CN204142054U - U-shaped tubular structure flue gas heat collector - Google Patents
U-shaped tubular structure flue gas heat collector Download PDFInfo
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- CN204142054U CN204142054U CN201420532918.6U CN201420532918U CN204142054U CN 204142054 U CN204142054 U CN 204142054U CN 201420532918 U CN201420532918 U CN 201420532918U CN 204142054 U CN204142054 U CN 204142054U
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Abstract
The utility model relates to a kind of U-shaped tubular structure flue gas heat collector, is installed on boiler nozzle place.Comprise the tube bank of U-shaped pipe (1), hydroecium (4), water inlet pipe (2), outlet pipe (3), bend pipe end tube sheet (8), framework (5), deep bead (6) and condensate draining pipe (7), the U-shaped light pipe that described U-shaped pipe tube bank (1) is arranged by some misarrangement row oblique cuttings or U-shaped finned tube are formed; Described hydroecium (4) has one, the straight tube end tube sheet of (1) restrained by the top panel of hydroecium as U-shaped pipe, the straight tube end of U-shaped pipe tube bank (1) welds with between straight tube end tube sheet, the bend pipe end of U-shaped pipe tube bank (1) does not weld with between bend pipe end tube sheet (8), hydroecium (4) is restrained with U-shaped pipe together with (1) assembly and is loaded in framework (5), deep bead (6) be arranged on framework (5) into and out of mouth place, condensate draining pipe (7) is arranged on the bottom of framework (5) outlet flue.Adopt the utility model can reduce exhaust gas temperature energy-saving and emission-reduction, the drawing crack problem simultaneously pipe end weld seam can also being avoided to cause because of thermal stress.
Description
Technical field
The utility model relates to a kind of heat exchanger, is specifically related to a kind of flue gas heat collector.Be installed on boiler nozzle place.Belong to heating equipment technical field.
Background technology
Boiler utilizes the chemical energy of fuel or the heat energy of other energy, water is heated to the thermal power transfer equipment of certain parameter.When discharging from boiler after flue gas and water heat exchange, flue-gas temperature is still higher, if directly enter air, will cause larger heat loss.
At present, flue gas heat collector is set at boiler nozzle, by low temperature feedwater and waste heat flue gas heat exchange, exhaust gas temperature is reduced.Flue gas heat collector is from starting to normal operation process, heat-exchanging tube bundle and structural steel and iron etc. become hot process from cold conditions, thermal stress can be produced because heat rises, heat collector is in course of normal operation simultaneously, because import and export cigarette temperature difference is larger, temperature difference when low temperature feedwater enters heat-exchanging tube bundle and flows out tube bank is comparatively large, equally also can produce larger thermal stress.The structure that present conventional flue gas heat collector generally adopts is that hot replace tubes two ends and Tube-sheet Welding are fixed, and heat-transfer surface pipe, by the impact of thermal stress, causes pipe end and Tube-sheet Welding place to occur the phenomenon of drawing crack, had a strong impact on the normal operation of equipment.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of U-shaped tubular structure flue gas heat collector that thermal stress can be avoided to cause the drawing crack of hot replace tubes pipe end weld seam.
The purpose of this utility model is achieved in that a kind of U-shaped tubular structure flue gas heat collector, comprise the tube bank of U-shaped pipe, hydroecium, water inlet pipe, outlet pipe, bend pipe end tube sheet, framework, deep bead and condensate draining pipe, it is characterized in that: the U-shaped light pipe that described U-shaped pipe tube bank is arranged by some misarrangement row oblique cuttings or U-shaped finned tube are formed; Described hydroecium has one, water inlet pipe is all connected with hydroecium with outlet pipe, the straight tube end tube sheet that the top panel of hydroecium is restrained as U-shaped pipe, the straight tube end of U-shaped pipe tube bank welds with between straight tube end tube sheet, the bend pipe end of U-shaped pipe tube bank does not weld with between bend pipe end tube sheet, hydroecium loads in framework together with U-shaped pipe pipe bundle combinations body, deep bead be arranged on framework into and out of mouth place, condensate draining pipe is arranged on the bottom of framework outlet flue.
Low temperature feedwater enters hydroecium by inlet pipeline, then is discharged by outlet pipe after entering the tube bank of U-shaped pipe and the abundant heat exchange of flue gas, and water at low temperature absorbs flue gas liberated heat temperature and raises, and flue-gas temperature reduces the effect reaching energy-saving and emission-reduction.
The beneficial effects of the utility model are:
1, the utility model flue gas heat collector U-shaped pipe tube bank straight tube end and hydroecium first swollen rear weldering, bend pipe end does not weld with between tube sheet, can free wxpansion by bend pipe end during thermal stress, avoids and welds pipe end drawing crack; Hydroecium and bend pipe end tube sheet are fixing can along the free wxpansion of flue gas direction, as Fig. 3.
2, the arrangement of the utility model flue gas heat collector U-shaped pipe is compact, adopts oblique cutting to arrange, can reduce the overall volume of heat collector.The utility model U-shaped pipe arrangement is staggered in arrangement comparing of mode with conventional U-shaped pipe, the identical row of identical pipe, and the utility model arrangement obviously can reduce a lot of volume than conventional arrangement, as Fig. 4 (a) and Fig. 4 (b).
3, the tube bank of the utility model flue gas heat collector adopts U-shaped light pipe or finned tube, contrasts original structure, reduces the welding job of U-shaped end, reduces the leak source risk of half, eliminate a hydroecium, as shown in Fig. 5 (a) He Fig. 5 (b).
Accompanying drawing explanation
Fig. 1 is the utility model U-shaped tubular structure flue gas heat collector Facad structure schematic diagram.
Fig. 2 is the left side view of Fig. 1.
Fig. 3 is hydroecium of the present utility model and U-shaped pipe pipe bundle combinations body schematic diagram.
Fig. 4 (a) and Fig. 4 (b) arranges for the utility model U-shaped pipe oblique cutting and routine arranges comparison diagram.Wherein Fig. 4 (a) is the utility model U-shaped pipe oblique cutting layout drawing, and Fig. 4 (b) is the conventional layout drawing of U-shaped pipe.
Fig. 5 (a) and Fig. 5 (b) is the utility model heat collector tube bundle assembly and conventional heat collector tube bundle assembly comparison diagram.Wherein Fig. 5 (a) for the utility model heat collector tube bundle assembly figure, Fig. 5 (b) be conventional heat collector tube bundle assembly figure.
Reference numeral in figure:
U-shaped pipe tube bank 1
Water inlet pipe 2
Outlet pipe 3
Hydroecium 4
Framework 5
Deep bead 6
Condensate draining pipe 7
Bend pipe end tube sheet 8
Gripper shoe 9.
Detailed description of the invention
Be the utility model U-shaped tubular structure flue gas heat collector Facad structure schematic diagram see Fig. 1 and Fig. 2, Fig. 1.Fig. 2 is the left side view of Fig. 1.As can be seen from Fig. 1 and Fig. 2, the utility model U-shaped tubular structure flue gas heat collector, forms primarily of U-shaped pipe tube bank 1, hydroecium 4, water inlet pipe 2, outlet pipe 3, bend pipe end tube sheet 8, framework 5, deep bead 6 and condensate draining pipe 7.The U-shaped light pipe that described U-shaped pipe tube bank 1 is arranged by some misarrangement row oblique cuttings or U-shaped finned tube are formed; Hydroecium 4 has one, and hydroecium 4 interior separation becomes several little hydroeciums, water inlet pipe 2 and each one of outlet pipe 3, and water inlet pipe 2 is welded to connect with the little hydroecium of hydroecium 4 outermost end, and outlet pipe 3 is welded to connect with the little hydroecium of hydroecium 4 inner terminal; The straight tube end tube sheet of 1 restrained by the top panel of hydroecium 4 as U-shaped pipe, first swollen rear weldering between the straight tube end of U-shaped pipe tube bank 1 and straight tube end tube sheet, and the bend pipe end of U-shaped pipe tube bank 1 does not weld with between bend pipe end tube sheet, as shown in Figure 3; The hydroecium 4 that making has been assembled is restrained together with 1 assembly with U-shaped pipe and is loaded in framework 5, and the top panel both sides of hydroecium 4 are welded with the side panel of framework 5; Deep bead 6 is arranged on sentencing into and out of mouth of framework 5 and ensures that flue gas all passes through from U-shaped pipe tube bank 1; Condensate draining pipe 7 is arranged on the bottom of framework 5 outlet flue, for discharging condensed water.
Flue gas enters heat collector from the entrance of framework 5, by export discharges after restraining the water heat exchange in 1 with U-shaped pipe again; Low temperature feedwater enters hydroecium by water inlet pipe, then is discharged by outlet pipe after entering the tube bank of U-shaped pipe and the abundant heat exchange of flue gas, and water at low temperature absorbs flue gas liberated heat temperature and raises, and flue-gas temperature reduces the effect reaching energy-saving and emission-reduction.
Claims (3)
1. a U-shaped tubular structure flue gas heat collector, comprise the tube bank of U-shaped pipe (1), hydroecium (4), water inlet pipe (2), outlet pipe (3), bend pipe end tube sheet (8), framework (5), deep bead (6) and condensate draining pipe (7), it is characterized in that: the U-shaped light pipe that described U-shaped pipe tube bank (1) is arranged by some misarrangement row oblique cuttings or U-shaped finned tube are formed; Described hydroecium (4) has one, water inlet pipe (2) is all connected with hydroecium (4) with outlet pipe (3), the straight tube end tube sheet of (1) restrained by the top panel of hydroecium (4) as U-shaped pipe, the straight tube end of U-shaped pipe tube bank (1) welds with between straight tube end tube sheet, the bend pipe end of U-shaped pipe tube bank (1) does not weld with between bend pipe end tube sheet (8), hydroecium (4) is restrained with U-shaped pipe together with (1) assembly and is loaded in framework (5), deep bead (6) be arranged on framework (5) into and out of mouth place, condensate draining pipe (7) is arranged on the bottom of framework (5) outlet flue.
2. a kind of U-shaped tubular structure flue gas heat collector according to claim 1, it is characterized in that: described hydroecium (4) interior separation becomes several little hydroeciums, water inlet pipe (2) and each one of outlet pipe (3), water inlet pipe (2) welds with the little hydroecium of hydroecium (4) outermost end, and outlet pipe (3) welds with the little hydroecium of hydroecium (4) inner terminal.
3. a kind of U-shaped tubular structure flue gas heat collector according to claim 1, is characterized in that: the top panel both sides of described hydroecium (4) are welded with the side panel of framework (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420532918.6U CN204142054U (en) | 2014-09-17 | 2014-09-17 | U-shaped tubular structure flue gas heat collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420532918.6U CN204142054U (en) | 2014-09-17 | 2014-09-17 | U-shaped tubular structure flue gas heat collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204142054U true CN204142054U (en) | 2015-02-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420532918.6U Active CN204142054U (en) | 2014-09-17 | 2014-09-17 | U-shaped tubular structure flue gas heat collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204142054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874234A (en) * | 2015-06-09 | 2015-09-02 | 四川宏达股份有限公司 | Roasting flue gas heat recovery and dust suppression system of zinc oxide production device |
-
2014
- 2014-09-17 CN CN201420532918.6U patent/CN204142054U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874234A (en) * | 2015-06-09 | 2015-09-02 | 四川宏达股份有限公司 | Roasting flue gas heat recovery and dust suppression system of zinc oxide production device |
| CN104874234B (en) * | 2015-06-09 | 2017-01-18 | 四川宏达股份有限公司 | Roasting flue gas heat recovery and dust suppression system of zinc oxide production device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |