange efficiency of waste heat boiler greatly.The floor space of waste heat boiler can be reduced in the top that economizer and chimney are arranged at flue gas heat exchange chamber, and be also provided with chassis in this pair of drum broken pipe formula waste heat boiler, thus the integral installation together of flue gas heat exchange chamber, economizer, chimney can be made, substantially increase installation effectiveness.
Claims (10)
1. pair drum broken pipe formula waste heat boiler, comprise: front side wall bottom is provided with the flue gas heat exchange chamber of gas approach, upper drum is arranged at the roof of flue gas heat exchange chamber, lower drum is arranged at the diapire of flue gas heat exchange chamber, convection bank is communicated with between upper drum in flue gas heat exchange chamber and lower drum, down-comer is communicated with between upper drum outside flue gas heat exchange chamber and lower drum, the front portion of the roof of flue gas heat exchange chamber is provided with exhanst gas outlet, the middle diaphragm plate intercepting flue gas is provided with in the front portion of flue gas heat exchange chamber, the front end of middle diaphragm plate and a left side, right two ends respectively with front side wall and the left side of flue gas heat exchange chamber, fit tightly inside right side wall, be provided with between middle diaphragm plate and the rear wall of flue gas heat exchange chamber for the current passage gaps of flue gas, passage gaps is positioned at the rear portion of flue gas heat exchange chamber, it is characterized in that: above flue gas heat exchange chamber, be provided with the economizer be connected successively with exhanst gas outlet and chimney, convection bank comprises the bending convection bank towards the bending of gas approach direction, bending convection bank is made up of the curved convection tube that some overbending directions are consistent, bending convection bank is arranged in middle diaphragm plate, and middle diaphragm plate is positioned at the bending place of bending convection bank, high-temperature flue gas enters the bottom of flue gas heat exchange chamber from gas approach, and carry out heat exchange with the bending convection bank below middle diaphragm plate, then the top of flue gas heat exchange chamber is entered through passage gaps, and carry out heat exchange with the bending convection bank above middle diaphragm plate, successively by discharging after economizer and chimney after eventually passing exhanst gas outlet.
2. according to claim 1 pair of drum broken pipe formula waste heat boiler, is characterized in that: economizer and chimney are positioned at the front of upper drum.
3. according to claim 1 and 2 pair of drum broken pipe formula waste heat boiler, it is characterized in that: the heating surface piping of economizer is horizontally disposed, chimney is arranged at economizer top.
4. according to claim 1 and 2 pair of drum broken pipe formula waste heat boiler, is characterized in that: be provided with between economizer and chimney and fume afterheat can be utilized to produce the feed water preheater of hot water for life.
5. according to claim 1 and 2 pair of drum broken pipe formula waste heat boiler, is characterized in that: the rear wall of flue gas heat exchange chamber and the sidewall at left and right two ends are film water cold wall structure.
6. according to claim 1 pair of drum broken pipe formula waste heat boiler, is characterized in that: curved convection tube is interconnected by the straight convection tube of epimere all tilted towards gas approach direction and the straight convection tube of hypomere and forms.
7. according to claim 6 pair of drum broken pipe formula waste heat boiler, is characterized in that: the angle of upper and lower section of straight convection tube is 148 ± 5 °.
8. the two drum broken pipe formula waste heat boilers according to claim 6 or 7, is characterized in that: the long 0.8 ~ 1.5m of length of the length convection tube more straight than epimere of the straight convection tube of hypomere.
9. the two drum broken pipe formula waste heat boilers according to claim 6 or 7, is characterized in that: upper and lower section of straight convection tube is tooth punching spiral fin coil.
10. according to claim 1 and 2 pair of drum broken pipe formula waste heat boiler, is characterized in that: flue gas heat exchange chamber be arranged on can make the integral installation of flue gas heat exchange chamber chassis on, economizer and chimney are also bearing on chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520240847.7U CN204665219U (en) | 2015-04-21 | 2015-04-21 | Two drum broken pipe formula waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520240847.7U CN204665219U (en) | 2015-04-21 | 2015-04-21 | Two drum broken pipe formula waste heat boiler |
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| Publication Number | Publication Date |
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| CN204665219U true CN204665219U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520240847.7U Active CN204665219U (en) | 2015-04-21 | 2015-04-21 | Two drum broken pipe formula waste heat boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791744A (en) * | 2015-04-21 | 2015-07-22 | 张家港格林沙洲锅炉有限公司 | Double-drum pipe bending type waste heat boiler |
-
2015
- 2015-04-21 CN CN201520240847.7U patent/CN204665219U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791744A (en) * | 2015-04-21 | 2015-07-22 | 张家港格林沙洲锅炉有限公司 | Double-drum pipe bending type waste heat boiler |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 215600 No. 3 Nanyuan Road, Zhangjiagang Economic Development Zone, Suzhou City, Jiangsu Province Patentee after: Zhangjiagang Hailu Shazhou Technology Co., Ltd. Address before: 215600 Zhangjiagang Green sand Boiler Co., Ltd., 1 Renmin West Road, Zhangjiagang, Jiangsu, Suzhou Patentee before: Zhangjiagang Greens Shazhou Boiler Co., Ltd. |
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| CP03 | Change of name, title or address |