CN208418684U - Low-low-temperature economizer system capable of preventing ash blockage - Google Patents
Low-low-temperature economizer system capable of preventing ash blockage Download PDFInfo
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- CN208418684U CN208418684U CN201820924656.6U CN201820924656U CN208418684U CN 208418684 U CN208418684 U CN 208418684U CN 201820924656 U CN201820924656 U CN 201820924656U CN 208418684 U CN208418684 U CN 208418684U
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- heat exchanger
- curved baffle
- low
- baffle group
- exhaust gases
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000003546 flue gas Substances 0.000 claims abstract description 35
- 230000008676 import Effects 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000008859 change Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 52
- 230000000903 blocking effect Effects 0.000 claims description 15
- 239000012716 precipitator Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003517 fume Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 230000008021 deposition Effects 0.000 abstract 2
- 239000000428 dust Substances 0.000 description 15
- 238000013517 stratification Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000004071 soot Substances 0.000 description 4
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- Chimneys And Flues (AREA)
Abstract
The utility model provides a can prevent low temperature economizer system of stifled ash, through the position of the arc baffle group of regular transform Y type flue upper portion and lower part to change the flue gas import direction of heat exchanger, change the leeward side of the easy deposition of heat exchanger calandria into the windward side, can not only effectively prevent heat exchanger calandria deposition, but also play the effect of water conservancy diversion to the flue gas, prevent heat exchanger local wear. The system and the working method have simple and firm structure and can effectively solve the problem of low-temperature economizers.
Description
Technical field
The utility model belongs to low low-level (stack-gas) economizer systems technology field, in particular to a kind of low temperature that can prevent from blocking up ash
Economizer system.
Background technique
As the anxiety of electricity coal supply and the situation of AND ENERGY RESOURCES CONSUMPTION IN CHINA are further severe, country is to energy saving for power plants consumption reduction
It is required that stringenter.Low low-level (stack-gas) economizer is set in forecooler outlet and electric precipitator entrance, smoke evacuation can be effectively reduced
Temperature, Mist heat recovering have good energy-saving benefit, while to improve deduster operational efficiency, reaching more environmentally-friendly
Flue gas emission is horizontal.
Since low low-level (stack-gas) economizer is installed on electric precipitator inlet, the soot dust granule content in flue gas is high, be easy to cause
Dust stratification on the comb of low low-level (stack-gas) economizer.The low serious dust stratification of low-level (stack-gas) economizer, not only results in heat exchange efficiency and sharply declines, and
And it is uneven to will cause interior flow field, and comb is galled, until scrapping.
By the discovery of observation dust stratification position, the position of dust stratification is predominantly located at the leeward of comb on heat exchanger comb, and meets
It wind face will not dust stratification.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the purpose of this utility model is to provide one kind can prevent the low of stifled ash
Low-level (stack-gas) economizer system, the system are changed windward side and the leeward of heat exchanger by rotation, can not only efficiently solve product
Grey problem, and prevent flue gas heat exchanging device from causing concentrated wear.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of low low-level (stack-gas) economizer system for preventing from blocking up ash, including the heat exchanger 3 being arranged in exhaust gases passes, heat exchanger
3 left and right ends are installed on exhaust gases passes side wall, and upper and lower side is flue gas medium entrance, and heat exchanger 3 is located in exhaust gases passes
Top be arranged curved baffle group 1, lower section be arranged curved baffle group 29, curved baffle group 1 close exhaust gases passes roof with
Channel between 3 top of heat exchanger, curved baffle group 29 close the channel between exhaust gases passes bottom surface and 3 bottom of heat exchanger,
The horizontal rotation central axis one 5 vertical with exhaust gases passes, flue gas is arranged in channel between exhaust gases passes roof and 3 top of heat exchanger
The horizontal rotation central axis two 10 vertical with exhaust gases passes, the arc is arranged in channel between passage bottom and 3 bottom of heat exchanger
Shape baffle group 1 can be rotated around Pivot axle 1, and the curved baffle group 29 can be 2 10 turns around Pivot axle
Dynamic, the rotation of curved baffle group 1 and curved baffle group 29 is so that the two is in that positive S type or anti-S type, realization are changed on the whole
Hot device 3 switches flue gas medium entrance in upper and lower side.
The exhaust gases passes include import Y type channel 1 and outlet Y type channel 2, the serrated end in import Y type channel 1 be into
Mouthful, the serrated end in outlet Y type channel 2 is outlet, and expansion end and the outlet Y type channel 2 in import Y type channel 1 is arranged in heat exchanger 3
Expansion end between center up and down, flue gas from import Y type channel 1 enter, through heat exchanger 3 heat exchange after, by export Y type
Channel 2 is discharged, and is sent into electric precipitator.
The angular dimension range in the import Y type channel 1 and outlet Y type channel 2 is 50 ° < θ < 70 °.
The curved baffle group 1 is identical with the structure of curved baffle group 29, is made of several pieces of curved baffles, most
Big one piece plays sealing fume, changes the flow direction of flue gas；Remaining plays water conservancy diversion flue gas, promotes heat exchanger
The even flow field of 3 entrances, prevents concentrated wear.
It states in curved baffle group 1, every piece of curved baffle passes through ribs and is fixed in Pivot axle 1, described
In curved baffle group 29, every piece of curved baffle passes through ribs and is fixed in Pivot axle 2 10, makes curved baffle group
Interior curved baffle can be unified to surround respective central axis rotation.
On the bottom surface of the exhaust gases passes, positioned at the underface of heat exchanger 3, it is provided with the grey ash bucket 6 of collection, it is entire for collecting
The collection ash of system.
Water side ducts 7 are provided in the heat exchanger 3, water side ducts 7 are arranged along the left and right directions of heat exchanger 3, with flue gas
Direction is vertical, and water horizontally enters into heat exchanger 3 by water side ducts 7.
The working method of the low low-level (stack-gas) economizer system for preventing from blocking up ash, passes through rotation arc baffle group 1 and arc
Shape baffle group 29 switches the two between positive S type and anti-S type on the whole, using the top and bottom rotation of heat exchanger 3 as windward
Face and leeward.Due to directly operating to curved baffle group, change in pressure drop is small, therefore does not influence to influence the normal life of power plant
Produce operation.By the way of periodically rotation arc baffle group, then soot dust granule is not easy to assemble on economizer 3.
The curved baffle group 1 and curved baffle group 29 can be controlled by external motor to be rotated.
Compared with prior art, the utility model has the beneficial effects that
1, two groups of curved baffle groups in lower channel can be rotated rotating around Pivot axle, area in curved baffle group
Maximum baffle can play the role of closure to Y shape flue, to change the flow direction of flue gas in heat exchanger, by heat exchanger
The leeward that dust stratification is easy on comb is changed into windward side, and the dust stratification on comb is blown off.
2, the baffle in curved baffle group also plays water conservancy diversion to flue gas, keeps heat exchanger import flow of flue gas uniform, prevents
Only wear.
Detailed description of the invention
Fig. 1 is low one schematic diagram of low-level (stack-gas) economizer working state of system of the utility model figure.
Fig. 2 is the section view in Fig. 1 in the middle part of it.
Fig. 3 is low two schematic diagram of low-level (stack-gas) economizer working state of system of the utility model figure.
Fig. 4 is the low low-level (stack-gas) economizer system comb dust stratification schematic diagram of the utility model figure.
Arrow indicates flow of flue gas direction in each figure.
Specific embodiment
The embodiments of the present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the utility model one kind can prevent from blocking up the low low-level (stack-gas) economizer system of ash, flue gas
Using import Y type channel 1 and outlet Y type channel 2, import Y type channel 1 and the angular dimension range for exporting Y type channel 2 are equal in channel
For 50 ° < θ < 70 °.The serrated end in import Y type channel 1 is import, and the serrated end in outlet Y type channel 2 is outlet, heat exchanger 3 or so
Both ends are installed on exhaust gases passes side wall, specifically may be provided at the expansion end in import Y type channel 1 and the expansion end in outlet Y type channel 2
Between center up and down, flue gas from import Y type channel 1 enter, through heat exchanger 3 heat exchange after, by export 2 row of Y type channel
Out, it is sent into electric precipitator.
On the bottom surface of exhaust gases passes, positioned at the underface of heat exchanger 3, it is provided with the grey ash bucket 6 of collection, for collecting entire system
The collection ash of system.
Water side ducts 7 are provided in heat exchanger 3, water side ducts 7 are arranged along the left and right directions of heat exchanger 3, with flue gas side
To vertical, water horizontally enters into heat exchanger 3 by water side ducts 7.
The upper and lower side of heat exchanger 3 is planar structure, and flue gas entrance is located at heat exchanger in upper and lower side in exhaust gases passes
Curved baffle group 1 is arranged in 3 top, and curved baffle group 29 is arranged in lower section, and curved baffle group 1 closes exhaust gases passes roof
With the channel between 3 top of heat exchanger, curved baffle group 29 closes the channel between exhaust gases passes bottom surface and 3 bottom of heat exchanger,
The horizontal rotation central axis one 5 vertical with exhaust gases passes, flue gas is arranged in channel between exhaust gases passes roof and 3 top of heat exchanger
The horizontal rotation central axis two 10 vertical with exhaust gases passes, arc gear is arranged in channel between passage bottom and 3 bottom of heat exchanger
Board group 1 can be rotated around Pivot axle 1, and curved baffle group 29 can be rotated around Pivot axle 2 10, curved baffle
So that the two is in positive S type or anti-S type on the whole, realization 3 flue gas of heat exchanger is situated between for the rotation of group 1 and curved baffle group 29
Matter entrance switches in upper and lower side.That is, when positive S type, bottom in and top out, when anti-S type, upper entering and lower leaving.
Pivot axle 1 and horizontal rotation central axis 2 10 are connected to exhaust gases passes side wall by bearing.Arc gear
Board group 1 is identical with the structure of curved baffle group 29, is made of 5~15 pieces of curved baffles, and maximum one piece is played sealing fume
Effect, change the flow direction of flue gas；Remaining plays water conservancy diversion flue gas, promotes the even flow field of 3 entrance of heat exchanger,
Prevent concentrated wear.Every piece of curved baffle passes through ribs and is fixed in Pivot axle, makes the arc in curved baffle group
Baffle can be unified to surround respective central axis rotation.
The working method that can prevent from blocking up the low low-level (stack-gas) economizer system of ash, is kept off by rotation arc baffle group 1 and arc
Board group 29 both makes to switch between positive S type and anti-S type on the whole, using the top and bottom rotation of heat exchanger 3 as windward side with
Leeward.
Specifically, referring to Fig.1, in working condition a period of time, curved baffle group 1 and curved baffle group 29 are in anti-S type, by
In the sealing of baffle group and the effect of water conservancy diversion, by forecooler Lai flue gas enter heat exchanger from the upper channel in import Y type channel 1
3, the comb of heat exchanger 3 is flowed through from top to bottom, then again from the lower channel outflow in outlet Y type channel 2, into electric precipitator.
System after one a period of time of working condition, will conversion curved baffle group 1 and curved baffle group 29 rotating around
Pivot axle rotation, makes it in positive S type, and change is in working condition two form.
Referring to Fig. 3, in working condition two, curved baffle group 1 and curved baffle group 29 are in positive S type, due to baffle group
Sealing and water conservancy diversion effect, from forecooler come flue gas enter heat exchanger 3 from the lower channel in import Y type channel 1, from top to bottom
The comb of heat exchanger 3 is flowed through, then again from the upper channel outflow in outlet Y type channel 2, into electric precipitator.
After curved baffle group 1 and curved baffle group 29 operate a period of time in positive serpentine, change curved baffle group
Direction makes it in reversed S-shape, runs identical a period of time, whole process is a cycle.
Curved baffle group 1 and curved baffle group 29 can be controlled by external motor to be rotated.
Fig. 4 is comb dust stratification schematic diagram, and soot dust granule content is higher from the flue gas 11 that forecooler comes, the windward side of comb
Due to being washed away by incoming flow flue gas, so being not easy dust stratification；And the leeward of comb, since flue gas flow rate is low, and due to
The reason of vortex street, is easier to aggregation soot dust granule 12, accumulates over a long period, and can become cement-like material, directly block economizer.It should
System is by the method for operation of alternately rotation, and leeward by easy dust stratification changes into windward side, so as to effectively prevent from blocking up
Dead phenomenon occurs.
Claims (8)
1. one kind can prevent from blocking up the low low-level (stack-gas) economizer system of ash, including the heat exchanger (3) being arranged in exhaust gases passes, heat exchanger
(3) left and right ends are installed on exhaust gases passes side wall, and upper and lower side is flue gas medium entrance, which is characterized in that in exhaust gases passes
In be located at heat exchanger (3) top be arranged curved baffle group one (4), lower section be arranged curved baffle group two (9), curved baffle group one
(4) channel between at the top of exhaust gases passes roof and heat exchanger (3) is closed, curved baffle group two (9) closes exhaust gases passes bottom surface
Channel setting and exhaust gases passes with the channel between heat exchanger (3) bottom, between exhaust gases passes roof and heat exchanger (3) top
Vertical horizontal rotation central axis one (5), channel setting and exhaust gases passes between exhaust gases passes bottom surface and heat exchanger (3) bottom
Vertical horizontal rotation central axis two (10), the curved baffle group one (4) can rotate around Pivot axle one (5), described
Curved baffle group two (9) can be rotated around Pivot axle two (10), curved baffle group one (4) and curved baffle group two (9)
So that the two is in positive S type or anti-S type on the whole, realization heat exchanger (3) switches flue gas medium entrance in upper and lower side for rotation.
2. can prevent from blocking up the low low-level (stack-gas) economizer system of ash according to claim 1, which is characterized in that the exhaust gases passes packet
Import Y type channel (1) and outlet Y type channel (2) are included, the serrated end in import Y type channel (1) is import, is exported Y type channel (2)
Serrated end be outlet, heat exchanger (3) be arranged import Y type channel (1) expansion end and outlet Y type channel (2) expansion end
Between center up and down, flue gas from import Y type channel (1) enter, through heat exchanger (3) heat exchange after, by export Y type channel
(2) it is discharged, is sent into electric precipitator.
3. can prevent from blocking up the low low-level (stack-gas) economizer system of ash according to claim 2, which is characterized in that the import Y type is logical
Road (1) and the angular dimension range for exporting Y type channel (2) are 50 ° < θ < 70 °.
4. can prevent from blocking up the low low-level (stack-gas) economizer system of ash according to claim 1, which is characterized in that the curved baffle group
One (4) are identical with the structure of curved baffle group two (9), are made of several pieces of curved baffles, and maximum one piece is played sealing fume
Effect, change the flow direction of flue gas；Remaining plays water conservancy diversion flue gas, promotes the flow field of heat exchanger (3) entrance equal
It is even, prevent concentrated wear.
5. can prevent from blocking up the low low-level (stack-gas) economizer system of ash according to claim 4, which is characterized in that the curved baffle group
In one (4), every piece of curved baffle passes through ribs and is fixed in Pivot axle one (5), the curved baffle group two (9)
In, every piece of curved baffle passes through ribs and is fixed in Pivot axle two (10), makes the curved baffle in curved baffle group
It can unify to surround respective central axis rotation.
6. can prevent from blocking up the low low-level (stack-gas) economizer system of ash according to claim 1, which is characterized in that the exhaust gases passes
On bottom surface, it is located at the underface of heat exchanger (3), is provided with the grey ash bucket (6) of collection, for collects the collection ash of whole system.
7. can prevent from blocking up the low low-level (stack-gas) economizer system of ash according to claim 1, which is characterized in that the heat exchanger (3)
In be provided with water side ducts (7), water side ducts (7) along heat exchanger (3) left and right directions arrange, it is vertical with flue gas direction, water by
Water side ducts (7) horizontally enter into heat exchanger (3).
8. can prevent from blocking up the low low-level (stack-gas) economizer system of ash according to claim 1, which is characterized in that the heat exchanger (3)
Upper and lower side be planar structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820924656.6U CN208418684U (en) | 2018-06-14 | 2018-06-14 | Low-low-temperature economizer system capable of preventing ash blockage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820924656.6U CN208418684U (en) | 2018-06-14 | 2018-06-14 | Low-low-temperature economizer system capable of preventing ash blockage |
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| Publication Number | Publication Date |
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| CN208418684U true CN208418684U (en) | 2019-01-22 |
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| CN201820924656.6U Active CN208418684U (en) | 2018-06-14 | 2018-06-14 | Low-low-temperature economizer system capable of preventing ash blockage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613163A (en) * | 2018-06-14 | 2018-10-02 | 华能国际电力股份有限公司 | Low-low-temperature economizer system capable of preventing ash blockage and working method thereof |
-
2018
- 2018-06-14 CN CN201820924656.6U patent/CN208418684U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613163A (en) * | 2018-06-14 | 2018-10-02 | 华能国际电力股份有限公司 | Low-low-temperature economizer system capable of preventing ash blockage and working method thereof |
| CN108613163B (en) * | 2018-06-14 | 2023-05-30 | 华能国际电力股份有限公司 | Low-low-temperature economizer system capable of preventing ash blocking and working method thereof |
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