CN208345865U - A kind of power plant automatic feeding formula full guard accurate oxygen-adding device - Google Patents
A kind of power plant automatic feeding formula full guard accurate oxygen-adding device Download PDFInfo
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- CN208345865U CN208345865U CN201820729611.3U CN201820729611U CN208345865U CN 208345865 U CN208345865 U CN 208345865U CN 201820729611 U CN201820729611 U CN 201820729611U CN 208345865 U CN208345865 U CN 208345865U
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Abstract
A kind of power plant automatic feeding formula full guard accurate oxygen-adding device; the air provided using blower is as oxygenation oxygen sources; and compressed air is set to boost to the stress levels of needs by booster pump; i.e. compressed air pressure is greater than oxygenation point pressure, the oxygenation requirement that realization draining system, water supply system and condensate system automatic feeding, water-steam system are protected comprehensively；PLC control cabinet is according to water sample (hydrophobic, water supply, condensed water) flow and quasi- control water sample dissolved oxygen concentration value, coarse adjustment is carried out to flow control valve, fine tuning is carried out further according to water sample dissolved oxygen meter practical measurement signals and quasi- control water sample dissolved oxygen concentration value, since flow control valve working media is atmospheric air, the adjusting of flow control valve aperture also carries out under normal pressure operating condition, it is not influenced by gas compressibility during both air flow modulation, realizes that accurate oxygenation is adjusted.
Description
Technical field
The utility model relates to power plant heat power equipment corrosion protection technology fields more particularly to a kind of power plant to supply automatically
Gas formula full guard accurate oxygen-adding device.
Background technique
To prevent a series of pairs of water supply system, the accelerated corrosion of HP heater drainage system flow and its bring unit operations not
Benefit influences, and super (super-) critical unit is apparent using the necessity of combined water treatment.However, due to worrying superheater, again
Hot device oxide skin problem, the country still have many super (super-) critical units not use oxygenated treatment.
Full guard combined water treatment refers to and carries out oxygenation to condensed water, water supply, HP heater drainage system respectively.Keep dissolution
Oxygen concentration meets water supply, the passivation of HP heater drainage system requires, can take into account stokehold water supply system, high-pressure heater vapour side it is anti-
Corruption, simultaneously because the concentration of oxygen is close to zero in superheated steam, there is no promote superheater oxide skin to concentrate the risk to fall off.Cause
This, full guard combined water treatment is to solve supercritical unit water-steam system corrosion and scaling, improves unit performance driving economy most
For the oxygenated treatment method of safety.
Traditional aeration device is mainly made of oxygen cylinder, busbar connector, oxygen flux control equipment, oxygen conveying pipe line etc..
A collection of oxygen cylinder is stored between oxygenation and constitutes major hazard source, increases operational safety risk.Operations staff needs inspection gas cylinder
Pressure, periodic replacement gas cylinder carry out airtight test after replacing gas cylinder every time, and operation and maintenance amount is big.Traditional aeration device
Oxygenation method be that oxygen-adding amount is carried out under the conditions of supply gas pressure using the pressure difference between gas cylinder and oxygenation point as oxygenation power
It adjusts, due to the features such as gas has compressibility, and oxygenation flow is small, oxygenation pressure is high, oxygenation control precision is very poor, on the one hand
It increases operation maintenance personnel and frequently adjusts workload, the extra oxygen of another aspect water supply enters vapour system, increases promotion
Steam side oxide skin concentrates the risk peeled off, and is unfavorable for the safe and economic operation of unit.
Therefore, it develops and a kind of can be realized that automatic feeding, automatic and accurate oxygenation is adjusted, water-steam system protected comprehensively
Aeration device becomes and ensures unit safety economical operation, and the workload for reducing operation maintenance personnel to the maximum extent is urgently to be resolved
Technical problem.
Summary of the invention
The purpose of this utility model is to provide a kind of safe and reliable, economic, power plant automatic feeding formula all risk insurances for saving trouble
Accurate oxygen-adding device is protected, so that compressed air is boosted as oxygenation oxygen sources, and by booster pump using the air that blower provides
To the stress level of needs, i.e. compressed air pressure is greater than oxygenation point pressure, realizes draining system, water supply system and condensed water
System automatic feeding, the comprehensively requirement of protection oxygenation；PLC control cabinet is according to water sample (hydrophobic, water supply, condensed water) flow and quasi- control
Water sample dissolved oxygen concentration value processed carries out coarse adjustment to flow control valve, further according to water sample (hydrophobic, water supply, condensed water) dissolved oxygen meter
Practical measurement signals and quasi- control water sample dissolved oxygen concentration value carry out fine tuning, since flow control valve working media is that normal pressure is empty
Gas, the adjusting of flow control valve aperture also carry out under normal pressure operating condition, not by gas compressibility during both air flow modulation
It influences, realizes that accurate oxygenation is adjusted.
In order to achieve the above objectives, the technical solution adopted in the utility model is as follows:
A kind of power plant automatic feeding formula full guard accurate oxygen-adding device, the aeration device include and blower 1 and air
The oxygenation pipeline 3 that purification device 2 connects, air-supplying valve of the air after air cleaning unit 2 by being mounted on oxygenation pipeline 3
Tri- road 4 Fen Wei is disposed with first flow regulating valve 5-1, the first air flow meter 6-1, first on first via oxygenation pipeline
Booster pump 7-1, first pressure gauge 8-1 and the first oxygenation shut-off valve 9-1 are disposed with second flow on the second road oxygenation pipeline
Regulating valve 5-2, the second air flow meter 6-2, the second booster pump 7-2, second pressure gauge 8-2 and the second oxygenation shut-off valve 9-2, the
Third flow control valve 5-3, third air flow meter 6-3, third booster pump 7-3, are disposed on three road oxygenation pipelines
Three pressure gauge 8-3 and third oxygenation shut-off valve 9-3, the first oxygenation shut-off valve 9-1, the second oxygenation shut-off valve 9-2, third oxygenation close
Disconnected valve 9-3 is respectively connected to power plant draining system oxygenation point 10-1, feed water supply system of power plant oxygenation point by oxygenation pipeline 3
10-2 and power plant condensate system oxygenation point 10-3, the power plant downstream draining system oxygenation point 10-1, feed water supply system of power plant
The oxygenation downstream point 10-2 and the power plant downstream condensate system oxygenation point 10-3 are respectively arranged with hydrophobic flowmeter 11-1, hydrophobic
Dissolved oxygen meter 12-1, feed meter 11-2, water supply dissolved oxygen meter 12-2 and condensing water flow meter 11-3, condensed water dissolved oxygen
Table 12-3 further includes and blower 1, first flow regulating valve 5-1, second flow regulating valve 5-2, third flow control valve 5-3,
One air flow meter 6-1, the second air flow meter 6-2, third air flow meter 6-3, the first booster pump 7-1, the second booster pump
7-2, third booster pump 7-3, hydrophobic flowmeter 11-1, hydrophobic dissolved oxygen meter 12-1, feed meter 11-2, water supply dissolved oxygen meter
12-2, condensing water flow meter 11-3 and the PLC control cabinet 13 of condensed water dissolved oxygen meter 12-3 connection.
The blower 1 is that converting operation blower or fixed frequency run blower.
The first booster pump 7-1, the second booster pump 7-2, third booster pump 7-3 are single stage supercharging pump or multi-stage booster
Pump, air pressure is greater than power plant draining system oxygenation point 10-1, feed water supply system of power plant oxygenation point 10-2, power plant after pressurization
The pressure of condensate system oxygenation point 10-3.
Compared to the prior art the utility model has the advantage that
(1) pure oxygen is used compared to traditional aeration device, the utility model uses air as oxygen sources, is greatly improved and adds
Oxygen safety in operation；
(2) inspection storage pressure, periodic replacement gas cylinder are needed compared to traditional aeration device, replaces the laggard promoting the circulation of qi of gas cylinder every time
Close property inspection, the utility model realize oxygenation automatic feeding, do not need replacement gas cylinder, greatly reduce operations staff's maintenance work
Amount；
(3) compared to traditional aeration device oxygenation method control accuracy difference, operations staff adjusts heavy workload, and water supply is extra
Oxygen enters vapour system and increases the risk for promoting steam side oxide skin to concentrate peeling, is unfavorable for the safe and economic operation of unit, this
Utility model flow control valve working media is atmospheric air, and the adjusting of flow control valve aperture also carries out under normal pressure operating condition,
It is not influenced by gas compressibility during both air flow modulation, realizes that accurate oxygenation is adjusted.
Detailed description of the invention
Fig. 1 is the utility model power plant automatic feeding formula full guard accurate oxygen-adding device schematic diagram.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of power plant automatic feeding formula full guard accurate oxygen-adding device of the utility model, the oxygenation dress
The oxygenation pipeline 3 including connecting with blower 1 and air cleaning unit 2 is set, air adds after air cleaning unit 2 by being mounted on
Tri- road 4 Fen Wei of air-supplying valve on oxygen pipeline 3 is disposed with first flow regulating valve 5-1, first on first via oxygenation pipeline
Air flow meter 6-1, the first booster pump 7-1, first pressure gauge 8-1 and the first oxygenation shut-off valve 9-1, on the second road oxygenation pipeline
It is disposed with second flow regulating valve 5-2, the second air flow meter 6-2, the second booster pump 7-2, second pressure gauge 8-2 and
Dioxygenase shut-off valve 9-2 is disposed with third flow control valve 5-3, third air flow meter 6- on the oxygenation pipeline of third road
3, third booster pump 7-3, third pressure gauge 8-3 and third oxygenation shut-off valve 9-3, the first oxygenation shut-off valve 9-1, the second oxygenation close
Disconnected valve 9-2, third oxygenation shut-off valve 9-3 are respectively connected to power plant draining system oxygenation point 10-1, power generation by oxygenation pipeline 3
Under factory water supply system oxygenation point 10-2 and power plant condensate system oxygenation point 10-3, power plant draining system oxygenation point 10-1
Trip, the feed water supply system of power plant oxygenation downstream point 10-2 and the power plant downstream condensate system oxygenation point 10-3 are respectively arranged with thin
Water ga(u)ge 11-1, hydrophobic dissolved oxygen meter 12-1, feed meter 11-2, water supply dissolved oxygen meter 12-2 and condensing water flow meter
11-3, condensed water dissolved oxygen meter 12-3 further include and blower 1, first flow regulating valve 5-1, second flow regulating valve 5-2,
Three flow control valve 5-3, the first air flow meter 6-1, the second air flow meter 6-2, third air flow meter 6-3, first increase
Press pump 7-1, the second booster pump 7-2, third booster pump 7-3, hydrophobic flowmeter 11-1, hydrophobic dissolved oxygen meter 12-1, feedwater flow
Count 11-2, water supply dissolved oxygen meter 12-2, condensing water flow meter 11-3 and the PLC control cabinet of condensed water dissolved oxygen meter 12-3 connection
13。
As preferred embodiments of the present invention, the blower 1 is that converting operation blower or fixed frequency run wind
Machine.
As preferred embodiments of the present invention, the first booster pump 7-1, the second booster pump 7-2, third pressurization
Pumping 7-3 is that single stage supercharging pumps or multi-stage booster pumps, and air pressure is greater than power plant draining system oxygenation point 10-1, power generation after pressurization
The pressure of factory water supply system oxygenation point 10-2, power plant condensate system oxygenation point 10-3.
As shown in Figure 1, the accurate oxygenation method of the utility model power plant automatic feeding formula full guard accurate oxygen-adding device,
Each valve of system is in close state before starting.Air-supplying valve 4 is opened, blower 1 is started by PLC control cabinet 10, blower 1 generates
Air be divided into three tunnels after the air cleaning unit 2 and air-supplying valve 4 that are mounted on oxygenation pipeline 3, PLC control cabinet 13
According to hydrophobic flowmeter 12-1 on each road oxygenation pipeline, feed meter 12-2, condensing water flow meter 12-3 feedback it is hydrophobic, give
Water, condensed water flow respectively to first flow regulating valve 5-1, second flow regulating valve 5-2 and third flow control valve 5-3
Aperture carries out coarse adjustment, so that the first air flow meter 6-1, the second air flow meter 6-2 and third air flow meter 6-3 are shown respectively
The air mass flow Q that road is addedairFor correspondence is hydrophobic, water supply and condensing water flow QwaterMultiplied by the hydrophobic, water supply of quasi- control and condensed water
Dissolved oxygen concentration value Coxygen5~10 times, i.e. Qair=Qwater×Coxygen× 5~10, due to dissolved oxygen each draining system,
There is consumption in water supply system and condensate system, PLC control cabinet 13 is according to hydrophobic dissolved oxygen meter 12-1, water supply dissolved oxygen meter 12-2
The dissolved oxygen concentration of hydrophobic, water supply, condensed water with condensed water dissolved oxygen meter 12-3 actual measurement feedback is respectively to first flow
The aperture of regulating valve 5-1, second flow regulating valve 5-2 and third flow control valve 5-3 carry out fine tuning, control hydrophobic, water supply and
The dissolved oxygen concentration of condensed water is target value Coxygen, while PLC control cabinet 10 passes through the first booster pump 7-1 of control, the second pressurization
7-2 and third booster pump 7-3 work is pumped, so that first pressure gauge 8-1, second pressure gauge 8-2 and third pressure gauge 8-3 were shown
Air pressure is respectively greater than power plant draining system oxygenation point 10-1, feed water supply system of power plant oxygenation point 10-2 and hair after pressurization
The pressure of power plant condensation water system oxygenation point 10-3 realizes draining system on each road oxygenation pipeline, water supply system and condensation water system
System is continuous, reliably and accurately oxygenation.
The working media of the first flow regulating valve 5-1, second flow regulating valve 5-2 and third flow control valve 5-3
For atmospheric air, the adjusting of flow control valve aperture also carries out under normal pressure, not by gas compressibility in flow adjustment process
It influences, degree of regulation is high.
Claims (3)
1. a kind of power plant automatic feeding formula full guard accurate oxygen-adding device, it is characterised in that: the aeration device includes and wind
The oxygenation pipeline (3) of machine (1) and air cleaning unit (2) connection, air is after air cleaning unit (2) by being mounted on oxygenation
Air-supplying valve (4) on pipeline (3) is divided into three tunnels, be disposed on the first via oxygenation pipeline first flow regulating valve (5-1),
First air flow meter (6-1), the first booster pump (7-1), first pressure gauge (8-1) and the first oxygenation shut-off valve (9-1), second
Second flow regulating valve (5-2), the second air flow meter (6-2), the second booster pump (7- are disposed on the oxygenation pipeline of road
2), second pressure gauge (8-2) and the second oxygenation shut-off valve (9-2) are disposed with third flow tune on the oxygenation pipeline of third road
Save valve (5-3), third air flow meter (6-3), third booster pump (7-3), third pressure gauge (8-3) and third oxygenation shut-off valve
(9-3), the first oxygenation shut-off valve (9-1), the second oxygenation shut-off valve (9-2), third oxygenation shut-off valve (9-3) pass through oxygenation pipeline
(3) it is solidifying that power plant draining system oxygenation point (10-1), feed water supply system of power plant oxygenation point (10-2) and power plant are respectively connected to
Bear water system oxygenation point (10-3), the downstream power plant draining system oxygenation point (10-1), feed water supply system of power plant oxygenation point (10-
2) downstream and the downstream power plant condensate system oxygenation point (10-3) are respectively arranged with hydrophobic flowmeter (11-1), hydrophobic dissolution
Oxygen table (12-1), feed meter (11-2), water supply dissolved oxygen meter (12-2) and condensing water flow meter (11-3), condensation are water-soluble
It solves oxygen table (12-3), further includes and blower (1), first flow regulating valve (5-1), second flow regulating valve (5-2), third flow
Regulating valve (5-3), the first air flow meter (6-1), the second air flow meter (6-2), third air flow meter (6-3), first
Booster pump (7-1), the second booster pump (7-2), third booster pump (7-3), hydrophobic flowmeter (11-1), hydrophobic dissolved oxygen meter (12-
1), feed meter (11-2), water supply dissolved oxygen meter (12-2), condensing water flow meter (11-3) and condensed water dissolved oxygen meter
The PLC control cabinet (13) of (12-3) connection.
2. power plant automatic feeding formula full guard accurate oxygen-adding device according to claim 1, it is characterised in that: the wind
Machine (1) is that converting operation blower or fixed frequency run blower.
3. power plant automatic feeding formula full guard accurate oxygen-adding device according to claim 1, it is characterised in that: described
One booster pump (7-1), the second booster pump (7-2), third booster pump (7-3) are that single stage supercharging pumps or multi-stage booster pumps, after pressurization
Air pressure is greater than power plant draining system oxygenation point (10-1), feed water supply system of power plant oxygenation point (10-2), power plant condensation
The pressure of water system oxygenation point (10-3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820729611.3U CN208345865U (en) | 2018-05-16 | 2018-05-16 | A kind of power plant automatic feeding formula full guard accurate oxygen-adding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820729611.3U CN208345865U (en) | 2018-05-16 | 2018-05-16 | A kind of power plant automatic feeding formula full guard accurate oxygen-adding device |
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| CN208345865U true CN208345865U (en) | 2019-01-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108569776A (en) * | 2018-05-16 | 2018-09-25 | 西安热工研究院有限公司 | A kind of power plant automatic feeding formula full guard accurate oxygen-adding device and oxygenation method |
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2018
- 2018-05-16 CN CN201820729611.3U patent/CN208345865U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108569776A (en) * | 2018-05-16 | 2018-09-25 | 西安热工研究院有限公司 | A kind of power plant automatic feeding formula full guard accurate oxygen-adding device and oxygenation method |
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