CN205299489U - Cold grey ware of diaphragm type wall - Google Patents
Cold grey ware of diaphragm type wall Download PDFInfo
- Publication number
- CN205299489U CN205299489U CN201520927428.0U CN201520927428U CN205299489U CN 205299489 U CN205299489 U CN 205299489U CN 201520927428 U CN201520927428 U CN 201520927428U CN 205299489 U CN205299489 U CN 205299489U
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- Prior art keywords
- ash
- membrane wall
- cooling
- wall device
- connects
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Abstract
The utility model relates to a cold grey ware of diaphragm type wall, including the cold grey ware of diaphragm type wall body, this body contains the piping that is met and formed by extended surface tube and steel pipe, and the wet return is established in the piping outside, there is annular arrangement inside including the snakelike bank of tubes of the crisscross first bank of tubes that sets up with the second bank of tubes, the next part case is connected to the piping lower extreme, and the water inlet that gets into end one side at the ash material is established in the connection of next part case, connects on the piping and goes up the header tank, goes up water collection tank connection wet return upper end, and the connection of wet return lower extreme is the ring canal down, and lower ring canal is established ties with the snakelike bank of tubes, and upward ring canal, the union coupling delivery port of fitting with a contraceptive ring are connected to the coiled pipe discharge mouth of a river, ash material discharge end has ash material restrictor plate, and the ash material gets into the end and is equipped with ash material water conservancy diversion awl. The utility model discloses the pressurized ability is stronger, and heat transfer area is bigger, can fully absorb the heat of the thin ash of returning charge ware exhaust, makes returning charge ash thermal drop discharge the requirement to safe, has improved the cooling water availability factor, has increased the thermal rate of recovery of thin ash on the basis that reduces the cooling water yield.
Description
Technical field
This utility model belongs to Circulating Fluidized Bed Boiler Equipment technical field, is specifically related to a kind of membrane wall device for cooling ash.
Background technology
CFBB is a kind of efficient, low stain, the cleaning burning type boiler that develop rapidly in recent years, what adopt is advanced desulfuration in furnace technique, by recirculating fluidized bed low-temperature burning, achieve effective elimination of sulfide and nitrogen oxides, thus greatly reducing the discharge of pollutant in flue gas. Material returning device is the important component part of CFBB, and Main Function is that the high-temp solid material separated by boiler separator is stably sent back in combustor.
At present, most of CFBB does not install device for cooling ash under material returning device, when normal operation of boiler, presses than bed conveniently and stable boiler load to maintain, and the gray back amount of material returning device needs constantly to adjust. Along with the continuous increase of boiler capacity, the gray back discharge capacity of material returning device is also on the increase, and so many hot ash is not only stacked nowhere, even if there being local stack but so high temperature ash is also extremely dangerous and can cause the secondary pollution of environment; The more important thing is, itself there is substantial amounts of heat energy in high temperature ash, owing to not reclaiming, it is impossible to by his use of this partial heat energy, causing heat-energy losses, this and energy-conserving and environment-protective principle are contrary.
In addition, also CFB boiler is had to be mounted with jacket type device for cooling ash under material returning device, namely the cooling cylinder of device for cooling ash is made up of inside and outside two-layer cylinder, cooling water it is connected with between cylinder, the cavity of inner barrel is fine ash passage, but this type of device for cooling ash is limited with the contact area of cooling water due to fine ash, and it is shorter in the inner barrel time of staying, namely fine ash major part flows directly out not past well cooling in inner barrel, therefore the temperature drop of fine ash is extremely limited, it is impossible to reach the purpose of fine ash safety dumping. And because the cylinder compression capability of jacket type device for cooling ash is limited, it is impossible to directly adopt steam turbine to condense water as cooling water, it is necessary to setting up a road DW system demineralized water system as cooling source, this adds the expense of power plant undoubtedly.
Utility model content
The purpose of this utility model is in that to solve above-mentioned technical problem and provide a kind of membrane wall device for cooling ash.
For achieving the above object, this utility model adopts the following technical scheme that
A kind of membrane wall device for cooling ash, the membrane wall device for cooling ash body that there is conical section including discharge end and the sealing lid being connected with the ash material upstream end of described membrane wall device for cooling ash body; The described lid that seals connects the expansion bellow for absorbing the boiler return feeder thermal expansion amount when boiler operatiopn, and described membrane wall device for cooling ash body ash material discharge end is provided with the electric lock pneumatic batcher for realizing ash material uniform discharge; Described membrane wall device for cooling ash body includes the piping formed by extended surface tube and steel pipe assembly welding, sets return pipe, there is the snake-like tube row of annular configuration inside outside described piping; Described snake-like tube row includes the first bank of tubes and the second bank of tubes that are crisscross arranged, the lower end of described piping connects lower header, described lower header connects the water inlet being located at described ash material upstream end side, the upper end of described piping connects upper condensate sump, described upper condensate sump connects back to the upper end of water pipe, the lower end of described return pipe connects lower endless tube, described lower endless tube is in series with described snake-like tube row and connects, the outlet of described snake-like tube row connects upper endless tube, and described upper endless tube connects the outlet being located at described ash material discharge end side; Described ash material discharge end has ash material current limiting plate, and described ash material upstream end is provided with the dispersed ash material deflection cone to piping wall of ash material for entering.
The discharge end of described electric lock pneumatic batcher is provided with the manual inserting plate door for realizing ash material discharging on-off control.
Described ash material current limiting plate is an orifice plate.
Described membrane wall device for cooling ash body is provided with the fittable slackening device for being installed on mounting platform by described membrane wall device for cooling ash body.
Described fittable slackening device includes bearing, and described bearing connects column, and described bearing and column are welded on described membrane wall device for cooling ash body.
The ash material approaching side of described expansion bellow is provided with high temperature cut-off valve.
Described high temperature cut-off valve is manual high temperature cut-off valve.
This utility model membrane wall device for cooling ash, owing to heat exchange cylinder is membrane wall structure, compression capability is higher, heat exchange area is bigger, the heat of the fine ash that material returning device is discharged can be fully absorbed, make returning charge ash temperature drop to safety dumping requirement, improve the service efficiency of cooling water simultaneously, reduce the response rate adding fine ash heat on the basis of cooling water inflow.
Accompanying drawing explanation
Fig. 1 show the structural representation of a kind of membrane wall device for cooling ash that this utility model embodiment provides;
Fig. 2 show the structural representation of membrane wall device for cooling ash body;
Fig. 3 show the P direction view of Fig. 2;
Fig. 4 show the line B-B profile of Fig. 3;
Fig. 5 show the line C-C profile of Fig. 4;
Fig. 6 show the structural representation of ash material current limiting plate.
Detailed description of the invention
Below, in conjunction with example, substantive distinguishing features of the present utility model and advantage are further described, but this utility model is not limited to listed embodiment.
Refer to shown in Fig. 1 ~ 6, a kind of membrane wall device for cooling ash, there is including discharge end the membrane wall device for cooling ash body 4 of conical section and the sealing lid 3 being connected with the ash material upstream end of described membrane wall device for cooling ash body, be used for sealing fine ash; The described lid that seals connects expansion bellow 2, and for absorbing the boiler return feeder thermal expansion amount when boiler operatiopn, described membrane wall device for cooling ash body ash material discharge end is provided with electric lock pneumatic batcher 5, is used for realizing ash material uniform discharge; Described membrane wall device for cooling ash body includes the piping 43 formed by extended surface tube 431 and steel pipe 432 assembly welding, and the outside of described piping 43 sets return pipe 42, there is the snake-like tube row of annular configuration inside;Described snake-like tube row includes the first bank of tubes 48 and the second bank of tubes 49 being crisscross arranged, the lower end of described piping 43 connects and connects the lower header 50 being located at membrane wall device for cooling ash body lower end, described lower header 50 is connected to be located at the water inlet 44 of described ash material upstream end side, the upper end of described piping 43 connects the upper condensate sump 52 being located at membrane wall device for cooling ash body upper end, described upper condensate sump 52 connects back to the upper end of water pipe 42, the lower end of described return pipe 42 connects the lower endless tube 45 being located at membrane wall device for cooling ash body lower end, described lower endless tube 45 is in series with described snake-like tube row and connects, the outlet of described snake-like tube row connects upper endless tube 41, described upper ring 42 pipe connects the outlet 47 being located at described ash material discharge end side, described ash material discharge end is namely in membrane wall device for cooling ash body lower end, there is ash material current limiting plate 46, described ash material upstream end, namely in membrane wall device for cooling ash body upper end, it is provided with ash material deflection cone 9, dispersed to piping wall for the ash material that will enter, it is to avoid lime-ash is assembled, make fine ash and barrel be fully contacted, improve heat transfer rate.
It should be noted that described extended surface tube 431 and steel pipe 432 welding form cylinder and the cone section of described membrane wall device for cooling ash, because caliber is less, therefore voltage endurance capability is strong, and when barrel dliameter is equal, arc length launch after must greater than the girth of plate cylinder, so heat exchange area can be significantly increased.
Concrete, described extended surface tube 431 is 36, described first bank of tubes 48 is 8 groups, described second bank of tubes 49 is 4 groups, interlaced arrangement, concrete layout is such that described second bank of tubes 49 and is circular layout in crosswise, described first bank of tubes 48 is 8 groups, it is evenly arranged in the interval region of two adjacent groups bank of tubes of described second bank of tubes 49, two described first bank of tubes 48 of each layout in four interval regions, comparatively speaking, described first bank of tubes 48 is little bank of tubes to two kinds of bank of tubes, and described second bank of tubes 49 is big bank of tubes.
Described electric lock pneumatic batcher 5 can realize the uniform discharge of fine ash, concrete, and the discharge end of described electric lock pneumatic batcher 5 is provided with the manual inserting plate door 6 for realizing ash material discharging on-off control, and manual inserting plate door 6 is in order to switch the discharging of fine ash.
Concrete, as shown in Figure 6, described ash material current limiting plate is an orifice plate, described orifice plate has multiple hole being circular layout, the form and dimension in described hole is set with specific reference to the effect of current limliting, its perforate size and device for cooling ash exert oneself and fine ash granularity is relevant, according to device for cooling ash exert oneself and fine ash granularity carries out specific design.
Concrete, described membrane wall device for cooling ash body is provided with the fittable slackening device for being installed on mounting platform by described membrane wall device for cooling ash body.
Wherein, described fittable slackening device includes bearing 7, and described bearing 7 connects column 8, and described bearing and column are welded on described membrane wall device for cooling ash body 4, described bearing 7 is welded on membrane wall device for cooling ash body 4, and is arranged on mounting platform by device for cooling ash by column 8.
Further, the ash material approaching side of described expansion bellow 2 is provided with high temperature cut-off valve 1.
Preferably, described high temperature cut-off valve 1 is manual high temperature cut-off valve, and high temperature cut-off valve 1 is in order to control to enter the fine ash amount of device for cooling ash.
It should be noted that in this utility model, mentioned number of tubes and bank of tubes quantity can also design according to actual needs accordingly, number of tubes this described and bank of tubes quantity are not limited as by this utility model.
As shown in figures 1 to 6, when material returning device puts ash, fine ash is guided by stainless steel tube, sequentially passes through high temperature cut-off valve 1, expansion bellow 2 enters membrane wall device for cooling ash body 4, disperses to surrounding, from up to down flow with about gravity under the effect of ash material deflection cone 9. cooling water is then entered lower header 50 by water inlet 44, and it is internal to enter piping 43 by the connection of steel pipe 432, cooling water finally collects in upper collecting chamber 52, and it is back in lower endless tube 45 by the return pipe 42 being arranged in outside piping, the first bank of tubes 48 due to lower endless tube 45 with inner barrel, second bank of tubes 49 is connected, cooling water enters back in bank of tubes and carries out lasting heat exchange with fine ash, second bank of tubes 49 and the first bank of tubes 48 interlaced arrangement, first bank of tubes fills the interval of the second bank of tubes, so it is not only convenient for making, and fine ash is played peptizaiton by size bank of tubes, prevent fine ash localized clusters, constantly update the heat-transfer surface of fine ash and pipe, improve heat transfer effect.
Owing to described bank of tubes is snake-like tube row, simmered system by steel pipe to form, and steel pipe both sides are welded with fin, heat exchange area is added in limited space, cooling water in final bank of tubes is collected in upper endless tube 41 and is connected with boiler blow-down water pipeline by outlet 47, by the heat recovery of fine ash to steam generator system.
The flow direction of the cooling water of twice heat exchange is bottom-up, contrary with the flow direction of fine ash, plays the good result of heat convection. Flow through to ash material current limiting plate after fine ash is cooled, because its metering function makes the circulation of fine ash be substantially reduced, so fine ash above can be played reduction of speed effect, extend fine ash heat-exchange time in device for cooling ash, and the reduction of flowing velocity also reduces fine ash to device for cooling ash and upstream device, such as electric lock pneumatic batcher 5, the washing away of manual inserting plate door 6, reduce equipment attrition, the fine ash even feeding by electric lock pneumatic batcher 5, is ultimately discharged into subordinate's conveying equipment.
Compared with prior art, this utility model has following technical effect that
1, membrane wall device for cooling ash cylinder is owing to being membrane wall structure, when barrel dliameter is equal, the arc length of pipe launch after must greater than the girth of plate cylinder, so for existing interlayer cylinder, heat exchange area can be increased;
2, membrane wall device for cooling ash cylinder is formed by extended surface tube annular assembly welding, and because its caliber is little, therefore its bearing capacity is higher, steam turbine can be adopted to condense water directly as cooling water, and tube wall is thin, and heat exchange resistance is less, improves the exchange capability of heat of device for cooling ash;
3, cooling down water in membrane wall device for cooling ash through twice heat exchange, especially the cooling water in bank of tubes is directly embedded in fine ash, improves the utilization rate of cooling water, makes device for cooling ash more economize on water;
4, device for cooling ash bank of tubes divides size two kinds, and is coil structure, and pipe both sides are welded with fin extension heat exchange area, and size bank of tubes interval is arranged, eliminates the dead angle that fine ash is assembled, is effectively increased heat exchange efficiency;
5, device for cooling ash is additionally arranged at the bottom of current limiting plate, not only can extend fine ash heat-exchange time in device for cooling ash, more decrease fine ash washing away equipment, extend service life of equipment;
6, by the layout to water route, make fine ash and the heat exchange cooling down water be always Convection states, also improve heat exchange efficiency.
Although reference be made herein to this utility model is described by multiple explanatory embodiment of the present utility model, but, should be appreciated that, those skilled in the art can be designed that a lot of other amendments and embodiment, and these amendments and embodiment will drop within spirit disclosed in the present application and spirit.
More specifically, disclosure, drawings and claims scope in, it is possible to building block and/or layout to theme composite configuration carry out multiple modification and improvement.Except the modification that building block and/or layout are carried out and improvement, to those skilled in the art, other purposes also will be apparent from.
Claims (7)
1. a membrane wall device for cooling ash, it is characterised in that include the membrane wall device for cooling ash body that discharge end has conical section and the sealing lid being connected with the ash material upstream end of described membrane wall device for cooling ash body; The described lid that seals connects the expansion bellow for absorbing the boiler return feeder thermal expansion amount when boiler operatiopn, and described membrane wall device for cooling ash body ash material discharge end is provided with the electric lock pneumatic batcher for realizing ash material uniform discharge; Described membrane wall device for cooling ash body includes the piping formed by extended surface tube and steel pipe assembly welding, sets return pipe, there is the snake-like tube row of annular configuration inside outside described piping; Described snake-like tube row includes the first bank of tubes and the second bank of tubes that are crisscross arranged, the lower end of described piping connects lower header, described lower header connects the water inlet being located at described ash material upstream end side, the upper end of described piping connects upper condensate sump, described upper condensate sump connects back to the upper end of water pipe, the lower end of described return pipe connects lower endless tube, described lower endless tube is in series with described snake-like tube row and connects, the outlet of described snake-like tube row connects upper endless tube, and described upper endless tube connects the outlet being located at described ash material discharge end side; Described ash material discharge end has ash material current limiting plate, and described ash material upstream end is provided with the dispersed ash material deflection cone to piping wall of ash material for entering.
2. membrane wall device for cooling ash as claimed in claim 1, it is characterised in that the discharge end of described electric lock pneumatic batcher is provided with the manual inserting plate door for realizing ash material discharging on-off control.
3. membrane wall device for cooling ash as claimed in claim 1 or 2, it is characterised in that described ash material current limiting plate is an orifice plate.
4. membrane wall device for cooling ash as claimed in claim 3, it is characterised in that described membrane wall device for cooling ash body is provided with the fittable slackening device for being installed on mounting platform by described membrane wall device for cooling ash body.
5. membrane wall device for cooling ash as claimed in claim 4, it is characterised in that described fittable slackening device includes bearing, and described bearing connects column, and described bearing and column are welded on described membrane wall device for cooling ash body.
6. membrane wall device for cooling ash as described in claim 1 or 5, it is characterised in that the ash material approaching side of described expansion bellow is provided with high temperature cut-off valve.
7. membrane wall device for cooling ash as claimed in claim 6, it is characterised in that described high temperature cut-off valve is manual high temperature cut-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520927428.0U CN205299489U (en) | 2015-11-20 | 2015-11-20 | Cold grey ware of diaphragm type wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520927428.0U CN205299489U (en) | 2015-11-20 | 2015-11-20 | Cold grey ware of diaphragm type wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205299489U true CN205299489U (en) | 2016-06-08 |
Family
ID=56461059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520927428.0U Expired - Fee Related CN205299489U (en) | 2015-11-20 | 2015-11-20 | Cold grey ware of diaphragm type wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205299489U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830750A (en) * | 2017-09-27 | 2018-03-23 | 兰州兰石集团有限公司 | Coal gasifier ash-dregs cooler |
-
2015
- 2015-11-20 CN CN201520927428.0U patent/CN205299489U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830750A (en) * | 2017-09-27 | 2018-03-23 | 兰州兰石集团有限公司 | Coal gasifier ash-dregs cooler |
| CN107830750B (en) * | 2017-09-27 | 2019-12-27 | 兰州兰石集团有限公司 | Ash cooler for coal gasification furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20211120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |