CN208110399U - High Precision Automatic aeration device - Google Patents
High Precision Automatic aeration device Download PDFInfo
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- CN208110399U CN208110399U CN201820623395.4U CN201820623395U CN208110399U CN 208110399 U CN208110399 U CN 208110399U CN 201820623395 U CN201820623395 U CN 201820623395U CN 208110399 U CN208110399 U CN 208110399U
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- oxygenation
- pipeline
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Abstract
A kind of High Precision Automatic aeration device, including pressure reducing valve, the pressure reducing valve delivery gauge being arranged on source of oxygen export pipeline；Pipeline after pressure reducing valve delivery gauge divides two-way, all the way setting bypass hand stop valve and manual metering valve；Hand stop valve is arranged in another way, automatic regulating valve and flow sensor, automatic regulating valve connects control system PLC with flow sensor, in the case where automatic running, control system PLC is transmitted to by flow sensor, control system PLC adjusts automatic regulating valve, ensure that the real-time acquisition and control of oxygen-adding amount；Pipeline after manual metering valve and automatic regulating valve merges into pipeline all the way, it is disposed between oxygenation pressure maintaining valve between pressure maintaining valve inlet pressure gauge, oxygenation, suspended body flowmeter, on the spot pressure maintaining valve inlet pressure gauge, on the spot pressure maintaining valve and oxygenation point pressure gauge on the spot on the pipeline, further includes the shut-off valve of the bypass on the spot device being arranged in pressure maintaining valve bypass on the spot；The automatic and accurate that utility model device can be realized feed water oxygenation amount is adjusted.
Description
Technical field
The utility model relates to Power Plant Water Vapor cycle chemistry oxygenation technical fields, add more particularly to one kind is High Precision Automatic
Oxygen device.
Background technique
Boiler oxygenation technology is reinforced corrosion, is subtracted to reduce the scaling rate of boiler tube, prevent stokehold system from flowing occurs
The rate of climb of slow boiler operatiopn pressure difference, the period of prolonged boiler chemical cleaning and reduction water treatment agent consumption.
The generally existing oxygen-adding amount of aeration device is inaccurate at present, not can guarantee to the stability of water-soluble oxygen, reason is main
That oxygen-adding amount did not changed gas sectional area and determined by regulating valve merely, wherein the variation of pressure difference on oxygen-adding amount influence compared with
Greatly, and the pressure of gas source leading portion can remain unchanged substantially, but the pressure of rear end oxygenation point be system for tracking lifting load and
It determines, so influencing whether that pressure difference changes, to influence the accuracy of oxygen-adding amount, then causes to control to water-soluble oxygen unstable
It is fixed.
Since most Power Plants are peaking operation, load changes frequent occurrence, therefore water supply adds in water-steam system
The adjustment of oxygen amount is unable to satisfy the requirement that load frequently changes, and causes to the unstable of water-soluble oxygen, not only influences unit operation
Safety, while also substantially increasing the work difficulty of operations staff.In consideration of it, need one kind be able to achieve it is High Precision Automatic
The device and control algolithm of oxygenation.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the utility model is novel provides a kind of High Precision Automatic aeration device
And automatic oxygenation method guarantees when unit load frequently changes to the stability of water-soluble oxygen.
In order to reach the goals above, the utility model adopts the following technical solution：
A kind of High Precision Automatic aeration device, including pressure reducing valve 1, the display pressure reducing valve being arranged on source of oxygen export pipeline
The pressure reducing valve delivery gauge 2 of outlet pressure；Pipeline after pressure reducing valve delivery gauge 2 divides two-way, and side manually is arranged in all the way
Bypass hand stop valve 3 and manual metering valve 4 under formula, so that it is guaranteed that the normal operation of manual oxygenation；Another way setting is certainly
Hand stop valve 5 under flowing mode, automatic regulating valve 6 and flow sensor 7, automatic regulating valve 6 and the connection control of flow sensor 7
System PLC15 processed, control system PLC 15 connect control system touch screen 16 and pass through flow sensing in the case where automatic running
Device 7 is transmitted to control system PLC 15, and control system PLC 15 adjusts automatic regulating valve 6, ensure that the real-time acquisition of oxygen-adding amount with
Control；Pipeline after manual metering valve 4 and automatic regulating valve 6 merges into pipeline all the way, is disposed between oxygenation on the pipeline
Pressure maintaining valve 9, suspended body flowmeter 10, on the spot pressure maintaining valve inlet pressure gauge 11, on the spot pressure stabilizing between pressure maintaining valve inlet pressure gauge 8, oxygenation
Valve 12 and oxygenation point pressure gauge 13 on the spot, further include the shut-off valve of bypass on the spot 14 being arranged in the bypass of pressure maintaining valve 12 on the spot；It is logical
Pressure maintaining valve 9 between oxygenation is overregulated, pressure at this time is shown on pressure maintaining valve inlet pressure gauge 8 between oxygenation, so that it is determined that motorized adjustment
The pressure difference of 4 front and back of valve 6 and manual metering valve, ensure that the controlled range of oxygen-adding amount；Suspended body flowmeter 10 shows oxygenation at this time
Amount；Pressure maintaining valve 12 ensure that from, to the pressure difference between oxygenation point pipeline, reducing in load fluctuation, this section pipe between oxygenation on the spot
Pressure change between road, on the spot pressure maintaining valve inlet pressure gauge 11, it is shown that pressure maintaining valve inlet pressure on the spot facilitates debugging to make
With；Shut-off valve 14 is bypassed on the spot, is arranged in the bypass of pressure maintaining valve 12 on the spot, is facilitated the maintenance and replacement of pressure maintaining valve；Oxygenation point
Pressure gauge 13 shows at this time the pressure of oxygenation point on the spot on the spot.
Compared to the prior art compared with the utility model has following advantage：
Utility model device is simple and practical and control precision is high, can quickly and accurately adjust unit oxygen-adding amount, meet
To the requirement of water-steam system dissolved oxygen control when unit different load.Compared to current oxygenation control algolithm, dual pressure stabilizing is increased
Pressure maintaining valve 9 and pressure maintaining valve 12 on the spot between device, that is, oxygenation reduce caused oxygen-adding amount fluctuation when load variations；It introduces and gives simultaneously
Water flow obtains oxygen-adding amount needed for reaching desired oxygen dissolving value at this time as feedforward amount, then using flow sensor to oxygenation
Amount signal is acquired in real time, and the oxygen-adding amount that electric control valve reaches required is fast and accurately adjusted convenient for control system PLC, is made
It obtains oxygen dissolving value and is maintained at desired value, to can realize that the automatic and accurate of feed water oxygenation amount is adjusted.It is not only solved using the utility model
It has determined the control problem of water-steam system oxygen-adding amount, and has reduced the workload of operations staff, improved generating set operation
Safety and economy.
Detailed description of the invention
Fig. 1 is the High Precision Automatic aeration device schematic diagram of the utility model.
Specific embodiment
Specific embodiment of the present utility model is further described below with reference to Fig. 1.
As shown in Figure 1, put into operation aeration device when, adjust pressure reducing valve 1, guarantee that in 4Mpa, it is manual to open bypass for outlet pressure
Shut-off valve 3 opens manual metering valve 4, adjusts pressure maintaining valve 9 between oxygenation, guarantees that its inlet pressure in 3.5Mpa, is adjusted steady on the spot
Pressure valve 12 guarantees its inlet pressure in 3Mpa, adjusts manual metering valve 4 later, observes suspended body flowmeter 10, carries out hand to system
Dynamic oxygenation；It is as follows to switch automated procedure, closes bypass hand stop valve 3, hand stop valve 5 is opened, in control system touch screen
The desired value of dissolved oxygen is set on 16, control system PLC 15 will be passed to water-soluble oxygen signal and feedwater flow in real time later, is controlled
System PLC15 obtains oxygenation control amount at this time, while in order to improve the rapidity of the oxygenation in load variations, using to water flow
Signal is measured as feed-forward signal, desired practical oxygen-adding amount is obtained, to ensure that the stability of water-soluble oxygen.
Claims (1)
1. a kind of High Precision Automatic aeration device, it is characterised in that：Including the pressure reducing valve being arranged on source of oxygen export pipeline
(1), the pressure reducing valve delivery gauge (2) of display decompression valve outlet pressure；Pipeline after pressure reducing valve delivery gauge (2) is divided to two
Bypass hand stop valve (3) and manual metering valve (4) under manual mode is arranged in road all the way, so that it is guaranteed that manual oxygenation
It operates normally；The hand stop valve (5) under automated manner, automatic regulating valve (6) and flow sensor (7) is arranged in another way,
Automatic regulating valve (6) and flow sensor (7) connection control system PLC (15), control system PLC (15) connect control system touching
Screen (16) are touched, in the case where automatic running, control system PLC (15), control system are transmitted to by flow sensor (7)
PLC (15) adjusts automatic regulating valve (6), ensure that the real-time acquisition and control of oxygen-adding amount；Manual metering valve (4) and automatic adjustment
Pipeline after valve (6) merges into pipeline all the way, and pressure maintaining valve inlet pressure gauge (8), oxygenation between oxygenation are disposed on the pipeline
Between pressure maintaining valve (9), suspended body flowmeter (10), pressure maintaining valve inlet pressure gauge (11), on the spot pressure maintaining valve (12) and oxygenation point be just on the spot
Ground pressure table (13) further includes the shut-off valve of bypass on the spot (14) being arranged in pressure maintaining valve on the spot (12) bypass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820623395.4U CN208110399U (en) | 2018-04-28 | 2018-04-28 | High Precision Automatic aeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820623395.4U CN208110399U (en) | 2018-04-28 | 2018-04-28 | High Precision Automatic aeration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208110399U true CN208110399U (en) | 2018-11-16 |
Family
ID=64113661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820623395.4U Active CN208110399U (en) | 2018-04-28 | 2018-04-28 | High Precision Automatic aeration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208110399U (en) |
-
2018
- 2018-04-28 CN CN201820623395.4U patent/CN208110399U/en active Active
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