CN204026645U - A kind of anti-leak economizer - Google Patents
A kind of anti-leak economizer Download PDFInfo
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- CN204026645U CN204026645U CN201420440273.3U CN201420440273U CN204026645U CN 204026645 U CN204026645 U CN 204026645U CN 201420440273 U CN201420440273 U CN 201420440273U CN 204026645 U CN204026645 U CN 204026645U
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Abstract
A kind of anti-leak economizer, comprise at least two coiled pipe groups, wallboard, the large header of water inlet and the large header of water outlet, described coiled pipe group comprises two coiled pipes, coiled pipe comprises bend pipe and straight tube, coiled pipe bend loss stretches out wallboard, and weld mutually with wallboard, the bend loss of described coiled pipe is also provided with water receiving valve and Water stop valve; The water inlet of described coiled pipe group and delivery port are connected with the large header of water inlet and the large header of water outlet respectively, the utility model low temperature is economized coal gas and is adopted modularized design, elbow is placed on outside cigarette air channel by single coiled pipe, when certain module occurs can effectively be blocked by short circuit pipe when leaking, pass through structural optimization, successfully manage the leakage that low temperature economizes coal gas snake-like tube row, relative to conventional boiler economizer coiled pipe, it is more timely that process is leaked in reply.
Description
Technical field
The utility model belongs to thermal power plant design field, is specifically related to the low-level (stack-gas) economizer arranged in a kind of coal unit boiler export flue arranging leakage-proof structure.
Background technology
Low-level (stack-gas) economizer generally arrange air preheater be exported to desulfurizing tower before flue section, utilize wave-fin pipe to arrange the waste heat absorbing flue gas and heat the condensate water of releasing from steam turbine low-pressure heater, condensate water after heating returns low-pressure heater, exclusion extracted steam from turbine, increase steam turbine working power, improve unit efficiency, reduce coal consumption.
In China's active service fired power generating unit, exhaust gas temperature generally maintains 125 DEG C ~ 150 DEG C left and right horizontal, and the generating set exhaust gas temperature using brown coal, at 170 DEG C ~ 180 DEG C, installs the cigarette temperature drop after low-level (stack-gas) economizer additional low general at about 120 DEG C.Afterbody cigarette duct cross-section is less, and for subcritical comparatively large with super critical boiler exhaust gas volumn, reaching desirable cigarette temperature drop needs larger heat exchange area, and low-level (stack-gas) economizer S-shaped tube panel quantity is also more, because manufacture the reasons such as welding cannot ensure tube panel quality completely; And cigarette temperature drop is low close to easily causing the cold end corrosion of pipe and stifled ash during acid dew point, through operation after a while, finned tube is easily revealed.
Conventional boiler economizer is that coiled pipe (containing elbow) entirety is put into back-end ductwork, and coiled pipe two ends are connected with import and export header through furnace wall, or together with header integral arrangement in back-end ductwork; If snake-like tube row somewhere is revealed, necessary blowing out inspection, occurs to leak place when snake-like tube row is middle, increases difficulty to examine and replace.If boiler export back-end ductwork installs the structure that low-level (stack-gas) economizer also adopts conventional boiler additional, when there is cold end corrosion leakage, because tube panel quantity is more, cigarette duct cross-section size is less, adds difficulty and the workload of operating maintenance.
Summary of the invention
For overcoming the deficiency that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of when tube panel is revealed in economizer, can process leak point in time, and do not affect economizer operation a kind of anti-leak economizer.
For achieving the above object, the utility model is by realizing by the following technical solutions: a kind of anti-leak economizer, comprise at least two coiled pipe groups, wallboard, the large header of water inlet and the large header of water outlet, described coiled pipe group comprises two coiled pipes, coiled pipe comprises bend pipe and straight tube, coiled pipe bend loss stretches out wallboard, and welds mutually with wallboard, and the bend loss of described coiled pipe is also provided with water receiving valve and Water stop valve; The water inlet of described coiled pipe group and delivery port are connected with the large header of water inlet and the large header of water outlet respectively.
Further, a kind of anti-leak economizer, is also included in the nipple installed and used when coiled pipe is revealed, and the two ends of described nipple are connected respectively with without the water receiving valve revealed on coiled pipe bend pipe.
Further, two described coiled pipe dish knots, the water inlet end of coiled pipe is provided with into the little header of water, and its water side is provided with the little header of water outlet, and the little header of described water outlet and little header of intaking are connected to into the large header of water and the large header of water outlet respectively by valve.
Further, the bend loss of described coiled pipe has wrapped insulation material.
Further, described insulation material is heat-preservation cotton.
The beneficial effects of the utility model are: low temperature is economized coal gas and adopted modularized design, elbow is placed on outside cigarette air channel by single coiled pipe, when certain module occurs can effectively be blocked by short circuit pipe when leaking, pass through structural optimization, successfully manage the leakage that low temperature economizes coal gas snake-like tube row, relative to conventional boiler economizer coiled pipe, it is more timely that process is leaked in reply.
Accompanying drawing explanation
Fig. 1 is a kind of anti-leak coal economizer structure of the utility model schematic diagram.
In figure, wallboard 1, large header 2 of intaking, the large header 3 of water outlet, coiled pipe 4, water receiving valve 5, Water stop valve 6, nipple 7, little header 8 of intaking, the little header 9 of water outlet, valve 10, leakage point 11.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of anti-leak economizer, comprise at least two coiled pipe groups, wallboard 1, large header 2 of intaking and the large header 3 of water outlet, described coiled pipe group comprises two coiled pipes 4, coiled pipe 4 comprises bend pipe and straight tube, coiled pipe 4 bend loss stretches out wallboard 1, and welds mutually with wallboard 1, the bend loss of described coiled pipe 4 is also provided with water receiving valve 5 and Water stop valve 6, the water inlet of described coiled pipe group and delivery port are connected with the large header 2 of water inlet and the large header 3 of water outlet respectively, a kind of anti-leak economizer, also be included in the nipple 7 installed and used when coiled pipe 4 is revealed, the two ends of described nipple 7 are connected respectively with without the water receiving valve 5 revealed on coiled pipe 4 bend pipe, two described coiled pipes 4 coil knot, the water inlet end of coiled pipe 4 is provided with into the little header 8 of water, its water side is provided with the little header 9 of water outlet, the little header of described water outlet 9 and little header 8 of intaking are connected to into the large header of water 2 and the large header 3 of water outlet by valve 10 respectively, the bend loss of described coiled pipe 4 has wrapped insulation material, described insulation material is heat-preservation cotton.
In use procedure, when finding to leak, first determine that certain subregion leaks, which module leakage point 11 turns off that this subregion isolating valve finds is, then No leakage coiled pipe 4 is connected with nipple 7, do not affect whole system to run, low temperature is economized coal gas and is adopted modularized design, elbow is placed on outside cigarette air channel by single coiled pipe, when certain module occurs can effectively be blocked by short circuit pipe when leaking, by structural optimization, successfully manage the leakage that low temperature economizes coal gas snake-like tube row, relative to conventional boiler economizer coiled pipe, it is more timely that process is leaked in reply.
Obviously, above-mentioned embodiment is only better embodiment of the present utility model, and any simple modifications on this basis all belongs to protection domain of the present utility model.
Claims (4)
1. an anti-leak economizer, comprise at least two coiled pipe groups, wallboard, the large header of water inlet and the large header of water outlet, it is characterized in that described coiled pipe group comprises two coiled pipes, coiled pipe comprises bend pipe and straight tube, coiled pipe bend loss stretches out wallboard, and weld mutually with wallboard, the bend loss of described coiled pipe is also provided with water receiving valve and Water stop valve; The water inlet of described coiled pipe group and delivery port are connected with the large header of water inlet and the large header of water outlet respectively.
2. a kind of anti-leak economizer according to claim 1, characterized by further comprising the nipple installed and used when coiled pipe is revealed, and the two ends of described nipple are connected respectively with without the water receiving valve revealed on coiled pipe bend pipe.
3. a kind of anti-leak economizer according to claim 1, it is characterized in that two described coiled pipe dish knots, the water inlet end of coiled pipe is provided with into the little header of water, its water side is provided with the little header of water outlet, and the little header of described water outlet and little header of intaking are connected to into the large header of water and the large header of water outlet respectively by valve.
4. a kind of anti-leak economizer according to claim 1, the bend loss that it is characterized in that described coiled pipe has wrapped insulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420440273.3U CN204026645U (en) | 2014-08-06 | 2014-08-06 | A kind of anti-leak economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420440273.3U CN204026645U (en) | 2014-08-06 | 2014-08-06 | A kind of anti-leak economizer |
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| CN204026645U true CN204026645U (en) | 2014-12-17 |
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| CN201420440273.3U Active CN204026645U (en) | 2014-08-06 | 2014-08-06 | A kind of anti-leak economizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910082A (en) * | 2015-02-20 | 2016-08-31 | 三菱重工业株式会社 | Economizer, mixed boiler and application method thereof |
| CN106871101A (en) * | 2017-01-25 | 2017-06-20 | 中国科学院广州能源研究所 | High-efficiency abrasion-proof low-level (stack-gas) economizer |
| CN109556105A (en) * | 2018-12-28 | 2019-04-02 | 东方菱日锅炉有限公司 | A kind of snakelike tube module |
-
2014
- 2014-08-06 CN CN201420440273.3U patent/CN204026645U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910082A (en) * | 2015-02-20 | 2016-08-31 | 三菱重工业株式会社 | Economizer, mixed boiler and application method thereof |
| CN106871101A (en) * | 2017-01-25 | 2017-06-20 | 中国科学院广州能源研究所 | High-efficiency abrasion-proof low-level (stack-gas) economizer |
| CN106871101B (en) * | 2017-01-25 | 2019-07-26 | 中国科学院广州能源研究所 | High-efficiency abrasion-proof low-level (stack-gas) economizer |
| CN109556105A (en) * | 2018-12-28 | 2019-04-02 | 东方菱日锅炉有限公司 | A kind of snakelike tube module |
| CN109556105B (en) * | 2018-12-28 | 2024-05-10 | 东方菱日锅炉有限公司 | Coiled pipe module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 301 room, Airport Road, Licheng District, Shandong, Ji'nan, 7617, China Patentee after: Ji'nan mountain Environmental Technology Co., Ltd. Address before: 301 room, Airport Road, Licheng District, Shandong, Ji'nan, 7617, China Patentee before: JINAN SHANYUAN ELECTRIC EQUIPMENT CO., LTD. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Leak-proof economizer Effective date of registration: 20190903 Granted publication date: 20141217 Pledgee: Qilu bank Limited by Share Ltd branch of the southern suburbs of Ji'nan Pledgor: Ji'nan mountain Environmental Technology Co., Ltd. Registration number: Y2019370000028 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211223 Granted publication date: 20141217 Pledgee: Qilu bank Limited by Share Ltd. branch of the southern suburbs of Ji'nan Pledgor: JINAN SHANYUAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2019370000028 |