CN206888161U - A kind of band water seal flue draining overflow mechanism - Google Patents
A kind of band water seal flue draining overflow mechanism Download PDFInfo
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- CN206888161U CN206888161U CN201720757619.6U CN201720757619U CN206888161U CN 206888161 U CN206888161 U CN 206888161U CN 201720757619 U CN201720757619 U CN 201720757619U CN 206888161 U CN206888161 U CN 206888161U
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Abstract
The utility model discloses a kind of band water seal flue draining overflow mechanism, including overflow casing, drain inlet pipeline and drainage overflow pipe road；The top open part of overflow casing is covered with top cover, the lower end of drain inlet pipeline is inserted in spill box body through top cover, the side of overflow casing top is provided with overfall and water supplement port, drainage overflow pipe road is connected with the overfall of overflow body side, the side of overflow bottom half offers discharging hole, wherein, water supplement port, overfall, the lower end of drain inlet pipeline and discharging hole are sequentially distributed from top to bottom, ball-cock assembly is provided with water supplement port, ball float in ball-cock assembly is located on the liquid level at overfall, ball-cock assembly is connected with process water feed pipe, device cleaning bottom deposit slurries are convenient, and it will not be failed without water seal under drainage situation for a long time, and the problem of being not in flue gas leakage.
Description
Technical field
The utility model belongs to thermal power plant's environmental transformation engineering flue drainage reconstruction field, is related to a kind of band water seal flue row
Water overflow mechanism.
Background technology
In order to improve atmosphere quality, country and some areas government have formulated increasingly severe row for Thermal Power Generation Industry
Put standard, it is desirable to take dedusting, denitration, desulfurization measure to carry out pollution control.
In order to adapt to environmental transformation needs, power plant uses Wet Limestone Desulfurization device mostly, flue-gas temperature behind absorption tower
At 60 DEG C or so, absorption tower outlet net flue can continue to produce condensate, and flue condensate need to discharge in time.In order to prevent " cigarette
There are and realized the needs of minimum discharge in chimney rain ", need to increase board-like flue demister, board-like flue demisting after desulfurizer
Device, which rinses a large amount of flushing waters caused by meeting, need to be emitted into desulfuration absorbing tower or drain.Furthermore absorption tower uses glass mostly
Scale lining anti-corrosion, absorption tower gas approach typically install accident spray equipment additional, prevent absorption tower anticorrosive coat under the high temperature conditions
Destroy, when accident spray starts, absorption tower gas approach can produce ponding and need to exclude in time, due to being limited by place, transform work
Often often the gradient is inadequate for absorption tower gas approach in journey, and flue ponding caused by accident spray equipment can not all flow to absorption
Tower and there is the risk for flowing to air-introduced machine, need also exist for draining being emitted into plant area's drainage system.
There are following three kinds for the Normal practice of environmental transformation project flue drainpipe access drain：1. drainage pipeline connects
Enter drain, be inserted directly into certain altitude draining under drain liquid level, while forming water seal prevents flue gas from revealing；2. drainpipe is last
End sets U-shaped curved, formation water seal and draining；3. drainage pipe end sets valve, draining is periodically opened, is usually closed.The above three
Problems be present in kind way：1) because live place limits, drainpipe can not often be connected to drain, and neighbouring ground trench depth is again
Effective water seal can not be formed, causes flue gas to reveal, sets new drain to be limited by place, newly-increased drain will also result in civil engineering
And the increase of anti-corrosion expense, meanwhile, the product slurries cleaning of drain bottom is also inconvenient；2) U-shaped curved water seal in drainpipe for a long time without row
Water seal can fail in the case of water, water seal again can not artificial recharge, U-shaped curved blocking is will also result in when slurry content is higher in draining,
So that flue gas leakage or draining can not discharge in time；3) pipe drainage discharge can be caused not in time by installing valve additional, on the other hand
Due to no water seal, Open valve also has flue gas leakage problem.In order to solve the above problems, ensure that flue draining is reliably arranged
Put, ensure that flue gas does not leak again, propose this band water seal flue draining overflow mechanism.
By taking certain 2 × 300MW unit environmental protection minimum discharge desulfurizing fly ash engineering that design is implemented as an example, absorption tower entrance lifting
2 meters, absorption tower gas approach slope aspect air inducing pusher side is caused, absorption tower gas approach is shorter, and inclination angle is inadequate, and gas approach is equipped with
Accident sprays, and original design installs water leg additional between accident is sprayed to air-introduced machine side flue, and drainage pipeline is discharged into trench, due to pipeline
Drain can not be directly accessed, electric butterfly valve can only be added in drainage pipe end, design electric butterfly valve sprays chain unlatching with accident,
Found in debugging process, because entrance a small amount of slurries in absorption tower are spilt, pipeline still has water row in the case of accident spray is not actuated
Go out, electric butterfly valve can only be chronically at opening, and butterfly valve, which closes draining, the risk for flowing to air-introduced machine.Due to being non-full pipe
Stream, largely the flue gas without desulfurization process is together discharged with draining, and site environment is severe.
Utility model content
The shortcomings that the purpose of this utility model is to overcome above-mentioned prior art, there is provided a kind of band water seal flue draining is overflow
Device is flowed, device cleaning bottom deposit slurries are convenient, and will not be failed without water seal under drainage situation for a long time, and will not go out
The problem of existing flue gas leakage.
To reach above-mentioned purpose, band water seal flue draining overflow mechanism described in the utility model includes overflow casing, row
Pipe inlet pipeline and drainage overflow pipe road；
The top open part of overflow casing is inserted in overflow covered with top cover, the lower end of drain inlet pipeline through top cover
In casing, the side of overflow casing top is provided with overfall and water supplement port, and drainage overflow pipe road overflows with overflow body side
Head piece is connected, the side of overflow bottom half offers discharging hole, wherein, water supplement port, overfall, drain inlet pipeline
Lower end and discharging hole are sequentially distributed from top to bottom, are provided with ball-cock assembly in water supplement port, and the ball float in ball-cock assembly is located at overfall
Liquid level on, ball-cock assembly is connected with process water feed pipe.
Top cover is secured by bolts in the top open part of overflow casing.
Mutually welded between drain inlet pipeline and top cover, the upper end of drain inlet pipeline is provided with flange-interface.
Drainage overflow pipe road and the angle of horizontal direction are 5 °.
Motor-driven valve is provided with discharging hole.
The inwall of discharging hole is provided with anticorrosive coat.
Anticorrosive coat is glass flake anticorrosive coat.
The utility model has the advantages that：
For band water seal flue draining overflow mechanism described in the utility model in concrete operations, liquid level is increased to overflow
Under the overfall of casing along when, while ball-cock assembly is closed automatically, when flue drainpipe for a long time without being drained into overflow casing when,
The liquid level of overflow casing reclaimed water declines, then ball-cock assembly automatically turns on, and moisturizing is carried out to overflow casing by process water feed pipe, from
And maintain the liquid level of overflow casing reclaimed water constant, and the problem of flue gas is revealed is avoided the occurrence of, when needing to discharge deposition slurries,
Motor-driven valve is then opened, the slurries of overflow lower box deposition are discharged through discharging hole, so as to cause under the liquid level of overflow casing reclaimed water
Drop, then ball-cock assembly unlatching, moisturizing is carried out to overflow casing by process water feed pipe, and maintain the water seal in spill box body high
Degree, so as to realize the on-line cleaning to overflow casing.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is top view of the present utility model；
Fig. 3 is the sectional view in A-A directions in Fig. 1.
Wherein, 1 it is overflow casing, 2 be top cover, 3 be bolt, 4 be drain inlet pipeline, 5 is drainage overflow pipe road, 6
It is motor-driven valve for discharging hole, 7,8 be water supplement port, 9 is ball-cock assembly.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, Fig. 2 and Fig. 3, band water seal flue draining overflow mechanism described in the utility model include overflow casing 1,
Drain inlet pipeline 4 and drainage overflow pipe road 5；The top open part of overflow casing 1 is covered with top cover 2, drain inlet pipe
The lower end in road 4 is inserted in overflow casing 1 through top cover 2, and the side at the top of overflow casing 1 is provided with overfall and water supplement port 8,
Drainage overflow pipe road 5 is connected with the overfall of the side of overflow casing 1, and the side of the bottom of overflow casing 1 offers discharging hole 6,
Wherein, water supplement port 8, overfall, the lower end of drain inlet pipeline 4 and discharging hole 6 are sequentially distributed from top to bottom, in water supplement port 8
It is provided with ball-cock assembly 9, the ball float in ball-cock assembly 9 is located on the liquid level at overfall, and ball-cock assembly 9 is connected with process water feed pipe
It is logical.
Top cover 2 is fixed on the top open part of overflow casing 1 by bolt 3；Between drain inlet pipeline 4 and top cover 2
Mutually weld, the upper end of drain inlet pipeline 4 is provided with flange-interface；Drainage overflow pipe road 5 and the angle of horizontal direction are 5 °；
Motor-driven valve 7 is provided with discharging hole 6；The inwall of discharging hole 6 is provided with anticorrosive coat；Anticorrosive coat is glass flake anticorrosive coat.
Specific work process of the present utility model is：
Drain inlet pipeline 4 is connected with flue drainpipe, flue drainpipe is accessed in trench by pipeline, will be floating
The Joining Technology water feed pipe of ball valve 9, ball-cock assembly 9 automatically turns on and the water-filling into overflow casing 1, when liquid level is increased to overflow casing
Under 1 overfall along when, ball-cock assembly 9 is closed, and is stopped to the moisturizing of overflow casing 1.When flue draining is through flue drainpipe and draining
When tube inlet is entered in overflow casing 1, the liquid level of the reclaimed water of overflow casing 1 exceedes the overfall lower edge of overflow casing 1, then makes overflow
Unnecessary water is discharged through overfall in casing 1.When nothing is drained into overflow casing 1 flue drainpipe for a long time, overflow casing 1
Interior moisture evaporation, decline the liquid level of the reclaimed water of overflow casing 1, then ball-cock assembly 9 is opened, by process water feed pipe to spill box
Moisturizing in body 1, maintain the liquid level of the reclaimed water of overflow casing 1 constant.Motor-driven valve 7 at the bottom discharging hole 6 of overflow casing 1 is beaten
When opening, the slurries of the bottom deposit of overflow casing 1 are discharged through discharging hole 6, so as to cause the liquid level of the reclaimed water of overflow casing 1 to decline, are floated
Ball valve 9 is opened, and moisturizing is carried out to overflow casing 1 by process water feed pipe, and maintains the water seal height in overflow casing 1, real
Existing on-line cleaning is without occurring flue gas leakage.
Claims (7)
1. a kind of band water seal flue draining overflow mechanism, it is characterised in that including overflow casing (1), drain inlet pipeline (4)
And drainage overflow pipe road (5)；
The top open part of overflow casing (1) is inserted covered with top cover (2), the lower end of drain inlet pipeline (4) through top cover (2)
Enter in overflow casing (1), the side at the top of overflow casing (1) is provided with overfall and water supplement port (8), drainage overflow pipe road
(5) overfall with overflow casing (1) side is connected, and the side of overflow casing (1) bottom offers discharging hole (6), wherein,
Water supplement port (8), overfall, the lower end of drain inlet pipeline (4) and discharging hole (6) are sequentially distributed from top to bottom, water supplement port (8)
Inside it is provided with ball-cock assembly (9), the ball float in ball-cock assembly (9) is located on the liquid level at overfall, and ball-cock assembly (9) supplies water with process water
Pipe is connected.
2. band water seal flue draining overflow mechanism according to claim 1, it is characterised in that top cover (2) passes through bolt (3)
It is fixed on the top open part of overflow casing (1).
3. band water seal flue draining overflow mechanism according to claim 1, it is characterised in that drain inlet pipeline (4)
Mutually welded between top cover (2), the upper end of drain inlet pipeline (4) is provided with flange-interface.
4. band water seal flue draining overflow mechanism according to claim 1, it is characterised in that drainage overflow pipe road (5) with
The angle of horizontal direction is 5 °.
5. band water seal flue draining overflow mechanism according to claim 1, it is characterised in that discharging hole (6) place is provided with
Motor-driven valve (7).
6. band water seal flue draining overflow mechanism according to claim 1, it is characterised in that the inwall of discharging hole (6) is set
It is equipped with anticorrosive coat.
7. band water seal flue draining overflow mechanism according to claim 6, it is characterised in that anticorrosive coat is prevented for glass flake
Rotten layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720757619.6U CN206888161U (en) | 2017-06-27 | 2017-06-27 | A kind of band water seal flue draining overflow mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720757619.6U CN206888161U (en) | 2017-06-27 | 2017-06-27 | A kind of band water seal flue draining overflow mechanism |
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| Publication Number | Publication Date |
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| CN206888161U true CN206888161U (en) | 2018-01-16 |
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ID=61317183
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720757619.6U Active CN206888161U (en) | 2017-06-27 | 2017-06-27 | A kind of band water seal flue draining overflow mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184316A (en) * | 2018-10-17 | 2019-01-11 | 济南澳海炭素有限公司 | A kind of corrosion-resistant chimney with supporting frame with steel structure |
| CN109457784A (en) * | 2018-12-28 | 2019-03-12 | 启明星宇节能科技股份有限公司 | A kind of flue gas separates drainage arrangement with sewage |
| CN112095758A (en) * | 2020-09-30 | 2020-12-18 | 河南中烟工业有限责任公司 | Prevent excessive seal box of steam |
-
2017
- 2017-06-27 CN CN201720757619.6U patent/CN206888161U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184316A (en) * | 2018-10-17 | 2019-01-11 | 济南澳海炭素有限公司 | A kind of corrosion-resistant chimney with supporting frame with steel structure |
| CN109457784A (en) * | 2018-12-28 | 2019-03-12 | 启明星宇节能科技股份有限公司 | A kind of flue gas separates drainage arrangement with sewage |
| CN112095758A (en) * | 2020-09-30 | 2020-12-18 | 河南中烟工业有限责任公司 | Prevent excessive seal box of steam |
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