CN106322353A - Plate type low-temperature economizer - Google Patents
Plate type low-temperature economizer Download PDFInfo
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- CN106322353A CN106322353A CN201510391003.7A CN201510391003A CN106322353A CN 106322353 A CN106322353 A CN 106322353A CN 201510391003 A CN201510391003 A CN 201510391003A CN 106322353 A CN106322353 A CN 106322353A
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- low
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Abstract
The invention discloses a plate type low-temperature economizer. The economizer comprises a casing, a convergence box and a plate type heat exchange module; a smoke inlet channel and a smoke discharge channel are arranged at the upper end and the lower end of the casing; the smoke inlet channel comprises an inlet flange and a conical smoke inlet guiding barrel; the smoke discharge channel comprises an outlet flange and a conical smoke discharge guiding barrel; and the plate type heat exchange module comprises multiple heat exchange plates, flue supporting bulges and cold source channel supporting bulges are arranged on two sides of the heat exchange plates, cold source medium baffle runners are formed among the cold source channel supporting bulges of the adjacent heat exchange plates, and comprise multiple circumferential channels provided with independent medium inlets and outlets and pass partition plates arranged in the circumferential channels to enable cold source media to flow in a baffled manner, and discharged smoke once-through channels are formed among the flue supporting bulges of the adjacent heat exchange plates. Flow fields in the economizer are uniformly distributed, the medium contact area is large, the heat exchange efficiency is high, the smoke discharge resistance is small, meanwhile, spaces between the heat exchange plates are easy to clean and maintain, and the capability of the heat exchange plates for bearing pressure differences on the two sides is high.
Description
Technical field
The present invention relates to boiler smoke reclaimer technical field, particularly relate to a kind of board-like low temperature and save coal
Device.
Background technology
The too high cycle efficieny that can affect boiler efficiency and power plant of exhaust gas temperature of boiler, increases
Coal-fired usage amount.In order to solve to discharge the problem of flue-gas temperature too high waste heat energy, a lot of power plant
Economizer is set in flue, utilizes economizer the temperature of flue gas to be reclaimed；Current power station pot
The economizer that stove is used is mostly based on tubular type, fin tube type, flue gas and cooling water pipeline table
Face contact realizes heat exchange, and contact area is little, and heat exchange stroke is long, and smoke evacuation pressure drop is big, and due to
Flue gas and heat exchanger tube are perpendicular contact, and smoke evacuation resistance is big, hold the lee face of cooling water pipeline and stagnant
Stay the easy dust stratification in district, be difficult to clear up；
In prior art, patent CN104033881 discloses a kind of shell-and-plate economizer, this province
Coal device uses corrugated plate dst structure heat exchange core body to carry out exhaust heat recovery, can well the row of solution
The problem that cigarette resistance is big, but this patent has the disadvantage in that 1. lack gas approach guide frame,
Flue gas Flow Field Distribution in heat exchange core body is uneven, and in heat exchange core body, effective heat exchange area is little,
The most overheated and surfusion, reduces thermal performance；2. formed between two heat exchanger plates of discharge flue
Lacking support, owing to smoke evacuation is passed through for normal pressure, low-temperature receiver medium is that malleation is passed through, and makees in pressure differential
Under with, the heat exchanger plates forming low-temperature receiver medium channel is easily torn disengaging, and heat exchange core body two ends lack
Seal structure less, be easily generated media of both sides and mix, economizer operational failure.
Summary of the invention
The technical problem to be solved is, overcomes the deficiencies in the prior art, it is provided that one
Plant compact conformation, the smoke evacuation board-like low temperature that resistance is little, cleaning is convenient, reliable and heat exchange efficiency is high
Economizer.
The board-like low-level (stack-gas) economizer of one of the present invention is to be achieved by the following technical programs, its bag
Include:
Housing, its upper and lower end is provided with fume inlet passage and discharge flue, fume inlet passage by suction flange and
Enter cigarette guide cylinder constitute, discharge flue by outlet(discharge) flange and smoke evacuation guide cylinder constitute, enter cigarette guide cylinder and
The inwall of smoke evacuation guide cylinder is provided with leads cigarette gradient；
The header box connected with housing, it is respectively arranged at two ends with low-temperature receiver import and low-temperature receiver outlet；
And it being positioned at the board-like heat exchange module of enclosure interior, its one end is connected with header box, board-like heat
Exchange module includes several being parallel to the evenly distributed heat exchanger plates in direction of discharging fume, and the both sides of heat exchanger plates are respectively
Being provided with flue support protrusion and low-temperature receiver road support protrusion, the low-temperature receiver road support protrusion of adjacent heat exchanger plates offsets
By or the board plane of low-temperature receiver road support protrusion and heat exchanger plates lean, and connect formation and connect low-temperature receiver import
The low-temperature receiver medium folding Cheng Liudao of the sealing with low-temperature receiver outlet, low-temperature receiver medium folding Cheng Liudao include several having
Circumferential passageway that standalone media is imported and exported and make low-temperature receiver medium circumferentially passage in being arranged on circumferential passageway
The reciprocal pass partition rolling over Cheng Liudong, forms smoke evacuation once between the flue support protrusion of adjacent heat exchanger plates
Flow through passage.
Further, pass partition is at least one, and the folding number of passes of low-temperature receiver medium folding Cheng Liudao is even number,
Header box is positioned at housing side, and is internally provided with dividing plate, and dividing plate will completely cut off in header box and low-temperature receiver
The inlet distribution district of inlet communication and the outlet doab with low-temperature receiver outlet.
Or further, pass partition is at least one, the folding number of passes of low-temperature receiver medium folding Cheng Liudao is
Odd number, header box is made up of two housing parts being positioned at housing both sides.
Preferably, low-temperature receiver road support protrusion and flue support protrusion are that punching press ripple is protruding, weld muscle or plate
Muscle.
Further, it is provided with elastomer, elastomer between the other end and the housing of board-like heat exchange module
For spring or rubber.
Or further, between the other end and the housing of board-like heat exchange module, it is provided with flexible board, soft
Property plate include one-body molded formed card be against the L-shaped backup plate on board-like heat exchange module end angle and housing
Side is adjacent to the fixed plate of location and connects L-shaped backup plate and the bending bent plate of fixed plate.
The invention has the beneficial effects as follows:
1. smoke evacuation is by under the guide effect entering cigarette guide cylinder of taper, flows in board-like heat exchange module
Field distribution is uniform, prevents the phenomenon of weighing apparatus uneven in temperature, improves heat exchange efficiency；
2. smoke evacuation carries out many journeys interlock countercurrent flow with low-temperature receiver medium in heat exchange module, and medium contacts
Area is big, and therefore, heat exchange stroke can shorten largely, and heat exchanger plates is parallel to smoke evacuation and flows to arrange,
Smoke evacuation resistance is little, meanwhile, is prone to clear up and safeguard between heat exchanger plates；
3. heat exchanger plates is respectively provided on two sides with support protrusion, not only can form low-temperature receiver medium and discharge flue,
Also can improve heat exchanger plates simultaneously and bear the ability of pressure at both sides difference, prevent heat exchanger plates from deforming the sealing caused
The problem lost efficacy, and board-like heat exchange module is originally as a mould that can independently realize sealing heat exchange
Block, is not required to be formed with housing side seal, and therefore, longtime running is reliable, and is prone to carry out modularity
Assemble.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of flexible board in Fig. 1；
Fig. 3 is the countercurrent flow pattern schematic diagram of the heat exchanger plates pair of the present invention；
Fig. 4 is the forward flow pattern schematic diagram of the heat exchanger plates pair of the present invention.
In figure: 1. housing, the most board-like heat exchange module, 21. heat exchanger plates pair, 211. pass partitions,
212. circumferential passageways, 213. flue support protrusion, 214. low-temperature receiver road support protrusion, 3. discharge flue,
31. outlet(discharge) flanges, 32. smoke evacuation guide cylinder, 4. fume inlet passages, 41. suction flanges, 42. enter cigarette leads
To cylinder, 5. header box, 51. low-temperature receiver imports, 52. entrance doabs, 53. dividing plates, 54. outlets are confluxed
District, 55. low-temperature receiver outlets, 56. header box cover plate, 6. flexible boards, 61. fixed plates, 62. bending songs
Plate, 63.L shape backup plate；
A: smoke evacuation, B: low-temperature receiver medium (can be the liquid that the coefficients of heat transfer such as water, coolant or oil are high).
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below
In conjunction with accompanying drawing and most preferred embodiment, the present invention is described in further detail.
As Figure 1-3, the board-like low-level (stack-gas) economizer of one of the present invention, comprising:
Housing 1, its upper and lower end is provided with fume inlet passage 4 and discharge flue 3, and fume inlet passage 4 is by entering
Mouthful flange 41 and enter cigarette guide cylinder 42 and constitute, discharge flue 3 is guided by outlet(discharge) flange 31 and smoke evacuation
Cylinder 32 is constituted, and enters the inwall of cigarette guide cylinder 42 and smoke evacuation guide cylinder 32 and is provided with and leads cigarette gradient, such as Fig. 1
Shown in, enter cigarette guide cylinder 42 and smoke evacuation guide cylinder 32 can be the end, round mouth side shape have tapering housing or
Taper barrel housing；It is additionally provided with pull bar or lacing wire (not shown) on the upper and lower side port of housing 1 simultaneously,
For fixing and spacing board-like heat exchange module 2；
The header box 5 connected with housing 1, it is respectively arranged at two ends with low-temperature receiver import 51 and low-temperature receiver outlet
55；
And it is positioned at the board-like heat exchange module 2 in the middle part of housing 1, its one end is connected with header box 5,
Board-like heat exchange module 2 includes several being parallel to the evenly distributed heat exchanger plates in direction of discharging fume, heat exchanger plates
It is respectively provided on two sides with flue support protrusion 213 and low-temperature receiver road support protrusion 214, adjacent heat exchanger plates cold
Road, source support protrusion 214 leans, or low-temperature receiver road support protrusion 214 on a heat exchanger plates and another
Heat exchanger plates upper plate plane leans, and connect formed connection low-temperature receiver import 51 and low-temperature receiver outlet 55 close
Envelope low-temperature receiver medium folding Cheng Liudao, low-temperature receiver medium folding Cheng Liudao include several have standalone media import and export
Circumferential passageway 212 and make low-temperature receiver medium circumferentially passage 212 reciprocal in being arranged on circumferential passageway 212
The pass partition 211 of folding Cheng Liudong, forms smoke evacuation between the flue support protrusion 213 of adjacent heat exchanger plates
Once-through passage, flue support protrusion 213 can connect by abutting contact relatively, it is possible to flue supports convex
Play 213 to lean with the board plane of heat exchanger plates and contact connections, prevent flatulence of heat type from deforming, discharge fume and low-temperature receiver Jie
Mass flow is to being mutually perpendicular to, and carries out heat exchange in staggered adverse current in flowing through board-like heat exchange module 2；
Wherein circumferential passageway 212 is divided into import and export passage and folding Cheng Tongdao by pass partition 211.Turnover
Mouth channel width can be identical with folding journey channel width, it is also possible to different.Each journey channel width can be identical,
Can also be different.Folding number of passes and every journey channel width can be adjusted as required；
Low-temperature receiver road, both sides support protrusion 214 He forming circumferential passageway 212 after two heat exchanger plates overlappings
Low-temperature receiver road support protrusion 214 as pass partition 211 carries out electric resistance welding or bonding connection, circumference
Passage 212 both sides sequential welding, pass partition 211 can be pressed into contact with connection, sequential welding, intermittent weld
Or multiple spot welding, form inside and there is the heat exchanger plates of sealing many journeys folding Cheng Liudao to 21；Heat exchanger plates is to 21
In low-temperature receiver pressure medium more than heat exchanger plates to the smoke evacuation pressure between 21；Heat exchanger plates is between 21
Flue support protrusion 213 abut or flue support protrusion 213 and board plane against, formed with
Smoke evacuation flows to parallel smoke evacuation once-through passage；Low-temperature receiver road support protrusion 214 and flue support protrusion
213, weldering muscle protruding for punching press ripple or plate muscle, low-temperature receiver road support protrusion 214 and flue support protrusion
213 is symmetrically or non-symmetrically, and i.e. the protruding degree of depth of heat exchanger plates both sides can be equal, it is possible to；Protruding
Can be various corrugated form, low-temperature receiver road support protrusion 214 and flue support protrusion 213 not only can be formed
Low-temperature receiver medium and discharge flue 3, also can improve heat exchanger plates simultaneously and bear the ability of pressure at both sides difference, anti-
The only problem of the seal failure that heat exchanger plates deformation causes, and board-like heat exchange module 2 can as one
The independent module realizing sealing heat exchange, is not required to be formed with housing 1 side seal, therefore, transports for a long time
Row is reliable, it is easy to carry out modularization assembling and large-scale production；
Heat exchanger plates can use carbon steel, rustless steel, titanium and alloy thereof, nickel and nickel-base alloy thereof or other steel
Planting or non-ferrous metal, its temperature resistant range is at-196～1200 DEG C.
Therefore, the board-like low-level (stack-gas) economizer of this invention compared with prior art, discharge fume entering by taper
Under the guide effect of cigarette guide cylinder 42, it is evenly distributed at board-like heat exchange module 2 flow field, prevents
There is the phenomenon of weighing apparatus uneven in temperature, improve heat exchange efficiency；Discharge fume in heat exchange module and low-temperature receiver medium
Carrying out many journeys to interlock countercurrent flow, medium contact area is big, and therefore, heat exchange stroke can contract largely
Short, heat exchanger plates be parallel to smoke evacuation flow to arrange, smoke evacuation resistance little, meanwhile, be prone between heat exchanger plates into
Row cleaning and maintenance；Heat exchanger plates is respectively provided on two sides with support protrusion, not only can form low-temperature receiver medium and row
Cigarette channel 3, also can improve heat exchanger plates simultaneously and bear the ability of pressure at both sides difference.
Pass partition 211 at least one in this example, the folding number of passes of low-temperature receiver medium folding Cheng Liudao is even number,
Low-temperature receiver medium is imported and exported with on one side, and header box 5 is positioned at housing 1 side, compact conformation, is confluxing
The side of case 5 also can be provided with dismountable header box cover plate 56, it is simple to clears up and overhaul board-like heat exchange
Runner in module 2, header box 5 is internal is provided with dividing plate 53, and dividing plate 53 is by isolation in header box 5
Become the inlet distribution district connected with low-temperature receiver import 51 and the outlet doab connected with low-temperature receiver outlet 55
54；When pass partition 211 is even number, medium just completes odd-times folding journey in circumferential passageway 212,
Medium is imported and exported in different edge, and turnover flow direction is identical, and header box 5 is by being positioned at housing 1 both sides
Two housing parts 1 form..
As it is shown on figure 3, when second medium is reverse flow, plate package poststack, vertical direction is made
For smoke evacuation import and export passage, i.e. discharge fume by enter cigarette guide cylinder 42 guide from top enter, once flow
Crossing plate, from flowing out below, low-temperature receiver medium transverse reciprocating folding Cheng Liudong, below side, the first journey is led to
Road junction enters, and after repeatedly rolling over journey, above side, the first journey passway is flowed out, i.e. low-temperature receiver turnover
For reverse flow；Certainly both flow directions can also be inverted, with the flow direction the former described for
Preferably.
As shown in Figure 4, when low-temperature receiver medium is for forward flowing, plate package poststack, vertical direction is made
For smoke evacuation import and export passage, i.e. discharge fume by enter cigarette guide cylinder 42 guide from top enter, once flow
Crossing plate, from flowing out below, low-temperature receiver medium transverse reciprocating folding Cheng Liudong, below side one end first
Journey passway enters, and after repeatedly rolling over journey, above the side other end, the first journey passway is flowed out,
I.e. low-temperature receiver medium passes in and out as forward to flow；Certainly both flow directions can also be inverted.
In this example, the other end of board-like heat exchange module 2 and housing 1 are for flexibly connecting, when being heated,
Each heat transfer plate in board-like heat exchange module 2 expands deformation, and mutual extruding easily occurs seal failure
Mixing with dielectric leakage, the effect of economizer was lost efficacy, the other end of board-like heat exchange module 2 and housing
Presetting plastic deformation space between 1, absorb flatulence of heat type deformation, improve the condenser life-span, flexibly connecting can
Realizing by being provided with elastomer between the other end and the housing 1 of board-like heat exchange module 2, elastomer is
Spring or rubber, it is possible to by arranging flexibility between the other end and the housing 1 of board-like heat exchange module 2
Plate 6 realizes, as in figure 2 it is shown, flexible board 6 includes that one-body molded formation card is against board-like heat exchange mould
Organize the L-shaped backup plate 63 on 2 end angles be adjacent to the fixed plate 61 of location with housing 1 side and be connected
The bending bent plate 62 of L-shaped backup plate 63 and fixed plate 61.
The above is only the preferred embodiment of the present invention, it is noted that for the art
For those of ordinary skill, under the premise without departing from the principles of the invention, it is also possible to make some improvement
And retouching, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. a board-like low-level (stack-gas) economizer, it is characterised in that including:
Housing (1), its upper and lower end is provided with fume inlet passage (4) and discharge flue (3), enters cigarette and leads to
Road (4) is by suction flange (41) and enters cigarette guide cylinder (42) and constitutes, and discharge flue (3) is by going out
Mouth flange (31) and smoke evacuation guide cylinder (32) are constituted, and enter cigarette guide cylinder (42) and smoke evacuation guide cylinder
(32) inwall is provided with leads cigarette gradient；
The header box (5) connected with housing (1), its be respectively arranged at two ends with low-temperature receiver import (51) and
Low-temperature receiver outlet (55)；
And it is positioned at the board-like heat exchange module (2) that housing (1) is internal, its one end and header box (5)
Connecting, board-like heat exchange module (2) includes several being parallel to the evenly distributed heat exchanger plates in direction of discharging fume,
Heat exchanger plates be respectively provided on two sides with flue support protrusion (213) and low-temperature receiver road support protrusion (214),
Low-temperature receiver road support protrusion (214) of adjacent heat exchanger plates lean or low-temperature receiver road support protrusion (214) with
The board plane of heat exchanger plates leans and connects, and forms connection low-temperature receiver import (51) and low-temperature receiver outlet (55)
The low-temperature receiver medium folding Cheng Liudao, low-temperature receiver medium folding Cheng Liudao of sealing include several there is standalone media entering
The circumferential passageway (212) of outlet and make low-temperature receiver medium circumferentially lead in being arranged on circumferential passageway (212)
The pass partition (211) of Cheng Liudong, the flue support protrusion of adjacent heat exchanger plates are back and forth rolled in road (212)
(213) smoke evacuation once-through passage is formed between.
The board-like low-level (stack-gas) economizer of one the most according to claim 1, it is characterised in that described point
At least one, journey dividing plate (211), the folding number of passes of described low-temperature receiver medium folding Cheng Liudao is even number, institute
State header box (5) and be positioned at housing (1) side, and be internally provided with dividing plate (53), dividing plate (53)
The inlet distribution district connected with low-temperature receiver import (51) will be completely cut off into and with cold in described header box (5)
The outlet doab (54) that source outlet (55) connects.
The board-like low-level (stack-gas) economizer of one the most according to claim 1, it is characterised in that described point
At least one, journey dividing plate (211), the folding number of passes of described low-temperature receiver medium folding Cheng Liudao is odd number, institute
State header box (5) to be made up of two housing parts (1) being positioned at housing (1) both sides.
4. according to the board-like low-level (stack-gas) economizer of the one described in claim 1, it is characterised in that described
Low-temperature receiver road support protrusion (214) and flue support protrusion (213) are that punching press ripple is protruding, weldering muscle or
Plate muscle.
The board-like low-level (stack-gas) economizer of one the most according to any one of claim 1 to 4, its feature
It is, between the other end and the housing (1) of described board-like heat exchange module (2), is provided with elastomer,
Described elastomer is spring or rubber.
The board-like low-level (stack-gas) economizer of one the most according to any one of claim 1 to 4, its feature
It is, between the other end and the housing (1) of described board-like heat exchange module (2), is provided with flexible board (6),
Described flexible board (6) includes that one-body molded formation card is against on board-like heat exchange module (2) end angle
L-shaped backup plate (63) is adjacent to the fixed plate (61) of location and is connected L-shaped with housing (1) side
The bending bent plate (62) of backup plate (63) and fixed plate (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510391003.7A CN106322353A (en) | 2015-07-06 | 2015-07-06 | Plate type low-temperature economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510391003.7A CN106322353A (en) | 2015-07-06 | 2015-07-06 | Plate type low-temperature economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106322353A true CN106322353A (en) | 2017-01-11 |
Family
ID=57727399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510391003.7A Pending CN106322353A (en) | 2015-07-06 | 2015-07-06 | Plate type low-temperature economizer |
Country Status (1)
| Country | Link |
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| CN (1) | CN106322353A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607539A (en) * | 2021-07-19 | 2021-11-05 | 上海航天精密机械研究所 | Blocking prevention device and method for heat flow sensor in static heating test of ablation test piece |
| CN110220400B (en) * | 2019-05-17 | 2024-03-29 | 天津华赛尔传热设备有限公司 | All-welded plate type gas-gas heat exchanger |
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| CN204829863U (en) * | 2015-07-06 | 2015-12-02 | 天津华赛尔传热设备有限公司 | Board -like low -level (stack -gas) economizer |
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| US5330624A (en) * | 1991-12-27 | 1994-07-19 | Phillips Petroleum Company | Fractionator-reboiler sludge removal system and method |
| CN101319855A (en) * | 2007-06-05 | 2008-12-10 | 沈阳市金鑫冷暖设备制造安装有限公司 | Plate-type heat recovery heat exchanger |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220400B (en) * | 2019-05-17 | 2024-03-29 | 天津华赛尔传热设备有限公司 | All-welded plate type gas-gas heat exchanger |
| CN113607539A (en) * | 2021-07-19 | 2021-11-05 | 上海航天精密机械研究所 | Blocking prevention device and method for heat flow sensor in static heating test of ablation test piece |
| CN113607539B (en) * | 2021-07-19 | 2023-07-14 | 上海航天精密机械研究所 | Anti-blocking device and method for heat flow sensor of static heating test of ablation test piece |
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Application publication date: 20170111 |