CN208765801U - A kind of liquid level measuring system for thermal power plant - Google Patents
A kind of liquid level measuring system for thermal power plant Download PDFInfo
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- CN208765801U CN208765801U CN201821325147.8U CN201821325147U CN208765801U CN 208765801 U CN208765801 U CN 208765801U CN 201821325147 U CN201821325147 U CN 201821325147U CN 208765801 U CN208765801 U CN 208765801U
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- liquid level
- valve
- measurement pipeline
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- pipeline
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Abstract
The utility model discloses a kind of liquid level measuring system for thermal power plant, including tower body, the lower part of tower body is liquid level area, and gypsum area is formed on the bottom in liquid level area；Liquid level area top exterior walls, be upwards tiltedly installed with the first measurement pipeline, first measurement pipeline is connected with liquid level area, first pressure transmitter is installed in the first measurement pipeline, also connection is equipped with the first flushing water pipeline in the first measurement pipeline, is equipped with the first valve in the first flushing water pipeline；Liquid level area bottom and be tiltedly installed with the second measurement pipeline upwards, second measurement pipeline is connected with liquid level area, second pressure transmitter is installed in the second measurement pipeline, also connection is equipped with the second flushing water pipeline in the second measurement pipeline, is equipped with the second valve in the second flushing water pipeline.By the way that the actual liquid levels of slurries in tower can be obtained with this liquid level measuring system, to occur with reducing flooded conditions, to ensure that system is safe and stable, economical operation.
Description
Technical field
The utility model relates to measuring techniques, and in particular to a kind of liquid level measuring system for thermal power plant.
Background technique
Wet desulfurization of flue gas by limestone-gypsum method system is the important component part in thermal power plant, and prewashing tower, absorption tower
Liquid level is then the important operating parameter of wet desulfurization of flue gas by limestone-gypsum method system, is related to desulphurization system the safe and economic operation.
Liquid level is excessively high to cause absorption tower slurries overflow, the too low reduction desulfurization effect of liquid level；Therefore, how to control reasonable prewashing tower, inhale
It receives tower and runs liquid level, it is most important to grasp slurry condition, correct measurement liquid level of slurry in absorption tower.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of liquid for thermal power plant
Level measuring system, preferably to hold slurry condition in absorption tower, correct measurement liquid level of slurry.
To achieve the above object, the technical solution of the utility model is:
The top of a kind of liquid level measuring system for thermal power plant, including tower body, tower body is spraying zone, and lower part is liquid
Gypsum area is formed on the bottom in position area, liquid level area；Blender is installed in tower body, to stir for the deposition to gypsum area
Mix, the liquid level area top exterior walls, be upwards tiltedly installed with the first measurement pipeline, the first measurement pipeline is connected with liquid level area
It is logical, first pressure transmitter is installed in the first measurement pipeline, also connection is equipped with the first flushing in the first measurement pipeline
Waterpipe is equipped with the first valve in the first flushing water pipeline；The liquid level area bottom and apart from gypsum area 0.5-2.0
The outer wall of rice is tiltedly installed with the second measurement pipeline upwards, and the second measurement pipeline is connected with liquid level area, measures pipeline second
In second pressure transmitter is installed, second measurement pipeline in also connection the second flushing water pipeline is installed, second rinse
Second valve is installed in waterpipe.
Third valve is installed at the position that the first measurement pipeline is connected with liquid level area, measures pipeline second
4th valve is installed at the position being connected with liquid level area.
The first measurement pipeline and the second measurement pipeline and tower wall are at 30 degree of angular upper inclination installations.
First valve, the second valve, third valve, the 4th valve are respectively the first solenoid valve, second solenoid valve,
Three solenoid valves, the 4th solenoid valve.
The liquid level measuring system for thermal power plant further includes controller, and the controller is electric with first respectively
Magnet valve, second solenoid valve, third solenoid valve, the 4th solenoid valve, first pressure transmitter and second pressure transmitter are connected,
Controlled by controller the first solenoid valve, second solenoid valve, third solenoid valve, the 4th solenoid valve, first pressure transmitter and
The work of second pressure transmitter.
The tower body is absorption tower or prewashing tower.
The utility model compared with prior art, the beneficial effect is that:
By the way that the actual liquid level of slurries in tower can be obtained with this liquid level measuring system, to go out with reducing flooded conditions
It is existing, to ensure that system is safe and stable, economical operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the liquid level measuring system provided by the embodiment of the utility model for thermal power plant；
In figure: 1, the first measurement pipeline；2, first pressure transmitter；3, the first flushing water pipeline；4, the first valve；5,
Two measurement pipelines；6, second pressure transmitter；7, the second flushing water pipeline；8, the second valve；9, third valve；10, the 4th valve
Door；100, spraying zone；200, liquid level area.
Specific embodiment
The content of the utility model is described in further details with reference to the accompanying drawings and detailed description.
Embodiment:
As shown in fig.1, the liquid level measuring system provided in this embodiment for thermal power plant, including tower body, wherein
The top of tower body is spraying zone 100, and lower part is liquid level area 200, and gypsum area is formed on the bottom in liquid level area；It is equipped with and stirs in tower body
Device (not shown) is mixed, to be stirred for the deposition to gypsum area.
The liquid level area 200 top exterior walls, be upwards tiltedly installed with the first measurement pipeline 1, the first measurement pipeline 1 and liquid
Position area 200 is connected, and is equipped with first pressure transmitter 2 in the first measurement pipeline 1, is also connected in the first measurement pipeline 1
First flushing water pipeline 3 is installed, the first valve 4 is installed in the first flushing water pipeline 3；In the bottom in the liquid level area 200
And outer wall apart from 0.5-2.0 meters of gypsum area, it is tiltedly installed with the second measurement pipeline 5, the installation position of the second measurement pipeline 5 upwards
Set too low be easy by the gypsum slurries influence of natural sediment, excessively high repair and maintenance inconvenience, the second measurement pipeline 5 and liquid level area
200 are connected, and are equipped with second pressure transmitter 6 in the second measurement pipeline 5, the also connection installation in the second measurement pipeline 5
Have the second flushing water pipeline 7, the second valve 8 be installed in the second flushing water pipeline 7, the second measurement 5 horizontal direction of pipeline away from
Two meters of blender or so, rather than tower wall central area between two blenders, avoid central angle from depositing slurries；In first survey
Third valve 9 is installed, in the second measurement pipeline 5 and 200 phase of liquid level area at the position that buret road 1 is connected with liquid level area 200
4th valve 10 is installed at the position of connection.
In this way, opening third valve 9 and the 4th valve 10, it is by first pressure transmitter 2 and second pressure transmitter 6
The pressure value of liquid level area bottom and top can be measured, so as to count indirectly by fluid pressure calculating formula p=ρ gh
Calculate the density of slurries.In formula, p is absorb the bottom of the tower pressure signal；G is acceleration of gravity；ρ is serum density；H is absorption tower
Liquid level is measured, specifically, according to according to pascal's principle, liquid level, pressure, density three changes of liquid in absorption tower, prewashing tower
There is following formula for amount:
Wherein g is acceleration of gravity.Liquid level, pressure in absorption tower, prewashing tower at two different heights are such as
Under:
And
It obtains
When known to Δ H, obtain
For wet desulphurization, core apparatus is prewashing tower, absorption tower, and liquid level is that wet desulfurization system operates normally in tower
Key, wherein absorbing tower liquid-level control is most important to absorption tower stable operation, and liquid level is excessively high, is easy to make in absorption tower horizontal
It weighs out of control, leads to the overflow on absorption tower, liquid level is too low, is easy to make air residence time in tower slurry pool to shorten, system is completely negative
Density is higher when lotus, causes spraying layer abrasion aggravation, how correctly to monitor absorbing tower liquid-level, while preventing false liquid level (foam)
Generation, pay particular attention in operation, due to being that solid-liquid vapour three mixes in tower, since measurement density cannot be really anti-
System real density is mirrored, above-mentioned formula is to seek reduction density, the averag density of the slurries of approximate whole system, is that dynamic is close
Degree, if H1And H2If both knowing about, formula is substituted into, liquid level H can be calculated, closer to actual liquid level, tested by practice
, there are not flooded conditions in card, to ensure that system is safe and stable, economical operation.
Meanwhile the application is equipped with flushing pipe in measurement pipeline by being equipped with, in first pressure transmitter 2 and the
Before two pressure transmitters 6 measure, require to be rinsed that (flushing finishes to the first measurement pipeline 1 and the second measurement pipeline 5
Afterwards, since flushing water pressure is much higher than prewashing tower, absorption tower tower pressure interior force, when flushing, is directly discharged into tower), to prevent deposition
Slurries influence measurement effect, guarantee the accuracy that first pressure transmitter 2 and second pressure transmitter 6 measure, simultaneously because the
One measurement pipeline 1 and the second measurement pipeline 5 are all upward inclination installations, can be effectively prevented the deposition of slurries.
In addition, being found in the primary accidental test of inventor, when the first above-mentioned measurement pipeline 1 and the second measurement pipeline
5 and tower wall at 30 degree of angular upper inclination installations when, prevent the deposition effect of slurries best.
In addition, above-mentioned liquid level measuring system further includes controller (not shown), this first in order to reduce artificial participation
Valve 4, the second valve 8, third valve 9, the 4th valve 10 are respectively the first solenoid valve, second solenoid valve, third solenoid valve, the
Four solenoid valves, the controller become with the first solenoid valve, second solenoid valve, third solenoid valve, the 4th solenoid valve, first pressure respectively
Send device and second pressure transmitter to be connected, controlled by controller the first solenoid valve, second solenoid valve, third solenoid valve,
The work of 4th solenoid valve, first pressure transmitter 2 and second pressure transmitter 6.
For above-described embodiment simply to illustrate that the technical ideas and features of the present invention, its purpose is allows this field
Interior those of ordinary skill can understand the content of the utility model and implement accordingly, can not limit the utility model with this
Protection scope.The equivalent changes or modifications that all essence according to the content of the present invention is made, should all cover in this reality
With in novel protection scope.
Claims (5)
1. the top of a kind of liquid level measuring system for thermal power plant, including tower body, tower body is spraying zone, lower part is liquid level
Gypsum area is formed on the bottom in area, liquid level area；Blender is installed in tower body, to be stirred for the deposition to gypsum area,
It is characterized in that, the liquid level area top exterior walls, be upwards tiltedly installed with the first measurement pipeline, the first measurement pipeline and liquid
Position area is connected, and is equipped with first pressure transmitter in the first measurement pipeline, and also connection is equipped in the first measurement pipeline
First flushing water pipeline is equipped with the first valve in the first flushing water pipeline；The liquid level area bottom and apart from gypsum
Area 0.5-2.0 meters of high outer wall is tiltedly installed with the second measurement pipeline upwards, and the second measurement pipeline is connected with liquid level area,
Second pressure transmitter is installed in second measurement pipeline, also connection is equipped with the second wash tub pipe in the second measurement pipeline
Road is equipped with the second valve in the second flushing water pipeline；At the position that the first measurement pipeline is connected with liquid level area
Third valve is installed, the 4th valve is installed at the position that the second measurement pipeline is connected with liquid level area.
2. being used for the liquid level measuring system in thermal power plant as described in claim 1, which is characterized in that first measurement pipe
Road and the second measurement pipeline and tower wall are at 30 degree of angular upper inclination installations.
3. being used for the liquid level measuring system in thermal power plant as claimed in claim 2, which is characterized in that first valve,
Second valve, third valve, the 4th valve are respectively the first solenoid valve, second solenoid valve, third solenoid valve, the 4th solenoid valve.
4. being used for the liquid level measuring system in thermal power plant as claimed in claim 3, which is characterized in that it further include controller,
The controller respectively with the first solenoid valve, second solenoid valve, third solenoid valve, the 4th solenoid valve, first pressure transmitter with
And second pressure transmitter is connected, and the first solenoid valve, second solenoid valve, third solenoid valve, the 4th electricity are controlled by controller
The work of magnet valve, first pressure transmitter and second pressure transmitter.
5. being used for the liquid level measuring system in thermal power plant as described in claim 1, which is characterized in that the tower body is to absorb
Tower or prewashing tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821325147.8U CN208765801U (en) | 2018-08-16 | 2018-08-16 | A kind of liquid level measuring system for thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821325147.8U CN208765801U (en) | 2018-08-16 | 2018-08-16 | A kind of liquid level measuring system for thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208765801U true CN208765801U (en) | 2019-04-19 |
Family
ID=66132027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821325147.8U Expired - Fee Related CN208765801U (en) | 2018-08-16 | 2018-08-16 | A kind of liquid level measuring system for thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208765801U (en) |
-
2018
- 2018-08-16 CN CN201821325147.8U patent/CN208765801U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190419 Termination date: 20190816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |