CN207132369U - One kind layering rotary regenerative air preheater tool - Google Patents

One kind layering rotary regenerative air preheater tool Download PDF

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Publication number
CN207132369U
CN207132369U CN201720844654.1U CN201720844654U CN207132369U CN 207132369 U CN207132369 U CN 207132369U CN 201720844654 U CN201720844654 U CN 201720844654U CN 207132369 U CN207132369 U CN 207132369U
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CN
China
Prior art keywords
soot blower
heat transfer
air preheater
transfer element
revolving structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720844654.1U
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Chinese (zh)
Inventor
益晓斌
李刚
马永辉
陈军
纪建荣
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SHAANXI HUADIAN YAOCHI POWER GENERATION CO Ltd
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SHAANXI HUADIAN YAOCHI POWER GENERATION CO Ltd
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Priority to CN201720844654.1U priority Critical patent/CN207132369U/en
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Publication of CN207132369U publication Critical patent/CN207132369U/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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Abstract

The utility model discloses one kind layering rotary regenerative air preheater tool, it is characterised in that：Including：Shell, the shell is the cavity structure of both ends open, the enclosure sets rotating shaft, wherein the side opening of shell one sets hot-blast outlet and gas approach, another side opening sets cold wind import and exhanst gas outlet, enclosure sets first order revolving structure and second level revolving structure, and wherein first order revolving structure is arranged at intervals with second level revolving structure；The shell is made up of the first shell and second housing, and the rotating shaft is fixedly connected with second housing, installs first order revolving structure in the rotating shaft and second level revolving structure, the rotating shaft are connected with motor.The utility model solve thes problems, such as that air preheater heat transfer element blocks.

Description

One kind layering rotary regenerative air preheater tool
Technical field
It the utility model is related to boiler technology field, and in particular to one kind layering rotary regenerative air preheater tool.
Background technology
With continuous improvement of the country to environmental requirement, boiler NOX (nitrogen oxides) discharge index is more and more lower, no matter adopt With SCR, or SNCR denitration mode, the formation of ABS (ammonium hydrogen sulfate) product thereafter can not be avoided.ABS products are in a constant temperature Can be condensed under degree, liquid can be condensed into by gaseous state less than less than 220 degrees Celsius, during less than 148 degrees Celsius can by settable liquid into Solid-state, many negative impacts are produced to the runnability of follow-up equipment.The equipment for being affected by it most serious is thereafter first Air preheater, especially rotary regenerative air preheater.Its why impacted maximum, it is because it is that gateway end is poor Very big heat transmission equipment.Its cigarette temperature side differential temperature degree groundwork is between 400~120 degree Celsius ranges.It is boiler reduction Exhaust gas temperature, improve to air temperature, realize the visual plant of energy-saving and emission-reduction.In this temperature range, also exactly denitration product ABS The process of solid-state purees is condensed into by gaseous state.A large amount of solid condensates are attached on air preheater with very high adhesion strength It is on heat transfer element on heat exchanger fin.Stick thickness to be continuously increased, the passage section of heat exchanger fin can be blocked, make flue and duct resistance Be continuously increased, influence boiler to wind and smoke evacuation.The lighter causes unit load down to run, severe one forced outage.
In order to solve the problems, such as this air preheater (abbreviation of air preheater) blocking, at present frequently with three kinds of approach Have：
1. by adjusting boiler combustion, optimize combustibility, reduce ABS as far as possible and produce.
2. by increasing the cross section of fluid channel in rotary regenerative air preheater heat transfer element, reduce flow passage resistance force of waterproof, strengthen cigarette wind Passing through property.Also it is using the third approach simultaneously, there is provided certain advantage.
3. using the method for mechanical sweeper, condensation is attached on the ABS of heat transfer element inner surface and be disposed of.
But, in practice it has proved that, three of the above approach effect is all very limited.One, boiler combustion adjustment optimize again, Also the generation of ABS coagulations can not fundamentally be prevented；The two, increases the runner of element, also just reduces heat transfer member simultaneously The surface area of part, it is unfavorable for exchanging heat, reduces wind-warm syndrome, exhaust gas temperature rise, sacrifices the certain economy of equipment；Three, return It is blocked up to turn air preheater element, it is difficult to be punched through, element internal can not use steam or height by the ABS goos sticked of interlude Pressure water is disposed online.
Based on above reason, the blockage problem of air preheater heat transfer element has become current generating plant pulverized coal boiler and is difficult to thoroughly The important problem solved.
Utility model content
Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided one kind layering Rotary regenerative air preheater has, and is that boiler reduces exhaust gas temperature, improves to air temperature, realize the visual plant of energy-saving and emission-reduction.This Invention can be fully adapted to the pulverized-coal fired boiler equipped with SCR denitration system, can replace traditional traditional swinging air preheat Device, solve the problems, such as heat transfer element frequent jams after pulverized-coal fired boiler denitration.
Technical scheme is used by the utility model solves its technical problem：
One kind layering rotary regenerative air preheater tool, including：Shell, the shell be both ends open cavity structure, institute State enclosure and rotating shaft is set, the wherein side opening of shell one sets hot-blast outlet and gas approach, and another side opening sets cold wind Import and exhanst gas outlet, enclosure set first order revolving structure and second level revolving structure, wherein first order revolving structure It is arranged at intervals with second level revolving structure；
The shell is made up of the first shell and second housing, and the rotating shaft is fixedly connected with second housing, the rotating shaft Upper installation first order revolving structure and second level revolving structure, the rotating shaft are connected with motor.
Further, the first order revolving structure includes：First heat transfer element, the first soot blower and the second soot blower； First soot blower and the second soot blower are separately positioned on the both sides of the first heat transfer element at hot-blast outlet；The second level Revolving structure includes：Second heat transfer element, the 3rd soot blower and the 4th soot blower；3rd soot blower and the 4th soot blower point The both sides for the second heat transfer element not being arranged at cold wind import.
Further, first soot blower, the second soot blower, the 3rd soot blower, the 4th soot blower are with venthole Ventilation duct, wherein the heat transfer element of open side face first of the venthole of the first soot blower, the second soot blower, the 3rd soot blowing Device, the 4th soot blower venthole the heat transfer element of open side face second.
Further, the thickness of first heat transfer element is less than or equal to the first soot blower and the soot blowing of the second soot blower is deep Spend sum.
Further, the thickness of second heat transfer element is less than or equal to the 3rd soot blower and the soot blowing of the 4th soot blower is deep Spend sum.
Further, the thickness sum of first heat transfer element and the second heat transfer element is more than or equal to 2.4m.
The beneficial effects of the utility model：
A kind of layering rotary regenerative air preheater provided by the utility model, is in traditional rotary regenerative air heater (tradition) Medium flow field is connected one layer of rotary regenerative air preheater again upwards, turns into layering rotary regenerative air preheater；Wherein it is layered swinging Each rotor thickness summation of air preheater is more than or equal to the gross thickness of former traditional air preheater, so that it is guaranteed that overall heat exchange efficiency does not reduce； It is layered the rotor thickness that each layer heat transfer element thickness of rotary regenerative air heater is less than traditional rotary regenerative air heater；It is every in the utility model Layer heat transfer element thickness is thinned relatively, improves the soot blowing efficiency for the soot blower that every layer of heat transfer element is matched somebody with somebody up and down, ensure that and blow Blowing through property of the grey device to heat transfer element；Meanwhile it is layered rotary regenerative air heater and is arranged more relative to traditional air preheater wherein discontinuity surface More effective soot blowers are possibly realized；Thus it is easy to directly directly purge the easy tamper for blocking section heat transfer element, Solve the problems, such as that air preheater heat transfer element blocks, stop fully to ensure that blocking does not occur during boiler operatiopn for air preheater Fortune provides advantage.In the case where not reducing heat exchange efficiency, the relative thickness (every layer of thickness) of rotor is thinned, Relatively reduce that the temperature end of traditional air preheater is poor, make " mushroom " deflection of air preheater reduce, so as to also reduce air leak rate of air curtain.
Brief description of the drawings
Fig. 1 be the utility model proposes a kind of layering rotary regenerative air preheater lamps structure schematic diagram.
Description of reference numerals：
1- shells, 2- rotating shafts, 3- first order revolving structures, 4- second level revolving structure；
The shells of 11- first, 12- second housings；
The heat transfer elements of 31- first, the soot blowers of 32- first, the soot blowers of 33- second；
The heat transfer elements of 41- second, the soot blowers of 42- the 3rd, the soot blowers of 43- the 4th.
Embodiment
Below in conjunction with the accompanying drawings and embodiment describes the utility model embodiment：
Referring to Fig. 1, be the utility model proposes a kind of layering rotary regenerative air preheater lamps structure schematic diagram.
As shown in figure 1, a kind of layering rotary regenerative air preheater tool, including：Shell 1, shell 1 are the cavity of both ends open Structure, the inside of shell 1 set rotating shaft 2, and the wherein side opening of shell 1 one sets hot-blast outlet a and gas approach b, another side opening Cold wind import c and exhanst gas outlet d is set, the inside of shell 1 sets first order revolving structure 3 and second level revolving structure 4, wherein the One-level revolving structure is arranged at intervals with second level revolving structure；
Shell 1 is made up of the first shell 11 and second housing 12, and rotating shaft 2 is fixedly connected with second housing 12, is pacified in rotating shaft 2 Dress first order revolving structure 3 and second level revolving structure 4, rotating shaft 2 are connected with motor；Motor rotational band turn axle makes First order revolving structure and second level revolving structure, which rotate, to be preheated.
A kind of layering rotary regenerative air preheater provided by the utility model, is in traditional rotary regenerative air heater (tradition) Medium flow field is connected one layer of rotary regenerative air preheater again upwards, turns into layering rotary regenerative air preheater；Wherein it is layered swinging Each rotor thickness summation of air preheater is more than or equal to the gross thickness of former traditional air preheater, so that it is guaranteed that overall heat exchange efficiency does not reduce； The rotor thickness that each layer heat transfer element thickness of rotary regenerative air heater is less than traditional rotary regenerative air heater is layered, specifically with soot blower Effective soot blowing depth is the thickness according to every layer of heat transfer element of design.
Whether layering rotary regenerative air heater provided by the utility model, distance and center between layers overlap, can With the specific design structure according to boiler, the deployment scenarios of flue are because arranging on ground.What is illustrated in this specification is a kind of center weight Close the layering rotary regenerative air preheater being cascaded.But the misaligned form in center can also be designed to, you can with arrangement In multiple positions of flue.
The layering rotary regenerative air heater of center superposition provided by the utility model, it can select to drive using a drive mechanism It is dynamic, more drive mechanisms can also be selected each self-driven；The misaligned every layer of drive mechanism of layering rotary regenerative air heater in center is only Erect meter.
First order revolving structure 3 includes：First heat transfer element 31, the first soot blower 32 and the second soot blower 33；Described One soot blower 32 and the second soot blower 33 are separately positioned on the both sides of the first heat transfer element 31 at hot-blast outlet；Described second Level revolving structure 4 includes：Second heat transfer element 41, the 3rd soot blower 42 and the 4th soot blower 43；The He of 3rd soot blower 42 4th soot blower 43 is separately positioned on the both sides of the second heat transfer element 41 at cold wind import.
In the utility model embodiment, the first soot blower, the second soot blower, the 3rd soot blower and the 4th soot blower are fixed and set Put on the first shell, one end of four soot blowers is connected by magnetic valve with air blower, and the other end enters through the first shell The side of the first heat transfer element and the second heat transfer element is arranged in cavity.
First soot blower 32, the second soot blower 33, the 3rd soot blower 42, the 4th soot blower 43 are the ventilation with venthole Pipe, wherein the first heat transfer element of open side face 31 of the venthole of the first soot blower 32, the second soot blower 33, the 3rd soot blower 42nd, the second heat transfer element of open side face 41 of the venthole of the 4th soot blower 43.By arranging that multiple soot blowers are used for disconnected Blocking concentration zones between face are purged, and are used directly for purging the tamper of mid-section.
The thickness of first heat transfer element 31 is less than or equal to the soot blowing depth sum of the first soot blower 32 and the second soot blower 33. The thickness of second heat transfer element 41 is less than or equal to the soot blowing depth sum of the 3rd soot blower 42 and the 4th soot blower 43.First heat transfer The thickness sum of the heat transfer element 41 of element 31 and second is more than or equal to 2.4m.
A kind of layering rotary regenerative air preheater tool provided by the utility model, every layer of heat transfer element thickness are thinned relatively, The soot blowing efficiency for the soot blower that every layer of heat transfer element is matched somebody with somebody up and down is improved, ensure that blowing through property of the soot blower to heat transfer element. Meanwhile it is layered rotary regenerative air heater and arranges that more effective soot blowers are possibly realized relative to traditional air preheater wherein discontinuity surface. Thus it is easy to directly directly purge the easy tamper for blocking section heat transfer element, efficiently solves air preheater heat transfer element The problem of blocking, advantage is provided fully to ensure that blocking stoppage in transit does not occur during boiler operatiopn for air preheater.
In the case where not reducing heat exchange efficiency, the relative thickness (every layer of thickness) of rotor is thinned, it is also relatively reduced The temperature end of traditional air preheater is poor, makes " mushroom " deflection of air preheater reduce, so as to also reduce air leak rate of air curtain.
The utility model preferred embodiment is explained in detail above in conjunction with accompanying drawing, but the utility model is not limited to Above-mentioned embodiment, in those of ordinary skill in the art's possessed knowledge, the utility model can also not departed from Made a variety of changes on the premise of objective.
Many other changes and remodeling can be made by not departing from spirit and scope of the present utility model.It should be appreciated that this reality Specific embodiment is not limited to new, the scope of the utility model is defined by the following claims.

Claims (6)

1. one kind layering rotary regenerative air preheater tool, it is characterised in that：Including：Shell, the shell are the sky of both ends open Cavity configuration, wherein a side opening sets hot-blast outlet and gas approach, another side opening sets cold wind import and exhanst gas outlet, institute State enclosure and first order revolving structure and second level revolving structure are set, wherein first order revolving structure is tied with second level revolution Structure is arranged at intervals；
The shell is made up of the first shell and second housing, and the enclosure sets rotating shaft, the rotating shaft and second housing It is fixedly connected, first order revolving structure is installed in the rotating shaft and second level revolving structure, the rotating shaft are connected with motor.
A kind of 2. layering rotary regenerative air preheater tool according to claim 1, it is characterised in that：The first order revolution Structure includes：First heat transfer element, the first soot blower and the second soot blower；First soot blower and the second soot blower are set respectively Put the both sides of the first heat transfer element at hot-blast outlet；The second level revolving structure includes：Second heat transfer element, the 3rd blow Grey device and the 4th soot blower；3rd soot blower and the 4th soot blower are separately positioned on the second heat transfer element at cold wind import Both sides.
A kind of 3. layering rotary regenerative air preheater tool according to claim 2, it is characterised in that：First soot blowing Device, the second soot blower, the 3rd soot blower, the 4th soot blower are the ventilation duct with venthole, wherein the first soot blower, second blowing The heat transfer element of open side face first of the venthole of grey device, the 3rd soot blower, the 4th soot blower venthole open side just To the second heat transfer element.
A kind of 4. layering rotary regenerative air preheater tool according to claim 2, it is characterised in that：The first heat transfer member The thickness of part is less than or equal to the soot blowing depth sum of the first soot blower and the second soot blower.
A kind of 5. layering rotary regenerative air preheater tool according to claim 2, it is characterised in that：The second heat transfer member The thickness of part is less than or equal to the soot blowing depth sum of the 3rd soot blower and the 4th soot blower.
A kind of 6. layering rotary regenerative air preheater tool according to claim 2, it is characterised in that：The first heat transfer member The thickness sum of part and the second heat transfer element is more than or equal to 2.4m.
CN201720844654.1U 2017-07-12 2017-07-12 One kind layering rotary regenerative air preheater tool Expired - Fee Related CN207132369U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720844654.1U CN207132369U (en) 2017-07-12 2017-07-12 One kind layering rotary regenerative air preheater tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720844654.1U CN207132369U (en) 2017-07-12 2017-07-12 One kind layering rotary regenerative air preheater tool

Publications (1)

Publication Number Publication Date
CN207132369U true CN207132369U (en) 2018-03-23

Family

ID=61634249

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720844654.1U Expired - Fee Related CN207132369U (en) 2017-07-12 2017-07-12 One kind layering rotary regenerative air preheater tool

Country Status (1)

Country Link
CN (1) CN207132369U (en)

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20180323

Termination date: 20190712