CN212390342U - Hydrophobic recovery system during boiler blowpipe - Google Patents
Hydrophobic recovery system during boiler blowpipe Download PDFInfo
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- CN212390342U CN212390342U CN202021465511.8U CN202021465511U CN212390342U CN 212390342 U CN212390342 U CN 212390342U CN 202021465511 U CN202021465511 U CN 202021465511U CN 212390342 U CN212390342 U CN 212390342U
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- boiler
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- blowpipe
- hydrophobic
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Abstract
The utility model discloses a drainage recovery system during a boiler blowpipe period, which comprises a steam-water separator, a flash tank, a boiler drainage pump system, a main pipeline, a deaerator and a feed pump; the export of feed pump is linked together with the entry of boiler, and catch water is linked together through flash tank, boiler drainage pump system, trunk line and oxygen-eliminating device and feed pump's entry, and the trunk line has set gradually first stop valve, first filter screen and second stop valve, and this system realizes that hydrophobic recovery is to the oxygen-eliminating device during the boiler blowpipe, and it is extravagant to reduce the demineralized water, realizes working medium heat recovery, improves feed water temperature and then fuel saving.
Description
Technical Field
The utility model belongs to the technical field of the boiler, a hydrophobic recovery system during boiler blowpipe is related to.
Background
During the blowpipe of thermal power factory, the boiler is in the wet operation, in order to guarantee minimum feedwater flow, maintains the normal liquid level of catch water, need to discharge into the hydrophobic flash vessel with the inside partial saturated water of catch water, and the hydrophobic flash vessel drainage of current unit is generally arranged outward or is discharged into the condenser.
Drainage causes waste of a large amount of desalted water, a large amount of desalted water is consumed by a boiler steam blowpipe, and drainage possibly causes that the desalted water making capacity cannot meet the requirement of a boiler continuous blowpipe. Draining the drained water into a condenser, wherein the condenser cannot bear a large amount of high-temperature drained water without vacuumizing; if the waste heat is discharged into a condenser in a vacuum state, obvious heat loss of the working medium can be caused. Meanwhile, in the process of blowing the pipe, if the unit vacuum system cannot be put into operation, the drainage pipe cannot be recovered, so that the blowing pipe is limited by the vacuum system, and the construction period is delayed or the progress of the blowing pipe is slow.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a hydrophobic recovery system during boiler blowpipe, this system realizes that hydrophobic recovery is to the oxygen-eliminating device during the boiler blowpipe, and it is extravagant to reduce the demineralized water, realizes working medium heat recovery, improves feedwater temperature and then fuel saving.
In order to achieve the purpose, the drainage recovery system during the boiler blowpipe period of the utility model comprises a steam-water separator, a flash tank, a boiler drainage pump system, a main pipeline, a deaerator and a feed pump; the outlet of the feed pump is communicated with the inlet of the boiler, the steam-water separator is communicated with the inlet of the feed pump through the flash tank, the boiler drainage pump system, the main pipeline and the deaerator, and the main pipeline is sequentially provided with a first stop valve, a first filter screen and a second stop valve.
A main valve and a drain regulating valve are arranged between the main pipeline and the boiler drain pump system.
The main pipeline is communicated with a bypass pipeline in parallel, wherein a third stop valve, a second filter screen and a fourth stop valve are sequentially arranged on the bypass pipeline.
The boiler drain pump system consists of two boiler drain pumps which are communicated in parallel.
The main pipeline is communicated with an inlet at the top of the deaerator.
A condensate water tank is arranged between the flash tank and the boiler drainage pump system.
The filter screen backwashing device further comprises a backwashing device for online backwashing of the first filter screen and the second filter screen.
The steam-water separator is communicated with the flash tank through a boiler drainage water pipeline.
The utility model discloses following beneficial effect has:
hydrophobic recovery system during boiler blowpipe when concrete operation, during the boiler blowpipe, high temperature in the catch water dredges during water and steam gets into the flash vessel, and form saturated steam and saturated water through flash vessel dilatation step-down, saturated water is in the deaerator is discharged into through boiler hydrophobic pump system, it can promote the feedwater temperature to draw back in the deaerator to draw back to hydrophobic, water in the deaerator finally gets back to in the boiler through the feed pump, realize the recovery and the heat utilization of working medium, reduce the waste of demineralized water simultaneously, improve boiler feedwater temperature and then save fuel, the system realizes simply, and convenient for operation, it has practical meaning to accomplish smoothly in succession of boiler blowpipe.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is catch water, 2 is the flash tank, 3 is the condensate tank, 4 is the boiler drain pump, 5 is the main valve, 6 is the drainage governing valve, 7 is the oxygen-eliminating device, 8 is first filter screen, 9 is the second filter screen, 10 is the feed pump, 11 is boiler drainage water pipe, 12 is the trunk line, 13 is the bypass pipeline, 14 is the first stop valve, 15 is the second stop valve, 16 is the third stop valve, 17 is the fourth stop valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the drainage recovery system during the period of blowing the boiler according to the present invention includes a steam-water separator 1, a flash tank 2, a boiler drainage pump system 4, a main pipeline 12, a deaerator 7 and a feed pump 10; the outlet of the water feeding pump 10 is communicated with the inlet of the boiler system, the steam-water separator 1 in the boiler system is communicated with the inlet of the water feeding pump 10 through the flash tank 2, the boiler drain pump system 4, the main pipeline 12 and the deaerator 7, and the main pipeline 12 is sequentially provided with a first stop valve 14, a first filter screen 8 and a second stop valve 15.
A main valve 5 and a drain regulating valve 6 are arranged between the main pipeline 12 and the boiler drain pump system 4; the main pipeline 12 is communicated with a bypass pipeline 13 in parallel, wherein the bypass pipeline 13 is sequentially provided with a third stop valve 16, a second filter screen 9 and a fourth stop valve 17; the boiler drain pump system 4 consists of two boiler drain pumps which are communicated in parallel; the main pipe 12 is communicated with an inlet at the top of the deaerator 7.
A condensate water tank 3 is arranged between the flash tank 2 and the boiler drain pump system 4; the utility model also comprises a back washing device for back washing the first filter screen 8 and the second filter screen 9 on line; the steam-water separator 1 is communicated with the flash tank 2 through a boiler drainage pipeline 11.
The utility model discloses a concrete working process does:
in the starting and running processes of the boiler, high-temperature drainage water and steam generated by the steam-water separator 1 are collected and then discharged into the flash tank 2 through the boiler drainage water pipeline 11, and then are subjected to capacity expansion and pressure reduction through the flash tank 2 to form saturated steam and saturated water, wherein the saturated water is discharged into the condensate water tank 3, the water output by the condensate water tank 3 is conveyed into the deaerator 7 through the boiler drainage pump system 4, and the feed water in the deaerator 7 is conveyed back to the boiler through the feed pump 10.
In addition, during actual operation, the drain flow entering the deaerator 7 is adjusted through the drain adjusting valve 6, and the drain enters the deaerator 7, so that the feed water temperature of the boiler can be increased, and fuel is saved.
In addition, a main pipeline 12 and a bypass pipeline 13 are arranged between the drain control valve 6 and the deaerator 7, a standby mode is adopted, when the filter screen in one pipeline is blocked during a blowing pipe period, the filter screen can be isolated through a front stop valve and a rear stop valve and switched to the other pipeline, the water feeding pump 10 is maintained to continuously operate, the continuous operation of the blowing pipe is ensured, the filter screen is cleaned without stopping the pump, and the number of times of machine set shutdown is reduced. The filter screens on the main pipeline 12 and the bypass pipeline 13 can filter partial impurities to ensure the water quality of the deaerator 7, the first filter screen 8 and the second filter screen 9 are provided with an online backwashing device, the filter screens are quickly cleaned, and the operation is simple and convenient.
Claims (8)
1. The drain recovery system during the boiler blow pipe period is characterized by comprising a steam-water separator (1), a flash tank (2), a boiler drain pump system (4), a main pipeline (12), a deaerator (7) and a feed pump (10); the outlet of a water feeding pump (10) is communicated with the inlet of a boiler, a steam-water separator (1) is communicated with the inlet of the water feeding pump (10) through a flash tank (2), a boiler drainage pump system (4), a main pipeline (12) and a deaerator (7), and the main pipeline (12) is sequentially provided with a first stop valve (14), a first filter screen (8) and a second stop valve (15).
2. Boiler blow pipe period drain recovery system according to claim 1, characterized in that between the main pipe (12) and the boiler drain pump system (4) there is arranged a main valve (5) and a drain regulating valve (6).
3. Boiler blowpipe period hydrophobic recovery system in accordance with claim 1, characterized by that the main pipe (12) is in parallel connected with a bypass pipe (13), wherein the bypass pipe (13) is provided with a third stop valve (16), a second screen (9) and a fourth stop valve (17) in sequence.
4. Boiler blow pipe hydrophobic recovery system according to claim 1, characterized in that the boiler hydrophobic pump system (4) consists of two boiler hydrophobic pumps communicating in parallel.
5. Boiler blowpipe period hydrophobic recovery system as claimed in claim 1, characterized in that the main pipe (12) communicates with the inlet at the top of the deaerator (7).
6. The boiler blowpipe period drain recovery system of claim 1, characterized in that a condensate tank (3) is provided between the flash tank (2) and the boiler drain pump system (4).
7. The system for hydrophobic recovery during boiler blowpipe of claim 3, further comprising a backwash device for on-line backwashing of the first (8) and second (9) screens.
8. The system for drain recovery during boiler blowpipe according to claim 1, characterized in that the steam-water separator (1) is in communication with the flash tank (2) via boiler drain water piping (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021465511.8U CN212390342U (en) | 2020-07-22 | 2020-07-22 | Hydrophobic recovery system during boiler blowpipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021465511.8U CN212390342U (en) | 2020-07-22 | 2020-07-22 | Hydrophobic recovery system during boiler blowpipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212390342U true CN212390342U (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021465511.8U Active CN212390342U (en) | 2020-07-22 | 2020-07-22 | Hydrophobic recovery system during boiler blowpipe |
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| CN (1) | CN212390342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754350A (en) * | 2022-03-08 | 2022-07-15 | 华北电力科学研究院有限责任公司 | Heat recovery system, method and device |
-
2020
- 2020-07-22 CN CN202021465511.8U patent/CN212390342U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754350A (en) * | 2022-03-08 | 2022-07-15 | 华北电力科学研究院有限责任公司 | Heat recovery system, method and device |
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