CN208237846U - A kind of constant pressure oxygen-eliminating device - Google Patents
A kind of constant pressure oxygen-eliminating device Download PDFInfo
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- CN208237846U CN208237846U CN201721770385.5U CN201721770385U CN208237846U CN 208237846 U CN208237846 U CN 208237846U CN 201721770385 U CN201721770385 U CN 201721770385U CN 208237846 U CN208237846 U CN 208237846U
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- oxygen
- eliminating device
- constant pressure
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- regulating valve
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Abstract
The utility model provides a kind of constant pressure oxygen-eliminating device, utilizes the operating pressure in regulating valve automatic adjustment oxygen-eliminating device.A kind of technical solution of constant pressure oxygen-eliminating device of the utility model includes: oxygen-eliminating device ontology, deoxygenation pipeline is communicated on the oxygen-eliminating device ontology, the deoxygenation pipeline is equipped at least one regulating valve, when the current detection information of the oxygen-eliminating device ontology and set information are inconsistent, the aperture of the regulating valve is adjustable.
Description
Technical field
The utility model relates to deaerating plant technical fields, and in particular to a kind of constant pressure oxygen-eliminating device.
Background technique
During boiler feedwater treatment process, deoxygenation is a very crucial link.Oxygen is the master of the feed water system of boiler
The main reason for wanting corrosive substance, being feed-tank, feedwater piping, feed pump and boiler corrosion, the oxygen in water supply system should
It is removed rapidly, otherwise it can corrode the water supply system and component of boiler, and corrosive substance iron oxide can enter in boiler, sink
Product is attached on boiler tube wall and heating surface, forms indissoluble and the undesirable iron dirt that conducts heat, and the iron dirt of corrosion will cause in pipeline
Wall appearance point hole, resistance coefficient increase.When corrosive pipeline is serious, or even pipeline bursting accident can occur.Therefore, in boiler water
Dissolved oxygen must reach the boiler water quality standards requirement of national regulation, be reduced as much as possible to the content of oxygen in water, boiler
Pressure is higher, and permitted specified value is lower.Shown in the GB/T1576-2008 " Industrial Boiler water quality " taken passages such as Fig. 1, steam copper
The water supply of furnace should be handled using furnace outer chemical, rated capacity≤4t/h, and nominal steam pressure≤1.3Mpa steam boiler
Can also be used agent-feeding treatment in furnace, but must fouling, corrosion and water quality supervision to boiler, conscientiously carry out dosing, blowdown
And cleaning；Deoxygenation is answered as boiler rating >=10t/h, the boiler of rated capacity < 10t/h such as finds part
When corrosion, deoxygenation measure should be taken.
The basic principle of thermal de-aeration is Henry's law and Dalton's law, for the various gases being dissolved in water, such as
Shown in Fig. 2, the temperature of water is higher under pressure, and solubility is lower.Thermal deaerator is exactly to utilize steam water supply
When the saturation temperature being heated under relevant pressure, for vapor partial pressure power close to the total pressure on the water surface, what is be dissolved in the water is various
Gas partial pressure is close to zero.In this case, water does not just have the ability of dissolved gas, the gas evolution being dissolved in the water
(including CO2, N2).Water after deoxygenation not will increase salt content, will not increase other gas meltages.
Oxygen-eliminating device is as common apparatus, and to guarantee that equipment has reliable deaerating effect in thermal de-aeration, design is principle
It is water to be heated within the scope of 102-105 DEG C, while spraying into more quantity of steam and being maintained with the operating pressure for guaranteeing deoxygenation water tank
In 0.2bar, it is ensured that the operating temperature of water tank is not less than 102 DEG C, and the water after ensureing deoxygenation does not re-dissolve oxygen.
But when equipment installation height above sea level variation, equipment will be changed using operating condition (atmospheric pressure),
System working pressure will change correspondingly, and deaerated water boiling temperature changes, as seen from Figure 3, when equipment installs height above sea level
Height is at 1500 meters, atmospheric pressure 84KPa, and the boiling temperature of water is 95 DEG C or so, and water oxygen meltage is in 1mg/l this moment
Left and right, is unable to satisfy≤the requirement of 0.1mg/L, and deaerating effect is affected.It is to reach equipment design and operation pressure in use process
Force parameter reaches lifting means internal pressure often through quantity of steam is increased, to reach the boiling point requirement for promoting water, so
Operation excludes a large amount of steam from oxygen outlet, waste of energy, while can also cause thermal pollution to environment.Therefore work as oxygen-eliminating device
When installation ground atmospheric pressure differs larger with design (standard atmospheric pressure), equipment operating pressure changes therewith, the boiling point meeting of water
It is reduced as atmospheric pressure reduces, the boiling temperature of water is just unable to satisfy deoxygenation design requirement deoxygenation temperature, if by increasing
Quantity of steam is met the requirements, and also results in energy waste.To reach deoxygenation design condition, while meeting power conservation requirement, it need to be to deoxygenation
System optimizes.
Utility model content
The utility model provides a kind of constant pressure oxygen-eliminating device, utilizes the operating pressure in regulating valve automatic adjustment oxygen-eliminating device.
A kind of technical solution of constant pressure oxygen-eliminating device of the utility model includes:
Oxygen-eliminating device ontology, deoxygenation pipeline is communicated on the oxygen-eliminating device ontology, and the deoxygenation pipeline is equipped at least one
Regulating valve, when the current detection information of the oxygen-eliminating device ontology and set information are inconsistent, the aperture of the regulating valve is adjustable.
Preferably, pressure sensor is additionally provided on the oxygen-eliminating device ontology.
Preferably, the pressure sensor is located at the top of the oxygen-eliminating device ontology.
Preferably, safety valve is additionally provided on the oxygen-eliminating device ontology.
Preferably, vacuum breaker device is additionally provided on the oxygen-eliminating device ontology.
Preferably, regulating valve there are two being set on the deoxygenation pipeline.
Beneficial effect by adopting the above technical scheme is:
The deoxygenation pipeline installation and adjustment valve of constant pressure oxygen-eliminating device in the present embodiment installs pressure sensing on oxygen-eliminating device ontology
Device, regulating valve and pressure sensor are connect with controller, and controller is reached by acquiring information to the aperture of adjusting control valve
Pressure is controlled, to control water boiling required temperature (102-105 DEG C), while installing safety valve and broken sky additional on deoxygenation pipeline
Valve, to guarantee equipment pressure security.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the GB/T1576-2008 " Industrial Boiler water quality " taken passages；
Fig. 2 is the relational graph of temperature and dissolved oxygen；
Fig. 3 is height above sea level and atmospheric pressure relational graph；
Fig. 4 is the structure chart of the present embodiment constant pressure oxygen-eliminating device；
Fig. 5 is the structure chart of the present embodiment constant pressure oxygen-eliminating device and its control system.
Specific embodiment
The utility model provides a kind of constant pressure oxygen-eliminating device, utilizes the operating pressure in regulating valve automatic adjustment oxygen-eliminating device.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In view of when oxygen-eliminating device operating pressure changes or is unable to satisfy deoxygenation design requirement pressure, the boiling temperature of water
Degree also converts therewith, and to reach deoxygenation design condition, the application optimizes deaerating type of cycles.
As shown in Figure 4 and Figure 5, a kind of technical solution of constant pressure oxygen-eliminating device includes:
Oxygen-eliminating device ontology 1, deoxygenation pipeline is communicated on the oxygen-eliminating device ontology 1, and the deoxygenation pipeline is equipped with regulating valve
2；
Controller 4, the controller 4 are connect with the regulating valve 2, according to the current detection information control got
The aperture of regulating valve 2.
In the present embodiment, the installation and adjustment valve 2 on the deoxygenation pipeline of constant pressure oxygen-eliminating device is equipped with temperature on constant pressure oxygen-eliminating device
Ancillary equipments, the current detection information that ancillary equipment is measured such as degree meter, water-level gauge, flowmeter are sent to the input of controller 4
Calculation processing resume module, then controller 4 issues signal to the regulating valve 2 that is mounted on deoxygenation pipeline to control its aperture,
The internal process pressure of constant pressure oxygen-eliminating device is adjusted, guarantee meets deoxygenation temperature in 104 ± 1.5 DEG C, operating pressure 0.2barg and oxygen
Meltage≤0.1mg/L process requirements realize the automatic control of constant pressure oxygen-eliminating device.
Specifically, if controller 4 is PID controller input calculation processing module can be equipped in controller 4, input calculates
It is stored with preset value in processing module, preset value is operation/design pressure 0.02/0.12MPa, on constant pressure oxygen-eliminating device
Thermometer obtain the current temperature value in current oxygen-eliminating device ontology 1 and be sent to input calculation processing module, Current Temperatures are low
When preset value, signal is issued to regulating valve 2 again after the processing of temperature signal via controller 4, automatic adjustment regulating valve 2 is opened
Degree, and then 1 internal pressure of oxygen-eliminating device ontology is controlled, achieve the purpose that control temperature.
In the technical solution of above-mentioned constant pressure oxygen-eliminating device,
Pressure sensor 3 is additionally provided on the oxygen-eliminating device ontology 1, pressure sensor 3 is connect with controller 4, the pressure
Sensor 3 is for acquiring the current pressure values (i.e. current detection signal) in the oxygen-eliminating device ontology 1 and sending a signal to control
Device 4.Controller 4 adjusts the aperture of regulating valve 2 after treatment, so that oxygen-eliminating device ontology 1 reaches setup pressure value, to control
Water boiling required temperature.
In addition, being additionally provided with safety valve on the oxygen-eliminating device ontology 1, moved in time when superpressure (high pressure) situation occurs in system
Make, to guarantee that oxygen-eliminating device pressure is less than 0.12MPa (operation/design pressure 0.02/0.12MPa), to guarantee system security.
In addition, being additionally provided with vacuum breaker device on the oxygen-eliminating device ontology 1, when system-down, all valves, which are in, closes shape
State, at this moment oxygen-eliminating device steam inside slowly condenses, and pressure gradually decreases, or even negative pressure condition occurs, to prevent thus situation band
The equipment deformation come installs vacuum breaker device at the top of oxygen-eliminating device, negative pressure does not occur inside oxygen-eliminating device after guarantee equipment downtime, balance
External and internal pressure, prevent equipment because caused by negative pressure using deformation.
Beneficial effect by adopting the above technical scheme is:
Regulating valve 2 is equipped with by the deoxygenation pipeline of constant pressure oxygen-eliminating device in this present embodiment, is also equipped on oxygen-eliminating device ontology 1
Safety valve, vacuum breaker device, and the detection signal of the ancillary equipments such as thermometer, water-level gauge, flowmeter that constant pressure oxygen-eliminating device is installed
It is sent to the calculation processing module of controller 4, when the current information and set information that controller 4 obtains are not inconsistent, signal is through counting
After calculating processing module processing, controller 4 issues processing signal to the regulating valve 2 being installed on deoxygenation pipeline to control to adjust valve again
2 apertures reach and adjust oxygen-eliminating device internal process pressure, guarantee deoxygenation temperature at 104 ± 1.5 DEG C, realize that oxygen-eliminating device automatically controls.
Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality
Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (6)
1. a kind of constant pressure oxygen-eliminating device characterized by comprising
Oxygen-eliminating device ontology, deoxygenation pipeline is communicated on the oxygen-eliminating device ontology, and the deoxygenation pipeline is equipped with regulating valve to control
The discharge of gas, when the current detection information of the oxygen-eliminating device ontology and set information are inconsistent, the aperture of the regulating valve
It is adjustable.
2. constant pressure oxygen-eliminating device according to claim 1, which is characterized in that be additionally provided with pressure sensing on the oxygen-eliminating device ontology
Device.
3. constant pressure oxygen-eliminating device according to claim 2, which is characterized in that the pressure sensor is located at the oxygen-eliminating device sheet
The top of body.
4. constant pressure oxygen-eliminating device according to claim 1, which is characterized in that be additionally provided with safety valve on the oxygen-eliminating device ontology.
5. constant pressure oxygen-eliminating device according to claim 1, which is characterized in that be additionally provided with vacuum breaker on the oxygen-eliminating device ontology
Device.
6. constant pressure oxygen-eliminating device according to claim 1, which is characterized in that regulating valve there are two being set on the deoxygenation pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721770385.5U CN208237846U (en) | 2017-12-18 | 2017-12-18 | A kind of constant pressure oxygen-eliminating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721770385.5U CN208237846U (en) | 2017-12-18 | 2017-12-18 | A kind of constant pressure oxygen-eliminating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208237846U true CN208237846U (en) | 2018-12-14 |
Family
ID=64578731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721770385.5U Active CN208237846U (en) | 2017-12-18 | 2017-12-18 | A kind of constant pressure oxygen-eliminating device |
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| Country | Link |
|---|---|
| CN (1) | CN208237846U (en) |
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2017
- 2017-12-18 CN CN201721770385.5U patent/CN208237846U/en active Active
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