CN208720198U - Continuous blowdown flash tank drainage arrangement - Google Patents
Continuous blowdown flash tank drainage arrangement Download PDFInfo
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- CN208720198U CN208720198U CN201820068236.2U CN201820068236U CN208720198U CN 208720198 U CN208720198 U CN 208720198U CN 201820068236 U CN201820068236 U CN 201820068236U CN 208720198 U CN208720198 U CN 208720198U
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- flash tank
- continuous blowdown
- blowdown flash
- water
- water inlet
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Abstract
The utility model relates to a kind of continuous blowdown flash tank drainage arrangements, including S-shaped drainpipe, the S-shaped drainpipe is connected with the water outlet that continuous blowdown flash tank bottom is arranged in, steam drain is provided at the top of the continuous blowdown flash tank, the steam drain is connected by blow-off line with oxygen-eliminating device, the side of the continuous blowdown flash tank is provided with water inlet, and the water inlet is connected by water inlet pipe with boiler drum continuous blowdown mouth.Not only structure design is simple, reasonable for the utility model, but also has water in S-shaped drainpipe, makes to completely cut off inside continuous blowdown flash tank with ambient atmosphere, forms water seal；When the water level line of the condensed water in continuous blowdown flash tank and continuous blowdown flash tank distance from bottom are greater than B meters, condensed water in continuous blowdown flash tank is automatically drained out, and is reduced construction investment, production cost, is improved reliability of operation, it is easily achieved, has broad application prospects.
Description
Technical field
The utility model relates to a kind of continuous blowdown flash tank drainage arrangements.
Background technique
In boiler island therrmodynamic system, the water supply into boiler drum always has certain salinity, carries out dosing in pot
After processing, the fouling tendency substance of pot water is changed into grain slag, containing various soluble and insoluble impurities in pot water, transports in boiler
In row, these impurity only seldom is taken away by steam by part, and the overwhelming majority stays in pot water, with the continuous evaporation of pot water, this
A little impurity concentrations are gradually increased.In order to control boiler water quality, it is necessary to carry out boiler blow-off, continuous blowdown is exactly to be discharged from drum
The part salt dissolved in pot water, this blowdown are continuously from the maximum evaporating surface discharge of pot water salt concentration, to maintain a pot water
Certain salt content and basicity.Blowdown flow rate accounts about the 2% of boiler capacity, therefore is all recycled again to the heat of this blowdown
It utilizes.The water that drum continuous blowdown goes out is consistent with pot cylinder pressure, is all to have certain pressure, therefore sewerage is first discharged into company
Continuous blowdown dilatancy, when sewage with pressure enters continuous blowdown flash tank, rapid spatial expansion, pressure is reduced rapidly, sewage flash distillation
A large amount of low-pressure steam out, while generating a small amount of condensed water.The low-pressure steam flashed off passes through at the top of continuous blowdown flash tank
Pipeline be sent into oxygen-eliminating device and utilize, condensed water is then stored in continuous blowdown flash tank bottom.To guarantee continuous blowdown flash tank
Flash efficiency and operational safety, the water level of condensed water is unsuitable excessively high, is preferably kept in a relatively-stationary water level, is conducive in this way
The stabilization of system.
It is at present usually to install float-ball type blowdown valve in continuous blowdown flash tank bottom water outlet to expand to control continuous blowdown
Condensed water liquid level in container.Because the opening and closing of float-ball type blowdown valve be it is mechanical, frequent opening and closing causes its failure rate higher, ties up
It is frequent to repair replacement.
Utility model content
In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a kind of continuous blowdown dilatations
Device drainage arrangement, it is not only reasonable in design but also efficiently convenient.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is: a kind of continuous blowdown flash tank draining dress
It sets, including S-shaped drainpipe, the S-shaped drainpipe is connected with the water outlet that continuous blowdown flash tank bottom is arranged in, the company
It is provided with steam drain at the top of continuous blowdown system, the steam drain is connected by blow-off line with oxygen-eliminating device, described continuous
The side of blowdown system is provided with water inlet, and the water inlet is connected by water inlet pipe with boiler drum continuous blowdown mouth
It connects.
Further, the water intake end of the S-shaped drainpipe is connected with water outlet, and the S-shaped drainpipe is vertical downward first
A meters, again 180 ° of extension upwardly extends A+B meters, again 180 ° and extends downwardly extraction, the A > 0, the B > 0.
Further, the distance between the water inlet and continuous blowdown flash tank bottom are C meters, the C > B.
Further, the water inlet pipe is in U-shape, and the water outlet of the water inlet pipe is along in continuous blowdown flash tank
Mandrel direction upwardly extends, and curved baffle, the water inlet of the water inlet pipe are provided with above the water outlet of the water inlet pipe
End is connected with boiler drum continuous blowdown mouth.
Further, the continuous blowdown flash tank is provided with wire netting below steam drain.
Compared with prior art, the utility model has the following beneficial effects: the utility model not only structure design it is simple,
Rationally, and in S-shaped drainpipe there is water, makes to completely cut off inside continuous blowdown flash tank with ambient atmosphere, form water seal；When continuous
When the water level line and continuous blowdown flash tank distance from bottom of condensed water in blowdown system are greater than B meters, continuous blowdown flash tank
Interior condensed water is automatically drained out, and is reduced construction investment, production cost, is improved reliability of operation, it is easy to accomplish, have wide
Wealthy application prospect.
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the organigram of the utility model embodiment.
In figure: 1-S shape drainpipe, 2- continuous blowdown flash tank, 3- water outlet, 4- steam drain, 5- blow-off line, 6- deoxygenation
Device, 7- water inlet, 8- water inlet pipe, 9- boiler drum, 10- curved baffle, 11- wire netting.
Specific embodiment
In order to make the above-mentioned features and advantages of the utility model more obvious and understandable, special embodiment below, and cooperate attached drawing,
It is described in detail below.
As shown in Figure 1, a kind of continuous blowdown flash tank drainage arrangement, including S-shaped drainpipe 1, the S-shaped drainpipe 1 with
The water outlet 3 that 2 bottom of continuous blowdown flash tank is arranged in is connected, and the top of the continuous blowdown flash tank 2 is provided with steam discharge
Mouthfuls 4, the steam drain 4 is connected by blow-off line 5 with oxygen-eliminating device 6, the side of the continuous blowdown flash tank 2 be provided with into
The mouth of a river 7, the water inlet 7 are connected by water inlet pipe 8 with 9 continuous blowdown mouth of boiler drum.
In the utility model embodiment, the water intake end of the S-shaped drainpipe 1 is connected with water outlet 3, the S-shaped draining
Pipe 1 first it is vertical extend downwardly A meters, again 180 ° and upwardly extend A+B meters, again 180 ° extend downwardly extraction, the A > 0, the B
> 0.
In the utility model embodiment, the distance between the water inlet 7 and 2 bottom of continuous blowdown flash tank are C meters,
The C > B.
In the utility model embodiment, the water inlet pipe 8 is in U-shape, and the water outlet of the water inlet pipe 8 is along continuous
The central axis direction of blowdown system 2 upwardly extends, and is provided with curved baffle 10 above the water outlet of the water inlet pipe 8,
The water inlet end of the water inlet pipe 8 is connected with 9 continuous blowdown mouth of boiler drum；Into the dirt of the continuous blowdown flash tank 2
Water introduces its axial centre by water inlet pipe 8, and water discharging direction vertically upward, in the case where being avoided that sewage quantity is big, flashes wink
Between, steam is poured to the water of 2 bottom of continuous blowdown flash tank, causes water slug, equipment is damaged；After flash distillation
Water particle impacts after the curved baffle 10 the water area for falling to 2 bottom of continuous blowdown flash tank, and steam then flows upwards,
First separation can be carried out to the steam water interface that flash distillation moment generates.
In the utility model embodiment, the continuous blowdown flash tank 2 is provided with wire netting in the lower section of steam drain 4
11.The wire netting 11 carries out secondary separation to the residual moisture carried in steam and is mentioned with further decreasing the moisture content of steam
Height enters the cleanliness of 6 steam of oxygen-eliminating device.
In the utility model embodiment, the lower part of the S-shaped drainpipe 1 is placed in heat exchange box, to utilize condensed water
Waste heat, the water body in the heat exchange box is preheated, while the thermal pollution of sewage can be reduced.
The utility model is not limited to above-mentioned preferred forms, anyone can obtain under the enlightenment of the utility model
Other various forms of continuous blowdown flash tank drainage arrangements out.All impartial changes done according to present utility model application the scope of the patents
Change and modify, should all belong to the covering scope of the utility model.
Claims (5)
1. a kind of continuous blowdown flash tank drainage arrangement, it is characterised in that: including S-shaped drainpipe, the S-shaped drainpipe and setting
Water outlet in continuous blowdown flash tank bottom is connected, and steam drain is provided at the top of the continuous blowdown flash tank, described
Steam drain is connected by blow-off line with oxygen-eliminating device, and the side of the continuous blowdown flash tank is provided with water inlet, it is described enter
The mouth of a river is connected by water inlet pipe with boiler drum continuous blowdown mouth.
2. continuous blowdown flash tank drainage arrangement according to claim 1, it is characterised in that: the S-shaped drainpipe enters
Water end (W.E.) is connected with water outlet, and the S-shaped drainpipe is vertical first to be extended downwardly A meters, again 180 ° and upwardly extend A+B meters, again 180 °
Extend downwardly extraction, the A > 0, the B > 0.
3. continuous blowdown flash tank drainage arrangement according to claim 2, it is characterised in that: the water inlet and continuous row
The distance between dirty flash vessel bottom is C meters, the C > B.
4. continuous blowdown flash tank drainage arrangement according to claim 1, it is characterised in that: the water inlet pipe is in U-shape,
The water outlet of the water inlet pipe is upwardly extended along the central axis direction of continuous blowdown flash tank, the water outlet of the water inlet pipe
Curved baffle is provided with above end, the water inlet end of the water inlet pipe is connected with boiler drum continuous blowdown mouth.
5. continuous blowdown flash tank drainage arrangement according to claim 1, it is characterised in that: the continuous blowdown flash tank
Wire netting is provided with below steam drain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820068236.2U CN208720198U (en) | 2018-01-16 | 2018-01-16 | Continuous blowdown flash tank drainage arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820068236.2U CN208720198U (en) | 2018-01-16 | 2018-01-16 | Continuous blowdown flash tank drainage arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208720198U true CN208720198U (en) | 2019-04-09 |
Family
ID=65968657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820068236.2U Active CN208720198U (en) | 2018-01-16 | 2018-01-16 | Continuous blowdown flash tank drainage arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208720198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539406A (en) * | 2020-12-07 | 2021-03-23 | 江苏中伟机械制造有限公司 | A discharge flash tank for power plant discharges sewage |
-
2018
- 2018-01-16 CN CN201820068236.2U patent/CN208720198U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539406A (en) * | 2020-12-07 | 2021-03-23 | 江苏中伟机械制造有限公司 | A discharge flash tank for power plant discharges sewage |
| CN112539406B (en) * | 2020-12-07 | 2023-12-19 | 江苏中伟机械制造有限公司 | Discharge expander for discharging sewage of power plant |
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