CN205037287U - Resistant low temperature corrosion's enamel pipe low -level (stack -gas) economizer - Google Patents
Resistant low temperature corrosion's enamel pipe low -level (stack -gas) economizer Download PDFInfo
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- CN205037287U CN205037287U CN201520554698.1U CN201520554698U CN205037287U CN 205037287 U CN205037287 U CN 205037287U CN 201520554698 U CN201520554698 U CN 201520554698U CN 205037287 U CN205037287 U CN 205037287U
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Abstract
The utility model relates to a resistant low temperature corrosion's enamel pipe low -level (stack -gas) economizer, its characterized in that is connected side by side by a plurality of enamel pipe modules and constitutes, and each enamel pipe module includes the enamel heat exchange tube, receives the hot side to be the tubular product of enamel material promptly, still including the support frame that is used for supporting the enamel heat exchange tube, the support frame is provided with the connecting hole that is used for connecting the enamel heat exchange tube by constituting a plurality of backup pads, the perpendicular connection of a plurality of stay tube in the backup pad, be provided with annular slip cap in the connecting hole, the both ends of each enamel heat exchange tube module still are provided with young album of case of module business turn over. The heat exchange tube of this low -level (stack -gas) economizer is the enamel pipe, and corrosion effects is splendid, adopt the modular compound mode, be favorable to standardized production to, the module is from bearing structure, and the frame of module is the bearing structure of self heat exchange tube promptly, is again the bearing structure of upper portion module, thereby saves the installation of on -the -spot steel construction.
Description
Technical field
The utility model belongs to thermal power plant's heat transmission equipment, is specifically related to a kind of enamel pipe low-level (stack-gas) economizer of low temperature resistant corrosion.
Background technology
In recent years along with expanding economy, environmental problem is more and more outstanding, and for tackling increasingly serious atmosphere polluting problem, country has put into effect more strict atmosphere pollutants emission standards, thermal power plant, as coal-fired rich and influential family, becomes the control emission object of government and society all circles extensive concern.For meeting strict new nation's standard, install low-level (stack-gas) economizer and heat medium water tubular type flue gas heat-exchange unit (MGGH) in the flue of domestic fossil-fired unit one after another after boiler additional to improve the efficiency of unit and to reduce the discharge of pollutant.
Low-level (stack-gas) economizer is a kind of heat transmission equipment utilizing the waste-heat low pressure condensate water of boiler exhaust gas, by reducing exhaust gas temperature, improving the efficiency that the temperature of low pressure condensate water reclaims heat raising unit, and can improve the efficiency of dust collection of electrostatic precipitator.The entrance flue gas temperature of low-level (stack-gas) economizer is generally 120 DEG C-150 DEG C, and outlet temperature, usually at 85 DEG C-100 DEG C, owing to containing higher SO3 and water vapor component in boiler exhaust gas, can condense into sulfuric acid on the heat exchange tube wall that temperature is lower; Current low-level (stack-gas) economizer many employings carbon steel and 09CrCuSb(ND steel) as the material of heat exchanger tube, carbon steel to sulfuric acid corrosion without tolerance, although ND steel has the performance of certain sulfuric acid corrosion resistant, if but the condensation of long-term existence sulfuric acid droplet still can cause serious corrosion on tube wall, thus cause tube leak, have a strong impact on the service life of low-level (stack-gas) economizer.If the resistant material that employing 316L or 2205 etc. are high-grade, significantly cost of investment can be increased.For solving the etching problem of low-level (stack-gas) economizer and reducing cost of investment, our unit has succeeded in developing special enamel pipe for alternative ND steel pipe and 2205 two-way stainless steels, and serve good anticorrosion effect, economic benefit is obvious.In addition, existing low-level (stack-gas) economizer mostly is integral structure, for the unit application underaction of different size, different capabilities, can not combine at any time, apply dumb, installs inconvenience.
Summary of the invention
The etching problem of the utility model mainly for low-level (stack-gas) economizer and the problem of installation inconvenience, invented a kind of enamel pipe low-level (stack-gas) economizer of low temperature resistant corrosion, the heat exchanger tube of this low-level (stack-gas) economizer is enamel pipe, and anticorrosion effect is splendid; Meanwhile, this low-level (stack-gas) economizer have employed modular combination, is connected using enamel pipe module as unit, and the structure of each module is substantially identical, is namely conducive to standardized production, can be combined into again the economizer of different size according to the actual requirements; Further, each module is all provided with bracing frame, is self supporting structure, and namely the framework of module is the supporting construction of self heat exchanger tube, is again the supporting construction of upper module, thus saves the installation of on-the-spot steel construction; The enamel pipe of this economizer has unique structure through walls, and this structure can prevent enamel pipe scratching through during gripper shoe, can ensure that again enamel pipe slides freely.
Above-mentioned technical problem of the present utility model is implemented by the following technical programs: a kind of enamel pipe low-level (stack-gas) economizer of low temperature resistant corrosion, it is characterized in that, connected and composed side by side by some enamel pipe modules, each enamel pipe module comprises enamel heat exchanger tube, namely heating surface is the tubing of enamel material, also comprise the bracing frame for supporting enamel heat exchanger tube, support frame as described above is is vertically connected and composed by some gripper shoes, some stay pipes, gripper shoe being provided with the connecting hole for connecting enamel heat exchanger tube, in connecting hole, being provided with the slip cap of annular; The two ends of each enamel pipe module are also provided with module and pass in and out young header.
As preferably, described slip cap is by bearings, and one end of slip cap is connected to this bearing, and this bearing is fixed on gripper shoe.
As preferably, described slip cap is polytetrafluoroethylmaterial material; The effect that polytetrafluoroethylene (PTFE) sliding sleeve serves protection enamel pipe is set, enamel pipe is prevented causing scuffing through during gripper shoe, also can ensure that enamel pipe slides freely simultaneously.
As preferably, described enamel heat exchanger tube is arranged in snakelike, is provided with the enamel heat exchanger tube that some layers are snakelike in each enamel pipe module.The arrangement form of enamel pipe is determined according to the position of economizer, and time before economizer is arranged in electric cleaner, enamel pipe is in-line arrangement; Time after economizer is arranged in electric cleaner, enamel pipe can be in-line arrangement, also can for being staggered in arrangement.
As preferably, one end of described some layers of enamel heat exchanger tube arranges the little header of import, and the other end sets out young header.
As preferably, along flow of flue gas direction, be provided with high temperature section module group, middle-temperature section module group, low-temperature zone module group; Wherein, low-temperature zone module group is by enamel pipe module composition, and the heat exchanger tube in middle-temperature section module group and high temperature section module group adopts the low-temperature dew point corrosion of resistance to sulfuric acid steel (ND steel) or corrosion-resistant stainless steel material (316L).
In sum, the utility model compared with prior art tool have the following advantages:
The utility model modularized design, be conducive to standardized production and facilitate in-site installation: modular structure is self supporting structure, namely the framework of module is the supporting construction of self heat exchanger tube, it is again the supporting construction of upper module, thus saving the installation of on-the-spot steel construction, bracing frame is Steel material, and steel plate (gripper shoe) forms the channel structure of modular as support member, assembling is completed, to only needing module upwards to superpose in order during erecting bed to form module group in factory.
The utility model is provided with slip cap between gripper shoe and enamel pipe, has unique structure through walls, and this structure can prevent enamel pipe scratching through during gripper shoe, can ensure that again enamel pipe slides freely, and is convenient to assembling.
The utility model adopts segment design, high temperature section module group, middle-temperature section module group, low-temperature zone module group is divided into along flow of flue gas direction, the heat exchanger tube of different materials is set according to different temperature sections, makes the heat exchanger tube of not same material in the environment of correspondence, play optimum effect.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model;
Fig. 2 is side view of the present utility model;
Fig. 3 is the structural representation of the utility model enamel pipe module;
Fig. 4 is the schematic diagram of the utility model gripper shoe and heat exchanger tube connecting portion;
Fig. 5 is the utility model segmental structure schematic diagram.
Reference numeral: 1, enamel pipe module; 2, enamel heat exchanger tube; 3, gripper shoe; 4, stay pipe; 5, upper full skirt profile; 6, bearing; 7, the little header of import; 8, young header is gone out; 11, high temperature section module group; 12, middle-temperature section module group; 13, low-temperature zone module group.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment 1:
As shown in Figure 1, 2, a kind of enamel pipe low-level (stack-gas) economizer of low temperature resistant corrosion, is connected and composed side by side by multiple enamel pipe module 1.As shown in Figure 3, each enamel pipe module 1 comprises enamel heat exchanger tube 2, namely heating surface is the tubing of enamel material, enamel heat exchanger tube 2 is supported by bracing frame, bracing frame is Steel material, and bracing frame comprises at least three pieces of gripper shoes 3, and gripper shoe 3 parallel interval arranges, be fixedly connected with four stay pipes 4 respectively in the edge of gripper shoe 3, gripper shoe 3 is connected with stay pipe 4 is vertical.
Because module economizer have employed modularization, and structure is self supporting structure, and namely the framework of module is the supporting construction of self heat exchanger tube, is again the supporting construction of upper module, thus saves the installation of on-the-spot steel construction; Steel plate, steel pipe form the channel structure of modular as support member, in factory, complete assembling, and erecting bed only needs module upwards to superpose in order to form module group.
As described in Figure 4, each gripper shoe 3 is provided with multiple connecting hole, for connecting the connecting hole of enamel heat exchanger tube 2 in each connecting hole, the slip cap 5 of annular is provided with in connecting hole, described slip cap 5 is polytetrafluoroethylmaterial material, slip cap 5 is supported by bearing 6, and namely one end of slip cap 5 is connected to bearing 6, and bearing 6 is fixed on gripper shoe 3.Slip cap 5 can prevent enamel heat exchanger tube 2 scratching through during gripper shoe 3, can ensure that again enamel heat exchanger tube 2 slides freely, and is convenient to assembling.
Described enamel heat exchanger tube 2 is coiled pipe, is provided with the enamel heat exchanger tube 2 that multilayer is snakelike in each enamel pipe module 1; One end of multilayer enamel heat exchanger tube 2 connects the little header 7 of import, the little header 8 of other end connection outlet.
As shown in Figure 5, according to the actual requirements, the enamel pipe low-level (stack-gas) economizer of low temperature resistant corrosion can adopt subsection setup, namely along flow of flue gas direction, arranges high temperature section module group 11, middle-temperature section module group 12, low-temperature zone module group 13; Wherein, low-temperature zone module group 13 is made up of above-mentioned enamel pipe module 1, and the heat exchanger tube in middle-temperature section module group 12 and high temperature section module group 11 adopts the low-temperature dew point corrosion of resistance to sulfuric acid steel (ND steel) or corrosion-resistant stainless steel material (316L).
Modularized design, is convenient to standardized production; Meanwhile, the unit of different size can be combined into according to the demand of reality, flexible Application.
Specific embodiment described in literary composition is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (6)
1. the enamel pipe low-level (stack-gas) economizer of a low temperature resistant corrosion, it is characterized in that, connected and composed side by side by some enamel pipe modules, each enamel pipe module comprises enamel heat exchanger tube, namely heating surface is the tubing of enamel material, also comprises the bracing frame for supporting enamel heat exchanger tube, and support frame as described above is is vertically connected and composed by some gripper shoes, some stay pipes, gripper shoe being provided with the connecting hole for connecting enamel heat exchanger tube, in connecting hole, being provided with the slip cap of annular; The two ends of each enamel pipe module are also provided with module and pass in and out young header.
2. the enamel pipe low-level (stack-gas) economizer of low temperature resistant corrosion according to claim 1, is characterized in that, described slip cap is by bearings, and one end of slip cap is connected to this bearing, and this bearing is fixed on gripper shoe.
3. the enamel pipe low-level (stack-gas) economizer of low temperature resistant corrosion according to claim 2, is characterized in that, described slip cap is polytetrafluoroethylmaterial material.
4. the enamel pipe low-level (stack-gas) economizer of the low temperature resistant corrosion according to claim 1 or 2 or 3, is characterized in that, described enamel heat exchanger tube is arranged in snakelike, is provided with the enamel heat exchanger tube that some layers are snakelike in each enamel pipe module.
5. the enamel pipe low-level (stack-gas) economizer of low temperature resistant corrosion according to claim 4, is characterized in that, one end of described some layers of enamel heat exchanger tube arranges the little header of import, and the other end sets out young header.
6. the enamel pipe low-level (stack-gas) economizer of the low temperature resistant corrosion according to claim 1 or 2 or 3 or 5, is characterized in that, along flow of flue gas direction, is provided with high temperature section module group, middle-temperature section module group, low-temperature zone module group; Wherein, low-temperature zone module group is by enamel pipe module composition, and the heat exchanger tube in middle-temperature section module group and high temperature section module group adopts the low-temperature dew point corrosion of resistance to sulfuric acid steel or corrosion-resistant stainless steel material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554698.1U CN205037287U (en) | 2015-07-29 | 2015-07-29 | Resistant low temperature corrosion's enamel pipe low -level (stack -gas) economizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520554698.1U CN205037287U (en) | 2015-07-29 | 2015-07-29 | Resistant low temperature corrosion's enamel pipe low -level (stack -gas) economizer |
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| CN205037287U true CN205037287U (en) | 2016-02-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123657A (en) * | 2016-06-20 | 2016-11-16 | 浙江浙能台州第二发电有限责任公司 | Heat medium water tubular type flue gas heat-exchange unit |
| CN108680043A (en) * | 2018-06-15 | 2018-10-19 | 浙江开尔新材料股份有限公司 | Corrosion resistant enamel pipe flue gas condensing heat exchanger |
| CN111220002A (en) * | 2018-11-26 | 2020-06-02 | 宁波方太厨具有限公司 | Heat exchanger and water heater comprising same |
-
2015
- 2015-07-29 CN CN201520554698.1U patent/CN205037287U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123657A (en) * | 2016-06-20 | 2016-11-16 | 浙江浙能台州第二发电有限责任公司 | Heat medium water tubular type flue gas heat-exchange unit |
| CN108680043A (en) * | 2018-06-15 | 2018-10-19 | 浙江开尔新材料股份有限公司 | Corrosion resistant enamel pipe flue gas condensing heat exchanger |
| CN111220002A (en) * | 2018-11-26 | 2020-06-02 | 宁波方太厨具有限公司 | Heat exchanger and water heater comprising same |
| CN111220002B (en) * | 2018-11-26 | 2021-11-12 | 宁波方太厨具有限公司 | Heat exchanger and water heater comprising same |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Kaier Environmental Technology Co.,Ltd. Assignor: ZHEJIANG KAIER NEW MATERIALS Co.,Ltd. Contract record no.: X2023980042335 Denomination of utility model: Low temperature corrosion-resistant enamel tube low temperature economizer Granted publication date: 20160217 License type: Common License Record date: 20230924 |