CN200961850Y - Automated control whole-set device for dryness of wet steam boiler - Google Patents
Automated control whole-set device for dryness of wet steam boiler Download PDFInfo
- Publication number
- CN200961850Y CN200961850Y CN 200620010740 CN200620010740U CN200961850Y CN 200961850 Y CN200961850 Y CN 200961850Y CN 200620010740 CN200620010740 CN 200620010740 CN 200620010740 U CN200620010740 U CN 200620010740U CN 200961850 Y CN200961850 Y CN 200961850Y
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- China
- Prior art keywords
- boiler
- wet steam
- dryness
- automatic control
- transmitter
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- Expired - Fee Related
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
An automatic control compound device for wet steam boiler dryness belonging to an industry boiler device, relates to a automatic control device, particularly applicable to a complete equipment automatically controlled by the producing process of the wet steam boiler. The utility model substantially comprises an automatic control device for wet steam dryness, an executing unit, and a executing device, and is characterized in that one side of the automatic control device for wet steam dryness controls the connection with a boiler-feed temperature probe, a water-feed transducer, a pressure difference transmitter, and a flow transmitter, the other side of the automatic control device for wet steam dryness is connected with a pressure transmitter, the pressure difference transmitter and the executing device and a fuel flow regulating valve, one end of the boiler body is connected with an outlet pipe line through a throttling set, the other end of the boiler body is connected with a water-feed pipe line through the throttling set. The utility model has the advantages that the automatic control compound device improves the stability and security of the wet steam boiler operation under automatic control, reduces the labor strength of the operational staff, and enormously improves the economic profit of the use of the wet steam boiler.
Description
One, technical field
The utility model belongs to a kind of equipment of Industrial Boiler, relates to a kind of automatic control device, is specially adapted to that the automation of moist steam boiler mass dryness fraction is controlled to covering device in the moist steam boiler for producing process.
Two, background technology
In the boiler manufacture field, the moist steam boiler is a kind of Industrial Boiler, is widely used in the industries such as thickened oil recovery in the petroleum industry.Its main application is to be used for producing a kind of moist steam with certain mass dryness fraction, utilizes for other production technology.Owing to technical reason, the dryness of wet steam production process of moist steam boiler still is in manual state of a control at present.Under manually controlling, stability is very poor, all causes very big influence for the production technology of keeping the safety in production with follow-up.
Three, summary of the invention
According to the problems referred to above, the purpose of this utility model provides the automation of a kind of moist steam boiler mass dryness fraction and is controlled to covering device, relies on this device can realize the mass dryness fraction Automation of Manufacturing Process control of moist steam boiler.
These complexes mainly are made up of dryness of wet steam automatic control device, performance element and actuating equipment etc.; Formations such as pressure transmitter, differential pressure transmitter, temperature sensor, fuel flow rate transmitter, throttling arrangement are wherein arranged; Wherein the dryness of wet steam control device is a core apparatus, this device is main by computer or Programmable Logic Controller, operating unit, input-output unit and be used to realize that the special-purpose control program device of dryness of wet steam automation control constitutes, here so-called program actually is equivalent to use discrete component to realize a large amount of wiring, components and parts etc. in the logic control function.
Why dryness of wet steam automatic control device in these complexes adopts Programmable Logic Controller or computer, be because the existing patent of invention technology of essential employing-moist steam boiler mass dryness fraction Automation of Manufacturing Process is regulated and controlled when the automation of enforcement dryness of wet steam is controlled, and further on this basis exploitation make its control function more complete.In order to make enforcement reliable and easy more, so adopt Programmable Logic Controller or computer.By application, realized the mass dryness fraction automation control of moist steam boiler to existing patented technology.Computer application in addition can be expanded and extended the function of control device to a great extent.
The basic functional principle of this complete control device is as follows:
The enthalpy that calculates boiler feedwater according to the feed pressure and the feed temperature of boiler, the enthalpy of calculating moist steam according to the pressure gauge of the flow of moist steam and moist steam; Deducting the former set-point as regulating system with the latter then, is the measured value of regulating system with the fuel flow rate again, the control loop of the closed loop that had both formed.
Because the thermal inertia of moist steam boiler is very big, reach usually lag time more than 30 minutes, only rely on the dryness of wet steam that obtains, can't make dryness of wet steam capable to stable control.Therefore also must rely on patented technology mentioned above, form close loop control circuit; And rely on the actual value of the dryness of wet steam that obtains that the set-point in the regulating loop is revised in real time, to reach the ideal control purpose.With the control system that this control method constitutes, shorten lag time greatly, between 3 seconds to 20 seconds, therefore can reach stable control purpose usually.
The dryness of wet steam automation is controlled to covering device, on the basis of realizing dryness of wet steam automation control, also has some security functions and many miscellaneous functions.Device can be judged and automatically reduces dryness of wet steam to eliminate potential danger the danger of issuable moist steam hypertonia; Under the lower situation of moist steam pressure, these complexes can improve the mass dryness fraction of moist steam automatically until the rated value that reaches the moist steam boiler.Miscellaneous function has: show all in-site measurement parameters, various flows are accumulated and operations staff's operation is pointed out etc.
The beneficial effects of the utility model are:
1, under controlling automatically, improved the stability and the security of moist steam boiler operatiopn greatly.
2, greatly reduce operations staff's labour intensity.
3, because the application of intellectualized technology in security that improves the moist steam boiler and stability while, has improved the economic benefit of moist steam boiler to greatest extent.
Four, description of drawings
Accompanying drawing is the utility model structural principle schematic diagram
1-dryness of wet steam automatic control device among the figure is used to realize various operations and control function
2-boiler feed temperature sensor is used to measure boiler feed temperature
3-boiler feedwater pressure transmitter is used to measure boiler feedwater pressure
The 4-differential pressure transmitter is used to measure boiler feedwater flow
5-boiler feedwater pipeline
The 6-throttling arrangement is used to produce the differential pressure corresponding to boiler feedwater flow
The 7-boiler body
8-boiler oil feeding pipe
9-boiler oil flow transmitter
The primary element that the 10-fuel flow rate is measured
The 11-differential pressure transmitter is used to measure wet steam flow
The 12-throttling arrangement is used to produce the differential pressure corresponding to wet steam flow
The 13-pressure transmitter is used to measure moist steam pressure
The 14-actuating equipment is used for driving fuel control valve 15
The 15-fuel flow control valve is controlled fuel flow rate under the driving of actuating equipment
16-boiler export pipeline
Five, the specific embodiment
As seen from the figure, dryness of wet steam automatic control device 1 one side control connection boiler feed temperature sensors 2, boiler feedwater pressure transmitter 3 and differential pressure transmitter 4 and boiler oil flow transmitter 9, the opposite side control connection pressure transmitter 13 of dryness of wet steam automatic control device 1, differential pressure transmitter 11 and actuating equipment 14 and fuel flow control valve 15, boiler body 7 one ends are connected with boiler export pipe 16 by throttling arrangement 12, and the other end of boiler body 7 connects and composes complete unit by throttling arrangement 6 and boiler feedwater pipeline 5.Boiler oil flow transmitter 9 connects the primary element 10 that fuel flow rate is measured, and is connected with fuel flow control valve 15 by boiler oil feeding pipe 8.For ease of implementing, Programmable Logic Controller or computer, input-output unit or module, operating unit etc. are installed concentratedly in a casing, so that on-the-spot the installation, pressure sensor, differential pressure pick-up, temperature sensor, flow sensor and the actuating equipment determined on programming process are at the pairing terminal position of input-output unit.This complete control device is implemented final step, is each sensor and equipment are connected the terminal of the correspondence of determining in the program, and carries out field adjustable and form.
Claims (3)
1, the automation of a kind of moist steam boiler mass dryness fraction is controlled to covering device, mainly form by dryness of wet steam automatic control device, performance element and actuating equipment, it is characterized in that dryness of wet steam automatic control device one side control connection boiler feed temperature sensor, feedwater transmitter and differential pressure transmitter and flow transmitter, connect pressure transmitter, differential pressure transmitter and actuating equipment and fuel flow control valve at its opposite side, be connected with export pipeline by throttling arrangement at boiler body one end, the other end connects and composes by throttling arrangement and supply line.
2, moist steam boiler mass dryness fraction according to claim 1 automation is controlled to covering device, it is characterized in that described boiler oil flow transmitter connects the primary element that fuel flow rate is measured, and is connected with fuel control valve by the boiler oil feeding pipe.
3, moist steam boiler mass dryness fraction according to claim 1 automation is controlled to covering device, it is characterized in that described dryness of wet steam automatic control device mainly is made of the special-purpose control program device of computer or control device able to programme, operating unit, input-output unit and dryness of wet steam automation control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620010740 CN200961850Y (en) | 2006-10-09 | 2006-10-09 | Automated control whole-set device for dryness of wet steam boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620010740 CN200961850Y (en) | 2006-10-09 | 2006-10-09 | Automated control whole-set device for dryness of wet steam boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200961850Y true CN200961850Y (en) | 2007-10-17 |
Family
ID=38798368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620010740 Expired - Fee Related CN200961850Y (en) | 2006-10-09 | 2006-10-09 | Automated control whole-set device for dryness of wet steam boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200961850Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022241377A1 (en) * | 2021-05-11 | 2022-11-17 | Saudi Arabian Oil Company | Dynamic heating media conditioning for heat transfer optimization and fouling control |
-
2006
- 2006-10-09 CN CN 200620010740 patent/CN200961850Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022241377A1 (en) * | 2021-05-11 | 2022-11-17 | Saudi Arabian Oil Company | Dynamic heating media conditioning for heat transfer optimization and fouling control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |