CN203364117U - Flash evaporation steam temperature regulation system - Google Patents
Flash evaporation steam temperature regulation system Download PDFInfo
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- CN203364117U CN203364117U CN 201320218657 CN201320218657U CN203364117U CN 203364117 U CN203364117 U CN 203364117U CN 201320218657 CN201320218657 CN 201320218657 CN 201320218657 U CN201320218657 U CN 201320218657U CN 203364117 U CN203364117 U CN 203364117U
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- superheater
- steam
- header
- desuperheating water
- collection box
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Abstract
The utility model relates to a flash evaporation steam temperature regulation system. The flash evaporation steam temperature regulation system comprises a coal economizer outlet collection box, a steam pocket, a steam desuperheating water pipeline, a superheater inlet pipeline, a superheater, a mixing collection box, a superheater inlet collection box and a superheater outlet collection box. The superheater inlet collection box and the superheater outlet collection box are respectively disposed at the inlet and the outlet of the superheater. The coal economizer outlet collection box is in pipe-jointing with the steam pocket. The steam pocket is connected with the superheater inlet collection box via the superheater inlet pipeline. The mixing collection box is disposed on the superheater inlet pipeline, between the superheater or an outlet pipe of the super heater. The coal economizer outlet collection box is connected with the mixing collection box via the steam desuperheating water pipeline. A regulating valve is arranged on the steam desuperheating water pipeline. By means of flash evaporation technology, steam flow is increased and a function of regulating steam temperature is exerted. During a process of regulating steam temperature, evaporation capacity of a boiler is increased.
Description
Technical field
The utility model relates to the thermal power field, relates in particular to a kind of flash distillation steam regulation temperature system that improves boiler capacity in the steam regulation temperature.
Background technology
In steam power plant, while due to fuel, air quantity or other external factor, causing the load adjustment of heat exchanger, thermal source and the design load of heat exchanger are not mated, and cause the quantity of steam of heat exchanger can not meet the cooling needs of heat exchanger tube.Now, vapor (steam) temperature and design load produce deviation, high temperature heat source is more, the heat exchanger exit vapor (steam) temperature surpasses permissible value, for the deformed damaged that prevents heat exchange pipeline and the safe operation that guarantees gas utilization unit, when the heat exchanger exit vapor (steam) temperature surpasses the heat exchanger tube maximum permissible temperature, the heat exchanger off-the-line need be moved, cause the heat exchanger utilization ratio to reduce, frequent start-stop also will cause the lost of life.
In order to extend the service life of heat exchanger, improve service efficiency, when the high temperature heat source of heat exchanger surpasses permissible value, need to adopt and reduce heat source temperature or reduce the vapor (steam) temperature mode.Reduce the mode sluggish of heat source temperature, the not obvious and less employing of cooling-down effect.Reduce the vapor (steam) temperature mode non-contact attemperator and contact attemperator generally arranged:
1, as shown in Figure 5, non-contact attemperator is to adopt a kind of tubing heat exchanger, and it comprises economizer exit header 1, drum 10, superheater inlet duct 3, superheater 4, superheater entrance header 7, the super-heater exit case 8 connected according to relation shown in Fig. 5.It is cooling water that non-contact attemperator be take boiler feedwater or pot water, cooling water by flowing through in pipe steam by pipe external space cross-current mistake.
2, as shown in Figure 6, hybrid (water jet) attemperator comprises economizer exit header 1, drum 10, steam temperature reducing waterpipe 2, superheater inlet duct 3, superheater 4, mixing header 5, superheater entrance header 7, the super-heater exit case 8 connected according to relation shown in Fig. 6.This hybrid (water jet) attemperator adopts water is directly sprayed in steam to reach the purpose of cooling, it is simple in structure, the temperature adjustment ability is large and inertia is little, sensitive, be easy to automation, be most widely used a kind of temperature equipment, but it can't be taken into account adjustment and increase boiler capacity.
The utility model content
The technical problems to be solved in the utility model is to provide the flash distillation steam regulation temperature system that can improve boiler capacity in a kind of process carrying out the steam regulation temperature.
For solving the problems of the technologies described above, embodiment of the present utility model provides technical scheme as follows:
A kind of flash distillation steam regulation temperature system, it comprises economizer exit header, drum 10, steam temperature reducing waterpipe, superheater inlet duct, superheater, mixing header, superheater entrance header, super-heater exit case, and described superheater entrance header, super-heater exit case lay respectively at entrance, the outlet of described superheater; Described economizer exit header pipeline is connected in described drum 10, described drum 10 is connected in described superheater entrance header by described superheater inlet duct, described mixing header is located on described superheater inlet duct, be located in the middle of described superheater or be located at the outlet conduit of described superheater, described economizer exit header also is connected in described mixing header by described steam temperature reducing waterpipe, and described steam temperature reducing waterpipe is provided with control valve.
Preferably, described mixing header adopts venturi tube structure.
Preferably, the throat position of described mixing header is provided with the desuperheating water be connected with described steam temperature reducing waterpipe and sprays into pipe, and described desuperheating water sprays into pipe and extends to described mixing header inside.
Preferably, in described mixing header inside, it is the hollow bar of hollow structure that described desuperheating water sprays into pipe, and described desuperheating water sprays into pipe and is provided with a plurality of apopores.
Preferably, in described mixing header inside, described desuperheating water sprays into the bearing of trend of pipe and the axially parallel of described mixing header.
Preferably, described apopore is tangential inclined hole, so that come from the reverse inclination of the desuperheating water of described steam temperature reducing waterpipe, sprays into, and increases the contact area of desuperheating water and steam.
Embodiment of the present utility model has following beneficial effect:
In such scheme, employing higher than the hot water of steam pressure as desuperheating water, spray into mixing header, because the hot water enthalpy is higher, entering after mixing header needs to absorb less heat and just can become steam, when high temperature heat source is more, utilize the hot water flash evaporation technology to increase steam flow, play the effect of steam regulation temperature.Therefore, in the process of carrying out the steam regulation temperature, the utility model can improve boiler capacity.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model embodiment mono-;
The structural representation of the mixing header that Fig. 2 is embodiment illustrated in fig. 1;
The structure for amplifying schematic diagram that Fig. 3 is local I in Fig. 2;
The structural representation that Fig. 4 is the utility model embodiment bis-;
The structural representation that Fig. 5 is existing non-contact attemperator;
The structural representation that Fig. 6 is existing contact attemperator.
The specific embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Embodiment of the present utility model, for can not improve the problem of boiler capacity in prior art in the process of carrying out the steam regulation temperature, provides a kind of flash distillation steam regulation temperature system that can improve boiler capacity.
As shown in Figure 1, embodiment mono-of the present utility model comprises economizer exit header 1, drum 10, steam temperature reducing waterpipe 2, superheater inlet duct 3, superheater 4, mixing header 5, superheater entrance header 7, super-heater exit case 8.Superheater entrance header 7, super-heater exit case 8 lay respectively at entrance, the outlet of superheater 4.Economizer exit header 1 pipeline is connected in drum 10, drum 10 is connected in superheater entrance header 7 by superheater inlet duct 3, mixing header 5 is located on superheater inlet duct 3, economizer exit header 1 also is connected in mixing header 5 by steam temperature reducing waterpipe 2, and steam temperature reducing waterpipe 2 is provided with control valve 21.
As shown in Figures 2 and 3, mixing header 5 adopts venturi tube structure.The throat position of mixing header 5 is provided with the desuperheating water that is connected with steam temperature reducing waterpipe 2 and extends to mixing header 5 inside and sprays into pipe 9.In mixing header 5 inside, desuperheating water sprays into pipe 9 for the hollow bar of hollow structure, and extending axially along mixing header 5, further, desuperheating water sprays into pipe 9 and is provided with a plurality of tangential inclined holes 91 for water outlet, spray into so that come from the reverse inclination of the desuperheating water of steam temperature reducing waterpipe 2, increase the contact area of desuperheating water and steam.
The advantage of the mixing header 5 of the present embodiment one is: adopt venturi tube structure, desuperheating water sprays in Venturi tube throat, increases the mass dryness fraction of hot water flash evaporation saturated vapor; The reverse inclination of desuperheating water sprays into, and increases the contact area of desuperheating water and steam, strengthens the steam disturbance, makes desuperheating water and steam more even.
Application the present embodiment for the moment, when vapor (steam) temperature surpasses design load, adjust the control valve 21 on steam temperature reducing waterpipe 2, desuperheating water enters mixing header 5, because mixing header 5 internal pressures reduce, flash off rapidly fractional saturation steam and saturation water, saturated vapor mixes rapidly with original steam, and saturation water is by the high velocity vapor atomization, and saturation water is in the heat exchange of superheater 4 interior absorption superheated steam heat release and flue gas, play the effect of steam regulation temperature, can also improve boiler capacity simultaneously.
As shown in Figure 4, the utility model embodiment bis-is with the difference of the embodiment mono-shown in Fig. 1, and mixing header 5 is located in the middle of superheater 4.This embodiment bis-adopts and will be connected to mixing header 5 tops by steam temperature reducing waterpipe 2 higher than the hot water of steam pressure, mixing header 5 is arranged in the middle of superheater 4, when vapor (steam) temperature surpasses design load, adjust the control valve 21 on steam temperature reducing waterpipe 2, after desuperheating water enters mixing header 5, because mixing header 5 internal pressures reduce, flash off rapidly fractional saturation steam and saturation water, saturated vapor mixes rapidly with original steam, saturation water is by the high velocity vapor atomization, saturation water is in the heat exchange of superheater 4 interior absorption superheated steam heat release and flue gas, play the effect of steam regulation temperature, can also improve boiler capacity simultaneously.
In addition, it is pointed out that in other embodiments, mixing header also can be arranged on the outlet conduit of superheater.
Visible, when air quantity or other external factor cause the heat exchanger load adjustment, thermal source and the design load of heat exchanger are not mated, while causing the quantity of steam of heat exchanger can not meet the needs of heat exchanger tube cooling, by hot water flash evaporation technology steam regulation flow, absorb unnecessary high temperature heat source, can improve utilization efficiency of heat energy, reduce heat-energy losses.
To sum up, advantage of the present utility model has:
1, the steam regulation temperature is convenient, rapid, and maintenance is less.
2, steam temperature reducing water is used the hot water higher than steam pressure, enter superheater after step-down flash off fractional saturation steam and saturation water; Saturated vapor mixes rapidly with original steam, improves the quantity of steam that enters heat exchange pipeline; The saturation water enthalpy is higher, and the heat that absorbs less flue gas and steam just can be vaporized, and when reducing vapor (steam) temperature, increases the quantity of steam of heat exchanger.
3, after the heat source temperature of heat exchanger surpasses design load, can increase the steam flow that enters heat exchanger tube, prevent the heat exchange pipeline overtemperature and damage.
4, after the heat source temperature of heat exchanger improves, need not carry out off-the-line to boiler, prolonged boiler service life.
The above is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a flash distillation steam regulation temperature system, it is characterized in that, comprise economizer exit header, drum, steam temperature reducing waterpipe, superheater inlet duct, superheater, mixing header, superheater entrance header, super-heater exit case, described superheater entrance header, super-heater exit case lay respectively at entrance, the outlet of described superheater;
Described economizer exit header pipeline is connected in described drum, described drum is connected in described superheater entrance header by described superheater inlet duct, described mixing header is located on described superheater inlet duct, be located in the middle of described superheater or be located at the outlet conduit of described superheater, described economizer exit header also is connected in described mixing header by described steam temperature reducing waterpipe, and described steam temperature reducing waterpipe is provided with control valve.
2. flash distillation steam regulation temperature system according to claim 1, is characterized in that, described mixing header adopts venturi tube structure.
3. flash distillation steam regulation temperature system according to claim 2, is characterized in that, the throat position of described mixing header is provided with the desuperheating water be connected with described steam temperature reducing waterpipe and sprays into pipe, and described desuperheating water sprays into pipe and extends to described mixing header inside.
4. flash distillation steam regulation temperature system according to claim 3, is characterized in that, in described mixing header inside, it is the hollow bar of hollow structure that described desuperheating water sprays into pipe, and described desuperheating water sprays into pipe and is provided with a plurality of apopores.
5. flash distillation steam regulation temperature system according to claim 4, is characterized in that, in described mixing header inside, described desuperheating water sprays into the bearing of trend of pipe and the axially parallel of described mixing header.
6. flash distillation steam regulation temperature system according to claim 5, is characterized in that, described apopore is tangential inclined hole, so that come from the reverse inclination of the desuperheating water of described steam temperature reducing waterpipe, sprays into, and increases the contact area of desuperheating water and steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320218657 CN203364117U (en) | 2013-04-26 | 2013-04-26 | Flash evaporation steam temperature regulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320218657 CN203364117U (en) | 2013-04-26 | 2013-04-26 | Flash evaporation steam temperature regulation system |
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| CN203364117U true CN203364117U (en) | 2013-12-25 |
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| CN 201320218657 Expired - Fee Related CN203364117U (en) | 2013-04-26 | 2013-04-26 | Flash evaporation steam temperature regulation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953205A (en) * | 2016-06-22 | 2016-09-21 | 西安热工研究院有限公司 | Boiler steam temperature adjusting system and working method |
| CN106196002A (en) * | 2016-07-01 | 2016-12-07 | 无锡锡能锅炉有限公司 | Gas fired-boiler saturated vapor regulates system with superheated steam |
-
2013
- 2013-04-26 CN CN 201320218657 patent/CN203364117U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953205A (en) * | 2016-06-22 | 2016-09-21 | 西安热工研究院有限公司 | Boiler steam temperature adjusting system and working method |
| CN106196002A (en) * | 2016-07-01 | 2016-12-07 | 无锡锡能锅炉有限公司 | Gas fired-boiler saturated vapor regulates system with superheated steam |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Maples International Center, No. 32 Beijing 100082 Haidian District Xizhimen North Street office building B room 906 Patentee after: TOP RESOURCE CONSERVATION & ENVIRONMENT CO., LTD. Address before: Maples International Center, No. 32 Beijing 100082 Haidian District Xizhimen North Street office building B room 906 Patentee before: Top Resource Conservation Engineering Co., Ltd. |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160224 Address after: Maples International Center, No. 32 Beijing 100082 Haidian District Xizhimen North Street office building B room 906 Patentee after: TOP RESOURCE CONSERVATION & ENVIRONMENT CO., LTD. Patentee after: NINGXIA ENERGY-SAVING INVESTMENT CO., LTD. Address before: Maples International Center, No. 32 Beijing 100082 Haidian District Xizhimen North Street office building B room 906 Patentee before: TOP RESOURCE CONSERVATION & ENVIRONMENT CO., LTD. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210113 Address after: 101318 1101, 11th floor, 69 xibalizhuang Road, Haidian District, Beijing Patentee after: BEIJING QINGXIN ENVIRONMENTAL ENERGY SAVING TECHNOLOGY Co.,Ltd. Address before: 100082 room 906, block B, office building, maple blue international centre, 32 Xizhimen North Street, Haidian District, Beijing. Patentee before: TOP RESOURCE CONSERVATION & ENVIRONMENT Corp. Patentee before: NINGXIA ENERGY SAVING INVESTMENT Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20210426 |