CN206488664U - Flue gas heat-exchange unit - Google Patents
Flue gas heat-exchange unit Download PDFInfo
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- CN206488664U CN206488664U CN201720167404.9U CN201720167404U CN206488664U CN 206488664 U CN206488664 U CN 206488664U CN 201720167404 U CN201720167404 U CN 201720167404U CN 206488664 U CN206488664 U CN 206488664U
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- end cap
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- pipe
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Abstract
The utility model discloses a kind of flue gas heat-exchange unit, it includes cavity, first end cap, second end cap, some heat exchanger tubes and the support for supporting cavity, gas approach and exhanst gas outlet are provided with cavity, the first end cap and the second end cap are respectively equipped with cavity two ends, covered in first end provided with drain pipe and feed tube setting up and down, between the first end cap and respective chamber end, an orifice plate is equipped between second end cap and respective chamber end, heat exchanger tube is interspersed between the corresponding through hole of two orifice plates, spiral coil is provided with feed tube outer cover, the entrance point of spiral coil is connected by delivery pipe with exhanst gas outlet.Advantage：Cryogenic media heat exchange in the flue gas and feed tube that exhanst gas outlet is discharged, can reduce the smoke problem finally discharged, and then reach the purpose for improving smoke heat energy utilization rate while preheating cryogenic media；And by setting dredging pipe and gas pressure charging valve to solve spiral coil blockage problem, it is ensured that equipment is normally run.
Description
Technical field：
The utility model is related to flue gas waste heat recovery technical field, relates in particular to a kind of flue gas heat-exchange unit.
Background technology：
The rich coal resources of China, thermal power generation still has great potential.The flue gas produced after boiler combustion, according to boiler
The difference of form and coal-fired species, its temperature is general between 110 DEG C~170 DEG C.Typically removed using flue gas heat-exchange unit to reclaim
Heat after dirt in flue gas, as shown in figure 1, common flue gas heat-exchange unit include cavity 1, it is the first end cap 2, the second end cap 3, some
Root heat exchanger tube 4 and the support 5 for supporting cavity 1, are provided with gas approach 1.1 and exhanst gas outlet 1.2, in cavity 1 on cavity 1
Two ends are respectively equipped with the first end cap 2 and the second end cap 3, the feed tube 7 of upper setting are provided with the first end cap 2, in the second end cap 3
It is all provided with provided with drain pipe 6 between the first end cap 2 and the end of respective chamber 1, between the second end cap 3 and the end of respective chamber 1
There is an orifice plate 8, heat exchanger tube 4 is interspersed between the corresponding through hole 8.1 of two orifice plates 8；The flue gas of boiler discharge enters through flue gas
Mouth 1.1 enters cavity 1, and cryogenic media enters each heat exchanger tube 4 through feed tube 7 and raised with temperature after the flue gas heat exchange in cavity 1,
And discharged through drain pipe 6, dust removal process is carried out after being discharged after flue-gas temperature reduction through exhanst gas outlet 1.2, and then reach recovery cigarette
The purpose of gas heat.But, there is problems with above-mentioned heat exchanger：1st, the flue-gas temperature discharged through exhanst gas outlet 1.2 remains to reach
To 30-50 DEG C, if being directly discharged in air still cause the waste of heat energy, heat energy recovery rate is low；2nd, the flue gas of boiler discharge
And to flow through the cryogenic media of heat exchanger tube 4 residence time in cavity 1 short, exchange heat insufficient, cause heat recovery rate low.
Utility model content：
The purpose of this utility model is to provide a kind of heat recovery rate high flue gas heat-exchange unit.
The utility model is implemented by following technical scheme：Flue gas heat-exchange unit, it include cavity, the first end cap, the second end cap,
Some heat exchanger tubes and the support for supporting the cavity, are provided with gas approach and exhanst gas outlet, in institute on the cavity
State cavity two ends and be respectively equipped with first end cap and second end cap, cover to go out provided with setting up and down in the first end
Liquid pipe and feed tube, between first end cap and the corresponding cavity end, second end cap and the correspondence cavity
An orifice plate is equipped between end, the heat exchanger tube is interspersed between the corresponding through hole of two orifice plates, it is described enter
Liquid pipe outer cover is provided with spiral coil, and the entrance point of the spiral coil is connected by delivery pipe with the exhanst gas outlet.
Further, it also includes dredging pipe, and control valve is equiped with the delivery pipe；The dredging pipe two ends with
The delivery pipe connection at the control valve two ends, is equiped with gas boosting valve on the dredging pipe；In the spiral coil
Entrance point and the port of export are respectively equipped with first pressure table and second pressure table.
Further, the first end cap inner horizontal between the feed tube and the drain pipe provided with first every
First cover internal is divided into hot-water cavity and cold water cavity setting up and down by plate, first dividing plate.
Further, horizontally disposed second partition, the second partition and described first are provided with the inside cavity
Dividing plate flushes setting；Described second partition one end and the orifice plate adjacent with second end cap are fixedly connected, and described second
Baffling passage is formed between the end cap other end and the orifice plate adjacent with first end cap；Adjacent with second end plate
The cavity bottom and top be respectively equipped with the gas approach and the exhanst gas outlet.
Advantage of the present utility model：1st, the cryogenic media heat exchange in the flue gas and feed tube that exhanst gas outlet is discharged, preheating
The flue-gas temperature finally discharged can be reduced while cryogenic media, and then reaches the purpose for improving smoke heat energy utilization rate；2nd, lead to
The flow that the first dividing plate and second partition extension cryogenic media and flue gas are set in cavity is crossed, and then both is fully exchanged heat,
The utilization rate of heat energy is improved, the purpose of high efficient heat exchanging is reached.
Brief description of the drawings：
Fig. 1 is flue gas heat-exchange unit structural representation in the prior art.
Fig. 2 is structural representation of the present utility model.
Cavity 1, gas approach 1.1, exhanst gas outlet 1.2, the first end cap 2, hot-water cavity 2.1, cold water cavity 2.2, the second end cap
3rd, heat exchanger tube 4, support 5, drain pipe 6, feed tube 7, orifice plate 8, through hole 8.1, spiral coil 9, the first dividing plate 10, second partition
11st, baffling passage 12, first pressure table 13, second pressure table 14, delivery pipe 15, dredging pipe 16, control valve 17, gas boosting valve
18。
Embodiment：
As shown in Fig. 2 flue gas heat-exchange unit, it includes cavity 1, the first end cap 2, the second end cap 3, some heat exchanger tubes 4, dredged
Siphunculus 16 and the support 5 for supporting cavity 1, are provided with gas approach 1.1 and exhanst gas outlet 1.2 on cavity 1, in 1 liang of cavity
End is respectively equipped with the first end cap 2 and the second end cap 3, and drain pipe 6 and feed tube 7 setting up and down are provided with the first end cap 2,
An orifice plate 8 is equipped between first end cap 2 and the end of respective chamber 1, between the second end cap 3 and the end of respective chamber 1, two
Heat exchanger tube 4 is interspersed between the corresponding through hole 8.1 of individual orifice plate 8；
The inner horizontal of the first end cap 2 between feed tube 7 and drain pipe 6 is provided with the first dividing plate 10, and the first dividing plate 10 will
It is divided into hot-water cavity 2.1 and cold water cavity 2.2 setting up and down inside first end cap 2, it is ensured that the medium before heat exchange and after heat exchange is each
Flow, be independent of each other；Each heat exchange through being connected with cold water cavity 2.2 after cryogenic media initially enters cold water cavity 2.2 through feed tube 7
Pipe 4 enters in the second end cap 3, and the medium in the second end cap 3 flow to hot-water cavity 2.1 through heat exchanger tube 4 corresponding with hot-water cavity 2.1
Discharged by drain pipe 6；
Horizontally disposed second partition 11 is provided with inside cavity 1, second partition 11 flushes setting with the first dividing plate 10；The
The one end of two dividing plate 11 and the orifice plate 8 adjacent with the second end cap 3 are fixedly connected, the other end of second partition 11 and with the phase of the first end cap 2
Baffling passage 12 is formed between adjacent orifice plate 8；Flue gas is respectively equipped with the bottom and top of the cavity 1 adjacent with the second end cap 3
Import 1.1 and exhanst gas outlet 1.2；
The high-temperature flue gas entered through gas approach 1.1 is flowed from the second end cap 3 to the direction of the first end cap 2, and cold water cavity 2.2
Interior medium is flowed after entering correspondence heat exchanger tube 4 from the first end cap 2 to the direction of the second end cap 3, i.e. the height of the lower section of second partition 11
Warm flue gas and the cryogenic media reverse flow in corresponding heat exchanger tube 4, can fully exchange heat；
The flue gas of the lower section of second partition 11 is reached after the orifice plate 8 at the first end cap 2, enters second partition through baffling passage 12
Inside the cavity 1 of 11 tops, then flowed, finally discharged through exhanst gas outlet 1.2 from the first end cap 2 to the direction of the second end cap 3, and
Medium in second end cap 3 is flowed after entering the heat exchanger tube 4 of the top of second partition 11 from the second end cap 3 to the direction of the first end cap 2,
That is the high-temperature flue gas of the top of second partition 11 fully exchanges heat with the cryogenic media reverse flow in corresponding heat exchanger tube 4；
Spiral coil 9 is provided with the outer cover of feed tube 7, the entrance point of spiral coil 9 passes through delivery pipe 15 and exhanst gas outlet
1.2 connection；The flue gas discharged through exhanst gas outlet 1.2 is changed into spiral coil 9 with the cryogenic media in feed tube 7 by the road
Cryogenic media in heat, feed tube 7 can absorb the fume afterheat in spiral coil 9, on the one hand, can be to low in feed tube 7
Warm medium is preheated, and then improves the heat exchange efficiency of cryogenic media and high-temperature flue gas in cavity 1；On the other hand, can be abundant
Fume afterheat is absorbed, smoke heat energy utilization rate is improved；
First pressure table 13 and second pressure table 14 are respectively equipped with the entrance point of spiral coil 9 and the port of export, in delivery pipe
Control valve 17 is equiped with 15；Delivery pipe 15 of the two ends of dredging pipe 16 with the two ends of control valve 17 is connected, and is filled on dredging pipe 16
Provided with gas boosting valve 18；System operation is initial, opens control valve 17, closes gas boosting valve 18, what exhanst gas outlet 1.2 was exported
Flue gas is preheated through control valve 17 into spiral coil 9 to the medium in feed tube 7；And pass through first pressure table 13 and second
Pressure gauge 14 observes the pressure in the porch of spiral coil 9 and exit respectively, when observing that the pressure at first pressure table 13 is high
When second pressure table 14, illustrate the situation for occurring in that dust stratification is blocked inside spiral coil 9, immediately closing control valve 17, opening
Gas boosting valve 18, the flue gas that exhanst gas outlet 1.2 is discharged enters spiral coil 9 after being pressurized through gas boosting valve 18, and then by spiral shell
Dust stratification blowout in capstan pipe 9, reaches the purpose of dredging pipeline.
Preferred embodiment of the present utility model is these are only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (4)
1. flue gas heat-exchange unit, it includes cavity, the first end cap, the second end cap, some heat exchanger tubes and for supporting the cavity
Support, on the cavity be provided with gas approach and exhanst gas outlet, be respectively equipped with first end cap at the cavity two ends
With second end cap, covered in the first end provided with drain pipe and feed tube setting up and down, first end cap with
An orifice plate is equipped between the correspondence cavity end, between second end cap and the corresponding cavity end, at two
The heat exchanger tube is interspersed between the corresponding through hole of the orifice plate, it is characterised in that be provided with spiral in the feed tube outer cover
Coil pipe, the entrance point of the spiral coil is connected by delivery pipe with the exhanst gas outlet.
2. flue gas heat-exchange unit according to claim 1, it is characterised in that it also includes dredging pipe, in the delivery pipe
It is equiped with control valve；The delivery pipe of the dredging pipe two ends with the control valve two ends is connected, on the dredging pipe
It is equiped with gas boosting valve；First pressure table and second pressure table are respectively equipped with the spiral coil entrance point and the port of export.
3. according to any described flue gas heat-exchange unit of claim 1 or 2, it is characterised in that the feed tube and it is described go out liquid
The first end cap inner horizontal between pipe is provided with the first dividing plate, and first cover internal is divided into by first dividing plate
The hot-water cavity and cold water cavity of lower setting.
4. flue gas heat-exchange unit according to claim 3, it is characterised in that in the inside cavity provided with horizontally disposed the
Two dividing plates, the second partition flushes setting with first dividing plate；Described second partition one end and with the second end cap phase
The adjacent orifice plate is fixedly connected, and is formed between the second partition other end and the orifice plate adjacent with first end cap
Baffling passage；The gas approach is respectively equipped with the bottom and top of the cavity adjacent with second end cap and described
Exhanst gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720167404.9U CN206488664U (en) | 2017-02-23 | 2017-02-23 | Flue gas heat-exchange unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720167404.9U CN206488664U (en) | 2017-02-23 | 2017-02-23 | Flue gas heat-exchange unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206488664U true CN206488664U (en) | 2017-09-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720167404.9U Active CN206488664U (en) | 2017-02-23 | 2017-02-23 | Flue gas heat-exchange unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206488664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664585A (en) * | 2020-06-10 | 2020-09-15 | 珠海格力电器股份有限公司 | Heat exchange device and water heater |
-
2017
- 2017-02-23 CN CN201720167404.9U patent/CN206488664U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664585A (en) * | 2020-06-10 | 2020-09-15 | 珠海格力电器股份有限公司 | Heat exchange device and water heater |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 014010 rare earth Kokusai Hotel, 1803 rare earth hi tech Zone, the Inner Mongolia Autonomous Region, Baotou Patentee after: Inner Mongolia North control thermal power Co., Ltd Address before: 014010 rare earth Kokusai Hotel, 1803 rare earth hi tech Zone, the Inner Mongolia Autonomous Region, Baotou Patentee before: INNER MONGOLIA JUNENG HEAT ENERGY TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |