CN206310476U - A kind of replaceable waste heat recovery apparatus of heat exchange module - Google Patents
A kind of replaceable waste heat recovery apparatus of heat exchange module Download PDFInfo
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- CN206310476U CN206310476U CN201621416495.7U CN201621416495U CN206310476U CN 206310476 U CN206310476 U CN 206310476U CN 201621416495 U CN201621416495 U CN 201621416495U CN 206310476 U CN206310476 U CN 206310476U
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- heat exchange
- orifice plate
- exchange module
- heat
- support orifice
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Abstract
The utility model discloses a kind of replaceable waste heat recovery apparatus of heat exchange module, including housing, at least two groups heat exchange modules are provided with housing, every group of heat exchange module includes heat-exchanging tube bundle, support orifice plate and guide rail for supporting heat-exchanging tube bundle, support orifice plate at least two in every group of heat exchange module, supported hole is offered on support orifice plate, heat exchanger tube in heat-exchanging tube bundle is fixed in supported hole, support orifice plate in every group of heat exchange module is fixed together by pull bar, support orifice plate bottom is provided with the roller for being rolled with guide rail and being coordinated, heat-exchanging tube bundle is provided with the exits and entrances valve positioned at hull outside, sealing plate is connected with by fastener on the position of rail end on housing, support orifice plate near sealing plate is provided with draw ring.In maintenance, the draw ring on one group of heat exchange module of pulling leakage integrally extracts the heat-exchanging tube bundle in this group of heat exchange module and support orifice plate out, then replaces with new heat-exchanging tube bundle and put into operation again by supporting orifice plate, fastener of screwing on.
Description
Technical field
The utility model is related to a kind of flue gas waste heat recovery equipment, the replaceable waste heat of specifically a kind of heat exchange module
Reclaimer, belongs to heat recovery technology field.
Background technology
Current boiler of power plant heat loss due to exhaust gas is of maximum in boiler heat loss, and large medium-size boiler is normally running
When, flue gas loss accounts for 5% to the 6% of boiler oil input heat；In the fossil-fired unit of China's active service, the smoke evacuation of boiler
Temperature is universal at 125 to 150 DEG C or so, and exhaust gas temperature often reduces by 15 DEG C~20 DEG C, so that it may improve boiler efficiency 1% or so.
Current smoke evacuation brings following adverse effect：
1st, amount of heat has been wasted, has caused boiler efficiency low, economic benefit is not high；
2nd, high fume temperature, dust specific resistance is raised, and the big flow velocity of flue gas volume is fast, and efficiency of dust collection is not high；
3rd, flue-gas temperature is high, and desulphurization system cooling injection flow rate increase, desulfurization operation cost increases.
To solve the above problems, install low additional before deduster（It is low）Warm economizer is an effective method, can generally be made
The exhaust gas temperature of boiler reduces by 30 to 40 DEG C again so that the flue-gas temperature into deduster is reduced to below acid dew point, general control
System is in 90 DEG C or so, killing three birds with one stone, first, the heat in having reclaimed flue gas, reduces gross coal consumption rate；Second, flue-gas temperature is dropped to
Below acid dew-point temperature, part of sulfuric acid gas is condensed into drop in flue gas, and this condensation of sulfuric acid liquid can wrap up flue dust in deduster
It is removed, while the low efficiency of dust collection for also improving deduster of cigarette temperature drop；Thirdly so that enter desulfurizing tower flue gas in sulfur acid into
Divide and reduce, improve desulfuration efficiency, reduce the consumption of desulphurization system water.
Be increased before deduster low（It is low）After warm economizer, although reached the effect of energy-conserving and environment-protective, but due to a, cigarette
Dustiness is very big in gas（Up to 20~40g/Nm3）, the abrasion of exchange heat pipe and dust stratification are very serious；B, through too low（It is low）Temperature saves coal
After device cooling, flue-gas temperature is had fallen to below acid dew point, and heat exchanger tube is in low-temperature corrosion region, after operation a period of time, changes
Heat pipe bundle can be different degrees of damage, or even leakage.Once it is low（It is low）There is leakage in warm economizer, although can cut off operation,
But energy regenerating effect certainly will be influenceed, if not processing the normal operation by boiler is influenceed.For during avoiding steam generator system from running
Occur low（It is low）Warm economizer leakage accident occurs, during every boiler shutdown is overhauled, it is necessary to exchange heat pipe bundle check and
Change.But because power plant is low（It is low）Warm economizer is more huge, and equipment is formed by stacking up and down by multiple heat exchange unit modules, therefore
There is a problem of how quickly and easily changing operational blocks which partition system.A kind of special heat exchanger structure of design is needed to meet with this for this
One demand, it is ensured that low（It is low）The operation of warm economizer system long-term safety.
The content of the invention
The purpose of this utility model is to provide a kind of heat exchange module replaceable waste heat recovery apparatus, can be in turn(a)round
Between quickly and easily change module, so as to ensure low（It is low）The operation of warm economizer system long-term safety.
The utility model is adopted the following technical scheme that：A kind of replaceable waste heat recovery apparatus of heat exchange module, including housing,
At least two groups heat exchange modules are provided with the housing, every group of heat exchange module is including heat-exchanging tube bundle, for supporting heat-exchanging tube bundle
Support orifice plate and guide rail, the support orifice plate at least two in every group of heat exchange module offer supported hole on support orifice plate, exchange heat
Heat exchanger tube in tube bank is fixed in the supported hole of support orifice plate, and the support orifice plate in every group of heat exchange module is fixed by pull bar and connected
It is connected together, support orifice plate bottom is provided with the roller for being rolled with guide rail and being coordinated, the heat-exchanging tube bundle is provided with positioned at hull outside
Imported valve and outlet valve, sealing plate is connected with by fastener on the position of rail end on the housing, lean on
The support orifice plate of nearly sealing plate is provided with draw ring.
Preferably, the dust cover being located above roller is provided between the support orifice plate and roller, dust cover section is
Circular arc.
Preferably, the quantity of every group of heat exchange module middle guide is four, and each support orifice plate bottom has difference
Four rollers for coordinating are rolled with four guide rails.
Preferably, the roller is made of the material of resistance to flue gas corrosion.
Preferably, the support orifice plate is linked together with pull bar by the way of welding.
Preferably, the pull bar is made of round steel or channel-section steel or square steel.
Preferably, the guide rail is made of channel-section steel or square steel or angle steel.
The beneficial effects of the utility model are：In normal operation, boiler tail flue gas enter in housing the utility model,
Flue gas is exchanged heat with the feedwater of tube side, and the flue gas after cooling enters subsequent technique into subsequent technique treatment after feed-water preheating.
When detecting a certain group of heat exchange module and leaking, this group of imported valve and outlet valve of the tube side of heat exchange module are closed,
So as to ensure that boiler is normally run without influence heat transfer effect.During boiler light maintenance only need to be waited until, the one group of heat exchange mould that will leak out
Fastener and sealing plate on block are unloaded, and pull the draw ring on support orifice plate, and heat-exchanging tube bundle edge is driven by roller support orifice plate
Guide rail is moved, so that the heat-exchanging tube bundle and support orifice plate and pull bar in this group of heat exchange module just can be extracted out integrally, is then changed again
Put into operation again by upper new heat-exchanging tube bundle and support orifice plate and pull bar, fastener of screwing on.Whole disassembly process is taken
Between it is very short.The utility model is low in prior art（It is low）In warm economizer design concept, change internal heat modular structure, make
Boiler of power plant is interior during light maintenance, so that it may very simply change heat exchange module tube bank, it is ensured that low（It is low）Warm economizer can be steady for a long time
Fixed operation.The utility model device structure is simple, highly versatile, it can be ensured that boiler of power plant reaches not only energy-conserving and environment-protective but also can be long-term
The advantage of stable operation.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 1；
Fig. 2 is the structural representation of heat exchange module in Fig. 1；
Fig. 3 is the structural representation of support orifice plate in Fig. 2；
Fig. 4 is the A-A views of Fig. 3；
Fig. 5 is the structural representation of the utility model embodiment 2；
Fig. 6 is the structural representation of heat exchange module in Fig. 5.
Specific embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1：
The structure of the utility model embodiment 1 as shown in Figures 1 to 4, the replaceable waste heat of the heat exchange module of the present embodiment
Reclaimer includes housing 1, and three groups of heat exchange modules 2 are provided with the housing 1 in the present embodiment, and every group of heat exchange module 2 includes changing
Heat pipe bundle 3, support orifice plate 4 and guide rail 5 for supporting heat-exchanging tube bundle, the support orifice plate 4 in every group of heat exchange module 2 are at least two
It is individual, supported hole is offered on support orifice plate 4, the heat exchanger tube in heat-exchanging tube bundle 3 is fixed in the supported hole of support orifice plate 4, every group
Support orifice plate in heat exchange module 2 is fixed together by pull bar 6, and support orifice plate 4 is connected with pull bar 6 by the way of welding
It is connected together.Support orifice plate 4 bottom is provided with the roller 7 for being rolled with guide rail 5 and being coordinated, and in the present embodiment, is led in every group of heat exchange module
The quantity of rail 5 is four, and each support orifice plate 4 bottom has four rollers 7 for being rolled with four guide rails 5 coordinate respectively, rolling
Post 7 is made of the material of resistance to flue gas corrosion.The heat-exchanging tube bundle 3 is provided with imported valve 81 and outlet outside housing 1
Valve 82, passes through fastener on the position of the end of guide rail 5 on the housing 1（9）Sealing plate 10 is connected with, near sealing plate
10 support orifice plate 4 is provided with draw ring 11.The dust cover being located above roller is provided between the support orifice plate 4 and roller 7
12, the section of dust cover 12 is circular arc.
The present embodiment is in the design and running of waste heat recovery apparatus, it is contemplated that operational effect and easy for installation,
Heat-exchanging tube bundle is divided into some groups of heat exchange modules and ensures that whole heat exchange area has certain allowance, it is ensured that heat transfer effect.Supported hole
Pull bar between plate selects the pull bar of different types according to heat-exchanging tube bundle size and weight, can be pipe or channel-section steel or side
Steel etc., guide rail selects the guide rail of different types according to tube bank size and weight, can be square steel or channel-section steel or angle steel etc., institute
State pull bar to be welded to connect with support orifice plate use, it is ensured that heat exchange module is linked to be a firm entirety, and the guide rail should be ensured that
Surface is smooth, resistance to flue gas corrosion, it is ensured that heat exchange module can smoothly be pulled out on guide rail.
The course of work of the present embodiment 1 is as follows：In normal operation, boiler tail flue gas enter in housing from bottom to top,
Flue gas is exchanged heat with the feedwater of tube side, and the flue gas after cooling enters subsequent technique into subsequent technique treatment after feed-water preheating.
When detecting a certain group of heat exchange module and leaking, this group of imported valve and outlet valve of the tube side of heat exchange module are closed,
So as to ensure that boiler is normally run without influence heat transfer effect.During boiler light maintenance only need to be waited until, the one group of heat exchange mould that will leak out
Fastener and sealing plate on block are unloaded, and pull the draw ring on support orifice plate, and heat-exchanging tube bundle edge is driven by roller support orifice plate
Guide rail is moved, so that the heat-exchanging tube bundle and support orifice plate in this group of heat exchange module just can be extracted out integrally, is then replaced with again new
Put into operation again by heat-exchanging tube bundle and support orifice plate, fastener of screwing on.It is very short the time required to whole disassembly process.
The utility model is low in prior art（It is low）In warm economizer design concept, only change internal heat modular structure,
Ensure that and change heat exchange module in a short time, so as to reach the maximization of steam generator system operation, reach long-term energy-conservation and subtract
The effect of row.
Embodiment 2：
The structure of the utility model embodiment 2 as shown in Figure 5 to Figure 6, the replaceable waste heat of the heat exchange module of the present embodiment
As different from Example 1, flue gas is to flow in the horizontal direction to reclaimer, its inner components title and use of the present embodiment
In the same manner as in Example 1 on the way, the course of work is also same as Example 1, therefore repeats no more.
Above-described embodiment is the utility model preferred embodiment, and in the other embodiments of the utility model, exchange heat mould
The quantity of block can be any amount more than two, be flexibly to select according to actual needs.Every group of heat exchange module middle guide
Quantity and each support orifice plate in roller quantity be also according to actual needs flexibly select.
Although being described in detail to implementation method of the present utility model in the embodiment above, this practicality is new
Type is not limited to above-mentioned implementation method, and the scope of the present utility model that appended claim is limited is replaced comprising all equivalent
Generation and change.
Claims (7)
1. a kind of replaceable waste heat recovery apparatus of heat exchange module, including housing（1）, it is characterised in that：The housing（1）Inside set
There are at least two groups heat exchange modules（2）, every group of heat exchange module（2）Include heat-exchanging tube bundle（3）, support for supporting heat-exchanging tube bundle
Orifice plate（4）And guide rail（5）, every group of heat exchange module（2）In support orifice plate（4）At least two, support orifice plate（4）On offer
Supported hole, heat-exchanging tube bundle（3）In heat exchanger tube be fixed on support orifice plate（4）Supported hole in, every group of heat exchange module（2）In branch
Support orifice plate passes through pull bar（6）It is fixed together, supports orifice plate（4）Bottom is provided with and guide rail（5）Roll the roller for coordinating
（7）, the heat-exchanging tube bundle（3）It is provided with positioned at housing（1）Outside imported valve（81）And outlet valve（82）, the housing
（1）It is upper to be close to guide rail（5）Pass through fastener on the position of end（9）It is connected with sealing plate（10）, near sealing plate（10）Branch
Support orifice plate（4）It is provided with draw ring（11）.
2. replaceable waste heat recovery apparatus of heat exchange module according to claim 1, it is characterised in that：The support orifice plate
（4）And roller（7）Between be provided with the dust cover being located above roller（12）, dust cover（12）Section is circular arc.
3. replaceable waste heat recovery apparatus of heat exchange module according to claim 1, it is characterised in that：Every group of heat exchange
Module middle guide（5）Quantity be four, each support orifice plate（4）Bottom have respectively with four guide rails（5）Roll and coordinate
Four rollers（7）.
4. the replaceable waste heat recovery apparatus of heat exchange module according to claim 1 or 2 or 3, it is characterised in that：The rolling
Post（7）It is made of the material of resistance to flue gas corrosion.
5. the replaceable waste heat recovery apparatus of heat exchange module according to claim 1 or 2 or 3, it is characterised in that：The branch
Support orifice plate（4）With pull bar（6）Linked together by the way of welding.
6. the replaceable waste heat recovery apparatus of heat exchange module according to claim 1 or 2 or 3, it is characterised in that：The drawing
Bar（6）It is made of round steel or channel-section steel or square steel.
7. the replaceable waste heat recovery apparatus of heat exchange module according to claim 1 or 2 or 3, it is characterised in that：It is described to lead
Rail（5）It is made of channel-section steel or square steel or angle steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621416495.7U CN206310476U (en) | 2016-12-22 | 2016-12-22 | A kind of replaceable waste heat recovery apparatus of heat exchange module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621416495.7U CN206310476U (en) | 2016-12-22 | 2016-12-22 | A kind of replaceable waste heat recovery apparatus of heat exchange module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206310476U true CN206310476U (en) | 2017-07-07 |
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ID=59245657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621416495.7U Active CN206310476U (en) | 2016-12-22 | 2016-12-22 | A kind of replaceable waste heat recovery apparatus of heat exchange module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206310476U (en) |
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2016
- 2016-12-22 CN CN201621416495.7U patent/CN206310476U/en active Active
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